[Federal Register Volume 62, Number 12 (Friday, January 17, 1997)]
[Rules and Regulations]
[Pages 2722-2828]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-143]
[[Page 2721]]
_______________________________________________________________________
Part II
Environmental Protection Agency
_______________________________________________________________________
40 CFR Part 63
National Emission Standards for Hazardous Air Pollutants for Source
Categories: Organic Hazardous Air Pollutants From the Synthetic Organic
Chemical Manufacturing Industry and Other Processes Subject to the
Negotiated Regulation for Equipment Leaks; Rule Clarifications; Final
Rule
Federal Register / Vol. 62, No. 12 / Friday, January 17, 1997 / Rules
and Regulations
[[Page 2722]]
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 63
[AD-FRL-5672-5]
RIN 2060-AC19
National Emission Standards for Hazardous Air Pollutants for
Source Categories: Organic Hazardous Air Pollutants From the Synthetic
Organic Chemical Manufacturing Industry and Other Processes Subject to
the Negotiated Regulation for Equipment Leaks; Rule Clarifications
AGENCY: Environmental Protection Agency (EPA).
ACTION: Final rule: Amendments.
-----------------------------------------------------------------------
SUMMARY: On April 22, 1994 and June 6, 1994, the EPA issued the
National Emission Standards for Hazardous Air Pollutants for Source
Categories: Organic Hazardous Air Pollutants from the Synthetic Organic
Chemical Manufacturing Industry and Other Processes Subject to the
Negotiated Regulation for Equipment Leaks. This rule is commonly known
as the Hazardous Organic NESHAP or the HON. In June 1994, petitions for
review of the April 1994 rule were filed in the U.S. Court of Appeals
for the District of Columbia Circuit. The petitioners raised over 75
technical issues and concerns with drafting clarity of the rule.
On August 26, 1996, the EPA proposed correcting amendments to the
rule to address the petitioners' issues. Among the proposed amendments
were proposed revisions to definitions that apply to wastewater and
wastewater treatment and revised control and compliance provisions for
wastewater. A new compliance date of April 22, 1999, was proposed for
process wastewater, heat exchange systems, equipment subject to the
provisions of Sec. 63.149, and maintenance wastewater. The EPA also
proposed a separate compliance date for wastewater streams affected by
the omission of nitrobenzene from the list of compounds subject to the
wastewater provisions. The proposed revisions to the other provisions
to the rule also included corrections and clarifications to ensure the
rule is implemented as intended. The proposed amendments also included
some additional compliance options that would reduce the burden
associated with the recordkeeping and reporting requirements of the
rule. Today's action takes final action on those proposed amendments.
These amendments to the rule will not change the basic control
requirements of the rule or the level of health protection it provides.
The rule requires new and existing major sources to control emissions
of hazardous air pollutants to the level reflecting application of the
maximum achievable control technology.
EFFECTIVE DATE: January 17, 1997.
FOR FURTHER INFORMATION CONTACT: For general questions, contact Dr.
Janet S. Meyer, Coatings and Consumer Products Group, at (919) 541-5254
or Mary Tom Kissell, Waste and Chemical Processes Group, at (919) 541-
4516. For technical questions on wastewater provisions, contact Elaine
Manning, Waste and Chemical Processes Group, telephone number (919)
541-5499. The mailing address for the contacts is Emission Standards
Division (MD-13), U.S. Environmental Protection Agency, Research
Triangle Park, North Carolina 27711.
SUPPLEMENTARY INFORMATION:
I. Regulated Entities and Background Information
A. Regulated Entities
The regulated category and entities affected by this action
include:
------------------------------------------------------------------------
Category Examples of regulated entities
------------------------------------------------------------------------
Industry............................... Synthetic organic chemical
manufacturing industry (SOCMI)
units, e.g., producers of
benzene, toluene, or any other
chemical listed in Table 1 of
40 CFR part 63, subpart F.
------------------------------------------------------------------------
This table is not intended to be exhaustive but, rather, provides a
guide for readers regarding entities likely to be interested in the
revisions to the regulation affected by this action. Entities
potentially regulated by the HON are those which produce as primary
intended products any of the chemicals listed in table 1 of 40 CFR part
63, subpart F and are located at facilities that are major sources as
defined in section 112 of the Clean Air Act (CAA). To determine whether
your facility is regulated by this action, you should carefully examine
all of the applicability criteria in 40 CFR 63.100. If you have
questions regarding the applicability of this action to a particular
entity, consult one of the individuals listed in the preceding FOR
FURTHER INFORMATION CONTACT section.
B. Background on Rule
On April 22, 1994 (59 FR 19402), and June 6, 1994 (59 FR 29196),
the EPA published in the Federal Register the NESHAP for the synthetic
organic chemical manufacturing industry (SOCMI), and for several other
processes subject to the equipment leaks portion of the rule. These
regulations were promulgated as subparts F, G, H, and I in 40 CFR part
63, and are commonly referred to as the hazardous organic NESHAP, or
the HON. Since the April 22, 1994 notice, there have been several
amendments to clarify various aspects of the rule. Readers should see
the following Federal Register notices for more information: September
20, 1994 (59 FR 48175); October 24, 1994 (59 FR 53359); October 28,
1994 (59 FR 54131); January 27, 1995 (60 FR 5321); April 10, 1995 (60
FR 18020); April 10, 1995 (60 FR 18026); December 12, 1995 (60 FR
63624); February 29, 1996 (61 FR 7716); June 20, 1996 (61 FR 31435);
August 26, 1996 (61 FR 43698); and December 5, 1996 (61 FR 64571).
In June 1994, the Chemical Manufacturers Association (CMA) and Dow
Chemical Company filed petitions for review of the promulgated rule in
the U.S. Court of Appeals for the District of Columbia Circuit,
Chemical Manufacturers Association v. EPA, 94-1463 and 94-1464 (D.C.
Cir.) and Dow Chemical Company v. EPA, 94-1465 (D.C. Cir). The
petitioners raised over 75 technical issues on the rule's structure and
applicability. Issues were raised regarding details of the technical
requirements, drafting clarity, and structural errors in the drafting
of certain sections of the rule. On August 26, 1996, the EPA proposed
clarifying and correcting amendments to subparts F, G, H, and I of part
63 to address the issues raised by CMA and Dow on the April 1994 rule.
In the August 26, 1996 document, the EPA committed to taking final
action on some portions of the proposed amendments to the rule as soon
as possible after the close of the comment period in order to give
sources as much lead time as possible. In the December 5, 1996 Federal
Register, the EPA took final action on those portions of the proposed
amendments that would eliminate the need for filing some implementation
plans that would otherwise be due December 31, 1996, and would allow
the filing of requests for compliance extensions up to 4 months before
the April 1997 compliance date.
Today the EPA is taking final action on the remaining portions of
the amendments proposed on August 26, 1996.
C. Public Comment on the August 26, 1996 Proposal
Eighteen comment letters were received on the August 26, 1996
Federal Register document that proposed
[[Page 2723]]
changes to the rule. All comment letters received were from industry
representatives and trade associations. Most of the comment letters
were supportive of the proposed amendments. A few of these comment
letters also included suggested editorial revisions to further clarify
some aspects of the proposed amendments or to address oversights in the
proposed amendments. The EPA considered these suggestions and, where
appropriate, made changes to the proposed amendments. The significant
issues raised and the changes to the proposed amendments are summarized
in this preamble. A memorandum containing the EPA's response to all
comments can be found in Docket A-90-19, item number IX-C-1. The
response to comments may also be obtained over the Internet at http://
ttnwww.rtpnc.epa.gov or from the EPA's Technology Transfer Network
(TTN). The TTN is a network of electronic bulletin boards developed and
operated by the Office of Air Quality Planning and Standards. The
service is free, except for the cost of a phone call. Dial (919) 541-
5742 for up to a 14,400 bits per second modem. Select TTN Bulletin
Board: Clean Air Act Amendments and select menu item Recently Signed
Rules. If more information on TTN is needed, contact the systems
operator at (919) 541-5384.
D. Judicial Review
Under Section 307(b)(1) of the CAA, judicial review of this final
action is available only on the filing of a petition for review in the
U.S. Court of Appeals for the District of Columbia Circuit within 60
days of today's publication of this final rule. Under Section 307(b)(2)
of the CAA, the requirements that are subject to today's notice may not
be challenged later in civil or criminal proceedings brought by the EPA
to enforce these requirements.
II. Overview of Amendments to Rule
With today's action, the EPA is issuing clarifying and correcting
amendments to subparts F, G, H, and I of 40 CFR part 63 that were
proposed on August 26, 1996. Readers should refer to the August 26,
1996 Federal Register document for a complete discussion of the
background and the proposed changes to the rule. Today's revisions are
intended to remove any ambiguity and clearly convey the EPA's intent,
to make the rule easier to read and implement, and to increase
flexibility for the source.
These amendments include an extension of the existing source
compliance date to April 22, 1999 for process wastewater, heat exchange
systems, maintenance wastewater, and equipment subject to the
provisions of Sec. 63.149 and also establish a separate compliance date
for wastewater streams affected by the omission of nitrobenzene from
table 9 of subpart G. A three year compliance date is being established
for process wastewater streams that are subject to control requirements
due to the presence of nitrobenzene due to an error in the April 22,
1994 rule. Equipment subject to the other provisions of the rule must
be in compliance by April 22, 1997, unless a compliance extension is
granted.
Today's amendments also include the revisions to the wastewater
sections of subpart G, Secs. 63.132 through 63.147. As discussed in the
August 26, 1996 document, the wastewater sections have been redrafted
to improve organizational structure and clarity. The revised wastewater
sections reflect the concept that only when water is ``discarded'' from
a process is it ``wastewater,'' and thus subject to the HON wastewater
provisions. The revised wastewater sections in subpart G also include
provisions that: (1) Ensure that streams traveling from one piece of
process equipment to another are handled appropriately to avoid
emissions to the environment, and (2) ensure that the changes in the
wastewater definition do not permit sources to dilute their streams
prior to the point the streams are considered wastewater, thus avoiding
control requirements. The amendments to the wastewater provisions also
include the provisions that would allow a HON source owner or operator
to ship waste off-site for treatment. Under these revisions to the
rule, the owner or operator choosing not to treat wastewater on-site
may only ship to a facility that has certified that it will treat the
waste to the standard required by the HON.
In contrast to the significant revisions of the wastewater
provisions, only minor changes are being made to other sections of the
rule. In addition to removing ambiguity and increasing flexibility for
the source, some revisions reduce the reporting and recordkeeping
burden for sources. The reporting and recordkeeping revisions include
changes that (1) reduce the number of copies of reports that must be
submitted to the EPA and the States, and (2) provide for alternative,
less frequent recordkeeping of monitoring data where sources are able
to demonstrate that no violations have occurred for prolonged stretches
of time.
III. Summary of Major Comments and Changes to the Proposed Amendments
to the Rule
A. Applicability of Rule to Storage Vessels Located in a Tank Farm or
Marine Terminal
In the August 26, 1996 document, the EPA proposed amendments to
clarify the applicability of the rule to storage vessels located in
tank farms and marine tank farms. Due to an oversight, the provisions
currently in Sec. 63.100(g) of subpart F of the April 1994 rule did not
include instructions regarding allocation of tanks in remote locations,
such as tank farms. The proposed amendments, Sec. 63.100(g)(3),
provided explicit procedures to be followed to assign the storage
vessels to a process and then to determine the applicability of the
rule.
Most commenters were supportive of the proposed amendment. However,
one commenter requested clarification of the difference between a
remote storage tank owned by a chemical process facility and a remote
storage tank owned by a for-hire, bulk liquid terminal. The commenter
thought the proposed amendments to Sec. 63.100(g) could inappropriately
cause a remote storage tank owned by a for-hire, bulk liquid terminal
to be considered subject to the HON. The commenter requested that the
rule specifically state that remote storage vessels at independent tank
farm distribution facilities are not subject to the rule.
The EPA agrees with the commenter that the focus of this rule is on
chemical manufacturing plants and not on for-hire terminals that store
products for distribution. The EPA believes that the commenter's
concern arose because the preamble description of this proposed change
was not sufficiently clear that this assignment procedure was for
allocation of storage vessels at remote locations within the plant
site. The EPA believes that when the provisions of Sec. 63.100(g)(3)
are considered within context of all the applicability criteria in
subpart F it is clear that this proposed assignment procedure for
storage vessels in tank farms does not extend the applicability to for-
hire terminals that are not part of the major source. For the
amendments to affect any specific storage vessel (or transfer rack or
distillation unit), it would have to be part of a chemical
manufacturing process unit at a major source subject to the rule. In
order for a storage vessel (or transfer rack or distillation unit) to
be part of a major source, it would have to be (among other things)
under the control of the owner or operator of the chemical
manufacturing process unit
[[Page 2724]]
and located within the same contiguous area as the chemical
manufacturing process unit. A storage vessel owned by a for-hire bulk
liquid terminal could only be subject to the HON if it was under the
control of the owner or operator of the HON chemical manufacturing
process unit, and contiguously located, and therefore part of the same
major source. The EPA believes that the applicability of the rule is
clear and it is not necessary to add explicit language to the rule to
specify that storage vessels at for-hire terminals that are not part of
the major source are not subject to the rule.
B. Revision to Table 2 of Subpart F List of Regulated Organic Hazardous
Air Pollutants
In the August proposal, the EPA proposed to revise table 2 of
subpart F to list 21 specific compounds that are to be regulated as
polycyclic organic matter (POM) in the HON. The specific compounds
listed were identified as being consistent with the historical working
definition of POM, which emphasizes emissions from incomplete
combustion and pyrolysis processes (49 FR 31680). This change was
proposed to address requests for clarification of the scope of the term
POM in the HON.
Several commenters contended that 1,2-naphthylamine sulfonic acid,
1,4-naphthylamine sulfonic acid, -naphthol, and -
naphthol should not have been included on the list of specific
compounds proposed to be added to table 2 to replace the hazardous air
pollutants category POM. These commenters all asserted that these
compounds do not meet the historical working definition of POM, as
claimed by the EPA in the August 26, 1996 document. In support of that
view, the commenters stated that, in 1992, the EPA acknowledged the
potential problems with the statutory definition of POM and stated
that, although the definition would remain, the EPA would emphasize
emissions from combustion and pyrolysis activities (letter from John
Seitz to Larry Thomas, The Society of the Plastics Industry, March 3,
1992). The commenters also believe that, in 1994, the EPA announced a
new POM definition in a response to comments Background Information
Document (EPA-453/R-94-003d) for the HON that states:
Polycyclic organic matter is generally formed or emitted during
thermal processes including (1) incomplete combustion, (2)
pyrolysis, (3) the volatilization of fossil fuels or bitumens, or
(4) the distillation or thermal processing of non-fossil fuels. (HON
BID, Vol. 2D, p.4)
The commenters believe that these four compounds do not meet what they
describe as the revised definitions of POM since the compounds are not
produced by combustion processes and are not used in the types of
processes intended to be covered by this listing. The commenters
recommended that these specific compounds not be added to table 2 of
subpart F. One commenter also argued that the EPA should follow the
listing process in section 112(b) of the CAA if the EPA wished to list
these specific compounds as hazardous air pollutants.
The EPA does not agree with the commenters that these four
compounds do not meet the historical working definition of POM and
thus, should not be added to table 2 of subpart F. The term POM, as
defined in section 112(b) of the CAA, includes organic compounds with
more than one benzene ring and which have a boiling point greater than
or equal to 100 deg. C. This definition is very broad and does not
limit the term to the group of compounds which the EPA believes are
principally responsible for mutagenicity and carcinogenicity in humans
and animals. This arises because the current statutory definition
includes any compound with more than one benzene ring and is not
limited to fused ring compounds. Neither the March 1992 Seitz letter,
nor the HON Background Information Document amend the statutory
definition of POM. The August 26, 1996 proposal, to list 21 specific
compounds on table 2 of subpart F instead of listing POM generally, is
consistent with the molecular structures of concern in the historical
definition. Specifically, the 21 compounds have molecular structures
with two or more fused rings at least one of which is benzenoid in
structure. These chemicals were identified as chemical products
produced by the chemical manufacturing processes considered to be
within the definition of the SOCMI source category. Whether these
compounds were produced by extraction from materials produced by
pyrolysis processes or derived from petroleum feedstocks, was not a
consideration in the listing. The EPA does not agree with the
commenter's interpretation that compounds can be considered POM only if
formed by incomplete combustion and/or pyrolysis operations; the
statutory definition of POM is not limited in that fashion.
The reason for including these specific compounds on table 2
instead of listing POM generally was to ensure that emissions of these
compounds from the chemical manufacturing process unit producing these
chemicals would be subject to the requirements of the rule. All of
these compounds meet the definition of POM in section 112(b) of the
CAA. Specification of these compounds on table 2 will not result in
application of the rule to sources using these chemical products to
produce other products. It will require that emissions of these
substances from sources subject to this rule to be subject to the
requirements of the rule. Before today's changes to table 2 of subpart
F, emissions of the 21 substances were subject to the requirements of
the rule. Today's changes merely clarify what the substances are rather
than referring to POM generally.
Finally, the EPA disagrees with the commenter who argued that the
EPA should follow the listing process in section 112(b) to list these
compounds as hazardous air pollutants. The specific hazardous air
pollutants added to table 2 meet the definition of POM in section
112(b) and therefore are already subject to the requirements of section
112 without further listing action.
One commenter also asserted that listing 1,2-naphthylamine sulfonic
acid and 1,4-naphthylamine sulfonic acid as Hazardous Air Pollutants
has potential consequences under other statutes. The commenter noted
that the Comprehensive Environmental Response, Compensation, and
Liability Act (CERCLA) section 101(14)(e) incorporates by reference any
hazardous air pollutant listed under the CAA. This, in turn,
establishes Federal authority to respond to releases or threats of
releases of hazardous substances and triggers notification requirements
of releases to the National Response Center above the Reportable
Quantity (RQ) and liability for costs associated with cleanup and any
natural resources damages resulting from the release. Another possible
result is under section 304 of the Emergency Planning and Community
Right-to-Know Act of 1986 (EPCRA) that the owner or operator of a
facility from which an RQ or more of a CERCLA hazardous substance has
been released must immediately notify state and local emergency
response authorities.
The EPA does not agree with the commenter's assessment of the
potential consequences of the proposed listing of the 21 compounds in
table 2 of 40 CFR part 63, subpart F. The commenter's opinion that the
listing of the chemicals of interest in table 2 in place of POM
generally triggers new CERCLA and EPCRA reporting requirements is
incorrect, as the requirements were effective upon enactment of the CAA
by virtue of CERCLA section 101(14) and, in turn, section 102(b). The
POM category was one of five broad generic
[[Page 2725]]
categories of CAA section 112 hazardous air pollutants codified as a
hazardous substance pursuant to CERCLA section 101(14) in 40 CFR 302.4.
Section 101(14) of CERCLA states that the term ``hazardous substance''
includes ``any hazardous air pollutant listed under section 112 of the
Clean Air Act.'' Thus, the CAA categories automatically became
hazardous substances under CERCLA when listed as hazardous air
pollutants under section 112 in 1990. In the June 12, 1995 Federal
Register (60 FR 30926), the EPA stated that ``All substances within the
(CAA section 112 hazardous air pollutants) categories, as well as the
categories themselves, are CERCLA hazardous substances'' and that
``CERCLA section 102(b) provides that an RQ of one pound applies to
hazardous substances (which include the CAA hazardous air pollutants)
until this RQ is adjusted by regulation. Therefore, the section 112
listing of POM in the CAA automatically triggers a one pound RQ for any
chemical which falls within the section 112(b) definition of POM.
Issuance of a MACT standard requiring control of specific hazardous air
pollutants has no additional effect on CERCLA coverage.
C. Compliance Extension for New Sources
The August 26, 1996 proposal included an extension of the
compliance date to April 22, 1999 for heat exchange systems,
maintenance wastewater, equipment subject to Sec. 63.149, and process
wastewater for existing sources. This proposed change was in
Sec. 63.100(k)(2)(ii) of the proposed rule.
Several commenters suggested that the compliance schedule should be
extended for new sources to April 22, 1999 or initial startup,
whichever is later. The commenter's did not state the basis for their
belief that more than 2 additional years should be provided for new
sources.
While the EPA believes that, in some limited instances new sources
may need more time for compliance than was provided in the April 1994
rule, the EPA does not believe that 2 years is justified. In today's
final rule the EPA has provided that, in general, new sources that
commenced construction or reconstruction up to the date of proposal of
the August 1996 amendments continue to have a compliance date of April
22, 1994, (the date of the original final rule) or start-up, whichever
is later.
However, some exceptions have been added. Commenters had requested
more compliance time for heat exchange systems, maintenance and process
wastewater streams, and equipment subject to Sec. 63.149 (those pieces
of equipment for which a new, later compliance date has been set with
respect to existing sources). In response to this request the EPA has
decided that heat exchange systems, maintenance wastewater streams,
process wastewater streams, and equipment subject to Sec. 63.149 that
are part of new sources on which construction or reconstruction
commenced before proposal of the August 1996 amendments will have a
compliance date that is the later of start-up or 180 days from the date
of today's final rule.
These exceptions will provide new sources that commenced planning
for, or actually achieved compliance with, the April 22, 1994 rule, 6
months more time to allow any minor adjustments necessary to comply
with the provisions of today's final rule applicable to the heat
exchange system, maintenance and process wastewater streams, and
equipment subject to Sec. 63.149.
In addition, today's final rule provides that new sources upon
which construction or reconstruction commenced after the August 1996
proposal, must be in compliance upon the later of initial start-up or
the date of today's final rule.
The EPA believes that 180 days from today is ample time for any new
sources that are already in compliance with the April 1994 final rule
to make the necessary adjustments to their recordkeeping and reporting
procedures to ensure compliance with today's rule. Those sources that
commenced construction after December 31, 1992, but have not yet
reached start-up will be able to adjust their start-up date to allow
time to reach compliance as will any new sources commencing
construction after the August 26, 1996 proposal.
D. Delay of Repair for Heat Exchangers
The August proposal included new Sec. 63.104 requirements for
monitoring heat exchange systems for leaks of process fluids into
cooling water. The proposed Sec. 63.104 would replace the existing
provisions in Sec. 63.104 of subpart F. The revisions were proposed to
address issues with the existing provisions related to the availability
of monitoring methods with sufficient analytical sensitivity, lack of
flexibility in some of the requirements, and the burden associated with
the monitoring requirements. The proposed Sec. 63.104 also included
revisions to the delay of repair provisions to allow delay until the
next shutdown if a shutdown is planned within 2 months of determination
that delay of repair is necessary. The proposed revisions to
Sec. 63.104 also provided that repair may be delayed up to a maximum of
120 days if the necessary parts or personnel were not available. These
new provisions would replace the provisions in the April 1994 rule
which only allows delay of repair when it can be demonstrated that
immediate shutdown for repair would create more emissions than the
emissions that would result from delaying repair of the leaking heat
exchanger until the next shutdown. In the August 26, 1996 document, it
was explained that the proposed revisions to the delay of repair
provisions of the rule were being made to make these provisions
workable and to minimize debate over modeling of emissions from heat
exchanger systems.
Several commenters objected to this change in the delay of repair
provisions in Sec. 63.104. The commenters argued that it is
inappropriate to require an unscheduled shutdown if it can be
demonstrated that greater emissions would result than would occur if
the leak were repaired at the next scheduled shutdown. The commenters
thought that this change was an unintended result of other changes to
the wording of the provision.
As a result of this comment, the EPA reconsidered the circumstances
where delay of repair would be appropriate and the approach used to
develop an enforceable provision. Based on further examination of
situations that might arise in a facility subject to the standard, the
EPA concluded that Sec. 63.104(e)(2) could be revised to allow delay of
repair in situations where greater emissions would result than would
occur if the leak were repaired at the next scheduled shutdown if the
procedure for calculating emissions were specified in the rule. The
revised Sec. 63.104(e)(2) includes delay of repair provisions for cases
where the maximum potential emissions from the leaking heat exchanger
are less than the emissions that would result from an unscheduled
shutdown. The proposed 120 day maximum delay due to unavailability of
parts or personnel to effect the repair is also retained in the final
provisions. The EPA believes that the added provision will address
cases involving low flow rate heat exchangers that can not be isolated
from the process and where process unit shutdowns may result in
substantial emissions. The EPA believes that the revised
Sec. 63.104(e)(2) provides the flexibility needed while maintaining the
enforcability of the provision.
[[Page 2726]]
E. Wastewater Issues
1. Point of Determination
In the August 26, 1996 proposal, the EPA proposed to revise the
wastewater provisions to base the determination of applicability of
control requirements to a wastewater stream on its characteristics at
the point where the wastewater stream exits the last recovery device
instead of at the point of generation (POG). The new location for
determining the characteristics of a wastewater stream was termed the
point of determination (POD) to distinguish it from the POG concept
used in other air rules for waste and wastewater such as the Benzene
Waste NESHAP. This proposed revision was one of several changes
proposed to address problems with the clarity and structure of the
wastewater provisions in the April 1994 rule.
The public comment on the proposal was supportive of the new POD
concept. Therefore, the proposed revision changing from a POG approach
to the POD approach is being incorporated into the final rule without
revision. However, some public inquiries on the proposal also indicated
that confusion exists regarding some details of the concept.
Specifically, some readers have mistakenly interpreted POD by confusing
the meaning of ``recovery device'' and ``treatment process.'' This
section of the preamble sets forth the EPA's intent and emphasizes that
key definitions and provisions should be used together to understand
and correctly implement the POD concept in this rule.
The EPA's intent in developing the POD approach was to have a
decision criterion that is replicable and clearly specifies the
location for evaluation of a wastewater stream for the purposes of
control. All equipment prior to the POD is considered to be part of the
process and equipment downstream of the POD is not considered to be
part of the process. The POD is defined as each point where process
wastewater exits the chemical manufacturing process unit. To understand
the POD approach, other portions of the rule must be understood,
especially the definitions of wastewater, recovery device, and
treatment process and the provisions in Sec. 63.149.
``Wastewater'' is defined, inter alia, as water that is discarded
from a chemical manufacturing process unit. Under the revised approach
for defining wastewater, a stream does not become wastewater until it
exits the last recovery device. At that point, because the stream is no
longer being processed or used, it is considered to be discarded.
``Recovery device'' is defined as an individual unit of equipment
capable of and normally used for the purpose of recovering chemicals
for fuel value, use, or reuse or for sale for one of these purposes.
A ``treatment process'' is defined in the HON as a specific
technique that removes or destroys organics in a wastewater stream or
residual. Examples of treatment processes are a steam stripper (which
separate the organic material from the water) and a biological
treatment process (which destroys the organic compounds).
The EPA recognizes that the same categories of equipment, such as
oil-water separators or organic removal devices such as decanters or
strippers, may be recovery devices or treatment devices depending upon
the specific application in a particular process' operations. To
determine whether a particular item of equipment should be considered a
recovery device or a treatment process, it is necessary to consider the
subsequent utilization or disposition of the materials that pass
through the item of equipment. If the recovered materials are then used
for the same general purpose for which chemicals are utilized within
the facility (i.e., used for the chemical properties of the material or
for use as a fuel), then the equipment would be considered a recovery
device. If the material is not recovered for use, reuse, or fuel value
or for sale for use, reuse, or fuel value (under normal circumstances),
the equipment can not be considered a recovery device. For example, an
organic water separator, such as a steam stripper could not be
considered to be a recovery device if the separated organic material is
later sent to an incinerator for disposal. However, if the separated
organic material were used in a process or incorporated into product,
the steam stripper would be considered part of the process.
In developing the POD approach, the EPA assumed that organic
hazardous air pollutants containing fluids within the process would be
managed in closed systems to minimize losses of a recoverable material.
The EPA based this assumption on information provided by industry
representatives and the EPA's experience with the chemical industry.
The provisions in table 35 of subpart G and the new Sec. 63.149 were
designed to ensure that conveyance and handling of organic hazardous
air pollutants containing process fluids would be handled in a manner
consistent with the requirements for wastewater streams subject to
control.
The EPA considers the POD approach as appropriate for this rule
because the HON addresses the other emission points in the chemical
manufacturing process unit. The EPA does not believe that the POD
approach would be appropriate for other rules that are not as
comprehensive in the coverage of emission points. For example, the POD
concept would not be appropriate in cases where it is known that other
emission points would not be subject to any control requirements.
2. Clarification of Safety Relief Device Provisions for Waste
Management Units
The August proposed revisions to Sec. 63.132 included provisions to
allow waste management units to be equipped with pressure relief
devices needed for safety purposes, Sec. 63.132 (a)(2)(i) and
(b)(3)(i). Although no comments were received on these proposed
provisions, the EPA has received inquiries from some industry
representatives and consultants requesting clarification of the intent
of these provisions. The inquiries concerned whether these provisions
prohibit the use of pressure-vacuum vents on wastewater tanks storing
wastewater streams or whether these provisions would allow venting of
emissions to the atmosphere of wastewater tanks storing Group 1
wastewater streams.
The intent of the pressure relief valve provisions in Sec. 63.132
(a)(2)(i) and (b)(3)(i) is to provide for safety releases in emergency
situations only. These provisions provide that a pressure relief device
on waste management units is allowed ``provided the pressure relief
device is not used for planned or routine venting of emissions.'' These
provisions should not be interpreted as providing for routine venting
of emissions from waste management units.
Neither should these provisions be interpreted as prohibiting
pressure-vacuum vents on fixed roof wastewater tanks allowed for tanks
storing wastewater streams with a maximum true vapor pressure of less
than: (1) 13.1 kPa if the tank capacity is greater than or equal to 75
m3 but less than 151 m3; or (2) less than 5.2 kPa if the tank
capacity exceeds 151 m3 as specified in Sec. 63.133(a)(1). The
rule requires that tanks meeting these criteria be equipped with a
fixed roof and allows the roof to be equipped with openings necessary
for operation, inspection, and maintenance. There is no requirement to
control emissions from tanks meeting these criteria.
[[Page 2727]]
3. Issues Associated With Biological Treatment Processes
The August proposal included provisions that provided easier
compliance demonstration options for well-mixed activated sludge
systems that are used to control readily biodegraded compounds. In this
proposed change to the April 1994 rule, the compounds listed in table 9
of subpart G were divided into three lists. In the proposal, a
performance evaluation would not be required for activated sludge
systems that met the definition of enhanced biological treatment system
and the unit was controlling wastewater streams that contained only
list 1 compounds. The proposed revisions to appendix C still required a
performance demonstration for activated sludge systems used to treat a
combination of list 1 and list 2 and/or list 3 compounds.
All comments on the proposed compliance demonstration provisions
for biological treatment systems were supportive of this approach.
However, based on conversations with industry representatives, the EPA
has learned that some people are misinterpreting the proposed
definition of ``enhanced biological treatment system or biological
treatment process.'' This section of the preamble sets forth the EPA's
intent and reiterates the basis for the proposed compliance
demonstration exemption for certain biological treatment units. Because
of the potential for misinterpretation of the term, a clarifying change
has been made to the proposed definition for ``enhanced biological
treatment system or enhanced biological treatment process.''
The proposed revisions to the rule defined an enhanced biological
treatment system as an aerated treatment unit(s) that contains biomass
suspended in water followed by a clarifier that removes biomass from
the treated water and recycles recovered biomass to the aeration unit.
The mixed liquor volatile suspended solids (biomass) is greater than 1
kilogram per cubic meter throughout each aeration unit. The biomass is
suspended and aerated in the water of the aeration unit(s) by either
submerged air flow or mechanical agitation. The EPA's intent in
defining the enhanced biological treatment system was to reflect the
modeling of an activated sludge system with a well-mixed biological
treatment unit that was used to develop the three lists of compounds in
table 36. (A well-mixed or completely mixed system is a biological
treatment unit where particles entering the tank are dispersed
immediately throughout the tank and the system has uniform
characteristics (Docket A-90-23, item VII-B-8).) The requirement to
recycle biomass indicated an activated sludge system. The requirement
to have the biomass suspended and aerated indicated an aerobic
biological unit. The phase ``throughout each aeration unit'' was
intended to mean that the unit was well-mixed. It is this phrase that
is being misinterpreted or overlooked by readers. Therefore, the EPA
has slightly revised the definition for enhanced biological treatment
systems in today's rule to help clarify the intent. In today's rule the
second sentence of the definition reads, ``the mixed liquor volatile
suspended solids (biomass) is greater than 1 kilogram per cubic meter
homogeneously distributed throughout each aeration unit.'' The
additional phrase, ``homogeneously distributed,'' was added to clarify
the EPA's intent to define a uniformly well-mixed biological treatment
unit. The EPA believes this revision clarifies the original intent and
does not alter the meaning of the term.
An example of a system that would meet the enhanced biological
treatment system definition would be a conventional well-designed,
operated, and maintained activated sludge system. The biological
treatment unit of this enhanced biological treatment system would
contain a homogeneous mixture or, in other words, the biological
treatment unit would have the same concentration, mixed liquor volatile
suspended solids (MLVSS), and dissolved oxygen throughout the vessel
where the biological reactions occur.
A plug-flow system is an example of a biological treatment system
that does not meet the HON enhanced biological treatment system
definition. Plug-flow systems typically occur in long tanks with a high
length-to-width ratio in which longitudinal dispersion is minimal or
absent (Docket A-90-23, item VII-B-8). Plug-flow systems are not
considered acceptable units for the compliance demonstration exemption
because they may tend to have higher air emissions at the front of the
system where the concentration is higher. This is not to say that a
well operated plug-flow system would not be an acceptable biological
treatment system; however, the EPA was not as confident that the
parameters required to operate an acceptable plug-flow system could be
defined. These systems are required to demonstrate compliance through
use of the procedures in appendix C. Appendix C has been revised to
state that the calculation procedures (forms) in the appendix are for
well-mixed systems and to include suggestions for ways to address
systems that are not uniform well-mixed systems.
F. Miscellaneous Changes
The EPA also made a number of clarifying changes to several
sections of the August 1996 proposal. Examples of provisions that were
revised to clarify requirements include Sec. 63.145(f)(5),
Sec. 63.146(d)(1), and the oxygen control system requirements in
section 2.1.6 of Methods 304A and 304B. The EPA believes that these
revisions clarify the original intent and do not alter the effect of
the rule.
In addition to clarifying changes to the August 1996 proposed
amendments to the rule, the EPA also made minor revisions to provide
consistency with other similar provisions elsewhere in the rule or in
other rules. The EPA slightly revised the provisions in
Sec. 63.144(b)(5)(i)(C) to provide consistency between the requirements
for use of alternative methods allowed in the HON with similar
requirements in 40 CFR part 265, subpart CC (61 FR 59932). One of the
changes is to remove a requirement to perform the initial calibration
of the analytical system with the compounds for which the analysis is
being conducted for Methods 624 and 625. This requirement is already
addressed in the procedures outlined in Methods 624 and 625. The other
change is to reference a procedure that may be used to add compounds to
a method's published list of approved compounds for Methods 624, 625,
1624, and 1625. The record retention requirements for the heat
exchanger monitoring plan in Sec. 63.104(c) were revised from the
requirements in Sec. 63.103(c) to specify requirements that are similar
to the proposed requirements in Sec. 63.152(g)(1)(vi)(D). The revised
provisions require that the owner or operator maintain, at all times,
the monitoring plan that is currently in use and retain copies of the
most recently superceded plan for 15 years. This revision was made to
ensure that there could be no misunderstanding that copies of the
current plan must be maintained regardless of the duration of the
retention period.
G. Technical Corrections
The following amendments are minor technical corrections that were
not part of the August 26, 1996 proposal. These changes are being made
as part of today's action as a matter of efficiency in rulemaking.
Furthermore, these changes are noncontroversial and do not
substantively change the requirements of the rule. By promulgating
these technical corrections directly as a final rule, the EPA is
foregoing an
[[Page 2728]]
opportunity for public comment on a notice of proposed rulemaking.
Section 553(b) of title 5 of the United States Code and section 307(b)
of the CAA permit an agency to forego notice and comment when ``the
agency for good cause finds (and incorporates the finding and a brief
statement of reasons therefore in the rules issued) that notice and
public procedure thereon are impracticable, unnecessary, or contrary to
the public interest.'' The EPA finds that notice and comment regarding
these minor technical corrections are unnecessary due to their
noncontroversial nature and because they do not substantively change
the requirements of the HON. The EPA finds that this constitutes good
cause under 5 U.S.C. 553(b) for a determination that the issuance of a
notice of proposed rulemaking is unncessary.
1. Removal of Caprolactam From Table 2 of 40 CFR Part 63, Subpart F
On June 18, 1996 (61 FR 30816), the EPA took final action deleting
caprolactam from the list of hazardous air pollutants under section
112(b) of the CAA. Accordingly, as caprolactam is no longer subject to
regulation under section 112(d) of the CAA, the EPA is removing
caprolactam from table 2 of 40 CFR part 63, subpart F.
2. Correction of Sec. 63.174(h)(2)
On June 20, 1996 (61 FR 31440), the EPA amended Sec. 63.174(h)(1)
of subpart H to replace references to ``glass or glass-lined
connectors'' with the terminology ``ceramic or ceramic-lined
connectors.'' This change was made to use the more generic terminology
for these connectors (60 FR 18074). The need to amend Sec. 63.174(h)(2)
was overlooked at the time these amendments were issued. In today's
action, the EPA is revising Sec. 63.174(h)(2) to use the terminology
``ceramic or ceramic-lined connectors'' instead of ``glass or glass-
lined connectors''. This change will remove an inconsistency in the
drafting of Sec. 63.174(h).
IV. Administrative Requirements
A. Paperwork Reduction Act
The Office of Management and Budget (OMB) has approved the
information collection requirements contained in the rule under the
Provisions of the Paperwork Reduction Act, 44 U.S.C. 3501 et seq. and
has assigned OMB control number 2060-0282. An Information Collection
Request (ICR) document was prepared by the EPA (ICR No. 1414.02) and a
copy may be obtained from Sandy Farmer, OPPE Regulatory Information
Division; U.S. Environmental Protection Agency (2137); 401 M St., S.W.;
Washington DC 20460 or by calling (202) 260-2740.
An agency may not conduct or sponsor, and a person is not required
to respond to a collection of information unless it displays a
currently valid OMB control number. The OMB control numbers for the
EPA's regulations are listed in 40 CFR part 9 and 48 CFR Chapter 15.
The changes included in this rule will have no impact on the
information collection burden estimates previously made. The changes
consist of new definitions, alternative test procedures, and
clarifications of requirements. The changes are not additional
requirements. Consequently, the ICR has not been revised for this rule.
B. Executive Order 12866 Review
Under Executive Order 12866, the EPA must determine whether the
proposed regulatory action is ``significant'' and, therefore, subject
to OMB review and the requirements of the Executive Order. The Order
defines ``significant'' regulatory action as one that is likely to lead
to a rule that may:
(1) Have an annual effect on the economy of $100 million or more or
adversely affect in a material way the economy, a sector of the
economy, productivity, competition, jobs, the environment, public
health or safety in State, local, or tribal governments or communities;
(2) Create a serious inconsistency or otherwise interfere with an
action taken or planned by another agency;
(3) Materially alter the budgetary impact of entitlements, grants,
user fees, or loan programs or the rights and obligations of recipients
thereof; or
(4) Raise novel legal or policy issues arising out of legal
mandates, the President's priorities, or the principles set forth in
the Executive Order.
The HON rule promulgated on April 22, 1994 was considered
``significant'' under Executive Order 12866, and a regulatory impact
analysis was prepared. The amendments issued today clarify the rule and
correct structural problems with the drafting of some sections. The
amendments also provide additional flexibility for sources and provide
opportunities to reduce the recordkeeping and reporting burden. These
amendments do not add any new control requirements. Therefore, this
regulatory action is considered ``not significant.''
C. Regulatory Flexibility
The EPA has determined that it is not necessary to prepare a
regulatory flexibility analysis in connection with this final rule. The
EPA has also determined that this rule will not have a significant
economic impact on a substantial number of small entities. See the
April 22, 1994 Federal Register (59 FR 19449) for the basis for this
determination. The changes to the rule remove a reporting requirement
and provide additional time to request compliance extensions.
Therefore, the changes do not create a burden for any of the regulated
entities.
D. Submission to Congress and the General Accounting Office
Under 5 U.S.C. 801(a)(1)(A), as added by the Small Business
Regulatory Enforcement Fairness Act of 1996, the EPA submitted a report
containing this rule and other required information to the U.S. Senate,
the U.S. House of Representatives, and the Comptroller General of the
General Accounting Office prior to publication of the rule in today's
Federal Register. This rule is not a ``major rule'' as defined by 5
U.S.C. 804(2).
E. Unfunded Mandates Reform Act
Under Section 202 of the Unfunded Mandates Reform Act of 1995
(Unfunded Mandates Act), the EPA must prepare a budgetary impact
statement to accompany any proposed or final rule that includes a
Federal mandate that may result in estimated costs to State, local, or
tribal governments in the aggregate or to the private sector, of $100
million or more. Under Section 205, the EPA must select the most cost-
effective and least burdensome alternative that achieves the objectives
of the rule and is consistent with statutory requirements. Section 203
requires the EPA to establish a plan for informing and advising any
small governments that may be significantly or uniquely impacted by the
rule.
The EPA has determined that the action promulgated today does not
include a Federal mandate that may result in estimated costs of $100
million or more to either State, local, or tribal governments in the
aggregate or to the private sector. Therefore, the requirements of the
Unfunded Mandates Act do not apply to this action.
List of Subjects in 40 CFR Part 63
Environmental protection, Air pollution control, Hazardous
substances, Reporting and recordkeeping requirements.
[[Page 2729]]
Dated: December 26, 1996.
Carol M. Browner,
Administrator.
Chapter I, part 63 of the Code of Federal Regulations is amended as
follows:
PART 63--[AMENDED]
1. The authority citation for part 63 continues to read as follows:
Authority: 42 U.S.C. 7401, et seq.
Subpart F--National Emission Standards for Organic Hazardous Air
Pollutants From the Synthetic Organic Chemical Manufacturing
Industry
2. Section 63.100 is amended as follows:
a. By revising paragraphs (b)(2), (c), (e), (f) introductory text,
(f)(1), (g) introductory text, (g)(1) introductory text in paragraphs,
(g)(2) introductory text, (h)(1) introductory text, (h)(2) introductory
text, (h)(1)(i), (h)(2)(i), (h)(2)(ii)(A), (j)(4), (k)(1), (k)(2),
(k)(3) introductory text;
b. By redesignating paragraphs (f)(6) through (f)(9) as (f)(8)
through (f)(11);
c. By adding paragraphs (f)(6), (f)(7), (g)(3), (g)(4), (h)(3), and
(k)(9); and
d. By removing paragraph (h)(2)(v).
The revisions and additions read as follows:
Sec. 63.100 Applicability and designation of source.
* * * * *
(b) * * *
(2) Use as a reactant or manufacture as a product, or co-product,
one or more of the organic hazardous air pollutants listed in table 2
of this subpart;
* * * * *
(c) The owner or operator of a chemical manufacturing process unit
that meets the criteria specified in paragraphs (b)(1) and (b)(3) of
this section but does not use as a reactant or manufacture as a product
or co-product, any organic hazardous air pollutant listed in table 2 of
this subpart shall comply only with the requirements of Sec. 63.103(e)
of this subpart. To comply with this subpart, such chemical
manufacturing process units shall not be required to comply with the
provisions of subpart A of this part.
* * * * *
(e) The source to which this subpart applies is the collection of
the process vents; storage vessels; transfer racks; waste management
units; maintenance wastewater; heat exchange systems; equipment
identified in Sec. 63.149 of subpart G; and pumps, compressors,
agitators, pressure relief devices, sampling connection systems, open-
ended valves or lines, valves, connectors, instrumentation systems,
surge control vessels, and bottoms receivers that are associated with
the collection of all chemical manufacturing process units at a major
source that meet the criteria specified in paragraphs (b)(1) through
(b)(3) of this section. The source also includes equipment required by,
or utilized as a method of compliance with this subpart F, subpart G or
H of this part which may include control devices and recovery devices.
(1) This subpart applies to maintenance wastewater and heat
exchange systems within a source that is subject to this subpart.
(2) This subpart F and subpart G of this part apply to process
vents, storage vessels, transfer racks, equipment identified in
Sec. 63.149 of subpart G of this part, and wastewater streams and
associated treatment residuals within a source that is subject to this
subpart.
(3) This subpart F and subpart H of this part apply to pumps,
compressors, agitators, pressure relief devices, sampling connection
systems, open-ended valves or lines, valves, connectors,
instrumentation systems, surge control vessels, and bottoms receivers
within a source that is subject to this subpart. If specific items of
equipment, comprising part of a chemical manufacturing process unit
subject to this subpart, are managed by different administrative
organizations (e.g., different companies, affiliates, departments,
divisions, etc.), those items of equipment may be aggregated with any
chemical manufacturing process unit within the source for all purposes
under subpart H of this part, providing there is no delay in the
applicable compliance date in Sec. 63.100(k).
(f) The source includes the emission points listed in paragraphs
(f)(1) through (f)(11) of this section, but those emission points are
not subject to the requirements of this subpart F and subparts G and H
of this part. This subpart does not require emission points that are
listed in paragraphs (f)(1) through (f)(11) of this section to comply
with the provisions of subpart A of this part.
(1) Equipment that is located within a chemical manufacturing
process unit that is subject to this subpart but the equipment does not
contain organic hazardous air pollutants.
* * * * *
(6) Water from testing of deluge systems;
(7) Water from testing of firefighting systems;
* * * * *
(g) The owner or operator shall follow the procedures specified in
paragraphs (g)(1) through (g)(4) of this section to determine whether a
storage vessel is part of the source to which this subpart applies.
(1) Where a storage vessel is dedicated to a chemical manufacturing
process unit, the storage vessel shall be considered part of that
chemical manufacturing process unit.
* * * * *
(2) If a storage vessel is not dedicated to a single chemical
manufacturing process unit, then the applicability of this subpart F
and subpart G of this part shall be determined according to the
provisions in paragraphs (g)(2)(i) through (g)(2)(iii) of this section.
* * * * *
(3) Where a storage vessel is located at a major source that
includes one or more chemical manufacturing process units which place
material into, or receive materials from the storage vessel, but the
storage vessel is located in a tank farm (including a marine tank
farm), the applicability of this subpart F and subpart G of this part
shall be determined according to the provisions in paragraphs (g)(3)(i)
through (g)(3)(iv) of this section.
(i) The storage vessel may only be assigned to a chemical
manufacturing process unit that utilizes the storage vessel and does
not have an intervening storage vessel for that product (or raw
material, as appropriate). With respect to any chemical manufacturing
process unit, an intervening storage vessel means a storage vessel
connected by hard-piping to the chemical manufacturing process unit and
to the storage vessel in the tank farm so that product or raw material
entering or leaving the chemical manufacturing process unit flows into
(or from) the intervening storage vessel and does not flow directly
into (or from) the storage vessel in the tank farm.
(ii) If there is no chemical manufacturing process unit at the
major source that meets the criteria of paragraph (g)(3)(i) of this
section with respect to a storage vessel, this subpart F and subpart G
of this part do not apply to the storage vessel.
(iii) If there is only one chemical manufacturing process unit at
the major source that meets the criteria of paragraph (g)(3)(i) of this
section with respect to a storage vessel, the storage vessel shall be
assigned to that chemical manufacturing process unit. Applicability of
this subpart F and subpart G to this part to the storage vessel shall
then be determined
[[Page 2730]]
according to the provisions of paragraph (b) of this section.
(iv) If there are two or more chemical manufacturing process units
at the major source that meet the criteria of paragraph (g)(3)(i) of
this section with respect to a storage vessel, the storage vessel shall
be assigned to one of those chemical manufacturing process units
according to the provisions of paragraph (g)(2) of this section. The
predominant use shall be determined among only those chemical
manufacturing process units that meet the criteria of paragraph
(g)(3)(i) of this section. Applicability of this subpart F and subpart
G of this part to the storage vessel shall then be determined according
to the provisions of paragraph (b) of this section.
(4) If the storage vessel begins receiving material from (or
sending material to) another chemical manufacturing process unit, or
ceasing to receive material from (or send material to) a chemical
manufacturing process unit, or if the applicability of this subpart F
and subpart G of this part to a storage vessel has been determined
according to the provisions of paragraphs (g)(2)(i) through (g)(2)(iii)
of this section and there is a change so that the predominant use may
reasonably have changed, the owner or operator shall reevaluate the
applicability of this subpart to the storage vessel.
(h) * * *
(1) Where a loading rack is dedicated to a chemical manufacturing
process unit, the loading rack shall be considered part of that
specific chemical manufacturing process unit.
(i) If the chemical manufacturing process unit is subject to this
subpart according to the criteria specified in paragraph (b) of this
section and the loading rack does not meet the criteria specified in
paragraphs (f)(9) and (f)(10) of this section, then the loading rack is
considered a transfer rack (as defined in Sec. 63.101 of this subpart)
and is part of the source to which this subpart applies.
* * * * *
(2) If a loading rack is shared among chemical manufacturing
process units, then the applicability of this subpart F and subpart G
of this part shall be determined at each loading arm or loading hose
according to the provisions in paragraphs (h)(2)(i) through (h)(2)(iv)
of this section.
(i) Each loading arm or loading hose that is dedicated to the
transfer of liquid organic hazardous air pollutants listed in table 2
of this subpart from a chemical manufacturing process unit to which
this subpart applies is part of that chemical manufacturing process
unit and is part of the source to which this subpart applies unless the
loading arm or loading hose meets the criteria specified in paragraphs
(f)(9) or (f)(10) of this section.
(ii) * * *
(A) If the chemical manufacturing process unit is subject to this
subpart according to the criteria specified in paragraph (b) of this
section, then the loading arm or loading hose is part of the source to
which this subpart applies unless the loading arm or loading hose meets
the criteria specified in paragraphs (f)(9) or (f)(10) of this section.
* * * * *
(3) If a loading rack that was dedicated to a single chemical
manufacturing process unit begins to serve another chemical
manufacturing process unit, or if applicability was determined under
the provisions of paragraphs (h)(2)(i) through (h)(2)(iv) of this
section and there is a change so that the predominant use may
reasonably have changed, the owner or operator shall reevaluate the
applicability of this subpart to the loading rack, loading arm, or
loading hose.
* * * * *
(j) * * *
(4) Process vents from batch operations within a chemical
manufacturing process unit;
* * * * *
(k) * * *
(1)(i) New sources that commence construction or reconstruction
after December 31, 1992, but before August 27, 1996 shall be in
compliance with this subpart F, subparts G and H of this part upon
initial start-up or by April 22, 1994, whichever is later, as provided
in Sec. 63.6(b) of subpart A of this part, and further, where start-up
occurs before January 17, 1997 shall also be in compliance with this
subpart F and subparts G and H of this part (as amended on January 17,
1997) by January 17, 1997, except that, with respect to all new sources
that commenced construction or reconstruction after December 31, 1992,
and before August 27, 1996:
(A) Heat exchange systems and maintenance wastewater, that are part
of a new source on which construction or reconstruction commenced after
December 31, 1992, but before August 27, 1996, shall be in compliance
with this subpart F no later than initial start-up or 180 days after
January 17, 1997, whichever is later;
(B) Process wastewater streams and equipment subject to
Sec. 63.149, that are part of a new source on which construction or
reconstruction commenced after December 31, 1992, but before August 27,
1996, shall be in compliance with this subpart F and subpart G of this
part no later than initial start-up or 180 days after January 17, 1997,
whichever is later; and
(ii) New sources that commence construction after August 26, 1996
shall be in compliance with this subpart F, subparts G and H of this
part upon initial start-up or by January 17, 1997, whichever is later.
(2) Existing sources shall be in compliance with this subpart F and
subpart G of this part no later than the dates specified in paragraphs
(k)(2)(i) and (k)(2)(ii) of this section, unless an extension has been
granted by the Administrator as provided in Sec. 63.151(a)(6) of
subpart G of this part or granted by the permitting authority as
provided in Sec. 63.6(i) of subpart A of this part.
(i) Process vents, storage vessels, and transfer racks at an
existing source shall be in compliance with the applicable sections of
this subpart and subpart G of this part no later than April 22, 1997.
(ii) Heat exchange systems and maintenance wastewater shall be in
compliance with the applicable sections of this subpart, and equipment
subject to Sec. 63.149 and process wastewater streams shall be in
compliance with the applicable sections of this subpart and subpart G
of this part no later than April 22, 1999, except as provided in
paragraphs (k)(2)(ii)(A) and (k)(2)(ii)(B) of this section.
(A) If a process wastewater stream or equipment subject to
Sec. 63.149 is subject to the control requirements of subpart G of this
part due to the contribution of nitrobenzene to the total annual
average concentration (as determined according to the procedures in
Sec. 63.144(b) of subpart G of this part), the wastewater stream shall
be in compliance no later than January 18, 2000.
(B) If a process wastewater stream is used to generate credits in
an emissions average in accordance with Sec. 63.150 of subpart G of
this part, the process wastewater stream shall be in compliance with
the applicable sections of subpart G of this part no later than April
22, 1997.
(3) Existing sources shall be in compliance with subpart H of this
part no later than the dates specified in paragraphs (k)(3)(i) through
(k)(3)(v) of this section, except as provided for in paragraphs (k)(4)
through (k)(8) of this section, unless an extension has been granted by
the Administrator as provided in Sec. 63.182(a)(6) of this part or
granted by the permitting authority as provided in Sec. 63.6(i) of
subpart A of this part. The group designation for each
[[Page 2731]]
process unit is indicated in table 1 of this subpart.
* * * * *
(9) All terms in this subpart F or subpart G of this part that
define a period of time for completion of required tasks (e.g., weekly,
monthly, quarterly, annual), unless specified otherwise in the section
or subsection that imposes the requirement, refer to the standard
calendar periods.
(i) Notwithstanding time periods specified in this subpart F or
subpart G of this part for completion of required tasks, such time
periods may be changed by mutual agreement between the owner or
operator and the Administrator, as specified in subpart A of this part
(e.g., a period could begin on the compliance date or another date,
rather than on the first day of the standard calendar period). For each
time period that is changed by agreement, the revised period shall
remain in effect until it is changed. A new request is not necessary
for each recurring period.
(ii) Where the period specified for compliance is a standard
calendar period, if the initial compliance date occurs after the
beginning of the period, compliance shall be required according to the
schedule specified in paragraphs (k)(9)(ii)(A) or (k)(9)(ii)(B) of this
section, as appropriate.
(A) Compliance shall be required before the end of the standard
calendar period within which the compliance deadline occurs, if there
remain at least 3 days for tasks that must be performed weekly, at
least 2 weeks for tasks that must be performed monthly, at least 1
month for tasks that must be performed each quarter, or at least 3
months for tasks that must be performed annually; or
(B) In all other cases, compliance shall be required before the end
of the first full standard calendar period after the period within
which the initial compliance deadline occurs.
(iii) In all instances where a provision of this subpart F or
subpart G of this part requires completion of a task during each of
multiple successive periods, an owner or operator may perform the
required task at any time during the specified period, provided the
task is conducted at a reasonable interval after completion of the task
during the previous period.
* * * * *
3. Section 63.101 is amended as follows:
a. By revising the definitions of ``Chemical manufacturing process
unit,'' ``Control device'', ``Process vent'', ``Recovery device,''
``Shutdown'', and ``Start-up'', the first sentence in the definition
for ``Transfer rack'', and revising the definitions for ``Unit
operation'', and ``Vapor balancing system''; and ``Wastewater''; and
b. By adding in alphabetical order the definitions of ``Fuel gas,''
``Fuel gas system'', ``On-site or On site'', ``Recapture device'', and
``Waste management unit'' to read as follows:
Sec. 63.101 Definitions.
* * * * *
Chemical manufacturing process unit means the equipment assembled
and connected by pipes or ducts to process raw materials and to
manufacture an intended product. A chemical manufacturing process unit
consists of more than one unit operation. For the purpose of this
subpart, chemical manufacturing process unit includes air oxidation
reactors and their associated product separators and recovery devices;
reactors and their associated product separators and recovery devices;
distillation units and their associated distillate receivers and
recovery devices; associated unit operations; associated recovery
devices; and any feed, intermediate and product storage vessels,
product transfer racks, and connected ducts and piping. A chemical
manufacturing process unit includes pumps, compressors, agitators,
pressure relief devices, sampling connection systems, open-ended valves
or lines, valves, connectors, instrumentation systems, and control
devices or systems. A chemical manufacturing process unit is identified
by its primary product.
Control device means any combustion device, recovery device, or
recapture device. Such equipment includes, but is not limited to,
absorbers, carbon adsorbers, condensers, incinerators, flares, boilers,
and process heaters. For process vents (as defined in this section),
recapture devices are considered control devices but recovery devices
are not considered control devices. For a steam stripper, a primary
condenser is not considered a control device.
* * * * *
Fuel gas means gases that are combusted to derive useful work or
heat.
Fuel gas system means the offsite and onsite piping and flow and
pressure control system that gathers gaseous stream(s) generated by
onsite operations, may blend them with other sources of gas, and
transports the gaseous stream for use as fuel gas in combustion devices
or in in-process combustion equipment such as furnaces and gas turbines
either singly or in combination.
* * * * *
On-site or On site means, with respect to records required to be
maintained by this subpart, that the records are stored at a location
within a major source which encompasses the affected source. On-site
includes, but is not limited to, storage at the chemical manufacturing
process unit to which the records pertain, or storage in central files
elsewhere at the major source.
* * * * *
Process vent means a gas stream containing greater than 0.005
weight-percent total organic hazardous air pollutants that is
continuously discharged during operation of the unit from an air
oxidation reactor, other reactor, or distillation unit (as defined in
this section) within a chemical manufacturing process unit that meets
all applicability criteria specified in Sec. 63.100 (b)(1) through
(b)(3) of this subpart. Process vents are gas streams that are
discharged to the atmosphere (with or without passing through a control
device) either directly or after passing through one or more recovery
devices. Process vents exclude relief valve discharges, gaseous streams
routed to a fuel gas system(s), and leaks from equipment regulated
under subpart H of this part.
* * * * *
Recapture device means an individual unit of equipment capable of
and used for the purpose of recovering chemicals, but not normally for
use, reuse, or sale. For example, a recapture device may recover
chemicals primarily for disposal. Recapture devices include, but are
not limited to, absorbers, carbon adsorbers, and condensers.
Recovery device means an individual unit of equipment capable of
and normally used for the purpose of recovering chemicals for fuel
value (i.e., net positive heating value), use, reuse or for sale for
fuel value, use, or reuse. Examples of equipment that may be recovery
devices include absorbers, carbon adsorbers, condensers, oil-water
separators or organic-water separators, or organic removal devices such
as decanters, strippers, or thin-film evaporation units. For purposes
of the monitoring, recordkeeping, and reporting requirements of subpart
G of this part, recapture devices are considered recovery devices.
* * * * *
Shutdown means for purposes including, but not limited to, periodic
maintenance, replacement of equipment, or repair, the cessation of
operation of a chemical manufacturing
[[Page 2732]]
process unit or a reactor, air oxidation reactor, distillation unit,
waste management unit, equipment required or used to comply with this
subpart F, subparts G, or H of this part or the emptying and degassing
of a storage vessel. Shutdown does not include the routine rinsing or
washing of equipment in batch operation between batches.
* * * * *
Start-up means the setting into operation of a chemical
manufacturing process unit or a reactor, air oxidation reactor,
distillation unit, waste management unit, or equipment required or used
to comply with this subpart F, subpart G, or H of this part or a
storage vessel after emptying and degassing. Start-up includes initial
start-up, operation solely for testing equipment, the recharging of
equipment in batch operation, and transitional conditions due to
changes in product for flexible operation units.
* * * * *
Transfer rack means the collection of loading arms and loading
hoses, at a single loading rack, that are assigned to a chemical
manufacturing process unit subject to this subpart according to the
procedures specified in Sec. 63.100(h) of this subpart and are used to
fill tank trucks and/or railcars with organic liquids that contain one
or more of the organic hazardous air pollutants listed in table 2 of
this subpart. * * *
* * * * *
Unit operation means one or more pieces of process equipment used
to make a single change to the physical or chemical characteristics of
one or more process streams. Unit operations include, but are not
limited to, reactors, distillation units, extraction columns,
absorbers, decanters, dryers, condensers, and filtration equipment.
Vapor balancing system means a piping system that is designed to
collect organic hazardous air pollutants vapors displaced from tank
trucks or railcars during loading; and to route the collected organic
hazardous air pollutants vapors to the storage vessel from which the
liquid being loaded originated, or to another storage vessel connected
by a common header or to compress and route to a process or a fuel gas
system the collected organic hazardous air pollutants vapors.
Waste management unit means the equipment, structure(s), and/or
device(s) used to convey, store, treat, or dispose of wastewater
streams or residuals. Examples of waste management units include:
Wastewater tanks, surface impoundments, individual drain systems, and
biological wastewater treatment units. Examples of equipment that may
be waste management units include containers, air flotation units, oil-
water separators or organic-water separators, or organic removal
devices such as decanters, strippers, or thin-film evaporation units.
If such equipment is used for recovery then it is part of a chemical
manufacturing process unit and is not a waste management unit.
Wastewater means water that:
(1) Contains either:
(i) an annual average concentration of Table 9 compounds (as
defined in Sec. 63.111 of subpart G of this part) of at least 5 parts
per million by weight and has an annual average flow rate of 0.02 liter
per minute or greater, or
(ii) An annual average concentration of Table 9 compounds (as
defined in Sec. 63.111 of subpart G) of at least 10,000 parts per
million by weight at any flow rate, and that
(2) Is discarded from a chemical manufacturing process unit that
meets all of the criteria specified in Sec. 63.100 (b)(1) through
(b)(3) of this subpart. Wastewater is process wastewater or maintenance
wastewater.
4. Section 63.102 is amended by revising paragraphs (a)(1) and
(a)(2); adding paragraphs (a)(3) and (a)(4) to read as follows:
Sec. 63.102 General standards.
(a) * * *
(1) The provisions set forth in this subpart F and subpart G of
this part shall apply at all times except during periods of start-up or
shutdown (as defined in Sec. 63.101 of this subpart), malfunction, or
non-operation of the chemical manufacturing process unit (or specific
portion thereof) resulting in cessation of the emissions to which this
subpart F and subpart G of this part apply. However, if a start-up,
shutdown, malfunction or period of non-operation of one portion of a
chemical manufacturing process unit does not affect the ability of a
particular emission point to comply with the specific provisions to
which it is subject, then that emission point shall still be required
to comply with the applicable provisions of this subpart F and subpart
G of this part during the start-up, shutdown, malfunction or period of
non-operation. For example, if there is an overpressure in the reactor
area, a storage vessel in the chemical manufacturing process unit would
still be required to be controlled in accordance with Sec. 63.119 of
subpart G of the part. Similarly, the degassing of a storage vessel
would not affect the ability of a process vent to meet the requirements
of Sec. 63.113 of subpart G of this part.
(2) The provisions set forth in subpart H of this part shall apply
at all times except during periods of start-up or shutdown, as defined
in Sec. 63.101(b) of this subpart, malfunction, process unit shutdown
(as defined in Sec. 63.161 of subpart H of this part), or non-operation
of the chemical manufacturing process unit (or specific portion
thereof) in which the lines are drained and depressurized resulting in
cessation of the emissions to which subpart H of this part applies.
(3) The owner or operator shall not shut down items of equipment
that are required or utilized for compliance with the provisions of
this subpart F, subpart G or H of this part during times when emissions
(or, where applicable, wastewater streams or residuals) are being
routed to such items of equipment, if the shutdown would contravene
requirements of this subpart F, subpart G or H of this part applicable
to such items of equipment. This paragraph does not apply if the item
of equipment is malfunctioning, or if the owner or operator must shut
down the equipment to avoid damage due to a contemporaneous start-up,
shutdown, or malfunction of the chemical manufacturing process unit or
portion thereof.
(4) During start-ups, shutdowns, and malfunctions when the
requirements of this subpart F, subparts G and/or H of this part do not
apply pursuant to paragraphs (a)(1) through (a)(3) of this section, the
owner or operator shall implement, to the extent reasonably available,
measures to prevent or minimize excess emissions to the extent
practical. For purposes of this paragraph, the term ``excess
emissions'' means emissions in excess of those that would have occurred
if there were no start-up, shutdown, or malfunction and the owner or
operator complied with the relevant provisions of this subpart F,
subparts G and/or H of this part. The measures to be taken shall be
identified in the applicable start-up, shutdown, and malfunction plan,
and may include, but are not limited to, air pollution control
technologies, recovery technologies, work practices, pollution
prevention, monitoring, and/or changes in the manner of operation of
the source. Back-up control devices are not required, but may be used
if available.
* * * * *
5. Section 63.103 is amended by adding two sentences to the end of
the introductory text of paragraph (c); revising paragraphs (c)(1),
(c)(2)(i), (c)(2)(ii), and (c)(2)(iii); removing paragraph (c)(2)(iv);
revising paragraph (d)(1); revising paragraph (e); and
[[Page 2733]]
revising the last sentence of paragraph (f) to read as follows:
Sec. 63.103 General compliance, reporting, and recordkeeping
provisions.
* * * * *
(c) * * * If an owner or operator submits copies of reports to the
applicable EPA Regional Office, the owner or operator is not required
to maintain copies of reports. If the EPA Regional Office has waived
the requirement of Sec. 63.10(a)(4)(ii) for submittal of copies of
reports, the owner or operator is not required to maintain copies of
reports.
(1) All applicable records shall be maintained in such a manner
that they can be readily accessed. The most recent 6 months of records
shall be retained on site or shall be accessible from a central
location by computer or other means that provides access within 2 hours
after a request. The remaining four and one-half years of records may
be retained offsite. Records may be maintained in hard copy or
computer-readable form including, but not limited to, on paper,
microfilm, computer, floppy disk, magnetic tape, or microfiche.
(2) * * *
(i) Records of the occurrence and duration of each start-up,
shutdown, and malfunction of operation of process equipment or of air
pollution control equipment or continuous monitoring systems used to
comply with this subpart F, subpart G, or H of this part during which
excess emissions (as defined in Sec. 63.102(a)(4)) occur.
(ii) For each start-up, shutdown, and malfunction during which
excess emissions (as defined in Sec. 63.102(a)(4)) occur, records that
the procedures specified in the source's start-up, shutdown, and
malfunction plan were followed, and documentation of actions taken that
are not consistent with the plan. For example, if a start-up, shutdown,
and malfunction plan includes procedures for routing a control device
to a backup control device (e.g., the incinerator for a halogenated
stream could be routed to a flare during periods when the primary
control device is out of service), records must be kept of whether the
plan was followed. These records may take the form of a ``checklist,''
or other form of recordkeeping that confirms conformance with the
start-up, shutdown, and malfunction plan for the event.
(iii) For continuous monitoring systems used to comply with subpart
G of this part, records documenting the completion of calibration
checks and maintenance of continuous monitoring systems that are
specified in the manufacturer's instructions or other written
procedures that provide adequate assurance that the equipment would
reasonably be expected to monitor accurately.
* * * * *
(d) * * *
(1) Wherever subpart A of this part specifies ``postmark'' dates,
submittals may be sent by methods other than the U.S. Mail (e.g., by
fax or courier). Submittals shall be sent on or before the specified
date.
* * * * *
(e) The owner or operator of a chemical manufacturing process unit
which meets the criteria of Sec. 63.100(b)(1) and Sec. 63.100(b)(3),
but not the criteria of Sec. 63.100(b)(2), shall comply with the
requirements of either paragraph (e)(1) or (e)(2) of this section.
(1) Retain information, data, and analysis used to determine that
the chemical manufacturing process unit does not use as a reactant or
manufacture as a product or co-product any organic hazardous air
pollutant. Examples of information that could document this include,
but are not limited to, records of chemicals purchased for the process,
analyses of process stream composition, engineering calculations, or
process knowledge.
(2) When requested by the Administrator, demonstrate that the
chemical manufacturing process unit does not use as a reactant or
manufacture as a product or co-product any organic hazardous air
pollutant.
* * * * *
(f) * * * Compliance with this subpart F and subpart G of this part
shall be no later than April 22, 1997, or as otherwise specified in
Sec. 63.100(k)(2)(ii) of this subpart, unless an extension has been
granted by the EPA Regional Office or permitting authority as provided
in Sec. 63.6(i) of subpart A of this part.
* * * * *
6. Section 63.104 is revised to read as follows:
Sec. 63.104 Heat exchange system requirements.
(a) Unless one or more of the conditions specified in paragraphs
(a)(1) through (a)(6) of this section are met, owners and operators of
sources subject to this subpart shall monitor each heat exchange system
used to cool process equipment in a chemical manufacturing process unit
meeting the conditions of Sec. 63.100 (b)(1) through (b)(3) of this
subpart, except for chemical manufacturing process units meeting the
condition specified in Sec. 63.100(c) of this subpart, according to the
provisions in either paragraph (b) or (c) of this section. Whenever a
leak is detected, the owner or operator shall comply with the
requirements in paragraph (d) of this section.
(1) The heat exchange system is operated with the minimum pressure
on the cooling water side at least 35 kilopascals greater than the
maximum pressure on the process side.
(2) There is an intervening cooling fluid, containing less than 5
percent by weight of total hazardous air pollutants listed in table 4
of this subpart, between the process and the cooling water. This
intervening fluid serves to isolate the cooling water from the process
fluid and the intervening fluid is not sent through a cooling tower or
discharged. For purposes of this section, discharge does not include
emptying for maintenance purposes.
(3) The once-through heat exchange system is subject to a National
Pollution Discharge Elimination System (NPDES) permit with an allowable
discharge limit of 1 part per million or less above influent
concentration or 10 percent or less above influent concentration,
whichever is greater.
(4) The once-through heat exchange system is subject to an NPDES
permit that:
(i) Requires monitoring of a parameter(s) or condition(s) to detect
a leak of process fluids into cooling water;
(ii) Specifies or includes the normal range of the parameter or
condition;
(iii) Requires monitoring for the parameters selected as leak
indicators no less frequently than monthly for the first six months and
quarterly thereafter; and
(iv) Requires the owner or operator to report and correct leaks to
the cooling water when the parameter or condition exceeds the normal
range.
(5) The recirculating heat exchange system is used to cool process
fluids that contain less than 5 percent by weight of total hazardous
air pollutants listed in table 4 of this subpart.
(6) The once-through heat exchange system is used to cool process
fluids that contain less than 5 percent by weight of total hazardous
air pollutants listed in table 9 of subpart G of this part.
(b) The owner or operator who elects to comply with the
requirements of paragraph (a) of this section by monitoring the cooling
water for the presence of one or more organic hazardous air pollutants
or other representative substances whose presence in cooling water
indicates a leak shall comply with the requirements specified in
paragraphs (b)(1) through (b)(6) of this section. The cooling water
shall be monitored for total hazardous
[[Page 2734]]
air pollutants, total volatile organic compounds, total organic carbon,
one or more speciated HAP compounds, or other representative substances
that would indicate the presence of a leak in the heat exchange system.
(1) The cooling water shall be monitored monthly for the first 6
months and quarterly thereafter to detect leaks.
(2)(i) For recirculating heat exchange systems (cooling tower
systems), the monitoring of speciated hazardous air pollutants or total
hazardous air pollutants refers to the hazardous air pollutants listed
in table 4 of this subpart.
(ii) For once-through heat exchange systems, the monitoring of
speciated hazardous air pollutants or total hazardous air pollutants
refers to the hazardous air pollutants listed in table 9 of subpart G
of this part.
(3) The concentration of the monitored substance(s) in the cooling
water shall be determined using any EPA-approved method listed in part
136 of this chapter as long as the method is sensitive to
concentrations as low as 10 parts per million and the same method is
used for both entrance and exit samples. Alternative methods may be
used upon approval by the Administrator.
(4) The samples shall be collected either at the entrance and exit
of each heat exchange system or at locations where the cooling water
enters and exits each heat exchanger or any combination of heat
exchangers.
(i) For samples taken at the entrance and exit of recirculating
heat exchange systems, the entrance is the point at which the cooling
water leaves the cooling tower prior to being returned to the process
equipment and the exit is the point at which the cooling water is
introduced to the cooling tower after being used to cool the process
fluid.
(ii) For samples taken at the entrance and exit of once-through
heat exchange systems, the entrance is the point at which the cooling
water enters and the exit is the point at which the cooling water exits
the plant site or chemical manufacturing process units.
(iii) For samples taken at the entrance and exit of each heat
exchanger or any combination of heat exchangers in chemical
manufacturing process units, the entrance is the point at which the
cooling water enters the individual heat exchanger or group of heat
exchangers and the exit is the point at which the cooling water exits
the heat exchanger or group of heat exchangers.
(5) A minimum of three sets of samples shall be taken at each
entrance and exit as defined in paragraph (b)(4) of this section. The
average entrance and exit concentrations shall then be calculated. The
concentration shall be corrected for the addition of any makeup water
or for any evaporative losses, as applicable.
(6) A leak is detected if the exit mean concentration is found to
be greater than the entrance mean using a one-sided statistical
procedure at the 0.05 level of significance and the amount by which it
is greater is at least 1 part per million or 10 percent of the entrance
mean, whichever is greater.
(c) The owner or operator who elects to comply with the requirement
of paragraph (a) of this section by monitoring using a surrogate
indicator of heat exchange system leaks shall comply with the
requirements specified in paragraphs (c)(1) through (c)(3) of this
section. Surrogate indicators that could be used to develop an
acceptable monitoring program are ion specific electrode monitoring,
pH, conductivity or other representative indicators.
(1) The owner or operator shall prepare and implement a monitoring
plan that documents the procedures that will be used to detect leaks of
process fluids into cooling water. The plan shall require monitoring of
one or more surrogate indicators or monitoring of one or more process
parameters or other conditions that indicate a leak. Monitoring that is
already being conducted for other purposes may be used to satisfy the
requirements of this section. The plan shall include the information
specified in paragraphs (c)(1)(i) and (c)(1)(ii) of this section.
(i) A description of the parameter or condition to be monitored and
an explanation of how the selected parameter or condition will reliably
indicate the presence of a leak.
(ii) The parameter level(s) or conditions(s) that shall constitute
a leak. This shall be documented by data or calculations showing that
the selected levels or conditions will reliably identify leaks. The
monitoring must be sufficiently sensitive to determine the range of
parameter levels or conditions when the system is not leaking. When the
selected parameter level or condition is outside that range, a leak is
indicated.
(iii) The monitoring frequency which shall be no less frequent than
monthly for the first 6 months and quarterly thereafter to detect
leaks.
(iv) The records that will be maintained to document compliance
with the requirements of this section.
(2) If a substantial leak is identified by methods other than those
described in the monitoring plan and the method(s) specified in the
plan could not detect the leak, the owner or operator shall revise the
plan and document the basis for the changes. The owner or operator
shall complete the revisions to the plan no later than 180 days after
discovery of the leak.
(3) The owner or operator shall maintain, at all times, the
monitoring plan that is currently in use. The current plan shall be
maintained on-site, or shall be accessible from a central location by
computer or other means that provides access within 2 hours after a
request. If the monitoring plan is superseded, the owner or operator
shall retain the most recent superseded plan at least until 5 years
from the date of its creation. The superseded plan shall be retained
on-site (or accessible from a central location by computer or other
means that provides access within two hours after a request) for at
least 6 months after its creation.
(d) If a leak is detected according to the criteria of paragraph
(b) or (c) of this section, the owner or operator shall comply with the
requirements in paragraphs (d)(1) and (d)(2) of this section, except as
provided in paragraph (e) of this section.
(1) The leak shall be repaired as soon as practical but not later
than 45 calendar days after the owner or operator receives results of
monitoring tests indicating a leak. The leak shall be repaired unless
the owner or operator demonstrates that the results are due to a
condition other than a leak.
(2) Once the leak has been repaired, the owner or operator shall
confirm that the heat exchange system has been repaired within 7
calendar days of the repair or startup, whichever is later.
(e) Delay of repair of heat exchange systems for which leaks have
been detected is allowed if the equipment is isolated from the process.
Delay of repair is also allowed if repair is technically infeasible
without a shutdown and any one of the conditions in paragraph (e)(1) or
(e)(2) of this section is met. All time periods in paragraphs (e)(1)
and (e)(2) of this section shall be determined from the date when the
owner or operator determines that delay of repair is necessary.
(1) If a shutdown is expected within the next 2 months, a special
shutdown before that planned shutdown is not required.
(2) If a shutdown is not expected within the next 2 months, the
owner or operator may delay repair as provided in paragraph (e)(2)(i)
or (e)(2)(ii) of this section. Documentation of a decision to delay
repair shall state the reasons repair was delayed and shall specify a
[[Page 2735]]
schedule for completing the repair as soon as practical.
(i) If a shutdown for repair would cause greater emissions than the
potential emissions from delaying repair, the owner or operator may
delay repair until the next shutdown of the process equipment
associated with the leaking heat exchanger. The owner or operator shall
document the basis for the determination that a shutdown for repair
would cause greater emissions than the emissions likely to result from
delaying repair as specified in paragraphs (e)(2)(i)(A) and
(e)(2)(i)(B) of this section.
(A) The owner or operator shall calculate the potential emissions
from the leaking heat exchanger by multiplying the concentration of
total hazardous air pollutants listed in table 4 of this subpart in the
cooling water from the leaking heat exchanger by the flowrate of the
cooling water from the leaking heat exchanger by the expected duration
of the delay. The owner or operator may calculate potential emissions
using total organic carbon concentration instead of total hazardous air
pollutants listed in table 4 of this subpart.
(B) The owner or operator shall determine emissions from purging
and depressurizing the equipment that will result from the unscheduled
shutdown for the repair.
(ii) If repair is delayed for reasons other than those specified in
paragraph (e)(2)(i) of this section, the owner or operator may delay
repair up to a maximum of 120 calendar days. The owner shall
demonstrate that the necessary parts or personnel were not available.
(f)(1) Required records. The owner or operator shall retain the
records identified in paragraphs (f)(1)(i) through (f)(1)(iv) of this
section as specified in Sec. 63.103(c)(1).
(i) Monitoring data required by this section indicating a leak and
the date when the leak was detected, and if demonstrated not to be a
leak, the basis for that determination;
(ii) Records of any leaks detected by procedures subject to
paragraph (c)(2) of this section and the date the leak was discovered;
(iii) The dates of efforts to repair leaks; and
(iv) The method or procedure used to confirm repair of a leak and
the date repair was confirmed.
(2) Reports. If an owner or operator invokes the delay of repair
provisions for a heat exchange system, the following information shall
be submitted in the next semi-annual periodic report required by
Sec. 63.152(c) of subpart G of this part. If the leak remains
unrepaired, the information shall also be submitted in each subsequent
periodic report, until repair of the leak is reported.
(i) The owner or operator shall report the presence of the leak and
the date that the leak was detected.
(ii) The owner or operator shall report whether or not the leak has
been repaired.
(iii) The owner or operator shall report the reason(s) for delay of
repair. If delay of repair is invoked due to the reasons described in
paragraph (e)(2) of this section, documentation of emissions estimates
must also be submitted.
(iv) If the leak remains unrepaired, the owner or operator shall
report the expected date of repair.
(v) If the leak is repaired, the owner or operator shall report the
date the leak was successfully repaired.
7. Current tables 2 and 3 of subpart F are revised and table 4 is
added to read as follows:
Table 2 to Supbart F--Organic Hazardous Air Pollutants
------------------------------------------------------------------------
Chemical name a,b CAS No.c
------------------------------------------------------------------------
Acenaphthene............................................ 83329
Acetaldehyde............................................ 75070
Acetamide............................................... 60355
Acetonitrile............................................ 75058
Acetophenone............................................ 98862
Acrolein................................................ 107028
Acrylamide.............................................. 79061
Acrylic acid............................................ 79107
Acrylonitrile........................................... 107131
Alizarin................................................ 72480
Allyl chloride.......................................... 107051
Aniline................................................. 62533
Anisidine (o-).......................................... 90040
Anthracene.............................................. 120127
Anthraquinone........................................... 84651
Benzene................................................. 71432
Benzotrichloride........................................ 98077
Benzyl chloride......................................... 100447
Biphenyl................................................ 92524
Bis(chloromethyl)ether.................................. 542881
Bromoform............................................... 75252
Bromonaphthalene........................................ 27497514
Butadiene (1,3-)........................................ 106990
Carbon disulfide........................................ 75150
Carbon tetrachloride.................................... 56235
Chloroacetic acid....................................... 79118
Chloroacetophenone (2-)................................. 532274
Chlorobenzene........................................... 108907
2-Chloro-,1,3-butadiene (Chloroprene)................... 126998
Chloroform.............................................. 67663
Chloronaphthalene....................................... 25586430
Chrysene................................................ 218019
Cresols and cresylic acids (mixed)...................... 1319773
Cresol and cresylic acid (o-)........................... 95487
Cresol and cresylic acid (m-)........................... 108394
[[Page 2736]]
Cresol and cresylic acid (p-)........................... 106445
Cumene.................................................. 98828
Dichlorobenzene (p-).................................... 106467
Dichlorobenzidine (3,3'-)............................... 91941
Dichloroethane (1,2-) (Ethylene dichloride) (EDC)....... 107062
Dichloroethylether (Bis(2-chloroethyl)ether)............ 111444
Dichloropropene (1,3-).................................. 542756
Diethanolamine (2,2'-Iminodiethanol).................... 111422
Dimethylaniline (N,N-).................................. 121697
Diethyl sulfate......................................... 64675
Dimethylbenzidine (3,3'-)............................... 119937
Dimethylformamide (N,N-)................................ 68122
Dimethylhydrazine (1,1-)................................ 58147
Dimethylphthalate....................................... 131113
Dimethylsulfate......................................... 77781
Dinitrophenol (2,4-).................................... 51285
Dinitrotoluene (2,4-)................................... 121142
Dioxane (1,4-) (1,4-Diethyleneoxide).................... 123911
1,2-Diphenylhydrazine................................... 122667
Epichlorohydrin (1-Chloro-2,3-epoxypropane)............. 106898
Ethyl acrylate.......................................... 140885
Ethylbenzene............................................ 100414
Ethyl chloride (Chloroethane)........................... 75003
Ethylene dibromide (Dibromoethane)...................... 106934
Ethylene glycol......................................... 107211
Ethylene oxide.......................................... 75218
Ethylidene dichloride (1,1-Dichloroethane).............. 75343
Fluoranthene............................................ 206440
Formaldehyde............................................ 50000
Glycol ethersd..........................................
Hexachlorobenzene....................................... 118741
Hexachlorobutadiene..................................... 87683
Hexachloroethane........................................ 67721
Hexane.................................................. 110543
Hydroquinone............................................ 123319
Isophorone.............................................. 78591
Maleic anhydride........................................ 108316
Methanol................................................ 67561
Methylbromide (Bromomethane)............................ 74839
Methylchloride (Chloromethane).......................... 74873
Methyl ethyl ketone (2-Butanone)........................ 78933
Methyl hydrazine........................................ 60344
Methyl isobutyl ketone (Hexone)......................... 108101
Methyl isocyanate....................................... 624839
Methyl methacrylate..................................... 80626
Methyl tert-butyl ether................................. 1634044
Methylene chloride (Dichloromethane).................... 75092
Methylene diphenyl diisocyanate (4,4'-) (MDI)........... 101688
Methylenedianiline (4,4'-).............................. 101779
Naphthalene............................................. 91203
Naphthalene sulfonic acid ()................... 85472
Naphthalene sulfonic acid ()................... 120183
Naphthol ().................................... 90153
Naphthol ().................................... 135193
Naphtholsulfonic acid (1-).............................. 567180
Naphthylamine sulfonic acid (1,4-)...................... 84866
Naphthylamine sulfonic acid (2,1-)...................... 81163
Naphthylamine (1-)...................................... 134327
Naphthylamine (2-)...................................... 91598
Nitronaphthalene (1-)................................... 86577
Nitrobenzene............................................ 98953
Nitrophenol (p-)........................................ 100027
Nitropropane (2-)....................................... 79469
Phenanthrene............................................ 85018
Phenol.................................................. 108952
Phenylenediamine (p-)................................... 106503
Phosgene................................................ 75445
Phthalic anhydride...................................... 85449
Propiolactone (beta-)................................... 57578
Propionaldehyde......................................... 123386
Propylene dichloride (1,2-Dichloropropane).............. 78875
Propylene oxide......................................... 75569
[[Page 2737]]
Pyrene.................................................. 129000
Quinone................................................. 106514
Styrene................................................. 100425
Tetrachloroethane (1,1,2,2-)............................ 79345
Tetrachloroethylene (Perchloroethylene)................. 127184
Tetrahydronaphthalene................................... 119642
Toluene................................................. 108883
Toluene diamine (2,4-).................................. 95807
Toluene diisocyanate (2,4-)............................. 584849
Toluidine (o-).......................................... 95534
Trichlorobenzene (1,2,4-)............................... 120821
Trichloroethane (1,1,1-) (Methyl chloroform)............ 71556
Trichloroethane (1,1,2-) (Vinyl trichloride)............ 79005
Trichloroethylene....................................... 79016
Trichlorophenol (2,4,5-)................................ 95954
Triethylamine........................................... 121448
Trimethylpentane (2,2,4-)............................... 540841
Vinyl acetate........................................... 108054
Vinyl chloride (Chloroethylene)......................... 75014
Vinylidene chloride (1,1-Dichloroethylene).............. 75354
Xylenes (NOS)........................................... 1330207
Xylene (m-)............................................. 108383
Xylene (o-)............................................. 95476
Xylene (p-)............................................. 106423
------------------------------------------------------------------------
a For all Listings above containing the word ``Compounds,'' the
following applies: Unless otherwise specified, these listings are
defined as including any unique chemical substance that contains the
named chemical (i.e., antimony, arsenic) as part of that chemical's
infrastructure.
b Isomer means all structural arrangements for the same number of atoms
of each element and does not mean salts, esters, or derivatives.
c CAS No.=Chemical Abstract Service number.
d Includes mono- and di- ethers of ethylene glycol, diethylene glycol,
and triethylene glycol R-(OCH2CH2)n-OR where:
n=1, 2, or 3;
R=alkyl or aryl groups; and
R'=R, H or groups which, when removed, yield glycol ethers with the
structure:
R-(OCH2CH2)n-OH
Polymers are excluded from the glycol category.
Table 3.--General Provisions Applicability to Subparts F, G, and Ha
--------------------------------------------------------------------------------------------------------------------------------------------------------
Reference Applies to subparts F, G, and H Comment
--------------------------------------------------------------------------------------------------------------------------------------------------------
63.1(a)(1)..................................................... Yes................................. Overlap clarified in Sec. 63.101, Sec. 63.111,
Sec. 63.161.
63.1(a)(2)..................................................... Yes.................................
63.1(a)(3)..................................................... Yes................................. Sec. 63.110 and Sec. 63.160(b) of subparts G
and H identify which standards are overridden.
63.1(a)(4)..................................................... No.................................. Subpart F specifies applicability of each
paragraph in subpart A to subparts F, G, and H.
63.1 (a)(5)--(a)(9)............................................ No..................................
63.1(a)(10).................................................... No.................................. Subparts F, G, and H specify calendar or
operating day.
63.1(a)(11).................................................... No.................................. Subpart F Sec. 63.103(d) specifies acceptable
methods for submitting reports.a
63.1 (a)(12)--(a)(14).......................................... Yes.................................
63.1(b)(1)..................................................... No.................................. Subpart F specifies applicability.
63.1(b)(2)..................................................... Yes.................................
63.1(b)(3)..................................................... No..................................
63.1(c)(1)..................................................... No.................................. Subpart F specifies applicability.
63.1(c)(2)..................................................... No.................................. Area sources are not subject to subparts F, G,
and H.
63.1(c)(3)..................................................... No..................................
63.1(c)(4)..................................................... Yes.................................
63.1(c)(5)..................................................... No.................................. Subparts G and H specify applicable notification
requirements.
63.1(d)........................................................ No..................................
63.1(e)........................................................ No.................................. Subparts F, G, and H established before permit
program.
63.2........................................................... Yes................................. Subpart F Sec. 63.101(a) specifies those subpart
A definitions that apply to the HON. Subpart F
definition of ``source'' is equivalent to
subpart A definition of ``affected source.''
63.3........................................................... No.................................. Units of measure are spelled out in subparts F,
G, and H.
63.4 (a)(1)--(a)(3)............................................ Yes.................................
63.4(a)(4)..................................................... No.................................. This is a reserved paragraph in subpart A of part
63.
63.4(a)(5)..................................................... Yes.................................
63.4(b)........................................................ Yes.................................
63.4(c)........................................................ Yes.................................
63.5(a)(1)..................................................... Yes................................. Except the terms ``source'' and ``stationary
source'' in Sec. 63.5(a)(1) should be
interpreted as having the same meaning as
``affected source.''
[[Page 2738]]
63.5(a)(2)..................................................... Yes.................................
63.5(b)(1)..................................................... Yes................................. Except Sec. 63.100(l) defines when construction
or reconstruction is subject to standards for
new sources.
63.5(b)(2)..................................................... No.................................. This is a reserved paragraph in subpart A of part
63.
63.5(b)(3)..................................................... Yes.................................
63.5(b)(4)..................................................... Yes................................. Except the cross reference to Sec. 63.9(b) is
limited to Sec. 63.9(b) (4) and (5). Subpart F
overrides Sec. 63.9 (b)(1) through (b)(3).
63.5(b)(5)..................................................... Yes.................................
63.5(b)(6)..................................................... Yes................................. Except Sec. 63.100(l) defines when construction
or reconstruction is subject to standards for
new sources.
63.5(c)........................................................ No.................................. This is a reserved paragraph in subpart A of part
63.
63.5(d)(1)(i).................................................. No.................................. For subpart G, see Sec. 63.151(b) (2)(ii) and
(2)(iii) for the applicability and timing of
this submittal; for subpart H, see Sec.
63.182(b) (2)(ii) and (b)(2)(iii) for
applicability and timing of this submittal.
63.5(d)(1)(ii)................................................. Yes................................. Except Sec. 63.5(d)(1)(ii)(H) does not apply.
63.5(d)(1)(iii)................................................ No.................................. Subpart G requires submittal of the Notification
of Compliance Status in Sec. 63.152(b); subpart
H specifies requirements in Sec. 63.182(c).
63.5(d)(2)..................................................... No..................................
63.5(d)(3)..................................................... Yes--subpart G No--subpart H........ Except Sec. 63.5(d)(3)(ii) does not apply to
subpart G.
63.5(d)(4)..................................................... Yes.................................
63.5(e)........................................................ Yes.................................
63.5(f)(1)..................................................... Yes.................................
63.5(f)(2)..................................................... Yes................................. Except the cross-reference to Sec. 63.5(d)(1) is
changed to Sec. 63.151(b)(2)(ii) of subpart G
and to Sec. 63.182(b)(2)(ii) of subpart H. The
cross-reference to Sec. 63.5(b)(2) does not
apply.
63.6(a)........................................................ Yes.................................
63.6(b)(1)..................................................... No.................................. Subparts F and H specify compliance dates for
sources subject to subparts F, G, and H.
63.6(b)(2)..................................................... No..................................
63.6(b)(3)..................................................... Yes.................................
63.6(b)(4)..................................................... No.................................. May apply when standards are proposed under
Section 112(f) of the Clean Air Act.
63.6(b)(5)..................................................... No.................................. Subparts G and H include notification
requirements.
63.6(b)(6)..................................................... No..................................
63.6(b)(7)..................................................... No..................................
63.6(c)(1)..................................................... No.................................. Subpart F specifies the compliance dates for
subparts G and H.
63.6(c)(2)..................................................... No..................................
63.6(c)(3)..................................................... No..................................
63.6(c)(4)..................................................... No..................................
63.6(c)(5)..................................................... Yes.................................
63.6(d)........................................................ No..................................
63.6(e)........................................................ Yes................................. Except as otherwise specified for individual
paragraphs. Does not apply to Group 2 emission
points unless they are included in an emissions
average.b
63.6(e)(1)(i).................................................. No.................................. This is addressed by Sec. 63.102(a)(4) of
subpart F.
63.6(e)(1)(ii)................................................. Yes.................................
63.6(e)(1)(iii)................................................ Yes.................................
63.6(e)(2)..................................................... Yes.................................
63.6(e)(3)(i).................................................. Yes................................. For subpart H, the startup, shutdown, and
malfunction plan requirement of Sec.
63.6(e)(3)(i) is limited to control devices
subject to the provisions of subpart H and is
optional for other equipment subject to subpart
H. The startup, shutdown, and malfunction plan
may include written procedures that identify
conditions that justify a delay of repair.
63.6(e)(3)(i)(A)............................................... No.................................. This is addressed by Sec. 63.102(a)(4).
63.6(e)(3)(i)(B)............................................... Yes.................................
63.6(e)(3)(i)(C)............................................... Yes.................................
63.6(e)(3)(ii)................................................. Yes.................................
63.6(e)(3)(iii)................................................ No.................................. Recordkeeping and reporting are specified in Sec.
63.103(c)(2) of subpart F and Sec.
63.152(d)(1) of subpart G.
63.6(e)(3)(iv)................................................. No.................................. Recordkeeping and reporting are specified in Sec.
63.103(c)(2) of subpart F and Sec.
63.152(d)(1) of subpart G.
63.6(e)(3)(v).................................................. No.................................. Records retention requirements are specified in
Sec. 63.103(c).
63.6(e)(3)(vi)................................................. Yes.................................
63.6(e)(3)(vii)................................................ Yes.................................
63.6(e)(3)(vii)(A)............................................. Yes.................................
63.6(e)(3)(vii)(B)............................................. Yes................................. Except the plan must provide for operation in
compliance with Sec. 63.102(a)(4).
63.6(e)(3)(vii)(C)............................................. Yes.................................
63.6(e)(3)(viii)............................................... Yes.................................
63.6(f)(1)..................................................... No.................................. Sec. 63.102(a) of subpart F specifies when the
standards apply.
[[Page 2739]]
63.6(f)(2)(i).................................................. Yes.................................
63.6(f)(2)(ii)................................................. Yes--subpart G No--subpart H........ Sec. 63.152(c)(2) of subpart G specifies the use
of monitoring data in determining compliance
with subpart G.
63.6(f)(2)(iii) (A), (B), and (C).............................. Yes.................................
63.6(f)(2)(iii)(D)............................................. No..................................
63.6(f)(2)(iv)................................................. Yes.................................
63.6(f)(2)(v).................................................. Yes.................................
63.6(f)(3)..................................................... Yes.................................
63.6(g)........................................................ No.................................. Procedures specified in Sec. 63.102(b) of
subpart F.
63.6(h)........................................................ No..................................
63.6(i)(1)..................................................... Yes.................................
63.6(i)(2)..................................................... Yes.................................
63.6(i)(3)..................................................... No.................................. For subpart G, Sec. 63.151(a)(6) specifies
procedures; for subpart H, Sec. 63.182(a)(6)
specifies procedures.
63.6(i)(4)(i)(A)............................................... Yes.................................
63.6(i)(4)(i)(B)............................................... No.................................. Dates are specified in Sec. 63.151(a)(6)(i) of
subpart G and Sec. 63.182(a)(6)(i) of subpart
H.
63.6(i)(4)(ii)................................................. No..................................
63.6(i) (5)--(14).............................................. Yes.................................
63.6(i)(15).................................................... No..................................
63.6(i)(16).................................................... Yes.................................
63.6(j)........................................................ Yes.................................
63.7(a)(1)..................................................... No.................................. Subparts F, G, and H specify required testing and
compliance demonstration procedures.
63.7(a)(2)..................................................... No.................................. For subpart G, test results must be submitted in
the Notification of Compliance Status due 150
days after compliance date, as specified in Sec.
63.152(b); for subpart H, all test results
subject to reporting are reported in periodic
reports.
63.7(a)(3)..................................................... Yes.................................
63.7(b)........................................................ No..................................
63.7(c)........................................................ No..................................
63.7(d)........................................................ Yes.................................
63.7(e)(1)..................................................... Yes.................................
63.7(e)(2)..................................................... Yes.................................
63.7(e)(3)..................................................... No.................................. Subparts F, G, and H specify test methods and
procedures.
63.7(e)(4)..................................................... Yes.................................
63.7(f)........................................................ No.................................. Subparts F, G, and H specify applicable methods
and provide alternatives.
63.7(g)........................................................ No.................................. Performance test reporting specified in Sec.
63.152(b) of subpart G: Not applicable to
subpart H because no performance test required
by subpart H.
63.7(h)(1)..................................................... Yes.................................
63.7(h)(2)..................................................... Yes.................................
63.7(h)(3)..................................................... No.................................. Sec. 63.103(b)(5) of subpart F specifies
provisions for requests to waive performance
tests.
63.7(h)(4)..................................................... No..................................
63.7(h)(5)..................................................... Yes.................................
63.8(a)(1)..................................................... Yes.................................
63.8(a)(2)..................................................... No..................................
63.8(a)(3)..................................................... No..................................
63.8(a)(4)..................................................... Yes.................................
63.8(b)(1)..................................................... Yes.................................
63.8(b)(2)..................................................... No.................................. Subparts G and H specify locations to conduct
monitoring.
63.8(b)(3)..................................................... Yes.................................
63.8(c)(1)(i).................................................. Yes.................................
63.8(c)(1)(ii)................................................. No.................................. For subpart G, submit as part of periodic report
required by Sec. 63.152(c); for subpart H,
retain as required by Sec. 63.181(g)(2)(ii).
63.8(c)(1)(iii)................................................ Yes.................................
63.8(c)(2)..................................................... Yes.................................
63.8(c)(3)..................................................... Yes.................................
63.8(c)(4)..................................................... No.................................. Subpart G specifies monitoring frequency by kind
of emission point and control technology used
(e.g., Sec. 63.111, Sec. 63.120(d)(2), Sec.
63.143, and Sec. 63.152(f)); subpart H does not
require use of continuous monitoring systems.
63.8 (c)(5)-(c)(8)............................................. No..................................
63.8(d)........................................................ No..................................
63.8(e)........................................................ No..................................
63.8 (f)(1)-(f)(3)............................................. Yes.................................
63.8(f)(4)(i).................................................. No.................................. Timeframe for submitting request specified in
Sec. 63.151(f) or (g) of subpart G; not
applicable to subpart H because subpart H
specifies acceptable alternative methods.
[[Page 2740]]
63.8(f)(4)(ii)................................................. Yes.................................
63.8(f)(4)(iii)................................................ No..................................
63.8(f)(5)(i).................................................. Yes.................................
63.8(f)(5)(ii)................................................. No..................................
63.8(f)(5)(iii)................................................ Yes.................................
63.8(f)(6)..................................................... No.................................. Subparts G and H do not require continuous
emission monitoring.
63.8(g)........................................................ No.................................. Data reduction procedures specified in Sec.
63.152(f) and (g) of subpart G; not applicable
to subpart H.
63.9(a)........................................................ Yes.................................
63.9(b)(1)..................................................... No.................................. Specified in Sec. 63.151(b)(2) of subpart G;
specified in Sec. 63.182(b) of subpart H.
63.9(b)(2)..................................................... No.................................. Initial Notification provisions are specified in
Sec. 63.151(b) of subpart G; in Sec. 63.182(b)
of subpart H.
63.9(b)(3)..................................................... No..................................
63.9(b)(4)..................................................... Yes................................. Except that the notification in Sec.
63.9(b)(4)(i) shall be submitted at the time
specified in Sec. 63.151(b)(2)(ii) of subpart
G; in Sec. 63.182(b)(2) of subpart H.
63.9(b)(5)..................................................... Yes................................. Except that the notification in Sec. 63.9(b)(5)
shall be submitted at the time specified in Sec.
63.151(b)(2)(ii) of subpart G; in Sec. 63.182
(b)(2) of subpart H.
63.9(c)........................................................ Yes.................................
63.9(d)........................................................ Yes.................................
63.9(e)........................................................ No..................................
63.9(f)........................................................ No..................................
63.9(g)........................................................ No..................................
63.9(h)........................................................ No.................................. Sec. 63.152(b) of subpart G and Sec. 63.182 (c)
of subpart H specify Notification of Compliance
Status requirements.
63.9(i)........................................................ Yes.................................
63.9(j)........................................................ No..................................
63.10(a)....................................................... Yes.................................
63.10(b)(1).................................................... No.................................. Sec. 63.103(c) of subpart F specifies record
retention requirements.
63.10(b)(2).................................................... No.................................. Sec. 63.103(c) of subpart F specifies required
records.
63.10(b)(3).................................................... No..................................
63.10(c)....................................................... No..................................
63.10(d)(1).................................................... No..................................
63.10(d)(2).................................................... No.................................. Sec. 63.152(b) of subpart G specifies
performance test reporting; not applicable to
subpart H.
63.10(d)(3).................................................... No..................................
63.10(d)(4).................................................... Yes.................................
63.10(d)(5).................................................... Yes................................. Except that reports required by Sec. 63.10(d)(5)
shall be submitted at the time specified in Sec.
63.152(d) of subpart G and in Sec. 63.182(d)
of subpart H.
63.10(e)....................................................... No..................................
63.10(f)....................................................... Yes.................................
63.11-63.15.................................................... Yes ................................
--------------------------------------------------------------------------------------------------------------------------------------------------------
a Wherever subpart A specifies ``postmark'' dates, submittals may be sent by methods other than the U.S. Mail (e.g., by fax or courier). Submittals
shall be sent by the specified dates, but a postmark is not necessarily required.
b The plan, and any records or reports of start-up, shutdown, and malfunction do not apply to Group 2 emission points unless they are included in an
emissions average.
Table 4. to Subpart F.--Organic Hazardous Air Pollutants Subject to
Cooling Tower Monitoring Requirements in Sec. 63.104
------------------------------------------------------------------------
CAS Number
Chemical name a
------------------------------------------------------------------------
Acetaldehyde............................................... 75070
Acetonitrile............................................... 75058
Acetophenone............................................... 98862
Acrolein................................................... 107028
Acrylonitrile.............................................. 107131
Allyl chloride............................................. 107051
Aniline.................................................... 62533
Anisidine (o-)............................................. 90040
Benzene.................................................... 71432
Benzyl chloride............................................ 100447
Biphenyl................................................... 92524
Bromoform.................................................. 75252
Butadiene (1,3-)........................................... 106990
Carbon disulfide........................................... 75150
[[Page 2741]]
Carbon tetrachloride....................................... 56235
Chloroacetophenone (2-).................................... 532274
Chlorobenzene.............................................. 108907
2-Chloro-1,3-butadiene (Chloroprene)....................... 126998
Chloroform................................................. 67663
Cresol and cresylic acid (o-).............................. 95487
Cresol and cresylic acid (m-).............................. 108394
Cresol and cresylic acid (p-).............................. 106445
Cumene..................................................... 98828
Dichlorobenzene (p-)....................................... 106467
Dichlorobenzidine (3,3'-).................................. 91941
Dichloroethane (1,2-) (Ethylene dichloride) (EDC).......... 107062
Dichloroethyl ether (Bis(2-chloroethyl)ether).............. 111444
Dichloropropene (1,3-)..................................... 542756
Diethylene glycol diethyl ether............................ 112367
Diethylene glycol dimethyl ether........................... 111966
Diethyl sulfate............................................ 64675
Dimethylaniline (N,N-)..................................... 121697
Dimethylhydrazine (1,1-)................................... 57147
Dimethyl phthalate......................................... 131113
Dimethyl sulfate........................................... 77781
Dinitrophenol (2,4-)....................................... 51285
Dinitrotoluene (2,4-)...................................... 121142
Dioxane (1,4-) (1,4-Diethyleneoxide)....................... 123911
Epichlorohydrin (1-Chloro-2,3-epoxypropane)................ 106898
Ethyl acrylate............................................. 140885
Ethylbenzene............................................... 100414
Ethyl chloride (Chloroethane).............................. 75003
Ethylene dibromide (Dibromoethane)......................... 106934
Ethylene glycol dimethyl ether............................. 110714
Ethylene glycol monobutyl ether............................ 111762
Ethylene glycol monobutyl ether acetate.................... 112072
Ethylene glycol monoethyl ether acetate.................... 111159
Ethylene glycol monoethyl ether............................ 110805
Ethylene glycol monomethyl ether........................... 109864
Ethylene glycol monomethyl ether acetate................... 110496
Ethylene glycol monopropyl ether........................... 2807309
Ethylene oxide............................................. 75218
Ethylidene dichloride (1,1-Dichloroethane)................. 75343
Formaldehyde............................................... 50000
Hexachlorobenzene.......................................... 118741
Hexachlorobutadiene........................................ 87683
Hexachloroethane........................................... 67721
Hexane..................................................... 110543
Isophorone................................................. 78591
Methanol................................................... 67561
Methyl bromide (Bromomethane).............................. 74839
Methyl chloride (Chloromethane)............................ 74873
Methyl ethyl ketone (2-Butanone)........................... 78933
Methyl hydrazine........................................... 60344
Methyl isobutyl ketone (Hexone)............................ 108101
Methyl methacrylate........................................ 80626
Methyl tert-butyl ether.................................... 1634044
Methylene chloride (Dichloromethane)....................... 75092
Methylenedianiline (4,4'-)................................. 101779
Naphthalene................................................ 91203
Nitrobenzene............................................... 98953
Nitropropane (2-).......................................... 79469
Phenol..................................................... 108952
Phenylenediamine (p-)...................................... 106503
Phosgene................................................... 75445
Propionaldehyde............................................ 123386
Propylene dichloride (1,2-Dichloropropane)................. 78875
Propylene oxide............................................ 75569
Quinone.................................................... 106514
Styrene.................................................... 100425
Tetrachloroethane (1,1,2,2-)............................... 79345
Tetrachloroethylene (Perchloroethylene).................... 127184
Toluene.................................................... 108883
Toluidine (o-)............................................. 95534
[[Page 2742]]
Trichlorobenzene (1,2,4-).................................. 120821
Trichloroethane (1,1,1-) (Methyl chloroform)............... 71556
Trichloroethane (1,1,2-) (Vinyl trichloride)............... 79005
Trichloroethylene.......................................... 79016
Trichlorophenol (2,4,5-)................................... 95954
Triethylamine.............................................. 121448
Trimethylpentane (2,2,4-).................................. 540841
Vinyl acetate.............................................. 108054
Vinyl chloride (chloroethylene)............................ 75014
Vinylidene chloride (1,1-Dichloroethylene)................. 75354
Xylene (m-)................................................ 108383
Xylene (o-)................................................ 95476
Xylene (p-)................................................ 106423
------------------------------------------------------------------------
a CAS Number=Chemical Abstract Service number.
Subpart G--National Emission Standards for Organic Hazardous Air
Pollutants From the Synthetic Organic Chemical Manufacturing
Industry for Process Vents, Storage Vessels, Transfer Operations,
and Wastewater
8. Section 63.110 is amended by adding paragraphs (d)(10) and (h)
and by revising paragraph (e)(1) to read as follows:
Sec. 63.110 Applicability.
* * * * *
(d) * * *
(10) As an alternative to the requirements of paragraphs (d)(2),
(d)(3), (d)(5), (d)(6), (d)(8), and/or (d)(9) of this section as
applicable, if a chemical manufacturing process unit has equipment
subject to the provisions of this subpart and equipment subject to the
provisions of 40 CFR part 60, subpart III, NNN, or RRR, the owner or
operator may elect to apply this subpart to all such equipment in the
chemical manufacturing process unit. If the owner or operator elects
this method of compliance, all total organic compounds minus methane
and ethane, in such equipment shall be considered for purposes of
applicability and compliance with this subpart, as if they were organic
hazardous air pollutants. Compliance with the provisions of this
subpart, in the manner described in this paragraph, shall be deemed to
constitute compliance with 40 CFR part 60, subpart III, NNN, or RRR, as
applicable.
(e) * * *
(1) After the compliance dates specified in Sec. 63.100 of subpart
F of this part, the owner or operator of a Group 1 or Group 2
wastewater stream that is also subject to the provisions of 40 CFR part
61, subpart FF is required to comply with the provisions of both this
subpart and 40 CFR part 61, subpart FF. Alternatively, the owner or
operator may elect to comply with the provisions of paragraphs
(e)(1)(i) and (e)(1)(ii) of this section, which shall constitute
compliance with the provisions of 40 CFR part 61, subpart FF.
(i) Comply with the provisions of this subpart; and
(ii) For any Group 2 wastewater stream or organic stream whose
benzene emissions are subject to control through the use of one or more
treatment processes or waste management units under the provisions of
40 CFR part 61, subpart FF on or after December 31, 1992, comply with
the requirements of this subpart for Group 1 wastewater streams.
* * * * *
(h) Overlap with other regulations for monitoring, recordkeeping,
or reporting with respect to combustion devices, recovery devices, or
recapture devices. After the compliance dates specified in Sec. 63.100
of subpart F of this part, if any combustion device, recovery device,
or recapture device subject to this subpart is also subject to
monitoring, recordkeeping, and reporting requirements in 40 CFR part
264, subpart AA or CC, or is subject to monitoring and recordkeeping
requirements in 40 CFR part 265, subpart AA or CC and the owner or
operator complies with the periodic reporting requirements under 40 CFR
part 264, subpart AA or CC that would apply to the device if the
facility had final-permitted status, the owner or operator may elect to
comply either with the monitoring, recordkeeping, and reporting
requirements of this subpart, or with the monitoring, recordkeeping,
and reporting requirements in 40 CFR parts 264 and/or 265, as described
in this paragraph, which shall constitute compliance with the
monitoring, recordkeeping, and reporting requirements of this subpart.
The owner or operator shall identify which option has been selected in
the Notification of Compliance Status required by Sec. 63.152(b).
9. Section 63.111 is amended by redesignating ``average
concentration'' as ``annual average concentration'' and ``average flow
rate'' as ``annual average flow rate''; revising the definition for
``boiler''; adding the definition for ``chemical manufacturing process
unit''; adding the definition for ``closed biological treatment
process''; revising the definitions for ``closed vent system,''
``combustion device,'' ``continuous record,'' ``continuous seal,''
``control device,'' and ``cover''; adding the definition for ``enhanced
biological treatment system or enhanced biological treatment process'';
revising the definitions for ``flame zone'' and ``flow indicator'';
adding the definitions for ``fuel gas'' and ``fuel gas system'';
revising the definitions for ``Group 1 wastewater stream,''
``individual drain system,'' and ``junction box''; removing the
definition for ``mass flow rate''; revising the definition for
``metallic shoe seal or mechanical shoe seal''; adding the definition
for ``open biological treatment process''; removing the definition for
``point of generation''; adding the definition for ``point of
determination''; revising the definition for ``process unit,'' adding
the definition for ``recapture device''; revising the definitions for
``recovery device,'' ``reference control technology for process
vents,'' ``reference control technology for transfer racks,''
``reference control technology for wastewater'' and ``residual'';
revising the definition for ``specific gravity monitoring device'';
adding the definitions for ``Table 8 compound'' and ``Table 9
compound''; revising the definition for ``temperature monitoring
[[Page 2743]]
device''; removing the definitions for ``total volatile organic
hazardous air pollutant concentration,'' ``volatile organic
concentration or VO concentration,'' and ``volatile organic hazardous
air pollutant concentration or VOHAP concentration''; and revising the
definition of ``waste management unit'' to read as follows:
Sec. 63.111 Definitions.
* * * * *
Annual average concentration * * *
Annual average flow rate * * *
Boiler means any enclosed combustion device that extracts useful
energy in the form of steam and is not an incinerator. Boiler also
means any industrial furnace as defined in 40 CFR 260.10.
* * * * *
Chemical manufacturing process unit means the equipment assembled
and connected by pipes or ducts to process raw materials and to
manufacture an intended product. A chemical manufacturing process unit
consists of more than one unit operation. For the purpose of this
subpart, chemical manufacturing process unit includes air oxidation
reactors and their associated product separators and recovery devices;
reactors and their associated product separators and recovery devices;
distillation units and their associated distillate receivers and
recovery devices; associated unit operations; associated recovery
devices; and any feed, intermediate and product storage vessels,
product transfer racks, and connected ducts and piping. A chemical
manufacturing process unit includes pumps, compressors, agitators,
pressure relief devices, sampling connection systems, open-ended valves
or lines, valves, connectors, instrumentation systems, and control
devices or systems. A chemical manufacturing process unit is identified
by its primary product.
Closed biological treatment process means a tank or surface
impoundment where biological treatment occurs and air emissions from
the treatment process are routed to either a control device by means of
a closed vent system or to a fuel gas system by means of hard-piping.
The tank or surface impoundment has a fixed roof, as defined in
Sec. 63.111 of this subpart, or a floating flexible membrane cover that
meets the requirements specified in Sec. 63.134 of this subpart.
Closed-vent system means a system that is not open to the
atmosphere and is composed of piping, ductwork, connections, and, if
necessary, flow inducing devices that transport gas or vapor from an
emission point to a control device.
Combustion device means an individual unit of equipment, such as a
flare, incinerator, process heater, or boiler, used for the combustion
of organic hazardous air pollutant emissions.
* * * * *
Continuous record means documentation, either in hard copy or
computer readable form, of data values measured at least once every 15
minutes and recorded at the frequency specified in Sec. 63.152(f) or
Sec. 63.152(g) of this subpart.
* * * * *
Continuous seal means a seal that forms a continuous closure that
completely covers the space between the wall of the storage vessel and
the edge of the floating roof. A continuous seal may be a vapor-
mounted, liquid-mounted, or metallic shoe seal. A continuous seal may
be constructed of fastened segments so as to form a continuous seal.
* * * * *
Control device means any combustion device, recovery device, or
recapture device. Such equipment includes, but is not limited to,
absorbers, carbon adsorbers, condensers, incinerators, flares, boilers,
and process heaters. For process vents, recapture devices are
considered control devices but recovery devices are not considered
control devices, and for a steam stripper, a primary condenser is not
considered a control device.
Cover, as used in the wastewater provisions, means a device or
system which is placed on or over a waste management unit containing
wastewater or residuals so that the entire surface area is enclosed to
minimize air emissions. A cover may have openings necessary for
operation, inspection, and maintenance of the waste management unit
such as access hatches, sampling ports, and gauge wells provided that
each opening is closed when not in use. Examples of covers include a
fixed roof installed on a wastewater tank, a lid installed on a
container, and an air-supported enclosure installed over a waste
management unit.
* * * * *
Enhanced biological treatment system or enhanced biological
treatment process means an aerated treatment unit(s) that contains
biomass suspended in water followed by a clarifier that removes biomass
from the treated water and recycles recovered biomass to the aeration
unit. The mixed liquor volatile suspended solids (biomass) is greater
than 1 kilogram per cubic meter homogeneously distributed throughout
each aeration unit. The biomass is suspended and aerated in the water
of the aeration unit(s) by either submerged air flow or mechanical
agitation.
* * * * *
Flame zone means the portion of the combustion chamber in a boiler
or process heater occupied by the flame envelope.
* * * * *
Flow indicator means a device which indicates whether gas flow is,
or whether the valve position would allow gas flow to be, present in a
line.
Fuel gas means gases that are combusted to derive useful work or
heat.
Fuel gas system means the offsite and onsite piping and control
system that gathers gaseous stream(s) generated by onsite operations,
may blend them with other sources of gas, and transports the gaseous
stream for use as fuel gas in combustion devices, or in-process
combustion equipment such as furnaces and gas turbines, either singly
or in combination.
* * * * *
Group 1 wastewater stream means a wastewater stream consisting of
process wastewater as defined in Sec. 63.101 of subpart F at an
existing or new source that meets the criteria for Group 1 status in
Sec. 63.132(c) of this subpart for Table 9 compounds and/or a
wastewater stream consisting of process wastewater at a new source that
meets the criteria for Group 1 status in Sec. 63.132(d) of this subpart
for Table 8 compounds.
* * * * *
Individual drain system means the stationary system used to convey
wastewater streams or residuals to a waste management unit or to
discharge or disposal. The term includes hard-piping, all process
drains and junction boxes, together with their associated sewer lines
and other junction boxes, manholes, sumps, and lift stations, conveying
wastewater streams or residuals. A segregated stormwater sewer system,
which is a drain and collection system designed and operated for the
sole purpose of collecting rainfall runoff at a facility, and which is
segregated from all other individual drain systems, is excluded from
this definition.
* * * * *
Junction box means a manhole or access point to a wastewater sewer
line or a lift station.
* * * * *
Metallic shoe seal or mechanical shoe seal means metal sheets that
are held vertically against the wall of the storage
[[Page 2744]]
vessel by springs, weighted levers, or other mechanisms and connected
to the floating roof by braces or other means. A flexible coated fabric
(envelope) spans the annular space between the metal sheet and the
floating roof.
* * * * *
Open biological treatment process means a biological treatment
process that is not a closed biological treatment process as defined in
this section.
* * * * *
Point of determination means each point where process wastewater
exits the chemical manufacturing process unit.
Note to definition for point of determination: The regulation
allows determination of the characteristics of a wastewater stream
(1) at the point of determination or (2) downstream of the point of
determination if corrections are made for changes in flow rate and
annual average concentration of Table 8 or Table 9 compounds as
determined in Sec. 63.144 of this subpart. Such changes include
losses by air emissions; reduction of annual average concentration
or changes in flow rate by mixing with other water or wastewater
streams; and reduction in flow rate or annual average concentration
by treating or otherwise handling the wastewater stream to remove or
destroy hazardous air pollutants.
* * * * *
Process unit has the same meaning as chemical manufacturing process
unit as defined in this section.
* * * * *
Recapture device means an individual unit of equipment capable of
and used for the purpose of recovering chemicals, but not normally for
use, reuse, or sale. For example, a recapture device may recover
chemicals primarily for disposal. Recapture devices include, but are
not limited to, absorbers, carbon adsorbers, and condensers.
Recovery device means an individual unit of equipment capable of
and normally used for the purpose of recovering chemicals for fuel
value (i.e., net positive heating value), use, reuse or for sale for
fuel value, use, or reuse. Examples of equipment that may be recovery
devices include absorbers, carbon adsorbers, condensers, oil-water
separators or organic-water separators, or organic removal devices such
as decanters, strippers, or thin-film evaporation units. For purposes
of the monitoring, recordkeeping, and reporting requirements of this
subpart, recapture devices are considered recovery devices.
* * * * *
Reference control technology for process vents means a combustion
device or recapture device used to reduce organic hazardous air
pollutant emissions by 98 percent, or to an outlet concentration of 20
parts per million by volume.
* * * * *
Reference control technology for transfer racks means a combustion
device, recapture device, or recovery device used to reduce organic
hazardous air pollutants emissions by 98 percent, or to an outlet
concentration of 20 parts per million by volume; or a vapor balancing
system.
Reference control technology for wastewater means the use of:
(1) Controls specified in Sec. 63.133 through Sec. 63.137;
(2) A steam stripper meeting the specifications of Sec. 63.138(d)
of this subpart or any of the other alternative control measures
specified in Sec. 63.138(b), (c), (e), (f), (g), or (h) of this
subpart; and
(3) A control device to reduce by 95 percent (or to an outlet
concentration of 20 parts per million by volume for combustion devices
or for noncombustion devices controlling air emissions from waste
management units other than surface impoundments or containers) the
organic hazardous air pollutants emissions in the vapor streams vented
from wastewater tanks, oil-water separators, containers, surface
impoundments, individual drain systems, and treatment processes
(including the design steam stripper) managing wastewater.
Residual means any liquid or solid material containing Table 9
compounds that is removed from a wastewater stream by a waste
management unit or treatment process that does not destroy organics
(nondestructive unit). Examples of residuals from nondestructive
wastewater management units are: the organic layer and bottom residue
removed by a decanter or organic-water separator and the overheads from
a steam stripper or air stripper. Examples of materials which are not
residuals are: silt; mud; leaves; bottoms from a steam stripper or air
stripper; and sludges, ash, or other materials removed from wastewater
being treated by destructive devices such as biological treatment units
and incinerators.
* * * * *
Specific gravity monitoring device means a unit of equipment used
to monitor specific gravity and having a minimum accuracy of
0.02 specific gravity units.
* * * * *
Table 8 compound means a compound listed in table 8 of this
subpart.
Table 9 compound means a compound listed in table 9 of this
subpart.
Temperature monitoring device means a unit of equipment used to
monitor temperature and having a minimum accuracy of (a) 1
percent of the temperature being monitored expressed in degrees Celsius
( deg.C) or (b) 0.5 degrees ( deg.C), whichever is greater.
* * * * *
Waste management unit means the equipment, structure(s), and/or
device(s) used to convey, store, treat, or dispose of wastewater
streams or residuals. Examples of waste management units include:
Wastewater tanks, surface impoundments, individual drain systems, and
biological wastewater treatment units. Examples of equipment that may
be waste management units include containers, air flotation units, oil-
water separators or organic-water separators, or organic removal
devices such as decanters, strippers, or thin-film evaporation units.
If such equipment is used for recovery, then it is part of a chemical
manufacturing process unit and is not a waste management unit.
* * * * *
10. Section 63.112 is amended by revising the introductory text of
paragraph (e) and adding paragraphs (e)(3) and (h) to read as follows:
Sec. 63.112 Emission standard.
* * * * *
(e) The owner or operator of an existing or new source may comply
with the process vent provisions in Secs. 63.113 through 63.118 of this
subpart, the storage vessel provisions in Secs. 63.119 through 63.123
of this subpart, the transfer operation provisions in Secs. 63.126
through 63.130 of this subpart, the wastewater provisions in
Secs. 63.131 through 63.147 of this subpart, the leak inspection
provisions in Sec. 63.148, and the provisions in Sec. 63.149 of this
subpart.
* * * * *
(3) When emissions of different kinds (e.g., emissions from process
vents, transfer operations, storage vessels, process wastewater, and/or
in-process equipment subject to Sec. 63.149 of this subpart) are
combined, and at least one of the emission streams would be classified
as Group 1 in the absence of combination with other emission streams,
the owner or operator shall comply with the requirements of either
paragraph (e)(3)(i) or paragraph (e)(3)(ii) of this section.
(i) Comply with the applicable requirements of this subpart for
each kind of emissions in the stream (e.g., the
[[Page 2745]]
requirements in Secs. 63.113 through 63.118 of this subpart G for
process vents, and the requirements of Secs. 63.126 through 63.130 for
transfer operations); or
(ii) Comply with the first set of requirements identified in
paragraphs (e)(3)(ii)(A) through (e)(3)(ii)(E) of this section which
applies to any individual emission stream that is included in the
combined stream, where either that emission stream would be classified
as Group 1 in the absence of combination with other emission streams,
or the owner chooses to consider that emission stream to be Group 1 for
purposes of this paragraph. Compliance with the first applicable set of
requirements identified in paragraphs (e)(3)(ii)(A) through
(e)(3)(ii)(E) of this section constitutes compliance with all other
requirements in paragraphs (e)(3)(ii)(A) through (e)(3)(ii)(E) of this
section applicable to other types of emissions in the combined stream.
(A) The requirements of this subpart for Group 1 process vents,
including applicable monitoring, recordkeeping, and reporting;
(B) The requirements of this subpart for Group 1 transfer racks,
including applicable monitoring, recordkeeping, and reporting;
(C) The requirements of Sec. 63.119(e) for control of emissions
from Group 1 storage vessels, including monitoring, recordkeeping, and
reporting;
(D) The requirements of Sec. 63.139 for control devices used to
control emissions from waste management units, including applicable
monitoring, recordkeeping, and reporting; or
(E) The requirements of Sec. 63.139 for closed vent systems for
control of emissions from in-process equipment subject to Sec. 63.149,
including applicable monitoring, recordkeeping, and reporting.
* * * * *
(h) Where the provisions of this subpart require a performance
test, waiver of that requirement shall be addressed only as provided in
Sec. 63.103(b)(5) of subpart F of this part.
11. Section 63.113 is amended by revising the introductory text of
paragraph (a); revising paragraph (a)(2); revising the second sentence
in paragraph (a)(3); and revising paragraphs (c)(1) and (c)(2) to read
as follows:
Sec. 63.113 Process vent provisions.
(a) The owner or operator of a Group 1 process vent as defined in
this subpart shall comply with the requirements of paragraph (a)(1),
(a)(2), or (a)(3) of this section.
* * * * *
(2) Reduce emissions of total organic hazardous air pollutants by
98 weight-percent or to a concentration of 20 parts per million by
volume, whichever is less stringent. For combustion devices, the
emission reduction or concentration shall be calculated on a dry basis,
corrected to 3-percent oxygen, and compliance can be determined by
measuring either organic hazardous air pollutants or total organic
carbon using the procedures in Sec. 63.116 of this subpart.
(i) Compliance with paragraph (a)(2) of this section may be
achieved by using any combination of combustion, recovery, and/or
recapture devices, except that a recovery device may not be used to
comply with paragraph (a)(2) of this section by reducing emissions of
total organic hazardous air pollutants by 98 weight-percent, except as
provided in paragraph (a)(2)(ii) of this section.
(ii) An owner or operator may use a recovery device, alone or in
combination with one or more combustion or recapture devices, to reduce
emissions of total organic hazardous air pollutants by 98 weight-
percent if all the conditions of paragraphs (a)(2)(ii)(A) through
(a)(2)(ii)(D) of this section are met.
(A) The recovery device (and any combustion device or recapture
device which operates in combination with the recovery device to reduce
emissions of total organic hazardous air pollutants by 98 weight-
percent) was installed before the date of proposal of the subpart of
this part 63 that makes this subpart G applicable to process vents in
the chemical manufacturing process unit.
(B) The recovery device that will be used to reduce emissions of
total organic hazardous air pollutants by 98 weight-percent is the last
recovery device before emission to the atmosphere.
(C) The recovery device, alone or in combination with one or more
combustion or recapture devices, is capable of reducing emissions of
total organic hazardous air pollutants by 98 weight-percent, but is not
capable of reliably reducing emissions of total organic hazardous air
pollutants to a concentration of 20 parts per million by volume.
(D) If the owner or operator disposed of the recovered material,
the recovery device would comply with the requirements of this subpart
for recapture devices.
(3) * * * If the TRE index value is greater than 1.0, the vent
shall comply with the provisions for a Group 2 process vent specified
in either paragraph (d) or (e) of this section, whichever is
applicable.
* * * * *
(c) * * *
(1) If a combustion device is used to comply with paragraph (a)(2)
of this section for a halogenated vent stream, then the vent stream
exiting the combustion device shall be ducted to a halogen reduction
device, including but not limited to a scrubber, before it is
discharged to the atmosphere.
(i) Except as provided in paragraph (c)(1)(ii) of this section, the
halogen reduction device shall reduce overall emissions of hydrogen
halides and halogens, as defined in Sec. 63.111 of this subpart, by 99
percent or shall reduce the outlet mass of total hydrogen halides and
halogens to less than 0.45 kilogram per hour, whichever is less
stringent.
(ii) If a scrubber or other halogen reduction device was installed
prior to December 31, 1992, the device shall reduce overall emissions
of hydrogen halides and halogens, as defined in Sec. 63.111 of this
subpart, by 95 percent or shall reduce the outlet mass of total
hydrogen halides and halogens to less than 0.45 kilograms per hour,
whichever is less stringent.
(2) A halogen reduction device, such as a scrubber or other
technique, may be used to reduce the vent stream halogen atom mass
emission rate to less than 0.45 kilogram per hour prior to any
combustion control device, and thus make the vent stream
nonhalogenated; the vent stream must comply with the requirements of
paragraph (a)(1) or (a)(2) of this section.
* * * * *
12. Section 63.114 is amended by revising the introductory text of
paragraph (a); revising paragraph (a)(4)(ii); adding paragraph (a)(5);
revising the introductory text of paragraph (b); revising paragraphs
(b)(3), (c)(1), (c)(3), revising the first sentence of paragraph
(d)(1), and revising paragraph (d)(2); and adding a sentence to the end
of paragraph (e) to read as follows:
Sec. 63.114 Process vent provisions--monitoring requirements.
(a) Each owner or operator of a process vent that uses a combustion
device to comply with the requirements in Sec. 63.113 (a)(1) or (a)(2)
of this subpart, or that uses a recovery device or recapture device to
comply with the requirements in Sec. 63.113(a)(2) of this subpart,
shall install monitoring equipment specified in paragraph (a)(1),
(a)(2), (a)(3), (a)(4), or (a)(5) of this section, depending on the
type of device used. All monitoring equipment shall be installed,
calibrated, maintained, and
[[Page 2746]]
operated according to manufacturer's specifications or other written
procedures that provide adequate assurance that the equipment would
reasonably be expected to monitor accurately.
* * * * *
(4) * * *
(ii) A flow meter equipped with a continuous recorder shall be
located at the scrubber influent for liquid flow. Gas stream flow shall
be determined using one of the procedures specified in paragraphs
(a)(4)(ii)(A) through (a)(4)(ii)(C) of this section.
(A) The owner or operator may determine gas stream flow using the
design blower capacity, with appropriate adjustments for pressure drop.
(B) If the scrubber is subject to regulations in 40 CFR parts 264
through 266 that have required a determination of the liquid to gas (L/
G) ratio prior to the applicable compliance date for this subpart
specified in Sec. 63.100(k) of subpart F of this part, the owner or
operator may determine gas stream flow by the method that had been
utilized to comply with those regulations. A determination that was
conducted prior to the compliance date for this subpart may be utilized
to comply with this subpart if it is still representative.
(C) The owner or operator may prepare and implement a gas stream
flow determination plan that documents an appropriate method which will
be used to determine the gas stream flow. The plan shall require
determination of gas stream flow by a method which will at least
provide a value for either a representative or the highest gas stream
flow anticipated in the scrubber during representative operating
conditions other than start-ups, shutdowns, or malfunctions. The plan
shall include a description of the methodology to be followed and an
explanation of how the selected methodology will reliably determine the
gas stream flow, and a description of the records that will be
maintained to document the determination of gas stream flow. The owner
or operator shall maintain the plan as specified in Sec. 63.103(c).
(5) Where a recovery device or recapture device is used to comply
with the requirements of Sec. 63.113(a)(2) of this subpart, the owner
or operator shall utilize the appropriate monitoring device identified
in paragraph (b), (b)(1), (b)(2), or (b)(3) of this section.
(b) Each owner or operator of a process vent with a TRE index value
greater than 1.0 as specified under Sec. 63.113(a)(3) or Sec. 63.113(d)
of this subpart that uses one or more recovery devices shall install
either an organic monitoring device equipped with a continuous recorder
or the monitoring equipment specified in paragraph (b)(1), (b)(2), or
(b)(3) of this section, depending on the type of recovery device used.
All monitoring equipment shall be installed, calibrated, and maintained
according to the manufacturer's specifications or other written
procedures that provide adequate assurance that the equipment would
reasonably be expected to monitor accurately. Monitoring is not
required for process vents with TRE index values greater than 4.0 as
specified in Sec. 63.113(e) of this subpart.
* * * * *
(3) Where a carbon adsorber is the final recovery device in the
recovery system, an integrating regeneration stream flow monitoring
device having an accuracy of 10 percent or better, capable
of recording the total regeneration stream mass or volumetric flow for
each regeneration cycle; and a carbon bed temperature monitoring
device, capable of recording the carbon bed temperature after each
regeneration and within 15 minutes of completing any cooling cycle
shall be used.
(c) * * *
(1) Uses a combustion device other than an incinerator, boiler,
process heater, or flare; or
* * * * *
(3) Uses one of the combustion or recovery or recapture devices
listed in paragraphs (a) and (b) of this section, but seeks to monitor
a parameter other than those specified in paragraphs (a) and (b) of
this section.
(d) * * *
(1) Properly install, maintain, and operate a flow indicator that
takes a reading at least once every 15 minutes. * * *
(2) Secure the bypass line valve in the non-diverting position with
a car-seal or a lock-and-key type configuration. A visual inspection of
the seal or closure mechanism shall be performed at least once every
month to ensure that the valve is maintained in the non-diverting
position and the vent stream is not diverted through the bypass line.
(e) * * * The range may be based upon a prior performance test
conducted for determining compliance with a regulation promulgated by
the EPA, and the owner or operator is not required to conduct a
performance test under Sec. 63.116 of this subpart, if the prior
performance test was conducted using the same methods specified in
Sec. 63.116 and either no process changes have been made since the
test, or the owner or operator can demonstrate that the results of the
performance test, with or without adjustments, reliably demonstrate
compliance despite process changes.
13. Section 63.115 is amended by revising the introductory text of
paragraph (a) and the first sentence in the introductory text of
paragraph (e) to read as follows:
Sec. 63.115 Process vent provisions--methods and procedures for
process vent group determination.
(a) For purposes of determining process vent stream flow rate,
total organic hazardous air pollutants or total organic carbon
concentration or TRE index value, as specified under paragraph (b),
(c), or (d) of this section, the sampling site shall be after the last
recovery device (if any recovery devices are present) but prior to the
inlet of any control device that is present and prior to release to the
atmosphere.
* * * * *
(e) The owner or operator of a Group 2 process vent shall
recalculate the TRE index value, flow, or organic hazardous air
pollutants concentration for each process vent, as necessary to
determine whether the vent is Group 1 or Group 2, whenever process
changes are made that could reasonably be expected to change the vent
to a Group 1 vent.
* * * * *
14. Section 63.116 is amended by revising paragraph (a)(1); by
revising the introductory text of paragraph (b); revising paragraph
(b)(3); adding paragraph (b)(5); revising the introductory text of
paragraph (d); and revising paragraphs (d)(1), (d)(3), (d)(4), and (e)
to read as follows:
Sec. 63.116 Process vent provisions--performance test methods and
procedures to determine compliance.
(a) * * *
(1) The compliance determination shall be conducted using Method 22
of 40 CFR part 60, appendix A, to determine visible emissions.
* * * * *
(b) An owner or operator is not required to conduct a performance
test when any control device specified in paragraphs (b)(1) through
(b)(5) of this section is used.
* * * * *
(3) A control device for which a performance test was conducted for
determining compliance with a regulation promulgated by the EPA and the
test was conducted using the same methods specified in this section and
either no process changes have been made since the test, or the owner
or operator can demonstrate that the results of the performance test,
with or
[[Page 2747]]
without adjustments, reliably demonstrate compliance despite process
changes.
* * * * *
(5) A hazardous waste incinerator for which the owner or operator
has been issued a final permit under 40 CFR part 270 and complies with
the requirements of 40 CFR part 264, subpart O, or has certified
compliance with the interim status requirements of 40 CFR part 265,
subpart O.
* * * * *
(d) An owner or operator using a combustion device followed by a
scrubber or other halogen reduction device to control halogenated
process vent streams in compliance with Sec. 63.113(c)(1) shall conduct
a performance test to determine compliance with the control efficiency
or emission limits for hydrogen halides and halogens.
(1) For an owner or operator determining compliance with the
percent reduction of total hydrogen halides and halogens, sampling
sites shall be located at the inlet and outlet of the scrubber or other
halogen reduction device used to reduce halogen emissions. For an owner
or operator determining compliance with the less than 0.45 kilogram per
hour outlet emission limit for total hydrogen halides and halogens, the
sampling site shall be located at the outlet of the scrubber or other
halogen reduction device and prior to any releases to the atmosphere.
* * * * *
(3) To determine compliance with the percent removal efficiency,
the mass emissions for any hydrogen halides and halogens present at the
inlet of the scrubber or other halogen reduction device shall be summed
together. The mass emissions of the compounds present at the outlet of
the scrubber or other halogen reduction device shall be summed
together. Percent reduction shall be determined by comparison of the
summed inlet and outlet measurements.
(4) To demonstrate compliance with the less than 0.45 kilogram per
hour outlet emission limit, the test results must show that the mass
emission rate of total hydrogen halides and halogens measured at the
outlet of the scrubber or other halogen reduction device is below 0.45
kilogram per hour.
* * * * *
(e) An owner or operator using a scrubber or other halogen
reduction device to reduce the vent stream halogen atom mass emission
rate to less than 0.45 kilogram per hour prior to a combustion control
device in compliance with Sec. 63.113(c)(2) of this subpart shall
determine the halogen atom mass emission rate prior to the combustor
according to the procedures in Sec. 63.115(d)(2)(v) of this subpart.
15. Section 63.118 is amended by revising paragraph (a)(2);
revising the introductory text of paragraph (b); and revising paragraph
(b)(2) to read as follows:
Sec. 63.118 Process vents provisions--Periodic reporting and
recordkeeping requirements.
(a) * * *
(2) Records of the daily average value of each continuously
monitored parameter for each operating day determined according to the
procedures specified in Sec. 63.152(f). For flares, records of the
times and duration of all periods during which all pilot flames are
absent shall be kept rather than daily averages.
* * * * *
(b) Each owner or operator using a recovery device or other means
to achieve and maintain a TRE index value greater than 1.0 but less
than 4.0 as specified in Sec. 63.113(a)(3) or Sec. 63.113(d) of this
subpart shall keep the following records up-to-date and readily
accessible:
* * * * *
(2) Records of the daily average value of each continuously
monitored parameter for each operating day determined according to the
procedures specified in Sec. 63.152(f). If carbon adsorber regeneration
stream flow and carbon bed regeneration temperature are monitored, the
records specified in table 4 of this subpart shall be kept instead of
the daily averages.
* * * * *
16. Section 63.119 is amended by revising paragraphs (a)(1),
(a)(2), (b)(2), and (c)(4); and by adding new paragraphs (e)(6) and (f)
to read as follows:
Sec. 63.119 Storage vessel provisions--reference control technology.
(a) * * *
(1) For each Group 1 storage vessel (as defined in table 5 of this
subpart for existing sources and table 6 for new sources) storing a
liquid for which the maximum true vapor pressure of the total organic
hazardous air pollutants in the liquid is less than 76.6 kilopascals,
the owner or operator shall reduce hazardous air pollutants emissions
to the atmosphere either by operating and maintaining a fixed roof and
internal floating roof, an external floating roof, an external floating
roof converted to an internal floating roof, or a closed vent system
and control device, or routing the emissions to a process or a fuel gas
system in accordance with the requirements in paragraph (b), (c), (d),
(e), or (f) of this section, or equivalent as provided in Sec. 63.121
of this subpart.
(2) For each Group 1 storage vessel (as defined in table 5 of this
subpart for existing sources and table 6 of this subpart for new
sources) storing a liquid for which the maximum true vapor pressure of
the total organic hazardous air pollutants in the liquid is greater
than or equal to 76.6 kilopascals, the owner or operator shall operate
and maintain a closed vent system and control device meeting the
requirements specified in paragraph (e) of this section, or route the
emissions to a process or a fuel gas system as specified in paragraph
(f) of this section, or equivalent as provided in Sec. 63.121 of this
subpart.
* * * * *
(b) * * *
(2) When the floating roof is resting on the leg supports, the
process of filling, emptying, or refilling shall be continuous and
shall be accomplished as soon as practical.
* * * * *
(c) * * *
(4) When the floating roof is resting on the leg supports, the
process of filling, emptying, or refilling shall be continuous and
shall be accomplished as soon as practical.
* * * * *
(e) * * *
(6) An owner or operator may use a combination of control devices
to achieve the required reduction of total organic hazardous air
pollutants specified in paragraph (e)(1) of this section. An owner or
operator may use a combination of control devices installed on a
storage vessel on or before December 31, 1992 to achieve the required
reduction of total organic hazardous air pollutants specified in
paragraph (e)(2) of this section.
(f) The owner or operator who elects to route emissions to a fuel
gas system or to a process, as defined in Sec. 63.111 of this subpart,
to comply with the requirements of paragraph (a)(1) or (a)(2) of this
section shall comply with the requirements in paragraphs (f)(1) through
(f)(3) of this section, as applicable.
(1) If emissions are routed to a fuel gas system, there is no
requirement to conduct a performance test or design evaluation. If
emissions are routed to a process, the organic hazardous air pollutants
in the emissions shall predominantly meet one of, or a combination of,
the ends specified in paragraphs (f)(1)(i) through (f)(1)(iv) of
[[Page 2748]]
this section. The owner or operator shall comply with the compliance
demonstration requirements in Sec. 63.120(f).
(i) Recycled and/or consumed in the same manner as a material that
fulfills the same function in that process;
(ii) Transformed by chemical reaction into materials that are not
organic hazardous air pollutants;
(iii) Incorporated into a product; and/or
(iv) Recovered.
(2) If the emissions are conveyed by a system other than hard-
piping, any conveyance system operated under positive pressure shall be
subject to the requirements of Sec. 63.148 of this subpart.
(3) The fuel gas system or process shall be operating at all times
when organic hazardous air pollutants emissions are routed to it except
as provided in Sec. 63.102(a)(1) of subpart F of this part and in
paragraphs (f)(3)(i) through (f)(3)(iii) of this section. Whenever the
owner or operator by-passes the fuel gas system or process, the owner
or operator shall comply with the recordkeeping requirement in
Sec. 63.123(h) of this subpart. Bypassing is permitted if the owner or
operator complies with one or more of the conditions specified in
paragraphs (f)(3)(i) through (f)(3)(iii) of this section.
(i) The liquid level in the storage vessel is not increased;
(ii) The emissions are routed through a closed-vent system to a
control device complying with Sec. 63.119(e) of this subpart; or
(iii) The total aggregate amount of time during which the emissions
by-pass the fuel gas system or process during the calendar year without
being routed to a control device, for all reasons (except start-ups/
shutdowns/malfunctions or product changeovers of flexible operation
units and periods when the storage vessel has been emptied and
degassed), does not exceed 240 hours.
17. Section 63.120 is amended by revising the last sentence of
paragraph (a)(4); revising the first sentence of paragraph (b)(2)(ii);
revising the last sentence of paragraphs (b)(7)(ii) and (b)(8);
revising the introductory text of paragraph (d); and adding paragraphs
(d)(8) and (f) to read as follows:
Sec. 63.120 Storage vessel provisions--procedures to determine
compliance.
(a) * * *
(4) * * * Documentation of a decision to utilize an extension shall
include a description of the failure, shall document that alternate
storage capacity is unavailable, and shall specify a schedule of
actions that will ensure that the control equipment will be repaired or
the vessel will be emptied as soon as practical.
* * * * *
(b) * * *
(2) * * *
(ii) Seal gaps, if any, shall be measured around the entire
circumference of the vessel in each place where an 0.32 centimeter (\1/
8\ inch) diameter uniform probe passes freely (without forcing or
binding against the seal) between the seal and the wall of the storage
vessel. * * *
* * * * *
(7) * * *
(ii) * * * Documentation of a decision to utilize an extension
shall include an explanation of why it was unsafe to perform the
inspection or seal gap measurement, shall document that alternate
storage capacity is unavailable, and shall specify a schedule of
actions that will ensure that the vessel will be emptied as soon as
practical.
(8) * * * Documentation of a decision to utilize an extension shall
include a description of the failure, shall document that alternate
storage capacity is unavailable, and shall specify a schedule of
actions that will ensure that the control equipment will be repaired or
the vessel will be emptied as soon as practical.
* * * * *
(d) To demonstrate compliance with Sec. 63.119(e) of this subpart
(storage vessel equipped with a closed vent system and control device)
using a control device other than a flare, the owner or operator shall
comply with the requirements in paragraphs (d)(1) through (d)(7) of
this section, except as provided in paragraph (d)(8) of this section.
* * * * *
(8) A design evaluation or performance test is not required, if the
owner or operator uses a combustion device meeting the criteria in
paragraph (d)(8)(i), (d)(8)(ii), (d)(8)(iii), or (d)(8)(iv) of this
section.
(i) A boiler or process heater with a design heat input capacity of
44 megawatts or greater.
(ii) A boiler or process heater burning hazardous waste for which
the owner or operator:
(A) Has been issued a final permit under 40 CFR part 270 and
complies with the requirements of 40 CFR part 266, subpart H, or
(B) Has certified compliance with the interim status requirements
of 40 CFR part 266, subpart H.
(iii) A hazardous waste incinerator for which the owner or operator
has been issued a final permit under 40 CFR part 270 and complies with
the requirements of 40 CFR part 264, subpart O or has certified
compliance with the interim status requirements of 40 CFR part 265,
subpart O.
(iv) A boiler or process heater into which the vent stream is
introduced with the primary fuel.
* * * * *
(f) To demonstrate compliance with Sec. 63.119(f) of this subpart
(storage vessel routed to a process), the owner or operator shall
prepare a design evaluation (or engineering assessment) that
demonstrates the extent to which one or more of the ends specified in
Sec. 63.119(f)(1)(i) through (f)(1)(iv) are being met. The owner or
operator shall submit the design evaluation as part of the Notification
of Compliance Status required by Sec. 63.152(b) of this subpart.
18. Section 63.122 is amended by adding a sentence to the end of
the introductory text of paragraph (c); and adding paragraph (c)(3) to
read as follows:
Sec. 63.122 Storage vessel provisions--reporting.
* * * * *
(c) * * * An owner or operator who elects to comply with
Sec. 63.119(f) of this subpart by routing emissions to a process or to
a fuel gas system shall submit, as part of the Notification of
Compliance Status required by Sec. 63.152(b) of this subpart, the
information specified in paragraph (c)(3) of this section.
* * * * *
(3) If emissions are routed to a process, the owner or operator
shall submit the information specified in Sec. 63.120(f). If emissions
are routed to a fuel gas system, the owner or operator shall submit a
statement that the emission stream is connected to the fuel gas system
and whether the conveyance system is subject to the requirements of
Sec. 63.148.
* * * * *
19. Section 63.123 is amended by adding paragraph (h) to read as
follows:
Sec. 63.123 Storage vessel provisions--recordkeeping.
* * * * *
(h) An owner or operator who uses the by-pass provisions of
Sec. 63.119(f)(3) of this subpart shall keep in a readily accessible
location the records specified in paragraphs (h)(1) through (h)(3) of
this section.
(1) The reason it was necessary to by-pass the process equipment or
fuel gas system;
(2) The duration of the period when the process equipment or fuel
gas system was by-passed;
[[Page 2749]]
(3) Documentation or certification of compliance with the
applicable provisions of Sec. 63.119(f)(3)(i) through
Sec. 63.119(f)(3)(iii).
20. Section 63.126 is amended by revising paragraphs (a)(1) and
(a)(3); revising the introductory text of paragraph (b), and revising
paragraphs (b)(1) and (b)(3); adding paragraph (b)(4); and revising
paragraphs (d)(1), (d)(2), (h), and (i) to read as follows:
Sec. 63.126 Transfer operations provisions--reference control
technology.
(a) * * *
(1) Each vapor collection system shall be designed and operated to
collect the organic hazardous air pollutants vapors displaced from tank
trucks or railcars during loading, and to route the collected hazardous
air pollutants vapors to a process, or to a fuel gas system, or to a
control device as provided in paragraph (b) of this section.
* * * * *
(3) Whenever organic hazardous air pollutants emissions are vented
to a process, fuel gas system, or control device used to comply with
the provisions of this subpart, the process, fuel gas system, or
control device shall be operating.
(b) For each Group 1 transfer rack the owner or operator shall
comply with paragraph (b)(1), (b)(2), (b)(3), or (b)(4) of this
section.
(1) Use a control device to reduce emissions of total organic
hazardous air pollutants by 98 weight-percent or to an exit
concentration of 20 parts per million by volume, whichever is less
stringent. For combustion devices, the emission reduction or
concentration shall be calculated on a dry basis, corrected to 3-
percent oxygen. If a boiler or process heater is used to comply with
the percent reduction requirement, then the vent stream shall be
introduced into the flame zone of such a device. Compliance may be
achieved by using any combination of combustion, recovery, and/or
recapture devices.
* * * * *
(3) Reduce emissions of organic hazardous air pollutants using a
vapor balancing system designed and operated to collect organic
hazardous air pollutants vapors displaced from tank trucks or railcars
during loading; and to route the collected hazardous air pollutants
vapors to the storage vessel from which the liquid being loaded
originated, or to another storage vessel connected to a common header,
or to compress and route to a process collected hazardous air
pollutants vapors.
(4) Route emissions of organic hazardous air pollutants to a fuel
gas system or to a process where the organic hazardous air pollutants
in the emissions shall predominantly meet one of, or a combination of,
the ends specified in paragraphs (b)(4)(i) through (b)(4)(iv) of this
section.
(i) Recycled and/or consumed in the same manner as a material that
fulfills the same function in that process;
(ii) Transformed by chemical reaction into materials that are not
organic hazardous air pollutants;
(iii) Incorporated into a product; and/or
(iv) Recovered.
* * * * *
(d) * * *
(1) If a combustion device is used to comply with paragraph (b)(1)
of this section for a halogenated vent stream, then the vent stream
exiting the combustion device shall be ducted to a halogen reduction
device, including, but not limited to, a scrubber before it is
discharged to the atmosphere.
(i) Except as provided in paragraph (d)(1)(ii) of this section, the
halogen reduction device shall reduce overall emissions of hydrogen
halides and halogens, as defined in Sec. 63.111 of this subpart, by 99
percent or shall reduce the outlet mass emission rate of total hydrogen
halides and halogens to 0.45 kilograms per hour or less, whichever is
less stringent.
(ii) If a scrubber or other halogen reduction device was installed
prior to December 31, 1992, the halogen reduction device shall reduce
overall emissions of hydrogen halides and halogens, as defined in
Sec. 63.111 of this subpart, by 95 percent or shall reduce the outlet
mass of total hydrogen halides and halogens to less than 0.45 kilograms
per hour, whichever is less stringent.
(2) A halogen reduction device, such as a scrubber, or other
technique may be used to make the vent stream non-halogenated by
reducing the vent stream halogen atom mass emission rate to less than
0.45 kilograms per hour prior to any combustion control device used to
comply with the requirements of paragraphs (b)(1) or (b)(2) of this
section.
* * * * *
(h) The owner or operator of a transfer rack subject to the
provisions of this subpart shall ensure that no pressure-relief device
in the transfer rack's vapor collection system or in the organic
hazardous air pollutants loading equipment of each tank truck or
railcar shall begin to open during loading. Pressure relief devices
needed for safety purposes are not subject to this paragraph.
(i) Each valve in the vent system that would divert the vent stream
to the atmosphere, either directly or indirectly, shall be secured in a
non-diverting position using a carseal or a lock-and-key type
configuration, or shall be equipped with a flow indicator. Equipment
such as low leg drains, high point bleeds, analyzer vents, open-ended
valves or lines, and pressure relief devices needed for safety purposes
is not subject to this paragraph.
21. Section 63.127 is amended by revising the introductory text of
paragraph (a) and revising paragraph (a)(4)(ii); revising the
introductory text of paragraph (b), revising paragraph (b)(3), and
revising the first sentence of paragraph (d)(1) to read as follows:
Sec. 63.127 Transfer operations provisions--monitoring requirements.
(a) Each owner or operator of a Group 1 transfer rack equipped with
a combustion device used to comply with the 98 percent total organic
hazardous air pollutants reduction or 20 parts per million by volume
outlet concentration requirements in Sec. 63.126(b)(1) of this subpart
shall install, calibrate, maintain, and operate according to the
manufacturers' specifications (or other written procedures that provide
adequate assurance that the equipment would reasonably be expected to
monitor accurately) the monitoring equipment specified in paragraph
(a)(1), (a)(2), (a)(3), or (a)(4) of this section, as appropriate.
* * * * *
(4) * * *
(ii) A flow meter equipped with a continuous recorder shall be
located at the scrubber influent for liquid flow. Gas stream flow shall
be determined using one of the procedures specified in paragraphs
(a)(4)(ii)(A) through (a)(4)(ii)(C) of this section.
(A) The owner or operator may determine gas stream flow using the
design blower capacity, with appropriate adjustments for pressure drop.
(B) If the scrubber is subject to regulations in 40 CFR parts 264
through 266 that have required a determination of the liquid to gas (L/
G) ratio prior to the applicable compliance date for this subpart
specified in Sec. 63.100(k) of subpart F of this part, the owner or
operator may determine gas stream flow by the method that had been
utilized to comply with those regulations. A determination that was
conducted prior to the compliance date for this subpart may be utilized
to comply with this subpart if it is still representative.
(C) The owner or operator may prepare and implement a gas stream
[[Page 2750]]
flow determination plan that documents an appropriate method which will
be used to determine the gas stream flow. The plan shall require
determination of gas stream flow by a method which will at least
provide a value for either a representative or the highest gas stream
flow anticipated in the scrubber during representative operating
conditions other than start-ups, shutdowns, or malfunctions. The plan
shall include a description of the methodology to be followed and an
explanation of how the selected methodology will reliably determine the
gas stream flow, and a description of the records that will be
maintained to document the determination of gas stream flow. The owner
or operator shall maintain the plan as specified in Sec. 63.103(c).
(b) Each owner or operator of a Group 1 transfer rack that uses a
recovery device or recapture device to comply with the 98-percent
organic hazardous air pollutants reduction or 20 parts per million by
volume hazardous air pollutants concentration requirements in
Sec. 63.126(b)(1) of this subpart shall install either an organic
monitoring device equipped with a continuous recorder, or the
monitoring equipment specified in paragraph (b)(1), (b)(2), or (b)(3)
of this section, depending on the type of recovery device or recapture
device used. All monitoring equipment shall be installed, calibrated,
and maintained according to the manufacturer's specifications or other
written procedures that provide adequate assurance that the equipment
would reasonably be expected to monitor accurately.
* * * * *
(3) Where a carbon adsorber is used, an integrating regeneration
stream flow monitoring device having an accuracy of 10
percent or better, capable of recording the total regeneration stream
mass flow for each regeneration cycle; and a carbon bed temperature
monitoring device, capable of recording the temperature of the carbon
bed after regeneration and within 15 minutes of completing any cooling
cycle shall be used.
* * * * *
(d) * * *
(1) Properly install, maintain, and operate a flow indicator that
takes a reading at least once every 15 minutes. * * *
* * * * *
22. Section 63.128 is amended by revising paragraph (a)(9)(iv); by
revising the first sentence in the introductory text of paragraph
(b)(1); by revising the introductory text of paragraph (c), revising
paragraph (c)(3) and adding paragraph (c)(7); revising the introductory
text of paragraph (d); and revising paragraphs (d)(1), (f)(2), and (g)
to read as follows:
Sec. 63.128 Transfer operations provisions--test methods and
procedures.
(a) * * *
(9) * * *
(iv) The emission rate correction factor or excess air, integrated
sampling and analysis procedures of Method 3B of 40 CFR part 60,
appendix A shall be used to determine the oxygen concentration. The
sampling site shall be the same as that of the organic hazardous air
pollutants or organic compound samples, and the samples shall be taken
during the same time that the organic hazardous air pollutants or
organic compound samples are taken.
* * * * *
(b) * * *
(1) The compliance determination shall be conducted using Method 22
of 40 CFR part 60, appendix A, to determine visible emissions. * * *
* * * * *
(c) An owner or operator is not required to conduct a performance
test when any of the conditions specified in paragraphs (c)(1) through
(c)(7) of this section are met.
* * * * *
(3) When emissions are routed to a fuel gas system or when a boiler
or process heater is used and the vent stream is introduced with the
primary fuel.
* * * * *
(7) When a hazardous waste incinerator is used for which the owner
or operator has been issued a final permit under 40 CFR part 270 and
complies with the requirements of 40 CFR part 264, subpart O, or has
certified compliance with the interim status requirements 40 CFR part
265, subpart O.
(d) An owner or operator using a combustion device followed by a
scrubber or other halogen reduction device to control a halogenated
transfer vent stream in compliance with Sec. 63.126(d) of this subpart
shall conduct a performance test to determine compliance with the
control efficiency or emission limits for hydrogen halides and
halogens.
(1) For an owner or operator determining compliance with the
percent reduction of total hydrogen halides and halogens, sampling
sites shall be located at the inlet and outlet of the scrubber or other
halogen reduction device used to reduce halogen emissions. For an owner
or operator complying with the 0.45 kilogram per hour outlet mass
emission rate limit for total hydrogen halides and halogens, the
sampling site shall be located at the outlet of the scrubber or other
halogen reduction device and prior to release to the atmosphere.
* * * * *
(f) * * *
(2) A pressure measurement device which has a precision of #2.5
millimeters of mercury or better and which is capable of measuring
above the pressure at which the tank truck or railcar is to be tested
for vapor tightness.
(g) An owner or operator using a scrubber or other halogen
reduction device to reduce the vent stream halogen atom mass emission
rate to less than 0.45 kilograms per hour prior to a combustion device
used to comply with Sec. 63.126(d)(2) shall determine the halogen atom
mass emission rate prior to the combustor according to the procedures
in paragraph (d)(3) of this section.
* * * * *
23. Section 63.129 is amended by revising paragraph (a)(1) and the
last sentence of paragraph (a)(4)(ii), and by adding paragraph (a)(8)
to read as follows:
Sec. 63.129 Transfer operations provisions--reporting and
recordkeeping for performance tests and Notification of Compliance
Status.
(a) * * *
(1) Keep an up-to-date, readily accessible record of the data
specified in paragraphs (a)(4) through (a)(8) of this section, as
applicable.
* * * * *
(4) * * *
(ii) * * * For combustion devices, the concentration shall be
reported on a dry basis corrected to 3-percent oxygen.
* * * * *
(8) Report that the emission stream is being routed to a fuel gas
system or a process, when complying using Sec. 63.126(b)(4).
* * * * *
24. Section 63.130 is amended by revising the introductory text of
paragraph (a)(2); removing paragraphs (a)(2)(i) through (a)(2)(iv);
redesignating paragraphs (a)(2)(v) through (a)(2)(vii) as (a)(2)(i)
through (a)(2)(iii); and revising paragraph (b)(1), the last sentence
of paragraph (b)(2), and revising paragraph (d)(4) to read as follows:
Sec. 63.130 Transfer operations provisions--periodic recordkeeping and
reporting.
(a) * * *
(2) Records of the daily average value of each monitored parameter
for each operating day determined according to
[[Page 2751]]
the procedures specified in Sec. 63.152(f), except as provided in
paragraphs (a)(2)(i) through (a)(2)(iii) of this section.
* * * * *
(b) * * *
(1) Hourly records of whether the flow indicator specified under
Sec. 63.127(d)(1) was operating and whether a diversion was detected at
any time during the hour, as well as records of the times of all
periods when the vent stream is diverted from the control device or the
flow indicator is not operating.
(2) * * * In such cases, the owner or operator shall record that
the monthly visual inspection of the seals or closure mechanisms has
been done, and shall record the occurrence of all periods when the seal
mechanism is broken, the by-pass line valve position has changed, or
the key for a lock-and-key type lock has been checked out, and records
of any car-seal that has broken, as listed in table 7 of this subpart.
* * * * *
(d) * * *
(4) Reports of all times recorded under paragraph (b)(2) of this
section when maintenance is performed on car-sealed valves, when the
car seal is broken, when the by-pass line valve position is changed, or
the key for a lock-and-key type configuration has been checked out.
* * * * *
Sec. 63.131 [Removed and Reserved]
25. Section 63.131 is removed and reserved.
26. Sections 63.132 through 63.147 are revised to read as follows:
Sec. 63.132 Process wastewater provisions--general.
(a) Existing sources. This paragraph specifies the requirements
applicable to process wastewater streams located at existing sources.
The owner or operator shall comply with the requirements in paragraphs
(a)(1) through (a)(3) of this section, no later than the applicable
dates specified in Sec. 63.100 of subpart F of this part.
(1) Determine wastewater streams to be controlled for Table 9
compounds. Determine whether each wastewater stream requires control
for Table 9 compounds by complying with the requirements in either
paragraph (a)(1)(i) or (a)(1)(ii) of this section, and comply with the
requirements in paragraph (a)(1)(iii) of this section.
(i) Comply with paragraph (c) of this section, determining whether
the wastewater stream is Group 1 or Group 2 for Table 9 compounds; or
(ii) Comply with paragraph (e) of this section, designating the
wastewater stream as a Group 1 wastewater stream.
(iii) Comply with paragraph (f) of this section.
(2) Requirements for Group 1 wastewater streams. For wastewater
streams that are Group 1 for Table 9 compounds, comply with paragraphs
(a)(2)(i) through (a)(2)(iv) of this section.
(i) Comply with the applicable requirements for wastewater tanks,
surface impoundments, containers, individual drain systems, and oil/
water separators as specified in Sec. 63.133 through Sec. 63.137 of
this subpart, except as provided in paragraphs (a)(2)(i)(A) and
(a)(2)(i)(B) of this section and Sec. 63.138(a)(3) of this subpart.
(A) The waste management units may be equipped with pressure relief
devices that vent directly to the atmosphere provided the pressure
relief device is not used for planned or routine venting of emissions.
(B) The pressure relief device remains in a closed position at all
times except when it is necessary for the pressure relief device to
open for the purpose of preventing physical damage or permanent
deformation of the waste management unit in accordance with good
engineering and safety practices.
(ii) Comply with the applicable requirements for control of Table 9
compounds as specified in Sec. 63.138 of this subpart. Alternatively,
the owner or operator may elect to comply with the treatment provisions
specified in Sec. 63.132(g) of this subpart.
(iii) Comply with the applicable monitoring and inspection
requirements specified in Sec. 63.143 of this subpart.
(iv) Comply with the applicable recordkeeping and reporting
requirements specified in Secs. 63.146 and 63.147 of this subpart.
(3) Requirements for Group 2 wastewater streams. For wastewater
streams that are Group 2, comply with the applicable recordkeeping and
reporting requirements specified in Secs. 63.146 and 63.147 of this
subpart.
(b) New sources. This paragraph specifies the requirements
applicable to process wastewater streams located at new sources. The
owner or operator shall comply with the requirements in paragraphs
(b)(1) through (b)(4) of this section, no later than the applicable
dates specified in Sec. 63.100 of subpart F of this part.
(1) Determine wastewater streams to be controlled for Table 8
compounds. Determine whether each wastewater stream requires control
for Table 8 compounds by complying with the requirements in either
paragraph (b)(1)(i) or (b)(1)(ii) of this section, and comply with the
requirements in paragraph (b)(1)(iii) of this section.
(i) Comply with paragraph (d) of this section, determining whether
the wastewater stream is Group 1 or Group 2 for Table 8 compounds; or
(ii) Comply with paragraph (e) of this section, designating the
wastewater stream as a Group 1 wastewater stream for Table 8 compounds.
(iii) Comply with paragraph (f) of this section.
(2) Determine wastewater streams to be controlled for Table 9
compounds. Determine whether each wastewater stream requires control
for Table 9 compounds by complying with the requirements in either
paragraph (b)(2)(i) or (b)(2)(ii) of this section, and comply with the
requirements in paragraph (b)(2)(iii) of this section.
(i) Comply with paragraph (c) of this section, determining whether
the wastewater stream is Group 1 or Group 2 for Table 9 compounds; or
(ii) Comply with paragraph (e) of this section, designating the
wastewater stream as a Group 1 wastewater stream.
(iii) Comply with paragraph (f) of this section.
(3) Requirements for Group 1 wastewater streams. For wastewater
streams that are Group 1 for Table 8 compounds and/or Table 9
compounds, comply with paragraphs (b)(3)(i) through (b)(3)(iv) of this
section.
(i) Comply with the applicable requirements for wastewater tanks,
surface impoundments, containers, individual drain systems, and oil/
water separators specified in the requirements of Sec. 63.133 through
Sec. 63.137 of this subpart, except as provided in paragraphs
(b)(3)(i)(A) and (b)(3)(i)(B) of this section and Sec. 63.138(a)(3) of
this subpart.
(A) The waste management units may be equipped with pressure relief
devices that vent directly to the atmosphere provided the pressure
relief device is not used for planned or routine venting of emissions.
(B) The pressure relief device remains in a closed position at all
times except when it is necessary for the pressure relief device to
open for the purpose of preventing physical damage or permanent
deformation of the waste management unit in accordance with good
engineering and safety practices.
(ii) Comply with the applicable requirements for control of Table 8
compounds specified in Sec. 63.138 of this subpart. Alternatively, the
owner or operator may elect to comply with the provisions specified in
Sec. 63.132(g) of this subpart.
(iii) Comply with the applicable monitoring and inspection
requirements specified in Sec. 63.143 of this subpart.
[[Page 2752]]
(iv) Comply with the applicable recordkeeping and reporting
requirements specified in Secs. 63.146 and 63.147 of this subpart.
(4) Requirements for Group 2 wastewater streams. For wastewater
streams that are Group 2 for both Table 8 and Table 9 compounds, comply
with the recordkeeping and reporting requirements specified in
Secs. 63.146 and 63.147 of this subpart.
(c) How to determine Group 1 or Group 2 status for Table 9
compounds. This paragraph provides instructions for determining whether
a wastewater stream is Group 1 or Group 2 for Table 9 compounds. Total
annual average concentration shall be determined according to the
procedures specified in Sec. 63.144(b) of this subpart. Annual average
flow rate shall be determined according to the procedures specified in
Sec. 63.144(c) of this subpart.
(1) A wastewater stream is a Group 1 wastewater stream for Table 9
compounds if:
(i) The total annual average concentration of Table 9 compounds is
greater than or equal to 10,000 parts per million by weight at any flow
rate; or
(ii) The total annual average concentration of Table 9 compounds is
greater than or equal to 1,000 parts per million by weight and the
annual average flow rate is greater than or equal to 10 liters per
minute.
(2) A wastewater stream is a Group 2 wastewater stream for Table 9
compounds if it is not a Group 1 wastewater stream for Table 9
compounds by the criteria in paragraph (c)(1) of this section.
(d) How to determine Group 1 or Group 2 status for Table 8
compounds. This paragraph provides instructions for determining whether
a wastewater sream is Group 1 or Group 2 for Table 8 compounds. Annual
average concentration for each Table 8 compound shall be determined
according to the procedures specified in Sec. 63.144(b) of this
subpart. Annual average flow rate shall be determined according to the
procedures specified in Sec. 63.144(c) of this subpart.
(1) A wastewater stream is a Group 1 wastewater stream for Table 8
compounds if the annual average flow rate is 0.02 liter per minute or
greater and the annual average concentration of any individual table 8
compound is 10 parts per million by weight or greater.
(2) A wastewater stream is a Group 2 wastewater stream for Table 8
compounds if the annual average flow rate is less than 0.02 liter per
minute or the annual average concentration for each individual Table 8
compound is less than 10 parts per million by weight.
(e) How to designate a Group 1 wastewater stream. The owner or
operator may elect to designate a wastewater stream a Group 1
wastewater stream in order to comply with paragraph (a)(1) or (b)(1) of
this section. To designate a wastewater stream or a mixture of
wastewater streams a Group 1 wastewater stream, the procedures
specified in paragraphs (e)(1) and (e)(2) of this section and
Sec. 63.144(a)(2) of this subpart shall be followed.
(1) From the point of determination for each wastewater stream that
is included in the Group 1 designation to the location where the owner
or operator elects to designate such wastewater stream(s) as a Group 1
wastewater stream, the owner or operator shall comply with all
applicable emission suppression requirements specified in Secs. 63.133
through 63.137.
(2) From the location where the owner or operator designates a
wastewater stream or mixture of wastewater streams to be a Group 1
wastewater stream, such Group 1 wastewater stream shall be managed in
accordance with all applicable emission suppression requirements
specified in Secs. 63.133 through 63.137 and with the treatment
requirements in Sec. 63.138 of this part.
(f) Owners or operators of sources subject to this subpart shall
not discard liquid or solid organic materials with a concentration of
greater than 10,000 parts per million of Table 9 compounds (as
determined by analysis of the stream composition, engineering
calculations, or process knowledge, according to the provisions of
Sec. 63.144(b) of this subpart) from a chemical manufacturing process
unit to water or wastewater, unless the receiving stream is managed and
treated as a Group 1 wastewater stream. This prohibition does not apply
to materials from the activities listed in paragraphs (f)(1) through
(f)(4) of this section.
(1) Equipment leaks;
(2) Activities included in maintenance or startup/shutdown/
malfunction plans;
(3) Spills; or
(4) Samples of a size not greater than reasonably necessary for the
method of analysis that is used.
(g) Off-site treatment or on-site treatment not owned or operated
by the source. The owner or operator may elect to transfer a Group 1
wastewater stream or residual removed from a Group 1 wastewater stream
to an on-site treatment operation not owned or operated by the owner or
operator of the source generating the wastewater stream or residual, or
to an off-site treatment operation.
(1) The owner or operator transferring the wastewater stream or
residual shall:
(i) Comply with the provisions specified in Secs. 63.133 through
63.137 of this subpart for each waste management unit that receives or
manages a Group 1 wastewater stream or residual removed from a Group 1
wastewater stream prior to shipment or transport.
(ii) Include a notice with the shipment or transport of each Group
1 wastewater stream or residual removed from a Group 1 wastewater
stream. The notice shall state that the wastewater stream or residual
contains organic hazardous air pollutants that are to be treated in
accordance with the provisions of this subpart. When the transport is
continuous or ongoing (for example, discharge to a publicly-owned
treatment works), the notice shall be submitted to the treatment
operator initially and whenever there is a change in the required
treatment.
(2) The owner or operator may not transfer the wastewater stream or
residual unless the transferee has submitted to the EPA a written
certification that the transferee will manage and treat any Group 1
wastewater stream or residual removed from a Group 1 wastewater stream
received from a source subject to the requirements of this subpart in
accordance with the requirements of either Secs. 63.133 through 63.147,
or Sec. 63.102(b) of subpart F, or subpart D of this part if
alternative emission limitations have been granted the transferor in
accordance with those provisions. The certifying entity may revoke the
written certification by sending a written statement to the EPA and the
owner or operator giving at least 90 days notice that the certifying
entity is rescinding acceptance of responsibility for compliance with
the regulatory provisions listed in this paragraph. Upon expiration of
the notice period, the owner or operator may not transfer the
wastewater stream or residual to the treatment operation.
(3) By providing this written certification to the EPA, the
certifying entity accepts responsibility for compliance with the
regulatory provisions listed in paragraph (g)(2) of this section with
respect to any shipment of wastewater or residual covered by the
written certification. Failure to abide by any of those provisions with
respect to such shipments may result in enforcement action by the EPA
against the certifying entity in accordance with the enforcement
provisions applicable to violations of these provisions by owners or
operators of sources.
[[Page 2753]]
(4) Written certifications and revocation statements, to the EPA
from the transferees of wastewater or residuals shall be signed by the
responsible official of the certifying entity, provide the name and
address of the certifying entity, and be sent to the appropriate EPA
Regional Office at the addresses listed in 40 CFR 63.13. Such written
certifications are not transferable by the treater.
Sec. 63.133 Process wastewater provisions--wastewater tanks.
(a) For each wastewater tank that receives, manages, or treats a
Group 1 wastewater stream or a residual removed from a Group 1
wastewater stream, the owner or operator shall comply with the
requirements of either paragraph (a)(1) or (a)(2) of this section as
specified in table 10 of this subpart.
(1) The owner or operator shall operate and maintain a fixed roof
except that if the wastewater tank is used for heating wastewater, or
treating by means of an exothermic reaction or the contents of the tank
is sparged, the owner or operator shall comply with the requirements
specified in paragraph (a)(2) of this section.
(2) The owner or operator shall comply with the requirements in
paragraphs (b) through (h) of this section and shall operate and
maintain one of the emission control techniques listed in paragraphs
(a)(2)(i) through (a)(2)(iv) of this section.
(i) A fixed roof and a closed-vent system that routes the organic
hazardous air pollutants vapors vented from the wastewater tank to a
control device.
(ii) A fixed roof and an internal floating roof that meets the
requirements specified in Sec. 63.119(b) of this subpart;
(iii) An external floating roof that meets the requirements
specified in Secs. 63.119(c), 63.120(b)(5), and 63.120(b)(6) of this
subpart; or
(iv) An equivalent means of emission limitation. Determination of
equivalence to the reduction in emissions achieved by the requirements
of paragraphs (a)(2)(i) through (a)(2)(iii) of this section will be
evaluated according to Sec. 63.102(b) of subpart F of this part. The
determination will be based on the application to the Administrator
which shall include the information specified in either paragraph
(a)(2)(iv)(A) or (a)(2)(iv)(B) of this section.
(A) Actual emissions tests that use full-size or scale-model
wastewater tanks that accurately collect and measure all organic
hazardous air pollutants emissions from a given control technique, and
that accurately simulate wind and account for other emission variables
such as temperature and barometric pressure, or
(B) An engineering evaluation that the Administrator determines is
an accurate method of determining equivalence.
(b) If the owner or operator elects to comply with the requirements
of paragraph (a)(2)(i) of this section, the fixed roof shall meet the
requirements of paragraph (b)(1) of this section, the control device
shall meet the requirements of paragraph (b)(2) of this section, and
the closed-vent system shall meet the requirements of paragraph (b)(3)
of this section.
(1) The fixed-roof shall meet the following requirements:
(i) Except as provided in paragraph (b)(4) of this section, the
fixed roof and all openings (e.g., access hatches, sampling ports, and
gauge wells) shall be maintained in accordance with the requirements
specified in Sec. 63.148 of this subpart.
(ii) Each opening shall be maintained in a closed position (e.g.,
covered by a lid) at all times that the wastewater tank contains a
Group 1 wastewater stream or residual removed from a Group 1 wastewater
stream except when it is necessary to use the opening for wastewater
sampling, removal, or for equipment inspection, maintenance, or repair.
(2) The control device shall be designed, operated, and inspected
in accordance with the requirements of Sec. 63.139 of this subpart.
(3) Except as provided in paragraph (b)(4) of this section, the
closed-vent system shall be inspected in accordance with the
requirements of Sec. 63.148 of this subpart.
(4) For any fixed roof tank and closed-vent system that is operated
and maintained under negative pressure, the owner or operator is not
required to comply with the requirements specified in Sec. 63.148 of
this subpart.
(c) If the owner or operator elects to comply with the requirements
of paragraph (a)(2)(ii) of this section, the floating roof shall be
inspected according to the procedures specified in Sec. 63.120(a)(2)
and (a)(3) of this subpart.
(d) Except as provided in paragraph (e) of this section, if the
owner or operator elects to comply with the requirements of paragraph
(a)(2)(iii) of this section, seal gaps shall be measured according to
the procedures specified in Sec. 63.120(b)(2)(i) through (b)(4) of this
subpart and the wastewater tank shall be inspected to determine
compliance with Sec. 63.120(b)(5) and (b)(6) of this subpart.
(e) If the owner or operator determines that it is unsafe to
perform the seal gap measurements specified in Sec. 63.120(b)(2)(i)
through (b)(4) of this subpart or to inspect the wastewater tank to
determine compliance with Sec. 63.120(b)(5) and (b)(6) of this subpart
because the floating roof appears to be structurally unsound and poses
an imminent or potential danger to inspecting personnel, the owner or
operator shall comply with the requirements in either paragraph (e)(1)
or (e)(2) of this section.
(1) The owner or operator shall measure the seal gaps or inspect
the wastewater tank within 30 calendar days of the determination that
the floating roof is unsafe, or
(2) The owner or operator shall empty and remove the wastewater
tank from service within 45 calendar days of determining that the roof
is unsafe. If the wastewater tank cannot be emptied within 45 calendar
days, the owner or operator may utilize up to two extensions of up to
30 additional calendar days each. Documentation of a decision to
utilize an extension shall include an explanation of why it was unsafe
to perform the inspection or seal gap measurement, shall document that
alternate storage capacity is unavailable, and shall specify a schedule
of actions that will ensure that the wastewater tank will be emptied as
soon as practical.
(f) Except as provided in paragraph (e) of this section, each
wastewater tank shall be inspected initially, and semi-annually
thereafter, for improper work practices in accordance with Sec. 63.143
of this subpart. For wastewater tanks, improper work practice includes,
but is not limited to, leaving open any access door or other opening
when such door or opening is not in use.
(g) Except as provided in paragraph (e) of this section, each
wastewater tank shall be inspected for control equipment failures as
defined in paragraph (g)(1) of this section according to the schedule
in paragraphs (g)(2) and (g)(3) of this section.
(1) Control equipment failures for wastewater tanks include, but
are not limited to, the conditions specified in paragraphs (g)(1)(i)
through (g)(1)(ix) of this section.
(i) The floating roof is not resting on either the surface of the
liquid or on the leg supports.
(ii) There is stored liquid on the floating roof.
(iii) A rim seal is detached from the floating roof.
(iv) There are holes, tears, cracks or gaps in the rim seal or seal
fabric of the floating roof.
(v) There are visible gaps between the seal of an internal floating
roof and the wall of the wastewater tank.
[[Page 2754]]
(vi) There are gaps between the metallic shoe seal or the liquid
mounted primary seal of an external floating roof and the wall of the
wastewater tank that exceed 212 square centimeters per meter of tank
diameter or the width of any portion of any gap between the primary
seal and the tank wall exceeds 3.81 centimeters.
(vii) There are gaps between the secondary seal of an external
floating roof and the wall of the wastewater tank that exceed 21.2
square centimeters per meter of tank diameter or the width of any
portion of any gap between the secondary seal and the tank wall exceeds
1.27 centimeters.
(viii) Where a metallic shoe seal is used on an external floating
roof, one end of the metallic shoe does not extend into the stored
liquid or one end of the metallic shoe does not extend a minimum
vertical distance of 61 centimeters above the surface of the stored
liquid.
(ix) A gasket, joint, lid, cover, or door has a crack or gap, or is
broken.
(2) The owner or operator shall inspect for the control equipment
failures in paragraphs (g)(1)(i) through (g)(1)(viii) of this section
according to the schedule specified in paragraphs (c) and (d) of this
section.
(3) The owner or operator shall inspect for the control equipment
failures in paragraph (g)(1)(ix) of this section initially, and semi-
annually thereafter.
(h) Except as provided in Sec. 63.140 of this subpart, when an
improper work practice or a control equipment failure is identified,
first efforts at repair shall be made no later than 5 calendar days
after identification and repair shall be completed within 45 calendar
days after identification. If a failure that is detected during
inspections required by paragraphs (a)(2)(i) or (a)(3)(ii) of this
section cannot be repaired within 45 calendar days and if the vessel
cannot be emptied within 45 calendar days, the owner or operator may
utilize up to two extensions of up to 30 additional calendar days each.
Documentation of a decision to utilize an extension shall include a
description of the failure, shall document that alternate storage
capacity is unavailable, and shall specify a schedule of actions that
will ensure that the control equipment will be repaired or the vessel
will be emptied as soon as practical.
Sec. 63.134 Process wastewater provisions--surface impoundments.
(a) For each surface impoundment that receives, manages, or treats
a Group 1 wastewater stream or a residual removed from a Group 1
wastewater stream, the owner or operator shall comply with the
requirements of paragraphs (b), (c), and (d) of this section.
(b) The owner or operator shall operate and maintain on each
surface impoundment either a cover (e.g., air-supported structure or
rigid cover) and a closed-vent system that routes the organic hazardous
air pollutants vapors vented from the surface impoundment to a control
device in accordance with paragraph (b)(1) of this section, or a
floating flexible membrane cover as specified in paragraph (b)(2) of
this section.
(1) The cover and all openings shall meet the following
requirements:
(i) Except as provided in paragraph (b)(4) of this section, the
cover and all openings (e.g., access hatches, sampling ports, and gauge
wells) shall be maintained in accordance with the requirements
specified in Sec. 63.148 of this subpart.
(ii) Each opening shall be maintained in a closed position (e.g.,
covered by a lid) at all times that a Group 1 wastewater stream or
residual removed from a Group 1 wastewater stream is in the surface
impoundment except when it is necessary to use the opening for
sampling, removal, or for equipment inspection, maintenance, or repair.
(iii) The cover shall be used at all times that a Group 1
wastewater stream or residual removed from a Group 1 wastewater stream
is in the surface impoundment except during removal of treatment
residuals in accordance with 40 CFR 268.4 or closure of the surface
impoundment in accordance with 40 CFR 264.228.
(2) Floating flexible membrane covers shall meet the requirements
specified in paragraphs (b)(2)(i) through (b)(2)(vii) of this section.
(i) The floating flexible cover shall be designed to float on the
liquid surface during normal operations, and to form a continuous
barrier over the entire surface area of the liquid.
(ii) The cover shall be fabricated from a synthetic membrane
material that is either:
(A) High density polyethylene (HDPE) with a thickness no less than
2.5 millimeters (100 mils); or
(B) A material or a composite of different materials determined to
have both organic permeability properties that are equivalent to those
of the material listed in paragraph (b)(2)(i) of this section, and
chemical and physical properties that maintain the material integrity
for the intended service life of the material.
(iii) The cover shall be installed in a manner such that there are
no visible cracks, holes, gaps, or other open spaces between cover
section seams or between the interface of the cover edge and its
foundation mountings.
(iv) Except as provided for in paragraph (b)(2)(v) of this section,
each opening in the floating membrane cover shall be equipped with a
closure device designed to operate such that when the closure device is
secured in the closed position there are no visible cracks, holes,
gaps, or other open spaces in the closure device or between the
perimeter of the cover opening and the closure device.
(v) The floating membrane cover may be equipped with one or more
emergency cover drains for removal of stormwater. Each emergency cover
drain shall be equipped with a slotted membrane fabric cover that
covers at least 90 percent of the area of the opening or a flexible
fabric sleeve seal.
(vi) The closure devices shall be made of suitable materials that
will minimize exposure of organic hazardous air pollutants to the
atmosphere, to the extent practical, and will maintain the integrity of
the equipment throughout its intended service life. Factors to be
considered in designing the closure devices shall include: The effects
of any contact with the liquid and its vapor managed in the surface
impoundment; the effects of outdoor exposure to wind, moisture, and
sunlight; and the operating practices used for the surface impoundment
on which the floating membrane cover is installed.
(vii) Whenever a Group 1 wastewater stream or residual from a Group
1 wastewater stream is in the surface impoundment, the floating
membrane cover shall float on the liquid and each closure device shall
be secured in the closed position. Opening of closure devices or
removal of the cover is allowed to provide access to the surface
impoundment for performing routine inspection, maintenance, or other
activities needed for normal operations and/or to remove accumulated
sludge or other residues from the bottom of surface impoundment.
Openings shall be maintained in accordance with Sec. 63.148 of this
subpart.
(3) The control device shall be designed, operated, and inspected
in accordance with Sec. 63.139 of this subpart.
(4) Except as provided in paragraph (b)(5) of this section, the
closed-vent system shall be inspected in accordance with Sec. 63.148 of
this subpart.
(5) For any cover and closed-vent system that is operated and
maintained under negative pressure, the owner or operator is not
required to comply with
[[Page 2755]]
the requirements specified in Sec. 63.148 of this subpart.
(c) Each surface impoundment shall be inspected initially, and
semi-annually thereafter, for improper work practices and control
equipment failures in accordance with Sec. 63.143 of this subpart.
(1) For surface impoundments, improper work practice includes, but
is not limited to, leaving open any access hatch or other opening when
such hatch or opening is not in use.
(2) For surface impoundments, control equipment failure includes,
but is not limited to, any time a joint, lid, cover, or door has a
crack or gap, or is broken.
(d) Except as provided in Sec. 63.140 of this subpart, when an
improper work practice or a control equipment failure is identified,
first efforts at repair shall be made no later than 5 calendar days
after identification and repair shall be completed within 45 calendar
days after identification.
Sec. 63.135 Process wastewater provisions--containers.
(a) For each container that receives, manages, or treats a Group 1
wastewater stream or a residual removed from a Group 1 wastewater
stream, the owner or operator shall comply with the requirements of
paragraphs (b) through (f) of this section.
(b) The owner or operator shall operate and maintain a cover on
each container used to handle, transfer, or store a Group 1 wastewater
stream or residual removed from a Group 1 wastewater stream in
accordance with the following requirements:
(1) Except as provided in paragraph (d)(4) of this section, if the
capacity of the container is greater than 0.42 m3, the cover and
all openings (e.g., bungs, hatches, sampling ports, and pressure relief
devices) shall be maintained in accordance with the requirements
specified in Sec. 63.148 of this subpart.
(2) If the capacity of the container is less than or equal to 0.42
m3, the owner or operator shall comply with either paragraph
(b)(2)(i) or (b)(2)(ii) of this section.
(i) The container must meet existing Department of Transportation
specifications and testing requirements under 49 CFR part 178; or
(ii) Except as provided in paragraph (d)(4) of this section, the
cover and all openings shall be maintained without leaks as specified
in Sec. 63.148 of this subpart.
(3) The cover and all openings shall be maintained in a closed
position (e.g., covered by a lid) at all times that a Group 1
wastewater stream or residual removed from a Group 1 wastewater stream
is in the container except when it is necessary to use the opening for
filling, removal, inspection, sampling, or pressure relief events
related to safety considerations.
(c) For containers with a capacity greater than or equal to 0.42
m3, a submerged fill pipe shall be used when a container is being
filled by pumping with a Group 1 wastewater stream or residual removed
from a Group 1 wastewater stream.
(1) The submerged fill pipe outlet shall extend to no more than 6
inches or within two fill pipe diameters of the bottom of the container
while the container is being filled.
(2) The cover shall remain in place and all openings shall be
maintained in a closed position except for those openings required for
the submerged fill pipe and for venting of the container to prevent
physical damage or permanent deformation of the container or cover.
(d) During treatment of a Group 1 wastewater stream or residual
removed from a Group 1 wastewater stream, including aeration, thermal
or other treatment, in a container, whenever it is necessary for the
container to be open, the container shall be located within an
enclosure with a closed-vent system that routes the organic hazardous
air pollutants vapors vented from the container to a control device.
(1) Except as provided in paragraph (d)(4) of this section, the
enclosure and all openings (e.g., doors, hatches) shall be maintained
in accordance with the requirements specified in Sec. 63.148 of this
subpart.
(2) The control device shall be designed, operated, and inspected
in accordance with Sec. 63.139 of this subpart.
(3) Except as provided in paragraph (d)(4) of this section, the
closed-vent system shall be inspected in accordance with Sec. 63.148 of
this subpart.
(4) For any enclosure and closed-vent system that is operated and
maintained under negative pressure, the owner or operator is not
required to comply with the requirements specified in Sec. 63.148 of
this subpart.
(e) Each container shall be inspected initially, and semi-annually
thereafter, for improper work practices and control equipment failures
in accordance with Sec. 63.143 of this subpart.
(1) For containers, improper work practice includes, but is not
limited to, leaving open any access hatch or other opening when such
hatch or opening is not in use.
(2) For containers, control equipment failure includes, but is not
limited to, any time a cover or door has a gap or crack, or is broken.
(f) Except as provided in Sec. 63.140 of this subpart, when an
improper work practice or a control equipment failure is identified,
first efforts at repair shall be made no later than 5 calendar days
after identification and repair shall be completed within 15 calendar
days after identification.
Sec. 63.136 Process wastewater provisions--individual drain systems.
(a) For each individual drain system that receives or manages a
Group 1 wastewater stream or a residual removed from a Group 1
wastewater stream, the owner or operator shall comply with the
requirements of paragraphs (b), (c), and (d) or with paragraphs (e),
(f), and (g) of this section.
(b) If the owner or operator elects to comply with this paragraph,
the owner or operator shall operate and maintain on each opening in the
individual drain system a cover and if vented, route the vapors to a
process or through a closed vent system to a control device. The owner
or operator shall comply with the requirements of paragraphs (b)(1)
through (b)(5) of this section.
(1) The cover and all openings shall meet the following
requirements:
(i) Except as provided in paragraph (b)(4) of this section, the
cover and all openings (e.g., access hatches, sampling ports) shall be
maintained in accordance with the requirements specified in Sec. 63.148
of this subpart.
(ii) The cover and all openings shall be maintained in a closed
position at all times that a Group 1 wastewater stream or residual
removed from a Group 1 wastewater stream is in the drain system except
when it is necessary to use the opening for sampling or removal, or for
equipment inspection, maintenance, or repair.
(2) The control device shall be designed, operated, and inspected
in accordance with Sec. 63.139 of this subpart.
(3) Except as provided in paragraph (b)(4) of this section, the
closed-vent system shall be inspected in accordance with Sec. 63.148 of
this subpart.
(4) For any cover and closed-vent system that is operated and
maintained under negative pressure, the owner or operator is not
required to comply with the requirements specified in Sec. 63.148 of
this subpart.
(5) The individual drain system shall be designed and operated to
segregate the vapors within the system from other drain systems and the
atmosphere.
(c) Each individual drain system shall be inspected initially, and
semi-
[[Page 2756]]
annually thereafter, for improper work practices and control equipment
failures, in accordance with the inspection requirements specified in
table 11 of this subpart.
(1) For individual drain systems, improper work practice includes,
but is not limited to, leaving open any access hatch or other opening
when such hatch or opening is not in use for sampling or removal, or
for equipment inspection, maintenance, or repair.
(2) For individual drain systems, control equipment failure
includes, but is not limited to, any time a joint, lid, cover, or door
has a gap or crack, or is broken.
(d) Except as provided in Sec. 63.140 of this subpart, when an
improper work practice or a control equipment failure is identified,
first efforts at repair shall be made no later than 5 calendar days
after identification and repair shall be completed within 15 calendar
days after identification.
(e) If the owner or operator elects to comply with this paragraph,
the owner or operator shall comply with the requirements in paragraphs
(e)(1) through (e)(3) of this section:
(1) Each drain shall be equipped with water seal controls or a
tightly fitting cap or plug. The owner or operator shall comply with
paragraphs (e)(1)(i) and (e)(1)(ii) of this section.
(i) For each drain equipped with a water seal, the owner or
operator shall ensure that the water seal is maintained. For example, a
flow-monitoring device indicating positive flow from a main to a branch
water line supplying a trap or water being continuously dripped into
the trap by a hose could be used to verify flow of water to the trap.
Visual observation is also an acceptable alternative.
(ii) If a water seal is used on a drain receiving a Group 1
wastewater, the owner or operator shall either extend the pipe
discharging the wastewater below the liquid surface in the water seal
of the receiving drain, or install a flexible shield (or other
enclosure which restricts wind motion across the open area between the
pipe and the drain) that encloses the space between the pipe
discharging the wastewater to the drain receiving the wastewater.
(Water seals which are used on hubs receiving Group 2 wastewater for
the purpose of eliminating cross ventilation to drains carrying Group 1
wastewater are not required to have a flexible cap or extended
subsurface discharging pipe.)
(2) Each junction box shall be equipped with a tightly fitting
solid cover (i.e., no visible gaps, cracks, or holes) which shall be
kept in place at all times except during inspection and maintenance. If
the junction box is vented, the owner or operator shall comply with the
requirements in paragraph (e)(2)(i) or (e)(2)(ii) of this section.
(i) The junction box shall be vented to a process or through a
closed vent system to a control device. The closed vent system shall be
inspected in accordance with the requirements of Sec. 63.148 and the
control device shall be designed, operated, and inspected in accordance
with the requirements of Sec. 63.139.
(ii) If the junction box is filled and emptied by gravity flow
(i.e., there is no pump) or is operated with no more than slight
fluctuations in the liquid level, the owner or operator may vent the
junction box to the atmosphere provided that the junction box complies
with the requirements in paragraphs (e)(2)(ii)(A) and (e)(2)(ii)(B) of
this section.
(A) The vent pipe shall be at least 90 centimeters in length and no
greater than 10.2 centimeters in nominal inside diameter.
(B) Water seals shall be installed and maintained at the wastewater
entrance(s) to or exit from the junction box restricting ventilation in
the individual drain system and between components in the individual
drain system. The owner or operator shall demonstrate (e.g., by visual
inspection or smoke test) upon request by the Administrator that the
junction box water seal is properly designed and restricts ventilation.
(3) Each sewer line shall not be open to the atmosphere and shall
be covered or enclosed in a manner so as to have no visible gaps or
cracks in joints, seals, or other emission interfaces.
(f) Equipment used to comply with paragraphs (e)(1), (e)(2), or
(e)(3) of this section shall be inspected as follows:
(1) Each drain using a tightly fitting cap or plug shall be
visually inspected initially, and semi-annually thereafter, to ensure
caps or plugs are in place and that there are no gaps, cracks, or other
holes in the cap or plug.
(2) Each junction box shall be visually inspected initially, and
semi-annually thereafter, to ensure that there are no gaps, cracks, or
other holes in the cover.
(3) The unburied portion of each sewer line shall be visually
inspected initially, and semi-annually thereafter, for indication of
cracks or gaps that could result in air emissions.
(g) Except as provided in Sec. 63.140 of this subpart, when a gap,
hole, or crack is identified in a joint or cover, first efforts at
repair shall be made no later than 5 calendar days after
identification, and repair shall be completed within 15 calendar days
after identification.
Sec. 63.137 Process wastewater provisions--oil-water separators.
(a) For each oil-water separator that receives, manages, or treats
a Group 1 wastewater stream or a residual removed from a Group 1
wastewater stream, the owner or operator shall comply with the
requirements of paragraphs (c) and (d) of this section and shall
operate and maintain one of the following:
(1) A fixed roof and a closed vent system that routes the organic
hazardous air pollutants vapors vented from the oil-water separator to
a control device. The fixed roof, closed-vent system, and control
device shall meet the requirements specified in paragraph (b) of this
section;
(2) A floating roof meeting the requirements in 40 CFR part 60,
subpart QQQ Secs. 60.693-2(a)(1)(i), (a)(1)(ii), (a)(2), (a)(3), and
(a)(4). For portions of the oil-water separator where it is infeasible
to construct and operate a floating roof, such as over the weir
mechanism, the owner or operator shall operate and maintain a fixed
roof, closed vent system, and control device that meet the requirements
specified in paragraph (b) of this section.
(3) An equivalent means of emission limitation. Determination of
equivalence to the reduction in emissions achieved by the requirements
of paragraphs (a)(1) and (a)(2) of this section will be evaluated
according to Sec. 63.102(b) of subpart F of this part. The
determination will be based on the application to the Administrator
which shall include the information specified in either paragraph
(a)(3)(i) or (a)(3)(ii) of this section.
(i) Actual emissions tests that use full-size or scale-model oil-
water separators that accurately collect and measure all organic
hazardous air pollutants emissions from a given control technique, and
that accurately simulate wind and account for other emission variables
such as temperature and barometric pressure, or
(ii) An engineering evaluation that the Administrator determines is
an accurate method of determining equivalence.
(b) If the owner or operator elects to comply with the requirements
of paragraphs (a)(1) or (a)(2) of this section, the fixed roof shall
meet the requirements of paragraph (b)(1) of this section, the control
device shall meet the requirements of paragraph (b)(2) of this section,
and the closed-vent system shall meet the requirements of paragraph
(b)(3) of this section.
[[Page 2757]]
(1) The fixed-roof shall meet the following requirements:
(i) Except as provided in paragraph (b)(4) of this section, the
fixed roof and all openings (e.g., access hatches, sampling ports, and
gauge wells) shall be maintained in accordance with the requirements
specified in Sec. 63.148 of this subpart.
(ii) Each opening shall be maintained in a closed, sealed position
(e.g., covered by a lid that is gasketed and latched) at all times that
the oil-water separator contains a Group 1 wastewater stream or
residual removed from a Group 1 wastewater stream except when it is
necessary to use the opening for sampling or removal, or for equipment
inspection, maintenance, or repair.
(2) The control device shall be designed, operated, and inspected
in accordance with the requirements of Sec. 63.139 of this subpart.
(3) Except as provided in paragraph (b)(4) of this section, the
closed-vent system shall be inspected in accordance with the
requirements of Sec. 63.148 of this subpart.
(4) For any fixed roof and closed-vent system that is operated and
maintained under negative pressure, the owner or operator is not
required to comply with the requirements of Sec. 63.148 of this
subpart.
(c) If the owner or operator elects to comply with the requirements
of paragraph (a)(2) of this section, seal gaps shall be measured
according to the procedures specified in 40 CFR part 60, subpart QQQ
Sec. 60.696(d)(1) and the schedule specified in paragraphs (c)(1) and
(c)(2) of this section.
(1) Measurement of primary seal gaps shall be performed within 60
calendar days after installation of the floating roof and introduction
of a Group 1 wastewater stream or residual removed from a Group 1
wastewater stream and once every 5 years thereafter.
(2) Measurement of secondary seal gaps shall be performed within 60
calendar days after installation of the floating roof and introduction
of a Group 1 wastewater stream or residual removed from a Group 1
wastewater stream and once every year thereafter.
(d) Each oil-water separator shall be inspected initially, and
semi-annually thereafter, for improper work practices in accordance
with Sec. 63.143 of this subpart. For oil-water separators, improper
work practice includes, but is not limited to, leaving open or
ungasketed any access door or other opening when such door or opening
is not in use.
(e) Each oil-water separator shall be inspected for control
equipment failures as defined in paragraph (e)(1) of this section
according to the schedule specified in paragraphs (e)(2) and (e)(3) of
this section.
(1) For oil-water separators, control equipment failure includes,
but is not limited to, the conditions specified in paragraphs (e)(1)(i)
through (e)(1)(vii) of this section.
(i) The floating roof is not resting on either the surface of the
liquid or on the leg supports.
(ii) There is stored liquid on the floating roof.
(iii) A rim seal is detached from the floating roof.
(iv) There are holes, tears, or other open spaces in the rim seal
or seal fabric of the floating roof.
(v) There are gaps between the primary seal and the separator wall
that exceed 67 square centimeters per meter of separator wall perimeter
or the width of any portion of any gap between the primary seal and the
separator wall exceeds 3.8 centimeters.
(vi) There are gaps between the secondary seal and the separator
wall that exceed 6.7 square centimeters per meter of separator wall
perimeter or the width of any portion of any gap between the secondary
seal and the separator wall exceeds 1.3 centimeters.
(vii) A gasket, joint, lid, cover, or door has a gap or crack, or
is broken.
(2) The owner or operator shall inspect for the control equipment
failures in paragraphs (e)(1)(i) through (e)(1)(vi) of this section
according to the schedule specified in paragraph (c) of this section.
(3) The owner or operator shall inspect for control equipment
failures in paragraph (e)(1)(vii) of this section initially, and semi-
annually thereafter.
(f) Except as provided in Sec. 63.140 of this subpart, when an
improper work practice or a control equipment failure is identified,
first efforts at repair shall be made no later than 5 calendar days
after identification and repair shall be completed within 45 calendar
days after identification.
Sec. 63.138 Process wastewater provisions--Performance standards for
treatment processes managing Group 1 wastewater streams and/or
residuals removed from Group 1 wastewater streams.
(a) General requirements. This section specifies the performance
standards for treating Group 1 wastewater streams. The owner or
operator shall comply with the requirements as specified in paragraphs
(a)(1) through (a)(6) of this section. Where multiple compliance
options are provided, the options may be used in combination for
different wastewater streams and/or for different compounds (e.g.,
Table 8 versus Table 9 compounds) in the same wastewater streams,
except where otherwise provided in this section. Once a Group 1
wastewater stream or residual removed from a Group 1 wastewater stream
has been treated in accordance with this subpart, it is no longer
subject to the requirements of this subpart.
(1) Existing source. If the wastewater stream, at an existing
source, is Group 1 for Table 9 compounds, comply with Sec. 63.138(b).
(2) New source. If the wastewater stream, at a new source, is Group
1 for Table 8 compounds, comply with Sec. 63.138(c). If the wastewater
stream, at a new source, is Group 1 for Table 9 compounds, comply with
Sec. 63.138(b). If the wastewater stream, at a new source, is Group 1
for Table 8 and Table 9 compounds, comply with both Sec. 63.138(b) and
Sec. 63.138(c).
Note to paragraph (a)(2): The requirements for Table 8 and/or
Table 9 compounds are similar and often identical.
(3) Biological treatment processes. Biological treatment processes
in compliance with this section may be either open or closed biological
treatment processes as defined in Sec. 63.111. An open biological
treatment process in compliance with this section need not be covered
and vented to a control device as required in Sec. 63.133 through
Sec. 63.137 of this subpart. An open or a closed biological treatment
process in compliance with this section and using Sec. 63.145(f) or
Sec. 63.145(g) of this subpart to demonstrate compliance is not subject
to the requirements of Sec. 63.133 through Sec. 63.137 of this subpart.
A closed biological treatment process in compliance with this section
and using Sec. 63.145(e) of this subpart to demonstrate compliance
shall comply with the requirements of Sec. 63.133 through Sec. 63.137
of this subpart. Waste management units upstream of an open or closed
biological treatment process shall meet the requirements of Sec. 63.133
through Sec. 63.137 of this subpart, as applicable.
(4) Performance tests and design evaluations. If design steam
stripper option (Sec. 63.138(d)) or Resource Conservation and Recovery
Act (RCRA) option (Sec. 63.138(h)) is selected to comply with this
section, neither a design evaluation nor a performance test is
required. For any other non-biological treatment process, and for
closed biological treatment processes as defined in Sec. 63.111 of this
subpart, the owner or operator shall conduct either a design evaluation
as specified in Sec. 63.138(j), or a performance test as specified in
Sec. 63.145, of this subpart. For each open biological treatment
[[Page 2758]]
process as defined in Sec. 63.111 of this subpart, the owner or
operator shall conduct a performance test as specified in Sec. 63.145
of this subpart.
Note to paragraph (a)(4): Some open biological treatment
processes may not require a performance test. Refer to
Sec. 63.145(h) and table 36 of this subpart to determine whether the
biological treatment process meets the criteria that exempt the
owner or operator from conducting a performance test.
(5) Control device requirements. When gases are vented from the
treatment process, the owner or operator shall comply with the
applicable control device requirements specified in Sec. 63.139 and
Sec. 63.145 (i) and (j), and the applicable leak inspection provisions
specified in Sec. 63.148, of this subpart. This requirement does not
apply to any open biological treatment process that meets the mass
removal requirements. Vents from anaerobic biological treatment
processes may be routed through hard-piping to a fuel gas system.
(6) Residuals: general. When residuals result from treating Group 1
wastewater streams, the owner or operator shall comply with the
requirements for residuals specified in Sec. 63.138(k) of this subpart.
(7) Treatment using a series of treatment processes. In all cases
where the wastewater provisions in this subpart allow or require the
use of a treatment process or control device to comply with emissions
limitations, the owner or operator may use multiple treatment processes
or control devices, respectively. For combinations of treatment
processes where the wastewater stream is conveyed by hard-piping, the
owner or operator shall comply with either the requirements of
paragraph (a)(7)(i) or (a)(7)(ii) of this section. For combinations of
treatment processes where the wastewater stream is not conveyed by
hard-piping, the owner or operator shall comply with the requirements
of paragraph (a)(7)(ii) of this section. For combinations of control
devices, the owner or operator shall comply with the requirements of
paragraph (a)(7)(i) of this section.
(i)(A) For combinations of treatment processes, the wastewater
stream shall be conveyed by hard-piping between the treatment
processes. For combinations of control devices, the vented gas stream
shall be conveyed by hard-piping between the control devices.
(B) For combinations of treatment processes, each treatment process
shall meet the applicable requirements of Sec. 63.133 through
Sec. 63.137 of this subpart except as provided in paragraph (a)(3) of
this section.
(C) The owner or operator shall identify, and keep a record of, the
combination of treatment processes or of control devices, including
identification of the first and last treatment process or control
device. The owner or operator shall include this information as part of
the treatment process description reported in the Notification of
Compliance Status.
(D) The performance test or design evaluation shall determine
compliance across the combination of treatment processes or control
devices. If a performance test is conducted, the ``inlet'' shall be the
point at which the wastewater stream or residual enters the first
treatment process, or the vented gas stream enters the first control
device. The ``outlet'' shall be the point at which the treated
wastewater stream exits the last treatment process, or the vented gas
stream exits the last control device.
(ii)(A) For combinations of treatment processes, each treatment
process shall meet the applicable requirements of Sec. 63.133 through
Sec. 63.137 of this subpart except as provided in paragraph (a)(3) of
this section.
(B) The owner or operator shall identify, and keep a record of, the
combination of treatment processes, including identification of the
first and last treatment process. The owner or operator shall include
this information as part of the treatment process description reported
in the Notification of Compliance Status.
(C) The owner or operator shall determine the mass removed or
destroyed by each treatment process. The performance test or design
evaluation shall determine compliance for the combination of treatment
processes by adding together the mass removed or destroyed by each
treatment process.
(b) Control options: Group 1 wastewater streams for Table 9
compounds. The owner or operator shall comply with either paragraph
(b)(1) or (b)(2) of this section for the control of Table 9 compounds
at new or existing sources.
(1) 50 ppmw concentration option. The owner or operator shall
comply with paragraphs (b)(1)(i) and (b)(1)(ii) of this section.
(i) Reduce, by removal or destruction, the total concentration of
Table 9 compounds to a level less than 50 parts per million by weight
as determined by the procedures specified in Sec. 63.145(b) of this
subpart.
(ii) This option shall not be used when the treatment process is a
biological treatment process. This option shall not be used when the
wastewater stream is designated as a Group 1 wastewater stream as
specified in Sec. 63.132(e). Dilution shall not be used to achieve
compliance with this option.
(2) Other compliance options. Comply with the requirements
specified in any one of paragraphs (d), (e), (f), (g), (h), or (i) of
this section.
(c) Control options: Group 1 wastewater streams for Table 8
compounds. The owner or operator shall comply with either paragraph
(c)(1) or (c)(2) of this section for the control of Table 8 compounds
at new sources.
(1) 10 ppmw concentration option. The owner or operator shall
comply with paragraphs (c)(1)(i) and (c)(1)(ii) of this section.
(i) Reduce, by removal or destruction, the concentration of the
individual Table 8 compounds to a level less than 10 parts per million
by weight as determined in the procedures specified in Sec. 63.145(b)
of this subpart.
(ii) This option shall not be used when the treatment process is a
biological treatment process. This option shall not be used when the
wastewater stream is designated as a Group 1 wastewater stream as
specified in Sec. 63.132(e). Dilution shall not be used to achieve
compliance with this option.
(2) Other compliance options. Comply with the requirements
specified in any one of paragraphs (d), (e), (f), (g), (h), or (i) of
this section.
(d) Design steam stripper option. The owner or operator shall
operate and maintain a steam stripper that meets the requirements of
paragraphs (d)(1) through (d)(6) of this section.
(1) Minimum active column height of 5 meters,
(2) Countercurrent flow configuration with a minimum of 10 actual
trays,
(3) Minimum steam flow rate of 0.04 kilograms of steam per liter of
wastewater feed within the column,
(4) Minimum wastewater feed temperature to the steam stripper of 95
deg.C, or minimum column operating temperature of 95 deg.C,
(5) Maximum liquid loading of 67,100 liters per hour per square
meter, and
(6) Operate at nominal atmospheric pressure.
(e) Percent mass removal/destruction option. The owner or operator
of a new or existing source shall comply with paragraph (e)(1) or
(e)(2) of this section for control of Table 8 and/or Table 9 compounds
for Group 1 wastewater streams. This option shall not be used for
biological treatment processes.
(1) Reduce mass flow rate of Table 8 and/or Table 9 compounds by 99
percent. For wastewater streams that are Group 1, the owner or operator
shall reduce, by removal or destruction, the
[[Page 2759]]
mass flow rate of Table 8 and/or Table 9 compounds by 99 percent or
more. The removal/destruction efficiency shall be determined by the
procedures specified in Sec. 63.145(c), for noncombustion processes, or
Sec. 63.145(d), for combustion processes.
(2) Reduce mass flow rate of Table 8 and/or Table 9 compounds by Fr
value. For wastewater streams that are Group 1 for Table 8 and/or Table
9 compounds, the owner or operator shall reduce, by removal or
destruction, the mass flow rate by at least the fraction removal (Fr)
values specified in Table 9 of this subpart. (The Fr values for Table 8
compounds are all 0.99.) The removal/destruction efficiency shall be
determined by the procedures specified in Sec. 63.145(c), for
noncombustion treatment processes, or Sec. 63.145(d), for combustion
treatment processes.
(f) Required mass removal (RMR) option. The owner or operator shall
achieve the required mass removal (RMR) of Table 8 compounds at a new
source for a wastewater stream that is Group 1 for Table 8 compounds
and/or of Table 9 compounds at a new or existing source for a
wastewater stream that is Group 1 for Table 9 compounds. For
nonbiological treatment processes compliance shall be determined using
the procedures specified in Sec. 63.145(e) of this subpart. For aerobic
biological treatment processes compliance shall be determined using the
procedures specified in Sec. 63.145 (e) or (f) of this subpart. For
closed anaerobic biological treatment processes compliance shall be
determined using the procedures specified in Sec. 63.145(e) of this
subpart. For open biological treatment processes compliance shall be
determined using the procedures specified in Sec. 63.145(f) of this
subpart.
(g) 95-percent RMR option, for biological treatment processes. The
owner or operator of a new or existing source using biological
treatment for at least one wastewater stream that is Group 1 for Table
9 compounds shall achieve a RMR of at least 95 percent for all Table 9
compounds. The owner or operator of a new source using biological
treatment for at least one wastewater stream that is Group 1 for Table
8 compounds shall achieve a RMR of at least 95 percent for all Table 8
compounds. All Group 1 and Group 2 wastewater streams entering a
biological treatment unit that are from chemical manufacturing process
units subject to subpart F shall be included in the demonstration of
the 95-percent mass removal. The owner or operator shall comply with
paragraphs (g)(1) through (g)(4) of this section.
(1) Except as provided in paragraph (g)(4) of this section, the
owner or operator shall ensure that all Group 1 and Group 2 wastewater
streams from chemical manufacturing process units subject to this rule
entering a biological treatment unit are treated to destroy at least
95-percent total mass of all Table 8 and/or Table 9 compounds.
(2) For open biological treatment processes compliance shall be
determined using the procedures specified in Sec. 63.145(g) of this
subpart. For closed aerobic biological treatment processes compliance
shall be determined using the procedures specified in Sec. 63.145 (e)
or (g) of this subpart. For closed anaerobic biological treatment
processes compliance shall be determined using the procedures specified
in Sec. 63.145(e) of this subpart.
(3) For each treatment process or waste management unit that
receives, manages, or treats wastewater streams subject to this
paragraph, from the point of determination of each Group 1 or Group 2
wastewater stream to the biological treatment unit, the owner or
operator shall comply with Secs. 63.133 through Sec. 63.137 of this
subpart for control of air emissions. When complying with this
paragraph, the term Group 1, whether used alone or in combination with
other terms, in Sec. 63.133 through Sec. 63.137 of this subpart shall
mean both Group 1 and Group 2.
(4) If a wastewater stream is in compliance with the requirements
in paragraph (b)(1), (c)(1), (d), (e), (f), or (h) of this section
before entering the biological treatment unit, the hazardous air
pollutants mass of that wastewater is not required to be included in
the total mass flow rate entering the biological treatment unit for the
purpose of demonstrating compliance.
(h) Treatment in a RCRA unit option. The owner or operator shall
treat the wastewater stream or residual in a unit identified in, and
complying with, paragraph (h)(1), (h)(2), or (h)(3) of this section.
These units are exempt from the design evaluation or performance tests
requirements specified in Sec. 63.138(a)(3) and Sec. 63.138(j) of this
subpart, and from the monitoring requirements specified in
Sec. 63.132(a)(2)(iii) and Sec. 63.132(b)(3)(iii) of this subpart, as
well as recordkeeping and reporting requirements associated with
monitoring and performance tests.
(1) The wastewater stream or residual is discharged to a hazardous
waste incinerator for which the owner or operator has been issued a
final permit under 40 CFR part 270 and complies with the requirements
of 40 CFR part 264, subpart O, or has certified compliance with the
interim status requirements of 40 CFR part 265, subpart O;
(2) The wastewater stream or residual is discharged to a process
heater or boiler burning hazardous waste for which the owner or
operator:
(i) Has been issued a final permit under 40 CFR part 270 and
complies with the requirements of 40 CFR part 266, subpart H; or
(ii) Has certified compliance with the interim status requirements
of 40 CFR part 266, subpart H.
(3) The wastewater stream or residual is discharged to an
underground injection well for which the owner or operator has been
issued a final permit under 40 CFR part 270 or 40 CFR part 144 and
complies with the requirements of 40 CFR part 122. The owner or
operator shall comply with all applicable requirements of this subpart
prior to the point where the wastewater enters the underground portion
of the injection well.
(i) One megagram total source mass flow rate option. A wastewater
stream is exempt from the requirements of paragraphs (b) and (c) of
this section if the owner or operator elects to comply with either
paragraph (i)(1) or (i)(2) of this section.
(1) All Group 1 wastewater streams at the source. The owner or
operator shall demonstrate that the total source mass flow rate for
Table 8 and/or Table 9 compounds is less than 1 megagram per year using
the procedures in paragraphs (i)(1)(i) and (i)(1)(ii) of this section.
The owner or operator shall include all Group 1 wastewater streams at
the source in the total source mass flow rate. The total source mass
flow rate shall be based on the mass as calculated before the
wastewater stream is treated.
(i) Calculate the annual average mass flow rate for each Group 1
wastewater stream by multiplying the annual average flow rate of the
wastewater stream, as determined by procedures specified in
Sec. 63.144(c), times the total annual average concentration of Table 8
and/or Table 9 compounds, as determined by procedures specified in
Sec. 63.144(b) of this subpart. (The mass flow rate of compounds in a
wastewater stream that is Group 1 for both Table 8 and Table 9
compounds should be included in the annual average mass flow rate only
once.)
(ii) Calculate the total source mass flow rate from all Group 1
wastewater streams by adding together the annual average mass flow rate
calculated for each Group 1 wastewater stream.
(2) Untreated and partially treated Group 1 wastewater streams. The
owner or operator shall demonstrate that the total source mass flow
rate for untreated
[[Page 2760]]
Group 1 wastewater streams and Group 1 wastewater streams treated to
levels less stringent than required in paragraph (b) or (c) of this
section is less than 1 megagram per year using the procedures in
paragraphs (i)(2)(i) and (i)(2)(ii) of this section. The owner or
operator shall manage these wastewater streams in accordance with
paragraph (i)(2)(iii) of this section, and shall comply with paragraph
(i)(2)(iv) of this section.
(i) Calculate the annual average mass flow rate in each wastewater
stream by multiplying the annual average flow rate of the wastewater
stream, as determined by procedures specified in Sec. 63.144(c), times
the total annual average concentration of Table 8 and/or Table 9
compounds, as determined by procedures specified in Sec. 63.144(b).
(The mass flow rate of compounds in a wastewater stream that are Group
1 for both Table 8 and Table 9 compounds should be included in the
annual average mass flow rate only once.)
(A) For each untreated Group 1 wastewater stream, the annual
average flow rate and the total annual average concentration shall be
determined for that stream's point of determination.
(B) For each Group 1 wastewater stream that is treated to levels
less stringent than those required by paragraph (b) or (c) of this
section, the annual average flow rate and total annual average
concentration shall be determined at the discharge from the treatment
process or series of treatment processes.
(C) The annual average mass flow rate for Group 1 wastewater
streams treated to the levels required by paragraph (b) or (c) of this
section is not included in the calculation of the total source mass
flow rate.
(ii) The total source mass flow rate shall be calculated by summing
the annual average mass flow rates from all Group 1 wastewater streams,
except those excluded by paragraph (i)(2)(i)(C) of this section.
(iii) The owner or operator of each waste management unit that
receives, manages, or treats the wastewater stream prior to or during
treatment shall comply with the requirements of Secs. 63.133 through
63.137 of this subpart, as applicable.
(iv) Wastewater streams included in this option shall be identified
in the Notification of Compliance Status required by Sec. 63.152(b).
(j) Design evaluations or performance tests for treatment
processes. Except as provided in paragraph (j)(3) or (h) of this
section, the owner or operator shall demonstrate by the procedures in
either paragraph (j)(1) or (j)(2) of this section that each
nonbiological treatment process used to comply with paragraphs (b)(1),
(c)(1), (e), and/or (f) of this section achieves the conditions
specified for compliance. The owner or operator shall demonstrate by
the procedures in either paragraph (j)(1) or (j)(2) of this section
that each closed biological treatment process used to comply with
paragraphs (f) or (g) of this section achieves the conditions specified
for compliance. If an open biological treatment unit is used to comply
with paragraph (f) or (g) of this section, the owner or operator shall
comply with Sec. 63.145(f) or Sec. 63.145(g), respectively, of this
subpart. Some biological treatment processes may not require a
performance test. Refer to Sec. 63.145(h) and table 36 of this subpart
to determine whether the open biological treatment process meets the
criteria that exempt the owner or operator from conducting a
performance test.
(1) A design evaluation and supporting documentation that addresses
the operating characteristics of the treatment process and that is
based on operation at a representative wastewater stream flow rate and
a concentration under which it would be most difficult to demonstrate
compliance. For closed biological treatment processes, the actual mass
removal shall be determined by a mass balance over the unit. The mass
flow rate of Table 8 or Table 9 compounds exiting the treatment process
shall be the sum of the mass flow rate of Table 8 or Table 9 compounds
in the wastewater stream exiting the biological treatment process and
the mass flow rate of the vented gas stream exiting the control device.
The mass flow rate entering the treatment process minus the mass flow
rate exiting the process determines the actual mass removal.
(2) Performance tests conducted using test methods and procedures
that meet the applicable requirements specified in Sec. 63.145 of this
subpart.
(3) The provisions of paragraphs (j)(1) and (j)(2) of this section
do not apply to design stream strippers which meet the requirements of
paragraph (d) of this section.
(k) Residuals. For each residual removed from a Group 1 wastewater
stream, the owner or operator shall control for air emissions by
complying with Secs. 63.133-137 of this subpart and by complying with
one of the provisions in paragraphs (k)(1) through (k)(4) of this
section.
(1) Recycle the residual to a production process or sell the
residual for the purpose of recycling. Once a residual is returned to a
production process, the residual is no longer subject to this section.
(2) Return the residual to the treatment process.
(3) Treat the residual to destroy the total combined mass flow rate
of Table 8 and/or Table 9 compounds by 99 percent or more, as
determined by the procedures specified in Sec. 63.145(c) or (d) of this
subpart.
(4) Comply with the requirements for RCRA treatment options
specified in Sec. 63.138(h) of this subpart.
Sec. 63.139 Process wastewater provisions--control devices.
(a) For each control device or combination of control devices used
to comply with the provisions in Secs. 63.133 through 63.138 of this
subpart, the owner or operator shall operate and maintain the control
device or combination of control devices in accordance with the
requirements of paragraphs (b) through (f) of this section.
(b) Whenever organic hazardous air pollutants emissions are vented
to a control device which is used to comply with the provisions of this
subpart, such control device shall be operating.
(c) The control device shall be designed and operated in accordance
with paragraph (c)(1), (c)(2), (c)(3), (c)(4), or (c)(5) of this
section.
(1) An enclosed combustion device (including but not limited to a
vapor incinerator, boiler, or process heater) shall meet the conditions
in paragraph (c)(1)(i), (c)(1)(ii), or (c)(1)(iii) of this section,
alone or in combination with other control devices. If a boiler or
process heater is used as the control device, then the vent stream
shall be introduced into the flame zone of the boiler or process
heater.
(i) Reduce the total organic compound emissions, less methane and
ethane, or total organic hazardous air pollutants emissions vented to
the control device by 95 percent by weight or greater;
(ii) Achieve an outlet total organic compound concentration, less
methane and ethane, or total organic hazardous air pollutants
concentration of 20 parts per million by volume on a dry basis
corrected to 3 percent oxygen. The owner or operator shall use either
Method 18 of 40 CFR part 60, appendix A, or any other method or data
that has been validated according to the applicable procedures in
Method 301 of appendix A of this part; or
(iii) Provide a minimum residence time of 0.5 seconds at a minimum
temperature of 760 deg. C.
(2) A vapor recovery system (including but not limited to a carbon
adsorption system or condenser), alone
[[Page 2761]]
or in combination with other control devices, shall reduce the total
organic compound emissions, less methane and ethane, or total organic
hazardous air pollutants emissions vented to the control device of 95
percent by weight or greater or achieve an outlet total organic
compound concentration, less methane and ethane, or total organic
hazardous air pollutants concentration of 20 parts per million by
volume, whichever is less stringent. The 20 parts per million by volume
performance standard is not applicable to compliance with the
provisions of Sec. 63.134 or Sec. 63.135 of this subpart.
(3) A flare shall comply with the requirements of Sec. 63.11(b) of
subpart A of this part.
(4) A scrubber, alone or in combination with other control devices,
shall reduce the total organic compound emissions, less methane and
ethane, or total organic hazardous air pollutants emissions in such a
manner that 95 weight-percent is either removed, or destroyed by
chemical reaction with the scrubbing liquid or achieve an outlet total
organic compound concentration, less methane and ethane, or total
organic hazardous air pollutants concentration of 20 parts per million
by volume, whichever is less stringent. The 20 parts per million by
volume performance standard is not applicable to compliance with the
provisions of Sec. 63.134 or Sec. 63.135 of this subpart.
(5) Any other control device used shall, alone or in combination
with other control devices, reduce the total organic compound
emissions, less methane and ethane, or total organic hazardous air
pollutants emissions vented to the control device by 95 percent by
weight or greater or achieve an outlet total organic compound
concentration, less methane and ethane, or total organic hazardous air
pollutants concentration of 20 parts per million by volume, whichever
is less stringent. The 20 parts per million by volume performance
standard is not applicable to compliance with the provisions of
Sec. 63.134 or Sec. 63.135 of this subpart.
(d) Except as provided in paragraph (d)(4) of this section, an
owner or operator shall demonstrate that each control device or
combination of control devices achieves the appropriate conditions
specified in paragraph (c) of this section by using one or more of the
methods specified in paragraphs (d)(1), (d)(2), or (d)(3) of this
section.
(1) Performance tests conducted using the test methods and
procedures specified in Sec. 63.145(i) of this subpart for control
devices other than flares; or
(2) A design evaluation that addresses the vent stream
characteristics and control device operating parameters specified in
paragraphs (d)(2)(i) through (d)(2)(vii) of this section.
(i) For a thermal vapor incinerator, the design evaluation shall
consider the vent stream composition, constituent concentrations, and
flow rate and shall establish the design minimum and average
temperature in the combustion zone and the combustion zone residence
time.
(ii) For a catalytic vapor incinerator, the design evaluation shall
consider the vent stream composition, constituent concentrations, and
flow rate and shall establish the design minimum and average
temperatures across the catalyst bed inlet and outlet.
(iii) For a boiler or process heater, the design evaluation shall
consider the vent stream composition, constituent concentrations, and
flow rate; shall establish the design minimum and average flame zone
temperatures and combustion zone residence time; and shall describe the
method and location where the vent stream is introduced into the flame
zone.
(iv) For a condenser, the design evaluation shall consider the vent
stream composition, constituent concentrations, flow rate, relative
humidity, and temperature and shall establish the design outlet organic
compound concentration level, design average temperature of the
condenser exhaust vent stream, and the design average temperatures of
the coolant fluid at the condenser inlet and outlet.
(v) For a carbon adsorption system that regenerates the carbon bed
directly on-site in the control device such as a fixed-bed adsorber,
the design evaluation shall consider the vent stream composition,
constituent concentrations, flow rate, relative humidity, and
temperature and shall establish the design exhaust vent stream organic
compound concentration level, adsorption cycle time, number and
capacity of carbon beds, type and working capacity of activated carbon
used for carbon beds, design total regeneration stream mass or
volumetric flow over the period of each complete carbon bed
regeneration cycle, design carbon bed temperature after regeneration,
design carbon bed regeneration time, and design service life of carbon.
(vi) For a carbon adsorption system that does not regenerate the
carbon bed directly on-site in the control device such as a carbon
canister, the design evaluation shall consider the vent stream
composition, constituent concentrations, mass or volumetric flow rate,
relative humidity, and temperature and shall establish the design
exhaust vent stream organic compound concentration level, capacity of
carbon bed, type and working capacity of activated carbon used for
carbon bed, and design carbon replacement interval based on the total
carbon working capacity of the control device and source operating
schedule.
(vii) For a scrubber, the design evaluation shall consider the vent
stream composition; constituent concentrations; liquid-to-vapor ratio;
scrubbing liquid flow rate and concentration; temperature; and the
reaction kinetics of the constituents with the scrubbing liquid. The
design evaluation shall establish the design exhaust vent stream
organic compound concentration level and will include the additional
information in paragraphs (d)(2)(vii)(A) and (d)(2)(vii)(B) of this
section for trays and a packed column scrubber.
(A) Type and total number of theoretical and actual trays;
(B) Type and total surface area of packing for entire column, and
for individual packed sections if column contains more than one packed
section.
(3) For flares, the compliance determination specified in
Sec. 63.11(b) of subpart A of this part and Sec. 63.145(j) of this
subpart.
(4) An owner or operator using any control device specified in
paragraphs (d)(4)(i) through (d)(4)(iv) of this section is exempt from
the requirements in paragraphs (d)(1) through (d)(3) of this section
and from the requirements in Sec. 63.6(f) of subpart A of this part.
(i) A boiler or process heater with a design heat input capacity of
44 megawatts or greater.
(ii) A boiler or process heater into which the emission stream is
introduced with the primary fuel.
(iii) A boiler or process heater burning hazardous waste for which
the owner or operator:
(A) Has been issued a final permit under 40 CFR part 270 and
complies with the requirements of 40 CFR part 266, subpart H, or
(B) Has certified compliance with the interim status requirements
of 40 CFR part 266, subpart H.
(iv) A hazardous waste incinerator for which the owner or operator
has been issued a final permit under 40 CFR part 270 and complies with
the requirements of 40 CFR part 264, subpart O, or has certified
compliance with the interim status requirements of 40 CFR part 265,
subpart O.
(e) The owner or operator of a control device that is used to
comply with the provisions of this section shall monitor the control
device in accordance with Sec. 63.143 of this subpart.
[[Page 2762]]
(f) Except as provided in Sec. 63.140 of this subpart, if gaps,
cracks, tears, or holes are observed in ductwork, piping, or
connections to covers and control devices during an inspection, a first
effort to repair shall be made as soon as practical but no later than 5
calendar days after identification. Repair shall be completed no later
than 15 calendar days after identification or discovery of the defect.
Sec. 63.140 Process wastewater provisions--delay of repair.
(a) Delay of repair of equipment for which a control equipment
failure or a gap, crack, tear, or hole has been identified, is allowed
if the repair is technically infeasible without a shutdown, as defined
in Sec. 63.101 of subpart F of this part, or if the owner or operator
determines that emissions of purged material from immediate repair
would be greater than the emissions likely to result from delay of
repair. Repair of this equipment shall occur by the end of the next
shutdown.
(b) Delay of repair of equipment for which a control equipment
failure or a gap, crack, tear, or hole has been identified, is allowed
if the equipment is emptied or is no longer used to treat or manage
Group 1 wastewater streams or residuals removed from Group 1 wastewater
streams.
(c) Delay of repair of equipment for which a control equipment
failure or a gap, crack, tear, or hole has been identified is also
allowed if additional time is necessary due to the unavailability of
parts beyond the control of the owner or operator. Repair shall be
completed as soon as practical. The owner or operator who uses this
provision shall comply with the requirements of Sec. 63.147(c)(7) to
document the reasons that the delay of repair was necessary.
Sec. 63.141 Reserved.
Sec. 63.142 Reserved.
Sec. 63.143 Process wastewater provisions--inspections and monitoring
of operations.
(a) For each wastewater tank, surface impoundment, container,
individual drain system, and oil-water separator that receives,
manages, or treats a Group 1 wastewater stream, a residual removed from
a Group 1 wastewater stream, a recycled Group 1 wastewater stream, or a
recycled residual removed from a Group 1 wastewater stream, the owner
or operator shall comply with the inspection requirements specified in
table 11 of this subpart.
(b) For each design steam stripper and biological treatment unit
used to comply with Sec. 63.138 of this subpart, the owner or operator
shall comply with the monitoring requirements specified in table 12 of
this subpart.
(c) If the owner or operator elects to comply with Item 1 in table
12 of this subpart, the owner or operator shall request approval to
monitor appropriate parameters that demonstrate proper operation of the
biological treatment unit. The request shall be submitted according to
the procedures specified in Sec. 63.151(f) of this subpart, and shall
include a discription of planned reporting and recordkeeping
procedures. The owner or operator shall include as part of the
submittal the basis for the selected monitoring frequencies and the
methods that will be used. The Administrator will specify appropriate
reporting and recordkeeping requirements as part of the review of the
permit application or by other appropriate means.
(d) If the owner or operator elects to comply with Item 3 in table
12 of this subpart, the owner or operator shall request approval to
monitor appropriate parameters that demonstrate proper operation of the
selected treatment process. The request shall be submitted according to
the procedures specified in Sec. 63.151(f) of this subpart, and shall
include a description of planned reporting and recordkeeping
procedures. The Administrator will specify appropriate reporting and
recordkeeping requirements as part of the review of the permit
application or by other appropriate means.
(e) Except as provided in paragraphs (e)(4) and (e)(5) of this
section, for each control device used to comply with the requirements
of Secs. 63.133 through 63.139 of this subpart, the owner or operator
shall comply with the requirements in Sec. 63.139(d) of this subpart,
and with the requirements specified in paragraph (e)(1), (e)(2), or
(e)(3) of this section.
(1) The owner or operator shall comply with the monitoring
requirements specified in table 13 of this subpart; or
(2) The owner or operator shall use an organic monitoring device
installed at the outlet of the control device and equipped with a
continuous recorder. Continuous recorder is defined in Sec. 63.111 of
this subpart; or
(3) The owner or operator shall request approval to monitor
parameters other than those specified in paragraphs (e)(1) and (e)(2)
of this section. The request shall be submitted according to the
procedures specified in Sec. 63.151(f) of this subpart, and shall
include a description of planned reporting and recordkeeping
procedures. The Administrator will specify appropriate reporting and
recordkeeping requirements as part of the review of the permit
application or by other appropriate means.
(4) For a boiler or process heater in which all vent streams are
introduced with primary fuel, the owner or operator shall comply with
the requirements in Sec. 63.139(d) of this subpart but the owner or
operator is exempt from the monitoring requirements specified in
paragraphs (e)(1) through (e)(3) of this section.
(5) For a boiler or process heater with a design heat input
capacity of 44 megawatts or greater, the owner or operator shall comply
with the requirements in Sec. 63.139(d) of this subpart but the owner
or operator is exempt from the monitoring requirements specified in
paragraphs (e)(1) through (e)(3) of this section.
(f) For each parameter monitored in accordance with paragraph (c),
(d), or (e) of this section, the owner or operator shall establish a
range that indicates proper operation of the treatment process or
control device. In order to establish the range, the owner or operator
shall comply with the requirements specified in
Secs. 63.146(b)(7)(ii)(A) and (b)(8)(ii) of this subpart.
(g) Monitoring equipment shall be installed, calibrated, and
maintained according to the manufacturer's specifications or other
written procedures that provide adequate assurance that the equipment
would reasonably be expected to monitor accurately.
Sec. 63.144 Process wastewater provisions--test methods and procedures
for determining applicability and Group 1/Group 2 determinations
(determining which wastewater streams require control).
(a) Procedures to determine applicability. An owner or operator
shall comply with paragraph (a)(1) or (a)(2) of this section for each
wastewater stream to determine which wastewater streams require control
for Table 8 and/or Table 9 compounds. The owner or operator may use a
combination of the approaches in paragraphs (a)(1) and (a)(2) of this
section for different wastewater streams generated at the source.
(1) Determine Group 1 or Group 2 status. Determine whether a
wastewater stream is a Group 1 or Group 2 wastewater stream in
accordance with paragraphs (b) and (c) of this section.
(2) Designate as Group 1. An owner or operator may designate as a
Group 1 wastewater stream a single wastewater stream or a mixture of
wastewater streams. The owner or operator is not
[[Page 2763]]
required to determine the concentration or flow rate for each
designated Group 1 wastewater stream for the purposes of this section.
(b) Procedures to establish concentrations, when determining Group
status under paragraph (a)(1) of this section. An owner or operator who
elects to comply with the requirements of paragraph (a)(1) of this
section shall determine the annual average concentration for Table 8
and/or Table 9 compounds according to paragraph (b)(1) of this section
for existing sources or paragraph (b)(2) of this section for new
sources. The annual average concentration shall be a flow weighted
average representative of actual or anticipated operation of the
chemical manufacturing process unit generating the wastewater over a
designated 12 month period. For flexible operation units, the owner or
operator shall consider the anticipated production over the designated
12 month period and include all wastewater streams generated by the
process equipment during this period. The owner/operator is not
required to determine the concentration of Table 8 or Table 9 compounds
that are not reasonably expected to be in the process.
(1) Existing sources. An owner or operator of an existing source
who elects to comply with the requirements of paragraph (a)(1) of this
section shall determine the flow weighted total annual average
concentration for Table 9 compounds. For the purposes of this section,
the term concentration, whether concentration is used alone or with
other terms, may be adjusted by multiplying by the compound-specific
fraction measured (Fm) factors listed in table 34 of this subpart
unless determined by the methods in Sec. 63.144(b)(5)(i)(A) and/or (B).
When concentration is determined by Method 305 as specified in
Sec. 63.144(b)(5)(i)(B), concentration may be adjusted by dividing by
the compound-specific Fm factors listed in table 34 of this subpart.
When concentration is determined by Method 25D as specified in
Sec. 63.144(b)(5)(i)(A), concentration may not be adjusted by the
compound-specific Fm factors listed in table 34 of this subpart.
Compound-specific Fm factors may be used only when concentrations of
individual compounds are determined or when only one compound is in the
wastewater stream. Flow weighted total annual average concentration for
Table 9 compounds means the total mass of Table 9 compounds occurring
in the wastewater stream during the designated 12-month period divided
by the total mass of the wastewater stream during the same designated
12-month period. The total annual average concentration shall be
determined for each wastewater stream either at the point of
determination, or downstream of the point of determination with
adjustment for concentration changes made according to paragraph (b)(6)
of this section. The procedures specified in paragraphs (b)(3), (b)(4),
and (b)(5) of this section are considered acceptable procedures for
determining the annual average concentration. They may be used in
combination, and no one procedure shall take precedence over another.
(2) New sources. An owner or operator of a new source who elects to
comply with the requirements of paragraph (a)(1) of this section shall
determine both the flow weighted total annual average concentration for
Table 9 compounds and the flow weighted annual average concentration
for each Table 8 compound. For the purposes of this section, the term
concentration, whether concentration is used alone or with other terms,
may be adjusted by multiplying by the compound-specific Fm factors
listed in table 34 of this subpart unless determined by the methods in
Sec. 63.144(b)(5)(i)(A) and/or (B). When concentration is determined by
Method 305 as specified in Sec. 63.144(b)(5)(i)(B), concentration may
be adjusted by dividing by the compound-specific Fm factors listed in
table 34 of this subpart. When concentration is determined by Method
25D as specified in Sec. 63.144(b)(5)(i)(A), concentration may not be
adjusted by the compound-specific Fm factors listed in table 34 of this
subpart. Compound-specific fraction measured factors are compound
specific and shall be used only when concentration of individual
compounds are determined or when only one compound is in the wastewater
stream. The flow weighted annual average concentration of each Table 8
compound means the mass of each Table 8 compound occurring in the
wastewater stream during the designated 12-month period divided by the
total mass of the wastewater stream during the same designated 12-month
period. Flow weighted total annual average concentration for Table 9
compounds means the total mass of Table 9 compounds occurring in the
wastewater stream during the designated 12-month period divided by the
total mass of the wastewater stream during the same designated 12-month
period. The annual average concentration shall be determined for each
wastewater stream either at the point of determination, or downstream
of the point of determination with adjustment for concentration changes
made according to paragraph (b)(6) of this section. Procedures
specified in paragraphs (b)(3), (b)(4), and (b)(5) of this section are
considered acceptable procedures for determining the annual average
concentration. They may be used in combination, and no one procedure
shall take precedence over another.
(3) Knowledge of the wastewater. Where knowledge is used to
determine the annual average concentration, the owner or operator shall
provide sufficient information to document the annual average
concentration for wastewater streams determined to be Group 2
wastewater streams. Documentation to determine the annual average
concentration is not required for Group 1 streams. Examples of
acceptable documentation include material balances, records of chemical
purchases, process stoichiometry, or previous test results. If test
data are used, the owner or operator shall provide documentation
describing the testing protocol and the means by which any losses of
volatile compounds during sampling, and the bias and accuracy of the
analytical method, were accounted for in the determination.
(4) Bench-scale or pilot-scale test data. Where bench-scale or
pilot-scale test data are used to determine the annual average
concentration, the owner or operator shall provide sufficient
information to document that the data are representative of the actual
annual average concentration, or are reliably indicative of another
relevant characteristic of the wastewater stream that could be used to
predict the annual average concentration. For concentration data, the
owner or operator shall also provide documentation describing the
testing protocol, and the means by which any losses of volatile
compounds during sampling, and the bias and accuracy of the analytical
method, were accounted for in the determination of annual average
concentration.
(5) Test data from sampling at the point of determination or at a
location downstream of the point of determination. Where an owner or
operator elects to comply with paragraph (a)(1) of this section by
measuring the concentration for the relevant Table 8 or Table 9
compounds, the owner or operator shall comply with the requirements of
this paragraph. For each wastewater stream, measurements shall be made
either at the point of determination, or downstream of the point of
determination with adjustment for concentration changes made
[[Page 2764]]
according to paragraph (b)(6) of this section. A minimum of three
samples from each wastewater stream shall be taken. Samples may be grab
samples or composite samples.
(i) Methods. The owner or operator shall use any of the methods
specified in paragraphs (b)(5)(i)(A) through (b)(5)(i)(F) of this
section.
(A) Method 25D. Use procedures specified in Method 25D of 40 CFR
part 60, appendix A.
(B) Method 305. Use procedures specified in Method 305 of 40 CFR
part 63, appendix A.
(C) Methods 624 and 625. Use procedures specified in Methods 624
and 625 of 40 CFR part 136, appendix A and comply with the sampling
protocol requirements specified in paragraph (b)(5)(ii) of this
section. If these methods are used to analyze one or more compounds
that are not on the method's published list of approved compounds, the
Alternative Test Procedure specified in 40 CFR 136.4 and 136.5 shall be
followed. For Method 625, make corrections to the compounds for which
the analysis is being conducted based on the accuracy as recovery
factors in Table 7 of the method.
(D) Method 1624 and Method 1625. Use procedures specified in Method
1624 and Method 1625 of 40 CFR part 136, appendix A and comply with the
requirements specified in paragraph (b)(5)(ii) of this section. If
these methods are used to analyze one or more compounds that are not on
the method's published list of approved compounds, the Alternative Test
Procedure specified in 40 CFR 136.4 and 136.5 shall be followed.
(E) Other EPA method(s). Use procedures specified in the method and
comply with the requirements specified in paragraphs (b)(5)(ii) and
either paragraph (b)(5)(iii)(A) or (b)(5)(iii)(B) of this section.
(F) Method(s) other than EPA method. Use procedures specified in
the method and comply with the requirements specified in paragraphs
(b)(5)(ii) and (b)(5)(iii)(A) of this section.
(ii) Sampling plan. The owner or operator who is expressly referred
to this paragraph by provisions of this subpart shall prepare a
sampling plan. Wastewater samples shall be collected using sampling
procedures which minimize loss of organic compounds during sample
collection and analysis and maintain sample integrity. The sample plan
shall include procedures for determining recovery efficiency of the
relevant hazardous air pollutants listed in table 8 or table 9 of this
subpart. An example of an acceptable sampling plan would be one that
incorporates similar sampling and sample handling requirements to those
of Method 25D of 40 CFR part 60, appendix A. The sampling plan shall be
maintained at the facility.
(iii) Validation of methods. The owner or operator shall validate
EPA methods other than Methods 25D, 305, 624, 625, 1624, and 1625 using
the procedures specified in paragraph (b)(5)(iii)(A) or (b)(5)(iii)(B)
of this section. The owner or operator shall validate other methods as
specified in paragraph (b)(5)(iii)(A) of this section.
(A) Validation of EPA methods and other methods. The method used to
measure organic hazardous air pollutants concentrations in the
wastewater shall be validated according to section 5.1 or 5.3, and the
corresponding calculations in section 6.1 or 6.3, of Method 301 of
appendix A of this part. The data are acceptable if they meet the
criteria specified in section 6.1.5 or 6.3.3 of Method 301 of appendix
A of this part. If correction is required under section 6.3.3 of Method
301 of appendix A of this part, the data are acceptable if the
correction factor is within the range 0.7 to 1.30. Other sections of
Method 301 of appendix A of this part are not required. The
concentrations of the individual organic hazardous air pollutants
measured in the water may be corrected to their concentrations had they
been measured by Method 305 of appendix A of this part, by multiplying
each concentration by the compound-specific fraction measured (Fm)
factor listed in table 34 of this subpart.
(B) Validation for EPA methods. Follow the procedures as specified
in ``Alternative Validation Procedure for EPA Waste Methods'' 40 CFR
part 63, appendix D.
(iv) Calculations of average concentration. The average
concentration for each individually speciated Table 8 compound shall be
calculated by adding the individual values determined for the specific
compound in each sample and dividing by the number of samples. The
total average concentration of Table 9 compounds shall be calculated by
first summing the concentration of the individual compounds to obtain a
total hazardous air pollutants concentration for the sample; add the
sample totals and then divide by the number of samples in the run to
obtain the sample average for the run. If the method used does not
speciate the compounds, the sample results should be added and this
total divided by the number of samples in the run to obtain the sample
average for the run.
(6) Adjustment for concentrations determined downstream of the
point of determination. The owner or operator shall make corrections to
the annual average concentration or total annual average concentration
when the concentration is determined downstream of the point of
determination at a location where: two or more wastewater streams have
been mixed; one or more wastewater streams have been treated; or,
losses to the atmosphere have occurred. The owner or operator shall
make the adjustments either to the individual data points or to the
final annual average concentration.
(c) Procedures to determine flow rate, when evaluating Group status
under paragraph (a)(1) of this section. An owner or operator who elects
to comply with paragraph (a)(1) of this section shall determine the
annual average flow rate of the wastewater stream either at the point
of determination for each wastewater stream, or downstream of the point
of determination with adjustment for flow rate changes made according
to paragraph (c)(4) of this section. These procedures may be used in
combination for different wastewater streams at the source. The annual
average flow rate for the wastewater stream shall be representative of
actual or anticipated operation of the chemical manufacturing process
unit generating the wastewater over a designated 12-month period. The
owner or operator shall consider the total annual wastewater volume
generated by the chemical manufacturing process unit. If the chemical
manufacturing process unit is a flexible operation unit, the owner or
operator shall consider all anticipated production in the process
equipment over the designated 12-month period. The procedures specified
in paragraphs (c)(1), (c)(2), and (c)(3) of this section are considered
acceptable procedures for determining the flow rate. They may be used
in combination, and no one procedure shall take precedence over
another.
(1) Knowledge of the wastewater. The owner or operator may use
knowledge of the wastewater stream and/or the process to determine the
annual average flow rate. The owner or operator shall use the maximum
expected annual average production capacity of the process unit,
knowledge of the process, and/or mass balance information to either:
Estimate directly the annual average wastewater flow rate; or estimate
the total annual wastewater volume and then divide total volume by
525,600 minutes in a year. Where knowledge is used to determine the
[[Page 2765]]
annual average flow rate, the owner or operator shall provide
sufficient information to document the flow rate for wastewater streams
determined to be Group 2 wastewater streams. Documentation to determine
the annual average flow rate is not required for Group 1 streams.
(2) Historical Records. The owner or operator may use historical
records to determine the annual average flow rate. Derive the highest
annual average flow rate of wastewater from historical records
representing the most recent 5 years of operation or, if the process
unit has been in service for less than 5 years but at least 1 year,
from historical records representing the total operating life of the
process unit. Where historical records are used to determine the annual
average flow rate, the owner or operator shall provide sufficient
information to document the flow rate for wastewater streams determined
to be Group 2 wastewater streams. Documentation to determine the annual
average flow rate is not required for Group 1 streams.
(3) Measurements of flow rate. Where an owner or operator elects to
comply with paragraph (a)(1) of this section by measuring the flow
rate, the owner or operator shall comply with the requirements of this
paragraph. Measurements shall be made at the point of determination, or
at a location downstream of the point of determination with adjustments
for flow rate changes made according to paragraph (c)(4) of this
section. Where measurement data are used to determine the annual
average flow rate, the owner or operator shall provide sufficient
information to document the flow rate for wastewater streams determined
to be Group 2 wastewater streams. Documentation to determine the annual
average flow rate is not required for Group 1 streams.
(4) Adjustment for flow rates determined downstream of the point of
determination. The owner or operator shall make corrections to the
annual average flow rate of a wastewater stream when it is determined
downstream of the point of determination at a location where two or
more wastewater streams have been mixed or one or more wastewater
streams have been treated. The owner or operator shall make corrections
for such changes in the annual average flow rate.
Sec. 63.145 Process wastewater provisions--test methods and procedures
to determine compliance.
(a) General. This section specifies the procedures for performance
tests that are conducted to demonstrate compliance of a treatment
process or a control device with the control requirements specified in
Sec. 63.138 of this subpart. Owners or operators conducting a design
evaluation shall comply with the requirements of paragraph (a)(1) or
(a)(2) of this section. Owners or operators conducting a performance
test shall comply with the applicable requirements in paragraphs (a)
through (i) of this section.
(1) Performance tests and design evaluations for treatment
processes. If design steam stripper option (Sec. 63.138(d)) or RCRA
option (Sec. 63.138(h)) is selected to comply with Sec. 63.138, neither
a design evaluation nor a performance test is required. For any other
non-biological treatment process, the owner or operator shall conduct
either a design evaluation as specified in Sec. 63.138(j), or a
performance test as specified in this section. For closed biological
treatment processes, the owner or operator shall conduct either a
design evaluation as specified in Sec. 63.138(j), or a performance test
as specified in this section. For each open biological treatment
process, the owner or operator shall conduct a performance test as
specified in this section.
Note: Some open biological treatment processes may not require a
performance test. Refer to Sec. 63.145(h) and table 36 of this
subpart to determine whether the biological treatment process meets
the criteria that exempt the owner or operator from conducting a
performance test.
(2) Performance tests and design evaluations for control devices.
The owner or operator shall conduct either a design evaluation as
specified in Sec. 63.139(d), or a performance test as specified in
paragraph (i) of this section for control devices other than flares and
paragraph (j) of this section for flares.
(3) Representative process unit operating conditions. Compliance
shall be demonstrated for representative operating conditions.
Operations during periods of startup, shutdown, or malfunction and
periods of nonoperation shall not constitute representative conditions.
The owner or operator shall record the process information that is
necessary to document operating conditions during the test.
(4) Representative treatment process or control device operating
conditions. Performance tests shall be conducted when the treatment
process or control device is operating at a representative inlet flow
rate and concentration. If the treatment process or control device will
be operating at several different sets of representative operating
conditions, the owner or operator shall comply with paragraphs
(a)(4)(i) and (a)(4)(ii) of this section. The owner or operator shall
record information that is necessary to document treatment process or
control device operating conditions during the test.
(i) Range of operating conditions. If the treatment process or
control device will be operated at several different sets of
representative operating conditions, performance testing over the
entire range is not required. In such cases, the performance test
results shall be supplemented with modeling and/or engineering
assessments to demonstrate performance over the operating range.
(ii) Consideration of residence time. If concentration and/or flow
rate to the treatment process or control device are not relatively
constant (i.e., comparison of inlet and outlet data will not be
representative of performance), the owner or operator shall consider
residence time, when determining concentration and flow rate.
(5) Testing equipment. All testing equipment shall be prepared and
installed as specified in the applicable test methods, or as approved
by the Administrator.
(6) Compounds not required to be considered in performance tests or
design evaluations. Compounds that meet the requirements specified in
paragraph (a)(6)(i), (a)(6)(ii), or (a)(6)(iii) of this section are not
required to be included in the performance test. Concentration
measurements based on Method 305 shall be adjusted by dividing each
concentration by the compound-specific Fm factor listed in table 34 of
this subpart. Concentration measurements based on methods other than
Method 305 shall not be adjusted by the compound-specific Fm factor
listed in table 34 of this subpart.
(i) Compounds not used or produced by the chemical manufacturing
process unit; or
(ii) Compounds with concentrations at the point of determination
that are below 1 part per million by weight; or
(iii) Compounds with concentrations at the point of determination
that are below the lower detection limit where the lower detection
limit is greater than 1 part per million by weight. The method shall be
an analytical method for wastewater which has that compound as a target
analyte.
(7) Treatment using a series of treatment processes. In all cases
where the wastewater provisions in this subpart allow or require the
use of a treatment process to comply with emissions limitations, the
owner or operator may use multiple treatment processes. The owner or
operator complying with the requirements of Sec. 63.138(a)(7)(i), when
wastewater is
[[Page 2766]]
conveyed by hard-piping, shall comply with either Sec. 63.145(a)(7)(i)
or Sec. 63.145(a)(7)(ii) of this subpart. The owner or operator
complying with the requirements of Sec. 63.138(a)(7)(ii) of this
subpart shall comply with the requirements of Sec. 63.145(a)(7)(ii) of
this subpart.
(i) The owner or operator shall conduct the performance test across
each series of treatment processes. For each series of treatment
processes, inlet concentration and flow rate shall be measured either
where the wastewater stream enters the first treatment process in a
series of treatment processes, or prior to the first treatment process
as specified in Sec. 63.145(a)(9) of this subpart. For each series of
treatment processes, outlet concentration and flow rate shall be
measured where the wastewater stream exits the last treatment process
in the series of treatment processes, except when the last treatment
process is an open or a closed aerobic biological treatment process
demonstrating compliance by using the procedures in Sec. 63.145 (f) or
(g) of this subpart. When the last treatment process is either an open
or a closed aerobic biological treatment process demonstrating
compliance by using the procedures in Sec. 63.145 (f) or (g) of this
subpart, inlet and outlet concentrations and flow rates shall be
measured as provided in paragraphs (a)(7)(i)(A) and (a)(7)(i)(B) of
this section. The mass flow rates removed or destroyed by the series of
treatment processes and by the biological treatment process are all
used to calculate actual mass removal (AMR) as specified in
Sec. 63.145(f)(5)(ii) of this subpart.
(A) The inlet and outlet to the series of treatment processes prior
to the biological treatment process are the points at which the
wastewater enters the first treatment process and exits the last
treatment process in the series, respectively, except as provided in
paragraph (a)(9)(ii) of this section.
(B) The inlet to the biological treatment process shall be the
point at which the wastewater enters the biological treatment process
or the outlet from the series of treatment processes identified in
paragraph (a)(7)(i)(A) of this section, except as provided in paragraph
(a)(9)(ii) of this section.
(ii) The owner or operator shall conduct the performance test
across each treatment process in the series of treatment processes. The
mass flow rate removed or destroyed by each treatment process shall be
added together to determine whether compliance has been demonstrated
using Sec. 63.145 (c), (d), (e), (f), and (g), as applicable. If a
biological treatment process is one of the treatment processes in the
series of treatment processes, the inlet to the biological treatment
process shall be the point at which the wastewater enters the
biological treatment process, or the inlet to the equalization tank if
all the criteria of paragraph (a)(9)(ii) of this section are met.
(8) When using a biological treatment process to comply with
Sec. 63.138 of this subpart, the owner or operator may elect to
calculate the AMR using a subset of Table 8 and/or Table 9 compounds
determined at the point of determination or downstream of the point of
determination with adjustment for concentration and flowrate changes
made according to Sec. 63.144(b)(6) and Sec. 63.144(c)(4) of this
subpart, respectively. All Table 8 and/or Table 9 compounds measured to
determine the RMR, except as provided by Sec. 63.145(a)(6), shall be
included in the RMR calculation.
(9) The owner or operator determining the inlet for purposes of
demonstrating compliance with Sec. 63.145 (e), (f), or (g) of this
subpart may elect to comply with paragraph (a)(9)(i) or (a)(9)(ii) of
this section.
(i) When wastewater is conveyed exclusively by hard-piping from the
point of determination to a treatment process that is either the only
treatment process or the first in a series of treatment processes
(i.e., no treatment processes or other waste management units are used
upstream of this treatment process to store, handle, or convey the
wastewater), the inlet to the treatment process shall be at any
location from the point of determination to where the wastewater stream
enters the treatment process. When samples are taken upstream of the
treatment process and before wastewater streams have converged, the
owner or operator shall ensure that the mass flow rate of all Group 1
wastewater streams is accounted for when using Sec. 63.138 (e) or (f)
to comply and that the mass flow rate of all Group 1 and Group 2
wastewater streams is accounted for when using Sec. 63.138(g) to
comply, except as provided in Sec. 63.145(a)(6).
(ii) The owner or operator may consider the inlet to the
equalization tank as the inlet to the biological treatment process if
all the criteria in paragraphs (a)(9)(ii)(A) through (a)(9)(ii)(C) of
this section are met. The outlet from the series of treatment processes
prior to the biological treatment process is the point at which the
wastewater exits the last treatment process in the series prior to the
equalization tank, if the equalization tank and biological treatment
process are part of a series of treatment processes. The owner or
operator shall ensure that the mass flow rate of all Group 1 wastewater
streams is accounted for when using Sec. 63.138 (e) or (f) to comply
and that the mass flow rate of all Group 1 and Group 2 wastewater
streams is accounted for when using Sec. 63.138(g) to comply, except as
provided in Sec. 63.145(a)(6).
(A) The wastewater is conveyed by hard-piping from either the last
previous treatment process or the point of determination to the
equalization tank.
(B) The wastewater is conveyed from the equalization tank
exclusively by hard-piping to the biological treatment process and no
treatment processes or other waste management units are used to store,
handle, or convey the wastewater between the equalization tank and the
biological treatment process.
(C) The equalization tank is equipped with a fixed roof and a
closed vent system that routes emissions to a control device that meets
the requirements of Sec. 63.133(a)(2)(i) and Sec. 63.133 (b)(1) through
(b)(4) of this subpart.
(b) Noncombustion treatment process--concentration limits. This
paragraph applies to performance tests that are conducted to
demonstrate compliance of a noncombustion treatment process with the
parts per million by weight wastewater stream concentration limits at
the outlet of the treatment process. This compliance option is
specified in Sec. 63.138(b)(1) and Sec. 63.138(c)(1). Wastewater
samples shall be collected using sampling procedures which minimize
loss of organic compounds during sample collection and analysis and
maintain sample integrity per Sec. 63.144(b)(5)(ii). Samples shall be
collected and analyzed using the procedures specified in Sec. 63.144
(b)(5)(i), (b)(5)(ii), and (b)(5)(iii) of this subpart. Samples may be
grab samples or composite samples. Samples shall be taken at
approximately equally spaced time intervals over a 1-hour period. Each
1-hour period constitutes a run, and the performance test shall consist
of a minimum of 3 runs. Concentration measurements based on Method 305
may be adjusted by dividing each concentration by the compound-specific
Fm factor listed in Table 34 of this subpart. Concentration
measurements based on methods other than Method 305 may be adjusted by
multiplying each concentration by the compound-specific Fm factor
listed in table 34 of this subpart. (For wastewater streams that are
Group 1 for both Table 8 and Table 9 compounds, compliance is
[[Page 2767]]
demonstrated only if the sum of the concentrations of Table 9 compounds
is less than 50 ppmw, and the concentration of each Table 8 compound is
less than 10 ppmw.)
(c) Noncombustion, nonbiological treatment process: Percent mass
removal/destruction option. This paragraph applies to performance tests
that are conducted to demonstrate compliance of a noncombustion,
nonbiological treatment process with the percent mass removal limits
specified in Sec. 63.138(e) (1) and (2) for Table 8 and/or Table 9
compounds. The owner or operator shall comply with the requirements
specified in Sec. 63.145 (c)(1) through (c)(6) of this subpart.
(1) Concentration. The concentration of Table 8 and/or Table 9
compounds entering and exiting the treatment process shall be
determined as provided in this paragraph. Wastewater samples shall be
collected using sampling procedures which minimize loss of organic
compounds during sample collection and analysis and maintain sample
integrity per Sec. 63.144(b)(5)(ii). The method shall be an analytical
method for wastewater which has that compound as a target analyte.
Samples may be grab samples or composite samples. Samples shall be
taken at approximately equally spaced time intervals over a 1-hour
period. Each 1-hour period constitutes a run, and the performance test
shall consist of a minimum of 3 runs. Concentration measurements based
on Method 305 shall be adjusted by dividing each concentration by the
compound-specific Fm factor listed in Table 34 of this subpart.
Concentration measurements based on methods other than Method 305 shall
not adjust by the compound-specific Fm factor listed in Table 34 of
this subpart.
(2) Flow rate. The flow rate of the entering and exiting wastewater
streams shall be determined using inlet and outlet flow meters,
respectively. Where the outlet flow is not greater than the inlet flow,
a flow meter shall be used, and may be used at either the inlet or
outlet. Flow rate measurements shall be taken at the same time as the
concentration measurements.
(3) Calculation of mass flow rate--for noncombustion, nonbiological
treatment processes. The mass flow rates of Table 8 and/or Table 9
compounds entering and exiting the treatment process are calculated as
follows.
[GRAPHIC] [TIFF OMITTED] TR17JA97.000
[GRAPHIC] [TIFF OMITTED] TR17JA97.001
Where:
QMWa, QMWb=Mass flow rate of Table 8 or Table 9 compounds,
average of all runs, in wastewater entering (QMWa) or exiting
(QMWb) the treatment process, kilograms per hour.
=Density of the wastewater, kilograms per cubic meter.
Qa,k, Qbb,k=Volumetric flow rate of wastewater entering
(Qa,k) or exiting (Qb,k) the treatment process during each
run k, cubic meters per hour.
CT,a,k, CT,b,k=Total concentration of Table 8 or Table 9
compounds in wastewater entering (CT,a,k) or exiting (CT,b,k)
the treatment process during each run k, parts per million by weight.
p=Number of runs.
k=Identifier for a run.
106=conversion factor, mg/kg
(4) Percent removal calculation for mass flow rate. The percent
mass removal across the treatment process shall be calculated as
follows:
[GRAPHIC] [TIFF OMITTED] TR17JA97.002
Where:
E=Removal or destruction efficiency of the treatment process, percent.
QMWa, QMWb=Mass flow rate of Table 8 or Table 9 compounds in
wastewater entering (QMWa) and exiting (QMWb) the treatment
process, kilograms per hour (as calculated using Equations WW1 and
WW2).
(5) Calculation of flow-weighted average of Fr values. If complying
with Sec. 63.138(e)(2), use Equation WW8 to calculate the flow-weighted
average of the Fr values listed in Table 9 of this subpart. When the
term ``combustion'' is used in Equation WW8, the term ``treatment
process'' shall be used for the purposes of this paragraph.
(6) Compare mass removal efficiency to required efficiency. Compare
the mass removal efficiency (calculated in Equation WW3) to the
required efficiency as specified in Sec. 63.138(e) of this subpart. If
complying with Sec. 63.138(e)(1), compliance is demonstrated if the
mass removal efficiency is 99 percent or greater. If complying with
Sec. 63.138(e)(2), compliance is demonstrated if the mass removal
efficiency is greater than or equal to the flow-weighted average of the
Fr values calculated in Equation WW8.
(d) Combustion treatment processes: percent mass removal/
destruction option. This paragraph applies to performance tests that
are conducted to demonstrate compliance of a combustion treatment
process with the percent mass destruction limits specified in
Sec. 63.138(e) (1) and (2) for Table 9 compounds, and/or
Sec. 63.138(e)(1) for Table 8 compounds. The owner or operator shall
comply with the requirements specified in Sec. 63.145 (d)(1) through
(d)(9) of this subpart. (Wastewater streams that are Group 1 for both
Table 8 and Table 9 compounds need only do the compliance demonstration
for Table 9 compounds.)
(1) Concentration in wastewater stream entering the combustion
treatment process. The concentration of
[[Page 2768]]
Table 8 and/or Table 9 compounds entering the treatment process shall
be determined as provided in this paragraph. Wastewater samples shall
be collected using sampling procedures which minimize loss of organic
compounds during sample collection and analysis and maintain sample
integrity per Sec. 63.144(b)(5)(ii). The method shall be an analytical
method for wastewater which has that compound as a target analyte.
Samples may be grab samples or composite samples. Samples shall be
taken at approximately equally spaced time intervals over a 1-hour
period. Each 1-hour period constitutes a run, and the performance test
shall consist of a minimum of 3 runs. Concentration measurements based
on Method 305 of appendix A of this part shall be adjusted by dividing
each concentration by the compound-specific Fm factor listed in table
34 of this subpart. Concentration measurements based on methods other
than Method 305 shall not adjust by the compound-specific Fm factor
listed in table 34 of this subpart.
(2) Flow rate of wastewater entering the combustion treatment
process. The flow rate of the wastewater stream entering the combustion
treatment process shall be determined using an inlet flow meter. Flow
rate measurements shall be taken at the same time as the concentration
measurements.
(3) Calculation of mass flow rate in wastewater stream entering
combustion treatment processes. The mass flow rate of Table 8 and/or
Table 9 compounds entering the treatment process is calculated as
follows:
[GRAPHIC] [TIFF OMITTED] TR17JA97.003
Where:
QMWa=Mass flow rate of Table 8 or Table 9 compounds entering the
combustion unit, kilograms per hour.
=Density of the wastewater stream, kilograms per cubic meter.
Qa,k=Volumetric flow rate of wastewater entering the combustion
unit during run k, cubic meters per hour.
CT,a,k=Total concentration of Table 8 or Table 9 compounds in the
wastewater stream entering the combustion unit during run k, parts per
million by weight.
p=Number of runs.
k=Identifier for a run.
(4) Concentration in vented gas stream exiting the combustion
treatment process. The concentration of Table 8 and/or Table 9
compounds exiting the combustion treatment process in any vented gas
stream shall be determined as provided in this paragraph. Samples may
be grab samples or composite samples. Samples shall be taken at
approximately equally spaced time intervals over a 1-hour period. Each
1-hour period constitutes a run, and the performance test shall consist
of a minimum of 3 runs. Concentration measurements shall be determined
using Method 18 of 40 CFR part 60, appendix A. Alternatively, any other
test method validated according to the procedures in Method 301 of
appendix A of this part may be used.
(5) Volumetric flow rate of vented gas stream exiting the
combustion treatment process. The volumetric flow rate of the vented
gas stream exiting the combustion treatment process shall be determined
using Method 2, 2A, 2C, or 2D of 40 CFR part 60, appendix A, as
appropriate. Volumetric flow rate measurements shall be taken at the
same time as the concentration measurements.
(6) Calculation of mass flow rate of vented gas stream exiting
combustion treatment processes. The mass flow rate of Table 8 and/or
Table 9 compounds in a vented gas stream exiting the combustion
treatment process shall be calculated as follows:
[GRAPHIC] [TIFF OMITTED] TR17JA97.004
[GRAPHIC] [TIFF OMITTED] TR17JA97.005
Where:
CGa,i, CGb,i=Concentration of total organic compounds (TOC)
(minus methane and ethane) or total organic hazardous air pollutants,
in vented gas stream, entering (CGa,i) and exiting (CGb,i)
the control device, dry basis, parts per million by volume.
QMGa, QMGb=Mass rate of TOC (minus methane and ethane) or
total organic hazardous air pollutants, in vented gas stream, entering
(QMGa) and exiting (QMGb) the control device, dry basis,
kilograms per hour.
MWi=Molecular weight of a component, kilogram/kilogram-mole.
QGa,QGb=Flow rate of gas stream entering (QGa) and
exiting (QGb) the control device, dry standard cubic meters per
hour.
K2=Constant, 41.57 x 10-9 (parts per million)-1 (gram-
mole per standard cubic meter) (kilogram/gram), where standard
temperature (gram-mole per standard cubic meter) is 20 deg. Celsius.
i=Identifier for a compound.
n=Number of components in the sample.
(7) Destruction efficiency calculation. The destruction efficiency
of the combustion unit for Table 8 and/or Table 9 compounds shall be
calculated as follows:
[[Page 2769]]
[GRAPHIC] [TIFF OMITTED] TR17JA97.006
Where:
E=Destruction efficiency of Table 8 or Table 9 compounds for the
combustion unit, percent.
QMWa=Mass flow rate of Table 8 or Table 9 compounds entering the
combustion unit, kilograms per hour.
QMGb=Mass flow rate of Table 8 or Table 9 compounds in vented gas
stream exiting the combustion treatment process, kilograms per hour.
(8) Calculation of flow-weighted average of Fr values. Use Equation
WW8 to calculate the flow-weighted average of the Fr values listed in
table 9 of this subpart.
[GRAPHIC] [TIFF OMITTED] TR17JA97.007
Where:
Fravg=Flow-weighted average of the Fr values.
Ci,a,k=Concentration of Table 8 and/or Table 9 compounds in
wastewater stream entering the combustion unit, during run k, parts per
million by weight.
Qa,k=Volumetric flow rate of wastewater entering the combustion
unit during run k, cubic meters per hour.
Fri=Compound-specific Fr value listed in table 9 of this subpart.
(9) Calculate flow-weighted average of Fr values and compare to
mass destruction efficiency. Compare the mass destruction efficiency
(calculated in Equation WW 7) to the required efficiency as specified
in Sec. 63.138(e). If complying with Sec. 63.138(e)(1), compliance is
demonstrated if the mass destruction efficiency is 99 percent or
greater. If complying with Sec. 63.138(e)(2), compliance is
demonstrated if the mass destruction efficiency is greater than or
equal to the flow-weighted average of the Fr value calculated in
Equation WW8.
(e) Non-combustion treatment processes including closed biological
treatment processes: RMR option. This paragraph applies to performance
tests for non-combustion treatment processes other than open biological
treatment processes to demonstrate compliance with the mass removal
provisions for Table 8 and/or Table 9 compounds. Compliance options for
noncombustion treatment processes are specified in Sec. 63.138(f) of
this subpart. Compliance options for closed aerobic or anaerobic
biological treatment processes are specified in Sec. 63.138(f) and
Sec. 63.138(g) of this subpart. When complying with Sec. 63.138(f), the
owner or operator shall comply with the requirements specified in
Sec. 63.145(e)(1) through (e)(6) of this subpart. When complying with
Sec. 63.138(g), the owner or operator shall comply with the
requirements specified in Sec. 63.145(e)(1) through (e)(6) of this
subpart. (Wastewater streams that are Group 1 for both Table 8 and
Table 9 compounds need only do the compliance demonstration for Table 9
compounds.)
(1) Concentration in wastewater stream. The concentration of Table
8 and/or Table 9 compounds shall be determined as provided in this
paragraph. Concentration measurements to determine RMR shall be taken
at the point of determination or downstream of the point of
determination with adjustment for concentration change made according
to Sec. 63.144(b)(6) of this subpart. Concentration measurements to
determine AMR shall be taken at the inlet and outlet to the treatment
process and as provided in Sec. 63.145(a)(7) for a series of treatment
processes. Wastewater samples shall be collected using sampling
procedures which minimize loss of organic compounds during sample
collection and analysis and maintain sample integrity per
Sec. 63.144(b)(5)(ii). The method shall be an analytical method for
wastewater which has that compound as a target analyte. Samples may be
grab samples or composite samples. Samples shall be taken at
approximately equally spaced time intervals over a 1-hour period. Each
1-hour period constitutes a run, and the performance test shall consist
of a minimum of 3 runs. Concentration measurements based on Method 305
shall be adjusted by dividing each concentration by the compound-
specific Fm factor listed in table 34 of this subpart. Concentration
measurements based on methods other than Method 305 shall not adjust by
the compound-specific Fm factor listed in table 34 of this subpart.
(2) Flow rate. Flow rate measurements to determine RMR shall be
taken at the point of determination or downstream of the point of
determination with adjustment for flow rate change made according to
Sec. 63.144(c)(4) of this subpart. Flow rate measurements to determine
AMR shall be taken at the inlet and outlet to the treatment process and
as provided in Sec. 63.145(a)(7) for a series of treatment processes.
Flow rate shall be determined using inlet and outlet flow measurement
devices. Where the outlet flow is not greater than the inlet flow, a
flow measurement device shall be used, and may be used at either the
inlet or outlet. Flow rate measurements shall be taken at the same time
as the concentration measurements.
(3) Calculation of RMR for non-combustion treatment processes
including closed biological treatment processes. When using
Sec. 63.138(f) to comply, the required mass removal of Table 8 and/or
Table 9 compounds for each Group 1 wastewater stream shall be
calculated as specified in paragraph (e)(3)(i) of this section. When
using Sec. 63.138(g) to comply, the required mass removal shall be
calculated as specified in paragraph (e)(3)(ii) of this section.
(i) When using Sec. 63.138(f) to comply, the required mass removal
of Table 8 and/or Table 9 compounds for each Group 1 wastewater stream
shall be calculated using Equation WW9.
[[Page 2770]]
[GRAPHIC] [TIFF OMITTED] TR17JA97.008
Where:
RMR=Required mass removal for treatment process or series of treatment
processes, kilograms per hour.
=Density of the Group 1 wastewater stream, kilograms per cubic
meter.
Q=Volumetric flow rate of wastewater stream at the point of
determination, liters per hour.
i=Identifier for a compound.
n=Number of Table 8 or Table 9 compounds in stream.
Ci=Concentration of Table 8 or Table 9 compounds at the point of
determination, parts per million by weight.
Fri=Fraction removal value of a Table 8 or Table 9 compound. Fr
values are listed in table 9 of this subpart.
10\9\=Conversion factor, mg/kg * l/m\3\.
(ii) When using Sec. 63.138(g) to comply, the required mass removal
is 95 percent of the mass flow rate for all Group 1 and Group 2
wastewater streams combined for treatment. The required mass removal of
Table 8 and/or Table 9 compounds for all Group 1 and Group 2 wastewater
streams combined for treatment when complying with Sec. 63.138(g) shall
be calculated using the following equation:
[GRAPHIC] [TIFF OMITTED] TR17JA97.009
Where:
RMR=Required mass removal for treatment process or series of treatment
processes, kilograms per hour.
=Density of the Group 1 wastewater stream, kilograms per cubic
meter.
Q=Volumetric flow rate of wastewater stream at the point of
determination, liters per hour.
i=Identifier for a compound.
n=Number of Table 8 or Table 9 compounds in stream.
Ci=Concentration of Table 8 or Table 9 compounds at the point of
determination, parts per million by weight.
10\9\=Conversion factor, mg/kg * l/m\3\
(4)(i) The required mass removal is calculated by summing the
required mass removal for each Group 1 wastewater stream to be combined
for treatment when complying with Sec. 63.138(f).
(ii) The required mass removal is calculated by summing the
required mass removal for all Group 1 and Group 2 wastewater streams
combined for treatment when complying with Sec. 63.138(g).
(5) The AMR calculation procedure for non-combustion treatment
processes including closed biological treatment processes. The AMR
shall be calculated as follows:
[GRAPHIC] [TIFF OMITTED] TR17JA97.010
Where:
AMR=Actual mass removal of Table 8 or Table 9 compounds achieved by
treatment process or series of treatment processes, kilograms per hour.
QMWa=Mass flow rate of Table 8 or Table 9 compounds in wastewater
entering the treatment process or first treament process in a series of
treatment processes, kilograms per hour.
QMWb=Mass flow rate of Table 8 or Table 9 compounds in wastewater
exiting the last treatment process in a series of treatment processes,
kilograms per hour.
(6) Compare RMR to AMR. When complying with Sec. 63.138(f), compare
the RMR calculated in Equation WW9 to the AMR calculated in Equation
WW10. Compliance is demonstrated if the AMR is greater than or equal to
the RMR. When complying with Sec. 63.138(g), compare the RMR calculated
in Equation WW-9a to the AMR calculated in Equation WW10. Compliance is
demonstrated if the AMR is greater than or equal to 95-percent mass
removal.
(f) Open or closed aerobic biological treatment processes: Required
mass removal (RMR) option. This paragraph applies to the use of
performance tests that are conducted for open or closed aerobic
biological treatment processes to demonstrate compliance with the mass
removal provisions for Table 8 and/or Table 9 compounds. These
compliance options are specified in Sec. 63.138(f) of this subpart. The
owner or operator shall comply with the requirements specified in
Sec. 63.145 (f)(1) through (f)(6) of this subpart. Some compounds may
not require a performance test. Refer to Sec. 63.145(h) and table 36 of
this subpart to determine which compounds may be exempt from the
requirements of this paragraph.
(1) Concentration in wastewater stream. The concentration of Table
8 and/or Table 9 compounds shall be determined as provided in this
paragraph. Concentration measurements to determine RMR shall be taken
at the point of determination or downstream of the point of
determination with adjustment for concentration change made according
to Sec. 63.144(b)(6) of this subpart. Concentration measurements to
determine AMR shall be taken at the inlet and outlet to the treatment
process and as provided in Sec. 63.145(a)(7) for a series of treatment
processes. Wastewater samples shall be collected using sampling
procedures which minimize loss of organic compounds during sample
collection and analysis and maintain sample integrity per
Sec. 63.144(b)(5)(ii). The method shall be an analytical method for
wastewater which has that compound as a target analyte. Samples may be
grab samples or composite samples. Samples shall be taken at
approximately equally spaced time intervals over a 1-hour period. Each
1-hour period constitutes a run, and the performance test shall consist
of a minimum of 3 runs. Concentration measurements based on Method 305
shall be adjusted by dividing each concentration by the compound-
specific Fm factor listed in table 34 of this subpart. Concentration
measurements
[[Page 2771]]
based on methods other than Method 305 shall not adjust by the
compound-specific Fm factor listed in table 34 of this subpart.
(2) Flow rate. Flow rate measurements to determine RMR shall be
taken at the point of determination or downstream of the point of
determination with adjustment for flow rate change made according to
Sec. 63.144(c)(4) of this subpart. Flow rate measurements to determine
AMR shall be taken at the inlet and outlet to the treatment process and
as provided in Sec. 63.145(a)(7) for a series of treatment processes.
Flow rate shall be determined using inlet and outlet flow measurement
devices. Where the outlet flow is not greater than the inlet flow, a
flow measurement device shall be used, and may be used at either the
inlet or outlet. Flow rate measurements shall be taken at the same time
as the concentration measurements.
(3) Calculation of RMR for open or closed aerobic biological
treatment processes. The required mass removal of Table 8 and/or Table
9 compounds for each Group 1 wastewater stream shall be calculated
using the following equation:
[GRAPHIC] [TIFF OMITTED] TR17JA97.011
Where:
RMR=Required mass removal for treatment process or series of treatment
processes, kilograms per hour.
P=Density of the Group 1 wastewater stream, kilograms per cubic meter.
Q=Volumetric flow rate of wastewater stream at the point of
determination, liters per hour.
i=Identifier for a compound.
n=Number of Table 8 or Table 9 compounds in stream.
Ci=Concentration of Table 8 or Table 9 compounds at the point of
determination, parts per million by weight.
Fri=Fraction removal value of a Table 8 or Table 9 compound. Fr
values are listed in table 9 of this subpart.
109=Conversion factor, mg/kg * l/m3.
(4) The required mass removal is calculated by adding together the
required mass removal for each Group 1 wastewater stream to be combined
for treatment.
(5) Actual mass removal calculation procedure for open or closed
aerobic biological treatment processes. The actual mass removal (AMR)
shall be calculated using Equation WW12 as specified in paragraph
(f)(5)(i) of this section when the performance test is performed across
the open or closed aerobic biological treatment process only. If
compliance is being demonstrated in accordance with
Sec. 63.145(a)(7)(i), the AMR for the series shall be calculated using
Equation WW13 in Sec. 63.145(f)(5)(ii). (This equation is for
situations where treatment is performed in a series of treatment
processes connected by hard-piping.) If compliance is being
demonstrated in accordance with Sec. 63.145(a)(7)(ii), the AMR for the
biological treatment process shall be calculated using Equation WW12 in
Sec. 63.145(f)(5)(i). The AMR for the biological treatment process used
in a series of treatment processes calculated using Equation WW12 shall
be added to the AMR determined for each of the other individual
treatment processes in the series of treatment processes.
(i) Calculate AMR for the open or closed aerobic biological
treatment process as follows:
[GRAPHIC] [TIFF OMITTED] TR17JA97.012
Where:
AMR=Actual mass removal of Table 8 or Table 9 compounds achieved by
open or closed biological treatment process, kilograms per hour.
QMWa=Mass flow rate of Table 8 or Table 9 compounds in wastewater
entering the treatment process, kilograms per hour.
Fbio=Site-specific fraction of Table 8 or Table 9 compounds
biodegraded. Fbio shall be determined as specified in
Sec. 63.145(h) and appendix C of this subpart.
(ii) Calculate AMR across a series of treatment units where the
last treatment unit is an open or closed aerobic biological treatment
process as follows:
[GRAPHIC] [TIFF OMITTED] TR17JA97.013
Where:
AMR=Actual mass removal of Table 8 or Table 9 compounds achieved by a
series of treatment processes, kilograms per hour.
QMWa=Mass flow rate of Table 8 or Table 9 compounds in wastewater
entering the first treatment process in a series of treatment
processes, kilograms per hour.
QMWb=Mass flow rate of Table 8 or Table 9 compounds in wastewater
exiting the last treatment process in a series of treatment processes
prior to the biological treatment process, kilograms per hour.
Fbio=Site-specific fraction of Table 8 or Table 9 compounds
biodegraded. Fbio shall be determined as specified in
Sec. 63.145(h) and appendix C of this subpart.
(6) Compare RMR to AMR. Compare the RMR calculated in Equation WW11
to the AMR calculated in either Equation WW12 or WW13, as applicable.
Compliance is demonstrated if the AMR is greater than or equal to the
RMR.
(g) Open or closed aerobic biological treatment processes: 95-
percent mass removal option. This paragraph applies to performance
tests that are conducted for open or closed aerobic biological
treatment processes to demonstrate compliance with the 95-percent mass
removal provisions for Table 8 and/or Table 9 compounds. This
compliance option is specified in Sec. 63.138(g) of this subpart. The
RMR for this option is 95-percent mass removal. The owner or operator
shall comply with the requirements specified in Sec. 63.145(g)(1) to
determine AMR, Sec. 63.145 (e)(3)(ii) and (e)(4)(ii) to determine RMR,
and (g)(2) of this subpart to determine whether compliance has been
demonstrated. Some compounds may not require a performance test. Refer
to Sec. 63.145(h) and table 36 of this subpart to determine which
compounds may be exempt from the requirements of this paragraph.
(Wastewater streams that are Group 1 for both Table 8 and Table 9
compounds need only do the compliance demonstration for Table 9
compounds.)
[[Page 2772]]
(1) The owner or operator shall comply with the requirements
specified in paragraphs (f)(1), (f)(2), and (f)(5) of this section to
determine AMR. References to Group 1 wastewater streams shall be deemed
Group 1 and Group 2 wastewater streams for the purposes of this
paragraph.
(2) Compare RMR to AMR. Compliance is demonstrated if the AMR is
greater than or equal to RMR.
(h) Site-specific fraction biodegraded (Fbio). The compounds
listed in table 9 of this subpart are divided into three sets for the
purpose of determining whether Fbio must be determined, and if
Fbio must be determined, which procedures may be used to determine
compound-specific kinetic parameters. These sets are designated as
lists 1, 2, and 3 in table 36 of this subpart.
(1) Performance test exemption. If a biological treatment process
meets the requirements specified in paragraphs (h)(1)(i) and (h)(1)(ii)
of this section, the owner or operator is not required to determine
Fbio and is exempt from the applicable performance test
requirements specified in Sec. 63.138 of this subpart.
(i) The biological treatment process meets the definition of
``enhanced biological treatment process'' in Sec. 63.111 of this
subpart.
(ii) At least 99 percent by weight of all compounds on table 36 of
this subpart that are present in the aggregate of all wastewater
streams using the biological treatment process to comply with
Sec. 63.138 of this subpart are compounds on list 1 of table 36 of this
subpart.
(2) Fbio determination. For wastewater streams that include
one or more compounds on lists 2 and/or 3 of table 36 of this subpart
that do not meet criteria in paragraph (h)(1)(ii) of this section, the
owner or operator shall determine Fbio for the biological
treatment process using the procedures in appendix C to part 63, and
paragraph (h)(2)(i) or (h)(2)(ii) of this section. For biological
treatment processes that do not meet the definition for enhanced
biological treatment in Sec. 63.111 of this subpart, the owner or
operator shall determine the Fbio for the biological treatment
process using any of the procedures in appendix C to part 63, except
the batch tests procedure.
(i) Wastewater streams without list 3 compounds that are treated in
enhanced biological treatment processes. For wastewater streams that
include no compounds on list 3 of table 36 of this subpart and the
biological treatment process meets the definition of enhanced
biological treatment process in Sec. 63.111 of this subpart, the owner
or operator shall determine fbio for the list 2 compounds using
any of the procedures specified in appendix C of 40 CFR part 63. (The
symbol ``fbio'' represents the site specific fraction of an
individual Table 8 or Table 9 compound that is biodegraded.) The owner
or operator shall calculate fbio for the list 1 compounds using
the defaults for first order biodegradation rate constants (K1) in
table 37 of subpart G and follow the procedure explained in Form III of
appendix C, 40 CFR part 63, or any of the procedures specified in
appendix C, 40 CFR part 63.
(ii) Wastewater streams with list 3 compounds that are treated in
enhanced biological treatment processes. For wastewater streams that
include one or more compounds on list 3 of table 36 of this subpart,
the owner or operator shall determine fbio for the list 3
compounds using any of the procedures specified in appendix C, 40 CFR
part 63, except the batch tests procedure. The owner or operator shall
determine fbio for the list 2 compounds using any of the
procedures specified in appendix C, 40 CFR part 63. The owner or
operator shall calculate fbio for the list 1 compounds using the
defaults for first order biodegradation rate constants (K1) in
table 37 of subpart G and follow the procedure explained in Form III of
appendix C, 40 CFR part 63, or any of the procedures specified in
appendix C, of 40 CFR part 63.
(iii) Performance tests for control devices other than flares. This
paragraph applies to performance tests that are conducted to
demonstrate compliance of a control device with the efficiency limits
specified in Sec. 63.139(c). If complying with the 95-percent reduction
efficiency requirement, comply with the requirements specified in
paragraphs (i)(1) through (i)(9) of this section. If complying with the
20 ppm by volume requirement, comply with the requirements specified in
paragraphs (i)(1) through (i)(6) and (i)(9) of this section. The 20 ppm
by volume limit or 95 percent reduction efficiency requirement shall be
measured as either total organic hazardous air pollutants or as TOC
minus methane and ethane.
(1) Sampling sites. Sampling sites shall be selected using Method 1
or 1A of 40 CFR part 60, appendix A, as appropriate. For determination
of compliance with the 95 percent reduction requirement, sampling sites
shall be located at the inlet and the outlet of the control device. For
determination of compliance with the 20 parts per million by volume
limit, the sampling site shall be located at the outlet of the control
device.
(2) Concentration in gas stream entering or exiting the control
device. The concentration of total organic hazardous air pollutants or
TOC in a gas stream shall be determined as provided in this paragraph.
Samples may be grab samples or composite samples (i.e., integrated
samples). Samples shall be taken at approximately equally spaced time
intervals over a 1-hour period. Each 1-hour period constitutes a run,
and the performance test shall consist of a minimum of 3 runs.
Concentration measurements shall be determined using Method 18 of 40
CFR part 60, appendix A. Alternatively, any other test method validated
according to the procedures in Method 301 of appendix A of this part
may be used.
(3) Volumetric flow rate of gas stream entering or exiting the
control device. The volumetric flow rate of the gas stream shall be
determined using Method 2, 2A, 2C, or 2D of 40 CFR part 60, appendix A,
as appropriate. Volumetric flow rate measurements shall be taken at the
same time as the concentration measurements.
(4) Calculation of TOC concentration. The TOC concentration
(CGT) is the sum of the concentrations of the individual
components. If compliance is being determined based on TOC, the owner
or operator shall compute TOC for each run using the following
equation:
[GRAPHIC] [TIFF OMITTED] TR17JA97.014
Where:
CGT=Total concentration of TOC (minus methane and ethane) in
vented gas stream, average of samples, dry basis, parts per million by
volume.
CGSi,j=Concentration of sample components in vented gas stream for
sample j, dry basis, parts per million by volume.
i=Identifier for a compound.
[[Page 2773]]
n=Number of components in the sample.
j=Identifier for a sample.
m=Number of samples in the sample run.
(5) Calculation of total organic hazardous air pollutants
concentration. The owner or operator determining compliance based on
total organic hazardous air pollutants concentration (CHAP) shall
compute CHAP according to the Equation WW14, except that only
Table 9 compounds shall be summed.
(6) Percent oxygen correction for combustion control devices. If
the control device is a combustion device, comply with the requirements
specified in paragraph (i)(6)(i) of this section to determine oxygen
concentration, and in paragraph (i)(6)(ii) of this section to calculate
the percent oxygen correction.
(i) Oxygen concentration. The concentration of TOC or total organic
hazardous air pollutants shall be corrected to 3 percent oxygen if the
control device is a combustion device. The emission rate correction
factor for excess air, composite sampling (i.e., integrated sampling)
and analysis procedures of Method 3B of 40 CFR part 60, appendix A
shall be used to determine the actual oxygen concentration (%02d).
The samples shall be taken during the same time that the TOC (minus
methane or ethane) or total organic hazardous air pollutants samples
are taken.
(ii) 3 percent oxygen calculation. The concentration corrected to 3
percent oxygen (CGc), when required, shall be computed using the
following equation:
[GRAPHIC] [TIFF OMITTED] TR17JA97.015
Where:
CGc=Concentration of TOC or organic hazardous air pollutants
corrected to 3 percent oxygen, dry basis, parts per million by volume.
CGT=Total concentration of TOC (minus methane and ethane) in
vented gas stream, average of samples, dry basis, parts per million by
volume.
%02d=Concentration of oxygen measured in vented gas stream, dry
basis, percent by volume.
(7) Mass rate calculation. The mass rate of either TOC (minus
methane and ethane) or total organic hazardous air pollutants shall be
calculated using the following equations. Where the mass rate of TOC is
being calculated, all organic compounds (minus methane and ethane)
measured by methods specified in paragraph (i)(2) of this section are
summed using Equations WW16 and WW17. Where the mass rate of total
organic hazardous air pollutants is being calculated, only Table 9
compounds shall be summed using Equations WW16 and WW17.
[GRAPHIC] [TIFF OMITTED] TR17JA97.016
[GRAPHIC] [TIFF OMITTED] TR17JA97.017
Where:
CGa,i, CGb,i=Concentration of TOC (minus methane and ethane)
or total organic hazardous air pollutants, in vented gas stream,
entering (CGa,i) and exiting (CGb,i) the control device, dry
basis, parts per million by volume.
QMGa, QMGb=Mass rate of TOC (minus methane and ethane) or
total organic hazardous air pollutants, in vented gas stream, entering
(QMGa) and exiting (QMGb) the control device, dry basis,
kilograms per hour.
MWi=Molecular weight of a component, kilogram/kilogram-mole.
QGa, QGb=Flow rate of gas stream entering (QGa) and
exiting (QGb) the control device, dry standard cubic meters per
hour.
K2=Constant, 41.57 x 10-9 (parts per million)-1 (gram-
mole per standard cubic meter) (kilogram/gram), where standard
temperature (gram-mole per standard cubic meter) is 20 deg. Celsius.
i=Identifier for a compound.
n=Number of components in the sample.
(8) Percent reduction calculation. The percent reduction in TOC
(minus methane and ethane) or total organic hazardous air pollutants
shall be calculated as follows:
[GRAPHIC] [TIFF OMITTED] TR17JA97.018
Where:
E=Destruction efficiency of control device, percent.
QMGa, QMGb=Mass rate of TOC (minus methane and ethane) or
total organic hazardous air pollutants, in vented gas stream entering
and exiting (QMGb) the control device, dry basis, kilograms per
hour.
(9) Compare mass destruction efficiency to required efficiency. If
complying with the 95 percent reduction efficiency requirement,
compliance is demonstrated if the mass destruction efficiency
(calculated in Equation WW18) is 95 percent or greater. If complying
with the 20 parts per million by volume limit in Sec. 63.139 (c)(1)(ii)
of this subpart, compliance is demonstrated if the outlet total organic
compound concentration, less methane and ethane, or total organic
hazardous
[[Page 2774]]
air pollutants concentration is 20 parts per million by volume, or
less. For combustion control devices, the concentration shall be
calculated on a dry basis, corrected to 3 percent oxygen.
(j) Compliance demonstration for flares. When a flare is used to
comply with Sec. 63.139 (c) of this subpart, the owner or operator
shall comply with the flare provisions in Sec. 63.11(b) of subpart A of
this part.
(1) The compliance determination shall be conducted using Method 22
of 40 CFR part 60, appendix A, to determine visible emissions.
(2) An owner or operator is not required to conduct a performance
test to determine percent emission reduction or outlet organic
hazardous air pollutants or TOC concentration when a flare is used.
Sec. 63.146 Process wastewater provisions--reporting.
(a) For each waste management unit, treatment process, or control
device used to comply with Secs. 63.138 (b)(1), (c)(1), (d), (e), (f),
or (g) of this subpart for which the owner or operator seeks to monitor
a parameter other than those specified in table 11, table 12, or table
13 of this subpart, the owner or operator shall submit a request for
approval to monitor alternative parameters according to the procedures
specified in Sec. 63.151(f) or (g) of this subpart.
(b) The owner or operator shall submit the information specified in
paragraphs (b)(1) through (b)(9) of this section as part of the
Notification of Compliance Status required by Sec. 63.152(b) of this
subpart.
(1) [Reserved]
(2) For each new and existing source, the owner or operator shall
submit the information specified in table 15 of this subpart for Table
8 and/or Table 9 compounds.
(3) [Reserved]
(4) For each treatment process identified in table 15 of this
subpart that receives, manages, or treats a Group 1 wastewater stream
or residual removed from a Group 1 wastewater stream, the owner or
operator shall submit the information specified in table 17 of this
subpart.
(5) For each waste management unit identified in table 15 of this
subpart that receives or manages a Group 1 wastewater stream or
residual removed from a Group 1 wastewater stream, the owner or
operator shall submit the information specified in table 18 of this
subpart.
(6) For each residual removed from a Group 1 wastewater stream, the
owner or operator shall report the information specified in table 19 of
this subpart.
(7) For each control device used to comply with Secs. 63.133
through 63.139 of this subpart, the owner or operator shall report the
information specified in paragraphs (b)(7)(i) and (b)(7)(ii) of this
section.
(i) For each flare, the owner or operator shall submit the
information specified in paragraphs (b)(7)(i)(A) through (b)(7)(i)(C)
of this section.
(A) Flare design (i.e., steam-assisted, air-assisted, or non-
assisted);
(B) All visible emission readings, heat content determinations,
flow rate measurements, and exit velocity determinations made during
the compliance determination required by Sec. 63.139(c)(3) of this
subpart; and
(C) Reports of the times and durations of all periods during the
compliance determination when the pilot flame is absent or the monitor
is not operating.
(ii) For each control device other than a flare, the owner or
operator shall submit the information specified in paragraph
(b)(7)(ii)(A) of this section and in either paragraph (b)(7)(ii)(B) or
(b)(7)(ii)(C) of this section.
(A) The information on parameter ranges specified in
Sec. 63.152(b)(2) of this subpart for the applicable parameters
specified in table 13 of this subpart, unless the parameter range has
already been established in the operating permit; and either
(B) The design evaluation specified in Sec. 63.139(d)(2) of this
subpart; or
(C) Results of the performance test specified in Sec. 63.139(d)(1)
of this subpart. Performance test results shall include operating
ranges of key process and control parameters during the performance
test; the value of each parameter being monitored in accordance with
Sec. 63.143 of this subpart; and applicable supporting calculations.
(8) For each treatment process used to comply with Sec. 63.138
(b)(1)(iii)(C), (c)(1)(iii)(D), (d), or (e) of this subpart, the owner
or operator shall submit the information specified in paragraphs
(b)(8)(i) and (b)(8)(ii) of this section.
(i) For Items 1 and 2 in table 12 of this subpart, the owner or
operator shall submit the information specified in paragraphs
(b)(8)(i)(A) and (b)(8)(i)(B) of this section.
(A) The information on parameter ranges specified in
Sec. 63.152(b)(2) of this subpart for the parameters approved by the
Administrator, unless the parameter range has already been established
in the operating permit.
(B) Results of the initial measurements of the parameters approved
by the Administrator and any applicable supporting calculations.
(ii) For Item 3 in table 12 of this subpart, the owner or operator
shall submit the information on parameter ranges specified in
Sec. 63.152(b)(2) of this subpart for the parameters specified in Item
3 of table 12 of this subpart, unless the parameter range has already
been established in the operating permit.
(9) Except as provided in paragraph (b)(9)(iii) of this section,
for each waste management unit or treatment process used to comply with
Sec. 63.138(b)(1), (c)(1), (d), (e), (f), (g), or (h)(3) of this
subpart, the owner or operator shall submit the information specified
in either paragraph (b)(9)(i) or (b)(9)(ii) of this section.
(i) The design evaluation and supporting documentation specified in
Sec. 63.138(j)(1) of this subpart.
(ii) Results of the performance test specified in Sec. 63.138(j)(2)
of this subpart. Performance test results shall include operating
ranges of key process and control parameters during the performance
test; the value of each parameter being monitored in accordance with
Sec. 63.143 of this subpart; and applicable supporting calculations.
(iii) If the owner or operator elects to use one of the
technologies specified in Sec. 63.138(h) of this subpart, the owner or
operator is exempt from the requirements specified in paragraphs
(b)(9)(i) and (b)(9)(ii) of this section.
(c) For each waste management unit that receives, manages, or
treats a Group 1 wastewater stream or residual removed from a Group 1
wastewater stream, the owner or operator shall submit as part of the
next Periodic Report required by Sec. 63.152(c) of this subpart the
results of each inspection required by Sec. 63.143(a) of this subpart
in which a control equipment failure was identified. Control equipment
failure is defined for each waste management unit in Secs. 63.133
through 63.137 of this subpart. Each Periodic Report shall include the
date of the inspection, identification of each waste management unit in
which a control equipment failure was detected, description of the
failure, and description of the nature of and date the repair was made.
(d) Except as provided in paragraph (f) of this section, for each
treatment process used to comply with Sec. 63.138(b)(1), (c)(1), or (e)
of this subpart, the owner or operator shall submit as part of the next
Periodic Report required by Sec. 63.152(c) the information specified in
paragraphs (d)(1), (d)(2), and (d)(3) of this section for the
monitoring required by Sec. 63.143(b) of this subpart.
[[Page 2775]]
(1) For Item 1 in table 12, the owner or operator shall submit the
results of measurements that indicate that the biological treatment
unit is outside the range established in the Notification of Compliance
Status or operating permit.
(2) For Item 2 in table 12, the owner or operator shall submit the
monitoring results for each operating day during which the daily
average value of a continuously monitored parameter is outside the
range established in the Notification of Compliance Status or operating
permit.
(3) For Item 3 in table 12 of this subpart, the owner or operator
shall submit the monitoring results for each operating day during which
the daily average value of any monitored parameter approved in
accordance with Sec. 63.151 (f) was outside the range established in
the Notification of Compliance Status or operating permit.
(e) Except as provided in paragraph (f) of this section, for each
control device used to comply with Secs. 63.133 through 63.139 of this
subpart, the owner or operator shall submit as part of the next
Periodic Report required by Sec. 63.152(c) of this subpart the
information specified in either paragraph (e)(1) or (e)(2) of this
section.
(1) The information specified in table 20 of this subpart, or
(2) If the owner or operator elects to comply with
Sec. 63.143(e)(2) of this subpart, i.e., an organic monitoring device
installed at the outlet of the control device, the owner or operator
shall submit the monitoring results for each operating day during which
the daily average concentration level or reading is outside the range
established in the Notification of Compliance Status or operating
permit.
(f) Where the owner or operator obtains approval to use a treatment
process or control device other than one for which monitoring
requirements are specified in Sec. 63.143 of this subpart, or to
monitor parameters other than those specified in table 12 or 13 of this
subpart, the Administrator will specify appropriate reporting
requirements.
(g) If an extension is utilized in accordance with
Sec. 63.133(e)(2) or Sec. 63.133(h) of this subpart, the owner or
operator shall include in the next periodic report the information
specified in Sec. 63.133 (e)(2) or Sec. 63.133(h).
Sec. 63.147 Process wastewater provisions--recordkeeping.
(a) The owner or operator transferring a Group 1 wastewater stream
or residual removed from a Group 1 wastewater stream in accordance with
Sec. 63.132(g) of this subpart shall keep a record of the notice sent
to the treatment operator stating that the wastewater stream or
residual contains organic hazardous air pollutants which are required
to be managed and treated in accordance with the provisions of this
subpart.
(b) The owner or operator shall keep in a readily accessible
location the records specified in paragraphs (b)(1) through (b)(7) of
this section.
(1) A record that each waste management unit inspection required by
Secs. 63.133 through 63.137 of this subpart was performed.
(2) A record that each inspection for control devices required by
Sec. 63.139 of this subpart was performed.
(3) A record of the results of each seal gap measurement required
by Secs. 63.133(d) and 63.137(c) of this subpart. The records shall
include the date of the measurement, the raw data obtained in the
measurement, and the calculations described in Sec. 63.120(b)(2), (3),
and (4) of this subpart.
(4) For Item 1 and Item 2 of table 12 of this subpart, the owner or
operator shall keep the records approved by the Administrator.
(5) Except as provided in paragraphs (e) and (g) of this section,
continuous records of the monitored parameters specified in Item 3 of
table 12 and table 13 of this subpart, and in Sec. 63.143(e)(2) of this
subpart.
(6) Documentation of a decision to use an extension, as specified
in Sec. 63.133(e)(2) or (h) of this subpart, which shall include a
description of the failure, documentation that alternate storage
capacity is unavailable, and specification of a schedule of actions
that will ensure that the control equipment will be repaired or the
vessel will be emptied as soon as practical.
(7) Documentation of a decision to use a delay of repair due to
unavailability of parts, as specified in Sec. 63.140(c), shall include
a description of the failure, the reason additional time was necessary
(including a statement of why replacement parts were not kept on site
and when the manufacturer promised delivery), and the date when repair
was completed.
(c) For each boiler or process heater used to comply with
Secs. 63.133 through 63.139 of this subpart, the owner or operator
shall keep a record of any changes in the location at which the vent
stream is introduced into the flame zone as required in
Sec. 63.139(c)(1) of this subpart.
(d) The owner or operator shall keep records of the daily average
value of each continuously monitored parameter for each operating day
as specified in Sec. 63.152(f), except as provided in paragraphs (d)(1)
and (d)(2) of this section.
(1) For flares, records of the times and duration of all periods
during which the pilot flame is absent shall be kept rather than daily
averages.
(2) For carbon adsorbers, the owner or operator shall keep the
records specified in paragraphs (d)(2)(i) and (d)(2)(ii) of this
section instead of daily averages.
(i) Records of the total regeneration stream mass flow for each
carbon bed regeneration cycle.
(ii) Records of the temperature of the carbon bed after each
regeneration cycle.
(e) Where the owner or operator obtains approval to use a control
device other than one for which monitoring requirements are specified
in Sec. 63.143 of this subpart, or to monitor parameters other than
those specified in table 12 or table 13 of this subpart, the
Administrator will specify appropriate recordkeeping requirements.
(f) If the owner or operator uses process knowledge to determine
the annual average concentration of a wastewater stream as specified in
Sec. 63.144(b)(3) of this subpart and/or uses process knowledge to
determine the annual average flow rate as specified in
Sec. 63.144(c)(1) of this subpart, and determines that the wastewater
stream is not a Group 1 wastewater stream, the owner or operator shall
keep in a readily accessible location the documentation of how process
knowledge was used to determine the annual average concentration and/or
the annual average flow rate of the wastewater stream.
27. Section 63.148 is amended by revising paragraphs (c)(2),
(c)(4)(ii), (c)(5), (i)(3)(i), (i)(3)(ii), and (j)(2) to read as
follows:
Sec. 63.148 Leak inspection provisions.
* * * * *
(c) * * *
(2)(i) Except as provided in paragraph (c)(2)(ii) of this section,
the detection instrument shall meet the performance criteria of Method
21 of 40 CFR part 60, appendix A, except the instrument response factor
criteria in section 3.1.2(a) of Method 21 shall be for the average
composition of the process fluid not each individual volatile organic
compound in the stream. For process streams that contain nitrogen, air,
or other inerts which are not organic hazardous air pollutants or
volatile organic compounds, the average stream response factor shall be
calculated on an inert-free basis.
(ii) If no instrument is available at the plant site that will meet
the performance criteria specified in paragraph (c)(2)(i) of this
section, the
[[Page 2776]]
instrument readings may be adjusted by multiplying by the average
response factor of the process fluid, calculated on an inert-free basis
as described in paragraph (c)(2)(i) of this section.
* * * * *
(4) * * *
(ii) Mixtures of methane in air at a concentration less than 10,000
parts per million. A calibration gas other than methane in air may be
used if the instrument does not respond to methane or if the instrument
does not meet the performance criteria specified in paragraph (b)(2)(i)
of this section. In such cases, the calibration gas may be a mixture of
one or more of the compounds to be measured in air.
(5) An owner or operator may elect to adjust or not adjust
instrument readings for background. If an owner or operator elects to
not adjust readings for background, all such instrument readings shall
be compared directly to the applicable leak definition to determine
whether there is a leak. If an owner or operator elects to adjust
instrument readings for background, the owner or operator shall measure
background concentration using the procedures in Secs. 63.180(b) and
(c) of subpart H of this part. The owner or operator shall subtract
background reading from the maximum concentration indicated by the
instrument.
* * * * *
(i) * * *
(3) * * *
(i) Hourly records of whether the flow indicator specified under
paragraph (f)(1) of this section was operating and whether a diversion
was detected at any time during the hour, as well as records of the
times of all periods when the vent stream is diverted from the control
device or the flow indicator is not operating.
(ii) Where a seal mechanism is used to comply with paragraph (f)(2)
of this section, hourly records of flow are not required. In such
cases, the owner or operator shall record whether the monthly visual
inspection of the seals or closure mechanisms has been done, and shall
record the occurrence of all periods when the seal mechanism is broken,
the bypass line valve position has changed, or the key for a lock-and-
key type configuration has been checked out, and records of any car-
seal that has broken.
* * * * *
(j) * * *
(2) Reports of the times of all periods recorded under paragraph
(i)(3)(i) of this section when the vent stream is diverted from the
control device through a bypass line; and
* * * * *
28. Section 63.149 is added to read as follows:
Sec. 63.149 Control requirements for certain liquid streams in open
systems within a chemical manufacturing process unit.
(a) The owner or operator shall comply with the provisions of table
35 of this subpart, for each item of equipment meeting all the criteria
specified in paragraphs (b) through (d) and either paragraph (e)(1) or
(e)(2) of this section.
(b) The item of equipment is of a type identified in table 35 of
this subpart;
(c) The item of equipment is part of a chemical manufacturing
process unit that meets the criteria of Sec. 63.100(b) of subpart F of
this part;
(d) The item of equipment is controlled less stringently than in
table 35 and is not listed in Sec. 63.100(f) of subpart F of this part,
and the item of equipment is not otherwise exempt from controls by the
provisions of subparts A, F, G, or H of this part; and
(e) The item of equipment:
(1) is a drain, drain hub, manhole, lift station, trench, pipe, or
oil/water separator that conveys water with a total annual average
concentration greater than or equal to 10,000 parts per million by
weight of Table 9 compounds at any flowrate; or a total annual average
concentration greater than or equal to 1,000 parts per million by
weight of Table 9 compounds at an annual average flow rate greater than
or equal to 10 liters per minute. At a chemical manufacturing process
unit subject to the new source requirements of 40 CFR 63.100(l)(1) or
40 CFR 63.100(l)(2), the criteria of this paragraph are also met if the
item of equipment conveys water with an annual average concentration
greater than or equal to 10 parts per million by weight of any Table 8
compound at an annual average flow rate greater than or equal to 0.02
liter per minute, or
(2) Is a tank that receives one or more streams that contain water
with a total annual average concentration greater than or equal to
1,000 ppm (by weight) of Table 9 compounds at an annual average
flowrate greater than or equal to 10 liters per minute. At a chemical
manufacturing process unit subject to the new source requirements of 40
CFR 63.100(l)(1) or 40 CFR 63.100 (l)(2), the criteria of this
paragraph are also met if the tank receives one or more streams that
contain water with an annual average concentration greater than or
equal to 10 parts per million by weight of any Table 8 compound at an
annual average flow rate greater than or equal to 0.02 liter per
minute. The owner or operator of the source shall determine the
characteristics of the stream as specified in paragraphs (e)(2) (i) and
(ii) of this section.
(i) The characteristics of the stream being received shall be
determined at the inlet to the tank.
(ii) The characteristics shall be determined according to the
procedures in Sec. 63.144 (b) and (c).
29. Section 63.152 is amended by revising the introductory text of
paragraph (b)(1); revising paragraph (b)(2) introductory text and
paragraphs (b)(2)(ii)(A) and (b)(2)(ii)(B); adding paragraph (b)(5);
revising the introductory text of paragraphs (c)(2), (c)(2)(ii), and
(c)(2)(ii)(A); revising paragraphs (c)(2)(ii)(A)(2) and
(c)(2)(ii)(A)(3); revising the introductory text of paragraph
(c)(2)(ii)(B); revising paragraphs (c)(2)(ii)(C) and (c)(2)(ii)(E);
adding paragraph (c)(2)(iv); revising the introductory text of
paragraph (c)(4); revising paragraph (c)(4)(iii) and adding paragraph
(c)(4)(iv); adding a sentence to the end of paragraphs (c)(5)(iii) and
(c)(6)(v); revising the introductory text of paragraph (f), revising
paragraph (f)(2)(ii), revising the introductory text of paragraph
(f)(5), revising paragraph (f)(7); and adding paragraph (g) to read as
follows:
Sec. 63.152 General reporting and continuous records.
* * * * *
(b) * * *
(1) The notification shall include the results of any emission
point group determinations, performance tests, inspections, continuous
monitoring system performance evaluations, values of monitored
parameters established during performance tests, and any other
information used to demonstrate compliance or required to be included
in the Notification of Compliance Status under Sec. 63.110 (h) for
regulatory overlaps, under Sec. 63.117 for process vents, Sec. 63.122
for storage vessels, Sec. 63.129 for transfer operations, Sec. 63.146
for process wastewater, and Sec. 63.150 for emission points included in
an emissions average.
* * * * *
(2) For each monitored parameter for which a range is required to
be established under Sec. 63.114 for process vents, Sec. 63.127 for
transfer, Sec. 63.143 for process wastewater, Sec. 63.150(m) for
emission points in emissions averages, or Sec. 63.151(f), or
Sec. 63.152(e), the Notification of Compliance Status shall include the
information in paragraphs (b)(2)(i), (b)(2)(ii), and (b)(2)(iii) of
this section, unless the range and the
[[Page 2777]]
operating day definition have been established in the operating permit.
The recordkeeping and reporting requirements applicable to storage
vessels are located in Secs. 63.122 and 63.123.
* * * * *
(ii) * *
(A) If a performance test is required by this subpart for a control
device, the range shall be based on the parameter values measured
during the performance test and may be supplemented by engineering
assessments and/or manufacturer's recommendations. Performance testing
is not required to be conducted over the entire range of permitted
parameter values.
(B) If a performance test is not required by this subpart for a
control device, the range may be based solely on engineering
assessments and/or manufacturer's recommendations.
* * * * *
(5) An owner or operator who transfers a Group 1 wastewater stream
or residual removed from a Group 1 wastewater stream for treatment
pursuant to Sec. 63.132(g) shall include in the Notification of
Compliance Status the name and location of the transferee and a
description of the Group 1 wastewater stream or residual sent to the
treatment facility.
(c) * * *
(2) Except as provided in paragraph (c)(2)(iv) of this section, for
an owner or operator of a source complying with the provisions of
Secs. 63.113 through 63.147 for any emission points, Periodic Reports
shall include all information specified in Secs. 63.117 and 63.118 for
process vents, Sec. 63.122 for storage vessels, Secs. 63.129 and 63.130
for transfer operations, and Sec. 63.146 for process wastewater,
including reports of periods when monitored parameters are outside
their established ranges.
* * * * *
(ii) The parameter monitoring data for Group 1 emission points and
emission points included in emissions averages that are required to
perform continuous monitoring shall be used to determine compliance
with the required operating conditions for the monitored control
devices or recovery devices. For each excursion, except for excused
excursions, the owner or operator shall be deemed to have failed to
have applied the control in a manner that achieves the required
operating conditions.
(A) An excursion means any of the three cases listed in paragraph
(c)(2)(ii)(A)(1), (c)(2)(ii)(A)(2), or (c)(2)(ii)(A)(3) of this
section. For a control device or recovery device where multiple
parameters are monitored, if one or more of the parameters meets the
excursion criteria in paragraph (c)(2)(ii)(A)(1), (c)(2)(ii)(A)(2), or
(c)(2)(ii)(A)(3) of this section, this is considered a single excursion
for the control device or recovery device.
* * * * *
(2) When the period of control device or recovery device operation
is 4 hours or greater in an operating day and monitoring data are
insufficient to constitute a valid hour of data for at least 75 percent
of the operating hours.
(3) When the period of control device or recovery device operation
is less than 4 hours in an operating day and more than one of the hours
during the period of operation does not constitute a valid hour of data
due to insufficient monitoring data.
* * * * *
(B) The number of excused excursions for each control device or
recovery device for each semiannual period is specified in paragraphs
(c)(2)(ii)(B)(1) through (c)(2)(ii)(B)(6) of this section. This
paragraph applies to sources required to submit Periodic Reports
semiannually or quarterly. The first semiannual period is the 6-month
period starting the date the Notification of Compliance Status is due.
* * * * *
(C) If a monitored parameter is outside its established range or
monitoring data are not collected during periods of start-up, shutdown,
or malfunction (and the source is operated during such periods in
accordance with the source's start-up, shutdown, and malfunction plan
as required by Sec. 63.6(e)(3) of subpart A of this part) or during
periods of nonoperation of the chemical manufacturing process unit or
portion thereof (resulting in cessation of the emissions to which the
monitoring applies), then the excursion is not a violation and, in
cases where continuous monitoring is required, the excursion does not
count toward the number of excused excursions for determining
compliance.
* * * * *
(E) Paragraph (c)(2)(ii) of this section, except paragraph
(c)(2)(ii)(C) of this section, shall apply only to emission points and
control devices or recovery devices for which continuous monitoring is
required by Secs. 63.113 through 63.150.
* * * * *
(iv) The provisions of paragraphs (c)(2), (c)(2)(i), (c)(2)(ii),
and (c)(2)(iii) of this section do not apply to any storage vessel for
which the owner or operator is not required, by the applicable
monitoring plan established under Sec. 63.120(d)(2), to keep continuous
records. If continuous records are required, the owner or operator
shall specify, in the monitoring plan, whether the provisions of
paragraphs (c)(2), (c)(2)(i), (c)(2)(ii), and (c)(2)(iii) of this
section apply.
* * * * *
(4) Periodic Reports shall include the information in paragraphs
(c)(4)(i) through (c)(4)(iv) of this section, as applicable:
* * * * *
(iii) Notification if any Group 2 emission point becomes a Group 1
emission point, including a compliance schedule as required in
Sec. 63.100 of subpart F of this part, and
(iv) For process wastewater streams sent for treatment pursuant to
Sec. 63.132 (g), reports of changes in the identity of the treatment
facility or transferee.
* * * * *
(5) * * *
(iii) * * * For storage vessels to which the provisions of
paragraphs (c)(2)(i) through (c)(2)(iii) of this section do not apply
(as specified in paragraph (c)(2)(iv) of this section), the owner or
operator is required to comply with the provisions of the applicable
monitoring plan, and monitoring records may be used to determine
compliance.
* * * * *
(6) * * *
(v) Paragraphs (c)(2)(i) through (c)(2)(iii) of this section shall
govern the use of monitoring data to determine compliance for Group 1
emission points. For storage vessels to which the provisions of
paragraphs (c)(2)(i) through (c)(2)(iii) of this section do not apply
(as specified in paragraph (c)(2)(iv) of this section), the owner or
operator is required to comply with the provisions of the applicable
monitoring plan, and monitoring records may be used to determine
compliance.
* * * * *
(f) Owners or operators required to keep continuous records by
Secs. 63.118, 63.130, 63.147, 63.150, or other sections of this subpart
shall keep records as specified in paragraphs (f)(1) through (f)(7) of
this section, unless an alternative recordkeeping system has been
requested and approved under Sec. 63.151(f) or (g) or Sec. 63.152(e) or
under Sec. 63.8(f) of subpart A of this part, and except as provided in
paragraph (c)(2)(ii)(C) of this section or in paragraph (g) of this
section. If a monitoring plan for storage vessels pursuant to
Sec. 63.120(d)(2)(i) requires continuous records, the monitoring plan
shall specify which provisions, if any, of
[[Page 2778]]
paragraphs (f)(1) through (f)(7) of this section apply.
* * * * *
(2) * * *
(ii) Block average values for 15-minute or shorter periods
calculated from all measured data values during each period or at least
one measured data value per minute if measured more frequently than
once per minute.
* * * * *
(5) Daily average values of each continuously monitored parameter
shall be calculated for each operating day, and retained for 5 years,
except as specified in paragraphs (f)(6) and (f)(7) of this section.
* * * * *
(7) Monitoring data recorded during periods identified in
paragraphs (f)(7)(i) through (f)(7)(v) of this section shall not be
included in any average computed under this subpart. Records shall be
kept of the times and durations of all such periods and any other
periods during process or control device operation when monitors are
not operating.
(i) Monitoring system breakdowns, repairs, calibration checks, and
zero (low-level) and high-level adjustments;
(ii) Start-ups;
(iii) Shutdowns;
(iv) Malfunctions;
(v) Periods of non-operation of the chemical manufacturing process
unit (or portion thereof), resulting in cessation of the emissions to
which the monitoring applies.
(g) For any parameter with respect to any item of equipment, the
owner or operator may implement the recordkeeping requirements in
paragraph (g)(1) or (g)(2) of this section as alternatives to the
continuous operating parameter monitoring and recordkeeping provisions
listed in Secs. 63.114, 63.117, and 63.118 for process vents,
Secs. 63.127, 63.129, and 63.130 for transfer operations, Secs. 63.143,
63.146, and 63.147 for wastewater, and/or Sec. 63.152(f), except that
Sec. 63.152(f)(7) shall apply. The owner or operator shall retain each
record required by paragraph (g)(1) or (g)(2) of this section as
provided in Sec. 63.103(c) of subpart F of this part, except as
provided otherwise in paragraph (g)(1) or (g)(2) of this section.
(1) The owner or operator may retain only the daily average value,
and is not required to retain more frequent monitored operating
parameter values, for a monitored parameter with respect to an item of
equipment, if the requirements of paragraphs (g)(1)(i) through
(g)(1)(vi) of this section are met. An owner or operator electing to
comply with the requirements of paragraph (g)(1) of this section shall
notify the Administrator in the Notification of Compliance Status or,
if the Notification of Compliance Status has already been submitted, in
the periodic report immediately preceding implementation of the
requirements of paragraph (g)(1) of this section.
(i) The monitoring system is capable of detecting unrealistic or
impossible data during periods of operation other than startups,
shutdowns, or malfunctions (e.g., a temperature reading of -200 deg. C
on a boiler), and will alert the operator by alarm or other means. The
owner or operator shall record the occurrence. All instances of the
alarm or other alert in an operating day constitute a single
occurrence.
(ii) The monitoring system generates, updated at least hourly
throughout each operating day, a running average of the monitoring
values that have been obtained during that operating day, and the
capability to observe this average is readily available to the
Administrator on-site during the operating day. The owner or operator
shall record the occurrence of any period meeting the criteria in
paragraphs (g)(1)(ii)(A) through (g)(1)(iii)(C) of this section. All
instances in an operating day constitute a single occurrence.
(A) The running average is above the maximum or below the minimum
established limits;
(B) The running average is based on at least 6 1-hour average
values; and
(C) The running average reflects a period of operation other than a
startup, shutdown, or malfunction.
(iii) The monitoring system is capable of detecting unchanging data
during periods of operation other than startups, shutdowns, or
malfunctions, except in circumstances where the presence of unchanging
data is the expected operating condition based on past experience
(e.g., pH in some scrubbers), and will alert the operator by alarm or
other means. The owner or operator shall record the occurrence. All
instances of the alarm or other alert in an operating day constitute a
single occurrence.
(iv) The monitoring system will alert the owner or operator by an
alarm or other means, if the running average parameter value calculated
under paragraph (g)(1)(ii) of this section reaches a set point that is
appropriately related to the established limit for the parameter that
is being monitored.
(v) The owner or operator shall verify the proper functioning of
the monitoring system, including its ability to comply with the
requirements of paragraph (g)(1) of this section, at the times
specified in paragraphs (g)(1)(v)(A) through (g)(1)(v)(C) of this
section. The owner or operator shall document that the required
verifications occurred.
(A) Upon initial installation.
(B) Annually after initial installation.
(C) After any change to the programming or equipment constituting
the monitoring system, which might reasonably be expected to alter the
monitoring system's ability to comply with the requirements of this
section.
(vi) The owner or operator shall retain the records identified in
paragraphs (g)(1)(vi) (A) through (C) of this section.
(A) Identification of each parameter, for each item of equipment,
for which the owner or operator has elected to comply with the
requirements of paragraph (g) of this section.
(B) A description of the applicable monitoring system(s), and of
how compliance will be achieved with each requirement of paragraph
(g)(1)(i) through (g)(1)(v) of this section. The description shall
identify the location and format (e.g., on-line storage; log entries)
for each required record. If the description changes, the owner or
operator shall retain both the current and the most recent superseded
description. The description, and the most recent superseded
description, shall be retained as provided in Sec. 63.103(c) of subpart
F of this part, except as provided in paragraph (g)(1)(vi)(D) of this
section.
(C) A description, and the date, of any change to the monitoring
system that would reasonably be expected to affect its ability to
comply with the requirements of paragraph (g)(1) of this section.
(D) Owners and operators subject to paragraph (g)(1)(vi)(B) of
this section shall retain the current description of the monitoring
system as long as the description is current, but not less than 5 years
from the date of its creation. The current description shall, at all
times, be retained on-site or be accessible from a central location by
computer or other means that provides access within 2 hours after a
request. The owner or operator shall retain the most recent superseded
description at least until 5 years from the date of its creation. The
superseded description shall be retained on-site (or accessible from a
central location by computer that provides access within 2 hours after
a request) at least 6 months after its creation. Thereafter, the
superseded description may be stored off-site.
(2) If an owner or operator has elected to implement the
requirements of paragraph (g)(1) of this section, and a period of 6
consecutive months has passed without an excursion as defined
[[Page 2779]]
in paragraph (g)(2)(iv) of this section, the owner or operator is no
longer required to record the daily average value for that parameter
for that unit of equipment, for any operating day when the daily
average value is less than the maximum, or greater than the minimum
established limit. With approval by the Administrator, monitoring data
generated prior to the compliance date of this subpart shall be
credited toward the period of 6 consecutive months, if the parameter
limit and the monitoring was required and/or approved by the
Administrator.
(i) If the owner or operator elects not to retain the daily
average values, the owner or operator shall notify the Administrator in
the next periodic report. The notification shall identify the parameter
and unit of equipment.
(ii) If, on any operating day after the owner or operator has
ceased recording daily averages as provided in paragraph (g)(2) of this
section, there is an excursion as defined in paragraph (g)(2)(iv) of
this section, the owner or operator shall immediately resume retaining
the daily average value for each day, and shall notify the
Administrator in the next periodic report. The owner or operator shall
continue to retain each daily average value until another period of 6
consecutive months has passed without an excursion as defined in
paragraph (g)(2)(iv) of this section.
(iii) The owner or operator shall retain the records specified in
paragraphs (g)(1) (i), (ii), (iii), (iv), (v), and (vi) of this
section. For any calendar week, if compliance with paragraphs (g)(1)
(i), (ii), (iii), and (iv) of this section does not result in retention
of a record of at least one occurrence or measured parameter value, the
owner or operator shall record and retain at least one parameter value
during a period of operation other than a startup, shutdown, or
malfunction.
(iv) For purposes of paragraph (g) of this section, an excursion
means that the daily average value of monitoring data for a parameter
is greater than the maximum, or less than the minimum established
value, except as provided in paragraphs (g)(2)(iv)(A) and (g)(2)(iv)(B)
of this section.
(A) The daily average value during any start-up, shutdown, or
malfunction shall not be considered an excursion for purposes of this
paragraph (g)(2), if the owner or operator follows the applicable
provisions of the startup, shutdown, and malfunction plan required by
Sec. 63.6(e)(3) of subpart A of this part.
(B) An excused excursion, as described in Sec. 63.152(c)(2)(ii)
(B) and (C), shall not be considered an excursion for purposes of this
paragraph (g)(2).
30. The tables in the appendix to subpart G are amended by
revising tables 3, 4, 7, 11, 12, and 13; removing and reserving tables
14a and 14b; removing tables 15a and 15b, and adding table 15; removing
and reserving table 16; revising tables 17, 18, and 20; table 34 is
amended by revising the Fm entry for chlorobenzene from ``0.96''
to ``1.00'', the Fm entry for isophorone from ``0.47'' to
``0.51,'' the Fm entry for trichloroethane (1,1,2-) (Vinyl
trichloride) from ``0.98'' to ``1.00,'' and the Fm entry for
trichlorophenol (2,4,
5-) from ``1.00'' to ``0.11''; and adding tables 35, 36, and 37 and by
revising figure 1 and removing figures 2 through 10 to read as follows:
Table 3.--Process Vents--Monitoring, Recordkeeping, and Reporting Requirements for Complying With 98 Weight-
Percent Reduction of Total Organic Hazardous Air Pollutants Emissions or a Limit of 20 Parts Per Million by
Volume
----------------------------------------------------------------------------------------------------------------
Parameters to be monitored Recordkeeping and reporting requirements
Control device a for monitored parameters
----------------------------------------------------------------------------------------------------------------
Thermal incinerator..................... Firebox temperature b 1. Continuous records.c
[63.114(a)(1)(i)]. 2. Record and report the firebox
temperature averaged over the full
period of the performance test--NCS.d
3. Record the daily average firebox
temperature for each operating day.e
4. Report all daily average temperatures
that are outside the range established
in the NCS or operating permit and all
operating days when insufficient
monitoring data are collected f--PR. g
Catalytic incinerator................... Temperature upstream and 1. Continuous records.
downstream of the catalyst 2. Record and report the upstream and
bed [63.114(a)(1)(ii)]. downstream temperatures and the
temperature difference across the
catalyst bed averaged over the full
period of the performance test--NCS.
3. Record the daily average upstream
temperature and temperature difference
across the catalyst bed for each
operating day.e
4. Report all daily average upstream
temperatures that are outside the range
established in the NCS or operating
permit--PR.
5. Report all daily average temperature
differences across the catalyst bed that
are outside the range established in the
NCS or operating permit--PR.
6. Report all operating days when
insufficient monitoring data are
collected.f
Boiler or process heater with a design Firebox temperature b 1. Continuous records.
heat input capacity less than 44 [63.114(a)(3)]. 2. Record and report the firebox
megawatts and vent stream is not temperature averaged over the full
introduced with or as the primary fuel. period of the performance test--NCS.
3. Record the daily average firebox
temperature for each operating day.e
4. Report all daily average firebox
temperatures that are outside the range
established in the NCS or operating
permit and all operating days when
insufficient monitoring data are
collected f--PR.
Flare................................... Presence of a flame at the 1. Hourly records of whether the monitor
pilot light [63.114(a)(2)]. was continuously operating and whether
the pilot flame was continuously present
during each hour.
2. Record and report the presence of a
flame at the pilot light over the full
period of the compliance determination--
NCS.
3. Record the times and durations of all
periods when all pilot flames are absent
or the monitor is not operating.
4. Report the times and durations of all
periods when all pilot flames of a flare
are absent--PR.
[[Page 2780]]
Recapture devices....................... The appropriate monitoring 1. The recordkeeping and reporting
device identified in table requirements for monitored parameters
4 when, in the table, the identified for the appropriate
term ``recapture'' is monitoring device in table 4 of this
substituted for subpart.
``recovery.''
[63.114(a)(5)].
Scrubber for halogenated vent streams pH of scrubber effluent 1. Continuous records.
(Note: Controlled by a combustion [63.114(a)(4)(i)], and. 2. Record and report the pH of the
device other than a flare). scrubber effluent averaged over the full
period of the performance test--NCS.
3. Record the daily average pH of the
scrubber effluent for each operating
day.e
4. Report all daily average pH values of
the scrubber effluent that are outside
the range established in the NCS or
operating permit and all operating days
when insufficient monitoring data are
collected f--PR.
Scrubber for halogenated vent streams Scrubber liquid and gas 1. Continuous records of scrubber liquid
(Note: Controlled by a combustion flow rates flow rate.
device other than a flare) (Continued). [63.114(a)(4)(ii)]. 2. Record and report the scrubber liquid/
gas ratio averaged over the full period
of the performance test--NCS.
3. Record the daily average scrubber
liquid/gas ratio for each operating
day.e
4. Report all daily average scrubber
liquid/gas ratios that are outside the
range established in the NCS or
operating permit and all operating days
when insufficient monitoring data are
collected f--PR.
All control devices..................... Presence of flow diverted 1. Hourly records of whether the flow
to the atmosphere from the indicator was operating and whether
control device diversion was detected at any time
[63.114(d)(1)] or. during each hour.
2. Record and report the times and
durations of all periods when the vent
stream is diverted through a bypass line
or the monitor is not operating--PR.
Monthly inspections of 1. Records that monthly inspections were
sealed valves performed.
[63.114(d)(2)]. 2. Record and report all monthly
inspections that show the valves are
moved to the diverting position or the
seal has been changed--PR.
----------------------------------------------------------------------------------------------------------------
a Regulatory citations are listed in brackets.
b Monitor may be installed in the firebox or in the ductwork immediately downstream of the firebox before any
substantial heat exchange is encountered.
c``Continuous records'' is defined in Sec. 63.111 of this subpart.
d NCS=Notification of Compliance Status described in Sec. 63.152 of this subpart.
e The daily average is the average of all recorded parameter values for the operating day. If all recorded
values during an operating day are within the range established in the NCS or operating permit, a statement to
this effect can be recorded instead of the daily average.
f The periodic reports shall include the duration of periods when monitoring data is not collected for each
excursion as defined in Sec. 63.152(c)(2)(ii)(A) of this subpart.
g PR=Periodic Reports described in Sec. 63.152 of this subpart.
Table 4.--Process Vents--Monitoring, Recordkeeping, and Reporting Requirements for Maintaining a TRE Index Value
>1.0 and 4.0
----------------------------------------------------------------------------------------------------------------
Parameters to be monitored Recordkeeping and reporting requirements
Final recovery device a for monitored parameters
----------------------------------------------------------------------------------------------------------------
Absorber b Exit temperature of the 1. Continuous records.c
absorbing liquid 2. Record and report the exit temperature
[63.114(b)(1)], and. of the absorbing liquid averaged over
the full period of the TRE
determination--NCS.d
3. Record the daily average exit
temperature of the absorbing liquid for
each operating day.e
4. Report all the daily average exit
temperatures of the absorbing liquid
that are outside the range established
in the NCS or operating permit--PR.f
Exit specific gravity 1. Continuous records.
[63.114(b)(1)]. 2. Record and report the exit specific
gravity averaged over the full period of
the TRE determination--NCS.
3. Record the daily average exit specific
gravity for each operating day.e
4. Report all daily average exit specific
gravity values that are outside the
range established in the NCS or
operating permit--PR.
Condenser a............................. Exit (product side) 1. Continuous records.
temperature [63.114(b)(2)]. 2. Record and report the exit temperature
averaged over the full period of the TRE
determination--NCS.
3. Record the daily average exit
temperature for each operating day.e
4. Report all daily average exit
temperatures that are outside the range
established in the NCS or operating
permit--PR.
[[Page 2781]]
Carbon adsorber. d Total regeneration stream 1. Record of total regeneration stream
mass or volumetric flow mass flow for each carbon bed
during carbon bed regeneration cycle.
regeneration cycle(s) 2. Record and report the total
[63.114(b)(3)], and. regeneration stream mass flow during
each carbon bed regeneration cycle
during the period of the TRE
determination--NCS.
3. Report all carbon bed regeneration
cycles when the total regeneration
stream mass flow is outside the range
established in the NCS or operating
permit--PR.
Temperature of the carbon 1. Records of the temperature of the
bed after regeneration carbon bed after each regeneration.
[and within 15 minutes of 2. Record and report the temperature of
completing any cooling the carbon bed after each regeneration
cycle(s)] [63.114(b)(3)]. during the period of the TRE
determination--NCS.
3. Report all carbon bed regeneration
cycles during which temperature of the
carbon bed after regeneration is outside
the range established in the NCS or
operating permit--PR.
All recovery devices (as an alternative Concentration level or 1. Continuous records.
to the above). reading indicated by an 2. Record and report the concentration
organic monitoring device level or reading averaged over the full
at the outlet of the period of the TRE determination--NCS.
recovery device [63.114 3. Record the daily average concentration
(b)]. level or reading for each operating day.
e
4. Report all daily average concentration
levels or readings that are outside the
range established in the NCS or
operating permit--PR.
----------------------------------------------------------------------------------------------------------------
a Regulatory citations are listed in brackets.
b Alternatively, these devices may comply with the organic monitoring device provisions listed at the end of
this table under ``All Recovery Devices.''
c ``Continuous records'' is defined in Sec. 63.111 of this subpart.
d NCS=Notification of Compliance Status described in Sec. 63.152 of this subpart.
e The daily average is the average of all values recorded during the operating day. If all recorded values
during an operating day are within the range established in the NCS or operating permit, a statement to this
effect can be recorded instead of the daily average.
f PR=Periodic Reports described in Sec. 63.152 of this subpart.
Table 7.--Transfer Operations--Monitoring, Recordkeeping, and Reporting Requirements for Complying with 98
Weight-Percent Reduction of Total Organic Hazardous Air Pollutants Emissions or a Limit of 20 Parts Per Million
by Volume
----------------------------------------------------------------------------------------------------------------
Recordkeeping and reporting requirements
Control device Parameters to be monitored for monitored parameters
-------------------------------------------------------a--------------------------------------------------------
Thermal incinerator..................... Firebox temperature b 1. Continuous records c during loading.
[63.127(a)(1)(i)]. 2. Record and report the firebox
temperature averaged over the full
period of the performance test--NCS.d
3. Record the daily average firebox
temperature for each operating day.e
4. Report daily average temperatures that
are outside the range established in the
NCS or operating permit and all
operating days when insufficient
monitoring data are collected f--PR.g
Catalytic incinerator................... Temperature upstream and 1. Continuous records during loading.
downstream of the catalyst 2. Record and report the upstream and
bed [63.127(a)(1)(ii)]. downstream temperatures and the
temperature difference across the
catalyst bed averaged over the full
period of the performance test--NCS.
3. Record the daily average upstream
temperature and temperature difference
across catalyst bed for each operating
day.e
4. Report all daily average upstream
temperatures that are outside the range
established in the NCS or operating
permit--PR.
5. Report all daily average temperature
differences across the catalyst bed that
are outside the range established in the
NCS or operating permit--PR.
6. Report all operating days when
insufficient monitoring data are
collected.f
Boiler or process heater with a design Firebox temperature b 1. Continuous records during loading.
heat input capacity less than 44 [63.127(a)(3)]. 2. Record and report the firebox
megawatts and vent stream is not temperature averaged over the full
introduced with or as the primary fuel. period of the performance test--NCS.
3. Record the daily average firebox
temperature for each operating day.e
4. Report all daily average firebox
temperatures that are outside the range
established in the NCS or operating
permit and all operating days when
insufficient data are collected f--PR.
[[Page 2782]]
Flare................................... Presence of a flame at the 1. Hourly records of whether the monitor
pilot light [63.127(a)(2)]. was continuously operating and whether
the pilot flame was continuously present
during each hour.
2. Record and report the presence of a
flame at the pilot light over the full
period of the compliance determination--
NCS.
3. Record the times and durations of all
periods when all pilot flames are absent
or the monitor is not operating.
4. Report the duration of all periods
when all pilot flames of a flare are
absent--PR.
Scrubber for halogenated vent streams pH of scrubber effluent 1. Continuous records during loading
(Note: Controlled by a combustion [63.127(a)(4)(i)], and. 2. Record and report the pH of the
device other than a flare). scrubber effluent averaged over the full
period of the performance test--NCS
3. Record the daily average pH of the
scrubber effluent for each operating
day.e
4. Report all daily average pH values of
the scrubber effluent that are outside
the range established in the NCS or
operating permit and all operating days
when insufficient monitoring data are
collected f--PR.
Scrubber liquid and gas 1. Continuous records during loading of
flow rates scrubber liquid flow rate.
[63.127(a)(4)(ii)]. 2. Record and report the scrubber liquid/
gas ratio averaged over the full period
of the performance test--NCS.
3. Record the daily average scrubber
liquid/gas ratio for each operating
day.e
4. Report all daily average scrubber
liquid/gas ratios that are outside the
range established in the NCS or
operating permit and all operating days
when insufficient monitoring data are
collected f--PR.
Absorber h.............................. Exit temperature of the 1. Continuous records during loading.
absorbing liquid 2. Record and report the exit temperature
[63.127(b)(1)], and. of the absorbing liquid averaged over
the full period of the performance test--
NCS.
3. Record the daily average exit
temperature of the absorbing liquid for
each operating day.e
4. Report all daily average exit
temperatures of the absorbing liquid
that are outside the range established
in the NCS or operating permit and all
operating days when insufficient
monitoring data are collected f--PR.
Exit specific gravity 1. Continuous records during loading.
[63.127(b)(1)]. 2. Record and report the exit specific
gravity averaged over the full period of
the performance test--NCS.
3. Record the daily average exit specific
gravity for each operating day.e
4. Report all daily average exit specific
gravity values that are outside the
range established in the NCS or
operating permit and all operating days
when insufficient monitoring data are
collected f--PR.
Condenser h............................. Exit (product side) 1. Continuous records during loading.
temperature [63.127(b)(2)]. 2. Record and report the exit temperature
averaged over the full period of the
performance test--NCS.
3. Record the daily average exit
temperature for each operating day.e
4. Report all daily average exit
temperatures that are outside the range
established in the NCS or operating
permit and all operating days when
insufficient monitoring data are
collected f--PR.
Carbon adsorber h....................... Total regeneration stream 1. Record of total regeneration stream
mass or volumetric flow mass flow for each carbon bed
during carbon bed regeneration cycle.
regeneration cycle(s) 2. Record and report the total
[63.127(b)(3)], and. regeneration stream mass flow during
each carbon bed regeneration cycle
during the period of the performance
test--NCS.
3. Report all carbon bed regeneration
cycles when the total regeneration
stream mass flow is outside the range
established in the NCS or operating
permit and all operating days when
insufficient monitoring data are
collected f--PR.
Temperature of the carbon 1. Records of the temperature of the
bed after regeneration carbon bed after each regeneration.
[and within 15 minutes of 2. Record and report the temperature of
completing any cooling the carbon bed after each regeneration
cycle(s)] [63.127(b)(3)]. during the period of the performance
test--NCS.
3. Report all the carbon bed regeneration
cycles during which the temperature of
the carbon bed after regeneration is
outside the range established in the NCS
or operating permit and all operating
days when insufficient monitoring data
are collected f--PR.
[[Page 2783]]
All recovery devices (as an alternative Concentration level or 1. Continuous records during loading.
to the above). reading indicated by an 2. Record and report the concentration
organic monitoring device level or reading averaged over the full
at the outlet of the period of the performance test--NCS.
recovery device 3. Record the daily average concentration
[63.127(b)]. level or reading for each operating
day.d
4. Report all daily average concentration
levels or readings that are outside the
range established in the NCS or
operating permit and all operating days
when insufficient monitoring data are
collected f--PR.
All control devices and vapor balancing Presence of flow diverted 1. Hourly records of whether the flow
systems. to the atmosphere from the indicator was operating and whether a
control device diversion was detected at any time
[63.127(d)(1)] or. during each hour.
2. Record and report the duration of all
periods when the vent stream is diverted
through a bypass line or the monitor is
not operating--PR.
Monthly inspections of 1. Records that monthly inspections were
sealed valves performed.
[63.127(d)(2)]. 2. Record and report all monthly
inspections that show the valves are
moved to the diverting position or the
seal has been changed.
----------------------------------------------------------------------------------------------------------------
a Regulatory citations are listed in brackets.
b Monitor may be installed in the firebox or in the ductwork immediately downstream of the firebox before any
substantial heat exchange is encountered.
c ``Continuous records'' is defined in Sec. 63.111 of this subpart.
d NCS = Notification of Compliance Status described in Sec. 63.152 of this subpart.
e The daily average is the average of all recorded parameter values for the operating day. If all recorded
values during an operating day are within the range established in the NCS or operating permit, a statement to
this effect can be recorded instead of the daily average.
f The periodic reports shall include the duration of periods when monitoring data are not collected for each
excursion as defined in Sec. 63.152(c)(2)(ii)(A) of this subpart.
g PR = Periodic Reports described in Sec. 63.152 of this subpart.
h Alternatively, these devices may comply with the organic monitoring device provisions listed at the end of
this table under ``All Recovery Devices.''
Table 11.--Wastewater--Inspection and Monitoring Requirements for Waste Management Units
----------------------------------------------------------------------------------------------------------------
Frequency of
To comply with Inspection or monitoring inspection or Method
requirement monitoring
----------------------------------------------------------------------------------------------------------------
Tanks:
63.133(b)(1)................... Inspect fixed roof and all Initially Semi- Visual.
openings for leaks. annually.
63.133(c)...................... Inspect floating roof in See Sec. 63.120 Visual.
accordance with Secs. (a)(2) and (a)(3).
63.120 (a)(2) and (a)(3).
63.133(d)...................... Measure floating roof seal ...................... See Sec. 63.120
gaps in accordance with (b)(2)(i) through
Secs. 63.120 (b)(2)(i) (b)(4).
through (b)(4).
--Primary seal gaps........ Once every 5 years
Initially Annually.
--Secondary seal gaps...... ......................
63.133(f) 63.133(g)................ Inspect wastewater tank for Initially Semi- Visual.
control equipment failures annually.
and improper work
practices.
Surface impoundments:
63.134(b)(1)................... Inspect cover and all Initially Semi- Visual.
openings for leaks. annually.
63.134(c)...................... Inspect surface impoundment Initially Semi- Visual.
for control equipment annually.
failures and improper work
practices.
Containers:
63.135(b)(1), 63.135(b)(2) (ii) Inspect cover and all Initially Semi- Visual.
openings for leaks. annually.
63.135(d)(1)................... Inspect enclosure and all Initially Semi- Visual.
openings for leaks. annually.
63.135(e)...................... Inspect container for Initially Semi- Visual.
control equipment failures annually.
and improper work
practices.
Individual Drain Systemsa:
63.136(b)(1)................... Inspect cover and all Initially Semi- Visual.
openings to ensure there annually.
are no gaps, cracks, or
holes.
63.136(c)...................... Inspect individual drain Initially Semi- Visual.
system for control annually.
equipment failures and
improper work practices.
63.136(e)(1)................... Verify that sufficient Initially Semi- Visual.
water is present to annually.
properly maintain
integrity of water seals.
[[Page 2784]]
63.136(e)(2), 63.136(f)(1)..... Inspect all drains using Initially Semi- Visual.
tightly-fitted caps or annually.
plugs to ensure caps and
plugs are in place and
properly installed.
63.136(f)(2)................... Inspect all junction boxes Initially Semi- Visual or smoke test
to ensure covers are in annually. or other means as
place and have no visible specified.
gaps, cracks, or holes.
63.136(f)(3)................... Inspect unburied portion of Initially Semi- Visual.
all sewer lines for cracks annually.
and gaps.
Oil-water separators:
63.137(b)(1)................... Inspect fixed roof and all Initially Semi- Visual.
openings for leaks. annually.
63.137(c)...................... Measure floating roof seal Initiallyb............ See 40 CFR
gaps in accordance with 40 60.696(d)(1).
CFR 60.696(d)(1).
--Primary seal gaps........ Once every 5 years....
63.137(c)...................... --Secondary seal gaps...... Initiallyb Annually...
63.137(d)...................... Inspect oil-water separator Initially Semi- Visual.
for control equipment annually.
failures and improper work
practices.
----------------------------------------------------------------------------------------------------------------
a As specified in Sec. 63.136(a), the owner or operator shall comply with either the requirements of Sec.
63.136 (b) and (c) or Sec. 63.136 (e) and (f).
b Within 60 days of installation as specified in Sec. 63.137(c).
Table 12.--Monitoring Requirements for Treatment Processes
----------------------------------------------------------------------------------------------------------------
To comply with Parameters to be monitored Frequency Methods
----------------------------------------------------------------------------------------------------------------
1. Required mass removal of Table 8 Appropriate parameters as Appropriate frequency Appropriate methods as
and/or Table 9 compound(s) from specified in Sec. as specified in Sec. specified in Sec.
wastewater treated in a properly 63.143(c) and approved by 63.143 and as 63.143 and as
operated biological treatment unit permitting authority. approved by approved by
63.138(f), 63.138(g). permitting authority. permitting authority.
2. Design steam stripper 63.138(d). Steam flow rate............ Continuously.......... Integrating steam flow
monitoring device
equipped with a
continuous recorder.
Wastewater feed mass flow Continuously.......... Liquid flow meter
rate. installed at stripper
influent and equipped
with a continuous
recorder.
Wastewater feed temperature Continuously.......... Liquid temperature
monitoring device
installed at stripper
influent and equipped
with a continuous
recorder.
3. Alternative monitoring Other parameters may be ......................
parameters. monitored upon approval
from the Administrator in
accordance with the
requirements specified in
Sec. 63.151(f).
----------------------------------------------------------------------------------------------------------------
Table 13.--Wastewater--Monitoring Requirements for Control Devices
----------------------------------------------------------------------------------------------------------------
Monitoring equipment Parameters to be
Control Device required monitored Frequency
----------------------------------------------------------------------------------------------------------------
All control devices................ 1. Flow indicator installed 1. Presence of flow Hourly records of
at all bypass lines to the diverted from the whether the flow
atmosphere and equipped control device to the indicator was
with continuous recorder b atmosphere or. operating and whether
or. a diversion was
detected at any time
during each hour
2. Valves sealed closed 2. Monthly inspections Monthly.
with car-seal or lock-and- of sealed valves.
key configuration.
Thermal Incinerator................ Temperature monitoring Firebox temperature... Continuous.
device installed in
firebox or in ductwork
immediately downstream of
fireboxa and equipped with
a continuous recorderb.
Catalytic Incinerator.............. Temperature monitoring 1. Temperature Continuous.
device installed in gas upstream of catalyst
stream immediately before bed or.
and after catalyst bed and 2. Temperature
equipped with a continuous difference across
recorderb. catalyst bed.
[[Page 2785]]
Flare.............................. Heat sensing device Presence of a flame at Hourly records of
installed at the pilot the pilot light. whether the monitor
light and equipped with a was continuously
continuous recordera. operating and whether
the pilot flame was
continuously present
during each hour.
Boiler or process heater <44 temperature="" monitoring="" combustion="" temperature="" continuous.="" megawatts="" and="" vent="" stream="" is="" not="" device="" installed="" in="" mixed="" with="" the="" primary="" fuel.="">a and equipped with
continuous recorderb.
Condenser.......................... Temperature monitoring Condenser exit Continuous.
device installed at (product side)
condenser exit and temperature.
equipped with continuous
recorderb.
Carbon adsorber (regenerative)..... Integrating regeneration Total regeneration For each regeneration
stream flow monitoring stream mass or cycle, record the
device having an accuracy volumetric flow total regeneration
of 10 during carbon bed stream mass or
percent, and. regeneration cycle(s). volumetric flow.
Carbon bed temperature Temperature of carbon For each regeneration
monitoring device. bed after cycle and within 15
regeneration [and minutes of completing
within 15 minutes of any cooling cycle,
completing any record the carbon bed
cooling cycle(s)]. temperature.
Carbon adsorber (Non-regenerative). Organic compound Organic compound Daily or at intervals
concentration monitoring concentration of no greater than 20
device. c. adsorber exhaust. percent of the design
carbon replacement
interval, whichever
is greater.
Alternative monitoring parameters.. Other parameters may be ....................
monitored upon approval
from the Administrator in
accordance with the
requirements in Sec.
63.143(e)(3).
----------------------------------------------------------------------------------------------------------------
a Monitor may be installed in the firebox or in the ductwork immediately downstream of the firebox before any
substantial heat exchange is encountered.
b ``Continuous recorder'' is defined in Sec. 63.111 of this subpart.
c As an alternative to conducting this monitoring, an owner or operator may replace the carbon in the carbon
adsorption system with fresh carbon at a regular predetermined time interval that is less than the carbon
replacement interval that is determined by the maximum design flow rate and organic concentration in the gas
stream vented to the carbon adsorption system.
Table 14a [Reserved]
Table 14b [Reserved]
Table 15.--Wastewater--Information on Table 8 and/or Table 9 Compounds To Be Submitted With Notification of Compliance Status for Process Units at New and/or Existing Sources a,b
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Concentration of
Stream table 8 and/or Treatment Waste management
Process unit identification code identification table 9 Flow rate (lpm) Group 1 or Group 2 Compliance process(es) unit(s) Intended control
c code compound(s) (ppmw) e,f g approach