[Federal Register Volume 61, Number 236 (Friday, December 6, 1996)]
[Proposed Rules]
[Pages 64647-64651]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-31124]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 52
[FRL-5660-6]
Clean Air Act Approval and Promulgation of State Implementation
Plan for Colorado; Oxygenated Gasoline Program; Carbon Monoxide State
Implementation Plans for Denver and Longmont--Supplemental Notice; and
PM10 State Implementation Plan for Denver--Supplemental Notice
AGENCY: Environmental Protection Agency (EPA).
ACTION: Proposed rulemaking.
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SUMMARY: The Environmental Protection Agency (``EPA'' or the
``Agency'') is proposing to approve a State Implementation Plan (SIP)
revision submitted by the State of Colorado that would shorten the
season for the oxygenated gasoline program from four to three and a
half months. The State has requested that EPA approve Colorado's
elimination of the requirement for oxygenated gasoline use during the
last two weeks of February for the Denver-Boulder, Fort Collins-
Loveland, and Colorado Springs Metropolitan Statistical Areas (MSA).
Based on Colorado's revision to its oxygenated gasoline requirements,
EPA is reproposing approval of the Denver Carbon Monoxide (CO) SIP,
Longmont CO SIP, and Denver PM10 SIP. EPA is taking the action to
shorten the oxygenated gasoline season under Sections 110 and 211(m) of
the Clean Air Act.
DATES: Comments must be received on or before January 6, 1997.
ADDRESSES: Comments may be mailed to Richard R. Long, Director, Air
Programs, USEPA Region VIII (P2-A), 999 18th Street--Suite 500, Denver,
Colorado 80202-2466. Copies of the documents relevant to this action
are available for public inspection during normal business hours at the
above address. Interested persons wanting to examine these documents
should make an appointment with the appropriate contact person at least
24 hours before the visiting day.
FOR FURTHER INFORMATION CONTACT: Scott Lee, at (303) 312-6736 or via e-
mail at lee.scott@epamail.epa.gov. While information may be requested
via e-mail, comments must be submitted in writing to the EPA Region
VIII address above.
SUPPLEMENTARY INFORMATION:
I. Background
Section 211(m) of the Act requires that certain states submit
revisions to their SIPs, and implement oxygenated gasoline programs, no
later than November 1, 1992. This requirement applies to all states
with carbon monoxide nonattainment areas with design values of 9.5
parts per million or more based generally on 1988 and 1989 data. The
Act requires that the winter oxygenated gasoline program apply to all
gasoline sold in the larger of the Consolidated Metropolitan
Statistical Area (CMSA) or Metropolitan Statistical Area (MSA) in which
the nonattainment area is located. (In Colorado, these areas are the
Colorado Springs MSA, Fort Collins-Loveland MSA, and the Denver-Boulder
CMSA.) Gasoline for the specified control area(s) must contain not less
than 2.7% oxygen by weight during that portion of the year in which the
areas are prone to high ambient concentrations of carbon monoxide.
Under Section 211(m)(2), the length of the control period,
established by the EPA Administrator, shall not be less than four
months unless a state can demonstrate that, because of meteorological
conditions, a reduced control period will assure that there will be no
carbon monoxide exceedances outside of such reduced period. EPA
guidance \1\ identified an appropriate control period for Colorado, to
run from the first day of November through the last day of February.
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\1\ See ``Guidelines for Oxygenated Gasoline Credit Programs and
Guidelines on Establishment of Control Periods under Section 211(m)
of the Clean Air Act as Amended--Notice of Availability,'' 57 FR
47849 (October 20, 1992).
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On November 26, 1992, the State of Colorado submitted to EPA a
revision to Regulation No. 13 (Colorado had an existing state oxygen
gasoline program), which updated Colorado's oxygenated gasoline program
to meet federal guidelines. The November 26, 1992 SIP revision provided
for a 2.7% minimum oxygen content by weight program and established a
control period in accordance with the EPA guidance. EPA proposed
approval of this SIP revision on January 11, 1994 (59 FR 1513) and
finalized approval on July 25, 1994 (59 FR 37698) in conjunction with a
limited approval of Colorado's PM10 SIP.
On July 11, 1994, Governor Roy Romer submitted comprehensive
revisions to the Colorado SIP. Included in the comprehensive revision
was a commitment to revise Regulation No. 13, Colorado Oxygenated
Gasoline Program. The State's commitment, which it has since met, was
to adopt and implement a 3.1% oxygenated fuels program, providing
additional benefit over the 2.7% program already required in the area
by Section 211(m) of the Act. The State determined it needed the
additional benefit to ensure attainment of the CO standard in Denver by
the applicable attainment date.
The Colorado Air Quality Control Commission (AQCC) revised
Regulation No. 13 in two steps. On July 19, 1994, the AQCC revised
Regulation No. 13 to incorporate the ``maximum blending'' approach for
the winter of 1994-95. This approach requires gasoline suppliers using
methyl tertiary butyl ether (MTBE) as an oxygenate to blend at the 2.7%
oxygen level (the maximum allowed by Federal regulations), and
suppliers using ethanol as an oxygenate to blend at the 3.5% oxygen
level (also the maximum allowed by Federal regulations). The market
share of ethanol in the Denver area has exceeded 50% in recent years,
and this approach is expected to result in at least a 3.1% oxygen
content during each winter season. On October 20, 1994, the AQCC
revised Regulation No. 13 to incorporate a more complex 3.1%
``averaging'' program. If the maximum blending approach should fail to
provide for at least a 3.1% oxygen content, the SIP revision provides
that in subsequent winter seasons the averaging program will take
effect. On September 29, 1995, the Governor submitted both revisions to
EPA for approval. EPA found the submittal complete on November 30,
1995. On July 9, 1996, EPA proposed approval of these revisions as a
control measure for the Denver CO SIP and a
[[Page 64648]]
contingency measure for the Longmont CO SIP \2\ (61 FR 36004).
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\2\ For the Longmont CO SIP, the State also included the
previously approved 2.7% oxygenated gasoline program as a control
measure for the attainment demonstration. See 61 FR 36004.
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On October 19, 1995, the AQCC held a public hearing and adopted a
SIP revision (revision to Regulation No. 13) based on the provision of
section 211(m)(2) that allows EPA to reduce the oxygenated gasoline
control period if the State can demonstrate that, because of
meteorological conditions, a reduced period will assure that there will
be no exceedances of the carbon monoxide standard outside of such
reduced period. The revision eliminates the oxygenated gasoline program
requirements for the last two weeks of February, otherwise leaving
Colorado's program requirements unchanged. The Governor submitted the
revision to EPA for approval on December 22, 1995 and indicated that
the revision superseded and replaced all previous versions of
Regulation No. 13.
II. EPA Analysis of State Submittal
The applicable Clean Air Act requirements and EPA's rationale for
its proposed actions are discussed below.
A. Section 211(m)(2) Demonstration
Section 211(m)(2) of the Clean Air Act states the Administrator may
reduce the oxygenated gasoline control period below the minimum four
months ``if the State can demonstrate that because of meteorological
conditions, a reduced period will assure that there will be no
exceedances of the carbon monoxide standard outside of such reduced
period.''
Based on this provision, EPA required the State to demonstrate,
based on worst-case meteorology for Denver for the last 21 years (as
indicated by daily peak 8-hour CO concentrations), at least a 95%
probability that there would be no exceedances of the CO standard
during the last two weeks of February as a result of the shortening of
the control period. EPA believes that to implement the statutory
requirement of assuring no exceedances it is reasonable to require a
State to show a very high probability of no exceedances and that 95% is
a reasonable threshold for the State's demonstration here. Given the
limitations of statistical analysis and the problems associated with
proving a negative, EPA believes that a higher threshold would be
inappropriate. EPA has not determined whether a lower threshold would
provide sufficient assurance that there would be no exceedances.
EPA believes the selected approach is conservative in assuring no
exceedances of the CO standard. The risk analysis is based on worst-
case conditions, and assumes that no oxygenates are present in gasoline
beginning on February 14. However, because 3.1% oxygen content
requirements are enforced at both retail outlets and at the terminals
that supply retail outlets until the end of the control period,
oxygenated gasoline continues to be supplied to retail outlets from the
terminals after the end of the control period. Historically, the
presence of oxygenates has tapered off over a two week period after the
control period ends. EPA expects this trend to continue. Therefore,
some level of oxygenates will be in gasoline and CO reductions will
continue to be realized throughout the two-week period for which
control requirements are being eliminated.
The State performed an analysis of the probability of a carbon
monoxide exceedance in the Denver area during the last two weeks of
February 1996 assuming no oxygenates in automotive fuels and all other
elements of the Denver CO SIP in place. The analysis was based on a
climatology of 21 years of measured daily peak carbon monoxide
concentrations at the CAMP monitoring site in downtown Denver for the
two weeks of interest. The high concentrations at the CAMP site have
generally been the highest measured at CO monitoring sites in the
Denver-Boulder area during the last two weeks of February. CAMP has
also shown the greatest number of exceedances of the CO NAAQS during
this two-week period. The twenty-one year period of record was
sufficiently long to provide statistically realistic estimates of
worst-case atmospheric dispersion conditions. Carbon monoxide emissions
in Denver are expected to decrease between 1996 and 2005, and are
expected to remain below 1996 levels at least through 2015, because a
cleaner vehicle fleet is projected to more than offset the effect of
increasing traffic volumes. Thus, the calculated probability of a CO
NAAQS exceedance is at a maximum in 1996 at least through 2015. EPA
does not believe it is necessary or reasonable to project beyond 2015
to meet the statutory requirement of assuring no exceedances, given the
increasing uncertainty inherent in such long-range forecasting, and
believes that a shorter period might be adequate.
In order to normalize the effects of emissions changes over the 21-
year study period, measured concentrations were adjusted to reflect
estimated changes in CO emissions between the measurement year and
1996. The resulting analysis provided a distribution of concentrations
that would have occurred had the same historical meteorological
conditions occurred at 1996 emission rates, without oxygenated fuels.
The State's analysis, using three different statistical methods, showed
that there would have been between a 3 and 5% probability of a CO NAAQS
exceedance during the last two weeks of February 1996 if oxygenated
fuels had not been in use. As noted above, due to the effects of fleet
turnover, this 3 to 5% probability should represent the maximum
probability of an exceedance during the last two weeks of February at
least through 2015, and the probability should in fact decrease between
1996 and 2005.
For the Colorado Springs and Fort Collins-Loveland areas, if the
oxygenated gasoline program is eliminated during the last two weeks of
February, the probability of an exceedance during those two weeks is
lower than it is for the Denver area. Compared to the Denver area,
these areas have experienced significantly fewer exceedances of the CO
standard and significantly lower ``high'' concentrations over the
relevant time frame. Thus, the probability of an exceedance in the last
two weeks of February 1996 in the Colorado Springs area and the Fort
Collins-Loveland area, if the oxygenated gasoline program had been
eliminated, would have been less than the 3 to 5% projected at the CAMP
monitor. The probability is expected to decrease in years after 1996
due to fleet turnover.
The State's analysis meets the requirements discussed above and,
thus, EPA can approve the shortening of the control period. However, if
an exceedance occurs during the last two weeks of February, EPA intends
to reevaluate this determination and consider calling for a SIP
revision.
B. Impact on Denver and Longmont Carbon Monoxide SIPs
On July 9, 1996, EPA proposed approval of the Denver and Longmont
CO SIPs. Subsequent to this proposal, EPA became aware that the version
of Regulation No. 13 that was a control measure for Denver and a
contingency measure for Longmont had been replaced by the October 19,
1995 version of Regulation No. 13. The two versions are identical
except that the October 19, 1995 version eliminates the last two weeks
of February from the program. In addition, for the Longmont CO SIP, the
State took credit in the attainment demonstration for the 2.7%
oxygenated gasoline program contained
[[Page 64649]]
in the version of Regulation No. 13 that EPA approved on July 25, 1994
(59 FR 37698). The October 19, 1995 Regulation No. 13 replaces the four
month, 2.7% program with the three-and-a-half month, 3.1% program.
Hence, for purposes of the Denver and Longmont CO SIPs, EPA is
publishing this supplemental notice to announce EPA's proposal to
approve the SIPs with the October 19, 1995 version of Regulation No. 13
substituted for the prior versions. The analysis regarding the CO SIPs
remains as described in the July 9, 1996 proposal, except that EPA
explains below the basis for its conclusion that the elimination of the
last two weeks of the oxygenated gasoline program does not affect the
validity of the attainment demonstration for the Denver CO SIP or the
attainment demonstration and contingency measures for the Longmont CO
SIP.
1. Denver CO SIP Attainment Demonstration
The attainment demonstration is based on adverse meteorological
conditions that occurred on January 15, 1988, and December 5, 1988. The
State chose these dates because they represent the highest CO
concentration episodes that were observed between January 1988 and
January 1991.3 The attainment demonstration is based on the
presumption that if the standard is attained under the conditions
present during these highest ranking CO episodes, it will also be
attained for the remainder of the winter season. This is consistent
with EPA policy regarding CO attainment demonstrations. None of the top
forty-eight ranked episodes during the 1988 to 1991 period occurred
during the last two weeks of February. Concentrations during the
highest-ranked late February episodes were much lower than those
recorded during the highest episodes in December and January.4 The
maximum calculated incremental increase (1.85 ppm) in CO concentration
from non-oxygenated fuel vehicles would not be sufficient to increase
total CO concentrations above 9.0 ppm during the last two weeks of
February in the attainment year. Thus, NAAQS attainment would be
assured during the last two weeks of February 2000 even without the
oxygenated gasoline program.
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\3\ EPA guidance calls for the use of three years of monitoring
data as the basis for modeling attainment. See ``Guideline for
Regulatory Application of the Urban Airshed Model for Area-wide
Carbon Monoxide,'' EPA-450/4-92-011a, June 1992.
\4\ The highest value recorded in the 1988 to 1991 period was
18.7 ppm. The 48th highest value during the 1988 to 1991 period was
9.0 ppm. Since the highest-ranked episode during the last two weeks
of February was not within the top 48 values overall, it was lower
than 9.0 ppm and was much lower than 18.7 ppm.
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2. Longmont CO SIP
For the Longmont CO SIP, the State relied on the preexisting 2.7%
oxygenated gasoline program as one of the control measures in the
attainment demonstration and the State selected the 3.1% oxygenated
gasoline program as the contingency measure. EPA believes neither
measure is necessary for the last two weeks of February for the reasons
discussed below.
With respect to the attainment demonstration, the State calculated
a second high value at the end of 1995 (the attainment date) of 6.97
ppm CO. This second high value was calculated to occur on January 27,
1995; high values for the last two weeks of February were even lower.
However, even if one were to assume this second high value occurred
during the last two weeks of February, the elimination of the 2.7%
oxygenated fuels program would not have caused the second high value to
exceed the CO standard. Since fleet turnover is expected to
progressively reduce CO concentrations in future years, the elimination
of the 2.7% oxygenated gasoline program during the last two weeks of
February will also not affect maintenance of the CO standard in the
Longmont area.
With respect to the contingency measure, Longmont has never
recorded an exceedance of the CO standard in February. The highest
value recorded in February was 8.9 ppm, recorded on February 13, 1988,
during the special monitoring study conducted in 1988 and 1989. The
federal motor vehicle control program and the enhanced inspection/
maintenance program have led to significant reductions in emissions
since that time, and these reductions are expected to continue in
future years due to fleet turnover. Because Longmont has never had
values over the CO standard during the last two weeks of February, and
because data in recent years have not even approached the standard
during the last two weeks in February, EPA has determined that it is
not necessary for the State to require an oxygenated gasoline program
during the last two weeks of February as a contingency measure in the
Longmont CO SIP.
C. Impact on the Denver PM10 SIP
On October 3, 1996, EPA proposed approval of the Denver PM10
SIP. As with the Denver CO SIP, EPA became aware after proposing
approval of the PM10 SIP that the version of Regulation No. 13
that comprised a portion of the Denver PM10 SIP had been replaced
by the October 19, 1995 version of Regulation No. 13. As noted above,
the October 19, 1995 version eliminates the last two weeks from the
program and calls for a 3.1% program rather than a 2.7% program. Hence,
for the purposes of the Denver PM10 SIP, EPA is publishing this
supplemental notice to propose to approve the Denver PM10 SIP with
the October 19, 1995 version of Regulation No. 13 substituted for the
prior version. The analysis regarding the Denver PM10 SIP remains
as described in the October 3, 1996 proposal, except that EPA explains
below the basis for its conclusion that the elimination of the last two
weeks of the oxygenated gasoline program does not affect the validity
of the PM10 SIP.
The modeling analysis for the PM10 SIP attainment
demonstration used a gridded emissions inventory for the Denver
Metropolitan area and five years of historical meteorological data from
Stapleton airport. To ensure accuracy, the model was tested by
comparing modeled PM10 concentrations with those actually measured
at PM10 monitoring sites during the base years (1984-1989). Model
evaluation testing showed that the PM10 modeling system met
published EPA criteria for accuracy. In the PM10 SIP attainment
demonstration runs, the emission inventory was projected to the year
1995 and included emission reductions related to the proposed PM10
control measures. Because five years of meteorological data were used,
the 24-hour PM10 NAAQS is met when the predicted sixth highest
PM10 concentration at all receptor locations is less than 150
g/m3. The final SIP modeling results showed a sixth
highest 1995 concentration of 147.8 g/m3 near the CAMP
monitoring station in Downtown Denver.
To estimate the effect of shortening the oxygenated fuels program
on PM10 attainment, the effect on total motor vehicle emissions
was first calculated. EPA estimated that motor vehicle exhaust
emissions of PM10 during late February would increase by
approximately 4.4% without oxygenated fuels. This emission increase was
then factored back into the PM10 SIP attainment modeling to
determine the effect on predicted concentrations. At the highest
concentration receptor locations near the CAMP monitoring site, motor
vehicle exhaust accounted for about 10.6 g/m3 of the
total predicted PM10 concentrations. A 4.4% increase in motor
vehicle exhaust would thus increase total PM10 concentrations by
0.46 g/m3. At the CAMP receptor and
[[Page 64650]]
other locations nearby, this increase would have been insufficient to
raise concentrations on the sixth highest ranked day above 150
g/m3 for the attainment year. Readers should note that
the shortening of the oxygenated gasoline program did not occur before
the PM10 attainment date.
EPA has also considered possible impacts on maintenance of the
PM10 NAAQS through the milestone date of December 31, 1997 and has
concluded that the elimination of the oxygenated gasoline program
during the last two weeks of February will not affect the maintenance
of the PM10 standard. In calculating the sixth highest PM10
concentration in the maintenance year, the State estimated the growth
in emissions and brought the concentration forward from the attainment
demonstration. This led to a value of 149.9 g/m3. If 0.46
g/m3 were added to this value, the 24-hour PM10
standard would be exceeded. However, the sixth highest value occurred
in December, not February, and thus, should be discarded. The seventh
highest value also occurred in December and should also be discarded.
However, even if this seventh highest value had occurred in the last
two weeks of February, elimination of the oxygenated gasoline program
would not have lead to an exceedance of the standard. The seventh
highest value during the attainment year was 146.4 g/m3.
Projecting to the end of 1997, this value would be 148.7 g/
m3. Adding 0.46 g/m3 to this value would not lead to
an exceedance of the standard. The highest PM10 value actually
modeled for the attainment year during the last two weeks of February
was 140.1 g/m3, significantly lower than 146.4
g/m3. Thus, the validity of the PM10 SIP is not
affected by the elimination of the last two weeks of February from the
oxygenated gasoline program.
III. Proposed Action
EPA is proposing to approve revisions to the Colorado SIP submitted
by the Governor on December 22, 1995. Specifically, EPA is proposing to
approve revised Regulation No. 13, which was adopted by the Colorado
Air Quality Control Commission on October 19, 1995. This revised
Regulation No. 13 has the effect of eliminating the oxygenated gasoline
requirements during the last two weeks of February for the Denver-
Boulder, Fort Collins-Loveland, and Colorado Springs Metropolitan
Statistical Areas. In addition, EPA is proposing to approve this
revision to Regulation No. 13 as a substitute for the October 20, 1994
version of Regulation No. 13 that EPA proposed to approve as a control
measure for the Denver CO SIP and a contingency measure for the
Longmont CO SIP on July 9, 1996 (61 FR 36004), and as a substitute for
the version of Regulation No. 13 that EPA approved on July 25, 1994 and
that the State relied on as control measure in the Longmont CO SIP (see
EPA's notice of proposed rulemaking dated July 9, 1996, 61 FR 36004)
and the Denver PM10 SIP (see EPA's notice of proposed rulemaking
dated October 3, 1996, 61 FR 51631, and EPA's limited approval of the
PM10 SIP dated July 25, 1994, 59 FR 37698). Also, based on this
revision to Regulation No. 13, EPA is reproposing to approve the
attainment demonstration in the Denver CO SIP, the attainment
demonstration in the Longmont CO SIP, and the attainment and
maintenance demonstrations in the Denver PM10 SIP.
EPA intends to take final action on this proposal to shorten the
oxygenated gasoline season at the same time as it takes final action on
the Denver and Longmont CO SIPs (proposed 61 FR 36004). EPA may take
final action on the Denver PM10 SIP (proposed 61 FR 51631) at a
separate time.
IV. Request for Public Comments
EPA is requesting comments on today's proposal. As indicated at the
outset of this document, EPA will consider any comments received by
January 6, 1997. With respect to the Denver and Longmont CO SIPs and
the Denver PM10 SIP, those wishing to comment should note that EPA is
only entertaining comment regarding these SIPs on the change to
Regulation No. 13 and any impact of this change on the approvability of
these SIPs. The comment period regarding other aspects of the CO SIP
has already closed and the comment period regarding other aspects of
the PM10 SIP was specified at 61 FR 51631 and closes on December 2,
1996.
V. Executive Order (EO) 12866
Under EO 12866, 58 FR 51735 (October 4, 1993), EPA is required to
determine whether regulatory actions are significant and therefore
should be subject to OMB review, economic analysis, and the
requirements of the EO. The EO defines a ``significant regulatory
action'' as one that is likely to result in a rule that may meet at
least one of the four criteria identified in section 3(f) of the EO,
including, under paragraph (1), that the rule may ``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, or State,
local, or tribal governments or communities.''
The SIP-related actions proposed today have been classified as
Table 3 actions for signature by the Regional Administrator under the
procedures published in the Federal Register on January 19, 1989 (54 FR
2214-2225), as revised by a July 10, 1995 memorandum from Mary Nichols,
Assistant Administrator for Air and Radiation. The Office of Management
and Budget has exempted these regulatory actions from EO 12866 review.
V. Regulatory Flexibility
Under the Regulatory Flexibility Act, 5 U.S.C. 600 et. seq., EPA
must prepare a regulatory flexibility analysis assessing the impact of
any proposed or final rule on small entities (5 U.S.C. sec. 603 and
604). Alternatively, EPA may certify that the rule will not have a
significant impact on a substantial number of small entities. Small
entities include small businesses, small not-for-profit enterprises,
and government entities with jurisdiction over populations that are
less than 50,000.
SIP revision approvals under Section 110 and Subchapter I, Part D,
of the CAA do not create any new requirements, but simply approve
requirements that the State is already imposing. Therefore, because the
Federal SIP approval process does not impose any new requirements, EPA
certifies that this proposed rule would not have a significant impact
on any small entities affected. Moreover, due to the nature of the
Federal-State relationship under the CAA, preparation of a regulatory
flexibility analysis would constitute Federal inquiry into the economic
reasonableness of State actions. The CAA forbids EPA to base its
actions concerning SIPs on such grounds. Union Electric Co. v. EPA, 427
U.S. 246, 256-266 (S. Ct. 1976); 42 U.S.C. section 7410(a)(2).
VI. Unfunded Mandates
Under Section 202 of the Unfunded Mandates Reform Act of 1995
(``Unfunded Mandates Act''), signed into law on March 22, 1995, 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, 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 EPA to establish a plan
for
[[Page 64651]]
informing and advising any small governments that may be significantly
or uniquely impacted by the rule.
EPA has determined that the SIP approval actions proposed today do
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. These Federal actions approve
pre-existing requirements under State or local law, and impose no new
requirements. Accordingly, no additional costs to State, local or
tribal governments, or to the private sector, result from these
actions.
List of Subjects in 40 CFR Part 52
Environmental protection, Air pollution control, Carbon monoxide,
Intergovernmental relations, Reporting and recordkeeping requirements.
Authority: U.S.C. 7401-7671q.
Dated: December 2, 1996.
Jack W. McGraw,
Acting Regional Administrator.
[FR Doc. 96-31124 Filed 12-5-96; 8:45 am]
BILLING CODE 6560-50-P
