2012-3150. Air Quality Designations for the 2010 Primary Nitrogen Dioxide (NO2

AGENCY:

Environmental Protection Agency (EPA).

ACTION:

Final rule.

SUMMARY:

This rule establishes air quality designations for all areas in the United States for the 2010 Primary Nitrogen Dioxide (NO₂) National Ambient Air Quality Standards (NAAQS). Based on air quality monitoring data, the EPA is issuing this rule to designate all areas of the country as “unclassifiable/attainment” for the 2010 NO₂ NAAQS. The EPA is designating areas as “unclassifiable/attainment” to mean that available information does not indicate that the air quality in these areas exceeds the 2010 NO₂ NAAQS.

DATES:

The effective date of this rule is February 29, 2012.

ADDRESSES:

The EPA has established a docket for this action under Docket ID No. EPA-HQ-OAR-2011-0572. All documents in the docket are listed in the index at http://www.regulations.gov. Although listed in the index, some information is not publicly available, i.e., Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Certain other material, such as copyrighted material, is not placed on the Internet and will be publicly available only in hard copy form. Publicly available docket materials are available either electronically in the docket or in hard copy at the Docket, EPA/DC, EPA West, Room 3334, 1301 Constitution Ave. NW., Washington, DC. The Public Reading Room is open from 8:30 a.m. to 4:30 p.m. Monday through Friday, excluding legal holidays. The telephone number for the Public Reading Room is [phone], and the telephone number for the Office of Air and Radiation Docket and Information Center is [phone].

In addition, the EPA has established a Web site for this rulemaking at: http://www.epa.gov/​air/​nitrogenoxides/​designations. The Web site includes the EPA's final state and tribal designations, as well as state initial recommendation letters, the EPA modification letters, technical support documents, responses to comments and other related technical information.

FOR FURTHER INFORMATION CONTACT:

Doug Solomon, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, Mail Code C539-04, Research Triangle Park, NC 27711, phone number [phone] or by email at: [e-mail]; or Rhea Jones, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, Mail Code C539-04, Research Triangle Park, NC 27711, phone number [phone] or by email at: [e-mail].

SUPPLEMENTARY INFORMATION:

Regional Office Contacts

Region I—Alison Simcox [phone],

Region II—Kenneth Fradkin [phone],

Region III—Maria Pino [phone],

Region IV—Steve Scofield [phone],

Region V—John Summerhays [phone],

Region VI—Joe Kordzi [phone],

Region VII—Amy Algoe-Eakin [phone],

Region VIII—Catherine Roberts [phone],

Region IX—Eleanor Kaplan [phone],

Region X—Krishna Viswanathan [phone].

The public may inspect the rule and state-specific technical support information at the following locations:

Regional offices	States
Dave Conroy, Chief, Air Programs Branch, EPA New England, 1 Congress Street, Suite 1100, Boston, MA 02114-2023, [phone]	Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont.
Raymond Werner, Chief, Air Programs Branch, EPA Region 2, 290 Broadway, 25th Floor, New York, NY 10007-1866, [phone]	New Jersey, New York, Puerto Rico, and Virgin Islands.
Cristina Fernandez, Branch Chief, Air Quality Planning Branch, EPA Region 3, 1650 Arch Street, Philadelphia, PA 19103-2187, [phone]	Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, and West Virginia.
R. Scott Davis, Branch Chief, Air Planning Branch, EPA Region 4, Sam Nunn Atlanta Federal Center, 61 Forsyth Street SW., 12th Floor, Atlanta, GA 30303, [phone]	Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee.
John Mooney, Chief, Air Programs Branch, EPA Region 5, 77 West Jackson Street, Chicago, IL 60604, [phone]	Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin.
Guy Donaldson, Chief, Air Planning Section, EPA Region 6, 1445 Ross Avenue, Dallas, TX 75202, [phone]	Arkansas, Louisiana, New Mexico, Oklahoma, and Texas.
Joshua A. Tapp, Chief, Air Programs Branch, EPA Region 7, 901 North 5th Street, Kansas City, Kansas 66101-2907, [phone]	Iowa, Kansas, Missouri, and Nebraska.
Monica Morales, Leader, Air Quality Planning Unit, EPA Region 8, 1595 Wynkoop Street, Denver, CO 80202-1129, [phone]	Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming.
Lisa Hanf, Air Planning Office, EPA Region 9, 75 Hawthorne Street, San Francisco, CA 94105, [phone]	American Samoa, Arizona, California, Guam, Hawaii, Nevada, and Northern Mariana Islands.
Krishna Viswanathan, Manager, State and Tribal Air Programs, EPA Region 10, Office of Air, Waste, and Toxics, Mail Code OAQ-107, 1200 Sixth Avenue, Seattle, WA 98101, [phone]	Alaska, Idaho, Oregon, and Washington.

Table of Contents

The following is an outline of the Preamble.

I. Preamble Glossary of Terms and Acronyms

II. What is the purpose of this action?

III. What is nitrogen dioxide?

IV. What are the health concerns addressed by the NO₂ standards?

V. What are the CAA requirements for air quality designations and what action has EPA taken to meet these requirements?

VI. What guidance did the EPA issue and how did the EPA apply the statutory requirements and applicable guidance to determine area designations and boundaries?

VII. Comments

VIII. Implications of Designations for Compliance With PSD Increments for NO₂

IX. What air quality data has EPA used?

X. How do designations affect Indian country?

XI. Where can I find information forming the basis for this rule and exchanges between EPA, states, and tribes related to this rule?

XII. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review and Executive Order 13563: Improving Regulations and Regulatory Review

B. Paperwork Reduction Act

C. Regulatory Flexibility Act

D. Unfunded Mandates Reform Act

E. Executive Order 13132: Federalism

F. Executive Order 13175: Consultation and Coordination With Indian Tribal Governments

G. Executive Order 13045: Protection of Children From Environmental Health and Safety Risks

H. Executive Order 13211: Actions That Significantly Affect Energy Supply, Distribution, or Use

I. National Technology Transfer and Advancement Act (NTTAA)

J. Executive Order 12898: Federal Actions To Address Environmental Justice in Minority Populations and Low-Income Populations

K. Congressional Review Act

L. Judicial Review

I. Preamble Glossary of Terms and Acronyms

The following are abbreviations of terms used in the preamble.

APA Administrative Procedure Act

AQS Air Quality System

CAA Clean Air Act

CBI Confidential Business Information

CFR Code of Federal Regulations

DC District of Columbia

EPA Environmental Protection Agency

FR Federal Register

FRM Federal Reference Method

NAAQS National Ambient Air Quality Standards

NO₂ Nitrogen Dioxide

NTTAA National Technology Transfer and Advancement Act

OMB Office of Management and Budget

PSD Prevention of Significant Deterioration

RFA Regulatory Flexibility Act

RIA Regulatory Impact Analysis

SBA Small Business Administration

SIP State Implementation Plan

UMRA Unfunded Mandates Reform Act of 1995

TAR Tribal Authority Rule

TSD Technical Support Document

TPY Tons Per Year

U.S. United States

VCS Voluntary Consensus Standards

II. What is the purpose of this action?

The purpose of this action is to promulgate and announce initial area designations for all areas of the country for the 2010 NO₂ NAAQS based on available information, in accordance with the requirements of the Clean Air Act (CAA). The list of all areas being designated in each state, and the boundaries of each area, appear in the tables at the end of this final rule. The EPA has been working closely with the states involved in these designations and several steps have been taken to announce that this rule is available. The EPA has posted the notice on several EPA Web sites.

This notice identifies all areas of the United States (U.S.) as being designated as “unclassifiable/attainment” for the 2010 NO₂ NAAQS. The basis for designating these areas as “unclassifiable/attainment” is monitored air quality data from calendar years 2008-2010 indicating no violations of the NAAQS.

The EPA and state agencies are currently working to establish an expanded network of NO₂ monitors, expected to be deployed in 2013. Once 3 years of air quality data have been collected from the expanded network, the EPA will be able to evaluate NO₂ air quality in additional locations.

III. What is nitrogen dioxide?

NO₂ is a reddish-brown, highly reactive gas that is formed in the ambient air through the oxidation of nitric oxide (NO). Nitrogen oxides (NO_X) is the term used to describe the sum of NO, NO₂, and other oxides of nitrogen. A variety of NO_X compounds and their transformation products occur both naturally and as a result of human activities. Anthropogenic (i.e., manmade) emissions of NO_X account for a large majority of all nitrogen inputs to the environment. The major sources of anthropogenic NO_X emissions are high-temperature combustion processes, such as those occurring in automobiles and power plants. Most NO_X from combustion sources (about 95 percent) are emitted as NO, which is readily converted to NO₂ in the environment; the remainder is emitted largely as NO₂. Natural sources of NO_X are lightning, biological and abiological processes in soil, and stratospheric intrusion.

IV. What are the health concerns addressed by the NO₂ standards?

Current scientific evidence links short-term NO₂ exposures, ranging from 30 minutes to 24 hours, with an array of adverse respiratory effects including increased asthma symptoms, more difficulty controlling asthma, and an increase in respiratory illnesses and symptoms. Studies also show a connection between short-term exposure and increased visits to emergency departments and hospital admissions for respiratory illnesses, particularly in populations including children, the elderly, and asthmatics.

The EPA's NAAQS for NO₂ is designed to protect against exposure to the entire group of NO_X. NO₂ is the component of greatest concern and is used as the indicator for the larger group of NO_X. (See 75 FR 6474.)

V. What are the CAA requirements for air quality designations and what action has the EPA taken to meet these requirements?

After the promulgation of a new or revised NAAQS, the EPA is required to designate areas as nonattainment, attainment, or unclassifiable, pursuant to section 107(d)(1) of the CAA. The Administrator signed a final rule revising the NO₂ NAAQS on January 22, 2010, which was published in the Federal Register on February 9, 2010, and became effective April 12, 2010. Based on the Administrator's review of the scientific evidence, including numerous studies published since the last review of the NO₂ NAAQS, and taking into consideration the comments expressed by the Clean Air Scientific Advisory Committee and the public, the Administrator set a new 1-hour NO₂ standard at the level of 100 parts per billion (ppb). In addition to establishing an averaging time and level, the Administrator also set a new form for the standard. The form for the 1-hour NO₂ standard is the 3-year average of the 98th percentile of the annual distribution of daily maximum 1-hour average concentrations. The rule also retained, with no change, the current annual average NO₂ standard of 53 ppb.

The rule also set new requirements for the placement of NO₂ monitors. The EPA and state agencies are currently working to establish an expanded network of NO₂ monitors, expected to be deployed in 2013. NO₂ concentrations near major roads are appreciably higher than those measured at monitors in the current network. Monitoring studies indicate that near-road (within about 50 meters) concentrations of NO₂ can be 30 to 100 percent higher than concentrations away from major roads.

The CAA requires the EPA to complete the initial area designation process within 2 years of promulgating a new or revised NAAQS. However, if the Administrator has insufficient information to make these designations within that time frame, the EPA has the authority to extend the designation process by up to 1 additional year.

By not later than 1 year after the promulgation of a new or revised NAAQS, each state governor is required to recommend air quality designations, including the appropriate boundaries for areas, to the EPA. The EPA reviews those state recommendations and is authorized to make any modifications the Administrator deems necessary. The statute does not define the term “necessary,” but the EPA interprets this to authorize the Administrator to modify designations that did not meet the statutory requirements or were otherwise inconsistent with the facts or analysis deemed appropriate by the EPA. If the EPA is considering modifications to a state's initial recommendation, the EPA is required to notify the state of any such intended modifications to its recommendation not less than 120 days prior to the EPA's promulgation of the final designation. If the state does not agree with the EPA's intended modification, it then has an opportunity to respond to the EPA and to demonstrate why it believes the modification proposed by the EPA is inappropriate. Even if a state fails to provide any recommendation for an area, in whole or in part, the EPA still must promulgate a designation that the Administrator deems appropriate.

Section 107(d)(1)(A)(i) of the CAA defines a nonattainment area as any area that does not meet an ambient air quality standard or that is contributing to ambient air quality in a nearby area that does not meet the standard. If an area meets either prong of this definition, then the EPA is obligated to designate the area as “nonattainment.” Section 107(d)(1)(A)(iii) provides that any area that the EPA cannot designate on the basis of available information as meeting or not meeting the standards should be designated as “unclassifiable.”

The EPA believes that section 107(d) provides the agency with discretion to determine how best to interpret the terms in the definition of a nonattainment area (e.g., “contributes to” and “nearby”) for a new or revised NAAQS, given considerations such as the nature of a specific pollutant, the types of sources that may contribute to violations, the form of the standards for the pollutant, and other relevant information. In particular, the EPA believes that the statute does not require the agency to establish bright line tests or thresholds for what constitutes “contribution” or “nearby” for purposes of designations.^[1]

Similarly, the EPA believes that the statute permits the EPA to evaluate the appropriate application of the term “area” to include geographic areas based upon full or partial county boundaries, and contiguous or non-contiguous areas, as may be appropriate for a particular NAAQS. For example, section 107(d)(1)(B)(ii) explicitly provides that the EPA can make modifications to designation recommendations for an area “or portions thereof,” and, under section 107(d)(1)(B)(iv), a designation remains in effect for an area “or portion thereof” until the EPA redesignates it.

Designation activities for federally-recognized tribes are covered under the authority of section 301(d) of the CAA. This provision of the CAA authorizes the EPA to treat eligible tribes in a similar manner as states. Pursuant to section 301(d)(2), we promulgated regulations, known as the Tribal Authority Rule (TAR), on February 12, 1999. See 63 FR 7254, codified at 40 CFR 49 (1999). That rule specifies those provisions of the CAA for which it is appropriate to treat tribes in a similar manner as states. Under the TAR, tribes may choose to develop and implement their own CAA programs, but are not required to do so. The TAR also establishes procedures and criteria by which tribes may request from the EPA a determination of eligibility for such treatment. The designations process contained in section 107(d) of the CAA is included among those provisions determined to be appropriate by the EPA for treatment of tribes in the same manner as states. Under the TAR, tribes generally are not subject to the same submission schedules imposed by the CAA on states. As authorized by the TAR, tribes may seek eligibility to submit designation recommendations to the EPA. In addition, CAA section 301(d)(4) gives the EPA discretionary authority, in cases where it determines that treatment of tribes as identical to states is “inappropriate or administratively infeasible,” to provide for direct administration by regulation to achieve the appropriate purpose.

Designation recommendations and supporting documentation for the NO₂ NAAQS were submitted by most states and a few tribes to the EPA by January 22, 2011. After receiving recommendations from states and tribes, and after reviewing and evaluating each recommendation, the EPA provided a response to the states and tribes on June 29, 2011. In these letter responses, we indicated whether the EPA intended to make modifications to the initial state or tribal recommendations and explained the EPA's reasons for making any such modifications. The EPA requested that states and tribes respond to any proposed EPA modifications by August 29, 2011. We received comments from some states suggesting changes to the EPA's proposed modifications and providing additional information. The EPA evaluated these comments, and, as a result, some of the final designations reflect further modifications to the initial state and tribal recommendations. The state and tribal letters, including the initial recommendations, the EPA's June 2011 responses to those letters, including any modifications, and the subsequent state and tribal comment letters are in the docket for this action.

Although not required by section 107(d) of the CAA, the EPA also provided an opportunity for members of the public to comment on the EPA's June 2011 response letters. In order to gather additional information for the EPA to consider before making final designations, EPA published a notice on July 7, 2011, (76 FR 39798) which invited the public to comment on the EPA's intended designations. In that notice, the EPA provided the opportunity to all interested parties other than states and tribes to submit comments by August 8, 2011. State and tribal initial recommendations and EPA's responses, including modifications, were posted on a publically accessible Web site (http://www.epa.gov/​airquality/​nitrogenoxides/​designations/​index.html). Comments from the public and EPA's responses to comments are in the docket for this action.

VI. What guidance did the EPA issue and how did the EPA apply the statutory requirements and applicable guidance to determine area designations and boundaries?

In the notice of proposed rulemaking for the revised NO₂ NAAQS (73 FR 29184), the EPA issued proposed guidance, on its approach to implementing the standard, including its approach to initial area designations. The EPA solicited comment on that guidance and, in the notice of final rulemaking (75 FR 6475), adopted guidance concerning how to designate areas for the NO₂ NAAQS. In that guidance the EPA recommended that monitoring data using the 3 most recent years of quality-assured air quality data from the current monitoring network, which would be for the years 2008-2010, be used to identify violations of the NO₂ NAAQS. The EPA is basing these final designations on monitored NO₂ concentrations from Federal Reference Method (FRM) monitors from calendar years 2008-2010.

In the guidance, the EPA stated that in the event that a current NO₂ monitor indicates a violation of the revised standards, the EPA intends to designate such areas “nonattainment” no later than 2 years following promulgation of the revised standards. The EPA also stated that it intends to designate the rest of the country as “unclassifiable” for the revised NO₂ NAAQS until sufficient air quality data is collected from a near-roadway monitoring network. Once the near-roadway network is fully deployed and 3 years of air quality data are available, the EPA has authority under the CAA to redesignate areas as appropriate from “unclassifiable” to “attainment” or “nonattainment.” The EPA anticipates that sufficient data to conduct redesignations would be available after 2015.

In the EPA's June 2011 response letters to state and tribal recommendations, the EPA stated that in response to recommendations and review of the 2008-2010 monitored NO₂ concentrations, it intended to designate all areas of the U.S. as “unclassifiable/attainment.” The EPA uses this designation in practice for initial designations to mean that available information does not indicate that the air quality in these areas exceeds the 2010 NO₂ NAAQS.

VII. Comments

In the EPA's June 2011 response letters to state and tribal recommendations, the EPA recommended that states and tribes consider implications for the prevention of significant deterioration of air quality (PSD) program when proposing their boundaries. Several states responded by providing suggested changes to their recommended boundaries. The EPA has accepted these changes and has applied them in these final designations.

The EPA received comments from one state and one trade association, both indicating that the EPA should designate areas as “attainment” rather than “unclassifiable/attainment.”

The trade association commenter stated that a designation of “attainment” signifies the air is healthy while a designation of “unclassifiable” does not. The commenter acknowledges the concern that the current monitoring network is inadequate in many instances to determine if an area meets the 2010 NO₂ NAAQS. Nonetheless, the commenter believes a designation of “attainment” is appropriate where current monitoring shows no violations. The commenter acknowledges that redesignation to “nonattainment” would be appropriate if new monitors show violations of the 2010 NO₂ NAAQS.

The second comment, from a state, restated their recommendation that their entire state should be designated as “attainment.” In their comment, they provide 2007-2010 data from seven NO₂ monitors operated in the state. The commenter points out that no single year 98th percentile has exceeded 44 percent of the 2010 NO₂ NAAQS and design values have not exceeded 42 percent of the 2010 NO₂ NAAQS.

After considering state and public comments on the EPA's June 2011 response letters to state and tribal recommendations, the EPA is finalizing designations for all areas of the U.S. as “unclassifiable/attainment.” This designation is intended to indicate that for the purposes of initial area designations, available information does not indicate that air quality in these areas exceeds the NAAQS.

Although all existing community-based monitoring sites indicate attainment with the NO₂ NAAQS, the existing NO₂ monitoring network does not fully portray or represent the NO₂ concentrations near roadways. Until more complete information on NAAQS compliance is available, the EPA does not believe a designation of “attainment” is appropriate.

VIII. Implications of Designations for Compliance With PSD Increments for NO₂

The CAA's PSD requirements are designed to ensure that economic growth will occur in a manner consistent with preserving clean air in areas not currently violating the NAAQS (see CAA sections 160-169). In such areas, new or modified major sources of NO₂ must comply with maximum allowable increases (increments) in concentrations of NO_2. In some parts of the U.S., “baseline areas” have already been established for NO₂ increment analysis under the designations associated with the existing NO₂ annual NAAQS.^[2] The boundaries for such areas are not affected by the newly designated areas listed as “unclassifiable/attainment” for the 1-hour NO₂ NAAQS. In addition, any increment baseline areas created in the future for the annual NO₂ standard should be based on the existing designations that are associated with (and continue to apply to) the NO₂ annual NAAQS.

IX. What air quality data has the EPA used?

The final NO₂ designations contained in this action are based upon air quality monitoring data from calendar years 2008-2010.

X. How do designations affect Indian country?

All counties, partial counties or Air Quality Control Regions listed in the table at the end of this document are designated as indicated. There are no areas of Indian country being designated nonattainment at this time.

XI. Where can I find information forming the basis for this rule and exchanges between the EPA, states, and tribes related to this rule?

Information providing the basis for this action and related decisions are provided in the docket for this rulemaking. The applicable EPA guidance memoranda, and copies of correspondence regarding this process between the EPA and the states, tribes, and other parties are available for review at the EPA Docket Center listed above in the addresses section of this document and on our designation Web site at http://www.epa.gov/​airquality/​nitrogenoxides/​designations/​index.html. State-specific information is available from the EPA Regional Offices.

XII. Statutory and Executive Order Reviews

Upon promulgation of a new or revised NAAQS, the CAA requires the EPA to designate areas as attaining or not attaining the NAAQS. The CAA then specifies requirements for areas based on whether such areas are attaining or not attaining the NAAQS. In this final rule, the EPA assigns designations to areas as required.

A. Executive Order 12866: Regulatory Planning and Review and Executive Order 13563: Improving Regulation and Regulatory Review

This action will respond to the requirement to promulgate air quality designations after promulgation of a NAAQS. This type of action is exempt from review under Executive Orders 12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 2011).

B. Paperwork Reduction Act

This action does not impose an information collection burden under the provisions of the Paperwork Reduction Act, 44 U.S.C. 3501 et seq. Burden is defined at 5 CFR 1320.3(b). This rule responds to the requirement to promulgate air quality designations after promulgation of a new or revised NAAQS. This requirement is prescribed in the CAA section 107. The present final rule does not establish any new information collection requirements.

C. Regulatory Flexibility Act

This final rule is not subject to the Regulatory Flexibility Act (RFA), which generally requires an agency to prepare a regulatory flexibility analysis for any rule that will have a significant economic impact on a substantial number of small entities. The RFA applies only to rules subject to notice-and-comment rulemaking requirements under the Administrative Procedure Act (APA) or any other statute. This rule is not subject to notice-and-comment requirements under the APA or any other statute because the rule is subject to CAA section 107(d)(2)(B), which does not require that the agency issue a notice of proposed rulemaking before issuing this rule.

D. Unfunded Mandates Reform Act

This action contains no federal mandate under the provisions of Title II of the Unfunded Mandates Reform Act of 1995 (UMRA), 2 U.S.C. 1531-1538 for state, local, or tribal governments or the private sector. The action imposes no enforceable duty on any state, local or tribal governments or the private sector. Therefore, this action is not subject to the requirements of sections 202 and 205 of the UMRA.

This action is also not subject to the requirements of section 203 of UMRA because it contains no regulatory requirements that might significantly or uniquely affect small governments. It does not create any additional requirements beyond those of the CAA and NO₂ NAAQS (40 CFR 50.11). The CAA establishes the process whereby states take primary responsibility in developing plans to meet the NO₂ NAAQS.

E. Executive Order 13132: Federalism

This final rule does not have federalism implications. It will not have substantial direct effects on the states, on the relationship between the national government and the states, or on the distribution of power and responsibilities among the various levels of government, as specified in Executive Order 13132. The CAA establishes the process whereby states take primary responsibility in developing plans to meet the NO₂ NAAQS. This rule will not modify the relationship of the states and the EPA for purposes of developing programs to implement the NO₂ NAAQS. Thus, Executive Order 13132 does not apply to this rule.

F. Executive Order 13175: Consultation and Coordination With Indian Tribal Governments

This action does not have tribal implications, as specified in Executive Order 13175 (65 FR 67249, November 9, 2000). This rule concerns the designation of areas for the 1-hour NO₂ NAAQS. The CAA provides for states and eligible tribes to develop plans to regulate emissions of air pollutants within their areas, as necessary, based on the designations. The TAR provides tribes the opportunity to apply for eligibility to develop and implement CAA programs such as programs to attain and maintain the NO₂ NAAQS, but it leaves to the discretion of the tribe the decision of whether to apply to develop these programs and which programs, or appropriate elements of a program, the tribe will seek to adopt. This rule does not have a substantial direct effect on one or more Indian tribes. It does not create any additional requirements beyond those of the NO₂ NAAQS (40 CFR section 50.11). This rule establishes the designation for certain areas of the country for the NO₂ NAAQS but no areas in Indian country are being designated nonattainment under this rule. Consequently, no tribe has any immediate requirement to implement a CAA program to attain the 1-hour NO₂ NAAQS in Indian Country at this time. Furthermore, this rule does not affect the relationship or distribution of power and responsibilities between the federal government and Indian tribes. The CAA and the TAR establish the relationship of the federal government and tribes in developing plans to attain the NAAQS, and this rule does nothing to modify that relationship. Thus, Executive Order 13175 does not apply to this action.

Although Executive Order 13175 does not apply to this action, the EPA communicated with tribal leaders and environmental staff regarding the designations process. The EPA also sent individualized letters to all federally recognized tribes to explain the designation process for the 2010 NO₂ NAAQS, to provide the EPA designations guidance, and to offer consultation with the EPA. The EPA provided further information to tribes through presentations at the National Tribal Forum and through participation in National Tribal Air Association conference calls. The EPA also sent individualized letters to all federally recognized tribes that submitted recommendations to the EPA about the EPA's intended designations for the NO₂ standards and offered tribal leaders the opportunity for consultation. These communications provided opportunities for tribes to voice concerns to the EPA about the general designations process for the NO₂ NAAQS, as well as concerns specific to a tribe, and informed the EPA about key tribal concerns regarding designations as the rule was under development.

G. Executive Order 13045: Protection of Children From Environmental Health and Safety Risks

The EPA interprets Executive Order 13045 (62 FR 19885, April 23, 1997) as applying only to those regulatory actions that concern health or safety risks, such that the analysis required under section 5-501 of the Executive Order has the potential to influence the regulation. This action is not subject to Executive Order 13045 because it does not establish an environmental standard intended to mitigate health or safety risks.

H. Executive Order 13211: Actions That Significantly Affect Energy Supply, Distribution, or Use

This action is not subject to Executive Order 13211 (66 FR 28355 (May 22, 2001)), because it is not a significant regulatory action under Executive Order 12866.

I. National Technology Transfer and Advancement Act (NTTAA)

Section 12(d) of the NTTAA of 1995, Public Law 104-113, section 12(d) (15 U.S.C. 272 note) directs the EPA to use voluntary consensus standards (VCS) in its regulatory activities unless to do so would be inconsistent with applicable law or otherwise impracticable. Voluntary consensus standards are technical standards (e.g., materials specifications, test methods, sampling procedures, and business practices) that are developed or adopted by VCS bodies. The NTTAA directs the EPA to provide Congress, through OMB, explanations when the Agency decides not to use available and applicable VCS.

This action does not involve technical standards. Therefore, the EPA did not consider the use of any VCS.

J. Executive Order 12898: Federal Actions To Address Environmental Justice in Minority Populations and Low-Income Populations

Executive Order 12898 (59 FR 7629 (Feb. 16, 1994)) establishes federal executive policy on environmental justice. Its main provision directs federal agencies, to the greatest extent practicable and permitted by law, to make environmental justice part of their mission by identifying and addressing, as appropriate, disproportionately high and adverse human health or environmental effects of their programs, policies, and activities on minority populations and low-income populations in the U.S.

The CAA requires that the EPA designate as nonattainment “any area that does not meet (or that contributes to ambient air quality in a nearby area that does not meet) the national primary or secondary ambient air quality standard for the pollutant.” By designating as nonattainment all areas where available information indicates a violation of the NO₂ NAAQS, this action protects all those residing, working, attending school, or otherwise present in those areas regardless of minority or economic status.

EPA has determined that this final rule will not have disproportionately high and adverse human health or environmental effects on minority or low-income populations because it increases the level of environmental protection for all affected populations without having any disproportionately high and adverse human health or environmental effects on any population, including any minority or low-income population

K. Congressional Review Act

The Congressional Review Act, 5 U.S.C. 801 et seq., as added by the Small Business Regulatory Enforcement Fairness Act of 1996, generally provides that before a rule may take effect, the agency promulgating the rule must submit a rule report, which includes a copy of the rule, to each House of the Congress and to the Comptroller General of the U.S. The EPA will submit 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 U.S. prior to publication of the rule in the Federal Register. A major rule cannot take effect until 60 days after it is published in the Federal Register. This action is not a “major rule” as defined by 5 U.S.C. 804(2). This rule will be effective February 29, 2012.

L. Judicial Review

Section 307(b)(1) of the CAA indicates which Federal Courts of Appeal have venue for petitions of review of final actions by EPA. This section provides, in part, that petitions for review must be filed in the Court of Appeals for the District of Columbia Circuit: (i) When the agency action consists of “nationally applicable regulations promulgated, or final actions taken, by the Administrator,” or (ii) when such action is locally or regionally applicable, if “such action is based on a determination of nationwide scope or effect and if in taking such action the Administrator finds and publishes that such action is based on such a determination.”

This rule designating areas for the 2010 NO₂ NAAQS is “nationally applicable” within the meaning of section 307(b)(1). This rule establishes designations for areas across the U.S. for the 2010 NO₂ NAAQS. At the core of this rulemaking is EPA's interpretation of the definition of nonattainment under section 107(d)(1) of the CAA, and its application of that interpretation to areas across the country.

For the same reasons, the Administrator also is determining that the final designations are of nationwide scope and effect for the purposes of section 307(b)(1). This is particularly appropriate because, in the report on the 1977 Amendments that revised section 307(b)(1) of the CAA, Congress noted that the Administrator's determination that an action is of “nationwide scope or effect” would be appropriate for any action that has a scope or effect beyond a single judicial circuit. H.R. Rep. No. 95-294 at 323, 324, reprinted in 1977 U.S.C.C.A.N. 1402-03. Here, the scope and effect of this rulemaking extends to numerous judicial circuits since the designations apply to areas across the country. In these circumstances, section 307(b)(1) and its legislative history calls for the Administrator to find the rule to be of “nationwide scope or effect” and for venue to be in the D.C. Circuit.

Thus, any petitions for review of final designations must be filed in the Court of Appeals for the District of Columbia Circuit within 60 days from the date final action is published in the Federal Register.

List of Subjects in 40 CFR Part 81

• Environmental protection
• Air pollution control
• National parks
• Wilderness areas

Dated: January 20, 2012.

Lisa P. Jackson,

Administrator.

For the reasons set forth in the preamble, 40 CFR Part 81, is amended as follows:

PART 81—DESIGNATIONS OF AREAS FOR AIR QUALITY PLANNING PURPOSES

1. The authority citation for part 81 continues to read as follows:

Authority: 42 U.S.C. 7401, et seq.

Subpart C—Section 107 Attainment Status Designations

* * * * *

2. Section 81.301 is amended as follows:

a. By revising the table heading “Alabama—NO ₂” to read “Alabama—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Alabama—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.301

Alabama.

* * * * *

Alabama—NO² (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Autauga County		Unclassifiable/Attainment.
Baldwin County		Unclassifiable/Attainment.
Barbour County		Unclassifiable/Attainment.
Bibb County		Unclassifiable/Attainment.
Blount County		Unclassifiable/Attainment.
Bullock County		Unclassifiable/Attainment.
Butler County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Chambers County		Unclassifiable/Attainment.
Cherokee County		Unclassifiable/Attainment.
Chilton County		Unclassifiable/Attainment.
Choctaw County		Unclassifiable/Attainment.
Clarke County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Cleburne County		Unclassifiable/Attainment.
Coffee County		Unclassifiable/Attainment.
Colbert County		Unclassifiable/Attainment.
Conecuh County		Unclassifiable/Attainment.
Coosa County		Unclassifiable/Attainment.
Covington County		Unclassifiable/Attainment.
Crenshaw County		Unclassifiable/Attainment.
Cullman County		Unclassifiable/Attainment.
Dale County		Unclassifiable/Attainment.
Dallas County		Unclassifiable/Attainment.
De Kalb County		Unclassifiable/Attainment.
Elmore County		Unclassifiable/Attainment.
Escambia County		Unclassifiable/Attainment.
Fayette County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Geneva County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Hale County		Unclassifiable/Attainment.
Henry County		Unclassifiable/Attainment.
Houston County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Lamar County		Unclassifiable/Attainment.
Lauderdale County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Limestone County		Unclassifiable/Attainment.
Lowndes County		Unclassifiable/Attainment.
Macon County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Marengo County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Marshall County		Unclassifiable/Attainment.
Mobile County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Morgan County		Unclassifiable/Attainment.
Perry County		Unclassifiable/Attainment.
Pickens County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Randolph County		Unclassifiable/Attainment.
Russell County		Unclassifiable/Attainment.
Shelby County		Unclassifiable/Attainment.
St. Clair County		Unclassifiable/Attainment.
Sumter County		Unclassifiable/Attainment.
Talladega County		Unclassifiable/Attainment.
Tallapoosa County		Unclassifiable/Attainment.
Tuscaloosa County		Unclassifiable/Attainment.
Walker County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wilcox County		Unclassifiable/Attainment.
Winston County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

3. Section 81.302 is amended as follows:

a. By revising the table heading “Alaska—NO ₂” to read “Alaska—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Alaska—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.302

Alaska.

* * * * *

Alaska—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Alaska		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

4. Section 81.303 is amended as follows:

a. By revising the table heading “Arizona—NO ₂” to read “Arizona—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Arizona—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.303

Arizona.

* * * * *

Arizona—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Apache County		Unclassifiable/Attainment.
Cochise County		Unclassifiable/Attainment.
Coconino County		Unclassifiable/Attainment.
Gila County		Unclassifiable/Attainment.
Graham County		Unclassifiable/Attainment.
Greenlee County		Unclassifiable/Attainment.
La Paz County		Unclassifiable/Attainment.
Maricopa County		Unclassifiable/Attainment.
Mohave County		Unclassifiable/Attainment.
Navajo County		Unclassifiable/Attainment.
Pima County		Unclassifiable/Attainment.
Pinal County		Unclassifiable/Attainment.
Santa Cruz County		Unclassifiable/Attainment.
Yavapai County		Unclassifiable/Attainment.
Yuma County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

5. Section 81.304 is amended as follows:

a. By revising the table heading “Arkansas—NO ₂” to read “Arkansas—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Arkansas—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.304

Arkansas.

* * * * *

Arkansas—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Ashley County		Unclassifiable/Attainment.
Arkansas County		Unclassifiable/Attainment.
Baxter County		Unclassifiable/Attainment.
Benton County		Unclassifiable/Attainment.
Boone County		Unclassifiable/Attainment.
Bradley County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Chicot County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Cleburne County		Unclassifiable/Attainment.
Cleveland County		Unclassifiable/Attainment.
Columbia County		Unclassifiable/Attainment.
Conway County		Unclassifiable/Attainment.
Craighead County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Crittenden County		Unclassifiable/Attainment.
Cross County		Unclassifiable/Attainment.
Dallas County		Unclassifiable/Attainment.
Desha County		Unclassifiable/Attainment.
Drew County		Unclassifiable/Attainment.
Faulkner County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Fulton County		Unclassifiable/Attainment.
Garland County.		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Hempstead County		Unclassifiable/Attainment.
Hot Spring County		Unclassifiable/Attainment.
Howard County.		Unclassifiable/Attainment.
Independence County		Unclassifiable/Attainment.
Izard Count		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jefferson County.		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Lafayette County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Little River County		Unclassifiable/Attainment.
Logan County		Unclassifiable/Attainment.
Lonoke County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Miller County		Unclassifiable/Attainment.
Mississippi County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Nevada County		Unclassifiable/Attainment.
Newton County		Unclassifiable/Attainment.
Ouachita County		Unclassifiable/Attainment.
Perry County		Unclassifiable/Attainment.
Phillips County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Poinsett County		Unclassifiable/Attainment.
Polk County		Unclassifiable/Attainment.
Pope County		Unclassifiable/Attainment.
Prairie County		Unclassifiable/Attainment.
Pulaski County		Unclassifiable/Attainment.
Randolph County		Unclassifiable/Attainment.
St. Francis County		Unclassifiable/Attainment.
Saline County		Unclassifiable/Attainment.
Scott County		Unclassifiable/Attainment.
Searcy County		Unclassifiable/Attainment.
Sebastian County		Unclassifiable/Attainment
Sevier County		Unclassifiable/Attainment.
Sharp County		Unclassifiable/Attainment.
Stone County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Van Buren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
White County		Unclassifiable/Attainment.
Woodruff County		Unclassifiable/Attainment.
Yell County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

6. Section 81.305 is amended as follows:

a. By revising the table heading “California—NO ₂” to read “California—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “California—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.305

California.

* * * * *

California—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Amador County APCD:
Amador County		Unclassifiable/Attainment.
Antelope Valley AQMD:
Los Angeles County (part)		Unclassifiable/Attainment.
That portion of Los Angeles County which lies north and east of a line described as follows: Beginning at the Los Angeles-San Bernardino County boundary and running west along the township line common to T. 3 N and T. 2 N, San Bernardino Base and Meridian; then north along the range line common to R. 8 W and R. 9 W; then west along the township line common to T. 4 N and T. 3 N; then north along the range Line Common to R. 12 W and R. 13 W to the southeast corner of Section 12, T. 5 N, R. 13 W; then west along the south boundaries of Sections 12, 11, 10, 9, 8, 7, T. 5 N, R. 13 W to the boundary of the Angeles National Forest which is collinear with the range line common to R. 13 W and R. 14 W; then north and west along the Angeles National Forest boundary to the point of intersection with the township line common to T. 7 N and T. 6 N (point is at the northwest corner of Section 4 in T. 6 N, R. 14 W); then west along the township line common to T. 7 N and T. 6 N; then north along the range line common to R. 15 W and R. 16 W to the southeast corner of Section 13, T. 7 N, R. 16 W; then along the south boundaries of Sections 13, 14, 15, 16, 17, 18, T. 7 N, R. 16 W; then north along the range line common to R. 16 W and R. 17 W to the north boundary of the Angeles National Forest (collinear with township line common to T. 8 N and T. 7 N) then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary
Bay Area AQMD:
Alameda County		Unclassifiable/Attainment.
Contra Costa County		Unclassifiable/Attainment.
Marin County		Unclassifiable/Attainment.
Napa County		Unclassifiable/Attainment.
San Francisco County		Unclassifiable/Attainment.
San Mateo County		Unclassifiable/Attainment.
Santa Clara County		Unclassifiable/Attainment.
Solano County (part)		Unclassifiable/Attainment.
That portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T. 6 N, R. 2.W, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, T. 6 N, R. 2 W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T. 5 N, R. 1 W, thence east along a line common to T. 5 N and T. 6 N to the northeast corner of Section 3, T. 5 N, R. 1 E, thence south along section lines to the southeast corner of Section 10, T. 3 N, R. 1 E, thence east along section lines to the south 1/4 corner of Section 8, T. 3 N, R. 2 E, thence east to the boundary between Solano and Sacramento Counties
Sonoma County (part)		Unclassifiable/Attainment.
That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, Mount Diablo Meridian; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties
Butte County AQMD:
Butte County		Unclassifiable/Attainment.
Calaveras County AQMD:
Calaveras County		Unclassifiable/Attainment.
Colusa County AQMD:
Colusa County		Unclassifiable/Attainment.
Eastern Kern APCD:
Kern County (part)		Unclassifiable/Attainment.
That portion of Kern County east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W and R. 17 W, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of Section 3, T. 11 N, R. 17 W; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, T. 32 S, R. 30 E, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, T. 31 S, R. 30 E; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, T. 31 S, R. 31 E; then east to the southeast corner of Section 13, T. 31 S, R. 31 E; then north along the range line common to R. 31 E and R. 32 E, Mount Diablo Base and Meridian, to the northwest corner of Section 6, T. 29 S, R. 32 E; then east to the southwest corner of Section 31 T. 28 S, R. 32 E; then north along the range line common to R. 31 E and R. 32 E to the northwest corner of Section 6, T. 28 S, R. 32 E, then west to the southeast corner of Section 36, T. 27 S, R. 31 E, then north along the range line common to R. 31 E and R. 32 E to the Kern-Tulare County boundary
El Dorado County AQMD:
El Dorado County		Unclassifiable/Attainment.
Feather River AQMD:
Sutter County		Unclassifiable/Attainment.
Yuba County		Unclassifiable/Attainment.
Glenn County APCD:
Glenn County		Unclassifiable/Attainment.
Great Basin Unified APCD:
Alpine County		Unclassifiable/Attainment.
Inyo County		Unclassifiable/Attainment.
Mono County		Unclassifiable/Attainment.
Imperial County APCD:
Imperial County		Unclassifiable/Attainment.
Lake County AQMD:
Lake County		Unclassifiable/Attainment.
Lassen County APCD:
Lassen County		Unclassifiable/Attainment.
Mariposa County APCD:
Mariposa County		Unclassifiable/Attainment.
Mendocino County AQMD:
Mendocino County		Unclassifiable/Attainment.
Modoc County APCD:
Modoc County		Unclassifiable/Attainment.
Mojave Desert AQMD:
Riverside County (part)		Unclassifiable/Attainment.
That portion of Riverside County which lies east of a line described as follows: Beginning at the southwest corner of Section 32, T. 8 S, R. 20 E, San Bernardino Base and Meridian, on the Riverside-Imperial County Boundary; then northerly along section lines to the northwest corner of Section 5, T. 7 S, R. 20 E; then westerly along the township line to the southwest corner of Section 31, T. 6 S, R. 19 E; then northerly along the range line to the northwest corner of Section 6, T. 5 S, R. 19 E; then easterly along the township line to the southwest corner of Section 33, T. 4 S, R. 19 E; then northerly along section lines to the northwest corner of Section 4, T. 4 S, R. 19 E; then westerly along the township lines to the southwest corner of Section 32, T. 3 S, R. 19 E; then northerly along section lines to the northwest corner of Section 17, T. 3 S, R. 19 E; then westerly along the township line to the southwest corner of Section 7, T. 3 S, R. 19 E; then northerly along section lines to the northwest corner of Section 30, T. 2 S, R. 19 E; then westerly along the southerly line of Section 24, T. 2 S, R. 18 E, to the southwest corner thereof; then northerly along section lines to the northwest corner of Section 13, T. 2 S, R. 18 E; then westerly along section lines to the southwest corner of Section 10, T. 2 S, R. 18 E; then northerly along section lines to the Riverside-San Bernardino County boundary
San Bernardino County (part)		Unclassifiable/Attainment.
That portion of San Bernardino County east and north of a line described as follows: Beginning at the San Bernardino-Riverside County boundary and running north along the range line common to R. 3 E and R. 2 E, San Bernardino Base and Meridian; then west along the township line common to T. 3 N and T. 2 N to the San Bernardino-Los Angeles County boundary
Monterey Bay Unified APCD:
Monterey County		Unclassifiable/Attainment.
San Benito County		Unclassifiable/Attainment.
Santa Cruz County		Unclassifiable/Attainment.
North Coast Unified AQMD:
Del Norte County		Unclassifiable/Attainment.
Humboldt Count		Unclassifiable/Attainment.
Trinity County		Unclassifiable/Attainment.
Northern Sierra AQMD:
Nevada County		Unclassifiable/Attainment.
Plumas County		Unclassifiable/Attainment.
Sierra County		Unclassifiable/Attainment.
Northern Sonoma County APCD:
Sonoma County (part)		Unclassifiable/Attainment.
That portion of Sonoma County which lies north and west of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, Mount Diablo Meridian; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties.
Placer County APCD:
Placer County		Unclassifiable/Attainment.
Sacramento Metropolitan AQMD:
Sacramento County		Unclassifiable/Attainment.
San Diego County APCD:
San Diego County		Unclassifiable/Attainment.
San Joaquin Valley Unified APCD:
Fresno County		Unclassifiable/Attainment.
Kern County (part)		Unclassifiable/Attainment.
That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W and R. 17 W, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of Section 3, T. 11 N, R. 17 W; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, T. 32 S, R. 30 E, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, T. 31 S, R. 30 E; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, T. 31 S, R. 31 E; then east to the southeast corner of Section 13, T. 31 S, R. 31 E; then north along the range line common to R. 31 E and R. 32 E, Mount Diablo Base and Meridian, to the northwest corner of Section 6, T. 29 S, R. 32 E; then east to the southwest corner of Section 31, T. 28 S, R. 32 E; then north along the range line common to R. 31 E and R. 32 E to the northwest corner of Section 6, T. 28 S, R. 32 E, then west to the southeast corner of Section 36, T. 27 S, R. 31 E, then north along the range line common to R. 31 E and R. 32 E to the Kern-Tulare County boundary.
Kings County		Unclassifiable/Attainment.
Madera County		Unclassifiable/Attainment.
Merced County		Unclassifiable/Attainment.
San Joaquin County		Unclassifiable/Attainment.
Stanislaus County		Unclassifiable/Attainment.
Tulare County		Unclassifiable/Attainment.
San Luis Obispo County APCD:
San Luis Obispo County		Unclassifiable/Attainment.
Santa Barbara County APCD:
Santa Barbara County		Unclassifiable/Attainment.
Shasta County AQMD:
Shasta County		Unclassifiable/Attainment.
Siskiyou County APCD:
Siskiyou County		Unclassifiable/Attainment.
South Coast AQMD:
Los Angeles County (part)		Unclassifiable/Attainment.
That portion of Los Angeles County which lies south and west of a line described as follows: Beginning at the Los Angeles-San Bernardino County boundary and running west along the township line common to T.3 N and T.2 N, San Bernardino Base and Meridian; then north along the range line common to R.8 W and R.9 W; then west along the township line common to T.4 N and T.3 N; then north along the range line common to R.12 W and R.13 W to the southeast corner of Section 12, T.5 N, R. 13 W; then west along the south boundaries of Sections 12, 11, 10, 9, 8, 7, T.5 N, R. 13 W to the boundary of the Angeles National Forest which is collinear with the range line common to R. 13 W and R. 14 W; then north and west along the Angeles National Forest boundary to the point of intersection with the township line common to T.7 N and T. 6 N (point is at the northwest corner of Section 4 in T.6 N, R. 14 W); then west along the township line common to T.7 N and T.6 N; then north along the range line common to R. 15 W and R. 16 W to the southeast corner of Section 13, T.7 N, R. 16 W; then along the south boundaries of Sections 13, 14, 15, 16, 17, 18, T.7 N, R. 16 W; then north along the range line common to R.16 W and R. 17 W to the north boundary of the Angeles National Forest (collinear with township line common to T.8 N and T.7 N); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary.
Orange County		Unclassifiable/Attainment.
Riverside County (part)		Unclassifiable/Attainment.
That portion of Riverside County which lies west of a line described as follows: Beginning at the southwest corner of Section 32, T. 8 S, R. 20 E, San Bernardino Base and Meridian, on the Riverside-Imperial County Boundary; then northerly along section lines to the northwest corner of Section 5, T. 7 S, R. 20 E; then westerly along the township line to the southwest corner of Section 31, T. 6 S, R. 19 E; then northerly along the range line to the northwest corner of Section 6, T. 5 S, R. 19 E; then easterly along the township line to the southwest corner of Section 33, T. 4 S, R. 19 E; then northerly along section lines to the northwest corner of Section 4, T. 4 S, R. 19 E; then westerly along the township lines to the southwest corner of Section 32, T. 3 S, R. 19 E; then northerly along section lines to the northwest corner of Section 17, T. 3 S, R. 19 E; then westerly along the township line to the southwest corner of Section 7, T. 3 S, R. 19 E; then northerly along section lines to the northwest corner of Section 30, T. 2 S, R. 19 E; then westerly along the southerly line of Section 24, T. 2 S, R. 18 E, to the southwest corner thereof; then northerly along section lines to the northwest corner of Section 13, T. 2 S, R. 18 E; then westerly along section lines to the southwest corner of Section 10, T. 2 S, R. 18 E; then northerly along section lines to the Riverside-San Bernardino County boundary.
San Bernardino County (part)		Unclassifiable/Attainment.
That portion of San Bernardino County west and south of a line described as follows: Beginning at the San Bernardino-Riverside County boundary and running north along the range line common to R. 3 E and R. 2 E; then west along the township line common to T. 3 N and T. 2 N to the San Bernardino-Los Angeles County boundary.
Tehama County APCD:
Tehama County		Unclassifiable/Attainment.
Tuolumne County APCD:
Tuolumne County		Unclassifiable/Attainment.
Ventura County APCD:
Ventura County		Unclassifiable/Attainment.
Yolo-Solano AQMD:
Solano County		Unclassifiable/Attainment.
That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T. 6 N, R. 2 W, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, T. 6 N, R. 2 W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T. 5 N, R. 1 W, thence east along a line common to T. 5 N and T. 6 N to the northeast corner of Section 3, T. 5 N, R. 1 E, thence south along section lines to the southeast corner of Section 10, T. 3 N, R. 1 E, thence east along section lines to the south 1/4 corner of Section 8, T. 3 N, R. 2 E, thence east to the boundary between Solano and Sacramento Counties.
Yolo County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

7. Section 81.306 is amended as follows:

a. By revising the table heading “Colorado—NO ₂” to read “Colorado—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Colorado—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.306

Colorado.

* * * * *

Colorado—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State AQCR 01:
Logan County		Unclassifiable/Attainment.
Morgan County		Unclassifiable/Attainment.
Phillips County		Unclassifiable/Attainment.
Sedgwick County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Yuma County		Unclassifiable/Attainment.
State AQCR 02:
Larimer County		Unclassifiable/Attainment.
Weld County		Unclassifiable/Attainment.
State AQCR 03:
Adams County		Unclassifiable/Attainment.
Arapahoe County		Unclassifiable/Attainment.
Boulder County		Unclassifiable/Attainment.
Broomfield County		Unclassifiable/Attainment.
Clear Creek County		Unclassifiable/Attainment.
Denver County		Unclassifiable/Attainment.
Douglas County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Gilpin County		Unclassifiable/Attainment.
State AQCR 04:
El Paso County		Unclassifiable/Attainment.
Park County		Unclassifiable/Attainment.
Teller County		Unclassifiable/Attainment.
State AQCR 05:
Cheyenne County		Unclassifiable/Attainment.
Elbert County		Unclassifiable/Attainment.
Kit Carson County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
State AQCR 06:
Baca County		Unclassifiable/Attainment.
Bent County		Unclassifiable/Attainment.
Crowley County		Unclassifiable/Attainment.
Kiowa County		Unclassifiable/Attainment.
Otero County		Unclassifiable/Attainment.
Prowers County		Unclassifiable/Attainment.
State AQCR 07:
Huerfano County		Unclassifiable/Attainment.
Las Animas County		Unclassifiable/Attainment.
Pueblo County		Unclassifiable/Attainment.
State AQCR 08:
Alamosa County		Unclassifiable/Attainment.
Conejos County		Unclassifiable/Attainment.
Costilla County		Unclassifiable/Attainment.
Mineral County		Unclassifiable/Attainment.
Rio Grande County		Unclassifiable/Attainment.
Saguache County		Unclassifiable/Attainment.
State AQCR 09:
Archuleta County		Unclassifiable/Attainment.
Dolores County		Unclassifiable/Attainment.
La Plata County		Unclassifiable/Attainment.
Montezuma County		Unclassifiable/Attainment.
San Juan County		Unclassifiable/Attainment.
State AQCR 10:
Delta County		Unclassifiable/Attainment.
Gunnison County		Unclassifiable/Attainment.
Hinsdale County		Unclassifiable/Attainment.
Montrose County		Unclassifiable/Attainment.
Ouray County		Unclassifiable/Attainment.
San Miguel County		Unclassifiable/Attainment.
State AQCR 11:
Garfield County		Unclassifiable/Attainment.
Mesa County		Unclassifiable/Attainment.
Moffat County		Unclassifiable/Attainment.
Rio Blanco County		Unclassifiable/Attainment.
State AQCR 12:
Eagle County		Unclassifiable/Attainment.
Grand County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Pitkin County		Unclassifiable/Attainment.
Routt County		Unclassifiable/Attainment.
Summit County		Unclassifiable/Attainment.
State AQCR 13:
Chaffee County		Unclassifiable/Attainment.
Custer County		Unclassifiable/Attainment.
Fremont County		Unclassifiable/Attainment.
Lake County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

8. Section 81.307 is amended as follows:

a. By revising the table heading “Connecticut—NO ₂” to read “Connecticut—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Connecticut—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.307

Connecticut.

* * * * *

Connecticut—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Connecticut		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

9. Section 81.308 is amended as follows:

a. By revising the table heading “Delaware—NO ₂” to read “Delaware—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Delaware—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.308

Delaware.

* * * * *

Delaware—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Kent County		Unclassifiable/Attainment.
New Castle County		Unclassifiable/Attainment.
Sussex County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

10. Section 81.309 is amended as follows:

a. By revising the table heading “District of Columbia—NO ₂” to read “District of Columbia—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “District of Columbia—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.309

District of Columbia.

* * * * *

District of Columbia—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
District of Columbia		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

11. Section 81.310 is amended as follows:

a. By revising the table heading “Florida—NO ₂” to read “Florida—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Florida—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.310

Florida.

* * * * *

Florida—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Florida		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

12. Section 81.311 is amended as follows:

a. By revising the table heading “Georgia—NO ₂” to read “Georgia—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Georgia—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.311

Georgia.

* * * * *

Georgia—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Appling County		Unclassifiable/Attainment.
Atkinson County		Unclassifiable/Attainment.
Bacon County		Unclassifiable/Attainment.
Baker County		Unclassifiable/Attainment.
Baldwin County		Unclassifiable/Attainment.
Banks County		Unclassifiable/Attainment.
Barrow County		Unclassifiable/Attainment.
Bartow County		Unclassifiable/Attainment.
Ben Hill County		Unclassifiable/Attainment.
Berrien County		Unclassifiable/Attainment.
Bibb County		Unclassifiable/Attainment.
Bleckley County		Unclassifiable/Attainment.
Brantley County		Unclassifiable/Attainment.
Brooks County		Unclassifiable/Attainment.
Bryan County		Unclassifiable/Attainment.
Bulloch County		Unclassifiable/Attainment.
Burke County		Unclassifiable/Attainment.
Butts County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Camden County		Unclassifiable/Attainment.
Candler County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Catoosa County		Unclassifiable/Attainment.
Charlton County		Unclassifiable/Attainment.
Chatham County		Unclassifiable/Attainment.
Chattahoochee County		Unclassifiable/Attainment.
Chattooga County		Unclassifiable/Attainment.
Cherokee County		Unclassifiable/Attainment.
Clarke County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Clayton County		Unclassifiable/Attainment.
Clinch County		Unclassifiable/Attainment.
Cobb County		Unclassifiable/Attainment.
Coffee County		Unclassifiable/Attainment.
Colquitt County		Unclassifiable/Attainment.
Columbia County		Unclassifiable/Attainment.
Cook County		Unclassifiable/Attainment.
Coweta County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Crisp County		Unclassifiable/Attainment.
Dade County		Unclassifiable/Attainment.
Dawson County		Unclassifiable/Attainment.
Decatur County		Unclassifiable/Attainment.
DeKalb County		Unclassifiable/Attainment.
Dodge County		Unclassifiable/Attainment.
Dooly County		Unclassifiable/Attainment.
Dougherty County		Unclassifiable/Attainment.
Douglass County		Unclassifiable/Attainment.
Early County		Unclassifiable/Attainment.
Echols County		Unclassifiable/Attainment.
Effingham County		Unclassifiable/Attainment.
Elbert County		Unclassifiable/Attainment.
Emanuel County		Unclassifiable/Attainment.
Evans County		Unclassifiable/Attainment.
Fannin County		Unclassifiable/Attainment.
Fayette County		Unclassifiable/Attainment.
Floyd County		Unclassifiable/Attainment.
Forsyth County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Fulton County		Unclassifiable/Attainment.
Gilmer County		Unclassifiable/Attainment.
Glascock County		Unclassifiable/Attainment.
Glynn County		Unclassifiable/Attainment.
Gordon County		Unclassifiable/Attainment.
Grady County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Gwinnett County		Unclassifiable/Attainment.
Habersham County		Unclassifiable/Attainment.
Hall County		Unclassifiable/Attainment.
Hancock County		Unclassifiable/Attainment.
Haralson County		Unclassifiable/Attainment.
Harris County		Unclassifiable/Attainment.
Hart County		Unclassifiable/Attainment.
Heard County		Unclassifiable/Attainment.
Henry County		Unclassifiable/Attainment.
Houston County		Unclassifiable/Attainment.
Irwin County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jasper County		Unclassifiable/Attainment.
Jeff Davis County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Jenkins County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Jones County		Unclassifiable/Attainment.
Lamar County		Unclassifiable/Attainment.
Lanier County		Unclassifiable/Attainment.
Laurens County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Liberty County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Long County		Unclassifiable/Attainment.
Lowndes County		Unclassifiable/Attainment.
Lumpkin County		Unclassifiable/Attainment.
McDuffie County		Unclassifiable/Attainment.
McIntosh County		Unclassifiable/Attainment.
Macon County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Meriwether County		Unclassifiable/Attainment.
Miller County		Unclassifiable/Attainment.
Mitchell County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Morgan County		Unclassifiable/Attainment.
Murray County		Unclassifiable/Attainment.
Muscogee County		Unclassifiable/Attainment.
Newton County		Unclassifiable/Attainment.
Oconee County		Unclassifiable/Attainment.
Oglethorpe County		Unclassifiable/Attainment.
Pauling County		Unclassifiable/Attainment.
Peach County		Unclassifiable/Attainment.
Pickens County		Unclassifiable/Attainment.
Pierce County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Polk County		Unclassifiable/Attainment.
Pulaski County		Unclassifiable/Attainment.
Putnam County		Unclassifiable/Attainment.
Quitman County		Unclassifiable/Attainment.
Rabun County		Unclassifiable/Attainment.
Randolph County		Unclassifiable/Attainment.
Richmond County		Unclassifiable/Attainment.
Rockdale County		Unclassifiable/Attainment.
Schley County		Unclassifiable/Attainment.
Screven County		Unclassifiable/Attainment.
Seminole County		Unclassifiable/Attainment.
Spalding County		Unclassifiable/Attainment.
Stephens County		Unclassifiable/Attainment.
Stewart County		Unclassifiable/Attainment.
Sumter County		Unclassifiable/Attainment.
Talbot County		Unclassifiable/Attainment.
Taliaferro County		Unclassifiable/Attainment.
Tattnall County		Unclassifiable/Attainment.
Taylor County		Unclassifiable/Attainment.
Telfair County		Unclassifiable/Attainment.
Terrell County		Unclassifiable/Attainment.
Thomas County		Unclassifiable/Attainment.
Tift County		Unclassifiable/Attainment.
Toombs County		Unclassifiable/Attainment.
Towns County		Unclassifiable/Attainment.
Treutlen County		Unclassifiable/Attainment.
Troup County		Unclassifiable/Attainment.
Turner County		Unclassifiable/Attainment.
Twiggs County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Upson County		Unclassifiable/Attainment.
Walker County		Unclassifiable/Attainment.
Walton County		Unclassifiable/Attainment.
Ware County		Unclassifiable/Attainment.
Warren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Webster County		Unclassifiable/Attainment.
Wheeler County		Unclassifiable/Attainment.
White County		Unclassifiable/Attainment.
Whitfield County		Unclassifiable/Attainment.
Wilcox County		Unclassifiable/Attainment.
Wilkes County		Unclassifiable/Attainment.
Wilkinson County		Unclassifiable/Attainment.
Worth County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

13. Section 81.312 is amended as follows:

a. By revising the table heading “Hawaii—NO ₂” to read “Hawaii—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Hawaii—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.312

Hawaii.

* * * * *

Hawaii—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Hawaii County		Unclassifiable/Attainment.
Honolulu County		Unclassifiable/Attainment.
Kalawao County		Unclassifiable/Attainment.
Kauai County		Unclassifiable/Attainment.
Maui County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

14. Section 81.313 is amended as follows:

a. By revising the table heading “Idaho—NO ₂” to read “Idaho—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Idaho—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.314

Idaho.

* * * * *

Idaho—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
AQCR 61 Eastern Idaho Intrastate:
Bannock County		Unclassifiable/Attainment.
Bear Lake County		Unclassifiable/Attainment.
Bingham County		Unclassifiable/Attainment.
Bonneville County		Unclassifiable/Attainment.
Butte County		Unclassifiable/Attainment.
Caribou County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Fremont County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Oneida County		Unclassifiable/Attainment.
Power County		Unclassifiable/Attainment.
Teton County		Unclassifiable/Attainment.
AQCR 62 E Washington-N Idaho Interstate:
Benewah County		Unclassifiable/Attainment.
Kootenai County		Unclassifiable/Attainment.
Latah County		Unclassifiable/Attainment.
Nez Perce County		Unclassifiable/Attainment.
Shoshone County		Unclassifiable/Attainment.
AQCR 63 Idaho Interstate:
Adams County		Unclassifiable/Attainment.
Blaine County		Unclassifiable/Attainment.
Boise County		Unclassifiable/Attainment.
Bonner County		Unclassifiable/Attainment.
Boundary County		Unclassifiable/Attainment.
Camas County		Unclassifiable/Attainment.
Cassia County		Unclassifiable/Attainment.
Clearwater County		Unclassifiable/Attainment.
Custer County		Unclassifiable/Attainment.
Elmore County		Unclassifiable/Attainment.
Gem County		Unclassifiable/Attainment.
Gooding County		Unclassifiable/Attainment.
Idaho County		Unclassifiable/Attainment.
Jerome County		Unclassifiable/Attainment.
Lewis County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Minidoka County		Unclassifiable/Attainment.
Owyhee County		Unclassifiable/Attainment.
Payette County		Unclassifiable/Attainment.
Twin Falls County		Unclassifiable/Attainment.
Valley County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
AQCR 64 Metropolitan Boise Interstate:
Ada County		Unclassifiable/Attainment.
Canyon County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

15. Section 81.314 is amended as follows:

a. By revising the table heading “Illinois—NO ₂” to read “Illinois—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Illinois—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.314

Illinois.

* * * * *

Illinois—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adams County		Unclassifiable/Attainment.
Alexander County		Unclassifiable/Attainment.
Bond County		Unclassifiable/Attainment.
Boone County		Unclassifiable/Attainment.
Brown County		Unclassifiable/Attainment.
Bureau County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Cass County		Unclassifiable/Attainment.
Champaign County		Unclassifiable/Attainment.
Christian County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Clinton County		Unclassifiable/Attainment.
Coles County		Unclassifiable/Attainment.
Cook County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Cumberland County		Unclassifiable/Attainment.
DeKalb County		Unclassifiable/Attainment.
De Witt County		Unclassifiable/Attainment.
Douglas County		Unclassifiable/Attainment.
DuPage County		Unclassifiable/Attainment.
Edgar County		Unclassifiable/Attainment.
Edwards County		Unclassifiable/Attainment.
Effingham County		Unclassifiable/Attainment.
Fayette County		Unclassifiable/Attainment.
Ford County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Fulton County		Unclassifiable/Attainment.
Gallatin County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Grundy County		Unclassifiable/Attainment.
Hamilton County		Unclassifiable/Attainment.
Hancock County		Unclassifiable/Attainment.
Hardin County		Unclassifiable/Attainment.
Henderson County		Unclassifiable/Attainment.
Henry County		Unclassifiable/Attainment.
Iroquois County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jasper County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Jersey County		Unclassifiable/Attainment.
Jo Daviess County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Kane County		Unclassifiable/Attainment.
Kankakee County		Unclassifiable/Attainment.
Kendall County		Unclassifiable/Attainment.
Knox County		Unclassifiable/Attainment.
La Salle County		Unclassifiable/Attainment.
Lake County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Livingston County		Unclassifiable/Attainment.
Logan County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
McDonough County		Unclassifiable/Attainment.
McLean County		Unclassifiable/Attainment.
Macon County		Unclassifiable/Attainment.
Macoupin County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Marshall County		Unclassifiable/Attainment.
Mason County		Unclassifiable/Attainment.
Massac County		Unclassifiable/Attainment.
McHenry County		Unclassifiable/Attainment.
Menard County		Unclassifiable/Attainment.
Mercer County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Morgan County		Unclassifiable/Attainment.
Moultrie County		Unclassifiable/Attainment.
Ogle County		Unclassifiable/Attainment.
Peoria County		Unclassifiable/Attainment.
Perry County		Unclassifiable/Attainment.
Piatt County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Pope County		Unclassifiable/Attainment.
Pulaski County		Unclassifiable/Attainment.
Putnam County		Unclassifiable/Attainment.
Randolph County		Unclassifiable/Attainment.
Richland County		Unclassifiable/Attainment.
Rock Island County		Unclassifiable/Attainment.
St. Clair County		Unclassifiable/Attainment.
Saline County		Unclassifiable/Attainment.
Sangamon County		Unclassifiable/Attainment.
Schuyler County		Unclassifiable/Attainment.
Scott County		Unclassifiable/Attainment.
Shelby County		Unclassifiable/Attainment.
Stark County		Unclassifiable/Attainment.
Stephenson County		Unclassifiable/Attainment.
Tazewell County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Vermilion County		Unclassifiable/Attainment.
Wabash County		Unclassifiable/Attainment.
Warren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
White County		Unclassifiable/Attainment.
Whiteside County		Unclassifiable/Attainment.
Will County		Unclassifiable/Attainment.
Williamson County		Unclassifiable/Attainment.
Winnebago County		Unclassifiable/Attainment.
Woodford County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

16. Section 81.315 is amended as follows:

a. By revising the table heading “Indiana—NO ₂” to read “Indiana—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Indiana—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.315

Indiana.

Indiana—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Lake County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
St. Joseph County		Unclassifiable/Attainment.
Vanderburgh County		Unclassifiable/Attainment.
Rest of State		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

17. Section 81.316 is amended as follows:

a. By revising the table heading “Iowa—NO ₂” to read “Iowa—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Iowa—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.316

Iowa.

* * * * *

Iowa—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adair County		Unclassifiable/Attainment.
Adams County		Unclassifiable/Attainment.
Allamakee County		Unclassifiable/Attainment.
Appanoose County		Unclassifiable/Attainment.
Audubon County		Unclassifiable/Attainment.
Benton County		Unclassifiable/Attainment.
Black Hawk County		Unclassifiable/Attainment.
Boone County		Unclassifiable/Attainment.
Bremer County		Unclassifiable/Attainment.
Buchanan County		Unclassifiable/Attainment.
Buena Vista County		Unclassifiable/Attainment.
Butler County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Cass County		Unclassifiable/Attainment.
Cedar County		Unclassifiable/Attainment.
Cerro Gordo County		Unclassifiable/Attainment.
Cherokee County		Unclassifiable/Attainment.
Chickasaw County		Unclassifiable/Attainment.
Clarke County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Clayton County		Unclassifiable/Attainment.
Clinton County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Dallas County		Unclassifiable/Attainment.
Davis County		Unclassifiable/Attainment.
Decatur County		Unclassifiable/Attainment.
Delaware County		Unclassifiable/Attainment.
Des Moines County		Unclassifiable/Attainment.
Dickinson County		Unclassifiable/Attainment.
Dubuque County		Unclassifiable/Attainment.
Emmet County		Unclassifiable/Attainment.
Fayette County		Unclassifiable/Attainment.
Floyd County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Fremont County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Grundy County		Unclassifiable/Attainment.
Guthrie County		Unclassifiable/Attainment.
Hamilton County		Unclassifiable/Attainment.
Hancock County		Unclassifiable/Attainment.
Hardin County		Unclassifiable/Attainment.
Harrison County		Unclassifiable/Attainment.
Henry County		Unclassifiable/Attainment.
Howard County		Unclassifiable/Attainment.
Humboldt County		Unclassifiable/Attainment.
Ida County		Unclassifiable/Attainment.
Iowa County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jasper County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Jones County		Unclassifiable/Attainment.
Keokuk County		Unclassifiable/Attainment.
Kossuth County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Linn County		Unclassifiable/Attainment.
Louisa County		Unclassifiable/Attainment.
Lucas County		Unclassifiable/Attainment.
Lyon County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Mahaska County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Marshall County		Unclassifiable/Attainment.
Mills County		Unclassifiable/Attainment.
Mitchell County		Unclassifiable/Attainment.
Monona County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Muscatine County		Unclassifiable/Attainment.
O'Brien County		Unclassifiable/Attainment.
Osceola County		Unclassifiable/Attainment.
Page County		Unclassifiable/Attainment.
Palo Alto County		Unclassifiable/Attainment.
Plymouth County		Unclassifiable/Attainment.
Pocahontas County		Unclassifiable/Attainment.
Polk County		Unclassifiable/Attainment.
Pottawattamie County		Unclassifiable/Attainment.
Poweshiek County		Unclassifiable/Attainment.
Ringgold County		Unclassifiable/Attainment.
Sac County		Unclassifiable/Attainment.
Scott County		Unclassifiable/Attainment.
Shelby County		Unclassifiable/Attainment.
Sioux County		Unclassifiable/Attainment.
Story County		Unclassifiable/Attainment.
Tama County		Unclassifiable/Attainment.
Taylor County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Van Buren County		Unclassifiable/Attainment.
Wapello County		Unclassifiable/Attainment.
Warren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Webster County		Unclassifiable/Attainment.
Winnebago County		Unclassifiable/Attainment.
Winneshiek County		Unclassifiable/Attainment.
Woodbury County		Unclassifiable/Attainment.
Worth County		Unclassifiable/Attainment.
Wright County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

18. Section 81.317 is amended as follows:

a. By revising the table heading “Kansas—NO ₂” to read “Kansas—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Kansas—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.317

Kansas.

* * * * *

Kansas—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Allen County		Unclassifiable/Attainment.
Anderson County		Unclassifiable/Attainment.
Atchison County		Unclassifiable/Attainment.
Barber County		Unclassifiable/Attainment.
Barton County		Unclassifiable/Attainment.
Bourbon County		Unclassifiable/Attainment.
Brown County		Unclassifiable/Attainment.
Butler County		Unclassifiable/Attainment.
Chase County		Unclassifiable/Attainment.
Chautauqua County		Unclassifiable/Attainment.
Cherokee County		Unclassifiable/Attainment.
Cheyenne County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Cloud County		Unclassifiable/Attainment.
Coffey County		Unclassifiable/Attainment.
Comanche County		Unclassifiable/Attainment.
Cowley County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Decatur County		Unclassifiable/Attainment.
Dickinson County		Unclassifiable/Attainment.
Doniphan County		Unclassifiable/Attainment.
Douglas County		Unclassifiable/Attainment.
Edwards County		Unclassifiable/Attainment.
Elk County		Unclassifiable/Attainment.
Ellis County		Unclassifiable/Attainment.
Ellsworth County		Unclassifiable/Attainment.
Finney County		Unclassifiable/Attainment.
Ford County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Geary County		Unclassifiable/Attainment.
Gove County		Unclassifiable/Attainment.
Graham County		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Gray County		Unclassifiable/Attainment.
Greeley County		Unclassifiable/Attainment.
Greenwood County		Unclassifiable/Attainment.
Hamilton County		Unclassifiable/Attainment.
Harper County		Unclassifiable/Attainment.
Harvey County		Unclassifiable/Attainment.
Haskell County		Unclassifiable/Attainment.
Hodgeman County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Jewell County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Kearny County		Unclassifiable/Attainment.
Kingman County		Unclassifiable/Attainment.
Kiowa County		Unclassifiable/Attainment.
Labette County		Unclassifiable/Attainment.
Lane County		Unclassifiable/Attainment.
Leavenworth County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Linn County		Unclassifiable/Attainment.
Logan County		Unclassifiable/Attainment.
Lyon County		Unclassifiable/Attainment.
McPherson County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Marshall County		Unclassifiable/Attainment.
Meade County		Unclassifiable/Attainment.
Miami County		Unclassifiable/Attainment.
Mitchell County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Morris County		Unclassifiable/Attainment.
Morton County		Unclassifiable/Attainment.
Nemaha County		Unclassifiable/Attainment.
Neosho County		Unclassifiable/Attainment.
Ness County		Unclassifiable/Attainment.
Norton County		Unclassifiable/Attainment.
Osage County		Unclassifiable/Attainment.
Osborne County		Unclassifiable/Attainment.
Ottawa County		Unclassifiable/Attainment.
Pawnee County		Unclassifiable/Attainment.
Phillips County		Unclassifiable/Attainment.
Pottawatomie County		Unclassifiable/Attainment.
Pratt County		Unclassifiable/Attainment.
Rawlins County		Unclassifiable/Attainment.
Reno County		Unclassifiable/Attainment.
Republic County		Unclassifiable/Attainment.
Rice County		Unclassifiable/Attainment.
Riley County		Unclassifiable/Attainment.
Rooks County		Unclassifiable/Attainment.
Rush County		Unclassifiable/Attainment.
Russell County		Unclassifiable/Attainment.
Saline County		Unclassifiable/Attainment.
Scott County		Unclassifiable/Attainment.
Sedgwick County		Unclassifiable/Attainment.
Seward County		Unclassifiable/Attainment.
Shawnee County		Unclassifiable/Attainment.
Sheridan County		Unclassifiable/Attainment.
Sherman County		Unclassifiable/Attainment.
Smith County		Unclassifiable/Attainment.
Stafford County		Unclassifiable/Attainment.
Stanton County		Unclassifiable/Attainment.
Stevens County		Unclassifiable/Attainment.
Sumner County		Unclassifiable/Attainment.
Thomas County		Unclassifiable/Attainment.
Trego County		Unclassifiable/Attainment.
Wabaunsee County		Unclassifiable/Attainment.
Wallace County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wichita County		Unclassifiable/Attainment.
Wilson County		Unclassifiable/Attainment.
Woodson County		Unclassifiable/Attainment.
Wyandotte County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

19. Section 81.318 is amended as follows:

a. By revising the table heading “Kentucky—NO ₂” to read “Kentucky—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Kentucky—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.318

Kentucky.

* * * * *

Kentucky—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adair County		Unclassifiable/Attainment.
Allen County		Unclassifiable/Attainment.
Anderson County		Unclassifiable/Attainment.
Ballard County		Unclassifiable/Attainment.
Barren County		Unclassifiable/Attainment.
Bath County		Unclassifiable/Attainment.
Bell County		Unclassifiable/Attainment.
Boone County		Unclassifiable/Attainment.
Bourbon County		Unclassifiable/Attainment.
Boyd County		Unclassifiable/Attainment.
Boyle County		Unclassifiable/Attainment.
Bracken County		Unclassifiable/Attainment.
Breathitt County		Unclassifiable/Attainment.
Breckinridge County		Unclassifiable/Attainment.
Bullitt County		Unclassifiable/Attainment.
Butler County		Unclassifiable/Attainment.
Caldwell County		Unclassifiable/Attainment.
Calloway County		Unclassifiable/Attainment.
Campbell County		Unclassifiable/Attainment.
Carlisle County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Carter County		Unclassifiable/Attainment.
Casey County		Unclassifiable/Attainment.
Christian County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Clinton County		Unclassifiable/Attainment.
Crittenden County		Unclassifiable/Attainment.
Cumberland County		Unclassifiable/Attainment.
Daviess County		Unclassifiable/Attainment.
Edmonson County		Unclassifiable/Attainment.
Elliott County		Unclassifiable/Attainment.
Estill County		Unclassifiable/Attainment.
Fayette County		Unclassifiable/Attainment.
Fleming County		Unclassifiable/Attainment.
Floyd County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Fulton County		Unclassifiable/Attainment.
Gallatin County		Unclassifiable/Attainment.
Garrard County		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Graves County		Unclassifiable/Attainment.
Grayson County		Unclassifiable/Attainment.
Green County		Unclassifiable/Attainment.
Greenup County		Unclassifiable/Attainment.
Hancock County		Unclassifiable/Attainment.
Hardin County		Unclassifiable/Attainment.
Harlan County		Unclassifiable/Attainment.
Harrison County		Unclassifiable/Attainment.
Hart County		Unclassifiable/Attainment.
Henderson County		Unclassifiable/Attainment.
Henry County		Unclassifiable/Attainment.
Hickman County		Unclassifiable/Attainment.
Hopkins County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Jessamine County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Kenton County		Unclassifiable/Attainment.
Knott County		Unclassifiable/Attainment.
Knox County		Unclassifiable/Attainment.
Larue County		Unclassifiable/Attainment.
Laurel County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Leslie County		Unclassifiable/Attainment.
Letcher County		Unclassifiable/Attainment.
Lewis County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Livingston County		Unclassifiable/Attainment.
Logan County		Unclassifiable/Attainment.
Lyon County		Unclassifiable/Attainment.
McCracken County		Unclassifiable/Attainment.
McCreary County		Unclassifiable/Attainment.
McLean County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Magoffin County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Marshall County		Unclassifiable/Attainment.
Martin County		Unclassifiable/Attainment.
Mason County		Unclassifiable/Attainment.
Meade County		Unclassifiable/Attainment.
Menifee County		Unclassifiable/Attainment.
Mercer County		Unclassifiable/Attainment.
Metcalfe County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Morgan County		Unclassifiable/Attainment.
Muhlenberg County		Unclassifiable/Attainment.
Nelson County		Unclassifiable/Attainment.
Nicholas County		Unclassifiable/Attainment.
Ohio County		Unclassifiable/Attainment.
Oldham County		Unclassifiable/Attainment.
Owen County		Unclassifiable/Attainment.
Owsley County		Unclassifiable/Attainment.
Pendleton County		Unclassifiable/Attainment.
Perry County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Powell County		Unclassifiable/Attainment.
Pulaski County		Unclassifiable/Attainment.
Robertson County		Unclassifiable/Attainment.
Rockcastle County		Unclassifiable/Attainment.
Rowan County		Unclassifiable/Attainment.
Russell County		Unclassifiable/Attainment.
Scott County		Unclassifiable/Attainment.
Shelby County		Unclassifiable/Attainment.
Simpson County		Unclassifiable/Attainment.
Spencer County		Unclassifiable/Attainment.
Taylor County		Unclassifiable/Attainment.
Todd County		Unclassifiable/Attainment.
Trigg County		Unclassifiable/Attainment.
Trimble County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Warren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Webster County		Unclassifiable/Attainment.
Whitley County		Unclassifiable/Attainment.
Wolfe County		Unclassifiable/Attainment.
Woodford County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

20. Section 81.319 is amended as follows:

a. By revising the table heading “Louisiana—NO ₂” to read “Louisiana—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Louisiana—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.319

Louisiana.

* * * * *

Louisiana—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Acadia Parish		Unclassifiable/Attainment.
Allen Parish		Unclassifiable/Attainment.
Ascension Parish		Unclassifiable/Attainment.
Assumption Parish		Unclassifiable/Attainment.
Avoyelles Parish		Unclassifiable/Attainment.
Beauregard Parish		Unclassifiable/Attainment.
Bienville Parish		Unclassifiable/Attainment.
Bossier Parish		Unclassifiable/Attainment.
Caddo Parish		Unclassifiable/Attainment.
Calcasieu Parish		Unclassifiable/Attainment.
Caldwell Parish		Unclassifiable/Attainment.
Cameron Parish		Unclassifiable/Attainment.
Catahoula Parish		Unclassifiable/Attainment.
Claiborne Parish		Unclassifiable/Attainment.
Concordia Parish		Unclassifiable/Attainment.
De Soto Parish		Unclassifiable/Attainment.
East Baton Rouge Parish		Unclassifiable/Attainment.
East Carroll Parish		Unclassifiable/Attainment.
East Feliciana Parish		Unclassifiable/Attainment.
Evangeline Parish		Unclassifiable/Attainment.
Franklin Parish		Unclassifiable/Attainment.
Grant Parish		Unclassifiable/Attainment.
Iberia Parish		Unclassifiable/Attainment.
Iberville Parish		Unclassifiable/Attainment.
Jackson Parish		Unclassifiable/Attainment.
Jefferson Davis Parish		Unclassifiable/Attainment.
Jefferson Parish		Unclassifiable/Attainment.
La Salle Parish		Unclassifiable/Attainment.
Lafayette Parish		Unclassifiable/Attainment.
Lafourche Parish		Unclassifiable/Attainment.
Lincoln Parish		Unclassifiable/Attainment.
Livingston Parish		Unclassifiable/Attainment.
Madison Parish		Unclassifiable/Attainment.
Morehouse Parish		Unclassifiable/Attainment.
Natchitoches Parish		Unclassifiable/Attainment.
Orleans Parish		Unclassifiable/Attainment.
Ouachita Parish		Unclassifiable/Attainment.
Plaquemines Parish		Unclassifiable/Attainment.
Pointe Coupee Parish		Unclassifiable/Attainment.
Rapides Parish		Unclassifiable/Attainment.
Red River Parish		Unclassifiable/Attainment.
Richland Parish		Unclassifiable/Attainment.
Sabine Parish		Unclassifiable/Attainment.
St. Bernard Parish		Unclassifiable/Attainment.
St. Charles Parish		Unclassifiable/Attainment.
St. Helena Parish		Unclassifiable/Attainment.
St. James Parish		Unclassifiable/Attainment.
St. John the Baptist Parish		Unclassifiable/Attainment.
St. Landry Parish		Unclassifiable/Attainment.
St. Martin Parish		Unclassifiable/Attainment.
St. Tammany Parish		Unclassifiable/Attainment.
Tangipahoa Parish		Unclassifiable/Attainment.
Terrebonne Parish		Unclassifiable/Attainment.
Tensas Parish		Unclassifiable/Attainment.
Vermilion Parish		Unclassifiable/Attainment.
Vernon Parish		Unclassifiable/Attainment.
Union Parish		Unclassifiable/Attainment.
Washington Parish		Unclassifiable/Attainment.
Webster Parish		Unclassifiable/Attainment.
West Baton Rouge Parish		Unclassifiable/Attainment.
West Carroll Parish		Unclassifiable/Attainment.
West Feliciana Parish		Unclassifiable/Attainment.
Winn Parish		Unclassifiable/Attainment
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

21. Section 81.320 is amended as follows:

a. By revising the table heading “Maine—NO ₂” to read “Maine—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Maine—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.320

Maine.

* * * * *

Maine—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Maine		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

22. Section 81.321 is amended as follows:

a. By revising the table heading “Maryland—NO ₂” to read “Maryland—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Maryland—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.321

Maryland.

* * * * *

Maryland—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Allegany County		Unclassifiable/Attainment.
Anne Arundel County		Unclassifiable/Attainment.
Baltimore County		Unclassifiable/Attainment.
City of Baltimore		Unclassifiable/Attainment.
Calvert County		Unclassifiable/Attainment.
Caroline County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Cecil County		Unclassifiable/Attainment.
Charles County		Unclassifiable/Attainment.
Dorchester County		Unclassifiable/Attainment.
Frederick County		Unclassifiable/Attainment.
Garrett County		Unclassifiable/Attainment.
Harford County		Unclassifiable/Attainment.
Howard County		Unclassifiable/Attainment.
Kent County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Prince George's County		Unclassifiable/Attainment.
Queene Anne's County		Unclassifiable/Attainment.
St. Mary's County		Unclassifiable/Attainment.
Somerset County		Unclassifiable/Attainment.
Talbot County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wicomico County		Unclassifiable/Attainment.
Worchester County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

23. Section 81.322 is amended as follows:

a. By revising the table heading “Massachusetts—NO ₂” to read “Massachusetts—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Massachusetts—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.322

Massachusetts.

* * * * *

Massachusetts—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Massachusetts		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

24. Section 81.323 is amended as follows:

a. By revising the table heading “Michigan—NO ₂” to read “Michigan—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Michigan—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.323

Michigan.

* * * * *

Michigan—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Alcona County		Unclassifiable/Attainment.
Alger County		Unclassifiable/Attainment.
Allegan County		Unclassifiable/Attainment.
Alpena County		Unclassifiable/Attainment.
Antrim County		Unclassifiable/Attainment.
Arenac County		Unclassifiable/Attainment.
Baraga County		Unclassifiable/Attainment.
Barry County		Unclassifiable/Attainment.
Bay County		Unclassifiable/Attainment.
Benzie County		Unclassifiable/Attainment.
Berrien County		Unclassifiable/Attainment.
Branch County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Cass County		Unclassifiable/Attainment.
Charlevoix County		Unclassifiable/Attainment.
Cheboygan County		Unclassifiable/Attainment.
Chippewa County		Unclassifiable/Attainment.
Clare County		Unclassifiable/Attainment.
Clinton County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Delta County		Unclassifiable/Attainment.
Dickinson County		Unclassifiable/Attainment.
Eaton County		Unclassifiable/Attainment.
Emmet County		Unclassifiable/Attainment.
Genesee County		Unclassifiable/Attainment.
Gladwin County		Unclassifiable/Attainment.
Gogebic County		Unclassifiable/Attainment.
Grand Traverse County		Unclassifiable/Attainment.
Gratiot County		Unclassifiable/Attainment.
Hillsdale County		Unclassifiable/Attainment.
Houghton County		Unclassifiable/Attainment.
Huron County		Unclassifiable/Attainment.
Ingham County		Unclassifiable/Attainment.
Ionia County		Unclassifiable/Attainment.
Iosco County		Unclassifiable/Attainment.
Iron County		Unclassifiable/Attainment.
Isabella County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Kalamazoo County		Unclassifiable/Attainment.
Kalkaska County		Unclassifiable/Attainment.
Kent County		Unclassifiable/Attainment.
Keweenaw County		Unclassifiable/Attainment.
Lake County		Unclassifiable/Attainment.
Lapeer County		Unclassifiable/Attainment.
Leelanau County		Unclassifiable/Attainment.
Lenawee County		Unclassifiable/Attainment.
Livingston County		Unclassifiable/Attainment.
Luce County		Unclassifiable/Attainment.
Mackinac County		Unclassifiable/Attainment.
Macomb County		Unclassifiable/Attainment.
Manistee County		Unclassifiable/Attainment.
Marquette County		Unclassifiable/Attainment.
Mason County		Unclassifiable/Attainment.
Mecosta County		Unclassifiable/Attainment.
Menominee County		Unclassifiable/Attainment.
Midland County		Unclassifiable/Attainment.
Missaukee County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montcalm County		Unclassifiable/Attainment.
Montmorency County		Unclassifiable/Attainment.
Muskegon County		Unclassifiable/Attainment.
Newaygo County		Unclassifiable/Attainment.
Oakland County		Unclassifiable/Attainment.
Oceana County		Unclassifiable/Attainment.
Ogemaw County		Unclassifiable/Attainment.
Ontonagon County		Unclassifiable/Attainment.
Osceola County		Unclassifiable/Attainment.
Oscoda County		Unclassifiable/Attainment.
Otsego County		Unclassifiable/Attainment.
Ottawa County		Unclassifiable/Attainment.
Presque Isle County		Unclassifiable/Attainment.
Roscommon County		Unclassifiable/Attainment.
Saginaw County		Unclassifiable/Attainment.
St. Clair County		Unclassifiable/Attainment.
St. Joseph County		Unclassifiable/Attainment.
Sanilac County		Unclassifiable/Attainment.
Schoolcraft County		Unclassifiable/Attainment.
Shiawassee County		Unclassifiable/Attainment.
Tuscola County		Unclassifiable/Attainment.
Van Buren County		Unclassifiable/Attainment.
Washtenaw County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Wexford County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

25. Section 81.324 is amended as follows:

a. By revising the table heading “Minnesota—NO ₂” to read “Minnesota—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Minnesota—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.324

Minnesota.

* * * * *

Minnesota—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Minnesota		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

26. Section 81.325 is amended as follows:

a. By revising the table heading “Mississippi—NO ₂” to read “Mississippi—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Mississippi—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.325

Mississippi.

* * * * *

Mississippi—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adams County		Unclassifiable/Attainment.
Alcorn County		Unclassifiable/Attainment.
Amite County		Unclassifiable/Attainment.
Attala County		Unclassifiable/Attainment.
Benton County		Unclassifiable/Attainment.
Bolivar County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Chickasaw County		Unclassifiable/Attainment.
Choctaw County		Unclassifiable/Attainment.
Claiborne County		Unclassifiable/Attainment.
Clarke County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Coahoma County		Unclassifiable/Attainment.
Copiah County		Unclassifiable/Attainment.
Covington County		Unclassifiable/Attainment.
DeSoto County		Unclassifiable/Attainment.
Forrest County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
George County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Grenada County		Unclassifiable/Attainment.
Hancock County		Unclassifiable/Attainment.
Harrison County		Unclassifiable/Attainment.
Hinds County		Unclassifiable/Attainment.
Holmes County		Unclassifiable/Attainment.
Humphreys County		Unclassifiable/Attainment.
Issaquena County		Unclassifiable/Attainment.
Itawamba County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jasper County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Jefferson Davis County		Unclassifiable/Attainment.
Jones County		Unclassifiable/Attainment.
Kemper County		Unclassifiable/Attainment.
Lafayette County		Unclassifiable/Attainment.
Lamar County		Unclassifiable/Attainment.
Lauderdale County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Leake County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Leflore County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Lowndes County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Marshall County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Neshoba County		Unclassifiable/Attainment.
Newton County		Unclassifiable/Attainment.
Noxubee County		Unclassifiable/Attainment.
Oktibbeha County		Unclassifiable/Attainment.
Panola County		Unclassifiable/Attainment.
Pearl River County		Unclassifiable/Attainment.
Perry County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Pontotoc County		Unclassifiable/Attainment.
Prentiss County		Unclassifiable/Attainment.
Quitman County		Unclassifiable/Attainment.
Rankin County		Unclassifiable/Attainment.
Scott County		Unclassifiable/Attainment.
Sharkey County		Unclassifiable/Attainment.
Simpson County		Unclassifiable/Attainment.
Smith County		Unclassifiable/Attainment.
Stone County		Unclassifiable/Attainment.
Sunflower County		Unclassifiable/Attainment.
Tallahatchie County		Unclassifiable/Attainment.
Tate County		Unclassifiable/Attainment.
Tippah County		Unclassifiable/Attainment.
Tishomingo County		Unclassifiable/Attainment.
Tunica County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Walthall County		Unclassifiable/Attainment.
Warren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Webster County		Unclassifiable/Attainment.
Wilkinson County		Unclassifiable/Attainment.
Winston County		Unclassifiable/Attainment.
Yalobusha County		Unclassifiable/Attainment.
Yazoo County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

27. Section 81.326 is amended as follows:

a. By revising the table heading “Missouri—NO ₂” to read “Missouri—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Missouri—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.326

Missouri.

* * * * *

Missouri—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adair County		Unclassifiable/Attainment.
Andrew County		Unclassifiable/Attainment.
Atchison County		Unclassifiable/Attainment.
Audrain County		Unclassifiable/Attainment.
Barry County		Unclassifiable/Attainment.
Barton County		Unclassifiable/Attainment.
Bates County		Unclassifiable/Attainment.
Benton County		Unclassifiable/Attainment.
Bollinger County		Unclassifiable/Attainment.
Boone County		Unclassifiable/Attainment.
Buchanan County		Unclassifiable/Attainment.
Butler County		Unclassifiable/Attainment.
Caldwell County		Unclassifiable/Attainment.
Callaway County		Unclassifiable/Attainment.
Camden County		Unclassifiable/Attainment.
Cape Girardeau County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Carter County		Unclassifiable/Attainment.
Cass County		Unclassifiable/Attainment.
Cedar County		Unclassifiable/Attainment.
Chariton County		Unclassifiable/Attainment.
Christian County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Clinton County		Unclassifiable/Attainment.
Cole County		Unclassifiable/Attainment.
Cooper County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Dade County		Unclassifiable/Attainment.
Dallas County		Unclassifiable/Attainment.
Daviess County		Unclassifiable/Attainment.
DeKalb County		Unclassifiable/Attainment.
Dent County		Unclassifiable/Attainment.
Douglas County		Unclassifiable/Attainment.
Dunklin County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Gasconade County		Unclassifiable/Attainment.
Gentry County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Grundy County		Unclassifiable/Attainment.
Harrison County		Unclassifiable/Attainment.
Henry County		Unclassifiable/Attainment.
Hickory County		Unclassifiable/Attainment.
Holt County		Unclassifiable/Attainment.
Howard County		Unclassifiable/Attainment.
Howell County		Unclassifiable/Attainment.
Iron County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jasper County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Knox County		Unclassifiable/Attainment.
Laclede County		Unclassifiable/Attainment.
Lafayette County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Lewis County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Linn County		Unclassifiable/Attainment.
Livingston County		Unclassifiable/Attainment.
McDonald County		Unclassifiable/Attainment.
Macon County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Maries County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Mercer County		Unclassifiable/Attainment.
Miller County		Unclassifiable/Attainment.
Mississippi County		Unclassifiable/Attainment.
Moniteau County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Morgan County		Unclassifiable/Attainment.
New Madrid County		Unclassifiable/Attainment.
Newton County		Unclassifiable/Attainment.
Nodaway County		Unclassifiable/Attainment.
Oregon County		Unclassifiable/Attainment.
Osage County		Unclassifiable/Attainment.
Ozark County		Unclassifiable/Attainment.
Pemiscot County		Unclassifiable/Attainment.
Perry County		Unclassifiable/Attainment.
Pettis County		Unclassifiable/Attainment.
Phelps County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Platte County		Unclassifiable/Attainment.
Polk County		Unclassifiable/Attainment.
Pulaski County		Unclassifiable/Attainment.
Putnam County		Unclassifiable/Attainment.
Ralls County		Unclassifiable/Attainment.
Randolph County		Unclassifiable/Attainment.
Ray County		Unclassifiable/Attainment.
Reynolds County		Unclassifiable/Attainment.
Ripley County		Unclassifiable/Attainment.
St. Charles County		Unclassifiable/Attainment.
St. Clair County		Unclassifiable/Attainment.
St. Genevieve County		Unclassifiable/Attainment.
St. Francois County		Unclassifiable/Attainment.
St. Louis County		Unclassifiable/Attainment.
St. Louis City		Unclassifiable/Attainment.
Saline County		Unclassifiable/Attainment.
Schuyler County		Unclassifiable/Attainment.
Scotland County		Unclassifiable/Attainment.
Scott County		Unclassifiable/Attainment.
Shannon County		Unclassifiable/Attainment.
Shelby County		Unclassifiable/Attainment.
Stoddard County		Unclassifiable/Attainment.
Stone County		Unclassifiable/Attainment.
Sullivan County		Unclassifiable/Attainment.
Taney County		Unclassifiable/Attainment.
Texas County		Unclassifiable/Attainment.
Vernon County		Unclassifiable/Attainment.
Warren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Webster County		Unclassifiable/Attainment.
Worth County		Unclassifiable/Attainment.
Wright County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

28. Section 81.327 is amended as follows:

a. By revising the table heading “Montana—NO ₂” to read “Montana—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Montana—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.327

Montana.

* * * * *

Montana—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Beaverhead County		Unclassifiable/Attainment.
Big Horn County		Unclassifiable/Attainment.
Blaine County		Unclassifiable/Attainment.
Broadwater County		Unclassifiable/Attainment.
Carbon County		Unclassifiable/Attainment.
Carter County		Unclassifiable/Attainment.
Cascade County		Unclassifiable/Attainment.
Chouteau County		Unclassifiable/Attainment.
Custer County		Unclassifiable/Attainment.
Daniels County		Unclassifiable/Attainment.
Dawson County		Unclassifiable/Attainment.
Deer Lodge County		Unclassifiable/Attainment.
Fallon County		Unclassifiable/Attainment.
Fergus County		Unclassifiable/Attainment.
Flathead County		Unclassifiable/Attainment.
Gallatin County		Unclassifiable/Attainment.
Garfield County		Unclassifiable/Attainment.
Glacier County		Unclassifiable/Attainment.
Golden Valley County		Unclassifiable/Attainment.
Granite County		Unclassifiable/Attainment.
Hill County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Judith Basin County		Unclassifiable/Attainment.
Lake County		Unclassifiable/Attainment.
Lewis and Clark County		Unclassifiable/Attainment.
Liberty County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
McCone County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Meagher County		Unclassifiable/Attainment.
Mineral County		Unclassifiable/Attainment.
Missoula County		Unclassifiable/Attainment.
Musselshell County		Unclassifiable/Attainment.
Park County		Unclassifiable/Attainment.
Petroleum County		Unclassifiable/Attainment.
Phillips County		Unclassifiable/Attainment.
Pondera County		Unclassifiable/Attainment.
Powder River County		Unclassifiable/Attainment.
Powell County		Unclassifiable/Attainment.
Prairie County		Unclassifiable/Attainment.
Ravalli County		Unclassifiable/Attainment.
Richland County		Unclassifiable/Attainment.
Roosevelt County		Unclassifiable/Attainment.
Rosebud County		Unclassifiable/Attainment.
Sanders County		Unclassifiable/Attainment.
Sheridan County		Unclassifiable/Attainment.
Silver Bow County		Unclassifiable/Attainment.
Stillwater County		Unclassifiable/Attainment.
Sweet Grass County		Unclassifiable/Attainment.
Teton County		Unclassifiable/Attainment.
Toole County		Unclassifiable/Attainment.
Treasure County		Unclassifiable/Attainment.
Valley County		Unclassifiable/Attainment.
Wheatland County		Unclassifiable/Attainment.
Wibaux County		Unclassifiable/Attainment.
Yellowstone County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

29. Section 81.328 is amended as follows:

a. By revising the table heading “Nebraska—NO ₂” to read “Nebraska—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Nebraska—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.328

Nebraska.

* * * * *

Nebraska—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adams County		Unclassifiable/Attainment.
Antelope County		Unclassifiable/Attainment.
Arthur County		Unclassifiable/Attainment.
Banner County		Unclassifiable/Attainment.
Blaine County		Unclassifiable/Attainment.
Boone County		Unclassifiable/Attainment.
Box Butte County		Unclassifiable/Attainment.
Boyd County		Unclassifiable/Attainment.
Brown County		Unclassifiable/Attainment.
Buffalo County		Unclassifiable/Attainment.
Burt County		Unclassifiable/Attainment.
Butler County		Unclassifiable/Attainment.
Cass County		Unclassifiable/Attainment.
Cedar County		Unclassifiable/Attainment.
Chase County		Unclassifiable/Attainment.
Cherry County		Unclassifiable/Attainment.
Cheyenne County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Colfax County		Unclassifiable/Attainment.
Cuming County		Unclassifiable/Attainment.
Custer County		Unclassifiable/Attainment.
Dakota County		Unclassifiable/Attainment.
Dawes County		Unclassifiable/Attainment.
Dawson County		Unclassifiable/Attainment.
Deuel County		Unclassifiable/Attainment.
Dixon County		Unclassifiable/Attainment.
Dodge County		Unclassifiable/Attainment.
Douglas County		Unclassifiable/Attainment.
Dundy County		Unclassifiable/Attainment.
Fillmore County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Frontier County		Unclassifiable/Attainment.
Furnas County		Unclassifiable/Attainment.
Gage County		Unclassifiable/Attainment.
Garden County		Unclassifiable/Attainment.
Garfield County		Unclassifiable/Attainment.
Gosper County		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Greeley County		Unclassifiable/Attainment.
Hall County		Unclassifiable/Attainment.
Hamilton County		Unclassifiable/Attainment.
Harlan County		Unclassifiable/Attainment.
Hayes County		Unclassifiable/Attainment.
Hitchcock County		Unclassifiable/Attainment.
Holt County		Unclassifiable/Attainment.
Hooker County		Unclassifiable/Attainment.
Howard County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Kearney County		Unclassifiable/Attainment.
Keith County		Unclassifiable/Attainment.
Keya Paha County		Unclassifiable/Attainment.
Kimball County		Unclassifiable/Attainment.
Knox County		Unclassifiable/Attainment.
Lancaster County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Logan County		Unclassifiable/Attainment.
Loup County		Unclassifiable/Attainment.
McPherson County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Merrick County		Unclassifiable/Attainment.
Morrill County		Unclassifiable/Attainment.
Nance County		Unclassifiable/Attainment.
Nemaha County		Unclassifiable/Attainment.
Nuckolls County		Unclassifiable/Attainment.
Otoe County		Unclassifiable/Attainment.
Pawnee County		Unclassifiable/Attainment.
Perkins County		Unclassifiable/Attainment.
Phelps County		Unclassifiable/Attainment.
Pierce County		Unclassifiable/Attainment.
Platte County		Unclassifiable/Attainment.
Polk County		Unclassifiable/Attainment.
Red Willow County		Unclassifiable/Attainment.
Richardson County		Unclassifiable/Attainment.
Rock County		Unclassifiable/Attainment.
Saline County		Unclassifiable/Attainment.
Sarpy County		Unclassifiable/Attainment.
Saunders County		Unclassifiable/Attainment.
Scotts Bluff County		Unclassifiable/Attainment.
Seward County		Unclassifiable/Attainment.
Sheridan County		Unclassifiable/Attainment.
Sherman County		Unclassifiable/Attainment.
Sioux County		Unclassifiable/Attainment.
Stanton County		Unclassifiable/Attainment.
Thayer County		Unclassifiable/Attainment.
Thomas County		Unclassifiable/Attainment.
Thurston County		Unclassifiable/Attainment.
Valley County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Webster County		Unclassifiable/Attainment.
Wheeler County		Unclassifiable/Attainment.
York County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

30. Section 81.329 is amended as follows:

a. By revising the table heading “Nevada—NO ₂” to read “Nevada—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Nevada—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.329

Nevada.

* * * * *

Nevada—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Nevada 2		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.
2 Statewide refers to hydrographic areas as shown on the State of Nevada Division of Water Resources' map titled “Water Resources and Inter-basin Flows” (September 1971), as revised to include a division of Carson Desert (area 101) into two areas, a smaller area 101 and area 101A, and a division of Boulder Flat (area 61) into an Upper Unit 61 and a Lower Unit 61. See also 67 FR 12474 (March 19, 2002).

31. Section 81.330 is amended as follows:

a. By revising the table heading “New Hampshire—NO ₂” to read “New Hampshire—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “New Hampshire—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.330

New Hampshire.

* * * * *

New Hampshire—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of New Hampshire		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

32. Section 81.331 is amended as follows:

a. By revising the table heading “New Jersey—NO ₂” to read “New Jersey—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “New Jersey—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.331

New Jersey.

* * * * *

New Jersey—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of New Jersey		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

33. Section 81.332 is amended as follows:

a. By revising the table heading “New Mexico—NO ₂” to read “New Mexico—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “New Mexico—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.332

New Mexico.

* * * * *

New Mexico—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Bernalillo County		Unclassifiable/Attainment.
Catron County		Unclassifiable/Attainment.
Chaves County		Unclassifiable/Attainment.
Cibola County		Unclassifiable/Attainment.
Colfax County		Unclassifiable/Attainment.
Curry County		Unclassifiable/Attainment.
De Baca County		Unclassifiable/Attainment.
Doña Ana County		Unclassifiable/Attainment.
Eddy County		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Guadalupe County		Unclassifiable/Attainment.
Harding County		Unclassifiable/Attainment.
Hidalgo County		Unclassifiable/Attainment.
Lea County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Los Alamos County		Unclassifiable/Attainment.
Luna County		Unclassifiable/Attainment.
McKinley County		Unclassifiable/Attainment.
Mora County		Unclassifiable/Attainment.
Otero County		Unclassifiable/Attainment.
Quay County		Unclassifiable/Attainment.
Río Arriba County		Unclassifiable/Attainment.
Roosevelt County		Unclassifiable/Attainment.
Sandoval County		Unclassifiable/Attainment.
San Juan County		Unclassifiable/Attainment.
San Miguel County		Unclassifiable/Attainment.
Santa Fe County		Unclassifiable/Attainment.
Sierra County		Unclassifiable/Attainment.
Socorro County		Unclassifiable/Attainment.
Taos County		Unclassifiable/Attainment.
Torrance County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Valencia County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

34. Section 81.333 is amended as follows:

a. By revising the table heading “New York—NO ₂” to read “New York—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “New York—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.333

New York.

* * * * *

New York—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Albany-Schenectady-Troy, NY:
Albany County		Unclassifiable/Attainment.
Rensselaer County		Unclassifiable/Attainment.
Saratoga County		Unclassifiable/Attainment.
Schenectady County		Unclassifiable/Attainment.
Schoharie County		Unclassifiable/Attainment.
Buffalo-Niagara Falls, NY:
Erie County		Unclassifiable/Attainment.
Niagara County		Unclassifiable/Attainment.
New York-Northern New Jersey-Long Island, NY:
Bronx County		Unclassifiable/Attainment.
Kings County		Unclassifiable/Attainment.
Nassau County		Unclassifiable/Attainment.
New York County		Unclassifiable/Attainment.
Putnam County		Unclassifiable/Attainment.
Queens County		Unclassifiable/Attainment.
Richmond County		Unclassifiable/Attainment.
Rockland County		Unclassifiable/Attainment.
Suffolk County		Unclassifiable/Attainment.
Westchester County		Unclassifiable/Attainment.
Poughkeepsie-Newburgh-Middletown, NY:
Dutchess County		Unclassifiable/Attainment.
Orange County		Unclassifiable/Attainment.
Rochester, NY:
Livingston County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Ontario County		Unclassifiable/Attainment.
Orleans County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Syracuse, NY:
Madison County		Unclassifiable/Attainment.
Onondaga County		Unclassifiable/Attainment.
Oswego County		Unclassifiable/Attainment.
Rest of State		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

35. Section 81.334 is amended as follows:

a. By revising the table heading “North Carolina—NO ₂” to read “North Carolina—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “North Carolina—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.334

North Carolina.

* * * * *

North Carolina—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Buncombe County (part)		Unclassifiable/Attainment.
Asheville Township, Avery Creek Township, Limestone Township, Lower Hominy Township, Reems Creek Township, Swannanoa Township
Buncombe County (remainder of county)		Unclassifiable/Attainment.
Each Individual Township:
Caswell County (part)		Unclassifiable/Attainment.
Dan River Township, Yanceyville Township
Caswell County (rest of county)		Unclassifiable/Attainment.
Each Individual Township
Forsyth County (part)		Unclassifiable/Attainment.
Abbotts Creek Township, Broadbay Township, Kernersville Township, Middle Fork Township, Old Town Township, South Fork Township, Winston Township
Forsyth County (rest of county)		Unclassifiable/Attainment.
Each Individual Township
Guilford County (part)		Unclassifiable/Attainment.
Bruce Township, Center Grove Township, Deep River Township, Fentress Township, Friendship Township, Gilmer Township, High Point Township, Jamestown Township, Jefferson Township, Monroe Township, Morehead Township, Sumner Township
Guilford County (rest of county)		Unclassifiable/Attainment.
Each Individual Township
Mecklenburg County (part)		Unclassifiable/Attainment.
Township 1 Charlotte, Township 2 Berryhill, Township 5 Providence, Township 7 Crab Orchard, Township 12 Paw Creek
Mecklenburg County (rest of county)		Unclassifiable/Attainment.
Each Individual Township
New Hanover County (part)		Unclassifiable/Attainment.
Harnett Township, Masonboro Township, Wilmington Township
New Hanover County (rest of county)		Unclassifiable/Attainment.
Each Individual Township
Wake County (part)		Unclassifiable/Attainment.
Cary Township, Meredith Township
Wake County (rest of county)		Unclassifiable/Attainment.
Each Individual Township
Rest of State:
Each Individual Township		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

36. Section 81.335 is amended as follows:

a. By revising the table heading “North Dakota—NO ₂” to read “North Dakota—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “North Dakota—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.335

North Dakota.

* * * * *

North Dakota—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of North Dakota		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

37. Section 81.336 is amended as follows:

a. By revising the table heading “Ohio—NO ₂” to read “Ohio—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Ohio—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.336

Ohio.

* * * * *

Ohio—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adams County		Unclassifiable/Attainment.
Allen County		Unclassifiable/Attainment.
Ashland County		Unclassifiable/Attainment.
Ashtabula County		Unclassifiable/Attainment.
Athens County		Unclassifiable/Attainment.
Auglaize County		Unclassifiable/Attainment.
Belmont County		Unclassifiable/Attainment.
Brown County		Unclassifiable/Attainment.
Butler County		Unclassifiable/Attainment.
Carroll County		Unclassifiable/Attainment.
Champaign County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Clermont County		Unclassifiable/Attainment.
Clinton County		Unclassifiable/Attainment.
Columbiana County		Unclassifiable/Attainment.
Coshocton County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Cuyahoga County		Unclassifiable/Attainment.
Darke County		Unclassifiable/Attainment.
Defiance County		Unclassifiable/Attainment.
Delaware County		Unclassifiable/Attainment.
Erie County		Unclassifiable/Attainment.
Fairfield County		Unclassifiable/Attainment.
Fayette County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Fulton County		Unclassifiable/Attainment.
Gallia County		Unclassifiable/Attainment.
Geauga County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Guernsey County		Unclassifiable/Attainment.
Hamilton County		Unclassifiable/Attainment.
Hancock County		Unclassifiable/Attainment.
Hardin County		Unclassifiable/Attainment.
Harrison County		Unclassifiable/Attainment.
Henry County		Unclassifiable/Attainment.
Highland County		Unclassifiable/Attainment.
Hocking County		Unclassifiable/Attainment.
Holmes County		Unclassifiable/Attainment.
Huron County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Knox County		Unclassifiable/Attainment.
Lake County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Licking County		Unclassifiable/Attainment.
Logan County		Unclassifiable/Attainment.
Lorain County		Unclassifiable/Attainment.
Lucas County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Mahoning County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Medina County		Unclassifiable/Attainment.
Meigs County		Unclassifiable/Attainment.
Mercer County		Unclassifiable/Attainment.
Miami County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Morgan County		Unclassifiable/Attainment.
Morrow County		Unclassifiable/Attainment.
Muskingum County		Unclassifiable/Attainment.
Noble County		Unclassifiable/Attainment.
Ottawa County		Unclassifiable/Attainment.
Paulding County		Unclassifiable/Attainment.
Perry County		Unclassifiable/Attainment.
Pickaway County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Portage County		Unclassifiable/Attainment.
Preble County		Unclassifiable/Attainment.
Putnam County		Unclassifiable/Attainment.
Richland County		Unclassifiable/Attainment.
Ross County		Unclassifiable/Attainment.
Sandusky County		Unclassifiable/Attainment.
Scioto County		Unclassifiable/Attainment.
Seneca County		Unclassifiable/Attainment.
Shelby County		Unclassifiable/Attainment.
Stark County		Unclassifiable/Attainment.
Summit County		Unclassifiable/Attainment.
Trumbull County		Unclassifiable/Attainment.
Tuscarawas County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Van Wert County		Unclassifiable/Attainment.
Vinton County		Unclassifiable/Attainment.
Warren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Williams County		Unclassifiable/Attainment.
Wood County		Unclassifiable/Attainment.
Wyandot County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

38. Section 81.337 is amended as follows:

a. By revising the table heading “Oklahoma—NO ₂” to read “Oklahoma—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Oklahoma—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.337

Oklahoma.

* * * * *

Oklahoma—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adair County		Unclassifiable/Attainment.
Alfalfa County		Unclassifiable/Attainment.
Atoka County		Unclassifiable/Attainment.
Beaver County		Unclassifiable/Attainment.
Beckham County		Unclassifiable/Attainment.
Blaine County		Unclassifiable/Attainment.
Bryan County		Unclassifiable/Attainment.
Caddo County		Unclassifiable/Attainment.
Canadian County		Unclassifiable/Attainment.
Carter County		Unclassifiable/Attainment.
Cherokee County		Unclassifiable/Attainment.
Choctaw County		Unclassifiable/Attainment.
Cimarron County		Unclassifiable/Attainment.
Cleveland County		Unclassifiable/Attainment.
Coal County		Unclassifiable/Attainment.
Comanche County		Unclassifiable/Attainment.
Cotton County		Unclassifiable/Attainment.
Craig County		Unclassifiable/Attainment.
Creek County		Unclassifiable/Attainment.
Custer County		Unclassifiable/Attainment.
Delaware County		Unclassifiable/Attainment.
Dewey County		Unclassifiable/Attainment.
Ellis County		Unclassifiable/Attainment.
Garfield County		Unclassifiable/Attainment.
Garvin County		Unclassifiable/Attainment.
Grady County		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Greer County		Unclassifiable/Attainment.
Harmon County		Unclassifiable/Attainment.
Harper County		Unclassifiable/Attainment.
Haskell County		Unclassifiable/Attainment.
Hughes County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Johnston County		Unclassifiable/Attainment.
Kay County		Unclassifiable/Attainment.
Kingfisher County		Unclassifiable/Attainment.
Kiowa County		Unclassifiable/Attainment.
Latimer County		Unclassifiable/Attainment.
Le Flore County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Logan County		Unclassifiable/Attainment.
Love County		Unclassifiable/Attainment.
Major County		Unclassifiable/Attainment.
Marshall County		Unclassifiable/Attainment.
Mayes County		Unclassifiable/Attainment.
McClain County		Unclassifiable/Attainment.
McCurtain County		Unclassifiable/Attainment.
McIntosh County		Unclassifiable/Attainment.
Murray County		Unclassifiable/Attainment.
Muskogee County		Unclassifiable/Attainment.
Noble County		Unclassifiable/Attainment.
Nowata County		Unclassifiable/Attainment.
Okfuskee County		Unclassifiable/Attainment.
Oklahoma County		Unclassifiable/Attainment.
Okmulgee County		Unclassifiable/Attainment.
Osage County		Unclassifiable/Attainment.
Ottawa County		Unclassifiable/Attainment.
Pawnee County		Unclassifiable/Attainment.
Payne County		Unclassifiable/Attainment.
Pittsburg County		Unclassifiable/Attainment.
Pontotoc County		Unclassifiable/Attainment.
Pottawatomie County		Unclassifiable/Attainment.
Pushmataha County		Unclassifiable/Attainment.
Roger Mills County		Unclassifiable/Attainment.
Rogers County		Unclassifiable/Attainment.
Seminole County		Unclassifiable/Attainment.
Sequoyah County		Unclassifiable/Attainment.
Stephens County		Unclassifiable/Attainment.
Texas County		Unclassifiable/Attainment.
Tillman County		Unclassifiable/Attainment.
Tulsa County		Unclassifiable/Attainment.
Wagoner County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Washita County		Unclassifiable/Attainment.
Woods County		Unclassifiable/Attainment.
Woodward County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

39. Section 81.338 is amended as follows:

a. By revising the table heading “Oregon—NO ₂” to read “Oregon—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Oregon—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.338

Oregon.

* * * * *

Oregon—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Baker County		Unclassifiable/Attainment.
Benton County		Unclassifiable/Attainment.
Clackamas County		Unclassifiable/Attainment.
Clatsop County		Unclassifiable/Attainment.
Columbia County		Unclassifiable/Attainment.
Coos County		Unclassifiable/Attainment.
Crook County		Unclassifiable/Attainment.
Curry County		Unclassifiable/Attainment.
Deschutes County		Unclassifiable/Attainment.
Douglas County		Unclassifiable/Attainment.
Gilliam County		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Harney County		Unclassifiable/Attainment.
Hood River County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Josephine County		Unclassifiable/Attainment.
Klamath County		Unclassifiable/Attainment.
Lake County		Unclassifiable/Attainment.
Lane County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Linn County		Unclassifiable/Attainment.
Malheur County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Morrow County		Unclassifiable/Attainment.
Multnomah County		Unclassifiable/Attainment.
Polk County		Unclassifiable/Attainment.
Sherman County		Unclassifiable/Attainment.
Tillamook County		Unclassifiable/Attainment.
Umatilla County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Wallowa County		Unclassifiable/Attainment.
Wasco County		Unclassifiable/Attainment.
Washington County	0	Unclassifiable/Attainment.
Wheeler County		Unclassifiable/Attainment.
Yamhill County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

40. Section 81.339 is amended as follows:

a. By revising the table heading “Pennsylvania—NO ₂” to read “Pennsylvania—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Pennsylvania—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.339

Pennsylvania.

* * * * *

Pennsylvania—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adams County		Unclassifiable/Attainment.
Allegheny County		Unclassifiable/Attainment.
Armstrong County		Unclassifiable/Attainment.
Beaver County		Unclassifiable/Attainment.
Bedford County		Unclassifiable/Attainment.
Berks County		Unclassifiable/Attainment.
Blair County		Unclassifiable/Attainment.
Bradford County		Unclassifiable/Attainment.
Bucks County		Unclassifiable/Attainment.
Butler County		Unclassifiable/Attainment.
Cambria County		Unclassifiable/Attainment.
Cameron County		Unclassifiable/Attainment.
Carbon County		Unclassifiable/Attainment.
Centre County		Unclassifiable/Attainment.
Chester County		Unclassifiable/Attainment.
Clarion County		Unclassifiable/Attainment.
Clearfield County		Unclassifiable/Attainment.
Clinton County		Unclassifiable/Attainment.
Columbia County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Cumberland County		Unclassifiable/Attainment.
Dauphin County		Unclassifiable/Attainment.
Delaware County		Unclassifiable/Attainment.
Elk County		Unclassifiable/Attainment.
Erie County		Unclassifiable/Attainment.
Fayette County		Unclassifiable/Attainment.
Forest County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Fulton County		Unclassifiable/Attainment.
Greene County		Unclassifiable/Attainment.
Huntingdon County		Unclassifiable/Attainment.
Indiana County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Juniata County		Unclassifiable/Attainment.
Lackawanna County		Unclassifiable/Attainment.
Lancaster County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Lebanon County		Unclassifiable/Attainment.
Lehigh County		Unclassifiable/Attainment.
Luzerne County		Unclassifiable/Attainment.
Lycoming County		Unclassifiable/Attainment.
McKean County		Unclassifiable/Attainment.
Mercer County		Unclassifiable/Attainment.
Mifflin County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Montour County		Unclassifiable/Attainment.
Northampton County		Unclassifiable/Attainment.
Northumberland County		Unclassifiable/Attainment.
Perry County		Unclassifiable/Attainment.
Philadelphia County		Unclassifiable/Attainment.
Pike County		Unclassifiable/Attainment.
Potter County		Unclassifiable/Attainment.
Schuylkill County		Unclassifiable/Attainment.
Snyder County		Unclassifiable/Attainment.
Somerset County		Unclassifiable/Attainment.
Sullivan County		Unclassifiable/Attainment.
Susquehanna County		Unclassifiable/Attainment.
Tioga County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Venango County		Unclassifiable/Attainment.
Warren County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Wayne County		Unclassifiable/Attainment.
Westmoreland County		Unclassifiable/Attainment.
Wyoming County		Unclassifiable/Attainment.
York County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

41. Section 81.340 is amended as follows:

a. By revising the table heading “Rhode Island—NO ₂” to read “Rhode Island—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Rhode Island—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.340

Rhode Island.

* * * * *

Rhode Island—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Rhode Island		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

42. Section 81.341 is amended as follows:

a. By revising the table heading “South Carolina—NO ₂” to read “South Carolina—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “South Carolina—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.341

South Carolina.

* * * * *

South Carolina—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Abbeville County		Unclassifiable/Attainment.
Aiken County		Unclassifiable/Attainment.
Allendale County		Unclassifiable/Attainment.
Anderson County		Unclassifiable/Attainment.
Bamberg County		Unclassifiable/Attainment.
Barnwell County		Unclassifiable/Attainment.
Beaufort County		Unclassifiable/Attainment.
Berkeley County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Charleston County		Unclassifiable/Attainment.
Cherokee County		Unclassifiable/Attainment.
Chester County		Unclassifiable/Attainment.
Chesterfield County		Unclassifiable/Attainment.
Clarendon County		Unclassifiable/Attainment.
Colleton County		Unclassifiable/Attainment.
Darlington County		Unclassifiable/Attainment.
Dillon County		Unclassifiable/Attainment.
Dorchester County		Unclassifiable/Attainment.
Edgefield County		Unclassifiable/Attainment.
Fairfield County		Unclassifiable/Attainment.
Florence County		Unclassifiable/Attainment.
Georgetown County		Unclassifiable/Attainment.
Greenwood County		Unclassifiable/Attainment.
Greenville County		Unclassifiable/Attainment.
Hampton County		Unclassifiable/Attainment.
Horry County		Unclassifiable/Attainment.
Jasper County		Unclassifiable/Attainment.
Kershaw County		Unclassifiable/Attainment.
Lancaster County		Unclassifiable/Attainment.
Laurens County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Lexington County		Unclassifiable/Attainment.
McCormick County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Marlboro County		Unclassifiable/Attainment.
Newberry County		Unclassifiable/Attainment.
Oconee County		Unclassifiable/Attainment.
Orangeburg County		Unclassifiable/Attainment.
Pickens County		Unclassifiable/Attainment.
Richland County		Unclassifiable/Attainment.
Saluda County		Unclassifiable/Attainment.
Spartanburg County		Unclassifiable/Attainment.
Sumter County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Williamsburg County		Unclassifiable/Attainment.
York County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

43. Section 81.342 is amended as follows:

a. By revising the table heading “South Dakota—NO ₂” to read “South Dakota—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “South Dakota—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.342

South Dakota.

* * * * *

South Dakota—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Aurora County		Unclassifiable/Attainment.
Beadle County		Unclassifiable/Attainment.
Bennett County		Unclassifiable/Attainment.
Bon Homme County		Unclassifiable/Attainment.
Brookings County		Unclassifiable/Attainment.
Brown County		Unclassifiable/Attainment.
Brule County		Unclassifiable/Attainment.
Buffalo County		Unclassifiable/Attainment.
Butte County		Unclassifiable/Attainment.
Campbell County		Unclassifiable/Attainment.
Charles Mix County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Codington County		Unclassifiable/Attainment.
Corson County		Unclassifiable/Attainment.
Custer County		Unclassifiable/Attainment.
Davison County		Unclassifiable/Attainment.
Day County		Unclassifiable/Attainment.
Deuel County		Unclassifiable/Attainment.
Dewey County		Unclassifiable/Attainment.
Douglas County		Unclassifiable/Attainment.
Edmunds County		Unclassifiable/Attainment.
Fall River County		Unclassifiable/Attainment.
Faulk County		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Gregory County		Unclassifiable/Attainment.
Haakon County		Unclassifiable/Attainment.
Hamlin County		Unclassifiable/Attainment.
Hand County		Unclassifiable/Attainment.
Hanson County		Unclassifiable/Attainment.
Harding County		Unclassifiable/Attainment.
Hughes County		Unclassifiable/Attainment.
Hutchinson County		Unclassifiable/Attainment.
Hyde County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jerauld County		Unclassifiable/Attainment.
Jones County		Unclassifiable/Attainment.
Kingsbury County		Unclassifiable/Attainment.
Lake County		Unclassifiable/Attainment.
Lawrence County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Lyman County		Unclassifiable/Attainment.
McCook County		Unclassifiable/Attainment.
McPherson County		Unclassifiable/Attainment.
Marshall County		Unclassifiable/Attainment.
Meade County		Unclassifiable/Attainment.
Mellette County		Unclassifiable/Attainment.
Miner County		Unclassifiable/Attainment.
Minnehaha County		Unclassifiable/Attainment.
Moody County		Unclassifiable/Attainment.
Pennington County		Unclassifiable/Attainment.
Perkins County		Unclassifiable/Attainment.
Potter County		Unclassifiable/Attainment.
Roberts County		Unclassifiable/Attainment.
Sanborn County		Unclassifiable/Attainment.
Shannon County		Unclassifiable/Attainment.
Spink County		Unclassifiable/Attainment.
Stanley County		Unclassifiable/Attainment.
Sully County		Unclassifiable/Attainment.
Todd County		Unclassifiable/Attainment.
Tripp County		Unclassifiable/Attainment.
Turner County		Unclassifiable/Attainment.
Union County		Unclassifiable/Attainment.
Walworth County		Unclassifiable/Attainment.
Yankton County		Unclassifiable/Attainment.
Ziebach County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

44. Section 81.343 is amended as follows:

a. By revising the table heading “Tennessee—NO ₂” to read “Tennessee—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Tennessee—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.343

Tennessee.

* * * * *

Tennessee—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Bradley County		Unclassifiable/Attainment.
Davidson County		Unclassifiable/Attainment.
McMinn County		Unclassifiable/Attainment.
Sullivan County		Unclassifiable/Attainment.
Rest of State		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

45. Section 81.344 is amended as follows:

a. By revising the table heading “Texas—NO ₂” to read “Texas—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Texas—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.344

Texas.

* * * * *

Texas—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Anderson County		Unclassifiable/Attainment.
Andrews County		Unclassifiable/Attainment.
Angelina County		Unclassifiable/Attainment.
Aransas County		Unclassifiable/Attainment.
Archer County		Unclassifiable/Attainment.
Armstrong County		Unclassifiable/Attainment.
Atascosa County		Unclassifiable/Attainment.
Austin County		Unclassifiable/Attainment.
Bailey County		Unclassifiable/Attainment.
Bandera County		Unclassifiable/Attainment.
Bastrop County		Unclassifiable/Attainment.
Baylor County		Unclassifiable/Attainment.
Bee County		Unclassifiable/Attainment.
Bell County		Unclassifiable/Attainment.
Bexar County		Unclassifiable/Attainment.
Blanco County		Unclassifiable/Attainment.
Borden County		Unclassifiable/Attainment.
Bosque County		Unclassifiable/Attainment.
Bowie County		Unclassifiable/Attainment.
Brazoria County		Unclassifiable/Attainment.
Brazos County		Unclassifiable/Attainment.
Brewster County		Unclassifiable/Attainment.
Briscoe County		Unclassifiable/Attainment.
Brooks County		Unclassifiable/Attainment.
Brown County		Unclassifiable/Attainment.
Burleson County		Unclassifiable/Attainment.
Burnet County		Unclassifiable/Attainment.
Caldwell County		Unclassifiable/Attainment.
Calhoun County		Unclassifiable/Attainment.
Callahan County		Unclassifiable/Attainment.
Cameron County		Unclassifiable/Attainment.
Camp County		Unclassifiable/Attainment.
Carson County		Unclassifiable/Attainment.
Cass County		Unclassifiable/Attainment.
Castro County		Unclassifiable/Attainment.
Cherokee County		Unclassifiable/Attainment.
Childress County		Unclassifiable/Attainment.
Chambers County		Unclassifiable/Attainment.
Clay County		Unclassifiable/Attainment.
Cochran County		Unclassifiable/Attainment.
Coke County		Unclassifiable/Attainment.
Coleman County		Unclassifiable/Attainment.
Collin County		Unclassifiable/Attainment.
Collingsworth County		Unclassifiable/Attainment.
Colorado County		Unclassifiable/Attainment.
Comal County		Unclassifiable/Attainment.
Comanche County		Unclassifiable/Attainment.
Concho County		Unclassifiable/Attainment.
Cooke County		Unclassifiable/Attainment.
Coryell County		Unclassifiable/Attainment.
Cottle County		Unclassifiable/Attainment.
Crane County		Unclassifiable/Attainment.
Crockett County		Unclassifiable/Attainment.
Crosby County		Unclassifiable/Attainment.
Culberson County		Unclassifiable/Attainment.
Dallam County		Unclassifiable/Attainment.
Dallas County		Unclassifiable/Attainment.
Dawson County		Unclassifiable/Attainment.
Deaf Smith County		Unclassifiable/Attainment.
Delta County		Unclassifiable/Attainment.
Denton County		Unclassifiable/Attainment.
DeWitt County		Unclassifiable/Attainment.
Dickens County		Unclassifiable/Attainment.
Dimmit County		Unclassifiable/Attainment.
Donley County		Unclassifiable/Attainment.
Duval County		Unclassifiable/Attainment.
Eastland County		Unclassifiable/Attainment.
Ector County		Unclassifiable/Attainment.
Edwards County		Unclassifiable/Attainment.
El Paso County		Unclassifiable/Attainment.
Ellis County		Unclassifiable/Attainment.
Erath County		Unclassifiable/Attainment.
Falls County		Unclassifiable/Attainment.
Fannin County		Unclassifiable/Attainment.
Fayette County		Unclassifiable/Attainment.
Fisher County		Unclassifiable/Attainment.
Floyd County		Unclassifiable/Attainment.
Foard County		Unclassifiable/Attainment.
Fort Bend County		Unclassifiable/Attainment.
Franklin County		Unclassifiable/Attainment.
Freestone County		Unclassifiable/Attainment.
Frio County		Unclassifiable/Attainment.
Gaines County		Unclassifiable/Attainment.
Galveston County		Unclassifiable/Attainment.
Garza County		Unclassifiable/Attainment.
Gillespie County		Unclassifiable/Attainment.
Glasscock County		Unclassifiable/Attainment.
Goliad County		Unclassifiable/Attainment.
Gonzales County		Unclassifiable/Attainment.
Gray County		Unclassifiable/Attainment.
Grayson County		Unclassifiable/Attainment.
Gregg County		Unclassifiable/Attainment.
Grimes County		Unclassifiable/Attainment.
Guadalupe County		Unclassifiable/Attainment.
Hale County		Unclassifiable/Attainment.
Hall County		Unclassifiable/Attainment.
Hamilton County		Unclassifiable/Attainment.
Hansford County		Unclassifiable/Attainment.
Hardeman County		Unclassifiable/Attainment.
Hardin County		Unclassifiable/Attainment.
Harris County		Unclassifiable/Attainment.
Harrison County		Unclassifiable/Attainment.
Hartley County		Unclassifiable/Attainment.
Haskell County		Unclassifiable/Attainment.
Hays County		Unclassifiable/Attainment.
Hemphill County		Unclassifiable/Attainment.
Henderson County		Unclassifiable/Attainment.
Hidalgo County		Unclassifiable/Attainment.
Hill County		Unclassifiable/Attainment.
Hockley County		Unclassifiable/Attainment.
Hood County		Unclassifiable/Attainment.
Hopkins County		Unclassifiable/Attainment.
Houston County		Unclassifiable/Attainment.
Howard County		Unclassifiable/Attainment.
Hudspeth County		Unclassifiable/Attainment.
Hunt County		Unclassifiable/Attainment.
Hutchinson County		Unclassifiable/Attainment.
Irion County		Unclassifiable/Attainment.
Jack County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jasper County		Unclassifiable/Attainment.
Jeff Davis County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Jim Hogg County		Unclassifiable/Attainment.
Jim Wells County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Jones County		Unclassifiable/Attainment.
Karnes County		Unclassifiable/Attainment.
Kaufman County		Unclassifiable/Attainment.
Kendall County		Unclassifiable/Attainment.
Kenedy County		Unclassifiable/Attainment.
Kent County		Unclassifiable/Attainment.
Kerr County		Unclassifiable/Attainment.
Kimble County		Unclassifiable/Attainment.
King County		Unclassifiable/Attainment.
Kinney County		Unclassifiable/Attainment.
Kleberg County		Unclassifiable/Attainment.
Knox County		Unclassifiable/Attainment.
La Salle County		Unclassifiable/Attainment.
Lamar County		Unclassifiable/Attainment.
Lamb County		Unclassifiable/Attainment.
Lampasas County		Unclassifiable/Attainment.
Lavaca County		Unclassifiable/Attainment.
Lee County		Unclassifiable/Attainment.
Leon County		Unclassifiable/Attainment.
Liberty County		Unclassifiable/Attainment.
Limestone County		Unclassifiable/Attainment.
Lipscomb County		Unclassifiable/Attainment.
Live Oak County		Unclassifiable/Attainment.
Llano County		Unclassifiable/Attainment.
Loving County		Unclassifiable/Attainment.
Lubbock County		Unclassifiable/Attainment.
Lynn County		Unclassifiable/Attainment.
McCulloch County		Unclassifiable/Attainment.
McLennan County		Unclassifiable/Attainment.
McMullen County		Unclassifiable/Attainment.
Madison County		Unclassifiable/Attainment.
Marion County		Unclassifiable/Attainment.
Martin County		Unclassifiable/Attainment.
Mason County		Unclassifiable/Attainment.
Matagorda County		Unclassifiable/Attainment.
Maverick County		Unclassifiable/Attainment.
Medina County		Unclassifiable/Attainment.
Menard County		Unclassifiable/Attainment.
Midland County		Unclassifiable/Attainment.
Milam County		Unclassifiable/Attainment.
Mills County		Unclassifiable/Attainment.
Mitchell County		Unclassifiable/Attainment.
Montague County		Unclassifiable/Attainment.
Montgomery County		Unclassifiable/Attainment.
Moore County		Unclassifiable/Attainment.
Morris County		Unclassifiable/Attainment.
Motley County		Unclassifiable/Attainment.
Nacogdoches County		Unclassifiable/Attainment.
Navarro County		Unclassifiable/Attainment.
Newton County		Unclassifiable/Attainment.
Nolan County		Unclassifiable/Attainment.
Nueces County		Unclassifiable/Attainment.
Ochiltree County		Unclassifiable/Attainment.
Oldham County		Unclassifiable/Attainment.
Orange County		Unclassifiable/Attainment.
Palo Pinto County		Unclassifiable/Attainment.
Panola County		Unclassifiable/Attainment.
Parker County		Unclassifiable/Attainment.
Parmer County		Unclassifiable/Attainment.
Pecos County		Unclassifiable/Attainment.
Polk County		Unclassifiable/Attainment.
Potter County		Unclassifiable/Attainment.
Presidio County		Unclassifiable/Attainment.
Rains County		Unclassifiable/Attainment.
Randall County		Unclassifiable/Attainment.
Reagan County		Unclassifiable/Attainment.
Real County		Unclassifiable/Attainment.
Red River County		Unclassifiable/Attainment.
Reeves County		Unclassifiable/Attainment.
Refugio County		Unclassifiable/Attainment.
Roberts County		Unclassifiable/Attainment.
Robertson County		Unclassifiable/Attainment.
Rockwall County		Unclassifiable/Attainment.
Runnels County		Unclassifiable/Attainment.
Rusk County		Unclassifiable/Attainment.
Sabine County		Unclassifiable/Attainment.
San Augustine County		Unclassifiable/Attainment.
San Jacinto County		Unclassifiable/Attainment.
San Patricio County		Unclassifiable/Attainment.
San Saba County		Unclassifiable/Attainment.
Schleicher County		Unclassifiable/Attainment.
Scurry County		Unclassifiable/Attainment.
Shackelford County		Unclassifiable/Attainment.
Shelby County		Unclassifiable/Attainment.
Sherman County		Unclassifiable/Attainment.
Smith County		Unclassifiable/Attainment.
Somervell County		Unclassifiable/Attainment.
Starr County		Unclassifiable/Attainment.
Stephens County		Unclassifiable/Attainment.
Sterling County		Unclassifiable/Attainment.
Stonewall County		Unclassifiable/Attainment.
Sutton County		Unclassifiable/Attainment.
Swisher County		Unclassifiable/Attainment.
Tarrant County		Unclassifiable/Attainment.
Taylor County		Unclassifiable/Attainment.
Terrell County		Unclassifiable/Attainment.
Terry County		Unclassifiable/Attainment.
Throckmorton County		Unclassifiable/Attainment.
Titus County		Unclassifiable/Attainment.
Tom Green County		Unclassifiable/Attainment.
Travis County		Unclassifiable/Attainment.
Trinity County		Unclassifiable/Attainment.
Tyler County		Unclassifiable/Attainment.
Upshur County		Unclassifiable/Attainment.
Upton County		Unclassifiable/Attainment.
Uvalde County		Unclassifiable/Attainment.
Val Verde County		Unclassifiable/Attainment.
Van Zandt County		Unclassifiable/Attainment.
Victoria County		Unclassifiable/Attainment.
Walker County		Unclassifiable/Attainment.
Waller County		Unclassifiable/Attainment.
Ward County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Webb County		Unclassifiable/Attainment.
Wharton County		Unclassifiable/Attainment.
Wheeler County		Unclassifiable/Attainment.
Wichita County		Unclassifiable/Attainment.
Wilbarger County		Unclassifiable/Attainment.
Willacy County		Unclassifiable/Attainment.
Williamson County		Unclassifiable/Attainment.
Wilson County		Unclassifiable/Attainment.
Winkler County		Unclassifiable/Attainment.
Wise County		Unclassifiable/Attainment.
Wood County		Unclassifiable/Attainment.
Yoakum County		Unclassifiable/Attainment.
Young County		Unclassifiable/Attainment.
Zapata County		Unclassifiable/Attainment.
Zavala County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

46. Section 81.345 is amended as follows:

a. By revising the table heading “Utah—NO ₂” to read “Utah—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Utah—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.345

Utah.

* * * * *

Utah—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Cache County		Unclassifiable/Attainment.
Davis County		Unclassifiable/Attainment.
Salt Lake County		Unclassifiable/Attainment.
Utah County		Unclassifiable/Attainment.
Weber County		Unclassifiable/Attainment.
Rest of State		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

47. Section 81.346 is amended as follows:

a. By revising the table heading “Vermont—NO ₂” to read “Vermont—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Vermont—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.346

Vermont.

* * * * *

Vermont—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Vermont		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

48. Section 81.347 is amended as follows:

a. By revising the table heading “Virginia—NO ₂” to read “Virginia—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Virginia—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.347

Virginia.

* * * * *

Virginia—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Virginia		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

49. Section 81.348 is amended as follows:

a. By revising the table heading “Washington—NO ₂” to read “Washington—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Washington—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.348

Washington.

* * * * *

Washington—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Washington		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

50. Section 81.349 is amended as follows:

a. By revising the table heading “West Virginia—NO ₂” to read “West Virginia—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “West Virginia—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.349

West Virginia.

* * * * *

West Virginia—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of West Virginia		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

51. Section 81.350 is amended as follows:

a. By revising the table heading “Wisconsin—NO ₂” to read “Wisconsin—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Wisconsin—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.350

Wisconsin.

* * * * *

Wisconsin—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adams County		Unclassifiable/Attainment.
Ashland County		Unclassifiable/Attainment.
Barron County		Unclassifiable/Attainment.
Bayfield County		Unclassifiable/Attainment.
Brown County		Unclassifiable/Attainment.
Buffalo County		Unclassifiable/Attainment.
Burnett County		Unclassifiable/Attainment.
Calumet County		Unclassifiable/Attainment.
Chippewa County		Unclassifiable/Attainment.
Clark County		Unclassifiable/Attainment.
Columbia County		Unclassifiable/Attainment.
Crawford County		Unclassifiable/Attainment.
Dane County		Unclassifiable/Attainment.
Dodge County		Unclassifiable/Attainment.
Door County		Unclassifiable/Attainment.
Douglas County		Unclassifiable/Attainment.
Dunn County		Unclassifiable/Attainment.
Eau Claire County		Unclassifiable/Attainment.
Florence County		Unclassifiable/Attainment.
Fond du Lac County		Unclassifiable/Attainment.
Forest County		Unclassifiable/Attainment.
Grant County		Unclassifiable/Attainment.
Green County		Unclassifiable/Attainment.
Green Lake County		Unclassifiable/Attainment.
Iowa County		Unclassifiable/Attainment.
Iron County		Unclassifiable/Attainment.
Jackson County		Unclassifiable/Attainment.
Jefferson County		Unclassifiable/Attainment.
Juneau County		Unclassifiable/Attainment.
Kenosha County		Unclassifiable/Attainment.
Kewaunee County		Unclassifiable/Attainment.
La Crosse County		Unclassifiable/Attainment.
Lafayette County		Unclassifiable/Attainment.
Langlade County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Manitowoc County		Unclassifiable/Attainment.
Marathon County		Unclassifiable/Attainment.
Marinette County		Unclassifiable/Attainment.
Marquette County		Unclassifiable/Attainment.
Menominee County		Unclassifiable/Attainment.
Milwaukee County		Unclassifiable/Attainment.
Monroe County		Unclassifiable/Attainment.
Oconto County		Unclassifiable/Attainment.
Oneida County		Unclassifiable/Attainment.
Outagamie County		Unclassifiable/Attainment.
Ozaukee County		Unclassifiable/Attainment.
Pepin County		Unclassifiable/Attainment.
Pierce County		Unclassifiable/Attainment.
Polk County		Unclassifiable/Attainment.
Portage County		Unclassifiable/Attainment.
Price County		Unclassifiable/Attainment.
Racine County		Unclassifiable/Attainment.
Richland County		Unclassifiable/Attainment.
Rock County		Unclassifiable/Attainment.
Rusk County		Unclassifiable/Attainment.
St. Croix County		Unclassifiable/Attainment.
Sauk County		Unclassifiable/Attainment.
Sawyer County		Unclassifiable/Attainment.
Shawano County		Unclassifiable/Attainment.
Sheboygan County		Unclassifiable/Attainment.
Taylor County		Unclassifiable/Attainment.
Trempealeau County		Unclassifiable/Attainment.
Vernon County		Unclassifiable/Attainment.
Vilas County		Unclassifiable/Attainment.
Walworth County		Unclassifiable/Attainment.
Washburn County		Unclassifiable/Attainment.
Washington County		Unclassifiable/Attainment.
Waukesha County		Unclassifiable/Attainment.
Waupaca County		Unclassifiable/Attainment.
Waushara County		Unclassifiable/Attainment.
Winnebago County		Unclassifiable/Attainment.
Wood County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

52. Section 81.351 is amended as follows:

a. By revising the table heading “Wyoming—NO ₂” to read “Wyoming—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Wyoming—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.351

Wyoming.

* * * * *

Wyoming—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Albany County		Unclassifiable/Attainment.
Big Horn County		Unclassifiable/Attainment.
Campbell County		Unclassifiable/Attainment.
Carbon County		Unclassifiable/Attainment.
Converse County		Unclassifiable/Attainment.
Crook County		Unclassifiable/Attainment.
Fremont County		Unclassifiable/Attainment.
Goshen County		Unclassifiable/Attainment.
Hot Springs County		Unclassifiable/Attainment.
Johnson County		Unclassifiable/Attainment.
Laramie County		Unclassifiable/Attainment.
Lincoln County		Unclassifiable/Attainment.
Natrona County		Unclassifiable/Attainment.
Niobrara County		Unclassifiable/Attainment.
Park County		Unclassifiable/Attainment.
Platte County		Unclassifiable/Attainment.
Sheridan County		Unclassifiable/Attainment.
Sublette County		Unclassifiable/Attainment.
Sweetwater County		Unclassifiable/Attainment.
Teton County		Unclassifiable/Attainment.
Uinta County		Unclassifiable/Attainment.
Washakie County		Unclassifiable/Attainment.
Weston County		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

53. Section 81.352 is amended as follows:

a. By revising the table heading “American Samoa—NO ₂” to read “American Samoa—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “American Samoa—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.352

American Samoa.

* * * * *

American Samoa—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of American Samoa		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

54. Section 81.353 is amended as follows:

a. By revising the table heading “Guam—NO ₂” to read “Guam—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Guam—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.353

Guam.

* * * * *

Guam—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Guam		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

55. Section 81.354 is amended as follows:

a. By revising the table heading “Northern Mariana Islands—NO ₂” to read “Northern Mariana Islands—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Northern Mariana Islands—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.354

Northern Mariana Islands.

* * * * *

Northern Mariana Islands—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Northern Mariana Islands		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

56. Section 81.355 is amended as follows:

a. By revising the table heading “Puerto Rico—NO ₂” to read “Puerto Rico—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Puerto Rico—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.355

Puerto Rico.

* * * * *

Puerto Rico—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
Adjuntas Municipio		Unclassifiable/Attainment.
Aguada Municipio		Unclassifiable/Attainment.
Aguadilla Municipio		Unclassifiable/Attainment.
Aguas Buenas Municipio		Unclassifiable/Attainment.
Aibonito Municipio		Unclassifiable/Attainment.
Añasco Municipio		Unclassifiable/Attainment.
Arecibo Municipio		Unclassifiable/Attainment.
Arroyo Municipio		Unclassifiable/Attainment.
Barceloneta Municipio		Unclassifiable/Attainment.
Barranquitas Municipio		Unclassifiable/Attainment.
Bayamón County		Unclassifiable/Attainment.
Cabo Rojo Municipio		Unclassifiable/Attainment.
Caguas Municipio		Unclassifiable/Attainment.
Camuy Municipio		Unclassifiable/Attainment.
Canóvanas Municipio		Unclassifiable/Attainment.
Carolina Municipio		Unclassifiable/Attainment.
Cataño County		Unclassifiable/Attainment.
Cayey Municipio		Unclassifiable/Attainment.
Ceiba Municipio		Unclassifiable/Attainment.
Ciales Municipio		Unclassifiable/Attainment.
Cidra Municipio		Unclassifiable/Attainment.
Coamo Municipio		Unclassifiable/Attainment.
Comerío Municipio		Unclassifiable/Attainment.
Corozal Municipio		Unclassifiable/Attainment.
Culebra Municipio		Unclassifiable/Attainment.
Dorado Municipio		Unclassifiable/Attainment.
Fajardo Municipio		Unclassifiable/Attainment.
Florida Municipio		Unclassifiable/Attainment.
Guánica Municipio		Unclassifiable/Attainment.
Guayama Municipio		Unclassifiable/Attainment.
Guayanilla Municipio		Unclassifiable/Attainment.
Guaynabo County		Unclassifiable/Attainment.
Gurabo Municipio		Unclassifiable/Attainment.
Hatillo Municipio		Unclassifiable/Attainment.
Hormigueros Municipio		Unclassifiable/Attainment.
Humacao Municipio		Unclassifiable/Attainment.
Isabela Municipio		Unclassifiable/Attainment.
Jayuya Municipio		Unclassifiable/Attainment.
Juana Díaz Municipio		Unclassifiable/Attainment.
Juncos Municipio		Unclassifiable/Attainment.
Lajas Municipio		Unclassifiable/Attainment.
Lares Municipio		Unclassifiable/Attainment.
Las Marías Municipio		Unclassifiable/Attainment.
Las Piedras Municipio		Unclassifiable/Attainment.
Loíza Municipio		Unclassifiable/Attainment.
Luquillo Municipio		Unclassifiable/Attainment.
Manatí Municipio		Unclassifiable/Attainment.
Maricao Municipio		Unclassifiable/Attainment.
Maunabo Municipio		Unclassifiable/Attainment.
Mayagnez Municipio		Unclassifiable/Attainment.
Moca Municipio		Unclassifiable/Attainment.
Morovis Municipio		Unclassifiable/Attainment.
Naguabo Municipio		Unclassifiable/Attainment.
Naranjito Municipio		Unclassifiable/Attainment.
Orocovis Municipio		Unclassifiable/Attainment.
Patillas Municipio		Unclassifiable/Attainment.
Peñuelas Municipio		Unclassifiable/Attainment.
Ponce Municipio		Unclassifiable/Attainment.
Quebradillas Municipio		Unclassifiable/Attainment.
Rincón Municipio		Unclassifiable/Attainment.
Río Grande Municipio		Unclassifiable/Attainment.
Sabana Grande Municipio		Unclassifiable/Attainment.
Salinas Municipio		Unclassifiable/Attainment.
San Germán Municipio		Unclassifiable/Attainment.
San Juan Municipio		Unclassifiable/Attainment.
San Lorenzo Municipio		Unclassifiable/Attainment.
San Sebastián Municipio		Unclassifiable/Attainment.
Santa Isabel Municipio		Unclassifiable/Attainment.
Toa Alta Municipio		Unclassifiable/Attainment.
Toa Baja County		Unclassifiable/Attainment.
Trujillo Alto Municipio		Unclassifiable/Attainment.
Utuado Municipio		Unclassifiable/Attainment.
Vega Alta Municipio		Unclassifiable/Attainment.
Vega Baja Municipio		Unclassifiable/Attainment.
Vieques Municipio		Unclassifiable/Attainment.
Villalba Municipio		Unclassifiable/Attainment.
Yabucoa Municipio		Unclassifiable/Attainment.
Yauco Municipio		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

57. Section 81.356 is amended as follows:

a. By revising the table heading “Virgin Islands—NO ₂” to read “Virgin Islands—NO₂ (1971 Annual Standard).”

b. By adding a table entitled “Virgin Islands—NO ₂ (2010 1-Hour Standard)” in alphabetical order to read as follows:

§ 81.356

Virgin Islands.

* * * * *

Virgin Islands—NO₂ (2010 1-Hour Standard)

Designated area	Designation a
	Date 1	Type
State of Virgin Islands		Unclassifiable/Attainment.
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after October 31, 2011, unless otherwise noted.

Footnotes

1.  This view was confirmed in Catawba County v. EPA, 571 F.3d 20 (DC Cir. 2009).

2.  The concept of “baseline areas” and their relationship to the area designations is described in 40 CFR 81.300(b). The definition of baseline area appears in PSD regulations at 40 CFR 52.21(b)(15)(i).