Designation of Areas for Air Quality Planning Purposes; California; San Joaquin Valley; Reclassification as Serious Nonattainment for the 1997 PM2.5

AGENCY:

Environmental Protection Agency (EPA).

ACTION:

Final rule.

SUMMARY:

The Environmental Protection Agency (EPA) is taking final action to reclassify the San Joaquin Valley (SJV) Moderate nonattainment area, including areas of Indian country within it, as a Serious nonattainment area for the 1997 PM_2.5 national ambient air quality standards (NAAQS) based on EPA's determination that the area cannot practicably attain these NAAQS by the applicable attainment date of April 5, 2015 and in response to a request from the SJV Air Pollution Control District that we reclassify the area. As a consequence of this reclassification, California must submit a Serious area plan including a demonstration that the plan provides for attainment of the 1997 annual and 24-hour PM_2.5 standards in the SJV area by the applicable attainment date, which is no later than December 31, 2015, or by the most expeditious alternative date practicable, in accordance with the requirements of part D of title I of the Clean Air Act.

DATES:

This rule is effective on May 7, 2015.

ADDRESSES:

The index to the docket (docket number EPA-R09-OAR-2014-0813) for this action is available electronically on the www.regulations.gov Web site and in hard copy at EPA Region 9, 75 Hawthorne Street, San Francisco, California, 94105. While all documents in the docket are listed in the index, some information may be publicly available for viewing only at the hard copy location (e.g., copyrighted material, voluminous records, large maps), and some may not be publicly available at either location (e.g., CBI). To inspect the docket materials in person, please schedule an appointment during normal business hours with the contact listed in the FOR FURTHER INFORMATION CONTACT section below.

FOR FURTHER INFORMATION CONTACT:

Anita Lee, Air Planning Office (AIR-2), U.S. Environmental Protection Agency, Region 9, (415) 972-3958, lee.anita@epa.gov.

SUPPLEMENTARY INFORMATION:

Throughout this document, “we,” “us” and “our” refer to EPA.

Table of Contents

I. Proposed Action

II. Public Comments and EPA Responses

III. Final Action

A. Reclassification as Serious Nonattainment and Applicable Attainment Dates

B. Reclassification of Areas of Indian Country

C. PM_2.5 Serious Area SIP Requirements

IV. Statutory and Executive Order Reviews

I. Proposed Action

On January 12, 2015 (80 FR 1482), EPA proposed to reclassify the SJV nonattainment area, including areas of Indian country within it, from Moderate nonattainment to Serious nonattainment for the 1997 annual and 24-hour PM_2.5 standards based on EPA's determination that the area cannot practicably attain these NAAQS by the applicable attainment date of April 5, 2015. Under section 188(b)(1) of the CAA, prior to an area's attainment date, EPA has discretionary authority to reclassify as a Serious nonattainment area “any area that the Administrator determines cannot practicably attain” the PM_2.5 NAAQS by the applicable Moderate area attainment date. On September 25, 2014, the District requested that EPA reclassify the SJV nonattainment area as Serious nonattainment for the 1997 PM_2.5 standards. This request included a demonstration that the SJV area cannot practicably attain the 1997 annual PM_2.5 standard by the April 5, 2015 attainment date. EPA's proposed reclassification of the SJV area was based upon our evaluation of ambient air quality data for the 2003-2014 period indicating that it is not practicable for certain monitoring sites within the SJV area to show PM_2.5 design values at or below the level of the 1997 PM_2.5 NAAQS by April 5, 2015.

In our proposed rule, EPA identified the additional SIP revisions that California would, upon reclassification, have to submit to satisfy the statutory requirements that apply to Serious areas, including the requirements of subpart 4 of part D, title I of the Act. EPA explained that under section 189(b)(2) of the Act, the State must submit the required provisions to implement best available control measures (BACM), including best available control technology (BACT), no later than 18 months after reclassification and must submit the required attainment demonstration no later than 4 years after reclassification. Given the December 31, 2015, Serious area attainment date applicable to this area under CAA section 188(c)(2), however, we noted that we expect the State to adopt and submit a Serious area plan for these NAAQS well before the statutory SIP submittal deadlines in CAA section 189(b)(2).

With respect to the nonattainment new source review (NNSR) program revisions to establish appropriate “major stationary source” thresholds for direct PM_2.5 and PM_2.5 precursors in accordance with CAA section 189(b)(3), EPA proposed to require the State to submit these NNSR SIP revisions no later than 12 months after the effective date of final reclassification. EPA requested comment on this proposed 12-month timeframe but also noted that if California intended to seek an extension of the Serious area attainment date, the State would need to submit a request that satisfies the requirements of CAA section 188(e), including the required NNSR SIP revisions, in time for EPA to approve such an extension prior to the December 31, 2015 Serious area attainment date.

II. Public Comments and EPA Responses

EPA received one comment letter on our proposed action. The comment letter was submitted by the San Joaquin Valley Air Pollution Control District (“SJVAPCD” or “District”) on February 11, 2015, prior to the close of the comment period on our proposal. We summarize the District's comments and provide our responses below.

Comment: The SJVAPCD expresses support for EPA's proposed 12-month timeframe for California's submission of the required NNSR SIP revisions but objects to EPA's statement indicating that, to obtain an extension of the attainment date under CAA section 188(e), the state must submit these NNSR revisions “in time for EPA to approve such an extension prior to the December 31, 2015 Serious area attainment date.” The District asserts that EPA “provides no valid justification for this requirement” and that section 188(e) of the Act contains “no mention of NSR, either directly or by implication, that would lead one to believe that the updated NSR rule is required prior to approval of the attainment deadline extension.” The District contends that delays in EPA's regulatory actions related to implementation of the 1997 PM_2.5 standards justify a different schedule for this submission.

In sum, the District asserts that EPA is asking the District to begin an expedited process to adopt a serious area NSR rule before the area is reclassified as a Serious area and without implementation rules or guidance. The SJVAPCD requests that EPA decide in the final rule to require the District to submit a revised NNSR rule within 12 months after EPA's final reclassification action and also to decide that “such an NSR rule adoption deadline does not interfere with EPA's ability to approve an attainment deadline extension under 188(e).”

Response: As a preliminary matter, EPA notes that nothing in the CAA requires the Agency to promulgate any implementation rules or guidance with respect to implementation of the 1997 PM_2.5 NAAQS. The statutory provisions of the 1990 CAA Amendments addressing implementation of the PM₁₀ NAAQS and EPA guidance for implementation of the PM₁₀ NAAQS dating back to 1992 and 1994 are still applicable and relevant to this action. Thus, the absence of revised implementation rules or additional guidance is not itself a basis for setting a particular schedule for a state to make a statutorily required SIP submission.

Upon further consideration of this question, however, EPA has determined that the specific factual circumstances in this instance justify the 12 months sought by SJVAPCD for the submission of the NNSR revisions. Accordingly, we are finalizing our proposal to require that California adopt and submit NNSR SIP revisions to implement the subpart 4 requirements for Serious PM_2.5 nonattainment areas in the SJV area no later than 12 months after the effective date of this reclassification. In light of the unique circumstances in the SJV, as discussed below, we do not intend at this time to treat these NNSR SIP revisions as a precondition to a request for an extension of the Serious area attainment date under CAA section 188(e).

Under section 188(e) of the Act, a state may apply to EPA for a single extension of the Serious area attainment date by up to 5 years, which EPA may grant if the State satisfies certain conditions. Before EPA may extend the attainment date for a Serious area under section 188(e), the state must: (1) Apply for an extension of the attainment date beyond the statutory attainment date; (2) demonstrate that attainment by the statutory attainment date is impracticable; (3) have complied with all requirements and commitments pertaining to the area in the implementation plan; (4) demonstrate to the satisfaction of the Administrator that the plan for the area includes the most stringent measures that are included in the implementation plan of any State or are achieved in practice in any State, and can feasibly be implemented in the area; and (5) submit a demonstration of attainment by the most expeditious alternative date practicable. Section 188(e) does not explicitly require the state to have a fully approved NNSR program that meets the Act's Serious area requirements before it may qualify for an extension of the Serious area attainment date.

As a result of today's reclassification of the SJV as Serious nonattainment for the 1997 PM_2.5 NAAQS, California is required to submit NNSR SIP revisions consistent with the requirements of subpart 4, including revisions to establish appropriate “major stationary source” thresholds for direct PM_2.5 and PM_2.5 precursors in accordance with CAA section 189(b)(3). Given the timing of this reclassification, just months before the latest permissible Serious area attainment date (December 31, 2015), and the unusually short timeframe for the State's development and submission of a plan to provide for attainment of the 1997 PM_2.5 NAAQS by this date, we find it reasonable to provide the State a small amount of additional time to adopt and submit the Serious area NNSR SIP revisions required under subpart 4. Accordingly, under these particular circumstances, we do not expect the State to submit the required NNSR SIP revisions simultaneously with the Serious area attainment plan or with a request for an extension of the Serious area attainment date under CAA section 188(e). Instead, this final action requires the state to submit the NNSR SIP revisions required under subpart 4 no later than 12 months after the effective date of the reclassification. The State will need to submit the Serious area attainment plan and the section 188(e) extension request before December 31, 2015 to satisfy the statutory requirements.

EPA has recently issued a new proposed rulemaking to implement the PM_2.5 NAAQS in accordance with the requirements of subparts 1 and 4 of part D, title I of the Act. As part of this proposed rulemaking, the Agency is seeking comment on how to interpret the criteria in section 188(e) for granting state requests for an extension of a Serious area attainment date prospectively. Until the Agency finalizes that proposed rule, EPA encourages the State and District to review the statutory provisions of the CAA applicable to implementation of the PM₁₀ NAAQS, and EPA's prior guidance in the General Preamble and Addendum, as they develop the SIP revisions necessary to satisfy the Serious area requirements that now apply in the SJV PM_2.5 nonattainment area. Until EPA finalizes any new implementation rule for the 1997 PM_2.5 NAAQS, the existing guidance in the General Preamble and Addendum provide the Agency's recommendations for SIP submissions required for the PM_2.5 NAAQS.

III. Final Action

A. Reclassification as Serious Nonattainment and Applicable Attainment Date

In accordance with section 188(b)(1) of the Act, EPA is taking final action to reclassify the SJV area from Moderate to Serious nonattainment for the 1997 annual and 24-hour PM_2.5 standards of 15.0 and 65 μg/m³, respectively, based on EPA's determination that the SJV area cannot practicably attain these standards by the applicable attainment date of April 5, 2015.

Under section 188(c)(2) of the Act, the attainment date for a Serious area “shall be as expeditiously as practicable but no later than the end of the tenth calendar year beginning after the area's designation as nonattainment. . . .” The SJV area was designated nonattainment for the 1997 PM_2.5 standards effective April 5, 2005. Therefore, as a result of our reclassification of the SJV area as a Serious nonattainment area, the latest permissible attainment date under section 188(c)(2) of the Act, for purposes of the 1997 PM_2.5 standards in this area, is December 31, 2015.

B. Reclassification of Areas of Indian Country ¹⁴

Eight Indian tribes are located within the boundaries of the San Joaquin Valley PM_2.5 nonattainment area: The Big Sandy Rancheria of Mono Indians of California, the Cold Springs Rancheria of Mono Indians of California, the North Fork Rancheria of Mono Indians of California, the Picayune Rancheria of Chukchansi Indians of California, the Santa Rosa Rancheria of the Tachi Yokut Tribe, the Table Mountain Rancheria of California, the Tejon Indian Tribe, and the Tule River Indian Tribe of the Tule River Reservation.

We have considered the relevance of our final action to reclassify the SJV nonattainment area as Serious for the 1997 PM_2.5 standards to each tribe located within the SJV area. As discussed in more detail in our proposed rule, we believe that the same facts and circumstances that support the reclassification for the non-Indian country lands also support reclassification for Indian country located within the SJV nonattainment area. In this final action, EPA is therefore exercising our authority under CAA section 188(b)(1) to reclassify areas of Indian country geographically located in the SJV nonattainment area. Section 188(b)(1) broadly authorizes EPA to reclassify a nonattainment area—including any area of Indian country located within such area—that EPA determines cannot practicably attain the relevant standard by the applicable attainment date.

The effect of reclassification would be to lower the applicable “major stationary source” emissions thresholds for direct PM_2.5 and PM_2.5 precursors for purposes of the NNSR program and the Title V operating permit program (CAA sections 189(b)(3) and 501(2)(B)) thus subjecting more new or modified stationary sources to these requirements. The reclassification may also lower the de minimis threshold under the CAA's General Conformity requirements (40 CFR part 93, subpart B) from 100 tpy to 70 tpy. Under the General Conformity requirements, Federal agencies bear the responsibility of determining conformity of actions in nonattainment and maintenance areas that require Federal permits, approvals, or funding. Such permits, approvals or funding by Federal agencies for projects in these areas of Indian country may be more difficult to obtain because of the lower de minimis thresholds.

Given the potential implications of the reclassification, EPA contacted tribal officials to invite government-to-government consultation on this rulemaking effort. EPA did not receive comments on our proposed rule from any tribe. On February 17, 2015, after the close of the comment period on our proposal, EPA received a letter dated January 30, 2015, from the Tejon Tribe expressing interest in developing a better understanding of the reclassification and implications for air quality. EPA invited the Tejon Tribe to participate in a conference call during the week of February 23, 2015, to discuss the Tribe's questions. We continue to invite Indian tribes in the SJV to contact EPA with any questions about the effects of this reclassification on tribal interests and air quality. We note that although eligible tribes may opt to seek EPA approval of relevant tribal programs under the CAA, none of the affected tribes will be required to submit an implementation plan to address this reclassification.

C. PM _2.5 Serious Area SIP Requirements

As a consequence of our reclassification of the SJV area as a Serious nonattainment area for the 1997 PM_2.5 NAAQS, California is required to submit additional SIP revisions to satisfy the statutory requirements that apply to Serious areas, including the requirements of subpart 4 of part D, title I of the Act.

The Serious area SIP elements that California must submit are as follows:

1. Provisions to assure that the best available control measures (BACM), including best available control technology (BACT) for stationary sources, for the control of direct PM_2.5 and PM_2.5 precursors shall be implemented no later than 4 years after the area is reclassified (CAA section 189(b)(1)(B));

2. A demonstration (including air quality modeling) that the plan provides for attainment as expeditiously as practicable but no later than December 31, 2015, or where the State is seeking an extension of the attainment date under section 188(e), a demonstration that attainment by December 31, 2015 is impracticable and that the plan provides for attainment by the most expeditious alternative date practicable (CAA sections 188(c)(2) and 189(b)(1)(A));

3. Plan provisions that require reasonable further progress (RFP) (CAA section 172(c)(2));

4. Quantitative milestones which are to be achieved every 3 years until the area is redesignated attainment and which demonstrate RFP toward attainment by the applicable date (CAA section 189(c));

5. Provisions to assure that control requirements applicable to major stationary sources of PM_2.5 also apply to major stationary sources of PM_2.5 precursors, except where the State demonstrates to EPA's satisfaction that such sources do not contribute significantly to PM_2.5 levels that exceed the standard in the area (CAA section 189(e));

6. A comprehensive, accurate, current inventory of actual emissions from all sources of PM_2.5 and PM_2.5 precursors in the area (CAA section 172(c)(3));

7. Contingency measures to be implemented if the area fails to meet RFP or to attain by the applicable attainment date (CAA section 172(c)(9)); and

8. A revision to the NNSR program to establish appropriate “major stationary source” thresholds for direct PM_2.5 and PM_2.5 precursors (CAA section 189(b)(3)).

Section 189(b)(2) states, in relevant part, that the State must submit the required BACM provisions “no later than 18 months after reclassification of the area as a Serious Area” and must submit the required attainment demonstration “no later than 4 years after reclassification of the area to Serious.” Thus, the Act provides the State with up to 18 months after the effective date of this reclassification (i.e., until late 2016) to submit a BACM demonstration and up to 4 years after this date (i.e., until early 2019) to submit a Serious area attainment demonstration. Given the December 31, 2015 Serious area attainment date for the 1997 PM_2.5 standards in this area under CAA section 188(c)(2), however, EPA expects the State to adopt and submit a Serious area plan for the 1997 PM_2.5 standards well before the statutory SIP submittal deadlines in section 189(b)(2).

Additionally, in light of the available ambient air quality data and the short amount of time available before the December 31, 2015 attainment date under CAA section 188(c)(2), EPA anticipates that California may choose to submit a request for an extension of the Serious area attainment date pursuant to section 188(e) simultaneously with its submittal of a Serious area plan for the area. If California fails to submit a request for an extension of the Serious area attainment date that satisfies the requirements of section 188(e) and the SJV area fails to attain the 1997 PM_2.5 standards by December 31, 2015, under CAA section 189(d) the State would be required to submit, within 12 months after December 31, 2015, plan revisions which provide for attainment of the PM_2.5 standards and, from the date of such submission until attainment, for an annual reduction in emissions within the SJV area of not less than 5 percent of the amount of such emissions as reported in the most recent inventory prepared for the area (hereafter “section 189(d) plan”). If, however, California submits and EPA approves a section 188(e) request for an extension of the Serious area attainment date prior to the December 31, 2015 attainment date for the SJV area, the requirement to submit a section 189(d) plan would not apply unless and until the SJV area fails to attain the 1997 PM_2.5 standards by the extended attainment date approved by EPA under section 188(e).

Given the short amount of time available for California's development of these SIP submittals, EPA anticipates that the Serious area attainment demonstration for the SJV area may rely to some extent on existing photochemical modeling analyses developed for previous PM_2.5 plan submittals. EPA commits to work with the District and the State as they develop the necessary technical support for the Serious area plan and to provide guidance on the requirements that California must meet to qualify for an extension of the Serious area attainment date under CAA section 188(e).

Finally, for the reasons provided in our proposed rule and in our responses to comments above, we are finalizing our proposal to require the State to submit the NNSR SIP revisions required for Serious areas under subpart 4 no later than 12 months after the effective date of this reclassification.

VI. Statutory and Executive Order Reviews

Additional information about these statutes and Executive Orders can be found at http://www2.epa.gov/laws-regulations/laws-and-executive-orders.

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

This action is exempt from review by the Office of Management and Budget (OMB) because it relates to a designation of an area for air quality purposes and will reclassify the SJV from its current air quality designation of Moderate nonattainment to Serious nonattainment for the 1997 PM_2.5 NAAQS.

B. Paperwork Reduction Act (PRA)

This action does not impose an information collection burden under the PRA. This action does not contain any information collection activities.

C. Regulatory Flexibility Act (RFA)

I certify that this action will not have a significant economic impact on a substantial number of small entities under the RFA. This action will not impose any requirements on small entities. The final rule requires the state to adopt and submit SIP revisions to satisfy the statutory requirements that apply to Serious areas, and would not itself directly regulate any small entities (see section III.C of this final rule).

D. Unfunded Mandates Reform Act (UMRA)

This action does not contain any unfunded mandate of $100 million or more and does not significantly or uniquely affect small governments, as described in UMRA (2 U.S.C. 1531-1538). This action itself imposes no enforceable duty on any state, local, or tribal governments, or the private sector. The final action reclassifies the SJV nonattainment area as Serious nonattainment for the 1997 PM_2.5 NAAQS, which triggers existing statutory timeframes for the state to submit SIP revisions. Such a reclassification in and of itself does not impose any federal intergovernmental mandate. The final action does not require any tribes to submit implementation plans.

E. Executive Order 13132: Federalism

This action does not have federalism implications.

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

This action may have tribal implications. However, it will neither impose substantial direct compliance costs on federally recognized tribal governments, nor preempt tribal law. Eight Indian tribes are located within the boundaries of the SJV nonattainment area for the 1997 PM_2.5 NAAQS: The Big Sandy Rancheria of Mono Indians of California, the Cold Springs Rancheria of Mono Indians of California, the North Fork Rancheria of Mono Indians of California, the Picayune Rancheria of Chukchansi Indians of California, the Santa Rosa Rancheria of the Tachi Yokut Tribe, the Table Mountain Rancheria of California, the Tejon Indian Tribe, and the Tule River Indian Tribe of the Tule River Reservation. We note that none of the tribes located in the SJV nonattainment area have requested eligibility to administer programs under the Clean Air Act. This final action affects EPA's implementation of the new source review program because of the lower “major stationary source” threshold triggered by reclassification (CAA 189(b)(3)). The final action may also affect new or modified stationary sources proposed in these areas that require Federal permits, approvals, or funding. Such projects are subject to the requirements of EPA's General Conformity rule, and Federal permits, approvals, or funding for the projects may be more difficult to obtain because of the lower de minimis thresholds triggered by reclassification.

Given these potential implications, consistent with the EPA Policy on Consultation and Coordination with Indian Tribes, EPA contacted tribal officials early in the process of developing this regulation to permit them to have meaningful and timely input into its development. EPA invited tribal officials to consult during the development of the proposed rule and following signature of the proposed rule. As discussed in more detail in our proposed action, we sent letters to leaders of the tribes with areas of Indian country in the SJV nonattainment area inviting government-to-government consultation on the rulemaking effort. On February 17, 2015, EPA received a letter dated January 30, 2015 from the Tejon Tribe expressing an interest in developing a better understanding of, among other things, the effect of the reclassification on air quality. EPA invited the Tejon Tribe to participate in a conference call during the week of February 23, 2015, and EPA staff subsequently had preliminary conversations about this action with the Tribe but has not yet received confirmation of a request to schedule a conference call. No other Indian tribe has expressed an interest in discussing this action with EPA. We continue to invite Indian tribes in the SJV to contact EPA with any questions about the effects of this reclassification on tribal interests and air quality.

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

EPA interprets Executive Order 13045 (62 FR 19885, April 23, 1997) as applying only to those regulatory actions that concern environmental health or safety risks that EPA has reason to believe may disproportionately affect children, per the definition of “covered regulatory action” in section 2-202 of the Executive Order. This action is not subject to Executive Order 13045 because it reclassifies the SJV nonattainment area as Serious nonattainment for the 1997 PM_2.5 NAAQS, which triggers additional Serious area planning requirements under the CAA. This action 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 final action is not subject to Executive Order 13211, because it is not a significant regulatory action under Executive Order 12866.

I. National Technology Transfer and Advancement Act

This action is not subject to the requirements of Section 12(d) of the National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 note) because it does not involve technical standards.

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

EPA believes the human health or environmental risk addressed by this action will not have potential disproportionately high and adverse human health or environmental effects on minority, low-income or indigenous populations. This action reclassifies the SJV nonattainment area as Serious nonattainment for the 1997 PM_2.5 NAAQS, which triggers additional Serious area planning requirements under the CAA.

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 United States. 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 United States 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 on May 7, 2015.

L. Petitions for Judicial Review

Under section 307(b)(1) of the Clean Air Act, petitions for judicial review of this action must be filed in the United States Court of Appeals for the appropriate circuit by June 8, 2015. Filing a petition for reconsideration by the Administrator of this final rule does not affect the finality of this rule for the purposes of judicial review nor does it extend the time within which a petition for judicial review may be filed, and shall not postpone the effectiveness of such rule or action. This action may not be challenged later in proceedings to enforce its requirements (see section 307(b)(2)).

List of Subjects

40 CFR Part 52

• Air pollution control
• Incorporation by reference
• Intergovernmental relations
• Particulate matter

40 CFR Part 81

• Environmental protection
• Air pollution control
• Incorporation by reference

Chapter I, title 40 of the Code of Federal Regulations is amended as follows:

PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS

1. The authority citation for Part 52 continues to read as follows:

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

2. Section 52.245 is amended by adding paragraph (c) as follows:

PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES

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

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

4. Section 81.305 is amended as follows:

a. In the table titled “California—1997 Annual PM _2.5 NAAQS [Primary and secondary],” revise the entries under “San Joaquin Valley, CA”; and

b. In the table titled “California—1997 24-Hour PM _2.5 NAAQS [Primary and secondary],” revise the entries under “San Joaquin Valley, CA”.

The revisions read as follows: