40 CFR 81.351 - Wyoming.

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There are 11 Updates appearing in the Federal Register for 40 CFR 81. View below or at eCFR (GPOAccess)
§ 81.351 Wyoming.
Wyoming—SO2
Designated area Does not meet primary standards Does not meet secondary standards Cannot be classified Better than national standards
Entire State X
Wyoming—Carbon Monoxide
Designated Area Designation Classification
Date 1 Type Date 1 Type
1 This date is November 15, 1990, unless otherwise noted.
Statewide Unclassifiable/Attainment
Albany County
Big Horn County
Campbell County
Carbon County
Converse County
Crook County
Fremont County
Goshen County
Hot Springs County
Johnson County
Laramie County
Lincoln County
Natrona County
Niobrara County
Park County
Platte County
Sheridan County
Sublette County
Sweetwater County
Teton County
Uinta County
Washakie County
Weston County
Wyoming—Ozone (1-Hour Standard)2
Designated area Designation Classification
Date 1 Type Date 1 Type
1 This date is October 18, 2000, unless otherwise noted.
2 The 1-hour ozone standard is revoked effective June 15, 2005 for all areas in Wyoming.
Statewide Unclassifiable/Attainment
Albany County
Big Horn County
Campbell County
Carbon County
Converse County
Crook County
Fremont County
Goshen County
Hot Springs County
Johnson County
Laramie County
Lincoln County
Natrona County
Niobrara County
Park County
Platte County
Sheridan County
Sublette County
Sweetwater County
Teton County
Uinta County
Washakie County
Weston County
Wyoming—PM-10
Designated Area Designation Classification
Date Type Date Type
1 Denotes a single area designation for baseline area purposes.
Sheridan County:
City of Sheridan 11/15/90 Nonattainment 11/15/90 Moderate.
Trona Industrial Area 11/15/90 Unclassifiable
Campbell County (part) 11/15/90 Unclassifiable
Converse County (part).
That area bounded by Township 40 through 52 North, and Ranges 69 through 73 West, inclusive of the Sixth Principal Meridian, Campbell and Converse Counties, excluding the areas defined as the Pacific Power and Light Area, the Hampshire Energy Area, and the Kennecott/Puron PSD Baseline Area—Powder River Basin.
Campbell County (part), That areabounded by NW1/4 of Section 27, T50N, R71W, Campbell County, Wyoming—Pacific Power and Light Area 11/15/90 Unclassifiable
Campbell County (part), That area bounded by Section 6 excluding the SW1/4; E1/2Section 7; Section 17 excluding the SW1/4; Section 14 excluding the SE1/4; Sections 2, 3, 4, 5, 8, 9, 10, 11, 15, 16 of T48N, R70W and Section 26 excluding the NE1/4; SW1/4Section 23; Sections 19, 20, 21, 22, 27, 28, 29, 30, 31, 32, 33, 34, 35 of T49N, R70W.—Hampshire Energy Area 11/15/90 Unclassifiable
Campbell County (part), That area described by the W1/2SW1/4Section 18, W1/2NW1/4, NW1/4SW1/4Section 19, T47N, R70W, S1/2Section 13, N1/2, N1/2SW1/4, N1/2SE1/4Section 24, T47N, R71W.—Kennecott/Puron PSD Baseline Area 11/15/90 Unclassifiable
Rest of State1 11/15/90 Unclassifiable
Wyoming—NO2 (1971 Annual Standard)
Designated area Does not meet primary standards Cannot be classified or better than national standards
Entire State X
Wyoming—NO2 (2010 1-Hour Standard)
Designated area Designation a
Date 1 Type
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.
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.
Wyoming—Ozone (8-Hour Standard)
Designated area Designation a Category/classification
Date 1 Type Date 1 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is June 15, 2004, unless otherwise noted.
Statewide Unclassifiable/Attainment
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
Wyoming—PM2.5 (Annual NAAQS)
Designated area Designation a
Date 1 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after January 5, 2005, unless otherwise noted.
Casper, WY:
Natrona County (part) Unclassifiable/Attainment.
The portion within the City of Casper
Cheyenne, WY:
Laramie County (part) Unclassifiable/Attainment.
The portion within the City of Cheyenne
Evanston, WY:
Uinta County (part) Unclassifiable/Attainment.
The portion within the City of Evanston
Gillette, WY:
Campbell County (part) Unclassifiable/Attainment.
The portion within the City of Gillette
Jackson, WY:
Teton County (part) Unclassifiable/Attainment.
The portion within the City of Jackson
Lander, WY:
Fremont County (part) Unclassifiable/Attainment.
The portion within the City of Lander
Laramie, WY:
Albany County (part) Unclassifiable/Attainment.
The portion within the City of Laramie
Riverton, WY:
Fremont County (part) Unclassifiable/Attainment.
The portion within the City of Riverton
Rock Springs, WY:
Sweetwater County (part) Unclassifiable/Attainment.
The portion within the City of Rock Springs
Sheridan, WY:
Sheridan County (part) Unclassifiable/Attainment.
The portion within the City of Sheridan
Rest of State:
Albany County (remainder) 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 (remainder) Unclassifiable/Attainment.
Goshen County Unclassifiable/Attainment.
Hot Springs County Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment.
Laramie County (remainder) Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment.
Natrona County (remainder) Unclassifiable/Attainment.
Niobrara County Unclassifiable/Attainment.
Park County Unclassifiable/Attainment.
Platte County Unclassifiable/Attainment.
Sheridan County (remainder) Unclassifiable/Attainment.
Sublette County Unclassifiable/Attainment.
Sweetwater County Unclassifiable/Attainment.
Teton County (remainder) Unclassifiable/Attainment.
Uinta County (remainder) Unclassifiable/Attainment.
Washakie County Unclassifiable/Attainment.
Weston County Unclassifiable/Attainment.
Wyoming—PM2.5 [24-hour NAAQS]
Designated area Designation for the 1997 NAAQS a Designation for the 2006 NAAQS a
Date 1 Type Date 2 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 This date is 90 days after January 5, 2005, unless otherwise noted.
2 This date is 30 days after November 13, 2009, unless otherwise noted.
Casper, WY:
Natrona County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Casper.
Cheyenne, WY:
Laramie County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Cheyenne.
Evanston, WY:
Uinta County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Evanston.
Gillette, WY:
Campbell County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Gillette.
Jackson, WY:
Teton County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Jackson.
Lander, WY:
Fremont County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Lander.
Laramie, WY:
Albany County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Laramie.
Riverton, WY:
Fremont County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Riverton.
Rock Springs, WY:
Sweetwater County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Rock Springs.
Sheridan, WY:
Sheridan County (part) Unclassifiable/Attainment Unclassifiable/Attainment.
The portion within the City of Sheridan.
Rest of State:
Albany County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Big Horn County Unclassifiable/Attainment Unclassifiable/Attainment.
Campbell County Unclassifiable/Attainment Unclassifiable/Attainment.
Carbon County Unclassifiable/Attainment Unclassifiable/Attainment.
Converse County Unclassifiable/Attainment Unclassifiable/Attainment.
Crook County Unclassifiable/Attainment Unclassifiable/Attainment.
Fremont County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Goshen County Unclassifiable/Attainment Unclassifiable/Attainment.
Hot Springs County Unclassifiable/Attainment Unclassifiable/Attainment.
Johnson County Unclassifiable/Attainment Unclassifiable/Attainment.
Laramie County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Lincoln County Unclassifiable/Attainment Unclassifiable/Attainment.
Natrona County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Niobrara County Unclassifiable/Attainment Unclassifiable/Attainment.
Park County Unclassifiable/Attainment Unclassifiable/Attainment.
Platte County Unclassifiable/Attainment Unclassifiable/Attainment.
Sheridan County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Sublette County Unclassifiable/Attainment Unclassifiable/Attainment.
Sweetwater County Unclassifiable/Attainment Unclassifiable/Attainment.
Teton County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Uinta County (remainder) Unclassifiable/Attainment Unclassifiable/Attainment.
Washakie County Unclassifiable/Attainment Unclassifiable/Attainment.
Weston County Unclassifiable/Attainment Unclassifiable/Attainment.
Wyoming—2008 Lead NAAQS
Designated area Designation for the 2008 NAAQS a
Date 1 Type
a Includes Indian Country located in each county or area, except as otherwise specified.
1 December 31, 2011 unless otherwise noted.
Whole State Unclassifiable/Attainment.
[43 FR 8964, Mar. 3, 1978, as amended at 47 FR 31878, July 23, 1982; 48 FR 54483, Dec. 5, 1983; 56 FR 56853, Nov. 6, 1991; 57 FR 56778, Nov. 30, 1992; 58 FR 4350, Jan. 14, 1993; 60 FR 55798, 55800, Nov. 3, 1995; 61 FR 47060, Sept. 6, 1996; 63 FR 31093, June 5, 1998; 65 FR 45271, July 20, 2000; 69 FR 23948, Apr. 30, 2004; 70 FR 1016, Jan. 5, 2005; 70 FR 44478, Aug. 3, 2005; 74 FR 58778, Nov. 13, 2009; 76 FR 72119, Nov. 22, 2011; 77 FR 9585, Feb. 17, 2012]
§ 81.351, Nt.
Effective Date Note:
At 77 FR 30157, May 21, 2012, § 81.351 was amended by revising the table heading for “Wyoming—Ozone (8-Hour Standard)” to read “Wyoming—1997 8-Hour Ozone NAAQS (Primary and Secondary)”; by adding a new table entitled “Wyoming—2008 8-Hour Ozone NAAQS (Primary and Secondary)” following the newly designated table “Wyoming—1997 8-Hour Ozone NAAQS (Primary and Secondary)”, effective July 20, 2012. For the convenience of the user, the added text is set forth as follows:
§ 81.351 Wyoming.
Wyoming—2008 8-Hour Ozone NAAQS(Primary and secondary)
Designated area Designation Classification
Date 1 Type Date 1 Type
1 This date is July 20, 2012, unless otherwise noted.
2 Excludes Indian country located in each area, unless otherwise noted.
Upper Green River Basin Area, WY: 2 Nonattainment Marginal.
Lincoln County (part)
The area of the county north and east of the boundary defined by a line starting at the point defined by the intersection of the southwest corner Section 30 Range (R) 115 West Township (T) 27N and the northwest corner of Section 31 R 115 West T27N of Sublette County at Sublette County's border with Lincoln County. From this point the boundary moves to the west 500 feet to Aspen Creek. The boundary follows the centerline of Aspen Creek downstream to the confluence of Aspen Creek and Fontenelle Creek (in R116W T26N, Section 1). From this point the boundary moves generally to the south along the centerline of Fontenelle Creek to the confluence of Fontenelle Creek and Roney Creek (in R115W T24N Section 6). From the confluence, the boundary moves generally to the east along the centerline of Fontenelle Creek and into the Fontenelle Reservoir (in R112W T24N Section 6). The boundary moves east southeast along the centerline of the Fontenelle Reservoir and then toward the south along the centerline of the Green River to where the Green River in R111W T24N Section 31 crosses into Sweetwater County.
Sublette County
Sweetwater County (part)
The area of the county west and north of the boundary which begins at the midpoint of the Green River, where the Green River enters Sweetwater County from Lincoln County in R111W T24N Section 31. From this point, the boundary follows the center of the channel of the Green River generally to the south and east to the confluence of the Green River and the Big Sandy River (in R109W T22N Section 28). From this point, the boundary moves generally north and east along the centerline of the Big Sandy River to the confluence of the Big Sandy River with Little Sandy Creek (in R106W T25N Section 33). The boundary continues generally toward the northeast along the centerline of Little Sandy Creek to the confluence of Little Sandy Creek and Pacific Creek (in R106W T25N Section 24). From this point, the boundary moves generally to the east and north along the centerline of Pacific Creek to the confluence of Pacific Creek and Whitehorse Creek (in R103W T26N Section 10). From this point the boundary follows the centerline of Whitehorse Creek generally to the northeast until it reaches the eastern boundary of Section 1 R103W T26N. From the point where Whitehorse Creek crosses the eastern section line of Section 1 R103W T26N, the boundary moves straight north along the section line to the southeast corner of Section 36 R103W T27N in Sublette County where the boundary ends.
Rest of State and Rest of Indian Country Unclassifiable/Attainment

Title 40 published on 2014-07-01

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-12-09; vol. 79 # 236 - Tuesday, December 9, 2014
    1. 79 FR 72981 - Redesignation Request and Maintenance Plan for PM2 . 5; Yuba City-Marysville; California
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      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This final rule is effective on January 8, 2015.
      40 CFR Parts 52 and 81

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.


United States Code
U.S. Code: Title 42 - THE PUBLIC HEALTH AND WELFARE

§ 7401 - Congressional findings and declaration of purpose

§ 7402 - Cooperative activities

§ 7403 - Research, investigation, training, and other activities

§ 7404 - Research relating to fuels and vehicles

§ 7405 - Grants for support of air pollution planning and control programs

§ 7406 - Interstate air quality agencies; program cost limitations

§ 7407 - Air quality control regions

§ 7408 - Air quality criteria and control techniques

§ 7409 - National primary and secondary ambient air quality standards

§ 7410 - State implementation plans for national primary and secondary ambient air quality standards

§ 7411 - Standards of performance for new stationary sources

§ 7412 - Hazardous air pollutants

§ 7413 - Federal enforcement

§ 7414 - Recordkeeping, inspections, monitoring, and entry

§ 7415 - International air pollution

§ 7416 - Retention of State authority

§ 7417 - Advisory committees

§ 7418 - Control of pollution from Federal facilities

§ 7419 - Primary nonferrous smelter orders

§ 7420 - Noncompliance penalty

§ 7421 - Consultation

§ 7422 - Listing of certain unregulated pollutants

§ 7423 - Stack heights

§ 7424 - Assurance of adequacy of State plans

§ 7425 - Measures to prevent economic disruption or unemployment

§ 7426 - Interstate pollution abatement

§ 7427 - Public notification

§ 7428 - State boards

§ 7429 - Solid waste combustion

§ 7430 - Emission factors

§ 7431 - Land use authority

§ 7450 to 7459 - Repealed.

§ 7470 - Congressional declaration of purpose

§ 7471 - Plan requirements

42 U.S. Code § 7450 to 7459 - Repealed.

§ 7472 - Initial classifications

§ 7473 - Increments and ceilings

§ 7474 - Area redesignation

§ 7475 - Preconstruction requirements

§ 7476 - Other pollutants

§ 7477 - Enforcement

§ 7478 - Period before plan approval

§ 7479 - Definitions

§ 7491 - Visibility protection for Federal class I areas

§ 7492 - Visibility

§ 7501 - Definitions

§ 7502 - Nonattainment plan provisions in general

§ 7503 - Permit requirements

§ 7504 - Planning procedures

§ 7505 - Environmental Protection Agency grants

§ 7505a - Maintenance plans

§ 7506 - Limitations on certain Federal assistance

§ 7506a - Interstate transport commissions

§ 7507 - New motor vehicle emission standards in nonattainment areas

§ 7508 - Guidance documents

§ 7509 - Sanctions and consequences of failure to attain

§ 7509a - International border areas

§ 7511 - Classifications and attainment dates

§ 7511a - Plan submissions and requirements

§ 7511b - Federal ozone measures

§ 7511c - Control of interstate ozone air pollution

§ 7511d - Enforcement for Severe and Extreme ozone nonattainment areas for failure to attain

§ 7511e - Transitional areas

§ 7511f - NO

§ 7512 - Classification and attainment dates

§ 7512a - Plan submissions and requirements

§ 7513 - Classifications and attainment dates

§ 7513a - Plan provisions and schedules for plan submissions

§ 7513b - Issuance of RACM and BACM guidance

§ 7514 - Plan submission deadlines

§ 7514a - Attainment dates

§ 7515 - General savings clause

§ 7521 - Emission standards for new motor vehicles or new motor vehicle engines

§ 7522 - Prohibited acts

§ 7523 - Actions to restrain violations

§ 7524 - Civil penalties

§ 7525 - Motor vehicle and motor vehicle engine compliance testing and certification

§ 7541 - Compliance by vehicles and engines in actual use

§ 7542 - Information collection

§ 7543 - State standards

§ 7544 - State grants

§ 7545 - Regulation of fuels

§ 7546 - Renewable fuel

§ 7547 - Nonroad engines and vehicles

§ 7548 - Study of particulate emissions from motor vehicles

§ 7549 - High altitude performance adjustments

§ 7550 - Definitions

§ 7551 - Omitted

§ 7552 - Motor vehicle compliance program fees

§ 7553 - Prohibition on production of engines requiring leaded gasoline

§ 7554 - Urban bus standards

§ 7571 - Establishment of standards

§ 7572 - Enforcement of standards

§ 7573 - State standards and controls

§ 7574 - Definitions

§ 7581 - Definitions

§ 7582 - Requirements applicable to clean-fuel vehicles

§ 7583 - Standards for light-duty clean-fuel vehicles

§ 7584 - Administration and enforcement as per California standards

§ 7585 - Standards for heavy-duty clean-fuel vehicles (GVWR above 8,500 up to 26,000 lbs.)

§ 7586 - Centrally fueled fleets

§ 7587 - Vehicle conversions

§ 7588 - Federal agency fleets

§ 7589 - California pilot test program

§ 7590 - General provisions

§ 7601 - Administration

§ 7602 - Definitions

§ 7603 - Emergency powers

§ 7604 - Citizen suits

§ 7605 - Representation in litigation

§ 7606 - Federal procurement

§ 7607 - Administrative proceedings and judicial review

§ 7608 - Mandatory licensing

§ 7609 - Policy review

§ 7610 - Other authority

§ 7611 - Records and audit

§ 7612 - Economic impact analyses

§ 7613 - Repealed.

§ 7614 - Labor standards

§ 7615 - Separability

§ 7616 - Sewage treatment grants

§ 7617 - Economic impact assessment

§ 7618 - Repealed.

§ 7619 - Air quality monitoring

§ 7620 - Standardized air quality modeling

§ 7621 - Employment effects

§ 7622 - Employee protection

§ 7623 - Repealed.

§ 7624 - Cost of vapor recovery equipment

§ 7625 - Vapor recovery for small business marketers of petroleum products

42 U.S. Code § 7450 to 7459 - Repealed.

§ 7625a - Statutory construction

§ 7626 - Authorization of appropriations

§ 7627 - Air pollution from Outer Continental Shelf activities

§ 7628 - Demonstration grant program for local governments

§ 7641 - Noise abatement

§ 7642 - Authorization of appropriations

§ 7651 - Findings and purposes

§ 7651a - Definitions

§ 7651b - Sulfur dioxide allowance program for existing and new units

§ 7651c - Phase I sulfur dioxide requirements

§ 7651d - Phase II sulfur dioxide requirements

§ 7651e - Allowances for States with emissions rates at or below 0.80 lbs/mmBtu

§ 7651f - Nitrogen oxides emission reduction program

§ 7651g - Permits and compliance plans

§ 7651h - Repowered sources

§ 7651i - Election for additional sources

§ 7651j - Excess emissions penalty

§ 7651k - Monitoring, reporting, and recordkeeping requirements

42 U.S. Code § -

§ 7651m - Enforcement

§ 7651n - Clean coal technology regulatory incentives

42 U.S. Code § -

§ 7661 - Definitions

§ 7661a - Permit programs

§ 7661b - Permit applications

§ 7661c - Permit requirements and conditions

§ 7661d - Notification to Administrator and contiguous States

§ 7661e - Other authorities

§ 7661f - Small business stationary source technical and environmental compliance assistance program

§ 7671 - Definitions

§ 7671a - Listing of class I and class II substances

§ 7671b - Monitoring and reporting requirements

§ 7671c - Phase-out of production and consumption of class I substances

§ 7671d - Phase-out of production and consumption of class II substances

§ 7671e - Accelerated schedule

§ 7671f - Exchange authority

§ 7671g - National recycling and emission reduction program

§ 7671h - Servicing of motor vehicle air conditioners

§ 7671i - Nonessential products containing chlorofluorocarbons

§ 7671j - Labeling

§ 7671k - Safe alternatives policy

42 U.S. Code § -

§ 7671m - Relationship to other laws

§ 7671n - Authority of Administrator

42 U.S. Code § -

§ 7671p - International cooperation

§ 7671q - Miscellaneous provisions

Title 40 published on 2014-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 81 after this date.

  • 2014-12-11; vol. 79 # 238 - Thursday, December 11, 2014
    1. 79 FR 73525 - Approval and Promulgation of Air Quality Implementation Plans; Washington; Redesignation to Attainment for the Tacoma-Pierce County Nonattainment Area and Approval of Associated Maintenance Plan for the 2006 24-Hour Fine Particulate Matter Standard
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      ENVIRONMENTAL PROTECTION AGENCY
      Proposed rule.
      Comments must be received on or before January 12, 2015.
      40 CFR Parts 52 and 81