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Naaqs

Guidance for 1-Hour SO

Public Review Draft 9/22/2011 iii Preface In the final primary National Ambient Air Quality Standard for Sulfur Dioxide (SO 2 NAAQS) rulemaking, published at 75 FR 35520 (June 22, 2010), EPA provided initial guidance in the preamble concerning the Clean Air Act (CAA) provisions that states and ...

NAAQS FACT SHEET

Center for Agricultural Air Quality Engineering & Science NATIONAL AMBIENT AIR QUALITY STANDARDS NAAQS FACT SHEET

PROCEDURES FOR DEMONSTRATING COMPLIANCE WITH 1-HOUR NO

PROCEDURES FOR DEMONSTRATING COMPLIANCE WITH 1-HOUR NO 2 NAAQS Compliance with the 1-hour NO 2 NAAQS is based on the multiyear average of the 98 th-percentile of the annual distribution of daily maximum 1-hour values not exceeding 100 ppb.

National Ambient Air Quality Standards (NAAQS)

Fact Sheet South Carolina Department of Health and Evironmental Control • www.scdhec.gov n National Ambient Air Quality Standards (NAAQS) What are the National Ambient Air Quality Standards (NAAQS)?

1997 National Ambient Air Quality Standards (NAAQS)

1997 National Ambient Air Quality Standards (NAAQS) 1997 National Ambient Air Quality Standards (NAAQS)

Interim 1-Hour Nitrogen Dioxide (NO

1-Hour NO 2 July 22, 2010 Page 1 Interim 1-Hour Nitrogen Dioxide (NO 2) NAAQS Implementation Guidance July 22, 2010 The New 1-Hour NO 2 National Ambient Air Quality Standards (NAAQS) The U.S. Environmental Protection Agency (EPA) promulgated a new 1-hour National Ambient Air Quality Standard ...

Federal Register/Vol. 76, No. 152/Monday, August 8, 2011 ...

SIP deficiencies relating to the 2006 PM2.5 NAAQS. 13 The specific findings made and actions taken by EPA are described in greater detail in the TSD

55542 Federal Register /Vol. 76, No. 173/Wednesday, September ...

SUMMARY: EPA is determining that the tri-state Huntington-Ashland, West Virginia-Kentucky-Ohio, fine particulate (PM 2.5) nonattainment Area (hereafter referred to as ''the Huntington-Ashland Area'' or ''Area'') has attained the 1997 annual PM 2.5 national ambient air quality standards (NAAQS) and additionally ...

Texas Natural Resource Conservation Commission

Texas Natural Resource Conservation Commission INTEROFFICE MEMORANDUM T O : D ATE : NSRPD Technical Staff September 2, 1998 F ROM : Dom Ruggeri, Team Leader Air Dispersion Modeling Team (ADMT) S UBJECT : Background Concentration Determination for Use in NAAQS Analyses As defined by the EPA ...

erowe on DSK5CLS3C1PROD with PROPOSALS-1

(PM2.5) national ambient air quality standards (NAAQS or standards). We are proposing to find that the current Louisiana State Implementation Plan