OZONE Technical Resources

This page is intended for a technical audience and provides links to documents and other information on EPA's website related to ground-level ozone. This page is not necessarily a comprehensive list of all ozone information available, but provides links to the documents most frequently requested by our technical community.

Data

Regulations and Policy

F. Ambient Standards & Court Decision on 1997 Standards
G. Information 1997 8-hour Ozone Nonattainment Areas
H. Implementation Rule for the 1997 8-hour Ozone Standard
I. Regional Transport NOx SIP Call, Section 126, and FIP Data and Information
J. NOx Documents and Memos

Other Technical Resources

K. Contacts - US EPA and Other Federal and State Agency Contacts
L. US Code, Federal Regulations and Court Decisions
M. Reference Books, Conversion Factors, etc.
N. Other Information (including Memoranda)

EPA Offices and Other Government Offices

EPA - United States Environmental Protection Agency's Homepage
EPA OAR - Office of Air and Radiation
EPA OAR - Policy and Guidance
EPA OAR OAQPS TTN - Technology Transfer Network - Technical site for Information Transfer and Sharing
EPA NSR - New Source Review
EPA OTAQ - Office of Transportation and Air Quality (formerly: Office of Mobile Sources)
EPA Climate Change Web Site - Greenhouse gases
EPA Clean Air Markets Program
EPA OAR Tribal Air
US Census Bureau - Population, Surveys, Manufacturing, Economic Census, TIGER files
National Park Service Air Resources Division
Return to Table of Contents at the top of this page

TTNWeb File Types - What PDF, DBF, WPD, TXT, ZIP mean

To obtain PDF and UnZip programs

A. Nonattainment Areas

All Nonattainment Areas (Green Book) including 8-hour ozone nonattainment areas
Fine Particle (PM 2.5) Designations
1. Map
2. Comparison of State Recommendations on PM2.5 to EPA Responses
3. 40 CFR Part 81
Code of Federal Regulations, 40 CFR 81, Subpart C -- Section 107 Attainment Status Designations for each year after 1996
Sept 4, 1992 and Oct 28, 1992 Memorandums by John Calcagni concerning Procedures for Processing Requests to Redesignate Areas to Attainment and State Implementation Plan (SIP) Actions Submitted in Response to Clean Air Act (Act) Deadlines (PDF format)
Return to Table of Contents at the top of this page

B. Air Quality Data

C. Air Emissions Data

National Emissions Source Reports
Select a State, then Select a Report
1. NET Facility Emissions Report - Lists each point source in order of its pollutant emissions, ranking them from largest to smallest
2. NET Facility Count Report - The number of point sources and their total air pollutant emissions for each geographic area (county, state, or EPA region)
3. NET Facility SIC Report - The number of point sources and their total air pollutant emissions for each Standard Industrial Classification (SIC)
4. NET Tier Report - Total emissions of point sources and of area + mobile sources in 14 major categories (Tier 1) or 75 more detailed categories (Tier 2), for each geographic area (county, state, or EPA region)
5. NET Plant Locator Map - Map shows the locations of "plants" -- stationary sources, point sources, facilities -- that emit air pollutants you select.
6. Plant/Monitor Locator Map - Map shows the locations of air pollution point sources (plants) and air monitoring sites (monitors). At your discretion, a map may include either plants or monitors, or both.
7. NET Emissions Summary Map - Is a composite image, containing a map and five bar charts that illustrate the distribution of criteria pollutant emissions from point sources -- facilities such as power plants and factories.
8. NET Emissions Distribution Map - Map indicates the aggregate air pollutant emissions of every county in the selected geographic area.
9. Plant Data Search - Shows a graphic composed of one map, one chart and demographic information. The map indicates the location of the selected plant. The bar chart shows the estimated annual emissions of all criteria pollutants. The demographic information includes the plant address, SIC, Latest Emission Inventory Year, Plant Contact, Compliance Status, Significant Violator Status, and Operating Status.
National Emission Inventory -
1. National Emissions Inventory Input Format
EPA's Emission Factor and Inventory Group (EFIG)
Green Vehicle Guide - Information about the air pollution emissions and fuel economy performance of different vehicles
National Air Pollutant Emission Trends Report (Summary)
1. Air Pollutant Emission Trends
2. 1998
Procedures for the Preparation of Emission Inventories for Carbon Monoxide and Precursors of Ozone, Volume I, EPA-450/4-91-016
Electric Generating Plants
Emission Tracking System/Continuous Emissions Monitoring data for 1995, 1996, 1997, 1998
View Sample Reports: From the State summary, click on a State to view annual, ozone season, and ozone day data by plant
Plant Level Data - Click on a plant to view annual, ozone season, ozone day, and monthlydata by boiler NOx Emissions Boiler Level Data - Heat Input Boiler Level Data - NOx Rate - Click on a boiler to view daily, maximum hourly, and hourly level data Hourly Data - NOx Emissions Hourly Data - Heat Input Hourly Data - NOx Rate
EPA's Clean Air Markets site
1. Clean Air Market Emissions Data & Compliance Reports
2. The Emissions & Generation Resource Integrated Database (E-GRID) is an integrated source of data regarding environmental characteristics of electric power generation. An integration of 12 different federal data bases, E-GRID provides air pollutant emission and resource mix information for thousands of individual power plants and generating companies for 1996-98. E-GRID provides emissions per unit of electricity, permitting direct comparisons of pollution levels from different power sources (EGRID)
3. Acid Rain Emissions Data - Create a custom query with annual, ozone season, quarterly, monthly or hourly data for either a specific plant(s) or a specific type of unit.
Integrated Planning Model (IPM)
1. Intro, Documentation and NEEDS (National Electric Energy System) Database
2. Results Using IPM
3. Comparative analysis of several models (DOE)
DOE - Electric Generating Unit Inventory
1. Existing Generating Units at U.S. Electric Utilities by State, Company, and Plant 1999 TXT file
2. by Plant Name
3. by State
4. by Utility
5. Inventory of Electric Utility Power Plants
6. Inventory of Electric Utility Power Plants Data Tables HTML
7. Annual Electric Generator Report--Utility (Form EIA-860 Database)
Envirofacts - EPA AIRS Facility Data Bases - Entity & Attribute Information
Air Releases Query Form - Search the AIRS/AFS Database
Facility Information Query Form
1. To find information about certain industries (such as the name and address):
2. Go to EPA's Envirofacts database at www.epa.gov/enviro/html/fii/fii_query_java.html (see link above)
3. Scroll down to FACILITY INDUSTRIAL CLASSIFICATION SEARCH and enter the appropriate SIC or NAICS for the industry
4. Scroll to the bottom and click SEARCH
Federal Energy Regulatory Commission
Toxics Data
1. Toxics Release Inventory (TRI)
  1. Get TRI Data
2. EPA's Air Toxics Website
EPA's Office of Transportation and Air Quality - OTAQ (formerly: Office of Mobile Sources)
1. Tier 2/Gasoline Sulfur Final Rulemaking
2. Tier 2 Study of Vehicle Emissions
3. Procedures for Developing Base Year and Future Year Mass and Modeling Inventories for the Tier II Final Rulemaking - describes the details of the VMT projection methodology. PDF 30 MEGS - large file
4. MOBILE6 Vehicle Emission Modeling Software
State level VMT (in millions of miles traveled per year) by the three vehicle categories. Estimates are included for 1990-98, 2007, 2020, and 2030. ZIP
2001 Urban Mobility Study by Texas Transportation Institute, or Texas A&M University System (TAMUS).
State Information
1. California Emissions Inventory Data
  1. County Summary
  2. Air Basin
  3. Facility Search - Each Plants Emissions
2. Texas - Results of Grandfathered Emissions Survey
3. Texas - Sources of Air Pollution
Return to Table of Contents at the top of this page

D. Census Data, MSA Info and Maps

E. Meteorological Data

NOAA Reports - Cool and Wet Summers
1. NOAA Reports Cool 2004 Summer, Seventh Coldest August On Record
2. June-August 2003 was wetter than average, ranking 15th wettest in the last 109 years.
3. Temperature and Precipitation by Month, Season, Year
4. By Year Temp Prec
5. Summer - June through August
6. Climate Summary 2003 2004
7. Coldest-Warmest 2003 2004
8. Driest-Wettest 2003 2004
9. Prec % from norm 2003 2004
10. By Year Temp Prec
11. 2004
12. Climate Summary Jun Jul Aug
13. Coldest-Warmest Jun Jul Aug
14. Temp % from norm Jun Jul Aug
15. Driest-Wettest Jun Jul Aug
16. Prec % from norm Jun Jul Aug
17. 2003
18. Climate Summary Jun Jul Aug
19. Coldest-Warmest Jun Jul Aug
20. Temp % from norm Jun Jul Aug
21. Driest-Wettest Jun Jul Aug
22. Prec % from norm Jun Jul Aug
23. Stagnation Maps
24. 2003-2004 Jun Jul Aug Jun Jul Aug
25. 2001-2002 Jun Jul Aug Jun Jul Aug
EPA Draft Guidance on the Use of Models and Other Analyses in Attainment Demonstrations for the 8-hour Ozone NAAQS, EPA-454/R-99-004, (May 1999)
WR Plot Wind Rose Program / Under Related Programs at bottom of page
Wind data at North Carolina - National Weather Service Meteorological Data Sets
NC Meteorological Links - Satellite, Trajectories and other weather sites
NOAA
1. The National Climatic Data Center (NCDC) is the world's largest active archive of weather data
2. Weather, Warnings, Forecasts, Model Products, Climate information, Facsimile Charts, Observations, links to government web sites, documentation on meteorology, meteorological standards, Telecommunication protocols, WMO Abbreviated Headings, NWS organization, NESDIS Imagery, hydrometeorologic, hydrologic.
3. Weather and Climate Sites
4. NOAA Degree Day Statistics
5. The Weather Calculator
6. Emergency Managers Weather Information Network
7. Interactive Weather Information Network (IWIN) interfaces: Animated Graphics
  1. Interactive Weather Information Network (IWIN) interfaces: Animated Graphics version (High speed Internet connections)
  2. Not Animated
8. National Weather Service Homepages
9. National Weather Service Offices and Forecast Offices
10. OSEI - Operational Significant Event Imagery team produces high-resolution, detailed imagery of significant environmental events which are visible in remotely-sensed data - Includes Fires
NASA
1. Geostationary Satellite Server
2. TOMS Aerosol Hot Spots Page
Understanding your weather forecast
University of Michigan at Ann Arbor Weather Data Source
1. Computer Model Forecasts (and Discussions)
2. USA Weather
3. 700 Weather Cams
4. Weather Maps
5. Radar & Satellite
6. Travel Cities Weather page! From here, forecasts, current conditions, color satellite imagery, and radar are available for over 30 cities
7. Numerous Links to other weather sites
Penn State Real-Time Weather
Forest Service - Stagnation maps
Return to Table of Contents at the top of this page

F. Ambient Standards & Court Decision on 1997 Standards

Ozone Standard Criteria Documents, Staff Papers, Technical Documents and Notices
National Ambient Air Quality Standards (NAAQS)
Information on 1997 Ozone and Particulate Matter Standards
1. New Air Quality Standards for Ozone and Particulate Matter
  1. Background Information and Notices
  2. 7/18/97 Federal Register Notice PDF
2. New Ozone Standard Federal Register Notice of July 18, 1997
3. Implementation of Revised Standards for O3 & PM - July 16, 1997 Presidential Document signed by President Clinton
4. Health And Environmental Effects Of Ground-Level Ozone
5. National Ambient Air Quality Standards (NAAQS)
  1. Summary of Ambient Standards
  2. Ambient Standards in 40 CFR Part 50 (selected appendixes) (all app.) PDF (all app.)
Court Cases
1. March 26, 2002, DC Circuit Court of Appeals Decision No. 97-1440 Upholding Ozone and PM Standards (American Trucking Association) If not available
2. November 14, 2001, Federal Register - National Ambient Air Quality Standards for Ozone: Proposed Response To Remand
3. Supreme Court Opinion - Choose - Whitman v. American Trucking Assns., Inc. (2/27/01 Docket 99-1257) PDF
4. Supreme Court - Syllabus, Opinion and Concurrence (Cornell)
5. US Court of Appeals - DC - Remand of Ozone and PM Standards (Choose opinions/May 1999/97-1440a)
6. EPA's Updated Ozone and Particulate Matter Air Quality Standards
  1. EPA Summary of the Court's Decision - October 29, 1999
  2. Use this document if you cannot find it on the Court's page
Guidance and Technical Information
1. Ozone Seasons
2. Ozone Seasons with some notices attached
3. 40 CFR 58 (under Code of Federal Regulations)
4. Memo on how to calculate the 1-hour Design Values by W. Laxton on June 18, 1990
5. Guideline for the Interpretation of Ozone (1-hour) Air Quality Standards, January 1979
6. Guideline on Data Handling Conventions for the 8-hour Ozone NAAQS - December 1998 in Wordperfect and PDF
  1. in HTML to view on web
7. Guideline on the Identification and Use of Air Quality Data Affected by Exceptional Events, July 1986
8. OAQPS memorandum "Agency Policy on the Use of Special Purpose Monitoring Data" by John Seitz on August 22, 1997 (in HTML)
  1. PDF
9. Guideline on the Identification and Use of Air Quality Data Affected by Exceptional Events, July 1986
10. Guidance on Assessing the Impacts of May 1998 Mexican Fires on O3 Levels in the US November 10, 1998
11. April 13, 1992 Letter Clarification of Definition of Ambient Air
12. Return to Table of Contents at the top of this page

G. Information 1997 8-hour Ozone Nonattainment Areas

General Information
1. 8-hour Ozone Ground Level Designations
2. Basic Information
3. Reclassifications Sept 22, 2004 FR Notice
4. Myths and Facts
5. Ozone & Health
6. A Timeline
7. Policy Guidance
8. Frequently Asked Questions
9. Press Release
10. Fact Sheet
11. Sample Requirements
Technical Support
1. Technical justification in support of EPA's final designations. (ZIP, all chapters, 99.8 MB)
  1. The following chapters are in PDF files:
  2. 1: Introduction
  3. 2: 8-Hour Ozone Nonattainment Designations and Classifications by State
  4. 3: Justifications in Support of EPA's 8-Hour Ozone Designations and Classifications
  5. 4: Classifications and Air Quality Data
  6. 5: Ranking of Nonattainment Counties
  7. 6: Additional Supporting Documents
  8. 7: Evaluation of Early Action Compact Local Plans
  9. Appendix A
2. Responses to Comment on 8-hour ozone designations (PDF)
3. Technical justification in support of EPA's intended (not final) nonattainment areas (ZIP)
State Recommendations and EPA Response Documents
State 2000 Recommendation, State 2003 Recommendation, EPA Response and State Remarks on EPA Response
Regions: 1 2 3 4 5 6 7 8 9 10
Docket (It takes a long time to load)
Designated Nonattainment and Maintenance Areas for All Pollutants - Green Book
1. 8-Hour Ozone Nonattainment Areas
  1. Nonattainment Area Selections
    1. Area Listings
    2. Area Maps
    3. Area Designation Data
      1. Air Quality Data, Population, Counties
    4. Summary Reports
      1. Nonattainment Area Summary Report
  2. Comparison to Other Standards
  3. Federal Register Notices
    1. 8-Hour Ozone Designation Federal Register Notice [ HTML ] [ PDF ]
  4. Contact information for questions on individual 8-Hour Ozone areas
2. Criteria Pollutant Reports (On the Greenbook)
  1. Criteria Pollutant Reports (On the Greenbook)
    Note: Reports 1. and 4. do not currently include 8-hour Ozone.
    1. Criteria Pollutant Nonattainment Area Report
      This report includes the Number of Counties, Population and Classification with links to counties included in each area. The listing is by State then Area (all criteria pollutants on a single line) and includes designated Section 185A and Incomplete/No Data ozone nonattainment areas.
    2. Criteria Pollutant Nonattainment Area Detail Report
      This report contains a listing by State, Area then Pollutant (each pollutant on a separate line) and includes designated Section 185A and Incomplete/No Data ozone nonattainment areas.
    3. Currently Designated Nonattainment Areas for All Criteria Pollutants
      This report includes Counties Designated Nonattainment and contains a listing by State, County then Pollutant. It includes designated Section 185A and Incomplete/No Data ozone nonattainment areas.
    4. Nonattainment Status for Each County by Year for Each Pollutant
      This report includes Nonattainment and Maintenance Areas with History, and Counties Currently or Previously Designated Nonattainment. The listing is by State, County then Pollutant, and includes designated Section 185A and Incomplete/No Data ozone nonattainment areas.
8-hour OZONE Early Action Compacts
1. Early Action Compact agreements and supporting documents by state and area
2. Rulemaking Notices
  1. Final Rule for First Deferred Effective Date (September 30, 2005)
  2. Published Final Rule for Air Quality Designations and Classifications for the 8-Hour Ozone National Ambient Air Quality Standards; Early Action Compact Areas With Deferred Effective Dates ... Federal Register 69: 23858-23951 (PDF)
  3. April 15, 2004 Response to Comments Document for the following EPA Proposed Rules [1] Deferral of Effective Date of Nonattainment Designations for 8-hour Ozone National Ambient Air Quality Standard for Early Action Compact Areas (Docket No. OAR-2003-0090-0278) and [2] Early Action Compact-related Comments for Proposed Rule to Implement the 8-hour Ozone National Ambient Air Quality Standard (Docket No. OAR-2003-0090-0717)
  4. April 15, 2004 Evaluation of Control Strategies and Technical Assessments for Early Action Compact Local Plans ... March 31, 2004 Milestone (Chapter 7 in 8-Hour Ozone Designations Technical Support Document) (PDF)
  5. April 30, 2004 Clean Air Ozone Designations Rule including information about Early Action Compact deferrals (PDF)
  6. December 16, 2003 Published Proposed Rule for First Deferred Effective Date ... Federal Register 68: 70108-70119 (PDF)
3. Guidance and Other Resources
  1. Weblinks to State and Local Websites (February 18, 2004) (PDF)
  2. Matrix of EPA Guidance Documents for Preparing EAC Control Measures (January 16, 2004) (PDF)
  3. Guidance for the June 16, 2003 Submission and Other Clarifications (January 16, 2004) (PDF)
  4. Schedule for 8-Hour Ozone Designations and its Effect on Early Action Compacts (November 14, 2002) (PDF)
  5. Protocol for Early Action Compacts Designed to Achieve and Maintain the 8-hour Ozone Standard (June 19, 2002) (PDF)
4. Milestone Requirements
5. Related Correspondence
6. Frequently Asked Questions
7. Summary of Local Measures Under Consideration by EAC Areas
8. List of Early Action Compacts with Links to Area-Specific Submittals and Information
9. Map - Location of Early Action Compacts (PDF)
Data
1. Area and County Designation Data
  1. Area Designation Data Located Under Each Pollutant (Example, 8-hr Ozone)
  2. Nonattainment and Maintenance County Data
  3. For database files Contact Us
2. 8-hour Ozone Air Quality Data (on Green Book)
3. National Park Service Property in 8-hr Ozone Nonattainment Areas
Guidance on Designations for the 8-Hour Ozone NAAQS
1. Boundary Guidance - In another step to ensure that Americans breathe cleaner air, EPA on March 28, 2000, issued guidance for states to use in recommending areas to be designated as attainment and nonattainment for the 8-hour ozone standard. This non-binding guidance outlines an extensive process involving governors and EPA to eventually determine appropriate boundaries for the attainment and nonattainment areas. See the following for more information:
2. June 25, 1999 Memo
3. March 28, 2000 Fact Sheet on the boundary guidance PDF
4. March 28, 2000 Memo Boundary Guidance on Air Quality Designations for the 8-Hour Ozone Standard PDF
5. March 28, 2000 Memo that outlines the designation process PDF
6. June 6, 2000 Letter to Ohio from EPA concerning designating violating areas as nonattainment
7. July 18, 2000 Memo - Guidance on 8-Hour Ozone Designations for Indian Tribes
8. March 14, 2002 Concent Decree - 8-hour Ozone Designations Schedule (PDF)
9. November 20, 2002 Federal Register, Proposed Consent Decree, Clean Air Act Citizen Suit (PDF)
10. November 14, 2002 Schedule for 8-hour Ozone Designations and Its Effect on Early Action Compacts
11. February 27, 2003 Extension for States and Tribes to Submit Air Quality Designation Recommendations for the 8-Hour Ozone National Ambient Air Quality Standards (PDF)
Technical Information on Planning for the 8-hour Ozone Standard
1. Technical Data - Summary and Detailed Emissions Inventory Data, Air Quality Data, Wind Roses, Modeling, Population Projections, Where People Work, Maps, (Data to aid in ozone designations)
  1. Web Pages Site Map to the Technical Data
  2. Quick link to specific pages
2. Modeled 4th Daily Maximum 8-hour Average for Ozone
3. Wind Roses
4. Color-Shaded Relief Maps of the U.S. by State
5. Population Projections by County
6. Journey to Work
  1. Number of workers who commute to an MSA which is outside their county of residence (Summary)
  2. Number of workers who commute to an MSA which is outside their county of residence (Detailed County Data)
  3. Where People Work - By State Then County - Entire US
7. Vehicle Miles Traveled (VMT) by State and County
8. Distance to MSA from Counties
9. Census Data - 1999 and 2003 Metropolitian Areas
10. 8-hour Ozone NAAQS Implementation Rule Development
11. Return to Table of Contents at the top of this page

H. Implementation Rule for the 1997 8-hour Ozone Standard

Ozone 8-hour Implementation Approach
Proposed Rule
Public Comments and link to EPA's EDOCKET
Issue Papers
Planning Documents
Meeting Materials
EPA Correspondence
Other Materials
Air Quality Data
Return to Table of Contents at the top of this page

I. Regional Transport NOx SIP Call, Section 126, and FIP Data and Information

Clean Air Interstate Rule (CAIR)
Regional Transport of Ozone - NOx SIP Call - Transport FIPs - Section 126 Petitions - Ozone Transport Assessment Group (OTAG) - Related Files, Notices, etc. (main web site)
1. Section 126 Petitions--Findings of Significant Contribution and Rulemakings
February 22, 2002, Interstate Ozone Transport: Response to Court Decisions on the NOx SIP Call, NOx SIP Call Technical Amendments, and Section 126 Rules PDF
February 22, 2002, Rulemaking on Section 126 Petitions From New York and Connecticut Regarding Sources in Michigan; Revision of Definition of Applicable Requirement for Title V Operating Permit Programs PDF
Final NOx SIP Call Rulemaking Federal Register Notice (63 FR 57356, October 27, 1998)
1. pages start at 57356-57404 PDF
2. pages 57405-57454 PDF
3. 57455-end PDF
4. ZIP
Final Rule Making Findings of Failure to Submit Required State Implementation Plans for the NOx SIP Call Federal Register Notice (65 FR 81366, December 26, 2000) If not available
OAR Policy and Guidance - Site Index
1. Information on Rules for Reducing Regional Transport of Ground-Level Ozone (NOx SIP Call)
2. Reopening of Emissions Inventory Comment Periods for the Findings of Significant Contribution and Rulemakings on Section 126 Petitions and Federal Implementation Plans for Purposes of Reducing Interstate Transport of Ozone (PDF)
3. NOx SIP Call Frequently Asked Questions, Volume #1 WPD
4. NOx SIP Call Budget and Modeling Inventory Technical Support Document WPD
5. NOx SIP Call Response to Significant Comments Document WPD
Transitional Conformity Data and Information
Clear Skies Initiative
1. Clear Skies Initiative Home Page
2. Technical Information
Return to Table of Contents at the top of this page

J. NOx Documents and Memos

Nitrogen Oxides: Impacts on Public Health and the Environment 8-97 PDF WPD
NOx Policy Documents for the CAA of 1990 3/96 PDF WPD
NOx Controls/Costs - Cement Kilns - Update of ACT Document - 9/15/2000
NOx Controls/Costs - Internal Combustion Engines - Update of ACT Document - 9/01/2000
NOx Documents - Alternative Control Technique (ACT) Documents
1. EXE is self-extracting ZIP file containing WPD files and or TXT files, ZIP files generally contain WPD files
2. NOx Nitric and Adipic Acid Plants (EPA-450/3-91-026) PDF ZIP
3. NOx Emissions from Cement Manufacturing (EPA453/R-94-004) PDF ZIP
4. NOx Emissions from Process Heater (Revised) (EPA-453/R-93-034) PDF EXE
5. NOx Emissions from Glass Manufacturing (EPA-453/R-94-037) PDF EXE
6. NOx Emissions from Iron & Steel Mills (EPA-453/R-94-065) PDF EXE
7. NOx Emissions from Stationary Gas Turbine (EPA-453/R-93-007) PDF EXE
8. NOx Emissions from Industrial/Commercial/Institutional (ICI) Boilers (EPA-453/R-94-022) PDF ZIP TXT
9. NOx Emissions from Utility Boiler; (EPA-453/R-94-023) PDF ZIP
10. Internal Combustion NOx Part 1 & 2 (EPA-453/R-93-032); Part 1 contains WP5, WP6 and TXT files; 1193 kb ZIP Part 2 contains WP6 and TXT files
Policy and Guidance Memos
1. State Implementation Plan (SIP) Call for Reducing Nitrogen Oxides (NOx)-- Stationary Reciprocating Internal Combustion Engines (8-22-02) PDF
2. Summary of State NOx RACT Rules PDF WPD
3. Summary of State/Local NOx Regulations - Stationary Sources - 5/04 PDF XLS
4. 1992 Nitrogen Oxides Supplement to the General Preamble for the Implementation of Title I ZIP
5. NOx emission budget concept PDF WPD
6. 1994 - Clarify NOx Substitution PDF WPD
7. Q's and A's NOx Emission Policy PDF WPD
8. Revised process NOx exemptions PDF WPD
9. NOx Q's and A's PDF WPD
10. NOx RACT cost effective control technology PDF WPD
11. RACT for repowering utility boilers PDF WPD
12. Fuel switching to meet RACT for NOx PDF WPD
13. De Minimus Value for NOx RACT PDF WPD
14. NOx Exemptions 2-8-95 PDF WPD
15. Scope of NOx Exemptions (1995) PDF WPD
16. NOx Substitution Guidance 8-5-94 in ZIP
17. Final NOx Exemption Guidance/Trans Memo 12-16-93 in ZIP
18. Applicability of NOx Requirements Sect. 182f PDF WPD
19. NOx Substitution Guidance 12-15-93 PDF WPD
Return to Table of Contents at the top of this page

K. Contacts - US EPA and Other Federal and State Agency Contacts

L. US Code, Federal Regulations, Court Decisions

US Code
Constitution, Statutes, and Codes
Search GPO Access Databases
GPO Access Online Resources: A-Z Resource List
Laws and Regulations
Clean Air Act
1. Clean Air Act
2. Full Text of Clean Air Act (CAA) Amendments (see 1/25/91 at bottom of list)
3. Full Text of the Clean Air Act In HTML format
Federal Register
Federal Register - Online via GPO Access
Federal Register - by Day
The List of CFR Sections Affected lists proposed, new, and amended Federal regulations that have been published in the Federal Register since the most recent revision date of a CFR title.
Retrieve an FR Page
The Code of Federal Regulations - Top Page
1. CFR 1997-2004
2. Code of Federal Regulations: Retrieve by CFR Citation
3. CFR Title 40 - EPA - 2004
4. 40 CFR 50 as PDF (Large file)
5. 40 CFR 51 as PDF (Large file)
  1. 40 CFR 51.100(s) - Definition - Volatile organic compounds (VOC)
6. 40 CFR 52 (first part) as PDF (Large file)
7. 40 CFR 52 continued as PDF (Large file)
8. 40 CFR 58 as PDF (Large file)
9. 40 CFR 81--DESIGNATION OF AREAS - Subpart C--Section 107 Attainment Status Designations As of:
  1. July 1, 2004 as PDF
  2. July 1, 2003 as PDF
  3. July 1, 2002 as PDF
  4. July 1, 2001 as PDF
  5. July 1, 2000
  6. July 1, 1999
  7. July 1, 1998
  8. July 1, 1997
  9. July 1, 1996
  10. March 3, 1978 Designations as PDF (large file 4 meg)
  11. EPA Summary of Nonattainment Areas (Green Book)
EPA Federal Register Environmental Documents
1. Air
Electronic Code of Federal Regulations (e-CFR)
1. 40 CFR Title 40: Protection of Environment
2. Chapter I - including Subchapter C - Air
3. Part 50--National Primary And Secondary Ambient Air Quality Standards
4. Part 51--Requirements For Preparation, Adoption, And Submittal Of Implementation Plans
5. Part 52 (52.01 to 52.1018)- Approval and Promulgation of Implementation Plans
6. Part 52 (52.1019--End) - Approval and Promulgation of Implementation Plans
7. Part 81--Designation Of Areas For Air Quality Planning Purposes
Federal and State Government Regulations and Program References
Federal Register Notices for NAAQS (Title I)- Proposed and Final Preambles and Rules
Federal Court Decisions
1. Supreme Court Decisions
2. U.S. Court of Appeals
3. U.S. Court of Appeals (Emory Law School)
4. U.S. Court of Appeals: First Circuit
5. Second Circuit
6. Third Circuit
7. Fouth Circuit
8. Fifth Circuit
9. Sixth Circuit
10. Seventh Circuit
11. Eighth Circuit
12. Ninth Circuit
13. Tenth Circuit
14. Eleventh Circuit
15. D.C.
16. Federal Circuit
EPA Dockets (EDOCKET) Dockets contain Federal Register notices, support documents, and public comments for regulations the Agency publishes and various non-regulatory activities.
July 2, 2002, Court Ruling Vacating the Washington, DC, SIP
July 10, 2002, Sierra Club vs EPA - Bump Up of 1hr Nonattainment Areas (PDF)
Return to Table of Contents at the top of this page

M. Reference Books, Conversion Factors, etc.

This file lists all counties in the United States defined as of January 1, 1990, alphabetically by State with related codes. There are several codes shown: FIPS MSA/CMSA/NECMA code, PMSA, FIPS State and County, then State and County Name
1. If not on Census web site
2. Federal Information Processing System (FIPS) state and county codes only
3. All Counties and CMSAs (FIPS Codes) with 1999 MSAs (with C/MSA codes not approved by Census, etc)
Acronyms and Abbreviations
1. Terms of the Environment
2. DOE Ames Lab - Acronyms Used by Environmental Groups and Agencies
North American Industry Classification System (NAICS) is replacing the U.S. Standard Industrial Classification (SIC) system
ZIP Code look up
Metric Conversions
National Institute of Standards and Technology CLOCK - TIME Clock using Java Clock without Java (In Netscape do View, Reload to update clock) Time Zone Conversion Time
Univ. of Michigan Reference - Census etc
EPA's Web Guide
Computer CPU Useage (must be inside EPAs firewall)
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N. Other Information (including Memoranda)

1-Hour Ozone Attainment Demonstrations - On Dec. 1, 1999, EPA proposed to take action on air quality plans for 10 major urban areas. These plans, known as 1-hour attainment demonstrations, outline emission reductions necessary for the areas to meet the 1-hour standard for ground-level ozone or smog. The 10 affected areas are: Atlanta; Baltimore; Chicago/Gary IN; Greater Connecticut; Houston/Galveston; Milwaukee; New York/Northern New Jersey/Long Island; Philadelphia/Wilmington/Trenton; Springfield MA; and Metropolitan Washington D.C. Attainment demonstrations for these areas will involve 13 states and the District of Columbia. Fact Sheet (PDF) Information about each area (PDF)
1. Notice of Proposed Actions on Attainment Demonstrations for the One-Hour National Ambient Air Quality Standards for Ozone
2. Notices for the following areas:
  Atlanta, GA; Baltimore, MD;
  Chicago/Gary IL;
  Chicago/Gary IN;
  Greater Connecticut;
  Houston/Galveston, TX;
  Milwaukee, WI;
  New York/Northern New Jersey/Long Island, NY;
  New York/Northern New Jersey/Long Island CT;
  New Jersey - New York-Northern New Jersey-Long Island nonattainment area(NAA) and the Philadelphia, Wilmington, Trenton NAA
  Philadelphia/Wilmington/Trenton, DE; Philadelphia/Wilmington/Trenton, MD;
  Philadelphia/Wilmington/Trenton, PA; Springfield MA;
  and Metropolitan Washington D.C., VA, MD
SIP Call for Birmingham, AL (Final Notice October 27, 2000) Proposal Notice
SIPs in Region 5
Region 7 Federally Approved Regulations
EPA analyses of costs, benefits, and economic and regulatory impacts of air quality management strategies, programs, and regulations
Reports for NAAQS (Title I) - Regulatory Impact Analyses (RIA)
NARSTO
1. NARSTO - Southern Oxidants Study
South Coast AQMD regulations
BEA - Bureau of Economic Analysis - National Growth Forecasts 1996-2007 and 1996-2030 PDF
EPA Ozone Depletion by EPA's Global Programs Division
National Resources Inventory - U.S. Department of Agriculture
1. Land Developed, 1992 - 1997
Indian Lands
1. Bureau of Indian Affairs
2. Maps of Indian Lands
3. Databases (AASHTO (American Association of State Highway and Transportation Officials)
4. EPA Tribal Air Web Site
5. NTERI National Tribal Environmental Research Institute
Protected Areas - Class I List of 156 Mandatory Class I Federal Areas
EPA's Regional Haze Program
Visibility in our Nation's Parks and Wilderness Areas
DOE-EPA - Fuel Economy and Efficiency, Gas Prices
Congestion Mitigation and Air Quality (CMAQ) Improvement Program
1. Populations and Weights By State, Nonattainment/Maintenance Area and County for FY 2003
2. FY 2003 CMAQ Program Apportionments
North Carolina Pollution Prevention
It All Adds Up to Cleaner Air is a public education and partnership-building initiative by EPA and DOT to reduce traffic congestion and air pollution
EPA Green Vehicles Website
Environmental Data Registry (EDR) definition, source, and uses of environmental data, catalogs EPA's data collections and helps locate environmental information, and Data Standards
EPA - Software for Environmental Awareness
EPA - Climate Change
EPA - Stratospheric Ozone Depletion
Canada - Stratospheric Ozone Depletion
Clean Air in Canada
Center for Air Pollution Impact and Trend Analysis
EPA Contracts Current Procurements, to download Requests for Proposals, and other CMD-RTP procurement-related matters.
Memoranda
Memoranda for NAAQS (Title I) Policy & Guidance Memos Including:
1. 1-hour Ozone Attainment Demonstrations and Tier 2/Sulfur Rulemaking: November 1999 Guidance Memo
2. Guidance on the Reasonably Available Control Measures (RACM) Requirement and Attainment Demonstration Submissions for Ozone Nonattainment Areas
  1. RACM Analysis for Four Serious Areas Designated Nonattainment for 1-hr Ozone NAAQS - PDF WPD
  2. RACM Analysis -- Attachment 2 (RACM stationary source analysis) spreadsheet format
3. Guidance on Designations for the 8-hour Ozone National Ambient Air Quality Standard
4. Guideline on Data Handling Conventions for the 8-Hour Ozone NAAQS
5. Second Extension of January 25,1995 Potential to Emit Transition Policy and Clarification of Interim Policy
6. Re-Issue of Early Planning Guidance for the Revised Ozone and Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS)
  1. Re-issue of the Early Planning Guidance for the Revised Ozone and Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) in Wordperfect and PDF June 16, 1998
  2. in HTML format to view on web
7. Guidance for Implementing the 1-Hour Ozone and Pre-Existing PM10 NAAQS
8. Extending the Date to Meet Ozone Standards for Areas Affected by Transport for Upwind Areas Policy
9. EPA letter to Governors on interim final stay on section 126 petitions for reducing interstate ozone transport
10. "Transport Policy" -- Notice of Proposed Interpretation and Request for Comments to Allow Areas Affected by Transport of Pollutants from Upwind Areas more time to meet the One-Hour Ground-Level Ozone Air Quality Standard
Federal Implementation Plans To Reduce the Regional Transport of Ozone; Proposed Rule October 21, 1998
DOT - FHWA - Status of Sanction Clocks
TTN - 1996 State Implementation Guidance Document - Municipal Waste Combustion: Summary of the Requirements for Section 111(d)/129 State Plans for Implementing the Municipal Waste Combustor Emission Guidelines (EPA-456R-96-003 (MWC5.zip)
Federal Register Notices for NAAQS (Title I)- Proposed and Final Preambles and Rules
Air Cleaning Devices for the Home
1. Ozone Generators That Are Sold As Air Cleaners (EPA Publication)
2. Hotlines and Resources - Indoor Air Quality (IAQ) Information Clearinghouse 1-800-438-4318
3. Air Cleaning Devices for the Home
Satellite Remote Sensing - home page
NASA - Earth Observatory's - The Ozone We Breath Ozone Depletion, Monitoring Ozone from Space etc
National Cancer Institute - Cancer Mortality - Maps and Graphs
Watershed Assessment, Tracking & Environmental Results
Ozone Flex
1. Supporting Innovative, Voluntary Strategies to Reduce Smog: Ozone Flex Program Memo of 6-22-01
2. EPA's Ozone Flex Guidelines - Factsheet
3. Region 6 Ozone Flex Program
Stage II Vapor Recovery Systems Issue Paper
Model Volatile Organic Compound Rules for Reasonably Available Control Technology, June 1992 and June 24, 1992 Memorandum From G. T. Helms
Memorandum - Exemption for Low-Use Coatings, G. T. Helms August 10, 1990
VOC Blue Book, May 25, 1988 - Issues Relating to VOC Regulation Cutpoints, Deficiencies and Deviations - Clarification to Appendix D of November 24, 1987 Federal Register
Record keeping Guidance Document for Surface Coating Operations and the Graphics Arts Industry, EPA 340/1-88-003, July 1989
A Guideline for Surface Coating Calculations, EPA-340/1-86-016, July 1986
Title I General Preamble 1990 of the Clean Air Act (ZIP)
Memorandum - Deadlines for Electric Generating Units (EGUs) and Non-Electric Generating Units (non-EGUs) under the Section 126 Rule - January 16, 2002 WPD
Control Cost Manual - Chapters
General Conformity Regulations
1. General Conformity Guidance: Questions and Answers - July 13, 1994 (PDF)
2. General Conformity Guidance: Questions and Answers - October 19, 1994 (PDF)
3. Region IX Memorandum to David Kessler of FAA, January 25, 1996 (PDF)
Nevada Hydrographic Regions/Basins
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