The Air Emissions Guide to USAF Stationary Sources (Stationary Source Guide) provides recommended methodologies and emission factors for calculating actual emissions for the most common types of stationary sources found at USAF installations.The pollutants addressed in the guide include criteria pollutants, hazardous air pollutants (HAPs), Volatile Organic Compounds (VOCs), and greenhouse gases (GHGs). The July 2016 guide is the most current version of the Stationary Source Guide; all other versions are superseded and considered obsolete.

The Air Emissions Guide to USAF Mobile Sources (Mobile Source Guide) provides recommended methodologies and emission factors for calculating actual emissions for the most common types of mobile sources found at USAF installations, including aerospace ground equipment (AGE), aircraft flying operations, on-road vehicles, and non-road vehicles/equipment. The pollutants addressed in the guide include criteria pollutants, hazardous air pollutants (HAPs), Volatile Organic Compounds (VOCs), and greenhouse gases (GHGs). The July 2016 guide is the most current version of the Source Guide; all other versions are superseded and considered obsolete.

The Air Emissions Guide to USAF Transitory Sources (Transitory Source Guide) provides recommended methodologies and emission factors for calculating actual emissions for the most common types of transitory sources found at USAF installations. Transitory sources are non-routine and/or seasonal sources (may be stationary, mobile or neither) that are short-term in nature. Transitory sources include: bulk storage tank cleaning, seasonal equipment, fuel spills, hot mix asphalt plants, prescribed burning, wild fires, all sources associated with construction, and all sources associated with site restoration/remediation. While historically transitory sources have often been erroneously included in stationary or mobile source air emission inventories, transitory source emissions should generally only be accounted for in evaluating potential air quality impacts of proposed action under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA); National Environmental Policy Act (NEPA), General Conformity, etc. The pollutants addressed in the guide include criteria pollutants, hazardous air pollutants (HAPs), Volatile Organic Compounds (VOCs), and greenhouse gases (GHGs). The July 2016 guide is the most current version of the Transitory Source Guide; all other versions are superseded and considered obsolete.

The PTE Guide provides standardized guidance and methodologies for establishing base-level PTE estimates for major source determinations. The guide evaluates USAF sources for physical and/or operational limitations to establish USAF-specific PTEs for individual source categories based on the Environmental Protection Agency’s historic guidance and methodologies.

The Air Quality EIAP Guide provides comprehensive instructions for assessing air quality impacts associated with USAF proposed action. The guide supplement 32 CFR 989, Environmental Impact Analysis Process, with guidance, procedures, and methodologies for meeting the air quality-specific requirements of the National Environmental Policy Act (NEPA) and Council on Environmental Quality’s (CEQ’s) Regulations for Implementing the Procedural Provisions of NEPA (40 CFR 1500-1508). Interim guidance is provided for dealing with the CEQ’s final Guidance for Federal Departments and Agencies on Consideration of Greenhouse Gas Emissions and the Effects of Climate Change in National Environmental Policy Act Reviews (see chapter 6). Additionally, the guide incorporates compliance requirements for 40 CFR 93 Subpart B, Determining Conformity of General Federal Actions to State or Federal Implementation Plans, and supersedes the USAF Air Quality EIAP Guide, Volume I (October 2014).

This guide is a continuation of the USAF Air Quality EIAP Guide and provides comprehensive instructions for performing a Level III, Advanced Air Quality Assessment. The guide provides comprehensive instructions for performing Levels III air quality EIAP assessments, and is intended to assist Air Quality Program Managers and/or Environmental Specialists in assessing advanced air quality impacts, if needed, of the USAF proposed actions. It provides guidance, procedures, and methodologies for use in carrying out an advanced quantitative and qualitative air quality EIAP assessment (which includes General Conformity Determinations).

The purpose of the USAF Guide for boilers located at Area Sources of Hazardous Air Pollutants is to provide certain Air Force personnel (technicians, boiler operators, etc.) with a general understanding of key requirements for complying with 40 CFR 63 Subpart JJJJJJ, National Emission Standards for Hazardous Air Pollutants for Area Sources: Industrial, Commercial, and Institutional Boilers (commonly referred to as Subpart JJJJJJ). Subpart JJJJJJ applies to boilers located at commercial, industrial, and institutional Area Source facilities that burn coal, oil, biomass, or other solid and liquid non-waste materials. An “Area Source” HAP facility emits less than 10 tons per year of any single air toxic and less than 25 tons per year of any combination of air toxics.

The purpose of the USAF Guide for boilers located at Area Sources of Hazardous Air Pollutants is to provide certain Air Force personnel (technicians, boiler operators, etc.) with a general understanding of key requirements for complying with 40 CFR 63 Subpart DDDDD, National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, Commercial, and Institutional Boilers (commonly referred to as Subpart DDDDD or Boiler MACT). A “Major Area Source” HAP facility emits 10 tons per year or more of any single air toxic and less than 25 tons or more per year of any combination of air toxics.

This guide provides a quick overview of Mandatory Greenhouse Gas Reporting Rule [40 CFR 98; aka Mandatory Reporting Rule, (MRR)] requirements of interest and relevance to the United States Air Force’s facilities. The guide addresses main issues of specific concern to the USAF, which include: the definition of facility (which provides for segmenting for military); who must report (in simple terms); deriving max heat capacity input for internal combustion engines, aircraft engines, and aircraft engines testing; explains what sources need to be reported; GHG estimating; report, and specific exit strategies.

The United States Air Force Guide to the Mandatory Greenhouse Gas Reporting Rule addresses the applicability, requirements, calculation methodologies, and exit strategies of the Mandatory Greenhouse Gas Reporting Rule, also known as the Mandatory Reporting Rule, as it pertains to the Air Force. The Mandatory Reporting Rule (MRR) is an Environmental Protection Agency (EPA)-led endeavor to gather information about greenhouse gases (GHGs). The objective is to determine which greenhouse gases are being emitted, how much of those greenhouse gases are being emitted, and from which industry sectors those greenhouse gases are being emitted.

Earth's global temperature has risen by 1.5 °F over the past century, and is projected to continue to rise. Small changes in the global temperature can translate to large and potentially dangerous shifts in climate and weather on a global scale and even at the state level. Many states have seen changes in rainfall, resulting in more floods, droughts, or intense rain, as well as more frequent and severe heat waves. Click on the EPA Logo to view EPA published climate change fact sheets for each state and territory.

The first GHG Tailoring Rule Fact Sheet (May 13, 2010) summarizes the EPA's Final Rule for Step 1 and Step 2; phasing in the GHG emission thresholds, applicability, and requirements.

The first GHG Tailoring Rule Fact Sheet (May 13, 2010) summarizes the EPA's Final Rule for Step 1 and Step 2; phasing in the GHG emission thresholds, applicability, and requirements.

Air Pollution factsheet describes and discusses Health Issues and the birth of the Clean Air Act in 1970.

Air Quality factsheet describes and discusses pollutant levels and possible effects on people.

UXO factsheet for developing solutions and providing project oversight for unexploded ordinance (UXO)-related operations.