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USAF Air Emission Guides

Air Emissions Guide for USAF Stationary Sources - Aug 2018

The Air Emissions Guide to USAF Stationary Sources (Stationary Source Guide) provides recommended methodologies and emission factors used to calculate emissions for stationary sources of pollutant emissions commonly found at USAF installations. The pollutants of concern addressed within the guide include criteria pollutants, Hazardous Air Pollutants (HAPs), Volatile Organic Compounds (VOCs), and greenhouse gases (GHGs). The August 2018 guide supersedes all prior versions of the Stationary Source Guide; older versions of this document are considered obsolete.

Air Emissions Guide for USAF Mobile Sources - Aug 2018

The Air Emissions Guide to USAF Mobile Sources (Mobile Source Guide) provides recommended methodologies and emission factors used to calculate emissions for mobile sources of pollutant emissions commonly found at USAF installations including aircraft, Aerospace Ground Equipment (AGE), non-road vehicles/equipment, and on-road vehicles. The pollutants addressed within the guide include criteria pollutants, Hazardous Air Pollutants (HAPs), Volatile Organic Compounds (VOCs), and greenhouse gases (GHGs). The August 2018 guide supersedes all prior versions of the Mobile Source Guide; older versions of this document are considered obsolete.

Air Emissions Guide for USAF Transitory Sources - Aug 2018

The Air Emissions Guide to USAF Transitory Sources (Transitory Source Guide) provides recommended methodologies and emission factors used to calculate emissions for Transitory sources of pollutant emissions commonly found at USAF installations. Transitory sources of emissions are those that are non-routine and/or seasonal sources (which may be stationary, mobile, or neither) that are short-term in nature. The sources included in this guide include: bulk storage tank cleaning, seasonal equipment, fuel spills, hot mix asphalt plants, prescribed burns, wild fires, construction, site restoration/remediation, and land use changes. Transitory sources have historically often been erroneously included in stationary or mobile source air emission inventories, though these sources should only be accounted for in evaluating potential air quality impacts of proposed actions under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA); National Environmental Policy Act (NEPA); General Conformity; etc.. The pollutants addressed within this guide include criteria pollutants, Hazardous Air Pollutants (HAPs), Volatile Organic Compounds (VOCs), and greenhouse gases (GHGs). The August 2018 guide supersedes all prior versions of the Transitory Source Guide; older versions of this document are considered obsolete.

USAF Potential to Emit (PTE) Guide - October 2014

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.

Other USAF Air Quality Guides

APIMS AEI Procedure - January 2018

The APIMS Air Emissions Inventory Procedure provides instructions and training on how to properly configure and maintain data within APIMS that is used to generate a comprehensive Air Force Air Emissions Inventory. This includes basic data set up and maintenance along with specific instructions on each of the most common source categories. Additional instructions on how to identify a source, the data collection requirements and proper calculation methodologies are detailed in each source category chapter.

USAF Air Quality Environmental Impact Analysis Process (EIAP) Guide - Fundamentals, Volume 1 of 2 - August 2017

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). 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 (dated August 2016).

USAF Air Quality Environmental Impact Analysis Process (EIAP) Guide - Advanced Assessments, Volume 2 of 2 - August 2018

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, and overseas EIAP. The guide provides step-by-step 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 air quality assessments for overseas EIAP and advanced quantitative and qualitative air quality EIAP assessment (which includes General Conformity Determinations).

USAF National Emission Standards for Hazardous Air Pollutants for Area Sources: Industrial, Commercial, and Institutional Boilers Guide - Aug 2018

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.

USAF Compliance Guide to Stationary Internal Combustion Engines - Aug 2019

The purpose of the United States Air Force (USAF) Stationary Internal Combustion Engine (ICE) Guide is to provide certain Air Force personnel (generator operators, Air Program Managers, etc.) with a general understanding of key requirements for complying with three interrelated stationary ICE air emission rules: National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal Combustion Engines (40 CFR Part 63, Subpart ZZZZ), New Source Performance Standards for Stationary Compression Ignition (40 CFR Part 60, Subpart IIII), and New Source Performance Standards for Stationary Spark Ignition Internal Combustion Engines (40 CFR 60, Subpart JJJJ). The USAF frequently uses stationary (e.g., remains in one location for more than 12 consecutive months) ICE to power equipment necessary to provide essential services (e.g., medical care, fire suppression) and critical mission support (e.g., flight line operations, communications).

USAF National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, Commercial, and Institutional Boilers Guide - Aug 2018

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.

USAF Guide to the Mandatory Greenhouse Gas Reporting Rule and Greenhouse Gas Tailoring Rule - May 2019

The United States Air Force Guide to the Mandatory Greenhouse Gas Reporting and Tailoring Rules discusses the applicability, requirements, and calculation methodologies for each rule as it pertains to the USAF. The first part of the Guide covers the Mandatory Greenhouse Gas Reporting Rule (MGHGRR) which requires large emitters of greenhouse gases (GHG) to collect GHG emissions data under a U.S. Environmental Protection Agency (EPA) reporting system. The second part of the Guide covers the "Tailoring Rule" which incorporates GHG emissions into the existing Title V and Prevention of Significant Deterioration ("PSD") permitting requirements. The Tailoring Rule regulates the same pollutants that are subject to reporting under the MGHGRR. While the court invalidated a portion of the Tailoring Rule, it held up EPA's ability to regulate GHG emissions for facilities already regulated for other pollutants under the PSD permit.

Air Quality Fact Sheets

EPA Climate Change Fact Sheets

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.

GHG Tailoring Rule Fact Sheet (Steps 1 & 2)

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.

GHG Tailoring Rule Fact Sheet (Step 3)

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.