Data and Tools
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Technical Data and Reports on Particulate Matter (PM) Measurements and SIP Status
EPA collects data from the states and regions on their air quality, including levels of pollutants such as PM, and state implementation plan (SIP) progress. This information is compiled in a database, and used to create reports, trend charts, and maps.
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eGRID2020 Corrections and Revisions
Describes corrections and revisions for updated eGRID data
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Notice of Data Availability - Preliminary Interstate Ozone Transport Modeling Data for the 2015 Ozone NAAQS
EPA is providing an opportunity to review ozone transport modeling data for the 2015 ozone NAAQS
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Interconnected Nature of Cross-State Air Pollution
Map of facilities showing regional ozone transport and the upwind-downwind linkages for ozone.
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Findings of Failure to Submit a Clean Air Act Section 110 State Implementation Plan for Interstate Transport for the 2015 Ozone National Ambient Air Quality Standards (NAAQS)
EPA is finding that seven states failed to submit complete interstate transport State Implementation Plans or SIPs for the 2015 8-hour ozone National Ambient Air Quality Standards
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Rescission of the Finding of Failure to Submit a Clean Air Act Section 110 State Implementation Plan for Interstate Transport for the 2015 Ozone National Ambient Air Quality Standards (NAAQS)
EPA is finding that seven states failed to submit complete interstate transport State Implementation Plans or SIPs for the 2015 8-hour ozone National Ambient Air Quality Standards
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March 2018 Memo and Supplemental Information Regarding Interstate Transport SIPs for the 2015 Ozone NAAQS
Projected air quality modeling results for ozone in 2023: States can use these data to develop their implementation plans.
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Memo and Supplemental Information Regarding Interstate Transport SIPs for the 2015 Ozone NAAQS
Projected air quality modeling results for ozone in 2023: States can use these data to develop their implementation plans.
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CHP Policies and Incentives
Access state and federal CHP policies and incentives through dCHPP (CHP policies and incentives database)
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Data Use and Citation
Citation for CASTNET data use in publications
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CHP Energy and Emissions Savings Calculator
Download the CHP Emissions Calculator, a tool that calculates the difference between the anticipated carbon dioxide, methane, nitrous oxide, sulfur dioxide, and nitrogen oxide emissions from a CHP system to those of a separate heat and power system.
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Using Professional Judgment to Develop a Sampling Design
Using Professional Judgement to Develop a Sampling Plan
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Selecting a Sampling Design
Systematic Planning - Sampling Designs
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Contact Us About the Quality Program
The contact us form for the EPA Quality Program regarding quality management activities for all environmental data collection and environmental technology programs performed by or for the Agency and the EPA Information Quality Guidelines.
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Accotink Creek High Flow Frequency Analysis
1989-2009 Hydrologic Years
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August 18, 2010 U.S. Geological Survey, National Water Information System
Surface water measurements, USGS 01654000 Accotink Creek
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WATERSKMZ Tutorial
The content and purpose of each mapping service WATERS exposes.
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AMTIC - Program Review and Oversight
AMTIC Program Review and Oversight
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Networks, Partners, and Programs
AMTIC Other Networks, Partners, and Programs
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GMD Five-Year Reviews
Sub-page for the GMD where FYRs can be easily viewed and compared.