Learn the Issues
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Xeric Ecoregion - National Rivers and Streams Assessment Results
NLA 2012 Results for the Xeric ecoregion
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Western Mountains Ecoregion - National Rivers and Streams Assessment Results
NLA 2012 Results for the Western Mountains ecoregion
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May a refiner use the same independent lab to satisfy the RFG independent sampling and testing requirements and to conduct sampling and testing needs that are unrelated to the RFG requirements (e.g., internal quality assurance or custody transfer sampling and testing)?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. Yes. (7/1/94) This question and answer was posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (pdf) (18.2 MB, July 2003, EPA420-R-03-009).
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Is splash blending of oxygenates allowed under the RFG program?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. Yes. (7/1/94) This question and answer was posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (pdf) (18.2 MB, July 2003, EPA420-R-03-009).
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1992 Earth Summit
Documents related to the 1992 Earth Summit in Rio
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Temperate Plains Ecoregion - National Rivers and Streams Assessment Results
NLA 2012 Results for the Temperate Plains ecoregion
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Southern Plains Ecoregion - National Rivers and Streams Assessment Results
NLA 2012 Results for the Southern Plains ecoregion
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Northern Plains Ecoregion - National Rivers and Streams Assessment Results
NLA 2012 Results for the Northern Plains ecoregion
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Northern Appalachians Ecoregion - National Rivers and Streams Assessment Results
NLA 2012 Results for the Northern Appalachians ecoregion
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Coastal Plains Ecoregion - National Rivers and Streams Assessment Results
NLA 2012 Results for the Coastal Plains ecoregion
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Section 80.74(a)(2)(ii) requires "the identification of the person who collected the sample and the person who performed the testing." In the case where samples are taken and analysis performed by an independent testing company, would it be sufficient to identify the independent testing company in place of the sampler and tester?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help. Yes. (4/18/95) This question and answer was posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (pdf) (18.2 MB, July 2003, EPA420-R-03-009).
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Ecoregional Results - National Rivers and Streams Assessment 2018-19
Results for the National Lakes Assessment 2012, including key findings, national results, ecoregional results, and state highlights.
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Reports and Data - National Rivers and Streams Assessment 2018-19
Products from the national lakes assessment 2017 including report, technical report, factsheet, data files, and data dashboard
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National Rivers & Streams Assessment 2013-14 Lab Operations Manual
The Lab Operations Manual for the NRSA 2013/14
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National Lakes Assessment 2012 Report
National Lakes Assessment 2012 Report
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Making Earth Day Every Day Infographic
Simple ways to make Earth Day every day!
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The Great Outdoors
Information about getting outdoors
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EPA Pumpkin Carving Templates
Download EPA pumpkin carving templates
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Swift Beef Company - Clean Water Act Public Notice
The EPA is providing notice of a proposed Administrative Penalty Assessment against Swift Beef Company for alleged violations of the terms and conditions of a National Pollutant Discharge Elimination System permit issued pursuant to Section 402 of the Clea
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CSC Tip Sheets: Incentive Techniques
Incentives are financial or non-financial rewards for taking actions that improve local sustainability. Learn about best practices for providing incentives.