Science & Technology
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Successful Watershed Management and Lessons Learned from EPA's National Estuary Program
A collection of important lessons for other coastal communities working to restore and protect their watersheds.
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Historical Lake Erie BUI Reports
Reports produced by the Lake Erie Lakewide Management Plan between 1997-2000. Each report assesses a beneficial use impairment in Lake Erie.
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Comparing EPA Analytical Methods for PFAS in Drinking Water
EPA Method 533 compliments EPA Method 537.1 and can be used to test for 11 additional per- and polyfluoroalkyl substances (PFAS).
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Field Equipment Cleaning and Decontamination
Field Branches Quality System and Technical Procedures
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Quality Management Plan for EPA Region 4
This Quality Management Plan describes Region 4's quality system.
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Glossary for Air Pollution Terms in Particle Pollution and Your Patients' Health
Glossary of terms used in PM and Your Patients' Health
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Anaerobic Digester/Biogas System Operator Guidebook
A handbook for those considering biogas technology as a manure management option, it provides a step-by-step method to determine what biogas system is appropriate for a livestock facility
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Download and Install the GLI Clearinghouse
How to download and install the GLI Clearinghouse MS-Access database. Summary of changes since the previous version.
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Evaluating Bioactivity of Tire Preservative, 6PPD, and its Degradant, 6PPD-quinone, in High Throughput Assays
A factsheet describing the use of bioassays to to identify alternative toxicity testing methods that can detect 6PPD-quinone’s biological activity in salmonids at a lower cost and higher throughput than toxicity testing.
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2013/2014 Urban Waters Small Grants Program: Eligible Geographic Areas and Associated Hydrologic Unit Codes (HUCs)
2013/2014 Urban Waters Small Grants Program: Eligible Geographic Areas and Associated Hydrologic Unit Codes (HUCs)
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Water Quality and Quantity from Greater Philadelphia Area / Delaware River Watershed
This page provides background information on the Greater Philadelphia Area/Delaware River Watershed area one of the 18 Designated Urban Waters Locations.
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EPA Evaluations of Trading and Offset Programs in the Chesapeake Bay Watershed
This page provides the documents containing EPA's first evaluation of the Chesapeake Bay watershed jurisdictions' trading and offset programs.
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Resources for Watershed Planning
handbook and updated supplements are intended to help communities, watershed organizations, and state, local, tribal and federal environmental agencies develop and implement watershed plans
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Application of Weight-of-Evidence Methods for Transparent and Defensible Numeric Nutrient Criteria Report
A webpage for EPA's Application of Weight-of-Evidence Methods for Transparent and Defensible Numeric Nutrient Criteria Report.
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JS Testing - SAM 2022 Biotoxin Methods Query
Laboratories measuring target chemical, radiochemical, pathogens, and biotoxin analytes in environmental samples can use this online query tool to identify analytical methods in EPA's Selected Analytical Methods for Environmental Remediation and Recovery
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Technical Guidance on Implementing the Stormwater Runoff Requirements for Federal Projects
Federal Projects under Section 438 of the Energy Independence and Security Act.
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EPA Toxicologists Focus Innovative Research on PFAS Compounds
EPA researchers have partnered with researchers at the National Toxicology Program to develop a tiered testing approach to quickly generate toxicity and kinetic information for approximately 75 PFAS compounds.
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Fenceline Monitoring
Article about EPA's work to find air pollution leaks with smaller, faster, cheaper measurement technology
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EPA Researchers Use Innovative Approach to Find PFAS in the Environment
EPA is using a new approach, non-targeted analysis, to help communities determine potential PFAS exposure.