Science & Technology
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Southern Resident Killer Whales
An assessment of the Southern Resident Killer Whale population in the Salish Sea. Part of the U.S. EPA and Environment and Climate Change Canada's Health of the Salish Sea Ecosystem Report.
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Stream Flow
An assessment of summer low flow trends in streams and rivers in the Salish Sea watershed. Part of the U.S. EPA and Environment and Climate Change Canada's Health of the Salish Sea Ecosystem Report.
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Resources for Mercury Science and Research
Links to EPA Resources for Mercury Science and Research
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Technical Overview of Ecological Risk Assessment - Analysis Phase: Exposure Characterization
Exposure Characterization is the second major component of the analysis phase of a risk assessment. For a pesticide risk assessment, the exposure characterization describes the potential or actual contact of a pesticide with a plant, animal, or media.
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Cutting-Edge Contracting Innovation Lab (CECIL)
EPA's Cutting-Edge Contracting Innovation Lab (CECIL) offers EPA's contracting professionals access to innovative acquisition concepts, techniques, and strategies with support. Inspired by the DHS PIL, this is the hub of EPA's innovation in acquisition.
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Green Infrastructure Funding and Technical Assistance Opportunities
Federal, nonprofit, and local funding resources are available to help communities implement green infrastructure.
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EPA Green Infrastructure Resources
Because green infrastructure involves many topic areas, this webpage includes a broad range of resources. Each of the topic areas listed below includes a selection of key resources for that topic.
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Multi-Agency Radiological Laboratory Analytical Protocols Manual (MARLAP)
The Multi-Agency Radiological Laboratory Analytical Protocols Manual (MARLAP) provides guidance for the planning, implementation and assessment phases of projects that require laboratory analysis of radionuclides.
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Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM)
The Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) provides detailed guidance on how to demonstrate that a site is in compliance with a radiation dose- or risk-based regulation.
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Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM), Proposed Revision 2 for Public Comment
A proposed Revision 2 of the MARSSIM Manual is available for public comment.
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MARSSIM Workgroup Materials
Multi-Agency Radiation Survey and Site Investigation Manual (MARSSIM) Workgroup materials found on this page include contact information, the Workgroup Charter and key goals
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Member and Observer Agencies
List of ISCORS Member and Observer Agencies
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13th Conference on Air Quality Modeling
The 13th Conference on Air Quality Modeling, mandated by Section 320 of the Clean Air Act, held on the EPA RTP Campus from November 14th through 15th, 2023. This is a public hearing on regulatory air quality model and technique development.
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Basic Information about the San Juan Watershed
Links to sections of the San Juan Watershed from EPA's Surf Your Watershed database.
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Initial Long-Term Monitoring in the San Juan Watershed
Monitoring activities in the San Juan Watershed.
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Sulfur Dioxide (SO2) Air Quality Standards - Documents Prior to Review Completed in 2010
Sulfur Dioxide (SO2 Secondary) Air Quality Standards - Documents Prior to Review Completed in 2012
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e-Manifest Rulemakings and Policies
New e-manifest rulemaking page to replace existing basic information page.
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The Hazardous Waste Electronic Manifest (e-Manifest) System
This is the primary hub for those seeking information about the e-Manifest system, its advisory board, and its development. Once the system is complete this area will serve as the portal into the e-Manifest system from EPA webpages.
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Drinking Water Alternate Test Procedure Program
Guidance for the modification or development of drinking water methods for compliance monitoring.
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Methods Approved to Analyze Drinking Water Samples to Ensure Compliance with Regulations
This Website provides a list of approved methods, info for regional/state labs to obtain a copy of the methods approved for compliance monitoring and method-specific contacts.