Learn the Issues
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NE Fremont Street Green Street Project
Stormwater retrofit of an existing residential collector street – demonstration project.
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NPDES SSO FAC Documents
Series of documents by the Urban Wet Weather Flows Federal Advisory Committee providing review and analysis of water quality issues.
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Pollutants in Publicly Owned Treatment Works Pretreatment Standards; 40 CFR Part 128 Pretreatment Standards
Documents related to pollutants in publicly owned treatment works pretreatment standards; 40 CFR part 128 pretreatment standards.
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Pesticide Applications Training Documents
A collection of PowerPoint presentations from previous webinars.
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Memorandum of Understanding on Copper Mitigation in Watershed and Waterways
Copper-free brake pad agreement between EPA, states, and automotive industry representatives.
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NPDES PGP Regulatory History Documents
A collection of NPDES Pesticide General Permit regulatory history documents.
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NPDES PGP eNOI Tutorials
EPA has developed tutorials to walk you through the process of submitting NOIs, NOTs and Annual Reports.
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Pesticide General Permit Sources of Information for NMFS Listed Resources of Concern
This document provides information on the National Marine Fisheries Service (NMFS) listed resources of concern species, including the species location.
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NPDES Water-Quality Based Permit Limits for Recreational Water Quality Criteria
This set of Frequently Asked Questions (FAQ) provides an overview of NPDES permitting applicable to continuous dischargers.
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National Pretreatment Program Industrial User
Various memos on categorical pretreatment standards.
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National Pretreatment Program Approval Authority Documents
EPA provides the following guidance for approval authorities to use in reviewing, approving, and assessing POTW pretreatment programs.
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Previous Versions of EPA's MSGP documents
Documents related to Multi-Sector General Permits prior to 2015.
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NPDES AFOs Policy Documents
AFOs policy documents that include a national strategy, regulatory definitions, and policy statements.
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Construction Rainfall Erosivity Waiver Fact Sheet
Fact sheet for determining construction rainfall erosivity waiver requirements.
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NPDES CAFOs Regulatory Documents
NPDES CAFOs regulatory documents
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Managing Manure Nutrients at CAFOs
This document is designed to supplement EPA's previous guidance by providing additional technical information on how to carry out EPA's revised regulatory requirements for NPDES permitting of CAFOs.
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2012 Good Samaritan Memorandum
Documents related to the good samaritan initiative to restore watersheds and fisheries.
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NPDES Permit Writers' Manual for Concentrated Animal Feeding Operations
This manual is designed to provide general information on the CWA and NPDES requirements for CAFOs, explain CAFO permitting, and provide technical information to understand options for nutrients management planning.
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Beneficial Uses of Manure and Environmental Protection
The Beneficial Uses of Manure and Environmental Protection is a two-page outreach piece developed with agriculture industry organizations.
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How to Access the 2012 CGP eNOI System Documents
Instructional documents for the accessing the 2012 CGP electronic Notice of Intent (eNOI) system.