Science & Technology
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Biennial Report No. 4 (Reporting Period 2010–2011)
Information related to Biennial Report No. 4 (Reporting Period 2010–2011).
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Biennial Report No. 3 (Reporting Period 2008–2009)
Information related to Biennial Report No. 3 (Reporting Period 2008–2009).
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Biennial Report No. 2 (Reporting Period 2006–2007)
Information related to Biennial Report No. 2 (Reporting Period 2006–2007).
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Biennial Report No. 1 (Reporting Period 2004–2005)
Information related to Biennial Report No. 1 (Reporting Period 2004–2005).
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World Health Organization (WHO) 1999 Guideline Values for Cyanobacteria in Freshwater
Information related to the World Health Organization (WHO) 1999 Guideline Values for Cyanobacteria for recreational waters.
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Nitrogen Dioxide (NO2) Air Quality Standards - Documents from Review Completed in 1996
Nitrogen Dioxide (NO2 Primary) Air Quality Standards - Documents from Review Completed in 1996
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EPA's Comments on U.S. Army Corps of Engineers Draft Section 404 Permit
EPA's comments to the U.S. Army Corps of Engineers on its Draft Clean Water Act Section 404 Permit to the Pebble Limited Partnership.
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How to Submit via e-PMN
This page explains the requirements and how to use the electronic premanufacture notice (e-PMN) software and central data exchange (CDX) to submit a premanufacture notice (PMN).
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Endocrine Disruptor Screening Program Documents
This page provides access to many program documents related to EDSP development and implementation.
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Partners in Pollinator Protection
Partners include USDA, states, international organizations, and stakeholders such as NGOs and bee keepers. Efforts include identifying and using best management practices to reduce honey bee exposure to dust from pesticide-treated seed.
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Endangered Species: Save Our Species Information
Endangered Species Posters
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Endangered Species: Save Our Species Coloring Book
Learn about endangered species while having fun with coloring.
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Endangered Species: Save Our Species Information - Eastern Indigo Snake
Endangered Species Eastern Indigo Snake
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EPA Region 4 Air Sensor Loan Programs
EPA R4 now loans portable fine particulate matter (PM2.5) sensors to the public. The program helps drive positive change and improve public health by collecting non-regulatory outdoor air quality data.
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Contacts for Bronx & Harlem Rivers (New York)
Contacts for the Bronx River and Harlem River Urban Waters location
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Regulatory Determination 1 Support Documents for Sodium
Sodium Support Document
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Regulatory Determination 2 Support Document for MTBE
Learn about the support document for MTBE.
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Regulatory Determination 1 Support Documents for Sulfate
Sulfate Support Documents