Science & Technology
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Aquatic Life Criteria - Copper
Background information, documents and supplementary materials related to the EPA's issuance of revised national recommended freshwater aquatic life criterion for copper (Aquatic Life Ambient Freshwater Quality Criteria—Copper 2007 Revision).
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About GCX Resilience
This page is about the METRO tool that is part of the Global Climate Explorer set of tools using an ESRI map to display the data. It was taken offline in 2021 to be released by a newer tool. See the 2017 Final Report for more details on using METRO.
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Supplementary Training Materials for Aquatic Life Criteria - Copper
Supplementary training materials developed to help states, Tribes, permittees and other interested stakeholders implement the Aquatic Life Ambient Water Quality Criteria for Copper.
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Supplementary Training Materials for Aquatic Life Criteria - Copper - Background
Background information about the supplementary training materials developed to help states, Tribes, permittees, and other interested stakeholders implement the Aquatic Life Ambient Water Quality Criteria for Copper.
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EPA Published Research Related to the Hydraulic Fracturing Study
A list of publications that will support the draft assessment report on the potential impacts of hydraulic fracturing on drinking water resources. These publications have undergone peer review through the journal where the paper has been published.
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National Recommended Water Quality Criteria from 2004
Presents national recommended water quality criteria for 120 priority and 45 non-priority toxic pollutants. Also includes criteria for 23 organoleptic effects.
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Module 1 of Quality Assurance Project Plan Development Tool, Guidance on Preparing a QA Project Plan
Contains Module 1 of a tool designed to assist in developing a QAPP for projects that involve surface or groundwater monitoring or the collection and analysis of water samples.
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RFR 21005A - Request for Reconsideration; Received 6/10/2022
RFR 21005A - Chloroprene and supporting exhibits
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EPA Response to RFC 22001 - GenX Chemicals Toxicity Assessment
EPA’s response to Request for Correction submitted on March 18, 2002 regarding the Final Human Health Toxicity Values for Hexafluoropropylene Oxide (HFPO) Dimer Acid and Its Ammonium Salt (CASRN 13252-13-6 and CASRN 62037-80-3) Also Known GenX chemicals
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Guidance for Preparing Standard Operating Procedures
Provides information about preparing standard operating procedures (SOPs).
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Toxicology Testing in the 21st Century (Tox21)
Tox21 researchers aim to develop better toxicity assessment methods to quickly and efficiently test whether certain chemical compounds have the potential to disrupt processes in the human body that may lead to negative health effects.
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Data Quality Objectives Process for Hazardous Waste Site Investigations, EPA QA/G-4HW from January 2000
Provides general, nonmandatory guidance on developing data quality objectives for environmental data collection operations in support of hazardous waste site investigations.
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Guidance for Data Quality Assessment
Demonstrates how to use data quality assessment in evaluating environmental data sets and illustrates how to apply some graphical and statistical tools for performing DQA.
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EPA Request for Correction 12004 (Exhibit G)
EPA Request for Correction 12004 (Exhibit G)
Southern Nevada Perchlorate Cleanup Project -
EPA Response to RFC; issued 02/28/2013
EPA Response to RFC; issued 02/28/2013
Agency official response to its determination to regulate perchlorate under the Safe Drinking Water (SDWA). -
June 6, 2008 EPA response to RFR: Storm Water Enforcement and Compliance: Construction
EPA response to the Request for Correction (RFR)
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August 2, 2007 RFR: Technical Report for Focus Group Recommendations, Herculaneum, MO
EPA response to the Request for Correction (RFR)
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November 12, 2008 EPA response to RFR: Technical Report for Focus Group Recommendations, Herculaneum, MO
EPA response to the Request for Correction (RFC)
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Guidance on Environmental Data Verification and Data Validation
These documents describe the EPA policies and procedures for planning, implementing, and assessing the effectiveness of the Quality System.
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How to Start Your Federal Technology Transfer Act Partnership with EPA
The process for putting an FTTA Agreement in place to start a collaborative effort with an EPA research partner.