Science & Technology
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LaPlace, Louisiana - Preliminary Risk-Based Concentration Value for Chloroprene in Ambient Air
Memo providing interim recommendations for a risk-based concentration value for chloroprene.
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Limitless Potential: Keokuk, Iowa, Aims to Revitalize Old Elkem-Carbide Site
EPA's $2 million grant will help Keokuk achieve its goal of revitalizing an abandoned carbide plant, one of the largest 2023 grants offered by Region 7's Brownfields program.
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EPA completes Hurricane Helene cleanup at Douglas Lake in partnership with federal, state and local agencies
EPA completes Hurricane Helene cleanup at Douglas Lake in partnership with federal, state and local agencies
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Two TSCA Environmental Release Applications (TERAs) for Pseudomonas putida (P. Putida)
TERAs submitted by Oak Ridge National Laboratory and given the tracking designations of R-01-0003 and R-01-0004. The microorganisms will be tested at the Ravenna Army Ammunition Plant in Ohio to determine whether they can detect traces of TNT in soil.
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TSCA Environmental Release Application (TERA) for Pseudomonas putida (P. Putida)
The TERA, submitted by Oak Ridge National Laboratory, involves field trials of a modified strain of Pseudomonas putida (P. Putida). The TERA was given the tracking designations of R-00-0002.
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Upper Animas Mining District: SAP / QAPP for 2015 Sampling Events
Sampling and Analysis Plan/Quality Assurance Project Plan for 2015 Sampling Events for the Upper Animas Mining District in San Juan County, Colorado; June 2015.
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Presidential Green Chemistry Challenge: 2014 Greener Synthetic Pathways Award
Presidential Green Chemistry Challenge 2014 award winner, Solazyme, engineered microalgae to produce oils tailored to customers’ needs that can mimic or enhance properties of traditional vegetable oils.
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Presidential Green Chemistry Challenge: 1999 Designing Greener Chemicals Award
Presidential Green Chemistry Challenge 1999 award winner, Dow AgroSciences, developed spinosad, a highly selective, low-toxicity, nonpersistant insecticide made by a soil microorganism. It controls many chewing insect pests.
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Presidential Green Chemistry Challenge: 2000 Designing Greener Chemicals Award
Presidential Green Chemistry Challenge 2000 award winner, Dow AgroSciences, developed Sentricon to eliminate termites with bait applied only where termites are active; it replaces widespread applications of pesticide to soil.
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Presidential Green Chemistry Challenge: 2010 Greener Reaction Conditions Award
Presidential Green Chemistry Challenge 2010 award winners, Merck & Co. and Codexis, developed an enzymatic synthesis for sitagliptin (Januvia) that reduces waste, improves yield and safety, and eliminates a metal catalyst.
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EPA Releases Draft TSCA Risk Evaluation for Phthalate DIBP for Public Comment
EPA has released its draft risk evaluation for diisobutyl phthalate (DIBP) under the Toxic Substances Control Act (TSCA). EPA preliminarily determined that DIBP presents unreasonable risk of injury to human health and the environment.
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MARLAP Manual and Supporting Documents
MARLAP provides guidance for the planning, implementation and assessment phases of projects that require laboratory analysis of radionuclides.
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Technical Assistance Document for Complying with the Toxicity Characteristics Rule and Implementing the Toxicity Characteristic Leaching Procedure
The goal of this document is to assist the regulated community to make proper utilization of the Toxicity Characteristic Leaching Procedure (TCLP) to demonstrate compliance with the Toxicity Characteristic (TC) and Land Ban Regulations.
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Requester Withdrawal of RFR 15003A
Withdrawal by Requester of RFR 15003A; issued 12/16/2019
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EPA Response to RFC 16002; issued 05/24/2019
The response to the request for correction for ethylene dichloride (RFC #16002) issued on Friday, May 24th
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RFR 18001A – EPA Response
EPA’s response to RFR 18001A concerning Anthraquinone communicated June 10, 2020.
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15003A - Request for Reconsideration
Request for Reconsideration 15003A; letter dated 12/23/15; received 12/23/15
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EPA Response to RFC 23001- N-Methylpyrrolidone (NMP)
This page contains the Agency's response to RFC 23001- Information on the Toxic Substances Control Act (TSCA) Risk Evaluation for N-Methylpyrrolidone (NMP)
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EPA Response to RFR 14001A; issued 02/26/2016
EPA Response to RFR 14001A; issued 02/26/2016
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2022 National Lakes Assessment - Fish Tissue Study
As part of the 2022 National Lakes Assessment (NLA), the EPA conducted a study of contamination in fish from lakes to determine whether eating lake fish poses risks to human health.