Science & Technology
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California Clean Air Technology Initiative
The California Clean Air Technology Initiative is a partnership to develop clean air technologies for the San Joaquin Valley and South Coast Air Basins through collaborative projects in technology research, development, demonstration, and deployment.
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EPA Pacific Southwest (Region 9) Laboratory Field Services Summary
EPA Region 9 summary of laboratory field services capabilities
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Air Quality Design Values
This is where EPA publishes the annual design values updates for the criteria pollutants.
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TSCA Scientific Peer Review Committees
The SACC will provide independent scientific advice and recommendations to the EPA on the scientific basis for risk assessments, methodologies, and pollution prevention measures and approaches for chemicals regulated under TSCA.
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Peer Review of the Draft Risk Evaluation for Octamethylcyclotetrasiloxane (D4)
Information about the EPA's Peer Review of the risk evaluation for octamethylcyclotetrasiloxane (D4) under the Toxic Substances Control Act.
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Water Quality Standards Regulations: Yurok Tribe
Information about water quality standards for the Yurok Tribe.
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Fireman’s Brand Spillclean® Product Bulletin
Technical product bulletin: this surface washing agent for oil spill cleanups comes in either "concentrate" or "original formula." Being a surfactant-type product, it emulsifies oil so it can then be lifted and separated from the hard surface.
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Technologies for Cleaning Up Contaminated Sites
This site provides information on characterization, monitoring, and remediation technologies as well as serves a forum for the hazardous waste remediation community through several technology information transfer initiatives and partnerships.
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Chemicals under the Toxic Substances Control Act (TSCA)
This web area will allow stakeholders to search and view centralized chemical info from various systems. This page will focus on TSCA chemical data such as health and safety studies, risk assessments and hazard characterizations.
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Water Quality Standards Regulations: Mississippi
Information related to Water Quality Standards for Mississippi.
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Risk Evaluation for 4,4'-(1-Methylethylidene)bis[2, 6-dibromophenol] (TBBPA)
EPA designated 4,4'-(1-methylethylidene)bis[2, 6-dibromophenol] (TBBPA) as a high priority chemical in December 2019 and the chemical is currently undergoing risk evaluation.
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Water Quality Standards Regulations: Kentucky
Information related to Water Quality Standards for Kentucky.
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May 6, 2005, Transportation Conformity Rule That Addresses PM2.5 Precursors
This final rule, published by EPA on May 6, 2005, adds the following transportation-related PM2.5 precursors to the transportation conformity regulations: nitrogen oxides (NOx), volatile organic compounds (VOCs), sulfur oxides (SOx), and ammonia (NH3).
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Consolidated Human Activity Database (CHAD) - Documentation for CHAD-Master
This document describes CHAD and its use.
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Memoranda Associated with the External Review Draft of Policy Assessment in the Review of the Secondary NAAQS for Oxides of Nitrogen, Oxides of Sulfur and PM
EPA's Health and Environmental Impacts Division had to make corrections to some of the risk results included in earlier drafts of the Health Risk and Exposure Assessment from the current review of ozone national ambient air quality standards (NAAQS).
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Air: Fate, Exposure, and Risk Analysis (FERA)
The technical tools found oun this technical air resources website will assist with efforts to evaluate the health risks and environmental effects associated with exposure to specific air pollutants.
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Peer Review for Evaluating HHCB, phthalic anhydride, o-DCB, and p-DCB
Information about the EPA's Peer Review of the risk evaluation for octamethylcyclotetrasiloxane (D4) under the Toxic Substances Control Act.
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News and Features
News and Features
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Children's Health Research regarding Pre-term Birth, Low Birth Weight, Birth Defects and Infant Mortality
EPA is conducting research on the effects of environmental contaminants in utero on adverse birth outcomes such as preterm birth, low birth rate, death and birth defects.
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Landfill Methane Outreach Program (LMOP)
The U.S. EPA's Landfill Methane Outreach Program is a voluntary program that works cooperatively with industry stakeholders and waste officials to reduce or avoid methane emissions from landfills. Landfill gas contains methane, a potent greenhouse gas.