Science & Technology
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Proposed Revisions to Method 202
EPA is proposing the following revisions to Method 202: Revisions to the procedures for determining the systematic error of the method, which is used to correct the results of the measurements made using this method; Removes some procedural options to
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What EPA Does With the CCL
Learn what EPA does with the CCL
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Appeal to RFC: Federal Data Quality Act Petition Against Further Dissemination of 'Climate Action Report 2002
Submitted by Competitive Enterprise Institute
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EPA response to RFC: Federal Data Quality Act Petition Against Further Dissemination of 'Climate Action Report 2002
EPA response to the Request for Correction (RFC)
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EPA response to RFC: Request for Correction of Information Pursuant to Office of Management and Budget and Environmental Protection Agency Information Quality Guidelines
EPA response to the Request for Correction (RFC)
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2025 National Enforcement Investigations Center - Environmental Technical Summit
Announcement page for the NEIC 2018 Technology Summit including registration information.
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EPA Lead (Pb) Research
EPA researchers are providing the science and technology the Agency needs to take actions that reduce lead exposures.
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RFC 21005 – Chloroprene
RFC 21005 Chloroprene, Denka, Request for correction, Toxicological Review of Chloroprene, CAS No. 126-99-8, IRIS,
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Fluid Column and Flow Borehole Methods
fluid column and flew borehole logging
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Nuclear Borehole Geophysics
nuclear borehole geophysics
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Physical and Imaging Borehole Methods
borehole geophysics imaging and physical methods
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Magnetic Susceptibility Borehole Logging
Borehole Magnetic Susceptibility
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Natural Gamma and Spectral Gamma Borehole Logging
Natural and spectral gamma borehole logging
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Decision Support
Geophysical Decision Support Tools
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Electrical Conductivity and Resistivity
Inversion is a post-processing step, where geophysical parameters can be transformed to geologic data, existence of oil, minerals, and water content
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Waterborne Geophysical Methods
Magnetic methods measure the earth’s total magnetic field at each measurement location.
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Basic Information about the Emission Standards Reference Guide for On-road and Nonroad Vehicles and Engines
The page contains overview information on mobile sources, EPA's approach to regulating the emissions from mobile sources, and the vehicle/engine certification process.
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RFC 18003 - OAR MON RTR Rulemaking
This action finalizes the residual risk and technology review (RTR) conducted for the Miscellaneous Organic Chemical Manufacturing source category regulated under national emission standards for hazardous air pollutants (NESHAP).
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RFC 21002 - Carbon Tetrachloride
This is a Request for Correction Risk Evaluation for Carbon Tetrachloride; EPA-HQ-OPPT-2019-0499