Laws & Regulations
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Learn About Sulfur Dioxide Designations
Learn about sulfur dioxide designations
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Drinking Water Contaminant Candidate List (CCL) and Regulatory Determination
Learn about EPA's drinking water Contaminant Candidate List and Regulatory Determinations.
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TSCA CBI Training - Document Management
Anyone who uses TSCA CBI must obtain clearance to do so every year. Thiscourse will serve as your yearly obligatory CBI training.
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Significant New Alternatives Policy (SNAP) Program
These webpages provide information on EPA’s Significant New Alternatives Policy (SNAP) program which evaluates substitutes for ozone-depleting substances in major industrial use sectors. The SNAP program promotes a smooth transition to safer alternatives.
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Ethylene Oxide Emissions Standards for Sterilization Facilities: National Emission Standards for Hazardous Air Pollutants (NESHAP)
Learn about the NESHAP for ethylene oxide emissions for sterilization facilities. Find the rule history information, federal register citations, legal authority, and related rules as well as a rule summary.
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Subpart W Rulemaking Activity: 2017 Conference Calls
Meeting minutes from the quarterly conference call held on January 5, 2017 regarding Subpart W.
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WIPP Current Waste Site Status Summaries
View the current status of specific sites related to WIPP waste characterization, waste site audits, inspection and approval documents.
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Letters to Tribal Leaders on Revising the Assumption Regulations under CWA Section 404
EPA Acting Administrator Wheeler sent letters to tribal leaders describing current actions regarding Section 404(g) of the Clean Water Act and opportunities for input.
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Letters to the Governors on Revising the Assumption Regulations under CWA Section 404
EPA Acting Administrator Wheeler sent letters to state governors describing current actions regarding Section 404(g) of the Clean Water Act and opportunities for input.
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Monitoring Plan for Part 75 Sources
Learn about monitoring plan data, which defines relationships between stacks, pipes and units, specifies location of monitors, and identifies equipment used.
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2026 Human Health Benchmarks for Pharmaceuticals (HHB-Rx)
2026 Human Health Benchmarks for Pharmaceuticals (HHB-Rx) that are approved by the FDA and may occur in source waters (surface and groundwater) and/or treated drinking water.
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Field Audit Checklist Tool (FACT) API
FACT is a Windows desktop application intended to help auditors perform field audits. On this page, find API data for developers to use to create software or interact with an external system.
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Human Health Benchmarks
Human Health Benchmarks information on water contaminants' effects on human health, including documents and benchmarks for pharmaceuticals and pesticides.
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Re-engineering Effort
This page describes the EPA EASEY re-engineering effort.
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Status of Active Sanctions Clocks under the Clean Air Act
Memorandum clarifying language in the preamble of EPA's particulate matter implementation rule as it relates to EPA's Clean Data Policy
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Fact Sheet: Final Rule 25 - Listing of Substitutes under the Significant New Alternatives Policy Program in Refrigeration, Air Conditioning, and Fire Suppression
Section 612 provides that EPA must prohibit the use of a substitute where EPA has determined that there are other available or potentially available substitutes that pose less overall risk to human health and the environment.
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ECMPS User Guide
This page provides a guide to the CDX registration process to transition users ahead of the ECMPS 2.0 launch in 2026.
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ECMPS Beta User Guide
This page provides a guide for users of the ECMPS 2.0 beta website.
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If, during a periodic surveillance check, a custodian finds damaged thermal system insulation, what must be done under the Asbestos Hazard Emergency Response Act (AHERA)?
40 CFR part 763.90(b) states that “[i]f damaged or significantly damaged thermal system insulation ACM is present in a building, the local education agency shall: At least repair the damaged area; Remove the damaged material if it is not feasible, due to technological factors, to repair the damage; and Maintain…
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Under the Asbestos Hazard Emergency Response Act (AHERA), can someone collect more than five samples inside the asbestos abatement site and pick the best of the results for the clearance test?
No. An equal number of samples must be taken inside and outside the asbestos abatement site for clearance. The minimum number is five inside and five outside (40 CFR part 763.90(i)(3)). The asbestos-containing materials in schools rule does not prohibit the collection of more than five samples inside and an…