Laws & Regulations

Construction Completions at National Priorities List Sites - by Site Name

View a list of NPL sites at which construction has been completed, ordered alphabetically by Site Name.

Construction Completions at National Priorities List (NPL) Sites - by Number

View a list of NPL sites at which construction has been completed, ordered chronologically by Construction Completion Number.

Close Out Procedures for National Priorities List Superfund Sites

Use this guidance for the process of accomplishing remedial action completion, construction completion, site completion, partial deletion and site deletion for NPL sites.

Background Indoor Air Concentrations of Volatile Organic Compounds in North American Residences (1990 – 2005): A Compilation of Statistics for Assessing Vapor Intrusion

This technical report presents a summary of indoor air studies that measured background concentrations of VOCs in the indoor air of thousands of North American residences and an evaluation and compilation of their reported statistical information.

Partial Deletions at NPL Sites - by State

View the list of partial deletions at NPL Sites organized by state. Use the interactive map to jump to a state or territory.

Mongoose Amine Treating Facility

MRV Plan and Decision document for Mongoose Amine Treating Facility

2018 Proposal to Revise Section 608 Refrigerant Management Regulations

Proposed Rule for the Protection of Stratospheric Ozone: Revisions to the Refrigerant Management Program’s Extension to Substitutes.

Definitions of Section 608 Terms

Provides definitions of key terms used in Section 608 of the Clean Air Act.

EPA Begins Hazardous Substances Removal from Former Omni Polymers Facility in Toledo, Ohio

The U.S. Environmental Protection Agency (EPA) has begun the cleanup of hazardous substances at the former Omni Polymers facility located at 1925 Nebraska Ave. in Toledo, Ohio. The cleanup is expected to be completed by spring 2026.

Release Date: September 9, 2025

Subpart W Rulemaking Activity: 2010 Non-Privileged Records

Non-privileged records related to Subpart W rulemaking in 2010.

AWIA Section 2013/SDWA Section 1433: Risk and Resilience Assessments and Emergency Response Plans

This presentation explains the new AWIA Section 2013 requirements and describes the EPA tools and resources available to meet these requirements.

Water Quality Standards Variances

A water quality standards (WQS) variance is a tool that states, territories and authorized tribes may use to improve water quality over time.

Town of Taos Wastewater Treatment Facility - Final NPDES Permit No. NM0024066

Town of Taos_Final NPDES Permit No. NM0024066

VILLAGE OF RESERVE - FINAL NPDES PERMIT No. NM0024163

Village of Reserve, Final NPDES Permit No. NM0024163

City of Gallup WWTP - Final NPDES Permit No. NM0020672

CITY OF ROSWELL - FINAL NPDES PERMIT NO. NM0020311

City of Roswell, final npdes permit

Pilot Travel Center#305_Final NPDES Permit No. NM0031231

Revised Total Coliform Rule Implementation Challenges

Revised Total Coliform Rule (RTCR) Implementation Challenges presentation given by Jamie Harris at the WARWS Fall Conference held in Cheyenne, Wyoming in September of 2019.

TSCA Section 5(a)(3)(C) Determination for Microbial Commercial Activity Notice (MCAN) J-18-0019 to 0021

This document describes EPA's Microbial Commercial Activity Notice (MCAN) review determination under amended TSCA for J-18-0019 to 0021.

TSCA Section 5(a)(3)(C) Determination for Premanufacture Number (PMN) P-18-0030

This document describes EPA's pre-manufacture notice review determination under amended TSCA for P-18-0030.