Laws & Regulations

Water Quality Standards Regulations: Hopi Tribe

Information related to Water Quality Standards for Hopi Tribe.

Water Quality Standards Regulations: Confederated Tribes of the Warm Springs Indian Reservation of Oregon

Information related to Water Quality Standards for Confederated Tribes of the Warm Springs Indian Reservation of Oregon.

Water Quality Standards Regulations: Illinois

Information on Illinois WQS documents

Interim Recommendations for Addressing Groundwater Contaminated with PFOA and PFOS

This guidance provides interim recommendations for addressing groundwater contaminated with PFOA and/or PFOS at sites being evaluated and addressed under federal cleanup programs, including Superfund/CERCLA and corrective actions under RCRA.

Western and Central Gulf of America Offshore Oil & Gas NPDES Program

This page contains information about the Western and Central Gulf of America Offshore Oil and Gas NPDES Program.

UIC Permit: VAS2D975BBUC

UIC Class II-D injection well permit for Pocahontas Gas for the operation of T38CV.

Findings of Failure to Submit a Complete State Implementation Plan (SIP) for Section 110(a) Pertaining to the 2010 Nitrogen Dioxide National Ambient Air Quality Standards (NAAQS) Fact Sheet

This page contains the 2011 fact sheet for the Findings of Failure to Submit a Complete State Implementation Plan (SIP) for the 2010 NO2 Standard for seven states and the District of Columbia.

Lead State Implementation Plan (SIP) Checklist Guide

Guidance documents and examples to assist air quality agencies of non-attainment areas in developing plans to implement national ambient air quality standards (NAAQS), including the lead air emissions standard.

Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act

Information about the rulemaking proposal and guidance for reclassifying major sources as area sources under plain language reading of the Clean Air Act.

Carbon Tetrachloride Scope Document and Supplemental Files

scope document and supplemental files for carbon tetrachloride

TSCA Fees Table

This page contains the fee table and information on small businesses, refunds, and consortia.

1‐Hour SO2 NAAQS Implementation: Final Data Requirements Rule, Webinar Slides

This presentation helps air agencies understand how to meet requirements for reporting sulfur dioxide (SO2) concentrations in their ambient air, from identified emission sources.

Updated Guidance for Area Designations for the 2010 Primary Sulfur Dioxide (SO2) National Ambient Air Quality Standards (NAAQS)

The purpose of this memorandum is to provide information on the schedule and process for designating areas for the 2010 primary sulfur dioxide (SO2) national ambient air quality standard (NAAQS).

Findings of Failure to Submit State Implementation Plans (SIP) Required for Attainment of the 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard (NAAQS) Fact Sheet

This page contains the 2016 fact sheet for the Findings of Failure to Submit State Implementation Plans (SIPs) for 2010 Sulfur Dioxide (SO2) Standard for 11 states.

Technical Assistance Documents for Implementing the 2010 Sulfur Dioxide Standard

These documents provide technical advice on the use of modeling and monitoring to determine if an area meets the 2010 SO2 National Ambient Air Quality Standard (NAAQS).

Applying or Implementing Sulfur Dioxide Standards

Along with developing the SO2 standards themselves (part of the National Ambient Air Quality Standards, or NAAQS), EPA also develops requirements for how to apply or implement them, and work toward about attaining and maintaining those standards.

Sulfur Dioxide State Implementation Plan (SIP) Checklist Guide

Tools, guidance, and examples to assist air quality agencies of non-attainment areas in developing plans to implement national ambient air quality standards (NAAQS), including the sulfur dioxide (SO2) air emissions standard.

2010 1-Hour Sulfur Dioxide (SO2) Primary National Ambient Air Quality Standards (NAAQS) Implementation Guidance Documents

The following documents are Agency non-binding guidance documents and fact sheets relating to the implementation of the 2010 1-Hour SO2 Primary NAAQS.

SO2 Data Requirements Rule State Source List Submittals - Region 3

List from states in EPA Region 3 identifying sources to be characterized under the sulfur dioxide (S02) Data Requirements Rule (DRR) and EPA's responses.

SO2 Data Requirements Rule State Source List Submittals - Region 4

List from states in EPA Region 4 identifying sources to be characterized under the sulfur dioxide (S02) Data Requirements Rule (DRR) and EPA's responses.