Science & Technology

2024 Appendix W Final Rule

On November 20, 2024, the EPA Administrator signed a final rule that revises the Guideline on Air Quality Models. This webpage provides the background material related to this final rule for stakeholder reference.

Podcast: The EPA Needs to Determine Whether Seresto Pet Collars Pose an Unreasonable Risk to Pet Health

EPA Requests Nominations for Panel Members and Ad Hoc Reviewers for the Science Advisory Committee on Chemicals

EPA Requests Nominations for Ad Hoc Peer Reviewers and Membership Appointment to the SACC

A Guide to Siting and Installing Air Sensors

The availability of small, lower-cost, and more portable air sensors is an exciting development for individuals and organizations interested in measuring local air quality. But finding a place to site and install that sensor is important.

Metals CRADA Phase 1 Report

This page describes aquatic life criteria and links to methodology documents.

Bioassessment and Biocriteria Program Status for Alaska: Streams and Wadeable Rivers

Biocriteria Program Status of Alaska

Contaminants of Emerging Concern including Pharmaceuticals and Personal Care Products

Both the Office of Pesticide Programs (OPP) and the Office of Water (OW) assess the effects of pesticides on aquatic ecosystems using approaches that afford a high degree of protection for aquatic life and that were developed with high quality data.

News Release: The EPA Office of Inspector General Identifies Gaps in Oversight of the Wood Heater Program under the Clean Air Act

CAA Public Input

Opportunities for the public to interact with the Clean Air Act

WDC Acquisition LLC, Solid Waste Management Unit (SWMU) 12 – Solid Waste Landfill, Creston, Union County, Iowa - Fact Sheet, February 2023

Public Comment Period for Statement of Basis and Proposed Remedy

2022 Mitigation Bank and In-Lieu Fee Program Review Workbooks and Checklists

The Mitigation Bank and In-Lieu Fee Program Review Workbooks and Checklists were developed from the materials of the National Training course for mitigation banking and in-lieu fee program interagency review teams.

Daiken America Inc. - Modification Effective Feb. 20, 2002

Permit for Daiken America, Inc. for a publicly owned treatment works (POTW) at Decatur Utilities (Dry Creek) for industrial waste from metal finishing operations.

Daikin America, Inc. - Modification Effective Jan. 01, 2003

Permit for Daiken America, Inc. for a publicly owned treatment works (POTW) at Decatur Utilities (Dry Creek) for industrial waste from metal finishing operations.

Antecedent Precipitation Tool Q&A Fact Sheet

Common questions and answers on the Antecedent Precipitation Tool

Clean Air Act Second Prospective Report Study Science Advisory Board Review, March 9-10, 2010

The subcommittee of the 812 council reviewed several materials during this meeting, including a literature review, and benefit analyses.

Benefits and Costs of the Clean Air Act 1990-2020. Supporting Technical Reports

This page contains the technical reports for the second prospective report on the Clean Air Act, including emissions, direct cost, health effects, etc.

The Benefits and Costs of the Clean Air Act, 1990 to 2010 - First Prospective Study

This Report to Congress presents the results and conclusions of our analysis of the benefits and costs of the Clean Air Act during the period from 1990 to 2010.

Benzene Case Study Final Report - Second Prospective Report Study Science Advisory Board Review, July 2009

EPA developed a methodology for estimating the health benefits of benzene reductions and has applied it in a metropolitan-scale case study of the benefits of CAA controls on benzene emissions to accompany the main 812 analysis.

Clean Air Act Second Prospective Report Study Science Advisory Board Review, May 4-5, 2010

The following materials were submitted to the section 812 Science Advisory Board (SAB) Council on Clean Air Act Compliance Analysis pursuant to their May 4-5, 2010 review meeting in Washington, D.C.

Benefits and Costs of the Clean Air Act 1990-2020. Analytical Blueprint

The blueprint includes a 211-page main document that describes EPA's plan for conducting the second prospective study and 10 technical appendices which provide in-depth documentation for particular analytical components.