Science & Technology

WhAEM2000 BBM Files - Soda Springs, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Soda Springs Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Sheep Creek, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Sheep Creek Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Sandpoint, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Sandpoint Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Salmon, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Salmon Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Saint Maries, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Saint Maries Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Rosalia, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Rosalia Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Rogerson, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Rogerson Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Riggins, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Riggins Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Riddle, Idaho

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Riddle Quadrangle, Idaho. Files serve as geographic basis for groundwater modeling.

Water Quality Standards Regulations: Arkansas

Water Quality Standards for Arkansas that are EPA-approved or in effect for Clean Water Act purposes.

RE: Request for Correction (RFC #11001)- Draft IRIS assessment for Halogenated Platinum Salts

Letter to Mr Randlshofer notifying that a response to RFC 11001 is taking longer than expected

State Perchlorate Advisory Levels As of 4/20/05

State Perchlorate Advisory Levels As of 4/20/05 for 8 states

Notification: Audit of the EPA’s Greenhouse Gas Reduction Fund – Solar for All Program

Update Your Member Lab Compendium Data

The Compendium of Environmental Testing Laboratories is a limited-access online database of environmental laboratories nationwide that is available to EPA; Federal, State, and local emergency responders; laboratory personnel; and water utilities.

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