Science & Technology

Adverse Outcome Pathway Wiki

The Adverse Outcome Pathway (AOP) Wiki serves as the primary repository of qualitative information for the international AOP development effort coordinated by the Organisation for Economic Co-operation and Development (OECD).

SeqAPASS User Guide

User Guide on how to use SeqAPASS version 4.0.

21st Annual EPA Drinking Water Workshop: Summaries and Biographies

Biographies and summaries for the 21st annual EPA Drinking Water Workshop, 2024

CRM435

Craters of the Moon National Monument and Preserve (CRM435) CASTNET site location,

CHC432

Chaco Culture NHP (CHC432) CASTNET site location,

CHA467

Chiricahua National Monument (CHA467) CASTNET site location,

CDZ171

Cedar Creek (CDR119) CASTNET site location,

CAV436

Carlsbad Caverns National Park (CAV436) CASTNET site location,

CAN407

Canyonlands National Park (CAN407) CASTNET site location,

Memo: Sensitivity Analysis of Long-term Mean PM2.5 Concentrations for Selected Long-term Exposure Epidemiological Studies

Memo describing sensitivity analysis of long-term mean PM2.5 concentrations in support of the PM NAAQS review

Memo: Corrections to Relative Humidity Values Used in the Draft UFVA, Corrected Graphics, Tables, and Availability of Detailed Data File for Current Conditions

Memo describing corrections to values in the draft urban-focused visibility assessment in support of the PM NAAQS review

Memo: Re-analysis of the relationship between 24-hour and 4-hour visibility index levels

Memo describing the relationship between 24-hour and 4-hour visibility index levels in support of the PM NAAQS review

Memo: Updated comparison of 24-hour PM2.5 design values and visibility index design

Memo describing an updated comparison of 24-hour PM2.5 design values and visibility index design values in support of the PM NAAQS review.

Historical Water Quality Criteria Documents

Reference Documents from the 1980s

Case Studies: Using Bioassessment as Evidence of Damage and Recovery following a Pesticide Spill

this is case studies

2017 Draft Aquatic Life Criteria for Aluminum in Freshwater

EPA has released draft updated aluminum aquatic life ambient water quality criteria for freshwater under Section 304(a)(1) of the Clean Water Act. EPA will accept public comments on the draft criteria for 60 days upon publication in the Federal Register.

National Recommended Water Quality Criteria Tables

This water quality criteria table has all current national recommended water quality criteria and links to relevant documents

Common Effects Methodology National Stakeholder Meeting December 1, 2010

EPA is exploring how to build on the substantial high quality science developed under both OPP programs to develop additional tools and approaches to support a consistent and common set of effects characterization methods using best available information.

Human Health Criteria - Methylmercury

Documents pertaining to 2010 Human Heath Water Quality Criteria and Guidance Implementation for Methylmercury. These document include the safe levels for Methylmercury to protect human health.

Reference Library of Water Quality Criteria

Information related to Water Quality Criteria Reference Library