Science & Technology

Lead at Superfund Sites: Risk Assessment

Explore EPA's methodology for risk assessment of lead at Superfund sites.

Packing, Marking, Labeling and Shipping of Environmental and Waste Samples

Field Quality System and Technical Procedures

Field Quality System and Technical Procedures for Fish Field Sampling

Field Quality System and Technical Procedures

Excel RPS Tool

This page gives a brief overview about the RPS tools and where you can find them.

2021 Emissions Modeling Platform Technical Support Document

This document describes how the emission inventories were prepared for air quality modeling by the U.S. Environmental Protection Agency (EPA) for criteria air pollutants to represent the year of 2020.

Escaped Trash Risk Map

The Escaped Trash Risk Map displays a modeled estimate of litter density across the U.S. at a snapshot in time.

Request for Reconsideration of Information Quality Act Request for Correction Regarding "Drinking Water: Regulatory Determination on Perchlorate" (RFC 12004)

Claims that the evidence used by the EPA to support its decision on RFC 12004 was not objective within the meaning of the Information Quality Act (IQA)

EPA response to RFR 19002A - Greenhouse Gas Endangerment appeal: issued 06/22/2022

EPA’s response to the Request for Reconsideration (RFR 19002A) received on March 11, 2022, regarding the 2009 Endangerment Finding for Greenhouse Gases Under Section 202(a) of the Clean Air Act.

Letter to the Information Quality Guidelines Staff, Request for Correction Regarding Drinking Water: Regulatory Determination on Perchlorate

Request for Correction: “Drinking Water: Regulatory Determination on Perchlorate

EPA Request for Correction 12004 (Exhibit B)

EPA Request for Correction 12004 (Exhibit B) (49pp) 10/8/2009
Comments in Response to the EPA Notice: EPA Drinking Water: Perchlorate Supplemental Request for Comments

EPA Request for Correction 12004 (Exhibit C)

EPA Request for Correction 12004 (Exhibit C)
National Cost Implications of a Potential Perchlorate Regulation

EPA Request for Correction 12004 - Exhibit D: Worksheet

EPA Request for Correction 12004 (Exhibit H)

EPA Request for Correction 12004 (Exhibit H)
City of Henderson: Water Quality Report 2008

Children's Health Policy and Plan

It is the policy of EPA to consider the risks to infants and children consistently and explicitly as a part of risk assessments generated during its decision making process, including the setting of standards to protect public health and the environment.