Science & Technology

National Walkability Index User Guide and Methodology

A Methodology and User Guide for using the National Walkability Index, including examples illustrating the range of scores and how the index varies with the built environment.

Mobile Sources Technical Review Subcommittee Virtual Meeting, March 31, 2020

The March 31, 2020 Mobile Sources Technical Review Subcommittee meeting agenda

Biosolids Library

List of Biosolids Resources

Air Emissions Inventory Listservs

CHIEF Listserv provides updates on emission factor and inventory information via e-mail. NEI Listserv fosters communication with EPA Offices, State/Local Agencies, Tribes in preparation of the NEI

Winners of the Water Toxicity Sensor Challenge– Phase 1

EPA and partners are launching the Water Toxicity Sensor Challenge. This Challenge calls for a water sensor that can detect the activation of those toxic pathways in the presence of various harmful chemicals and natural toxins.

Phase 1 Winners of the EJ Video Challenge for Students

Phase 1 winners of the EJ Video Challenge for Students.

Innovative Ways to Destroy PFAS Challenge

This challenge asks solvers to submit detailed plans for a non-incineration way of destroying PFAS in concentrated aqueous film forming foam (AFFF), while creating the least amount of potentially harmful by-products.

Other Issues

These Frequently Asked Questions (FAQs) are intended to clarify the reporting requirements for Chemical Data Reporting for the 2016 reporting period.

Policy and Procedures for Managing Dual Use Research of Concern

The DURC and iDURC Policies require all federal departments and agencies that conduct life sciences research to implement their provisions. EPA Order 1000.19, Policy and Procedures for Managing Dual Use Research of Concern, implements both policies at EPA.

TENORM: Wastewater Treatment Residuals

Water and wastes which have been discharged into municipal sewers are treated at wastewater treatment plants. These may contain trace amounts of both man-made and naturally occurring radionuclides which can accumulate in the treatment plant and residuals.

Relative Extent, Relative Risk and Attributable Risk Calculations

PDF of the Relative Extent, Relative Risk, and Attributable Risk calcuations.

National Coastal Condition Assessment 2010 Results

Results for the National Coastal Condition Assessment 2010, including key findings, national results, and regional results.

Wadeable Streams Assessment

The Wadeable Streams Assessment (WSA) is a first-ever statistically-valid survey of the biological condition of small streams throughout the U.S.

New Hampshire - 2018 Annual Network Plans

Network plan provides framework for establishment and maintenance of air quality surveillance system for the state of New Hampshire

Life-Cycle Analysis to Support Cost-Effective Enhanced Aquifer Recharge Grant

EPA awarded $2 million in grant funding to the University of California, Berkeley for research to develop a cost-benefit tool to support enhanced aquifer recharge (EAR) as a viable, safe, and cost-effective water management strategy.

Memorandum for Reissue of Agency-wide Quality System Documents from May, 2006

This memorandum informs of the Reissue of Agency-wide Quality System Documents (QA/R2, QA/R-5, QA/G-7, and QA/G-10).

Guidance on Choosing a Sampling Design for Environmental Data Collection for use in Developing a Quality Assurance Project Plan

This document will provide assistance in developing an effective QA Project Plan as described in Guidance for QA Project Plans.