Science & Technology

Field Temperature Measurement

Field Branches Quality System and Technical Procedures

GHGRP Metals

Overview and data highlights of 2023 metals sector emissions of greenhouse gases in EPA's Greenhouse Gas Reporting Program.

Reference Library of Water Quality Standards Policy and Guidance Documents

This page contains an index of specific EPA documents related to water quality standards, including those referenced in the Water Quality Standards Handbook.

Notification: CSB’s fiscal year 2025 compliance with the Payment Integrity Information Act of 2019

Urban Soils, Ecosystem Services, and the Application of Green Infrastructure Practices

covers soil analysis related to green infrastructure practices

Technical Approaches for the Sensor Data on the AirNow Fire and Smoke Map

The AirNow Sensor Data is located on the Fire and Smoke Map on the AirNow.gov website and is an air sensor project to monitor wildfire smoke by the EPA and US Forest Service.

What Is CHP?

Understand what CHP is, including common CHP configurations and CHP applications.

U.S. State-level Non-CO2 GHG Mitigation Report

Global Non-CO2 GHG Emissions: 1990-2030

EPA August 2011 report on global non-CO2 emissions projections (1990-2030) for emissions of non-CO2 greenhouse gases (methane, nitrous oxide, and fluorinated greenhouse gases) from more than twenty emissions sources.

Chemical Speciation Network - Sample Filter Handling, Shipment, and Gravimetric Analysis Summary Reports

Interlaboratory Performance Evaluation Comparison Results for CSN network

NO2 Monitoring - Susceptible and Vulnerable Populations

Information on the Susceptible and Vulnerable Populations NO2 Monitoring.

2003 Community Scale Air Toxics Ambient Monitoring (CSATAM) Awarded Project Plans

Copies of the 2015 project plans awarded as part of the 2017 CSATAM grants.

2025 Air Sensors Workshop

Landing page for the 2025 Air Sensors Workshop

Text Version of the Gasoline Label

Text version of the new gasoline vehicle fuel economy label displays and details.

Participate in SmartWay

This page contains information about becoming a SmartWay Partner/Affiliate and provides registered SmartWay Partners with key resources and tools.

Semi-Active Electric Diesel Particulate Filter (SEF) System

This retrofit technology is included on EPA's Verified Technologies List for Clean Diesel.

True Cost of Car Ownership

This page is overview of costs associated with car ownership: car payment, fuel, parking, maintenance and repairs, taxes, registration, depreciation, along with time lost due to traffic or looking for parking. Includes graphic highlighting these costs.

[REDACTED] ANALYTICAL DATA, MARCH 2013 SAMPLING, SDG NO. 680-88632-1.

Region ID : 04, DocID: 10944026 , DocDate: 2013-03-01

EMAIL FROM ATHENA CLARK, USGS TO ADDRESSEES. SUBJECT - FW: SOLUBILITY TEST. (12:04 PM)

Region ID: 04 DocID: 10841775, DocDate: 01-18-2012