Science & Technology
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Land Application of Biosolids
Recycling biosolids through land application serves several purposes. It improves soil properties, such as texture and water holding capacity, which make conditions more favorable for root growth and increases the drought tolerance of vegetation.
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Risk Assessments for "Round Two" Focusing on Dioxins and PCBs in Sewage Sludge
Decision Not to Regulate Dioxins in Sewage Sludge that are land applied or that is incinerated or placed in sludge landfills or containment ponds.
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Sewage Sludge Surveys
Documentation for National Sewage Sludge Surveys; one conducted by EPA and the other by AMSA
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UIC Permit: PAS2R911BFOR
Pennsylvania General Energy underground injection control permit
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Health and Water Research
EPA conducts this research because waterborne illnesses continue to threaten American public health from sewer overflows and waterborne pathogens.
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Water Quality Standards Regulations: Leech Lake Band of Ojibwe
Information about water quality standards for the Leech Lake Band of Ojibwe.
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Water Quality Standards Regulations: Port Gamble S’Klallam Tribe
Information related to Water Quality Standards for Port Gamble S’Klallam Tribe.
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Methane Challenge Partnership (2016 – 2024)
Provides an overview of the EPA Natural Gas STAR Methane Challenge Program
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Impaired Waters and Nutrients
An overview of TMDLs associated with nutrients.
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Impaired Waters and Stormwater
An overview of developing and implementing stormwater TMDLs.
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Natural Gas STAR Partnership (1993 – 2022)
Natural Gas STAR Program Accomplishments
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Downloading AVERT Files for Use in SMOKE
Presentation with directions for downloading AVERT files for use in the Sparse Matrix Operator Kernel Emissions (SMOKE).
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Measuring Up: How to Track and Evaluate Local Sustainability Projects
Learn about two new federal resources to help you measure, track, and report progress, based directly on the experiences of local governments across the country, and hear from one case study taking place in northwest Washington.
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Biofuels and the Environment
This site is about the EPA Report to Congress on biofuels and includes information and links on the 2 completed reports and the new report in development in 2022.
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Exposure Factors Handbook (2011 Edition)
Exposure Factors Handbook: 2011 Edition. The Exposure Factors Handbook provides information on various physiological and behavioral factors commonly used in assessing exposure to environmental chemicals.
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About GCX Critical Loads
The CL Mapper Tool contains data from a variety of pre-existing deposition, CL, and overlay datasets.
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Application Programming Interface (API)
Application Program Interfaces at EPA including API strategy and a list of available APIs
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Grants API
The Grants API allows users to query grants data in NGGS.
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Determine Emissions Sources
Use EPA's Excel-based calculator to estimate a small business or low emitter organization's GHG emissions.
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Calculator Resources
Use EPA's Excel-based calculator to estimate a small business or low emitter organization's GHG emissions.