About EPA
-
Technical Guide For Addressing Petroleum Vapor Intrusion At Leaking Underground Storage Tank Sites
This document is intended for use at any site subject to petroleum contamination from underground storage tanks where vapor intrusion may be of potential concern. It is applicable to both residential and non-residential settings.
-
EPA Spreadsheet for Modeling Subsurface Vapor Intrusion
Johnson and Ettinger model
-
Background Indoor Air Concentrations of Volatile Organic Compounds in North American Residences (1990 – 2005): A Compilation of Statistics for Assessing Vapor Intrusion
This technical report presents a summary of indoor air studies that measured background concentrations of VOCs in the indoor air of thousands of North American residences and an evaluation and compilation of their reported statistical information.
-
Conceptual Model Scenarios for the Vapor Intrusion Pathway
This report provides simplified simulation examples to illustrate graphically how subsurface conditions and building-specific characteristics determine the distribution chemical distribution and indoor air concentration relative to a source concentration.
-
Indoor Air Vapor Intrusion Mitigation Approaches
The National Risk Management Research Laboratory has developed a technology transfer document regarding management and treatment of vapor intrusion into building structures. This document describes the range of mitigation technologies available.
-
Fact Sheet for Correcting the Henry's Law Constant for Temperature
This page contains the a downloadable PDF of the NAPL Model Fact Sheet for Correcting the Henry's Law Constant for Temperature.
-
Motor Vehicle Air Conditioner (MVAC) System Servicing
This site addresses efforts to control HCFC and HFC chemicals used in motor vehicle air conditioning units that may damage the stratospheric ozone or have global warming potential.
-
Tribal Environmental Information Resources
Information management capabilities that support both EPA and federally recognized tribal environmental programs.
-
MAHA Commission Unveils Sweeping Strategy to Make Our Children Healthy Again
The Make America Healthy Again Commission (MAHA Commission) today released the Make Our Children Healthy Again Strategy, a sweeping plan with more than 120 initiatives to reverse the failed policies that fueled America’s childhood chronic disease epidemic.
-
EPA Begins Hazardous Substances Removal from Former Omni Polymers Facility in Toledo, Ohio
The U.S. Environmental Protection Agency (EPA) has begun the cleanup of hazardous substances at the former Omni Polymers facility located at 1925 Nebraska Ave. in Toledo, Ohio. The cleanup is expected to be completed by spring 2026.
-
U.S. Army Corps of Engineers: Evaluation of the San Jacinto Waste Pits Feasibility Study Remediation Alternatives (August 2016)
San Jacinto Waste Pits Feasibility Study Remediation Alternatives (August 2016)
-
EPA Web Training Classes
Scheduled webinars can help you better manage EPA web content. Class topics include the updated WebCMS, creating different types of pages in the WebCMS such as events and forms, using Google Analytics, and best practices for metadata and accessibility.
-
EPA in West Virginia
Portal for news and information about EPA's efforts in West Virginia and West Virginia environmental conditions.
-
Miscellaneous Models - Documents
Miscellaneous Models Documents
-
SIP Modeling Guidance - Documents
SIP Modeling Guidance Documents
-
Preferred Models - Documents
Preferred Models Documents
-
Model Clearinghouse - Documents
Model Clearinghouse Documents
-
Meteorological Guidance
Meteorological Guidance Documents
-
EPA Releases Draft Guidance on Testing the Efficacy of Antimicrobial Pesticides Against Legionella Pneumophila in Cooling Towers
The EPA is seeking public comment on the National Marine Fisheries Service’s opinion for the insecticides carbaryl and methomyl.