Learn the Issues
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When are You Required to Report an Oil Spill and Hazardous Substance Release?
Describes the requirements for reporting an oil spill or hazardous chemical release.
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Aggregating a substance located in multiple processes
Under 40 CFR Part 68, if multiple processes at a stationary source contain the same regulated substance, must the amounts of the substance in the individual processes be aggregated to determine whether a threshold is exceeded? No. Applicability of the risk management program requirements is based upon the presence of…
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NFPA 4 Criteria
A stationary source has a mixture above the threshold. At standard temperature and pressure, the mixture does not meet the criteria for a National Fire Protection Association flammability rating of 4 (NFPA 4). At elevated temperatures and pressures, however, the mixture meets the NFPA 4 criteria. Is this process covered…
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City of Philadelphia, Pennsylvania
The EPA is providing notice of a proposed Administrative Penalty Assessment against the city of Philadelphia, who owns and/or operates the Southwest Water Pollution Control Plant, a publicly owned treatment works, located at 8200 Enterprise Ave., Philadelp
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Factsheet: Recommended Binational Phosphorus Targets to Combat Lake Erie Algal Blooms
Great Lakes Water Quality Agreement Nutrients Annex Subcommittee
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Voluntary Guidelines for Methamphetamine and Fentanyl Laboratory Cleanup
Provides technical guidance for state and local personnel responsible for meth lab cleanup, as required by Methamphetamine Remediation Research Act of 2007.
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Everglades REMAP Fish Mercury Bioaccumulation Modelling Report
Everglades Mercury bio-accumulation
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City of Philadelphia, Pennsylvania - Clean Water Act Public Notice
The EPA is providing notice of a proposed Administrative Penalty Assessment against the city of Philadelphia, who owns and/or operates the Southwest Water Pollution Control Plant, a publicly owned treatment works, located at 8200 Enterprise Ave., Philadelp
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Star Lake Canal Superfund Site Community Meeting, April 21, 2025
Information about an EPA and TCEQ community meeting for the Star Lake Canal Superfund site in Port Neches, TX, on April 21, 2025.
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Open House for Tar Creek Superfund Site, April 2025
Information about the annual event on April 10, 2025. Representatives from federal, state, and Tribal agencies will be available to answer questions, provide resources, and give updates on the work being performed at the Tar Creek Superfund site.
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Clean Air Action Section 303 - Limetree Bay
Read the Limetree Bay Clean Air Action Section 303 order.
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The Frank R. Lautenberg Chemical Safety for the 21st Century Act
The new law includes much needed modernizations to TSCA, the only major piece of environmental legislation that had not been updated since it was passed in the fall of 1976.
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Assessment Tools for Biotechnology Products Request For Application (RFA) and Informational Webinar for Potential Applicants
Informational webinar for new RFA Assessment Tools for Biotechnology Products
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New Funding Opportunity: National Priorities: Innovative Sampling Designs for Public Health Surveillance of Coronaviruses and Other Pathogens in Wastewater Request for Applications (RFA) and Informational Webinar
Webinar to discuss the the funding opportunity and how to apply.
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EPA Interim Evaluation of 2016-2017 Milestone Progress in the Chesapeake Bay Watershed
This page provides the EPA interim evaluations of the 2016-2017 milestones for the Chesapeake Bay TMDL. These interim assessments provide a mid-point check on the progress made on the 2016-2017 milestones, recognizing the achievements made in 2016.
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Air Quality Information for International Audiences
This web area will describe the interconnected components of the air quality management system and provide links to additional information, tools, data, examples and resources.
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Environmental Concerns of Communities around Ambler, Pennsylvania
This site provides history, current information, collaborative projects, removal/remedial work in and around the Ambler area, and will serve as a forum for audiences to learn and possibly exchange ideas on asbestos research and development in the area.
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EPA Begins Sixth Review of City Disposal Corp Superfund Site
EPA is conducting a five-year review. This is the sixth five-year review of City Disposal Corp Superfund Site.
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Hurd Field Porous Pavement Education Project
Learn more about background and benefits of the Hurd Field Porous Pavement Education Project. See a photos from the project. Get additional resources on porous pavement.
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About the Charles River
Learn about the Charles River watershed and the historical timeline of the river