Learn the Issues

This page shows all of the pages at www.epa.gov that are tagged with Learn the Issues.

  • 2025 California Wildfires: Story Map

    Our Story Map provides maps, photos, progress metrics and other information about EPA’s ongoing response and recovery efforts related to the 2025 Southern California Wildfires.

  • 2025 California Wildfires: EPA Staging Areas

    Information about staging areas: locations where collected hazardous materials are sorted and loaded for shipment.

  • 2025 California Wildfires: Partner Resources

    2025 Southern CA Wildfires partner resources: including LA County DPW, USACE, LA County DOH, South Coast AQMD, CA State Dept of Toxic Substances Control, and State of CA.

  • 2025 California Wildfires: News Releases

    2025 Southern California Wildfire News Releases.

  • 2025 California Wildfires: Background

    On January 7, 2025, a series of catastrophic wildfires developed in Los Angeles County. EPA is working as part of an all-of-government response to these wildfires. We are tasked with removing hazardous materials from nearly 14,000 affected properties.

  • Navajo Nation Abandoned Uranium Mines ASPECT Aerial Survey

    Results from the ASPECT aerial radiological & photo surveys of the Navajo Nation Abandoned Uranium Mine region. These documents will help EPA's efforts to characterize the level and extent of radiation at and around abandoned uranium mines (AUM).

  • 2025 California Wildfires: Fact Sheets

    Fact sheets and a public presentation about EPA's work supporting the response and recovery.

  • EPA RCRA ID: VAD062373600

    RCRA Corrective Action Cleanup Site for VAD062373600 Ashland Distribution Company in Roanoke, Virginia

  • Application Assistance: Previous Funding Opportunities

    Archive of San Francisco Bay Water Quality Improvement Fund Requests for Proposals (RFPs)

  • Discharge Monitoring Report-Quality Assurance Study Program: Frequent Questions

    Frequent questions relating to the Discharge Monitoring Report-Quality Assurance Study Program

  • 10. Where do I go for more information?

    DMR-QA resources, including fill-and-print forms, are available on  Discharge Monitoring Report-Quality Assurance Study Program web page.

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  • 9. What do I do if a laboratory receives a "Not Acceptable" result?

    If any graded test results are “Not Acceptable,” the permittee must follow up with the laboratory to determine the cause of that test result and take corrective action to prevent future occurrences. The laboratory must order retesting samples, analyze them, and write a corrective action response for the permittee. The…

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  • 8. What steps do I take after the proficiency testing?

    After laboratories report their data to the Proficiency Test (PT) Providers, the PT Provider issues a report to the laboratory and the state DMR-QA coordinator, indicating the results were "Acceptable" or "Not Acceptable". The laboratory must then forward a copy of the graded report to the permittee. The permittee subsequently…

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  • 7. Can I use a Water Pollution (WP) Study to satisfy DMR-QA requirements?

    Yes, permittees may use a WP study to satisfy some of or all the DMR-QA requirements. However, EPA will only accept graded results from WP studies that close between the stated dates given in the Permittee Instructions in the DMR-QA study package.

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  • 6. How should laboratory personnel perform DMR-QA tests?

    For all pollutant parameters, especially field test parameters (e.g., pH, residual chlorine), use the same personnel, equipment, test methods and procedures as required for NPDES compliance monitoring tests. Ensure that your test methods and procedures follow 40 CFR part 136 regulations.

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  • 5. What laboratory tests are required under DMR-QA?

    Permittees are responsible for having their laboratory(ies) test wastewater analytes that are both in their NPDES permit and included in the DMR-QA Study. For required Whole Effluent Toxicity (WET) tests, permittees must participate even if the test conditions (e.g., temperature, time of acute test, synthetic seawater matrix, etc.) in the…

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  • 4. What should permittees and laboratories do first?

    Permittees should first confirm receipt of the DMR-QA study package by the stated Address Verification deadline in the DMR-QA announcement sent by EPA. See the Address Verification form instructions in the DMR-QA package and submit the acknowledgement of receipt to the state DMR-QA coordinator via postal mail or e-mail. Permittees…

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  • 3. Where can laboratories get test samples?

    Laboratories (in-house and contract) may order the required DMR-QA Study samples from a Proficiency Test (PT) Provider accredited by the American Association for Laboratory Accreditation (A2LA) or the ANSI National Accreditation Board (ANAB). A list of chemistry, microbiology and Whole Effluent Toxicity (WET) accredited PT Providers is included in the…

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  • What You Can Do About Climate Change — Do More

    More tips for fighting climate change at home, at the office, on the road and at school.

  • What You Can Do About Climate Change — Water

    Water tips for fighting climate change at home, at the office, on the road and at school.

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