Learn the Issues
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Resources for Small Businesses
Office of Small Business Programs under Office of the Administrator, advocates and fosters opportunities for direct and indirect partnerships.
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Minor NSR Basic Information
Provides basic information about the minor New Source Review permitting programs
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EMC: Continuous Emission Monitoring Systems
CEMS are required under some EPA regulations for either continual compliance determinations or determination of exceedances of the standards.
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Setting and Reviewing Standards to Control Lead (Pb) Pollution
Lead (Pb) standards are part of the National Ambient Air Quality Standards (NAAQS), which limit air pollution to protect health and the environment. Standards are periodically reviewed and updated, and air quality across the U.S. is measured against them.
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Setting and Reviewing Standards to Control Particulate Matter (PM) Pollution
The Clean Air Act requires EPA to set national air quality standards for particulate matter, and to periodically review the standards to ensure that they provide adequate health and environmental protection, updating those standards as necessary.
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Sulfur Dioxide (SO2) Pollution
Information on setting and implementing the outdoor air quality standards for sulfur dioxide.
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Responses to Public Comments on EPA’s Standards of Performance for Municipal Solid Waste Landfills and Emission Guidelines and Compliance Times for Municipal Solid Waste Landfills: Proposed Rules - July 2016
Responses to Public Comments on EPA’s Standards of Performance for Municipal Solid Waste Landfills and Emission Guidelines and Compliance Times for Municipal Solid Waste Landfills: Proposed Rules - July 2016
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How EPA Works with States on SIPs
How EPA with States on SIPs
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Nitrogen Dioxide (NO2) Pollution
Information on setting and implementing the primary outdoor air quality standard for nitrogen dioxide.
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National Port Strategy Assessment: Reducing Air Pollution and Greenhouse Gases at U.S. Ports
The assessment finds that air pollution at the Nation's ports can be significantly reduced by implementing currently available strategies and technologies to reduce emissions of harmful pollutants from diesel vehicles and engines.
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Vehicle Certification and Compliance Testing
The National Vehicle and Fuel Emissions Laboratory (NVFEL) tests a portion of all new cars and trucks to confirm compliance with EPA’s exhaust emissions standards, and to verify the accuracy of fuel economy test results submitted by each manufacturer.
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Tribal Solid Waste and Sustainable Materials Management in Region 10
List of available tools, technical assistance, and other resources to support Tribal solid waste implementation activities in Alaska, Idaho, Oregon, and Washington (EPA's Region 10).
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Protecting Our Oceans from Pollution
EPA Headquarters and Regional Offices work together to administer the Marine Protection Permitting Program. Regional responsibilities and Regional Marine Protection Permitting Web pages are provided.
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Air Quality
An assessment of fine particulate air pollution in the Salish Sea airshed. Part of the U.S. EPA and Environment and Climate Change Canada's Health of the Salish Sea Ecosystem Report.
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Chinook Salmon
An assessment of Chinook salmon abundance in the Salish Sea. Part of the U.S. EPA and Environment and Climate Change Canada's Health of the Salish Sea Ecosystem Report.
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Marine Species at Risk
An assessment of marine species at risk of extinction in the Salish Sea watershed. Part of the U.S. EPA and Environment and Climate Change Canada's Health of the Salish Sea Ecosystem Report.
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Bristol Bay
Information about EPA's efforts to study and protect the Bristol Bay fishery from potential impacts of large-scale mining operations.
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EPA in Idaho
Information about about EPA's work on air, water, land, and other environmental projects in Idaho.
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Air Quality Implementation Plans
States must develop plans to attain and maintain air quality standards. These plans, known as SIPs, are submitted to EPA for approval. This web site contains information about this process and the current status of the state submittals.
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Quileute Tribe Water Monitoring Program
Learn about the Quileute Tribe's water monitoring program for the Quillayute River in Washington.