Collections and Lists
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Administrative Record for the Draft CII GP
Documents Collection of Administrative Record for the Draft CII GP
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Integrated Science Assessments (ISAs)
Integrated Science Assessments are reports that represent a concise evaluation and synthesis of the most policy-relevant science for reviewing the National Ambient Air Quality Standards for the six principal pollutants.
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St. Lawrence River Area of Concern at Massena/Akwesasne
Describes history of the AOC, beneficial use impairments and sources of pollution.
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Rochester Embayment AOC - Delisted
Background information and beneficial use impairments for Rochester Embayment AOC.
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The Mystic River Watershed Initiative
See report cards for the Mystic River and read related news releases.
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EPA-approved Source-Specific Reasonably Available Control Technology
EPA-approved Source-Specific Reasonably Available Control Technology
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Dup of EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Pennsylvania SIP
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Pennsylvania SIP
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EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Pennsylvania SIP
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Pennsylvania SIP
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Regulatory Oversight of the Havasu Water Company Public Water System, Needles, CA
The Havasu Water Company (HWC) operates a public water system on the Chemehuevi Indian Reservation in Needles, California. The system relies on surface water filtration to serve approximately 360 people. EPA oversees HWC under the Safe Drinking Water Act.
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Region 4 Tribal Program
EPA resources for federally-recognized tribes within [add state list]
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Region 1 Draft New Hampshire Medium Wastewater Treatment Facility General Permit
Documents, links & contacts for the Region 1 Draft New Hampshire Medium Wastewater Treatment Facility General Permit.
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RadNet Databases and Reports
EPA’s RadNet data are available for viewing in a searchable database or as PDF reports. Historical and current RadNet monitoring data are used to estimate long-term trends in environmental radiation levels.
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Washington NPDES Permits
NPDES water permits issued by EPA in Washington.
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Idaho NPDES Permits
NPDES water permits issued in Idaho.
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Report a Real Estate Lead Disclosure Rule Concern in EPA's Pacific Southwest
Lead complaints and tips collection form for the public in AZ, CA, HI, NV, U.S. Pacific Islands and 148 Tribes.
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Public Notice Distribution List for CAA Permits in the Pacific Southwest (Region 9)
Members of the public who are interested in receiving notices and other information regarding air permits issued by EPA Region 9 (Arizona, California, Hawaii, Nevada, and 148 Tribes) may use this page to join CAA Permits e-mail distribution lists.
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Pinyon Plain Mine, Coconino County, AZ
Pinyon Plain Mine is an active uranium mine inside the Kaibab National Forest, located about 40 miles southeast of the Havasupai Reservation. In December 2023, operator Energy Fuels Resources (EFR) began actively mining the site.
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Region 1 Final New Hampshire Medium Wastewater Treatment Facility General Permit
Documents, links & contacts for the Region 1 Final New Hampshire Medium Wastewater Treatment Facility General Permit.
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Notices of Intent Archive: Noncontact Cooling Water General Permit (NCCW GP) for Massachusetts & New Hampshire
Notices of Intent Archive for the Noncontact Cooling Water General Permit (NCCW GP) in Massachusetts and New Hampshire
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EPA Approved Virginia Source-Specific Requirements
EPA Approved Virginia Source-Specific Requirements