Laws & Regulations
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Performance Specification 19 - Performance Specifications and Test Procedures for Ethylene Oxide (ETO) Continuous Emission Monitoring Systems
Performance Specification 3 - Specifications and Test Procedures For O2 And CO2 Continuous Emission Monitoring Systems In Stationary Sources
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Method 327 Fugitive and Area Source Measurement of Selected Volatile Organic Hazardous Air Pollutants Using Specially Prepared Canisters
Determination of Isocyanates in Stationary Source Emissions
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Envirofacts Data Service API
Envirofacts is developing web services to facilitate the sharing of its functionality and information. All of the
services that are available within Envirofacts will be listed on this page. -
Envirofacts Data Service API (V1)
Envirofacts is developing web services to facilitate the sharing of its functionality and information. Version 1 of the Envirofacts REST Service is detailed on this page.
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TRI Statistics
The Toxics Release Inventory (TRI) contains information about more than 650 toxic chemicals that are being used, manufactured, treated, transported, or released into the environment.
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EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Texas SIP
EPA Approved Nonregulatory Provisions and Quasi-Regulatory Measures in the Texas SIP
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NPDES Permit for City of Polson Wastewater Treatment Facility in Montana
Under National Pollutant Discharge Elimination System permit number MT0020559, the City of Polson is authorized to discharge from its wastewater treatment facility located in Lake County, Montana to the Flathead River.
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NPDES Permit for MHA Interpretive Center Wastewater Treatment Facility in North Dakota
Under NPDES permit ND0031160, the Mandan, Hidatsa, and Arikara (MHA) Nation Public Works is authorized to discharge from its MHA Interpretive Center wastewater treatment facility to the Missouri River as set forth in the permit.
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NPDES Permit for Four Corners Materials' Bayfield Pit and Plant in Colorado
Under NPDES permit number CO0034665, Four Corners Materials is authorized to discharge from from its wastewater treatment facility in La Plata County, Colorado, to the Los Pinos River.
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NPDES Permit for Flathead Lake Biological Station Wastewater Treatment Facility in Montana
Under NPDES permit MT0023388, the University of Montana is authorized to discharge from its Flathead Lake Biological Station wastewater treatment facility to Flathead Lake as set forth in the permit.
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NPDES Permit for Mesa Verde National Park Wastewater Treatment Facilities in Colorado
Under NPDES permit number CO0034398, the United States Department of the Interior, National Park Service, Mesa Verde National Park is authorized to discharge from its wastewater treatment facilities in Montezuma County, Colorado.
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NPDES Permit for Jocko River Trout Hatchery in Montana
Under NPDES permit MT-0030546, the Jocko River Trout Hatchery is authorized to discharge wastewater from its fish hatchery in Lake County, Montana to to the Jocko River.
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NPDES Permit for St. Ignatius Southside Wastewater Treatment Facility in Montana
Under NPDES permit MT-0029017, the Salish and Kootenai Housing Authority of the Confederated Salish and Kootenai Tribes is authorized to discharge from its wastewater treatment facility in Lake County, Montana to an unnamed tributary of Sabine Creek.
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NPDES Permit for City of Ronan Wastewater Treatment Facility in Montana
Under NPDES permits MT-0021474, the City of Ronan, Montana is authorized to discharge from its wastewater treatment facility in Lake County to an unnamed tributary to Crow Creek.
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NPDES Permit for City of Poplar Wastewater Treatment Facility in Montana
Under NPDES permit MT0030597, the City of Poplar is authorized to discharge from its wastewater treatment facility in Roosevelt County to an unnamed tributary to the Missouri River.
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NPDES Permit for Wild Horse Hot Springs in Montana
Under National Pollutant Discharge Elimination System permit number MT0000005, Wild Horse Hot Springs is authorized to discharge from from its geothermal soaking establishment in Lake County to an unnamed tributary of the Little Bitterroot River.
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NPDES Permit for Wesco Operating, Inc., Lander Field in Wyoming
Indian Country, Minor, indust., non-discharge, permit WY-0000221 Wesco Operating, Inc., is directed to have no discharge from the Lander Field NW Discharge oil production site in Fremont County, Wyoming.
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NPDES Permit for Town of Lodge Grass Wastewater Treatment Facility in Montana
Under National Pollutant Discharge Elimination System permit number MT0021890, the Town of Lodge Grass is authorized to discharge from from its wastewater treatment facility in Big Horn County to an unnamed slough to the Little Bighorn River.
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NPDES Permit for Yellowtail Dam Wastewater Treatment Facility in Montana
Under NPDES permit MT-0022993, the U.S. Bureau of Reclamation is authorized to discharge from its wastewater treatment facility located at the Yellowtail Dam Field Office in Big Horn County, Montana, to the Yellowtail Afterbay Reservoir/Bighorn River.
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Criminal Enforcement
Information about EPA's criminal enforcement program and the cases that are investigated by Special Agents and forensic scientists