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2010-09-24
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Wastewater Treatment Project (West Side) Environmental Impact Statement, Glacier National Park, Montana
Notices
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United States
Department of the Interior
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United States Government Agency or Subagency
United States
National Park Service
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United States Government Agency or Subagency
Under the provisions of the National Environmental Policy Act, the National Park Service is preparing an environmental impact statement for the Lake McDonald/Park Headquarters Wastewater Treatment System Rehabilitation for Glacier National Park. This statement will be approved by the Intermountain Regional Director. The existing system collects throughout the Lake McDonald/ Headquarters area via a series of gravity sewer lines and sewage lift stations and force mains. The existing wastewater treatment facility is comprised of a single cell aerated lagoon, irrigation pond, control building and spray irrigation system. At the wastewater treatment facility, raw wastewater flows to a 4.8 million gallon aerated lagoon where bacteria reduce the biological oxygen demand (BOD) and suspended solids concentration of the wastewater. The treated wastewater flows to an adjacent .5 million gallon irrigation pond where an irrigation pump takes flow from the pond to a 55 acre spray irrigation field, currently located in the 100 year floodplain of McDonald Creek. This project and EIS has been proposed to analyze alternatives for addressing these issues. The effort will result in a proposed course of action for park managers to address the issues above. A range of alternatives are being considered to improve the existing wastewater treatment facility incorporating different disposal and treatment approaches. A variety of factors will be considered including an evaluation of site constraints, State of Montana Department of Environmental Quality current standards, available treatment technology, operation and maintenance concerns, wildlife, water quality and vegetation concerns and sustainable design. Several alternatives will look at upgrading and rehabilitating the existing treatment process while continuing to utilize the existing spray irrigation system as the method of disposal. Others will consider removing the existing system from the floodplain. The use of advanced nitrogen removal treatment by utilizing sequencing batch reactors (SBR) prior to discharge to the groundwater through rapid infiltration basins will be considered. Due to the uncertainty of the suitability of the soils for rapid infiltration basins, another alternative will also be considered which is based on discharge of the effluent to the Middle Fork of the Flathead River and would involve construction of a tertiary treatment plant. A no action alternative will also be considered as required. Major issues include that due to the location of the spray irrigation field, wastewater cannot be discharged during the winter and spring when the ground surface is frozen, saturated or underwater from stream flooding. As a result, the wastewater treatment facility operates as a holding facility during the winter and spring until ground conditions at the spray field allow disposal without runoff to McDonald Creek. In addition, the system needs to be rehabilitated enabling it to operate as it was originally designed to operate. An open house has been scheduled for October 26 to be held at the Community Building in West Glacier from 3:00 pm to 7:00 pm.
64 FR 56215
https://www.govinfo.gov/app/details/FR-1999-10-18/99-27119
99-27119
fr18oc99-61
4310-70-P
https://www.govinfo.gov/app/details/FR-1999-10-18/99-27119
https://www.govinfo.gov/content/pkg/FR-1999-10-18/html/99-27119.htm
https://www.govinfo.gov/content/pkg/FR-1999-10-18/pdf/99-27119.pdf
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64 FR 56215
Wastewater Treatment Project (West Side) Environmental Impact Statement, Glacier National Park, Montana; Federal Register Vol. 64, Issue
NOTICE
99-27119
DEPARTMENT OF THE INTERIOR
National Park Service
4310-70-P
99-27119
Notice of intent to prepare an environmental impact statement for the Wastewater Treatment Project (West Side), Glacier National Park.
Under the provisions of the National Environmental Policy Act, the National Park Service is preparing an environmental impact statement for the Lake McDonald/Park Headquarters Wastewater Treatment System Rehabilitation for Glacier National Park. This statement will be approved by the Intermountain Regional Director. The existing system collects throughout the Lake McDonald/ Headquarters area via a series of gravity sewer lines and sewage lift stations and force mains. The existing wastewater treatment facility is comprised of a single cell aerated lagoon, irrigation pond, control building and spray irrigation system. At the wastewater treatment facility, raw wastewater flows to a 4.8 million gallon aerated lagoon where bacteria reduce the biological oxygen demand (BOD) and suspended solids concentration of the wastewater. The treated wastewater flows to an adjacent .5 million gallon irrigation pond where an irrigation pump takes flow from the pond to a 55 acre spray irrigation field, currently located in the 100 year floodplain of McDonald Creek. This project and EIS has been proposed to analyze alternatives for addressing these issues. The effort will result in a proposed course of action for park managers to address the issues above. A range of alternatives are being considered to improve the existing wastewater treatment facility incorporating different disposal and treatment approaches. A variety of factors will be considered including an evaluation of site constraints, State of Montana Department of Environmental Quality current standards, available treatment technology, operation and maintenance concerns, wildlife, water quality and vegetation concerns and sustainable design. Several alternatives will look at upgrading and rehabilitating the existing treatment process while continuing to utilize the existing spray irrigation system as the method of disposal. Others will consider removing the existing system from the floodplain. The use of advanced nitrogen removal treatment by utilizing sequencing batch reactors (SBR) prior to discharge to the groundwater through rapid infiltration basins will be considered. Due to the uncertainty of the suitability of the soils for rapid infiltration basins, another alternative will also be considered which is based on discharge of the effluent to the Middle Fork of the Flathead River and would involve construction of a tertiary treatment plant. A no action alternative will also be considered as required. Major issues include that due to the location of the spray irrigation field, wastewater cannot be discharged during the winter and spring when the ground surface is frozen, saturated or underwater from stream flooding. As a result, the wastewater treatment facility operates as a holding facility during the winter and spring until ground conditions at the spray field allow disposal without runoff to McDonald Creek. In addition, the system needs to be rehabilitated enabling it to operate as it was originally designed to operate. An open house has been scheduled for October 26 to be held at the Community Building in West Glacier from 3:00 pm to 7:00 pm.
Superintendent, Glacier National Park, 406/888-7901.
Federal Register
Vol. 64, no. 200
Office of the Federal Register, National Archives and Records Administration
1999-10-18
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