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The Ahwahnee and Wawona Hotel Restaurant - Replace Grease Traps
Yosemite National Park » The Ahwahnee and Wawona Hotel Restaurant - Replace Grease Traps » Document List
The purpose of this project is to replace one grease trap at the Wawona Hotel, and one grease trap at the Ahwahnee. These grease traps have been identified as deficient for various reasons in the National Park Service (NPS) Grease Management Plan and in the 2011 Draft Preliminary Design Report - Grease Interceptor Study/Design.
WAWONA: The existing trap at Wawona Hotel is undersized at 1,500 gallons and does not adequately prevent grease from entering sanitary sewer line. It was installed in 1984 and is located underground in the back dock area of the Wawona Hotel kitchen. The Draft Preliminary Design Report recommends replacing this with a 2,500 gallon interceptor in the same location. Ground disturbance will occur during construction in this area that was pre-disturbed when the existing trap was installed in 1984. The approximate extent of ground disturbance is 14 feet wide x 25 feet long x 10 feet deep. Park Archaeology and Anthropology have been consulted on this project and have provided guidance for appropriate mitigation measures. Archaeological and cultural resource monitoring will take place during ground disturbing activity.
AHWAHNEE: The existing trap at The Ahwahnee is a 4,000 gallon interceptor that is undersized. It will be replaced with a 6,000 gallon interceptor. Ground disturbance will occur during construction in this area that was pre-disturbed when the existing trap was installed, and most recently with the NPS lift station construction in the same area. The approximate maximum extent of ground disturbance is 10 feet wide x 35 feet long x 10 feet deep. A cleanout and connections to existing plumbing will also occur for this project. Replacement of this interceptor is subject to the National Historic Preservation Act. Park Archaeology and Anthropology have been consulted on this project and have provided guidance for appropriate mitigation. Archaeological and cultural resource monitoring will take place during ground disturbing activity.
Vehicular access to structures and small staging areas will occur on paved surfaces. All fill used on this project will be certified weed-free and ground disturbing equipment will be washed and inspected by NPS prior to park entry.
WAWONA: The existing trap at Wawona Hotel is undersized at 1,500 gallons and does not adequately prevent grease from entering sanitary sewer line. It was installed in 1984 and is located underground in the back dock area of the Wawona Hotel kitchen. The Draft Preliminary Design Report recommends replacing this with a 2,500 gallon interceptor in the same location. Ground disturbance will occur during construction in this area that was pre-disturbed when the existing trap was installed in 1984. The approximate extent of ground disturbance is 14 feet wide x 25 feet long x 10 feet deep. Park Archaeology and Anthropology have been consulted on this project and have provided guidance for appropriate mitigation measures. Archaeological and cultural resource monitoring will take place during ground disturbing activity.
AHWAHNEE: The existing trap at The Ahwahnee is a 4,000 gallon interceptor that is undersized. It will be replaced with a 6,000 gallon interceptor. Ground disturbance will occur during construction in this area that was pre-disturbed when the existing trap was installed, and most recently with the NPS lift station construction in the same area. The approximate maximum extent of ground disturbance is 10 feet wide x 35 feet long x 10 feet deep. A cleanout and connections to existing plumbing will also occur for this project. Replacement of this interceptor is subject to the National Historic Preservation Act. Park Archaeology and Anthropology have been consulted on this project and have provided guidance for appropriate mitigation. Archaeological and cultural resource monitoring will take place during ground disturbing activity.
Vehicular access to structures and small staging areas will occur on paved surfaces. All fill used on this project will be certified weed-free and ground disturbing equipment will be washed and inspected by NPS prior to park entry.