The project encompasses two properties: a former Class II-2 non-hazardous solid waste landfill and a parcel previously used for storage of trucks, trailers, equipment, scrap material, and debris related to a demolition business and for servicing trucks. The latter site was also underlain by fill material containing construction debris and minor waste materials. The landfill has been shown to contain combustible landfill gas and low concentrations of asbestos.
Final closure of the landfill and configuration of the site for development was completed in 2002 and required extensive grading, along with the excavation and onsite relocation of waste material to raised landfill areas. An impervious hard clay cap was placed over the entire landfill, followed by a foundation layer of compacted soil material, a layer of compacted low-permeability soil, and a layer of compacted vegetative soil. This upper vegetative layer was later hydroseeded. In the development area, additional general fill was placed to construct building pads and to accommodate construction of utility trenches above the landfill cap.
Since 2002, only minor repairs to the upper vegetative layer of the cover have been necessary due to erosion from winter storm runoff. Prior to development, vegetative cover was well established at the site.
The project encompasses two properties: a former Class II-2 non-hazardous solid waste landfill and a parcel previously used for storage of trucks, trailers, equipment, scrap material, and debris related to a demolition business and for servicing trucks. The latter site was also underlain by fill material containing construction debris and minor waste materials. The landfill has been shown to contain combustible landfill gas and low concentrations of asbestos.
Final closure of the landfill and configuration of the site for development was completed in 2002 and required extensive grading, along with the excavation and onsite relocation of waste material to raised...