Design and construction of the City of Napa鈥檚 Compost Facility improvements聽included聽a covered aerated static pile (CASP) drying system consisting聽of covered concrete bunkers with in-slab aeration piping to expedite the composting process. The project also included聽modifications to the facility鈥檚 existing stormwater management system聽through a series of earthen settling and filter ponds. The scope of work included site development, structural concrete, installation of all process equipment such as digester access doors, pipe chases, biogas upgrading skid, hydronic boiler, and flares. The project received the Dave Hardy Leadership in Organics Award in 2021 and was named Large-Scale Compost Manufacturer of the Year in 2023 by United States Composting Council.
