Mount Diablo State Park Disposal Site - Landfill in Walnut Creek, California, USA

Mount Diablo State Park Disposal Site is a landfill facility located within Mount Diablo State Park in Walnut Creek, California, United States. It operates under the jurisdiction of Contra Costa County and is classified under NAICS code 562212 for Solid Waste Landfills. The facility is currently operational, managing municipal solid waste for the surrounding region. As a landfill in California, this facility operates under the US EPA RCRA Subtitle D regulations for municipal solid waste landfills, as well as state-level requirements from the California Department of Resources Recycling and Recovery (CalRecycle). Landfills of this type typically include systems for landfill gas collection and leachate management to mitigate environmental impacts. The specific tonnage per year for this site is not detailed in available data, but it serves a state park and nearby communities. The environmental significance of Mount Diablo State Park Disposal Site lies in its role in managing waste from the Walnut Creek area while being situated within a state park, which may require careful balancing of operational needs with natural resource protection. Proper landfill gas management and leachate control are critical to minimizing methane emissions and protecting groundwater in the region.

The landfill is located within Mount Diablo State Park, a natural area that supports diverse ecosystems. For solid waste management facilities in such settings, key environmental considerations include landfill gas collection to reduce methane leakage, leachate management to prevent groundwater contamination, and traffic impacts on local roads. The proximity to parklands may also necessitate additional measures to protect wildlife and recreational areas.