West Valley Disposal (Timbercove) Landfill, Nicasio, California | Solid Waste Management Facility

West Valley Disposal (Timbercove) is an operational landfill located in Nicasio, California, within Marin County. As a solid waste management facility, it handles municipal solid waste disposal for the surrounding communities. The facility operates under the regulatory framework of the US EPA RCRA Subtitle D, which governs municipal solid waste landfills, and complies with California's stringent environmental standards. The landfill is classified under NAICS code 562212, which covers solid waste landfills. Typical operations include waste placement, compaction, and daily cover. Landfills in this region often manage tens of thousands of tons annually. The facility likely employs modern liner and leachate collection systems to protect groundwater, as required by federal and state regulations. Located in a rural area of Marin County, the landfill serves a community that values environmental stewardship. Proper management of landfill gas and leachate is critical to minimize methane emissions and protect local water resources. The facility's operational status indicates ongoing service to the region's waste management needs.

The landfill is situated in a seismically active region with Mediterranean climate, requiring careful design for stability and leachate control. Proximity to groundwater and nearby communities necessitates robust methane collection and leachate management systems to prevent air and water pollution. Marin County's environmental regulations add further oversight.