Union Oil Landfarm - Operational Landfill in Contra Costa County, California

Union Oil Landfarm is an operational landfill located in Contra Costa County, California, United States. As a solid waste management facility, it handles waste disposal for the surrounding area, operating within the regulatory framework of the US EPA RCRA Subtitle D for municipal solid waste and California's stringent environmental standards. The facility is classified under NAICS code 562212, which covers solid waste landfills. California landfills typically range from small to large scale. The facility operates under permits that require compliance with landfill gas collection and leachate management systems to mitigate environmental impacts. Union Oil Landfarm plays a role in the regional waste management infrastructure, serving communities in Contra Costa County. Its operational status indicates ongoing service, contributing to the state's waste diversion and disposal capacity. The facility's location in a seismically active region necessitates robust engineering controls for environmental protection.

The landfill is situated in Contra Costa County, California, an area with a Mediterranean climate and proximity to the San Francisco Bay. Key environmental considerations for this facility include landfill gas generation and methane leakage, which are regulated under the Clean Air Act. Leachate management is critical to protect groundwater resources, especially given the region's hydrogeology. Community proximity and truck traffic are also factors, as the facility serves a populated area.