De Garmo Pit Landfill - Sun Valley, California Solid Waste Management Facility

De Garmo Pit Landfill is an operational solid waste landfill located at 11201 Randall St, Sun Valley, California, within Los Angeles County. As a landfill in the United States, it plays a key role in managing municipal solid waste for the surrounding urban region. The facility operates under the regulatory framework of the US EPA's Resource Conservation and Recovery Act (RCRA) Subtitle D, which governs municipal solid waste landfills, and the Clean Air Act's landfill gas rules. California also enforces stringent state-level environmental standards for landfill operations, including leachate management and methane monitoring. Given its location in a densely populated area, the landfill's environmental management practices are critical for minimizing impacts on local communities and groundwater. The facility contributes to regional waste disposal infrastructure, supporting the broader solid waste management system in Southern California.

Landfills in California, such as De Garmo Pit, must address key environmental concerns including landfill gas generation (primarily methane), leachate management to protect groundwater, and community impacts from traffic and odors. The facility's proximity to Sun Valley and the Los Angeles Basin underscores the importance of robust gas collection and leachate control systems to mitigate emissions and prevent groundwater contamination.