Overview
San Dimas 490 is an operational landfill in San Dimas, California, serving the Los Angeles County area. It manages municipal solid waste under US EPA RCRA Subtitle D and state regulations.
San Dimas 490 is an operational landfill located at Arrow Highway and San Dimas in San Dimas, California, within Los Angeles County. As a solid waste management facility, it serves the surrounding communities by providing disposal capacity for municipal solid waste. The facility operates under the regulatory oversight of the US Environmental Protection Agency (EPA) and the California Department of Resources Recycling and Recovery (CalRecycle). The landfill is classified under NAICS code 562212 (Solid Waste Landfill) and is subject to federal regulations including RCRA Subtitle D for municipal solid waste landfills and Clean Air Act requirements for landfill gas management. In California, landfills must comply with stringent state standards for liner systems, leachate collection, groundwater monitoring, and gas control to minimize environmental impacts. San Dimas 490 plays a key role in the regional waste management infrastructure of Los Angeles County, one of the most populous counties in the United States. The facility's location in a semi-arid climate with proximity to residential areas necessitates robust environmental controls, particularly for landfill gas emissions and leachate management, to protect local air and water quality.
Environmental context
The landfill operates in a semi-arid Mediterranean climate typical of Southern California, where water resources are scarce and groundwater protection is critical. Proximity to residential communities in San Dimas requires careful management of odor, traffic, and potential methane migration. Leachate generation is relatively low due to low rainfall, but the facility must maintain a comprehensive groundwater monitoring network to detect any potential contamination from the landfill liner system.
Frequently asked questions
San Dimas 490 is located at Arrow Highway and San Dimas in San Dimas, California, within Los Angeles County, United States.
As a municipal solid waste landfill, San Dimas 490 accepts household and commercial waste, subject to local and state regulations.
The landfill operates under US EPA RCRA Subtitle D for municipal solid waste landfills and Clean Air Act regulations for landfill gas. California state regulations add requirements for liners, leachate management, and groundwater monitoring.
Landfills in California are required to install gas collection and control systems to capture methane and reduce emissions. San Dimas 490 likely operates such a system to comply with state and federal air quality standards.
Landfills can impact air quality through methane emissions and local communities through odor and traffic. California's strict regulations aim to minimize these impacts through gas collection, leachate treatment, and groundwater monitoring.
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