HORNBROOK Landfill - Henley, California Solid Waste Management Facility

HORNBROOK is an operational landfill located in Henley, Siskiyou County, California, United States. As a municipal solid waste facility, it plays a key role in managing waste for the surrounding community. The facility is classified under NAICS code 562212, which covers solid waste landfills. Operating in California, HORNBROOK must comply with stringent state regulations, including the California Integrated Waste Management Act and the California Air Resources Board (CARB) rules for landfill gas emissions. At the federal level, it falls under the US EPA RCRA Subtitle D for municipal solid waste landfills and Clean Air Act (CAA) regulations for landfill gas collection and control. These frameworks ensure proper waste containment, leachate management, and methane reduction. The landfill's location in Siskiyou County, a rural area near the Oregon border, means it serves a relatively low-density population. Its environmental significance lies in managing local waste while minimizing impacts on nearby groundwater and air quality through gas collection systems and liner requirements.

In Siskiyou County, the landfill's proximity to agricultural and forested areas raises considerations for groundwater protection and methane management. California's strict landfill gas regulations require active gas collection systems to reduce methane emissions, a potent greenhouse gas. Leachate control is also critical to prevent contamination of local water resources. Community proximity and truck traffic are managed through operational permits and local planning.