crazy horse sanitary landfill

350 CRAZY HORSE CANYON ROAD

The 125-acre Crazy Horse Sanitary Landfill site operated as a sanitary landfill from 1966 to 2009. Prior to 1966, the site was used as an open burning dump for several decades. Reportedly, from the early 1970s to 1982, the Firestone Tire & Rubber Company disposed of large quantities of waste on the site from its vulcanizing process, which included rubber, carbon black and other fillers, oils, and mixed solvents. This material consisted of wastes containing mainly benzene and toluene. In 1987, off-site properties with contaminated wells were purchased by the City of Salinas. Approximately 6,200 people obtain drinking water from private wells located within three miles of the site. The site completed formal closure in 2014. Current monitoring for the site includes semiannual sampling of 46 groundwater monitoring wells, 8 offsite residential supply wells, influent and effluent samples from the groundwater treatment system, and the sedimentation basin. In addition, landfill gas condensate, leachate and retention basin sediment are collected annually. The EPA has deferred to the state lead agency for this site, the California Regional Water Quality Control Board, Central Coast Region, San Luis Obispo, CA.

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