Laserfiche WebLink
either laboratory contamination or natural occurrences of contaminants. <br /> There is not sufficient information available to attribute soil <br /> contamination to a specific source. <br /> An observed release of hazardous materials to nearby surface water has <br /> not been documented at the landfill. Air sampling data indicate that <br /> there is a potential for a release of hazardous materials to the air. <br /> The presence of 1,1,1-trichloroethane and methylene chloride in ambient <br /> air sampling suggests the possibility of an air release. The potential <br /> for releases to surface water and air will be covered in greater detail <br /> in HRS FACTORS--Sections 3.4 and 3.5, respectively. <br /> 3.2 WASTE TYPE AND QUANTITY <br /> Approximately 850 cubic yards of solid waste materials are accepted at <br /> the site each day (7). While a definitive characterization of waste <br /> streams has not been performed, monthly totals of wastes accepted at the <br /> landfill are recorded. The site presently accepts nonhazardous solid <br /> wastes that include residential, commercial, construction/demolition and <br /> agricultural wastes. Tires are also accepted but cannery wastes have <br /> been prohibited at CHSL since 1986. Incoming refuse is visually checked <br /> for unacceptable wastes at the front gate prior to being accepted at the <br /> facility (7). <br /> The landfill is not currently permitted to accept hazardous wastes for <br /> disposal although several sources have documented that hazardous <br /> materials have been accepted at the site in the past. A memorandum from <br /> the California Department of Water Resources (DWR) to the Central Valley <br /> Regional Water Quality Control Board (RWQCB) dated May 20, 1970 stated <br /> 1 <br /> that there was a pond of at least one acre in area located at the <br /> southwestern portion of the site that appeared to contain gas and oil <br /> drilling muds. It was feared that the pond could overflow and drain <br /> into Corral Hollow Creek (12). The DWR memo also stated that several <br /> hundred pesticide containers were located at the northwestern edge of <br /> the drilling mud pond. Photographs of DWR observations were included <br /> with the memo (12). <br /> 3-6 <br /> sa/tm/chl/si <br />