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State of California Department of Health Services <br /> Memorandum <br /> To Jim Tjosvold Date : January 28 , 1988 <br /> Senior Waste Management Engineer Subject: <br /> MC CORMICK AND <br /> BAXTER DIOXIN <br /> SAMPLING-TASK 11 <br /> From vQ <br /> Jeff Van Slooten <br /> Associate Health aterials Specialist <br /> CH2M Hill has proposed a sampling plan (dated October 1987) for <br /> chlorinated dibenzo-p-dioxins (CDD) and chlorinated <br /> dibenzo-p-furans (CDF) at the McCormick and Baxter site. The <br /> work plan states that the purpose is to evaluate the occurrence, <br /> concentration, and significance of CDD and CDF at the site. The <br /> report also states sampling is probably not necessary; however, <br /> because of DHS concerns, limited sampling will be conducted. <br /> The approach proposed by CH2M Hill is to sample areas of highest <br /> pentachlorophenol (PCP) concentrations on the site and from all <br /> discharge waters. These six areas include: <br /> 1. The track pit area composited with the track siding region <br /> 2 . The oily waste pond region <br /> 3 . Final stormwater collection point <br /> 4 . Plant wastewater effluent <br /> 5. Groundwater discharge well A-8 <br /> 6. Groundwater discharge well A-9 <br /> Plant Wastewater <br /> The Department interprets that a portion of the sampling plan <br /> objective is to also satisfy the Stockton Regional Wastewater <br /> Control Facility (SRWCF) . The Department's concern is in regard <br /> to soil and ground water contamination. The Site Mitigation Unit <br /> believes that the plant wastewater effluent does not need to be <br /> analyzed for CDD and CDF. This is because the EPA has an <br /> agreement (1986) with Vulcan, the manufacturer of PCP, on the <br /> maximum contaminant levels of CDD and CDF allowable in the <br /> product. Therefore, current maximum levels of CDD and CDF can be <br /> calculated from known discharge concentrations of PCP. <br />