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Mr. Robert McClellon <br /> February.9, 2006 <br /> Page 2 of 4 <br /> ® labeled in the field with sample name and location, date, and the sampler's initials. The samples <br /> were temporarily stored in an ice chest refrigerated to a temperature of approximately 4° C and <br /> delivered under chain of custody protocol to Argon Analytical, Inc. (DHS cert. #2359). Mr. Frank <br /> Girardi, San Joaquin County Environmental Health Department (EHD) was present to witness the <br /> excavation and sampling. Field notes including a site sketch showing the sample locations are <br /> included in attachment A. <br /> LABORATORY ANALYSIS <br /> To characterize the nature of the waste, the composited samples were analyzed for the following <br /> constituents: <br /> 1. Total petroleum hydrocarbons as diesel (TPHd) and gasoline (TPHg)using EPA Method 801513; <br /> 2. Volatile organic compounds (VOCs)by EPA 826013; <br /> 3. Semivolatile organic compounds (SVOCs)by EPA 8270C; <br /> 4. Polychlorinated biphynols (PCBs)by EPA 8080A <br /> 5. CAM 17 metals by EPA 6010B (mercury by EPA 7471). <br /> Analytical results are summarized in Table 1, and a copy of the laboratory reports including chain of <br /> custody documentation, are included in Attachment B. <br /> DISCUSSION OF RESULTS <br /> Total Petroleum Hydrocarbons <br /> No TPHd or TPHg were detected in the composite sample. <br /> Volatile Organic Compounds <br /> No VOCs were detected in the composite sample. <br /> Semivolatile Organic Compounds <br /> Only two analytes from the SVOCs analysis were detected in the composite sample. Bis(2- <br /> ethylhexyl) phthalate (DEHP) was detected at 2.6 millgrams per kilogram (mg/kg) and Di-n-octyl <br /> phthalate was detected at 1.9 mg/kg, which are well below their respective preliminary remedial <br /> goals (PRGs) of 35 mg/kg and 2,400 mg/kg, established by the U.S. EPA. <br /> Polychlorinated biphynols <br /> Only two analytes from the PCBs analysis were detected in the composite sample. Aroclor 1242 was <br /> detected at 0.076 mg/kg and Aroclor 1260 was detected at 0.038 mg/kg, which are well below the <br /> PRG of 0.22 for the most hazardous PCBs. <br /> Metals <br /> Various metals were detected in the composited samples, most of which were well below their <br /> respective PRGs and hazardous waste designation levels. However, lead was detected at 200 mg/kg, <br /> G:\GROUNDZE\Palomino\soilpileresult2—wp.doc <br />