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2002 Soil Sampling In May 2002, LNC requested that I collect soil samples from the soil stockpile and determine if the soil could be removed to an offsite disposal site. I collected eight soil samples on May 13, 2002,at the locations depicted on Figure 2. The soil samples were submitted to Kiff Analytical LLC, (Kiff) of Davis, California for analysis. The soil samples were analyzed for TPH-mo and THP-d using USEPA Test Method 8015M and for Total Reportable Petroleum Hydrocarbons (TRPH)using USEPA Test Method 418.1. In addition,the samples were submitted through Kiff to Calscience Environmental Laboratories Inc. (CEL), Garden Grove, California, for analysis of CAM-17 metals. Copies of the analytical laboratory reports are presented in Appendix 1. Volatile organic compounds were not analyzed because as previous soil sample analytical laboratory results had not indicated their presence. Soil sample analytical reports indicated that the stockpile had petroleum hydrocarbon concentrations on May 13,2002 as follows: TPH-mo (850 to 2000 mg/kg); TRPH(290 to 790 mg/kg) (Table 1). No TPH-d was detected in the samples. A summary of the metals in the soil samples is presented in Table 2. CAM-17 metals were all reported to be below Total Threshold Limit Concentrations that would define hazardous waste (Table 3). 2006 Soil Sampling On January 9, 2006 and January 18, 2006 the soil stockpile was inspected and soil samples were collected. Pictures of the stockpile are shown in Appendix 2. Soil samples were collected as 4- point composite samples at three locations in the stockpile (Figure 2). The soil samples were analyzed for TPH-mo and TPH-d using USEPA Test Method 8015M. All of the soil samples were analyzed for VOCs using USEPA Test Method 8260B. Soil sample analytical results reported that the stockpile had petroleum hydrocarbon concentrations that ranged as follow: TPH-d(42 to 570 mg/kg); TPH-mo (140 to 1,300 mg/kg) (Table 1). These same soil samples were analyzed using USEPA Test Method 8260B for a full- scale of volatile organic compounds. No VOCs were detected above analytical method detection limits. A summary of the metals in the soil samples is presented in Table 2. CAM-17 metals were all reported to be below Total Threshold Limit Concentrations that would define hazardous wash (Table 3). Copies of the analytical laboratory reports are presented in Appendix 1. DAEnvironmentaI\LCN\LCN103.wpd 3