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Page 11 Cabral-McAdams Property October 16,2006 Job No. 1828-092.02 The surface soil sample collected at location S17 was analyzed for organochlorinated pesticides. Organochlorinated pesticides were not detected at concentrations above laboratory reporting limits in this sample with the exception of 4,4'-DDE, 4,4'-DDD, 4,4'-DDT, and chlordane which were detected at low concentrations (well below established regulatory agency screening levels). The surface soil sample collected from the location S17 was analyzed for TPH as gasoline, TPH as motor oil, and TPH as diesel. Only TPH as motor oil was detected within this sample at a concentration of 400 mg/kg. Area D Surface soil samples collected at locations S18 through S23, and S36 through S41, as well as the one foot deep soil samples collected from locations S18, S19, and S22 were laboratory tested for lead and arsenic. Concentrations of lead identified in the soil samples collected from these locations ranged from 4.3 mg/kg to 110 mg/kg. Arsenic concentrations identified in these samples ranged from less than 2.0 mg/kg to 16 mg/kg, except for the surface sample collected at location S 18,which contained 1,700 mg/kg. The surface soil samples collected at S18 through S20, and S22 and S23 were laboratory combined into three-part and two-part composite samples, respectively, and analyzed for organochlorinated pesticides. Surface soil samples from locations S36, S40, and S41 and S32 through S35, and soil collected at a depth of one foot at locations S18 and S19 also were analyzed for organochlorinated pesticides. In general, concentrations of organochlorinated pesticides were not detected in any of the surface soil samples at concentrations above laboratory reporting limits with the exception of 4,4'-DDE, 4,4'- DDD, 4,4'-DDT, and chlordane which were detected in the composite samples at low concentrations and well below established regulatory agency screening levels. Laboratory analysis of the one foot soil samples collected at locations S18 and S19 did not reveal any organochlorinated pesticides at concentrations above laboratory reporting limits. The three-part and two-part composite samples of surface soils from the locations S18 through S23 and the surface soil sample from location S21 were analyzed for one or more of the following: TPH as gasoline, TPH as motor oil, and TPH as diesel, and BTEX. Only TPH as motor oil was detected within these samples at concentrations above laboratory reporting limits. TPH as motor oil was reported at concentrations of 140 mg/kg for the three part composite sample (from locations S 18 through S20). ENVIRONMENTAL SCREENING EVALUATION GENERAL The Federal Environmental Protection Agency has established Preliminary Remediation Goals (EPA-PRGs) of chemicals commonly found in soil and groundwater at contaminated sites. The California Environmental Protection Agency also has