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i • <br /> Draft Limited Phase II Site Investigation <br /> Austin Road-SR 99 Van Till Property Acquisition BCI File No. 2643.x <br /> Manteca California October 23, 2013 <br /> Sample Analysis <br /> BCI submitted 10 soil samples to SunStar for the following analyses: <br /> • Title 22 Metals (CAM 17) including arsenic and lead using EPA Test Method 6010B <br /> • Organochlorine pesticides(OCP)using EPA Test Method 8081A <br /> BCI submitted one (1) soil sample to SunStar for the following analyses: <br /> • TPH Diesel,Motor Oil using EPA Test Method 8015B <br /> • TPH Gas/BTEX, Oxygenates using EPA Test Method 8260B <br /> SunStar performed Quality Assurance/Quality Control (QA/QC)procedures for each method of <br /> analysis. Laboratory QA/QC procedures include Method Blanks and Spiked Samples. <br /> Analytical Results <br /> Laboratory testing results are as follows: <br /> • All samples were non-detect for OCP. <br /> • All samples were non-detect for total arsenic. <br /> • Two samples resulted in non-detect levels for lead. Eight samples had total lead <br /> concentrations above the detection limit of 3.0 mg/kg. Total lead ranged from ND to 25 <br /> mg/kg with an average value of 7.67 mg/kg. <br /> • All sample results for the CAM 17 metals including lead are within the range of expected <br /> natural background levels for these elements.l <br /> • TPH results are non-detect. <br /> • Laboratory quality control results were within acceptable limits. <br /> • Summarized laboratory results are included in Appendix A <br /> • Complete laboratory results as well as chain-of-custody documents are included in <br /> Appendix B <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Pesticides/Heavy Metals <br /> OCPs were not detected. Heavy metal concentrations are consistent with background levels. We <br /> conclude that no further assessment is warranted for the pesticides and/or heavy metals evaluated <br /> in this report. <br /> ADL <br /> We analyzed groups of data based on sample depth as well as the sample population as a whole. <br /> Table 1 summarizes the total lead results for soil samples from "A6" samples(0 to 6"bgs) and <br /> 1 Background data from KEARNEY FOUNDATION SPECIAL REPORT—Background Concentrations of Trace <br /> and Major Elements in California Soils,Kearney Foundation of Soil Science,Division of Agriculture and Natural <br /> Resources,University of California,March 1996. <br /> 3 <br />