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investigation, there were reports of a plugged or broken sewer line by the property <br /> . occupant As more information becomes available regarding this issue, it will be <br /> reported to PHS/EHD <br /> SOIL, ANALYSES <br /> During drilling, soil samples were collected at five-foot intervals for geologic logging and <br /> laboratory analysis Each sample was screened in the field for volatile emissions using an <br /> organic vapor analyzer (OVA) Based on these readings and field observations, soil samples <br /> were selected for laboratory analysis A total of 28 soil samples were selected for analysis of <br /> total petroleum hydrocarbon (TPH) and benzene, toluene, ethylbenzene, and xylenes (BTEX) <br /> by EPA methods 8015/8020 All analyses were performed by Smith-Emery Laboratories of Los <br /> Angeles, California Procedures used for soil sampling are presented in Appendix C <br /> Results of laboratory analysis show that the highest concentrations of hydrocarbon are present <br /> in well VWC located,lust south of the tank cluster Up to 21,000 mg/kg TPH was detected in <br /> these sods at 30 feet below grade High concentrations (600 mg/kg or greater) were detected <br /> between 20 and 45 feet below grade in this well Soil samples from wells VWA and VWB each <br /> had 2 4 mg/kg TPH or less in every soil sample except for one This sample (VWB-48) <br /> contained only 23 mg/kg TPH Unsaturated soil samples from wells MW7 and MW8 did not <br /> contain significant levels of hydrocarbon with a maximum TPH concentration of 0 54 mg/kg <br /> detected These results are presented in Table 1. The analytical data is presented in Appendix <br /> D including chain of custody and method detection limits <br /> Page 5 <br />