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Binayak Acharya Project 2074-00101 December 21, 1994 Page 3 ' LABORATORY ANALYSES Soil samples collected from each boring at depths of approximately 10, 15, 20, 25, and 30 feet BGS (a total of ten soil samples) and one groundwater sample were analyzed for total petroleum hydrocarbons by U S Environmental Protection Agency (EPA) method 8015M and for volatile organic compounds (VOCs) by EPA method 8240 Soil analytical results, showing detected compounds P are only, resented in Table 1 Groundwater analytical results, showing detected compounds only, are presented in ' Table 2 Certified analytical results are presented in Appendix C The results of soil analyses show that petroleum hydrocarbons and VOCs were only ' detected in one soil sample boring MW-1 at 11 to 115 feet BGS Petroleum hydrocarbons, quantified as hydraulic oil and .mineral spirits, were detected in the sample at concentrations of 22,300 and 840 parts per million (ppm), respectively VOCs were ' detected in the sample ranging from 3 4 parts per billion (ppb) toluene to 910 ppb 2-chlorotoluene. Tetrachloroethene (PCE) was also detected at 113 ppb The remaining soil samples did not contain any detectable amounts of total petroleum hydrocarbons or VOCs ' The results of groundwater analyses show that no petroleum hydrocarbons or VOCs were detected in the sample from well MW-1, with the exception of 1.4 ppb chloroform ' CONCLUSIONS The results of soil analyses show that contamination is limited to the vicinity of boring ' MW-i at approximately 11 feet BGS No petroleum hydrocarbons or VOCs were detected at 15 feet in bonng MW-1 or in any of the samples from boring B-1 Boring B-1 is located approximately 25 feet from boring MW-1, indicating that there is limited lateral extent for compounds found in MW-1 at 11 feet These analytical results, when considered in conjunction with the removal of the oil/water separator and surrounding soil, indicate that there is limited soil impact Based on these results, EMCON recommends no action be taken to remediate the limited soil impact The groundwater analytical results indicate the lack of petroleum hydrocarbon and VOC impact, with the exception of a minimal concentration of chloroform (1 4 ppb) 1 Based on these results, EMCON recommends that Nestle request closure from the SJCPHS ESY/I1P7212074MIO IAX-94 lit 2