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1 <br /> ti <br /> detector (PID) Sample tubes were immediately sealed at each end using Teflon tape and plastic <br /> 1 end caps, labeled, and placed on ice Subsequent to sample collection, the soil borings were <br /> grouted to the surface with a neat cement grout Drill cuttings were placed in a covered 5-gallon <br /> 1 bucket and stored on site pending disposal <br />' In general, two soil samples were collected from each boring for submittal to Argon Laboratories <br /> in Ceres, California (Certification No 1873) using chain-of-custody documentation The samples <br />' were analyzed for TPHg and BTEX by EPA methods 8015 (modified) and 8020, respectively In <br /> addition, one vadose zone soil sample from boring SB-9 and two saturated zone soil samples from <br />' borings SB-7 and SB-9 were submitted to PTS Laboratories, Inc of Santa Fe Springs, California <br /> using chain-of-custody documentation for analysis of geophysical parameters Copies of chain-of- <br /> custody records and laboratory reports are contained in Appendix II <br /> During advancement of the borings, groundwater samples were collected from borings SB-8 and <br /> SB-9 using a stainless steel bailer in order to further define the lateral extent of groundwater <br /> contamination on site Due to time constraints, a groundwater sample was not collected from <br /> 1 boring SB-10 In addition, a sheen/floating product was observed on the groundwater in boring <br /> SB-7 The groundwater samples were submitted to Argon Laboratories using chain-of-custody <br /> 1 documentation for analysis of TPHg, BTEX, total petroleum hydrocarbons as diesel (TPHd), and <br /> methyl tertiary butyl ether (MTBE) by EPA methods 8015 (modified) and 8020 Copies of chain- <br /> of-custody records and laboratory reports are contained in Appendix II <br /> 1 RESULTS OF INVESTIGATION <br /> Site Geolosv <br /> 1 Site boring logs and sediments encountered while drilling indicate that the shallow soil beneath the <br /> site is consistent with soil encountered in previous borings on-site Soil beneath the site generally <br /> 1 consists of silt and clay However, poorly graded, fine grained sand was encountered in boring <br /> SB-10 from 14 feet bgs to the bottom of the boring Groundwater was encountered in the <br /> 1 <br /> • w W4334*epotts\sumryrpt.doc 4 <br /> 1 <br /> • <br /> 1 <br /> SMTH <br />