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is <br /> M. <br /> I'RELIMINARy I.DROGEOLOGIC ASSESSMEN REPORT <br /> 5491 7,street,Banta,California <br /> Delta Project No. 40-89-4481 <br /> Page 2 <br /> Completion of each soil boring as a monitoring well (MW-3 and MWS), <br /> r-- <br /> • Development of the monitoring wells and collection of water samples from each well. <br /> These samples were analyzed for BTEX,,EDC, EDB,and TPPH by a California-certified <br /> laboratory using EPA Method 8260. <br /> r^ <br /> Measurement of static water levels in each monitoring well on four separate events. <br /> ' Complction of slug tests in each of the four monitoring wells to determine the hydraulic <br /> conductivity of the soils at the site, <br /> • Prepare this report of our findings and.make recommendations regarding future assessment <br /> and/or remedial activities at the site <br /> r` 13 Previaas work <br /> Earth Treatment Systems,Environmental <br /> (ETS)',vas retained by Jerry Moore, of Moore Petroleum, Inc., <br /> r- to conduct a preliminary site assessment at this location. "rhe work performed by ETS resulted in the <br /> completion of a report titled 'ETS Environmental Preliminary Site Assessment",dated September 22, 1988. <br /> The information provided in the following sections,1.3.1 and 1.3.2, was obtained from this report. This <br /> site assessment consisted of drilling one soil boring and installing one monitoring welI..ETS also collected <br /> and analyzed soil and water samples from the boring and monitoring well, respectively. A summary of <br /> the work performed by ETS is presented in the following sections, j <br /> � f <br /> 1.3.1 Soil Borin and Soil Anal ical Results <br /> (. <br /> One soil boring was advanced with a hollow-stem auger to a depth of 20 feet, and completed as <br /> ' monitoringwell MW_ <br /> l.1. Soil samples were obtained with a California-modified split-spoon sampler. <br /> Figure 2 shows the location of the monitoring well. <br /> { Two soil samples were collected from the soil boring and were analyzed by a California-certified laboratory <br /> for BTEX, EDG EDB,-and-TPPH-by-EPA Method-524.2/8240.-Results of thea <br /> na es: are summarized - - - <br /> F in Table 1. laboratory reports for these soil analyses are presented in Appendix B, <br /> G <br /> � r <br />