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.a:-,. _��'; �� -�"'' � �� -�J :..,n: � -- .amu, •�' �=` �P �- '� ."� _e �i <br /> Obtain well installation permits front San Joaquin County. Obtainpermission <br /> to drill one well at the adjacent Mainland Nursery property. <br /> Establish final well locations based on utility checks by AT&T site personnel. <br /> Drill, install,survey and sample three monitoring wells in the location of the <br /> former .ank excavation. Field logs are presented in Appendix A. <br /> - Submit soil and ground-water samples to be analyzed by a California-certified <br /> analytical laboratory for Total ExtractaWe Hydrocarbons (TEH, or diesel) <br /> using DHS Method 3550/8015-Modified, and for Benzene, Ethyibenzene, <br /> Toluene, and Total Xylenes (BETX) using EPA Methods 5030/8020. <br /> Analytical results are presented in Appendix B. <br /> Prepare this Site Asse,,sment Report, to comply with requirements set forth <br /> by the Regional Board (1989x). The report is being submitted to AT&T and <br /> to San Joaquin County for review. The report contains copies of relevant <br /> documents, as requested by San Joaquin County, to expedite site review and <br /> closure (Appendix Q. <br /> 2,2 Previous Work 1987 b <br /> Four underground diesel fuel storage tanks on site were removed on February Y <br /> Beaver construction of Downeyville under the supervision of Sacramento Equipment <br /> Maintenance (SEM). During routine tank removal sampling, detectable levels of diesel <br /> fuel were found in the soil. Kleinfelder and Associates (Kleinfe)der) performed the soil <br /> ation w <br /> sampling during over-excavithin the former tank area. Kleinfelder's report of the <br /> -excshow the location of soil samples within the <br /> sampling activities a, Appendix C) <br /> ri cation soil <br /> excavation to verify removal of soil with diesel. � oratory detectable levels of Total Petroleum <br /> yses of ve fi <br /> samples SS-03, SS-04, SS-06, and SS-07 showed n <br /> ' <br /> Hydrocarbons (TPH) and Benzene, Ethylbenzene,Toluene, and Total Xylenes (BETX). <br /> AT&T-Lodi <br /> Site Assemmcnt Report <br /> 4 3anuary 1491 <br />