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w <br /> Clavton <br /> Ms. Laurie Cotulla <br /> June 11, 1990 <br /> Page 2 <br /> ANALYTICAL FINDINGS <br /> Methods used to analyze soil and groundwater samples from the three monitoring <br /> wells onsite were selected to establish a baseline environmental condition at the site, <br /> and to assess soil and groundwater for possible contamination from (1) the former <br /> UST, (2) USTs upgradient of the subject property, and (3) the possible previous use <br /> of pesticides onsite. The soil and groundwater samples were analyzed by the following <br /> methods: <br /> EPA Method 503018015-8020, for TPH as gasoline and for ETEX <br /> EPA Method 418.1, for total recoverable petroleum hydrocarbons and oil and <br /> grease <br /> • EPA Methods 8080 (soil) and 608 (water) for organochlorine. <br /> pesticides/polychlorinated biphenyls (PCBs) <br /> All samples were transported to Clayton's State-Certified laboratory, accompanied by <br /> chain-of-custody. Detailed laboratory results are included in Attachment B. A <br /> summary of these results is presented below. <br /> Soil Sample Analytical Results <br /> t.kiait ur <br /> MW I <br /> UW... <br /> i N i411�f2 MtiV 3 ItiiV4 3 13aiutlaa <br /> 1?PF►i4fCthnd .. . 6'. 11K . S 5' >.1BS':..', ,.. fl!.' pglk&• <br /> 5030JS0i5.8tl2(I <br /> concentrations : :` <br /> Benzene ND- NO ND NO NO No 5 <br /> Toluene 10 NO NO ND 40 50 5 <br /> Xylenes NO ND NO NO 460 730 5 <br /> Effivlbenzene NO NO NO ND 350 330 5 <br /> 'ITH as Gasoline ILND I ND NO ,tD .000 VA.000 2000 <br /> Al 01 IN <br /> t <br /> �cau��raatan: <br /> Oil and Grease 20 30 7R, ND 250 70 10 mg/kg <br /> and Recoverable <br /> Nvdrocarbons <br /> 8080 Ear NO ND ND NO ND NO Variables <br /> Orgarsoehtoivic .� ;. <br /> Pes[indest?CBs <br /> :_, (raacentraaou <br />