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RZMO� _ <br /> F <br /> Clayton <br /> f_\llR(3'Slf lia[ <br /> (0VSI4TANTS <br /> Ms. Laurie Cotulla <br /> June 11, 1990 <br /> Page 2 <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 try the following <br /> methods: <br /> • EPA Method 503018015-8020, for TPH as gasoline and for BTEX <br /> _ • EPA Method 418.1., for total recovetable 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 laborato <br /> chain-of-custody. Detailed laboratory results are included in Attachment B Aicd by <br /> summary of these results is presented below. <br /> Sail Sam le Anal ical Results <br /> MW'1 t z t►�Vs �, t <br /> �F Ltmti o <br /> S4�QlSOtS <br /> }„d auntraiaus <br /> <uru:P . <br /> Benzene NDI ND ND ND ND ND <br /> 5 <br /> Toluene 10 ND ND ND 40 SO <br /> 5 <br /> Xylenes ND ND ND ND 460 730 <br /> 5 <br /> Eoiylbenzene ND ND ND ND 350 330 <br /> 5 <br /> TP14 as Gasoline ND ND ND ND 60,000 18,000 <br /> _ . ..200 <br /> 0 <br /> ;�C9ttC�tt�ttQtr `� <br /> Oil and Grease Y 20 30 70 ND 250 70 <br /> and Recoverable 70 mg/!cg <br /> Hydrocarbons' <br /> 13088 tYrr - ND <br /> OFganncEiiprfne, ND ND ND ND ND Variables <br /> ',�anCcn�Fatfgn € <br /> n�5lrssl <br /> • ND= of detcct� <br /> N531MAEP <br /> 1�Y' <br />