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4 ME <br /> i- <br /> 'F <br /> ChIN'toll <br /> - I.0 IL�OI7i�GTION , <br /> Clayton Environmental Consultants, Inc, was retained by Interland Corooration <br /> to supervise the excavation and aeration of petroleum hydrocarbon _untaminated <br /> soil at 8715 West Grant Line Road in Tracy, California (Figure I). This project <br /> was authorized by Mr. Don Lewis, Interland vice -)resident, by accepting Clayton's <br /> Proposal No. 90-8-117, dated May 20, 1990, and a supolemer_t Pro;�esal <br /> No, 29531.00, dated August 20, 1990, with their accompanying tc'•ms and <br /> conditions. <br /> The purpose of this project was to remediate the soil through excavation and <br /> aeration, and to confirm the satisfactory results with sampling and analysis. The <br /> site was restored by returning the aerated soils to the excavation pit and <br /> compacting them. Field work was completed in the week ending October 21, <br /> 1990, <br /> 2.0 KIEJXYBUMAUQLX <br /> Work at the subject site began in January 1990 when Orchard Supply Hardware <br /> (OSH) contracted Clayton to conduct a Phase I environmental assessment at this <br /> site. This assessment was performed to conduct a due diligence environmental <br /> investigation of the site prior to its transfer to OSH. The assessment revealed <br /> that an underground storage tank (UST) which contained gasoline was operated <br /> onsite and was removed in 1956. Clayton subsequently installed three monitoring <br /> wells. Soil and groundwater samples were collected from these wells, The <br /> analytical results of soil samples taken from the monitoring well bore holes are <br /> summarized in Tqble 1 below. <br /> WM Table 1 <br /> M0 torin We I Soil Sample Analytical Results <br /> 200 <br /> r�*� � MW� MK'!• MW 2 M'�� MytF 3 a mitt 44' <br /> M�� Ctf[uent { <br /> D tacbtoR <br /> 8020 Benzene . . ND• ND 1 ND ND ND ND � <br /> Toluene I r, 'ND ND ND 40 5o <br /> 5 <br /> Xylenes N^. No ND ND 460 730 5 <br /> EthylbenzeneND ND ND ND 350 330 S <br /> 8015 TPH•as ND ND ND ND 50,000 68,000 2,000 1 <br /> Gasoline <br /> 418.1 Oiland Grew& 20 30 %0 ND 250 70 10 <br /> _ -and Recoverable rim m - - <br /> - - Fig g/kg` --ml/k8 mglitg m&/�8 mog ml;/kg <br /> Hydrocarbon; <br /> 8080 Organochlorine ND ND ND ND ND ND Variables <br /> Pestiddes/PCBs <br /> TPH = total petroleum hydrocarbons <br /> PCB = polychlorinated biphenyls <br /> -I- <br />