ARCHIVED REPORTS_XR0012728 - Laserfiche WebLink

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j Chevron U.S.A. - Page 4 and hydrogeologic conditions in the vicinity of the subject p.':operty were used to help evaluate and assess possible subsurface contamination conditions in subsoils and ground water at the subject property. The scope of services included the completion of the following tasks: y Research and review of pertinent, readily available geologii and hydrologic >. literature and review of available previous investigatian reports; .� o Obtaining any necessary permits prior to the commencement of the field portion of the investigation; as o Drilling and sampling of su?soils for chemical analysis; o Installation, development and sampling or a gi,und nater monitoring %ells; o Chemical analysis of ground wpter samples to detect the presence and concentration of ,pe;:roleum constituents; o Preparing a report to present our findings and general conclusions. `r~ 4.Q TECHNICAL APPROAC& j Eased upon the information provided to this office regarding the subject Property, coupled with the review of the published ground water data and review of previous investigations at the subject property, the following technical approach was employed to evaluate contamination conditions at the subject property. A total of 3 exploratory soil borings were advanced at the subject property at the locations-shosrn,on the Site Plan vhich'is included as Plate 2 tf this r report. The purpose of those soil borings was to provide data regarding the subsurface conditions and to instail ground Fater monitoring wells. Field screening of the subsoils samples with and Finu photoionization detector was DAIME5 s h4oaK ,tip;