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'} r08/12/n16 16:24 rad ala J1Z drat <br /> ,�TtLECQPY _MF.SSA <br /> 'T SERVICE <br /> 96 <br /> FLUOR DANIEL,GTl ��ry <br /> 1 1401 Halymrd Drive,BAR <br /> wast Sacramento.CA,95691. <br /> /9113)372470U FAX 372-8781 <br /> DATE: August 12, 1996 ' TIME: <br /> TO: Ms.Mary F.Meays� San Joaquin County Environmental Health Division <br /> :i <br /> FAK (2t}9)4B4-0138 Phone V: (209)46"337 <br /> FROM: Jaff Auchterlonle,FLUOR DANIEL GTI (West Sacramento Office) <br /> PROJECT: Southland Store ft2D304, 455 Grant Line Road,Tracy,CA <br /> ;i i <br /> SUBJECT: OWE&SVE WELIJ AND LINE INSTALLATION � <br /> NUMBER OF PAGES(including cover page):6 <br /> As we discussed over the phone today,I have attached fire figures showing the current and proposad location <br /> of the soil vapor extraction linesiand�tlre groundwater extraction lines: <br /> I <br /> 1)Stu plan showing five proposed extraction well vaults,two wells,and lateral extraction lines. � <br /> 2)Site plan detail showing I-"sting extraction line locations. <br /> 3)Section C/S1,showing GWE piping detail <br /> 4)Section[3151,showing piping and trench detail of e:dsting and future lines. <br /> I� <br /> 5)Hand sketch shouting existing and proposed GWE and SVE piping layout <br /> The attachments should clarify the layout of the existing and proposed SVE and GWE lines at the silo. <br /> Given that gasoline was releasedi�ithin the UST pit, gradient is toward the north east, and the highest <br /> opneentratiorn of dissolved hydrocarbons are found in wells MW-9 and MW-10,Fluor Daniel GTI recommends <br /> the proposed well locations shownn Figure 1, remain the sante. <br /> Installation of future soil borings or wells will be dependent on the soil and groundwater analy9cal data obtained <br /> from the two new wells and on the effectiveness of the groundwater extraction wells in awl g the water table <br /> sufficiently to allow for soil vapor extraction to be used at the site. <br /> With your approval of the work plan dated July 5,1996,Flour Daniel GTi will obtain well installation permits and <br /> move forward with the soil and grorindwaler remediation project. <br /> 4 ' <br /> Sincerely, <br /> i, <br /> 1!k:6W1S9WCYM6 01D•1AAX <br /> fp <br /> _ f <br />