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• <br />• <br />Chevron Products Company IS <br />Former Chevron Service Station #9-5775, 301 West Kettleman Lane, Lodi, California June 5, 2001 <br />7 1 1 GWE Well Installation <br />A total of two (2) GWE wells will be drilled to a total depth of 85 feet bgs and completed with 6 - <br />inch stainless steel pipe at the locations shown on Figure 17 Each well will be plumbed below <br />surface grade to the extraction Imes, completed with a threaded PVC cap to allow access to the <br />wells, and protected with a watertight traffic rated well box set flush with grade <br />7 1 2 Extraction Well Piping <br />An extraction line consisting of an 8-mch diameter schedule -40 PVC will be run from the <br />remediation compound, across Kettlernan Lane (either by horizontal boring or surface trenching), <br />and to each newly installed GWE well The GWE well piping will then be plumbed into the GWE <br />system <br />7.2 Schedule <br />A detailed schedule for the completion of the work proposed as part of the FRP is presented as <br />Attachment R A brief summary is presented in the Table below <br />SCOPE OF WORK <br />Installation of Groundwater Extraction <br />Wells <br />Extraction Well Piping and Plumbing <br />System On-line <br />ESTIMATED COMPLETION, <br />'DATE* ", , <br />October 31, 2001 <br />February 26, 2002 <br />March 5, 2002 <br />"Estimated completion date based on approval of PAR/FRP by 10/08/01 <br />8.0 CONCLUSIONS AND RECOMMENDATIONS <br />• The majority of soil impact has been previously reported In the area of the former USTs. <br />Based on soil analytical data, the majority of soil impact is limited to on-site. <br />• Based on observations during drilling activities, the site vicinity is underlain primarily by <br />sandy silts, clayey silts, silty sands, clayey sands, and sands of varying amounts Numerous <br />water -bearing zones consisting primarily of sands appear from first encountered water <br />(approximately 58 feet bgs) to a depth of approximately 220 feet bgs Low permeability <br />zones were encountered at various depths and locations, but due to the presence of water at <br />varying locations in these zones, they do not appear to act as confining layers. <br />I1Chevron1957751ParFip%9-5775PARFRP2 doc <br />