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a7rdr!1f�05 10;37 2094683433 <br /> ` EHD PAGE 03 <br /> page 2,441 W.Charter Way <br /> In the Work Plan UR5 proposed the surface completion with traffic rated, flush m <br /> well vaults of the SVI=IAS wells. During a phone conversation on September 2, 2005ed <br /> URS requested on behalf of the Property <br /> below grade, further stating that thein locations would be mapped and they SVE/AS Wells be would ed <br />{ accessible for Proper would be <br /> p per destruction from the surface. In the Addendum URS proposes these <br /> wells will be destroyed by pressure grouting through the remediation <br /> common treatment system compound area. SJC/EHD does notapprove rg located in the <br /> destruction. For proper destruction, the top of the wells must be exposed to the surfacef <br /> and the method appropriate for site conditions must be used, be it pressure grouting with <br /> mushroom cap or Complete overdrilling. <br /> URS did not provide justification for the other changes to the Work <br /> Plan at they <br /> the Addendum. These changes include the installation of an additional tr}oundw ter <br /> made in <br /> monitoring well, art additional dual completed SVE/AS well, and the change in location of <br /> the SVE/AS network of wells. SJC/EHD cannot approve <br /> F Work Plan "hoot explanation,justification or demonstration ion that he sed changes <br /> n ess ofthe <br /> e <br /> r corrective action would not be compromised by the changes, e <br /> If you have any questions please call Lori Duncan at(209)488-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> Lori Duncan, Senior REHS <br /> LOP/Site Mitigation Unit IV Nuel C. Henderson, Jr.. PG <br /> LOP/Site Mitigation Unit 1V <br /> cc: .lames Barton, PG, CVRWQCB <br /> Vern Elart <br /> h, PG, URS. <br /> t <br /> �t <br /> r <br />