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Former Electro Delta Page 2 <br /> 821 South Wilson Way January 28, 2008 <br /> Stockton, CA 95205 <br /> recommendation. The installation of one SVE well and one observation well in the vadoze zone <br /> of the former UST location would be adequate for performing an SVE pilot test. <br /> The Report also recommends installation of additional monitoring wells at the site. By letter <br /> dated February 1, 2006, EHD concurred with installation of a shallow screened monitoring well <br /> as well as a deeper screened monitoring well in hydrogeologic unit 3 identified in the October <br /> 2005 site assessment report. These wells should be placed down-gradient of the former UST <br /> area between B6 and CPT3 locations. In addition, a shallow screened monitoring well should <br /> be placed south to southeast of MW3 to investigate the lateral extent of the groundwater <br /> contamination found in MW3. <br /> A work plan for the installation of an SVE well, observation well and additional monitoring wells <br /> and performance of a vapor extraction pilot test should be submitted to the EHD by March 10, <br /> 2008. <br /> If you have any questions, please contact Margaret Lagorio, Program Coordinator, at (209) <br /> 468-3449. <br /> Margarf et�agorio, RE Nuel Henderson, PG <br /> Program Coordinator Engineering Geologist <br /> ML/nh <br /> cc: Mr. James Barton, CVRWQCB, 11020 Sun Center Drive #200, Rancho Cordova, <br /> CA, 95670 <br /> Mr. Chris Miller, Advanced GeoEnvironmental Inc., 837 Shaw Road, CA 95215 <br /> LOFM21 S WILSON WAYAd <br />