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Page 2,515 Charter Way • <br /> The site map included in the Report has been modified to indicate there are three <br /> underground storage tanks associated with this site. Please explain the addition of a <br /> waste oil tank to the map. Is this a recently discovered tank, or has it already been <br /> removed? <br /> In the QMR Shaw recommends discontinuing analysis of groundwater samples for methyl <br /> tertiary butyl ether (MtBE), and adding analysis for total petroleum hydrocarbons as diesel <br /> for a period of one year (four quarters). SJC/EHD agrees with and approves these <br /> recommendations. In addition, Shaw states in the cover letter of the report that they <br /> expect to restart the existing SVE remediation system sometime this year. SJC/EHD <br /> does not agree with restarting the SVE system unless it can be shown that the system is <br /> still an effective system and that restarting it in it's existing configuration would help <br /> remediate the remaining contamination. During the years that the SVE system operated it <br /> appeared to have little impact on the concentration of contaminants in the groundwater. <br /> Time and resources at this site should be focused on remediation of the contamination <br /> that remains in the groundwater and submerged impacted soil. <br /> Please proceed with submittal of a feasibility study for remediation of the petroleum <br /> hydrocarbon contamination at this site. The feasibility study is due for submittal to <br /> SJC/EHD no later than December 15, 2006. <br /> If you have any questions please call Lori Duncan at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> Lori Duncan, Senior REHS Nuel C. Henderson, Jr., PG <br /> LOP/Site Mitigation Unit IV LOP/Site Mitigation Unit IV <br /> cc: James Barton, CVRWQCB <br /> Dan Wynne, Shaw <br />