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CAO No. 5-00-707 • -2 - • .22 October 2003 <br /> 5400& 5606 Pacific Ave., Stockton, San Joaquin County <br /> analysis equivalent, utilizing Summa canisters, to determine whether significant soil gas contaminant <br /> rebound occurs and to provide the rationale to restart the SVE system. I recommend evaluating whether <br /> conversion of the SVE wells to a passive venting system is feasible and cost effective. <br /> I concur with the recommendation to continue operation of the AS and groundwater monitoring,which is <br /> required by the Order, as long as AS occurs in all aquifer zones. I recommend continuance of pulsing the <br /> AS system in all aquifer zones, to optimize the AS system. <br /> 2. Figure 14 and Table 1 show that all monitoring wells are non-detect for Methyl tert-Butyl Ether <br /> (MtBE) at<0.5 µg/L. The Appendix C Laboratory Report from Sequoia Analytical lists a <br /> reporting limit of 2.0 µg/L for MtBE for this quarter, which correlates to a non-detect for MtBE <br /> results of<2.0 µg/L, not<0.5 µg/L. <br />