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Workplan: <br />Subsurface Exploration for Evaluation of Mid-Plume Replacement Extraction Well <br />Lodi, California <br />Page 3 <br />MEMO <br />CONCLUSION <br />Based on observations of well behavior at extraction well EW-7, a replacement well will be <br />needed to contain and convey groundwater impacted by PCE and TCE in the area downgradient <br />of the LCP to the recently constructed treatment system at 531 Church Street. The activities <br />proposed in this wokplan are intended to support the siting of a replacement extraction well for <br />that purpose. We therefore request your concurrence with the subsurface exploration activities <br />described in this workplan, such that we can proceed in an expedient manner. If you have any <br />questions, please feel free to contact us any time. <br />Attachments: <br />Figure 1 — Site Location Map <br />Figure 2 — Site Plan with Proposed Boring Locations <br />cc: Mr. Lyman Chang — City of Lodi Public Works Department <br />Mr. Andrew Richle — City of Lodi Public Works Department <br />730392342.02 NCL <br />LANGAN