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., <br /> �. Department of Toxic Substances Control <br /> Barbara A. Lee, Director <br /> Matthew Rodriguez 1515 Tollhouse Road Edmund G.Brown Jr. <br /> Secretary for Clovis, California 93611 Governor <br /> Environmental Protection <br /> December 21, 2015 <br /> DEC 2 8 2015 <br /> Ms. Sharron L. Reackof ----- <br /> Senior Project Manager <br /> Pacific Gas and Electric Company <br /> 3401 Crow Canyon Road, Mail Code 177D <br /> San Ramon, CA 94583 <br /> DRAFT POST-REMEDIATION SOIL GAS PROBE DESTRUCTION WORKPLAN, <br /> FORMER PG&E MANUFACTURED GAS PLANT PROPERTY, LODI, CALIFORNIA <br /> Dear Ms. Reackhof: <br /> The Department of Toxic Substances Control (DTSC) has reviewed the December 17, <br /> 2015 Draft Post-Remediation Soil Gas Probe Destruction Work plan (Work plan) for the <br /> Former Pacific Gas and Electric Company Lodi Manufactured Gas Plant (Site). The <br /> Work plan details the deconstruction of eight soil gas probes at the site. <br /> In October 2015, DTSC approved the post-remediation soil gas sampling results and <br /> issued a "No Further Action" letter for the site. The soil gas probes are no longer <br /> needed at the site. The soil gas probes will be destroyed by over-drilling the probe <br /> borehole using a direct push drill rig. The resulting borehole will be backfilled with neat <br /> cement to the ground surface using a tremie pipe. The surface at each probe location <br /> will be finished to match the surrounding surface. Prior to destruction, PG&E will obtain <br /> permits from the San Joaquin County Environmental Health Department. A well <br /> destruction letter report and California Department of Water Resources well completion <br /> report will follow the soil gas probe destruction. <br /> DTSC hereby approves the Work plan. Please contact me at (559) 297-3907 or at <br /> ieff.gymer(@dtsc.ca.gov if you have any questions regarding this matter. <br /> Sincerely, <br /> , <br /> Jeff Gymer, P.E. <br /> Hazardous Substances Engineer <br /> Brownfields and Environmental Restoration Program— Clovis Office <br /> JG:smk <br /> JG12.1215 <br />