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PUBLIC* HEALTH SEPVICES >oea .r <br /> SAN JOAQUIN COUNTY °z <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer .. r.• <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> NICK NICKERSON OCT 10 Z��t <br /> UNOCAL CORPORATION <br /> 8788 ELK GROVE BLVD <br /> BLDG 3 SUITE 15 <br /> ELK GROVE CA 95624 <br /> RE: Former Unocal Service Station #0187 <br /> 437 E. Miner <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed 'Interim Remedial Action Test Report and Additional <br /> Subsurface Assessment Work Plan" dated August 28, 2001, prepared by Gettler- <br /> Ryan Inc. for the above referenced site. PHS/EHD agrees with <br /> recommendations in the report that propose installation of additional on site C- <br /> Sparge wells, installing C-Sparge wells off site and installing an additional off site <br /> groundwater monitoring well. A work plan for installation of these wells should be <br /> submitted to PHS/EHD by December 3, 2001. <br /> The chemical analytical report from the laboratory for the July 31, 2001, water <br /> samples from NP-1-22, NP-1-65, NP-1-111, NP-2-20, NP-2-60 and NP-2-116 <br /> were not included in the report. This data should be submitted to PHS/EHD <br /> immediately. <br /> Dot Lofstrom R.G. has resigned from San Joaquin County and I am now <br /> providing oversight for this site. Please address all future correspondence to me. <br /> If you have any questions contact me at (209) 468-3449. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Supervising REHS <br /> Unit IV <br /> C: CVRWQCI3 — Marty Hartzell <br /> Gettler Ryan — Greg Gurss <br /> A Division of San Joaquin County Health Care Services <br />