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ENVI RONMENTAL HEALTH DEPARTMENT <br /> i <br /> SAN JOAQUIN COUNTY Unit Supervisors <br /> Carl Bergman,R.E.H.S. <br /> r.` • `"'` '% Donna K.Heran,R.E.H.S. 304 East Weber Avenue, Third Floor Mike Huggins,R.E.H.S.,R.D.I. <br /> Director <br /> " 5 Stockton, California 95202-2708 Douglas W.Wilson,R.E.H.S. <br /> . <br /> Al Olsen,R.E.H.S. Mar aret Lagorio,R.E.H.S. <br /> .PProgram Manager Telephone: (209) 468-3420 Robert McClellan,R.E.H.S. <br /> a4�%FORS` Laurie A.Cotulla,R.E.H.S. Fax: (209)464-0138 Mark Barcellos,R.E.H.S. <br /> Program Manager <br /> JAN 12 2005 <br /> SHELBY LATHROP <br /> CONOCO PHILLIPS <br /> RISK MANAGEMENT & REMEDIATION <br /> 76 BROADWAY <br /> SACRAMENTO CA 95818 <br /> RE: TOSCO/UNOCAL <br /> SITE CODE: 1217123 <br /> 4707 Pacific Avenue <br /> Stockton, CA <br /> San Joaquin County t Department <br /> ( a reviewed the <br /> "Quarterly Summary Environmental <br /> eporhird Quarter 2004" dtdOc ober19, 2004 <br /> The <br /> prepared by Secor International Inc. for the above referenced betremoved port <br /> requests that the existing soil vapor extraction (SVE) system is <br /> because recent system performance operationdataemedial technology. After indicates <br /> view of ththato E mation <br /> no <br /> longer a cost effective appof removal of the SVE equipment. <br /> and recent data EHD app <br /> The "Summary of Gauging and Sampling Activities " in the report states that the <br /> groundwater gradient and flow direction is to the southeast. This should be <br /> corrected to state that it is to the northeast as shown in figure 2 of the report. <br /> The monitoring data sheets in the report indicate that monitoring well 11 is <br /> damaged. This well must be repaired so that it is functional for groundwater <br /> sampling. Provide EHD with details on the damage to this well and how it will be <br /> repaired by March 1, 2005. <br /> If you have any questions contact me at (209) 468-3449. <br /> Donna Heran, REHS, Director <br /> Environmental Health Department <br /> Margaret Lagorio, Supervising REHS <br /> Unit IV <br /> c: SJCADA— David Irey <br /> SECOR — Clinton Harms <br /> CVRWQCB — Jim Barton <br />