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PUBLIC hEALTH SERVYCES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION r. <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer y•. '. <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 (CIO <br /> LID <br /> ARTHUR BARBOUR <br /> WELLS FARGO BANK APR 1 a 19197 <br /> 11 SUTTER STREET <br /> SAN FRANCISCO CA 94163 <br /> RE: WELLS FARGO BANK PROPERTY SITE CODE: 506077 <br /> 49 S WILSON WAY <br /> STOCKTON, CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has completed the review of the "Additional Phase 11 Subsurface Investigation" report <br /> dated April 1997, submitted by Building Analytics, and offers the following comments for <br /> your consideration. <br /> Please be advised that you were directed to investigate the tank system formerly located <br /> at this site because the groundwater contamination found in monitoring well #5 could not <br /> reasonably be assigned to any other identified source. You are not being required to <br /> investigate your site as a source to contamination found at the 101 and 102 S. Wilson <br /> Way sites. The sources of the contamination found at those sites have been identified <br /> as the tank systems formerly located at each respective site. <br /> The data presented in the report does not definitely rule out the former tank system at <br /> this site as the source of the contamination found in monitoring well #5. Additional soil <br /> investigation in the presumed area of the former tank system should be proposed and <br /> implemented. As the exact location of the former tank system may be difficult to <br /> determine, this scope of work may require more borings than if the location were known. <br /> However, these borings are necessary to complete this investigation. <br /> Please submit to PHS/EHD an addendum to the original work plan to further investigate <br /> the area of the former tank system at this site. <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 /> Site Mitigation Unit <br /> c: CVRWQCB - Beth Thayer <br /> c: Building Analytics -Jan Schutze <br /> A Division of San Joaquin County Health Care Services <br />