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FILE Cu" ? "i <br /> PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor - Stockton, CA 95202 <br /> 209/468-3420 <br /> B M SAMSON AUG 0 2 2000 <br /> SUTTER OFFICE CENTER <br /> 2001 UNION STREET #300 <br /> SAN FRANCISCO CA 94123 <br /> RE: 242 N. Sutter Street SITE CODE: 9327 <br /> Stockton CA 95202 <br /> APN 139-250-05 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br /> reviewed the "Evaluation of Potential Soil & Groundwater Contamination" report dated July, <br /> 2000, that was prepared by Hydro-Geo Consultants, Inc. (HCG) on behalf of the above <br /> referenced site and has the following comments. <br /> On May 22, 2000 a series of seven direct push borings were advanced on site. The borings <br /> extended to approximately 41-feet below surface grade (bsg). Soil and grab groundwater <br /> samples were collected from each boring and analyzed for petroleum hydrocarbon constituents. <br /> Results of the analyses indicate that an unauthorized release of petroleum hydrocarbon <br /> constituents has occurred at this site. Groundwater contamination was evidenced in all samples <br /> analyzed, with the most significant levels noted in the samples from the northeast corner of the <br /> site (borings A and B). Significant soil contamination in this same area extended to 40-feet <br /> below surface grade (bsg). <br /> Per California Code of Regulations, Title 23, division 3, Chapter 16, section 2724, please submit <br /> a work plan to define the vertical and lateral extent of the documented soil and groundwater <br /> contamination at this site. The work plan should include the installation of groundwater <br /> monitoring wells on-site as well as in the down-gradient direction towards the east/northeast. <br /> Submit the work plan to PHS/EHD by September 22, 2000. <br /> Please conduct a well/receptor survey for this site. Include in the survey all domestic, industrial, <br /> agricultural, municipal and other wells within a 2000-foot radius of the site. Submit the survey to <br /> PHS/EHD with the report of findings following the next phase of work completed at this site. If <br /> you have any questions or comments please call Lori Duncan at (209) 468-0337. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> (mx Gt <br /> Lori Duncan, Senior REHS Margare Lagorio, REHS <br /> LOP/Site Mitigation Unit IV Supervisor, Unit IV <br /> cc: Marty Hartzell, Central Valley Regional Water Quality Control Board <br /> a Division of San Joaquin County Health Care Services <br />