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�C I <br /> Or <br /> PUBLItHEALTH SER- <br /> VICES oPo....N.. <br /> SAN JOAQUIN COUNTY <br /> r.� <br /> ENVIRONMENTAL HEALTH DIVISION y <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street • P. O. Box 388 • Stockton, CA 95201-0388 c4ZiiiiiW4" <br /> 209/468-3420 j <br /> __�Iy <br /> GEORGE LECHICH <br /> CC <br /> D <br /> P0BOX 881 <br /> STOCKTON CA 95201 <br /> RE: Valley Showcase <br /> 913 West Fremont Street <br /> Stockton, CA SITE CODE: 1114 <br /> San Joaquin County Public Health Services, Environmental Health Division has reviewed the March 1995 "Interim <br /> Assessment Report Covering Results of Soil Excavation"prepared by William J.Hunter and Associates for the above <br /> referenced site. <br /> The report briefly summarizes the site history,describes an overexcavation which was completed December 20, 1994, <br /> groundwater sampling which occurred December 21, 1994, the analytical results of all work to date, and <br /> recommendations for additional investigation and remediation. <br /> Approximately 100 yards of contaminated soil was removed from the former UST location and taken to Forward <br /> Landfill during the overexcavation.:Due to physical constraints at the site, some contaminated soil was left in place. <br /> Additional investigation as to the lateral and vertical extent of the remaining soil contamination and additional <br /> remediation of the soil was recommended in the report. PHS/EHD concurs with this conclusion. <br /> Analytical results of groundwater sampling from 1994 indicate that groundwater contamination is present only in <br /> MW-2 which is the downgradient well. The report states that the groundwater plume has been defined to the west <br /> and southeast of the site. The report recommends installation of a monitoring well downgradient of MW-2. <br /> PHS/EHD concurs with the reports conclusion that the plume has been defined in the area of MW-I and MW-3. <br /> PHS/EHD also concurs with the reports recommendation of installing an additional downgradient well. <br /> At this time PHS/EHD recommends that a workplan for additional investigation of the downgradient portion of the <br /> groundwater plume and additional investigation and remediation of soil contamination of the former UST location <br /> be submitted to PHS/EHD by May 15, 1995. <br /> For further information please contact Steven Sasson at (209) 468-3459. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> 4teven <br /> asson, Senior REHS Diane M. Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> SS <br /> ec: Wm. J. Hunter and Associates - Mr. Bill Hunter <br /> cc: SWRCB - Barbara Andersen <br /> cc: CVRWQCB - Elizabeth Thayer <br /> A Division of San Joaquin County Health Care Services <br />