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PUBLIC HEALTH SERVICtS 'OpOUI y <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION ` <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> c w <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95 "c,FoaN <br /> 209/468-3420 � ( !I <br /> JAN 0 5 2000 <br /> HAROLD 6 DENA KNOWLES HOEK BROTHERS <br /> C/O PATRICK RIDDLE DON ROEK <br /> 7574 SHORELINE DR PO BOX 30038 <br /> STOCKTON CA 95219 STOCKTON CA 95213-0038 <br /> RE: ROEK PROPERTY WORKPLAN, 102 SOUTH WILSON WAY SITE CODE: 9031 <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) has reviewed the <br /> September 17, 1999 "Workplan for Remedial Effectiveness/Case Closure Evaluation" submitted by <br /> Ground Zero Analysis Inc. (GZA) on behalf of the Roek Brothers. In response to several telephone <br /> conversations on January 4,2000 PHS/EHD provides the following comments. <br /> The September 17, 1999 "Workplan for Remedial Effectiveness/Case Closure Evaluation"refers to the <br /> most recent Fourth Quarter 1999 Groundwater Monitoring Event Report(4`"QMER 1999)not available at <br /> this time. However,conversations with Gregory Stahl of GZA suggest that the 4"QMER 1999 is presently <br /> in the process nearing completion and submittal to the client (Rock Brothers) and subsequent delivery to <br /> PHS/EHD is forthcoming. It is PHS/EHD's position that a thorough review of the 4th QMER 1999 and <br /> previous data is required prior to comment on the September 17, 1999 "Workplan for Remedial <br /> Effectiveness/Case Closure Evaluation" as this data set will report data for all wells not sampled for fuel <br /> oxygenates since 1998. <br /> PHS/EHD has performed a preliminary review of existing site data and at this time recognizes that <br /> concentrations of fuel related hydrocarbons in groundwater remain at significant levels exceeding <br /> California Primary Maximum Contaminant Levels (MCL's) after several months of active engineered <br /> remediation efforts. Upon receipt of the 4" QMER 1999 PHS/EHD will provide a prompt review and <br /> written response regarding proposals found in the September 17, 1999 "Workplan for Remedial <br /> Effectiveness/Case Closure Evaluation". <br /> Should you have questions regarding this correspondence please contact Ron Rowe at(209)468-0342. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division /f <br /> Ronald Rowe, Sr. REHS Margam REHS <br /> LOP/Site Mitigation Unit Supervisor <br /> Cc: Ground Zero Analyses Inc.—Gregory Stahl <br /> A Division of San Joaquin County Health Care Services <br />