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PUBLIC hEALTH SERVICES <br /> SAN JOAQUIN COUNTY r. <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95.202 <br /> 209/468-3420 <br /> " low <br /> W V Raymond <br /> P O Box 567 <br /> Stockton CA 95203 <br /> RE: California Welding Supply SITE CODE: 2083 <br /> 1000 E Eleventh St. <br /> Tracy CA <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD)has reviewed the <br /> April 5, 1997"Result of Groundwater Investigation and Request for Closure"prepared by William J. Hunter <br /> and Associates for the above referenced site. <br /> PHS/EHD requires all pertinent data to be submitted prior to determining the closure eligibility of this site. <br /> Please submit a quarterly report which includes a survey of wells within 2000 feet, and a map showing <br /> nearby well locations and the distance to the Tracy water system.The presence of free product noted in <br /> SS-2 should be included in Table III.The report should include an estimation of the mass volume of <br /> petroleum hydrocarbons removed and the volume remaining subsequent to the September 19, 1995 over <br /> excavation. Cross sections depicting lithology in relation to residual contamination and a tabulation of the <br /> domestic well analytical results should also be included in the report. <br /> Diesel range hydrocarbons C12-C14 were detected in soil and groundwater during the July 25, 1996 <br /> investigation.The monitoring well samples were not analyzed for TPH-d. Please include the EPA 8015 <br /> analysis for TPH-d in the next round of monitoring well sampling. Monitoring well samples have not been <br /> analyzed for MTBE. Please include an MTBE distinction with the EPA 8020 analysis in the next round of <br /> monitoring well sampling.The domestic well adjacent to the western side of the body repair shop has not <br /> been analyzed for petroleum hydrocarbons. Please make arrangements to sample this well with the next <br /> round of sampling.These results should be tabulated in the report. <br /> Please submit a workplan to investigate the quantity of free product present in the area of SB-2 and to <br /> remove any free product encountered. <br /> If you have any questions, please contact Steve Sasson RENS, at(209)468-3459. <br /> Donna Heran,REHS, Director <br /> En�vir/nmee�nta`lI-jeeaallt(�h Division <br /> Steven Sasson, Senior REHS Margaret Lagorio, REHS <br /> Site Mitigation Unit Supervisor <br /> cc: Elizabeth Thayer,CVRWQCB <br /> cc: Met Jacobo, SWRCB <br /> cc: William Hunter,William J Hunter&Associates <br /> A Division of San Joaquin County Health Care Services <br />