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Ef MCES <br /> PUBLU HEALTH S <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health;Officer c� .• P <br /> 304 East Weber Avenue,Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> SAIYED ALI <br /> CALTRANS DISTRICT 10 <br /> P O BOX 2048 <br /> STOCKTON CA 95201 <br /> RE: Stockton Maintenance Station Site Code: # 1018 <br /> 1604 B Street <br /> Stockton CA 95201 <br /> WORK PLAN: Work Plan,Draft,Subsurface Groundwater Investigation <br /> DATED: February 4,2002 <br /> PREPARED BY: IT Corporation <br /> APPROVED: ri <br /> DISAPPROVED: <br /> ADDENDUM NEEDED: Submit bv: <br /> ADEQUATE AND NECESSARY ELEMENTS OF THE WORK PLAN [H&S 2529937,subd(c)(3)1: <br /> 1. Advancement of one direct push CPT boring to delineate the vertical extent of petroleum hydrocarbon <br /> contamination in groundwater. The boring will be advanced to 100-feet bsg;depth discrete groundwater <br /> samples will be collected at 5-foot intervals beginning at fust encountered groundwater. <br /> 2. Up to 20 discrete groundwater samples will be analyzed for TPHg,TPHd,BTEX,and fuel oxygenates by approved <br /> EPA Methods listed in the work plan,as well as for other aromatic and halogenated volatile organics and an <br /> elements scan. <br /> 3. Following completion of the sample collections,the boring will be properly destroyed with neat cement grout from <br /> total depth to surface. <br /> 4. A report of findings will be prepared and submitted,to SJC/EHD following completion of the fieldwork. <br /> COMMENTS AND CONDITIONS: <br /> 1. A site specific Health&Safety Plan must be submitted to SJC/EHD prior to initiation of fieldwork. <br /> 2. The report of findings must be submitted to SJC/EHD within 60-days following completion of the fieldwork. <br /> 3. A SJC/EHD well permit application and required permit fee have been submitted. <br /> DATED BY ot G <br /> Lori DuncanSenior REHS(209)468-0337 <br /> cc: Martha Adams,IT Corporation(by fax) <br /> A Division of San Joaquin County Health Care Services <br />