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State of Caldomra UNDERGROUND STORAGE TANK San Joaquin County <br />' Enwronmental Protection Agency CLOSURE REVIEW FORM Environmental Health Dnnsion <br /> Date 1011198 LUSTIS file no Case reviewer Harland Knoll <br /> Site=CA <br /> Responsible parties Address clo 3333 Beverly Rd, Phone no <br /> SeaSears Roebuck&Co Hoffman Estates,ll 60179 847-286-5530 <br /> 500 <br /> Sto <br /> CASE INFORMATION INIA=Not Applicable) <br />' Tank No Size in Gallons Contents Closed En- lace/Removed? Date <br /> Tank 1 Unknown Unknown Removed 2185 <br /> 1 <br /> 11 SITE CHARACTERIZATION INFORMATION GW= roundwaler <br /> GW basin San Joaquin Valley Beneficial uses NIA Depth to dnnkin2 water aquifer 35-40 feet estimated <br /> Distance to nearest municipal supplywell 2,000 feet estimate Distance between known shallow GW contamination and aquifer NIA <br />' Site GW highest depth NIA Site GW lowest depth NIA Shallow water-bearing zone well screen Flow direction NIA <br /> interval NIA <br /> Soil Type mainly sills sands gravels &clays I rmeabl Maximum depth sampled 5-feet <br />' III MAXIMUM DOCUMENTED CONTAMINANT CONCENTRATIONS-Initial and Latest—=Not Reported,ND=Non-detect <br /> Contaminant Sod m Water /L Contaminant Sod m /k Water <br /> Initial Latest — — Initial Latest Inital Latest <br /> (4994) (1994) (Year) (Year) <br /> TPHg 4,800 NIA — — Total Lead 18 WA — <br />' VOC18010 NID NIA — — Oil&grease 460 NIA — <br /> Benzene 0 058 NIA — — CAM metals 220 N/A — — <br /> (Banum) <br /> 17 Toluene 034 NIA — — <br /> Ethyibenzene 012 NIA — — <br /> Xylene 047 NIA — — <br /> IV SOIL REMEDIATION <br />' Method UST removal 1985 Intrinsic biodegradation 1985-1998 Duration of remediation NIA <br /> V GROUNDWATER REMEDIATION <br /> 11 Method NIA Duration of remediation NIA <br />' VI FREE PRODUCT <br /> Was free roduct encountered? No Has free product been totally recovered? NIA <br /> ' When was free product recovery o ect completed? NIA <br /> Vil RECOMMENDED ACTION <br /> Sod closure only Not applicable Case Closure Yes Solvent Case? No <br /> Additional Action Required I e additional silo assessment,remediation,monitoring) None <br /> VIII JUSTIFICATION FOR RECOMMENDED ACTION <br />' 1 Source removed by UST removal 1985 product line and Impacted soil removal 1994 2 No phase-separated liquid hydrocarbons <br /> 3 No waste oil storage at site since 1985 4 Impacted sod at site not in communication wldrinkin water <br /> 5)Ongoing tAodegradatWattenuation in sod,likely to continue 6)Low-permeability soil types and asphalt surface limit surface water infiltration and <br /> flushing of hydrocarbons to sod and groundwater <br /> 128es1rrr rrc <br />