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i <br /> 1 # <br /> Third Quarter 1998 Post-Remediation Monitoring and Sampling Report[Reauest for Closure 3 f <br /> P The Southland Corporatlon,Store#20304,455 Grant Line Road.,Tracy,CA October 15,1998 <br /> Closure Abstract { <br /> Based on 1)the removal of the hydrocarbon source from the site,2)the low to moderate residual <br /> hydrocarbon concentrations remaining in the groundwater at the site which are expected to decline over <br /> time,3)source area concentration declines of up to 90%since completion of remediation,4)the naturally <br /> occurring biodegradation of the dissolved hydrocarbon plume which is expected to continue,5)data <br /> indicating that the dissolved hydrocarbons plume is stable and is not a threat to any nearby water producing <br /> wells,and 6)the absence of MTBE and other gasoline oxygenates in the samples collected from existing <br /> site monitoring wells, Fluor Daniel GTI,on behalf of the Southland Corporation,request that the site be <br /> classified as low risk under the State Water Resources Control Board policies and that no further action be <br /> + required at the site. <br /> 1. r <br /> S <br /> Please contact Fluor Daniel GTI's Martinez office at(925)370-3990 if you have any questions or comment <br /> regarding this report. <br /> i <br /> Sincerely, <br /> Fluor Daniel GTI,Inc. Fluor Daniel GTI,Inc. j <br /> Submitted by: Approved By: <br /> Jon Philipp Shelby Lathrop <br /> Geo gist Project Manager - <br /> t � <br /> Ed K.Simonis, R.G. <br /> Senior Geologist `" <br /> '�--■ c: Ms. Elizabeth Thayer,California Regional Water Quality Control Board-CVR S <br /> Mr. Harlin Knoll-San Joaquin County Public Health Services 4471 <br /> Attachments <br /> a 1. Figures j <br /> 2. Table 1 ' <br /> 3. Field Data Sheets ; <br /> 4_ Laboratory Analysis Report <br /> a <br /> FLUOR DANIEL GTI <br /> 20304g398.RPT <br /> �� 1 <br />