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Advd nced <br /> -..mental Inco,GeoEnvlron . <br /> 05 May 1999 r <br /> AGE NC Project No. 98-0450 f"' � <br /> RFr . <br /> ED.. <br /> Ivir. Mike Infuma. MAY 0 5 199 <br /> SAN JOAQUiN COUNPHS-EHD ENU.Ii4UNMENTAL HEALTH <br /> 304 East Weber Avenue TY PERMIT i SERVICES <br /> Stockton, CA 95202 <br /> Subject: Soil Vapor Extraction Feasibility Test <br /> Mel Bokides Petroleum <br /> 501 West Lodi Avenue,Lodi, California <br /> Dear Mr. Infurnw, <br /> At the request of Mr.Nick Bokides,Advanced GeoEnvironmental,Inc.(AGE)is prepared to perform <br /> a soil vapor extraction pilot test at the referenced site. The test results are required to fully assess the <br /> effectiveness of soil vapor extraction as a potential corrective action alternative for the petroleum <br /> release on the site. <br /> Two soil vapor extraction wells have been installed on the site. The scope of the work includes the <br /> performance of an eight hour soil vapor extraction test. A portable internal combustion system will <br /> be used to determine the subsurface permeability for vapor extraction, radius of influence of the <br /> vapor extraction well and the initial hydrocarbon recovery rate. <br /> Parameters will be measured at regular intervals throughout the test. One remediation well will be <br /> used as the primary extraction well. Other remediation and selected ground water monitoring wells <br /> will be used to observe the induced vacuum from the source well. Ground water depths, soil vacuum <br /> and hydrocarbon concentration will be measured during the SVE test. <br /> Four vapor samples will be collected from the extraction well during the test. Samples will be <br /> collected at approximately two hour intervals. The samples will be collected in Tedlar bags and <br /> stored in a cool container and transported under chain-of-custody to a State-certified laboratory for <br /> analysis. Each vapor sample will be analyzed for TPH-g,TPH-d,BTE&X and MTBE in accordance <br /> with the appropriate EPA methods. <br /> The test has been scheduled for 12 May 1999, Wednesday from 8 am to 5 pm. <br /> 4005 North Wilson Way;Stockton,California 95205 <br /> ` Telephone(209)467:1006 :FAX (209)467-1118 <br />