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MIN <br /> Station No. 502, 35 H. Cherokee Lane, Lodi, Interim Remediation Plan <br /> _ The work has included the drilling of soil borings and the installation <br /> of monitoring wells in the boreholes. <br /> Analses ofhave indicated the presence of hydrocarbon contaminationiat vaor the site�Ples <br /> SITE CHARACTERIZATION <br /> A Soil GasSurvey and a Performance Test were conducted b <br /> Technologies, Inc., at the subject site on 8 August 1989. Four existing <br /> vapor recovery wells and one monitoring well were used in the subsurface <br /> investigation. These are shown in Figure 1. <br /> Soil Gas Survey <br /> Sail gases were extracted and analyzed for total volatile hydrocarbons <br /> {TVH) during the Soil Gas Survey to screen for the presence o . <br /> hydrocarbons and to delineate the extent of TVH impacted soils ..at the f <br /> site. Four existing vapor recovery wells <br /> one monitoring well (FW- were used in theVinvest gation-8 and VW-9) and <br /> p' A vacuum was applied to each well to extract soil <br /> soil gas was analyzed using - a Beckman Model 400 gas. The <br /> h Hydrocarbon <br /> Analyzer equipped with: a Flame Ionization Detector (FID). The analyzer <br /> ~' w,s calibrated using certified hydrocarbon standards. <br /> Hydrocarbon vapor concentrations as high as 29,000 <br /> ddring the Soil Gas Survey. The results are presented pin Twere <br /> able lrecorded <br /> TABLE I - SOIL GAS SURVEY RESULTS <br /> Beacon Station #502 <br /> in. <br /> 35 North Cherokee Lane, Lodi <br /> 8 August 1989 <br /> Ya r v W 1i CQseAtr- n.�nnmvl <br /> �.. VW-6 <br /> VW-7 27,000 <br /> VW-8 25,500 <br /> . <br /> VW-9 29,000 <br /> MW-4 29,000 <br /> 26,000 <br /> PPmv - parts per �Tlion lin a volume to <br /> �� volume basis (206C, 760mm NO <br /> - 2 - <br /> I�: a''f <br />