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s _ <br /> a� <br /> 1 EVAX PrOJect 2260-03 <br /> f ; 6 May 1991 <br /> CONCLUSIONS <br /> I- EVAX installed one <br /> 25) and one Vapor vapor extraction <br /> Service 5tatian bg5extraction well (VW-26 extraction/groundwater <br /> MW-25 in Lodi ) On Marchmonitorino well <br /> level was set at a depth of'77a1itbel . The base of 28, 1991 at Beacon <br /> was setwat 59 feet be owof feet below ground surfaceean�ll casing of <br /> 66 feet. The base of the well androundwater <br /> ground surface. <br /> 2• Five soil casing Of VW-26 <br /> between samples, taken from <br /> - <br /> concentrations and 60.5 feet the boring of MW-25 <br /> Ppm X of 4,800 were analyzed far at depths of <br /> concentrationsound in ppm TPHg, 7,1 ppm B, TPHg and BTEX. Maximum <br /> sails sampled I a 95 ppm T. 42 PPM <br /> - <br /> PPM E, and 0.033�.e <1.0 ppm TPHg, <0.005 PPM <br /> of 40.5 feet.E Minimum <br /> depth of 60.5 feet FPM X) were found in soils sampled B' 0.007 , <0.005 <br /> pled near PPM T <br /> 3. Four A groundwater at a <br /> between 5011 sample 30.5 and taken from the boring <br /> TPNg or BTEX 60.5 fee*, were also g of VW-26 at <br /> dep.h of was detected in the samplesanalyzed for depths of <br /> +�. TPHg, <0.005-p feet. Results of the 0 , except for a Tsam and <br /> r3TEX. NO <br /> ppm 8 P taken at a <br /> 3.5 ppm T 5-foot level sample <br /> 4 <0.005 ppm E, and I4 AIe were: 580 ppm <br /> The data suggests PPm X. <br /> with <br /> proximity an attenuation <br /> " Y to groundwater. in the hydrocarbon impact of soils <br /> Laboratory analysessere sand sampled for <br /> in the groundwater sam lts indicated no On <br /> ple. detectable TpHg, B April , I99I. <br /> - 9� BTEX, or 7P#Td <br /> ►$* LIMITATIONS <br /> i This report was <br /> conditions at theArepared for Ultramar <br /> from a limited site for Inc. Evaluation <br /> number of borine purpose of this of geological <br /> t vary Outward from areas drilTedgs and samples. <br /> investigation was made <br /> analyses, and and sam Ples. Subsurface <br /> commonly Other subsurface Pled. Additional soil may <br /> and <br /> y associated with this t study, can borings and <br /> ype of environmentaluinvestce igatuncertainties <br /> - 6 - <br />