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r <br /> 1 i <br /> I <br /> I <br /> from eight to ten feet was in the capillary fringe Soils from twelve to twenty feet <br /> in depth, consist of medium light brown, loose, medium to coarse grained sand <br /> 5.2 Laboratory Analytical Results (soils) <br /> Select soil samples were analyzed for hydrocarbons by EPA modified 8015 as <br /> diesel and gasoline, oxygenates and volatile organic compounds by EPA method <br /> 8260 Select samples were analyzed for BTEX by EPA method 8020 (See Scope of <br /> Work, Appendix VI) <br /> Laboratory analytical results showed detections in samples taken from the northern <br /> tank area and areas follows Detections of diesel were encountered in boring GP- <br /> 4 at nine feet bgs in the northern tank area The level detected was 200 parts per <br /> million (ppm) Xylene was also detected in the same boring at levels of 11 0 and <br /> 6 0 ppb Gasoline, MTBE, other oxygenates and all other volatile constituents <br /> were non detect in the soil samples collected from the northern area borings <br /> 1 <br /> Laboratory analytical results showed detections in samples taken from the southern I <br /> tank area and the results are as follows Detections of diesel and MTBE were <br /> encountered in the two geoprobe borings which were located In the center of the <br /> former tank pit The detections were in borings GP-9 and GP-11 2 Levels of 200 ' <br /> parts per million (ppm) diesel were encountered in GP-9 at nine feet bgs, and <br /> levels of 64 ppb MTBE were encountered in GP-12 ata depth of nine feet bgs All <br /> other samples were non detect for diesel, gasoline, oxygenates and volatile <br /> constituents No detections were found in samples taken from borings outside the <br /> former tank pit in the southern area <br /> TABLE I <br /> SUMMARY OF SOIL ANALYTICAL RESULTS (GEOPROBE) <br /> TOTAL PETROLEUM HYDROCARBONS AS GASOLINE AND DIESEL <br /> OXYGENATES AND VOCs <br /> I <br /> I <br /> Boring Number Sample EPA Method EPA Method EPA Method 8260 MTBE, {uglk <br /> BTEX d 80211 j <br /> Depth 8015 Gasoline 8015 Diesel ETRE,TAME,RIPE,TBA, and EPA Method <br /> VOCs{STEX ppb <br /> (Feet) (mg/kg) ppm (mg/kg)ppm Ethanol,Methanol <br /> (u )ppb <br /> GP-1 9 NO ND ND J ND <br /> GP-1 20 ND ND ND ND <br /> GP-2 9 ND ND ND ND <br /> i <br /> Avalon Environmental Consultants Kashmir h Dalwidner Dhoat <br /> 20 Corporate Plaza 9627-001 1 <br /> New Beach,Cahfomia 6 15600 S Harlan Road I <br /> I <br /> I <br />