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. S . 0 ANALYTICAL RESULTS FOR SOIL SAMPLES <br /> The soil samples collected from 6 0 and 19 0-feet bgs in boring MW-1, 5 5 <br /> and 16 0-feet bgs in borings MW-2, MW-4, and MW-5, and 5 0 and 15 5- <br /> feet bgs in boring MW-3 were submitted to Kiff Analytical, LLC for <br /> analyses The shallow soil samples collected and analyzed from the <br /> borings represent the capillary zone The deeper samples collected a n d <br /> analyzed from the borings represent the silty clay or clay unit <br /> immediately encountered below the screened interval <br /> All of the samples were analyzed for TPH-G, BTEX, the fuel oxygenates <br /> MTBE, TBA, TAME, DIPE and ETBE, lead scavengers 1,2-DCA and 1,2-EDB, <br /> and the alcohols ethanol and methanol by EPA Method 8260 The <br /> analytical results for the soil samples collected are tabulated in Table One <br /> A copy of the certified analytical reports and chain of custody forms are <br /> included in Appendrx E <br /> The soil sample collected from boring MW-1 at 60-feet bgs contained 340 <br /> ppm TPH-G and 0 27 ppm ethyl benzene The soil sample collected from <br /> boring MW-2 at 55-feet bgs contained 5,400 ppm TPH-G, 84 p p m <br /> benzene, 86 ppm toluene, 96 ppm ethyl benzene, 510 ppm total xylenes, <br /> and 4 6 ppm MTBE The soil samples collected from boring MW-4 at 5 5- <br /> feet bgs contained 500 ppm TPH-G, 0 95 ppm benzene, 12 ppm ethyl <br /> s benzene, 3 9 ppm total xylenes, and 1 6 ppm MTBE The soil samples <br /> collected from borings MW-1 at 19 0-feet bgs and MW-2 at 16 0-feet b g s <br /> contained relatively low detection of BTEX and MTBE All other soil <br /> samples analyzed did not contain any compounds over laboratory <br /> reporting limits <br /> The benzene and total xylenes concentrations in soil samples collected at <br /> 5 5-feet bgs from boring MW-2 exceeded the PRGs for residential soil Also <br /> the benzene concentration in the soil sample collected from 5 5-feet bgs <br /> in boring MW-4 exceeded the PRG for residential soil <br /> 9 . 0 MONITORING WELL INSTALLATION, DEVELOPMENT AND <br /> SAMPLING <br /> 9- 1 Monitoring Well Installation <br /> Groundwater monitoring wells MW-1 through MW-5 were installed in <br /> borings MW-1 through MW-5, respectively All monitoring wells were <br /> iconstructed with 2-inch diameter, 0 020-inch factory slotted, flush- <br /> threaded, Schedule 40 PVC well screen and blank casing Monitoring well <br /> 574 West Grant Line Road Report -- October 2000 <br /> -7- <br />