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bottom of the augers was knocked out with a 140-Ib hammer dropped <br /> through the augers <br /> Drilling equipment was steam-cleaned prior to use, and sampling <br /> equipment was washed with a TSP solution between sampling intervals to <br /> prevent cross-contamination Rinsate was contained on-site in sealed a n d <br /> labeled 55-gallon steel drums Drill cuttings were contained in steel bins <br /> and are currently being profiled into Forward Landfill for disposal <br /> 7 . 0 SUBSURFACE LITHOLOGY AND HYDROGEOLOGY <br /> Sediments encountered during drilling generally consisted of sand of <br /> relatively high permeability from beneath the asphalt/concrete surface to <br /> approximately 18-feet bgs, followed by low permeability clayey and silty <br /> sediments from approximately 18-feet bgs to approximately 37-feet bgs <br /> Below 37-feet bgs lies sediments with high permeability until a depth of at <br /> least 50-feet bgs is reached Below 50-feet bgs, the sediment layers <br /> become discontinuous with high, medium and low permeability layers at <br /> various depths in different portions of the site until a depth of 120-feet <br /> bgs in reached where a relatively continuous layer of low permeability <br /> sediments is encountered At a depth of 130-feet bgs, a relatively <br /> continuous layer of high permeability sand is encountered Two geologic <br /> cross-sections have been prepared for this site The location of the <br /> geologic cross-sections is shown on Figure 3, and the geologic cross- <br /> sections are presented as Figures 4 and 5 <br /> Hydrocarbon odors were present in soil from monitoring wells MW-4, <br /> MW-5 and MW-6 Groundwater was encountered between 11 5 and 14- <br /> feet bgs The boring logs and well construction details are included as <br /> Appendix C <br /> 8 . 0 ANALYTICAL RESULTS FOR SOIL <br /> One soil sample collected from the capillary zone in borings MW-1 <br /> through MW-6 was analyzed by Chromalab, Inc for TPH-G by modified EPA <br /> Method 503018015, TPH-D by EPA Method 3510/8015 and VOCs and fuel <br /> oxygenates by EPA Method 8260 The analytical results are tabulated 1 n <br /> Table Three A copy of the certified analytical reports and chain of <br /> custody forms are included in Appendix D <br /> No hydrocarbons were detected in the soil samples collected from borings <br /> MW-1, MW-2, MW-3 and MW-6 The only hydrocarbons detected in the <br /> soil sample collected from boring MW-4 was 2 6 ppm hydrocarbons in the <br /> Franks One Stop Report - June 1999 <br /> -7- <br />