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I Y I I I <br />' 10-September 2004 <br /> . AGE-NC Project No 04-1129 <br />' Page 4 of 7 <br />' contained diesel TPH-d was detected In each of the soil samples collected from beneath <br /> UST-I and UST-2 and in the stockpile soil sample at concentrations ranging from 1,400 <br /> mg/kg (UST-2) to 28,000 mg/kg (UST-1) None of the other target analytes were detected <br />' In the samples collected Analytical results of soil and grab ground water samples are <br /> presented in Tables 1 and 2, respectively <br /> • February 2003 -Monitoring wells MW-I through MW-3 were installed at the site Ground <br />' water monitoring and sampling were performed at the site TPH-d was detected in soil <br /> samples collected from pilot boring MW-1 at concentrations ranging from 42 mg/kg to 130 <br /> mg/kg No other analytes of concern were detected at or above laboratory reporting limits In <br />' the other soil samples collected from the site No analytes of concern were detected in ground <br /> water samples collected and analyzed from monitoring wells MW-1 through MW-3 during <br />' the monitoring and sampling period <br /> I <br />' <br /> 24 SITE HYDROGEOLOGIC CONDITIONS <br /> I <br /> . Information regarding site hydrogeologic conditions was obtained from the soil and grab ground <br />' water samples collected from the soil borings advanced at the site and quarterly ground water <br /> monitoring <br /> I <br /> 2 4 1 Site Geology <br />' Generally, moderate to dark yellowish brown, dry to damp, silty clay, clayey silt and silty sand was <br /> encountered from surface grade to 15 feet bsg in bonngs advanced at the site Moderate yellowish <br />' brown to olive gray, damp to saturated, lean clay, silty-clay and silt were encountered between 20 <br /> feet and 35 feet bsg Relatively coarser-grained soils, including olive gray to dark olive gray, <br /> saturated clayey silty sand,silt and clayey silt,were encountered at 40 feet bsg Moderate yellowish <br /> brown, damp to moist, clayey sand and poorly graded sand were encountered In borings MW-1. <br /> MW-3 and PB-20 between 15 and 20 feet bsg, 20 and 25 feet bsg and 25 anZW4. feet bsg, <br /> respectively The coarser-grained intervals encountered in borings MW-1,MW-3 and PB-20 appear <br />' to be laterally discontinuous Geologic cross sections A-A'and B-B' are provided as Figures 3 and 4 <br /> Boring logs generated from data collected during soil boring and monitoring well pilot boring <br /> advancement are included in Appendix C <br /> u <br /> Advanced GeoEnvironmental,Inc <br />