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r <br /> \/ .,oe <br /> r 06 April 1999 <br /> AGE-NC Project No. 98-0460 <br /> Page 4 of 6 <br /> r <br /> 4.0. FINDINGS <br /> r <br /> All findings were based upon field observations and data included in laboratory reports on analysis <br /> of soil samples. <br /> r <br /> 4.1. UST REMOVAL <br /> r <br /> Both USTs appeared to be in fair condition upon removal. Only minor field indications of <br /> hydrocarbon-impacted soil were observed in the soil immediately surrounding the waste oil UST. <br /> ` Soil discoloration and hydrocarbon were observed in the samples collected beneath the diesel <br /> dispenser. <br /> r <br /> 4.2. ANALYTICAL RESULTS OF SOIL SAMPLES <br /> r <br /> TPH-d and xylenes were detected in sample T3-C, collected beneath the waste oil UST, at <br /> concentrations of 69 parts per million (ppm, reported as milligrams per kilogram) and 0.04 ppm, <br /> respectively.Nickel, zinc, chromium and cadmium were detected in sample T3-C at concentrations <br /> of 67 ppm, 24.3 ppm, 12.75 ppm, and 1.63 ppm, respectively. Lead, Chromium VI, PCBs and <br /> volatile organic compounds were not detected in sample T3-C. Petroleum hydrocarbons were not <br /> ` detected in samples collected from beneath the diesel UST. <br /> r <br /> TPH-d was detected in soil samples collected at depths of 2, 5 and 9 feet bsg at the dispenser <br /> location at concentrations of 1,140 ppm, 470 ppm and 6,400 ppm, respectively. Toluene, <br /> ethylbenzene and xylenes were detected in the sample collected from a depth of 2 feet bsg at <br /> ` concentrations of 0.04 ppm, 0.25 ppm and 0.77 ppm, respectively. Ethylbenzene and xylenes were <br /> detected in the sample collected from a depth of nine feet at concentrations of 3.3 ppm and 6.8 ppm, <br /> respectively. <br /> TPH-d was detected in soil stockpile samples SP-2 and SP-3 at concentrations of 655 ppm and 130 <br /> ppm, respectively. Ethylbenzene and xylenes were detected in sample SP-3 at concentrations of <br /> 0.007 ppm and 0.018 ppm, respectively. Nickel, zinc, chromium and cadmium were detected in <br /> sample SP-3 at concentrations of 64.25 ppm, 32 ppm, 14.08 ppm and 1.4 ppm, respectively. Lead, <br /> Chromium VI, PCBs and volatile organic compounds, other than ethylbenzene and xylenes,were <br /> ` not detected in sample SP-3. Petroleum hydrocarbons were not detected in stockpile sample SP-1. <br /> Analytical results of soil samples are summarized on Tables 1 and 2. The laboratory reports (PET <br /> r Sample IDs PE3242-01 to -07 and AAL Batch No. 99-0323-008) and chain-of-custody forms are <br /> included in Appendix B. <br /> r <br /> Advanced GeoEnvironmental.Inc. <br /> r <br />