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29 January 2002 ' AGE-NC Project No. 98-0466 Page 21 of 25 ' S.O. SUMMARY AND CONCLUSIONS Ten areas of concern were assessed during the November/Decemb r 2001 site investigation, ' including the former truck parking areas, the former south steam cleaning area,the Ray Bond"Penta Tank" and wash-down areas, the west ditch, the Millwork septic leach field and wash-down areas, the 44x120 Storage Building sump area, the north burn pit and the north storm water basin areas. ' Based on the data collected from the former south steam cleaning area,AGE finds: • TPH-d was detected in the ground water sample collected rom soil boring PB3 at a ' concentration of 64 4g/1. Soil boring PB3 was advanced near a known unauthorized petroleum hydrocarbon release related to a former diesel UST as discussed in Sections 1.2. and 1.3. The detected concentration of TPH-d inthe water samplecollected fromboring PB3 ' is quite likely the down-gradient margin of the hydrocarbon-imp acted ground water plume. There do not appear to be any remaining environmental concems in the former south steam cleaning area. MBased on the data collected from the former truck parking areas, AGE ds: ' Metals concentrations detected in the soil samples collected from PB1 and PB2 are at or near background levels. No other analytes of concern were detected above laboratory reporting ' limits in the ground water sample collected from PB3. There do not appear to be any significant environmental concerns in the former truck parking area. ' Based on the data collected from the Ray Bond Area "Penta Tank" d wash-down areas.. AGE finds: • Formaldehyde was detected in soil sample PB4-10 at a concentration of 3.2 mg/kg but was not detected in the grab ground water sample from PB-4.No other analytes of concern were detected in the soil and ground water samples collected from bo ' g PB4. The results appear to show that low concentrations of formaldehyde were releas d to soil in the Ray Bond wash-down area,but the mass released was not sufficient to impact groundwater.AGE does ' not consider the release to be significant or to warrant additiona.investigation. Based on the data collected from the west ditch area,AGE finds: �• TPH-d and TPH-mo were detected in two soil samples collected from boring PB5 at concentrations as high as 3.3 mg/kg and 33 mg/kg,respectively. Hormaldelayde was detected ' in the 5-foot sample collected from PB5 and the 10-foots le collected from PB6 at Advanced GeoEnvironmeut4 Inc.