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Working To Restore Nature RESULTS OF THE INVESTIGATION ' Soil Lithology ' Alternating soil horizons of elastic silt and sand with 5-15% fines are present to a depth of approximately 26 feet. From 26 feet to approximately 72 feet a very thick elastic silt horizon 1s present which exhibited gradational color changes and slight moisture differences throughout ' the horizon From approximately 72 feet to 87 feet alternating lenses of silty sand and poorly graded sand (with gravel) are present The well log is presented in Appendix I ' Analytical Results - Soils ' Soil samples were collected at 64 5 and 70 feet below surface grade (BJJS-MW1-64 5' and BJJS- MW2-70') for analysis of petroleum hydrocarbon analytes No petroleum hydrocarbons were present at or above method detection limits in either sample Analytical results are summarized ' in Table 1 Analytical data sheets and chain of custody documentation are presented in Appendix II Analytical Results - Groundwater ' Petroleum hydrocarbon analytes were not present at or above method detection limits in the groundwater sample (BJJS) Analytical results are summarized in Table 2 Analytical data sheets and chain of custody documentation are presented in Appendix III ' Groundwater Gradient The facility well was monitored and surveyed during site activities The depth to groundwater ' in the facility well, 74 16 feet, suggests that hydraulic continuity may exist between the waterbearing zone of the facility well and the waterbearing zone of monitoring wells MW-1 (72 84')and MW-2 (72 15') The groundwater gradient (southeasterly at 0 009 ft/ft) may reflect ' a residual pumping low created by the facility well (FW) The next groundwater monitoring and sampling will be conducted in late October when the facility well (FW) will not be pumping as frequently or at the high rate at which it is currently pumping More reliable gradient ' calculations should be possible in October 1 M\150W6 REPORTSISR-0894 FWL 6