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TABLE OF CONTEN M <br /> 1.0 INTRODUCTION .......... ............ ............. ...... I <br /> 1.1 Purpose . .. ........ .. ..................., .. .... .......... .. <br /> I.2 Scope of Work ............................. ... ...... .. ......... ... .. .. 1 <br /> 2.0 BACKGROUND INFORMATION ....... 2 <br /> 2.1 Site History ......... . <br /> 2.2 Previous Subsurface Investigative Activities ...... ............•.•...... ...,' .. 2 <br /> 2 <br /> 2.3 Previous Delta Reports ................ <br /> 2.4 Spill/Leak History .. 3 <br /> 2.5 Water Supply Well Inventory .................. .... .... ........ ........ ... 4 <br /> 2.6 Underground UtiIities.............................. ...... .. <br /> 4 <br /> 3.0 RESULTS OF INVESTIGATION ACTIVITIES .................. 5 <br /> 3.1 Site Geology....... ......................... <br /> 3.2 Ground Water 5 <br /> 3.3 Monitoring Well Installation and Abandonment .... .......... .. .. 5 <br /> 3.4 Survey of Monitoring Wells .......... <br /> - 3.S Well Development ............................ ............ .......... ... 7 <br /> 3.6 Soil Chemistry ............... .......................... <br /> 3.7 Ground Water Chemistry ................................... 7 <br /> 4.0 RESULTS OF TANK CLOSURE ACTIVITIES .................. 9 <br /> - 4.1 Description of the Tank Removal Process ......... <br /> 4.2 Ground Water Conditions in the Former Tank Excavation ...... 11 <br /> 4.3 Soil Conditions in the Former Tank Excavation .................. - - '- <br /> 4-5 <br /> I I <br /> 4.4 Soil Conditions Beneath the Former Product lines ............ . ..... <br /> •.��. ��� '�� <br /> 4-5 Soil Conditions in the New Tank Excavation ............... ... ..... ...... 2 <br /> 1 12 <br /> 4.6 Soil Conditions Beneath the Flow-Through Tank ............... .. . 12 <br /> 4.7 Soil Conditions in Areas Beneath Former Pump Islands ...... ........... ....... 13 <br /> 4.8 Installation of Soil Remediation System Components .......... .. ... <br /> I4 <br /> 4.9 Disposal of Stockpiled Soils .................. ........... 14 <br /> 4.10 Dewatering of Ground Water During New Tank Installations 14 <br /> 5.0 SUMMARY OF RESULTS ..... 15 <br /> "�. 5.1 Geology ................ ............... .. ................... ....... <br /> 5.2 Ground Water Flow ......................... ........... ... .... ........ 15 <br /> 5.3 Petroleum Hydrocarbons in Soil ..................... ....... .. .. Ib <br /> ^^ 5.4 Petroleum Hydrocarbons in Ground Water......0............. . .......... ... I6 <br /> 6.0 WORK PLAN ...................................... ........... .......... . . 16 <br /> 7.0 CONCLUSIONS ................ ................ . .. ... ..... .. .............. 17 <br /> 8.0 REMARKS/SIGNATURES ........... <br /> a , <br /> i <br />