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TABLE 4-1. ESTIMATED COSTS TO CONDUCT REMEDIAL TREATMENT <br /> EFFECTIVENESS MONITORING AND CLOSURE REPORT. <br /> TASK <br /> ESTIMATED COST <br /> Dnlhng 3 Confirmatory Boreholes to $5,200 <br /> 60 Feet <br /> Soil Analysis (6 samples at 200 ea $1,200 <br /> for TPH and BTEX) <br /> Closure Report $5,000 <br /> Field Gear/Health & Safety/etc. $500 <br /> 1 1/2 day meeting RWQCB in Sacramento $750 <br /> Project Management (10% total) plus $1,600 <br /> miscellaneous <br /> ESTIMATED TOTAL $14,250 <br /> 5.0 SUMMARY <br /> Background information from several soil and groundwater investigations performed <br /> at the 102 S Wilson Way site suggests contamination of sods at the northwest corner <br /> of the property and migration of contaminated groundwater offsite The volume, <br /> extent, and toxicity of soil contamination are known Further site investigation to <br /> define the extent of the groundwater plume and migration is warranted <br /> Further investigation should include the completion of additional investigation This <br /> work requires installation of atleast 4 monitoring wells The current data is insufficient <br /> to develop the final design of a remedial treatment system Our conceptual feasibility <br /> study indicates that high-vacuum dual vapor and groundwater extraction with <br /> enhanced insitu biodegradation of soils may be most cost effective treatment option <br /> Our estimate of the costs to complete all the Corrective Action tasks required by the <br /> cleanup fund are summarized in Table 5-1 <br /> 18 <br />