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C A M B R I A Ms. Lori Duncan <br /> November 18,2005 <br /> TABLE A: GROUNDWATER DISPOSAL COST COMPARISON <br /> Off-Haul Treat and Discharge <br /> Additional One-Time Costs <br /> Installation $2,500 $54,850 <br /> Permits $0 $1,500 <br /> Start-up $0 $1,500 <br /> © Total One-Time Costs $2,500 $57,850 <br /> Additional Annual Costs <br /> O&M Labor $1,440 $4,860 <br /> Utilities $0 $1,000 <br /> Consumables $14,304 (tank rental) $1,200 <br /> Analytical $0 $2,880 <br /> Carbon Replacement $0 $3,000 <br /> Discharge Fee $0 $7,392 <br /> Vacuum Truck $101,400 $0 <br /> Total Additional Annual Costs $117,144 $20,332 <br /> Anticipated Duration (years) 4 4 <br /> Extended Additional Annual Costs $468,576 $81,328 <br /> Total Additional Costs $471,076 $139,178 <br /> Based on this cost comparison, discharging treated groundwater to the sanitary sewer is the more <br /> cost-effective option. Therefore, treatment and discharge of extracted groundwater has been <br /> incorporated into the DPE system design as discussed below. <br /> 9 <br />