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• <br />• $5,000.00 for a pumping discharge permit <br />Pumping costs <br />Length x depth x width of slurry wall = 7350'x 18'x 2' = 264,600cf of water .x 7.481 = 1,979,472.6 gallons <br />1,979,472.6 gallons / 90,000 gal/hour = 21.99 hours of actual operation <br />$8.66/hr cost to operate the pump x 21.99 hrs = $190.47 for operatin>= time; <br />$1.94/hr ownership cost (for hours pump is onsite, but not used) <br />Three week project = 21 days - 3 days = I8 days x 24 hours = 432 hours <br />432 hours x $1.94/hr = $838.08 for on-site unused time <br />Total : $1,028.55 <br />True total: $6,028.55 <br />L <br />