Laserfiche WebLink
: Now <br /> ALTERNATIVE A 2 <br /> Supporting Calculations <br /> Proposed Excavation Dimensions and Soil Volume/Weight Calculations: <br /> Overburden: (67.5'L x 10'H x 20'W)+(15'L x 15'H x 20'D)= 18,000 fl 127 f/yd'=667 yd' <br /> 667 yd'x 1.68 tons/yd'= 1,120.56 tons x 2,000 lbs/ton=2,241,120 lbs of overburden <br /> Soil for Disposal: 77' L x 11'H x 20'W= 16,940 027 W/yd3=627.40 yd' <br /> 627.40 yd'x 1.68 tons/yd3= 1,054 tons x 2,000 lbs/ton=2,108,089 lbs of soil to be disposed <br /> Soil Density: Assume 1.68 tons/y&or 125 lbs/ft <br /> Average TPH in soil to be removed: <br /> Based on TPHd and TPHg at each known sample location within area of proposed excavation <br /> including samples from: <br /> SB-1 @15' (3,500+ 120) <br /> SB-2 @ 15' (4,100+88) <br /> MW-2 @20' (14,000+870) <br /> MW-4 @20' (1,100+85) <br /> MW-3 @20' (270+31) <br /> Total TPHd&g from 5 samples=24,164 mg/Kg TPHd&g/5 samples=4,832.8 Avg.TPH <br /> (2,108,089 lbs impacted soil x 4,832.8 mg/Kg Avg.TPHd&g concentration)/ 1,000,000= <br /> 10,187.971bs of TPHd&g to be removed <br /> Cost per pound TPHd&g: <br /> Cost estimate range from preceding page without shorin : $147,451.28 to$179,643.59 <br /> $150,851.28 low range cost/ 10,187.97 lbs TPHd&g=$14.81/lb TPHd&g removed <br /> $183,043.59 high range cost/ 10,187.97 lbs TPH d&g=$17.97/lb TPHd&g removed <br /> Cost estimate range from preceding page without shoring or dewatering: <br /> $124,051.28 low range cost/ 10,187.97 lbs TPHd&g=$12.18/1b TPHd&g removed <br /> $145,543.59 high range cost/ 10,187.97 lbs TPHd&g=$14,29/lb TPHd&g removed <br /> R:ICONTGRANIStocktonlCAPICap Addendum Costs&Supporting Calcs <br />