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ami <br /> TABLE B.3-2 <br /> Backup for Unit Construction Costs <br /> Groundwater Recirculation <br /> Nestle Ripon <br /> ITEM NO UNIT NOTE/CALCULATION <br /> a length of P&T alignment 12000 FT from figure <br /> b injection well spacing 600 FT estimated from numerical flow model <br /> C extraction well spacing 600 FT estimated from numerical flow model <br /> d number of wells per location 2 1 well in intermediate aquifer,1 well in lower aquifer <br /> e number of extraction wells EA =round(a/b)x 2 wells per location <br /> f I number of injection wells 40 EA =round(a/c)x 2 wells per location <br /> g injection flow rate-per well 50 GPM estimated from numerical flow model <br /> h extraction flow rate-per well 50 GPM estimated from numerical flow model <br /> i injection flow rate-total 2000 GPM =e x g <br /> 1 extraction flow rate-total 2000 GPM =f x j <br /> k injection flow rate-total 2.88 MGD <br /> I extraction flow rate-total 2.88 MGD <br /> m pipe diameter-injection 12 IN radius adjusted to reach flow velocity of—6 fUs <br /> n pipe diameter-extraction 12 IN radius adjusted to reach flow velocity of—6 fUs <br /> o velocity-injection 5.7 FT/S flow/pipe area <br /> p velocity-extraction 5.7 FT/S flow/pipe area <br /> q base of intermediate aquifer 110 FT from cross sections <br /> r base of intermediate aquifer 125 FT from cross sections <br /> s drilling feet-extraction well 9,400 FT BGS =e x(q+r) <br /> t drilling feet-inection well 9,400 FT BGS = f x(q+r) <br /> u total drilling feet 18,800 FT =s+t <br /> v drilling production rate 200 FT/DAY amec assumption <br /> w drilling rigs 2 EA <br /> x days on site 47 DAY =u/v/w <br /> y weeks on site 10 WK =x/5(day/wk) <br /> z trench width 4 FT <br /> as trench depth 3 FT <br /> bb trench excavation volume 5,333 BCY =z x as x a <br /> cc swell 1.15 <br /> dd excavated volume(loose) 6,133 LCY =bb x cc <br /> ee crushed stone thickness 0.5 FT <br /> ff crushed stone volume 889 CY =ee x z x a <br /> gg piping length of 12 in PVC in trench 24,000 FT assumes 2 x 12-inch pipes in trench,one for injection and one for <br /> extraction <br /> hh total volume treated per year 1051.2 MG =I x(365 day/year) <br /> ii extraction well pump power requirements 3 HP 4-in submersible,33-55 gpm,100'head <br /> jj injection well pump power requirements 3 HP 50 gpm centrifugal,100'head <br /> kk annual power consumption-extraction well 784 MW-hr =ii x(0.746 kW/hp)x(24 hr/day)x(365 day/yr)x e x(MW/1000 kW) <br /> II annual power consumption-injection well 784 MW-hr =jj x(0.746 kW/hp)x(24 hr/day)x(365 day/yr)x f x(MW/1000 kW) <br /> treatment compound blower and pumping <br /> mm Irequirements 105 hp 20,000 cfm blower(30 hp);2,000 gpm centrifugal(75 hp) <br /> nn annual power consumption-treatment compound 686 MW-hr <br /> mm annual power consumption-total 2255 MW-hr =kk+II+nn <br /> nn CO2 equivelant factor 878.71 Ib CO2/MW-hr California Climate Action Registry <br /> 00 Tons of CO2 emmissions per year 991 ton =mm x nn x(ton/2000 Ib) <br /> Notes <br /> cells highlighted in blue are calculated values <br /> AMEC Geomatrix, Inc. <br /> \\oad-fs1\doc_safe\9000s\9837.006\4000 REGULATORY\FS Assessment_Apx 3_012711\Attachment B.3Wttachment B.3-GW recirc-Table 13.3-1 to B.3-2.xlsx Page 1 of 1 <br />