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<br />Un28i:i~ <br /> <br />Application of Calculations to Previously Treated Waters <br /> <br />p.eltaJ:i-ravel Pit#1: <br />E.l).rn~d...Yti.~P.h;l.~JL!iervice onsllo. chl9li.ntl~.Q_clil)nLlhi~l)lfa~ <br />This pond was identified by Mitchell (1995) as DR0022, rho CO!Or..do DIvIsion <br />ofWlldhfe water code IS 93398. Al ma,(Imum pool, this pond has a known mean <br />. "'-," <br />depth 01 35 feet covers 88 surface acres, ~n~as a volumai' 308 AF The <br />estimated chemical cost 10 treat a mlnlmu,~.pOol of 12,~F is $f76 (t2AF II <br />51481AFl The standard labor cost is $3873. PumplM with Ihree phase was <br />estimated to cost 531,800 (308AF x 5100i~F" 51060) in lhe allachedtable <br />Usmg the calculations descnbed above!lha esli~ated cost of p!Jrt;lPiA'g and <br />treatmg thiS pond would be 537,399 (51np -t- 5~?3-t- 531,800):-the actual <br />reported cost was 535,000. The calculatlg[lS ~sulled,.tn a cost overestimate 01 <br />52.399 If the set up lee is subtracted fromThe estimated ,cost the overeslimatlon <br />. <br />is 51,399 (see Consideration of Ass.wna!lons - Pu,mpingrlh Three-Phase <br />Service Onslte. Set Up Fee)., Fu~r reduCllon In the cost overestimate can be <br />obtained by subtracting the mln~m-pool voluTe frorl}the full pool volume and <br />then multlplymg the cost of pumping pef.AF (see"'Coflsideratlon 01 Assumptions. <br />Pumping With Three.Phiilse flirv~, e ;S,te ~~~um Pool). If thiS is done, the <br />cost of pumping waul" 529,6 (1308AF - 12AFJ x 51001AF) Instead 01 <br />531,800 and Ihe estl t ' st f isprojll..G1"would be 535,199 (29.600" 1776 <br />.. 3823). Therefore h thes' visio iiie cost overesllmate would be only <br /> <br />^ ' <br /> <br />n.1L4.J~Qid Pond.;., <br />E"!lll~d Wjth~-Phase $e~ice onsite. chlo:rlneISOil\l1l1l1hiQ.i.lillilit~ <br />ThiS'p~ln~ idenllf~~, y' Itchel! (1995) as MR0269 The Colorado DIVision <br />of ~~e waterifX'e IS O. At maximum pool, thiS pond has a known mean <br />8-phi or-"10,feel~ver ,5 surface acres, and has a volume of 50 AF. The <br />hemical col~to treg,e minimum pool of 12 AF is 51776 (12AF '" 51481AFj The <br />standard lab~or.Wsf1s $3823, Pumping Without three-phase was estimated to <br />cost $14,05 5~AF x S2511AF ... $1500). Therelore, uSing lhe calculations <br />descnbed a ve the estimated cost 01 pumping and treating this pond would be <br />$19,649 ~Jh6 -t- 53823.. 514,050), The adual reported cost was 517,600, The <br />calc IaIiMs resulted in a cost overestimate of 52.049 If the set up fee is <br />s btrckled from the eslimated cost the overestimation is 5549 (see Considerahon <br />~o'~sumplions - Pumping Without Three-Phase Service Onsile . Set Up Fee) <br />As With the Delta Gravel Pit Ill, further redudion in the cost overestimate can be <br />obtained by subtracllng the minimum pool volume lrom the lull poot volume and <br />then multiplying the cost of pumping per AF. II thiS is done, the cost of pumping <br /> <br /> <br /> <br />3 <br />