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Water Usage and Consumptive Use: <br /> The consumptive use at Loloff Pit is comprised of losses from evaporation,water retained in sand <br /> and gravel removed from the site,and water used for dust control.As the Loloff Pit will be <br /> continuously dewatered,no water will be lost to the stream system due to an intermittent fill. <br /> Evaporative Losses: <br /> The total exposed groundwater surface within the Loloff Pit for 2015 is 1.52 acres,based upon a <br /> recent(November 21,2014)survey. Exposed surfaces consist of the dewatering ditches on site. <br /> Table 1 provides monthly evaporative loss calculations for January through December 2015. <br /> Water Retained in Sand and Gravel Removed from the Site: <br /> Loloff Construction Inc. is projecting the removal of 500,000 tons of sand and gravel over the <br /> course of 2015.The sand and gravel will be removed in a de-watered state and will not be <br /> washed,as the primary use of the material is for road base.Per the Colorado Division of Water <br /> Resources General Guidelines for Substitute Water Supply Plans for Sand and Gravel Pits,the <br /> sand and gravel removed this site will have a 2%moisture content by weight,and the 2%will be <br /> charged in losses because the moisture is from a ground water diversion.Table 2 provides the <br /> monthly consumptive use calculations for January through December 2015 based upon projected <br /> production levels.Monthly reporting to the Division of Water Resources will include sand and <br /> gravel production for all material crossing the scale leaving the Loloff Pit,with corresponding <br /> water consumption. <br /> Dust Control: <br /> Loloff Construction Inc.will use a water truck for dust control at the site. While actual use of <br /> water is dependent upon weather and production activity,the projected daily usage is between <br /> 2,100 gallons to 5,600 gallons per day.Table 2 provides the monthly consumptive use <br /> calculations for January through December 2015. <br /> Lagged Depletions: <br /> The IDS AWAS Model(version 1.5.84)was used to calculate lagged depletions to the Poudre <br /> River.The model was executed in Effective SDF mode,using a stream depletion factor of 60 as <br /> obtained from plate-6 of Hydrogeologic characteristics of the valley-fill aquifer in the Greeley <br /> reach of the South Platte River valley,Colorado(Hurr and Schneider, 1973,USGS Open-File <br /> Report: 73-124)as shown in Map 3 attached to this report. In addition to the projected depletions <br /> for 2015,past depletions back to January of 2001 were used as inputs into the model. <br /> Replacement Water Supply: <br /> The replacement of the Loloff Pit lagged depletions will come from two sources;yield from one <br /> share of Greeley Irrigation Company(GIC)and a lease of wholly consumable supplies from the <br /> City of Greeley. <br /> The share of GIC owned by Loloff Construction Inc. is certificate no.3391.As part of the share <br /> acquisition, lands historically irrigated under this share will no longer be kept in production, <br /> effectively removing approximately 8.5 acres of land from production under the Canal No.3,as <br /> shown in Map 4. In communications with the GIC, it appears that the deliveries on yield can be <br /> requested at either the 16t Street or F Street augmentation stations. <br /> Historical yields on GIC shares have been established at 10.3 ac-ft per share as part of 96-CW- <br /> 658(Poudre Prairie case)and confirmed is subsequent GIC change cases. Case 06-CW-040 <br /> further specified the distribution of yield on a GIC share between direct flow rights and releases <br /> WWC Water Resource Engineering <br />