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Exhibit G — Water Information <br />'...that lining mined gravel pits has almost unmeasurable influences to the <br />surrounding groundwater hydrology and does not change hydraulic gradients <br />beyond the variations that would normally be expected in the geologic settings <br />associated with the operation.' <br />We anticipate the OMLR will concur with this analysis. Once operations near completion <br />of any Tined basin, the Colorado Department of Water Resources Office of the State <br />Engineer (OSE) will be contacted and the lined basins will be approved prior to use. <br />The OSE approval letter will be provided to the OMLR as a condition of the permit and <br />satisfaction that the lined basin has met the specifications necessary to pass a liner test <br />as part of the OSE approval process. <br />(1) Operations will not adversely affect surface and groundwater systems. The <br />manner and method of extraction is detailed under Exhibit D — Extraction Plan. <br />Anticipated effects on surface flows are anticipated to be minor to none. <br />Essentially, the flood plain covers the property and unless under flood <br />conditions, upland overland flows are generally diverted by existing access roads <br />or grassed drainage channels, or drain internally into existing or planned basins. <br />(2) (a) Please refer to Exhibit C-1: Existing Conditions Map. <br />(b) The known aquifer under the site is the stream alluvium. <br />(c) Discharge water will be dissipated with hard surface riprap or established <br />grassed waterways. Other waters are retained by internal pit drainage, directed <br />by vegetated berms or established waterways or through the maintenance or <br />establishment of a stabilizing cover of vegetation, or as otherwise established <br />under an approved Colorado Department of Health stormwater permit and/or <br />stormwater discharge permit. <br />(3) The three components of the project water requirements are water removed with <br />the product, dust control, and evaporation from exposed ground water. Dust will <br />be controlled using truck sprinklers, and the estimated frequency is one load per <br />day. At 2,500 gallons of truck capacity, the annual demand is 2.80 acre-feet. <br />After the water table is encountered, the water removed with the estimated <br />800,000 tons of product is 23.55 acre-feet per year. The estimated net <br />evaporation is 1.419 feet per year. At the maximum potentially exposed ground <br />water of 62.81 acres, the annual evaporation is 89.13 acre-feet. The monthly <br />distribution of these estimates is shown in the following table. The reclamation <br />plan provides that the pits will be lined after being mined. The lined pits will not <br />require replacement water and will be used for storage. There may be incidental <br />demand for water to establish vegetation on the site after lining is completed. <br />However, the ultimate demand for water will be zero. <br />Varra Companies, Inc. Permit M-2010-049 2 <br />Western Sugar Reclamation Land Development Project OMLR 112 Permit Amendment 2015 <br />