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with the proposed tailings waste stream. The finer portions of the waste stream are deposited behind the leachate <br />collection barrier and are covered in water. Exhibit E shows the details of the tailings impoundment structure. <br />6.3.3(1)0 <br />The only area subject to significant disturbance is the Tailings Impoundment. For detailed dimensions refer to <br />Exhibit E. <br />6.3.3(1)(g) <br />The access road is a public, county non-maintained road (see engineered evaluation concerning permanent man- <br />made structures in Exhibit L). Currently, the road averages 10 - 12' in width and is constructed of materials <br />developed during its construction. There is no evidence of any improvements or maintenance of this road in several <br />decades performed by the County. This roadway does not continue through to any other major road systems. <br />Occasionally, perhaps once annually depending on conditions, the operations will employ a road grader to maintain <br />the road. This could only be seen as a drastic improvement over the currently existing condition of the road. Clear <br />Creek County Road and Bridge Department publishes standards and issues permits for how the maintenance is to be <br />done. No new roads are currently forecasted to be constructed. <br />It shall also be noted that storing or parking equipment on public roads is not permitted. <br />6.3.3(1)(h) <br />Water- for the operations is obtained from the municipal water supply of the City of Idaho Springs via a'-Water Fill <br />Station Usage Permit". It is delivered to the site by hauling in a water truck and is stored in an open, lined reservoir <br />(as described in 6.3.3(l)(e)) for use in operations. Additionally, all process water is reclaimed/recycled by the <br />means of a pontoon mounted pump or sump pump from the impoundment. <br />Water consumed by the operation consists of losses due to evaporation and interstitial water in the porous spaces <br />between the grains of waste (which may be impossible to remove due to capillary pressure). Water consumption is <br />estimated at 2,500-5,200 gallons per day by evaporation and capillary losses (depending on stage of impoundment <br />buildout). Additional water of 100-200 gallons per day may be used for dust control on company traveled roads. <br />As it will be described later, there is the potential for rainwater to become co-mingled with process water in the lined <br />Tailings Impoundment and Water Storage Pond. To compensate for this, Venture Resources will purchase a <br />Temporary Substitution TVater Plan contract with the Clear Creek County Water Bank. <br />6.3.3(1)(i) <br />Impacts to groundwater will be controlled by storniwater management, utilizing a composite liner system in the <br />Tailings Impoundment, recycling of leachate to the process stream, utilizing a liner in the Water Holding Pond, and <br />the chemical control of the process water quality as enumerated in 6.33(1)(m). <br />A stormwater management plan (SWNT) has been created specifically for this operation and a permit has been <br />applied for with the Colorado Water Quality Control Division. A copy of the SWMP is attached as an appendix to <br />this Exhibit C. <br />Temporary storm water management controls using silt fences and/or straw bales will be used during all phases of <br />excavation. <br />Hydrologic Data <br />Clear Creek is the significant surface water feature within 2 miles of the proposed facility; located 2 ,800' to the <br />south and 1,000' in elevation below the Tailings Impoundment affected area. <br />There are no perched zones or traditionally defined aquifers in this mountainous area. The site is completely <br />composed of crystalline Precambrian rocks, i.e. gneisses and schists, and tertiary intrusive rocks such as quartz <br />monzonites overlain by 0-24" of unconsolidated material. <br />Page 5 of 37