2012-10-01_REVISION - M1977310 (10)

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JD -6 Mine Environmental Protection Plan 38 lysimeter data in the area. The alluvium and landslide deposits are primarily unsaturated and are not considered a source of groundwater. Groundwater typically occurs at the base of the Salt Wash Member of the Morrison Formation, perched above the low- permeability Summerville Formation. Avery (1986) referred to the Morrison Formation as the "M" aquifer and defined the underlying Summerville Formation as the lower confining layer for the "M" aquifer. Groundwater levels were noted in 20% (79 of 404) of the exploration holes drilled on the JD- 6 lease. Most exploration holes toward the north side of the project were dry, while more of those in the down -dip (south) direction contained some water. The water levels in exploration holes give an abstract indication that the local groundwater gradient is down -dip (south- southeast) in the direction of the majoral structural syncline that dominates this fault block of Monogram Mesa. Upgradient of the JD -6 lease, the underground workings at the Mineral Joe Mine have been dry for decades, due to the groundwater divide and lack of recharge area on the escarpment of Monogram Mesa. 9.4 Inventory of Wells and Water Use 9.4.1 Well Inventory Wells drilled in Colorado are registered with the Colorado Division of Water Resources (DWR), and are a matter of public record. DWR records list 14 unique wells within two miles of the JD -6 Mine permit boundary, most of which are monitoring wells associated with the proposed Pinon Ridge Mill west of the JD -6 mine site. One of these 14 wells is listed as abandoned (Table 6). Of the remaining 13 wells, ten are located more than one mile from the JD -6 Mine permit boundary. The nearest well is located 0.585 miles (3,089 ft) from the JD -6 Mine permit boundary. All of the listed wells have perforated casing and have a well depth of 106 feet or more. The depth to water of each well ranges from 21 -379 ft. The yield of the wells ranges from 8 -889 gpm. 9.4.2 Project Water Requirements Project water requirements are estimated at 60,000 gallons per year during the development phase and mining phase of the project. The source of water for the mining activities will be the Naturita Municipal System. No adjudicated water rights will be injured by the project. The water provided from offsite would be used for equipment washing, toilets, and shop purposes. Drinking water for site workers is provided from offsite bottled water sources 4148A.120927 Whetstone Associates •