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l estimated to be about the same for the Horsfal Flat location as at any of the other location s that were evaluated. ~ ASf~`1 ~~qq rv~q, The gently sloping topography of the Horsfal Flat site will; reduce operating costs by accommodating the construction of a~ hillside plant with a straight-line flow sheet that wi11~ _.,.}.,_ eliminate the costly elevation of ore and material. Geologi-+ ~ L>~~ tally, the millsite foundation will be supported by stable, ''""~Q ~j,(,uv~/Jti•-y Boulder Creek granite. A review of the historical records, and a field examination of the area did not disclose any ll ff underground mine workings that extend~3 beneath the proposed: SL~yy~(~ milling complex. The nearby Oscar mine shaft is a shallow, caved discovery shaft, without any lateral workings; and the Wynona mine workings are inclined towards the northwest, away from the millsite. Perhaps the major reason for the final sel=ction of the Horsfal Flat site, was its suitability for the safe, effi- cient, and environmentally acceptable disposition of the~~ tailings that will result Erom the milling process. Other mountain sites that were examined did not afford the opportu- nity to construct a hillsi~'e tailings structure, with a limited upstream drainage area. Finally, constructing a tailings embankment northeast of the proposed mill building will have less visual effect on the landscape than any of the other possible mountain sites. Water rights for the mill have been obtained by the purchase of 20 shares of stock in the Left F?and Ditch Company, which entitles the Go 1d Hill Ventures Limited Partnership to a pro-rata share of the water available from Left Hand Creek. Based upon the historic diversions associated with these water shares, the milling complex will be entitled to a minimum of 10.4 acre feet of water per year in a dzy year, and a maximum of 22.53 acre feet of water in a wet year. Golrl Hill Ventures intends to divert the water associated with ~.~•se shares from a point of diversion located on the south 1,i~k of Left Hand ^r,-~k, on property which it is presently buying for this ~~.rFOSe. These diversions wi 11 be made at a maximum rate of 50 gallons per minute durin~i the irrigation season, which extends trom April 1 to October 31. A continuous measuring device will be installed at the point of diversion. Access will be granted to the Left Hand Ditch Company's representa- tives, and to the SCate of Colorado's water officials, to enable them to monitor the amount of water being diverted for milling operations. From the point of diversion, the water will be pumped 3,900 feet up Akins Gulch in a 2 i~~ch diameter pipeline, that will be situated on property be rg purchased by the Gold Hill Ventures Limited Partnership. At a location 45 feet below County Road No. 52, the water line will enter the portal of the Time mine's adit, which passes beneath the county road, and extends 395 feet in a southeasterly direction. The Time mine is connected with the first level of the Wynona mine by way of a 50 foot deep winze. By constructing a bulkhead in the Time mine, and pumping the water from Left Hand Creek behind this bulkhead, both tl~e Time and Wynona mines can be used for the underground storage of water for milling pur- poses. Together, these two mines will have sufficient capac- ity to store enough water to carry the milling operation through the period between November 1 and May 31. Mill water will be drawn from these mine workings by pumping water out of the Wynona mine shaft. The Gold Hill ventures' concentration mill will be housed in a\ metal building 70 feet wide, 120 feet long, and 30 feet high, with three separate working levels. A metal frame building will be constructed on a concrete foundation with an upper elevation of 8,590 feet, an intermediate elevation of 8,585 feet, and a lower elevation of 8,575 feet (see Maps 82 and E2). The upper terrace will support the crushing plant and