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RICHARD D LA h1M G u~emor ~~ JERIS 4 DA NIG LSON Stale Engineer OFFICE OF THE STATE ENGINEER DIVISION OF WATER RESOURCES ~3i3 Sherman Street-Room 8~8 Denver Colorado 80203 1303)866-3581 ~. ~~ Soo. ~ lW lira ~~, sEa i ;, '~~a:: I•iEi IURANDUhI hdrINED LAND RECLAMATION DIVISION September 12,1985 T0: Peter V. O'Connor, Mined Land Reclamati n Dep~-tment FROfI: Hal D. Simpson, ueputy State Engineers . ~(•/-~" SUBJECT: Gold Hill hurling Company, Cash Mine Amendment, h183-141 As requested, we have rEVlEwed the aoove rererenced amendment to an application to mine gold ana silver on 7.625 acres one-half Illile east of Gold Hill, Colorado in boulder County. The applicant plans to use 20 snares of the Lefthand Ditch Company to supply water for the operation ana to store some df that water temporarily in the time and 'raynona hlines to use in the milliny operation oetween November 1 and play 31 each year. In order to use the Lefthand Ditch Company water in the rnilling operation, it must be decreed for industrial or commercial use. A change in the decree would be required if the water is not decreed for these uses. Gold Hill Mining Company would be limited to the historic comsumptive use of Lefthand Ditch Company v,ater not the actual diversions. A consumptive use analysis would be required to determine the historic conswnptive use. We advise uold Hill f•lining Company to Mire a water consultant to do this. Unless the Time and Wynona hlines are cry, we would be opposed to storing water in them. If the mines have water in them already, it would be very difficult to keep track of the applicants water after it enters the mine. The applicant would not be able to pump out all the water pumped in unless they could snow that their water could not seep out of the mine into the system. In summary, we cannot recommend approval of this amendment until the above mentioned issues are addressed. HDS/JChl:pdt/SolbH cc: Alan Berryman, Div. Eng. h.organ Eentley