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x.i ~II ~II~I~~II~~~~~I~ sss .a,.~...'44" ~ "m~ ~.., a M !'tichardFox ~~ f'~l\IF-D liio o,t~c~i s. ~ pRR 1 ~ 1~9F~ sroomfield. co 8002x1065 Division of Minarets t+. Ge°i°gy April l1, 1996 Mr. Allar c. soreruon Dlvhbn orMlner.l..na ceole8,y Departinent of Nsttaal Reeoutoes 1313 Sherman St., Room 21 s Donver, CO 80203 Re: water spray Lend Application Design. clold Hill Mill File No. M-94117 Deer Mr. Soterreon: We have reviewed the ureter p~purg system at the (fold hill Mill and propose the following pro®atn w establish a lend application of Hazel A wakr on the arts above the tailings pond. Werer currerrtly u pumped from the Hegel A end is pumped into two process water tanks at the west end of the mill building When the tanks ere fuQ wafer overflows the tanks and is piped W the tailings pond by gravity flow thrwg}t a 3-inch line. Water for mill makeup water u pumped ftoan the two tanks (approximately 16,000 gallon each) W various mill eireuib as ti ash wales ~P• We plan to replumb the water Doming Rum the ranks after the process water pump so that the water will be ptarrped thrortgtt a 2-inch line to three parallel distribtrtion linty there will cordain impulse type sprudden with a throw radius of approximately 20 to 25 fat. The sprirtkleas will be placed every ~afaet along the three lines. The lines will be spaced approximately 30 feet apart The head spacing will allow some overlapping coverage. Water flow will be Gem 60 to 75 gallons Pe minute. &atimeted pumped flow from the Haul A is 50 to 75 gallons par minute. W star from the tanks can also be diadterged into the tailings pond through the main 2-inch lateral. The process tanks will rte used es surge tanks to even flow to the lerd application and provide stooge for Hazel A wear whtn the ground is aeGaated. If the tanks are fu4 water can still overflow to the tailings pond as it does now. tt there is arty other information that you nood, please cell. Sinarel~y. ~~ r' 1.~'~'"""'y ~p,~, Richard Fox