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• IT€C €nvironmental Colorac III Wm. Emest Simmons, Consultant 7071 Rh Street, Sui[e 3120 Denver, CO 80202 April 15, 1998 IIIIIIIIIIIII III STATE OF COLORADO DIVISION OF MINERALS AND G);OLOGY Department of Natural Resources 1313 Sherman St., Room 215 Denver, CO 80203 • ~,~ ~~ Telephone (303) 2961762 Fax (JD3) 296-1783 RECEIVEC3 ApR 17 1996 Division of Minerals & Geobgy Re: Compliance with Water Balance Techniques applied to Crold Hill Mill, Boulder, Co M-94-117 To Whom it May Concern: ITEC Environmental Colorado Inc. has been present at the Gold Hill mill site beginning on March 30th, 1998. Purpose for ITEC's presence is to satisfy compliance with water balance and demonstrate good faith by ITEC, a prospective operator, under permit #M-94-117 The March 31st, 1998 inspection noted potential problems most of which were caused by weather and improper drainage of standing water. The priority was to have the closed circuit (pond -Hazel "A" -pond) rehabilitated and functional, in a closed loop. Secondly, to concentrate our efforts on the evaporation system much of which was below ice covering the pond. The third item that required immediate attention was the first quarter water sampling, quarter ending March 31, 1998. On March 31st, 1998 Bruce J. Bevirt, Owner of Environmental Investigations, Inc. took water samples from four (4) wells, Hazel -"A" water, pond water and Left Hand ditch, east of bridge at permitted diversion area. On Apri12, 1998 two (2) persons were given a temporary assignment to secure the piping system, repair all leaks and potential discharges and to bring the water balance into compliance prior to April 16, 1998. An April 3, 1998 inspection by Wm. Ernest Simmons did not detect any discharge from the approved circuit. The main pump behind the Hazel "A" bulkhead was sufficient to maintain freeboazd but was worn and could not pump enough water to reach -12" from the dam crest.