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TO <br />February 14, 2013 <br />Gold Hill Mines, Inc. <br />P.O. Box 1523 <br />Longmont, Colorado 80502 <br />(303) 651 -2985 <br />Colorado Division of Reclamation, Mining and Safety <br />Mr. Michael A. Cunningham <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 8020 <br />Dear Mr. Cunningham, <br />We are requesting the elimination of the following water sample locations: <br />1 20 <br />Gold Hill Mill, Permit No. 1994 -117 <br />Re: Technical Revision - Water Monitoring Locations and Sample Parameters <br />Numerous water monitoring parameters have been analyzed in the past several decades <br />that have been below minimum detectable limit (MDL), or are of questionable value in <br />evaluating the water quality associated with the Gold Hill Mill and the integrity of the mill's <br />tailings pond liner. Because of this history, Gold Hill Mines, Inc. is requesting a revision <br />of the water monitoring requirements for this permit. <br />For the purpose of water quality analysis and in order to detect any increases in these <br />elements in the water samples, I am requesting that the following elements be sampled: <br />the dissolved metals of Arsenic, Cadmium, Chromium, Copper, Iron, Lead, Manganese, <br />Selenium, and Zinc, plus pH, TDS, temperature, and conductivity at all surface and <br />groundwater sampling locations. <br />(LH) Left Hand Creek — Water from Left Hand Creek is the only legal source of <br />appropriated water for use in the Gold Hill Mill. There is no reason to continue <br />sampling this site, since there are literally dozens of water samples that have <br />been taken for years from Left Hand Creek by the EPA, the State of Colorado's <br />Water Quality Control Division and the Boulder County Health Department. These <br />agencies have a very complete record of the water quality in this creek. This <br />location is not in the Gold Hill Mill's drainage. Nothing has ever occurred at the <br />Gold Hill Mill that has affected the water quality in Left Hand Creek, and there is <br />no reason to continue sampling this site. <br />(WY) Wynona Mine — The water in this mine has been sampled in the past, <br />because it is the permitted site for storing water pumped up from Left Hand Creek <br />that will be used to process ore in the Gold Hill Mill. Until the water line is restored <br />