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iii iiiiiiiiiiiuiii <br />STATE OF C~OLC~I~UU <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmenl of Natural Resources <br />1313 Sherman St., Room 215 II~ <br />Denver, Colorado N0203 <br />Phone: 13031 866-3567 <br />FAX: 13031 N32-8106 <br />DEPARTMENT OF <br />NATURAL <br />DATE: March 19, 1997 RESOURCES <br />Roy Romer <br />TO: Byron Walker Inver^or <br />lames S. Lochhead <br />I ~ EKeculive DireUOr <br />FROM: Dan Hernandez ~ 111 rnichael B. Long <br />Dwision Director <br />RE: Date for Submittal of Annual Hydrology Report, Cyprus Empire <br />Corp., The Eagle 5 & 9 Mines, Permit No. C-81-044 <br />Thanks for the March 17 memo regarding submittal of Cyprus Empire's AHRs. Here <br />are my thoughts: <br />The period for Cyprus' collection of groundwater and surface water data <br />must be based upon the water year (October 1 through September 30), <br />unless otherwise approved by the Division. If CypnLS wishes to base its <br />data collection period on a different year, Cyprus should so request in <br />writing, and include in the request its basis for requesting a year other <br />than the water year. The Division would review this request, and <br />decide whether to grant it. The Division would not be compelled to <br />approve this request. <br />2. Cyprus should submit its AHR within the eight-week period following <br />the end of the approved data collection period. For example, if the end <br />of the data collection period is September 30, tlhe AHR should be <br />submitted no later than November 30. This will give us 30 days before <br />the end of the data collection quarter with which the AHR is submitted <br />to review the AHR and ensure all required sampling and analyses are <br />being done. Waiting too long for AHR submittal can allow erroneous <br />sampling being conducted by the operator to contin,1e for half a year or <br />more, if not caught soon enough. <br />The data collection period, the basis for choosing a collection period <br />other than the water year (if applicable), and the date for submittal of <br />the AHRs should be made part of the permit's text. As you mentioned, <br />this can be done with a Minor Revision. <br />Thanks for working to resolve this problem. I appreciate it. <br />hf. \oss\ l®g\ submtAFIIi.DIH <br />