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r Bradford Janes - 2 - February 2, 1990 ' Exhibit D - Mine Plan ' In order for the application to be consistent with Rule 2.1.2(5)(e) and to insure that the operator will be able to comply with the stated future land use and the applicable performance standards in Rule b of the Mineral Rules 1 and Regulations, please provide the following: 1. Under "Orientation" reference is made to a portion of permit M-78-12 ' being included in this conversion "as indicated on Exhibit C-1, Plat 1; Affected Lands Map." No indication or reference to Permit M-78-12 could be found on Exhibit C-1, Plat 1, please revise as appropriate; 2. "Current Conditions" The text of this section, as well as Exhibit C-1, Plat 1; appear to infer that areas of pre-law disturbance may be exempt from current reclamation"requirements. Any areas which have been redisturbed or utilized since the issuance of permits M-78-011 or M-78-012 must be reclaimed according to the appropriate provisions of the Act and rules and regulations. To clarify the status of the disturbed ' areas, a map should be provided which identifies all areas within the proposed new permit area which have been mined or otherwise disturbed since the issuance of Permits M-78-011 and M-78-012; ' 3. There is no discussion of surface ar groundwater control in the application. Exhibit G merely states that the ,operator is not expected to affect surface or groundwater systems, and in item 17 of Exhibit D - Mine Plan which states that a diversion will be created above the finished slopes to route upslope surface drainage to an established drainageway. In order to clarify potential impacts to the hydrologic ' regime, please address the following: a. Does the operator expect to encounter any groundwater during the excavation of the pits? If not, what information was utilized to draw this conclusion? b. If groundwater is encountered, what measures will be taken to ' prevent surface or groundwater quality degradation? c. Several surface drainages tributary to Bijou Creek flow through the proposed permit area. Will any flow over the disturbed areas reach ' these tributaries? Describe the control measures which will be taken to protect these tributaries? d. Will surface water flows enter the planned pits? If so, will the water be pumped out? How would the pumped water be disposed of? Pursuant to C.R.S. 34-32-117(g), please demonstrate how surface ' water quality will be protected during the operation and when pit areas are dewatered following precipitation and runoff events. e. Please provide the construction specifications, including cross sections and flow calculations for the upslope diversion channel. All permanent diversions must be sized to safely convey flows from the 100 year, 24 hour storm event.