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b Applegate <br /> Gro u p, Inc. <br /> Water Resource Advisors for the West <br /> ' Permit Amendment <br /> Permanent Ground Water Mounding Mitigation Plan,Brannan Pit 29 <br /> ' Permit No. M-1980-183 <br /> ' The following is the permanent plan (the Plan) to mitigate the ground water mounding as <br /> stipulated in the Final Order of the Mined Land Reclamation Board pertaining to Pit 29 (Permit <br /> ' No. M-1980-183) dated November 13, 2014. The Plan has been designed to eliminate flooded <br /> conditions on the Einspahr property (immediately to the south of the north cell of Pit 29) within <br /> ' 180 days after commencement of the Plan. Implementation of the Plan will commence within 30 <br /> days of approval by the Colorado Division of Reclamation, Mining and Safety(DRMS). <br /> Plan Description <br /> The Plan has been designed to reestablish the ground water levels that existed prior to mining. The <br /> estimated pre-mining ground water levels are shown on Figure 1. The map is taken from the Pit 29 <br /> original application entitled; "Ground Water Contours", prepared by Blatchley Associates, Inc., <br /> 1980. Also shown on Figure 1 is the existing water level in MW-4. <br /> On November 19, 2014 a survey was performed to determine relevant elevations to assist in the <br /> design of a mitigation system. The results of the survey are shown on Figures 2 and 3. Figure 2 <br /> shows the land surface elevations and Figure 3 shows water surface elevations. Additionally, we <br /> obtained the LIDAR topographic data which is shown on Figure 4. <br /> ' The elevation survey of the water levels shows the following: <br /> ' • The water level in the pasture was at 5011.1 feet. The depth of water in the center of the <br /> pond was about 0.6 feet based on the measured land surface elevation of 5010.5 <br /> • The ground water level in MW-4 was 5009.3 <br /> • The ground water level in MW-8 was 5010.3. Note that this water level was taken two <br /> ' days after the other levels and may not correlate with the other elevations. <br /> 1490 W. 121`Avenue,Suite 100 118 W.60 Street,Suite 100 <br /> Denver,CO 80234 Glenwood Springs,CO 81601 <br /> ' 303-452-6611 <br /> www.applegategroup.com <br />