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ROCKY MOUNTAIN <br /> R E S O U R C E S <br /> December 28, 2017 <br /> Amy Yeldell R1!CL'D <br /> Colorado Division of Reclamation, Mining and Safety <br /> 1313 Sherman St., Room 215 OEC 29 2017 <br /> Denver, CO 80203 DIVISION <br /> OF RFCLAMATION, <br /> MINING SAFETY <br /> RE.Mid-Continent LST,Permit No. M-1982-121, Quarry Boundary and Survey <br /> Dear Ms.Yeldell, <br /> In response to your letter,RE:Mid-Continent LST,Permit No. M-1982-121, Commitment Until <br /> Amendment is Submitted(Included herein), sent January 17, 2017, Rocky Mountain Resources(RMR) <br /> would like to provide the following information, and propose a resolution to the AM-2 acreage issue. <br /> RMR contracted SGM Engineering to survey the current quarry area at the Mid-Continent quarry in <br /> September of 2017. SGM surveyed the quarry on September 28, 2017,created a topographical map of <br /> the surveyed points, and delivered information on the area of disturbance and the size of the permit <br /> boundary we believed matched the CO DRMS permit boundary.The information was delivered to RMR <br /> in mid-December 2017. <br /> After reviewing the data, and going back into our records to review documents relating to the approved <br /> AM-2 boundary,we realize there is a discrepancy between the currently approved AM-2 boundary and <br /> the boundary we thought was the approved CO DRMS boundary.You have commented on this apparent <br /> difference in your previous letters.The boundary RMR believed to be the approved CO DRMS AM-2 <br /> boundary appears to be a proposed revision that was not approved by the DRMS. As such,the current <br /> boundary is the AM-2 boundary depicted in the figures in the included letter(pg. 3 and pg. 5 in green), <br /> RE.Mid-Continent LST,Permit No. M-1982-121,Approved Acreage and Map Boundaries, sent May 2, <br /> 2016. <br /> RMR has survey point information for the proposed revision boundary, but does not have survey point <br /> information for the approved AM-2 boundary currently. RMR was able to recreate the AM-2 boundary <br /> with good accuracy using the visual image provided in RE:Mid-Continent LST, Permit No. M-1982-121, <br /> Approved Acreage and Map Boundaries(pg. 5)and Google Earth. Figure 1 below shows the recreated <br /> AM-2 boundary in comparison to the proposed revision boundary.The currently disturbed mining area <br /> falls within the limits of both boundaries,except for the previously discussed surface disturbance (0.287 <br /> acres)on the eastern edge of the mining boundary.The calculated area of the AM-2 boundary is <br /> approximately 38 acres.The calculated area of the proposed revision boundary is 43 acres.The <br /> calculated area of the total affected land to date is 20.8 acres. <br /> 1 <br />