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BTU Empire, Eagle 5 Mine,~e. 3 <br />Just north of the first sinkhole noted above we estimated ourselves to be above and <br />between the 3Td west, and right mains of the Eagle Mines at N 40 26 02 W 107 39 10 <br />at 6,330 ft.; a small trough /sinkhole noted at N 40 26 02 W 107 39 11 at 6, 333 ft.; <br />similar features are found scattered at 200 to 500 feet north to northwest of the tower; <br />a northeast facing slope with sandstone outcropping had a surface, sandstone outcrop <br />crack 5 to 7 inches wide at N 40 26 02 W 107 39 10. These features described above all <br />appear to be located on BTU Empire surface land ownership. <br />This area described above, generally north and west of the tower location out to downhill <br />slope breaks, needs to be evaluated for possible remediation of slip & fall hazards <br />associated with these small openings. Disturbing active animal burrows should be <br />avoided to the extent possible, unless they represent a serious slip and fall hazard. <br />These openings have created excellent habitat for badger sized mammals and smaller. <br />We continued to inspect downhill west, and southwest of the tower location looking for <br />subsidence features. Land ownership here includes BTU Empire, State of Colorado, and <br />Mr. Barker. Steel casing from presumably an abandoned monitoring well was located at <br />N 40 26 06 W 107 39 16 at 6,277 ft. The casing appears to be sealed at 14.5 feet below <br />ground level. USGS-1918 (or 1908) section comer at N 40 26 06 W 106 39 16 at <br />6;287 ft. with EPP Associates Survey markers from recent (2-3 years) surveys. <br />We observed a small sinkhole 2 to 3 feet deep at this location, which could be associated <br />with a former exploration drill pad, and this location is just downhill and southwest of the <br />EPP survey markers. We inspected the remainder of this area and saw no really obvious <br />surface subsidence features. <br />We attempted to reach additional affected areas west of the Yampa River on the <br />afternoon of November 18, but decided to wait until the next morning due to time of day. <br />This concluded the inspection on November 18. <br />On November 19 we inspected the affected surface areas above Eagle 5 & SA Mines <br />proposed"for release, west of the Yampa River. We were able to drive onto and through <br />Mr. Barker's property, and made stops and observations at the following {in order <br />observed): <br />North end of affected area between 2°d west mains, and ls` north at N 40 26 275 <br />W 107 39 985 at 6,517 ft.. We walked this area in orientation above the mine workings <br />looking for subsidence features. We found no obvious surface subsidence features here. <br />