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. ~ :~ • • III IIIIIIIIIIIII III ~~ <br />• ~~ "" ENGINEERING & SURVEYING COMPANY ~~, <br />BOX 674 • 443 DODGE DELTA. COLORADO. 81416 303-874-7593 <br />7881-85 <br />August 16, 1985 <br />Mined Land Reclamation <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />ATTN: Randall Frice <br />~~~~~~~~ <br />AUG 1 G 1985 <br />MINED LAND <br />RECLAMATION DIVISION <br />RE: Bear Mine No. 3, Bear Coal Company, Somerset. Colorado <br />Subsidence Monitoring Report <br />Ute Engineering has completed the monitoring of subsidence <br />stations far the Bear Coal Company. In the interest of time, <br />we have been instructed to submit this report directly to <br />MLR. <br />Our monitoring this year, August of 1985, utilized different <br />• equipment than used in the past. Also, we established new <br />monuments to mal-e repeat monitoring mare reliable. The new <br />monuments consist of .=-inch diameter steel pipes with a fl- <br />inch square steel plate and 5/8-inch bolt to accommodate the <br />surveying instrument. The new monuments were installed <br />adjacent to the existing monuments. <br />Fallowing is a listiy~ng of X,Y and c' coordinates of each <br />station as submitted by Ute in the past: <br />Station <br />• <br />D-11 <br />D-12 <br />U-7 <br />U-T2 <br />U-1 <br />U-4 <br />U-5 <br />U-9 <br />U-A1 <br />U-2 <br />U-3 <br />U-7 <br />X <br />405,064.5683 <br />405,417.1669 <br />403,642.2850 <br />400,581.7321 <br />400.464.0142 <br />400,429.3694 <br />399,021.3981 <br />401,047.6018 <br />400.501.3818 <br />400.631.2794 <br />399,662.0110 <br />403,692.1757 <br />Y <br />1,440,552.476 <br />1,441.624.3050 <br />1,441,660.6704 <br />1.439.725.6010 <br />1,440,849.5613 <br />1,440,494.6551 <br />1,442,448.2534 <br />1,442.611.5893 <br />1,441,147.2172 <br />1,441,79J.8453 <br />1,441,7~~5.2603 <br />1,441,660.5388 <br />Z <br />Survey 6-10-8_T• <br />6184.6300 <br />6192.3500 <br />6549.5726 <br />7694.4169 <br />7826.1051 <br />7748.7051 <br />7791.0127 <br />NONE <br />NONE <br />NONE <br />7743.9481 <br />Survey 7-23-84 <br />6549.5900 <br />