Laserfiche WebLink
• iii iiniiii~iiii iii • <br />DEPARTMENT OF NATURAL RESOURCES <br />Davitl H. Getche5, Etecutive Director <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTON, Director <br />Richard D. Lamm <br />Governor <br />DATE: January 14, 1987 <br />T0: Peter V. O'Connor <br />FROM: Steven G. Renner <br />RE: National King Coal, Fourth Quarter Subsidence Monitoring Report <br />Per your request I have reviewed the fourth quarter subsidence monitoring <br />report for the King Coal Mine. <br />It appears that monitoring for the fourth quarter, 1986, was completed as <br />required by the approved permit. My comments are as follows: <br />(1) The cover letter states that subsidence and ditch monitoring reports <br />for "the past two quarters of 1986" were enclosed, however only the <br />fourth quarter, 1986, report was submitted. <br />~) All survey data which has been gathered during the permit term should <br />be reduced, tabulated and submitted to the Division. <br />~) All survey data should be accompanied by subsidence profiles developed <br />between monitoring sites. The purpose of this submittal is to quantify <br />subsidence processes at the mine site. <br />(~ A map which shows the locations of the two new subsidence monitoring <br />sites should be submitted, along with a diagram which shows how these <br />monitoring points were constructed. <br />/b do <br />6741E <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />