GENERAL31007 - Laserfiche WebLink

Home Browse Search

. ~~~ RF_CEIVED SENECA APR 101991 Coal Company ~II II~~I~~I~~'~~ ~I~ Seneca Coal Company Division o~ Nunelals ~ i;eology April 7, 1997 Ms. Erica Crosby Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, CO 80203-2273 R8: Seneca II-W Mine Permit C-82-057, Tie-ACross Haul Road Slide Notification Dear Ms. Crosby: This letter is to document my phone conversation with Mr. Larry Routten on Friday, April 4th, notifying the Division of the slide which occurred within the Seneca II-W permit boundary along the Tie-ACross Haul Road. The approximate location of the slide can be located on Exhibit 13-11.6, Tie Across Haul Road, "As-Built". The slide is along the top edge of the road cut between stations 155+00 and 157+00. The bottom portion of the slump had blocked a section of TAHRD-15. The weather on Friday was a combination of rain and snow throughout most of the day. The ground conditions were very wet and muddy. we were unable to detect where the water was exiting at the bottom of the slope because the entire area was wet. The furthest extent of the slide was approximately 50 feet from the three pole wooden powerline structure located at coordinates of 5,600 S and 6,325 W. Seneca Coal Company is the surface owner for the area both inside and outside the existing permit boundary. we placed a few visual monitoring stakes at the top of the slide to detect whether the slide is still moving and monitor it on a daily basis. To prevent any additional water from further saturating the slide area, we cut a diversion ditch around the perimeter of the slide with our D-5 dozer on Saturday morning. We also cleaned up the blocked section of TAHRD-15 to establish positive drainage again. The slide was monitored on several occasions on Saturday and Sunday and there appears to be no additional movement at the present time. ~~ Seneca Coal Company • P.O. Drawer D • Hayden, Colorado 81639 Telephone (970) 276-3707 • FAX (970) 276-3014