Laserfiche WebLink
~II II~'~~II~II~~ I~~ <br />EUGENE M. SHEARER,P.E. <br />CONSULTING GEOLOGIST <br />5720 South Jasmine Street <br />Englewood,CO 80111-1525 <br />--- RECEI\/ED <br />(303)771-2371 <br />19December94 DEC 19 1994 <br />Mr. Bryan J. Archer Divisionolfvlineralsb~Ueolc <br />Sun Coal Company 9. <br />10200 West 44th Avenue, Suite 120 <br />Wheat Ridge, Colorado 80033 <br />RE: Conversion of the Northwest Sediment Tray to a Water <br />Control/Diversion Dike, Meadows No.l Mine (C-81-029) <br />Dear Bryan: <br />During the past year we have had many discussions about the <br />various reclamation efforts in process at the Meadows No.l <br />Mine. One of the efforts under discussion centers on Sun <br />Coal Company's obligation to remove, as circumstances <br />warrant, the system of laterals and collector ditches on the <br />"pit reclaim area". This removal process has been initiated <br />and the next step in the process involves the subject of <br />this letter. <br />Two drawings or maps accompany this treatise: one is titled <br />"PROPOSED MODIFICATION THAT CONVERTS THE NORTHWEST SEDIMENT <br />TRAP INTO A WATER CONTROL/DIVERSION DIKE", and the second is <br />titled "PIT RECLAIM AREA PRECIPITATION RUNOFF GATHERING AND <br />STORAGE SYSTEM". Reference will be made to these drawings as <br />the discussion proceeds. <br />Concern s, have been expressed from time to time by Division <br />of Minerals and Geology personnel regarding the erosion on <br />Collector Ditch M, shown at the northern part of the <br />Storage System drawing. Lateral K collected runoff from the <br />topographically higher terrain to the east as well as most <br />if not all the runoff collected by Laterals I and J and <br />discharged these volumes into Collector Ditch M. Ditch M <br />drains down a Fairly steep slope to the west, and it is not <br />surprising that the runoff waters eroded and entrenched this <br />feature. Revegetation of the reclaim area is accomplishing <br />favorable results. This vegetation is considered a deterrent <br />to erosion by surface water. <br />