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III IIIIIIIIIIIIIIII COLORADO WESTMORELAND INC. 999 P. O. Box E, Paonia, Colorado B142B ~ 303-527-4135 May 3, 1982 a~_ ~ " ~,,.~ ..c_ Ms. Sand Emrich ~ r ~ -~ ~P.'~") f=: °_CL;,i,;,"~.TIO^l Reclamation Specialist - -- ~--- -- Colorado Mined Land Reclamation Division 423 Centennial Building 1313 Sherman Street Denver, Colorado 80203 Re: Permit #C-038-81, Stipulations 23 and 24 Dear Sandy: As discussed in the meeting with Jim Pendleton on March 3, 1982, Colorado Westmoreland Inc. requests an extension of the time deadlines set forth in these stipulations. The request is made because Phase II of the geotechnical and stability analysis of the surface facilities has not shown that imminent danger has been found at Orchard Valley Mine. The analysis of the stability and drainage have shown some problems to exist, but failure would not result in danger to the health or safety of the citizens of the State of Colorado. Rather than immediately beginning Phase III as directed in the stipulation, CWI proposes to do the following. A prediction of the consequences of a failure in the diversion chan- nel was analyzed and submitted to the Division on April 15, 1982. This work was performed by Geo-Hydro, Merrick and Associates and CWI engineering. CWI further proposes that additional monitoring be done on the areas as outlined in the Phase II stability analysis report. The monitoring would be through use of inclinometers and pore water pressure measuring devices. Geo-Hydro will direct the monitoring effort and analyze for water and movement. Reports on this monitoring will be submitted to the Division on a quarterly basis. CWI personnel will monitor the instruments on a monthly basis. The existing stability analysis bore holes will be monitored for ground water on a monthly basis. This information will be submitted to the Division on a quarterly basis. If CWI or Geo-Hydro suspects an im- minent hazard, CWI would take immediate measures to protect the health and safety of the citizens and protect the environment. Because of CWI's requirement to stockpile coal on the crushing and screening level, CWI will do the following additional requirements. CWI is in the process of installing warning signs at the bottom of the crushing and screening level. These signs will warn undetected persons entering the mine site that the slope is • potentially unstable and may constitute a hazard. suesio~aRr of WESiMORELPNO COPL COMPP NY { '. i ;