Laserfiche WebLink
;. <br />C crn~us <br />"~ Orchard Valley <br />November 28, 1990 <br />Ms, Susan McCannon <br />Senior Reclamation Specialist <br />Colorado Mined Land Reclamation Division <br />215 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />Dear Ms. McCannon: <br />RE: West Ridge Waste Pile Repair Plan <br />Permit No. C-81-038 <br />III IIIIIIIIIIIII III <br />Cyprus Orchard Valley Mine <br />P. O. Box 1299 <br />Paonia, CO 81428 <br />Phone: 303-527.4135 <br />Fax: 303-527-2234 <br />Y ... _.6 .. ~:~ <br />n'^v ~ ^ ~^ <br />J U V IJ.r~ <br />~b II1~~ LGlld <br />P,~cl~ma;;on Ji~~iaion <br />This will serve to respond to the Division's letter of October 29, <br />1990 requesting an update on the status of the West Ridge Waste <br />Pile, along with a discussion as to the cause of the compaction <br />problem, location of area not meeting compaction requirements, and <br />how the pile is to be returned to its approved configuration. <br />Also, copies of nuclear gauge compaction reports since fall, 1989 <br />were requested. <br />The repair plan calls for removal of the material that failed the <br />compaction test. In order to expose this material the overlying <br />lifts, approximately 30 feet, will be removed and taken to the <br />crushing and screening level for processing through that facility. <br />Also, this excavation will extend approximately 60 feet back into <br />the bench. After the undercompacted material has been removed the <br />remainder of the bench, above this repair elevation, will be pushed <br />in and compacted in compliance with the approved plan. This repair <br />procedure will allow for an area that will be ready to accommodate <br />additional gob as it is generated in the mine. Attached, is a plan <br />view of the bench and a profile showing the work that has been done <br />and the final configuration of the bench. <br />The material removed from the pile which has been hauled and then <br />processed through the screening and crushing facility will be <br />incorporated into the coal stockpile and shipped to Orchard <br />Valley's customers. The ability to ship this material will depend <br />on quality requirements established in the various contracts. <br />Presently, approximately 6622 cubic yards of material has been <br />taken from the pile and stockpiled at the screening and crushing <br />facility. It is Orchard Valley's opinion that this is most <br />effective manner for addressing removal of this material, <br />