Laserfiche WebLink
Kaldenbach, Tom <br />From: Kaldenbach, Tom <br />Sent: Tuesday, March 27, 2007 1:47 PM <br />To: 'Barbe, Henry' <br />C/98oo07 ~~ <br />ri~l.e -338 <br />Subject: RE: West Elk Mine (C-80-007), MR-338, Geotechnical holes on Deer Shaft Pad <br />Thank you Henry. Your response takes care of my questions. -Tom <br />From: Barbe, Henry [mailto:HBarbe@archcoal.com] <br />Sent: Tuesday, March 27, 2007 11:01 AM <br />To: Kaldenbach, Tom <br />Cc: Nolte, Doug; Nyikos, Chris; Peacock, Michael J. <br />Subject: RE: West Elk Mine (C-80-007), MR-338, Geotechnical holes on Deer Shaft Pad <br />Tom: To be conservative I think we will use the run-off information for the 2.0 Acre Pad fora 10-year, 24- <br />hourevent to add to the mudpit volume (calculated to be.217 ac-ft ). The safety demonstration for the Shaft Pad, <br />I assume, for this Minor Revision that the mudpit will be incised in native soils not in fill soils as depicted in the <br />Safety Demonstration of TR-101, however, if the mudpit were to be placed on the fill, the construction of the <br />mudpit would need to be at least 10 feet away from the edge of the fill slope as depicted in the Safety <br />Demonstration of TR-101. <br />The mudpit may potentially be located on the pad, but, in native subsoil (the area was stripped of topsoil <br />prior to the construction of the pad). We will need the area for potential operations and as such, we would dry <br />the pit out replace subsoil and gravel the area. If we can Feld-fit the mudpit off of the pad and near the topsoil <br />pile, we would dry it put fill it with subsoil, re-grade to AOC, then seed, fertilize, and mulch the area. The seed mix <br />would be comprised of the seed species composition mutually agreed in our permit (PR-10) to both CDRMS and <br />USFS approval. Mulch could be certified weed-free straw ; or straw/aspen excelsior blankets. <br />I hope this answers your questions, if not, please call me. <br />From: Kaldenbach, Tom [mailto:tom.kaldenbach@state.co.us] <br />Sent: Tuesday, March 27, 2007 10:27 AM <br />To: Barbe, Henry <br />Subject: West Elk Mine (C-80-007), MR-338, Geotechnical holes on Deer Shaft Pad <br />Henry, <br />The mudpit proposed in MR-338 will be an impoundment under the Rules. Are you relying on the safety <br />demonstration submitted in TR-101 for the mudpit ? <br />Is the reclamation plan for the mudipit, as follow: let the mudpit dry out, fill it with subsoil, regrade to AOC, then <br />seed the regraded area with a seed mix previously approved by DRMS. The mudpit area will be fertilized and <br />straw-mulched. <br />Tom <br />********** Email Disclaimer ********** <br />The information contained in this a-mail, and in any <br />3/27/2007 <br />