REV99269 - Laserfiche WebLink

Home Browse Search

III IIIIIIIIIIIIIIII 999 Mountain Coal Company West Elk Mine Post Office Box 597 Somerset, Colorado 81434 Telephone 303 929-5015 Fax 303 929-5595 September 9, 1993 Ms. Christine E. Johnston Colorado Division of Minerals and Geology Office of Mined Land Reclamation 1313 Sherman Street, Room 215 Denver, CO 80203 Re: West Elk Mine, Permit C-80-007, Minor Revision No. 101, Soils Testing for Mine Water Improvements Dear Christine: /\ Mountain Coal Company (MCC) requests a minor revision to Permit C-80-007 to collect soil samples, by boring or trenching, to be utilized in the design of the foundation for a future raw water storage tank. The enclosed drawing shows the area of the tank site, where soil testing will be conducted. The site is located in the SEl/4 of Section 16, Township 13 South, Range 90 West of the 6th P.M., at approximately 7,365 feet (above mean sea level) at a former drill site. MCC (i.e. ARCO) is the surface landowner. A Threatened and Endangered Plant survey for the Grand Mesa Penstemon was completed last month by Greystone Consultants and no plants were identified in this area. It is anticipated that that either a small backhoe or geotechnical drill rig will be contracted to complete the soil testing. Approximately four trenches, 18 inches wide, 20 feet long, and up to the limits of the backhoe in depth (approx. 18.5 feet) will be required if a backhoe is used. If a geotechnical drill rig is used then approximately four holes will be drilled to a point of refusal plus eight feet. Drainage control will be maintained by the use of either sediment traps or a small silt fence around the trench or drill site.The trenches and holes will be immediately backfilled after soil samples are obtained. The trench or drill site would then be seeded and mulched. This planned activity is scheduled to be completed in one day. Access to the site will be conducted using existing roads and no additional surface disturbance is proposed in this minor revision.