REV14500

• Permit No: C1996084
• IBM Index Class Name: Revision
• Doc Date: 9/12/2001
• Doc Name: TR-06-RESPONSE TO STIPULATION 6 LORENCITO CANYON MINE PN C-96-084
• From: GREYSTONE
• To: DMG
• Type & Sequence: TR6
• Media Type: D
• Archive: No

SEP 1 2 2001
Mr. Kent Gorham Division of Minerals and Geuluny
Senior Environmental Protection Specialist
Division of Minerals and Geology
215 Centennial Building
1313 Sherman Street
Denver. Colorado 80203-2273
RE: Technical Revision 06 -Response to Stipulation 6
Lorencito Canyon Mine (Permit C-96-084)
Deaz Mr. Gorham:
Lorencito Coal Company, LLC (LCC) hereby submits and requests approval of Technical Revision
06 for our response to Stipulation 6 of the mine permit for the Lorencito Canyon Mine. Attached is
the Technical Revision Form, proposed newspaper notice, and revised material of the Permit
Document for your approval. Revised materials include the following:
• Pond information on Figures EX 15-14, EX ] 5-9b, EX 15-11, EX 15-11 a, and
EX15-15 and Sedcad runs for Ponds 007x, 009, and 009a to be placed in Exhibit
l5. In addition, enclosed "fable EX 1 ~-14 should be placed in Exhibit 15.
• Stability analysis information for all ponds to be located on the
site(CTL/Thompson Reports - Apri127 and July 27, 2001)
• Jeff Canyon Haul Road plan and profile (Map 2.05.3-3b).
• Light use road locations for accessing sediment ponds.
• Reclamation bond calculations for reclaiming the three ponds and the haul road
In response to Stipulation 6, LCC has redesigned Sedimentation Ponds No. 001 and 007. Pond No.
001 has been replaced by ponds 001 a and 004a, and pond 007 has bee replaced by ponds 007a and
009a. These revised ponds have nominally 10-fr embankments and will not require State Engineer or
MSHA review. The attached analyses fro CTL/Thompson confirm that the proposed embankments
will be stable.
In addition, this Technical Revision includes modifications in the existing Jeff Canyon road to
accommodate coal haul traffic (new MAP 2.05.3-3b). This change will allow LCC to utilize the
• existing road rather than construct the new haul road originally proposed in the permit application.
5231 South Quebec Street • Greenwood Village. Colorado 801 I I
Phone [phone] • Fax (303) 72L9298
Web Site: www.greystone-consullants.com • F-mail: [e-mail]
• Environrnenrnl Cwrsulraus. /nc.
September 10, 2001 RECEl~,lr~'