REV14599

• Permit No: C1981039
• IBM Index Class Name: Revision
• Doc Date: 8/30/1989
• Doc Name: PROPOSED STIPULATION 5 GRASSY GAP MINE MIDTERM C-81-039
• From: MLRD
• To: KORB AND CARROLL
• Type & Sequence: MT1
• Media Type: D
• Archive: No

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STATE OF COLORADO
Roy Romer, Govei
DEPARTMENT OF NATURAL RESOURCES
MINED LAND RECLAMATION DIVISION
FRED R. BANTA, Dlrsctor
August 30, 1989
Mr. Robert Sherman
Mr. Marx Koro
Koro and Carroll
lU6 Oak Street
Fort Collins, CO 805'24
Re: Proposed Stipulation 5, Grassy Gap Mine, Mid-Term, C-81-039
Dear Strs:
ThanK you for coming in to the office on August 24, 1989, to discuss proposed
Sttpulatton 7 concerning bonding. At that time you indicated that you were
not planning to progress on Stipulations 5 and i. until you had resolves the
pond issue. I understood you t0 sav that .you and your client did not yet have
a clear understanding of wnat was requires to satisfy Sttpulatton 5. I would
therefore like to take this opportunity to review the appropriate regulations,
our ooservations about the site ano an outline for your suomittal in response
to Stipulation 5.
Approximate original contour (AOC) is tlefined in Rule 1.04(}3) as a
post-mintng topography which resemples the Dre-mining topography, a landform
wnicn blenas in with the surrounding landscape and a physical conftquration
which results to the elimination of highwalls and spoil piles. Rockcastle
Coal Company proposed and the Division approves a post-mintng topography at
Grassy Gap on the Reclamation Map found in Volume 2 of the permit application
to meet Rule 2.U5.4(2)Ic). Rockcastle must demonstrate through the use of
certified as-built surveys that the proposed post-mining topography was
acm eved, and demonstrate to rougn reference to the tlefinitton and the
appropriate performance standards that AOC was achieved. The performance
stanaards are the Division's measures of compliance. Those associates with
approximate original contour are found in Rules 4.14 and 4.27. Rule 4.14
SpeaKS to the timing, metnod and general grading requirements of backfillinq
and grading. Rule 4.27 discusses environmental design standards associated
witn steep slope mintng and reclamation.
The D1V1stOn 15 concerned spout the lmplomentdtl0n Of the prODOSetl to p0grdpny
and spout the associated long-term erosional staotltty at Pits 5 and 6.
Certified surveys of the two reclaimed pits may relieve the Division's
concerns spout lanaform estaoltshment. A demonstration of AOC as outlined
pelow is also required as part of the certification process and as a
Consequence ofi the difference in confiiguratton between the proposes reclaimed
topography and the constructetl to DOgraphy. In addition, Rockcastle must
discuss the long-term stability of the site.
215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. [phone]