GENERAL54265

• Permit No: C1981037
• IBM Index Class Name: General Documents
• Doc Date: 11/10/1993
• From: DMG
• To: THE CORLEY CO
• Permit Index Doc Type: GENERAL CORRESPONDENCE
• Media Type: D
• Archive: No

h
._ .
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman 51., Room 215
Denver, CO 80203
Phone: 13031 8hh-]567
FAX:[phone]
November 10, 1993
Dr. W.D. Corley, Jr.
The Corley Company
P.O. Box 1821
Colorado Springs, CO 80901
Dear Dr. Corley:
~II II~~I~~I~~~~~ ~I~
999
STATE OF COLORADO
OF.~~(O
ti~ s
New O
a (~~~PPyy~~~
• ~ r^T6 ~'
Roy ROmer
Governor
Michael B. long
Division Dneclor
On November 5, 1993 the Division has received The Corley Company's
October 29, 1993 response to the Division's November 2, 1993 reclamation plan
for GHC's Haet Pit area. Our responses to your comments are discussed below.
Apparently, there ie some confusion concerning the perspective view maps
provided by the Division. Most perspective views generally have the vertical
axis exaggerated as compared to the horizontal axis. As an~aide, I have
labeled the vertical to horizontal exaggeration. in these maps, all vertical
exaggeration was labeled 2V:1H. These are not the slopes of the hill as you
previously thought. Perhaps a more appropriate designation would have been
^V.H. 2x."
Construction practices, equipment selection, and cost estimation are our best
current estimates. The Division believes the current proposal best utilizes
monies available. The Division included proposed figures to you to demonstrate
that the approximate cost of the reclamation plan roughly equates to the
available money at bond. However, the cost of reclamation will be ultimately
decided by what bide are submitted in relation to the proposed project.
Concerning the vegetation practices, the recommended method of planting will be
drill seeding. The Division, however, does not constrain the bidders to the
method of planting or equipment used. The vegetation mix will be a
rangeland/wildlife habitat mixture consistent with the existing vegetation and
the seed mix stated in the GHC reclamation plan pending coat and availability
of the seeds. Fertilizing and mulching will be considered if any monies are
available.
Diversion ditches will be constructed at the toe of Chen's Hill to divert any
water and sediment from entering Hnergy Fuels permitted area. A second
diversion will be constructed at the toe of the "west aide" area and will empty
into Magpie Creek just south of the existing B foot culvert. All diversion
ditches will be sized for the 25-year/24-hour storm event.
The channel that will be reconstructed down the Hast Pit area is sized for the
100-year/24-hour event. Hrosion control, riprap or filter fabric protection,
will be specified accordingly. Since there will be no sediment pond
constructed, a series of small dozer basins will be utilized on the flatter
slopes to trap any sediment generated during runoffs.
The 62,000 yda of topsoil called for ie determined from an estimated 76 acres
of disturbance and a topsoil replacement depth of 6 inches, as stated. If the
existing topsoil piles do not contain enough material, the existing suitable
growth medium and topsoil located on the east side of the East Pit will be
utilized to make up the difference. Pending any additional money remaining,
Chen'sHill will be top soiled to a depth of 12 inches.
The Division has been in contact with Hnergy Fuels with regard to the
reconstruction of the access road across the Magpie Creek Diversion to the
Monarch Fan area. Mr. Dan Hernandez and Mr. Al Weaver discussed at length the
concerns of Hnergy Fuels.