PERMFILE69535

• Permit No: C1981071
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: PR2 ADEQUACY RESPONSE
• Media Type: D
• Archive: No

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Doc Date:12/11I2001
''"1'~, . galley Coal Coroorauon 129588 Roun County Road #27. Oak Creek, CO 80x67 • [phone]
April 14, 1987
Mr. Dan Mathews
Reclamation Specialist
Colorado Mined Land Reclamation Division
1313 Sherman Street, Room 423
Denver, CO 80203-2273
Dear Mr. Mathews:
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APR 15 1987
MINED Lt-rvu
[IECLAMATION DIVISION
RE: Eckman Park Postmininq To
raohv and Channel Stabilization
The attached is in response to the comments received in your letter of
March 5, 1987 on the above referenced permit revision. Also, a part of the
-+~ response addresses the comments provided in your letter of December 12, 1986
on the geomorphic and engineering analysis report CYCC submitted in response
to NOV C-81-061. CYCC would have responded earlier to the December 12, 1986
letter but it was agreed mutually that CYCC could delay the response until
the adequacy response for the permit revision was submitted.
Since the permit revision was submitted, CYCC has received updated maps
for the Eckman Park area, and subsequently this mapping is used in the
adequacy response. The mapping was done after it was learned that the
original mapping contained serious discrepancies (i.e. map elevation exceeds
survey elevation for certain areas). The new mapping accurately represents
the existing topography.
As you will-note during your review of the adequacy response, CYCC is
proposing to regrade the lower section of the drainage in Area 41. The
maximum gradient will be approximately 23.8%, with an overall gradient less
than 18%. This work will require excavating 70,000 CY of material from the
lower segment of the drainage and hauling it to Area 51 for disposal.
Topsoil will be bladed to the side of the work area and haul route and then
redistributed over the channel side slopes and haul route upon completion of
the project.
In reference to channel 51E, CYCC is proposing to reroute drainage
above the active pit to the west away from this channel. This will provide
for further stabilization of this drainage. Also, a stock pond is proposed
for the upper section of this drainage which should also aid in stabilizing
the channel.
CYCC is proposing to construct a number of stock ponds in the upper
portions of the various drainages located in Eckman Park. This will be done
per the approved permit. The ponds wi71 compliment the pdstmining land use
and provide additional drainage stability.