ENFORCE24478

• Permit No: C1984062
• IBM Index Class Name: Enforcement
• Doc Date: 11/24/1986
• Doc Name: ENERGY MINE 3 PROPOSED DECISION C-84-062 TR REVISE SEDIMENT CONTROL PLAN
• From: MLRD
• To: COLORADO YAMPA COAL CO
• Violation No.: TD1990020244004TV2
• Media Type: D
• Archive: No

Richartl D. Lamm
Governor
DEPARTMENT OF NATURAL RESOURCES
Davie H. Gerchea Executive Director
MINED LAND RECLAMATION DI\
DAVID C. SHELTO N, Director
DATE: March 21, 1985
T0: Dan Mathews
FROM: Anne Baldrige <<~''~"'~
RE: Energy Mine No. 3, C-84-062, Stipulation Responses - Stipulation Nos.
7, 8, 9, 10, 11, 1,3, 14,15,
I have finally completed my review of the above noted stipulations. Following
are my comments.
Stipulation No. 7 - The design presented for the Middle Creek Detention Basin
is incorrect. CYCC incorrectly used a CN of 70 which is too low, however, the
pond is so oversized that the Division should allow CYCC to go ahead with
construction but resubmit the correct design calculations. Note: The reason
the Pond is so oversized is because CYCC plans on leaving it as a permanent
livestock watering pond. Using SCS "Ponds" criteria the pond was designed for
the 25 year 24 hour storm (see Stipulation No. 11).
Stipulation No. 8 - The operator proposes pumping as a means of dewatering the
two ponds. Given that the ponds are incised this is the most practical
solution. There is one problem with this method. Both ponds are expected to
receive water from the water table since the ponds lie, in part, below the
water table. This has already been evidenced at the Mine No. 3 Detention
Basin. I suggest that the Division require CYCC to place gages in both ponds
to clearly indicate the level each pond must be pumped to in order to contain
the runoff and sediment generated by a 10 year 24 hour storm. There are also
some problems wtt'~~r rights if water is allowed to remain in the ponds,
see Stipulation No. 10.
Stipulation No. 9 - Has been satisfied.
Stipulation No. 10 - No information on this stipulation was found. This is in
violation of the Division's 60 day requirement in the findings document if
indeed nothing has been submitted.
Stipulation No. 11 - No reclamation plan has been submitted for the basins.
All the Division's concerns for these ponds as permanent structures as
outlined in the findings document have not been addressed. In addition,
before the Division can approve these as permanent ponds, Stipulation No. 10
must be fulfilled. This stipulation (11) has not been fulfilled because CYCC
maintains these ponds are suitable as permanent ponds for livestock watering.
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]