PERMFILE69490

• Permit No: M1989056
• IBM Index Class Name: Permit File
• Doc Date: 8/9/1989
• Doc Name: FN M-89-065 TIMNATH PIT ADEQUACY ITEMS
• From: MLRD
• To: GARY J TUTTLE
• Media Type: D
• Archive: No

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~6~~ STATE

OF COLORADO
Roy Romer, Governor
DEPARTMENT OF NATURAL RESOURCES
NE:D LAND RECLAMATION DIVISION
R 'R. I)ANTA, Dlrsctor
1
August 9, 1989
T0: Mr. Gary J. Tuttle
FROM: Michael J. Boyd, Reclamation Specialist
RE: File No. M-89-065; Timnath Pit, Adequacy Items
The following items must be addressed by the applicant in order to satisfy the
applicable requirements of C.R.S. 34-32-101 et seq. and the Mineral Rules and
Regulations of the Mined Land Reclamation Board-
Mining Plan (Exhibit D)
1) On page D-1, the application states that mining is expected to begin in
1986. Please submit a revised estimate of the commencement date,
2) Please provide additional details regarding your proposed dewatering
operations. What are the dimensions of the proposed dewatering trenches?
Wh•st pumping rate do you anticipate will be necessary to dewater the
site? Will pumping be continuous or intermittent?
Reclamation Plan (Exhibit E)
1) We entourage you to consider the possibility of creating two smaller ponds
rather than one large pond. This would provide enhanced wildlife benefits
as well as providing a more stable hydraulic/hydrologic configuration. /°[ c A s~~
,L"s~.,ss
Water Information (Exhibit G)
1) The mining plan calls for relocation of two drainage ditches. What are
the historic flows in these structures? Please provide additional
information related to the design of the re locat~ structures and
supporting computations.

2) Floodway and Flood Fringe areas are delineated on the map~g provided.
WF~at is the recurrence interval of the event which is the basis for
designation of these areas? What is the discharge which would correspond
W;~ ~v an event of this magnitude?
Wildlife Information (Exhibit H)
1) A Questionnaire from the Division of Wildlife addressing wildlife impacts
hers not been received, Please forward this document.
215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. [phone]