GENERAL44245

• Permit No: C1981019
• IBM Index Class Name: General Documents
• Doc Date: 5/27/1999
• Doc Name: South Taylor Area Proposed Baseline Hydrologic Sampling Locations
• From: COLOWYO COAL CO LP
• To: DMG
• Permit Index Doc Type: GENERAL CORRESPONDENCE
• Media Type: D
• Archive: No

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999
Colowyo Coal Company, L.P.
5771 State Highway 13
/ Kennecott
Meeker, Colorado 81l"ril /
[phone] ~ . Ener9Y
[phone] FAX
Kimberley A. wolf Colowyo Coal Company L.P. ~ ~'~.
Environmental Engineer
May 25, 1999
RECEIVED
Mr. Byron Walker
Environmental Protection Specialist MAY 2 7 ~ggg
Colorado Division of Minerals and Geology Division olMinerals 8 Geo
1313 Sherman, Room 215 b9Y
Denver, CO 80203
RE: COLOWYO COAL COhH'ANY L.P. (COLOWYO), CDMG PERMIT C-81-019;
PROPOSED BASELINE HYDROLOGIC SAMPLING LOCATIONS FOR SOUTH
TAYLOR AREA
Dear Mr. Walker:
Colowyo will be initiating baseline water sampling for the proposed South Taylor Expansion Area and requests
the Division comment on the proposed sampling locations. We have previously sent the Division a pazameter
list, and we are supplementing it with the identification and mapping of sites, and a listing of the frequency of
analyses. The objective of the sampling program, and the intent of the Probable Hydrologic Consequence (PHC)
that will be written to support this permit revision, is to provide supplemental data in the area of disturbance [o
support the existing permit document, C-81-019.
Colowyo is proposing a continuation of truck and shovel surface mining operation to the south of the West Pit and
Section 16 Pit. Colowyo will exvact as many as four coal seams, known as the F, G, H, and I seams. The
proposed expansion area is roughly akidney-shaped area running from the west ridge line of [he West Fork of
Taylor Creek watershed east toward Goad Springs Creek. Drainage from the site will flow predominantly south
into the West Fork of Good Spring Creek. In the furore, one sediment pond may be necessary to the north in the
headwaters of the Wes[ Fork of Taylor Creek. Portions of Sections 16, 17, 18, 19, 20, 21, and 28 in T3N,
R94W and R93W are contained in the proposed pit area. The proposed South Taylor Expansion Area includes
sites currently or histo[ically monitored, and several new sites.
Surface Water Sites
Baseline surface water sites consist of perennial streams, springs, and stock ponds. Colowyo proposes to monitor
stream sites for field parameters at a monthly frequency, and to acquire full suite analyses quarterly. Springs will
be monitored monthly for field parameters between May and October, and annual full suite water quality analyses
will be acquired in June from the four largest flowing springs. Staff gages will be installed in the stock ponds,
and field parameters will be acquired monthly between May and October.