REP43512

• Permit No: C1980005
• IBM Index Class Name: Report
• Doc Date: 7/28/1986
• Doc Name: SENECA II 1985 ANNUAL HYDROLOGIC REPORT FN C-80-005
• From: MLRD
• To: PEABODY COAL CO
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

Richartl D. Lamm
Governor
iii iiiiiiiiiiiii iii
DEPARTMENT OF NATURAL RESOURCES
Davitl H. Getchas, Eaecutiva Director
MINED LAND RECLAMATION
DAVIDC. SNEtTON, Director
July 28, 1986
Mr. Jim Lunan
Peabody Coal Company
1300 South Yale
Flagstaff, Arizona 86001
•
DIVISIO N
Re: Seneca II 1985 Annual Hydrologic Report (File C-80-005)
Dear Mr. Lunan:
The Division has recently concluded its review of the Peabody Coal Company
responses to the Division's April 24, 1986 review of the 1985 Seneca II Annual
Hydrologic Report. The Division has identified several concerns which are
addressed in this correspondence. To facilitate review, the items below are
presented in the same format as the June 25, 1986 submittal.
1. (A) Peabody states that groundwater may flow from one side of the
anticlinal axis to the other at the Seneca II mine site. Peabody
should clarify this statement, and expand upon this theory given the
following two conditions: (1) the flow lines on Exhibit 7-2, which are
derived from the potentiometric surfaces similarly mapped on Exhibit
7-2, indicate that the general direction of flow varies from
sub-parallel to almost normal to the axis of the Tow Creek Anticline;
(2) areas adjacent to the anticline (north and west of the axis in the
central portion of the mine area) are identified as, and presumably
remain, unsaturated (see Exhibit 7-2).
(B) The Division is concerned with the loss of head in well GW-545-P1
and requests that Peabody more thoroughly address the loss of head due
to recharge area disturbance in the Wolf Creek mining area.
Specifically, Peabody should address the loss of head in GW-S45-P1, a
Wolf Creek Coal completion, given the relative stability of the water
level in GW-545, a Wolf Creek Overburden/Wadge Underburden completion.
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]