GENERAL56067

• Permit No: C1981026
• IBM Index Class Name: General Documents
• Doc Date: 8/21/1991
• Doc Name: Amended Proposed Decision & Findings of Compliance for RN1
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

constituents annually (in September) at Wells 1, lA, 1B, 1C and 7. An
additional well will be completed in the southern part of the Pit l backfi]led
area. Surface water monitoring is limited to NPDES requirements. In order to
update the permit to reflect the current monitoring and reporting conducted at
the mine, the following stipulation is necessary.
STIPULATION N0. 1
WYOMING FUEL COMPANY WILL MONITOR WATER LEVELS ANNUALLY DURING SEP7EMBER A7
WELLS IN THE PIT N0. 1 AREA FOR THE FOLLOWING CONSTITUENTS:
pH Calcium
Conductivity Magnesium
TSS Sodium
TDS Potassium
Hardness SAR
Bicarbonate Sulfate
Hydroxide
Chloride
Fluoride
Nitrate
Phosphate
Ammonia
Aluminum
Boron
Iron
Lead
Molybdenum
Zinc
C
AN ANNUAL HYDROLOGY REPORT (AHR), WHICH INCLUDES A DISCUSSION OF THE RESULTS
OF THIS MONITORING TO PREVIOUS CONDITIONS, WILL BE SUBMITTED TO THE DIVISION
FOR REVIEW BY OCTOBER 31 OF EACH YEAR.
With the acceptance of the above stipulation, the operation is in compliance
with the requirements of this section.
VII.
es 2.04.7(3). 2.05.6(3)fa)(11
Within Bolton Draw lies an adjudicated surface water right. This right, known
as the Bolton Ditch, owned by the Noffsinger Ranch, is located in NW 1/4 of
the NE 1/2 of Section 11, TBN, R78W. Filed under Case No. W-846, this ditch
right bears an appropriation of 15 cfs. However, records show the average
diversion to be 2-5 cfs. Surface water storage at the mine site detains
approximately 3~ of the surface water of the Bolton Draw watershed. Assuming
that all this water would be lost to the surface water system, it is highly
unlikely that any measurable diminution of flow will occur in Bolton Ditch. A
monitoring system, designed to identify any contamination of waters serving
Bolton Ditch, will be maintained throughout the life of the permit.
At present, one registered well lies in the vicinity of the Canadian Strip
Mine. This well, belonging to Kerr Coal Company, is located in the SE 1/4 of
Section 35, T9N, R78W. Filed under Permit No. 0X53-F, this well produces
water from the lower Coalmont Formation. For two reasons, any impact on
quantity or quality of the water from this well, due to operations at the
Canadian Strip Mine, is unlikely. First, the well lies adjacent to the pit
operations of the Kerr Strip Mine, which is a disturbance several times
greater in size than that at the Canadian Strip Mine, and any effect would be
more likely to be caused by Kerr Coal Company operations. Second, due to very
low transmissivities and low hydraulic communication between strata, it is
unlikely that any significant recharge occurs within the Canadian Strip Mine
affected areas.
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