PERMFILE128924

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 6/2/2006
• Section_Exhibit Name: Exhibit 52 Water Augmentation Plan
• Media Type: D
• Archive: No

I.~
and case a well or similar device from the surface to a
.~ sump below and pump out the diverted water;
' (c) if a water loss injures a vested senior water
(s right, as defined in this plan for augmentation, and
Applicant does not promptly cure that water loss through its
'`_ protection plan, as such protection plan exists now or as it
may subsequently be modified, Applicant will make water
~'= available under this plan for augmentation.
9. The purpose of this plan for augmentation is to
assure that any out-of-priority stream depletions that may
occur in the above-described tributaries of Minnesota Creek
as a consequence of subsidence from Applicants retreat
mining operations beneath these tributaries, and that are not
cured by action under the protection plan, may be replaced in
order that vested senior water rights on Minnesota Creek are
not injured. This plan for augmentation provides a method-
ology for detecting the occurrence of any such stream
depletion and quantifying such loss, if any, and provides
augmentation-water to prevent any injury to affected senior
water rights.
10. The existence and extent of any stream depletion
will. be determined on the basis of a comparison between the
expected stream flow in the affected basin(s) and the actual
stream flow therein. If the latter amount is lower, the
difference will, subject to the limitations herein, quantify
Applicant's out-of-priority depletion and its obligation to
augment.
11. The expected stream flow figures will be arrived
at by applying fixed "contribution factors," listed in
Exhibit B, attached hereto and incorporated herein by
this reference, to a set of measurements to be made at the
time a determination is called for, in accordance with the
equations set forth in Exhibit C, attached hereto and
incorporated herein by this reference.
12. Three stream flow gauges referred to herein are
identified as follows:
a. Minnesota Creek Gauge, which Applicant and the
United States Geological Survey jointly installed and
maintain: located on the Minnesota Creek mainstem
- approximately six miles upstream of Minnesota Creek's mouth
`~:-.... and just downstream of the confluence of Dry Fork with
_ _ Minnesota Creek, at the location of a former IInited States
Geological Survey gauging station;
°- ~ b. Dry Fork Gauge, which Applicant installed and
maintains: located on the Dry Fork of Minnesota
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