PERMFILE58702

• Permit No: M1997054
• IBM Index Class Name: Permit File
• Section_Exhibit Name: EXHIBIT G WATER INFORMATION
• Media Type: D
• Archive: No

Echibil G CMLRB 112 Permit Application
Agile Stone Systems, Inc.
• Surface water diversions and consumptive uses, by yeaz and quarter, are given in
Columns (2) and (2a) of Table 3. These values are based upon the average annual values
given in Table 1 for each of these water budget components.
Rechazge to the alluvial aquifer (Column (3))is computed from the difference between
water diverted and water consumed values of the preceding columns. If Twin Lakes
water is diverted to provide additional recharge, as indicated by a value in Column (7a),
that value is also added into Column (3).
Retum flows to the Arkansas River (Column (4)) are then computed using the v/Qt
values of Table 2, assuming that the recharge rate is constant through a quarter and
applying the principal of superposition.
Column (5) of Table 3 then gives the quarterly depletive effect of mine operations on the
River, computed as the difference between diversions (Col.(2)) and return flows
(Col.(4)). This depletive effect is then exactly balanced with Twin Lakes replacement
water (shown in Col. (1)) to provide a zero net accretion or depletion on the River (see
Col.(6)).
An accounting of Twin Lakes share water is given in Columns (7) through (10). This
accounting assumes that on November 1 of the first year, 1.417 million gallons (the
estimated net amount after subtracting river transit loss; see Table 1 and Col (10)) is
• placed into Agile's account. Thereafter, this amount is increased to 1.79 million gallons
since Agile does not consume the full 1.417 million gallons in the first year and unused
water is allowed to carry forward each year as a credit to the water share owner so long as
the carry forward and new year water allotment does not exceed the storage capacity of
the water reservoir. This maximum amount for Agile's 5 water shares at Parkdale equals
about 1.79 million gallons. Beginning balances are given in Col. (7), and are computed
from the Ending balance of the previous period (Col. (8)), plus Twin Lake credit
(Col.(10)) for that period.
Any beginning amounts in excess of the allowable storage volume in Twin Lakes (1.1
acre-feet per share x 5 shares = 1.79 million gallons) is shown as "Excess" water in
Column (9), and the beginning amount (col.(7)) is reduced to 1.79 million gallons. This
occurs in Quarters 3, 7, 11 and 15. Ending balances are given in Col. (8), and are
computed from Col. (7) minus Col. (5) [Begin -Depletions, or Begin -Replacement].
(The physical storage limit of 1.1 acre feeUshaze was confirmed 12/11/97, Personal
Communications with Alan of The Twin Lakes Reservoir and Canal Company and Steve
Kastner, Water Division 2, Office of the State Engineer.)
The "Excess" water not used by the applicant flows down the Arkansas River, to the
benefit of other water users. During the five year simulation period, the water balance
computations show that the Arkansas River benefits from the planned operation of the
Project, with the annual benefits varying from about 512,000 gallons in Year 1 (Quarter
• 2) to about 10,000 gallons in Year 4 (Quarter 15).
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