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• Application of Bowie Resources, Limi[ed Case No. 99 CW 263 Ruling of Referee and Decree Page 6 iv. Amount: 568.8 acre feet absolute and 277.2 acre feet conditional. Subsequently, the conditional portion and 185.8 acre feet of the absolute portion were abandoned, leaving a total of 383 acre feet absolute. v. Appropriation Date: September 1, 1934. vi. Decreed use: Irrigation. 22. Statement of Plan for Augmentation: A. General. Applicant owns and operates the Bowie Mine No. 2, the portal of which is located in Section 10, T. 13 S., R. 91 W., 6th P.M., Delta County, Colorado. The mine is located in the North Fork of the Gunnison River Basin. The location of the mine is shown on Figure 1 attached hereto. The mine is an underground coal mine, with related processing and shipping facilities. The water rights and augmentation plan described in this Application will all be used in connection with the operation of the Bowie No. 2 Mine. B. Augmentation of Pond Evaporation Losses. The Bowie Sedimentation Ponds • described in the First Claim for Relief, above, have been constructed on property owned by Applicant, below the Bowie Mine No. 2, to intercept area surface runoff and detain such runoff to allow any suspended pollutants to settle out prior to the release or other discharge of the water from the Ponds. Each of the Bowie Sedimentation Ponds will have an emergency spillway and an outlet pipe. The nonna] water surface elevation will be maintained at or below the level of the outlet pipe. Immediately following storm events the water level may be higher, but only for a short level oftime. Water from the outlet pipes of each of the Ponds will be discharged into the Deer Trail Ditch, and then transported through this ditch to the North Fork of the Gunnison River. The only consumptive uses from the Ponds will be evaporation losses. The evaporation losses from the Ponds will be augmented and replaced as follows: i. Evaporation from the Bowie Sedimentation Ponds could occur during periods of call by senior water rights downstream of the Ponds on the North Fork of the Gunnison River. Under strict administration the call period could include all months except the peak runoff season. However, under the plan proposed by Applicant, augmentation and replacement water will be provided for all evaporation losses, even those occurring in the peak runoff season. ii. The total annual evaporation from the three Bowie Sedimentation Ponds will be 1.88 acre feet (AF). This is based on a normal pond surface area for the three ponds of 0.718 acres and a net pond evaporation rate of 31.38 inches per year. Pond evaporation was calculated • using the State Engineer's method for gravel pit ponds, monthly precipitation data from the Paonia Weather Station, and a mean annual evaporation rate of 42 inches based on NOAA data. The monthly distribution of this evaporation is shown on Table 5, attached hereto.