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Substitute Supply Plan for the _ I (; Evarist Aporaoata Oration the total amount of water in the dry yeaz of 1978 equaling 5,363.8 acre-feet. Table 3C shows that the average diversion rate for the ditch (1964 to 1994) was 9.8 cfs. The historic consumptive use of the McKay Ditch was estimated using historic irrigated acreage based on aerial photographs, interviews with past and present irrigators, the District 36 Water Commissioner, a field inspection, and analysis of diversion records for the ditch. Aerial photographs taken in 1974 and 1988 show that approximately 94 acres of pasture grass were historically irrigated with this right south of the ranch buildings along two alluvial terraces (see Drawing 2). According to the delineation by Mr. Mehan, none of this area is considered jurisdictional wetlands. Under this substitute supply plan, L.G. Everist plans to dry up 10.5 acres south of Vendett Creek (see Drawing 2). Using the dry-yeaz consumptive use established by the Penman-Monteith method, this results in a total of 17.0 acre-feet of available consumptive use. The historic consumptive use by month is summarized in Table 4C. The cumulative dry-year consumptive use associated with the dry-up of historic irrigated acreage under the South Rock Creek Ditch, Old Whetstone/Sheep Creek Ditch and McKay Ditch, as proposed in this substitute supply plan totals 138.5 acre-feet, as summarized in Table 5. Green Mountain Reservoir In 1993, L.G. Everist entered into a 40-yeaz contract for 25 acre-feet of water from Green Mountain Reservoir to replace out-of-priority depletions during periods when consumptive credits are not available from the dry up of historically irrigated lands. To ensure that adequate augmentation water was available, L.G. Everist amended its Green Mountain Reservoir contract in 1994 to increase the delivery from 25 acre-feet to 39 acre-feet per yeaz. The amendment of the Green Mountain Reservoir contract, according to the new operating policy, was awarded on a 25-year term with renewal provisions for an additional 25 years. A copy of this contract is included as Attachment 6. As previously stated, there is approximately 3.95 acre-feet of water available from this source after committing water to the Love Pit Augmentation Plan (96C W 176). 881-025.110 Wright Water Engineers, Inc. Page 9