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Well Augmentation Subdistrict - Loan Feasibility Study Page 13 from the CWCB loan we have included within the projection tool the following additional water supplies on the South Platte River upstream of the headgate of the Platteville Ditch: • 100 - 200 acre -feet of fully consumable water • 100 - 300 acre -feet of storage space • Storage and release infratructure for new storage We have also represented in the projection on -going leases of approximatley 0.5 cfs at or above the Platteville Ditch headgate. These leases are necessary in order to replace post - pumping depletions in Reach F, and water in excess of this amount (aquired through the CWCB loan funds) can then be used directly to increase pumping quotas. The relative impact of the additional supplies acquired from the loan funds is indicated in the WAS projection by the additional well pumping that can occur. We have provided first -year results from two example projection scenarios as Attachment B. These scenarios simply compare WAS quota (additional well pumping) that can occur under the WAS decree with and without these additional supplies. A summary of projection results under these scenarios is shown in Table 3. Table 3 Summary of Projection Scenarios Based on the projection results we expect WAS could authorize approximately 4,900 acre -feet of well pumping during the first year of operations after acquiring the additional supplies through the CWCB loan (approximately 30 percent of the total contracted amount for WAS). This result demonstrates the high degree of "leverage' associated with additional water supplies. The leverage results from 1) the delayed affect of well pumping on the South Platte River (only approximately 40 percent of the annual pumping affects the river in the year that pumping occurs), and 2) the fact that there has been no well pumping for seven years (and therefore depletions from prior years are relatively small). Over the longer term we would expect the additional supplies sought through this CWCB Loan, when combined with the supplies WAS already owns, will result in a "sustainable" WAS quota on the order of of approximately 1,700 acre -feet (a quota of approximately 8 percent). It should be noted however, that over the next 25 years WAS will continue to develop water supplies in addition to the scope of this CWCB loan request. As additional storage and recharge projects are completed that can take advanage of favorable hydrologic conditions WAS will slowly but steadily build its water supply portfolio and have the ability to authorize a 100 percent quota. LeonardRice ENGINEERS.INC Plan Reach year -1 year -1 Quota Pumping a F 0 0 Without CWCB Funding C, B, D, E, A 4,059 29% F 890 31% With CWCB Funding C, B, D, E, A 4,761 36% Based on the projection results we expect WAS could authorize approximately 4,900 acre -feet of well pumping during the first year of operations after acquiring the additional supplies through the CWCB loan (approximately 30 percent of the total contracted amount for WAS). This result demonstrates the high degree of "leverage' associated with additional water supplies. The leverage results from 1) the delayed affect of well pumping on the South Platte River (only approximately 40 percent of the annual pumping affects the river in the year that pumping occurs), and 2) the fact that there has been no well pumping for seven years (and therefore depletions from prior years are relatively small). Over the longer term we would expect the additional supplies sought through this CWCB Loan, when combined with the supplies WAS already owns, will result in a "sustainable" WAS quota on the order of of approximately 1,700 acre -feet (a quota of approximately 8 percent). It should be noted however, that over the next 25 years WAS will continue to develop water supplies in addition to the scope of this CWCB loan request. As additional storage and recharge projects are completed that can take advanage of favorable hydrologic conditions WAS will slowly but steadily build its water supply portfolio and have the ability to authorize a 100 percent quota. LeonardRice ENGINEERS.INC