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344CJ (d) Specify The Excess Capacity Of Each Treatment System And Distribution Or Collection Network In The Community Or Development Area And Source Development Area; The average annual yield for Homestake Phase I is 28;000 acre feet. The Missouri Tunnel and Homestake Tunnel have been constructed to accommodate both the Phase I yield and the expected Phase II yield. Additionally, Homestake Reservoir and East Slope storage and delivery facilities have been constructed to accommodate the entire yield under ultimate development. Total excess supply over demand in the other water collection systems is reflected for ea~l community in Attachments 2 & 3. Obviously, the excess supply is projected to diminish annually until approximately 1994 When water supplied from this project must be available. Capacity of treatment and distribution systems within the Cities should not be deemed relevant since they are not within the borders of Eagle County and are not related to the need for additional water supply. In any case, the Cities will maintain adequate treatment and distribution capac1 ty in order to properly utilize the water produced by Phase II. (e) Provide An Inventory Of Total Commitments Already Made For Current Water Services; Total commitments made for the sale' of water, although not within Eagle County are provided herein. As of July 1982, Colorado Springs had 57,404 residential customers, 6,933 commercial customers, 3 contract customers and 82 other, including inter-departmental and irrigation customers. The City of Aurora had 37,845 residential customers 3,319 commercial customers and one contract customer. Aurora is committed to provide 2,500 af to Pueblo and ultimately 3,100 af to the Roxborough District. (f) Detail The Operational Efficiency Of Each Existing System In The Development Area And Source Development Area; Concerning the efficiencies of overall water supply systems, Aurora estimates 10% of total aggregate supply is lost through reservoir evapora- tion, transportation and system operation losses. Colorado Springs estimates 10% of its raw supply is lost through evaporation, reservoir losses, and transportation losses. Less than 5% is lost in the distri- bution system, including annual operation and flushing of fire hydrants. Both Cities continue active inspection and maintenance programs and have low seepage losses in the distribution systems. (g) Detail The Source, Rights, And Quality Of Existing Water Supply Which Shall Include A Detailed Statement Of The Proposed Project's Impact On The Total Dissolved Solids and Hardness of the Eagle River Measured At Dowd Junction And Dotsero And Of The Colorado River And The Roaring Fork River Measured At the Garfield/Eagle County Line Respectively. 8