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V. A. Sperling, Esq. <br />June 6, 2006 <br />Page 3 <br />The environmental commitments and other factors impacting Durango Pumping <br />Plant operations are summarized in our report. The Bureau of Reclamation will <br />eventually develop standard operating procedures that will account for these factors. <br />For our analysis, we assumed that pumping will be limited to satisfy the minimum bypass <br />requirements. Additionally, pumping in June was reduced in our analysis to a maximum <br />rate of 240 cfs as required in the Final EIS. <br />ALP diversions are further constrained by Durango Pumping Plant capacity and <br />project demands. The Durango Pumping Plant will have a capacity of approximately <br />280 cfs. As reported in the Final EIS, ALP users will divert approximately 112,000 acre - <br />feet per year. In our analysis, we limited the eligible ALP pumping amounts (based on <br />available streamflow, bypass flows, and pumping capacity) to a maximum of 112,000 <br />acre -feet in each year. <br />Results — The enclosed table summarizes, for each month of the study period, <br />the streamflow claimed by the Boating Park that is available for diversion and bypass <br />flows by the ALP. As shown in this table, approximately 103,000 acre -feet per year <br />commanded by the RICD can be diverted at the Durango Pumping Plant or used to <br />satisfy ALP bypass requirements. This is equivalent to approximately 65 percent of the <br />total streamflow claimed at the Boating Park (159,000 acre -feet per year). <br />