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determination that, to protect the natural environment to a reasonable degree, it would suffice to appropriate minimum stream flows that would maintain the existing aquatic habitat and related fish production when the determination is not shown to be irrational or unfounded. Id. at 577. In determining the minimum amount of water necessary to preserve the natural environment to a reasonable degree in this case, the CWCB will rely upon recommendations from Staff, the CDOW and the BLM. The CWCB staff, CDOW, and the BLM have cooperated in developing instream flow recommendations based on PHABSIM analysis, as well as standard field and office procedures including, but not limited to, collecting hydraulic and biologic data, surveying stream channel geometry, modeling instream hydraulic parameters, and analyzing water availability using gage flows and statistical stream flow modeling. The determination of the minimum amount of water necessary to preserve the natural environment is properly based on the scientific expertise of Staff, Wildlife, and the BLM, and will be supported by the evidence at the hearing in this matter. 7) Staff reserves the right to supplement its legal claims in its Rebuttal Statement. C. EXHIBITS TO BE INTRODUCED AT HEARING 1) January 14, 2011 Memorandum from Jeff Baessler to the CWCB, Agenda Item 15, containing the stream flow tabulation for the San Miguel River ISF and Staff's request that the Board form its intent to appropriate, attached as Exhibit 1. 2) Letter from the CDOW, dated December 10, 2010 and letter from BLM dated December 15, 2010, along with supporting field data, photographs, maps, gage data and water availability analysis, attached as Exhibit 2. Appendix A 3 Species Conservation Agreement Appendix B CNHP Site Report SMR at Tabeguache Creek Appendix B CNHP Site Report Uravan West Appendix C Fish Survey SMR at Uravan 2008 Appendix D Macroinvertebrate report Appendix E PHABSIM 15000 Appendix F Anderson F289RG (Riverine Fish Flow Investigations) Appendix G R2X Appendix H LOG Regression RHABSIM Staging Tables Appendix H R2X Staging Tables Appendix I Final Report Cooper & Conovitz 2000 Appendix J SMR ISF Hydrograph Appendix K CDOW/BLM San Miguel Draft Exec summary Appendix L Dolores River Fish Survey 3) The CWCB Staff recommendation and executive summary containing the written recommendation for an instream flow appropriation on the San Miguel River, attached as Exhibit 3. All or portions of the digital Microsoft Excel worksheets that were developed as part of staff hydrologic analyses may also be used as exhibits. These digital Excel files can be requested directly from CWCB staff.