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Draft Scope of Work <br />each site will be �nvestigated using the �I3AB�11V[ cross-sectional data, including substrate <br />pebble counts, and appr°opria�e sedim�nt rtic�billzatzon ar�d tra�ispc�rt madels. The results will <br />b� documented fullowing the forrnat utalize� i�� I'hase '?. <br />3.2.2 Survey transects at F�.eeder Creek, Troublesome �r�ek and low�r �lu� �iver. Flushing flows <br />and substrate infarmaiion �vill be invesiigated. <br />3.2.3 Conduct trout spa�vning surveys (i.e. redd surveys) during the fall to identify itnportant <br />spawning bars for both rainbow and brown trcaut. <br />3.2.4 Work r�vith the Caunty to develop water and air te�a-iperature nxanitoring and flow monitoring <br />recorramendations for summer ►nanitoring. <br />3.2. S Work with the Coianty to develop rec�ommendations for new permanent U�GS gage sites. <br />3.2.6 �ollect available fish counts and bic>mass data and add to reach by reactt summaries, <br />3.2. 7 Assemble data. <br />3. 3 Assessment of Field Data <br />3.3.1 Prepare tables, figures, photos of 2008 field data and stream assessments. <br />3.3.2 Verify spawning habitat suitability curves from previous analysis with 2008 redd data and <br />field surveys. <br />3.3.3 Compile PHABSIM analysis results for 4 new cross sections. Run analyses for single study <br />sites (Blue, Reeder and Troublesome) including flushing flows. <br />3.3.4 Review flushing flow recommendations from Phase 2 and compare to this year's field <br />assessment (riffle stability index analysis and redd particle size data). <br />3.3.5 Review and finalize all flow-habitat relationships at all study sites. <br />3.3.6 Compile 2008 data and incorporate into the Stream Management Plan <br />3.4 Assessment of Flow Regimes. For the purpose of this proposal the following analysis pertains to <br />the 14 reaches with PHABSIM study sites developed in Phases 2 and 3a. These reaches are <br />referred to below as`study reaches'. This evaluation is to assess what approach (flow versus <br />restoration) has the greatest potential to influence the situation that is protective of the future <br />stream conditions and flow needs. <br />3.4.1 Future Conditions Flow Regimes: Tetra Tech shall conduct a time series analysis for future flow <br />conditions with and without the proposed mitigation measures as outlined below. The <br />hydrographs for dry, normal and wet years shall be supplied by Denver Water and Northern <br />O Grand County, Colorado TETRA TECH <br />Stream Management Plan, Plwse 3B 3 <br />TETRATECH <br />