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<br /> ' Dragonfly Bend Habitat Enhancement Project. Scope of Work Page 2 <br /> Pacific Water Resources, Inc. <br /> PWR. PWR's role will be to provide advice and consulting services in the fields of <br /> engineering and geomorphology. <br /> The activities outlined below extend the initial fluvial geomorphic services performed <br /> previously. Those services were described in our original scope of work dated October <br /> 24, 2003. The project approach and understanding set forth in that document remain <br /> operational for this work. <br /> Task -Design Support Services for Dragonfly Bend Habitat Enhancement Project <br /> Objective: To provide advice and limited technical support related to sediment transport <br /> and channel enhancement design and construction. Services will be in the form of design <br /> reviews documented by memos of the City's Dragonfly BHEP. <br /> Activities: <br /> 1. Review the City's plan and technical specifications. PWR will review <br /> construction documents and supporting materials produced by the City at <br /> approximately 60% completion..The purpose of this review will be to evaluate <br /> design methods, details and plans for applicability, function (or performance) and <br /> constructability. At this time PWR is not awaze of the number of plan sheets, <br /> details, notes, and specifications which the City desires for review. For this <br /> reason, PWR will perform a cursory review initially and work with the city on a <br /> prioritization scheme. <br /> 2. Review the City's existing hydraulic model Using the existing simplified XP- - <br /> SWMM model and/or other simplified methods, modify the model in the <br /> Dragonfly reach to reflect proposed conditions. Utilize the model to estimate <br /> flow velocity in the channel for the 100-year storm event. This flow velocity will <br /> be utilized to review designs for: channel geometry, proposed structures and bank <br /> stabilization. PWR will report any concerns regarding structure hydraulic <br /> performance and stability for the 100-year storm event. Where appropriate, PWR <br /> will provide referenced design literature to support identified concerns. <br /> 3. Assess and evaluate sediment transport issues. Using flow velocities from the <br /> model PWR will evaluate the design for potential scour or deposition issues. <br /> Where issues are raised PWR will offer recommendations for achieving a more <br /> balanced sediment transport condition. <br /> 4. Report resuhs. PWR will report findings, recommendations and conclusions in a <br /> brief memorandum. The memorandum will include (where appropriate): <br /> literature references, plan mazk-ups and calculations to support PWR's advice and <br /> recommendations. <br /> 5. Optional engineering services (as authorized). This activity provides identified <br /> funds should the City ask PWR to perform detailed design calculations to support <br /> any aspect of this project. We propose to perform authorized services on a time <br /> and materials basis. The budget for any work authorized will be negotiated at that <br /> time based on the needs of the particular assignment. If the fee required exceeds <br /> the amount shown on the attached fee estimate then additional funding will be <br /> PACIFIC <br /> WATER RESOURCES INC. <br /> <br />