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<br />EXHIBIT IIAII <br /> <br />Belmont Slough Pump Station <br />Scope of Work <br /> <br />PHASE I. PRELIMINARY DESIGN <br /> <br />We have detennined in the brief feasibility study submitted on May 16, 2005, that the existing <br />Belmont Slough Outlet Structure can be converted into a pump station structure with a pump in <br />each of the two chamber structures. The City of Redwood City has reviewed the study and agreed <br />on using the Flygt PL type impeller submersible pump for the final design of the outlet structure, as <br />recommended. <br /> <br />In the preliminary final design phase, we will verify the feasibility of installing two PL impeller <br />pumps within the west side chamber of the existing outlet structure. The pump discharge pipe for <br />each pump will be installed inside the existing west side 60" RCP to the Belmont Slough. The <br />remaining half of the existing outlet structure will remain unchanged and function as a lagoon <br />gravity outlet structure. During the preliminary design phase, BKF will fine tune the PL <br />submersible pumps design, and optimize the size of the discharge pipes. It is our understanding that <br />the City of Redwood City will inspect the existing 60" discharge pipes and repair any leakage to <br />restore the pipes to a sound condition. During this phase, we will also be developing the electrical <br />control system program with VFD for each pump and will contact PG&E to discuss the availability <br />of electrical power for the two submersible pumps. <br /> <br />The key to taking maximum advantage of the new pump station and maximizing circulation along <br />the west side of the Redwood Shores Lagoon will be the pump control. The pump control system <br />will need to make "intelligent decisions" regarding when to turn pumps on and off. The pump <br />control design is also based on the lagoon water elevation. Variables such as the rainfall occurring <br />in the lagoon, Belmont Slough water elevation, and whether the tide is going in or out will be taken <br />into consideration. <br /> <br />Task 1 - Preliminary Engineering and Design Development Report <br /> <br />The report will include: <br /> <br />1. Review of existing engineering as-built drawings and reports <br />2. Finalizing pump selection <br />3. Optimizing pump discharge pipe size and material <br />4. Evaluation of pump control and outlet structure <br />5. Preparation of preliminary proj ect cost estimate <br />6. Meetings with City staff to review findings <br />7. Preparation of brief design report <br /> <br />d --- -,r <br />