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April 6,2007 <br /> Page 4 <br /> 1 Approximate levee footprint that would be required to raise existing levees to the 10-year plus 2-feet <br /> elevation;and <br /> • Approximate footprint for a potential new levee along the 12th Street NE alignment that has a crest <br /> elevation at the 10-year plus 2-feet elevation. <br /> Deliverables:These assessments and maps will be provided as part of the report prepared under Task 5. Maps <br /> will be provided as color plates in the report,and in electronic form(*.shp format). <br /> TASK 4—ALTERNATIVES <br /> Adolfson will provide a summary description of potential alternatives for consideration by the City. These will <br /> include a description of the requirements for certification of the levees for entrance into the Corps maintenance <br /> program and a description of requirements for FEMA to agree they provide flood protection. <br /> Three alternatives will be described and an Opinion of Probable Cost provided for each. These may include; 1) <br /> protecting only the WPCF,2) accepting Diking District No. 5 Ievees west of I-5 and east of I-5 and south of 12th <br /> Street NE, or 3)a varied level of protection within Diking District No. 5. <br /> Deliverables:These alternatives will be described with an Opinion of Probable Cost provided in the report <br /> described in Task 5, below. <br /> TASK 5—REPORT PREPARATION <br /> A report will be prepared for the City that documents the work completed for the previous tasks. A draft will be <br /> prepared for City review before finalizing. Once comments are received the draft will be revised and a final <br /> version of the report will be delivered to the City. <br /> Deliverables: <br /> • Five printed copies of the draft report; <br /> • An electronic version of the draft report(in*.pdf format); <br /> • Five printed copies of the final report; and <br /> • An electronic version of the final report(in*.pdf format). <br /> ASSUMPTIONS <br /> We have made several assumptions concerning this work, including: <br /> 1. Rights-of-entry for the field reconnaissance will be provided by the City. <br /> 2. Field reconnaissance will include the Diking District 5 levees on Smith Island as shown on Figure 1. <br /> This includes: <br /> a. Existing levees west of I-5 but within Diking District 5, <br /> 6 5 <br />