GJN3870 OBEC Contract - Laserfiche WebLink

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'Emily Proudfoot ~ i EisliEFisr December 8, 2004 Page 2 we will work closely with the artist to meet the intent of the artist's design for the bridge up to the level of the deck including the rail system. We also understand that the artist will be designing or fabricating the sculpture ornament above deck. In addition, it is our understanding that the City has some timber available; and if feasible, will be used in the construction of this project Based on our site visit, we have detemuned that the interior piers are below top of bank and within the City delineated wetlands boundaries. It is our understanding that the City will prepare all permits including the environmental permit applications and no-rise certification needed for the project; therefore, we have not included them in our proposal. We have, however, included performing a hydraulics analysis and no-rise certification as extra work per your request. In reviewing the available hydraulic data for the site including the FEMA Flood Insurance Study (FIS), the 100-year flood appeazs to stay within the top of banks at approximate elevation 427 feet. The preliminary survey shows the top of banks at approximately elevation of 427 feet and a top of bank width of approximately 90 feet. Therefore, the proposed bridge length currently does not span the entire floodway; and a no-rise hydraulic analysis will be required: At this time the bridge is anticipated to be pile supported based on recommendations from FEI's knowledge of conditions encountered on previous explorations at Roosevelt Middle School. Pile foundations aze preferred for high vertical and lateral capacity; resistance to scour, and low disturbance below grade that minimizes environmental impacts and associated permitting actions. FEPs proposal for geotechnical engineering is attached as a part of this proposal. SCOPE OF WORK At this time we propose to perform this work in the following identified tasks: ¦ Task 1-Contract Management and Data Collection ¦ Task 2 -Preliminary Design incorporated in a report for the artist's bridge concept containing general arrangement of structure, plan & elevation, typical sections, estimated costs, and related information. This phase also incorporates the artist`s and City's input for the work, review, and approval. ¦ Task 3 -Final Design. Again, we will seek the artist's and City's input as work progresses. ¦ Task 4 -Construction Engineering Assistance. This phasing will allow us to provide minimal construction engineering needed to verify that construction conforms to the Engineer's plans and specifications. TASK 1 -CONTRACT MANAGEMENT AND DATA COLLECTION Task 1.1 -Contract Management: The goal of this task is to set up communications between OBEC and the City and keep the City informed of progress, payments, and related project issues. Task 1.2 -Data Collection: This task includes reviewing all available data including a thorough review of Parks planning work, surveys, hydraulic studies, artist's renderings, and related information. (Note: Much of this has already been reviewed for the prepazation of this proposal.)