Agmt17 Cal Engineering & Geology, Inc.

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EXHIBIT A SCOPE OF SERVICES A. PROJECT DESCRIPTION The City of Redwood City (City) seeks to improve the concrete lined sections of Redwood Creek. Upon review and evaluation of identified deficiencies by the City's consultant in 2012 as well as recent creek walks with Public Works personnel, staff has identified two reaches of the creek to be improved in connection with the 2017 Redwood Creek Improvement Project: Jefferson Branch between Clinton Street and El Camino Real (approximately 950 feet) and Redwood Branch between Oak Street and Hudson Street (approximately 1500 feet). The City contracted with Wood Rodgers, hie. for the engineering and construction services to identify and address deficiencies within these reaches. B. SCOPE OF WORK There are several locations within the two project reaches of the 2017 Redwood Creek Improvement Project where the existing vertical channel wall is tilted inwards up to 7 inches relative to the adjacent wall panel. Preliminary analysis completed by Wood Rodgers, Inc. revealed that the tilting wall panels are likely the result of the moment resisting steel in the wall yielding due to loading (reduced rebar area), corrosion of the rebar at the base (reduced rebar area), or a combination of the two. This project involves the concrete destructive testing program to determine the existing condition of reinforcing steel near the base of deflected concrete wall sections and to determine the current strength of concrete and reinforcing steel used for various other channel wall segments. The information will be critical for providing recommendations for either stabilizing or replacing existing channel segments that have exhibited wall deflection. The concrete destructive testing program will be conducted in the Jefferson Branch project reach and results will be extrapolated for use on the Redwood Branch project reach. Review of as -built drawings for both project reaches indicate that the channel construction utilized similar designs and construction was completed at roughly the same time. C. SCOPE OF SERVICES The scope of engineering services described herein is the minimum necessary to meet the City's objectives. The contractor is expected to utilize their expertise in carrying out the services set forth herein. Cal Engineering & Geology, Inc. (Contractor) shall perform and provide the following: REV: 02-10-17 PR Page 6 of 9 ATTY/AGR.2017.034/Cal Engineering & Geology, Inc.