AgdaPkt 2016-12-12 Closed and Joint SA PFA

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6.1.A. - Page 14 A. B. EXHIBIT "A" SCOPE OF SERVICES PROJECT DESCRIPTION The 'City of Redwood City (City) seeks to improve the concrete lined sections of Redwood Greek in connection with the 2017 Redwood Creek Improvement Project. Over time, some sections of concrete lined channels and box culverts developed deficiencies such as cracking, spalling, exposed, damaged and/or corroded reinforcing steel, joint filler deterioration, horizontal/vertical joint displacements, and wall rotations. The City would like to repair and rehabilitate these concrete structures to improve their conditions. This project is the first improvement project for the first year of a multi-year repair and rehabilitation program. This project involves the engineering and construction services by a qualified engineering consulting firm. The Consultant will prepare the plans and specifications, cast estimates, contract documents for bidding, provide bid support and construction services and prepare the final as -built drawings. SCOPE OF WORK In 2012, the City contracted with BKF Engineers to document deficiencies of the Redwood Creek and its four tributaries. As a result, the City obtained permits from the US Army Corps of Engineers, California Regional Water Quality Control Board, and California Department of Fish and Wildlife to work on the improved portions of Redwood Creek. Upon review and evaluation of identified deficiencies from 2012 as well as recent creek walks with Public Works personnel, Engineering staff selected two sections, denoted Reach 1 and Reach 2, of Redwood Creek for this project. The following are some issues and deficiencies that need to be addressed for the selected reaches of the Project. These are deficiencies previously identified by the City's consultant in 2012 for the Redwood Creek Deficiency Review report. Some additional photos and deficiencies identified in September 2016 by City staff have also been included and denoted with an asterisk (*). Reach 1 (Jefferson Branch): waypoint I Observation Notes I Ref. Photos I Channel Lining JEFFERSON BRANCH (Approx. 951D LF between Clinton Stet and El Camino Real) concrete rectangular JE -232 � North face section rotating forward T 700^ 701N charme! ? 7S5tit� ; iconcrete rec anquiar Jim -233 � Notth tatC.v SeCti r, rctaVrg tosvmra 2" 705N 7014 cfaanrse£ 4 aQ l2o report), 5" in Sept 20 6 � .e- & 6335 i i';f'J: 12Y)9 -1r, RL Page 10 of 23 ATTYWAGR.2016.325Nvood Rodgers, trio.