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HomeMy WebLinkAboutCC 11 T.R.R. INTERCHG 05-16-88DATE: MAY 6, 1988 CONSENT CALENDAR NO. 11 5-16-88 Inter- Com TO: WILLIAM HUSTON, CITY MANAGER FROM: PUBLIC WORKS DEPARTMENT/ENGINEERING DIVISION SUBJEOT: TUSTIN RANCH ROAD INTERCHANGE CONSULTANT cONTRACT AMENDMENT FILE #897D RECOMMENDATION: That the Tustin City Council at their meeting of May 16, 1988 approve the amendment to the City/Irvine Company agreement for design consulting services for the Tustin Ranch Road/Santa Ana Freeway Interchange Project to provide for an augmentation of $83,906 to the Dokken Engineering design contract. BACKGROUND: In November 1986, the City of Tustin entered into an agreement with ~he Irvine Company (TIC) which designated TIC as the project ministrators for the engineering design services on the Tustin Ranch ~oad/I-5 Interchange project. After mutual concurrence by City staff and TIC, Dokken Engineering was also selected as the design firm to provide said final design services as a sub-consultant to TIC. The original design fee as proposed by Dokken Engineering was in the amount of $343,045.00. DISCUSSION: As the design phase of the project progressed, it became apparent that the original request for proposals did not cover all facets for the required final project design. Additionally, Caltrans' design requirements and the environmental document preparation surfaced other design work which was not included within Dokken's original scope of work. All design work is substantially complete and the plans/ specifications are being processed by Caltrans for final approval and authorization to advertise for bids. The total cost of the extra work requires an augmentation of $83,966.00 to the original contract amount of $343,045.00'. The extra work items are categorized into seven areas as follows: Initial preliminary geometric design per Caltrans requirements ........................... $ 7,500.00 Southbound exit ramp right-of-way studies ....... Auto Center frontage right-of-way evaluations ... Retaining wall/soundwall designs per EIR requirements .................................... 3,000.00 4,500.00 29,200.00 Tustin Ranch Road Interchange Project May 6, 1988 Page 2 Se Redesign of drainage facilities per Caltrans requirements .................................... 23,836.00 Additional foundation design for retaining wall/ soundwall designs in No. 4 above ................ 6,470.00 Retaining wall design to minimize right-of-way take at Auto Center development ................. 8,900.00 No additional budget appropriation is necessary to approve this contract amendment. Sufficient funding exists in the current Redevelopment Agency Project Budget and the Assessment District Project Budget to cover this contract amendment. The new Dokken Engineering contract mount will be $426,951.00. Bob Ledendecker Director of Public Works/city Engineer BL:mv