Explanation
1.0 BACKGROUND: This Ordinance authorizes the Director of Public Utilities to modify and increase the professional engineering services agreement with Stantec Consulting Services, Inc. for the Watershed Miscellaneous Improvements - Hoover Dam and Griggs Dam Independent Consultant Review Project, Division of Water Contract No. 2070.
Work performed to date under the original contract includes an independent evaluation and condition assessment of two existing Class I dam structures for the City of Columbus water supply reservoirs - Hoover and Griggs. The evaluation and condition assessment of Hoover Dam and Griggs Dam and associated appurtenances were consolidated into a Dam Safety Evaluation Report and a Maintenance Report for Hoover Dam and a Dam Safety Evaluation Report, a Maintenance Report, and an Operations and Maintenance Manual for Griggs Dam.
Work to be performed under this Contract Modification (Mod No. 1) includes an evaluation of dam pressure relief systems and associated monitoring needs (Phase I), detailed design (Phase II) and bidding services (Phase III), and engineering services during construction (Phase IV).
Work under Phase I will include studies to assess dam pressure relief mechanisms at Hoover Dam and define associated monitoring protocols for the City to follow.
Detailed Design (Phase II) will prepare construction contract documents (including specifications and drawings) in accordance with City of Columbus, Division of Water direction for construction and implementation of the proposed improvements. Detailed Design also includes plan and specification City review.
Bidding Services (Phase III) includes assisting at the Pre-Bid Conference and bid opening, tabulating bids, making an award recommendation for lowest and best bid, and preparing Conformed to Contract documents.
Engineering Services During Construction (SDC) (Phase IV) will provide technical project representation (TPR) duties, construction administration and ins...
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