Explanation
1. BACKGROUND
This ordinance authorizes the Director of Public Utilities to enter into a contract with AECOM Technical Services, Inc. for professional engineering services for the Three Creeks Relief Tunnel project, CIP #650493-100000, in an amount up to $5,569,669.75.
This project is necessary to relieve a hydraulic bottleneck in this section of sewer caused by upstream development. It will reduce sewer overflows and water in basement occurrences in the upstream sewersheds. The initial funding for preliminary engineering will provide for the production of a Preliminary Engineering Report (PER) summarizing key design considerations factoring into the selection and recommendation of a horizontal and vertical sewer alignment for a new sewer relief tunnel ranging in size from 10 feet to 12 feet. Preliminary engineering services will include field investigations, surveying, easement research, subsurface geotechnical investigations, hydro-geologic investigations, hydraulic analysis, environmental investigations, and report production. A future contract modification will provide for detailed design services including production of construction drawings, specifications, easements necessary to complete the work, preparation of all permits, preparation of bidding documents, engineering services during construction, and production of record plans.
Community Planning Area: 64 - Far South
TIMELINE: It is expected to take approximately two years for the planning and design phases. Once the project is bid for construction an additional two years will be needed for construction, warranty and record planning to complete the project.
ESTIMATED COST OF PROJECT: The proposed award amount is $5,569,669.75, including a 10% contingency amount that will be utilized to fund needed and approved changes in the work.
Original Contract $5,569,669.75
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