Explanation
1. BACKGROUND
This ordinance authorizes the Director of Public Utilities to enter into a contract with HDR Engineering, Inc. for professional services for the SWWTP Biofilter Cold Weather Reliability Improvements project, CIP #650352-100008, in an amount up to $712,102.10.
This project will provide preliminary design services for upgrades and improvements to the existing Odor Control Facility (OCF), the carbon Biotower and ventilation system serving the Sludge Loadout Building (SLB), and to the foul air fans at the Gravity Thickening Building (GTB) to improve odor control. These improvements will provide active ventilation, prevent corrosion, reduce foul air, and provide an Interconnector Junction Chamber (IJC) Odor Improvement Report on the IJC regarding the probability of success using existing OCF equipment to improve odor reduction or design a separate odor control facility for the IJC under a future contract.
Two future modifications to this contract are anticipated. The first modification will be for Step 2 - Detailed Design Services and will provide bidding and contract documents for the construction phase of this project. The second modification will be for Step 3 - Services during construction which includes technical field representation and other services throughout the construction phase of the project.
The planning area for this project is 64 - Far South.
TIMELINE: The total term for the original contract will be for 270 days from the Notice to Proceed until on or around May 31, 2024, at which time a modification for Step 2 - Detailed Design Services will be requested. Upon completion of Step 2 - Detailed Design Services, a second modification will be requested for Step 3 - Services during construction.
ESTIMATED COST OF PROJECT: The proposed award amount is $712,102.10, including a 10% contingency amount that will be utilized to fund needed and approved changes in the work. Two future contract modifications are anticip...
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