BID 2026-78 Tri-City Water Resource Recovery Facility (WRRF) Aeration Basin Improvements

Clackamas County ("County") on behalf of Water Environment Services through its Board of County Commissioners is accepting sealed bids for the Tri-City Water Resource Recovery Facility (WRRF) Aeration Basin Improvements Project until **November 10, 2026, 2:00 PM, Pacific Time**.

Engineers Estimate: $3,700,000.00

The completed Work will provide Owner with modifications and improvements to existing facilities as follows:

1. Prior to each Phase of this Project requiring access to or work within an Aeration Basin or associated channel the Owner will take offline a pair of interlock Basins, Influent and Effluent channels and drain these areas, at which point the offline areas will be turned over to the Contractor for the season's work activities directly related to these areas There are two main Phases for this Project to take place over two summer shut-down seasons.
2. Cleaning: Once the Owner has taken offline, drained and turned over to the Contractor an area of work for the season, the Contractor shall completely clean all aeration basins, influent channels, side and end effluent channels which have been drained. Cleaning activities to include pressure wash clean, removal of all moss, vegetation, debris, sludge, etc.
3. Aeration Basins:

ALP Piping

• In Aeration Basin 1 (AB1), AB2, AB3, and AB4, reconfigure and replace ALP piping sections containing the flow transmitters and control valves in Aeration Zones 2-5. Add piping to incorporate control valve and flow transmitter to Aeration Zone 2. This piping is to be elevated from its current position so that control valves and flow transmitters are over the deck and be easily accessed. The final configuration will result with each of the four basins having four fully automated aeration zones.
• Replace diffuser membranes in AB1, AB3, and AB4 to match the previously replaced diffuser membranes in AB2. (Contractor to replace damaged diffusers with Owner provided replacements).

AHP Piping

- Extend the AHP piping for Aeration Basins AB1, AB2, AB3, and AB4 to supply high pressure air to the new Zone 2 pneumatic flow control valves.

**Submission method:** Proposals will only be accepted electronically thru a secure online bid submission service, Bid Locker. Email submissions to Clackamas County email addresses will no longer be accepted. Completed documents must arrive by the deadline indicated in Section 1 or as modified by Addendum. LATE PROPOSALS WILL NOT BE ACCEPTED.

Bidding Documents can be downloaded from the state of Oregon procurement website ("OregonBuys"), Document No. S-C01010-00018145. Prospective Bidders are responsible for obtaining any Addenda from the Website.

Each Bid must be accompanied by either 1) a cashier's check or a certified check drawn on a bank authorized to do business in the State of Oregon, or 2) a Bid bond [...] for an amount equal to ten percent (10%) of the total amount Bid. [...] The Bidder is required to execute the contract forms as provided, including a performance bond and a payment bond from a surety company licensed to do surety business in the State of Oregon, within seven (7) calendar days after receipt of the contract forms.

Unless all Bids are rejected, the Owner will award a contract based on the lowest responsive Bid from a responsible Bidder.

Prevailing Wage Rates requirements apply to this Project because the maximum compensation for all Owner-contracted Work is more than $50,000.

Bidders must perform Good Faith Effort and submit Form 1 and Form 2 for the Bidders Bid to be considered responsive. Form 1 and Form 2 must be submitted within two (2) hours after the Closing Date and Time.

Within two (2) working hours after the Bid Closing, all Bidders shall submit to the County a disclosure form identifying any first-tier subcontractors.