Cape Horn Substation Upgrades

PUBLIC UTILITY DISTRICT NO. 1 OF SKAMANIA COUNTY, hereinafter called the OWNER, is SOLICITING bids to perform construction work for the CAPE HORN UPGRADES project. The OWNER’s Cape Horn Substation is located at 682 Canyon Creek Rd., Washougal, WA 98671.

This Project consists of the expansion and renovation of an existing 115kV to 12.47kV substation, Cape Horn Substation, located at 682 Canyon Creek Rd., Washougal, WA. The project consists of a two-phase construction approach to be performed without extended outage of existing feeders.

The work for the upgrade project mainly includes:

**Phase 1** (The existing substation remains in service until Phase 1 construction is completed and in service. OFE: Owner Furnished Equipment):

1. Site development includes removing the existing north side fence, expanding substation yard towards the north, installation of ground grid material, fence & gates, drainage, and site surfacing materials in the expanded area.
2. Construct concrete foundations for distribution rack, reclosers (OFE), regulators (OFE), breakers (OFE), and control building (OFE).
3. Construct a new distribution rack with all electrical equipment installed and tested. [...]
4. Install Trenwa precast concrete trenching system as shown in the contract drawings.
5. Furnish and install below-grade vaults, LV conduits, and drainage pipes, and additional ground grid, complete.
6. Integrate LV power and control after the pre-fabricated control building (OFE) is delivered and set by others.
7. Install new substation underground getaway conduits and vaults. [...]
8. Electrical testing of the distribution rack and preparation for energization.
9. Connect and energize the 12.5 kV distribution rack with BPA’s mobile transformer after BPA sets up and connects their mobile transformer trailer on site.
10. Coordinate outages with OWNER to cut over circuits to new riser poles and energize each circuit from new substation feeder.

**Phase 2** (The Phase 1 temporary configuration remains in service during this phase):

1. Disconnect and demolish the existing 115 kV disconnect, buses, and 12.5 kV distribution rack and equipment in the existing substation. [...]
2. Install new transformer containment and foundations. Install containment drain system.
3. Disconnect and relocate the existing transformer to the properly selected location inside the yard.
4. Remove all existing foundations.
5. To the extent possible, leave the existing ground grid in place and add & modify it accordingly based on contract drawings.
6. Construct the foundations and pads for major equipment, including 115 kV poles, 115 kV H-Frame, 115 kV breakers (OFE), 115 kV switches (OFE), CT/PTs (OFE), steel support for CT/PTs.
7. Install necessary ground grid material and LV conduits in the areas for this phase.
8. Move and install the existing power transformer from its temporary location to the assigned transformer foundation. [...]
9. Furnish and/or install major equipment including 115 kV poles, 115 kV H-Frame, 115 kV breakers (OFE), 115 kV switches (OFE), CT/PTs (OFE), steel support for CT/PTs, bus connections.
10. Integrate control and communications for the power transformers and 115 kV breakers.
11. Install and integrate other auxiliary systems (e.g., metering and lighting, etc.) in the substation.
12. Electrical testing and preparation of substation for energization.
13. Coordinate with BPA to transfer service from the mobile substation to the new transformers. Coordinate removal of temporary substation by BPA.

**Submission:** Bids must be submitted in sealed envelopes in accordance with the Instructions to Bidders and identified as “Bid #240146 - Cape Horn Substation Upgrades”. Sealed Bids must be hand-delivered or mailed to the OWNER. Sealed bids must be received no later than **2:00 p.m. PDT, on Tuesday, December 15, 2026**. Sealed Bids must include one flash drive with all electronic documents.

Proposals must be submitted on the prescribed form and accompanied by a certified check or bid bond executed on the prescribed form, payable to the OWNER as described in the INSTRUCTIONS TO BIDDERS.

Prices quoted shall remain firm for a period of 60 days after the date stated for opening of Proposals. The successful Bidder will be required to furnish payment and performance bonds for the faithful performance of the Contract, as prescribed in the Contract Documents.

The award will be made by the OWNER on the basis of that Proposal from the lowest responsive, responsible Bidder. All Proposals will be considered on the following basis:

• Conformance with the terms of the Contract Documents
• Proposal price
• Responsibility, qualifications, experience of Proposer, and safety record.

Interested bidders must attend both the **mandatory** pre-bid meeting and site visit and sign attendance sheet at both locations to qualify to submit a bid.