Columbia Heights Substation

Northern Wasco County People's Utility District is requesting sealed bids for furnishing and installing materials to rebuild a two-bay substation in two phases at 1100 East 16th Place, The Dalles, Oregon, under ITB #2026002, with bids due October 13, 2026 (updated from October 20 per the attached bid notice) and attendance at a mandatory pre-bid meeting on September 23, 2026 at 9:00 AM PDT followed immediately by a mandatory site visit — both required to qualify for bid submission.

Phase 1 work includes site development, masonry wall panels with a sliding drive gate, concrete foundations with oil containment, vaults, low and high voltage conduits, grounding, power transformer and control building installation, steel structures, non-segregated bus systems, insulators, and low-voltage wiring. The existing substation remains energized and in service during Phase 1. Phase 2, executed while Phase 1 remains operational, demolishes existing equipment and mirrors Phase 1 scope with modifications including swing and walk gates, temporary isolation fencing, and a second transformer and control building. Project completion is targeted for August 9, 2028; Phase 1 and Phase 2 substantial completion dates will be established post-award. Milestone delivery dates are specified: Transformer 1 by June 17, 2027; Transformer 2 by May 4, 2028; SWGR Metal Clad Building 1 by July 15, 2027; and Building 2 by June 1, 2028.

The contract is awarded on a lump-sum basis with unit-price work components. All workers are subject to prevailing-wage requirements. Bids must include bid, performance, and payment bonds. Liquidated damages are $5,500 per day for Phase 1 or Phase 2 substantial-completion delays and milestone delays, reducing to $1,000 per day for remaining work. Monthly progress payments are made at 95 percent of completed value with 5 percent retainage; upon Phase 2 substantial completion, payments increase to 100 percent less punch-list reserves. A 5-year warranty applies post-acceptance. Bid prices remain firm for 60 days after opening. Combined mobilization and demobilization costs may not exceed 5 percent of the total bid schedule.