This contract concerns the interim remedial‑action work at the historic Yakima Valley Transportation trolley‑barn site. The scope includes site mobilization, erosion and sediment control, installation of a high‑visibility fence, de‑commissioning of an underground storage tank, concrete removal, extensive excavation and stockpile management, transport and disposal of contaminated material, in‑situ bioremediation, backfilling, base‑course surfacing, as‑built surveying, and related repair or replacement tasks. Competitive bids were opened on May 14 2015 and a low‑bidder recommendation was signed on May 26 2015, pending final approval by the City Manager. Four local environmental/construction firms and one Seattle‑based remediation firm submitted proposals, with the lowest total bid reported at $186,623.36.
• Comprehensive environmental cleanup and site preparation covering UST removal, contaminated soil handling, and bioremediation.
• Multiple trade items priced individually (unit‑price format) but aggregated into a lump‑sum total.
• Open competitive bidding with no set‑aside designations; award pending final municipal approval.