National Park Service (NPS) ¿ Denver Service Cente

The National Park Service Denver Service Center is procuring construction services to replace the Mammoth Wastewater Collection System at Yellowstone National Park under Solicitation No. 140P2025B0001. The project involves comprehensive sewer infrastructure rehabilitation including open cut excavation, pipe bursting, CIPP lining, and manhole repairs/replacements across approximately 8,600 linear feet of sanitary sewer mains in the Mammoth Hot Springs area. Work encompasses multiple rehabilitation techniques with specific contract line items covering mobilization, excavation and point repairs (3,646 linear feet), pipe bursting (3,888 linear feet), and manhole work, along with optional bid items for additional excavation and CIPP lining. The contractor must maintain continuous wastewater flow during construction through temporary bypass pumping systems and comply with strict environmental protection guidelines within the national park setting. Technical questions were due by July 31, 2025, with a pre-bid site meeting held on the same date, and the bid opening occurred on August 12, 2025, at 1:00 PM at the Mammoth Hotel's Minerva Room.

This procurement is designated as a 100% small business set-aside under NAICS code 221320 (Sewage Treatment Facilities) with a $35 million size standard threshold, and the total contract value exceeds $10,000,000. The project requires a 365-calendar day performance period with work expected to commence immediately after contract award to complete critical tasks outside the peak tourist season, with contract award anticipated in late August 2025 and notice to proceed following approximately one month later. Performance and payment bonds are required, with liquidated damages set at $1,455 per calendar day of delay, and the contractor must remove all spoils from the park while providing archaeological monitoring at designated locations. The work involves replacing and rehabilitating 67 specific sewer manholes across different construction zones, with pipe materials including HDPE, PVC, VCP, and cast iron in various diameters ranging from 4 to 18 inches. All construction activities will take place within Yellowstone National Park's Mammoth Hot Springs area in Gardiner, Montana, requiring careful coordination with park operations and adherence to Davis-Bacon wage determinations for Park County, Montana.