YOSE 215363 - Replace Tuolumne Meadows WWTP

The National Park Service is soliciting proposals to replace the Tuolumne Meadows Wastewater Treatment Plant (WWTP) at Yosemite National Park in California under solicitation number 140P2026R0001. Contractors must demonstrate experience with activated sludge process facilities in municipal wastewater applications, specifically for facilities with a design capacity between 10,000 and 60,000 gallons per day, and must submit project experience documentation, past performance questionnaires, key personnel resumes, and a detailed project schedule. The solicitation requires offerors to acknowledge receipt of all amendments and provide proposals addressing the technical specifications outlined in multiple attachments covering divisions of work, drawings, and standard details. The proposal due date is January 16, 2026, at 5:00 PM Mountain Standard Time, and contractors were required to submit technical clarification questions by December 12, 2025; the government has provided two versions of Questions and Answers responses (as of December 5 and December 22, 2025) to address industry inquiries regarding piping materials, valve types, duct insulation, and other specification details.

This solicitation carries no set-aside designation and is open to all qualified contractors. The contract will be performed at Tuolumne Meadows in Yosemite National Park, California, with construction limited to the seasonal access window of June 15 through October 15 each year over an anticipated six-year project period. The government has identified four primary staging areas (May Lake, Existing WWTP, Parson's Lodge Parking Lot, and Concessionaires Parking Lot) with specific usage restrictions, shared space provisions, and restoration requirements detailed in the prebid clarifications amendment. A prebid site visit was conducted on October 22, 2025, with representatives from multiple construction firms including Orca Construction, G.S.E., Microwater, Garney, and Tetra in attendance. The specific contract award value and final budget allocation are not disclosed in the available solicitation documents, though the comprehensive scope of work including equipment specifications for rotary drum screens, compactors, and extensive piping and utility infrastructure indicates a substantial construction project requiring significant resources and technical expertise.