ORPI 240841 Replace Primary Water System for Maint

The National Park Service is soliciting proposals to replace the primary water distribution system at Organ Pipe Cactus National Monument in Arizona (Solicitation No. 140P2025R0080, Project ORPI 240841). The work includes replacing approximately 31,450 linear feet of aging asbestos-cement pipe with new C900 PVC and HDPE pipe, installing two welded stainless steel water storage tanks (50,000 and 100,000 gallon capacities), constructing a new domestic water supply well, upgrading the well house infrastructure, installing SCADA systems, and implementing an automatic meter reading system. Contractors must demonstrate relevant experience through project experience questionnaires, key personnel resumes, and past performance questionnaires, with evaluation focusing on technical capability, past performance on similar projects, schedule management, cost control, and compliance with small business subcontracting requirements. The solicitation requires compliance with prevailing wage rates established by the Department of Labor for Pima County, Arizona, adherence to National Park Service operational constraints including restrictions on construction during peak visitor seasons, and coordination with multiple agencies including US Border Patrol and Arizona Department of Environmental Quality. The original proposal deadline of September 22, 2025, was extended multiple times, with the final deadline set for November 17, 2025, at 2:00 PM Mountain Standard Time, and a mandatory site visit was held on September 4, 2025.

This is a full and open competition with no small business set-aside designation. The contract is a major construction project with an estimated value exceeding $10 million, subject to performance and payment bond requirements. The performance period is 390 calendar days, with a proposed Notice to Proceed date of March 1, 2026, requiring contractors to begin work within 10 calendar days of award. The base contract (CLIN 1) covers the 100,000 and 50,000 gallon tanks with piping, residential and maintenance area water distribution replacement, SCADA installation, domestic well installation, and well house improvements, with four optional contract line items available for campground system upgrades and electrical conduit work. Work is scheduled to take place at Organ Pipe Cactus National Monument in Ajo, Arizona, with specific restrictions limiting general construction work hours to 6:00 AM to 6:00 PM Monday through Friday and requiring special approval for weekend or night work to minimize disruption to the 208 campground sites and visitor facilities that depend on the existing water infrastructure.