Phantom ranch perc area cyclic repairs

The Department of the Interior National Park Service Intermountain Region is soliciting proposals for cyclic repairs to the Phantom Ranch Percolation/Evaporation Area at Grand Canyon National Park. The project involves repairing the percolation area that was constructed in 2022/2023 to replace a failing wastewater treatment plant effluent discharge system. Key repair work includes installing HDPE liner on interior sidewall perimeters, removing 2 inches of native soil, placing #57 gravel, bedding effluent distribution piping, installing weed barriers, and addressing infiltration and plant growth issues. The work must be performed on one cell at a time to ensure the wastewater treatment plant can continue operating throughout the project duration. Amendment 0001 has extended the proposal due date to July 17, 2025, and incorporated answers to contractor questions along with updated graphics, Statement of Work, and specifications.

This procurement is designated as a Total Small Business set-aside under NAICS code 237110 for Water and Sewer Line and Related Structures Construction. The project has an eight-week period of performance and will be conducted at the remote Phantom Ranch location within Grand Canyon National Park. The work falls under the PSC category Z1ND for Maintenance of Sewage and Waste Facilities, reflecting the specialized nature of maintaining critical wastewater infrastructure in a National Park setting. The solicitation does not specify award values, incumbent contractors, or quantity details beyond the scope of repairing the existing percolation area system. The remote location and operational constraints requiring continuous wastewater treatment plant operation present unique logistical and technical challenges for potential contractors.