This document outlines a federal contract opportunity to replace a pond liner at Lake Mead National Recreation Area. The solicitation number is 140P8121R0005 and seeks to replace Pond Liner #1 at Katherine Landing. The Department of the Interior National Park Service Pacific West Region is the contracting agency. Offerors should provide materials and labor to replace the existing pond liner. The response deadline and award date are not specified, but the location is in Lake Mead National Recreation Area in Arizona. The opportunity is designated as a solicitation for a contract to replace infrastructure at a National Park Service site.