The purpose of this amendment is to provide answers to contractor site visit questions, incorporate a revised SOW amd to extemd the RFQ close date from 2 Feb 2023 to 7 Feb 2023.The location needs a Qualified Contractor to provide labor, supervision, equipment, and supplies/materials, except those furnished by the Government, necessary to perform the replacement of existing sewer lines in men’s and women’s restrooms, including converting one toilet area in each to a shower, removing existing equipment, installing new equipment, electrical, flooring, walls, counter, and sink. Existing flooring will need to be abated and all construction completed as described in this PWS. Construction project is located at the PWS Southwest Watershed Research Facility in Tucson AZ. The contractor shall maintain the current facility buildings, grounds, and equipment to their most productive and efficient state of performance. The work is located at theUSDA-ARS-PWA Southwest Watershed Research Facility2000 E Allen RdTucson, AZ 85719.The estimated magnitude of this project is between $25,000 and $100,000.This is a Total Small Business Set-AsideNAICS: 237110 Water and Sewer Line and Related Structures ConstructionPSC: J046 Maint/Repair/Rebuild of Equipment – Water Purification and Sewage Treatment EquipmentSmall Business Size: