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DOUGLASVILLE ¿ DOUGLAS COUNTY WATER AND SEWER AUTHORITY 8763 Hospital Drive Douglasville, Georgia 30134 REQUEST FOR PROPOSALS 2025 SEWER UPGRADE AND REHABILITATION RFP#197 July 9, 2025 The Douglasville ¿ Douglas County Water and Sewer Authority (hereinafter referred to as the ¿Authority¿) is soliciting sealed proposals from qualified firms for professional and technical services for the 2025 Sewer Upgrade and Rehabilitation (the ¿Project¿), as more fully described in the Request for Proposals. All designs, materials, labor, equipment, and supervision necessary to complete the Project will be provided by the selected offeror or contractor. The scope of services for this Project includes sewer rehabilitation services and the provision of all equipment and services set forth in Appendix A and the referenced drawings within this Request for Proposals. All services will be ¿turnkey¿ and require minimal involvement of Authority personnel. The work shall include the raising of one (1) covered manhole, installing one (1) manhole, and the rehabilitation to approximately: ¿ 1,726 linear feet of 8-inch ductile iron pipe, ¿ 148 linear feet of 12-inch ductile iron pipe, ¿ 296 linear feet of 8-inch vitrified clay pipe, ¿ 1,447 linear feet of 8-inch vitrified clay pipe/concrete, ¿ 1,468 linear feet of 8-inch vitrified clay pipe/ductile iron pipe, ¿ 180 linear feet of 6-inch ductile iron pipe, and ¿ 124 linear feet of 4-inch cast iron/concrete pipe. These sewer lines have degraded due to exposure to hydrogen sulfide gas. Rehabilitation options may include open trench replacement of the line, pipe bursting, or the installation of a liner system such as cured-in-place pipe (CIPP), swagelining, or any combination of these methods. The finished product shall be of a material that is inert to hydrogen sulfide. If replacement with ductile iron pipe is proposed, the ductile iron pipe shall be lined with a ceramic epoxy lining such as Tnemec Series 431 Perma-Shield PL
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