Joint Base Charleston Waste Water Treatment Plant Operation and Maintenance

Amendment 4 The purpose of this amendment is to: (1) Extend the solicitation close date in Section (vii) to Friday, March, 27, 2026 at 12:00PM EDT. All other terms and conditions remain unchanged. _________________________________________________________ Amendment 3 The purpose of this amendment is to: (1) Incorporate Atch-01 WWTP O&M Services PWS dated 12 Mar 2026 to reflect changes made to reduce the number of backflow preventers in use from three (3) to one (1). (2) Incorporate Atch-01 PWS Atttachemnt 8.9 Short Stay WWTP PMI Spreadhseet - Rev 1 to reflect changes made to reduce the number of backflow preventers in use from three (3) to one (1) and add the Effluent Flow Meter as an annual calibration requirement. (3) Incorporate Atch-05 WWTP List of Repairs spreadhseet. (4) Incorporate A