Uptown and South Commons CSO Disinfection and Dechlorination and Uptown CSO Grit Improvements

1. Construction of a new disinfection building with unloading station and a new chemical feed vault on an existing 72-inch combined sewer line at the 29th Street site; 2. Upgrades to the dechlorination system at the Uptown CSO Facility, and conversion of the existing advanced treatment building to a chlorine contact chamber; 3. Upgrades to the disinfection system at the South Commons CSO Facility. 4. Installation of a new dechlorination system at the South Commons CSO Facility, conversion of an existing sampling station to a new dechlorination feed station, construction of a new sampling station with fiberglass building, and site improvements including a new access driveway from the existing driveway to the new sampling station. 5. Re-piping the grit discharge lines from six existing grit vortex units, rerouting piping, replacing vortex unit influent pinch valve sleeves, replacing existing pumps and installing new pumps at the Uptown CSO facility. The successful Bidder for this Contract will be required to furnish a satisfactory Performance Bond and Payment Bond each in the amount of 100 percent of the Bid. The Owner reserves the right to reject all Bids, to waive informalities and to readvertise. Furnishing all products, materials and equipment and performing all labor necessary to complete and put into operation the Uptown and South Commons CSO Disinfection and Dechlorination (Project No. 35774-71) SCADA and Instrumentation, Building Security Systems, Construction Verification Surveying, Removal of Unsuitable Material and Replacement with, Crushed Stone. MBE (10%), WBE (5%) Uptown and South Commons Disinfection and Dechlorination project - substantially completed within 400 consecutive calendar days; final completion- 460 consecutive calendardays Uptown CSO Grit Improvements project - substantially completed within _550___ consecutive calendar days; final completion- 610___ consecutive calendar days. 1. Construction of a new disinfection building with unloading station and a new chemical feed vault on an existing 72-inch combined sewer line at the 29th Street site; 2. Upgrades to the dechlorination system at the Uptown Park CSO Facility with a new storage tank and chemical feed pumps, and conversion of the existing advanced treatment building to a chlorine contact chamber; 3. Upgrades to the disinfection system at the South Commons CSO Facility including replacement of two bulk storage tanks and new chemical feed pumps; 4. Installation of a new dechlorination system at the South Commons CSO Facility with two new bulk storage tanks and new chemical feed pumps, conversion of an existing sampling station to a new dechlorination feed station, construction of a new sampling station with fiberglass building, and site improvements including a new access driveway from the existing driveway to the new sampling station. 5. Re-piping the grit discharge lines from six existing grit vortex units, reroutingpiping, replacing vortex unit influent pinch valve sleeves, replacing existing pumps and installing new pumps at the Uptown CSO facility. Question Deadline 05/25/2023 Information / Clarification shall be submitted in writing by Email.

Division 33 -

Utilities, Instrumentation and Control for Utilities, Water Utilities, Water Utility Distribution Piping, Water Utility Distribution Equipment, Disinfecting of Water Utility Distribution, Water Utility Storage Tanks.