IFB-PrimaryClarifierNo1-15 - Improvements to Primary Clarifier No. - Wastewater Treat Plant

Summary of Specifications:
The City of Durango invites interested, qualified persons or firms, capable of providing the required service to submit bids for Improvements to Primary Clarifier No. 1 at the Wastewater Treatment Plant, 105 S Camino Del Rio, Durango CO 81303. 

There are two 70 foot diameter primary clarifiers that provide full redundancy to the treatment process. The original clarifier (Primary Clarifier No. 1) was installed during construction of the original plant in 1952 and the second (Primary Clarifier No. 2) was installed during an upgrade to the WWTP in 1982. Primary Clarifier No. 2 is equipped with a fiberglass cover for odor control while Primary Clarifier No. 1 is not. Primary Clarifier No. 1 is currently not in service. 

This project consists of rehabilitation of Primary Clarifier No. 1 to include the following new items: 1. Demo of existing clarifier mechanism and grout layer 2. A plow-type drive mechanism 3. A concrete coating system 4. A FRP weir 5. A scum collection system and FRP scum baffle 6. A non-potable water flushing line 7. Grout replacement