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CHANGE ORDER NO. ONE TO CONTRACT K-1617-121: BY AND BETWEEN THE NORMAN UTILITIES AUTHORITY AND FOLEY COMPANY INCREASING THE CONTRACT AMOUNT BY $207,727.96 FOR A REVISED CONTRACT AMOUNT OF $30,197,892.96 AND ADDING 87 CALENDAR DAYS TO THE CONTRACT FOR THE WATER TREATMENT PLANT PHASE II IMPROVEMENTS.
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BACKGROUND: On May 22, 2012, the Norman Utilities Authority (NUA) approved Contract K-1112-124 to perform final design services for the Phase II Water Treatment Plant (WTP) Improvements with Carollo Engineers, Inc. An 8-month ozone pilot project was performed as a part of that contract to determine the final design parameters and arrangement of the ozone system. Three process alternatives were studied and it was concluded that ozone should be used to address taste and odor concerns and pharmaceutical/algal toxin reduction while a system employing Ultraviolet Light would function as the primary disinfectant.
On January 13, 2015, Norman citizens approved a water rate increase with 67% voting in favor of the increase. The rate increase was expected to generate capital of approximately $49 million of which $31 million was to be used for the WTP Phase II Upgrade.
On February 2, 2015, the NUA approved Amendment No. 1 to Contract K-1112-124 to Carollo Engineers, Inc. to complete the design, provide construction administration services, and provide full-time on-site construction observation services for the WTP Phase II Upgrade. The design process was completed and plans and specifications were submitted to the Oklahoma Department of Environmental Quality (ODEQ) on October 4, 2016. The ODEQ approved the plans and specifications on January 18, 2017. Proposed improvements include:
* New 17 million gallons per day (MG/D) ozone system;
* Ultraviolet disinfection system;
* On-site hypochlorite solution generation system;
* Intermediate (low lift) pump station;
* Chemical feed equipment and new chemical feed building;
* New maintenance building;
* New admin...
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