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CHANGE ORDER NO. SIX TO CONTRACT K-1617-121: BY AND BETWEEN THE NORMAN UTILITIES AUTHORITY AND ENERFAB, INC., SUCCESSOR TO FOLEY COMPANY, INCREASING THE CONTRACT AMOUNT BY $124,533.36 FOR A REVISED CONTRACT AMOUNT OF $30,735,496.42, ADDING 364 CALENDAR DAYS TO THE FINAL COMPLETION DATE FOR THE CONTRACT, AND FINAL ACCEPTANCE OF THE PROJECT.
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BACKGROUND: On May 22, 2012, the Norman Utilities Authority (NUA) approved Contract K-1112-124 with Carollo Engineers, Inc. to perform final design services for the Phase II Water Treatment Plant (WTP) Improvements. An 8-month pilot project was performed as a part of that contract to determine the final design parameters and arrangement of the treatment 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 complete the design, provide construction administration services, and provide full-time on-site construction observation services for the WTP Phase II Upgrade. The design 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. The Phase II WTP 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 administration bu...
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