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CHANGE ORDER NO. ONE TO CONTRACT K-1819-125: BY AND BETWEEN THE NORMAN UTILITIES AUTHORITY AND CENTRAL CONTRACTING SERVICES, INC., INCREASING THE CONTRACT AMOUNT BY $193,130 FOR A REVISED CONTRACT AMOUNT OF $3,038,721 AND EXTENDING THE CONTRACT TIME BY 90 CALENDAR DAYS TO CONSTRUCT WATER LINE REPLACEMENTS GENERALLY ALONG THE WEST SIDE OF CLASSEN BOULEVARD AND EXTENDING APPROXIMATELY 500 FEET NORTH FROM STATE HIGHWAY 9.
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BACKGROUND: The Robinson Water Line Replacement project will ultimately replace over 6 miles of 16, 24 and 30-inch deteriorated and undersized waterlines between the Brookhaven Elevated Water Storage Tank and the Water Treatment Plant (WTP). This waterline (WL) has had numerous leaks resulting in significant loss of water and damage to the overlying or adjacent roadway. Repairs to this large diameter WL are very expensive, time consuming for Norman Utilities Authority (NUA) and Norman Public Works staff and are disruptive to traffic in the area as repairs are completed.
The Robinson Waterline Replacement Phase II project will include approximately 3,900 feet of 30-inch, 130 feet of 24-inch, 120 feet of 16-inch and 600 feet of 12-inch and smaller waterline and appurtenances, as well as numerous reconnections to existing waterlines at 36th Avenue NW; the project will also include reconstruction of about 2,900 feet of paving in the southern-most east bound lane of Robinson for the full extent of the project. Phase II is the second of 6 phases and Central Contracting Services, Inc. (Central) of Norman was the low bidder at $2,845,591 and the engineer's estimate was $3,304,750. On March 26, 2019, the NUA approved Contract K-1819-125 with Central for $2,845,591. The waterline installation has crossed Brookhaven Creek and 36th Avenue NW is now proceeding west of Brookhaven Boulevard and is about 65% complete.
Since staff received good bid prices for the Phase II project, it is intended to utilize these unit prices for aiding the current O...
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