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La Verne approves $3.11 million contract to replace aging Plateau Summit water main
Summary
The La Verne City Council awarded a $3,110,000 contract to M&R Construction to replace and reline about 2,000 feet of a 16-inch transmission main in the Plateau Summit area, authorizing a 15% contingency that brings the projectbudget to a possible $3,576,500. Council approved the measure 3-0.
La Verne officials on Oct. 7 approved a $3,110,000 public works contract with M&R Construction to rehabilitate the Plateau Summit water transmission main serving northern La Verne.
Acting utilities manager Ryan Ciotti told the council the project will reline roughly 2,000 feet of 16-inch pipe, including about 1,400 feet using a Kevlar “bullet” liner and about 600 feet of traditional ductile-iron replacement. The work includes two new 16-inch transmission valves, coordination with a Zone 3 booster pump station and a temporary above-ground six-inch steel bypass to avoid service interruptions during construction.
Ciotti described difficult terrain through a canyon for the middle line section and said construction would follow the city esign and procurement plan; active construction is expected to take about 90 working days after the booster station work is complete and materials are secured. He said the project was listed in the city'020 master plan.
Council members asked about vendor vetting and the wide spread between the low and high bids. Staff and the city—onsultant said they reviewed bids line-by-line and were comfortable M&R was the lowest responsible bidder. Council also heard that the contingency was recommended to cover unknowns found when crews access a pipeline originally installed in 1901; staff said they hope not to use the contingency.
The council authorized the city manager to execute the contract and to approve change orders up to 15 percent of the construction budget ($466,500), which together with the base bid yields a possible total construction cost of $3,576,500. The motion passed 3-0.
The city said the project aims to maintain water supply, pressure and fire protection for residents north of Golden Hills while avoiding interruptions during the work.
