The city of Napa hopes to get to the root of some pavement problems in Browns Valley by making drainage improvements.
The Napa City Council unanimously awarded a construction contract Tuesday for drainage improvements on White Cliff Circle, Meadowbrook Drive, Twin Oaks Drive and Quail Court. Santa Rosa-based Coastside Concrete provided the lowest and best bid for the project that is intended to improve drainage, protecting pavement failure, city officials said.
Excessive groundwater in Browns Valley west of Buhman Avenue is thought to be the cause of early pavement deterioration, a staff report said. Additionally, there is constant ponding in the roadway and gutter, generating a number of complaints from residents.
Coastside Concrete will install about 1,400 feet of drainage pipe about 3 feet below ground in a six-inch wide trench, according to the city. The pipe will connect with an existing drain inlet.
In May or June, the city plans to resurface the streets in this area as part of its 10-miles-a-year paving program, the city said. The drainage work will be complete before paving is done.
The city received 12 bids for the work, ranging from a high of $145,560 to Coastside Concrete’s low of $72,576. The city gave the second-lowest bidder and local company G.D. Nielson Construction a 3 percent reduction in price but Coastside still had the lowest bid, according to the city.
The total project budget is $96,460, which includes a contingency amount and contract administration and construction management, the staff report said. The money is coming from the city’s Storm Water System Service Fee Fund.