Also serving the communities of De Luz, Rainbow, Camp Pendleton, Pala and Pauma

Rainbow gives green light for Q-3 water line

The Rainbow Municipal Water District (RMWD) board of directors gave the green light to begin the replacement of the Q-3 water line.

According to district engineer Brian Lee, RMWD is in the process of reestablishing its drinking water deliveries across the San Luis Rey River at Ramona Drive.

“An existing 22-inch pipeline failed this past winter,” explained Lee. “The failed pipeline is responsible for about 40 percent of water deliveries across the San Luis Rey River during peak summer demand.”

With aid from J.C. Heden and Associates, the district has begun to design a ‘slip-line’ of the failed pipe and installing two pipelines through Horizontal Directional Drilling (HDD).

“Slip lining the existing pipe greatly reduces its capacity, which is why the other two pipes are needed,” explained Lee.

At their recent meeting, the Rainbow district board of directors elected to allow for the purchase of the material for both lines.

According to RMWD General Manager Dave Seymour, the pipeline material will arrive within eight weeks. Currently, the district is working to finalize specifications on the project, and draft a construction contract.

“Our construction activities will not be occurring in any sensitive habitat,” said Lee. “However, we will be adjacent to sensitive habitat. Therefore, we are conducting sound studies and preparing sound barriers to ensure that our work does not upset any wildlife.”

Lee stated the Rainbow water district is working with four environmental agencies to protect the San Luis Rey River: the California Department of Fish and Game, Army Corps of Civil Engineers, Regional Water Quality Control Board, and Federal Fish and Wildlife.

“The two agencies taking a lead role in this project are Fish & Game and Army Corps,” said Lee.

If the district is successful in slip-lining the existing 22-inch pipeline and installs the remaining two pipelines using HDD, then the entire project is estimated to cost $3,560,000. According to Seymour, the money for the project will be borrowed from the district’s construction fund.

The district is aiming to finish construction on the line in early August, with the two other lines to be completed in September.

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