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Olivenhain MWD, City of Encinitas Work Together to Keep Water and Traffic Flowing

The City of Encinitas and the Olivenhain Municipal Water District are working together on a project that keeps water supply and traffic flowing.

To prevent water main breaks and ensure reliable service to its customers, Olivenhain Municipal Water District is proactive in its repair and replacement of aging water infrastructure.

Work is now underway on the El Camino Real Potable Water Pipeline Replacement and Green Bike Lane Striping Project. Construction is expected to last about one year. Photo: Olivenhain Municipal Water District Water and traffic

Olivenhain MWD, City of Encinitas Work Together to Keep Water and Traffic Flowing

The City of Encinitas and the Olivenhain Municipal Water District are working together on a project that keeps water supply and traffic flowing.

To prevent water main breaks and ensure reliable service to its customers, Olivenhain Municipal Water District is proactive in its repair and replacement of aging water infrastructure.

Year-long construction project underway

Map of the 4,700 foot long stretch of improvements planned along North El Camino Real. Map: Olivenhain Municipal Water District

Map shows the 4,700 foot long stretch of improvements planned along North El Camino Real. Graphic: Olivenhain Municipal Water District

In early April, OMWD began construction to replace aging water infrastructure along El Camino Real in Encinitas. The work marks the start of the El Camino Real Potable Water Pipeline Replacement and Green Bike Lane Striping Project. Construction is expected to last about one year.

During the project, OMWD will replace approximately 4,700 linear feet of existing 12-inch diameter potable water pipeline along North El Camino Real from Encinitas Boulevard to Garden View Road and approximately 650 linear feet of existing 12-inch diameter pipeline between Via Molena and Mountain Vista Drive. Water service lines and fire hydrant laterals served by the existing pipelines will also be replaced.

The two pipelines being replaced were originally installed in 1961 and 1974, and are approaching the end of their lifespan.

The American Society of Civil Engineers estimates that there more than 240,000 water main breaks in the United States every year. The main breaks waste over two trillion gallons of treated drinking water, but also interrupt water service to homes and businesses, and require costly and disruptive emergency repairs.

After OMWD’s pipeline work is complete, the City of Encinitas will implement traffic calming measures and improve safety and mobility for bicyclists along North El Camino Real from Encinitas Boulevard to Leucadia Boulevard by restriping and narrowing travel lanes.

The work will include adding bollards to existing bike lanes, applying green color to some areas on the bike lanes, and additional signage and pavement markings will also be installed.

OMWD will implement the lane restriping portion of the project on behalf of the City of Encinitas, which will take place concurrently with the pipeline replacement project.

Coordination minimizes impact on residents and businesses

The two agencies have combined efforts to maximize operational efficiencies and to reduce impacts to area residents and businesses.

Originally, OMWD’s project was scheduled to begin in 2021. Encinitas Council Member Joe Mosca and OMWD Board Treasurer Larry Watt identified the opportunity to streamline the two projects, maximizing efficiencies and minimizing impacts to the community. Because the City’s project had a deadline for grant funding, the two agencies ultimately decided it would be more efficient to advance the timeline of OMWD’s project.

“El Camino Real is a major thoroughfare and any work done there needs to be executed with maximum care and efficiency in mind to keep impacts to businesses and residents low,” said Larry Watt, OMWD board treasurer. “By coordinating the pipeline replacement project with the City’s project, the community can enjoy a continued safe and reliable water supply and improved road safety with the least disturbance possible.”

Environmental responsibility and safety

“The City of Encinitas is continuing its track record of environmental responsibility by making our streets safer for bicyclists and pedestrians through the Active Transportation Enhancing Project,” said Encinitas Councilmember Joe Mosca. “The City’s partnership with OMWD on this project highlights the benefits of collaboration between neighboring public agencies on critical infrastructure projects.”

Coronavirus pandemic helps minimize impact on traffic management

Instead of conducting two projects along the same stretch of road consecutively, the City of Encinitas and Olivenhain Municipal Water District are coordinating their work to minimize disruption to the community. Photo: Olivenhain Municipal Water District

Instead of conducting two projects along the same stretch of road consecutively, the City of Encinitas and Olivenhain Municipal Water District are coordinating their work to minimize disruption to the community. Photo: Olivenhain Municipal Water District

In addition to the partnership, OMWD has taken steps to minimize the impact of the project on residents and businesses along North El Camino Real. A City-approved traffic management plan will be implemented during construction. All work was originally scheduled to be completed at night to minimize traffic impacts.

As a result of the reduced traffic from the statewide stay-at-home order, the agencies adapted hours in April to 7:30 a.m. to 6 p.m., Monday through Friday. The change allows work to be completed more efficiently and safely.

Olivenhain will work closely with the City to monitor the project’s impact on traffic on a week-by-week basis and modify the schedule as needed along with project contractor Teichert Energy and Utilities Group while still maintaining efficient operations.

OMWD anticipates a single shutdown of water service for most businesses/residences, kept as short as possible. Project updates are posted on its website. Email questions to or call 760-632-4235.

For questions specific to the City of Encinitas Active Transportation Enhancing Project, email or call 760-943-2211.

New Inspection Tool Aids Vallecitos Pipeline Assessments

A new pipeline inspection tool being used by contractors working for the Vallecitos Water District to determine pipeline integrity could become a standard tool saving time and money.

After nearly completing construction in 2008, developers walked away from the 500-acre High Point subdivision in the City of Escondido. Water facilities installed for the subdivision were left unused for ten years.

Water Authority staff inspect leak in Pipeline 4

Pipeline 4 Repairs Underway in North San Diego County

A recently discovered leak in a section of a pipeline in North County will be repaired in coming months while Pipeline 4 returns to service.

Crews have installed bulkheads in the pipeline to isolate a portion of Pipeline 4 for repairs. This will allow the pipeline to continue treated water deliveries throughout the county in a modified fashion starting the week of Sept. 16 and restores full service to retail water agencies. With the leaky section isolated, crews will make necessary repairs.

Four Water Authority member agencies – Fallbrook PUD, Rainbow MWD, Valley Center MWD, and Vallecitos Water District – have taken steps to manage water supplies while the pipeline was shut down to install the bulkheads.

Carbon fiber section will protect pipe

In August, Water Authority crews detected a leak in the 90-inch diameter Pipeline 4, one of five major pipelines the agency operates. The leaky section is near Camino Del Rey in Bonsall, in an area with no adjacent homes or business.

To find the cause of the leak, the Water Authority dewatered the pipe starting Sept. 9. Preliminary results of the investigation are that a weld seam, connecting a steel pipe section to a pre-stressed concrete cylinder pipe, separated in an area of very high water pressure.

The Water Authority is preparing to install a carbon fiber liner to give the pipeline several more years of service while a longer-term solution is developed and deployed.

After repairs are completed, a second 10-day shutdown of Pipeline 4 will be needed to remove the bulkheads and return the pipeline to full, normal operations.

Proactive approach keeps pipelines healthy

As part of its proactive approach to asset management, the Water Authority continually assesses and rehabilitates pipelines serving the San Diego region. The agency operates 310 miles of large-diameter pipelines, along with 1,600 aqueduct-related structures, and approximately 100 metering/flow-control facilities.

Approximately 82 miles of the pipelines are pre-stressed concrete cylinder pipes. These types of pipes were installed between the early 1960s and late 1980s, and have experienced premature failures and shown areas of degradation.

By relining the pipes or conducting timely repairs with the latest technology, the Water Authority has avoided major pipeline failures for more than decade.

 

Pipeline relining is an efficient technique that extends the lifespan of pipes while minimizing costs and impacts to nearby communities. Photo: Water Authority

Innovative Pipeline 5 Relining Completed

San Diego County Water Authority crews completed relining a segment of Pipeline 5 in Fallbrook and San Marcos in late July, reaching a milestone in a strategic, multi-decade pipeline relining program. The 2.3-mile segment of Pipeline 5 was relined with new steel liners that are planned to last for more than 75 years.

The proactive pipeline relining program is a crucial part of asset management efforts that improve the reliability of San Diego County’s water supplies.

30-year pipeline relining program

Since the relining program began in 1991, nearly 47 miles of pre-stressed concrete cylinder pipe have been rehabilitated. This constitutes more than half of the total PCCP in the Water Authority system. The remaining 35 miles are expected to be rehabilitated by 2027.

The Pipeline 5 project was conducted in eight segments to minimize impacts to the nearby communities of Fallbrook and San Marcos.

Proactive measures to protect infrastructure

Pipeline relining is an efficient technique used on long stretches of pipelines. It involves inserting new steel liners into the existing pipes. The new liners can extend the lifespan of the pipe by several decades.

“Relining our existing pipes is quicker and more cost-effective than excavating, removing and replacing an entire pipeline,” said Gary Olvera, senior construction manager at the Water Authority. “In partnership with our member agencies, the Water Authority has developed an efficient and proactive plan to ensure continued water supply reliability for the entire region.”

New steel liners can extend the lifespan of a pipe by several decades. Photo: Water Authority

New steel liners can extend the lifespan of a pipe by several decades. Photo: Water Authority

Innovative technique to minimize impacts

To access Pipeline 5, crews excavated dirt to create eight 25-foot by 60-foot access portals spaced roughly 525 to 2,500 feet apart. During construction, crews eliminated two of the originally planned portals, helping save more than $217,000. Most of the work was then performed underground, inside the pipe.

Once the new liner was installed, the joints were welded together. Then, each new steel liner was coated with a cement mortar lining. Finally, the portals were backfilled, the pipeline was disinfected, and the pipe was put back into service.

A welder works inside the pipe to connect the new joints. Photo: Water Authority

A welder works inside the pipe to connect the new joints. Photo: Water Authority

Maintaining regional water supply reliability

Large-diameter pipelines operated by the Water Authority and its 24 member agencies extend approximately 310 miles to convey water throughout San Diego County.

Approximately 82 miles of the pipelines are pre-stressed concrete cylinder pipes. These types of pipes were installed between the early 1960s and late 1980s and some are nearing the end of their service life.

By relining the pipes ahead of time or conducting timely repairs with the latest technology, the Water Authority and its member agencies avoid pipeline failures and improve the reliability of future water supplies.

Ventura Readies The Spigot For State Water

Ventura started paying for its right to state water in 1971. On Monday night, policymakers took the biggest step yet to being able to access it. The Ventura City Council voted 6-0 to approve a study certifying no major environmental impacts would result from building the 7-mile pipeline near Camarillo. The action means the city’s next move is hiring a consultant to draft the interconnection’s final design. The state-mandated Environmental Impact Report flagged six areas of concern. “All issues are temporary, related to construction,” Meredith Clement, a water consultant to the city, told the council.

Proactive Partnerships Keep Pipelines In Top Shape

This summer, the Water Authority is partnering with three technology companies to test the condition of the agency’s oldest pipelines forming the First Aqueduct in Valley Center. Technology providers test their new and improved tools on Water Authority and member agency pipes. The tools are then used to assess the condition of those same pipes. This efficient strategy ensures maximum condition assessment accuracy. The strategy also allows for technology to keep up with what water agencies need and minimizes costs. Targeted repairs and maintenance activities maximize the life expectancy of some of the region’s most critical infrastructure.

Court Throws Out Federal Approval Of Cadiz Water Pipeline

A federal judge has struck down Trump administration decisions that cleared the way for Cadiz Inc. to build a water pipeline across public land in the California desert. The ruling is a blow to the company’s decades-long effort to pump groundwater from beneath its desert property 200 miles east of Los Angeles and sell it to urban Southern California. Cadiz wants to use an existing railroad right of way across federal land to pipe supplies from its proposed well field to the Colorado River Aqueduct. In 2015, during the Obama administration, the U.S. Bureau of Land Management said Cadiz couldn’t use the right of way and would therefore have to obtain federal permission to run the proposed pipeline across surrounding federal land.

Feds Can’t Duck Claims Of Shoddy Review For Desert Water Pipeline

A federal judge indicated Thursday he will advance conservation groups’ claims that a proposed 43-mile groundwater pipeline in a Southern California desert was approved abruptly and without proper environmental review by a federal agency. The Cadiz groundwater pipeline project would move nearly 45 million gallons of water daily for 50 years from an underground aquifer in the Mojave Desert and to cities across Southern California. The Center for Biological Diversity and Center for Food Safety accuse Cadiz of trying to evade federal laws protecting the fragile desert by planning to build its pipeline along a railroad track that was established under the General Railroad Right-of-Way Act of 1875.

IID Board Hears Plans To Pipe QSA Water Directly To San Diego

After false starts and real stops, the San Diego County Water Authority is once again trying to make inroads into taking their QSA transferred water directly from the Imperial Valley, bypassing its current deliverer, the Metropolitan Water District. Dan Denham, assistant general manager of the SDCWA, proposed several pipeline scenarios for QSA-conserved water at the meeting of the Imperial Irrigation District Tuesday, June 18. Denham proposed several pipeline routes, two southern and one northern from various points in the Valley to San Diego County.