Tag Archive for: Water Infrastructure

Worker relines water pipeline

Water Authority Completes Pipeline 3 Relining in Mission Trails Regional Park

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San Diego County Water Authority Operations and Maintenance staff recently completed a complex relining project on a section of Pipeline 3 in central San Diego, within Mission Trails Regional Park. Pipeline 3 traverses the western portion of the region from the Riverside County border in the north to Lower Otay Reservoir in the south.

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

By relining pipes ahead of time or conducting timely repairs, the Water Authority and its member agencies avoid pipeline failures and improve the reliability of future water supplies. The proactive Pipeline 3 relining project is part of the asset management program to make preventative repairs to large-scale infrastructure.

Pipeline 3 Relining

In June 2020, O&M staff performed an inspection of Pipelines 3 and 4 within Mission Trails Park during a routine shutdown. They inspected an area of Pipeline 4 that had previously been repaired, and the repairs were found to have held up successfully. Pipeline 3 has similar characteristics to Pipeline 4 in that area, and during the shutdown, staff inspected and found a 32-foot section of pipeline that had sustained lining damage. Between August and September 2021, staff completed the complex repairs on Pipeline 3.

Operations and Maintenance teams collaborate, overcome challenges

“The project was challenging due to several geographical factors, including the distance of access structures from the damaged section and the steep grade of the hill that the section of pipeline traverses,” said David Hernandez, maintenance technician at the Water Authority. “Our asset management, facility maintenance, and mechanical maintenance teams collaborated closely to plan and execute the complex repairs.”

To begin the relining project, heavy concrete covers at access point structures were first removed to allow staff to access the pipeline. Piping and an air valve at the top and pumping well at the bottom of the hill were then removed to allow for safe access. Staff installed an atmospheric ventilation fan that moved fresh air into the pipeline. Once the piping and valves were removed, they were able to enter the pipeline.

Staff then hiked through the pipeline to perform a visual inspection and locate the damaged area. They located the broken lining section and loaded broken pieces into buckets and manually hauled the buckets to access structures. Then the metal pipeline was prepared for the application of new liner. Preparation of the pipe took several days – it involved carefully cutting out any remaining damaged liner, descaling rust from the metal, and cleaning up and wiping down the metal to prepare for new lining. O&M staff then mixed the new lining material – approximately 4,400 pounds of dry material was mixed and lifted over the course of the project. The new liner was then manually applied to the pipe, starting from the bottom half for traction and then applied up to the crown of the pipe. Finally, every inch of the new lining was carefully inspected.

Careful planning protects crews during critical repairs

The highly specialized work effort was performed in a safe and efficient manner due to careful planning and execution by the Water Authority’s O&M staff. Throughout the process, staff took multiple safety measures, including wearing personal protective equipment, having a confined space rescue team on standby, and tying hand and foot loops into a safety rope. The entire project took approximately one month. It will extend the lifetime of Pipeline 3, a crucial component to the region’s water supply.

Water Authority Kicks Off 2023 Water Facilities Master Plan Update

/in , , /by /Water News Network Quoted: San Diego County Water Authority

The San Diego County Water Authority has begun crafting its 2023 Water Facilities Master Plan Update and will advertise for professional service support in early November following an update last week to the Board of Directors. The plan, updated every 10 years, will lay out strategies to optimize Water Authority facilities to serve the region under a range of future conditions through the 2045 planning horizon.

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California Increases Salmon Spawning to Make Up for Drought

/in , , /by /NBC Bay Areaby Joe Rosato Jr.

In an effort to blunt the devastating toll California’s extended drought has taken on the state’s chinook salmon population, state and federal fish hatcheries in Northern California are spawning millions of additional salmon smolts in order to increase their odds of survival.

The state’s prolonged drought has left many of its dams and rivers unable to supply the cold water currents wild salmon require for their eggs to survive. So, hatcheries are trying to make up for nature’s dry spell with human intervention.

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Water Facilities Master Plan Update-Infrastructure-Planning 2023 rates

Water Authority Kicks Off 2023 Water Facilities Master Plan Update

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The San Diego County Water Authority has begun crafting its 2023 Water Facilities Master Plan Update and will advertise for professional service support in early November following an update last week to the Board of Directors. The plan, updated every 10 years, will lay out strategies to optimize Water Authority facilities to serve the region under a range of future conditions through the 2045 planning horizon.

The draft version of the master plan is anticipated to be completed by winter 2023, followed by Board adoption of the final plan in early 2024. The development of the master plan builds on the region’s recently approved 2020 Urban Water Management Plan, which updated water demand projections to 2045.

2023 Water Facilities Master Plan Update guides future investments

The Water Authority’s master plan guides future investments, defines strategies to identify facility needs, and focuses on system optimization to ensure the Water Authority can meet future member agency water demands in a reliable and cost-effective way.

“As we move into the next decade of regional water facilities planning, it is important the Water Authority continue to lead regional preparations for an uncertain future by improving existing infrastructure with resiliency and flexibility in the face of climate change,” said Water Authority General Manager Sandra L. Kerl. “Especially in these times of drought, we all realize the full value of water and all that goes into a sound water delivery system to sustain our region’s $253 billion economy and quality of life.”

Master plan focus includes climate change

The previous master plan update in 2013 relied on the 2010 UWMP demand projections and incorporated a new normal of reduced water sale volumes, due to a greater emphasis on local supply development, water use efficiency, and new energy management options. Going forward, the 2023 master plan update will continue to focus on facility optimization; system changes due to local supply development by member agencies (such as potable reuse projects); updated water use efficiency regulations; and climate change.

Preliminary objectives of the 2023 update include:

  • Evaluate existing facilities and plan for any future regional water facilities
  • Ensure system operational resiliency and flexibility
  • Maintain and improve supply reliability and diversity

Staff will lead the development of the master plan with support from a contractor team selected through a request for proposals that’s expected to be issued in November. Key tasks in the scope of work will include:

  • Development of performance criteria
  • Identify and evaluate planning scenarios
  • Analyze facility/project alternatives
  • Recommend and prioritize projects

In addition to the Water Facilities Master Plan, the Water Authority also regularly updates its Urban Water Management Plan, Aqueduct Operating Plan, Long-Range Financing Plan, Climate Action Plan, and several others. Those documents work together to ensure the right mix of supplies and facilities to meet the region’s needs at the right time at an affordable cost.

For more information about the Water Authority’s planning and preparedness efforts go to www.sdcwa.org/your-water/planning-preparedness.

Water Authority Kicks Off 2023 Water Facilities Master Plan Update

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November 2, 2021 – The San Diego County Water Authority has begun crafting its 2023 Water Facilities Master Plan Update and will advertise for professional service support in early November following an update last week to the Board of Directors. The plan, updated every 10 years, will lay out strategies to optimize Water Authority facilities to serve the region under a range of future conditions through the 2045 planning horizon.

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Ransomware Attacks on Drinking Water, Wastewater Utilities Are Increasing

/in , , /by /Water Onlineby Peter Chawaga

A slew of recent attacks makes it clear that critical infrastructure like drinking water and wastewater utilities are under increasing threats from cybercriminals and bad actors. And recent revelations from authorities are demonstrating that the problem may be even worse than previously known.

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EPA Finally Has an Action Plan to Improve Water Infrastructure and Sanitation for US Tribes

/in , /by /Gristby Mark Armao

Hoping to step up the federal government’s response to long-standing water issues facing Native American communities, the U.S. Environmental Protection Agency released an “action plan” earlier this month that will seek solutions to the many barriers tribes have to running water and wastewater services.

The plan will guide the EPA Office of Water as it works with federally recognized tribes to implement the plan, which was prepared with input from the National Tribal Water Council, an EPA-funded advisory group. Priorities include the creation of federal baseline water-quality standards under the Clean Water Act.

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Infrastructure Bill Seen as Way to Pay Farmers to Cut Water Use

/in , /by /Bloomberg Lawby Tripp Baltz

Four states in the drought-wracked West considering whether to pay farmers to cut their water use see federal infrastructure legislation as a possible revenue source.

The $550 billion bipartisan legislation approved in the Senate includes $25 million for the four states—Colorado, New Mexico, Utah, and Wyoming.

“There’s that bucket, and a lot of other buckets, in the federal infrastructure bill that could come into play for drought contingency planning implementation,” said Amy Ostdiek, interstate and federal manager in the Colorado Department of Natural Resources.

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Joint Project by Olivenhain MWD and City of Encinitas Reaches Final Phase

/in , , /by /Water News Network

The El Camino Real Potable Water Pipeline Replacement and Green Bike Lane Striping Project has reached its final stage. After the Olivenhain Municipal Water District Board approved filing of a notice of completion for the pipeline portion of the project, the City of Encinitas will finish restoring the street and complete new bike lane striping. The original pipelines were installed in 1961 and 1974 and fast approaching the end of their lifespan.

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Water infrastructure-Olivenhain Municipal Water District-Base paving along El Camino Real across from Camino Encinitas Plaza, just north of Via Montoro. Photo: OMWD joint project by Olivenhainv

Joint Project By Olivenhain MWD and City of Encinitas Reaches Final Phase

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The El Camino Real Potable Water Pipeline Replacement and Green Bike Lane Striping Project has reached its final stage. After the Olivenhain Municipal Water District Board approved filing of a notice of completion for the pipeline portion of the project, the City of Encinitas will finish restoring the street and complete new bike lane striping.

The original pipelines were installed in 1961 and 1974 and fast approaching the end of their lifespan. OMWD replaced 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 were also replaced.

The pipeline replacement will reduce water loss and prevent emergency shutdowns due to leaks. This is vitally important for water conservation and to ensure water supply reliability for businesses and residents, more important than ever due to drought conditions in the region.

“Proactive maintenance is a big part of what we do,” said Olivenhain Municipal Water District Board President Larry Watt. “Replacing aging infrastructure before it breaks helps to avoid emergencies, which are more costly and more impactful to customers.”

Coordination minimizes community inconvenience

Lowering a section of the new potable water pipe into a trench in El Camino Real joint project by OlivenhainLowering a section of the new potable water pipe into a trench in El Camino Real joint project by Olivenhain

Lowering a section of the new potable water pipe into a trench in El Camino Real. Night work helped minimize the inconvenience to nearby businesses and homes. Photo: Olivenhain Municipal Water District

To mitigate the impact to the surrounding community, OMWD coordinated with the City of Encinitas on its green bike lane project along the same route. The District implemented the lane restriping portion of the project on behalf of the City of Encinitas concurrently with the pipeline replacement project as an efficiency measure.

As a result, the two agencies combined what would normally be two separate, unrelated infrastructure improvement projects into a single effort to improve operational efficiency and reduce the temporary inconvenience of disruptions to area residents and businesses.

The bike lane will provide traffic calming measures, including improvements to safety and mobility for bicyclists along North El Camino Real from Encinitas Boulevard to Leucadia Boulevard by restriping and narrowing travel lanes. In addition, green-colored striping will augment some areas on the bike lanes and new signage and pavement markings will be installed.

“It was very important to us from the outset of the project to mitigate its impacts to the community, while also keeping costs down,” said Watt. “To that end, the partnership with the City of Encinitas was critical. They coordinated closely with us every step of the way.”

At the start of the project, the City of Encinitas requested that work be done at night to further reduce traffic impacts. Capitalizing on the reduced traffic as a result of the statewide stay-at-home order, OMWD was able to shift construction to the daytime for a portion of the project. Working during the day is more efficient and safer than night work, and minimized noise impacts to the surrounding neighbors. However, as traffic returned to normal levels, the City shifted work hours back to overnight.

New bike lanes due by December

Dedicated green bike lanes such as this example have an expected December completion date. Photo: Courtesy City of Encinitas

Dedicated green bike lanes such as this example have an expected December completion date. Photo: Courtesy City of Encinitas

The final work effort will include buffered bike lanes on the east and west, and fully restoring three lanes of traffic. Work is anticipated to occur through early December. Traffic controls will be in place during the day and at night with the most significant work occurring at night. Residents and businesses should anticipate lane closures and consider alternative transportation routes.

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

(Editor’s note: The Olivenhain Municipal Water District is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)