Vallecitos Water District was among 16 California water agencies honored by the Association of California Water Agencies Joint Powers Insurance Authority with the H.R. LaBounty Safety Award.
Vallecitos won its award for its Confined Space Rescue Training coordinated with several regional fire agencies in November 2019.
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Vallecitos Water District was among 16 California water agencies honored by the Association of California Water Agencies Joint Powers Insurance Authority with the H.R. LaBounty Safety Award.
Vallecitos won its award for its Confined Space Rescue Training coordinated with several regional fire agencies in November 2019.
Vallecitos Water District wanted to heighten safety awareness and improve procedures in its confined space entry and rescue during real-world situations. It took on a high level of coordination to bring in fire department personnel to conduct 12 days of joint training.
Firefighters are briefed on scene at the Meadowlark Reclamation Facility as part of confined space training drills conducted with the Vallecitos Water District. Photo: Vallecitos Water District
As a result of training, personnel were able to reduce potential hazards conducting entry into confined spaces, perform personnel rescues, and better manage hazardous materials present (gaseous chlorine).
“Because of our program, Vallecitos Water District and fire department personnel were able to increase interoperability and familiarity of each others’ technical rescue equipment,” said Trisha Woolslayer, risk management supervisor.
Safety award promotes safe water workplace practices
Wastewater Treatment Plant Supervisor Dawn McDougle, Senior Wastewater Treatment Plant Operator Matt Wiese, Wastewater Treatment Plant Operators II Chris Deering, Ivan Murguia, Arturo Sanchez, and Marc Smith, Safety Technician Anette Longville, and Public Information Officer Alicia Yerman were recognized for their roles in organizing and conducting the training. All 13 members of the Vallecitos Water District Wastewater Collection System Crew participated in the training.
Fire department crews participating were from the cities of Carlsbad, San Marcos, Del Mar, Vista, Escondido, Oceanside, Encinitas, Solana Beach, Rancho Santa Fe, Valley Center, and crews from North County Fire (Fallbrook), San Pasqual, Rincon, and Camp Pendleton.
The H.R. LaBounty Safety Award Program is designed for all JPIA members as a way to promote safe workplace behavior and operations practices while rewarding those employees who demonstrate safe behavior, take part in recognizable proactive activities, or participate in risk-reducing actions. It gives members another way to foster a safety culture that reduces the potential for losses.
The Ramona Municipal Water District and the Sweetwater Authority were also recognized among state water agencies for their safety initiatives.
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In its efforts to maintain its critical infrastructure, the Vallecitos Water District undertook a challenging update to a wastewater system pipeline constrained by its precarious location.
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In its efforts to maintain its critical infrastructure, the Vallecitos Water District undertook a challenging update to a wastewater system pipeline constrained by its precarious location.
The existing eight-inch gravity sewer pipeline conveys wastewater from the intersection of Rock Springs Road and Bennett Avenue west through a greenbelt area to an existing 12-inch pipeline in Rock Springs Road at Lancer Park Avenue. To expand capacity for current and future growth, it was replaced with a new 15-inch PVC pipe west of Matthew Lane and a 12-inch PVC pipe north and east of Matthew Lane.
See video following the progress of this vital infrastructure project
Complications due to environmental and neighborhood protection
The location of the affected manhole put equipment and crews close to a SDG&E gas line inside a greenbelt park area. Photo: Vallecitos Water District
The District always prefers to perform work in a street or public right-of-way. Neither were possible for this project due to its greenbelt and park location within feet of residential homes.
“We took every environmental precaution prior to construction,” said Lito Santos, Vallecitos Water District Project Engineer. “We performed a nesting survey, a raptor survey, and we also worked to tunnel under the bridge,” within the Environmental Protection Agency’s “Clear Water Rule.”
San Marcos Woods Homeowners Association board member Ross Fisher acted as a liaison between homeowners and the HOA with the District. Fisher expressed concern about access to the work area by the District’s large combination truck. The original proposal to create a concrete strip to drive over wasn’t feasible.
Due to its incredible strength, the grass-crete and existing lawns can handle the weight of a large service vehicle driving on it without significant damage. Photo: Vallecitos Water District
Working together with Vallecitos Water District engineers, the group chose an alternative material called “grass-crete.” Grass-crete is a green porous paving solution that comes in easy-to-install rolls. It’s flexible, lightweight, durable and provides design versatility to the project. Due to its incredible strength, the grass-crete and existing lawns can handle the weight of a large service vehicle driving on it without significant damage.
Proximity to additional threats
Manholes were waterproofed, coated, and sealed as an additional precaution and to extend their longevity. Photo: Vallecitos Water District
Vallecitos Water District engineers also worked with San Diego Gas & Electric to perform its work with enough safety clearance from a 16-inch transmission main artery gas line pressurized at 800 pounds per square inch. The District secured permission to dig within two to three feet from the line instead of the standard five feet.
The work area is also prone to flooding after large rain events, raising the water levels in the nearby creek high enough to infiltrate and inflow into the manholes. The District moved the manholes clear of the creek embankment, and lifted the manholes two feet above ground and clear of the flood plain to prevent runoff intrusion. Manholes were waterproofed, coated, and sealed as an additional precaution and to extend their longevity.
Homeowners praise Vallecitos cooperation with community
The District moved the manholes clear of the creek embankment, and lifted the manholes two feet above ground and clear of the flood plain to prevent runoff intrusion. Photo: Vallecitos Water District
“Overall Vallecitos left the greenbelt area as good or better when they started,” said Fisher of the HOA. “On a scale of one to ten, I have to give them a 9.5 or a ten. Working with the inspectors and Lito Santos the engineer, everything we asked for was done in a timely manner.”
“The project was a huge success,” said Santos. “Working with the Vallecitos Engineering Team, the Inspection Team and Mr. Fischer, it was not just a Vallecitos highlight but a career highlight.”
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Encinitas, Calif. — Olivenhain Municipal Water District and Vallecitos Water District have entered into an agreement that will allow for cooperative use of Vallecitos’ Double Peak Reservoir site in San Marcos. The arrangement is expected to save OMWD ratepayers over $100,000.
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Panelists from several water districts will give updates on new laws affecting water consumption in California during an American Liberty Forum of Ramona event set for Saturday, June 27.
The free forum on Water Regulations Today and Tomorrow will be held at Ramona Mainstage, 626 Main St. Doors open at 11 a.m. and a video program starts at 11:30 a.m.
The focus will be on Senate Bill 606 and Assembly Bill 1668.
SB 606 is in response to mandates that California achieve a 20 percent reduction in urban per capita water use by Dec. 31, 2020. Existing law requires each urban retail water supplier to develop urban water use targets and an interim urban water use target.
AB 1668 would require the state Water Resources Control Board to adopt long-term standards for the efficient use of water and would establish specified standards for per capita daily indoor residential water use.
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Vallecitos Water District crews sprang into action to repair and rehabilitate a manhole in danger of failing, successfully preventing a spill, which could have resulted in significant environmental damage.
Located just off Palomar Airport Road in a shared 30-foot easement with the Buena Sanitation District in Carlsbad, the manhole is part of a 30-inch outfall providing a main sewage drain for the City of San Marcos. The line feeds directly into the Encinas Wastewater Treatment plant a half-mile from the project site.
Vallecitos Water District crews sprang into action to repair and rehabilitate a manhole in danger of failing, successfully preventing a spill, which could have resulted in significant environmental damage.
Located just off Palomar Airport Road in a shared 30-foot easement with the Buena Sanitation District in Carlsbad, the manhole is part of a 30-inch outfall providing a main sewage drain for the City of San Marcos. The line feeds directly into the Encina Wastewater Treatment plant a half-mile from the project site.
Originally constructed in the 1980s, turbulence generated by a hard right-turn along the sewer easement creates hydrogen sulfide gases. These gases corrode concrete and weakened the manhole over the years. Flooding also occurs in the area and allows rainfall to infiltrate the manhole.
Preventing harm to sensitive habitat areas
Vallecitos Water District staff became concerned the structure could fail. The result would be a major sewage spill affecting the nearby Encinas Creek Habitat Conservation Area, ultimately spilling into the Pacific Ocean a mile downstream. The Habitat Conservation Area is owned by the Center for Natural Lands Management, which supports its management through an endowment.
The Encinas Creek HCA is also part of the City of Carlsbad’s habitat management preserve. It includes riparian habitat and is known to be home to state and federally protected species. The Center for Natural Lands Management works to protect the property from trespassing, nonnative invasive plant and animal species, and other issues.
The District determined emergency repairs were required. Although the Vallecitos Water District has proper easement rights to access, operate, and maintain the pipeline, the agency must avoid any impact to the existing habitat while repairing the manhole. This required some creativity by the work crews.
Creative thinking provides access for repairs
A look at the newly repaired manhole. Photo: Vallecitos Water District
The District kept all construction activities within its existing easement to avoid any impacts to existing riparian vegetation. Crews constructed a temporary bridge over an existing stream obstructing access to the manhole. The bridge installation was designed to be temporary, and not affect the existing stream with footings or other supports. Constructing the bridge for access turned out to be the most complex part of the repair project.
District crews working with a contractor team took advantage of the lower sewage flow during the early morning hours, starting work at 3 a.m. to get as low into the waterline as possible. Repairs like this take advantage of the low flows to keep critically important sewer systems in operation.
Instead of replacing the manhole, the District used a polymer concrete replacement product to build a new manhole within the old manhole. As a result, no excavation was needed. Unlike regular concrete, the new material is corrosion-proof and should provide District customers in San Marcos with many years of reliable service while protecting the environment.
https://www.waternewsnetwork.com/wp-content/uploads/2020/06/Vallecitos-Manhole-Bridge-845X450.jpg450845Gayle Falkenthalhttps://www.waternewsnetwork.com/wp-content/uploads/2024/04/WNN-Horizontal-White-Blue2.pngGayle Falkenthal2020-06-18 09:28:532020-06-18 18:20:25Vallecitos Water District Crews Rehab Manhole, Protecting Environment
Vallecitos Water District provides 5.25 million gallons of recycled water for irrigation every day. To fulfill the demands of modern irrigation systems, it is important to maintain low TSS levels. This is a challenge during the warm months in California, as algae that occur with raising temperatures, increase the level of TSS and clog the filters that are meant to remove TSS before the distribution of water to the irrigation systems.
Vallecitos Water District is known for its’ sustainable and innovative focus when it comes to water and wastewater treatment.
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This feature highlights water utility employees in the San Diego region working during the coronavirus pandemic to ensure a safe, reliable and plentiful water supply. The water industry is among the sectors that are classified as essential. Dale Austin, Vallecitos Water District Senior Pump & Motor Tech, is the Water Utility Hero of the Week.
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