Utilities responding to the challenges of COVID-19 have adapted practices developed for past emergency situations, but physical distancing requirements of the pandemic response in some instances have forced entirely new ways of approaching safety measures.
Consolidated Edison has been utilizing two sets of command and support staff in separate locations, as more than 350 of its employees have tested positive for COVID-19 and eight have died. In the future, more will be done in advance to determine which employees are essential and to ensure remote-work capabilities, according to Anthony Natale, a member of ConEd’s emergency preparedness team.
For municipal utilities, grid operations have become tightly enmeshed with other critical services like police, fire and health providers, according to Lincoln Bleveans, assistant general manager for power supply at Burbank Water & Power.
Seventeen above ground steel tanks and two underground concrete reservoirs play a vital role in the Vallecitos Water District’s mission to provide clean, safe, and reliable water to its 105,000 district residents. Maintenance and cleaning of the tanks and reservoirs is a critically important process.
Without regular washouts, tanks can accumulate large amounts of sediment, prohibiting proper inspections.
California State Water Resources Control Board Division of Drinking Water standards require that tanks must be cleaned every three years.
Vallecitos Water Operations’ team cleans up to six tanks annually. Regulations call for the district’s six certified water operators to empty and enter the tanks for inspection to ensure there is no structural damage or other concerns prior to the tank washout to ensure continued operation of the water distribution system. Vallecitos adheres to a strict inspection schedule as part of its preventative maintenance program.
“We want customers to know we’re being diligent protecting the water infrastructure,” said Richie Arballo, senior water systems operator. “If we find an issue where a tank needs to be refurbished, we want to correct it as soon as possible, before it becomes an emergency.”
Coordinating tank cleaning a complex operation
The drained interior of a Vallecitos Water District tank during the cleaning and inspection process. Photo: Vallecitos Water District
Vallecitos staff schedules tank cleaning during winter months when water demand decreases. Initial steps include how to best reroute water delivery while tanks are taken out of service for cleaning. After the tank is drained, water operations staff enter the tank for a thorough inspection, followed by cleaning and disinfection.
When the process is complete, staff refills the tank near its spill level and allows the water to stand for 24 hours before conducting water quality analysis. Once lab results are reported and submitted to the state’s Division of Drinking Water, it will determine when the tank can be placed back in service.
Tank cleaning began in March but was put on hold due recent rains and the coronavirus pandemic, with the the need for physical distancing. See the cleaning process depicted in this video.
Safety and environmental stewardship
During draining, water is discharged to a storm drain or dirt area where it is absorbed back into the ground naturally. Once the tank is removed from service, it is isolated from the water distribution system. Valves are secured and double-checked to be sure they are completely closed. Staff members wear respiratory protection due to chemicals used during the disinfection of the tank interior.
Cleaning and disinfecting the large reservoirs requires teamwork. The Water Operations team calls on staff from the Vallecitos Water District Collections and Construction departments to augment and support its personnel.
Vallecitos Water District employee Joey Shore cleans of the district’s 17 steel tanks. Photo: Vallecitos Water District
“When we all work together it really shows how much of a team we are here at the District,” said Shawn Askine, water systems supervisor. “We are very fortunate at Vallecitos to have employees willing to come out and help us clean the tanks properly and effectively, so we are utilizing customer dollars as efficiently as possible.”
Due to the amount of equipment and coordination required, the Vallecitos Water District created a customized trailer specifically for conducting tank cleaning. The small investment allows all required equipment to be stored on the trailer, ready to go on the day of the scheduled cleaning. The trailer and equipment significantly streamline the process and ensures all parts, fittings, and washout equipment are available to get the job done effectively.
https://www.waternewsnetwork.com/wp-content/uploads/2020/03/VWD-Tank-Cleaning-Wall-Worker-845X450.jpg450845Gayle Falkenthalhttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngGayle Falkenthal2020-04-22 14:40:452020-04-22 14:58:33Tank Cleaning Program Helps Vallecitos Water District Maintain Safe Water Supply
Several streets in neighborhoods near San Diego State will be torn up for short periods over the next four years so the city can widen and upgrade sewer and water lines that lead to the Point Loma Wastewater Treatment Plant.
https://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.png00Kimberlyn Velasquezhttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngKimberlyn Velasquez2020-04-22 10:32:502020-04-28 11:07:33San Diego Plans to Spend $70M Upgrading Sewer, Water Pipes Near San Diego State
California’s largest water suppliers will have to report their monthly use and conservation efforts under a measure approved Tuesday by state regulators.
https://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.png00Kimberlyn Velasquezhttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngKimberlyn Velasquez2020-04-22 10:31:162020-04-28 11:07:40California’s Largest Water Suppliers Must Report Usage
California wants a federal judge to stop how the Trump administration is managing water supplies in the Golden State, saying protected species like trout and Delta smelt risk imminent and irreparable harm.
https://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.png00Kimberlyn Velasquezhttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngKimberlyn Velasquez2020-04-22 10:29:422020-04-28 11:07:47California Sues to Stop Federal Water Actions
A ridge of high pressure off the coast will spread over California, bringing the first heat wave of 2020, the National Weather Service said. High temperatures of 85 to 95 will be common, with the hottest readings on Friday and Saturday.
https://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.png00Kimberlyn Velasquezhttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngKimberlyn Velasquez2020-04-22 10:29:082020-04-27 15:01:22First Heat Wave of 2020 Will Arrive in Southern California This Week
There is a 75 percent chance 2020 will set a record for the warmest year since instrument records began in 1880, the National Oceanic and Atmospheric Administration is projecting, beating out 2016 for the distinction.
This is somewhat unexpected, since there is no declared El Niño event in the tropical Pacific Ocean, which tends to provide a natural boost to global temperatures that are already elevated due to the human-caused buildup of greenhouse gases in the atmosphere.
The NOAA projection, made late last week, is based on statistical modeling now that the first quarter of 2020 is off to a near-record warm start, coming in as the second-warmest January through March period since instrument records began in 1880.
https://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.png00Mike Leehttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngMike Lee2020-04-22 10:28:542020-04-27 15:01:39This Year is on Track to be Earth’s Warmest on Record, Beating 2016, NOAA says
As our leaders in Washington look to create a jobs program focused on national infrastructure investments to sustain the U.S. economy, their decisions will significantly impact our economic future, including the industries that will — and will not — receive a lifeline through federal stimulus dollars.
https://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.png00Kimberlyn Velasquezhttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngKimberlyn Velasquez2020-04-22 10:26:242020-04-22 10:26:24Bold Investments in Clean Energy and Transportation Infrastructure Will Help Lead Us Out of a Recession
Thanks to the pandemic, there won’t be big rallies or festivals to mark the 50th anniversary of Earth Day in San Diego or anywhere else. But the day will not go unremembered.
https://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.png00Kimberlyn Velasquezhttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngKimberlyn Velasquez2020-04-22 10:25:042020-04-23 10:03:27As Earth Day Turns 50, Organizers Recall Successes That Followed The First
The Cuyamaca Outdoor School began offering its programs and learning content virtually Tuesday, as schools remain closed amid stay-at-home orders due to the COVID-19 pandemic.
https://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.png00Kimberlyn Velasquezhttps://www.waternewsnetwork.com/wp-content/uploads/2018/02/water-news-network.pngKimberlyn Velasquez2020-04-22 10:24:072020-04-27 15:01:29Cuyamaca Outdoor School Launches Home Science, Nature Learning Program