Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)

More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021. 

The first series of incidents was likely caused by the release of mercury while crews were cleaning up and removing equipment at the Alpha-4 Building on the west side of Y-12, according to scientists and officials. Alpha-4 is the most contaminated of the four major mercury-contaminated buildings at Y-12. Millions of pounds of mercury were used at Y-12 decades ago to produce nuclear weapons parts. Removing mercury-contaminated buildings, equipment, and soil remains one of the top challenges of cleaning up the Oak Ridge Reservation.

Upper East Fork Poplar Creek is pictured above at the Y-12 National Security Complex in Oak Ridge on Friday, May 22, 2020. (Photo by John Huotari/Oak Ridge Today)

 

More than 4,000 fish and crayfish were killed by chlorinated water and mercury at the Y-12 National Security Complex in two series of incidents in 2018 and 2021.

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Oak Ridge Public Works director dies after short illness

Shira McWaters

Oak Ridge Public Works Director Shira McWaters died Saturday after a short illness, the city said. She was 60.

“Today we have lost a colleague and a friend,” Oak Ridge City Manager Mark Watson said. “Our hearts are with Shira’s husband, children, and family as we share some small measure of their grief at the loss of this vibrant woman.”

McWaters, a civil engineer who had been working for a company in Arizona, was hired by the City of Oak Ridge as public works director in 2016. She started in March that year. She replaced former Public Works Director Gary Cinder, who retired in September 2015. The Public Works Department is responsible for much of the city’s essential infrastructure, from streets to drainage to water and wastewater. The department also maintains city-owned buildings and city vehicles and equipment.

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Sewer testing finds significant increase in COVID particles in east plant

A chart by the Oak Ridge Public Works Department shows the results of testing wastewater for COVID-19. The particles per liter have increased significantly in the east plant during the past week, putting it in the red zone for uncontrolled transmission. The east plant is the area generally east of New York Avenue and north of Oak Ridge Turnpike. (Image courtesy City of Oak Ridge)

The most recent testing for evidence of COVID-19 in the city’s sewer system documented a significant increase in particles per liter in the east plant, putting that area in a red zone for uncontrolled transmission.

The east plant is the area generally east of New York Avenue and north of Oak Ridge Turnpike.

In the last test, the east plant was up to 2.4 million positive genetic particles per liter. That was an increase of almost 35 times from the prior weekly test result of 69,000 positive genetic particles per liter, according to information provided by Oak Ridge Public Works Director Shira McWaters at a City Council work session on Tuesday evening.

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