A sign outside Burlington High School's Institute Road campus
Vermont Department of Environmental Conservation officials are asking state legislators for a two-year extension on the deadline to test schools for airborne PCBs. They say the extra time will allow them to better support schools that detect contamination from the toxic chemicals, also known as polychlorinated biphenyls .
State officials have prepared for statewide PCB testing by surveying schools to see which ones qualify and contracting with six environmental consulting firms to conduct the work. They've also released updated guidance that details what schools must do if certain levels of contaminants are found.
But in a meeting of the Senate Education Committee last week, DEC Commissioner Peter Walke and senior environmental program manager Patricia Coppolino told lawmakers that the 2024 deadline won't allow them to provide a personalized response to schools with elevated airborne PCB concentrations.
"I think we set ourselves up for an inability to provide that level of service that Vermonters are going to want in response to the discovery of PCBs in school if we try to rush the testing process," Walke told lawmakers.
Of Vermont's approximately 450 schools, at least 318 qualify for PCB testing because they were constructed or renovated in the days when the chemicals were used in building materials like window caulk, lighting ballasts and tile adhesive. Seventy more schools have yet to respond to the state's survey that determines their eligibility, Coppolino said.
Tests will cost between $15,000 and $20,000 for each school, Walke said. The full testing process — from figuring out what rooms need to be tested to getting the results back to the community — will take six to eight weeks.
In an interview on Tuesday, Coppolino elaborated on her desire to have the deadline pushed.
"It's a lot of schools, and it's technical information, and I want to make sure that staff can have the opportunity to review everything carefully [and] provide considerate responses and assistance to the schools," Coppolino said. "Just sampling the schools is easy, but it doesn't take into account what happens if indoor air issues are identified in a school."
Coppolino said testing will likely begin between April and June of this year.
In the committee last week, Sen. Brian Campion (D-Bennington) questioned Walke and Coppolino about whether it was wise to draw out the testing process, given that it could potentially mean that students were exposed to harmful chemicals for a longer amount of time. Walke said the DEC would make sure that schools most likely to have contamination — for example, those built during the "heyday" of PCBs, between 1960 and 1980 — would get first priority for testing.
One critical question is how PCB cleanup will be funded. Act 74 gives the DEC authority to require remediation when elevated levels of PCBs are found — but provides no funds.