"Within this red line, which is the outline for AOC 1 is where nearly all the PCB impacts we've identified at the site are located."
The Greenwich Board of Education brought a panel of environmental experts to a public open house session at Central Middle School to further discuss their year in a half investigation on the hazardous chemicals found beneath Greenwich High School's campus.
"It's the material beneath the fields that's the issue," said Greenwich Commissioner of Public Works Amy Siebert.
As we've reported PCBs (polychlorinated biphenyls) were found in several areas beneath the surface around the high school's athletic field in 2011. Only recently has the town completed the investigation and released a report. Experts announced they've also identified arsenic and PAHs in the soil.
Since the chemicals found under ground, experts assure they not a health risk to staff and students.
"The results of the human health risk assessment indicate that the risks based on the cancer and non caner effects were below the regulatory target level," said AECOM Risk Assessor Julie Kabel. "So this indicates that the risks posed are considered acceptable for pretty much all the receptors we've evaluated, which included the students, the teachers, visitors to the school and the maintenance workers, the custodians or grounds keepers."
Experts presented three options for toxicity reduction saying it should take about 12 years for complete remediation. Sites have fenced off and experts say they'll further investigate compounds found in surrounding sediment and surface water.
"The barriers that have been put in place here prevent exposure and we will continue to work with all the agencies involved in the final remedial process," said Sharee Rusnak from the CT Department of Health.
The panel says they'll determine a remediation plan and publish a feasibility study for public review and comment by the end of the month. Reports are posted on greenwichschools.org.