Ron Myrick, an environmental engineer from Tetra Tech, informed the Martha’s Vineyard Airport Commission Thursday that another 12 wells south of the airport had been sampled. Each of the wells was below state guidelines for per- and polyfluoroalkyl substances (PFAS).
Wells have been tested for the past several months after PFAS, a substance found within the foam required by the FAA for fighting an aircraft fire, was found in wells near the airport in November.
Tetra Tech is planning a phase one initial site investigation in September to fill data gaps before submitting a full report to the DEP in late November. The airport commission would also have the ability to review a draft of the report.
There are 40 treatment systems treating 36 wells. The airport paid for the treatment systems, and hired Culligan Water Filtration of New England to install them.
Myrick said all systems are performing down to nondetectable levels. Myrick was approved to make reports to the Massachusetts Department of Environmental Protection every six months rather than monthly since PFAS levels have dropped.