The plant is expanding and has plans for a 55 foot sound barrier to reduce noise. The State board approved plans in the beginning of August 2017. They have also implemented wooded buffer areas which we have discussed before as a natural way to reduce unwanted noise. On their website they provide some information about how they are addressing noise:

Will there be increased noise as a result of the expansion?

While it’s been in operation for more than 40 years, the existing Medway facility has been a significant but relatively quiet member of the community. With the two-unit addition that will not change. To ensure the project meets all state and local standards, the expansion will include the addition of a 55-foot sound wall around the new units as well as the addition of sound reduction equipment.