Mass. Gen. Laws ch. 132A § 16H
Discharges may occur within estuaries or coastal embayments from facilities designed to abate existing discharges exclusively from combined sewer overflows, where such facilities have been approved by the division of water pollution control and where such existing discharges from combined sewer overflows degrade or threaten to degrade the designated ocean sanctuary. Nothing in this chapter is intended to alter the effect of the previous exemptions granted under chapter 120 of the acts of 1981 and chapter 369 of the acts of 1984.
The seaward boundary of the Plymouth-Kingston Duxbury coastal embayment shall be a line between Gurnet Point and Rocky Point; provided, however, that no discharge may be authorized in a depth of water which at mean low tide is less than 30 feet.
Mass. Gen. Laws ch. 132A, § 16H