ACEC: 310 CMR 10.23

An Area of Critical Environmental Concern (ACEC) is established [MGL ch 21A s. 2(7)] in special areas that meet designation criteria. The performance standard, of “no adverse effect” on any of the interests protected by these Regulations, must be met for activities in this special area [310 CMR 10.24(5)] (see Areas of Critical Environmental Concern, MCZM 1982).