See pages 1 & 30 here:
https://www.mass.gov/files/documents/2019/06/03/2019.05.21 302 CMR 12 - DRAFT - redline - public comment 2019.pdf
To object, attend one of two final "public hearings" (Holyoke June 25 and Brighton July 2) or submit testimony in writing before July 24:
https://www.mass.gov/files/documents/2019/06/03/2019.05.16 - Notice - DRAFT 302 CMR 11, 12.pdf
https://www.mass.gov/files/documents/2019/06/03/2019.05.21 302 CMR 12 - DRAFT - redline - public comment 2019.pdf
To object, attend one of two final "public hearings" (Holyoke June 25 and Brighton July 2) or submit testimony in writing before July 24:
https://www.mass.gov/files/documents/2019/06/03/2019.05.16 - Notice - DRAFT 302 CMR 11, 12.pdf