"Insignificant Activities" means activities at a facility that the Department specified in Appendix B of Chapter 140 for the purpose of Chapter 140 and the activities at a facility that the Department specified in Appendix B of Chapter 115 for the purpose of Chapter 115. A source must include emissions from insignificant activities in determining if the source is a Part 70 major source.
NOTE: As specified in Appendix B of Chapter 140, certain insignificant activities are categorically exempt from the Part 70 license application and certain insignificant activities shall be included on the Part 70 application but may not be listed in the Part 70 license.
06- 096 C.M.R. ch. 100, § 72