Reference 40 C. F. R. 70. 7(e)(4) "significant modification procedures")"Part 70 Significant License Modification" means a license change that does not qualify as a Minor or Major Modification of a Part 70 source, HAP emission limitations, a Part 70 Minor License Modification, or a Part 70 Administrative Revision. A Part 70 Significant License Modification shall be used for license changes that are determined by the Department to be substantial changes in existing testing or monitoring license terms or conditions and the relaxation of reporting or recordkeeping license terms or conditions.
06-096 C.M.R. ch. 100, § 128