The provisions of Section 42-10 (USES PERMITTED AS-OF-RIGHT) shall be modified to permit the following uses in M2-1 Districts, subject to the requirements of Section 144-212 (Floor area limitations on additional uses):

(a)        all Use Group 3A uses, as set forth in Section 22-13, not otherwise permitted by the underlying regulations other than uses containing sleeping accommodations; and

(b)        all Use Group 6C, 9A, 10A and 12B uses, as set forth in Sections 32-15, 32-18, 32-19 and 32-21, respectively, not otherwise permitted by the underlying regulations.