16.—(1) SEPA may, where a permit is varied under regulation 46, or where a partial transfer, surrender or revocation of a permit is effected under regulations 47 to 50, replace the permit with a consolidated permit.
(2) SEPA may, where more than one permit is granted in respect of installations on the same site operated by the same operator, replace those permits with a consolidated permit.
(3) SEPA may, where more than one permit applies to mobile plant operated by the same operator, replace those permits with a consolidated permit.