42.—(1) SEPA must publish any revocation of standard rules made by or notified to it.
(2) SEPA must not include a standard rules condition relating to revoked rules in a permit after such publication.
(3) A standard rules condition included in a permit before any revocation will apply until the permit is varied, and the revoked rules continue to have effect in relation to the permit until the variation.
(4) SEPA must vary a permit affected by a revocation as soon as reasonably practicable after publication of the revocation.