7. Section 178 of the TCPA (execution and cost of works required by enforcement notices) as it has effect in relation to a hazardous substances contravention notice, is to be read as if—E+W
(a)in subsection (2), in both places where the words “breach of planning control” occur, it read “contravention of hazardous substances control”;
(b)subsections (3) to (5) were omitted; and
(c)the following subsection were inserted after subsection (6)—
“(7) Where different periods are specified for different steps in a hazardous substances contravention notice by virtue of section 24(5)(b) of the PHSA, references in this section and in section 179 to the period for compliance with a hazardous substances contravention notice, in relation to a step, are to the period by the end of which the step is required to have been taken.”