3. An enforcement notice must—
(a)state that the enforcing authority is of that opinion;
(b)specify the matters constituting the contravention or the matters making it likely that the contravention will arise, as the case may be;
(c)specify the steps that must be taken to remedy the contravention or to remedy the matters making it likely that the contravention will arise, as the case may be; and
(d)specify the period within which those steps must be taken.