19.—(1) The Administrator may at any time in writing—
(a)withdraw a notice of intent or a final notice in relation to a fixed monetary penalty;
(b)withdraw a notice of intent or a final notice in relation to a variable monetary penalty or reduce the amount specified in the notice;
(c)withdraw a notice of intent or a final notice in relation to a non-monetary discretionary requirement or amend steps specified in the notice so as to reduce the amount of work necessary to comply with the notice;
(d)withdraw a notice of intent in relation to a non-compliance penalty or reduce the amount specified in the notice;
(e)withdraw a non-compliance penalty notice or reduce the amount specified in the notice;
(f)withdraw an enforcement costs recovery notice or reduce the amount specified in the notice.
(2) The Administrator shall consult the seller before withdrawing or amending a notice under paragraph (1).
(3) Paragraph (2) does not apply in any case where it is impracticable to consult the seller.