PART 3 Activities to which Article 4 applies and conditions

19 Maintenance of coast protection, drainage and flood defence works
1 Article 4 applies to an activity carried on for the purpose of maintaining any—
(a) coast protection works;
(b) drainage works; or
(c) flood defence works.
2 Paragraph (1) is subject to the condition is that the activity is carried on within the existing boundaries of the works being maintained.
3 But Article 4 does not apply—
(a) in relation to any such activity which consists of beach replenishment; or
(b) to an activity that causes or is likely to cause obstruction or danger to navigation.