Hon Jim Chown asks about the structural integrity and maintenance of the Rottnest Island sea wall, referencing the 2016-17 Annual Report. The answer details the specific works undertaken between November 2017 and June 2018 to ensure the wall's stability and conservation.

AnsweredQoN 1762Legislative Council
Asked
8 November 2018
Portfolio
Tourism; Racing and Gaming; Small Business; Defence Issues; Citizenship and Multicultural Interests

QuestionView source ↗

I refer to the Rottnest Island Authority Annual Report 2016-17 , and I ask: (a) in relation to Service 2 “sea wall” on page 68, was the sea wall made structurally sound; and (b) if yes to (a), what works or maintenance was undertaken and on what dates?

AnswerView source ↗

Answered
6 December 2018
Responded by
Minister for Regional Development representing the Minister for Tourism; Racing and Gaming; Small Business; Defence Issues; Citizenship and Multicultural Interests
Response time
9 days
(a)   Yes.
(b)   The works involved:
-   propping of the wall;
-   grout column injections behind the wall to create a new mass retaining wall;
-   removal of top soil behind the wall on Vincent Way and trimming of intersecting tree roots;
-   installation of a tree root barrier system; and
-   conservation works to the face of the wall including removal of limewash to enable underlying cement mortar repairs and replacement of stone voids, before the limewash was repaired to match the existing sea wall colour.
The work commenced in November 2017 and concluded in June 2018.

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