Hon Robin Chapple asks the Minister for Environment about a significant pH change at the 'big goanna' petroglyph site on the Burrup Peninsula, seeking explanation and investigation. The Minister acknowledges the issue and agrees to investigate.

AnsweredQoN 1266Legislative Council
Asked
29 October 2019
Portfolio
Environment

QuestionView source ↗

BURRUP PENINSULA —
ROCK ACIDITY
1266. Hon ROBIN CHAPPLE to the Minister for Environment:
I
refer to question without notice 1245, which was asked last Thursday, and refer
again to the document in the possession of the Western Australian
Environmental Protection Authority and the site known as the big goanna
petroglyph.
(1) Is the
minister aware that the acidity of this site has changed remarkably to that of
almost neutral in the region of pH 7 in the last year when all the surrounding
rocks still retained a reading of approximately pH 3.6?
(2) If yes to
(1), does the minister understand the reason for this dramatic change and will
he identify what has caused the change?
(3) If no to (1),
will the minister investigate what has caused the pH to change and report the
reason to the Legislative Council?

AnswerView source ↗

I thank the honourable member for
some notice of the question.
(1) I am aware of the issue as a result
of Hon Robin Chapple raising it.
(2) No.
(3) Yes.

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