Let me have a look.
Standing Order 108(3)(g) states, “Public Accounts shall include, among other matters, review of and report on the Public Accounts of Canada and all reports of the Auditor General of Canada”.
I wasn't sure what you said at the last point. The commentary was, “[T]he Standing Order includes a blanket reference permitting a standing committee to examine any matter relating to the department as it deems necessary and worthwhile.”