How should I correctly write this question?

“Can you provide documentation stating the noise levels, so that we are able to show compliance if we get audited?”
Even though this is a question, I feel like the question mark at the end doesn’t seem right. I would’ve put a full stop at the end but knowing it is a question I have put the question mark there. It could be written as a question and a sentence, “Can you provide documentation? So, that we are able to show compliance.” Just wondering how to correctly write as one sentence/question.