Maybe I am just confused. What did you volunteer for? If everything were perfect and all the cages were clean... what exactly would you be volunteering to do?

Why would you want to turn them in?! they accepted YOU as a volunteer! That means:

#1 they know and admit they need help.
#2 they want YOU to help!

I think you even beginning to consider contacting the authorities at this point would be a knee jerk reaction. As you are "volunteering...." clean the tanks! help them fine tune their setups! Help them develop a schedule so things don't get so bad again! If you THINK you know something they don't tell them.

Now I am not suggesting that there are not things that obviously need to be corrected here, but also remember the golden rule.... don't assume your way of doing things is the only right way.