I would contact the construction company. You stated it was caused by recent floods let them know where it is and see if they clean it up. If they dont then take another course of action. I know the construction companys I have worked for would gladly clean it up.( People amaze me they all want roads to drive on,warehouses to work in and houses to live in but they always want to make things difficult for those doing the work.)

I approve this message ( in here ) and no it is not directed at any party involved in this thread.