I don't remember if there are still boxes in Vance Trails Park, but just got this info. If you do have a box in there, you may want to make it temp unavailable:

Vance Trails Park will be closed for approximately 1 month starting May 2, 2018. The City will be adding a new pedestrian bridge over Fish Pot Creek and removing the Low Water Crossing Bridge. Sorry about the inconvenience.
This is the park on Hanna Rd and Vance Rd.