Here is a parent letter for the field trip next Friday. It has instructions for the milk jug that your student needs to bring for the field trip. 

http://www.aaps.k12.mi.us/ins.environed/files/2nd_gravel_parent.pdf

If you are chaperoning the field trip please make sure that you completed the background check. Also please make sure that your students are there at 9:00 a.m. as well as the chaperones.