If you can't make this Household Hazardous Waste event you have other options. There will be another on October 21, 2017. You can also attend the Household Hazardous Waste events of other communities with which Lynn has a reciprocal agreement. Below is the flier.
Latex paint is not hazardous waste, but you do need to harden it. You can buy paint hardener at the hardware store or at Home Depot, or you can use kitty litter. Once the paint is hardened you can throw it out with your regular trash.