Just closing the dump is not the solution, where are you going to put the opala?  The solutions comes in parts, 1) reduce the inflow  2) charge more for tipping fees which would motivate the reduction, 3) recycle and reuse 4) open landfill in each community then the effects will be closer to home and people will realize how big of a problem this is.  Its like closing your toilet in your home.......now what, easy when you dumping in someone else's neighborhood.