They got there noise ordinance passed a few years back, now they are complaining about dirt.
$1000 fine, 90 days in prison, and the ability to impound and sell your bike/quad/side by side if the law passes.
http://pittsburgh.cbslocal.com/2014/11/18/atv-enthusiasts-fill-hampton-twp-meeting-in-light-of-proposed-ban/