To unlock the Clean As A Whistle trophy in American Fugitive, you will need to drop a garbage bag at the dump.
You can find garbage bags all over the place outside houses etc. Once you find one, walk over to it, press
to pick it up and then walk to a car and put it in the boot/trunk by pressing
You can find the dump on the island to the top left side of the map. The dump is on the northeast side of the island, slightly above the phone and time trial icons on the map. You will know you have the right place by the garbage trucks outside.
Drive into the garbage dump, remove the bag from your boot/trunk by pressing
, approach one of the piles of garbage and drop it and the trophy will unlock.