How does David Foster Wallace use imagery in Infinite Jest: A Novel?

Page 583 contains this example of imagery for a dystopian land:
"The fenced front yards are the toy-and-beer-can-strewn type where the brown grass grows in uneven tufts and the leaves haven't been raked and are piled in wind-blown lines of force along the base of the fence and unpruned hedges and overfull wastebaskets and untwisted trash bags are on the sagging porch because nobody's gotten around to taking them down to the E.W.D. dumpster at the corner and garbage from the overfull receptacles blows out into the yard and mixes with the leaves along the fences' base and some gets out into the street and is never picked up and eventually becomes part of the composition of the street."