so I discovered some info on this site AFTER I posted, I guess this isn't uncommon using the suggested links for related posts.

anyway,

syntax I got for accomplishing everything I wanted ended up being

# df -kh | grep /export | awk '$5 >= 85' | sort 6,6d

HOWEVER this omits any entries where the capacity field has a value of 100%, last time I checked...that was more than 85. What am I missing?