what you do depends on what you got them for...
to use as 'chips' aka ground cover or mulch , you need to move the pile ,spread it all out to STOP it breaking down
to use as 'compost', you need to turn/mix the pile every few days,to keep it decomposing. Unless it's totally composted, the chips will take nitrogen from the veggie garden soil...NOT a good thing !
BTW any Black Walnut in the 'chip' will kill off tomoatoes and peppers and a LOT of other veggies !