▁This ▁facility ▁serves ▁as ▁a ▁sorting ▁facility ▁for ▁packages ▁trav elling ▁in ▁the ▁United ▁States ▁and ▁the ▁world . ▁Const ruction ▁of ▁the ▁C AC H ▁facility ▁began ▁in ▁October ▁ 1 9 9 1 ▁at ▁the ▁site ▁previously ▁occupied ▁by ▁the ▁G M ▁T ruck ▁and ▁Bus ▁manufact uring ▁plant , ▁with ▁the ▁C AC H ▁facility ▁opening ▁on ▁March ▁ 3 1 , ▁ 1 9 9 5 . ▁The ▁facility ▁has ▁an ▁area ▁of ▁, ▁and ▁has ▁a ▁per imeter ▁of ▁. ▁It ▁emp lo ys ▁over ▁ 9 , 0 0 0 ▁people ▁available ▁to ▁work ▁one ▁of ▁the ▁four ▁sorts , ▁Sun r ise , ▁Day , ▁Tw il ight , ▁Night . ▁Pack ages ▁are ▁only ▁handled ▁during ▁loading ▁and ▁un loading , ▁all ▁sorting ▁takes ▁place ▁through ▁a ▁system ▁of ▁convey or ▁bel ts ▁and ▁push ▁p add les , ▁util izing ▁high - speed ▁cam eras ▁to ▁read ▁the ▁destination ▁from ▁a ▁smart ▁label ▁to ▁sort ▁a ▁package ▁to ▁its ▁tra iler . ▁ ▁While ▁C AC H ▁does ▁not ▁service ▁package ▁cars , ▁the ▁facility ▁sorts ▁approximately ▁ 1 . 6 ▁million ▁packages ▁per ▁day . ▁During ▁the ▁months ▁of ▁November ▁and ▁December , ▁volume ▁can ▁exceed ▁ 3 ▁million ▁packages ▁per ▁day . ▁U PS ' s ▁web ▁tracking ▁system ▁used ▁to ▁list ▁the ▁C AC H ▁as ▁" C AC H , ▁IL ." ▁Since ▁there ▁is ▁no ▁city ▁named ▁C AC H , ▁this ▁confused ▁customers . ▁As ▁a ▁response ,