▁Support ▁Squadron ▁ ▁Air ▁National ▁Guard ▁( ANG ) ▁ ▁Wy oming ▁Air ▁National ▁Guard ▁▁ 1 5 3 rd ▁Airl ift ▁Wing ▁▁ 1 5 3 rd ▁Command ▁and ▁Control ▁Squadron ▁( GS U ) ▁ ▁Geography ▁ ▁According ▁to ▁the ▁United ▁States ▁Census ▁Bureau , ▁the ▁base ▁has ▁a ▁total ▁area ▁of ▁ 5 . 0   square ▁miles ▁( 1 3 . 1   km ² ), ▁of ▁which , ▁ 5 . 0   square ▁miles ▁( 1 2 . 9   km ² ) ▁of ▁it ▁is ▁land ▁and ▁ 0 . 0 4   square ▁miles ▁( 0 . 1   km ² ) ▁of ▁it ▁is ▁water . ▁The ▁total ▁area ▁is ▁ 0 . 7 9 % ▁water . ▁ ▁Environment al ▁cont am ination ▁ ▁Due ▁to ▁extensive ▁soil ▁and ▁ground water ▁cont am ination , ▁the ▁Warren ▁A FB ▁has ▁been ▁a ▁super fund ▁site ▁listed ▁on ▁the ▁National ▁Prior ities ▁List ▁( N PL ) ▁since ▁ 2 1 ▁February ▁ 1 9 9 0 . ▁Tr ich lor o eth yl ene ▁( T CE ) ▁used ▁to ▁deg re ase ▁equipment ▁was ▁found ▁in ▁ground water ▁in ▁the ▁West ▁Che y enne ▁area ▁from ▁Bel voir ▁R anch ▁to ▁about ▁ 1 0 ▁miles ▁to ▁the ▁east ▁of ▁the ▁site ▁during ▁the ▁ 1 9 9 0 s , ▁as ▁on ▁numerous ▁other ▁military ▁install ations . ▁As ▁of ▁ 2 0 1 4 , ▁the ▁DO D ▁has ▁spent