] ▁and ▁interest ▁in ▁the ▁property ▁ev apor ated . ▁The ▁clean ▁up ▁is ▁expected ▁to ▁cost ▁$ 1 7 5 ▁million ." ▁In ▁ 2 0 1 5 , ▁the ▁Corps ▁stated ▁that ▁it ▁wants ▁to ▁collect ▁more ▁data ▁before ▁recomm ending ▁a ▁rem edy . ▁ ▁Dem ograph ics ▁ ▁At ▁the ▁ 2 0 1 0 ▁census ▁base ▁population ▁had ▁shr unk ▁by ▁more ▁than ▁ 2 5 % ▁to ▁ 3 , 0 7 2 . ▁At ▁the ▁census ▁of ▁ 2 0 0 0 , ▁there ▁had ▁been ▁ 4 , 4 4 0 ▁people , ▁ 6 3 9 ▁households , ▁and ▁ 6 3 1 ▁families ▁res iding ▁on ▁the ▁base . ▁The ▁population ▁density ▁was ▁ 8 8 8 . 3 ▁people ▁per ▁square ▁mile ▁( 3 4 2 . 9 / km ²). ▁There ▁were ▁ 7 3 5 ▁housing ▁units ▁at ▁an ▁average ▁density ▁of ▁ 1 4 7 . 0 / sq   mi ▁( 5 6 . 8 / km ²). ▁The ▁ra cial ▁make up ▁of ▁the ▁base ▁was ▁ 7 9 . 6 % ▁White , ▁ 9 . 4 % ▁African ▁American , ▁ 0 . 5 % ▁Native ▁American , ▁ 2 . 2 % ▁Asian , ▁ 0 . 3 % ▁Pacific ▁Island er , ▁ 4 . 4 % ▁from ▁other ▁races , ▁and ▁ 3 . 6 % ▁from ▁two ▁or ▁more ▁races . ▁His pan ic ▁or ▁Lat ino ▁of ▁any ▁race ▁were