) ▁appe aled ▁the ▁decision ▁to ▁the ▁Nova ▁Scot ia ▁Util ity ▁and ▁Review ▁Board ▁( NS U AR B ), ▁which ▁ruled ▁on ▁ 1 3 ▁September ▁ 2 0 0 7 ▁that ▁the ▁development ▁could ▁proceed . ▁The ▁NS U AR B ▁stated ▁that ▁the ▁proposal ▁did ▁not ▁viol ate ▁the ▁Municipal ▁Pl anning ▁Str ategy ▁and ▁did ▁not ▁imp inge ▁on ▁the ▁stat ut ory ▁view plan es ▁that ▁protect ▁the ▁views ▁from ▁Cit adel ▁Hill . ▁ ▁Despite ▁finally ▁gain ing ▁appro val , ▁United ▁G ulf ▁never ▁proceeded ▁with ▁the ▁Tw isted ▁Sister s ▁proposal ▁and ▁the ▁Development ▁Ag re ement ▁exp ired ▁in ▁ 2 0 1 0 . ▁In ▁June ▁ 2 0 1 1 , ▁regional ▁council ▁discussed ▁dis charg ing ▁the ▁Development ▁Ag re ement , ▁but ▁United ▁G ulf ▁object ed ▁due ▁to ▁a ▁misunder standing ▁over ▁the ▁exp iry ▁date ▁and ▁stated ▁that ▁they ▁were ▁prepar ing ▁a ▁new ▁proposal ▁for ▁the ▁site . ▁ ▁Sky e ▁Hal if ax ▁( 2 0 1 2 ) ▁In ▁ 2 0 1 2 , ▁United ▁G ulf ▁proposed ▁a ▁tw in ▁tower ▁development ▁for ▁the ▁site ▁called ▁Sky e ▁Hal if ax , ▁the ▁largest ▁and ▁tall est ▁development ▁ever ▁proposed ▁in ▁the ▁city . ▁The ▁proposal ▁compr ised ▁two ▁ 4 4 - store y ▁to wers , ▁at op ▁a ▁four - store y ▁shared ▁pod ium , ▁designed ▁by ▁Toronto ▁architect ▁Peter ▁Cle w es . ▁The ▁complex ▁would ▁house