Sec. 11. "Eligible county" refers to the following counties:
(1) Lake County.
(2) Porter County.
(3) LaPorte County, if:
(A) the fiscal body of the county has adopted an ordinance under IC 36-7.5-2-3(d) providing that the county is joining the development authority; and
(B) the fiscal body of the city described in IC 36-7.5-2-3(d) has adopted an ordinance under IC 36-7.5-2-3(d) providing that the city is joining the development authority.