All governmental entities within the county that have an already established emergency communications system using 911 call access, upon resolution duly adopted and approved and presented to the joint powers board or in their absence to the board of county commissioners, may ask that their existing emergency communication system area be excluded and such area shall be excluded from the county-wide emergency communications service but such exclusion shall not affect the right of the board of county commissioners to levy the fees as herein provided. No city or other agency shall establish an individual emergency communication system once a county-wide system as provided in this chapter has been adopted by the board of county commissioners. Whenever an area is excluded pursuant to this section, the board of county commissioners shall remit to the excluded entity one hundred percent (100%) of the fees collected in the excluded area as provided pursuant to this chapter. Any area excluded pursuant to this section may be subsequently included upon resolution duly adopted and approved and presented to the joint powers board or, in their absence, to the board of county commissioners.