All surcharge
moneys remitted to the County of Suffolk by a service supplier and
all other moneys dedicated to the payment of system costs from whatever
source derived or received by the County of Suffolk shall be expended
only upon appropriation of the County Legislature and only for payment
of system costs as permitted by this article. The County of Suffolk
shall separately account for and keep adequate books and records of
the amount and source of all such revenues and of the amount and object
or purpose of all expenditures thereof. If at the end of any fiscal
year the total amount of all such revenues exceeds the amount necessary
and expended for payment of system costs in such fiscal year, such
unencumbered cash surplus shall be carried over for the payment of
system costs in the following fiscal year. If at the end of any fiscal
year such unencumbered cash surplus exceeds an amount equal to 5%
of that necessary for the payment of system costs in such fiscal year,
the County Legislature shall by local law reduce the surcharge for
the following fiscal year to a level which more adequately reflects
the system costs requirements of its enhanced 911 system. The County
Legislature may also by local law reestablish or increase such surcharge
if the revenues generated by such surcharge and by any other source
are not adequate to pay for system costs.