§ 66. Apportionment of costs. 1. The total of the several amounts set
forth in the annual estimate prepared pursuant to section sixty-seven of
this chapter shall be apportioned to each participant in the proportion
that the full valuation of its taxable real property bears to the
aggregate full valuation of all participants; provided, however, that
the rules and regulations adopted pursuant to section sixty-five of this
chapter may provide that apportionments to a class of participants shall
be based on a percentage of full valuation rather than on entire full
valuation.

2. The full valuation of taxable real property shall be determined by
the use of state equalization rates established pursuant to article
two-a of the tax law. The full valuation of a public benefit corporation
shall be the same as the full valuation of taxable real property of the
tax district or districts within which it operates.