Notwithstanding Section 17070.63, the board may allow adjustments to a new construction grant if, as a result of additional requirements imposed by the Department of Toxic Substances Control, the actual amount paid by a school district for allowable costs of hazardous materials evaluation and removal, including associated fees, exceeds the amount of the grant apportionment for those purposes. The combined amount of the initial apportionment for these purposes and the adjustment pursuant to this section may not exceed the amount permitted pursuant to Section 17072.13.