(a) To correct for the billing error that occurred in calculating the per-acre-foot charge for many water rights fee payors for Fiscal Year 2016-17, the State Water Board will apply a credit in the amount of any overage billed in Fiscal Year 2016-17 to the annual billing invoice amount for Fiscal Year 2017-18 for each fee payor who received an incorrectly calculated bill.

(b) No fee payor shall be required to petition for reconsideration in order to receive a credit on their annual billing invoice amount for Fiscal Year 2017-18 for the amount of any overage billed in Fiscal Year 2016-17 due to the per-acre-foot calculation error.