Drainage District fee calculation.

A. Each parcel in the Town that is not vacant or agricultural shall be subject to an annual Drainage District fee proportionate to the total amount of impervious surface present at the site as calculated below.(1) Every residential site shall be deemed to have an impervious surface area equal to one ERU.(2) The number of ERUs of impervious surface area on a nonresidential lot with an impervious surface area greater than one ERU shall be calculated by dividing the lot's impervious surface area by the value of one ERU and rounding the result up to the nearest tenth of an ERU. Minimum nonresidential lot assessment shall be 1.0 ERU.B.

Equivalent residential unit.(1) An equivalent residential unit is equal to 5,183 square feet.(2) The MS4 Official shall report to the Town Board regarding changes in the average impervious surface of residential lots should the ERU change.C. Recording of impervious surface area.(1) The Engineering Department shall endeavor to update the impervious surface data in the Town's geographic information systems at least once every five years, beginning with the 2024 assessment roll.(2) Upon close-out of any building permit for a nonresidential property, the Building Inspector or authorized code enforcement personnel shall provide to the Engineering Department notice of the net number of square feet of impervious surface added to the lot, as indicated on documentation associated with said permit, together with the applicable Tax Map number.

The Engineering Department shall thereafter update the data in the Town's geographic information systems to reflect the adjusted impervious surface area on the lot and provide notice of the change(s) to the Assessment Office. The Assessment Department will update the ERUs on the assessment roll and ensure the change(s) will be included on the next tax bill information according to the Real Property Tax Law and the New York State Rules and Regulations providing therefor.