§ 53.06 RATE STRUCTURE.
   Every parcel within the service area shall be subject to a stormwater management utility service charge derived from the rate schedule described below. The rate structure to distribute the cost of services associated with the operation, repair, improvement and maintenance of public drainage systems and facilities through a schedule of rates, fees, charges, and penalties related to the operation of a stormwater management utility and Stormwater Management Enterprise Fund as established in § 53.04 shall be based on the following three rate components:
   (A)   Fixed charge per account (FCPA) based on account existence which directly relates to certain administrative, billing, collections, public outreach, and other charges as may be allocated on a per parcel basis. The FCPA shall be the same for each account throughout the county. Expenses for Stormwater Technician, GIS Mapping, and Floodplain Program Officer shall not be included in the FCPA.
   (B)   Gross parcel component on a given land parcel, which is related to quantity of runoff and total pollutant loading of stormwater runoff discharged from that land parcel. The gross acreage component shall equal the total number of acres per parcel multiplied by watershed rate per acre.
   (C)   Impervious surface component on a given land parcel, which directly relates to the volume, rate, and pollutant loading of a stormwater runoff discharged from that land parcel to the county’s structural and natural drainage systems and facilities. An impervious area units charge for stormwater costs shall be allocated to impervious area on an equivalent residential unit (ERU) basis. Impervious surface area rates will apply to each unit or part thereof of imperious area.
      (1)   Based on an analysis by the county of impervious surface area on properties throughout the county, an impervious surface area of 4,500 square feet is hereby designated as one equivalent residential unit (ERU).
      (2)   Each single family residential parcel shall be charged for one ERU of impervious area.
      (3)   Each residential unit in a townhome, condominium, or other multifamily structure with individual unit ownership and duplexes shall be billed for one ERU of impervious area.
      (4)   There will be no impervious area units charge for land parcels with fewer than 450 square feet of impervious surface area.
      (5)   All public and private parcels shall be billed for impervious surface by the number of ERUs multiplied by 40 times the watershed rate.
      (6)   The watershed rate per acre used to determine the gross acre component and impervious surface component shall be set by the Board of Commissioners, upon recommendation by each of the watershed advisory committees and may vary for each watershed based on the level of service and annual budget for the respective watershed.
(Ord. 2013-05-02, passed 6-17-13; Am. Ord. 2014-05-01, passed 5-5-14)