(A) Establishment of a drainage utility fee. A drainage utility charge is hereby imposed upon each developed lot and parcel within the service area. For purposes of imposing the drainage utility charge, all lots and parcels within the city are classified into the following customer categories:
(1) Residential property; and
(2) Commercial Property.
(B) ERU value. The ERU value for the city is determined through an inventory of all developed parcels in the city and determination of impervious area for each parcel. Statistical and hydrologic evaluation of these data determined that the equivalent residential unit impervious area value for assigning fees to commercial properties is 3,350 square feet.
(C) Single-family residential rates. Based on statistical evaluation of land parcel impervious area for the single-family customer category, three rates are established for assignment of fees as follows:
(1) Tier 1 “Small”: 0.55 ERU, <3,253 square feet impervious area;
(2) Tier 2 “Average”: 1.00 ERU, 3,253-6,980 square feet impervious area;
(3) Tier 3 “Large”: 1.70 ERU, >6,980 square feet impervious area.
(D) Commercial rates. Based on impervious area determination for each parcel:
(1) Total ERU's = (Impervious Area/3,350 sq. ft.), minimum 1 ERU.
(2) The Total ERU shall be rounded to the nearest one-hundredth.
(E) Calculation of drainage utility charge. The monthly drainage utility charge for properties shall be calculated by multiplying the total number of ERU's for the parcel by the ERU monthly billing rate.
(F) ERU monthly billing rate. The following ERU monthly billing rate is hereby established and shall be used to calculate the total monthly drainage utility charge for all property located in the city, in accordance with the applicable formula established in this subsection:
ERU rate = $4 per ERU per month.
(G) Impervious area determination. The City Administrator or his or her designee shall be responsible for determining impervious area of property based on reliable data, including geographic information system technology, aerial photography, and other reliable means for determining impervious area. The City Administrator may require additional information from the property owner, tenant, or developer to make the determination. The amount of a charge may be revised by the City Administrator based on any additions to the impervious area through the city approved building permit process.
(H) Revision of rates. The City Council may review the schedule of charges on an annual basis and may increase or decrease charges upon a determination that an increase or decrease is warranted.
(I) No credit. No drainage utility charge credit shall be given for the installation of drainage facilities required by the City Land Development Code or state law.
(Ord. 100921-A, passed 9-21-2010)