A.
For the purposes of imposing the Stormwater Utility charge, all lots
and parcels within the City are classified into the following customer
classes:
B.
The City Engineer shall prepare and maintain an updated current list
of all lots and parcels of real property (land) within the City of
Onalaska and assign the appropriate customer classification to each
customer account. This list shall include the number of ERUs assigned
to each customer account.
C.
The average square footage of impervious area of the ERU as of the
date of adoption of this section is hereby established to be equivalent
to 3,888 square feet.
D.
The ERU charges for the foregoing customer classifications shall
be established as follows:
1.
Residential single-family: one ERU;
2.
Residential duplex: 0.5 ERU, multiplied by each dwelling unit;
3.
Multifamily (including apartments greater than or equal to three
units, condominiums, and mobile homes): The charge per unit shall
be calculated by dividing the number of ERUs calculated for the entire
property by the number of units existing on the property;
4.
Commercial: one ERU times a factor obtained by dividing the total
impervious area of the property by the square footage equivalent for
one ERU. Such impervious area shall be determined based upon the best
information reasonably available. The result shall be rounded down
to the nearest 0.1;
5.
Industrial: one ERU times a factor obtained by dividing the total
impervious area of the property by the square footage equivalent for
one ERU. Such impervious area shall be determined based upon the best
information reasonably available. The result shall be rounded down
to the nearest 0.1;
6.
Governmental: one ERU times a factor obtained by dividing the total
impervious area of the property by the square footage equivalent for
one ERU. Such impervious area shall be determined based upon the best
information reasonably available. The result shall be rounded down
to the nearest 0.1; and
7.
Undeveloped and agricultural: No stormwater charge shall be assigned
to undeveloped or agricultural land.
E.
The City Engineer shall be responsible for determining the impervious
area based on the best available information, including, but not limited
to, data supplied by the City Assessor, aerial photography, the property
owner, tenant, or developer. The billing amount shall be updated by
the City Engineer based on any additions to the impervious area as
approved through the building permit or site plan process. Individual
property owners may submit site and building surveys to the City Engineer
that help more accurately determine the total area and impervious
area.
F.
The minimum charges for any parcel shall be equal to the rate for
0.4 ERU, unless it contains no impervious surface.
G.
All unoccupied developed lots and parcels with impervious surfaces
shall be subject to a stormwater utility charge.
H.
The Common Council, from time to time, by budget adoption may establish
classifications other than the customer classifications set forth
in this section, as may be likely to provide a reasonable and fair
distribution of the costs of the stormwater utility to all users.
