The city of Centralia by the passage of Ordinance No. 2136 created and established a storm and surface water utility and elected to exercise all lawful powers necessary for construction, maintenance and operation of the utility, including all powers to fix, alter, regulate and control the rates, charges and conditions for its use.
There is hereby imposed a system of rates and charges on real property within the city served by or to which is available for service the storm and surface water utility established by this chapter. The charges are found to be reasonable and necessary to fund planning, design, construction, operation, maintenance and repair of existing storm and surface water facilities; provided, however, that the city reserves the right to fix, alter, regulate and control the rates and charges.
(Ord. 2143 § 1 (part), 2004; Ord. 2350 § 1 (part), 2015)
For the purposes of this chapter, the following definitions describe the meaning of the terms used in this chapter:
A. 
"City"
means the city of Centralia, Washington, a municipality and its authorized employees.
B. 
"Closed system"
means a portion or type of the storm and surface water system that contains or includes piping, manholes, catch basins and/or other enclosed facilities as part of the collection or transmission facilities.
C. 
"Commercial"
means any business, multifamily building, church, school building, manufacturing facility or any other non-single-family residential building.
D. 
"Commercial on-site system"
means either:
1. 
"Retention structure"
means a permanent structure that provides for the storage of runoff by means of a permanent pool of water or infiltration; or
2. 
"Detention structure"
means a permanent structure designed to store runoff for discharge at rates approximating what would have occurred under predevelopment conditions.
E. 
"Commercial direct discharger"
means either:
1. 
"City systems"
means discharge to the city's system without flow control; or
2. 
"Uncontrolled"
means direct dischargers with no existing connection to the city's system.
F. 
"Council"
means the city council of the city of Centralia, Washington.
G. 
"Equivalent service unit (ESU)"
means a configuration of development or impervious surfaces on a parcel, estimated to contribute an amount of runoff to the city's storm and surface water drainage system which is approximately equal to that created by the average single-family residential parcel. One ESU is equal to three thousand square feet of impervious surface area.
H. 
"Impervious surface"
means that hard surface area which either prevents or retards the entry of water into the soil mantle and/or causes water to run off the surface in greater quantities or at an increased rate of flow from that present under natural conditions. Impervious surfaces may include, but are not limited to, rooftops, concrete or asphalt paving, walkways, patios, driveways, parking lots or storage areas, and oiled, macadam, graveled, or other surfaces which similarly impede the natural infiltration or runoff of surface water.
I. 
"Open system"
means a portion or type of the storm and surface water system that does not contain or include piping, manholes, catch basins, and/or other enclosed facilities or part of the collection or transmission facilities; and consists entirely of roadside or regional ditches, drainage canals or open channels, other than sections of culverts over driveways, roadways or other facilities that cross the storm drainage systems.
J. 
"Parcel"
means the smallest separately segregated unit or plot of land having an identified owner, boundaries and surface area which is documented for tax purposes and given a tax account number by the Lewis County assessor.
K. 
"Single-family residential"
means a dwelling unit for occupancy by a single family.
L. 
"Runoff"
means the portion of precipitation either from rain or melted snow that ultimately reaches natural water courses by flowing over the surface of land.
M. 
"Utility"
means the storm and surface water utility of the city of Centralia.
N. 
"Public works director"
means the public works director of the city of Centralia or his/her designee.
(Ord. 2143 § 1 (part), 2004; Ord. 2350 § 1 (part), 2015)
A. 
Utility charges shall apply to all parcels of real property in the city.
1. 
Single-Family Residential. The single-family residential monthly rate is based on each residential dwelling being equal to one equivalent service unit (ESU).
Single-Family Residential
2022
Flat rate per month
$10.79
2. 
Parcels. Parcels with less than twenty-five-hundredths of one ESU shall not be charged.
3. 
Commercial. Commercial properties shall be charged the following monthly rates based upon the number of ESUs per parcel and type of discharge:
Commercial (Non‑Single‑Family Buildings)
2022
On-Site Retention
per parcel
$10.79
On-Site Detention
first ESU per parcel
$10.79
each additional ESU per parcel
$1.84
Direct Discharge (Controlled)
first ESU per parcel
$10.79
each additional ESU per parcel
$4.42
Direct Discharge (Uncontrolled)
first ESU per parcel
$10.79
each additional ESU per parcel
$5.39
4. 
Exemptions. All public rights-of-way (state and local) shall be excluded from the charges as set forth under this section.
B. 
On January 1st of each year beginning in 2022, the rates shall be adjusted to reflect the annual percentage increase in the United States Consumer Price Index, All Urban Consumers (CPI-U) for November of the preceding year as shown in the release from the Bureau of Labor Statistics. Calculation of the change in the index is made by dividing the current index for November by the preceding index for November and subtracting one. The minimum annual rate increase shall be zero percent.
C. 
Annually the rates shall increase as stated in subsection (B) of this section. The city council of the city of Centralia shall have the discretion to lower the rate of increase established by the CPI-U when the rates for that year are adversely high. The rate shall be lowered by ordinance. The current annual rates shall be posted on the city of Centralia website no later than January 1st of each year.
D. 
Effective January 1, 2022, through December 31, 2022, the storm and surface water rates shall remain at the 2021 rates due to the economic impacts of COVID-19.
E. 
Effective January 1, 2023, through December 31, 2023, the storm and surface water rates shall be capped at a two percent increase based on the adversely high rate of the current CPI -U.
(Ord. 2153 § 1 (part), 2005; Ord. 2143 § 1 (part), 2004; Ord. 2156 § 1, 2005; Ord. 2350 § 1 (part), 2015; Ord. 2487 § 1, 2022; Ord. 2511 § 1, 2022; Ord. 2521 § 1, 2022)
All money collected through utility rates and charges shall be deposited in a storm and surface water utility account as established and maintained by the city finance director.
(Ord. 2143 § 1 (part), 2004; Ord. 2350 § 1 (part), 2015)
Utility rates and charges for real property within the city shall be computed on a monthly basis consistent with the water utility billing schedule as set forth in Chapters 13.02 and 13.03 CMC. For single-family residential accounts the city will bill the responsible person as registered on the water account. If a single-family residential water account is closed, the city will send a "storm and surface water only" billing statement to the property owner. A "storm and surface water only" statement will be sent to those property owners who are not served by city water.
For commercial accounts the city will send storm and surface water billing statements to the parcel/property owner.
The storm and surface water utility billing will be continuous with the exception of modifications brought about by an increase or decrease in the impervious surface area of each account.
(Ord. 2143 § 1 (part), 2004; Ord. 2156 § 2, 2005; Ord. 2350 § 1 (part), 2015)
An appeal of any action of enforcement or billing as set forth in this chapter may be made to the public works director. If the appeal is unresolved, the appeal may be made to the city manager for final determination.
(Ord. 2143 § 1 (part), 2004; Ord. 2350 § 1 (part), 2015)
Rates set forth in this chapter shall be in full force and effect with the June 2015 billing and for subsequent years with the January billing of said year.
(Ord. 2350 § 1 (part), 2015)