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For the purpose of this chapter, the following definitions apply unless the context clearly indicates or requires a different meaning.
LAND USE. The land use for a given parcel shall be one of the land use classifications as shown in the Land Use Chart as determined by the City’s Zoning Officer.
MULTI-FAMILY RESIDENTIAL. Land use classification of parcels with four or more living units.
RESIDENTIAL EQUIVALENCY FACTOR. Referred to herein as REF. The ratio of the accumulated direct runoff generated by a particular land use to the accumulated direct runoff generated by the residential land use.
SINGLE-FAMILY RESIDENTIAL. Land use classification of parcels with three or less living units.
STORM WATER. Water that originates during precipitation events. It may also be used to apply to water that originates with snowmelt that enters the storm water system.
STORM WATER COLLECTION SYSTEM. The system of underground pipes, open channels, inlets, catch basins, maintenance hatches and pumping stations used to collect surface runoff and convey it to a natural watercourse or to a treatment plant; usually human-made.
SURFACE AREA. Referred to herein as SA. The area of the parcel in acres, subject to any standardization, adjustments or exceptions outlined in this chapter.
SURFACE RUNOFF. Storm water that does not soak into the ground becomes surface runoff, which either flows directly into surface waterways or is channeled into storm sewers, which eventually discharge to surface waters.
UNIT RATE. Referred to herein as UR. The rate in dollars per acre to be charged per one REF as established by the City Council per § 54.05 of this chapter.
(Ord. 2014-01, passed 3-24-2014)
The purpose of this chapter is to provide a funding mechanism for the following services:
(A) The administration, planning, analysis, installation, operation, maintenance and replacement of public drainage systems;
(B) The administration, planning, implementation, construction and maintenance of storm water best management practices (BMP) to reduce the introduction of sediment and other pollutants into local water resources;
(C) Other education, engineering, inspection, monitoring, testing and enforcement activities as necessary to maintain compliance with local, state and federal storm water requirements;
(D) Activities necessary to maintain compliance with the National Pollutant Discharge Elimination System (NPDES) municipal separate storm sewer systems (MS4) permit requirements established by the U.S. Environmental Protection Agency, including preparation, implementation and management of a storm water pollution prevention plan (SWPPP) to address the following control measures:
(1) Public education and outreach on storm water impacts;
(2) Public involvement/participation;
(3) Illicit discharge detection and elimination;
(4) Construction site storm water runoff control;
(5) Post-construction runoff control in new development and redevelopment; and
(6) Pollution prevention for municipal operations.
(E) The Storm Water Utility shall be part of the Public Works Department and shall be operated by the Public Works Director, as directed by the City Administrator. This chapter shall apply to the entire City.
(Ord. 2014-01, passed 3-24-2014)
(A) In determining charges the City Council may establish a storm water utility policy and credit policy to specify application fees, exemptions and exceptions, unit areas, residential equivalency factors and unit rates to charge utility users based upon the volume or direct runoff estimated to be generated by various land uses within the City.
(1) Unit rate fee. The unit rate fee will be established and amended from time to time by a resolution of the City Council.
(2) Minimum or maximum fees. The City Council may establish minimum or maximum monthly fee per parcel.
(3) Estimated charges. If for any reason precise information related to the use, development or area of a premise is not available, then storm water utility charges for the premises shall be estimated and billed based upon information then available to the City.
(4) Billing method. Storm water utility fees will be computed and collected by the City together with other City utility fees. For properties not serviced by City utilities, storm water utility fees will be computed on a semi-annual basis and be due on May 15 and October 15 of each year.
(5) Delinquent accounts. Delinquent and unpaid storm water utility fees may be certified to the County Auditor for collection with real estate taxes during the following year or any year thereafter pursuant to M.S. § 444.075, subd. 3, as it may be amended from time to time.
(6) Appeal. If a property owner believes that the fee charged to a particular property is incorrect, they may request review and re-computation of the fee.
(Ord. 2014-01, passed 3-24-2014)
(A) Determining the REF. The accumulated direct runoff (Q) used to determine the REFs shall be calculated based on an evaluation of the land use and application of a standardized soil type and rainfall event.
(B) The calculated direct runoff (Q) shall be based on the runoff equation in the Soil Conservation Services (SCS) National Engineering Handbook Section 4 - Hydrology. The City has utilized SCS TR-55 “Runoff Curve Numbers for Urban Areas,” and a two-inch rainfall to determine runoff from varied land uses, and to establish REF values.
(C) The established “REF” for various zoning classifications in the city is as follows:
Zoning Classification | REF |
Undeveloped/Vacant Land/Bluffs | 0.843 |
RS/AG | 0.535 |
NRSF/LDSF | 0.640 |
R1, R2, R3 | 1.000 |
B1, B2 | 1.643 |
LI, GI | 1.419 |
(1) The average single family lot in the City of Dundas is 0.315 acres. This results in 3.177 single family lots per acre.
(2) For multiple family housing developments with a homeowners association (HOA), the fee will be charged as follows: the total fee for all parcels in the HOA, including common areas and private roads, will be divided equally among all tax parcels with living units.
(3) The minimum annual fee shall be determined by the City Council, but shall not be less per acre than that for a residential lot.
(4) For any residential parcel exceeding 20,000 square feet, in a residentially zoned area (R1, R2, R3), the first 20,000 square feet will be charged a fee at the residential rate, and the balance of the square footage will be charged at the “Undeveloped Properties” rate.
(D) The REF for land uses not listed above shall be determined by the city based on probable hydrologic response.
(Ord. 2014-01, passed 3-24-2014)
The City Council shall from time to time, by resolution, establish the unit rate. The unit rate so established shall be on file with the City Administrator/Clerk-Treasurer and shall be used to compute the charges for a given parcel of land based on the following formula:
Storm water charges = (UR) x (REF) x (SA)
Where:
UR = Unit rate established by the City Council
REF = Per table 54.05(C) above
SA = Surface area
(Ord. 2014-01, passed 3-24-2014)
(A) A standard surface area of 0.315 acres shall be used for single-family residential parcels.
(B) A standard surface area of 0.315 acres for each unit shall be used in computing storm water charges for the following dwellings: duplexes; twin homes; townhouses; and detached townhouses. (For example, a parcel that contains four townhouse units shall have a surface area computed as follows: 4 units x 0.315 acres/unit = 1.26 acres.)
(Ord. 2014-01, passed 3-24-2014)
(A) The City Council may provide for the adjustment of charges for:
(1) Parcels or groups of parcels based upon hydrologic response substantially different from the REF being used for the parcel;
(2) Parcels which employ best management practices (BMPs) or other storm water management practices, on-site that significantly reduce the quantity or improve the quality of storm water runoff from the parcel. In no case shall an adjusted fee per acre be less than that of a residential lot; and
(3) The following are some examples of best management practices (BMPs):
(a) Storm water retention and detention ponds;
(b) Filter strips;
(c) Infiltration trenches or ponds;
(d) Underground storage or filters;
(e) Sand filters;
(f) Soak away pits;
(g) Green roof;
(h) Pervious pavers; and
(i) Dry wells.
(B) The adjustment shall be made only after receiving the recommendation from the City Administrator, and shall not be made effective retroactively. If the adjustment would have the effect of changing the REF for all or substantially all parcels in a particular land use classification, the adjustment shall be accomplished by amending the REF table listed in this storm water utility policy. Adjusted fees will be reviewed every five years or sooner if physical changes occur.
(Ord. 2014-01, passed 3-24-2014)
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