§ 53.135 STORM DRAINAGE FEE.

   (A)   The purpose of this section is to establish a charge against real property within the City of Vermillion for tire operation, maintenance, and capital expenses of the storm sewer and drainage system.

   (B)   All real property within the city shall be charged an annual fee for the operation, maintenance, and capital improvements of the storm sewer and drainage system. The fee for each such property shall be based on the lot area, a runoff weighting factor, and a unit financial charge, and which fee is determined as follows: Storm drainage fee equals the runoff weighting factor, multiplied by parcel area (in square feet), multiplied by unit financial charge (in dollars per square foot).

      (1)   Runoff weighting factor.

         (a)   The runoff weighting factor is determined by the type of land use, and indicates the relative volume of storm water runoff from a land parcel, as a function of the percentage of impervious surfaces covering each land parcel. The runoff weighting factor is to be assigned by land use type, as shown in Table I:

Table I
Land Use Code	Land Use	Runoff Weighting Factor
11	Estate (lot area over 30,000 square feet)	2.5
11	Single-family (lot area of 30,000 square (feet or less)	7.5
12	Duplex	7.5
13	Townhouses	7.5
14	Apartment building (1-3 stories)	11.25
15	Apartment building (4 stories or more)	11.25
16	Dormitories	11.25
17	Mobile homes and trailers	11.25
18	Other residential	11.25
21	Apparel and textiles	17.0
22	Wood, furniture, fixtures	17.0
23	Lumberyards	17.0
24	Printing and publishing	17.0
25	Warehouse, indoor storage	17.0
26	Electronic, scientific, optical	17.0
27	Construction yards, including plumbing, electrical heating, contractors	17.0
28	Chemical, petroleum storage	17.0
29	Other light, pollution free manufacturing not included	17.0
31	Food, agricultural processing, stockyards, rendering	17.0
32	Paper and pulp	17.0
33	Chemical, petroleum, rubber, and plastic	17.0
34	Stone, glass, clay, cement, brick	17.0

 

Land Use Code	Land Use	Runoff Weighting Factor
35	Primary metal, smelting	17.0
36	Metal fabricating	17.0
37	Salvage, junkyard, resource recycling	7.5
38	Other heavy manufacturing not elsewhere coded	17.0
41	Bus, railroad yards, terminals, right-of-way	5.0
42	Airport	5.0
43	Auto parking ramps and lots (Commercial or public only - not auxiliary parking)	18.75
44	Highway and street, right-of-way	5.0
45	Communication (TV, radio, and the like)	17.0
46	Utilities (Gas, sewer, water, telephone, and the like)	17.0
47	Truck terminal	17.0
48	Military bases	17.0
49	Other transportation, communication and utilities not elsewhere coded	17.0
51	Wholesale - Food, produce	18.75
52	Wholesale - Other	18.75
53	Extensive retail - Building supplies, including lumber, home repair supplies	18.75
54	Extensive retail - Farm equipment and implements	18.75
55	Extensive retail - New and used car dealers	18.75
56	Extensive retail - Recreational vehicles, marine	18.75
57	Extensive retail - Tires, batteries, auto accessories	18.75
58	Extensive retail - Auto repair, body shop	18.75
59	Extensive retail - Other retail with outside storage	18.75
61	Food store	18.75
62	Neighborhood, commercial, hardware, drugs, laundromat, beauty shop, barber shop, neighborhood shopping center	18.75
63	Gasoline auto service station	18.75
64	Department store, discount store, regional shopping center	18.75
63	Clothes and apparel	18.75
66	Specialty retail - Jewelry, gifts, and the like	18.75
67	Furniture, household appliances	18.75

 

Land Use Code	Land Use	Runoff Weighting Factor
68	Other retail not elsewhere coded	18.75
71	Banks and financial institutions	18.75
72	Churches	11.25
73	Nursing homes and hospitals	11.25
74	Colleges and universities, adult education	11.25
75	Primary and secondary education	11.25
76	Day care centers	11.25
77	Medical offices, clinics	18.75
78	Government offices	18.75
79	Offices not elsewhere coded (Real estate, Law, and the like)	18.75
81	Cultural activities - Libraries, museums, and the like	18.75
82	Assembly areas, arenas, stadiums	18.75
83	Theaters	18.75
84	Restaurants, bars, lounges	18.75
85	Hotels, motels, resort lodging	18.75
86	Public parks, golf courses, fairgrounds	1.0
87	Private country club and other recreational areas	1.0
88	Other cultural and entertainment uses, not elsewhere coded	1.0
91	Cropland and farms	1.0
92	Feedlots	1.0
93	Grasslands	1.0
94	Mining and quarrying**	1.0
95	Cemetery	1.0
96	Sanitary landfills	1.0
97	Vacant	1.0
98	Under construction	1.0
99	Other not elsewhere coded	1.0
NOTES TO TABLE:
* Land included in the F-1 floodway zone shall have a runoff weighting factor of 0 for the actual flood hazard area.
** Quarries are individually calculated with a runoff weighting factor of 0 for the actual quarry area.

 

         (b)   Upon written request from a property owner, a detailed site study will be conducted by the City Engineering Department to determine the runoff weighting factor. This written request must be submitted to the City Engineer on or before April 30, of the year the fees are charged to the subject land parcel. The engineering department shall calculate the percentage of impervious area for the subject parcel which contributes storm water runoff to the drainage and system of the city. This system includes the storm sewer system, drainageways, and all ditches and waterways within and flowing away from the City of Vermillion. The runoff weighting factor is then determined through utilization of Table II. This calculation shall be completed by July 1, of the year the written appeal is requested.

TABLE II
Percentage Impervious Area	Average Runoff to Rainfall Ratio (R**)	Runoff Weighting (R x 25)
0%	0.04	1.0
10%	0.19	4.75
15%	0.26	6.5
20%	0.30	7.5
30%	0.38	9.5
40%	0.45	11.25
50%	0.53	13.25
60%	0.60	15.0
70%	0.68	17.0
80%	0.75	I8.75
90%	0.83	20.75
100%	0.90	22.5
NOTES TO TABLE:
** These values are derived from the “STORM” equation (Figure 5-20, Page 5-49), A Statistical Method for tire Assessment of Urban Storm Drainage, EFIA, Washington, D.C., January 1979. Fat-low percentage impervious surfaces (0% to 20%), a linear relationship was assumed between the “STORM” equation and empirical data derived from drainage runoff in high depression storage, loose soils, and flat areas.

 

         (c)   Interpolation of the runoff weighting factor for a given percentage of impervious area not listed in Table II may be obtained by assuming a linear relationship between the values listed.

         (d)   The City Engineer may direct that the runoff weighting factor for, a given parcel Lie calculated by a detailed site investigation and Table II, where an obvious departure from the percentage of impervious surfaces of similar land uses exists.

         (e)   A determination of the runoff weighting factor, resulting from a detailed site investigation and Table II, brought about either by written request from a property owner or direction from the public utilities director, shall be used in the calculation of the subject parcels storm drainage fee and shall replace the factor previously derived from Table I, even if the resulting value is higher.

      (2)   Parcel area. Parcel area is to be obtained from the records of the Clay County Department of Equalization.

      (3)   Unit financial charge. The unit financial charge shall be as set by resolution of the Vermillion City Council.

(1975 Code, § 25-127)