A. Applicability: This chapter shall be applicable to all public sewers which are owned, operated and maintained by the district.
B. Use Of Public Sewers: The use of the public sewers in Benewah County LIDs 1 through 5 shall be in accordance with the following regulations:
1. No person shall discharge or cause to be discharged any stormwater, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water, or unpolluted industrial process waters to any sanitary sewer.
2. No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
a. Any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid, gas, or septic tank sludge or septage.
b. Any waters or wastes containing toxic or poisonous solids, liquids, organic chemicals, or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any sewage disposal process, constitute any hazard to humans or animals, create a public nuisance, or create any hazard in the receiving waters of the sewage treatment plant, including, but not limited to, cyanides in excess of two milligrams per liter (2 mg/l) as CN in the wastes as discharged to the public sewer.
c. Any waters or wastes having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the sewage works.
d. Solid or viscous substances in quantities or of such size capable of causing obstruction to flow in sewers, or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails, paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
3. No person shall discharge or cause to be discharged the following described substances, materials, waters, or wastes, if it appears likely in the opinion of the district department of health and welfare, or the Panhandle health district that such wastes can harm either the sewers, sewage disposal process, or equipment, have an adverse effect on the receiving stream or groundwater, or can otherwise endanger life, limb, public property, or constitute a nuisance. In forming its opinion as to the acceptability of these wastes, the county will give consideration to such factors as the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the sewage disposal process, capacity of the sewage disposal system, degree of treatability of wastes in the sewage disposal system, and other pertinent factors. The substances prohibited are those items listed as hazardous wastes by the environmental protection agency (EPA) in the EPA priority pollutant list, or other substances deemed unacceptable by the county, the Panhandle health district, or the Idaho department of health and welfare, division of environment.
C. Basis For Determining Sewer User Charges For Operation, Maintenance And Replacement Of Sewerage System:
1. Purpose: There is hereby established a system of periodic service charges and fees in order to equitably impose upon expenses of maintenance, operation, replacement and repair of the public sewerage system. The said service charges and fees for purposes of computation shall be based upon: a) the volume and content of the wastewater discharged into the sewerage system of the county; and b) the actual and expected costs and expenses of maintenance, operation, replacement, upgrading and repair of the sewerage system, such charges and fees being determined to be the benefit derived by each building, structure or user from the sewer system and sewage treatment facilities.
2. Equivalent User: One equivalent user hereinafter referred to as "EU" shall be defined as the sewage flow from one typical single-family residence. The sewage flow from one typical single-family residence is three hundred (300) gallons of sewage per day, 0.37 pound of biochemical oxygen demand (BOD5) per day, and 0.37 pounds of suspended solids (SS) per day.
3. Collection And Interceptor Charges: The monthly cost per EU shall be calculated by dividing the total annual projected expenditures for operation, maintenance, administration, bond retirement, capital reserve, replacement and expansion (hereinafter referred to as TC), by the summation of the total number of EU x 12. This calculation can be expressed by the following formula:
Cost for one EU = TC/total # of EU x 12
a. The TC shall be calculated at the end of each fiscal year and the rates adjusted to reflect the projected costs of the service for the following fiscal year.
b. A single-family residence shall be assessed the cost for one EU.
c. The charge for special users, other than single-family residences, shall be directly proportional to the waste produced from the special user to that from a single-family residence, except that no charge shall be less than that for one EU. The charge for special users shall be calculated as follows:
(1) For metered nonresidential users, the monthly service charge for special users shall be based upon the monthly average water use as measured by the water meter reading from the previous month. The said monthly service charge shall be calculated as follows: Monthly average water use from previous month x cost for one EU/300 x 30.
(2) For nonmetered nonresidential users, the EU shall be calculated depending upon the classification of each special user according to the following schedule:
NONMETERED NONRESIDENTIAL USERS EQUIVALENT USER (EU) SCHEDULE | |
Mobile home parks | EU = # of occupied spaces |
NONMETERED NONRESIDENTIAL USERS EQUIVALENT USER (EU) SCHEDULE | |
Mobile home parks | EU = # of occupied spaces |
Churches | EU = 1 |
Taverns | EU = # seats x 0.07 |
Restaurant | EU = # seats x 0.17 |
Businesses and offices | EU = # employees x 0.07 |
Service stations | EU = # sets of 3 hoses x 1.7 |
Hospitals | EU = # beds x 0.7 and # employees x 0.17 |
Bowling alleys | EU = # lanes x 0.7 |
Medical and dental offices | EU = # hours/week/employee x 0.01 |
Auto dealership | EU = 2 |
Multi-unit dwelling | EU = # units x 1 |
Boarding houses | EU = # occupants x 0.25 |
Laundromats | EU = # washing machines x 0.56 |
Theaters | EU = # seats x 0.007 |
Nursing homes | EU = # beds x 0.7 |
Motel and hotel with kitchen | EU = # units x 0.5 |
Motel and hotel without kitchen | EU = # units x 0.25 |
High schools: | |
Without kitchen | EU = # students x 0.13 |
With kitchen | EU = # students x 0.25 |
With showers | EU = # students x 0.17 |
With kitchen and showers | EU = # students x 0.29 |
Elementary schools: | |
Without kitchen | EU = # students x 0.065 |
With kitchen | EU = # students x 0.125 |
With showers | EU = # students x 0.085 |
With kitchen and showers | EU = # students x 0.145 |
Miscellaneous: Any sewer use that cannot be classified in one of the above classes shall have its EU computed on an individual basis by the county. | |
Multi-unit seasonal: Fee shall be prorated based upon the water usage of similar metered units and shall be established by the county. | |
(3) Any user that discharges industrial wastes or produces a flow, biochemical oxygen demand of suspended solids loading in excess of five percent (5%) of the average dry weather sewage flow measured at the main interceptor shall be calculated by the county. No quantity discounts shall be allowed and the county may assess a surcharge on waste flows with biochemical oxygen demand or suspended solids concentrations above two hundred fifty milligrams per liter (250 mg/l).
4. Treatment Charges: Monthly charges for wastewater treatment services shall be as established by the city of St. Maries, Idaho.
5. Revisions To User Charge: Revisions to the user charges shall be based upon actual operation, maintenance, capital reserve and replacement expenses and/or a change in the total number of equivalent users, total daily suspended solids, and/or total daily flow to the public sewerage system. As a minimum, the user charge for operation, maintenance and capital reserve shall be reviewed annually and updated to reflect actual costs plus reserve for replacement and repair. (Ord. 30, 10-24-1983)