(a) Special Users of Wastewater Sewers. All discharges of storm water, surface water, groundwater, roof runoff, subsurface drainage or other waters not intended to be treated in the treatment facility shall be made to storm sewers or natural outlets designed for such discharges, except as authorized under Section 932.05
(g). Any connection, drain, or arrangement which will permit any such waters to enter any other wastewater sewer shall be deemed to be a violation of this section and this chapter.
(b) Restricted Discharges.
(1) No person shall discharge or cause to be discharged to any of the City's wastewater facilities any substances, materials, waters, or wastes in such quantities or concentrations which will subject to 40 CFR 403.5:
A. Create a fire or explosion hazard including, but not limited to, gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid or gas;
B. Cause corrosive damage or hazard to structures, equipment or personnel of the wastewater facilities, but in no case discharges with the following properties:
1. Having a pH lower than 5.0 or greater than 10.0 for more than ten percent (10%) of the time in a twenty-four hour period.
2. Having a pH lower than 3.5 or greater than 12.0 for any period exceeding fifteen minutes.
These requirements may be modified for facilities designed to accommodate greater ranges;
C. Cause obstruction to the flow in sewers, or other interference with the operation of wastewater facilities due to accumulation of solid or viscous materials;
D. Constitute a rate of discharge or substantial deviation from normal rates of discharge, ("slug discharge"), sufficient to cause interference in the operation and performance of the wastewater facilities;
E. Contain heat in amounts which will accelerate the biodegradation of wastes, causing the formation of excessive amounts of hydrogen sulfide in the wastewater sewer or inhibit biological activity in the wastewater treatment facilities, but in no case shall the discharge of heat cause the temperature in the City wastewater sewer to exceed 58°C (150°F) or the temperature of the influent to the treatment facilities to exceed 40° C (104° F) unless the facilities can accommodate such heat;
F. Contain more than 100 milligrams per liter of nonbiodegradable oils of mineral or petroleum origin;
G. Contain flotable oils, fat or grease;
H. Contain noxious, malodorous gas or substance which is present in quantities that create a public nuisance or a hazard to life;
I. Contain radioactive wastes in harmful quantities as defined by applicable State and Federal regulations;
J. Contain any garbage that has not been properly shredded;
K. Contain any odor or color producing substances exceeding concentration limits which may be established by the Manager for purposes of meeting the City's NPDES permit;
(2) If, in establishing discharge restrictions, discharge limits, or pretreatment standards pursuant to this section, the Manager establishes concentration limits to be met by an industrial user per 40 CFR 403.6, the Manager in lieu of concentration limits, shall establish mass limits of comparable stringency for an individual industrial user at the request of such user.
(c) Federal Categorical Pretreatment Standards.
(1) Pursuant to 40 CFR 403.6, no person shall discharge or cause to be discharged to any wastewater facilities, wastewaters containing substances subject to an applicable Federal Categorical Pretreatment Standard promulgated by EPA in excess of the quantity prescribed in such applicable pretreatment standards except as otherwise provided in this section. Compliance with such applicable pretreatment standards shall be within three years of the date the standard is promulgated; provided, however, compliance with a categorical pretreatment standard for new sources shall be required upon promulgation.
(2) Upon application by a Class III user, the Manager shall revise any limitations on substances specified in the applicable pretreatment standards to reflect removal of the substances by the wastewater treatment facility. The revised discharge limit for specified substances shall be derived in accordance with Federal law Sections 40 CFR 403.7, 40 CFR 403. 11 and 40 CFR 403.13.
(3) Upon application by a Class III user, the Manager shall adjust any limitation on substance specified in the applicable pretreatment standards to consider factors relating to such person which are fundamentally different from the factors considered by EPA during the development of the pretreatment standard. Requests for and determinations of a fundamentally different adjustment shall be in accordance with Federal law Sections 40 CFR 403.07, 40 CFR 403.11 and 40 CFR 403.13.
(4) The Manager shall notify any Class III user affected by the provisions of this section and establish an enforceable compliance schedule for each.
(5) No person shall connect to the sewerage system any vessel, tank, container or receptacle of any kind used to receive, hold, store or in any other way handle any toxic or deleterious material or substance, the discharge of which is prohibited by this regulation hereof, through which quantities of such material or substance could accidentally or otherwise be discharged directly or indirectly into the system. Persons who, in the course of their business or otherwise, transport, store, receive, ship or in any other way handle or process any such material or substance shall take precautions to prevent accidental spillage of such substances to any connection to the system by way of floor drains, basins, catch basins, gutters, manholes or any other such connection. Whenever the City determines that accidental spillage has occurred through any such connection to the system, it shall require the owner to eliminate the connection.
(6) In case of any accidental release to the sewerage system of an unacceptable discharge or of any substance or material considered by the City to be toxic or deleterious, as provided in this section, the user shall notify the City immediately and in no case later than one hour following such discharge so that remedial action can be taken. Costs incurred to correct any damage resulting from such a discharge shall be charged to the user. Failure to report such a discharge shall result in a charge of up to five hundred dollars ($500.00) in
addition to the costs of correction and in addition to the penalty provided in Section 932.02
(e). Each such discharge shall be considered separately and the costs and charges therefor shall be levied accordingly. A separate discharge shall be deemed made each day during or on which such discharge continues and charges therefor shall be levied accordingly. Such charges shall be collected by the City in the same manner as all other charges set by the City.
(d) Special Agreements. Nothing in this section shall be construed as preventing any special agreement or arrangement between the City and any user of the wastewater facilities whereby wastewater of unusual strength or character is accepted into the system and specially treated subject to any payments or user charges as may be applicable.
(e) Water and Energy Conservation. The conservation of water and energy shall be encouraged by the Manager. In establishing discharge restrictions upon industrial users, he shall take into account already implemented or planned conservation steps revealed by the Class III user. Upon request of the Manager, each industrial user will provide the Manager with pertinent information showing that the quantities of substances or pollutants have not been nor will be increased as a result of the conservation steps. Upon such a showing to the satisfaction of the Manager, he shall make adjustments to discharge restrictions, which have been based on concentrations to reflect the conservation steps.
(Ord. 1463-90. Passed 5-29-90.)