13.25.030 Prohibited discharges and discharge limitations.
Federal or state discharge standards shall apply unless the city standards or ordinances are more restrictive. It is unlawful for any person to discharge or cause to be discharged to the city wastewater system the following:
A. Any storm water, surface water, groundwater, roof runoff, swimming pool or surface drainage that may constitute inflow.
B. Pollutants which individually or in mixing with wastewater create human health and safety risks, such as fire, explosion, blockage of flow, and release of toxic material, to and within the city wastewater system, including but not limited to gasoline, benzine, fuel oil or any petroleum products or volatile liquids, and gases.
C. Solid or viscous pollutants in amounts that will cause obstruction to the flow in the city wastewater system or other interference or damage with the collection system or treatment plant, including but not limited to grease, fatty material, offal, garbage, stone dust, sand, dirt, gravel, sawdust, metal filings or broken glass.
D. Discharges from improperly maintained pretreatment devices, including but not limited to grease traps and sand traps.
E. Water or waste containing inert suspended solids, including but not limited to fuller’s earth, lime, slurries, and lime residues, or containing oxygen demanding pollutants in quantities that constitute a significant load on the wastewater treatment plant.
F. Any waters or waste containing a toxic, radioactive, poisonous or other substances in sufficient quantity to injure or interfere with any wastewater treatment process, cause corrosive structural damage, constitute a hazard to humans or create any hazard to the city wastewater system or in the receiving waters of the wastewater treatment plant.
G. Any waters with a pH less than 5.5 or greater than 9.5.
H. Any liquids with temperature exceeding 110 degrees Fahrenheit or with temperature less than 30 degrees Fahrenheit.
I. Any water or waste that could cause a violation of any categorical standard or pretreatment requirement or of any other prohibition or limitation required by federal or state law.
J. Any water or waste that has in any way been diluted as a substitute for pretreatment for the purpose of obtaining compliance with any categorical standard or pretreatment requirement imposed by this division except where dilution is expressly authorized by any categorical standard.
K. Any water or waste that is transported from the point of discharge for discharge to the city wastewater system by any septage hauler or similarly transported waste unless the transporter has first:
1. Disclosed to the director the origin, nature, concentration and volume of all pollutants to be discharged.
2. Obtained the consent of the director to discharge.
L. Any water or waste which could cause interference with the city wastewater system operations. [Code 2006 § 13-7-3. Ord. 2009-04, 4-14-2009; Ord. 2014-06 § 1, 5-27-2014; Res. 2014-10 Exh. A, 5-27-2014].