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June 18, 2007 (Regular Meeting) Page 436 (25) Ammonia compounds. Any material containing ammonia, anvnonia salts, or other chelating agents which will produce metallic complexes that interfere with the wastewater treatment system. (26) Hazardous waste. Any material that would be identified as hazardous waste according to 40 CFR Part 261 if not disposed of in a sewer except as may be specifically authorized by the Executive-Director. (27) Human or animal parts. Recognizable portions of the human or animal anatomy. (28) Toxicity. Wastewater causing, alone or in conjunction with other ' sources, the treatment plant's effluent to fail a toxicity test. (29) Excessive foaming. Any wastes containing detergents, surface active agents, or other substances which may cause excessive foaming in the wastewater treatment system. (30) Explosive limit. At no time, shall two successive readings on an explosion hazard meter, at the point of discharge into the system (or at any point in the system) be more than five percent (5~) nor any single reading over ten percent (10~) of the lower explosive limit (LEL) of the meter. (31) Discharge of untreated wastewater. Within the boundaries of WSACC, it shall be unlawful for any person to discharge to any outlet, other than a sanitary sewer, any domestic or industrial waste except where suitable treatment has been provided in accordance with provisions of this ordinance or where an appropriate NPDES permit has been obtained. (32) Alkyl Phenol Ethoxylatea (APEe). Any compounds containing APES shall be prohibited due to the inhibiting and toxic effect of APES on the biological treatment at the POTW. Linear alcohol ethoxylates, a more readily biodegradable surfactant, may be ' substituted for APES. (33) Equipment damage. Any wastewater containing chemicals, either singly or_by interaction with other chemicals to cause operational problems or damage to the POTW process equipment and/or collection system. (c) Pollutants, substances, wastewater, or other wastes prohibited by this section shall not be processed or stored in such a manner that they could be discharged __„idcntcl' ~ ,,. ill- -" to the POTW ~r ..gu~~ s-p'ste~a. All floor drains located in process or materials storage areas must discharge to the industrial user's pretreatment facility before connecting with the system. (d) When the Executive Director determines that a user(s) is contributing to the POTW any of .the above enumerated substances in such amounts which may cause or contribute to interference of the POTW operation or pass through, the Executive Director shall: 1) Advise the user(s) of the potential impact of the contribution on the POTW in accordance with Section 8.1; and 2) Take appropriate actions in accordance with Section 4 for such user to protect the POTW from interference or pass through. 2.2 National Categorical Pretreatment Standards ' Users subject to categorical pretreatment standards are required to comply with applicable standards as. set out in 90 CFR Chapter 1, Subchapter N, Parts 905- 471 and incorporated herein. (a) Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the Executive Director may impose equivalent concentration or mass limits in accordance with 90 CFR 903.6(c).