Shasta Lake Municipal Code Art. IV Discharge Testing and Prohibitions

All measurements, tests and analyses of characteristics of water and waste to which reference is made in Chapters 12.04, 12.08 and Title 13 of this code shall be determined in accordance with the latest edition of Standard Methods for the Examination of Water and Wastewater, published by the American Public Health Association, and shall be performed upon suitable samples taken at the control manhole. In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected.

(Amended during 1998 codification; prior code § 13.16.010)

A. General Prohibitions. No user shall introduce or cause to be introduced into the publicly owned treatment works (POTW) any pollutant or wastewater which causes pass through or interference. These general prohibitions apply to all users of the POTW whether or not they are subject to categorical pretreatment standards or any other national, state, or local pretreatment standards or requirements.

B. Specific Prohibitions. No user shall introduce or cause to be introduced into the POTW the following pollutants, substances, or wastewater:

1. Pollutants which create a fire or explosive hazard in the POTW, including, but not limited to, wastestreams with a closed-cup flashpoint of less than one hundred forty (140) degrees F (sixty (60) degrees C) using the test methods specified in 40 CFR 261.21;

2. Wastewater having a pH less than 5.0 or more than 11, or otherwise causing corrosive structural damage to the POTW or equipment;

3. Solid or viscous substances in amounts which will cause obstruction of the flow in the sewer system or in the POTW resulting in interference;

4. Pollutants, including oxygen-demanding pollutants (BOD, etc.), released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with the POTW;

5. Wastewater having a temperature which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the introduction into the treatment plant to exceed one hundred four (104) degrees F (forty (40) degrees C);

6. Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass through;

7. Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems;

8. Trucked or hauled pollutants, except at discharge points designated by the city manager;

9. Noxious or malodorous liquids, gases, solids, or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or a hazard to life, or to prevent entry into the sewer for maintenance or repair;

10. Wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently impart color to the treatment plant's effluent, thereby violating the city's NPDES Permit;

11. Wastewater containing any radioactive wastes or isotopes except in compliance with applicable state or federal regulations;

12. Storm water, surface water, ground water, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water, and unpolluted wastewater, unless specifically authorized by the city manager;

13. Sludges, screenings, or other residues from the pretreatment of industrial wastes;

14. Medical wastes, except as specifically authorized by the city manager in a wastewater discharge permit;

15. Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test;

16. Detergents, surface-active agents, or other substances which may cause excessive foaming in the POTW;

17. Fats, oils, or greases of animal or vegetable origin in concentrations greater than three hundred (300) mg/l;

18. Any garbage, fruit, vegetable, animal or other solid waste material resulting from the preparation or handling of any food or drinks in any dwelling, or other establishment that does not fall within the definition of "food service establishment" pursuant to SLMC Section 13.16.680 or otherwise require compliance with SLMC Chapter 13.16, Article VII (Fats, Oils and Grease Control), unless the same shall have passed through a mechanical garbage or waste grinder of such construction and have such operating characteristics that not more than five percent by weight (determined on a dry basis) of all material discharged from it shall have dimension larger than one-quarter inch, and no particle shall have any dimension greater than one-half inch;

19. Untreatable Wastes. Any water or waste containing substances which are not amenable to treatment, or which cause the treatment plant effluent to fail to meet the discharge requirements established by the State Water Resources Control Board, the California Regional Water Quality Control Board, or any other state or regulatory agency.

Pollutants, substances, or wastewater prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the POTW.

(Ord. 97-101 § 2: prior code § 13.16.020)

(Ord. No. 12-226, § 1(2), 8-7-2012)