(A) No user shall contribute the following substances to the POTW:
(1) Any substances which by reason of their nature or quantity may create a fire or explosion hazard or be injurious to the POTW or to the operation of the POTW, including but not limited to, waste streams with a closed cup flashpoint of less than 140°F. or 60°C. using the test methods specified in 40 CFR 261.21.
(2) Any solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the waste treatment facilities such as, but not limited to: grease greater than 100 mg/l, garbage with particles greater than ½ inch in any dimension, or any material which can be disposed of as trash.
(3) Any wastewater having a pH less than 6.5 or greater than 9.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel of the POTW.
(4) Any substance which may cause a public nuisance, cause hazard to life or prevent entry into the sewers for maintenance and repair.
(5) Heat in amounts which will inhibit biological activity in the POTW resulting in interference, but in no case heat in such quantities that the temperature at the POTW treatment plant exceeds 40°C. (104°F.) unless the local agency approves alternate temperature limits.
(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) Any trucked or hauled pollutants, except at discharge points designated by the POTW.
(9) Any pollutant, including oxygen demanding pollutants released in a discharge at a flow rate and/or concentration (including any slug load), which may cause interference to the POTW.
(B) No user shall contribute any wastewater having effluent characteristics in excess of:
Constituent | Maximum |
Constituent | Maximum |
BOD5 | 250 |
TSS | 300 |
Oil and grease | 100 |
pH | 9.5 |
Phosphorus | 10.0 |
Copper | 6.0 |
Cadmium | 0.4 |
Nickel | 2.0 |
Zinc | 2.0 |
Chromium | 10.0 |
Arsenic | 0.06 |
Mercury | < 0.0002 |
Silver | 0.015 |
Cyanide | 5.0 |
Lead | 0.3 |
(Ord. 214, passed 6-5-95; Am. Ord. 240, passed 2-15-99) Penalty, see § 51.999