(A) No user shall contribute or cause to be contributed, directly or indirectly to the POTW, any pollutant or wastewater which will pass through or cause interference with the operation or performance of the POTW.
(B) No user shall contribute the following substance to the POTW:
(1) Any substance 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 those not less than 140 degrees Fahrenheit or 60 degrees Centigrade using the test methods specified in 40 CFR 261.21.
(2) Any solid or viscous substance which may cause obstruction to the flow in the sewer or other interference with the operation of the waste treatment facilities such as, but not limit to: Grease, garbage with particles greater than two inches in any dimension, or any material which can be disposed of as trash.
(3) Any wastewater having a pH less than 6.0 or greater than 9.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel of the POTW.
(4) Any substances which may cause a public nuisance, cause hazard to life or prevent entry into the sewers for maintenance and repair.
(5) Heat in an amount 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 exceeds 40 degrees C (104 degrees F) unless the approval authority, upon request of the POTW, approves alternate temperature limits.
(6) Petroleum oil, non-biodegradable 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 pre-approved designated manholes.
(9) Any pollutant, including oxygen demanding pollutants released in a discharge at the flow rate and/or concentration (including any slug load) which may cause interference to the POTW.
(10) Any wastewater having effluent characteristics in excess of:
Constituent | Maximum |
Constituent | Maximum |
Ammonia | 30 mg/l surcharge limit |
BOD | 250 mg/l surcharge limit |
TSS | 250 mg/l surcharge limit |
Oil and grease | 100 mg/l |
pH | 5.5 - 10.0 |
Copper | 0.9 mg/l |
Cadmium | 0.2 mg/l |
Nickel | 1.3 mg/l |
Zinc | 1.6 mg/l |
Hexavalent Chromium | 2.0 mg/l |
Total Chromium | 2.0 mg/l |
Lead | 0.8 mg/l |
Arsenic | 0.3 mg/l |
Mercury | Pending |
Selenium | 0.5 mg/l |
Silver | 1.2 mg/l |
Cyanide | 0.3 mg/l |
Molybdenum | 0.2 mg/l |
Prohibitive limit for BOD and TSS is 600 mg/l | |
Prohibitive limit for Ammonia is 80 mg/l | |
(Ord. 4-1999, passed 3-8-99; Am. Ord. 14-2001, passed 9-10-01; Am. Ord. 2-2005, passed 1-10-05; Am. Ord. 17-2005, passed 6-13-05; Am. Ord. 13-2012, passed 8-13-12; Am. Ord. 15-2016, passed 7-11-16; Am. Ord. 16-2018, passed 7-9-18)