§ 150-17. Prohibited wastes.

No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will pass through or interfere with the operation or performance of the POTW. These general prohibitions apply to all such users of a POTW whether or not the user is subject to National Categorical Pretreatment Standards or any other national, state or local pretreatment standards or requirements. A user may not contribute the following substances to any POTW:

A. 

Any liquid or vapor which would cause the influent to the treatment plant to have a temperature higher than 104° F. or 40° C.

B. 

Any water or waste which contains more than 100 parts per million by weight of total oil or grease. (E.P.A. Storet No. 45501). Also petroleum oil, nonbiodegradable cutting oil or products of mineral oil origin in amounts that will cause interference or pass through.

C. 

Any liquids, solids or gases which by reason of their nature or quantity are, or may be, sufficient, either alone or by interaction with other substances, to cause fire or explosion or be injurious in any other way to the wastewater treatment plant or to the operation of the wastewater treatment plant. Prohibited materials include but are 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, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides, sulfides and any other substances which the City, the state or EPA has determined as being hazardous to the POTW.

D. 

Any garbage that has not been properly shredded.

E. 

Solid or viscous substances capable of causing obstruction to flow in sewers or otherwise interfering with the proper operation of the POTW. Such substances include but are not limited to ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, woods or paunch manure.

F. 

Any waters or wastes having corrosive properties capable of causing damage or hazard to structures, equipment and personnel of the POTW. Specifically, the pH of wastes discharged into the POTW must be within 5.5 to 9.5 pH units.

G. 

Any waters or wastes containing a toxic or poisonous substance or of high chlorine demand in sufficient quantity to injure or interfere with any POTW treatment plant process or which could constitute a hazard to humans or animals.

H. 

Any wastewater with objectionable color which may not be removed by the POTW treatment plant.

I. 

Any noxious or malodorous liquids, gases or solids which either singly or by interaction with other wastes are sufficient to create a public nuisance or hazard to life or result in toxic gases, fumes or vapors in quantities capable of causing acute health and safety problems for POTW personnel or are otherwise sufficient to prevent entry into the sewers for maintenance and repair.

J. 

Any waters containing radioactive materials exceeding such concentrations as recommended by the National Committee on Radiation Protection as set forth in the appropriate handbook of the National Bureau of Standards. All users of radioactive material shall register with the Director of Utilities within 30 days of the effective date of this chapter.

K. 

Any pollutants, including oxygen-demanding pollutants, released at a flow rate and/or pollutant concentration which a user knows or has reason to know will cause interference to the wastewater treatment plant. In any event, in no case shall a wastewater discharge have a flow rate or contain concentration or mass quantities of pollutants that exceed for any time period longer than 15 minutes more than five times the average daily flow, pollutant concentration or pollutant loading during normal operation.

L. 

Any substance which may cause the POTW treatment plant effluent or any other product of the POTW treatment plant, such as residues, sludges or scums, to be unsuitable for reclamation and reuse or which might interfere with the disposal process. In no case shall a substance discharged to the POTW cause the POTW treatment plant to be in noncompliance with applicable sludge use, sludge disposal criteria, guidelines or regulations developed by the NYSDEC or the USEPA.

M. 

Any substance which will cause the POTW treatment plant to violate its SPDES permit or the receiving water quality standards.

N. 

Any wastewater which causes a hazard to human life or, in the opinion of the Director of Utilities, creates a public nuisance.

O. 

Wastewater containing pollutants which have a concentration in excess of those listed below. These concentrations shall be applied to wastewater effluents at a point just prior to discharge into the City sewer system.

	Pollutant	Maximum Pollutant Concentration Limits (milligrams per liter)
	Arsenic	0.05
	Cadmium	0.10
	Chromium	1.50
	Copper	1.00
	Cyanide	0.50
	Lead	0.20
	Mercury	0.007
	Molybdenum	0.03
	Nickel	0.30
	Phosphorus	5.00
	Selenium	0.06
	Silver	1.20
	Zinc	2.80

P. 

Any trucked or hauled pollutants, except at discharge points designated by the POTW. Unless otherwise authorized by the director, the only acceptable discharge point for such wastes is at the Lockport POTW septic well discharge pit on the south side of the grit/screen building.