General Prohibitive Discharge Standards

Permittees shall comply with all the general prohibitive discharge standards in the sewer use ordinance.   Namely, the permittee shall not discharge to the sewer system:   

A.  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 sewage works or to the operation of the sewage works. 

B.  Solids or viscous substances that may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities. 

C.  Any wastewater having a pH less than 5.0 or greater than 11.0; or wastewater having any other corrosive property capable of causing damage or hazard to structure, equipment, or personnel of the sewage works.  

D.  Any wastewater containing toxic pollutants or of high chlorine demand in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a toxic effect in the receiving waters of the sewage works, or exceed the limitation set forth in the EPA Categorical Pretreatment Standard, or any other Federal, State or County standards. 

E.   Pollutants that result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause worker health and safety problems. This prohibition includes, but is not limited to, wastewaters, which contain liquids, solids, or gases that cause gases, vapors, or fumes from the discharge to exceed 10% of the immediately dangerous to life and health (IDLH) concentration. Discharges which contain more than one pollutant which may contribute to fume toxicity shall be subject to more restrictive limitations, as determined necessary by the Director. The more restrictive discharge limits shall be calculated based on the additive fume toxicity of all compounds identified or reasonably expected to be present in the discharge. 

F.  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 are sufficient to prevent entry into the sewer for maintenance and repair. 

G.  Any substance such as residues, sludge’s, or scum that may cause the sewage works to be unsuitable for land application or reclamation and reuse or to interfere with the reclamation process. 

H.  Any substance which will cause the sewage works to violate its NPDES Permit or the receiving water quality standards. 

I.  Any wastewater with color or sufficient light absorbance to interfere with treatment plant process, prevent analytical determinations, or create any aesthetic effect on the treatment plant effluent, such as, but not limited to, dye wastes and vegetable tanning solutions. 

J.    Daily maximum concentration or mass loading shall not be exceeded on any single calendar day. Where daily maximum limitations are expressed in terms of a concentration, the daily discharge is the arithmetical measurement of the pollutant concentration derived from all measurements taken that day. Where daily maximum limitations are expressed in units of mass, the daily discharge is the total mass discharged during the day. If a composite sample is required for a parameter, the determination whether the daily maximum limitation for that parameter has been exceeded on a single calendar day shall be based on the composite sample collected for that parameter on that calendar day. If grab samples are required for a parameter, the determination whether the daily maximum limitation for that parameter has been exceeded on a calendar day shall be based on the average of all grab samples collected for that parameter on that calendar day. If only one grab sample is collected for a parameter on a given day, the determination whether the daily maximum limitation for that parameter has been exceeded for the day shall be based on the results of that single grab sample. If the pollutant concentration in any sample is less than the applicable detection limit, that value shall be regarded as zero (0) when calculating the daily maximum concentration.  

K.  Any wastewater having a temperature which will inhibit biological activity in the sewage works resulting in Interference, but in no case wastewater with a temperature at the introduction into the sewage works which exceeds 60 degrees Celsius (140F) or is lower than 0 degree Celsius (32F).

L.  Any wastewater containing any radioactive wastes or isotopes of such half?life or concentration as may exceed limits established by applicable State or Federal regulations. 

M.  Any wastewater that causes a hazard to human life or creates a public nuisance. 

N.  Containing organic solvent extractable substances such as fats, wax, grease, or oils of petroleum origin, whether emulsified or not, in excess of 100 mg/l or containing substances which may solidify or become viscous at temperatures between 32 degrees F and at 140 degrees F.

O.  Gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquids, solids, gases or other pollutants  which cause the wastewater to have a closed cup flashpoint of less than 140 degrees F, or pollutants which  cause an exceedance of 10 percent of the Lower Explosive Limit (LEL) at any point within the POTW, or  containing gasoline, benzene, xylene or toluene which causes the wastewater to exceed the State of  Michigan Surface Water Quality Standards. 

P.  Any garbage that has not been ground by household type or other suitable garbage grinders. 

Q.  Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch, manure, or any other solids or viscous substances capable of causing obstructions or other interferences with proper operation of the sewer system. 

R.  Toxic or poisonous substances in sufficient quantity to injure or interfere with any wastewater treatment process, to constitute hazards to humans or animals, or to create any hazard in waters, which receive, treated effluent from the sewer system treatment plant.  Toxic wastes shall include, but are not limited to wastes containing cyanide, chromium, cadmium, mercury, copper, and nickel ions. 

S.  Solids of such character and quantity that special and unusual attention required for their handling.  

T.  Any substance which would cause the treatment plant to be in noncompliance with sludge use, recycle or disposal criteria pursuant to guidelines or regulations developed under section 405 of the Federal Act, the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act or other regulations or criteria for sludge management and disposal as required by the State. 

U.  Any medical or infectious wastes prohibited from being discharged under Federal or State law and regulations. 

V.  Any pollutant, including BOD pollutants, released at a flow rate and/or pollutant concentration which would cause interference with the treatment plant. 

W.  Material considered a hazardous waste under the Resource Conservation and Recovery Act (RCRA). 

X.  Any commercial or industrial waste that may cause pass through of pollutants or interference with the wastewater treatment plant operations or that violates Federal, State, or local restrictions. 

Y.  Trucked and hauled wastes, except at discharge points designated by YCUA. 

Z.  Pollutants causing toxic gases, vapors, and fumes. 

AA. Any leachate from a hazardous waste landfill.  

BB. Any landfill leachate unless permitted and authorized under a written contract, within YCUA’s sole discretion, between YCUA and the User. 

CC. Any pollutant discharge which constitutes a slug.