§ 47-4. Prohibited detrimental wastes.

The following detrimental wastes and substances shall not be discharged into any building sewer or any portion of the sewerage system of the District:

A. 

Stormwater, surface water, groundwater, roof runoff, subsurface drainage, uncontaminated cooling water or unpolluted industrial process water.

B. 

Unusual volume of flow or concentration of wastes constituting slugs as heretofore defined in § 47-1.

C. 

Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the Superintendent in compliance with applicable state or federal regulations.

D. 

Any garbage that is not properly shredded.

E. 

Any solids, liquids or gases which alone or by reaction with other substances shall cause a fire and/or an explosion, or in any way be injurious to persons, property or the facilities of the District, or to the operation and/or processes of the District treatment plant.

F. 

Any noxious and/or malodorous solids, liquids or gases which alone or by reaction with other substances will create a public nuisance or hazard to persons or prevent entry to either the sewerage system and/or treatment facilities of the District by District personnel or personnel of public emergency forces.

G. 

Any solids, greases, slurries or viscous material that is capable of obstructing flow in either the sewerage system or treatment facilities of the District, or interfere with the operation and/or processes at the District treatment plant. This includes but is not limited to ashes, cinders, sand, mud, straw, shavings, wood, sawdust, decayed wood, metal, glass, bones, feathers, rubber, plastics, paunch manure and butcher's offal.

H. 

Any toxic materials or chemicals having a capability of impairment of the operational efficiency of the District treatment plant or cause the effluent from such plant not to meet state, interstate or federal requirements for the receiving waters.

I. 

Any liquids having a pH lower than five point five (5.5) or higher than eight point five (8.5), or having a corrosive ability of causing damage to any District sewerage or treatment facility.

J. 

Any liquid or vapor having a temperature greater than one hundred fifty degrees Fahrenheit (150º F.).

K. 

Any wastes containing more than one hundred (100) parts per million by weight of fats, oils or greases.

L. 

Any wastes from gasoline or diesel engine cleaning operations.

M. 

Paints, paint solvents or paint wastes.

N. 

Any plating bath wastes, sulfides, formaldehyde and carbide wastes.

O. 

Wastes containing over ten (10) parts per million hydrogen sulfide, sulfur dioxide, nitrous oxide or any halogen.

P. 

Substances having a flash point lower than one hundred eighty-seven degrees Fahrenheit (187º F.).

Q. 

Materials having characteristics in excess of the following limits:

	Substance	Limit (milligrams per liter)
	5-day BOD (maximum)	300.0
	Suspended solids	400.0
	Chlorine demand (30 minutes)	10.0
	Cadmium	0.8
	Chromium (trivalent)	4.2
	Chromium (hexavalent)	1.0
	Copper	1.0
	Nickel	3.0
	Zinc	1.2
	Cyanide	1.0
	Fluoride	5.0
	Phenolics	0.8