Pursuant to North Shore City District Bylaw 2000 (Part 9, Trade Waste)
SCHEDULE TWO
PROHIBITABLE CHARACTERISTICS AND SUBSTANCES
(A)
(B)
Prohibited Characteristics General
Prohibited Substances
1.
Introduction
Prohibited characteristics are present if their concentration exceeds background
levels. The background level in relation to any substance means the extent to
which that substance is present (if at all) in the municipal water supply used on the
trade premises, or in any other water supply that is approved by the NSCC for the
purpose of discharging waste.
(A) Prohibited Characteristics General
2.1
Any discharge has prohibited characteristics if it has any solid liquid or gaseous
matters or any combination or mixture of such matters, which by themselves or in
combination with any other matters will immediately or in the course of time:
a)
b)
c)
d)
e)
f)
g)
Interfere with the free flow of sewage in the wastewater system, or
Damage any part of the wastewater system, or
In any way, directly or indirectly, cause the quality of the effluent or residual
Biosolids and other solids from any wastewater treatment plant in the
catchment to which the waste was discharged to breach the conditions of a
consent issued under the Resource Management Act 1991, or water right,
permit or other governing legislation, or
Prejudice the occupational health and safety risks faced by sewerage
workers, or
After treatment be toxic to fish, animals or plant life in the receiving waters,
or
Cause malodorous gases or substances to form which are of a nature or
sufficient quantity to create a public nuisance, or
Have a color or coloring substance that causes the discharge of any
wastewater treatment plant to receiving waters to be colored.
2.2
A discharge has prohibited characteristics if it has any characteristic, which exceeds
the concentration, or other limits specified in Schedule unless specifically approved
for that particular consent.
2.3
A discharge has a prohibited characteristic if it has any amount of:
a)
b)
c)
d)
Harmful solids, including dry solid wastes and materials which combine
with water to form a cemented mass;
Liquid, solid or gas which could be flammable or explosive in the
wastes, including oil, fuel, solvents calcium carbide, and any other material
which is
capable of giving rise to fire or explosion hazards either
spontaneously or in combination with sewage.
Asbestos
The following organometallic compounds:
• Mercury (as organic compounds)
e)
f)
(B)
• Cadmium (as organic compounds)
• Tin (as tributyl and other organotin compounds)
• Chromium (as organic compounds)
Any organochlorine pesticides;
Genetic wastes, as follows:
• All wastes that contain or are likely to contain genetically altered
material from premises where the genetic alteration of any material is
conducted.
• Any health care waste covered by NZS 4304 or any pathological or
histological wastes.
• Radioactivity levels in excess of National Radiation Laboratory
guidelines
Prohibited Substances
GROUP 1 SUBSTANCES
Injurious substances - sewerage system
A non-exhaustive list of wastes the discharge of which is restricted primarily
because of their injurious effects on the sewerage system
GROUP 2 SUBSTANCES
Injurious substances - effluent and sludge
A non-exhaustive list of wastes the discharge of which is restricted primarily
because of their injurious effects in effluent and sludge.
GROUP 3 SUBSTANCES
Noxious Matters - sewerage system
A non-exhaustive list of wastes the discharge of which is prohibited primarily
because of their injurious effects on the sewerage system.
GROUP 4 SUBSTANCES
A non-exhaustive list of wastes the discharge of which is prohibited primarily
because of their injurious effects in effluent and sludge.
MAXIMUM CONCENTRATION
The maximum concentration (“max. Concentration”) of certain substances or
combinations of substances, is stated in milligrams per litre (“mg/l”).
GROUP 1 SUBSTANCES
Injurious Substances - Sewerage System
(A non-exhaustive list of wastes the discharge of which is restricted primarily
because of their injurious effects on the sewerage system)
1.
Solvents and organic liquids with low solubility in water
Any solvent or organic liquid with low solubility in water, to the extent that it is
unavoidably either dissolved in water or emulsified, and provided no floating
layer of the substance is present in the discharge, including the following
substances, all of which are identified as toxic substances:
(1)
Halogenated Aliphatic Hydrocarbons, including:
1,1,1-Trichloroethane (methyl chloroform)
1,1,2,2-Tetrachloroethane
1,1,2-Trichloroethane
1,1-Dichloroethane (ethylidine chloride)
1,1-Dichloroethene (vinylidine chloride)
1,2-Dichloroethane (ethylene dichloride)
1,2-Dichloropropane
1,2-Dichloropropene
1,2-trans-Dichloroethene
Bromodichloromethane
Bromomethane (methyl bromide)
Chloroethane (ethyl chloride)
Chloroethene (vinyl chloride)
Chloromethane (methyl chloride)
Dibromochloromethane
Dichlorodifluromethane
Dichloroethylenes
Dichloromethane (methylene chloride)
Halomethanes
Hexachlorobutadiene
Hexachlorocyclopentadiene
Hexachloroethane
Pentachloroethane
Tetrachloroethene (perchloroethylene)
Tetrachloromethane (carbon tetrachloride)
Tribromomethane (bromoform)
Trichloroethene
Trichlorofluromethane
Trichloromethane (chloroform)
(2)
Halogenated Ethers, including:
2-Chloroethyl vinyl ether
4-Bromophenyl phenyl ether
4-Chlorophyenyl phenyl ether
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (chloromethyl) ether
(3)
Monocyclic Aromatics, including:
1,2,4-Trichlorobenzene
1,2-Dichlorobenzene (o-Dichlorobenzene)
1,3-Dichlorobenzene (m-Dichlorobenzene)
4-Dichlorobenzene (p-Dichlorobenzene)
Benzene
Chlorinated benzenes
Chlorobenzene
Ethylbenzene
Nitrobenzene
Toluene
Xylene
(4)
Phthalate Ester, including:
Di-n-butylphthalate
Diethylphthalate
Diisooctylphthalate
Dimethylphthalate
(5)
Monomers, including:
Acrylonitrile
Acrolein
Styrene
(6)
Miscellaneous
Isophorone
2.
Other Organic Compounds
Any organic compound (not included in Clause 1 of Group 1) which:
(ii) by means of its miscibility, solubility or emulsifiability in water gives
concentration levels which allow toxic or flammable vapors to
(iii) accumulate in the sewer system; or
(iv) gives rise to occupational health and safety risks to sewer workers;
where either the concentration of the substance in the discharge does not
exceed the individual maximum concentration limit in milligrams per litres
set out in respect of that substance in this clause, or the concentration of any
combination of substances to which this clause applies in the discharge does
not exceed the maximum specified in this clause in respect of that
combination including:
Substance
(i)
Max. Concentration
(mg/l)
Liquids
Acetone
Acetonitrile
Diethylether
Dioxane
Formaldehyde1
Methanol
Methyl acetate
Methyl ethyl ketone
Pyridine
5,000
1,000
0
1,000
1,000
5,000
500
500
100
Maximum combined concentration of any or all the substances, specified in this
subclause - 5,000 mg/l.
(ii)
Ethanol
(iii)
The following solids all of which are identified as toxic substances:
Substance
Acenaphthene
Acenaphthylene
Benzo(ghi) perylene
Benzo(k) fluoranthene
Fluoranthene
Fluorene
Naphthalene
20,000
Max. Concentration
(mg/l)
50 mg/l as a total of these
substances
Pyrene
(iv)
The following solids with explosive properties all of which are identified as toxic
substances:
2,4-Dinitro-o-cresol
2,4-Dinitrophenol
2,4-Dinitrotoluene
2,6-Dinitrotoluene
2-Nitrophenol
4,6-Dinitro-o-cresol
4-Nitrophenol
Dinitrotoluene
(v)
The following nitrosamines, all of which are identified as toxic substances:
Di-n-propyl nitrosamine
Dimethyl nitrosamine
Diphenyl nitrosamine
Nitrosodibutylamine N
Nitrosodiethylamine NO
Nitrosopyrrolidine N
3.
Emulsified oils
Emulsified oils, fat and grease which:
Do not exceed 100 mg/l as extractable matter, determined by tests using
petroleum ether; and
(ii) Are stable either in the pH range of 6 to 10 at a temperature of 15°C or in
contact with sewage.
(i)
4.
Other Substances
(a)
Cyanide compounds, all of which are identified as toxic substances are restricted
to a maximum concentration limit of 1.0 mg/l, as determined by a weak-acid
dissociable test method.
(b)
Sulphide or compounds releasing hydrogen sulphide on acidification are restricted
to a maximum concentration limit of 5 mg/l (expressed as S), or, in any case
where the receiving sewer provides adequate dilution and there is no risk of
acidification, such limit up to a maximum concentration of 50 mg/l as the Council
may determine in a consent after consulting.
(c)
Oxidized sulphur, being the chemical species known as Sulphate, Sulphite, and
thiosulphates, are restricted to a maximum concentration limit of 500 mg/l
(expressed as Sulphate). However, in a case where the receiving sewer provides
adequate dilution and there is no risk of anaerobic conditions arising, the Council
may determine a higher maximum concentration limit for sulphates after
consulting.
GROUP 2 SUBSTANCES
Injurious substances - effluent and sludge
(A non-exhaustive list of wastes the discharge of which is restricted primarily because of their
injurious effects in effluent or sludge)
The following substances, all of which are, identified as toxic substances:
Substance
(a)
Max. Concentration
(mg/l)
Metals
Antimony
Arsenic
Boron
Cadmium
Chromium 3 (TRI)
Chromium 6 (HEX)
Cobalt
Copper
Lead
Manganese
Molybdenum
Nickel
Selenium
Silver
Thallium
Zinc
(b)
The following phenols (not being Group 4 substances):
2,3,4,6-Tetrachlorophenol
2,4,5-Trichlorophenol
2,4-Dichlorophenol
2,4-Dimethylphenol
2-Chlorophenol
4-Chloro-3-methyl phenol
4-Chlorophenol
Chlorinated phenols
p-Chloro-m-cresol
Phenol
(c)
5
5
25
0.5
5
5
5
5
5
5
5
5
5
2
5
5
The following pesticides (not being Group 4 substances);
2,3-D
Maldison (Malathion)
50
GROUP 3 SUBSTANCES
Noxious matters - sewerage system
(A non-exhaustive list of wastes the discharge of which is prohibited primarily because of
their injurious effects on the sewerage system)
(a)
(b)
(c)
Any waste at a temperature exceeding 50°C.
Any waste with a pH of less than 6 or more than 10
The following solids:
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(d)
Dry solid wastes, including dry solid wastes converted to liquid wastes, unless
their conversion is an integral part of the occupier’s manufacturing process;
Solids with a maximum dimension greater than 30mm;
Solids with a quiescent settling velocity greater than 50mm/minute;
Fibrous materials, including rope, cloth, plastic tape and similar materials;
Sheet film materials;
Materials, which combine with, water to form a cemented mass.
Any solvent or organic liquid defined in Group 1 of this Schedule which:
Is dissolved or in the form of an emulsion (unless it was dissolved or emulsified
unavoidably); or
(ii) Is in the form of floating layer.
(i)
(e)
Flammable material, including:
Petroleum products
Calcium carbide
Any other material, which is capable of giving rise to fire or explosion, hazards
either spontaneously or in combination with sewage.
(f)
Any oil or grease, which is in the form of floating layer in water.
(g)
Emulsified oil, fat and grease not being a Group 1 substance.
GROUP 4 SUBSTANCES
Noxious matters - effluent and sludge
(A non-exhaustive list of wastes the discharge of which is prohibited primarily because of
their injurious effects in effluent and sludge)
(a)
Asbestos
(b) The following Metals:
Beryllium
Mercury
Tin (as tributyl and other organotin compounds)
Chromium (as organic compounds)
(c)
The following Phenols not being Group 2 substances:
2,4,6-Trichlorophenol
Pentachlorophenol
(d) The following Pesticides not being Group 2 substances;
(*)
(e)
2,4,5-T*
Aldicarb (Temik)
Aldrin*
Azinphos methyl (Gusathion)
Camphechlor (Toxaphene)*
Chlordane
Chlorpyriphos (Lorsban)
DDT (DDE)*
Demeton-s-methyl (Metasystox)
Dieldrin*
Endosulfan (Malix, Thiodan, Endosulfan Sulphate)
Endrin*
Heptachlor*
Lindane
Methoxychlor*
Mirex*
Parathion*
Parathion-methyl (Folidol)
TDE
= Not registered for use in NZ, as at 26 March 1991
Chlorinated organic compounds, including:
3,3’-dichlorobenzidine
Bis(chloromethyl) ether
Hexachlorobenzene
(f)
PCB’s and related compounds, including:
Chloronaphthalenes
(g) Polychlorinated dibenzo-p-dioxin and its isomers
(h) Polychlorinated dibenzofurans
(i)
Polycyclic Aromatic Hydrocarbons (or Polynuclear Aromatic Hydrocarbons), as
follows:
Anthracene
Benzo(a) anthracene
Benzo(a) pyrene
Benzo(b) fluoranthene
Chrysene
Dibenzo(a) anthracene
Ideno (1,2,3-c,d) pyrene
Phenanthrene
(j)
Miscellaneous compounds, as follows:
1,2-diphenylhydrazine (hydrazobenzene)
Benzidine (carcinogen)
(k) Genetic wastes, as follows:
All wastes from premises where the genetic alteration of any material is
conducted.