No person shall discharge, directly or indirectly, into the POTW, wastewater containing any of the following substances in concentrations exceeding those specified below on either a daily or an instantaneous basis, except by permit or as provided for in §
138-79. Concentration limits are applicable to wastewater effluents at the point just prior to discharge into the POTW ("end-of-pipe" concentrations).
A. Effluent concentration limits.
[Amended 12-29-2022 by L.L. No. 1-2023]
|
Substance1
|
Allowable Average Daily Concentration
Limit2
(mg/L)
|
Allowable Maximum Instantaneous Concentration
Limit3
(mg/L)
|
Monthly Average
(mg/L)
|
---|
|
Arsenic
|
0.20
|
0.4
|
|
|
Cadmium*
|
0.04
|
0.05
|
0.026
|
|
Chlorine*
|
50.00
|
60.00
|
|
|
Chromium (hex)
|
0.20
|
0.40
|
|
|
Chromium (tot)
|
2.77
|
5.00
|
1.71
|
|
Copper*
|
0.80
|
1.00
|
1.59
|
|
Cyanide (complex)
|
0.40
|
0.50
|
|
|
Cyanide (free)
|
1.60
|
2.00
|
|
|
Fluorides
|
12.00
|
14.00
|
|
|
Gold
|
0.20
|
0.40
|
|
|
Lead*
|
0.26
|
0.69
|
0.26
|
|
Manganese
|
4.00
|
5.00
|
|
|
Mercury
|
0.20
|
0.40
|
|
|
Nickel*
|
4.00
|
5.00
|
2.38
|
|
Phenols, total
|
4.00
|
6.00
|
|
|
Silver*
|
0.20
|
0.40
|
0.24
|
|
Sulfides
|
6.00
|
8.00
|
|
|
Zinc*
|
1.20
|
1.60
|
1.48
|
|
NOTES:
|
---|
|
*Substances regulated by the City of Middletown.
|
|
1
|
Except for chromium (hex), all concentrations
listed for metallic substances shall be as total metal, which shall
be defined as the value measured in a sample acidified to a pH value
of 2 or less, without prior filtration.
|
|
2
|
As determined on a composite sample taken from
the user's daily discharge over a typical operational and/or production
day.
|
|
3
|
As determined on a grab sample taken from the
user's discharge at any time during the daily operational and/or production
period.
|
B. Any liquid or vapor having a temperature higher than
140º F. (60º C.) or in such quantities that the temperature
at the pump station influent exceeds 104º F. (40º C.).
C. Any water or waste containing fats, wax, grease or
oils, whether emulsified or not, in excess of 100 mg/L or containing
substances which may solidify or become viscous at temperatures between
32º F. and 150º F. (0º C. to 65º C.).
D. Any waters or wastes containing strong acid iron pickling
wastes or concentrated plating solutions, whether neutralized or not.
E. Any waters or wastes containing a toxic or poisonous
substance in sufficient quantity to injure or interfere with any sewage
treatment process, constitute a hazard to humans or animals, or create
any hazard in the receiving waters of the sewage treatment plant.
F. Any waters or wastes containing phenols or other taste-
or odor-producing substances, in such concentrations exceeding limits
which may be established by the Town as necessary, after treatment
of the composite sewage, to meet the requirements of the state, federal
or other public agencies of jurisdiction for such discharge to the
receiving waters.
G. Any radioactive wastes or isotopes of such half-life
or concentration which exceed limits established by the Town in compliance
with applicable state or federal regulations.
H. Any waters or wastes having a pH in excess of 9.0
or less than 5.5.
I. Materials which exert or cause:
(1) Unusual concentrations of inert suspended solids such
as, but not limited to, Fullers earth, lime slurries and lime residues,
or of dissolved solids such as, but not limited to, sodium chloride
and sodium sulfate.
(2) Any odor or color exceeding concentration limits which
may be established by the Town for purposes of meeting the Town's
National Pollutant Discharge Elimination System permit.
(3) Unusual BOD, chemical oxygen demand or chlorine requirements
in such quantities as to constitute a significant load on the sewage
treatment works.
(4) Unusual volume of flow or concentration of wastes
constituting "slugs," as defined herein.
J. Other substances which may be limited are:
(1) Alkanes, alkenes and alkynes.
(2) Aliphatic and aromatic alcohols and acids.
(3) Aliphatic and aromatic aldehydes and ketones.
(4) Aliphatic and aromatic esters.
(5) Aliphatic and aromatic halogenated compounds.
(6) Aliphatic and aromatic nitro, cyano and amino compounds.
(7) Aluminum, antimony, barium, beryllium, bismuth, bromine
chlorides, cobalt, iodine, iron, lead, molybdenium, selenium, sulfates,
tin, titanium, vanadium.
(10)
Chemical compounds which, upon acidification,
alkalinization, oxidation or reduction, in the discharge or admixture
with wastewater and its components in the POTW, produce toxic, flammable,
or explosive compounds.
(11)
Pesticides, including algicides, fungicides,
herbicides, insecticides, rodenticides.
(13)
Polyaromatic and polynuclear hydrocarbons.
(14)
Total toxic organics, TTO, as defined in 40
CFR 433.11.
(15)
Toxic organic compounds regulated by federal
pretreatment standards.
(16)
Unsaturated aliphatics, including those with
an aldehyde, ketone or nitrate functional group.
(17)
Viable pathogenic organisms from industrial
processes or hospital procedures.
The System Operator shall have the authority
to copy any record related to wastewater discharges to the POTW.
Grease, oil, and sand interceptors shall be provided as they are necessary for the proper handling of wastewater containing excessive amounts of grease, flammable substances, sand, or other harmful substances, except that such interceptors shall not be required for private living quarters or living units except as provided in §
138-77B(2). Grease interceptors shall be installed in all commercial kitchen facilities serving at a minimum of one large fueling per month. All interceptors shall be of a type and capacity approved by the System Operator in consultation with the Town Engineer and shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned, and repaired regularly, as needed, by the owner, at his expense.
The Town Board may reject a user's wastewater, on recommendation of the System Operator, when it is has been determined that the wastewater contains substances or possesses characteristics which have a deleterious effect on the POTW and its processes or on the receiving water or which constitute a public nuisance or hazard. See §
138-101.