The following described substances, materials, waters, or wastes
shall be limited in discharge to the municipal sewerage system to
concentrations or quantities which will not harm either the sewers,
wastewater treatment processes or equipment, will not have an adverse
effect on the receiving stream, and will not otherwise endanger life,
limb, or public property or constitute a nuisance. The Board of Selectmen
may set more restrictive limitations that those established herein
to meet the above objectives. In forming an opinion as to acceptability,
the Board of Selectmen will give consideration to such factors as
the quantity of subject waste in relation to flows and velocities
in the sewers, materials of construction of the sewers, the wastewater
treatment processes employed, capacity of the wastewater treatment
plant, and other pertinent factors. The limitations or restrictions
on materials or characteristics of waste or wastewaters discharged
to the sanitary sewer which shall not be violated without approval
of the Board of Selectmen include but are not limited to the following:
A. Wastewater sufficiently hot to cause the influent at the wastewater
treatment facilities to exceed 104° F. (40° C.).
B. Wastewater containing more than 25 milligrams per liter of petroleum
oil, nonbiodegradeable cutting oils, or product of mineral oil origin.
C. Any waters or wastes containing toxic or poisonous solids, liquids,
or gases in sufficient quantity, either singly or by interaction with
other wastes, to injure or interfere with any sewage treatment process.
D. Any garbage that has not been properly shredded (see the definition of "properly shredded garbage" in §
398-1). Garbage grinders may be connected to sanitary sewers from homes, hotels, institutions, restaurants, hospitals, catering establishments, or similar places where garbage originates from the preparation of food in kitchens for the purpose of consumption on the premises or when served by caterers.
E. Any waters or wastes containing heavy metals, solvents, and similar
objectionable or toxic substances to such degree that any such material
discharged to the public sewer exceeds the limits established by the
Board of Selectmen, the New Hampshire Department of Environmental
Services or the United States Environmental Protection Agency for
such materials.
F. Any water or wastes containing phenols or other taste- or odor-producing
substances, in such concentrations exceeding limits which may be established
by the Board of Selectmen as necessary, after treatment of the composite
sewage, to meet the requirements of the state, federal, or other public
agencies of jurisdiction for such a discharge.
G. Any radioactive wastes or isotopes of such half-life or concentration
as may exceed limits established by the Board of Selectmen in compliance
with applicable state or federal regulations.
H. Materials which exert or cause:
(1) Unusual concentrations of inert suspended solids (such as, but not
limited to, fuller's earth, lime slurries, and lime residues) or of
dissolved solids (such as, but not limited to, sodium chloride and
sodium sulfate).
(2) Excessive discoloration and dyes which cannot be removed by the treatment
facility.
(3) Unusual volume of flow or concentration of wastes constituting slug discharges. Any unusual concentrations, spills, or slugs (see the definition of "slug" in §
398-1) shall be reported immediately to the Director of Public Works. A written report shall be sent by the user to the Board of Selectmen within five days of the incident describing the reason for the spill and remedial action taken and the steps taken to prevent its recurrence.
I. Waters or wastes containing substances which are not amenable to
treatment or reduction by the wastewater treatment processes employed,
or are amenable to treatment only to such a degree that the wastewater
treatment plant effluent cannot meet the requirements of other agencies
having jurisdiction over discharge to the receiving waters.
J. Any waters or wastes which, by interaction with other water or wastes
in the public sewer system, release obnoxious gases, form suspended
solids which interfere with the collection system, or create a condition
deleterious to structure and treatment processes.
K. Any waters or wastes having a pH in excess of 9.5 or lower than 5.5.
L. Any waters or wastes having a five-day biochemical oxygen demand
greater than 250 milligrams per liter.
M. Any waters or wastes containing more than 300 milligrams per liter
suspended solids.
N. Any waters or wastes containing floatable oils, fats or grease.
O. Any waters or wastes containing in excess of the following local
limits:
|
Arsenic
|
0.10 mg/l
|
|
Cadmium
|
0.69 mg/l
|
|
Chromium (total)
|
2.77 mg/l
|
|
Copper
|
3.38 mg/l
|
|
Cyanide
|
Total 1.20 mg/l
|
|
Fluoride
|
20.00 mg/l
|
|
Lead
|
0.69 mg/l
|
|
Mercury
|
0.01 mg/l
|
|
Nickel
|
3.98 mg/l
|
|
Oil and grease
|
200.00 mg/l
|
|
pH
|
5.5 to 9 units
|
|
Sulfates
|
250.00 mg/l
|
|
Sulfides
|
1.00 mg/l
|
|
Silver
|
0.43 mg/l
|
|
Zinc
|
2.61 mg/l
|
|
Total toxic organics(TTO)
|
5.00 mg/l
|
All industrial waste shall be pretreated in accordance with
federal and state regulations and this chapter to the extent required
by applicable National Categorical Pretreatment Standards, state pretreatment
standards or standards established by the Board of Selectmen, whichever
are more stringent. Where pretreatment or flow-equalizing facilities
are provided or required for any waters or wastes, they shall be maintained
continuously in satisfactory and effective operation by and at the
expense of the owner(s).
The Town shall determine the quantity and quality of all industrial
wastes which can be properly taken into the sewerage system in addition
to the sanitary sewage from the Town, and the Town may regulate the
flow of industrial wastes into the sewerage system by separate industrial
user agreement(s) approved by the Board of Selectmen.
All measurements, tests, and analyses of the characteristics
of waters and wastes to which reference is made in this chapter shall
be determined in accordance with the latest edition of Standard Methods
for Examination of Water and Wastewater, published by the American
Public Health Association, or with the EPA-approved methods published
in the Code of Federal Regulations, Title 40, Part 136 (40 CFR 136).
Sampling methods, locations, times, durations, and frequencies are
to be determined on an individual basis subject to approval by the
Board of Selectmen.
No statement contained in this article shall be constructed
as preventing any special agreement or arrangement between the Town
and any industrial concern whereby an industrial waste of unusual
strength or character may be accepted by the Town, provided that such
agreements do not contravene any requirements of existing federal
or state laws, and/or regulations promulgated thereunder, are compatible
with any user charge system in effect, and do not waive applicable
National Categorical Pretreatment Standards.
Neither domestic septic tank waste (septage) nor industrial
septic tank waste (industrial septage) will be accepted into the Salem
waste collection system. Septage and industrial septage may be discharged
at the GLSD treatment facility in North Andover, Massachusetts, subject
to prior approval by and specific regulations of the GLSD. Holding
tank wastes may be accepted into the Salem collection system provided
that such wastes do not contain toxic pollutants or materials and
provided that such discharge does not result in violation of this
chapter or other agreements entered into by the Town. Fees for dumping
holding tank wastes will be established as part of the user charge
system. Authorized Town employees, acting on behalf of the Town and
its Department of Public Works, shall have authority to limit the
disposal of such wastes, if such disposal would interfere with proper
operation of collection and disposal facilities. Procedures for the
disposal of such wastes shall be in conformance with the operating
policy of the Town's Public Works Department, and disposal shall be
accomplished under its supervision unless specifically permitted otherwise.
Permits for discharge of holding tank wastes shall be under the jurisdiction
of the Department of Public Works and subject to prior review and
approval by the GLSD. Such review by GLSD shall be made on the basis
of this chapter. It shall be illegal to meet requirements of this
chapter by diluting wastes in lieu of proper pretreatment.