No person shall discharge or cause to be discharged any stormwater, surface water, groundwater, roof runoff, subsurface drainage, cooling water or unpolluted industrial process waters to any sanitary sewer.
A. 
Stormwater and all other unpolluted drainage shall be discharged to drains or such sewers as are specifically designated as storm sewers or to a natural outlet approved by the Town.
B. 
Industrial cooling water or unpolluted process water requires an NPDES permit prior to being discharged to a storm sewer or natural outlet.
A. 
General prohibitions. No user shall introduce or cause to be introduced into the POTW any pollutant or wastewater which causes pass-through or interference. These general prohibitions apply to all users of the POTW, whether or not they are subject to categorical pretreatment standards or any other federal, state, or local pretreatment standards or requirements.
B. 
Specific prohibitions. No person(s) shall discharge or cause to be discharged any of the following described waters or wastes to any public sewer:
(1) 
Pollutants which create a fire or explosion hazard in the POTW, including but not limited to waste streams with a closed-cup flashpoint of less than 140º F. or 60º C. using the test methods specified in 40 CFR 261.21.
(2) 
Pollutants, including oxygen-demanding pollutants (BOD, etc.), at a flow rate and/or concentration which would cause interference, constitute a hazard to humans or animals, create a public nuisance, exceed any applicable National Categorical Pretreatment Standards, or cause pass-through.
(3) 
Any wastewater having a pH lower than 5.0 or higher than 12.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the wastewater works.
(4) 
Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers or other interference with the proper operation of the wastewater facilities, such as, but not limited to, ashes, bones, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, milk containers, etc., whether whole or ground by garbage grinders.
(5) 
Wastewater sufficiently hot to cause the influent at the wastewater treatment facilities to exceed 104º F. (40º C.) or cause inhibition of biological activity in the POTW or otherwise result in interference.
(6) 
Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass-through.
(7) 
Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute worker health and safety problems.
(8) 
Any trucked or hauled pollutants, except at discharge points designated by the Director.
(9) 
Sludges, screenings, or other residues from the pretreatment of industrial wastes.
(10) 
Medical, pharmaceutical, or radiological wastes, except as specifically authorized by the Director in a wastewater discharge permit.
(11) 
Wastewater causing, alone or in conjunction with other sources, the treatment plant effluent or sludge to fail a toxicity test.
(12) 
Detergents, surface-active agents, or other substances which may cause excessive foaming in the POTW.
(13) 
Any hazardous waste listed or designated under Env-Wm 400.
The following substances, materials, waters, or wastes shall be limited in discharges to municipal systems to concentrations or quantities which will not harm the sewers, wastewater treatment process or equipment; will not have an adverse effect on the receiving stream; or will not otherwise endanger life, limb, or public property or constitute a nuisance. The Director may set limitations lower than the limitations established in the regulations below if, in his opinion, such limitations are necessary to meet the above objectives. In forming his opinion as to the acceptability, the Director 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 process employed, capacity of the wastewater treatment plant, degree of treatability of the waste in the wastewater treatment plant, and other pertinent factors. The Director shall not permit those discharges which are prohibited by § 122-32 of this article. 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 Director are as follows:
A. 
Wastewater containing more than 25 mg/l of petroleum oil, nonbiodegradable cutting oils, or product of mineral oil origin.
B. 
Wastewater containing more than 100 mg/l of oil and grease or floatable oil not limited by Subsection A of this section.
C. 
Any garbage that has not been properly shredded (see the definition of "properly shredded garbage" in § 122-4). 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.
D. 
Any wastewater containing heavy metals, solvents, and similar objectionable toxic substances to such degree that any such wastewater discharged to the public sewer exceeds the limits established by the Town, the Division, the NPDES permit, or the National Categorical Pretreatment Standards, as promulgated by the United States Environmental Protection Agency for such materials.
E. 
Any wastewater containing odor-producing substances exceeding limits which may be established by the Town, the Division, the NPDES Permit, or the National Categorical Pretreatment Standards, as promulgated by the EPA.
F. 
Wastewater containing any radioactive wastes or isotopes as may exceed limits established by Town, state or federal regulations.
G. 
Quantities of flow, concentrations, or both which constitute a "slug" as defined herein.
H. 
Wastewater containing substances which are not amenable to treatment by the wastewater treatment process employed or are amenable to treatment only to such degree that the wastewater treatment plant effluent cannot meet the permitted discharge.
I. 
Any water 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 structures or treatment processes.
A. 
Grease, oil and sand interceptors may be required when, in the opinion of the Director, they are necessary for the proper handling of liquid wastes containing grease or oil in excessive amounts or any flammable waste, sand, or other harmful ingredients. Interceptors may not be required for domestic sanitary sewage. However, interceptors may be required when 12 or more individual living quarters/units are connected to the same common building sewer or when the Director deems that interceptors are required. All interceptors shall be of a type and capacity approved by the Director and shall be located so as to be readily and easily accessible for cleaning and inspection. Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be of substantial construction, watertight and equipped with easily removable covers which when bolted in place shall be gastight and watertight.
B. 
In the maintenance of these interceptors the owner(s) shall be responsible for the proper removal and disposal by appropriate means of the captured material and shall maintain records of the dates and means of disposal which are subject to review by the Director. Any removal and hauling of the collected material not performed by the owner's personnel must be performed by currently licensed waste disposal firms.
Where installed, all grease, oil, and sand interceptors shall be maintained by the owner, at his expense, in continuously efficient operation at all at times. Inspections of such interceptors may be conducted by the Town with sufficient notice to the owner or tenant.
The admission into the public sewers of any waters or wastes having a five-day BOD greater than 300 mg/l, containing more than 300 mg/l of suspended solids, containing any quantity of substances having the characteristics described in § 122-33 or having an average daily flow greater than 2% of the average daily sewage flow of the Town shall be subject to the review and approval of the Director. Where necessary in the opinion of the Director, the owner shall provide, at his expense, such preliminary treatment as may be necessary to reduce the BOD to 300 mg/l and the suspended solids to 300 mg/l, reduce objectionable characteristics or constituents to within the maximum limits provided for in § 122-33, or control the quantities and rates of discharge of such waters or wastes. Plans, specifications, and any other pertinent information relating to proposed preliminary pretreatment facilities shall be submitted for the approval of the Town and of the New Hampshire Water Supply and Pollution Control Division. No construction of such facilities shall be commenced until said approvals are obtained in writing.
Where pretreatment facilities are provided for any water or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner at his expense.
All industrial waste shall be pretreated in accordance with Article X of this chapter.
All measurements, tests and analyses of the characteristics of waters to which reference is made in this chapter shall be determined in accordance with § 122-70J of this chapter. Sampling methods, locations, times, durations and frequencies are to be determined on an individual basis subject to approval by the Director. All industries discharging into a public sewer shall perform such monitoring of their discharge as the Director and/or other duly authorized employees of the Town may reasonably require, including installation, use, and maintenance of monitoring equipment, keeping records and reporting. Records shall be made available upon request by the Director to other agencies having jurisdiction over discharges to the receiving waters.
No statement contained in this article shall be construed 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 for treatment, provided that such agreements do not contradict 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.
It shall be a violation of this chapter to meet its requirements by diluting wastes in lieu of proper pretreatment.
A. 
If any wastewaters are discharged or are proposed to be discharged to the public sewer, which wastewaters contain the substances or possess the characteristics enumerated in § 122-32B of this article or which in the judgment of the Director may have a deleterious effect upon the wastewater facilities, processes, equipment, or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Director may:
(1) 
Reject the wastes;
(2) 
Require pretreatment to an acceptable condition for discharge to the public sewers;
(3) 
Require control over the quantities and rates of discharge; and/or
(4) 
Require payment to cover the added cost of handling and treating the wastes.
B. 
If the Town permits the pretreatment or equalization of waste flows, the design and installation of the pretreatment facilities shall be subject to the review and approval of the Town and the Division and subject to the requirements of all applicable codes, ordinances, regulations and laws. Such facilities shall not be connected until said approval is obtained in writing. Plans and specifications for a proposed pretreatment facility shall be the result of the design of a professional engineer registered in the State of New Hampshire.
The Director may require a user of sewer services to provide information needed to determine compliance with this chapter. Such information may include, but is not limited to:
A. 
The wastewater's discharge peak rate and volume over specified time periods.
B. 
Chemical analyses of wastewaters.
C. 
Information on raw materials, processes, and products affecting wastewater volume and quality.
D. 
Quantity and disposition of specific liquid, sludge, oil, solvent, or other materials adjacent to the sewer and pretreatment facility location.
E. 
A plot plan of sewers on the user's property showing sewer and pretreatment facility location.
F. 
Plans and specifications of wastewater pretreatment facilities.
G. 
Details of systems to prevent and control the losses of materials through spills to the municipal sewer.
H. 
Any other information as provided for in Article X as deemed necessary by the Director.
A. 
Septic tank waste may be introduced into the POTW only at locations designated by the Director and at such times as are established by the Director. Such waste shall not § 122-32A or B or 122-66 of this chapter or any other requirements established by the Town of Derry. Only septic waste haulers licensed by the State of New Hampshire will be permitted to discharge in Derry. Haulers are required to obtain a Derry septage disposal license as well. Licensing fees shall be in accordance with Appendix A, Section IV.[1] The Director may require septic tank waste haulers to obtain local wastewater discharge permits.
[1]
Editor's Note: Appendix A is on file in the office of the Town Clerk.
B. 
The Director shall require haulers of industrial waste to obtain wastewater discharge permits. The Director may require generators of hauled industrial waste to obtain wastewater discharge permits. The Director also may prohibit the disposal of hauled industrial waste. The discharge of hauled industrial waste is subject to all other requirements of this chapter.
C. 
Industrial waste haulers may discharge loads only at locations designated by the Director. No load may be discharged without prior consent of the Director. The Director may collect samples of each hauled load to ensure compliance with applicable standards. The Director may require the industrial waste hauler to provide a waste analysis of any load prior to discharge. Costs for such analyses shall be borne by the waste hauler.
D. 
Industrial waste haulers must provide a waste-tracking form for every load. This form, as detailed in Appendix E,[2] shall include, at a minimum, the name and address of the industrial waste hauler, permit number, truck identification, names and addresses of sources of waste, and volume and characteristics of suspected waste constituents and whether any wastes are RCRA hazardous wastes.
[2]
Editor's Note: Appendix E is on file in the office of the Town Clerk.
E. 
Septage disposal fees must be paid by the hauler in accordance with Appendix A within 30 days of invoice by the Town. Failure to do so may result in the loss of the hauler's disposal license. Outstanding balances over 30 days shall be subject to a finance charge of 1 1/2% per month.