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Township of Upper Gwynedd, PA
Montgomery County
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Table of Contents
Table of Contents
A. 
No user shall contribute or cause to be contributed, directly or indirectly, any pollutant or wastewater which will interfere with the operation or performance of the POTW or which causes pass-through. These general prohibitions apply to all such users of a POTW, whether or not the user is subject to National Categorical Pretreatment Standards or any other national, state or local pretreatment standards or requirements. A user may not contribute the following substances to any POTW:
[Amended 6-30-2008 by Ord. No. 2008-10]
(1) 
Any liquids, solids or gases which, by reason of their nature or quantity, are or may be sufficient, either alone or by interaction with other substances, to cause fire or explosion, including but not limited to waste streams with a closed-cup flash point of less than 140° F. (60° C.) using the test methods specified in 40 CFR 261.21 or which are, or may be, injurious in any other way to the POTW or to the operation of the POTW. At no time shall two successive readings on an explosion hazard meter at the point of discharge into the system (or at any point in the system) be more than 5% nor any single reading over 10% of the lower explosive limit (LEL) of the meter. Prohibited materials include, but are not limited to, gasoline, kerosene, naphtha, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromates, carbides, hydrides and sulfides and any other substance which the Authority, the state or the EPA has notified the user is a fire hazard or a hazard to the system.
(2) 
Solid or viscous substances which may cause obstruction to the flow in a sewer or other interference with the operation of the wastewater treatment facilities, such as but not limited to grease, garbage with particles greater than 1/2 inch in any dimension, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dust, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, wastepaper, wood, plastics, gas, tar, asphalt residues, residues from refining or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes.
(3) 
Any wastewater having a pH less than 6.0 or greater than 9.0 or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment and/or personnel of the POTW, unless as otherwise specified in a permit.
(4) 
Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction with other pollutants, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a toxic effect in the receiving waters of the POTW, or exceed the limitation set forth in a categorical pretreatment standard. A toxic pollutant shall include but not be limited to any pollutant identified pursuant to Section 307(a) of the Act.
(5) 
Any noxious or malodorous liquids, gases or solids which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or hazard to life or are sufficient to prevent entry into the sewer for maintenance and repair.
(6) 
Any substance which may cause the POTW's effluent or any other product of the POTW, such as residues, sludges or scums, to be unsuitable for reclamation and reuse or to interfere with the reclamation process. In no case shall a substance discharged to the POTW cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act or any criteria, guidelines or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act, the Clean Air Act, the Toxic Substances Control Act or state criteria applicable to the sludge management method being used.
(7) 
Any substance which will cause the POTW to violate its NPDES and/or state disposal system permit or the receiving water quality standards.
(8) 
Any wastewater with objectionable color not removed in the treatment process, such as but not limited to dye wastes and vegetable tanning solutions.
(9) 
Any wastewater having a temperature which will inhibit biological activity in the POTW treatment plant resulting in interference, but in no case wastewater with a temperature at the introduction into the POTW which exceeds 40° C. (104° F.) or exceeds 65° C. (150° F.) at the point of discharge to the sewer system.
(10) 
Any pollutants, including oxygen demand pollutants (BOD, etc.), released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with the POTW. In no case shall a slug load have a flow rate or contain concentration or qualities of pollutants that exceed for any time period longer than 15 minutes more than five times the average twenty-four-hour concentration, quantities or flow during normal operation.
(11) 
Any wastewater containing any radioactive wastes or isotopes of such half-life or concentration in accordance with applicable state or federal regulations.
(12) 
Any wastewater which causes a hazard to human life or creates a public nuisance.
(13) 
Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin in amounts that will cause interference or pass-through.
(14) 
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.
(15) 
Trucked or hauled pollutants, except at discharge points designated by the Authority or the Township.
B. 
When the Authority determines that a user is contributing to its POTW any of the above-enumerated substances in such amounts as to interfere with the operation of its POTW, the Authority shall:
(1) 
Advise the user of the impact of the contribution on its POTW; and
(2) 
Develop effluent limitations for such user to correct the interference with its POTW.
A. 
Upon the promulgation of the federal categorical pretreatment standards for a particular industrial subcategory, the federal standard, if more stringent than limitations imposed under this Part 5 for sources in that subcategory, shall immediately supersede the limitations imposed under this Part 5. The Township or the Authority shall notify all affected users of the applicable reporting requirements under 40 CFR 403.12.
B. 
Users must comply with the categorical pretreatment standards found at 40 CFR Chapter 1, Subchapter N, Parts 405 to 471.
A. 
The Authority, in accordance with the United States EPA regulations, shall develop and maintain technically based local limits. Local limits shall be developed through the evaluation of the following criteria:
(1) 
Sludge use;
(2) 
National Pollutant Discharge Elimination System (NPDES) limitations;
(3) 
Interference and inhibition; and
(4) 
Worker safety.
B. 
Any violation by a nonresidential user of any such local limit shall be deemed a violation of this Part 5 and shall be subject to the provisions of Articles XI and XII hereof.
State requirements and limitations on discharges shall apply in any case where they are more stringent than federal requirements and limitations or those in this Part 5.
The Authority reserves the right to establish by ordinance more-stringent limitations or requirements on discharges to the wastewater disposal system, if deemed necessary, to comply with the objectives presented in § 155-30 of this Part 5 or as required by the United States Environmental Protection Agency.
No user shall ever increase the use of process water or in any way attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the limitations contained in the federal categorical pretreatment standards or in any other pollutant-specific limitation developed by the Authority or the state.
A. 
Accidental and/or problem discharges. Each user shall provide protection from accidental discharge of prohibited materials or other substances regulated by this Part 5 and from discharges that could cause problems to the operations of the POTW, including any slug loadings. Facilities to prevent accidental or problem discharge of prohibited materials shall be provided and maintained at the owner's or user's own cost and expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the Authority for review by the Authority before construction of the facility. All existing users shall complete such a plan when designated by the Authority. No user who commences contribution to the POTW after the effective date of this Part 5 shall be permitted to introduce pollutants into the system until accidental and/or problem discharge procedures have been approved by the Authority. Review and approval of such plans and operating procedures shall not relieve the industrial user from the responsibility to modify the user's facility as necessary to meet the requirements of this Part 5. In the case of an accidental or problem discharge, it is the responsibility of the user to immediately telephone and notify the POTW of the incident. The notification shall include location of discharge, type of waste, concentration and volume and corrective actions.
B. 
Written notice. Within five days following an accidental or problem discharge, the user shall submit to the Authority a detailed written report describing the cause of the discharge and the measures to be taken by the user to prevent similar future occurrences. Such notification shall not relieve the user of any expense, loss, damage or other liability which may be incurred as a result of damage to the POTW, fish kills, or any other damage to person or property; nor shall such notification relieve the user of any fines, civil penalties, or other liability which may be imposed by this Part 5 or other applicable law.
C. 
Notice to employees. A notice shall be permanently posted on the user's bulletin board or other prominent place advising employees whom to call in the event of accidental or problem discharge. Employers shall ensure that all employees who may cause or suffer such an accidental or problem discharge to occur are advised of the emergency notification procedure.
D. 
The Authority shall evaluate whether each SIU needs an accidental discharge/slug discharge control plan or other action to control slug discharges. The Authority may require any user to develop, submit for approval, and implement such a plan or take such other action that may be necessary to control slug discharges. An accidental/slug discharge control plan shall address, at a minimum, the following:
(1) 
Description of discharge practices, including nonroutine batch discharges;
(2) 
Description of stored chemicals;
(3) 
Procedures for immediately notifying the Authority or the Township of any accidental or slug discharge; and
(4) 
Procedures to prevent adverse impact from any accidental or slug discharge. Such procedures include, but are not limited to, inspection and maintenance of stored areas, the handling and transfer of materials, loading and unloading operations, control of plant site runoff, worker training, the building of containment structures or equipment, measures for containing toxic organic pollutants, including solvents, and/or measures and equipment for emergency response.
[Amended 9-27-2010 by Ord. No. 2010-06; 1-23-2017 by Ord. No. 2017-02; 1-22-2018 by Ord. No. 2018-001]
The following pollutant limits are established to protect pass-through and interference. No person shall discharge wastewater at the point where the wastewater is discharged to the POTW containing parameters in excess of these limits:
Parameter
Daily Maximum
(mg/l)
Average Monthly
(mg/l)
Arsenic, total
0.05
BOD-5
540.0
450.0
COD
1,110.0
922.0
Cadmium, total
0.0032
Chromium, total
1.3
Cyanide, free
0.1
Lead, total
0.03
Mercury, total
0.0004
Nickel, total
0.3
Nitrogen-ammonia
65
54
Oil and grease
100
75.0
pH
6 to 10
6 to 9
Phosphorus, total
12
14
Total dissolved solids (TDS)
3,950
Selenium, total
0.05
Silver, total
0.05
Total suspended solids (TSS)
360.0
300.0
Zinc, total*
0.45
Merck
1.1
Clemens Food Group
0.23
Lehigh Valley Dairies
0.23
Accupac
2.8
Iron, total
22
Phenol
4.7
Total copper*
Merck
0.95
Hatfield
0.20
Lehigh Valley
0.19
Clemens Food Group
0.19
Accupac
0.24
Ammonia
65
54
NOTES:
*
Loadings associated with the overall limits for copper and zinc are mass allocated as interim limits for individual significant industrial users.
A. 
Whenever deemed necessary, the Authority may require users to restrict their discharge during peak flow periods, designate that certain wastewater be discharged only into specific sewers, relocate and/or consolidate points of discharge, separate sewage waste streams from industrial waste streams, and such other conditions as may be necessary to protect the POTW and determine the user's compliance with the requirements of this Part 5.
B. 
The Authority may require any person discharging into the POTW to install and maintain, on its property and at its expense, a suitable storage and flow control facility to ensure equalization of flow. An individual wastewater discharge permit may be issued solely for flow equalization.
C. 
Grease, oil and sand interceptors shall be provided when, in the opinion of the Authority, they are necessary for the proper handling of wastewater containing excessive amounts of grease and oil, or sand, except that such interceptors shall not be required for residential users. All interception units shall be of a type and capacity approved by the Authority and shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned and repaired by the user at its expense.
D. 
Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter at the user's expense.