[Ord. No. 227, 9/5/2006]
(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 user shall introduce or cause to be introduced into the POTW the following pollutants, substances or wastewater:
(1) 
Pollutants which create a fire or explosive hazard in the POTW, including, but not limited to, waste streams, with a closed-cup flashpoint of less than 140° F. (60° C.) using the test methods specified in 40 CFR 261.21;
(2) 
Wastewater having a pH less than 6.0 or more than 9.0, or otherwise causing corrosive structural damage to the POTW or equipment;
(3) 
Solid or viscous substances in amounts which will cause obstruction of the flow to the POTW resulting in interference with the proper operation of the POTW. Such substances include, but are not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, bones, rags, feathers, tar, plastic, wood, paunch, manure, butchers' offal, whole blood, bentonite, lye, building materials, rubber, hair, leather, porcelain, china, ceramic wastes, asphalt, paint, waxes, needles or syringes of any type, but in no case solids greater than two inches in any dimension.
(4) 
Pollutants, including oxygen-demanding pollutants (BOD, etc.), released din 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;
(5) 
Wastewater having a temperature greater than 104° F. or lower than 32° F., or which will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the introduction into the treatment plant to exceed 104° F. (40° C.);
(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) 
Trucked or hauled pollutants;
(9) 
Noxious or malodorous liquids, gases, solids, or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or a hazard to life, or to prevent entry into the sewers for maintenance or repair;
(10) 
Wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently impart color to the treatment plant's effluent, thereby violating the Township's NPDES permit. Color (in combination with turbidity) shall not cause the treatment plant effluent to reduce the depth of the compensation point for photosynthetic activity by more than 10% from the reasonably established norm for aquatic life;
(11) 
Wastewater containing any radioactive wastes or isotopes except as specifically approved by the Township in compliance with applicable state or federal regulations;
(12) 
Storm water, surface water, ground water, sump pump discharges, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, noncontact cooling water, and unpolluted wastewater, unless specifically authorized by the Township. Where unauthorized discharge of these waters into the POTW exists, they shall be remedied in a manner approved by the Township within 90 days of receipt of a notice from the Township. In the event such condition is not remedied, the Township shall cause the condition to be remedied at the owner's expense;
(13) 
Sludges, screenings or other residues from the pretreatment of industrial wastes;
(14) 
Medical wastes, except as specifically authorized by the Township in a wastewater discharge permit;
(15) 
Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test;
(16) 
Detergents, surface-active agents, or other substances which may cause excessive foaming in the POTW; or
(17) 
Fats, oils, or greases of animal or vegetable origin in concentrations greater than 100 mg/L.
Pollutants, substances, or wastewater prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the POTW.
[Ord. No. 227, 9/5/2006]
The national categorical pretreatment standards found at 40 CFR Chapter 1, Subchapter N, Parts 405-471 are hereby incorporated.
[Ord. No. 227, 9/5/2006]
No state pretreatment standards exist so, in their place, categorical pretreatment standards are hereby incorporated.
[Ord. No. 227, 9/5/2006]
The following pollutant limits are established to protect against pass through and interference. No person shall discharge wastewater containing in excess of the following instantaneous maximum allowable discharge limits.
Limit
Pollutant
900 mg/L
CBOD5
0.200 mg/L
Cadmium
2.67 mg/L
Chromium
1.00 mg/L
Copper
2.83 mg/L
Cyanide
2.00 mg/L
Lead
0.00 mg/L
Mercury
2.00 mg/L
Nickel
100 mg/L
Oil and grease (petroleum, mineral or vegetable oil products)
2.00 mg/L
Silver
750 mg/L
Total suspended solids
2.55 mg/L
Zinc
0.37 mg/L
Tin
10.00 mg/L
Iron
0.80 mg/L
Phenol
0.025 mg/L
Arsenic
1,500 mg/L
Total dissolved solids
75 mg/L
Ammonia nitrogen
0.09 mg/L
Selenium
The above limits may be revised by resolution of Amity Township Board of Supervisors.
The above limits apply at the point where the wastewater is discharged to the POTW (end of the pipe). All concentrations for metallic substances are for "total" metal unless indicated otherwise. The Township may impose mass limitations in addition to or in place of the concentration-based limitations above.
Deductions will be made from these limited substances equal to the concentrations of each substance that is contained in the potable water supply.
[Ord. No. 227, 9/5/2006]
The Township reserves the right to adopt, from time to time by ordinance or in wastewater discharge permits, such additional rules and regulations as it shall deem necessary and proper relating to connection to and proper operation of the POTW, which rules and regulations shall be construed as a part of this Part.
[Ord. No. 227, 9/5/2006]
The Township reserves the right to enter into special agreements with users setting out special terms under which they may discharge to the POTW. In no case will a special agreement waive compliance with a pretreatment standard or requirement. However, a user may request a net gross adjustment to a categorical standard in accordance with 40 CFR 403.15. A user also may request a variance from the categorical pretreatment standard from the approved authority. Such a request will be approved only if the user can prove that factors relating to its discharge are fundamentally different from the factors considered by EPA when establishing that categorical pretreatment standard. A user requesting a fundamentally different factor variance must comply with the procedural and substantive provisions in 40 CFR 403.13.
[Ord. No. 227, 9/5/2006]
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 a discharge limitation unless expressly authorized by an applicable pretreatment standard or requirement. The Township may impose mass limitations on users who are using dilution to meet applicable pretreatment standards or requirements, or in other cases where the imposition of mass limitations is appropriate.