A user shall not introduce into the POTW any pollutant(s) which cause pass-through or create an interference with the operations of the POTW. These general prohibitions and the specific prohibitions in § 340-12 of this article apply to all users introducing pollutants into a POTW whether or not the user is subject to other National Pretreatment Standards or any other national, state or local pretreatment standards or requirements.
A. 
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 140º F. (60º C.) using the test methods specified in 40 CFR 261.21. Materials prohibited from discharge include, but are not limited to: gasoline, kerosene, ethers, alcohols, carbides, hydrides, sulfides and any other substance which the city, the state or the EPA has determined to be a fire hazard or other hazard to the POTW;
(2) 
Solid or viscous substances in amounts which may cause obstruction to the flow in a sewer or otherwise interfere with the operation of the POTW, but in no case solids greater than 1/2 inch or 1.27 centimeters in any dimension;
(3) 
Any wastewater having a pH less than 6.0 SU or greater than 12 SU, or wastewater having any other corrosive property capable of causing damage or hazard to structures, equipment or POTW personnel;
[Amended 4-5-2011 by L.L. No. 5-2011, approved 4-19-2011]
(4) 
Pollutants, including oxygen demanding 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;
(5) 
Wastewater having a temperature that will inhibit biological activity in the treatment plant resulting in interference, but in no case wastewater which causes the temperature at the point of entry into the treatment plant to exceed 104º F. (40º 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, except at discharge points designated by the City Engineer in accordance with Article III of this chapter;
(9) 
Sludges, screenings or other residues from the pretreatment of industrial wastes;
(10) 
Medical wastes, except as specifically authorized by the City Engineer in a wastewater discharge permit;
(11) 
Wastewater causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test; or
(12) 
Detergents, surface-active agents or other substances which may cause excessive foaming in the POTW.
B. 
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.
The limitations set forth in § 340-18 of this chapter may be amended as required in consideration of changing industrial flows, changed SPDES permit limitations, new sludge disposal options and based on the current knowledge of the effect of pollutant discharges. Any wastewater discharge permits in force at the time of modifications of limitations shall be revised accordingly.
No sewer user shall under any circumstances ever increase the use of process water or in any other way attempt to dilute a discharge as a partial or complete substitute for adequate treatment in order to achieve compliance with a pretreatment standard.
All users of the City of Kingston POTW shall be required to provide prior notification to the City Engineer and be subject to review and approval before the new introduction of wastewater constituents or of any substantial change in the volume or the character of the wastewater constituents being introduced into the POTW and as further defined in § 340-21 of this chapter.
All users of the City of Kingston POTW shall comply with all standards and requirements of the Act and all standards and requirements promulgated pursuant to the Act, as well as the National Categorical Pretreatment Standards found in 40 CFR Chapter 1, Subchapter N, Parts 405 through 471, and any subsequent amendments thereto, which are hereby incorporated into this chapter. The city will regularly review federal regulations and amend and adapt this chapter as necessary to reflect new or revised categorical standards and strengthen enforceability.
Grease, oil and sand interceptors shall be provided when, in the opinion of the City Engineer, they are necessary for the proper handling of wastewater containing excessive amounts of these or other harmful substances; except that such interceptors shall not be required for private living quarters or living units. All interceptors shall be of a type and capacity approved by the City Engineer and shall be located so as to be easily accessible for cleaning and inspection. All such interceptors shall be inspected, cleaned and repaired regularly as needed by the owner, at his own expense.
[Amended 4-4-2000 by L.L. No. 3-2000, approved 4-29-2000; 9-5-2007, approved 9-8-2007]
A. 
No person shall discharge directly or indirectly into the City sewer system wastewater containing any of the following substances in concentrations exceeding those specified below on either a daily or instantaneous basis. Concentration limits are applicable to wastewater effluents at a point just prior to discharge into the City sewer system. Local discharge limits shall be as follows:
[Amended 4-5-2011 by L.L. No. 5-2011, approved 4-19-2011]
Limits in Toxic Substances In Sewage at Point of Entry Into Municipal Systems
(All limits are milligrams per liter, unless otherwise noted)
Substance
Effluent Concentration Instantaneous Maximum(mg/l)
Antimony
11.0
Arsenic
1.0
Cadmium
0.3
Chromium
3.4
Copper
0.6
Cyanide
2.4
Grease and oil
100
Lead
1.5
Mercury
0.3
Nickel
0.9
Silver
0.8
Xylenes (TOT)
4.3
Zinc1
0.14
Note:
1The City may grant an individual user a separate zinc permit level, as described in § 340-18B and C below.
B. 
Industrial discharge limits.
(1) 
The City Engineer and/or Pretreatment Coordinator shall allocate quantities of the following substances, on a concentration basis, to industrial users, as listed in the individual industrial user permits. All other constituents are to be discharged at the levels shown above in Subsection A. All allocations shall be made at the maximum permitted mass loading of each contributory industrial user to ensure the maximum allowable industrial loading for each parameter is cumulatively not exceeded. The maximum allowable industrial loading to the wastewater treatment facility, as identified on the following table for each parameter, shall not be exceeded through cumulative allocation.
Parameter
Maximum Allowable Industrial Loading to the Wastewater Treatment Facility
(lb/day)
BOD
600
TSS
3,100
Zn
0.79
(2) 
All concentrations listed in individual industrial user permits 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 less than two SU without prior filtration.
(3) 
Each contributory industrial user's individual permit will define the user's specific maximum allowable concentration limit in mg/l. The individual mass contribution from each discharger used to calculate the cumulative allocation will be calculated as:
Concentration (in mg/l) x industrial contributory maximum permitted flow
(in MGD) x 8.34 = mass loading (lb/day)
C. 
The maximum allowable industrial loading for each parameter identified in Subsection B of this section shall be allocated to industrial users as follows:
(1) 
At a minimum, each permitted contributory industrial user shall be guaranteed the maximum instantaneous effluent concentration for each parameter as delineated in § 340-18A. Industrial users cannot discharge above the maximum instantaneous effluent concentration for zinc without permit authorization.
(2) 
The City may distribute the remaining capacity of the maximum allowable industrial loading to permitted contributory industrial users as a concentration-based limit based on the City's discretion. All concentration limits allocated, in excess of the maximum instantaneous effluent concentration delineated in § 340-18A, shall be allocated at the industrial users maximum permitted flow. The City shall consider.
(a) 
The needs of the industrial users;
(b) 
Historical discharge trends;
(c) 
Past pollution control efforts of each industrial user as compared to other industrial users discharging the same substance;
(d) 
Potential for growth in the POTW service area;
(e) 
The potential for more restrictive regulatory requirements to be placed on the POTW discharge or sludge disposal method; and
(f) 
Treatability of the substance.
(3) 
At no time can the City distribute a total cumulative amount of any parameter identified in Subsection B of this section greater than the maximum allowable industrial loading.
(4) 
To ensure the maximum allowable industrial loading for each parameter is not violated, the City shall, on a continuing basis, evaluate each industrial users flows and pollutant levels to assess whether a modification of its discharge permit must be undertaken.
D. 
Nothing in this chapter shall be construed to relieve any industrial user from its obligation to comply with applicable Federal Categorical Pretreatment Standards and discharge permit conditions.
E. 
Limitations on wastewater strength outlined above may be supplemented with more stringent limit's when:
(1) 
The limitations of this chapter are not sufficient to protect the operation of the POTW, or to protect the treatment works structures or sewers, or to provide adequate safety to the POTW or City employees.
(2) 
The limitations of this chapter are not sufficient to enable the treatment facility to comply with the water quality standards or effluent limitations specified in the POTW 's State Pollutant Discharge Elimination System (SPDES) permit.
(3) 
In the event more stringent limitations are required, all permit holders shall be notified in writing a minimum of 30 days in advance of the effective date. Discharge permits will then be modified to reflect the more stringent limitations.