(a) No user shall discharge or cause to be discharged, either directly or indirectly, any stormwater, surface water, groundwater, roof runoff, subsurface drainage, cooling water or unpolluted industrial process water into the POTW. Any such connections shall be considered illegal and shall be subject to immediate removal by the owner of the premise at the owner's expense. Should the owner fail to remove the connection within ten days after notice, the City shall cause the connection to be removed and the cost thereof shall be billed to the owner of the premise.
(b) Storm waters and all other unpolluted waters shall be discharged to storm sewers, or to a natural outlet approved by the Director.
(c) No sewer or system of sewers shall be constructed within any area outside the City which connects either directly or indirectly to the POTW, until such area, through its governmental unit, has enacted suitable legislation prohibiting any unpolluted waters therefrom and meeting the standards of this chapter. It shall be the responsibility of each governmental unit to enforce the provisions of said legislation.
(d) No person constructing a sanitary sewer, or building sewer, shall leave the same open, unsealed or incomplete in such fashion as to permit storm, surface, or subsurface water, or any material or substance other than sanitary sewage or approved industrial waste to enter such sewer.
(e) Prohibited Discharges. No person shall discharge or cause to be discharged into the POTW any of the following:
(1) Any wastewater having a temperature which will inhibit biological activity in the POTW, resulting in interference, but in no case, causing the POTW Treatment Plant influent to exceed 40°C.
(2) Any waste which:
A. Contains more than 500 mg/L of total oil and grease (1) as determined through applicable analytical techniques. Users which exhibit a total oil and grease concentration above 250 mg/L, but acceptable for discharge into the sanitary sewer system shall be subject to a monthly surcharge pursuant to Section 915.09;
B. Contains substances which may solidify or become viscous at temperatures between 0 and 65 degrees C in the sewer system;
C. Contains oil and grease at concentrations which will cause interference or pass through.
(1) The Director may impose stricter limits on a case by case basis as necessary to ensure proper operation of the sewer collection system and wastewater treatment plant.
(3) Pollutants which:
A. Create a fire or explosion hazard in the POTW, including, but not limited to, wastestreams with a closed cup flashpoint of less than 60 degrees Celsius using the test method specified in 40 CFR 261.21, or
B. Result in the presence of toxic gases, vapors, or fumes in the POTW in a quantity that may cause acute worker health and safety problems.
(4) Garbage that has not been properly shredded.
(5) Any solid or viscous substance capable of causing obstruction to the flow in sewers or other interference with the proper operation of the POTW.
(Ord. 24-2009. Passed 9-8-09.)
(6) Any discharge which exhibits a pH of less than 6.0 S.U. or greater than 11.0 S.U. with the following exception:
The Director, at his/her sole discretion, may grant a variance to a permitted industrial user for the discharge of wastewater to the sanitary sewer system with a pH greater than 11.0 S.U. but less than or equal to 12.0 S.U., under the following conditions:
A. The industrial user agrees to install and operate, at its cost, equipment to continuously monitor and record the pH of the industrial user wastewater at the point where it exits the industrial user's facility (the exit point). The location of the exit point must be approved by the City in writing. The industrial user shall submit such recordings to the pretreatment coordinator within seven (7) days after the end of the month during which the recordings are generated; and
B. The industrial user agrees to pay the City for all costs incurred in televising the receiving sewers at the time of granting the variance and at intervals thereafter as determined by the City; and
C. Industrial users with an average daily flow of less than 25,000 gallons per day may discharge to a pH of 12.0 S.U. for no longer than 30 minutes in a 24 hour period and no more than a total of 12 hours per calendar month or industrial users with an average daily flow of greater than or equal to 25,000 gallons per day may discharge to a pH of 12.0 S.U. for no longer than 15 minutes in a 24 hour period and no more than a total of 6 hours per calendar month.
No pH variance shall be issued for wastewater with a pH less than 6.0 S.U. or greater than 12.0 S.U. Granting of a pH variance to an industrial user shall in no way relieve the industrial user of any liability for damage to and/or the integrity of the receiving sewer. Damage to or deterioration of the receiving sewer due to the pH variance will be the financial responsibility of the industrial user. Any pH variance may be revoked by the Director at any time and for any reason. Each variance is specific to the industrial user and the industrial user's location referred to in the request for variance. pH variances are not transferable or assignable.
(Ord. 50-2016. Passed 10-17-16.)
(7) Any material which will cause the POTW's effluent to become discolored which results in the POTW violating water quality standards.
(8) Trucked or hauled pollutants, including industrial and septic wastes, into any location of the sewerage system or POTW at any time.
(9) Any substance which will cause the POTW to violate terms and conditions in its NPDES permit.
(10) Any wastewater containing any substance in sufficient quantities which causes:
A. Interference with the biochemical processes of the POTW;
B. Pollutants to pass through the POTW into the receiving stream in amounts exceeding NPDES limitations; or
C. Contamination of the POTW's sludge.
(11) Any slugload.
(12) Any unpolluted water including, but not limited to noncontact cooling water.
(13) Any waters or wastes containing suspended solids or dissolved solids of such character and quantity that unusual provision, attention, and expense would be required to handle such materials in the POTW.
(14) Any wastewater containing any radioactive wastes or isotopes of such halflife or concentration as exceed limits established by the NRC in compliance with applicable state or Federal regulations.
(15) 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. (Ord. 24-2009. Passed 9-8-09.)
(f) Specific Pollutant Discharge Limits. When required, the City shall allocate specific pollutant discharge limits to any user or group of users. These limits may include the use of BMP's when indicated. Specific pollutant discharge limits for wastewater containing concentrations of arsenic, cadmium, hexavalent chromium, total chromium, copper, free cyanide, lead, mercury (1), molybdenum, nickel, selenium, silver, and zinc are on record in the Local Limits Technical Justification Report as approved by OEPA and available at the Troy Wastewater Treatment Plant.
(1) Users which exhibit a Mercury concentration of 1 ug/L or greater may be required to perform a source investigation study and perform pollution prevention alternatives to reduce the discharge of Mercury.
(Ord. 6-2018. Passed 2-5-18.)
(g) If any substance described in subsections (e) or (f) hereof is discharged or proposed to be discharged into the POTW, the Director may:
(1) Reject the discharges; and/or
(2) Require a discharger to demonstrate that in-plant improvements and/or pollution prevention will modify the discharge to such a degree as to be acceptable; and/or
(3) Require pretreatment, handling facilities, flow equalization, or other measures necessary to assure compliance with this chapter; and/or
(4) Require a person or local government unit making, causing or allowing the discharge to pay a surcharge to cover the added cost of handling and treating excess loads imposed on the City POTW by such discharge.
(h) If the Director requires pretreatment or equalization of waste flows prior to discharge into the POTW, the plans, specifications and other pertinent data or information relating to such pretreatment or flow control facilities shall be submitted for review and approval. Approval shall in no way exempt the discharge from compliance with any applicable code, ordinance, rule or regulation of the City or any other government unit having jurisdiction. No construction shall commence without written approval. No substantial alterations or additions to such pretreatment or flow control facilities shall be made without written approval of the Director.
(i) Grease, oil and sand interceptors shall be installed when required by the MCGHD. The Director may also require an interceptor to insure compliance with this chapter. Where installed, all interceptors shall be maintained at the owner's expense, to provide continuous efficient operation.
(j) If pretreatment or control of waste flows is required, such shall be maintained continuously in satisfactory and effective operating condition at the owner's expense and shall be subject to the requirements of this chapter, and to periodic inspection by the City. The owner shall maintain suitable operating records and shall submit to the City such summary reports of the character of the influent and effluent as the latter may prescribe. The owner or user shall notify the City immediately of any slug load as defined in Section 915.01(b)(74).
(k) Analytical Procedures. All measurements, tests and analyses of the characteristics of the waste shall be made by or on behalf of the City in accordance with 40 CFR 136 and shall be determined upon suitable samples taken at the control manhole or other location approved by the Director. The particular tests and analyses to be made, the method and frequency of sampling and other specific details for scheduling related thereto shall be established by the Director to meet the requirements of the POTW operation, administrative, and billing procedures. The Director shall be free to alter such scheduling at any time.
(l) No person shall be relieved of his responsibility and shall be liable for any expense, loss or damage occasioned the City due to an accidental discharge. Each user shall provide protection from accidental discharges of prohibited materials or other substances regulated by this chapter at the owner or user's own cost and expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the City for review, and approval before construction of the facility. No user who commences contribution to the City after the effective date of this chapter shall be permitted to introduce pollutants into the system until accidental discharge procedures have been approved by the City. 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 chapter or its subsequent revisions. (Ord. 24-2009. Passed 9-8-09.)
(1) Notification of City. In the case of an accidental discharge, a slug load discharge, changes in operations and/or conditions that could affect the potential of a slug load discharge, or any other discharge that could cause interference or pass through the POTW, it is the responsibility of the user to immediately notify the City of the incident. The notification shall include location of discharge, type of waste, concentration and volume, time, and corrective actions taken to remedy the problem(s). Within five days following an accidental discharge, the user shall submit to the City 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 expense, loss or damage, fines, civil penalties, or other liability which may be imposed.
(Ord. 6-2018. Passed 2-5-18.)
(2) Notification Procedures. 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 an accidental discharge. Employers shall insure that all employees are advised of the emergency notification procedure. The Director shall evaluate at least once during the period covered by each IU Discharge Permit whether a user needs a plan to control slug and accidental discharges as listed at 40 CFR 403.8(f)(2)(v).
(m) No unauthorized person shall maliciously, willfully or negligently break, damage, destroy, deface or tamper with any structure, appurtenance or equipment which is a part of the POTW.
(n) Federal Categorical Pretreatment Standards.
(1) Existing sources shall comply with categorical pretreatment standards, if more stringent than limitations imposed under this chapter, within three (3) years of the date the standard is effective unless a shorter compliance time is specified by USEPA.
(2) Direct dischargers with NPDES permits modified or reissued to provide a variance pursuant to Section 301 (i)(2) of the Act shall be required to meet compliance dates set in any applicable categorical pretreatment standard.
(3) Existing sources which become IUs subsequent to promulgation of an applicable categorical pretreatment standard shall be considered existing IUs except where such sources meet the definition of a new source.
(4) New sources shall install and have in operating condition, and shall start-up all pollution control equipment required to meet applicable pretreatment standards before beginning to discharge. Within the shortest feasible time, but not to exceed ninety days after notice, new sources must meet all applicable pretreatment standards.
(5) Categorical pretreatment standards are required to be met at the end of the regulated process or at the point of discharge from an industrial pretreatment system prior to mixing with any other waste stream and before discharge to the POTW.
(o) Dilution Prohibition. No IU user shall 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 to achieve compliance with a pretreatment standard, or any other pollutant specific limitation.
(p) State or Other Requirements. The most stringent of any discharge limitations shall apply to all users, whether such limits are set by City, State, Federal, or other regulatory agencies or entities.
(q) Special Agreements. No statement contained in this chapter shall be construed as prohibiting any special agreement or arrangement between the City and any person whereby an industrial waste of unusual strength or character may be accepted by the City for treatment whether with or without pretreatment, provided that such agreement does not violate Categorical Pretreatment Standards, and further provided that there is no interference or pass through of the POTW by reason of the discharge of such wastes, and finally that no extra costs are incurred by the City without reimbursement by the user.
(r) All or certain industrial wastes shall be excluded when conditions are such that NPDES permit conditions cannot be met by City.
(s) Surcharges may be imposed by the City for any compatible pollutant discharged to the POTW.
(t) No new connection may be made unless there is flow capacity available in all downstream sewers, lift stations, force mains, and there is sufficient wastewater treatment capacity.
(u) Calculation of equivalent mass and concentration limits.
(1) When the limits in a categorical pretreatment standard are expressed only in terms of mass of pollutant per unit of production, the Director may convert the limits to equivalent limitations expressed either as a mass of pollutant discharged per day or effluent concentration for purposes of calculating effluent limitations applicable to individual IUs.
(2) Equivalent limitations shall be deemed pretreatment standards for the purposes of Section 307(d) of the Act. IUs will be required to comply with the equivalent limitations in lieu of the promulgated categorical standards from which the equivalent limitations were derived.
(Ord. 24-2009. Passed 9-8-09.)