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(A) Right of review by city. Admission into the public sewers of wastewaters containing any prohibited discharges in § 51.062 or having an average daily flow rate of 10,000 gallons or more shall be subject to review by the city. All proposed discharges to the sanitary sewers shall be reviewed prior to connection. The discharge of an existing user shall be subject to review if a change in the contribution is anticipated or at the request of the city to demonstrate continued compliance with ordinance requirements. In support of this review, existing or potential users of the sewers shall provide all information necessary to complete the review. This information shall include, but is not limited to, the following:
(1) File a written statement setting forth the nature of the enterprise, the source and amount of water used, the amount of water to be discharged with its present or expected bacterial, physical, chemical, radioactive, or other pertinent characteristics of the wastes.
(2) Provide a report on raw materials entering the process or support system, intermediate materials, final product, and waste by-products as those factors may affect waste control.
(3) Provide a plan map of the building, works, or complex, with each outfall to the surface waters, sanitary sewer, storm sewers, natural watercourse, or groundwaters noted, described, and the waste stream identified.
(4) Records and reports on the final disposal of specific liquids, solids, sludges, oils, solvents, radioactive materials, and other wastes.
(5) In the case of existing discharges, sampling and test reports as may be required by the city.
(B) Right to exclude or require pretreatment. On direction of the city, an entity may be required to remove, exclude, or require pretreatment of any waste in whole or in part for any reasons deemed to be in the city's interest. Where preliminary treatment facilities are provided for any waters or wastes, they shall be maintained in satisfactory and effective operation at no expense to the city and shall be designed and operated to assure that wastewaters discharged meet the characteristics set forth in § 51.062. A wastewater contribution permit may be required for any discharge as provided in §§ 51.080 through 51.088.
(Ord. 622, passed 3-4-85; Am. Ord. 1074, passed 9-27-21)
(A) No provision of this chapter shall be construed as preventing any special agreement or arrangement between the city and any user whereby sewage or wastes of unusual strength or character may be accepted by the sewage system for treatment, subject to the payment by such user of such additional charges as may be reasonable. However, federal and state prohibited discharge standards can never be waived. Where authorized by the WRRF Superintendent, special alternative limit agreements shall be made such that the allocation to all industrial users in the city service area does not exceed the calculated maximum allowable industrial loading (MAIL) for any parameter and such that the allocation to all sewer users does not exceed the calculated maximum allowable headworks loading (MAHL) for any parameter summarized in this section.
(B) A non-domestic user may, at the time of application for a wastewater discharge permit, or by a special alternative limit application, request that permitted discharge limits be increased from the standard local limits listed in § 51.062. Such special alternative limits shall be expressed as total daily pounds of pollutant discharged. Special alternative limits (SALs) shall be developed in accordance with the procedure for special alternative limits allocation as outlined in the Industrial Pretreatment Program manual for the city and approved by EGLE. The city's rules and regulations shall be available for inspection at 1301 N. Franklin St., Mt. Pleasant, MI 48858.
(C) The city reserves the right to reduce or deny special alternative limits if total pollutant discharges near or reach the MAHLs set forth in the table in this section. The city reserves the right to amend the MAHLs set forth in this section at its discretion. The special alternative limit must not result in the POTW (including the collection system) receiving pollutants in excess of its ability to convey or treat.
(D) A user which requests a special alternative limit through the permit application process must sign a written acknowledgment whereby the user consents to comply with all terms and conditions which may be imposed by the city. Such acknowledgment shall be in a form provided by the city, and must be executed by an authorized representative before any special alternative limit is effective.
(E) In addition, the city reserves the right to institute a review of any previously permitted special alternative limits at any time, pursuant to which the city, in its discretion, upon notice and the opportunity for hearing, may reduce or eliminate a user's previously permitted to approved special alternative limit.
(F) Any discharge in excess of the amount permitted by the special alternative limit is prohibited and is therefore a violation of this section and the user's wastewater discharge permit.
(G) The EGLE approved (2020) MAHL and MAILs for parameters that may be considered for SALs are as follows:
Parameter | MAHL (lb/day) | MAIL (lb/day) |
BOD5 | 5,764 | 645 |
TSS | 5,725 | 924 |
Phosphorus | 114 | 13 |
Ammonia (as N) | 918 | 54 |
(H) MAHL and MAIL values will be re-evaluated periodically as required by federal and state IPP regulations.
(Ord. 622, passed 3-4-85; Am. Ord. 1074, passed 9-27-21)
(A) When required by the city to demonstrate compliance with this chapter, the owner of any property serviced by a building sewer shall install a suitable control manhole together with sampling equipment, flow meters, and other appurtenances as necessary in the building sewer to facilitate monitoring the control manhole shall be constructed in accordance with plans approved by the Superintendent. The manhole shall be installed by the owner at his or her expense, and shall be maintained by him/her so as to be safe and accessible at all times. In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer from the point at which the building sewer is connected.
(B) All measurements, tests and analyses of the characteristic of waters and wastes to which reference is made in this chapter shall be determined in accordance with 40 CFR Part 136, as amended, or as required by EGLE. All measurements, tests, and analyses shall be determined as the control manhole and upon suitable samples taken at said manhole. It shall be the responsibility of the industrial customer to provide flow measuring sampling equipment for each control manhole.
(Ord. 622, passed 3-4-85; Am. Ord. 1074, passed 9-27-21) Penalty, see § 51.999
PRETREATMENT PROVISIONS
(A) Introduction. This subchapter sets forth uniform requirements for direct and indirect contributors into the wastewater collection and treatment system and enables the city to comply with all applicable state and federal pretreatment regulations (40 CFR Part 403).
(B) Federal standards supersede. Any existing or new federal categorical pretreatment standards shall immediately supersede the limitations imposed under this chapter if more stringent. In such a case, the Superintendent shall notify all affected users of the applicable reporting requirements under 40 CFR 403.12.
(C) Modification of federal pretreatment standards.
(1) Where the city's wastewater treatment system achieves consistent removal of pollutants limited by federal pretreatment standards, the city may apply to the approval authority for modification of specific limits in the federal pretreatment standards. CONSISTENT REMOVAL shall mean reduction in the amount of a pollutant or alteration of the nature of the pollutant by the wastewater treatment system to a less toxic or harmless state in the effluent.
(2) The city reserves the right to establish as described in § 51.062(P), more stringent limitations or requirements on discharges to the wastewater disposal system if deemed necessary.
(Ord. 622, passed 3-4-85; Am. Ord. 704, passed 3-12-91; Am. Ord. 727, passed 4-29-91; Am. Ord. 1074, passed 9-27-21)
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 city or state. (Exception is made when applicable to dilution to meet the pH requirement.)
(Ord. 622, passed 3-4-85; Am. Ord. 704, passed 3-12-91; Am. Ord. 727, passed 4-29-91; Am. Ord. 1074, passed 9-27-21) Penalty, see § 51.999
Each user shall provide protection from accidental discharge of prohibited materials or other substances regulated by this chapter and operational upset of pretreatment facilities. Facilities to prevent accidental discharge of prohibited materials and operational upsets 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 city for review, and shall be approved by the city before construction of the facility. All existing users shall complete such a plan by 180 days after the effective date of this chapter. No user who commences contribution to the POTW after the effective date of this chapter shall be permitted to introduce pollutants into the system until accidental discharge and operational upset procedures have been approved by the city. Review and approval of such plans and operating procedures shall not relieve the user from the responsibility to modify the user's facility as necessary to meet the requirements of this chapter. Copies of the user's spill prevention control and countermeasure (SPCC) plan and the pollution incidence prevention plan (PIPP) shall be filed with the city.
(A) Immediate notice. In the case of an accidental discharge or operational upset, 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 discharge or operational upset, the user shall submit to the Manager 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 chapter 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 a dangerous discharge. Employers shall insure that all employees who may cause or suffer such a dangerous discharge to occur are advised of the emergency notification procedure.
(Ord. 622, passed 3-4-85; Am. Ord. 704, passed 3-12-91; Am. Ord. 727, passed 4-29-91; Am. Ord. 1074, passed 9-27-21) Penalty, see § 51.999
The pretreatment program shall be funded as provided by § 51.100 of this chapter.
(Ord. 622, passed 3-4-85; Am. Ord. 704, passed 3-12-91; Am. Ord. 727, passed 4-29-91; Am. Ord. 1074, passed 9-27-21)
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