(a) Approved Federal Standards. National Categorical Pretreatment Standards as promulgated by the U.S. EPA pursuant to the Act shall be met by all users of the regulated industrial categories.
(b) Local Standards. No person(s) shall discharge wastewater containing concentrations of the following enumerated materials, exceeding the following values.
Pollutant | Limit (mgl/L) |
Arsenic | 0.09 |
Cadmium | 0.07 |
Chromium | 1.50 |
Chromium VI | 0.84 |
Copper | 1.05 |
Cyanide | 1.53 |
Lead | 0.49 |
Mercury | 0.00 (See Section 1 below) |
Molybdenum | no limit |
Nickel | 1.65 |
Selenium | 0.22 |
Zinc | 2.80 |
(1) 0.00 mg/L is the actual local limit for mercury, however an industry discharging wastewater containing less than 100 ng/L will be considered in compliance. If any industry exceeds 100 ng/L three consecutive times, they will be required to perform a mercury minimization study.
The City may impose mass limitations on users where it is deemed appropriate by the City Engineer.
(c) The POTW shall not accept for treatment any industrial discharge which violates the applicable limits set forth or incorporated into this chapter. If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which water contains the substances or possesses the characteristics enumerated in Section 933.19 (a) or (b) hereof, or which in the judgment of the Engineer may interfere with, pass through or otherwise be incompatible with the wastewater facilities, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Engineer may:
(1) Reject the wastes;
(2) Require pretreatment to an acceptable condition for discharge to the public sewers;
(3) Require control over the quantities and rates of discharge; and/or
(4) Require payment to cover added cost of handling and treating the wastes not covered by existing sewer charges.
If the Engineer permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the Engineer and of the appropriate agencies of the State of Ohio. The property owner shall not commence construction of such facility until he has obtained such approvals in writing from the Engineer and appropriate State agencies.
(d) When the City Engineer, and/or other duly authorized employee of the City determines that the Industrial User(s) cannot comply with any of the criteria for discharge, the City Engineer, and/or other duly authorized employee of the City may require:
(1) Best Management Practices (BMPs) to be implemented to reduce pollutants of concern to acceptable levels prior to discharge to the public sewer system. BMPs will be specific to the business sector as an alternative to demonstrating compliance with a numerical local limit; or
(2) One or more of the options for discharge in Section 933.20(c) for compliance with a local limit.
(e) Grease, oil and sand interceptors shall be provided by the user when in the opinion of the Engineer, they are necessary for the proper handling of liquid wastes containing floatable grease; or any flammable wastes, sand or other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwelling units.
(f) No user shall increase the use of potable or process water in any way for the purpose of diluting a discharge as a partial or complete substitute for adequate treatment to achieve compliance with the standards set forth in this chapter.
(g) Each user shall provide protection from accidental discharge of prohibited or regulated materials or substances established by this chapter. Where necessary, facilities to prevent accidental discharge of prohibited materials shall be provided and maintained at the user's cost and expense. Detailed plans showing facilities and operating procedures to provide this protection shall be submitted to the Engineer for review, and shall be approved by the Engineer before construction of the facility. Review and approval of such plans and operating procedures by the Engineer shall not relieve the user from the responsibility to modify its facility as necessary to meet the requirements of this chapter.
(h) Standards Modification.
(1) Applicable Categorical Standards promulgated by the U.S. EPA shall be included by reference as part of the limitations defined in subsection (a) hereof.
(2) An application for modification of any National Categorical Pretreatment Standard may be considered for submittal to the Regional Administrator by the City when:
A. The POTW meets the consistent removal criteria defined in 40 CFR 403.7(a); and
B. Sufficient data is obtained in accordance with 40 CFR 403.7(c). All information necessary to apply for a modification shall be obtained by the user(s), at no cost to the City.
(3) Any changes to this section shall include a reasonable time schedule for compliance. Such time schedule may not exceed two years except under unusual circumstances and only after approval of the Engineer.
(i) The Engineer may issue orders to any user to require compliance with any requirements under this chapter including applicable Federal Standards, other discharge limits and/or reporting requirements. (Ord. 15-140. Passed 10-13-15.)