Division 4 — PRETREATMENT OF INDUSTRIAL WASTEWATER

SEC. 19-35. PRETREATMENT FACILITIES.

Users shall provide wastewater pretreatment as necessary to comply with this article and shall achieve compliance with all categorical pretreatment standards, local limits and the prohibitions set out in section 19-25 of this article within the time limitations specified by EPA, the State, or the city manager, whichever is more stringent. Any facilities necessary for compliance shall be provided, operated, and maintained at user's expense. Detailed plans describing such facilities and operating procedures shall be submitted to the city manager for review, and shall be acceptable to the city manager before such facilities are constructed. The review of such plans and operating procedures will in no way relieve the user from the responsibility of modifying the facility as necessary to produce a discharge acceptable to the city manager under the provisions of this article.

(`64 Code, Sec. 25-21) (Ord. No. 2494)

SEC. 19-36. ADDITIONAL PRETREATMENT MEASURES.

(A) Whenever deemed necessary, the city manager may require users to restrict their discharge during peak flow periods, designate that certain wastewater be discharged only into specific sewers, relocate and/or consolidate points of discharge, separate domestic waste streams from industrial waste streams, and such other conditions as may be necessary to protect the system and determine the user's compliance with the requirements of this article.

(B) The city manager may require any person discharging into the system to install and maintain, on their property and at their expense, a suitable storage and flow- control facility to ensure active management of flow. An IWD permit may be issued solely for flow regulation.

(C) Users shall provide gravity separation devices when, in the opinion of the city manager, they are necessary for the proper handling of wastewater containing excessive amounts of oil and grease or sand. All gravity separation devices shall be of a type and capacity approved by the city manager and shall be so located to be easily accessible for cleaning and inspection. Such devices shall be inspected, cleaned, and repaired regularly, as needed, by the user at user's expense.

(D) The city manager may require users with the potential to discharge flammable substances to install and maintain an approved combustible gas detection meter.

(E) All dental dischargers are required to maintain a current industrial wastewater discharge permit.

(`64 Code, Sec. 25-22) (Ord. No. 2494, 2997)

SEC. 19-37. SEPARATION OF DOMESTIC AND INDUSTRIAL WASTEWATER.

All domestic wastewater including, but not limited to, those from restrooms, showers and drinking fountains shall be kept separate from all industrial wastewater until the industrial wastewater has passed through any required pretreatment system and/or monitoring facility.

(`64 Code, Sec. 25-23) (Ord. No. 2494)

SEC. 19-38. SPILL PREVENTION PLANS.

(A) Each user shall provide protection from accidental discharge of prohibited materials, other regulated pollutants or wastewater called out in this article or any other materials in concentration or quantities of which could be detrimental to the system, its operation or personnel. Each floor drain or floor sink located in an area where regulated chemicals are stored or used shall be protected in a manner approved by the city manager to prevent uncontrolled or accidental discharges of these regulated constituents from directly entering the system. Facilities to prevent accidental discharge shall be provided and maintained at the owner's and/or operator's expense. Detailed plans in the form of a spill prevention, control, and countermeasures plan (showing facilities and operating procedures to provide this protection) shall be submitted to the city manager for review and approval prior to construction of said facilities. Such review and approval of plans and operating procedures shall not relieve the user from the responsibility of said facilities as necessary to meet the other requirements of this article.

(B) 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 ensure that all employees who may cause or suffer such a dangerous discharge to occur are advised of the emergency notification procedure.

(C) Any user who causes or discovers a slug discharge of regulated pollutants or wastewater into the system shall immediately telephone the city manager in order that corrective action may be taken to protect the system, its operation and personnel. In addition, the person responsible for the discharge of the wastes or wastewater shall file a written report to the city manager, detailing the date, time and cause of the accidental discharge, the quantity and characteristics of the discharge and corrective action taken to prevent future discharges. The report shall be filed within five days of the occurrence of the discharge.

(`64 Code, Sec. 25-24) (Ord. No. 2494)

SEC. 19-39. ACCIDENTAL DISCHARGE/SLUG CONTROL PLANS.

(A) The city manager shall evaluate whether each significant industrial user needs an accidental discharge/slug control plan. The city manager may require any user to develop, submit for approval, and implement such a plan. Alternatively, the city manager may develop such a plan for any user.

(B) An accidental discharge/control slug plan shall address, at a minimum, the following:

(1) Description of discharge practices, including non-routine batch discharges;

(2) Description of stored chemicals;

(3) Procedures for immediately notifying the city manager of any accidental or slug discharge; and

(4) Procedures to prevent adverse impact from any accidental or slug discharge. Such procedures include, but are not limited to, inspection and maintenance of storage areas, handling and transfer of materials, loading and unloading operations, control of plant site runoff, worker training, building of containment structures or equipment, measures for containing toxic organic pollutants, including solvents, and/or measures and equipment for emergency response.

(`64 Code, Sec. 25-25) (Ord. No. 2494, 2761)

SEC. 19-40. TENANT AND OWNER RESPONSIBILITIES.

Any tenant under any rental, lease, or other agreement shall be jointly and severally responsible for compliance with the provisions of this article in the same manner as the owner, and both owner and tenant shall be jointly and severally liable to the city for any costs, damages, fines or penalties incurred and/or imposed by the city due to noncompliance by the tenant or owner with provisions of this article.

(`64 Code, Sec. 25-26) (Ord. No. 2494)

SEC. 19-41. DISCHARGES OF WASTES OR WASTEWATER INTO THE SYSTEM FROM VEHICLES.

(A) Septage may be introduced into the system only at locations designated by the city manager, and at such times as are established by the city manager. Such wastes shall not violate the provisions of division 3 of this article or any other federal, State or local regulation. The city manager may require septic tank waste haulers to obtain IWD permits.

(B) Industrial waste or wastewater haulers shall obtain IWD permits from the city manager. The city manager may require generators of hauled industrial waste or wastewater to obtain IWD permits. The city manager also may prohibit the disposal of hauled industrial waste or wastewater. The discharge of hauled industrial waste or wastewater is subject to all other requirements of this article.

(C) Industrial waste or wastewater haulers may only discharge loads at locations designated by the city manager. No load may be discharged without prior consent of the city manager. The city manager may collect samples of each hauled load to ensure compliance with applicable standards. The city manager may require the hauler to provide a waste analysis of any load prior to discharge.

(D) Industrial waste or wastewater haulers must provide a waste-tracking form for every load. This form shall include, at a minimum, the name and address of the industrial waste or wastewater hauler, permit number, truck identification, source of waste or wastewater, and volume and characteristics of waste or wastewater. The form shall identify the type of industry, known or suspected waste constituents, and whether any wastes are hazardous wastes designated in RCRA.

(`64 Code, Sec. 25-27) (Ord. No. 2494)

SEC. 19-42. VANDALISM.

No person shall willfully or negligently break, damage, destroy, uncover, deface, tamper with or prevent access to any structure, appurtenance or equipment, or other part of the system. Any person found in violation of this requirement shall be subject to the sanctions set out in divisions 8 through 10 of this article.

(`64 Code, Sec. 25-28) (Ord. No. 2494)

SEC. 19-43. DISCHARGES FROM FOOD ESTABLISHMENTS, VEHICLE MAINTENANCE FACILITIES, AND COMMERCIAL AND INDUSTRIAL LAUNDRIES.

(A) All food service establishments that introduce industrial wastewater into the system shall be required to install an approved grease interceptor device designed to prevent the unlawful discharge of fats, oil, and grease into the system. The grease interceptor device shall be a minimum of 750 gallons and in accordance to city standard plates 400, 413, and 415. The grease interceptor shall be easily accessible for cleaning and inspection. Maintenance records shall be maintained for a minimum of two years. The city manager may grant variances from the requirements of this paragraph on a case by case basis. The city manager may take into account the following items when determining whether to grant a variance:

(1) Size of the restaurant;

(2) Type and number of meals served per day;

(3) Seating capacity;

(4) Dishwashing facilities on-site; and

(5) Any other criteria the city manager deems applicable.

(B) All automotive related maintenance facilities that introduce industrial wastewater into the system shall be required to install a gravity separation device designed to prevent the excessive discharge of sand, silt, oil, and grease into the system. The gravity separation device shall be a minimum of 750 gallons and in accordance to city standard plates 400, 413, and 416. The city manager may grant variances from the requirements of this paragraph on a case by case basis.

(C) All commercial laundries, such as coin-operated facilities, that introduce industrial wastewater into the system shall be required to install a lint removal trap of a size and design approved by the city manager. The lint trap devices shall be cleaned at a minimum of one time per week. All commercial laundries that introduce wastewater into the system shall be required to install a gravity separation device of a minimum 750 gallons and in accordance to city standard plates 400, 413, and 416. The city manager may grant variances from the requirements of this paragraph on a case by case basis.

(D) The city manager may maintain an information file available for public use of acceptable designs of grease interceptors and gravity separation devices. These devices shall be designed in accordance with city standard plates 400, 413, 415, or 416. The installation of a design shown in such file or of any design meeting the size requirement set forth in this article or any recommendation of requirements made by the city manager shall not impute any liability to the city for the adequacy of the interceptor or gravity separation device under the actual conditions of use. Such installation shall not relieve the owner or proprietor of responsibility for keeping prohibited substances or substances in excess of the local limits in Section 19-26.

(`64 Code, Sec. 25-29) (Ord. No. 2494, 2997)

SEC. 19-44. MAINTENANCE OF GREASE INTERCEPTORS AND GRAVITY SEPARATION DEVICES.

(A) Any grease interceptor or gravity separation device required by this article shall be readily accessible for inspection and properly maintained to assure that the accumulations of grease, sand or oil do not impair its efficiency or pass out with the effluent.

(B) All persons required to use and maintain a grease interceptor or gravity separation device shall keep records of the pretreatment device cleaning, maintenance and grease removal and provide such reports on request to the city manager. These records shall include the date, the name of the person who cleaned the device and the disposal site of the waste. The report may be reviewed by the city manager at each routine inspection.

(C) Persons hauling wastes and wastewater removed from these interceptors or gravity separation devices shall be registered to do so by the appropriate permitting agency.

(D) An interceptor or gravity separation device shall not be considered properly maintained if material accumulations total more than 25 percent of the operating fluid capacity.

(E) Improper maintenance of any grease interceptors and gravity separation devices or failure to maintain adequate records shall be considered a violation of this section.

(`64 Code, Sec. 25-30) (Ord. No. 2494)

SEC. 19-45. LIMITATIONS ON THE USE OF GARBAGE GRINDERS.

Pollutants from garbage grinders shall not be discharged into the system except as follows:

(A) Wastes generated in preparation of food in a residence;

(B) Where the user has an existing garbage grinder and has an approval for that specific use from the city, and agrees to undertake whatever self-monitoring is

required to enable the city to equitably determine the charges and fees based on the waste constituents and characteristics. Such grinders must be repaired or replaced as necessary in order to at all times ensure that the waste is shredded to a degree that all particles will be carried freely under normal flow conditions prevailing in the city system. Garbage grinders shall not be used for grinding plastic, paper products, inert materials, garden refuse, or waste products resulting from the handling, storage and sale of fruits and vegetables in wholesale and retail produce establishments, or wastes from plants engaged in the preparation, processing or preserving of foods not intended primarily for immediate consumption; and

(C) At any time the property or business changes ownership, excluding residential property, any existing garbage grinders installed on the property must be removed and no new garbage grinders may be installed as a condition of continued city sewer service to the property.

(`64 Code, Sec. 25-31) (Ord. No. 2494)