§ 110-154. Pretreatment of wastewater.

(a)

Facilities. Users shall provide wastewater treatment as necessary to comply with this division and shall achieve compliance with all categorical pretreatment standards, local limits, and the prohibitions set out in section 110-153 within the time limitations specified by the EPA, the state, or the administrator, whichever is more stringent. Any facilities necessary for compliance shall be provided, operated, and maintained at the user's expense. Detailed plans describing such facilities and operating procedures shall be submitted to the administrator for review, and shall be acceptable to the administrator before such facilities are constructed. The review of such plans and operating procedures shall in no way relieve the user from the responsibility of modifying such facilities as necessary to produce a discharge acceptable to the county under the provisions of this division.

(b)

Additional measures.

(1)

Whenever deemed necessary, the administrator 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 sewage waste streams from industrial waste streams, and such other conditions as may be necessary to protect the POTW and determine the user's compliance with the requirements of this division.

(2)

The administrator may require any person discharging into the POTW to install and maintain, on their property and at their expense, a suitable storage and flow-control facility to ensure equalization of flow. A wastewater discharge permit may be issued solely for flow equalization.

(3)

Grease, oil, and sand interceptors shall be provided when, in the opinion of the administrator, they are necessary for the proper handling of wastewater containing excessive amounts of grasses and oil, or sand; except that such interceptors shall not be required for residential users. All interception units shall be of type and capacity approved by the administrator and shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be inspected, cleaned, and repaired regularly, as needed, by the user at their expense.

(4)

Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.

(c)

Accidental discharge/slug control plans. At least once every two years, the administrator shall evaluate whether each industrial user needs an accidental discharge/slug control plan. The administrator may, at his sole discretion, require any user to develop, submit for approval, and implement such a plan. Alternatively, the administrator may develop such a plan for any user. An accidental discharge/slug control plan shall address, at a minimum, the following:

(1)

Description of discharge practices, including nonroutine batch discharges;

(2)

Description of stored chemicals;

(3)

Procedures for immediately notifying the administrator of any accidental or slug discharge, as required by this division; 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 operation, 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.

(d)

Hauled wastewater.

(1)

Septic tank waste may be introduced into the POTW only at locations designated by the administrator, and at such times as are established by the administrator. Such waste shall not violate section 110-153 or any other requirements established by the county. The administrator may require septic tank waste haulers to obtain wastewater discharge permits.

(2)

The administrator shall require haulers of industrial waste to obtain wastewater discharge permits. The administrator may require generators of hauled industrial waste to obtain wastewater discharge permits. The administrator also may prohibit the disposal of hauled industrial waste. The discharge of hauled industrial waste is subject to all other requirements of this division.

(3)

Industrial waste haulers may discharge loads only at locations designated by the administrator. No load may be discharged without prior consent of the administrator. The administrator may take samples of each hauled load to ensure compliance with applicable standards. The administrator may require the industrial waste hauler to provide a waste analysis of any load prior to discharge.

(4)

Industrial waste 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 hauler, permit number, truck identification, names and addresses of sources of waste, and volume and characteristics of waste. The form shall identify the type of industry, known or suspected waste constituents, and whether any wastes are RCRA hazardous wastes.

(e)

Odors. It shall at all times be the responsibility of the user to eliminate or control the emission of offensive odors from building sewers to the system or the development of offensive odors in the system as the result of a discharge. Whenever the administrator determines that offensive odors emanating from building sewers or resulting from a discharge are present in the system, he shall require the owner, at the user's sole expense, to take whatever steps are necessary to eliminate such odors from the system. The cost of any devices which may be necessary to eliminate or control such odors and all attendant expenses shall be borne by the user.

(Ord. No. 98-17, § 4, 8-4-98)