Chapter 13.36
INDUSTRIAL WASTEWATER

Sections:

13.36.010 Permit – Required – Restrictions.

13.36.020 Permit – Application.

13.36.030 Permit – Changes in restrictions.

13.36.040 Permit – Suspension.

13.36.050 Permit – Revocation.

13.36.060 Availability of city facilities.

13.36.070 Prohibited industrial waste discharges.

13.36.080 Pretreatment of industrial wastewaters.

13.36.090 Control manhole and separation of domestic and industrial wastewaters.

13.36.100 Industrial wastewater sampling, analysis and flow measurements.

13.36.110 Damage caused by prohibited wastewater discharge.

13.36.010 Permit – Required – Restrictions.

A. No person shall discharge or cause to be discharged any industrial wastewaters directly or indirectly to sewerage facilities owned by the city without first obtaining a city permit for industrial wastewater discharge.

B. The permit for industrial wastewater discharge may require pretreatment of industrial wastewaters before discharge, restriction of peak flow discharges, discharge of certain wastewaters only to specified sewers of the city, relocation of point of discharge, prohibition of discharge of certain wastewater components, restriction of discharge to certain hours of the day, payment of additional charges to defray increased costs of the city created by the wastewater discharge, and such other conditions as may be required to effect the purpose of this division.

C. No city permit for industrial wastewater discharge is transferable without the prior written consent of the city.

D. No person shall discharge industrial wastewaters in excess of the quantity or quality limitations set by the permit for industrial wastewater discharge. (Ord. 76-360 § 701).

13.36.020 Permit – Application.

A. Applicants for a permit for industrial wastewater discharge shall complete a city application form available at the office of the city clerk. The city may require additional information on the characteristics of the wastewater discharge beyond that required on the application form.

B. Upon receipt of all required information, the application shall be processed and, upon approval, be signed by the director of public works, and one copy returned to the applicant. When properly signed, the application form shall constitute a valid permit for industrial wastewater discharge.

C. The application shall be approved if the applicant has complied with all applicable requirements of this division and has furnished to the city all requested information and if the city engineer determines that there is adequate capacity in the city’s facilities to convey, treat, and dispose of the wastewaters. (Ord. 76-360 § 702).

13.36.030 Permit – Changes in restrictions.

The city may change the restrictions or conditions of a permit for industrial wastewater discharge from time to time as circumstances may require. The city shall allow an industrial discharger a reasonable period of time to comply with any changes in the industrial wastewater permit required by the city. (Ord. 76-360 § 703).

13.36.040 Permit – Suspension.

A. The director of public works may suspend a permit for industrial wastewater discharge for a period of not to exceed 45 days when such suspension is necessary in order to stop a discharge which presents an imminent hazard to the public health, safety or welfare, to the local environment or to the city’s sewerage system.

B. Any discharger notified of a suspension of his industrial wastewater permit shall immediately cease and desist the discharge of all industrial wastewater to the sewerage system. In the event of a failure of the discharger to comply voluntarily with the order, the director of public works shall take such steps as are reasonably necessary to ensure compliance.

C. The director of public works shall reinstate the industrial wastewater permit upon proof of satisfactory compliance with all discharge requirements of the city. (Ord. 76-360 § 704).

13.36.050 Permit – Revocation.

A. The city may revoke a permit for industrial wastewater discharge upon a finding that the discharger has violated any provision of this division.

B. Any discharger whose industrial wastewater permit has been revoked shall immediately stop all discharge of any liquid-carried wastes covered by the permit to any public sewer.

C. The director of public works may disconnect or permanently block from such public sewer the industrial connection sewer of any discharger whose permit has been revoked if such action is necessary to ensure compliance with the order of revocation. (Ord. 76-360 § 705).

13.36.060 Availability of city facilities.

If sewerage capacity is not available, the city may require the industrial wastewater discharger to restrict his discharge until sufficient capacity can be made available. When requested, the city will advise persons desiring to locate new facilities as to the areas where industrial wastewater of their proposed quantity and quality can be received by available sewerage facilities. The city may refuse service to persons locating facilities in areas where their proposed quantity or quality of industrial wastewater is unacceptable in the available treatment facility. (Ord. 76-360 § 707).

13.36.070 Prohibited industrial waste discharges.

All discharges prohibited by Chapter 13.32 FMC are included in this chapter as prohibited industrial waste discharges. (Ord. 76-360 § 706).

13.36.080 Pretreatment of industrial wastewaters.

A. An industrial wastewater pretreatment system or device may be required by the city engineer to treat industrial flows prior to discharge to the sewer when it is necessary to restrict or prevent the discharge to the sewer of certain waste constituents, to distribute more equally over a longer time period any peak discharges of industrial wastewaters, or to accomplish any pretreatment result required by the city engineer.

B. All pretreatment systems or devices shall be approved by the city engineer but such approval shall not absolve the industrial discharger of the responsibility of meeting any industrial effluent limitation required by the city. All pretreatment systems judged by the city engineer to require engineering design shall have plans prepared and signed by an engineer of suitable discipline licensed in the state.

C. Normally, a gravity separation interceptor, equalizing tank, neutralization chamber and control manhole will be required, respectively, to remove prohibited settleable and clotable solids, to equalize wastewater streams varying greatly in quantity and/or quality, to neutralize low or high pH flows, and to facilitate inspection, flow measurement and sampling.

D. Floor drains from commercial or manufacturing buildings, warehouses or multi-use structures shall not discharge directly to the sewer, but shall first discharge to a gravity separation interceptor. (Ord. 76-360 § 708).

13.36.090 Control manhole and separation of domestic and industrial wastewaters.

A. All domestic or sanitary wastewaters from restrooms, showers, drinking fountains, etc., shall be kept separate from all industrial wastewaters until the industrial wastewaters have passed through any required pretreatment system or device.

B. A control manhole of a design approved by the city engineer shall be furnished and installed by certain designated industrial wastewater dischargers to facilitate inspection, sampling and flow measurements by personnel of the city. This control manhole shall be located off the industrial premises or, if within the plant fence, a special locked gate adjacent to the manhole and at a location approved by the city shall be provided, with keys to the gate lock given to the city. Unrestricted access to this control manhole shall be available to authorized personnel of the city at all times. The control manhole may be used as a junction manhole for domestic sewage and industrial wastes provided the junction occurs downstream of the sampling or flow measuring point. (Ord. 76-360 § 709).

13.36.100 Industrial wastewater sampling, analysis and flow measurements.

A. Periodic measurements of flow rates, flow volumes, COD, and suspended solids for use in determining the annual industrial wastewater treatment charge and such measurements of other constituents believed necessary by the city engineer shall be made by all industrial wastewater dischargers unless specifically relieved of such obligation by the city engineer.

B. All wastewater analyses shall be conducted in accordance with the appropriate procedure contained in “Standard Methods.” If no appropriate procedure is contained therein, the standard procedure of the industry or a procedure judged satisfactory by the city engineer shall be used to measure wastewater constituents. (Ord. 76-360 § 710).

13.36.110 Damage caused by prohibited wastewater discharge.

Any industrial wastewater discharger who discharges or causes the discharge of prohibited wastewaters which cause damage to city facilities, detrimental effects on treatment processes, or any other damages resulting in costs to the city shall be liable to the city for all damages occasioned thereby. (Ord. 76-360 § 711).