§ 26.50.150. Wastewater pretreatment facilities.

A.

Users shall provide necessary wastewater treatment as required to comply with this chapter and shall achieve compliance within the time limitations specified by the state, EPA, or the utility, whichever is more stringent. Any facilities required to pretreat wastewater to a level acceptable to the utility shall be provided, operated and maintained at the user's expense.

B.

Detailed drawings and specifications showing the pretreatment facilities and operating procedures shall be submitted to the utility for review, and must be acceptable to the utility before construction of the facility. The review of such drawings, specifications and operating procedures will not relieve the user from the responsibility of modifying the facility as necessary to produce an effluent acceptable to the utility under the provisions of this chapter.

C.

Any subsequent changes in the pretreatment facilities or method of operation shall be reported in writing and be acceptable to the utility at least 30 days prior to the user's initiation of the changes.

1.

Bypass of pretreatment facilities is prohibited, unless:

a.

The bypass is unavoidable to prevent loss of life, personal injury, or severe property damage; or

b.

There are no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes or maintenance during normal periods of equipment downtime;

i.

This condition is not satisfied if adequate back-up equipment should have been installed, in the exercise of reasonable engineering judgment, to prevent bypass occurring during normal periods of equipment downtime or preventative maintenance; and

c.

The permittee submitted notices as required under subsection 2. below.

2.

Notice to the utility is required for the following bypass circumstances:

a.

Anticipated bypass. If the permittee knows in advance of the need for a bypass, the permittee shall submit prior notice, at least ten (10) days before the date of bypass, if possible.

b.

Unanticipated bypass. The permittee shall notify the utility by phone within 24-hours from the time it becomes aware of an unanticipated bypass event. A written submission shall also be provided within five (5) days of the time the user becomes aware of the bypass. The written submission shall contain a description of the bypass and its cause; the duration of the bypass, including dates and times, and, if the bypass has not been corrected, the anticipated time it is expected to continue, the steps taken or planned to reduce, eliminate, and prevent recurrence of the bypass.

D.

Grease, oil, and sand interceptors shall be required when, in the opinion of the general manager, interceptors are necessary for the proper handling of wastewater containing excessive amounts of grease and oil, or sand;

1.

Except such interceptors shall not be required for residential users.

2.

All interception units shall be of type and capacity approved by the general manager and shall be so located to be easily accessible for cleaning and inspection. Such interceptors shall be installed, inspected, cleaned, and repaired regularly, as needed, by the user at their expense.

(AO No. 86-118, 9-4-86; AO No. 2000-129(S), § 11, 11-21-00; AO No. 2012-77, § 12, 8-7-12)

Note— Formerly § 26.50.031.