A. Whenever deemed necessary, the superintendent 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 chapter.
B. Each person discharging into the POTW may be required to install and maintain, on his property and at his expense, a suitable storage and flow control facility to ensure equalization of flow over a twenty four (24) hour period. The facility must have a capacity for a city designated percent of the daily discharge volume and must be equipped with alarms and a rate of discharge controller, the regulation of which will be directed by the superintendent. A wastewater discharge permit may be issued solely for flow equalization.
C. Grease, oil, and sand interceptors must be provided when, in the opinion of the superintendent, they are necessary for the proper handling of wastewater containing excessive amounts of grease and oil, or sand; except that such interceptors will not be required for residential users. All interception units must be of type and capacity approved by the superintendent and must be located to be easily accessible for cleaning and inspection. Such interceptors must be inspected, cleaned, and repaired regularly, as needed, by the user at his expense.
1. A grease interceptor or a grease trap is not considered to be properly maintained if for any reason it is not in good working condition with all internal required plumbing of proper design and length in place, or if the operational fluid capacity has been reduced by more than twenty five percent (25%) by the accumulation of floating and settled solids, oils, and greases. The owner of any premises required to install a grease interceptor, the lessee and sublessee, if any, and any proprietor, operator, or superintendent of such facility are individually and severally liable for any failure of proper maintenance of such grease interceptor.
If the grease interceptor is not maintained adequately under the conditions of use, the grease interceptor must be resized and the user must install one which is effective in accomplishing the intended purpose.
When a grease interceptor/trap is cleaned, the sidewalls must be scraped and hosed down, while all the solids and liquids contained are removed. All wastes removed from any grease interceptor/trap must be legally disposed of other than to the sewer. The city of Coeur d'Alene specifically prohibits the following grease interceptor/trap practices:
a. Pumping to remove only accumulated sediments or floating materials;
b. Pumping operations which specifically separate floating or sediment interceptor solid wastes from wastewater and then return or decant the separated wastewater back into the grease interceptor/trap;
c. Transporting any hauled pollutants from another location for discharge into a grease interceptor/trap.
Use of grease trap/interceptor treatment products, including bacteria, designed to digest the grease, is specifically prohibited.
D. Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter. (Ord. 3374 §2, 2010)