(A) The use of degreasing or line cleaning products containing petroleum based solvents, or containing any solvent, caustic, or acid which dissolves grease or containing any enzyme or any chemical or other agent which dissolve grease is prohibited, regardless of whether same is added directly into the grease trap or grease interceptor or same is added to floor drains or other kitchen fixtures. All such solvents are also prohibited for use with any oil and water separator or other separator.
(B) Bacteria or other microbial agents which contain no other prohibited agent may be used only if such agent does not interfere with the performance of the grease trap or grease interceptor. The use of such agents is prohibited if there is any sign that the use of the agent is interfering with the grease trap’s or grease interceptor’s performance. Prima facie signs of such interference include:
(1) The use of any such agent is accompanied by an emulsification of oil and/or grease in the grease trap that causes a shift in the consistency of the grease contents from a stratified layer with a dense greasy crust on top to an almost uniform pancake batter-like consistency.
(2) The use of any such agent is accompanied by an accumulation of grease or the appearance of free-floating oil or grease downstream of the grease trap.
(3) The use of any such agent is accompanied by any end-of-pipe grab sample result for fats, oils and greases above the instantaneous maximum concentration limit of 100 mg/L.
(C) Any user utilizing bacteria or microbial agent shall remain responsible for not exceeding the established oil and grease numerical limit and responsible for maintaining an effective volume of the interceptor or separator. Any user utilizing biological additives must notify the City not less than 30-days prior to such use and must provide the manufacturer’s Material Safety Data Sheets, and submit a report with product name, quantity purchased, date purchased, and dosage to be used for such additives. In addition, during all periods of use, a maintenance record of the use of such agent must be maintained showing the date and dosage each time an additive is used. The exclusive use of biological additives is not an acceptable grease management or maintenance practice. Bacteria or microbial agents shall not be employed as the sole method of treating or maintaining a grease trap’s or interceptor’s effluent. The use of any bacteria or microbial agent shall not excuse compliance with each and every other provision of this Ordinance, including the installation and maintenance of the required grease interceptor or trap and all provisions relating thereto.
(Prior Code, Art. 16A, § IB)