(A) BEST MANAGEMENT PRACTICES
means schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to prevent or reduce pollutants in discharges, to implement the prohibitions listed in National Pretreatment Standards pursuant to 40 CFR 403.5(a)(1) and (b), and prevent the discharge of substance that may contribute to sanitary sewer overflows.
BMPs
also include treatment requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage.
(B) FATS, OILS, AND GREASE (FOG)
means non-petroleum organic polar compounds derived from animal and/or plant sources that contain multiple carbon chain triglyceride molecules. These substances are detectable and measurable using analytical procedures established in the United States Code of Federal Regulations 40 CFR 136, as may be amended. All are sometimes referred to herein as “grease” or “greases”.
(C) FOG DISPOSAL SYSTEM
means any grease interceptor that reduces fats, oils and grease in effluent by separation, and mass volume reduction.
(D) FOOD SERVICE ESTABLISHMENT (FSE)
means a facility engaged in preparing food for consumption by the public such as a bakery, restaurant, commercial kitchen, caterer, hotel, school, country club, banquet facility, religious institution, hospital, prison, correctional facility, or care institution.
(E) GRAVITY GREASE INTERCEPTOR
means a plumbing appurtenance or appliance that is installed in a sanitary drainage system to intercept FOG from wastewater discharge and is identified by volume, 30-minute retention time, baffle(s), a minimum of two compartments, a minimum total volume of 750 gallons, and gravity separation.
(F) GREASE INTERCEPTOR
means a plumbing appurtenance or appliance thai is installed in a sanitary drainage system to intercept FOG from wastewater discharge.
(G) GREASE REMOVAL DEVICE (GRD)
means any hydro mechanical grease interceptor that automatically or mechanically removes FOG from the interceptor, the control of which are either automatic or manually initiated.
(H) GREASE TRAP
means a multi-baffle, single compartment, 10 to 50 gallon capacity device, serving one(l) to a maximum of four (4) fixtures designed for the removal of FOG from food service establishment discharges and installed prior to the effective date of this ordinance.
(I) HYDRO MECHANICAL GREASE INTERCEPTOR
means a plumbing appurtenance or appliance that is installed in a sanitary drainage system to intercept FOG from a wastewater discharge and is identified by flow rate, separation and retention efficiency. The design incorporates air entrainment, hydro mechanical separation, interior baffling, and/or barriers in combination or separately, and one of the following:
(1) External flow control, with air intake (vent): directly connected.
(2) External flow control, without air intake (vent); directly connected.
(3) Without external flow control, directly connected.
(4) Without external flow control, indirectly connected.
(J) ILLICIT DISCHARGE
means any discharge to the sanitary sewer system that is prohibited under local, state, or federal statutes, ordinances, codes, or regulations. Illicit discharges include all non-domestic sewage discharges not permitted under the provisions of this Section and discharges through connections to the sanitary sewer system, either directly or through satellite collection systems, not authorized pursuant to Chapter 16.24 of the AMC.
(K) INTERFERENCE
means a discharge which, alone or in conjunction with a discharge or discharges from other sources:
(1) Inhibits or disrupts the Publicly Owned Treatment Works, its treatment processes of operations, or its sludge processes, use or disposal; and
(2) Is therefore a cause of a violation of any requirement of the Publicly Owned Treatment Work’s NPDES permit (including an increase in the magnitude or duration of a violation) or of the prevention of sewage sludge use or disposal in compliance with the following statutory provisions and regulations or permits issued there under (or more stringent state or local regulations): Section 405 of the Clean Water Act, the Solid Waste Disposal Act (including Title II, more commonly referred to as the Resource Conservation and Recovery Act, and including the state regulations contained in any sludge management plan prepared pursuant to Subtitle D of the SWDA), the Clean Air Act, and the Marine Protection, Research and Sanctuaries Act.
(3) Inhibits operation, disrupts, or causes a condition within the sanitary sewer system that may cause excessive maintenance or a sanitary sewer overflow.
(L) SANITARY SEWER OVERFLOWS (SSO)
means any overflow, spill, release, discharge or diversion of untreated or partially treated wastewater from a sanitary sewer system.
SSOs
include:
(1) Overflows of untreated or partially treated wastewater that reach water of the United States;
(2) Overflows or releases of untreated or partially treated wastewater that do not reach waters of the United States; and
(3) Wastewater backups into buildings and onto private properties that are caused by blockages or flow conditions within the publicly owned portions of a sanitary sewer system.
(M) SIGNIFICANT INDUSTRIAL USER (SIU)
means that except where the control authority of a Publicly Owned Treatment Works has found an industrial user to be exempt pursuant to 40 CFR 403.3(v)(2) and (v)(3):
(1) All industrial users subject to categorical pretreatment standards under 40 CFR 403.6 and 40 CFR Chapter 1, Subchapter N; and
(2) Any other industrial user that discharges an average of 25,000 gallons or more of process wastewater to a publicly owned treatment works (excluding sanitary, non-contact cooling and boiler blow down wastewater), contributes a process waste stream which makes up 5 percent or more of the average dry weather hydraulic or organic capacity of the publicly owned treatment plant, or is designated as such by the publicly owned treatment works control authority on the basis that the industrial user has a reasonable potential for adversely affecting the publicly owned treatment works operation or for violating any pretreatment standard or requirement.
(N) SLUG DISCHARGE
means any discharge of a non-routine, episodic nature, including, but not limited to an accidental spill or a non-customary batch discharge, which has a reasonable potential to cause interference or pass through, or in any other way violate the publicly owned treatment work’s regulations, local limits or permit conditions. Discharge of prohibited material in any concentration shall be considered a slug discharge.
(Ord. 4620, passed 10-28-13)