For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
ACT. Federal Water Pollution Control Act, also known as the Clean Water Act, as amended, 33 U.S.C. §§ 1251 et seq.
BOD. The value of the five-day test for Biochemical Oxygen Demand, as described in the latest edition of "Standard Methods for the Examination of Water & Wastewater."
COD. The value of the test for Chemical Oxygen Demand, as described in the latest edition of "Standard Methods for the Examination of Water & Wastewater."
EPA. The United States Environmental Protection Agency.
FATS, OILS, AND GREASES (FOG). 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 test procedures established in 40 CFR 136, as may be amended from time to time. All are sometimes referred to herein as "grease" or "greases." A wide range of food preparation activities including, but not limited to the following, can generate fats, oils and grease: cooking by frying, baking, grilling, sautéing, rotisserie cooking, broiling, boiling, blanching, roasting, toasting, poaching, infrared heating, searing, barbequing or other food preparation activity that produces a food product in or on receptacles that require washing and/or cleaning.
FOG DISPOSAL SYSTEM. A grease interceptor that reduces non-petroleum fats, oils, and grease (FOG) in effluent by separation, and mass and volume reduction.
GENERATOR. Any person who owns or operates a grease trap/grease interceptor, or whose act or process produces a grease trap waste.
GREASE INTERCEPTOR. An appurtenance or appliance that is installed in a sanitary drainage system to intercept non-petroleum fats, oils and grease (FOG) from a wastewater. There are two types of grease interceptors: gravity grease interceptors and hydromechanical grease interceptors.
GREASE INTERCEPTOR, GRAVITY.
GRAVITY GREASE INTERCEPTOR. A plumbing appurtenance or appliance that is installed in a sanitary drainage system to intercept non-petroleum fats, oils, and greases (FOG) from a wastewater discharge and is identified by volume, 30-minute retention time, baffle(s), a minimum of two compartments, a minimum total volume of 300 gallons, and gravity separation. These interceptors are designed by a registered professional engineer. Gravity grease interceptors are generally installed outside.
GREASE INTERCEPTOR, HYDROMECHANICAL.
HYDROMECHANICAL GREASE INTERCEPTOR. A plumbing appurtenance or appliance that is installed in a sanitary drainage system to intercept non-petroleum fats, oils, and grease (FOG)
from a wastewater discharge and is identified by flow rate, and separation and retention efficiency. The design incorporates air entrainment, hydro mechanical separation, interior baffling, and/or barriers in combination or separately, and an external flow control, with air intake (vent).
GREASE REMOVAL DEVICE (GRD). Any hydromechanical grease interceptor that automatically, mechanically removes non-petroleum fats, oils and grease (FOG) from the interceptor, the control of which are either automatic or manually initiated.
GREASE WASTE. Material collected in and from a grease interceptor in the sanitary sewer service line of a commercial, institutional, or industrial food service or processing establishment, including the solids resulting from de-watering processes.
INDIRECT DISCHARGE or DISCHARGE. The introduction of pollutants into a POTW from any non-domestic source.
INTERFERENCE. A discharge which alone or in conjunction with a discharge or discharges from other sources inhibits or disrupts the POTW, its treatment processes or operations or its sludge processes, use or disposal, or is a cause of a violation of the city's NPDES permit.
pH. The measure of the relative acidity or alkalinity of water and is defined as the negative logarithm (base 10) of the hydrogen ion concentration.
POTW or PUBLICLY OWNED TREATMENT WORKS. A treatment works which is owned by a state or municipality as defined by section 502(4) of the Clean Water Act. This definition includes any devices and systems used in the storage, treatment, recycling and reclamation of municipal sewage or industrial wastes of a liquid nature. It also includes all sewers, pipes and other conveyances that convey wastewater to a POTW Treatment Plant. The term also means the municipality as defined in section 502(4) of the Act, which has jurisdiction over the indirect discharges to and the discharges from such a treatment works. For purposes of this subchapter, the terms "sanitary sewer system" and "POTW" may be used interchangeably.
TRANSPORTER. A person who is registered with and authorized by the TCEQ to transport sewage sludge, water treatment sludge, domestic septage, chemical toilet waste, grit trap waste, or grease trap waste in accordance with current regulations.
TSS. The value of the test for Total Suspended Solids, as described in the latest edition of "Standard Methods for the Examination of Water & Wastewater."
USER. Any person, including those located outside the jurisdictional limits of the city, who contributes, causes or permits the contribution or discharge of wastewater into the POTW, including persons who contribute such wastewater from mobile sources.
(Ord. 2473, passed 6-12-2012)