Unless a provision explicitly states otherwise, the following terms and phrases, as used in this chapter, shall have the meanings hereinafter designated:
"Act" or "the Act"means the Federal Water Pollution Control Act, also known as the Clean Water Act, as amended, 33 U.S.C. §
1251 et seq.
means the State of California Central Valley Regional Water Quality Control Board.
"Authorized representative of the user"means:
1. If the user is a corporation:
a. The president, secretary, treasurer, or a vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy or decision-making functions for the corporation; or
The manager of one (1) or more manufacturing, production, or operation facilities employing more than two hundred fifty (250) persons or having gross annual sales or expenditures exceeding twenty-five million dollars ($25,000,000.00), if authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures.
If the user is a partnership or sole proprietorship: a general partner or proprietor, respectively.
If the user is a Federal, State, or local governmental facility: a director or highest official appointed or designated to oversee the operation and performance of the activities of the government facility, or their designee.
The individuals described in subsections (1) through (3) of this definition may designate another authorized representative if the authorization is in writing, the authorization specifies the individual or position responsible for the overall operation of the facility from which the discharge originates or having overall responsibility for environmental matters for the company, and the written authorization is submitted to the City of Dixon.
"Biochemical oxygen demand" or "BOD"means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures for five (5) days at twenty (20) degrees centigrade, usually expressed as a concentration (e.g., mg/l).
"City"means the City of Dixon or the City Council of Dixon.
"Director"means the Director of Public Works of the City of Dixon who is charged with certain duties and responsibilities by this chapter, or a duly authorized representative.
"Dwelling unit"means a structure serving as the residence of any individual or family.
"Environmental Protection Agency" or "EPA"means the U.S. Environmental Protection Agency or, where appropriate, the Regional Water Management Division Director, or other duly authorized official of said agency.
"Existing source"means any source of discharge, the construction or operation of which commenced prior to the publication by the EPA of proposed categorical pretreatment standards, which will be applicable to such source if the standard is thereafter promulgated in accordance with Section 307 of the Act.
"Grab sample"means a wastewater sample taken without regard to the flow of wastewater and over a period of time not to exceed fifteen (15) minutes.
"Instantaneous maximum allowable discharge limit"means the maximum concentration of a pollutant allowed to be discharged at any time, determined from the analysis of any discrete or composite sample collected, independent of the industrial flow rate and the duration of the sampling event.
"Interference"means 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; and therefore prevents sewage sludge use or disposal in compliance with any of the following statutory/regulatory provisions or permits issued thereunder, or any more stringent State or local regulations: Section 405 of the Act; the Solid Waste Disposal Act, including Title II, commonly referred to as the Resource Conservation and Recovery Act (RCRA); any State regulations contained in any State sludge management plan prepared pursuant to Subtitle D of the Solid Waste Disposal Act; the Clean Air Act; the Toxic Substances Control Act; and the Marine Protection, Research, and Sanctuaries Act.
"Lateral sewer"means the horizontal piping which extends from a building to the sewer main.
"Local limits"means pollutant limits established by the City to protect against pass through, interference or high maintenance or operational costs.
"Medical waste"means isolation wastes, infectious agents, human blood and blood products, pathological wastes, sharp instruments, body parts, contaminated bedding, surgical wastes, potentially contaminated laboratory wastes, and dialysis wastes.
"New source"means:
1. Any new building, structure, facility, or installation from which there is (or may be) a discharge of pollutants; provided, that:
a. The building, structure, facility, or installation is constructed at a site at which no other source is located; or
The building, structure, facility, or installation totally replaces the process or production equipment that causes the discharge of pollutants at an existing source; or
The production or wastewater generating processes of the building, structure, facility, or installation are substantially independent of an existing source at the same site. In determining whether these are substantially independent, factors such as the extent to which the new facility is integrated with the existing plant, and the extent to which the new facility is engaged in the same general type of activity as the existing source, should be considered.
Construction on a site at which an existing source is located results in a modification rather than a new source if the construction does not create a new building, structure, facility, or installation meeting the criteria of subsections (1)(b) or (c) of this definition but otherwise alters, replaces, or adds to existing process or production equipment.
Construction of a new source as defined under this subsection has commenced if the owner or operator has:
a. Begun, or caused to begin, as part of a continuous on-site construction program any placement, assembly, or installation of facilities or equipment; or significant site preparation work including clearing, excavation, or removal of existing buildings, structures, or facilities which is necessary for the placement, assembly, or installation of new source facilities or equipment; or
Entered into a binding contractual obligation for the purchase of facilities or equipment which is intended to be used in its operation within a reasonable time. Options to purchase or contracts which can be terminated or modified without substantial loss and contracts for feasibility, engineering, and design studies do not constitute a contractual obligation under this subsection.
"Noncontact cooling water"means water used for cooling which does not come into direct contact with any raw material, intermediate product, waste product, or finished product.
"Pass through"means a discharge which exits the POTW into the disposal facilities in quantities or concentrations which, alone or in conjunction with a discharge or discharges from other sources, is a cause of a violation of any requirement of the City's WDR, including an increase in the magnitude or duration of a violation.
"Person"means any individual, partnership, co-partnership, firm, company, corporation, association, joint stock company, trust, estate, governmental entity, or any other legal entity, or their legal representatives, agents, or assigns. This definition includes all Federal, State, and local governmental entities.
"pH"means a measure of the acidity or alkalinity of a solution, expressed in standard units.
"Pollutant"means dredged spoil, solid waste, incinerator residue, filter backwash, sewage, garbage, sewage sludge, munitions, medical wastes, chemical wastes, biological materials, radioactive materials, heat, wrecked or discarded equipment, rock, sand, cellar dirt, municipal, agricultural and industrial wastes, and certain characteristics of wastewater (e.g., pH, temperature, TSS, turbidity, color, BOD, COD, toxicity, or odor).
"Pretreatment"means the reduction of the amount of pollutants, the elimination of pollutants, or the alteration of the nature of pollutant properties in wastewater prior to, or in lieu of, introducing such pollutants into the POTW. This reduction or alteration can be obtained by physical, chemical, or biological processes; by process changes; or by other means, except by diluting the concentration of the pollutants unless allowed by an applicable pretreatment standard.
"Pretreatment requirements"means any substantive or procedural requirement related to pretreatment imposed on a user, other than a pretreatment standard.
"Publicly owned treatment works" or "POTW"means a "treatment works," as defined by Section 212 of the Act (33 U.S.C. §
1292) which is owned by the City of Dixon. This definition includes any devices or systems used in the collection, storage, treatment, recycling, and reclamation of sewage or industrial wastes of a liquid nature and any conveyances which convey wastewater to a treatment plant.
means any sewage from holding tanks such as vessels, chemical toilets, campers, trailers, and septic tanks.
"Settleable solids"means that matter in wastewater that will not stay in suspension for one (1) hour, but settles to the bottom.
"Sewage"means human excrement and gray water (household showers, dishwashing operations, etc.).
"Significant industrial user"means:
1. A user that:
a. Discharges an average of twenty-five thousand (25,000) gpd or more of process wastewater to the POTW (excluding sanitary, noncontact cooling, and boiler blowdown wastewater); or
Contributes a process wastestream which makes up five (5) percent or more of the average dry weather hydraulic or organic capacity of the POTW treatment plant; or
Is designated as such by City on the basis that it has a reasonable potential for adversely affecting the POTW's operation or for violating any local limit or requirement.
Upon a finding that a user meeting the criteria in subsection (1) of this definition has no reasonable potential for adversely affecting the POTW's operation or for violating any local limit or requirement, City may at any time, on its own initiative or in response to a petition received from a user, determine that such user should not be considered a significant industrial user.
"Slug load" or "slug"means any discharge at a flow rate or concentration which could cause a violation of the prohibited discharge standards contained in DMC §
14.01.230.
means any flow occurring during or following any form of natural precipitation, and resulting from such precipitation, including snowmelt.
"Suspended solids"means the total suspended matter that floats on the surface of, or is suspended in, water, wastewater, or other liquid, and which is removable by laboratory filtering.
"Wastewater"means liquid and water-carried industrial wastes and sewage from residential dwellings, commercial buildings, industrial and manufacturing facilities, and institutions, whether treated or untreated, which are contributed to the POTW.
(Ord. 13-004 § 26; Ord. 12-004)