For the purpose of this chapter the words set out in this section shall have the following meanings:
"Act"means the Federal Water Pollution Control Act, also known as the Clean Water Act (33 USC
1251 et seq.), as amended.
"Applicable pretreatment standards"means for any specified pollutant: the more stringent of the city of Centralia prohibitive standards, state of Washington pretreatment standards, or applicable National Categorical Pretreatment Standards.
"Authorized representative of the user":
1. If the user is a corporation: 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
2. If the user is a partnership or sole proprietorship: a general partner or proprietor, respectively; or
3. 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 his/her designee.
4. 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 Centralia.
"Biochemical oxygen demand (BOD)"means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures during five days at twenty degrees centigrade, usually expressed as a concentration (milligrams per liter (mg/l)).
"Building drain"means that part of the lowest piping of a drainage system which receives the discharge from waste and other drainage pipes inside the walls of the building and conveys it to the side sewer beginning three feet outside the building wall.
"Bypass"means the intentional diversion of waste streams from any portion of a user's treatment facility.
"Capital costs"means all costs incurred as a result of planning, permitting, design or construction of the wastewater collection or treatment facilities.
"Categorical user"means a user covered by one or more categorical standards as defined herein.
"Centralia urban region"means the city of Centralia and that portion of Lewis County outside the Centralia corporate city limits that will be served by the Centralia wastewater treatment facility, shown in Figure 2-3 of the 1999 Facility Plan as now in existence or hereinafter amended.
"City"means the city of Centralia.
"Commercial user"means any nonresidential customer who engages in business activities or combination of business and residential activities if combined through a single-meter service.
"Cooling water"means water used for cooling purposes generated from any use, such as air conditioning, heat exchangers, cooling or refrigeration. For purposes of this chapter, such waters are further divided into two subcategories:
1. Uncontaminated: water to which the only pollutant added is heat, which has no direct contact with any raw material, waste, intermediate, or final product, and which does not contain a level of contaminants detectably higher than that of the intake water.
2. Contaminated: water likely to contain levels of pollutants detectably higher than intake water. This includes water contaminated through any means, including chemicals added for water treatment, corrosion inhibition, or biocides, or by direct contact with any process materials, products, and/or wastewater.
"Color"means the optical density at the visual wave length of maximum absorption, relative to distilled water. One hundred percent transmittance is equivalent to zero optical density.
"Composite sample"means the sample resulting from the combination of individual wastewater samples taken at selected intervals based on an increment of either flow or time.
"County"means Lewis County or any other county in which the city's wastewater facilities are located.
"Customer"(synonymous with user) means each person, business, property owner, sewer user, other entity separately billed by the city for the use or availability of public sewers in the Centralia sanitary sewer service area.
"Domestic user"means any person who contributes, causes, or allows the discharge of wastewater into the city of Centralia's POTW that is similar in volume and/or chemical make-up to domestic wastewater. For comparison, the utilities director may assume discharges of domestic wastewater from dwelling units to be one hundred gallons containing 0.2 pounds (three hundred mg/l) of BOD, 0.2 pounds (three hundred mg/l) of TSS and 0.024 pounds (24 mg/l) of TKN per capita per day, or as identified in the design of the POTW.
"Domestic wastewater"means wastewater from residential kitchens, bathrooms, and laundries, and water borne human wastes from sanitary facilities in all other buildings, together with such groundwater infiltration or surface waters as may be present.
"Environmental Protection Agency (EPA)"means the U.S. Environmental Protection Agency or, where appropriate, the regional water management division director, or other duly authorized official of the agency.
"Enzyme"means any complex chemical produced by living cells that is a biochemical catalyst.
"Explosion meter"means an electrical device that measures air quality for flammable or explosive gases.
"Facility plan"means a report titled "City of Centralia Wastewater Facilities Plan," 1999, CH2M Hill as the same now exists or hereafter amended.
"Grab sample or discrete sample"means a sample which is taken from a waste stream on a one-time basis without regard to the flow in the waste stream and without consideration of time.
"Grinder pump systems"means low pressure sewer systems designed to grind or macerate the materials in the domestic sewage discharged from a residential or commercial/industrial customer and pump it to the existing gravity sanitary sewer system. The system includes all tanks, pumps, valves, control systems, and the low-pressure force main pipe conveying the sewage to the gravity sewer.
"Income,"as used herein, means gross income as defined in Section
61(a) of the Internal Revenue Code of 1954, as now in effect or hereafter amended, plus any and all social security retirement and/or disability payments, Veterans Administration retirement and/or disability payments, Railroad Retirement Board pension and/or disability payments, and payments received from any other public or private pension, retirement, profit-sharing and disability plans, and unemployment compensation.
"Indirect discharge or discharge"means the introduction of pollutants into the POTW from any nondomestic source regulated under Section 307(b), (c), or (d) of the Act. The discharge into the POTW is normally by means of pipes, conduits, pumping stations, force mains, constructed drainage ditches, surface water intercepting ditches, and all constructed devices and appliances appurtenant thereto.
"Industrial user"means any nonresidential user whose wastewater results from any process or activity conducted by that user. Such wastewater includes contaminated wash water or leachate from solid waste facilities that may enter the wastewater utility collection system.
"Industrial wastewater"means water or liquid-carried waste from any industry, manufacturing operation, trade, or business which includes any combination of process wastewater, cooling water, contaminated stormwater, contaminated leachates, or other waters such that the combined effluent differs in some way from purely domestic wastewater, or is subject to regulation under the Federal Categorical Pretreatment Standards, the State Waste Discharge Permit program, or this chapter.
"Interference"means the effect of a discharge or discharges on the POTW from one or more users which results in either: (1) inhibition or disruption of the POTW, its treatment processes or operations, or its sludge processes, use or disposal; (2) violation of any permit regulating the city of Centralia wastewater discharge or sewage sludge; or (3) prevention of sewage sludge use or disposal in compliance with any applicable statutory or regulatory provision or permit issued thereunder. (Application sludge regulations shall include Section 405 of the Clean Water Act (33 USC
1345 et seq.); the Solid Waste Disposal Act (SWDA), including Title II commonly referred to as the Resource Conservation and Recovery Act (RCRA) (42 USC
6901 et seq.); state regulations contained in any state sludge management plan prepared pursuant to Subtitle D of the SWDA; the Clean Air Act (42 USC
7401 et seq.); the Toxic Substances Control Act (TSCA) (15 USC
2601 et seq.); the Marine Protection, Research, and Sanctuaries Act (
33 USC et seq.); and 40 CFR Part
503).
"Low-income senior citizen user"shall be defined as sixty-two years of age or older and whose total income, including that of his or her spouse or cotenant, does not exceed the amount specified in RCW
84.36.381(5)(b)(ii) as the same now exists or is hereafter amended.
"Low-income totally disabled user"shall be defined as any person who has been classified as totally disabled by the Social Security Administration and whose total income does not exceed the amount provided for low-income senior citizen users.
"Maximum daily concentration allowed"means the maximum concentration of a pollutant allowed to be discharged at any time, determined from the analysis of any discrete or composited sample collected, independent of the industrial flow rate and the duration of the sampling event.
"Medical wastes"means isolation wastes, infectious agents, human blood and blood products or byproducts, pathological wastes, sharps, body parts, fomites, etiology agents, contaminated bedding, surgical wastes, potentially contaminated laboratory wastes, and dialysis wastes.
"New source"means:
1. Any facility constructed after proposed categorical standards applicable to operations conducted at the facility where published, provided the facility is or may be a source of discharge to the POTW, and:
a. The building, structure, facility, or installation is constructed at a site at which no other source is located; or
b. The new construction totally replaces the process or production equipment that causes the discharge of pollutants at an existing source; or
c. Construction of a new source as defined under this paragraph has commenced if the owner or operation has either: (i) begun, or caused to begin any placement, assembly, or installation of facilities or equipment; (ii) begun, or caused to begin significant site preparation work including removal of existing facilities necessary for the emplacement of new source facilities or equipment; or (iii) entered into a binding contractual obligation for the purchase of facilities or equipment for use in operation of a new source.
"New user"means any noncategorical user that plans to discharge a new source of wastewater to the city of Centralia's collection system after the effective date of the ordinance codified in this chapter. This discharge may be from either a new or an existing facility. Any person that buys an existing facility discharging nondomestic wastewater will be considered an "existing user" if no significant changes in facility operation are made and wastewater characteristics are not expected to change.
"Normal domestic waste"means one hundred gpd/c containing less than three hundred mg/l BOD and TSS, twenty-four mg/l TKN, one hundred mg/l FOG.
"Overhead"means all costs and expenses, including administrative overhead and equipment replacement, chargeable directly to the operation and maintenance of the wastewater treatment and collection facilities.
"Pass through"means a condition occurring when discharges from users, (singly or in combination), exit the POTW in quantities or concentrations which either: (1) cause a violation of any requirement of the city of Centralia's NPDES or state waste discharge permit; (2) cause an increase in the magnitude or duration of a violation; or (3) cause a violation of any water quality standard for waters in the state promulgated under state regulations including Chapter
173-201A WAC.
"Permittee"means any person or user issued a wastewater discharge permit by EPA, DOE or the city.
"Person"means any individual, partnership, firm, company, corporation, association, joint stock company, trust, estate, any federal, state, or local governmental agency or entity, or any other entity whatsoever; or their legal representatives, agents or assigns.
"pH"means a measure of the acidity or alkalinity of a substance, expressed in standard units (technically defined as the logarithm of the reciprocal of the mass of hydrogen ions in gram moles per liter of solution).
"Pollutant"means any substance, either liquid, gaseous, solid, or radioactive, discharged to the POTW which, if discharged directly, would alter the chemical, physical, thermal, biological, or radiological properties of waters of the state of Washington including pH, temperature, taste, color, turbidity, oxygen demand, toxicity or odor. This includes any discharge likely to create a nuisance or render such waters harmful, detrimental or injurious to any beneficial uses, terrestrial or aquatic life, or to public health, safety or welfare.
"Pollution prevention"means source reduction; protection of natural resources by conservation; or increased efficiency in the use of raw materials, energy, water or other resources.
"Population equivalent"means a measure of wastewater production equivalent to one person served by the wastewater treatment facilities: one hundred gallons per day, 0.2 lbs per day BOD and TSS, three hundred mg/l BOD and TSS, 0.024 lbs per day or twenty-four mg/l TKN.
"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 local, state, or federal requirement related to pretreatment developed under Chapter
90.48 RCW and/or Sections 307 and 402 of the Clean Water Act or this chapter.
"Pretreatment standards"means any pollutant discharge limitations including categorical standards, state standards, and limits of CMC §
15.10.280,
15.10.290 and
15.10.300 applicable to the discharge of nondomestic wastes to the POTW. The term shall also include the prohibited discharge standards of this chapter, WAC
173-216-060, and
40 CFR Part 403.5.
"Public sewer"means a common sewer directly controlled by public authority.
"Publicly owned treatment works (POTW)"means a treatment works, as defined by Section 212 of the Act (33 USC
1292) which is owned by the city of Centralia. This definition includes any devices or systems used in the collection, storage, treatment, recycling, and reclamation of sewage or industrial wastewater and any conveyances which convey wastes to a wastewater treatment plant. The terms shall also mean the city of Centralia.
"Septage"means the liquid and solid material pumped from a septic tank, cesspool, or similar domestic sewage treatment system. This includes liquids and solids from domestic holding tanks, chemical toilets, campers, and trailers, when these systems are cleaned or maintained.
"Sewage or wastewater"means water-carried human wastes or a combination of water-carried wastes from residences, business buildings, institutions and industrial establishments, together with such ground, surface, storm, or other waters as may be present.
"Sewer"means any pipe, conduit, ditch, or other device used to collect and transport sewage.
"Side sewer"means that part of the horizontal piping of a drainage system which extends from the end of the building drain and which receives the discharge of the building drain and conveys it to a public sewer, private sewer or individual sewage disposal system.
"Significant industrial user":
1. A user subject to categorical pretreatment standards; or
2. A user that:
a. Discharges an average of twenty-five thousand gallons per day or more of process wastewater to the POTW (excluding sanitary, noncontact cooling, and boiler blowdown wastewater); or
b. Contributes a process waste stream which makes up five percent or more of the average dry weather hydraulic or organic capacity of the POTW treatment plant; or
c. Is designated as such by the DOE with input from the city of Centralia on the basis that it, alone or in conjunction with other sources, has a reasonable potential for adversely affecting the POTW's operation or for violating any pretreatment standard or requirement.
3. Upon a finding that a user meeting the criteria in subsection (2) of this definition has no reasonable potential for adversely affecting the POTW's operation or for violating any applicable pretreatment standard or requirement, the DOE may at any time, on its own initiative or in response to a petition received from a user or the city of Centralia and in accordance with procedures in 40 CFR
403.8(f)(6) determine that such user should not be considered a significant industrial user.
"Significant noncompliance (SNC)"shall refer to a violation or pattern of violation of one of the following natures:
1. Chronic violations of wastewater discharge limits, defined here as those in which sixty-six percent or more of all wastewater measurements taken during a six-month period exceed the daily maximum limit or average limit for the same pollutant parameter by any amount;
2. Technical review criteria (TRC) violations, defined herein as those in which thirty-three percent or more of all wastewater measurements taken for each pollutant parameter during a six-month period equal or exceed the product of the daily maximum limit or the average limit multiplied by the applicable TRC (1.4 for BOD, TSS, fats, oils and grease, and 1.2 for all other pollutants except pH);
3. Any other discharge violation that the city of Centralia believes has caused, alone or in combination with other discharges, interference or pass through (including endangering the health of the city of Centralia personnel or the general public);
4. Any discharge of pollutants that has caused imminent endangerment to human health, welfare or to the environment, or has resulted in the city of Centralia's exercise of its emergency authority to halt or prevent such a discharge;
5. Failure to meet, within ninety days after the scheduled date, a compliance schedule milestone contained in a wastewater discharge permit or enforcement order for starting construction, completing construction, or attaining final compliance;
6. Failure to provide within thirty days after the due date, any required reports, including baseline monitoring reports, periodic self-monitoring reports, and reports on compliance with compliance schedules;
7. Failure to accurately report noncompliance; or
8. Any other violation(s) which the administrative authority determines will adversely affect the operation or implementation of the local pretreatment program.
"Slug load"means any pollutant released in a discharge at a flow rate or concentration which could violate this chapter, or any discharge of a nonroutine, episodic nature such as an accidental spill or a noncustomary batch discharge.
"State"means the state of Washington.
"STEP system"means septic tank effluent pumping sewer systems consisting of a liquid/solids separation tank with a pumping system discharging into the gravity sewer system.
"Stormwater"means any flow occurring during or following any form of natural precipitation, and resulting from such precipitation, including snowmelt.
"Total kjeldahl nitrogen (TKN)"means the total of organic compounds, i.e., amino acids, proteins, etc. (human waste). The TKN measures the combined amount of organic nitrogen and the amount of ammonia in a given sample.
"Total suspended solids (TSS)"means the total suspended matter that floats on the surface of, or is suspended in, water, wastewater, or other liquids, and which is removable by laboratory filtering.
"Toxic pollutant"means one or a combination of the pollutants listed as toxic in regulations promulgated by EPA under Section 307 (33 USC
1317) of the Act.
"UGA"means the City's urban growth area.
"Upset"means an exceptional incident in which there is unintentional and temporary noncompliance with applicable treatment standards because of factors beyond the reasonable control of the user. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation.
"User or industrial user"means any nondomestic source of wastewater discharged to the POTW. This excludes domestic users as defined herein.
"Vacuum sewer systems"means sewage conveyance systems consisting of a receiving storage tank, valve system, collection pipeline and a vacuum pump conveying normal domestic sewage from residential or commercial/industrial customers to a discharge point into the sanitary gravity sewer system.
"Wastewater treatment facilities"means the city of Centralia wastewater treatment plant and outfall and all facilities designed for the collection and transmission of sewage to the plant.
"Wastewater utility"means the entity reporting to the city manager, which is responsible for the operation, maintenance, upgrade and improvement of the wastewater collection and treatment system serving the city of Centralia urban area.
(Ord. 2051 § 1 (part), 2000; Ord. 2298 § 1, 2013)