Chapter 13.18 PRETREATMENT REGULATIONS

These regulations set forth uniform requirements for users of publicly owned treatment works (POTW) for the Sumner wastewater treatment facility (WWTF) and contributing jurisdictions (contributing jurisdictions) to comply with all applicable state and federal laws, including chapter 173-216 WAC, the Clean Water Act (33 U.S.C. Section 1251 et seq.), and the General Pretreatment Regulations (40 CFR Part 403).

The objectives of these regulations are:

A. To encourage economic growth by establishing clear, fair standards and requirements for the management and pretreatment of nondomestic waste.

B. To protect the POTW from potential harm. Harm to be prevented includes causing interference or otherwise harming the POTW; causing pass-through, or otherwise harming the receiving environment; or causing the POTW to respond to discharge based on a real or perceived threat;

C. To protect POTW staff who may be affected by wastewater and sludge in the course of their employment and to protect general public;

D. To promote reuse and recycling of industrial wastewater by industrial users;

E. To provide high-quality end products, such as reclaimed water and biosolids from the POTW, for beneficial use;

F. To provide for fees for the equitable distribution of the cost of operations, maintenance, and improvement of the POTW, as economically feasible; and

G. To enable the Sumner WWTF to comply with its National Pollution Discharge Elimination System (NPDES) permit conditions, sludge use and disposal requirements, and any other federal or state laws to which the POTW is subject.

These regulations shall apply to all persons connected (or believed connected) to the POTW. The regulations compel the production of information; authorize the issuance of control documents, including wastewater discharge permits; provide for monitoring, compliance, and enforcement activities; establish administrative review procedures; require reporting; and provide for the setting of fees for the equitable distribution of costs resulting from the program establishment herein.

The provisions of these regulations shall be revised or amended from time to time, consistent with the purpose and policy set forth within these pretreatment regulations, to conform to changes in the state and federal water quality laws and regulations. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.020 Administration.

Except as otherwise provided herein, as the owner of the Sumner wastewater treatment facility (WWTF), the city of Sumner (city), is the control authority responsible for administering and managing the overall affairs of the WWTF. The city of Bonney Lake (CoBL) is the owner of a system of sewers that provide for the collection and transmission of wastewater to the WWTF. CoBL is the contributing jurisdiction (contributing jurisdiction) responsible for managing their system of sewers connected to the WWTF.

The city public works director (director) shall administer, implement, and enforce the provisions of these regulations. Any powers granted to, or duties imposed upon, the director may be delegated by the director to other control authority, WWTF or contributing jurisdiction personnel. The director is authorized to adopt implementing procedures consistent with these pretreatment regulations. (Ord. 2839 § 1 (Exh. A), 2024)

Article II. Abbreviations and Definitions

13.18.200 Abbreviations.

The following abbreviations, when used in these pretreatment regulations, shall have the designated meanings:

AKART –	All Known, Available and Reasonable Methods of Prevention, Control and Treatment
ASPP –	Accident Spill Prevention Plan
BOD –	Biochemical Oxygen Demand
BMPs –	Best Management Practices
CFR –	Code of Federal Regulations
CIU –	Categorical Industrial User
EPA –	U.S. Environmental Protection Agency
GI –	Grease Interceptor
GPD –	Gallons per Day
IU –	Industrial User
LEL –	Lower Explosive Limit
mg/L –	Milligrams per Liter
MIU –	Minor Industrial User
NAICS –	North American Industry Classification System
NOV –	Notice of Violation
NDCIU –	Nondischarging Categorical Industrial User
NPDES –	National Pollutant Discharge Elimination System
POTW –	Publicly Owned Treatment Works
RCRA –	Resource Conservation and Recovery Act
RCW –	Revised Code of Washington
SIC –	Standard Industrial Classification
SIU –	Significant Industrial User
TSS –	Total Suspended Solids
U.S.C. –	United States Code
UPC –	Uniform Plumbing Code
WAC –	Washington Administrative Code
WWTF –	Wastewater Treatment Facility

(Ord. 2839 § 1 (Exh. A), 2024)

13.18.210 Definitions.

Unless a provision explicitly states otherwise, the following terms and phrases, as used in these pretreatment regulations, shall have the meanings hereinafter designated:

“Accredited laboratory” means any laboratory accredited under the provisions of Accreditation of Environmental Laboratories, chapter 173-50 WAC.

“Act” or “the Act” means the Federal Water Pollution Control Act, also known as the Clean Water Act, as amended, 33 U.S.C. Section 1251 et seq.

“AKART” means all known, available, and reasonable methods of prevention, control, and treatment. AKART represents the most current methodology that may reasonably be required for preventing, controlling, or abating the pollutants associated with a discharge. the concept of AKART applies to both point and nonpoint sources of pollution. The term “best management practices” is a subset of the AKART requirement.

“Ammonia nitrogen (NH3 or NH3-N)” means all the nitrogen in water, sewage, or other liquid waste present in the form of ammonia, ammonia ion or in the equilibrium NH + NH + H +, expressed as mg/L.

“Approval authority” means Ecology’s Water Quality Program Manager or designee.

“Authorized representative of the nondomestic user” means:

1. If the nondomestic user is a corporation, regardless of form:

a. The president, secretary, treasurer, or a vice-president of the corporation in charge of a principal business function, or any other individual or person who performs similar policy or decision-making functions for the corporation; or

b. The manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions which govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiate and direct other comprehensive measures to ensure long-term environmental compliance with environmental laws and regulations; can ensure that the necessary systems are established or actions taken to gather complete and accurate information for control mechanism requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures.

2. If the nondomestic user is a partnership or sole proprietorship, regardless of form: a general partner or proprietor, or person who performs similar policy or decision-making functions for the partnership or sole proprietorship.

3. If the nondomestic 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 above 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 director.

“Auto-related business (ARB)” means any commercial business conducting automobile and other vehicle repair, maintenance, washing, painting, salvaging services or selling automobiles or parts.

“Baseline monitoring report (BMR)” means the normal and expected levels of pollutants in a nondomestic waste stream.

“Best management practices” or “BMPs” means schedules of activities, prohibitions of practices, maintenance procedures, and other management practices to implement the prohibitions listed in SMC 13.18.300(A) and (B) and 40 CFR Parts 403.5(a)(1) and (b). BMPs may also include treatment requirements, operating procedures, and practices to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from raw materials storage.

“Biochemical oxygen demand” or “BOD” means the quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures for five days at 20 degrees centigrade, usually expressed as a concentration (e.g., mg/L).

“Bypass” means the intentional diversion of waste streams from any portion of a nondomestic user’s pretreatment facility.

“Categorical industrial user” or “CIU” means a nondomestic user subject to a categorical pretreatment standard.

“Categorical pretreatment standard” means any regulation containing pollutant discharge limits promulgated by the EPA in accordance with Sections 307(b) and (c) of the Act (33 U.S.C. Section 1317) which apply to a specific category of nondomestic user and which appear in 40 CFR Chapter I, Subchapter N, Parts 405 through 471.

“Composite sample” means a representative composite of samples of a waste stream taken throughout the period of a calendar day, or equivalent representative 24-hour period, when discharges are produced by a regulated activity. Composite samplers must interface with a flow-metering device to produce a representative flow proportionate composite sample unless the director has determined that flow proportionate samples are not required or the analyte is not amenable to composite sampling (pH, temperature, oil, etc.).

“Contributing jurisdiction” means a county, city, town, water-sewer district, public utility district, other special purpose district, municipal corporation, or other unit of local government of this or another state and any Indian tribe recognized as such by the United States government authorized by law to provide a system of sewers for the collection, transmission, or treatment of wastewater that has entered into an agreement with the control authority that provides for acceptance of some or all of that entity’s wastewater.

“Control authority” means the city of Sumner, as the owner of the Sumner wastewater treatment facility (WWTF) who administers and manages the overall affairs of the WWTF, including treatment operations and without limitation the administration of these pretreatment regulations.

“Control document” means a wastewater discharge permit or any other formal written wastewater discharge authorization or prohibition issued by the director.

“Daily maximum limit” means the maximum allowable discharge of a pollutant over a calendar day or equivalent representative 24-hour period. Where daily limits are expressed in units of mass, the daily discharge is calculated by multiplying the daily average concentration and total flow volumes in the same 24-hour period by a conversion factor to get the desired units. Where daily limits are expressed in terms of a concentration, the daily discharge is the composite sample value, or flow weighted average if more than one discrete sample was collected. Where flow weighting is infeasible, the daily average is the arithmetic average of all samples if analyzed separately, or the sample value if samples are composited prior to analysis.

“Dangerous waste” means solid wastes designated in Washington Dangerous Waste Regulations WAC 173-303-070 through 179-303-100 as dangerous, or extremely hazardous or mixed waste. The waste may be any of the following: characteristic hazardous waste (toxicity, corrosivity, ignitability, reactivity); listed hazardous waste; and/or state-only dangerous waste for toxicity or persistence.

“Dental establishment” means a facility where the practice of dentistry is performed, including, but not limited to, institutions, permanent or temporary offices, clinics, home offices, and facilities owned and operated by federal, state or local governments, that discharges wastewater to a publicly owned treatment works (POTW).

“Director” means the public works director of the control authority, or the designee of the director, including without limitation any designated officer, employee or other representative of any contributing jurisdiction, who is delegated certain duties and responsibilities by these pretreatment regulations.

“Discharge” or “indirect discharge” means the introduction of pollutants into the POTW from any nondomestic user or nondomestic source subject to these pretreatment regulations or other state or federal regulations.

“Domestic user” means any person who contributes, causes, or allows the contribution of wastewater to the POTW that the director determines is of similar volume and/or chemical makeup to that of a residential dwelling unit. Discharges from a residential dwelling unit typically include kitchen wastes, human wastes, and housekeeping cleaning materials in volumes and/or concentrations normally discharged from these classes of users and typically include up to 100 gallons per capita per day, 30 mg/L NH3, 300 mg/L of BOD, and 300 mg/L of TSS.

“Domestic wastewater” means a source of waste or wastewater generated from activities at a residential dwelling unit.

“Ecology” means the Washington State Department of Ecology.

“Engineering report” means a document that thoroughly examines the engineering and administrative aspects of a particular nondomestic wastewater facility. The report shall contain the appropriate information required in WAC 173-240-060 or 173-240-130.

“EPA” means the United States Environmental Protection Agency or, where appropriate, the Director of the Region 10 Water Division, or other duly authorized official.

“Existing source” means any source of discharges subject to categorical pretreatment standards and discharging prior to the promulgation of those standards or otherwise not meeting the definition of a new source.

“Fats, oils and grease (FOG)” means components of wastewater able to be measured by the methods described in the current edition of Standard Methods for the Examination of Water and Wastewater, or methods identified in 40 CFR Part 136. The term “fats, oils and grease” shall include polar and nonpolar fats, oils, and grease and other components extracted from wastewater by these methods.

“Food processing establishment” means any establishment in which food is prepared, manufactured, or packaged for consumption off site.

“Food service establishment” means any establishment for the preparation and/or serving of food or other edible products and/or are required to have a food business permit issued by the Tacoma-Pierce County health department. This term includes but is not limited to restaurants, coffee shops, cafeterias, breweries, wineries and distilleries, short-order cafes, grocery store delis, luncheonettes, taverns, lunchrooms, places which manufacture retail sandwiches, church kitchens, childcare facilities where food is prepared, adult care facilities, institutional cafeterias, catering establishments, mobile food vending vehicles, food trucks, mobile vendors and operations connected therewith, and similar facilities by whatever name called.

“Grab sample” means a sample which is taken from a waste stream without regard to the flow in the waste stream and over a period of time not to exceed 15 minutes.

“Gravity grease interceptor” means a grease interceptor of at least 1,000 gallons to serve one or more fixtures and which is remotely located underground and outside of a food service establishment. It is designed to collect, contain or remove food wastes and FOG from the waste stream while allowing the balance of the liquid waste (“gray water”) to discharge to the wastewater collection system by gravity.

“Grease interceptor” means a pretreatment device designed to separate and collect fats, oils, grease, and solids and prevent these pollutants from entering the sanitary sewer. Grease interceptors may be either hydromechanical grease interceptors (HGIs) or gravity grease interceptors (GGIs) and shall meet the requirements of SMC 13.18.400 and 13.18.410. Grease interceptors shall be located to allow access for inspection and maintenance.

“Grease trap” means a device designed to retain FOG from one to a maximum of four fixtures, with a maximum capacity of 50 gpm/100 pounds, and a minimum of 20 gpm/40 pounds. Grease traps shall be located to allow access for inspection and maintenance.

“Hauled waste” means a waste transported by haulers and discharged to a POTW through a conveyance system other than a pipe (e.g., by truck or rail). Hauled waste might be sewage or domestic waste, or it might include nondomestic waste, or a combination of both types of waste.

“Hazardous waste” means any waste designated as hazardous under the provisions of 40 CFR 261 or a dangerous waste under chapter 173-303 WAC – State Waste Discharge Permit Program, Dangerous Waste Regulations.

“High-strength waste or wastewater” means any waters or wastewater having concentrations of BOD or TSS in excess of 300 mg/L, having concentrations of NH3 in excess 30 mg/L, or having concentrations of FOG in excess of 100 mg/L.

“Hydromechanical grease interceptor” means a device located inside a food service establishment designed to retain FOG from fixtures whose total capacity in gallons (gal) (L) shall not exceed two and one-half times the certified gallons per minute (gpm) (L/s) flow rate of the interceptor in accordance with the Uniform Plumbing Code. It is designed to collect, contain, or remove food wastes and FOG from the waste stream while allowing the balance of the liquid waste to discharge to the wastewater collection system by gravity or mechanical means.

Industrial User. See definition for “Nondomestic user.”

“Industrial waste” means any nondomestic waste, including, without limitation, solid, liquid, or gaseous waste resulting from any commercial, industrial, manufacturing, trade, health service, educational institution, business, laboratory, research establishment or facility, or from the development, recovery, or processing of natural resources.

“Industrial wastewater” means nondomestic wastewater, process wastewater or any liquid waste stream resulting from any commercial or industrial process; or from the development, recovery, or processing of natural resources.

“Instantaneous limit” means the maximum concentration of a pollutant allowed to be discharged at any time, determined from the analysis of a discrete (waste stream) sample. For analytes for which nondomestic users must take a grab sample for compliance purposes, this standard is the same as the daily maximum limit. For all other pollutants, the instantaneous limit shall be twice the daily maximum limit. For analytes for which nondomestic users must take a composite sample for compliance purposes, this standard is twice the daily maximum limit.

“Interference” means a discharge that, alone or in conjunction with discharge(s) from other sources, either: (1) inhibits or disrupts the POTW, its treatment processes or operations; (2) inhibits or disrupts the WWTF’s biosolids (sludge) processes, use or disposal; or (3) is a cause of a violation of the WWTF’s NPDES permit or of the prevention of sewage biosolids use or disposal in compliance with statutory and/or regulatory provisions or permits issued thereunder, or any more stringent state or local regulations, including but not limited to the following: Section 405 of the Act; the Solid Waste Disposal Act (SWDA), 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 SWDA; the Clean Air Act; the Toxic Substances Control Act. A discharge from a nondomestic user which causes a blockage resulting in a discharge at a point not authorized under the NPDES permit(s) is included in the definition of “interference.”

“Local limits” means effluent limitations developed for nondomestic users by the control authority to specifically protect the POTW from the potential for deleterious impacts including pass-through, interference, and the beneficial use of biosolids. Such limits shall be based on the POTW’s site-specific flow and loading capacities, receiving water considerations, and reasonable treatment expectations for nondomestic wastewater.

“Medical waste” means isolation wastes, infectious agents, human blood and blood products, pathological wastes, sharps, body parts, contaminated bedding, surgical wastes, potentially contaminated laboratory wastes, and dialysis wastes.

“Minor industrial user” or “MIU” means any nondomestic user or person that does not otherwise qualify as a significant industrial user of the POTW and is identified by the director as having the potential to discharge wastewater that, when taken into account with the wastewaters of other industrial users, may have a significant impact on the POTW.

“Monthly average” means the arithmetic mean of the effluent sample results collected during a calendar month or specified 30-day period. Where composite samples are required, grab samples taken for process control or by the control authority are not to be included in a monthly average.

“New source” means:

1. Any building, structure, facility, or installation from which there is (or may be) a discharge of pollutants, the construction of which commenced after the publication of proposed categorical pretreatment standards under Section 307(c) of the Act, which will be applicable to such source if such standards are thereafter promulgated in accordance with that section; provided, that:

a. The building, structure, facility, or installation is constructed at a site at which no other source is located;

b. The building, structure, facility, or installation totally replaces the process or production equipment that causes the discharge of pollutants at an existing source; or

c. 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.

2. 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 subsection (1)(a) or (c) of this definition but otherwise alters, replaces, or adds to existing process or production equipment.

3. Construction of a new source as defined under this definition has commenced if the owner or operator has:

a. Begun, or caused to begin, as part of a continuous on-site construction program:

i. Any placement, assembly, or installation of facilities or equipment; or

ii. Significant site preparation work including clearing, excavation, or removal of existing buildings, structures, or facilities that is necessary for the placement, assembly, or installation of new source facilities or equipment; or

b. Entered into a binding contractual obligation for the purchase of facilities or equipment, which are intended to be used in its operation within a reasonable time. Options to purchase agreements 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 definition.

“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. Noncontact cooling water may contain protective additives which may be deleterious to the POTW.

“Nondischarging categorical industrial user (NDCIU)” means any person that generates wastewater subject to a categorical pretreatment standard that does not discharge that wastewater subject to the categorical pretreatment standard to the POTW. NDCIUs are considered a potential source of indirect discharge.

“Nondischarging minor industrial user (NDMIU)” means any person that stores, handles, or manages volumes of liquid or sludge that is not discharged to the POTW. NDMIUs are considered a potential source of indirect discharge.

“Nondomestic user” means any person that does not qualify as a domestic user and is a source, or potential source, of discharge to the POTW. This includes but is not limited to food service establishments, auto-related businesses, medical facilities, commercial or industrial facilities, and warehouses.

“Nondomestic wastewater” means wastewater that is not domestic wastewater.

“Nonpolar FOG” means fats, oils or grease (FOG) in water or waste from a petroleum or mineral source as measured using analytical procedures established in 40 CFR 136.

“Notice of application” means a public notice of application filed in compliance with WAC 173-216-090.

“Oil/water separator (OWS)” means a pretreatment device with a large capacity underground vault installed between a drain serving a nonpolar FOG discharger and the connecting sewer pipe. These vaults are designed with baffles or coalescing plates to trap sediments and retain floating oils. The large capacity of the vault slows down the wastewater, allowing oil to float to the surface and solid material to settle on the bottom. Any customer that is a potential discharger of petroleum-based and/or nonpolar FOG is required to have an OWS.

Operation and Maintenance Manual. A detailed operation and maintenance manual is prepared for an industrial wastewater facility that includes mechanical components before completing the construction. The manual shall contain all components listed in WAC 173-240-150.

“Pass-through” means a discharge which exits the POTW into waters of the United States in quantities or concentrations which, alone or in conjunction with discharge(s) from other sources, is a cause of a violation of any requirement of the WWTF’s NPDES permit(s), 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, regardless of form; or their legal representatives, agents, or assignees. This definition includes all federal, state, and local governmental entities.

“pH” means the logarithm (base 10) of the reciprocal of the concentration of hydrogen ions expressed in standard units. pH is an expression of the intensity of the alkaline or acid condition of a liquid. The pH may range from zero to 14, where zero is most acid and 14 most alkaline.

“Plan review authority” means the authority granted to the control authority to review and approve all engineering reports, plans, and specifications for the construction of nondomestic wastewater treatment facilities before construction thereof may begin. No approval shall be given until the director is satisfied that said plans and specifications and the methods of operation and maintenance submitted are adequate to protect the quality of the state’s waters as provided for in RCW 90.48.110.

“Plans and specifications” means the detailed drawings and specifications used in the construction or modification of non-domestic wastewater facilities as provided in WAC 173-240-140. Except as otherwise allowed, plans and specifications are preceded by an approved engineering report. For some industrial facilities final conceptual drawings for all or parts of the system may be substituted for plans and specifications with the permission of the director.

“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. 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, and includes any 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, carbonaceous oxygen demand, 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; BMP or by other means, except not by diluting the concentration of the pollutants unless allowed by an applicable pretreatment standard.

“Pretreatment facility” means wastewater treatment equipment, unit, device, facility, or portions thereof designed for providing pretreatment of wastewater.

“Pretreatment requirement” means any substantive or procedural requirement related to pretreatment imposed on a nondomestic user, other than a pretreatment standard.

“Pretreatment standard” or “standard” means a discharge prohibition (SMC 13.18.300), categorical pretreatment standard (SMC 13.18.310), state pretreatment standard (SMC 13.18.320), local limit (SMC 13.18.330), and site-specific limit based on potential detrimental effects to the POTW, health and safety of staff and general public.

“Publicly owned treatment works (POTW)” means a treatment works, as defined by Section 212 of the Act (33 U.S.C. Section 1292), which is owned by the control authority or a contributing jurisdiction. 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.

“RV (recreational vehicle) waste” means liquid removed from waste holding tanks of recreational vehicles.

“Sampling facility” means a structure or sampling installation for the purpose of accurately measuring the volume or flow and sampling of wastewater, the design, location and operation of which must be approved by the director.

“Septage” means sewage and typically associated solids from domestic activities pumped from a septic tank serving one or more private residences, including wastes from chemical toilets, campers, or trailers.

“Sewage” means human excrement and gray water from household showers, toilets, kitchens, clothes and dish washing, and related domestic user activities.

Significant Industrial User or SIU.

1. Except as provided in subsection (2) of this definition, a significant industrial user is:

a. A nondomestic user subject to categorical pretreatment standards; or

b. A nondomestic user that:

i. Discharges an average of 25,000 gpd or more of process wastewater to the POTW (excluding sanitary, noncontact cooling, and boiler blowdown wastewater);

ii. Contributes a process waste stream which makes up five percent or more of the average dry weather hydraulic or organic capacity of the treatment plant; or

iii. Is designated as such by the director, on the basis that it has a reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement.

2. Upon a finding that a nondomestic user meeting the above criteria for a significant industrial user is not a categorical industrial user, or is a nondischarging categorical industrial user, and has no reasonable potential for adversely affecting the POTW’s operation or for violating any pretreatment standard or requirement, the director may at any time, on its own initiative or in response to a petition received from a nondomestic user, and in accordance with procedures in 40 CFR 403.8(f)(6), determine that such nondomestic user should not be considered a significant industrial user.

“Significant noncompliance” means:

1. Any violation of a pretreatment standard or requirement, including numerical limits, narrative standards, and prohibitions, that the director determines has caused, alone or in combination with other discharges, interference or pass-through, including endangering the health of POTW personnel or the general public.

2. Any discharge that has caused imminent endangerment to the public or to the environment or has resulted in the director’s exercise of its emergency authority to halt or prevent such a discharge.

3. Any violation(s), including of best management practices, which the director determines will adversely affect the operation or implementation of the local pretreatment program.

4. Chronic violations of wastewater discharge limits, defined here as those in which 66 percent or more of all of the measurements taken for the same pollutant parameter taken during a rolling six-month period, exceed, by any magnitude, a numeric pretreatment standard or requirement, including instantaneous limits of SMC 13.18.330.

5. Technical review criteria (TRC) violations, defined here as those in which 33 percent or more of wastewater measurements taken for each pollutant parameter during a rolling six-month period equal or exceed the product of the numeric pretreatment standard or requirement, including instantaneous limits, as defined by SMC 13.18.330, multiplied by the applicable criteria. Applicable criteria are 1.4 for BOD, TSS, fats, oils and grease, and 1.2 for all other pollutants except pH.

6. Failure to meet, within 90 days of 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.

7. Failure to provide any required report within 45 days after the due date. This includes initial and periodic monitoring reports, and reports on initial compliance and on meeting compliance schedules.

8. Failure to accurately report noncompliance.

“Slug load” or “slug discharge” means any discharge of a nonroutine, episodic nature, including but not limited to an accidental spill or a noncustomary batch discharge, which has a reasonable potential to cause interference or pass-through, or in any other way violate the POTW’s regulations, local limits or permit conditions. This includes discharges at a flow rate or concentration which could cause a violation of the prohibited discharge standards of SMC 13.18.300.

“Standard” means the same as pretreatment standard.

“Standard method” means the current version of Standard Methods for Examination of Water and Wastewater.

“State” means the state of Washington.

“Stormwater” means any flow occurring during or following any form of natural precipitation, and resulting from such precipitation, including snowmelt.

“Total suspended solids (TSS)” 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, as included in current EPA standard methods for the examination of water and wastewater.

“Wastewater” means any combination of 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.

“Wastewater treatment facility” means that portion of the POTW which is designed to provide treatment of municipal sewage and industrial waste. (Ord. 2895 § 1, 2024; Ord. 2839 § 1 (Exh. A), 2024)

Article III. General Sewer Use Requirements

13.18.300 Prohibited discharges standards.

A. General Prohibitions. No domestic or nondomestic user shall introduce or cause to be introduced into the POTW any pollutant or wastewater which causes pass-through or interference. These general prohibitions apply to all nondomestic users and domestic users of the POTW whether or not they are subject to categorical pretreatment standards or any other national, state, or local pretreatment standards or pretreatment requirements.

B. Specific Prohibitions. No domestic or nondomestic user shall introduce or cause to be introduced into the POTW any of the following pollutants, substances, or wastewater:

1. Pollutants which either alone or by interaction may create a fire or explosive hazard in the POTW, a public nuisance or hazard to life, or prevent entry into the sewers for their maintenance and repair or are in any way injurious to the operation of the system or operating personnel. This includes waste streams with a closed-cup flash point of less than 140 degrees Fahrenheit (60 degrees Celsius) using the test methods specified in 40 CFR Part 261.21, and wastewater causing any single reading over 10 percent of the lower explosive limit based on an explosivity meter reading at the point of discharge into the POTW or at any point in the POTW.

2. Gasoline, kerosene, naphthalene, benzene, toluene, xylene, ethers, alcohols, ketones, aldehydes, peroxides, chlorates, perchlorates, bromides, carbides, hydrides, sulfides, and any other substance that the control authority, the state, or the EPA has notified the nondomestic user is a fire hazard or hazard to the POTW.

3. Wastewater having a pH less than 6.0 or more than 9.0, or otherwise having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel. Discharges outside this pH range may be authorized by a permit issued by the director pursuant to a finding that the system is specifically designed to accommodate a discharge of that pH.

4. Solid or viscous substances in amounts which may cause obstruction to the flow in the sanitary sewer or other interference with the operation of the sanitary sewer system or POTW. In no case shall solids greater than one-quarter inch (0.64 cm) in any dimension be discharged. Specifically prohibited substances in amounts that produce interference include, but are not limited to: grease, animal guts or tissues, paunch manure, bones, hair, hides or fleshings, entrails, whole blood, feathers, ashes, cinders, sand, spent lime, stone or marble dusts, metal, glass, straw, shavings, grass clippings, rags, spent grains, spent hops, waste paper, wood, plastics, gas, tar asphalt residues, residues from refining or processing of fuel or lubricating oil, mud, or glass grinding or polishing wastes.

5. Pollutants, including oxygen-demanding pollutants (BOD, etc.), released in a discharge at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, will cause interference with the POTW.

6. Wastewater having a temperature which will interfere with the biological activity in the POTW, has detrimental effects on the collection system, or prevents entry into the sanitary sewer. In no case shall wastewater be discharged which exceeds 140 degrees Fahrenheit (60 degrees Celsius), or causes the wastewater temperature at the influent to the treatment plant to exceed 104 degrees Fahrenheit (40 degrees Celsius).

7. Pollutants which result in the presence of toxic gases, vapors, or fumes within the POTW in a quantity that may cause acute or chronic worker health and safety problems.

8. Septage other than RV waste discharged at an approved location.

9. Trucked or hauled pollutants, except at discharge points designated by the director and when specifically and expressly approved by the director.

10. The following are prohibited unless approved in writing by the director under extraordinary circumstances, such as lack of direct discharge alternatives due to combined sewer service or need to augment sewage flows due to septic conditions (as required under WAC 173-216-060):

a. Noncontact cooling water in significant volumes;

b. Stormwater, or other direct inflow sources;

c. Wastewaters significantly affecting system hydraulic loading, which do not require treatment or would not be afforded a significant degree of treatment by the POTW; and

d. Surface water, ground water, artesian well water, roof runoff, subsurface drainage, swimming pool drainage, condensate, deionized water, and unpolluted water, unless specifically authorized by the director.

11. Noxious or malodorous liquids, gases, solids, or other wastewater which, either singly or by interaction with other wastes, are sufficient to create a public nuisance or a hazard to life, or to prevent entry into the sanitary sewers for maintenance or repair.

12. Chlorine, bleach or other oxidants in quantities that cause interference to the POTW.

13. Wastewater which imparts color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consequently imparts color to the WWTF’s effluent.

14. Wastewater containing any radioactive wastes or isotopes except as specifically approved by the director, and in compliance with applicable federal or state regulations.

15. Sludges, screenings, or other residues from the pretreatment of industrial wastes.

16. Medical wastes, except as specifically authorized by the director.

17. Wastewater causing, alone or in conjunction with other sources, the WWTF’s effluent to fail a toxicity test.

18. Detergents, surface-active agents, or other substances in amounts that may cause excessive foaming in the POTW.

19. Any fats, oils, or greases, including but not limited to petroleum oil, nonbiodegradable cutting oil, or products of mineral oil, animal or vegetable origin in amounts that may cause obstructions or maintenance problems in the POTW.

20. Total petroleum hydrocarbon (nonpolar oil and grease) concentrations 100 parts per million, by weight, of fats, oil, greases, wax, whether emulsified or not, or containing substances which may solidify or become viscous at temperatures between 32 and 150 degrees Fahrenheit.

21. Any substance which will cause the WWTF to violate its NPDES and/or other disposal system permit(s).

22. Any dangerous, extremely hazardous, or hazardous wastes as defined in rules or regulations published by Ecology or by EPA, except as specifically approved by the director.

23. Any persistent pesticide and/or pesticides regulated by the Federal Insecticide Fungicide Rodenticide Act (FIFRA) as amended.

24. Any wastewater containing toxic pollutants in sufficient quantity, either singly or by interaction, to injure or create interference with any wastewater treatment process, constitute a hazard to humans or animals, or to exceed the limitation set forth in categorical pretreatment standards, or state or local pretreatment standards.

25. Any substance which may cause the WWTF’s effluent or treatment residues, sludges, or scums to be unsuitable for reclamation and reuse or which causes interference with the reclamation process. In no case shall a substance be discharged to the POTW that will cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed under Section 405 of the Act; or with any criteria, guidelines, or regulations affecting sludge use or disposal developed pursuant to the Solid Waste Disposal Act; or with the Clean Air Act, the Toxic Substances Control Act, or state pretreatment standards applicable to the sludge management method being used.

26. Any slug load, or any pollutant, including oxygen demanding pollutants, released in a single extraordinary discharge episode or in such volume or strength as to cause interference to the POTW; or released with a flow rate exceeding the permitted peak flow, or 10 percent of the capacity of the available trunk sewer, whichever is greater.

27. Wastewater that may cause a measurable or detectable decrease in WWTF effluent ultraviolet transmittance.

28. Antifreeze or a coolant solution used in a vehicle or motorized equipment, except as specifically approved by the director.

29. An enzyme, chemical, or other agent that allows fat, oil, grease, or a solid to pass through a pretreatment facility.

30. Wastewater that contains, or has contained, glutaraldehyde or ortho-phthalaldehyde unless it has been completely deactivated with sodium bisulfite or sodium hydroxide, has a pH of between 6.0 and 9.0 standard units, and does not contain any drain-clogging solids. The nondomestic user shall contact the director for review and obtain approval prior to discharge.

31. Backwash generated from filtration of process water or nondomestic wastewater.

32. All other wastes found by the director to be harmful to the POTW.

Pollutants, substances or wastewater prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the POTW. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.310 National categorical pretreatment standards.

The categorical pretreatment standards found at 40 CFR Chapter I, Subchapter N, Parts 405 through 471, are hereby incorporated by reference.

A. Where a categorical pretreatment standard is expressed only in terms of either the mass or the concentration of a pollutant in wastewater, the director may impose equivalent concentration or mass limits in accordance with subsections (E) and (F) of this section and 40 CFR Part 403.6(c).

B. Upon promulgation of a federal categorical pretreatment standard for a particular industrial subcategory, the federal standard, if more stringent, shall supersede the local limit imposed in these pretreatment regulations. If the local limit imposed in these pretreatment regulations is more stringent than the federal standard, then the local limit shall supersede the federal limit.

C. When categorical pretreatment standards are expressed in terms of a mass of pollutant which may be discharged per unit of production, the director may either impose limits based on mass or equivalent effluent concentrations. The nondomestic user must supply appropriate actual or projected long-term production rates for the unit of production specified in order to facilitate this process pursuant to 40 CFR Part 403.6(c)(2).

D. The director may allow wastewater subject to a categorical pretreatment standard to be mixed with other wastewaters prior to treatment. In such cases, the nondomestic user shall identify all categorical waste streams and provide sufficient information on each noncategorical waste stream to determine whether it should be considered dilute for each pollutant. Absent information showing that noncategorical waste streams contain the pollutant in question at levels above that of the supply water, such waste streams shall be considered dilute. In such situations, the director shall apply the combined waste stream formula as found at 40 CFR Part 403.6(e) to determine appropriate limits.

E. When a categorical pretreatment standard is expressed only in terms of pollutant concentrations, a nondomestic user may request that the limits be converted to equivalent mass limits. The director may establish equivalent mass limits if the nondomestic user meets all of the conditions set forth below.

1. To be eligible for equivalent mass limits, the nondomestic user must submit information with its permit application or permit modification request which:

a. Shows it has a pretreatment system which has consistently met all applicable pretreatment standards and has maintained compliance without using dilution;

b. Describes the water conserving practices and technologies it employs, or will employ, to substantially reduce water use during the term of its permit;

c. Includes the facility’s actual average daily flow rate for all waste streams from continuous effluent flow metering;

d. Determines an appropriate unit of production, and provides the present and long-term average production rates for this unit of production;

e. Shows that long-term average flow and production are representative of current operating conditions;

f. Shows that its daily flow rates, production levels, or pollutant levels do not vary so much that equivalent mass limits would be inappropriate; and

g. Shows the daily and monthly average pollutant allocations currently provided based on the proposed unit of production.

2. A nondomestic user subject to equivalent mass limits must:

a. Maintain and effectively operate control and treatment technologies adequate to achieve compliance with the equivalent mass limits;

b. Continue to record the facility’s flow by continuous effluent flow monitoring;

c. Continue to record the facility’s production rates;

d. Notify the director if production rates are expected to vary by more than 20 percent from the baseline production rates submitted according to subsection (E)(1)(d) of this section. The director may reassess and revise equivalent limits as necessary to reflect changed conditions; and

e. Continue to employ the same or comparable water conservation methods and technologies as those implemented pursuant to subsection (E)(1)(b) of this section so long as it discharges under an equivalent mass limit.

3. Equivalent mass limits:

a. Will not exceed the product of the actual average daily flow from regulated process(es) of the nondomestic user and the applicable concentration-based daily maximum and monthly average standards (and the appropriate unit conversion factor);

b. May be reassessed and the permit revised upon notification of a revised production rate, as necessary to reflect changed conditions at the facility; and

c. May be retained in subsequent permits if the nondomestic users’ production basis and other information submitted in subsection (E)(1) of this section is verified in their reapplication. The nondomestic user must also be in compliance with SMC 13.18.1420 regarding the prohibition of bypass.

F. The director may convert the mass limits of the categorical pretreatment standards of 40 CFR Parts 414 (organic chemicals), 419 (petroleum refining), and 455 (pesticide formulating, packaging, and repackaging) to concentration limits in permits for such nondomestic users. In such cases, the director will document the basis and the determination that dilution is not being substituted for treatment in the permit fact sheet.

G. The control authority is obliged under federal regulations to make the documentation of how any equivalent limits were derived (concentration to mass limits or vice versa) publicly available.

H. Once incorporated into its permit, the nondomestic user must comply with the equivalent limits in lieu of the categorical pretreatment standards from which they were derived.

I. The same production and flow estimates shall be used in calculating equivalent limits for the monthly (or multiple day average) and the maximum day.

J. Nondomestic users subject to permits with equivalent mass or concentration limits calculated from a production-based standard shall notify the director if production will significantly change. This notification is required within two business days after the nondomestic user has a reasonable basis to know that production will significantly change in the next calendar month. Nondomestic users who fail to notify the director of such anticipated changes must meet the more stringent of the equivalent limits or the nondomestic user’s prior limits. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.320 State pretreatment standards.

State pretreatment standards and requirements, located at chapter 173-216 WAC, were developed under authority of the state Water Pollution Control Act, chapter 90.48 RCW and are hereby incorporated by reference. The version incorporated is the version current as of the date of the latest revision or version of these regulations. All waste materials discharged from a commercial or industrial operation into the POTW must satisfy the provisions of chapter 173-216 WAC. In addition to more stringent prohibitions, the provisions described in subsections (A) through (J) of this section are unique to the state and are required by these regulations for discharges to a POTW.

A. Any person who constructs or modifies or proposes to construct or modify wastewater treatment facilities must first comply with the regulations for submission of plans and reports for construction of wastewater facilities, chapter 173-240 WAC. Nondomestic users shall request approval for such plans through the director. Prior to constructing or modifying wastewater treatment facilities, plans and reports as required by chapter 173-240 WAC must be approved by the director.

B. Nondomestic users shall apply to the director for a permit at least 120 days prior to the intended discharge of any pollutants (SMC 13.18.530) other than sewage or wastewater which the director has determined is similar in character and strength to normal domestic wastewater with no potential to adversely affect the POTW.

C. All significant industrial users must apply for and obtain a wastewater discharge permit prior to discharge.

D. All nondomestic users shall apply AKART to waste discharges to the waters of the state.

E. Discharge restrictions of chapter 173-303 WAC (Dangerous Waste) shall apply to all domestic and nondomestic users. Specific written approval from the control authority and Ecology is required prior to the discharge of dangerous wastes.

F. Claims of confidentiality shall be submitted according to WAC 173-216-080. Information which may not be held confidential includes: the name and address of applicant, description of proposal, proposed receiving water, receiving water quality, and effluent data. Claims shall be reviewed based on the standards of WAC 173-216-080, chapter 42.56 RCW, chapter 173-03 WAC, and RCW 43.21A.160.

G. Persons applying for a new permit or a permit renewal or modification which allows a new or increased pollutant loading shall publish notice for each application in the format provided by the director. Such notices shall fulfill the requirements of WAC 173-216- 090. These requirements include publishing:

1. The name and address of the applicant and facility/activity to be permitted;

2. A brief description of the activities or operations which result in the discharge;

3. Whether any tentative determination has been reached with respect to allowing the discharge;

4. The address and phone number of the office of the director where persons can obtain additional information;

5. The dates of the comment period (which shall be at least 30 days); and

6. How and where to submit comments or have any other input into the permitting process, including requesting a public hearing.

H. The director may require the applicant to also mail this notice to persons who have expressed an interest in being notified, to state agencies and local governments with a regulatory interest, and to post the notice on the premises. If the director determines there is sufficient public interest, the control authority or contributing jurisdiction, as appropriate, shall hold a public meeting following the rules of WAC 173-216-100. The director may assume responsibility for public notice requirements for any person and may waive this requirement for any nondomestic user not classified as a CIU, SIU, or MIU by the director.

I. Permit terms shall include, wherever applicable, the requirement to apply AKART.

J. All required monitoring data shall be analyzed by a laboratory registered or accredited under the provisions of chapter 173-50 WAC, except for flow, temperature, settleable solids, conductivity, pH, turbidity, and internal process control parameters. However, if the laboratory analyzing samples for conductivity, pH, and turbidity must otherwise be accredited, it shall be accredited for these parameters as well. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.330 Local limits.

A. The control authority has established and may periodically modify local limits pursuant to 40 CFR Part 403.5(c) based upon the POTW’s site-specific flow and loading capacities, receiving water considerations, and reasonable treatment expectations for nondomestic wastewater using a method approved by the director.

B. Unless the director determines that public health or safety require an earlier implementation, any modification the control authority establishes to the local limits in Table 330-1 shall not go into effect until 30 days after reasonable notice of the changes has been provided to the public and persons known to the control authority or contributing jurisdiction who may discharge wastewater containing analytes subject to such local limits.

C. The pollutant limits in Table 330-1 are established to protect against pass-through and interference and reflect the application of reasonable treatment technology. No nondomestic user shall discharge wastewater in excess of the daily maximum limits shown in Table 330-1 unless authorized in writing by the director.

D. The local limits shown in Table 330-1 apply at the point where the wastewater is discharged to the POTW. All concentrations for metallic substances are for total metal unless indicated otherwise. The director may impose mass limits in addition to, or in place of, concentration-based limits in accordance with SMC 13.18.310.

E. Significant industrial users and categorical industrial users shall also be subject to instantaneous limits (as determined by a grab sample) equal to twice the daily maximum concentration limit identified in Table 330-1 for any pollutant for which a composite sample is required in a permit. This provision is not applicable to SIUs and CIUs without the permit requirement to collect a composite sample for the analyte in question.

Table 330-1: Initial Local Limits (Subject to Director Modification)
Analyte	Daily Maximum Concentration Limit (mg/L)	Instantaneous Concentration Limit (mg/L)
Arsenic	0.14	0.28
Cadmium	0.12	0.24
Chromium	4.05	5.0
Copper	1.42	2.84
Cyanide	0.19	0.38
Lead	0.80	1.60
Mercury	0.030	0.060
Molybdenum	0.17	0.34
Nickel	0.83	1.66
Selenium	0.21	0.42
Silver	0.54	1.08
Zinc	1.93	3.86

F. No nondomestic user shall discharge wastewater in excess of the daily maximum limits shown in Table 330-2 unless authorized in writing by the director. The standard limits in Table 330-2 apply at the point where the wastewater is discharged to the POTW.

Table 330-2: Standard Limits
Analyte	Daily Maximum Concentration Limit
Total hydrocarbon-based fats, oil and grease	100 mg/L
Minimum pH	6.0 standard units
Maximum pH	9.0 standard units
Ammonia	30 mg/L
BOD	300 mg/L
TSS	300 mg/L

G. A high-strength user is any nondomestic user who, in any given month, discharges wastewater found to contain a monthly average of more than 50 pounds per day of biochemical oxygen demand and 50 pounds per day of total suspended solids. High-strength users shall be subject to charges as determined by the director and as amended and under the authority of these regulations up to any maximum loading limit.

H. The control authority shall use the individual permit process to establish ceiling limits for compatible pollutants and appropriate discharge limits for all other pollutants not listed in this section. This includes pollutants subject to regulation under RCRA, volatile or semi-volatile organic compounds, halogenated or brominated compounds, poly-aromatic hydrocarbons, polymers, surfactants, pesticide active ingredients, PFOS/PFOA, 6PPD-quinone and any other pollutant identified by the control authority.

I. The director may establish and require best management practices for any category of nondomestic user or type of industrial process which creates a nondomestic waste stream. Such requirements may be applied either in lieu of or in addition to the local limits in this section. BMPs may also include alternative limits which may be applied at the end of a specific process or treatment step instead of at the combined effluent.

J. Where a nondomestic user is subject to a categorical pretreatment standard and a local limit for a given pollutant, the more stringent provision shall control. (Ord. 2895 § 1, 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.340 Right of revision.

The control authority reserves the right to establish, by subsequent resolution or regulation, or in wastewater discharge permits or other control documents, more stringent standards, or requirements for any discharges to the POTW. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.350 Dilution.

No nondomestic user shall ever increase the use of process water, or in any way attempt to dilute a discharge, as a partial or complete substitute for adequate treatment to achieve compliance with a discharge limit unless expressly authorized by an applicable pretreatment standard or requirement. The director may impose mass limitations on nondomestic users where deemed appropriate to safeguard against the use of dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate. (Ord. 2839 § 1 (Exh. A), 2024)

Article IV. Pretreatment of Wastewater

13.18.400 Pretreatment facilities.

Nondomestic users shall provide wastewater pretreatment as necessary to comply with these regulations and shall achieve compliance with the pretreatment standards set out in these regulations within the time limitations specified by EPA, the state, or the control authority, whichever is more stringent. Any pretreatment facilities necessary for compliance shall be provided, operated, and maintained at the nondomestic user’s expense, and satisfy state requirements for review and approval of plans for wastewater facilities as described in SMC 13.18.320. Such plans (engineering report, plans and specifications, and operation and maintenance manuals) shall be submitted (as required by chapter 173-240 WAC) to the director for review and approval prior to construction. The review of such plans and operating procedures shall in no way relieve the nondomestic user from the responsibility of modifying such pretreatment facilities as necessary to produce a discharge acceptable to the director under the provisions of these pretreatment regulations. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.410 Additional pretreatment measures.

A. The director may immediately and effectively halt or prevent any discharge of pollutants to the POTW which reasonably appear to present an imminent endangerment to the health or welfare of POTW staff or the general public. In such cases, the director will provide the user advance notice if possible but shall not delay a response to imminent endangerment.

B. The director may halt or prevent any discharge to the POTW which presents or may present an endangerment to the environment, or which threatens to interfere with the operation of the POTW. In such cases, the director shall attempt to provide not only notice to the affected nondomestic user(s), but the opportunity to respond.

C. Any nondomestic user causing the director to exercise the emergency authorities provided for under subsections (A) and (B) of this section shall be responsible for reimbursement of all related costs to the control authority or contributing jurisdiction, as appropriate.

D. The director may require nondomestic users to reduce or curtail certain discharges to the POTW, designate that certain wastewater be discharged only into specific sewers, relocate and/or consolidate points of discharge, separate sewage waste streams from industrial waste streams, and take all other measures to protect the POTW and determine the nondomestic user’s compliance with the requirements of these pretreatment regulations.

E. The director, based on the determination that such facilities or devices are necessary for implementation of pretreatment requirements, may require any nondomestic user to install and maintain, on their property and at their expense, pretreatment facilities, devices and equipment that may include, but not be limited to, any of the following:

1. A sampling facility or sampling manhole, whichever the director deems appropriate, accessible to the control authority or contributing jurisdiction;

2. A suitable storage and/or flow equalization tank with representative sampling capabilities;

3. A grease interceptor, grease trap, solids separator, or oil/water separator;

4. An approved hazardous gas detection meter;

5. An amalgam separator and/or a silver recovery unit; or

6. Other pretreatment facilities, devices, equipment, and/or units as may be necessary to treat nondomestic wastewater prior to entering the POTW.

Nondomestic users installing any pretreatment facility or device shall ensure they are of the type and capacity approved by the director and conform to any separate requirements established by the control authority or contributing jurisdiction, as appropriate. Users shall locate pretreatment facilities or devices in areas easily accessible for cleaning and inspection by representatives of the director. Nondomestic users shall maintain pretreatment facilities or devices at all times to provide acceptable treatment of wastewater and to maintain compliance with pretreatment standards and requirements. Nondomestic users are responsible for all periodic inspection, cleaning, maintenance, and repair of such facilities.

F. Food Service Establishment. Nondomestic users who prepare and/or serve food or otherwise have potential to discharge fats, oils, or grease into the POTW shall be required to install grease interceptors located outside the building. The director may approve the installation of grease traps inside the building on a case-by-case basis under extraordinary circumstances. Nondomestic users may be required to retrofit grease interceptors that were constructed prior to the adoption of these regulations.

G. GI Design. GIs shall be designed, sized, constructed, and installed in accordance with control authority or contributing jurisdiction standards and the Uniform Plumbing Code (UPC). All fixtures, equipment, and drain lines located in a facility’s food preparation and cleanup areas shall be connected to a GI, unless specifically approved by the director. The following types of equipment or fixtures have been identified as potential sources of fats, oils and grease and shall be connected to a GI: pre-rinse and/or pre-wash sinks or sinks in dishwashing areas; two or three compartment sinks; wok stoves; self-cleaning stove ventilation/exhaust hood; kitchen floor drains; floor drains; floor sinks; mop sinks; food prep sinks; and hand sinks. Dishwashers may only be directed to GIs per director or manufacturer instructions. Dishwashers or other fixtures discharging emulsifying agents, such as detergents, shall be located such that their potential to adversely impact the GI operation is minimized. All drain lines shall have permanently fixed screens with maximum one-quarter-inch openings to prevent the pass-through of larger solids. Commercial food grinders and garbage disposals are not allowed. No sanitary waste shall be conveyed to the GI. A monitoring manhole shall be included on all GI installations.

H. GI Installation. GIs shall be installed such that they are easily accessible for inspection, cleaning, and the removal of fats, oils, grease and solid material. An accessible GI shall meet the following minimum criteria: the edge of the GI shall be flush with any edge of an overhead obstruction; and the overhead clearance shall be at least equal to the overall depth of the GI. GI access covers should be located such that the influent and effluent sanitary tee and compartment walls are accessible at all times for proper cleaning and inspection.

I. Cleaning and Maintenance. The director shall be authorized to establish routine maintenance schedules of pretreatment facilities or devices for the purpose of inspection, maintaining effective treatment and pollutant removal, and reducing pollutant loadings to the POTW. The control authority or contributing jurisdiction shall be allowed access to pretreatment facilities or devices for the purpose of inspection and/or to verify compliance with these regulations. Waste removed from a pretreatment facility or device shall not be disposed of in the POTW. A record of cleaning, maintenance or disposal activities shall be submitted to the director. The use of hot water, enzymes, bacteria, chemicals, or other agents for the purpose of causing the contents of a pretreatment facility or device to be discharged into the POTW is prohibited. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.420 Accidental discharge/slug discharge control plans.

The director may require any nondomestic user to develop and implement an accidental discharge/slug discharge control plan and take other actions the director believes are necessary to control discharges which may be caused by spills or periodic nonroutine activities. Accidental discharge/slug discharge control plans shall include at least the following:

A. A description of all discharge practices, including any nonroutine batch discharges such as from cleaning, replenishment, or disposal;

B. A description of all stored chemicals, disclosing all ingredients in formulations which could violate a discharge prohibition if discharged to the POTW;

C. The procedures for immediately notifying the director of any accidental discharge or slug discharge, as required by SMC 13.18.750; and

D. The procedures that will be taken to prevent the occurrence or adverse impact from any accidental or slug discharge. Such procedures shall address the inspection and maintenance of storage areas, handling and transfer of materials, loading and unloading operations, control of plant site runoff, worker training, building of containment structures or equipment, measures for containing toxic organic pollutants (including solvents), and/or measures and equipment for emergency response.

Nondomestic users shall notify the director immediately upon the occurrence of any accidental discharge or slug discharge of substances regulated by these regulations. The notification shall include location of discharge, date and time thereof, type of waste, concentration and volume, and corrective actions. Any nondomestic user that has an accidental discharge or slug discharge shall be liable for any expense, loss, or damage to the POTW, in addition to the amount of any fines imposed on the control authority or contributing jurisdiction on account thereof under these regulations, or state or federal law.

Within five days following an accidental discharge, the nondomestic user shall submit to the director a detailed written report describing the cause of the discharge and the measures to be taken by the nondomestic user to prevent similar future occurrences. Such notification shall not relieve the nondomestic user of any expense, loss, damage, or other liability that may be incurred as a result of damage to the POTW, fish kills, or any other damage to person or property; nor shall such notification relieve the user of any fines, civil penalties, or other liability that may be imposed under these regulations or other applicable law. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.430 Hauled wastewater.

A. Certain nondomestic wastes may be introduced into the POTW at locations designated by the director, and at such times as are established by the control authority. No septage may be discharged to the POTW. The hauler of approved wastes shall be responsible for ensuring that such wastes comply with all discharge prohibitions in SMC 13.18.300 through 13.18.340 and other applicable control authority or contributing jurisdiction requirements. Waste haulers are required to obtain wastewater discharge permits, other control documents, and/or provide a manifest at the time of discharge identifying the customer name, address, volume, and other information from each customer.

B. Fees for the discharge of hauled waste may be established as part of the fee system as authorized in SMC 13.18.1700 and 13.18.1710, as amended.

C. Haulers proposing to discharge site remediation wastewater shall comply with applicable pretreatment standards and requirements of these regulations and policies and guidelines as established by the control authority. Haulers proposing to discharge site remediation wastewater may be subject to fees based upon volume, treatability, handling, and administration.

D. The director shall require the hauler, and may also require the generator, of nondomestic waste to obtain a wastewater discharge permit or other control document. The director may also prohibit the disposal of any or all hauled industrial waste. The discharge of hauled industrial waste is subject to all applicable pretreatment standards and requirements of these pretreatment regulations and policies and guidelines as established by the control authority.

E. Industrial waste haulers may discharge loads only at locations designated by the director and with the prior consent of the director. The control authority may collect, or require the hauler to collect, samples of each hauled load to ensure compliance with applicable standards, and halt the discharge at any point in order to take or require additional samples or hold the load pending analysis. The director may require the industrial waste hauler to provide a waste analysis of any load prior to discharge, to characterize the waste, or to certify that the waste does not meet the definition of a hazardous waste under chapter 173-303 WAC.

F. Industrial waste haulers are required to provide a waste-tracking form for each load, unless exempted in writing by the director. The waste-tracking form may be required to include the following information:

1. Name and address of the industrial waste hauler;

2. Truck and driver identification;

3. Names and addresses of the sources of waste;

4. Type of industry, volume, brief description, known characteristics and presumed constituents of waste;

5. Any wastes which are designated hazardous wastes under RCRA; and

6. Any other information deemed necessary by the director. (Ord. 2895 § 1, 2024; Ord. 2839 § 1 (Exh. A), 2024)

Article V. Wastewater Discharge Permits and Control Documents

13.18.500 Industrial user screening form.

The control authority is obligated under federal law to identify and locate all possible nondomestic users which might be subject to the pretreatment standards, and to identify the character and volume of pollutants discharged by such nondomestic users. To satisfy this requirement, any possible nondomestic user of the POTW must, upon request of the director, periodically complete a nondomestic user screening form. Users of the POTW shall fully disclose the information requested and sign the completed form in accordance with SMC 13.18.550. Proper completion of nondomestic user screening requirements is a condition of initial and continued discharge to the POTW. Nondomestic users failing to fully comply with screening requirements within a time frame specified by the director shall be subject to all enforcement measures authorized under these regulations including termination of service. The director is authorized to prepare several forms for this purpose and require completion of the particular form which the director determines appropriate to provide the information needed to categorize each user. The director shall be authorized to categorize each nondomestic user, provide written notice of a nondomestic user’s categorization and what it means, and revise this categorization at any time. (Ord. 2895 § 1 (Exh. A), 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.510 Wastewater discharge permit requirement.

A. No significant industrial user shall discharge wastewater into the POTW without first obtaining an individual wastewater discharge permit from the director. A significant industrial user or nondomestic user that has filed a timely application pursuant to SMC 13.18.520 may continue to discharge unless and until notified otherwise by the director.

B. The director may require all other nondomestic users to obtain a wastewater discharge permit, control document, or implement best management practices as necessary to carry out the requirements or otherwise meet the intent of these pretreatment regulations. For example, a control document may be required solely for flow equalization or for a NDCIU.

C. Any failure to complete the required nondomestic user screening form, apply for and obtain a required permit or other control document, or violate the terms and conditions of a wastewater discharge permit or control document shall be deemed a violation of these pretreatment regulations and subject the nondomestic user to the sanctions set out in SMC 13.18.1100 through 13.18.1360. Obtaining a wastewater discharge permit or other control document does not relieve a nondomestic user of its obligation to comply with all federal and state pretreatment standards or requirements or with any other requirements of federal, state, and local law. (Ord. 2895 § 1 (Exh. A), 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.520 Wastewater discharge permitting – Existing connections.

A. Any nondomestic user required to obtain a wastewater discharge permit under these regulations who was discharging wastewater into the POTW prior to the effective date of these regulations may be required to apply to the control authority for a wastewater discharge permit in accordance with SMC 13.18.530. In such event, the nondomestic user shall not cause or allow discharges to the POTW to continue 270 days following the effective date of these regulations except in accordance with a wastewater discharge permit issued by the director. The time frames provided in this section may be extended at the director’s discretion. The director may authorize significant industrial users that are already permitted by Ecology to continue discharging to the POTW pursuant to such permit by reissuing such permit under a new permit number and cover page identifying the control authority as the issuer and administrator of the permit.

B. Any nondomestic user with an existing wastewater discharge approval proposing to make a change in an existing waste discharge, which will substantially change the volume of flow or the characteristics of the waste or establish a new point of discharge, shall apply for a new wastewater discharge approval 30 days prior to making the change. Substantial changes may include, but are not limited to, a 20 percent increase in the authorized daily maximum flow, addition of a new process, product, or manufacturing line that will increase or decrease the concentration of pollutants in the waste stream or require modification in the operation of the pretreatment system, addition of new pretreatment equipment, or alteration of a sample site. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.530 Wastewater discharge permitting – New connections.

Persons wishing to discharge industrial wastewater must first complete either a nondomestic user screening form (if they do not expect a permit is needed) or a permit application. Any nondomestic user identified by the control authority through the screening as potentially needing a permit must file a permit application. Applications for wastewater discharge permits, in accordance with SMC 13.18.540, must be filed at least 120 days prior to the desired date of discharge, and the discharge permit obtained prior to commencing discharge. (Ord. 2895 § 1 (Exh. A), 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.540 Wastewater discharge permit application contents.

A. All nondomestic users required to obtain a wastewater discharge permit must apply using a form provided by the control authority or contributing jurisdiction. Nondomestic users must supply the following information as part of the permit application if relevant to the nondomestic user’s operation unless waived by the director:

1. Identifying Information.

a. The name and physical address of the facility, the names of the operator/facility manager and owner, and the name and address of the point of contact; and

b. A description of activities, facilities, and plant production processes on the premises.

2. A list of any environmental control permits held by or for the facility.

3. A description of operations and facilities including:

a. A brief description of the operations, average rate of production, and industrial classification (SIC or NAICS codes) of the operation(s) conducted on site;

b. The number and type of employees, and proposed or actual hours of operation;

c. The type, amount, rate of production, and process used for each product produced;

d. The type and amount of raw materials used (average and maximum rates);

e. The raw materials and chemicals to be routinely stored at the facility (including products in rail cars and tank trucks located on site);

f. The types of wastes generated on a routine and periodic basis;

g. The times and durations when wastes will be discharged;

h. A schematic process diagram showing each process step, waste stream, treatment step, internal recycle, and point of discharge to the POTW. This diagram should identify which streams are subject to categorical pretreatment standards;

i. Site plans, floor plans, mechanical and plumbing plans, and details to show all sewers, floor drains, and appurtenances by size, location, and elevation, and all points of discharge;

j. The sampling locations and provisions for monitoring discharges; and

k. Copies of plans and reports for wastewater facilities as required under chapter 173-240 WAC (engineering report, plans and specifications, and an operations and maintenance manual).

4. Flow Data. The average daily and maximum daily flow, in gallons per day, to the POTW from each waste stream. Information shall be complete enough to allow use of the combined waste stream formula per SMC 13.18.310(D) and 40 CFR Part 403.6(e) where applicable.

a. Significant industrial users that are subject to categorical pretreatment standards shall submit information showing the measured average daily flow and maximum daily flow, in gallons per day, to the POTW from each of the following:

i. Regulated or manufacturing process streams; and

ii. Other streams as necessary to allow use of the combined waste stream formula of 40 CFR 403.6(e).

b. Significant industrial users that are not subject to categorical pretreatment standards shall submit information showing the measured average daily flow and maximum daily flow, in gallons per day, to the POTW from each of the following:

i. Total process flow, treatment plant flow, total plant flow, or individual manufacturing process flow as required by the control authority. The director may allow verifiable estimates of these flows where justified by cost or feasibility considerations.

5. Pollutant Data.

a. The categorical pretreatment standards applicable to each regulated process;

b. The results of sampling and analysis identifying the nature and concentration (and mass where required by the standard or the director) of regulated pollutants in the discharge from each regulated process; and

c. The estimated peak instantaneous, daily maximum, and long-term average discharge concentrations (and mass) based on the sampling results.

6. Sampling data to show samples are:

a. Representative of daily operations;

b. Taken just downstream from pretreatment facilities if such exist, or just downstream of the regulated process(es) if no pretreatment facilities exist;

c. Collected as required by SMC 13.18.800; and

d. Analyzed according to SMC 13.18.790.

7. Information Confirming BMPs. Where standards specify a BMP or pollution prevention alternative, the nondomestic user must include the information needed by the control authority or the applicable standard to determine whether BMPs are (or will be) implemented.

8. Any requests for a monitoring waiver (or a renewal of an approved monitoring waiver) for a pollutant neither present nor expected to be present in the discharge must include new sampling data showing (continued) absence of the pollutant in the raw wastewater and satisfying SMC 13.18.730(J).

9. Any other information deemed necessary by the director to prepare a discharge permit.

B. Incomplete or inaccurate applications will not be processed and will be returned to the nondomestic user for revision. The control authority and the director shall be held harmless for delays caused by returned applications. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.550 Application and screening signatories and certifications.

A. All wastewater discharge permit applications and reports shall be signed by an authorized representative of the nondomestic user and contain the certification statement in SMC 13.18.830(A).

B. All nondomestic user screening forms shall be signed by an authorized representative of the nondomestic user and may contain the certification statement in SMC 13.18.830(A).

C. Nondomestic users shall submit a new authorization if the designation of an authorized representative of the nondomestic user is no longer accurate. This includes when a different individual or position has responsibility for the overall operation of the facility, or overall responsibility for environmental matters for the company. The nondomestic user must submit the new authorization to the director prior to or with any reports to be signed by the new authorized representative of the nondomestic user. (Ord. 2895 § 1 (Exh. A), 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.560 Wastewater discharge permit decisions.

After receipt of a complete wastewater discharge permit application, the director will determine whether or not to issue a wastewater discharge permit. The director may deny any application for a wastewater discharge permit or require additional safeguards (including the installation of pretreatment facilities or plant or process modifications), or reports (including plans under chapter 173-240 WAC), or information as a condition for approval. For nondomestic users not meeting the criteria of significant industrial users, the director may also waive or defer a permit, or allow discharges in the interim while a permit is being prepared.

As a condition of an approval, the director may require the nondomestic user to install pretreatment facilities or make plant or process modifications as deemed necessary by the director to meet the requirements of these regulations and applicable federal and state standards. Such facilities or modifications shall be designed, installed, constructed, operated, and maintained at the nondomestic user’s expense in accordance with the provisions of these pretreatment regulations, and in accordance with the rules and regulations of all local and governmental agencies. If additional pretreatment and/or operation and maintenance will be required to meet the applicable pretreatment standards, the nondomestic user shall submit a proposed schedule with the shortest feasible timeline, not to exceed three years, to be reviewed and approved by the director, by which the nondomestic user will provide such additional pretreatment and/or operation and maintenance. The schedule shall conform to the requirements of SMC 13.18.700(C)(4). The completion date in this schedule shall not be later than the compliance date established pursuant to SMC 13.18.700(C)(4). (Ord. 2839 § 1 (Exh. A), 2024)

Article VI. Wastewater Discharge Permit Issuance

13.18.600 Wastewater discharge permit duration.

The director may issue a wastewater discharge permit for a period of up to five years from its effective date. Each wastewater discharge permit will indicate its expiration date. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.610 Wastewater discharge permit contents.

Wastewater discharge permits will include conditions the director deems reasonably necessary to carry out the goals of SMC 13.18.010, federal and state regulations, and the requirements of these pretreatment regulations. In addition to the permit information contents below, all permitted users shall at all times be responsible for the proper operation and maintenance of any facilities or systems of control installed by the permitee to achieve compliance with the terms of conditions of the permit.

A. Significant industrial user and categorical industrial user wastewater discharge permits will contain the following information:

1. The permit issuance date, expiration date, and effective date;

2. A statement that the wastewater discharge permit is nontransferable without prior notification to the director in accordance with SMC 13.18.640, and provisions for furnishing the new owner or operator with a copy of the existing wastewater discharge permit;

3. Effluent limits, including best management practices, based on applicable pretreatment standards and requirements to apply AKART (see SMC 13.18.320(I));

4. The pollutants to be monitored and specific monitoring, record keeping and reporting requirements. This includes the sampling location(s), sampling frequencies, sampling custody records, and sample types consistent with federal and state law and these pretreatment regulations, and the requirement that monitoring data be analyzed by a laboratory registered or accredited under the provisions of chapter 173-50 WAC;

5. Requirements to submit certain reports (as reflected in Article VII, Reporting Requirements), including submittal and approval of plans, reports and manuals as required by chapter 173-240 WAC, and to provide various notifications, keep records, and if required, implement best management practices;

6. The process to be used to request a waiver from monitoring for a pollutant neither present nor expected to be present in the discharge in accordance with SMC 13.18.730(J), or a specific waived pollutant in the case of an individual permit;

7. A statement of applicable civil and criminal penalties for violation of pretreatment standards and requirements, any applicable compliance schedule, falsification of reports or tampering with sampling equipment. Such schedule may not extend the time for compliance beyond that required by applicable federal, state, or local law;

8. Requirements to control slug discharges, including to develop, update, and implement slug discharge control plans (see SMC 13.18.420 for required content) where the director determines such plans are necessary to prevent accidental, unanticipated, or nonroutine discharges;

9. Any monitoring, which has been conditionally waived by the director according to SMC 13.18.730(J) but which automatically applies at any time the requirements of the conditional waiver are not met;

10. Requirement for immediate notification to the director where self-monitoring results indicate noncompliance;

11. Requirement to immediately take action to stop, contain, and clean up a bypass, slug discharge, or any other unauthorized discharge, immediately notify the director, and submit a written report to the director within 30 days of the occurrence, as required by chapter 173-216 WAC;

12. Requirement to submit permit application for the renewal of a permit at least 60 days prior to expiration of permit;

13. Permit modification requirements, as described in SMC 13.18.630;

14. Permit revocation provisions, as described in SMC 13.18.650.

B. Wastewater discharge permits may contain, but need not be limited to, the following additional conditions:

1. Pretreatment facilities and measures required by SMC 13.18.400 and 13.18.410;

2. Limits on the average and/or maximum rate of discharge, time of discharge, and/or requirements for flow regulation and equalization;

3. Requirements to install pretreatment technology, pollution controls, or to construct appropriate containment devices to reduce, eliminate, or prevent the introduction of pollutants into the treatment works, ground, or stormwater;

4. Requirements to develop and implement waste minimization plans to reduce the amount of pollutants discharged to the POTW;

5. Requirements to pay charges or fees for discharge to the POTW including high-strength charges;

6. Requirements to install, maintain, and properly operate inspection, sampling, and pretreatment facilities and equipment, including flow measurement devices;

7. Notice that compliance with the wastewater discharge permit does not relieve the permittee of responsibility for compliance with all applicable federal and state pretreatment standards, including those which become effective during the term of the wastewater discharge permit; and

8. Other conditions as deemed appropriate by the director to ensure compliance with these pretreatment regulations, and federal and state laws, rules, and regulations.

C. Other nondomestic user control mechanisms may contain, as determined by the director, the information specified in SMC 13.18.540(A) and (B). (Ord. 2839 § 1 (Exh. A), 2024)

13.18.620 Permit issuance process.

A. Public Notice. Nondomestic users shall follow the procedures for public notice found in SMC 13.18.320(G) and (H). The director shall consider and respond to public input as appropriate prior to issuance of a permit. The director will arrange a public meeting if properly requested and if there is sufficient public interest, pursuant to WAC 173-216-100.

B. Permit Appeals. Any person, including the nondomestic user, may petition the director to reconsider the terms of a wastewater discharge permit within 30 days of the date of its issuance.

1. Failure to submit a timely petition for review shall be deemed to be a waiver of the administrative appeal.

2. In its petition, the appealing party must indicate the wastewater discharge permit provisions objected to, the reasons for this objection, and the alternative condition(s), if any, it seeks to place in the wastewater discharge permit.

3. The effectiveness of the wastewater discharge permit shall not be stayed pending the appeal.

4. If the director fails to act within 30 days, a request for reconsideration shall be deemed to be denied. Decisions not to reconsider a wastewater discharge permit, not to issue a wastewater discharge permit, or not to modify a wastewater discharge permit shall be considered final administrative actions for purposes of judicial review.

5. Aggrieved parties seeking judicial review of the final administrative wastewater discharge permit decision must do so by filing a complaint with the superior court of Pierce County within 30 days of final agency action and properly served upon the control authority or contributing jurisdiction. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.630 Wastewater discharge permit modification.

The director may modify a wastewater discharge permit or other control document for good cause, including, but not limited to, any of the following reasons:

A. To incorporate any new or revised federal, state, or local pretreatment standards or requirements including new or revised local limits;

B. To address new or changed operations, processes, production rates, waste streams, or changes in water volume or character;

C. To reflect conditions at the POTW requiring an authorized discharge to be reduced or curtailed. Such requirements may be either temporary or permanent;

D. Based on information that indicates a permitted discharge poses a threat to POTW or staff, the receiving waters, or to violate a prohibition of these pretreatment regulations;

E. To address violations of any terms or conditions of the wastewater discharge permit;

F. To address misrepresentations or failure to fully disclose all relevant facts in the wastewater discharge permit application or in any required report;

G. To incorporate revisions based on a variance from categorical pretreatment standards approved pursuant to 40 CFR Part 403.13;

H. To correct typographical or other errors in the wastewater discharge permit; or

I. To reflect a transfer of the facility ownership or operation to a new owner or operator as required under SMC 13.18.640. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.640 Wastewater discharge permit transfer.

Wastewater discharge permits may be transferred to a new owner or operator only if the permittee gives at least 30 days’ advance notice to the director and the director approves the wastewater discharge permit transfer. Failure to provide advance notice of a transfer renders the wastewater discharge permit void as of the date of facility transfer. The notice to the director must include a written certification by the new owner or operator which:

A. States that the new owner and/or operator have no immediate intent to change the facility’s operations and processes;

B. Identifies the specific date on which the transfer is to occur; and

C. Acknowledges full responsibility for complying with the existing wastewater discharge permit.

Provided that the notice required above occurs and that there were no significant changes to the manufacturing operation or wastewater discharge, the new owner will be considered an existing connection per SMC 13.18.520 and be covered by the existing limits and requirements in the previous owner’s discharge approval. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.650 Wastewater discharge permit revocation.

The director may terminate or revoke a wastewater discharge permit or other control document for good cause, including, but not limited to, when a nondomestic user has:

A. Failed to notify the director of significant changes to the wastewater prior to the changed discharge;

B. Failed to provide prior notification to the director of changed conditions pursuant to SMC 13.18.740;

C. Misrepresented or failed to fully disclose all relevant facts in the wastewater discharge permit application;

D. Falsified self-monitoring reports or tampered with monitoring equipment;

E. Refused to allow the control authority timely access to the facility premises and records;

F. Failed to meet effluent limitations or permit conditions;

G. Failed to pay applicable fines or sewer charges;

H. Failed to meet compliance schedule deadline dates;

I. Failed to complete a wastewater nondomestic user screening form or wastewater discharge permit application;

J. Failed to provide advance notice of the transfer of business ownership;

K. Violated any pretreatment standard or requirement, or any terms of the wastewater discharge permit or these regulations;

L. Ceased operations; or

M. Transferred business ownership.

Prior wastewater discharge permits issued to a nondomestic user are void upon the effective date of the new wastewater discharge permit issued to that nondomestic user. (Ord. 2895 § 1 (Exh. A), 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.660 Wastewater discharge permit reissuance.

A nondomestic user with a wastewater discharge permit due to expire shall apply for wastewater discharge permit reissuance by submitting a complete permit application, in accordance with SMC 13.18.540, a minimum of 120 days prior to the expiration of the nondomestic user’s existing wastewater discharge permit. A nondomestic user, whose existing permit or control document has expired, and has submitted its reapplication in the time period specified herein, shall be deemed to have an effective permit or control document until the director issues or denies the new permit or control document. The director may waive the time limit for submittal of a reissuance application, for good cause shown. (Ord. 2839 § 1 (Exh. A), 2024)

Article VII. Reporting Requirements

13.18.700 Baseline monitoring reports.

A. When categorical pretreatment standards for an industry category are published (promulgated), nondomestic users that perform that process and either currently discharge or are scheduled to discharge wastewater from the process to the POTW must submit a baseline monitoring report to the director. This report must contain the information listed in subsection (C) of this section. The report is due within 180 days after the effective date of a categorical pretreatment standard, unless the final administrative decision on a category determination comes later.

B. Nondomestic users that wish to begin discharging wastewater to the POTW from operations subject to categorical pretreatment standards after EPA has published the standards (called New Source Review) shall submit a baseline monitoring report to the director containing the information listed in subsection (C) of this section. However, for new sources, the report must be provided at least 120 days before desiring to discharge. New sources shall describe the method of pretreatment they intend to use to meet applicable categorical pretreatment standards. Because monitoring data will not be available for proposed facilities, new sources instead must provide estimates of the anticipated flow rates and quantity of pollutants to be discharged.

C. The baseline monitoring report shall include the following information:

1. All information required in SMC 13.18.540(A)(1) through (A)(9).

2. Additional conditions for existing sources measuring pollutants.

a. Nondomestic users shall take a minimum of three representative samples to compile the data for the baseline monitoring report.

b. Nondomestic users shall take samples immediately downstream from pretreatment facilities if such exist or immediately downstream from the regulated process if no pretreatment exists. If the nondomestic user mixes other wastewaters with the regulated wastewater prior to pretreatment, the nondomestic user must provide the flows and concentrations necessary to apply the combined waste stream formula of SMC 13.18.310(C) and 40 CFR Part 403.6(e). Where the nondomestic user wants an alternate concentration or mass limit, and it is allowed by federal rules at 40 CFR Part 403.6(e), the user shall propose the adjusted limit and provide supporting data to the control authority.

c. Sampling and analysis shall be performed in accordance with SMC 13.18.800 (Sample collection), and 13.18.790 (Analytical requirements).

d. The director may allow the report to use only historical data if the data is good enough to allow the evaluation of whether (and which) industrial pretreatment measures are needed.

e. The baseline monitoring report shall indicate the time, date, and place of sampling and methods of analysis. The user shall certify that the sampling and analysis presented is representative of normal work cycles and expected pollutant discharges to the POTW.

3. Compliance Certification. A statement, reviewed by the authorized representative of the nondomestic user and certified by a qualified professional experienced in the design, construction, and operation of pretreatment facilities indicating whether pretreatment standards are being met on a consistent basis, and, if not, whether additional operation and maintenance (O&M) and/or additional pretreatment steps are required to meet the pretreatment standards and requirements.

4. Compliance Schedule. While new sources must install the treatment required to meet the pretreatment standards prior to operation, existing sources may be granted a compliance schedule where they must provide additional pretreatment and/or O&M to meet the pretreatment standards. In such cases, the nondomestic user shall propose the shortest schedule by which they can provide the additional pretreatment and/or O&M. The completion date which the nondomestic user proposes in this schedule may not be later than the compliance date established for the applicable pretreatment standard. Any compliance schedule authorized pursuant to this section must also meet the requirements set out in SMC 13.18.710.

5. Signature and Report Certification. All baseline monitoring reports must be certified in accordance with SMC 13.18.830(A) and signed by an authorized representative of the user. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.710 Compliance schedule progress reports.

The following conditions shall apply to compliance schedules proposed by existing sources according to SMC 13.18.700(C)(4) and incorporated into permits:

A. The schedule shall contain progress increments in the form of dates for the commencement and completion of major events leading to the construction and operation of additional pretreatment required for the nondomestic user to meet the applicable pretreatment standards (such events include, but are not limited to, hiring an engineer, completing preliminary and final plans, executing contracts for major components, commencing and completing construction, and beginning and conducting routine operation);

B. No increment referred to above shall exceed nine months;

C. The nondomestic user shall submit a progress report to the director no later than 14 days following each date in the schedule and the final date of compliance including, as a minimum, whether or not it complied with the increment of progress, the reason for any delay, and, if appropriate, the steps being taken by the user to return to the established schedule; and

D. In no event shall more than nine months elapse between such progress reports to the director. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.720 Reports on compliance with categorical pretreatment standards deadline.

Both existing sources and new sources must submit a report on whether compliance has been initially achieved. For existing sources, the report is due 90 days after the date applicable categorical pretreatment standards give as the final compliance date. For a new source, the report is due 90 days after starting to discharge to the POTW.

In both cases, the report must contain the information described in SMC 13.18.540(A)(3) through (A)(6). For existing sources, it must also contain the compliance certification of SMC 13.18.700(C)(3) and, if needed, the compliance schedule described in SMC 13.18.700(C)(4). Nondomestic users subject to equivalent mass or concentration limits, as allowed by SMC 13.18.310, must include a reasonable measure of their long-term production rate. Other nondomestic users subject to standards based on a unit of production (or other measure of operation) must include their actual production during the sampling period. All compliance reports must be signed and certified in accordance with SMC 13.18.830(A). (Ord. 2839 § 1 (Exh. A), 2024)

13.18.730 Periodic compliance reports.

A. The director may specify the necessary minimum sampling and reporting frequencies and include applicable requirements in permits. Significant industrial users (SIUs) must:

1. Report at least twice a year, in June and December, unless otherwise specified;

2. Report the flows and concentrations for the reporting period of regulated pollutants in all discharges subject to pretreatment standards;

3. Report average and maximum daily flows for the reporting period and identify where flow estimates are used; and

4. Include the documentation needed to show compliance with applicable BMPs, pollution prevention alternatives, maintenance, treatment, or record keeping requirements.

B. Nondomestic users must sign and certify all periodic compliance reports in accordance with SMC 13.18.830(A).

C. Nondomestic users must take wastewater samples which are representative of their range of discharge conditions and of any discharge not disclosed in their permit application. Nondomestic users must properly operate, clean, and maintain sampling and flow metering facilities and devices and ensure they function properly. The director will not allow nondomestic user claims that sampling results are unrepresentative due to a nondomestic user’s failure to meet this requirement, without extenuating circumstances approved by the director.

D. Nondomestic users subject to the reporting requirements in this section must report any additional monitoring which might determine compliance with permit requirements. This includes any additional monitoring of regulated pollutant at their respective effluent monitoring locations using procedures prescribed in SMC 13.18.800. In such cases, the results of this monitoring shall be included in periodic monitoring reports.

E. If a nondomestic user sampled and analyzed more frequently than was required by the director or by these regulations, using methodologies in 40 CFR Part 136, it must submit all results of sampling and analysis of the discharge during the reporting period.

F. Any nondomestic user subject to equivalent mass or concentration limits established by the director or by unit production limits specified in the applicable categorical pretreatment standards shall report production data as outlined in SMC 13.18.310(E).

G. Zero discharge nondomestic users shall submit periodic reports as required by the director stating that no industrial wastewater has been discharged to the POTW.

H. If the director calculated limits to factor out dilution flows or nonregulated flows, the nondomestic user will be responsible for providing flows from the regulated process flows, dilution flows and nonregulated flows.

I. Flows shall be reported on the basis of actual measurement; however, the director may accept reports of average and maximum flows estimated by verifiable techniques if the director determines that an actual measurement is not feasible.

J. The director may authorize a categorical industrial user to forego sampling of a pollutant regulated by a categorical pretreatment standard when it is not present in raw wastewater; provided, that:

1. The CIU submits a request for the waiver with their permit application or reapplication;

2. The CIU analyzes a sample (or samples) representative of all wastewater from all processes before any treatment and includes all results with the request;

3. The CIU demonstrates through source water and untreated process water sample results that the pollutant never exceeds intake water levels. (Pollutants simply reduced by treatment to background levels are ineligible for the waiver.);

4. The CIU shows, where nondetectable sample results are returned as provided in subsection (B) or (C) of this section, that they used the method from 40 CFR Part 136 with the lowest detection level;

5. The authorized representative of the user signs the request using the certification statement;

6. The CIU includes in routine monitoring reports a statement certifying that there has been no increase in the pollutant in its waste stream due to activities of the industrial user; and

7. The CIU reports and immediately resumes the monitoring, which would otherwise have been required upon discovering that a waived pollutant is present or expected to be present based on changes to the user’s operations.

K. The director will document the reasons supporting the waiver in the permit fact sheet, and keep any information submitted by the nondomestic user and the fact sheet for three years after the waiver expires. Monitoring waivers are valid after being incorporated in a nondomestic user’s permit. The waiver is in effect while the permit is effective. The director may cancel a monitoring waiver at any time for cause. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.740 Reports of changed conditions.

Each nondomestic user must notify the director of any substantial changes to the nondomestic user’s operations or system which might alter the nature, quality, or volume of its wastewater. This notification must be made at least 30 days before the desired change and be sent to the director. In such cases:

A. The director may require the user to submit any information needed to evaluate the changed condition. The director may also require a new or revised wastewater discharge permit application under SMC 13.18.540; and

B. The director may issue, reissue, or modify a wastewater discharge permit applying the procedures of Article VI of these regulations in response to a user’s notice under this section. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.750 Reports of potential problems.

A. Any nondomestic user which has any unusual discharge that could cause problems to the POTW must immediately notify the director by telephone of the incident. This notification shall include the location of the discharge, type of waste, concentration, and volume, if known, and corrective actions taken by the nondomestic user to control and curtail the discharge. Such discharges may include spills, slug loads, accidental discharges, or other discharges of a nonroutine, episodic nature. Problems to the POTW which require reporting under this section include violating pretreatment requirements, pretreatment standards, or other requirements of Article III of these pretreatment regulations such as vapor toxicity and explosivity limits.

B. Within five days following such discharge, the nondomestic user shall submit a detailed written report describing the cause(s) of the discharge and the measures to be taken by the user to prevent similar future occurrences. Such notification shall not relieve the nondomestic user of any expense, loss, damage, or other liability which may be incurred as a result of damage to the POTW, natural resources, or any other damage to person or property; nor shall such notification relieve the nondomestic user of any fines, penalties, or other liability which may be imposed pursuant to these pretreatment regulations.

C. Nondomestic users required to submit an accidental discharge/slug discharge control plan (per SMC 13.18.420) shall post notice in a prominent location advising employees who to call at the POTW to inform the director of a potential problem discharge (subsection (A) of this section). Nondomestic users shall ensure that all employees who may cause or witness such a discharge are advised of the emergency notification procedures.

D. All nondomestic users must immediately notify the director of any changes at their facility which might increase their potential for a slug discharge. This includes increasing the volume of materials stored or located on site which, if discharged to the POTW, would cause problems. Nondomestic users required to prepare an accidental discharge/slug discharge control plan under SMC 13.18.420 shall also modify their plans to include the new conditions prior to, or immediately after, making such changes. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.760 Reports of unpermitted users.

All nondomestic users not required to obtain a wastewater discharge permit shall provide appropriate reports to the director as the director may require. This may include, but not be limited to, periodically completing and signing nondomestic user screening forms, monitoring reports, and reports regarding compliance with best management practices. (Ord. 2895 § 1 (Exh. A), 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.770 Notice of violation – Repeat sampling and reporting.

If sampling performed by a nondomestic user indicates a violation, the user must notify the director within 24 hours of becoming aware of the violation. The nondomestic user shall also repeat the sampling and analysis and submit the results of the repeat analysis to the director within 30 days after becoming aware of the violation. The director may waive the repeat sampling requirement where the control authority or contributing jurisdiction has sampled the effluent for the pollutant in question prior to the nondomestic user obtaining sampling results. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.780 Notification of the discharge of hazardous waste.

A. Any nondomestic user that proposes to discharge any volume of hazardous waste as defined in 40 CFR Part 261 (listed or characteristic wastes) or dangerous waste as defined in chapter 173-303 WAC, or any facility that proposes to discharge any amount of acutely hazardous wastes as specified in 40 CFR 261.30(d) and 261.33(e), is required to provide a request in writing to the director. Discharging such waste without the director’s approval as provided herein is prohibited. The request shall be provided with the initial wastewater discharge approval application and repeated with each subsequent reapplication.

B. Any nondomestic user who discharges any substance which, if otherwise disposed of, would be a hazardous waste under 40 CFR Part 261 or chapter 173-303 WAC must also comply with the following requirements:

1. Notify the director, the EPA Region 10 Office of Air, Waste, and Toxics director, and state hazardous waste authorities, in writing, of the discharge. Maintain a copy of this notification and include it in all subsequent permit applications or reapplications under these pretreatment regulations.

2. Include the following information in the notification:

a. The name of the hazardous waste as found in 40 CFR Part 261;

b. The EPA hazardous waste number; and

c. The type of discharge (continuous, batch, or other).

3. If the discharge totals more than 220 pounds of hazardous waste in any month, also provide:

a. The hazardous constituents contained in the wastes;

b. An estimate of the mass and concentration of hazardous constituents in the waste stream discharged during that calendar month; and

c. An estimate of the mass of constituents in the waste stream expected to be discharged during the following 12 months.

4. This notice shall be repeated for new or increased discharges of substances subject to this reporting requirement.

5. All notifications must take place prior to discharging a substance for which these reporting requirements apply. If this is not possible, the notice must be provided as soon after discharge as practical and describe why prior notice was not possible.

6. Nondomestic users must provide notifications under this section only once to EPA and the state for each hazardous waste discharged. However, all of the information of these notices shall be repeated in each new permit application submitted under these pretreatment regulations.

7. This requirement does not relieve the nondomestic user from requirements to provide other notifications, such as of changed conditions under SMC 13.18.540, or applicable permit conditions, permit application requirements, and prohibitions.

8. Pollutants that are reported under the reporting requirements for categorical industrial users in baseline monitoring, final and periodic compliance reports are not subject to the notification requirements in this section.

C. Nondomestic users must report all discharges of more than 33 pounds per month of substances which, if otherwise disposed of, would be hazardous wastes. Nondomestic users must also report any discharge of acutely hazardous wastes as specified in 40 CFR 261.30(d) and 261.33(e). Subsequent months during which the nondomestic user discharges more of a hazardous waste for which notice has already been provided do not require another notification to EPA or the state but must be reported to the director.

D. If new regulations under RCRA describe additional hazardous characteristics or substances as a hazardous waste, the nondomestic user must provide notifications under subsection (A) of this section, if required by subsection (B) of this section, within 90 days of the effective date of such regulations.

E. For any notification made under this section, the nondomestic user shall certify that it has a program in place to reduce the volume and toxicity of hazardous wastes generated to the degree it has determined to be economically practical and shall describe that program and reductions obtained through its implementation.

F. This provision does not create a right to discharge any substance not otherwise permitted to be discharged by these pretreatment regulations, a permit issued thereunder, or any applicable federal or state law. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.790 Analytical requirements.

All pollutant sampling and analyses required under these pretreatment regulations shall conform to the most current version of 40 CFR Part 136, unless otherwise approved by the director or specified in an applicable categorical pretreatment standard. If 40 CFR Part 136 does not contain sampling or analytical techniques for a pollutant, or the director determines that the 40 CFR Part 136 sampling and analytical techniques are inconsistent with the goal of the sampling, the director may specify an analytical method. If neither case applies, users shall use validated analytical methods or applicable sampling and analytical procedures approved by EPA. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.800 Sample collection.

Nondomestic users must ensure all samples they collect to satisfy sampling requirements under these pretreatment regulations are representative of the range of conditions occurring during the reporting period. Nondomestic users must also ensure that, when specified, samples are collected during the specific period.

A. Nondomestic users must use properly cleaned sample containers appropriate for the sample analysis and sample collection and preservation protocols specified in 40 CFR Part 136 and appropriate EPA guidance.

B. Nondomestic users must obtain samples for oil and grease, temperature, pH, cyanide, total phenols, sulfides, and volatile organic compounds using grab sample collection techniques.

C. For certain pollutants, nondomestic users may composite multiple grab samples taken over a 24-hour period. Nondomestic users may composite grab samples for cyanide, total phenols, and sulfides either in the laboratory or in the field and may composite grab samples for volatile organics and oil and grease in the laboratory prior to analysis.

D. For all other pollutants, nondomestic users must employ 24-hour flow-proportional composite samplers unless the director authorizes or requires an alternative sample collection method.

E. The director may authorize composite samples for parameters unaffected by the compositing procedures, as appropriate.

F. The director may require grab samples either in lieu of or in addition to composite sampling to show compliance with instantaneous discharge limits.

G. In all cases, nondomestic users must take care to ensure the samples are representative of their wastewater discharges.

H. Nondomestic users sampling to complete baseline monitoring and 90-day compliance reports required by SMC 13.18.700 and 13.18.720 must satisfy some specific requirements. These reports require at least four grab samples for pH, cyanide, total phenols, oil and grease, sulfide, and volatile organic compounds. Nondomestic users may composite samples prior to analysis if allowed in subsection (C) of this section. Where historical sampling data exists, the director may also authorize fewer samples.

I. For periodic compliance reports (SMC 13.18.730), the director may specify the number of grab samples necessary to assess and ensure compliance with applicable pretreatment standards and requirements.

J. Samples should be taken immediately downstream from pretreatment facilities if such exist or immediately downstream from the regulated or manufacturing process if no pretreatment exists or as determined by the director and/or contained in the nondomestic user’s wastewater discharge permit. For categorical industrial users, if other wastewaters are mixed with the regulated wastewater prior to pretreatment the nondomestic user shall measure the flows and concentrations necessary to allow use of the combined waste stream formula of 40 CFR 403.6(e) in order to evaluate compliance with the applicable categorical pretreatment standards. For other SIUs, for which the director has adjusted its local limits to factor out dilution flows, the user shall measure the flows and concentrations necessary to evaluate compliance with the adjusted pretreatment standards.

K. All sample results shall indicate the time, date and place of sampling, and methods of analysis, and shall certify that such sampling and analysis is representative of normal work cycles and expected pollutant discharges from the user. If a nondomestic user sampled and analyzed more frequently than what was required in its wastewater discharge approval, using methodologies in 40 CFR Part 136, it must submit all results of sampling and analysis of the discharge as part of its self-monitoring report.

L. Where a treated regulated process waste stream is combined prior to treatment with wastewaters other than those generated by the regulated process, the industrial user may monitor either the segregated process waste stream or the combined waste stream for the purpose of determining compliance with applicable pretreatment standards. If the industrial user chooses to monitor the segregated process waste stream, it shall apply the applicable categorical pretreatment standard. If the nondomestic user chooses to monitor the combined waste stream, it shall apply an alternative discharge limit calculated using the combined waste stream formula as provided in 40 CFR 403.6(e). The industrial user may change monitoring points only after receiving approval from the director. The director shall ensure that any change in an industrial user’s monitoring point(s) will not allow the user to substitute dilution for adequate treatment to achieve compliance with applicable requirements. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.810 Date of receipt of reports.

The director will credit written reports as having been submitted on the date of the postmark when mailed via certified mail through the United States Postal Service. Reports delivered in any other manner will be credited as having been submitted on the business day received. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.820 Record keeping.

Nondomestic users subject to reporting requirements of these pretreatment regulations shall retain the records below for all monitoring required by these pretreatment regulations and for any additional monitoring which could be used to satisfy minimum monitoring requirements. Nondomestic users must make these records available for inspection and copying at the location of the discharge. Nondomestic users must similarly maintain documentation associated with any best management practices required under authority of SMC 13.18.330(I). Monitoring records shall include at least:

A. The time, date, and place of sampling;

B. The sampling and preservation methods used;

C. The individual taking the sample, and individuals with control of the sample prior to analysis;

D. The individual performing the analysis and the date the analysis was completed;

E. The analytical techniques or methods used; and

F. The results of analysis.

Nondomestic users are encouraged to retain quality control and quality assurance information provided by the laboratory and submit this information in routine reporting. This information also has value in the event that the sample data is called into question. For analytes for which the state requires use of a certified/accredited laboratory, users must maintain the scope of accreditation for laboratories performing any analyses for them.

Nondomestic users shall maintain the above records for the latest of: at least three years, until any litigation concerning the nondomestic user or the control authority is complete, or for longer periods when the nondomestic user has been specifically notified of a longer retention period by the director. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.830 Certification statements.

A. The following certification statement must be signed by an authorized representative of the nondomestic user and included when submitting any of the following:

1. A permit (re)application in accordance with SMC 13.18.550;

2. A baseline monitoring report under SMC 13.18.700;

3. A report on compliance with the categorical pretreatment standard deadlines under SMC 13.18.720; or

4. A periodic compliance report required by SMC 13.18.730(A) through (D).

I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.

B. Certification of Pollutants Not Present. Nondomestic users that have an approved monitoring waiver based on SMC 13.18.730(J) must also include the following certification statement in each report. This statement certifies that there has been no increase in the pollutant in its waste stream due to activities of the nondomestic user:

Based on my inquiry of the person or persons directly responsible for managing compliance with the Pretreatment Standard for 40 CFR _____ [specify applicable National Pretreatment Standard part(s)], I certify that, to the best of my knowledge and belief, there has been no increase in the level of _____ [list pollutant(s) in the wastewater due to the activities at the facility since filing of the last periodic report under SMC 13.18.730(A).

(Ord. 2839 § 1 (Exh. A), 2024)

Article VIII. Compliance Monitoring

13.18.840 Right of entry – Inspection and sampling.

The director shall have the right to enter the premises of any nondomestic user to determine whether the nondomestic user is complying with all requirements of these pretreatment regulations and any wastewater discharge permit or order issued hereunder. Nondomestic users shall allow the director ready access to all parts of the premises for the purposes of inspection, sampling, records examination and copying, and the performance of any additional duties.

A. Where a nondomestic user has security measures in force which require proper identification and clearance before entry into its premises, the user shall make necessary arrangements with its security guards so that, upon presentation of suitable identification, the director will be permitted to enter without delay for the purposes of performing specific responsibilities.

B. The director shall have the right to set up on the user’s property, or require installation of, such devices as are necessary to conduct sampling and/or metering of the nondomestic user’s operations.

C. Nondomestic users shall provide full access to the director to use any monitoring facilities and utilities available or required in accordance with SMC 13.18.400, 13.18.410(E) and (F) to confirm that the standards or treatment required for discharge to the POTW are being met.

D. Any temporary or permanent obstruction to safe and easy access to the facility to be inspected and/or sampled shall be promptly removed by the nondomestic user at the written or verbal request of the director and shall not be replaced. The costs of clearing such access shall be borne by the user.

E. Any unreasonable delay in allowing the director full access to the nondomestic user’s premises and wastewater operations shall be a violation of these pretreatment regulations. (Ord. 2895 § 1, 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.850 Search warrants.

The director may seek issuance of an administrative search warrant from the superior court of Pierce County. Such warrants may be secured when:

A. The director has been refused access or is unable to locate a representative who can authorize access to a building, structure, or property, or any part thereof, and has probable cause to believe that a violation of these pretreatment regulations is occurring on the premises;

B. The director has been denied access to inspect and/or sample as part of a routine inspection and sampling program of the control authority designed to verify compliance with these regulations or any permit or order issued hereunder; or

C. The director has cause to believe there is imminent endangerment of the overall public health, safety and welfare of the community by an activity on the premises. (Ord. 2839 § 1 (Exh. A), 2024)

Article IX. Confidentiality Agreement

13.18.900 Confidential information.

Except as provided below, information submitted to demonstrate compliance with pretreatment standards and requirements will be available to the public. Nondomestic users may have certain information, however, withheld as confidential if the following process is followed:

A. When a nondomestic user submits information to the director, or provides information to inspectors, users may request that specific information be maintained as confidential. Nondomestic users must promptly identify the specific information in writing, and describe why the release would divulge information, processes, or methods of production entitled to protection as trade secrets or confidential business information under applicable state or federal laws.

B. Upon receipt of such statement of confidentiality, the information shall be filed separately and marked that the information shall not be disclosed except as provided for under this section.

C. Upon receipt of a public records request for information a nondomestic user claims to be exempt from disclosure, the director shall within five business days of receipt notify the nondomestic user of the public disclosure request and inform such user in writing that the information will be disclosed unless the nondomestic user obtains a court order directing that the information not be disclosed within no less than 10 days of receipt of providing notice of the request to the nondomestic user. The director shall include a copy of the written notification to the nondomestic user in the initial response to the public records request required under state law.

D. Unless the court orders the withholding of the information claimed to be confidential or the information is otherwise determined exempt from disclosure, the director shall provide such information to the person making the public records request.

E. All other information submitted to the director and obtained from the director’s oversight shall be available to the public subject to applicable city or contributing jurisdiction public records policies.

F. Information held as confidential may not be withheld from governmental agencies for uses related to the NPDES program or pretreatment program, or in enforcement proceedings involving the person furnishing the report.

G. Federal rules prevent wastewater constituents and characteristics and other effluent data, as defined by 40 CFR 2.302, from being recognized as confidential information. (Ord. 2839 § 1 (Exh. A), 2024)

Article X. Publication of Users in Significant Noncompliance

13.18.1000 Publication of users in significant noncompliance.

A. Publishing. The director must annually publish a list of the nondomestic users which, at any time during the previous 12 months, were in significant noncompliance with applicable pretreatment standards and requirements. The list will be published in a newspaper of general circulation that provides meaningful public notice within the jurisdictions served by the POTW.

B. Definition. The term “significant noncompliance” means:

1. Any violation of a pretreatment standard or requirement including numerical limits, narrative standards, and prohibitions that the director determines has caused, alone or in combination with other discharges, interference or pass-through, including endangering the health of POTW personnel or the general public.

2. Any discharge that has caused imminent endangerment to the public or to the environment or has resulted in the director’s exercise of its emergency authority to halt or prevent such a discharge.

3. Any violation(s), including of best management practices, which the director determines will adversely affect the operation or implementation of the local pretreatment program.

4. Chronic violations of wastewater discharge limits, defined here as those in which 66 percent or more of all the measurements taken for the same pollutant parameter taken during a rolling six-month period exceed, by any magnitude, a numeric pretreatment standard or requirement, including instantaneous limits of SMC 13.18.330.

8. Failure to accurately report non-compliance.

C. Applicability. The criteria in subsections (B)(1) through (B)(3) of this section are applicable to all users, whereas the criteria in subsections (B)(4) through (B)(8) of this section are only applicable to significant industrial users and categorical industrial users. (Ord. 2839 § 1 (Exh. A), 2024)

Article XI. Administrative Enforcement Remedies

13.18.1100 Procedures.

The director shall establish enforcement procedures consistent with the provisions of these pretreatment regulations. The director shall adopt an enforcement response plan consistent with the requirements of state law. Such plan shall ensure that the application of remedies provided for in Articles IX through XI of these regulations is appropriate to the violation, and consistent with the treatment of other nondomestic users. Any person may review or obtain a copy in accordance with applicable local, state and federal public records policies of the enforcement response plan by contacting the control authority. In response to noncompliance with any requirement of these pretreatment regulations, the control authority shall apply its enforcement response plan, which shall be incorporated into the enforcement procedures. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1110 Notification of violation.

The director may serve a written notice of violation on any nondomestic user that the director finds has violated, or continues to violate, any provision of these pretreatment regulations, including terms or requirements of a permit, order, or a pretreatment standard or requirement. Nondomestic users shall, in response to a notice of violation, provide the director a written explanation of the violation, its cause, and a corrective action plan within 14 calendar days of receiving this notice. Nondomestic users submitting plans to correct noncompliance must include the specific actions they will take to correct ongoing and prevent future violations at the soonest practicable date. The director’s acceptance of a plan does not relieve a nondomestic user of liability for any violations. The director may also take any action, including emergency actions or any other enforcement action, without first issuing a notice of violation. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1120 Consent orders.

The director may enter into a consent order or other voluntary agreement to memorialize agreements with nondomestic users violating any requirement of these pretreatment regulations. Such agreements must include the specific action(s) required and date(s) they are to be completed to correct the noncompliance. Such documents must be constructed in a judicially enforceable manner and have the same force and effect as administrative orders issued pursuant to SMC 13.18.1150 and 13.18.1160. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1130 Compliance review meeting.

The director may order a nondomestic user that has violated or continues to violate any provision of these pretreatment regulations, a wastewater discharge permit, order, pretreatment standard or requirement to appear before the director and show cause why the proposed enforcement action should not be taken. Notice shall be served on the nondomestic user specifying the time and place for the meeting, the proposed enforcement action, the reasons for such action, and a request that the user show cause why the proposed enforcement action should not be taken. The notice of the meeting shall be served personally or by registered or certified mail (return receipt requested) at least five days prior to the meeting. Such notice may be served on any authorized representative of the user. A compliance review meeting shall not be a bar against, or prerequisite for, taking any other action against the nondomestic user. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1140 Compliance orders.

The director may issue a compliance order to any nondomestic user which has violated any provision of these pretreatment regulations including a requirement of a permit, order, or a pretreatment standard or requirement. The compliance order may direct that the nondomestic user come into compliance within a specified time, install and properly operate adequate treatment facilities or devices, or take such measures as the director finds are reasonably necessary. These measures may include additional self-monitoring and management practices designed to minimize the amount of pollutants discharged to the POTW. A compliance order may not extend the deadline for compliance established for a pretreatment standard or requirement, or relieve a user of liability for any violation, including a continuing violation. If the nondomestic user does not come into compliance within the time provided, sanitary sewer service may be discontinued. Issuance of a compliance order shall not be a bar against, or a prerequisite for, taking any other action against the nondomestic user. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1150 Cease and desist orders.

When the director finds that a nondomestic user has violated, or continues to violate, any provision of these pretreatment regulations, a wastewater discharge permit or order issued hereunder, or any other pretreatment standard or requirement, or that the user’s past violations are likely to recur, the director may issue an order to the user directing it to cease and desist all such violations and directing the nondomestic user to:

A. Immediately comply with all requirements; and

B. Take such appropriate remedial or preventive action as may be needed to properly address a continuing or threatened violation, including halting operations and/or terminating the discharge. Issuance of a cease and desist order shall not be a bar against, or a prerequisite for, taking any other action against the nondomestic user. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1160 Administrative fines.

A. When the director finds that a nondomestic user has violated, or continues to violate, any provision of these pretreatment regulations, a wastewater discharge permit or order issued hereunder, or any other pretreatment standard or requirement, the director may fine such nondomestic user in an amount not to exceed $5,000. Such fines shall be assessed on a per-violation, per-day basis. In the case of monthly or other long-term average discharge limits, fines may be assessed for each day during the period of violation.

B. The director may add the costs of any emergency response, additional monitoring, investigation, and administrative costs related to the noncompliance and the director’s response to the situation to the amount of the fine.

C. The director will consider the economic benefit enjoyed by a user as a result of the noncompliance in cases where there appears to have been a monetary benefit from not complying. In such cases, the director shall ensure that fines, to the maximum amounts allowable, exceed the benefit to the nondomestic user from the noncompliance.

D. Unpaid charges, fines, and penalties shall, at 30 calendar days past the due date, be assessed an additional penalty at a rate established by the control authority, and interest shall accrue thereafter at a rate established by the control authority. After 30 calendar days the control authority, on its own behalf or as an authorized agent of a contributing jurisdiction, shall be authorized to file a lien against the user’s property for unpaid charges, fines, and penalties.

E. Nondomestic users desiring to dispute such fines must file a written request for the director to reconsider the fine along with full payment of the fine amount within 15 business days of being notified of the fine. Where a request has merit, the director may convene a hearing on the matter. In the event the nondomestic user’s appeal is successful, the director shall rebate the difference between the initial and final penalty amounts to the nondomestic user.

F. Issuance of an administrative fine shall not be a bar against, or a prerequisite for, taking any other action against the nondomestic user. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1170 Emergency suspensions.

The director may immediately suspend a nondomestic user’s authorization to discharge to the POTW when the discharge reasonably appears to present a substantial danger to the health or welfare of persons. In such cases, the director will first provide informal notice to the nondomestic user. The director may also immediately suspend nondomestic user’s authorization to discharge, after notice and opportunity to respond, that threatens to interfere with the operation of the POTW, or which presents, or may present, a danger to the environment.

A. Any nondomestic user notified of a suspension of authorization to discharge to POTW shall immediately stop or eliminate the discharge. If a nondomestic user fails to immediately comply voluntarily with the suspension order, the director may take such steps as deemed necessary to protect the public and its interest in the POTW. Remedies available to the director include immediately severing the sanitary sewer connection, at the users expense, turning off pump stations downstream of the nondomestic user, and partnering with law enforcement. The director may not allow the nondomestic user to recommence its discharge until the nondomestic user has demonstrated to the satisfaction of the director that the situation warranting the suspension has been properly addressed and any proposed termination proceeding has been resolved.

B. Any nondomestic user that is responsible, in whole or in part, for any discharge presenting imminent endangerment shall submit a detailed written statement, describing the causes of the harmful contribution and the measures taken to prevent any future occurrence. Nondomestic users shall submit this report to the director prior to the date of any compliance review meeting or termination hearing under SMC 13.18.1130 and 13.18.1180, respectively. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1180 Termination of discharge.

Any nondomestic user who violates any of the following conditions is subject to having the privilege of discharging to the POTW withdrawn:

A. Discharge of nondomestic wastewater without a permit or other control document, including:

1. Where the appropriate permit or control document has not been requested;

2. Where the appropriate permit or control document has not yet been issued; or

3. Where the permit or control document has been denied or revoked based on the provisions of SMC 13.18.650 (Wastewater discharge permit revocation).

B. Violation of permit or other control document terms and conditions including:

1. Exceeding any permit or control document limit;

2. Failing to meet other pretreatment standards or requirements;

3. Violating any prohibition; or

4. Failing to properly monitor and report discharges or changed conditions.

C. Refusal of reasonable access to the nondomestic user’s premises for the purpose of inspection, monitoring, or sampling (whether subject to a permit or not).

D. Violation of the pretreatment standards and requirements in Article III of these pretreatment regulations, including failure to satisfy nondomestic user screening form requirements.

When the director determines this remedy is necessary and appropriate to fulfill the intentions of these pretreatment regulations, such user will be notified of the proposed termination of its discharge and be offered an opportunity to show cause under SMC 13.18.1130 why the proposed action should not be taken. Exercise of this option by the director shall not be a bar to, or a prerequisite for, taking any other action against the user. (Ord. 2895 § 1 (Exh. A), 2024; Ord. 2839 § 1 (Exh. A), 2024)

Article XII. Judicial Enforcement Remedies

13.18.1220 Injunctive relief.

The director may seek injunctive relief when a user has violated, or continues to violate, a provision of these pretreatment regulations, including a pretreatment standard or requirement, or a permit or order issued hereunder. In such cases, the director may petition the superior court of Pierce County for temporary or permanent injunctive relief, as appropriate, which restrains or compels the specific performance of the wastewater discharge permit, control document, order, or other requirement imposed by these pretreatment regulations on activities of the nondomestic user. The director may also seek such other action as is appropriate for legal and/or equitable relief, including a requirement for the nondomestic user to conduct environmental remediation. A petition for injunctive relief shall not be a bar against, or a prerequisite for, taking any other action against a nondomestic user. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1230 Civil penalties.

A. A nondomestic user which has violated, or continues to violate, a provision of these pretreatment regulations, including a pretreatment standard or requirement, or a permit or order issued hereunder shall be liable to the control authority for a maximum civil penalty of $5,000 per violation, per day. In the case of a monthly or other long-term average discharge limit, penalties shall accrue for each day during the period of the violation. Any such assessment, penalty, or charges shall constitute a lien against the individual user’s property.

B. The director may recover reasonable attorneys’ fees, court costs, and other expenses associated with any emergency response, enforcement activities, additional monitoring and oversight, and costs of any actual damages to the POTW.

C. Filing a suit for civil penalties shall not be a bar against, or a prerequisite for, any other action the director may take to resolve noncompliance by a nondomestic user.

D. A nondomestic user’s failure to pay such civil penalties shall constitute a violation of these pretreatment regulations and be grounds for termination of sanitary sewer utility services and revocation of the wastewater discharge permit or other control document or mechanism. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1240 Criminal prosecution.

A. A nondomestic user who willfully or negligently violates any provision of these pretreatment regulations, a wastewater discharge permit, or order issued hereunder, or any other pretreatment standard or requirement shall, upon conviction, be guilty of a misdemeanor, punished by a fine of not more than $1,000 per violation, per day, or imprisonment for not more than 90 days in jail, or both.

B. A nondomestic user who willfully or negligently introduces any substance into the POTW which causes personal injury or property damage shall, upon conviction, be guilty of a misdemeanor. This penalty shall be in addition to any other criminal charges or judicial remedies, including remedies for causing personal injury, endangerment, or destruction of public property available under state law.

C. A nondomestic user who knowingly makes any false statements, representations, or certifications in any application, record, report, plan, or other documentation filed, or required to be maintained, pursuant to these pretreatment regulations, wastewater discharge permit, or order issued hereunder, or who falsifies, tampers with, or knowingly renders inaccurate any monitoring device or method required under these pretreatment regulations shall, upon conviction, be guilty of a misdemeanor.

D. In the event of a second criminal conviction of these pretreatment regulations, a nondomestic user shall, upon conviction, be guilty of a gross misdemeanor, punished by a fine of not more than $5,000 per violation, per day, or imprisonment for not more than 364 days in jail, or both. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1250 Remedies nonexclusive.

The remedies provided for in these pretreatment regulations are not exclusive. The director may take any, all, or any combination of these actions against a noncompliant user. Enforcement of pretreatment violations will generally be in accordance with the control authority’s enforcement response plan. However, the director may take other action against any user when the circumstances warrant. Further, the director is empowered to take more than one enforcement action against any noncompliant user. (Ord. 2839 § 1 (Exh. A), 2024)

Article XIII. Supplemental Enforcement Action

13.18.1300 Supplemental penalties.

A. The director may assess a penalty of $100.00 to any nondomestic user for each day that a report required by these pretreatment regulations, a permit or order issued hereunder is late. The director’s actions to collect late reporting penalties shall not limit the director’s authority to initiate any other enforcement action. Nondomestic users desiring to dispute such fines must follow the procedures in SMC 13.18.1160.

B. The director may assess a penalty of $100.00 for each day that a nondomestic user or establishment where fats, oils and grease may be introduced into the POTW is not in compliance with the routine maintenance schedule as authorized in SMC 13.18.410(H). The director’s actions to collect penalties for noncompliance per this section shall not limit the director’s authority to initiate any other enforcement action. Nondomestic users desiring to dispute such fines must follow the procedures in SMC 13.18.1160(E). (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1310 Performance bonds.

The director may require a satisfactory bond, payable to the control authority, in a sum not to exceed a value determined by the director as necessary to ensure the nondomestic user will achieve consistent compliance with these pretreatment regulations. The director may require this bond as an enforcement response or as a prerequisite to issue or reissue a wastewater discharge permit. Any nondomestic user who has failed to comply with any provision of these pretreatment regulations, a previous permit or order issued hereunder, or any other pretreatment standard or requirement may be subject to this requirement. This bond may also be required of any category of user which has led to public burdens in the past regardless of the compliance history of the particular user. The control authority may use this bond to pay any fees, costs, or penalties assessed to the user whenever the nondomestic users account is in arrears for over 30 days. This includes the costs of cleanup of the site if the nondomestic user goes out of business, sells the business to a person that does not first assume the bond, or goes bankrupt. Nondomestic users may petition the director to convert their performance bond to a requirement to provide liability insurance, or to forego any such safeguard based on their performance. A nondomestic user may petition no more frequently than once in any 12-month period. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1320 Liability insurance.

The director may require any nondomestic user to provide insurance if they previously failed to comply with any provision of these pretreatment regulations, a previous permit, or order issued hereunder, or any other pretreatment standard or requirement. The director may also require nondomestic users in businesses which historically have left a public burden to clean up pollution to obtain this insurance, regardless of their compliance history. In such cases, nondomestic users must provide proof that the insurance is sufficient to cover any liabilities incurred under these pretreatment regulations, including the cost of damages to the POTW and the environment caused by the user. The director may require nondomestic users to provide the proof of such insurance either in response to noncompliance or prior to issuing or reissuing a wastewater discharge permit. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1330 Payment of outstanding fees and penalties.

The director may decline to issue or reissue a wastewater discharge permit to any nondomestic user who has failed to pay any outstanding fees, fines or penalties incurred as a result of any provision of these pretreatment regulations, a previous permit or order issued hereunder. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1340 Water supply severance.

The director may order water service to a nondomestic user severed whenever a nondomestic user has violated or continues to violate any provision of these pretreatment regulations, a permit, or order issued hereunder, or any other pretreatment standard or requirement. Nondomestic users wishing to restore their service must first demonstrate their ability to comply with these pretreatment regulations and pay the related costs of this action. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1350 Public nuisances.

A violation of any provision of these pretreatment regulations or a permit or order issued hereunder, or any other pretreatment standard or requirement, is hereby declared a public nuisance and shall be corrected or abated as directed by the director. Any person(s) creating a public nuisance shall be subject to the provisions of applicable law governing such nuisances, including reimbursing the control authority for any costs incurred in removing, abating, or remedying said nuisance. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1360 Contractor listing.

Nondomestic users which have not achieved compliance with applicable pretreatment standards and requirements may not be eligible to receive a contractual award for the sale of goods or services to the control authority or contributing jurisdiction. Existing contracts for the sale of goods or services to the control authority or contributing jurisdiction held by a nondomestic user found to be in significant noncompliance with pretreatment standards or requirements may be terminated at the discretion of the director. (Ord. 2839 § 1 (Exh. A), 2024)

Article XIV. Affirmative Defenses to Discharge Violations

13.18.1400 Upset.

A. For the purposes of this section, the word “upset” means an exceptional incident in which there is unintentional and temporary noncompliance with categorical pretreatment 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 pretreatment facilities, inadequate pretreatment facilities, lack of preventive maintenance, or careless or improper operation.

B. An upset shall constitute an affirmative defense to punitive actions in response to noncompliance with categorical pretreatment standards, SMC 13.18.320, but not local limits, SMC 13.18.330, when the requirements of subsection (C) of this section are met.

C. A nondomestic user who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs, or other relevant evidence that:

1. An upset occurred and the user can identify the cause(s) of the upset.

2. The facility was at the time being operated in a prudent and workmanlike manner and was in compliance with applicable operation and maintenance procedures.

3. Where the upset involved reduction, loss, or failure of its pretreatment facility (e.g., a power failure), the user controlled production of all discharges to the extent necessary to maintain compliance with categorical pretreatment standards until the facility was restored or an alternative method of treatment was provided.

4. The nondomestic user submitted the following information to the director within 24 hours of becoming aware of the upset. When initially provided orally, the nondomestic user must have provided a written report within five days that includes:

a. A description of the indirect discharge and cause of noncompliance;

b. The period of noncompliance, including exact dates and times or, if not corrected, the anticipated time the noncompliance is expected to continue; and

c. Steps being taken and/or planned to reduce, eliminate, and prevent recurrence of the noncompliance.

D. In any enforcement proceeding, the nondomestic user seeking to establish the occurrence of an upset shall have the burden of proof.

E. Users will have the opportunity for a judicial determination on any claim of upset only in an enforcement action brought for noncompliance with categorical pretreatment standards. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1410 Prohibited discharge standards.

A nondomestic user will have an affirmative defense to an enforcement action brought against it for noncompliance with the prohibitions in SMC 13.18.300(A) and (B)(3) through (B)(7) in certain cases. The nondomestic user must be able to prove that it did not know, or have reason to know, that its discharge, alone or in conjunction with discharges from other sources, would cause pass-through or interference and that either:

A. A local limit exists for each pollutant discharged and the nondomestic user was in compliance with each limit directly prior to, and during, the pass-through or interference; or

B. No local limit exists, but the discharge did not change substantially in nature or constituents from the nondomestic user’s prior discharge when the control authority was regularly in compliance with its NPDES permit, and, in the case of interference, was in compliance with applicable sludge use or disposal requirements. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1420 Bypass.

A. For the purposes of this section, “severe property damage” means substantial physical damage to property, damage to the treatment facilities which causes them to become inoperable, or substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a bypass. “Severe property damage” does not mean economic loss caused by delays in production.

B. A nondomestic user may be authorized to allow a bypass to occur if it does not cause pretreatment standards or pretreatment requirements to be violated and is for essential maintenance to ensure efficient operation.

C. Any other bypass must meet the following requirements:

1. Nondomestic users knowing in advance of the need for a bypass must submit prior notice to the director, at least 10 days before the bypass whenever possible; and

2. Nondomestic users must notify the director of any unanticipated bypass that exceeds applicable pretreatment standards within 24 hours of becoming aware of the bypass. Nondomestic users must provide a written follow-up report within five days. The director may waive the written report if the oral report was timely and complete. Unless waived, the written report must contain:

a. A description of the bypass (volume, pollutants, etc.);

b. What caused the bypass;

c. When, specifically, the bypass started and ended;

d. When the bypass is expected to stop (if ongoing); and

e. What steps the user has taken or plans to take to reduce, eliminate, and prevent the bypass from reoccurring.

D. Bypass is prohibited, and the director may take an enforcement action against a user for a bypass, unless:

1. Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage;

2. There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate backup equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass which occurred during normal periods of equipment downtime or preventive maintenance; and

3. The nondomestic user submitted notices as required under subsection (C) of this section.

E. The director may approve an anticipated bypass, after considering its adverse effects, if the director determines that it will meet the three conditions listed in subsection (D) of this section. (Ord. 2839 § 1 (Exh. A), 2024)

Article XV. Administrative Hearing

13.18.1500 Right to administrative hearing.

A. Any affected nondomestic user shall have the right to an administrative hearing to appeal the director’s determination to take any of the following actions:

1. Issue or deny a nondomestic user’s wastewater discharge permit or other control document;

2. Impose particular conditions or requirements in a nondomestic user’s wastewater discharge permit or other control document;

3. Suspend a nondomestic user’s wastewater services or wastewater discharge permit or other control document pursuant to SMC 13.18.1170;

4. Terminate the nondomestic user’s wastewater services or wastewater discharge permit or other control document pursuant to SMC 13.18.1180;

5. Modify the nondomestic user’s wastewater discharge permit or other control document pursuant to SMC 13.18.630;

6. Issue a notice of violation pursuant to SMC 13.18.1110;

7. Require annual publication pursuant to SMC 13.18.1000;

8. Issue a compliance order pursuant to SMC 13.18.1140;

9. Impose administrative penalties pursuant to SMC 13.18.1160;

10. Impose civil penalties pursuant to SMC 13.18.1230;

11. Assess damages and costs against the user pursuant to SMC 13.18.1230;

12. Impose any other discretionary action upon the user, or deny any discretionary action requested of the director by the user, if such action or omission directly affects the nondomestic user; or

13. Take any other action with respect to the user which requires the opportunity for hearing by state law or constitutional right. (Ord. 2895 § 1, 2024; Ord. 2839 § 1 (Exh. A), 2024)

13.18.1510 Request for administrative hearing.

A. A hearing pursuant to this article shall be requested by the nondomestic user, in writing to the director within 15 business days of the user’s actual notice of the director’s action or determination from which the user seeks appeal. Failure to request such hearing within this period shall constitute a waiver of the right to administrative hearing, unless the director determines that good cause exists for the delay.

B. Any request for administrative hearing shall adequately identify the affected nondomestic user, the director’s action or determination from which the user seeks appeal, and the basis or reasons for the appeal.

C. The director shall respond to all requests for administrative hearing within 15 business days of receipt of request from the user, or five business days if the user is contesting suspension of wastewater services, permit, or other control document.

D. The director may deny a request for hearing if the request is untimely, the action contested is not subject to appeal, or if the director determines in good faith that the request is incomplete or additional information is needed to identify the user, determine the particular action or decision appealed, or determine the basis or reasons for appeal. If the request is denied, the director shall state the basis for the denial in the director’s response.

E. If the request for hearing is granted, the director shall set a date for hearing no sooner than 10 days or later than 30 days from the date of the director’s response to the request. The director may extend the date for hearing upon good cause for delay and timely notice to the nondomestic user.

F. The director’s response granting an administrative hearing shall notify the nondomestic user of the following items:

1. The names and addresses of all parties to whom notice has been sent;

2. The mailing address and telephone number of the department or office designated to represent the director, typically the control authority or contributing jurisdictions’ attorney’s office;

3. The official file or reference number and name of the proceeding;

4. The name, title, mailing address, and telephone number of the appointed hearings officer, if known;

5. A brief statement of the time, location, and nature of the administrative hearing;

6. A statement that the hearing is provided pursuant to this section under the authority conferred upon the director by SMC 13.18.020;

7. A reference to the particular sections of these regulations, state law, or federal law upon which the director intends to rely;

8. A short statement of the factual or legal matters asserted by the director, if known; and

9. A statement that a party who fails to attend or participate in the scheduled hearing may be found in default. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1520 Hearings officer.

A. The hearings officer for an administrative hearing under this article shall be the director or the director’s designate.

B. A person that has served as an investigator, prosecutor, or advocate in an adjudicative proceeding, or in its pre-adjudicative stage, or one who is subject to the authority, direction, or discretion of such a person, may not serve as a hearings officer in the same proceeding. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1530 Petition for disqualification.

A. Any party to the hearing may present a written petition for disqualification of a designated hearings officer. A hearings officer shall be subject to disqualification for actual bias, prejudice, interest, or any other cause sufficient to disqualify a judge under state law. Such petition shall particularly describe the basis or reasons asserted for disqualification, and must be submitted to the designated hearings officer within 10 days of official notice of the hearings officer’s identity, or within five days of actual knowledge of the basis for disqualification, whichever is longer. Failure to timely submit a petition for disqualification shall result in a waiver of that party’s objection to the hearings officer. Petition for disqualification must be submitted at least two days prior to hearing date.

B. The hearings officer shall consider and decide such petition within 10 days and issue a written order stating facts and reasons for the determination made.

C. The time for hearing set pursuant to SMC 13.18.1510 shall be stayed pending determination of a petition for disqualification. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1540 Pleadings, briefs, motions, service.

The hearings officer shall allow all parties, at appropriate stages of the proceeding, to submit and respond to written and oral pleadings, motions, petitions and objections. A party that submits written pleadings, briefs, petitions, or other documents to the hearings officer shall deliver a copy in advance to all other parties. The hearings officer may refuse to consider written pleadings, motions, petitions, and other documents which have not been delivered to other parties. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1550 Default.

A. When a party fails to attend or participate in a hearing pursuant to this article, the hearings officer may issue an order of default disposing of the matter in favor of the opposing party.

B. Within seven days of issuance of order of default, the party against whom the order has been issued may petition the hearings officer, in writing, to repeal the order of default and set a new date for hearing. Upon good cause shown by the defaulting party, and a finding by the hearings officer, on the record, that repeal of the order of default is required in the administration of justice, such repeal of the order of default may be granted and the hearing reset. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1560 Continuance.

A. Upon the written or oral motion of any party, or on his or her own accord, the hearings officer may grant a continuance of the date set for hearing for any good cause. Upon request for continuance, the party requesting continuance shall advise all other parties of the request. The hearings officer shall afford all other parties an opportunity to address a request for continuance before granting such motion. If contested, the hearings officer shall determine in his or her discretion whether good cause has been presented, taking into due consideration the orderly and efficient administration of such hearings.

B. Upon order of continuance, the hearings officer shall determine a new date for hearing not to exceed 30 days from the date of the previously arranged hearing, and shall advise all parties of the new date and time for hearing, and new location, if applicable.

C. The time limits for hearing otherwise established by this section shall be deemed to be waived by all parties upon issuance of an order of continuance. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1570 Procedure at hearing.

A. The hearings officer shall preside over and regulate the course of proceedings at the hearing.

B. To the extent necessary to make an informed and rational decision, the hearings officer shall allow all parties the opportunity to present evidence and argument, conduct cross-examination, and submit rebuttal evidence.

C. Upon finding that the rights of the parties will not be prejudiced, the hearings officer may allow all or part of the hearing to be conducted by telephone, or other electronic means.

D. The formal rules of evidence shall not apply to the presentation of evidence at the hearing. The hearings officer shall allow evidence if, in the judgment of the hearings officer, the evidence is of the kind upon which reasonably prudent persons are accustomed to rely in the conduct of their affairs. Upon the motion of any party, or upon his or her own accord, the hearings officer may exclude the presentation of evidence that the hearings officer determines is not relevant, cumulative, prejudicial, or excludable on the basis of constitutional or state law.

E. All testimony of witnesses shall be made under oath or affirmation and the hearings officer is authorized by these regulations to administer such oath or affirmation as set forth in RCW 5.28.010 through 5.28.060.

F. The hearings officer may take administrative notice of: any fact judicially cognizable; technical or scientific facts within the director’s specialized knowledge; officially published laws and regulations of the control authority or any contributing jurisdiction, the state, the United States, or any other state; and any codes or standards that have been adopted by the control authority or any contributing jurisdiction, an agency of the United States, the state, or any other state, or by a nationally recognized organization or association.

Parties shall be notified of any such information of which the hearings officer takes administrative notice and shall have the opportunity to address and/or contest the facts or materials so noticed prior to issuance of a final order. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1580 Record of proceedings.

A. The hearings officer shall cause the hearing to be recorded in a method chosen by the director. The director shall not be required to prepare a transcript, unless required to do so by other provision of law.

B. Any party may make arrangements to record the hearing through any means of choice; provided, that the party arranges and pays for the expenses of recording; and provided further, that the chosen recording means does not cause distraction or disruption.

C. Upon issuance of a final order, the director shall maintain the record of hearing for a period of 90 days, for the purposes of judicial review. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1590 Public access.

Administrative hearings pursuant to this article shall be generally open to public observation, unless required to be private by state law or constitutional provision, or if the nondomestic user requests confidentiality and establishes that evidence to be presented at the hearing is protected from public disclosure under the standards set forth in SMC 13.18.900. The hearings officer may order the hearing to be closed upon other good cause shown by the parties, such as undue distraction or disruption. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1600 Ex parte communications.

A. Once designated, the hearings officer shall not communicate, directly or indirectly, regarding any issue in the proceeding other than communications necessary to procedural aspects of maintaining an orderly process, with any elected official, officer, employee or other representative of the control authority or any contributing jurisdiction who has specific knowledge of the matter, or with any other person who has a direct or indirect interest in the outcome of the hearing, without notice and opportunity for all parties to participate, except as otherwise provided in this section.

B. The hearings officer may receive aid and advice from the control authority or any contributing jurisdiction’s attorney’s office; provided, that the hearings officer initiates the communication, the particular employee providing advice has not and/or will not represent the director at the hearing; and provided further, that any such communications are limited to the resolution of legal issues requiring specialized knowledge or resources.

C. The hearings officer may communicate with employees or consultants of the control authority or any contributing jurisdiction who have not participated in the proceeding in any manner, and who are not engaged in any investigative or prosecutorial functions in the same or a factually related case.

D. Persons with whom the hearings officer may not communicate regarding any issue in the hearing under the provisions of subsection (A) of this section shall not initiate communication with the hearings officer, without notice and opportunity for all parties to participate, unless necessary to procedural aspects of maintaining an orderly process.

E. Nothing in this section shall prohibit the parties from communicating with the hearings officer when specifically authorized or required to do so by these regulations or state law.

F. A hearings officer who receives or initiates prohibited communications shall notify all parties and identify the party making the communication, or to whom the communication was made, and place on the record the substance of all prohibited communications. Any party may submit a written rebuttal statement to the hearings officer in response to a prohibited communication, and such statement shall be placed on the record; provided, that the rebuttal is submitted within 10 days of the party’s notice of the prohibited communication and, further, that notice of the rebuttal is provided to all other parties. Such prohibited statements and rebuttals included on the record shall not be considered evidence in the hearings officer’s determination and may form the basis for a petition for disqualification of the hearings officer. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1610 Issuance of final order.

A. The hearings officer shall issue a written final order within 15 business days of conclusion of the hearing. The hearings officer may extend the time for final order upon notice to the parties and upon good cause, including but not limited to: excessive evidence or testimony, factual or legal complexities requiring additional investigation or research, or time conflict with other prearranged matters. The hearings officer shall be reasonably diligent in issuing final orders within the timelines specified in this section.

B. The final order shall include the following elements:

1. A statement of findings and conclusions, and the reasons and basis therefor, on all material issues of fact, law, or discretion presented on the record;

2. The remedy, sanction, or other action determined to be applicable;

3. Any specific findings substantially based upon the credibility or demeanor of witnesses and the reasons therefor; and

4. A statement advising the parties of the right to seek judicial review in Pierce County superior court by filing the appropriate petition within 30 days of issuance of the final order.

C. Findings of fact shall be based exclusively upon the evidence contained in the record of the hearing and shall be based upon the kind of evidence upon which reasonably prudent persons are accustomed to rely in the conduct of their affairs.

D. The hearings officer may rely upon any specialized knowledge of the control authority or contributing jurisdictions in evaluating evidence.

E. The hearings officer may allow the parties time after conclusion of the hearing to submit memos, briefs, or proposed orders. A party submitting a memo, brief, or proposed order shall provide notice of the submittal to all other parties and comply with the provisions of SMC 13.18.1540.

F. The hearings officer may accept and issue, or incorporate into the final order, any stipulated agreement made between the parties, provided the hearings officer determines that such stipulated agreement does not offend the administration of justice.

G. Nothing in this section shall be interpreted as requiring a hearing prior to any emergency suspension under these regulations. (Ord. 2839 § 1 (Exh. A), 2024)

Article XVI. Judicial Review

13.18.1620 Final action.

A. An administrative hearing, where provided by these regulations, shall be a prerequisite to judicial review of the director’s determination, action, or omission under this section. A nondomestic user shall not be deemed to have exhausted administrative remedies unless such hearing is timely requested and conducted or denied.

B. A final order issued by a hearings officer pursuant to Article XV of these regulations, or the director’s refusal to grant a request for administrative hearing, shall constitute final agency action for purposes of administrative review.

C. Except to the extent that these regulations or another statute provides otherwise, the record resulting from any administrative hearing shall constitute the exclusive basis for agency action in judicial review of the administrative hearing.

D. Unless otherwise provided by law, petition for judicial review of final agency action shall be submitted to the superior court of Pierce County within 30 days of final agency action and properly served upon the control authority. (Ord. 2839 § 1 (Exh. A), 2024)

Article XVII. Wastewater Treatment Charges and Fees

13.18.1700 Pretreatment charges and fees.

The control authority may adopt reasonable fees for reimbursement of costs of setting up and operating the control authority’s pretreatment program which may include:

A. Fees for wastewater discharge permit applications including the cost of processing such applications;

B. Fees for monitoring, inspection, and surveillance procedures including the cost of collection and analyzing a user’s discharge, and reviewing monitoring reports submitted by users;

C. Fees for reviewing and responding to accidental discharge procedures and construction;

D. Fees for filing appeals;

E. Fees to recover administrative and legal costs (not included in subsection (B) of this section) associated with the enforcement activity taken by the director to address nondomestic user noncompliance; and

F. Other fees as the control authority may deem necessary to carry out the requirements contained herein. These fees relate solely to the matters covered by these regulations and are separate from all other fees, fines, and penalties chargeable by the control authority. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1710 High-strength user charges and fees.

Nondomestic users meeting the definition of a high-strength user as defined in SMC 13.18.330(G) shall be subject to appropriate charges and fees as determined by the director.

A. A monthly sanitary sewer charge for flow is levied on each high-strength user discharging directly to the POTW. This charge is at a rate as determined by the director and is based upon the measured volume of total wastewater discharged to the POTW or metered water consumption.

B. Rates for strength of industrial wastewater from high-strength users are established for each pound of BOD and each pound of suspended solids as determined by the director.

C. Industrial wastewater samples taken for the purpose of determining charges are to be taken by the control authority or as otherwise determined by the control authority. The samples taken shall be composite samples. Charges shall apply as specified in subsection (B) of this section, as determined on the basis of at least one 24-hour flow proportioned or timed sample analysis to be obtained twice per month and such analyses averaged for each month; provided, a new average for strength of industrial wastewater may be computed, regardless of previous averages, when changes in preliminary treatment or industrial process changes have been made which are expected to significantly change the average strength of the wastewater.

D. Sampling procedures and methods to determine the mean wastewater strength for the purpose of determining charges shall be conducted by or under the direction of the director. Samples shall involve a 24-hour flow-proportioning or timed sampling device, where feasible, and be in accordance with methods as prescribed in SMC 13.18.780 and 13.18.790. Sampling shall be conducted at sampling manholes or other locations adjudged by the director to be suitable points from which samples would be representative, either singly or with other samples, of the industrial wastewater to be sampled. Samples shall be analyzed by an accredited laboratory as required by chapter 173-50 WAC. (Ord. 2839 § 1 (Exh. A), 2024)

Article XVIII. Miscellaneous Provisions

13.18.1800 Severability.

If any provision, paragraph, word, or section of these regulations is invalidated by any court of competent jurisdiction, the remaining provisions shall not be affected and shall continue in full force and effect. (Ord. 2839 § 1 (Exh. A), 2024)

13.18.1810 Conflict.

All other resolutions or regulations, or parts thereof, inconsistent, or conflicting with any part of these regulations are hereby repealed to the extent of such inconsistency or conflict. (Ord. 2839 § 1 (Exh. A), 2024)