Stormwater and all other surface and groundwater drainage shall be discharged to such sewers specifically designated as storm sewers, or to a natural outlet approved by the public works director. Industrial cooling water or unpolluted process waters may be discharged on approval of the director of public works and the State of Washington Department of Ecology to a storm sewer or a natural outlet.
(Ord. 561, 1985)
No person shall discharge or cause to be discharged any of the following described waters or wastes to any public sewers:
A. 
Any gasoline, benzene, naphtha, fuel oil or other flammable or explosive liquid, solid, gas or petroleum products;
B. 
Any waters or wastes containing toxic or poisonous solids, liquids or gases in sufficient quantity, either singly or by interaction with other wastes to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, create a public nuisance, or create any hazard in receiving waters of the sewage treatment plant, including but not limited to cyanides in excess of two mg/l as CN in the wastes as discharged to the public sewer;
C. 
Any waters or wastes having a pH lower than 6.0, or having any other corrosive property capable of causing damage or hazard to pipe, structures, equipment and personnel of the sewage works;
D. 
Solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works, such as, but not limited to ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails and paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders;
E. 
Any liquid or vapor having a temperature higher than 150 degrees Fahrenheit (65 degrees Celsius);
F. 
Any water or waste containing fats, wax, grease or oils, whether emulsified or not, in excess of 100 mg/l, or containing substances which may solidify or become viscous at temperatures between 32 and 150 degrees Fahrenheit (zero degrees and 65 degrees Celsius);
G. 
Any garbage that has not been properly shredded. The installation and operation of any garbage grinder equipped with a motor of three-fourths horsepower (9.76 hp metric) or greater shall be subject to the review and approval of the public works department;
H. 
Any waters or wastes containing strong acid iron pickling wastes, or concentrated plating solutions, whether neutralized or not;
I. 
Any waters or wastes containing iron, chromium, copper, zinc and similar objectionable or toxic substances, or wastes exerting an excessive chlorine requirement to such degree that any such material received in the composite sewage at the sewage treatment works, exceed the limits established by the director of public works or Department of Ecology, for such materials;
J. 
Any waters or wastes containing phenols or other taste or odor-producing substances, in such concentrations exceeding limits which may be established by the engineer, as necessary, after treatment of the composite sewage, to meet the requirements of the state, federal or other public agencies of jurisdiction for such discharge to the receiving waters;
K. 
Any radioactive wastes or isotopes of such half-life or concentration as may exceed limits established by the engineer, in compliance with applicable state or federal regulations;
L. 
Any waters or wastes having a pH in excess of 9.0;
M. 
Materials which exert or cause:
1. 
Unusual concentrations of inert suspended solids, such as, but not limited to Fullers earth, lime slurries and lime residues, or of dissolved solids, such as, but not limited to sodium chloride and sodium sulfate,
2. 
Excessive discoloration, such as, but not limited to dye wastes and vegetable tanning solutions,
3. 
Unusual BOD, chemical oxygen demand, in excess of 250 mg/l, or chlorine requirements in such quantities as to constitute a significant load on the sewage treatment works,
4. 
Unusual suspended solids in excess of 250 mg/l,
5. 
Unusual volume of flow or concentration of wastes constituting "slugs," as defined in this chapter;
N. 
Waters or wastes containing substances which are not amenable to treatment or reduction by the sewage treatment processes employed, or are amenable to treatment only to such degree that the sewage treatment plant effluent cannot meet the requirements of other agencies having jurisdiction over discharge to the receiving waters.
(Ord. 561, 1985)
No person shall discharge or cause to be discharged the substances, materials, waters, or wastes set out in BLMC § 13.12.300 if it appears likely, in the opinion of the director of public works, that such wastes can harm either the sewers, sewage lift stations, sewage treatment process or equipment, have an adverse effect on the receiving stream, or can otherwise endanger life, limb, public property or constitute a nuisance. In forming his opinion as the acceptability of these wastes, the director of public works will give consideration to such factors as to the quantities of subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, solid sizes and flow as it affects lift stations, nature of the sewage treatment process, capacity of the sewage treatment plant, degree of treatability of wastes in the sewage treatment plant, and other pertinent factors.
(Ord. 561, 1985)
A. 
If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in BLMC § 13.12.290, and which, in the judgment of the director of public works, may have a deleterious effect upon the sewage works, processes, equipment or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the director may:
1. 
Reject the wastes;
2. 
Require pretreatment to an acceptable condition for discharge to the public sewers;
3. 
Require control over the quantities and rates of discharge; and/or
4. 
Require payment to cover the added cost of handling and treating the wastes not covered by the existing taxes or sewer charges under the provisions of BLMC § 13.12.350.
B. 
If the director of public works permits the pretreatment or equalization of waste flows, the design and installation of the plants and equipment shall be subject to the review and approval of the director of public works and the State of Washington Department of Ecology, and subject to the requirements of applicable codes, ordinances and laws.
(Ord. 561, 1985)
A. 
Grease Interceptors Required. All commercial establishments discharging liquid waste containing grease in excessive amounts, or any flammable wastes, sand, or other ingredients that, in the opinion of the mayor or mayor's designee as set forth in BLMC § 13.12.290 and § 13.12.300, are harmful, shall be required to install, operate and maintain an approved type and adequately sized grease interceptor necessary to maintain compliance with the requirements of this section. The mayor or mayor's designee, in coordination with the public works and community development departments, shall set the parameters to determine the type of grease interceptor required for each commercial establishment. Such parameters shall be designed to ensure that commercial establishments use grease interceptors that meet the city's grease control requirements as described in BLMC § 13.12.290 and § 13.12.300. The parameters shall also ensure the minimization of polar and non-polar fats, oils and greases in amounts that cause a visible sheen on the discharge or in the public sewer system; the build-up of grease in any public sewer facility; accumulations either alone or in combination with other discharges that cause obstruction of the public sewer system; and any water or waste which contains more than 100 parts per million by weight of fats, oils and grease as measured using analytical procedures established in 40 CFR Part 136.
B. 
Best Management Practices Required. All commercial establishments discharging FOG are required to implement best management practices (BMPs) to reduce the quantity of fats, oil and grease discharged to the sanitary sewer collection system. The mayor or mayor's designee shall develop guidelines on best management practices, and shall make said guidelines available to regulated establishments.
C. 
FOG Control Program. All commercial establishments discharging FOG are required to submit and adhere to a FOG control program as part of the business license application process. The goal of the program is to implement reasonable and technically feasible controls of free-floating FOG. The basic components of the program shall include:
1. 
A written program articulating management and corporate support for the plan and a commitment to implement planned activities and achieve established goals through the implementation and enforcement of best management practices;
2. 
A description of the facility type and a summary of the products made and/or service provided;
3. 
Quantities of fats, oils and grease brought into the facility, amounts contained in the product, and quantities discharged to the sanitary sewer;
4. 
A description of current reduction, recycling, and treatment activities. This includes a description of the type and capacity of pretreatment equipment used to collect FOG prior to discharge into the city sewer system;
5. 
Schematics of the process areas illustrating drains, interceptors, and discharge points connected to the sanitary sewer;
6. 
Specific performance goals and implementation schedule; and
7. 
Initial training for new employees and refresher training every six months.
D. 
Enzymes, Bacteria and Other Agents. The direct addition into the building plumbing, grease trap or interceptor of enzymes, chemicals or other agents designed to emulsify the grease compounds is prohibited. Any attempt to modify the trap into a biological reactor by adding bacterial or microbial agents is also prohibited.
E. 
Grease Interceptor Standards.
1. 
Grease interceptors are limited to one of two types:
a. 
Hydromechanical grease interceptors (HGI); or
b. 
Gravity grease interceptors (GGI);
2. 
Each facility is solely responsible for the cost, installation, cleaning and maintenance of the grease interceptor;
3. 
Grease interceptor sizing and installation shall conform to the requirements contained in the current edition of the Uniform Plumbing Code (UPC) or other criteria as determined by the mayor or mayor's designee on a case by case basis based on review of relevant information, including but not limited to grease interceptor performance, wastestream characteristics, facility location, maintenance needs, and/or inspection needs;
4. 
The minimum storage capacity of any gravity grease interceptor is 500 gallons. Supporting sizing calculations shall be submitted to the city for approval;
5. 
Grease interceptors shall be installed in accordance with city standard details;
6. 
Grease interceptors shall be installed at a location where they are easily accessible for sample collection, inspection, and cleaning and removal of retained grease;
7. 
Grease interceptors shall be located in the lateral line between all fixtures which may introduce grease into the sanitary sewer and the connection to the sanitary sewer collection system. Such fixtures shall include but are not limited to sinks, dishwashers, floor drains for food preparation and storage areas, mop sinks, and any other fixture which is determined to be a potential source of grease;
8. 
Under no condition is any commercial or noncommercial establishment or residential property allowed to discharge liquid waste containing grease, or any flammable wastes, or other harmful ingredients, in the opinion of the public works director as set forth in BLMC § 13.12.290 and § 13.12.300, into a stormwater system;
9. 
Grease interceptors shall be equipped with a sampling port at the outlet of the interceptor. Inspection tees and manholes must enable the city to monitor and test the discharge for compliance with the city's codes and regulations;
10. 
Grease trap or interceptor design and sizing criteria are based on gravimetric separation for grease and solids removal.
F. 
Inspection. The city of Bonney Lake shall inspect grease interceptors and grease traps on both a scheduled basis and unscheduled, unannounced basis to determine whether the requirements set forth in this section are being met. Each establishment using a grease interceptor or grease trap shall allow city of Bonney Lake officials bearing proper credentials and identifications access at all reasonable times or during normal hours of operation for the purpose of inspection, observation, records examination, measurement, sampling and testing in accordance with the provisions of this section. Refusal to allow entry on site, threatening behavior, and/or refusal to schedule an appointment for entry shall constitute a violation of this section. The city shall have the right to set up on any user's property devices necessary for conducting wastewater sampling inspection, compliance monitoring and/or metering operations. All costs for laboratory collection and analysis shall be the responsibility of the establishment. During inspection, at a minimum city officials shall consider the following:
1. 
Grease interceptors shall be considered out of compliance if the total volume of grease and solids displaces more than 10 percent of the effective volume of the final chamber of the interceptor. Grease interceptors must be serviced and emptied of accumulated waste content as needed in order to maintain a minimum design capability or effective volume, but not less than once every 90 calendar days;
2. 
Sanitary wastes shall not be introduced into the grease interceptor;
3. 
Any facility that has a grease interceptor shall utilize a licensed rendering/disposal company to clean the interceptor and dispose of the waste;
4. 
Wastes removed from a grease interceptor shall be disposed of at a facility permitted to receive such waste. Neither grease, solids nor liquids removed from grease interceptors shall be returned to any grease interceptor, private sanitary sewer line, any portion of the sanitary sewer collection system or any portion of the stormwater system;
5. 
All facilities shall maintain a written record of inspection and maintenance activities and the rendering/disposal company manifest for a minimum of three years. All such records shall be submitted to the city and made available for on-site inspection during all operating hours;
6. 
Flushing the grease interceptor with large quantities of water in an effort to cause accumulated grease to pass through is prohibited; and
7. 
No debris or storage units shall be stacked or placed within a three-foot radius of the grease interceptor's access lids or sampling ports.
G. 
Monitoring and Reporting. Each establishment with a grease interceptor or grease trap shall retain maintenance records showing at a minimum the date of service, volume pumped, name of waste hauler, and waste disposal location for each grease removal device located on the premises. The records shall be kept a minimum of three years and provided to the city upon request.
H. 
Notice of Noncompliance, Compliance, and Violation. In the event that a grease interceptor or other grease removal device fails a visual or effluent sample analysis inspection, or any other condition exists that does not comply with this chapter, the user shall be given a written notice of noncompliance (NONC) and must take immediate steps to bring the grease interceptor or other grease removal device into compliance. The city-issued NONC shall set a time limit for compliance of 21 calendar days after the NONC is issued; however, the NONC time limit may be adjusted in a way that is appropriate to the nature and degree of noncompliance, the nature of the needed repairs, and whether the noncompliance creates the need for emergency repairs. The user is responsible for all associated costs to bring their grease interceptor into compliance. The city will re-inspect the grease interceptor at the conclusion of the time limit for compliance. Should the user rectify the noncompliant condition and pass their re-inspection, the user shall be issued a notice of compliance (NOC) and no further action will be necessary.
Should the user not rectify the noncompliant condition, the user shall receive a notice of violation (NOV) and fines will be assessed in the following manner:
1. 
First violation: $500.00 fine.
2. 
Second violation within 12 months of receiving the first NONC: $1,000 fine.
3. 
Third violation within 12 months of receiving the first NONC: $2,000 fine.
4. 
To encourage regular maintenance and discourage repeat violations, the third issuance of a NONC for the same or similar noncompliant condition within 12 months of receiving the first NONC shall result in a fine of $1,500, even if the violations have been corrected.
5. 
Fourth and subsequent violations within 12 months of receiving the first NONC: an additional fine of $4,000.
6. 
Termination of Service. In addition to the foregoing penalties and not in any way a limitation thereof, chronic violators may be subject to termination of water service by the city if they incur six or more NOVs in a 12-month period.
7. 
If an obstruction of the sanitary sewer collection system occurs that causes a sanitary sewer backup and/or overflow and such overflow is attributed in part or in whole to an accumulation of grease in the sanitary sewer main line, the city of Bonney Lake will take appropriate enforcement actions against the generator or contributor of such grease. These actions may include a civil action for recovery of all costs associated with clean-up activities and repair of any damaged facilities.
8. 
Any person who knowingly makes any false statements, representation, record, report, or other document filed with the city or who falsifies, tampers with or knowingly renders inaccurate any monitoring device or method required under this document is subject to administrative fines or facility closure as outlined in BLMC § 1.16.010 and § 1.16.020.
9. 
Appeals. Issuance of an NOV and penalties shall be subject to appeal. An appeal may not be filed simply because the violator does not want to pay a penalty. In order for an appeal to be filed and considered, the appellant must have a basis for appeal and be able to document that city inspectors erred in finding the establishment to be out of compliance with the standards and practices outlined in this chapter. Requests for appeal shall be in writing, addressed to the mayor or designee, submitted within 15 calendar days of the NOV or penalty, and accompanied by an appeal fee of $50.00. The request for appeal shall set forth the basis of the dispute and the facts supporting the appeal. The appeal shall be heard by the mayor or designee within 60 calendar days. After the hearing, the mayor or designee shall uphold, modify, or reverse the decision. The written decision shall be sent by certified mail to the appellant. The decision on appeal shall be final.
I. 
Exemptions. The mayor or mayor's designee may approve exemptions to the procedures set forth in this section upon request by a business and upon confirmation by the director, in his sole discretion, that such exemption is warranted. Criteria for approval of such an exemption may include businesses that do not cook food on site and as a result do not generate more grease than a single-family residence does. The mayor or mayor's designee may condition approval of an exemption upon terms that he deems appropriate under the circumstances. Any business seeking such an exemption shall submit a written request and justification to the mayor or mayor's designee.
(Ord. 561, 1985; Ord. 1266 § 2, 2007; Ord. 1510 § 2, 2015; Ord. 1579 § 1, 2017)
Where preliminary treatment or flow equalizing facilities are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner, at his expense. The owners of pretreatment facilities will be required to obtain a discharge permit from the State of Washington Department of Ecology for discharge to the city's sanitary sewer system.
(Ord. 561, 1985)
When required by the director of public works, the owner of any property serviced by a building sewer shall install a suitable control manhole, together with such necessary meters and other appurtenances in the building sewer to facilitate observation, sampling and measurement of the flow rates and waste concentration. Such manhole, when required, shall be accessibly and safely located, and shall be constructed in accordance with plans approved by the director of public works. The manhole shall be installed by the owner, at his expense, and shall be maintained by him, so as to be safe and accessible at all times.
(Ord. 561, 1985)
A. 
All measurements, tests and analyses of the characteristics of waters and wastes to which reference is made in this chapter shall be determined in accordance with the latest edition of Standard Methods for the Examination of Water and Wastewater, published by the American Public Health Association, and shall be determined at the control manhole provided, or upon suitable samples taken at the control manhole. In the event that no special manhole has been required, the control manhole shall be considered to be in the nearest downstream manhole in the public sewer to the point at which the building sewer is connected. Sampling shall be carried out by customarily accepted methods to reflect the effect of constituents upon the sewage works and to determine the existence of hazards to life, limb and property.
B. 
The particular analyses involved will determine whether a 24-hour composite of all outfalls of a premises is appropriate or whether a grab sample or samples should be taken. Normally, but not always, BOD5 and suspended solids analyses are obtained from 24-hour composites of all outfalls, whereas pH is determined from periodic grab samples. The individual dischargers shall be responsible for the cost of testing, either periodically and/or as requested by the city.
(Ord. 561, 1985)
No statement contained in this article shall be construed as preventing any special agreement or arrangement between the city and any industrial concern, whereby an industrial waste of unusual strength or character may be accepted by the city for treatment, subject to payment therefor, by the industrial concern.
(Ord. 561, 1985)