A. 
General Prohibitions. No 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 users of the POTW whether or not they are subject to categorical pretreatment standards or any other national, state, or local pretreatment standards or requirements (40 CFR 403.5(a) and WAC 173-216-060(2)(b)(i)).
B. 
Specific Prohibitions. No user shall introduce or cause to be introduced into the POTW the following pollutants in any form (solid, liquid, or gaseous):
1. 
Any pollutant which either alone or by interaction may create a fire or explosive hazard in the POTW, including, but not limited to, waste streams with a closed-cup flashpoint of less than 140 degrees Fahrenheit (60 degrees Celsius) using the test methods specified in 40 CFR 261.21 (40 CFR 403.5(b)(1)), or are capable of creating a public nuisance (WAC 173-216-060(2)(b)(ii)). This includes waste streams sufficient to create a public nuisance or a hazard to life, or to prevent entry into the sewers for maintenance or repair. At no time shall a waste stream cause two successive readings on an explosion meter to be more than five percent nor any single reading over 10 percent of the lower explosive limit (LEL) of the meter at any point in the collection system or treatment works;
2. 
Any pollutant which will cause corrosive structural damage to the POTW, but in no case discharges with a pH less than 5.0 or more than 11.0, or having any other corrosive property capable of causing damage or hazard to structures, equipment, or personnel of the POTW, unless the system is specifically designed to accommodate such discharge and the discharge is authorized by an applicable wastewater discharge permit (40 CFR 403.5(b)(2) and WAC 173-216-060(2)(b)(iv));
3. 
Any solid or viscous substances including fats, oils, and greases in amounts which may cause obstruction to the flow in a POTW or other interference with the operation of the POTW (40 CFR 403.5(b)(3) and WAC 173-216-060(2)(b)(iii));
4. 
Any discharge of pollutants, including oxygen-demanding pollutants (BOD, etc.), released at a flow rate and/or pollutant concentration which, either singly or by interaction with other pollutants, is sufficient to cause interference with the POTW (40 CFR 403.5(b)(4) and WAC 173-216-060(2)(b)(vi));
5. 
Any waste stream having a temperature which will inhibit biological activity in the treatment plant resulting in interference, or cause worker health or safety problems in the collection system. In no case shall wastewater be discharged at a temperature which causes the temperature of the influent to the treatment plant to exceed 104 degrees Fahrenheit (40 degrees Celsius) unless the system is specifically designed to accommodate such a discharge, and the discharge is authorized by an applicable wastewater discharge permit (40 CFR 403.5(b)(5) and WAC 173-216-060(2)(b)(v));
6. 
Any petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin, in amounts that will cause interference or pass through (40 CFR 403.5(b)(6) and WAC 173-216-060(2)(b)(i));
7. 
Any pollutants which result in the presence of toxic gases, vapors, or fumes within any portion of the POTW in a quantity that may cause acute worker health and safety problems (40 CFR 403.5(b)(7) and WAC 173-216-060(b)(ii));
8. 
Any trucked or hauled wastes, except at discharge points designated by the city of Colville and in compliance with all applicable city of Colville requirements and during specified hours (40 CFR 403.5(b)(8));
9. 
Any 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 sewers for maintenance or repair (WAC 173-216-060(2)(b)(ii));
10. 
Any of the following discharges unless approved by the Department under extraordinary circumstances such as the lack of direct discharge alternatives due to combined sewer service or need to augment sewage flows due to septic conditions (WAC 173-216-060(2)(b)(vii)):
a. 
Noncontact cooling water in significant volumes;
b. 
Stormwater, and other direct inflow sources; or
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;
11. 
Any dangerous or hazardous wastes as defined in Chapter 173-303 WAC, as amended, except as allowed in compliance with that regulation (WAC 173-216-060(1) and 40 CFR Part 261);
12. 
Any substance which will cause the POTW to violate its NPDES, state waste discharge or other disposal system permits or causing, alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test;
13. 
Any substance which may cause the POTW's effluent or treatment residues, sludge, or scum to be unsuitable for reclamation and reuse or would interfere with the reclamation process or cause the POTW to be in noncompliance with sludge use or disposal criteria, guidelines or regulations developed pursuant to the federal, state, or local statutes or regulations applicable to the sludge management method being used;
14. 
Any discharge which imparts color which cannot be removed by the POTW's treatment process such as dye wastes and vegetable tanning solutions, which consequently impart color to the treatment plant's effluent, thereby violating the city of Colville's NPDES permit. Color (in combination with turbidity) shall not cause the treatment plant effluent to reduce the depth of the compensation point for photosynthetic activity in the receiving waters by more than 10 percent from the seasonably established norm for aquatic life;
15. 
Any discharge containing radioactive wastes or isotopes except as specifically approved by the water/sewer superintendent in compliance with applicable state or federal regulations including WAC 246-221-190, "Disposal by Release into Sanitary Sewerage Systems"; and meeting the concentration limits of WAC 246-221-290, Appendix A, Table I, Column 2; and WAC 246-221-300, Appendix B;
16. 
Any sludge, screenings, or other residues from the pretreatment of industrial wastes or from industrial processes;
17. 
Any medical wastes, except as specifically authorized by the water/sewer superintendent;
18. 
Any detergents, surface-active agents, or other substances in amounts which may cause excessive foaming in the POTW;
19. 
Any incompatible substance such as: grease, animal guts or tissues, paunch manure, bones, hair, hides or fleshing, 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, or any other organic or inorganic matter greater than one-half inch in any dimension;
20. 
Persistent pesticides and/or pesticides regulated by the Federal Insecticide Fungicide Rodenticide Act (FIFRA);
21. 
Any wastewater which, in the opinion of the water/sewer superintendent, can cause harm either to the sewers, 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, unless allowed under a legal and binding agreement prepared by the water/sewer superintendent and city of Colville attorney (except that no waiver may be given to any categorical pretreatment standard).
C. 
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. 1404 NS § 2.1, 2008)
National categorical pretreatment standards as adopted and hereafter amended by the EPA pursuant to the Act shall be met by all users in the regulated industrial categories. These standards, found in 40 CFR Chapter I, Subchapter N, Parts 405 through 471, are hereby incorporated by reference.
(Ord. 1404 NS § 2.2, 2008)
A. 
State requirements and limitations on discharges to the POTW, as incorporated into Washington State law by Chapter 90.48 RCW and implemented in Chapter 173-201A WAC, Chapter 173-216 WAC, and Chapter 173-240 WAC, shall be met by all users which are subject to such standards in any instance in which they are more stringent than federal requirements and limitations, or those in this chapter or other applicable ordinances. This includes the requirement to meet AKART as defined herein whenever applicable and more stringent than the limits of CMC § 13.48.080, and to comply with the requirements of CMC § 13.48.180.
B. 
Any user determined by the city of Colville to qualify as a significant industrial user shall file an application for a state waste discharge permit with the Department in accordance with the requirements of WAC 173-216-070. Proof of acceptance of the application and payment of permit fees shall be kept at the user's facilities, and produced upon request by the city of Colville. Failure to submit the application or rejection of the application by the Department may be considered sufficient grounds to terminate or refuse to provide sewer service.
(Ord. 1404 NS § 2.3, 2008)
A. 
The following pollutant limits are established to protect against pass through and interference. No person shall discharge wastewater containing in excess of the following daily maximum allowable discharge limits:
These limits may be determined on a case-by-case basis after analysis by the city and the Department of Ecology.
1. 
___ mg/l arsenic.
2. 
___ mg/l cadmium.
3. 
___ mg/l chromium.
4. 
___ mg/l copper.
5. 
___ mg/l cyanide.
6. 
___ mg/l lead.
7. 
___ mg/l mercury.
8. 
___ mg/l molybdenum.
9. 
___ mg/l nickel.
10. 
___ mg/l selenium.
11. 
___ mg/l silver.
12. 
___ mg/l zinc.
13. 
100 mg/l oil and grease (petroleum or mineral oil products).
14. 
100 mg/l oil and grease (animal and vegetable based).
15. 
100 mg/l oil and grease (total of petroleum and vegetable based).
B. 
The above limits apply to the end of any process or combination of processes identified to have a potential discharge of this pollutant. All concentrations for metallic substances are for "total" metal unless indicated otherwise. The Department may impose mass limitations in addition to or in place of the concentration-based limitations above. Where a user is subject to a categorical pretreatment standard and a local limit for a given pollutant, the more stringent limit or applicable pretreatment standard shall apply.
(Ord. 1404 NS § 2.4, 2008)
A. 
The city of Colville may enter into agreements with users to accept pollutants compatible with the treatment system at concentrations greater than those typical of domestic wastewater. Users with BOD or TSS levels higher than 300 mg/l must have such an agreement before commencing discharge. Within such agreements, the city of Colville may establish terms of the user's discharge to the POTW including maximum flow rates, and concentrations. The city of Colville may also establish fees to recover costs associated with treating such wastes and monitoring schedules in such agreements. In no case will a special agreement waive compliance with a state or federal pretreatment standard or requirement including categorical standards.
B. 
Users discharging or intending to discharge pollutants other than BOD and TSS, and claiming compatibility, must prove to the satisfaction of the water/sewer superintendent that such pollutants are compatible with the POTW. The water/sewer superintendent may require any claim of compatibility to be endorsed by the Department.
(Ord. 1404 NS § 2.6, 2008)
No user shall ever increase the use of water, nor combine separate waste streams, or in any way attempt to dilute a discharge, as a partial or complete substitute for adequate treatment to achieve compliance with an applicable pretreatment standard or requirement unless expressly authorized by an applicable pretreatment standard or requirement. The water/sewer superintendent may request the Department impose mass limitations on users, which he/she believes may be using dilution to meet applicable pretreatment standards or requirements, or in other cases when the imposition of mass limitations is appropriate.
(Ord. 1404 NS § 2.7, 2008)
A. 
Users shall procure and properly install, operate, and maintain the wastewater facilities, which, combined with appropriate practices, are necessary to achieve AKART as defined herein. Such pretreatment facilities shall be designed to achieve compliance with all applicable pretreatment standards and requirements within the time limitations specified by the EPA or the state, whichever is more stringent. Detailed plans showing the pretreatment facilities and operating procedures shall be submitted to the Department for review and approval in accordance with the procedures of Chapter 173-240 WAC, and shall be disclosed to the city of Colville before construction of the facility. The review of such plans and operating procedures will in no way relieve the user from the responsibility of modifying its facility as necessary to produce a discharge acceptable to the city of Colville and/or the Department and meet discharge limitations under the provisions of this chapter. Such facilities shall be provided, operated, and maintained at the user's expense.
B. 
Users shall comply with approved engineering reports, plans and specifications, and operations and maintenance manuals, and shall modify such documents to reflect any proposed modifications of industrial wastewater (pretreatment) facilities. Users shall submit proposals to modify pretreatment facilities to the Department before implementation in accordance with Chapter 173-240 WAC. Users shall submit a copy of such revised plans and the Department's acceptance to the water/sewer superintendent before implementing changes to approved pretreatment facilities. The water/sewer superintendent may audit the compliance of any user, and require changes in operating procedures deemed necessary by the water/sewer superintendent, to ensure continued compliance with applicable pretreatment standards and requirements.
(Ord. 1404 NS § 2.8, 2008)
A. 
Existing sources (as defined herein) to which one or more categorical pretreatment standard is applicable shall comply with all applicable standards within three years of the date the standard is effective unless the pretreatment standard includes a more stringent compliance schedule. The Department shall establish a final compliance deadline date for any existing user (as defined herein) or any categorical user when the local limits for said user are more restrictive than EPA's categorical pretreatment standards.
B. 
New sources and new users as defined herein shall comply with applicable pretreatment standards within the shortest feasible time. In no case shall such time exceed 90 days from beginning a discharge. Prior to commencing discharge, such users shall have all pollution control equipment required to meet applicable pretreatment standards installed and in proper operation.
(Ord. 1404 NS § 2.9, 2008)
A. 
Whenever deemed necessary, the water/sewer superintendent may require users to comply with such conditions as may be necessary to protect the POTW and determine the user's compliance with the requirements of this chapter. Such measures may include: restricting a discharge during peak flow periods; designating that certain wastewater be discharged only into specific sewers; requiring relocation and/or consolidation of discharge points; and/or separating sewage waste streams from industrial waste streams.
B. 
Grease, oil, and sand interceptors shall be provided when, in the opinion of the water/sewer superintendent, they are necessary for the proper handling of wastewater containing grease and oil in excess of the limits in CMC § 13.48.080, or excessive amounts of sand or other settleable solids. Such interceptors shall not be required for domestic users. All interceptors shall be of type and capacity approved by the water/sewer superintendent and shall be located to be easily accessible for cleaning and inspection. Each user shall maintain, inspect, and clean required interceptors on a schedule that ensures they capture the intended pollutants, and prevent their reintroduction into the storm or sanitary sewer systems. Users shall bear all expenses related to installation, maintenance, and repair of interceptors, and the proper disposal of removed materials.
C. 
Users with the potential to discharge flammable substances may be required to install and maintain an approved combustible gas detection meter.
D. 
The water/sewer superintendent may require a user discharging more than 10,000 gallons per day or 10 percent of the average daily flow in the POTW, whichever is less, to install and maintain, on its property and at its expense, a suitable storage and flow-control facility to ensure equalization of flow over a 24-hour period. The facility shall have a capacity for at least 50 percent of the daily wastewater discharge volume and shall be equipped with alarms and a rate of discharge controller. The water/sewer superintendent shall direct the control of discharges. The city of Colville may require the user to obtain a wastewater discharge permit solely for flow equalization, or to develop a slug discharge control plan (CMC § 13.48.150).
(Ord. 1404 NS § 2.10, 2008)
A. 
The water/sewer superintendent may require any user to install, properly operate, and maintain, at its own expense, facilities to prevent sludge loads or accidental discharges of pollutants to the POTW. The water/sewer superintendent may require users to produce and/or implement spill plans developed in compliance with applicable OSHA, health, fire, and Department regulations applicable to discharges to POTWs. When such plans are required by the water/sewer superintendent they shall contain at least the following elements:
1. 
A description of all wastewater discharge practices, including nonroutine batch discharges;
2. 
A description of any and all stored chemicals;
3. 
Procedures for immediately notifying the water/sewer superintendent of any accidental or sludge load discharges, with procedures for follow-up written notification within five days; and
4. 
Procedures to prevent adverse impact from any accidental or sludge load discharge, including, but not limited to, the following: inspection and maintenance of chemical storage areas; handling and transfer of materials; loading and unloading operations; control of run-off; worker training; construction of containment structures or equipment; and measures for emergency response.
B. 
Users shall verbally notify the water/sewer superintendent or the wastewater treatment plant supervisor immediately upon the occurrence of a sludge load or accidental discharge of substances regulated by this chapter and take immediate actions to correct the situation. Such notification shall include the following information: (1) the location of discharge, (2) the date and time thereof, (3) the type of waste, (4) the waste concentration and volume, and (5) the corrective actions taken and planned. The user shall follow-up with a written notification to the water/sewer superintendent containing the same information within seven days following the discharge.
C. 
Any user who discharges an accidental discharge or sludge load shall be liable for: (1) recovery of any resultant expenses, losses, and damages to the POTW; (2) recovery of any fines or settlements levied upon the city of Colville by any government agency or court of competent jurisdiction attributable to the discharge; and (3) applicable fines and penalties assessed upon the user by the city of Colville for noncompliance with this chapter.
(Ord. 1404 NS § 2.11, 2008)
The water/sewer superintendent shall exercise absolute discretion in whether to accept any load of liquid hauled wastes. In determining whether to accept a load, the water/sewer superintendent or his/her agents or assigns may collect samples of each hauled load and/or require the hauler to provide a wastewater analysis of any load prior to discharge.
A. 
Fees for discharge of liquid hauled wastes will be established as part of the user fee system as authorized in this chapter.
(Ord. 1404 NS § 2.12, 2008)