Chapter 13.20 SEWER SYSTEM

A. To prevent waste discharges from adversely affecting the sewer system, the operation of the treatment facilities, the quality of effluent from the treatment plant, or the quality of the receiving water through regulation and control of the quality and quantity of waste discharged to the City’s sewer system by any discharger.

B. To comply with all state and federal regulations in connection with the discharge of sewage waste.

C. To provide an equitable distribution of the City’s cost for acquisition, construction, reconstruction, maintenance, and operation of the City’s system.

D. To provide for the adoption, by resolution, of regulations to further promote and effect the above-numerated purposes. (Ord. 1205 § 5, 2020.)

13.20.015 Definitions.

The definitions given in this section shall be used in the interpretation of this chapter, the issuance of permits, the making of charges for service and all other operations of this chapter unless another meaning for the word is apparent from the context.

“Applicant” shall mean the person or his authorized agent making application for a permit for a sewer or plumbing installation and shall be the owner of premises to be served by the sewer for which a permit is requested.

“Backflow prevention device” shall mean any anti-backflow device as required pursuant to Section 5.02(E) of the Healdsburg Engineering Design Standards or as required by the California Plumbing Code.

“BOD” or “biochemical oxygen demand” shall mean the measure of decomposable organic material in domestic or industrial wastewaters as represented by the oxygen utilized over a period of five days at 20 degrees centigrade and as determined by the appropriate procedure in “Standard Methods.”

“Building” shall mean any structure used for human habitation, business or commercial activity, industry, recreation, public use, or other purpose containing sanitary facilities.

“Building sewer” shall mean that portion of any sewer beginning at the plumbing or drainage outlet of any building and extending to the property line.

“Certificate of private sewer lateral compliance” shall mean a certificate issued by the City engineer or his/her designee certifying that the private sewer main and/or private sewer lateral complies with the standards set forth in this chapter.

“Chlorine demand” shall mean the difference between the amount of chlorine added to a wastewater sample and the amount remaining at the end of a 30-minute period as determined by the procedures given in “Standard Methods.”

“City” shall mean the City of Healdsburg.

“City council” shall mean the governing body of the City.

“City engineer” is the City employee qualified through experience and professional licensure assigned the title of City engineer or a designee of the incumbent City engineer.

“COD” or “chemical oxygen demand” shall mean the measure of chemically decomposable material in domestic or industrial wastewater as represented by the oxygen utilized as determined by the appropriate procedure described in “Standard Methods.”

“Commercial owner” shall mean any owner who is not a residential owner, industrial owner or institutional owner.

“Contractor” shall mean an individual, firm, corporation, partnership, or association duly licensed by the state of California to perform the type of work to be done under permit.

“Discharger” shall mean any person that discharges or causes a discharge to a public sewer.

“Domestic wastewater” shall mean the water-carried wastes produced from noncommercial or nonindustrial activities and which result from normal human living processes.

“Dwelling unit” shall mean any single-family dwelling of one or more rooms having one or more plumbing fixtures suitable for residential occupancy by any number of persons living together as a single family, including single-family dwelling units, and each group of rooms constituting a dwelling unit for a single family in any multiple-dwelling structure.

“Effluent” shall mean the liquid outflow of any facility designed to treat, convey, or retain wastewater.

“Family” shall mean any one or more persons comprising a single family unit.

“Filterable residue” shall mean the solid matter in solution in the wastewater and shall be obtained by evaporation of a sample from which all suspended matter or nonfilterable residue has been removed by filtration as determined by the procedures in “Standard Methods.”

“Formula” shall mean the industrial wastewater treatment surcharge formula.

“Garbage” shall mean or include kitchen and table refuse, offal, swill and every accumulation of animal, vegetable and other matter that attends the preparation, consumption, decay or dealing in the storage of meats, fish, birds, fruits, or vegetables and all broken or discarded crockery, bottles and tin vessels. Dead animals, swill, offal and other savable waste matter having a value shall not be included within the meaning of the word “garbage.”

“Gravity separation interceptor” shall mean any facility designed, constructed, and operated for the purpose of removing and retaining dangerous, deleterious or prohibited constituents from wastewater by differential gravity separation before discharge to the public sewer.

“Industrial connection sewer” shall mean the sewer connecting the building sewer or building waste drainage system to the public sewer for the purpose of conveying industrial wastewater.

“Industrial owner” shall mean any owner on whose premises any manufacturing or processing activity for profit is engaged in, including the manufacturing or processing of agricultural products, animals, poultry, goods, wares or other products or materials.

“Industrial wastewater” shall mean all water-carried wastes and wastewater of the community excluding domestic wastewater and uncontaminated water, and shall include all wastewater from any producing, manufacturing, processing, institutional, commercial, agricultural or other operation where the wastewater discharged includes significant quantities of wastes of nonhuman origin.

“Inspector” shall mean a person authorized by the City engineer to inspect wastewater generation, conveyance, processing, and disposal facilities.

“Institutional owner” shall mean any owner of a public or nonprofit school, church, hospital, lodge, club, fire department, library, memorial building or other public or nonprofit activity.

“Lateral sewer” shall mean the sewer from the main sewer to the property line.

“Local sewering agency” shall mean the City of Healdsburg or other public agency legally authorized to construct, maintain and operate a system of lateral or collecting sewers.

“Main sewer” shall mean a public sewer designed to accommodate more than one lateral sewer.

“Multiple-lodging structure” shall mean any two or more lodging units in any single building or structure or group of buildings or structures, including any rooming house, hotel or motel, or bed and breakfast.

“Nonfilterable residue” shall mean that portion of the “total residue” of any wastewater sample that is retained by a filter when a sample is passed through a filter, as determined by the appropriate procedure described in “Standard Methods.”

“Ordinance” shall mean, unless otherwise specified, the sewer use ordinance.

“Outside sewer” shall mean a sanitary sewer beyond the City limits not subject to the control or jurisdiction of the City.

“Peak flow rate” shall mean the average rate at which wastewater is discharged to a public sewer during the highest 30-minute flow period in the preceding 12 months.

“Permit” shall mean any written authorization required pursuant to this or any other regulation of the City for the installation of any sewage works.

“Person” shall mean any individual, partnership, committee, association, corporation, public agency and any other organization or group of persons, public or private.

“Plant” shall mean the wastewater treatment plant of the City of Healdsburg.

“Premises” or “property” shall mean any lot, or any piece or parcel of land comprising two or more lots of record in one ownership, or any building or other structure or any part of any building or structure used or useful for human habitation or gathering or for carrying on a business or occupation or any commercial or industrial activity.

“Private sewer lateral” shall mean the sewer pipeline which connects a building or buildings to the public sewer. It includes both the building sewer and the lateral sewer.

“Private sewer main” shall mean a private sewer which serves multiple buildings to convey sewage to the public sewer. It includes all components of the private sewer main including the entire point of connection to the public sewer and any lateral sewer or building sewer connected to it.

“Public improvements standards” shall mean the minimum standards for public works construction in the City of Healdsburg and on file in the office of the City engineer.

“Public sewer” shall mean a sewer main lying within a public street or accepted public utility easement which is under the jurisdiction of the City or other public agencies. Public sewer does not include that portion of a lateral sewer within a public street or accepted public utility easement.

“Qualifying sewer lateral service call” shall mean any work on a private sewer lateral or private sewer main performed by a septic or sewer line cleaning business, plumber or similar service provider, where the service provider in the course of providing service encounters conditions indicating root intrusion or other permanent damage to the sewer lateral or main, such as deflection or separation of the lateral or main.

“Radioactive material” shall mean material containing chemical elements that spontaneously change their atomic structure by emitting any particles, rays or energy forms.

“Residential owner” shall mean any owner whose premises are used solely for residential purposes by any one or more persons.

“Sanitary sewer” shall mean a sewer which carries sewage and to which storm, surface and ground waters are not intentionally admitted.

“Section” shall mean a section of this chapter.

“Sewage” shall mean water and water-carried wastes, including industrial sewage and industrial wastes disposed of or disposable through plumbing outlets and carried through and ultimately disposed of by the municipal sewage disposal system.

“Sewer” shall mean a pipe or conduit for carrying sewage.

“Sewer lateral service provider” shall mean any person or business entity duly licensed by the state of California to perform the type of plumbing work associated with private sewer lateral or private sewer main service in the City for compensation, including but not limited to removal or clearing of roots, blockages by foreign objects, grease or lateral/main failure, and any repair or replacement of private sewer laterals or mains.

“Sewer service” shall mean the service and facilities for collection, treatment and disposal of sewage furnished or available to premises by the sewer system.

“Sewerage system” shall mean a network of wastewater collection, conveyance, treatment, and disposal facilities interconnected by sewers, and owned by the City.

“Shall” is mandatory and “may” is permissive.

“Single-family dwelling” shall mean one dwelling unit in a single structure.

“Solid wastes” shall mean the non-liquid-carried wastes normally considered to be suitable for disposal with refuse at a sanitary landfill refuse disposal site.

“Standard Methods” shall mean the current edition of “Standard Methods for the Examination of Water and Wastewater” as published by the American Public Health Association.

“Storm drain” shall mean a conduit which carries storm and surface or ground waters and drainage but excludes sewage and polluted industrial wastes.

“Street” shall mean any public highway, road, street, avenue, alley, way, easement, or right-of-way in the City.

“Total residue” is the material left in a vessel after evaporation of a sample of water, as determined by the appropriate procedure described in “Standard Methods.”

“Trade secrets” shall include but shall not be limited to any formula, plan, pattern, process, tool, mechanism, compound, procedure, production data or compilation of information which is not patented, which is known only to certain individuals within a commercial concern who are using it to fabricate, produce or compound an article of trade or a service having a commercial value, and which gives its user an opportunity to obtain a business advantage over competitors who do not know or use it.

“Trunk sewer” shall mean a sewer constructed, maintained, and operated by the City that conveys wastewater to the City’s treatment facilities and into which lateral and collecting sewers discharge.

“Uncontaminated water” shall mean any wasted water of the community not contaminated or polluted with wastewater and which is suitable or could readily be made suitable for discharge to the municipal storm water drainage system.

“User” shall mean discharger.

“Wastewater” shall mean the water-carried wastes of the community derived from human or industrial sources including domestic wastewater and industrial wastewater. Rainwater, ground water or drainage or uncontaminated water is not wastewater. (Ord. 1205 § 5, 2020.)

13.20.020 Prohibited substances.

No person shall discharge any substance causing the City not to comply with any state or federal regulation of sewage discharge, or any substance not amenable to treatment in the sewage system, or any substance which might tend to harm or adversely affect the sewer system, or any substance or combination of substances prohibited in regulations adopted under this chapter by the City Council. (Ord. 1205 § 5, 2020.)

13.20.030 Abatement of nonconforming wastewater discharge.

A. Any wastewater discharge not in compliance with the provisions of this chapter or regulations adopted hereunder is deemed to be a nuisance.

B. In the event the City engineer determines that any discharge into the sewer system presents an imminent hazard to the health and safety of the users of the system or to the maintenance and operation of the system itself, he shall order such discharge terminated. If such discharge is not terminated immediately, the City engineer shall take such steps as are necessary to shut off the flow of said discharge into the sewer system including disconnection of the user, if necessary.

C. All violations of the provisions of this chapter or of any regulations adopted pursuant thereto shall be nuisances within the meaning of Chapter 1.12 HMC and shall be abated accordingly.

D. All costs of abatement shall be borne by the user. (Ord. 1205 § 5, 2020.)

13.20.040 Damage to system.

As a condition of the use of the City’s sewer system, a discharger who discharges or causes the discharge of prohibited substances which cause damage to the City’s treatment processes, or any other damages resulting in costs to the City, shall be liable to the City for all damage occasioned thereby, regardless of faults. (Ord. 1205 § 5, 2020.)

13.20.050 Sewer service required.

No person owning or occupying or having under his control any premises situated or being within 150 feet of a public sewer in the City shall construct or maintain or suffer to be or remain upon such premises in the City any privy, vault or cesspool or any sink, drain or similar contrivance, except as in the manner provided in this chapter. (Ord. 1205 § 5, 2020.)

13.20.060 Sewer charges and regulations.

A. Persons making connections to sewers and using the same shall pay such fees and abide by regulations consistent with this chapter and Chapter 17.08 HMC or as the City Council shall, from time to time, adopt by resolution.

B. No person shall construct a building sewer, or a lateral sewer, or make any connection with any public sewer without first obtaining a written permit from the City and paying all fees and complying with all requirements and conditions required by regulations adopted by the City Council.

C. Any person discharging anything except domestic sewage into the sewer system at the time the ordinance codified in this chapter takes effect shall submit an application to the office of the City engineer within two months after the ordinance codified in this chapter takes effect and shall not discharge nondomestic sewage waste into the sewer system after nine months from the date of adoption of the ordinance codified in this chapter without a permit therefor. (Ord. 1205 § 5, 2020.)

13.20.070 Premises not to be offensive.

No person shall suffer or permit any premises belonging to or occupied by him or under his control, located in the City, or any cellar, vault, privy, cesspool, sewer or private drain thereon or therein, to become nauseous, foul or offensive or prejudicial to the public health or public comfort. (Ord. 1205 § 5, 2020.)

13.20.080 Separation of storm drainage and sewage.

No person, firm or corporation shall allow or permit any sewage of any kind from his premises to enter any of the storm drains of the City, whether by surface drainage, pipes or other means, nor shall storm drainage, that is, runoff from precipitation, be permitted to enter into the sewage system. (Ord. 1205 § 5, 2020.)

13.20.090 Supervision of sewer connections.

All connections with any public sewer in the City of Healdsburg, and all repairs thereof, including excavating and laying pipe from sewer to property line, shall be made or caused to be made under the direct supervision of the City, but at the cost and expense of the person, firm or corporation desiring the same to be done. (Ord. 1205 § 5, 2020.)

13.20.100 Excavation in street.

Whenever it is necessary to excavate from property line to sewers in public streets in the City, such excavation shall be made by the person, firm or corporation making application and all work shall be installed by an appropriately licensed contractor. (Ord. 1205 § 5, 2020.)

13.20.110 Permit for excavation and installation.

When any excavation for a sewer connection will be located in the streets of the City, the applicant for such permit shall apply to the City engineer for an encroachment permit and pay such fees as established from time to time by the City Council. (Ord. 1205 § 5, 2020.)

13.20.120 Reserved.

(Ord. 1205 § 5, 2020.)

13.20.130 Sewer charges – Rate schedule.

The City Council shall fix the rates to be charged for sewer service by the City, by resolution, and in so doing shall distinguish the different classes of service made available and fix rates appropriate to each class of service. Rates shall be fixed and revised from time to time with the objective that the City sewer system shall be operated on a sound economic basis as a revenue-producing enterprise. (Ord. 1205 § 5, 2020.)

13.20.140 Reserved.

(Ord. 1205 § 5, 2020.)

13.20.150 Reserved.

(Ord. 1205 § 5, 2020.)

13.20.160 Sewer charges – To be lien upon premises.

Each charge or rental levied pursuant to this chapter on property within the City shall be a lien upon the corresponding lot, land or premises served by a connection to the City sewer system. (Ord. 1205 § 5, 2020.)

13.20.170 Lateral permits.

No person shall construct a building sewer, lateral sewer, or make a connection with any public sewer without first obtaining a permit from the City and paying all fees and connection charges required under Chapter 17.08 HMC. (Ord. 1205 § 5, 2020.)

13.20.180 Public sewer construction permits.

No person shall uncover, use, alter, disturb, construct, extend, or connect to any public sewer without first obtaining a written permit from the City and paying all fees and connection charges and furnishing security and evidence of insurance as may be required in accordance with Chapter 17.08 HMC. The provision of this section requiring a permit shall not apply to contractors constructing sewers under contracts with the City. (Ord. 1205 § 5, 2020.)

13.20.190 Plans, profiles and specifications required.

The application for a public sewer construction permit shall be accompanied by complete plans, profiles and specifications, complying with all applicable ordinances, rules and regulations of the City, prepared by a registered civil engineer in the state of California, showing all details of the proposed work based on an accurate survey of the ground. The application together with the plan, profiles and specifications shall be examined by the City engineer who shall approve them as filed or require them to be modified as he deems necessary for proper installation. After approval by the City engineer, a permit shall be issued upon the payment of all connection charges, fees and furnishing bonds as required by the City. The permit shall prescribe such terms and conditions as the City engineer finds necessary in the public interest. (Ord. 1205 § 5, 2020.)

13.20.200 Public sewer construction.

Prior to the issuance of a permit for public sewer construction, the applicant shall enter into a development agreement in accordance with HMC 17.08.050. (Ord. 1205 § 5, 2020.)

13.20.210 Subdivisions.

The requirements of these regulations shall be fully complied with before any final subdivision map shall be approved by the City Council. The final subdivision map shall provide for the dedication of easements or rights-of-way in which public sewer lines are to be constructed. (Ord. 1205 § 5, 2020.)

13.20.220 Compliance with permit.

After approval of the application, evidenced by the issuance of a permit, no change shall be made in the location of the sewer, the grade, materials, or other details from those described in the permit or as shown on the plans and specifications for which the permit was issued, except with written permission from the City engineer. (Ord. 1205 § 5, 2020.)

13.20.230 Time limit on permits.

If work under a permit be not commenced within six months from the date of issuance, or if after partial completion the work be discontinued for a period of one year, the permit shall thereupon become void and no further work shall be done until a new permit shall have been secured. New connection, engineering and inspection fees shall be paid upon the issuance of said new permit. (Ord. 1205 § 5, 2020.)

13.20.240 Agreement.

The applicant’s signature on an application for any permit shall constitute an agreement to comply with such permit and all of the provisions, terms and requirements of this and other ordinances, rules and regulations of the City, and with the plans and specifications he had filed with his applications, if any, together with such corrections or modifications as may be made or permitted by the City, if any. Such agreement shall be binding upon the applicant and may be altered only by the City upon the written request for the alteration from the applicant. (Ord. 1205 § 5, 2020.)

13.20.250 Design and construction standards.

Minimum standards for the design and construction of sewers shall be in accordance with the design standards of the City, as adopted by resolution of the City Council. The City engineer may permit modifications or may require higher standards where unusual conditions are encountered. (Ord. 1205 § 5, 2020.)

13.20.260 Compliance with local regulations.

Any person constructing a sewer within a street shall comply with all state, county or City laws, ordinances, rules and regulations pertaining to the cutting of pavement, opening, barricading, lighting and protecting of trenches, backfilling and repaving thereof and shall obtain all permits and pay all fees required by the department having jurisdiction prior to the issuance of a permit by the City. (Ord. 1205 § 5, 2020.)

13.20.270 Easements or rights-of-way.

In the event an easement is required for the extension of the public sewer, the applicant shall procure and have accepted by the City Council a proper easement or grant of right-of-way sufficient to allow the laying, maintenance, and replacement of such extension or connection. Said width shall be determined by the City engineer. (Ord. 1205 § 5, 2020.)

13.20.280 Grade stakes.

Grade and line stakes shall be set by a registered civil engineer in the state of California prior to the start of work on any public sewer construction. The contractor shall be responsible for accurately transferring grades to grade bars and sewer invert. (Ord. 1205 § 5, 2020.)

13.20.290 Persons authorized to perform work.

Only properly licensed contractors shall be authorized to perform the work of public sewer construction. All terms and conditions of the permit issued by the City to the applicant shall be binding on the contractor. The requirements of this section shall apply to lateral sewers installed concurrently with public sewer construction. (Ord. 1205 § 5, 2020.)

13.20.300 Protection of excavation.

The applicant shall maintain such barriers, lights and signs as are always necessary to give warning to the public that a sewer is under construction and of each dangerous condition to be encountered as a result thereof. He shall also likewise protect the public in the use of the sidewalk against any such conditions in connection with the construction of the sewer; streets, sidewalks, parkways, and other property damaged in the course of the work shall be reconstructed in a manner satisfactory to the City. (Ord. 1205 § 5, 2020.)

13.20.310 As-built drawings.

As-built drawings showing the actual location of all mains, structures, tees, and laterals shall be filed with the City before final acceptance of the work. (Ord. 1205 § 5, 2020.)

13.20.320 Completion of sewer required.

Before any acceptance of any sewer line by the City and prior to the admission of any sewage into the system, the sewer line shall be tested and shall be complete in full compliance with all requirements of the City standards and to the satisfaction of the City engineer. (Ord. 1205 § 5, 2020.)

13.20.330 All work to be inspected.

All lateral and main sewer construction work shall be inspected by the City engineer to ensure compliance with all requirements of the City. No lateral sewer shall be covered at any point until it has been inspected and passed for acceptance. No sewer shall be connected to the public sewage collection system until the work covered by the permit has been completed, inspected and approved by the City engineer. (Ord. 1205 § 5, 2020.)

13.20.340 Notification.

It shall be the duty of the person doing the work authorized by permit to notify the office of the City engineer that said work is ready for inspection. Such notification shall be given not less than 24 hours before the work is to be inspected. It shall be the duty of the person doing the work to make sure that the work will stand the tests required by the City before giving the above notification. (Ord. 1205 § 5, 2020.)

13.20.350 Condemned work.

When any work has been inspected and the work condemned and no certification of satisfactory completion given, a written notice to that effect shall be given instructing the owner of the premises, or the agent of such owner, to repair or replace the sewer or other work authorized by the permit, in accordance with the ordinances, rules and regulations of the City. (Ord. 1205 § 5, 2020.)

13.20.360 All costs paid by owner.

All costs and expenses incident to the installation and connection of any sewer or other work for which a permit has been issued shall be borne by the owner. The owner shall indemnify the City from any loss or damage that may directly or indirectly be occasioned by the work. (Ord. 1205 § 5, 2020.)

13.20.370 Liability.

The City and its officers, agents and employees shall not be answerable for any liability or injury or death to any person or damage to any property arising during or growing out of the performance of any work by any such applicant. The applicant shall be answerable for, and shall save the City and its officers, agents and employees harmless from, any liability imposed by law upon the City or its officers, agents or employees, fees and interest incurred in defending same or in seeking to enforce this provision. The applicant shall be solely liable for any defects in the performance of his work or any failure which may develop therein. (Ord. 1205 § 5, 2020.)

13.20.380 Industrial wastewater discharge permits.

No person intending to discharge anything except domestic sewage shall make a connection to the sewer system without first applying to and receiving from the office of the City engineer a permit therefor. This permit shall be in addition to all other permits required by the City.

Applicants for an industrial wastewater discharge permit shall complete the City’s application form available at the office of the City engineer.

Upon receipt of all required information, the application shall be evaluated by the City engineer against the requirements of Chapter 13.24 HMC, with all other applicable provisions of this chapter, and as to the capacity of the City’s wastewater facilities to convey, treat and dispose of the wastewater.

The application shall be approved if the applicant has furnished all requested information, complied with all applicable requirements of this chapter and the City engineer determines that adequate, unallocated capacity exists in the City’s facilities to convey, treat and dispose of the wastewater. When properly signed by the City engineer, the application form shall constitute a valid industrial wastewater discharge permit. A copy of the signed permit will be returned to the applicant.

The industrial wastewater discharge permit may require pretreatment of industrial wastewaters before discharge; restriction of peak flow discharges may include conditions such as, but not limited to, discharge of certain wastewater only to specified sewers of the City, relocation of point of discharge, prohibition of discharge of certain wastewater components, restriction of discharge to certain hours of the day, payment of additional charges to defray increased costs of the City created by the wastewater discharge and such other conditions as may be required to effectuate the purpose of this chapter.

A permit for industrial wastewater discharge is not transferable without the prior written consent of the City engineer.

No persons shall discharge industrial wastewaters in excess of the quantity or quality limitations set by the industrial wastewater discharge permit. Any person desiring to discharge wastewaters or use facilities which are not in conformance with the industrial wastewater permit should apply to the City engineer for an amended permit. (Ord. 1205 § 5, 2020.)

13.20.390 Change of industrial wastewater permit restrictions.

The City engineer may change the restrictions or conditions of an industrial wastewater discharge permit from time to time as circumstances may require. The City engineer shall allow an industrial discharger a reasonable period of time to comply with any changes in the industrial wastewater permit required by the City engineer or regulatory agencies of the state and federal governments. (Ord. 1205 § 5, 2020.)

13.20.400 Suspension of permit for industrial wastewater discharge.

The City engineer may suspend an industrial wastewater discharge permit for a period of not to exceed 45 days when such suspension is necessary in order to stop a discharge which presents an imminent hazard to the public health, safety or welfare, to the local environment, or to the City’s sewerage system.

Any discharger notified of a suspension of his industrial wastewater permit shall immediately cease and desist the discharge of all industrial wastewater to the sewerage system. In the event of a failure of the discharger to comply voluntarily with the suspension order, the City engineer shall take such steps as are reasonably necessary to ensure compliance.

Any suspended discharger may file with the City engineer a request for City Council hearing in which event the City Council shall meet within 14 days of the receipt by the City engineer of such request. The City Council shall hold a hearing on the suspension and shall either confirm or revoke the action of the City engineer. Reasonable notice of the hearing shall be given to the suspended discharger in the manner provided for in HMC 13.20.420. At this hearing, the suspended discharger may appear personally or through counsel.

The City engineer shall reinstate the industrial wastewater permit upon proof of satisfactory compliance with all discharge requirements of the City. (Ord. 1205 § 5, 2020.)

13.20.410 Revocation of permit for industrial wastewater discharge.

The City Council may revoke an industrial wastewater discharge permit upon a finding that the discharger has violated any provision of this chapter. No revocation shall be ordered until a hearing on the question has been held by the City Council. At this hearing, the discharger may appear personally or through counsel. Notice of the hearing shall be given to the discharger in the manner provided in HMC 13.20.420.

Any discharger whose industrial wastewater permit has been revoked shall immediately stop all discharge of any liquid-carried wastes covered by the permit to any public sewer that is tributary to a sewer or sewerage system of the City. The City engineer may disconnect or permanently block from such public sewer the industrial connection sewer of any discharger whose permit has been revoked if such action is necessary to ensure compliance with the order of revocation.

Before any further discharge of industrial wastewater may be made by the discharger, he must apply for a new industrial wastewater discharge permit, pay all charges that would be required upon initial application together with all delinquent fees, charges and penalties and such other sums as the discharger may owe to the City. Costs incurred by the City in revoking the permit and disconnecting the industrial connection sewer shall be paid for by the discharger before issuance of a new industrial wastewater discharge permit. (Ord. 1205 § 5, 2020.)

13.20.420 Notice.

The City engineer shall notify any person found to be in violation of this chapter, or requirement of a permit issued hereunder, before the City engineer takes any action to implement suspension or revocation. The City engineer shall take no action until the elapse of 10 days from the date notice is given.

Unless otherwise provided herein, any notice required to be given by the City engineer shall be in writing and served in person or by registered or certified mail. If served by mail, the notice shall be sent to the last address known to the City engineer. Where the address is unknown, service may be made upon the owner of record of the property involved.

Notice shall be deemed to have been given at the time of deposit, postage prepaid, in a facility serviced by the United States Postal Service. (Ord. 1205 § 5, 2020.)

13.20.430 Connections outside the City limits.

The City Council may, if a health hazard exists, or if the City Council finds it in the best interest of the City and system capacity is adequate, authorize a permit to connect to the City sewer for properties outside the City.

The applicant shall first enter into a contract in writing whereby he shall bind himself, his heirs, successors and assigns to abide by all ordinances, rules and regulations in regard to the manner in which such sewer shall be used, the manner of connecting therewith, and the plumbing and drainage in connection therewith and also shall agree to pay all fees required for securing the permit; annexation, development connection fees and monthly sewer service charges in the amount set by the City for the privilege of using such sewer. (Ord. 1205 § 5, 2020.)

13.20.440 Prohibited wastes.

No person shall discharge, cause, or permit to be discharged into any public sewer the following wastes:

A. Any liquid or water having a temperature higher than 150 degrees Fahrenheit.

B. Any water or waste containing floatable grease, oil, fat or ether-soluble matter in excess of 50 parts per million, or dispersed nonfloatable grease, oil, fat or ether-soluble matter other than soap, in excess of 500 parts per million.

C. Any gasoline, flammable or explosive liquid, solid or gas.

D. Any garbage, except garbage shredded to one-quarter-inch maximum size from individual dwelling units. In no event will industrial, commercial, or institutional sewer systems qualify for the exception.

E. Any ashes, bones, hair, whole blood, cinders, and mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch manure, or any other solids or viscous substances capable of causing obstruction to the flow in sewers or other interference with the proper operation of the sewage works.

F. Any waters or wastes having a pH lower than 6.0 or higher than 9.0 or having any other corrosive property capable of causing damage or hazard to structures, equipment and personnel of the sewage works.

G. Any waters or wastes containing a toxic or poisonous substance in sufficient quantity to injure or interfere with any sewage treatment process, constitute a hazard to humans or animals, or create any hazard in the receiving waters of the plant.

H. Any waters or wastes containing suspended solids or dissolved matter of such character and quantity that unusual attention or exposure is required to handle such materials at the plant.

I. Any septic tank sludge, except at an authorized location with a valid disposal permit.

J. Any waters or wastes containing more than 0.1 milligram per liter of dissolved sulfides.

K. Any radioactive waste in an amount greater than recommended by local or state public health agencies.

L. Any other solid or liquid which is determined by the City engineer to be detrimental to the sewer system or treatment plant.

M. Any water added for the purpose of diluting wastes which would otherwise exceed applicable maximum concentration limitations.

N. Any water or wastes containing any of the following toxic substances exceeding the concentrations listed:

Toxicants	Maximum Allowable Concentration (mg/l)
Aluminum	5.0
Ammonia (as nitrogen)	20.0
Antimony	5.0
Arsenic; arsenicals	0.5
Barium	5.0
Beryllium	1.0
Bromine, chlorine, and iodine (total)	10.0
Boron	1.0
Cadmium	0.02
Total identifiable chlorinated hydrocarbons	0.002 (trace)
Chromium (total)	0.01
Cobalt	0.5
Copper	0.5
Cyanides	0.1
Fatty acids	5.0
Fluorides	2.0
Formaldehydes	5.0
Iron	5.0
Lead	0.5
Manganese	1.0
Mercury	0.001
Phenol and derivatives	0.5
Nickel	0.2
Selenium	5.0
Silver	0.05
Zinc	1.0

O. Any water or wastes having a median toxicity limit (TLm) lower than 25 percent as determined by a 96-hour bioassay.

P. Any waters or wastes containing algicides, fungicides, antibiotics, insecticides, strong oxidizing agents or strong reducing agents.

Q. Any noxious or malodorous gas or substances capable of creating a public nuisance either by itself or by interaction with other substances.

R. Any wastes requiring an excessive quantity of chlorine or other chemical compound used for disinfection purposes.

S. Any waste producing excessive discoloration or wastewater or treatment plant effluent.

T. Any garbage, cheese, fruit, vegetable, fish, animal or other solid material from any food processing plant, industrial plant or retail grocery store, unless the discharge has been shredded to one-quarter-inch maximum size and does not contain more than five percent solid material by weight (dry basis).

U. Any water or wastes containing recognizable portions of the human anatomy.

V. Any unusual volume of flow or concentration of waste, from a commercial or industrial source, of any constituent or in quantity of flow for any period of duration longer than 15 minutes that is five times the average 24-hour concentration or flow during normal operation.

W. Any water or wastes containing substances which are not amenable to treatment or which cause the treatment plant effluent to fail to meet the discharge requirements established by the State Water Resources Control Board, the California Regional Water Quality Board, or any other state or regulatory agency. (Ord. 1205 § 5, 2020.)

13.20.450 Pretreatment of wastewaters.

A wastewater pretreatment system or device may be required by the City engineer to treat flow prior to discharge to the sewer when it is necessary to restrict or prevent the discharge to the sewer of certain waste constituents not in compliance with HMC 13.20.440, Prohibited wastes, to distribute more equally over a longer time period any peak discharges of wastewaters or to accomplish any pretreatment result required by the City engineer. All pretreatment systems or devices shall be approved by the City engineer, but such approval shall not absolve the discharger of the responsibility of meeting any effluent limitation required by the City. All pretreatment systems judged by the City engineer to require engineering design shall have plans prepared and signed by an engineer of suitable discipline licensed in the state of California.

This chapter refers to and enforces the pretreatment standards published in the Federal Register by the EPA pursuant to Section 107(b) of the Federal Water Pollution Control Act Amendments of 1972.

Normally, a gravity separation interceptor, equalizing tank, neutralization chamber and control manhole will be required, respectively, to remove prohibited settleable and floatable solids, to equalize wastewater streams varying greatly in quantity and/or quality, to neutralize low or high pH flow and to facilitate inspection, flow measurement and sampling.

Floor drains from commercial or manufacturing buildings, warehouses or multi-use structures shall not discharge directly to the sewer but shall first discharge to a gravity separation interceptor.

Grease, oil, and sand interceptors shall be provided by the waste discharger when, in the opinion of the City engineer, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand, or other harmful ingredients. All interceptors shall be of a type and capacity approved by the City engineer and shall be so located as to be readily and easily accessible for cleaning and inspection.

No person shall discharge, cause, allow, or permit to be discharged into the sanitary sewer system of the City, or any part thereof, any garbage, or any fruit, vegetable, animal, fish, or other solid industrial wastes resulting from the processing, packaging or canning of fruits, vegetables, fish, or other foods or products, unless such wastes have first been passed through screens having openings not exceeding one thirty-second of an inch in dimension. The City engineer, by written permit, may authorize the discharge into the sanitary sewer system of such wastes if they are first passed through screens having larger openings if the City engineer is satisfied that such larger openings will provide screening efficiency and effectiveness equal to or better than that provided by the above-specified openings of one thirty-second of an inch in dimension. Each person who shall discharge, cause, allow, or permit to be discharged into the sanitary sewer system of the City, or any part thereof, any such wastes shall install and maintain in good operating order screens as above-specified and appurtenances thereto, including, but not limited to, all necessary conveyors and elevators, all in sufficient quantity and of sufficient size and quality to continuously and effectively screen not less than 100 percent of the peak hydraulic and solids loading imposed on such screens and appurtenances during any processing period. Sufficient additional screens and appurtenances shall be provided by each person who discharges such wastes into the sanitary sewer system to provide standby facilities.

No person shall discharge, cause, or allow or permit to be discharged into the sanitary sewer system, or any part thereof, any other industrial wastes unless such wastes have first been passed through screens having openings not exceeding three-quarters of an inch in dimension; provided, that the City engineer, by written permit, may authorize the discharge of such wastes in the sewer system if they are first passed through screens having larger openings, if the City engineer is satisfied that such larger openings will provide screening efficiency and effectiveness equal to or better than that provided by the smaller openings.

No one shall discharge any screened wastes into the sanitary sewer system, or any part of the system, unless and until he has obtained from the City engineer a permit to do so. The City engineer shall require such person to provide to the City engineer a report prepared by a registered engineer which shows, to the satisfaction of the City engineer, that such wastes can be processed successfully by the physical and biological processing units of the treatment plant and carried through the sewer collection system. (Ord. 1205 § 5, 2020.)

13.20.460 General.

The design and construction of all sewers, connections to sewers, pretreatment facilities and appurtenances which are directly or indirectly connected to the City sewer and wastewater treatment system shall be in accordance with all state laws, City ordinances, City standard drawings, specifications and regulations as may be adopted from time to time by resolution of the City Council, and in accordance with generally accepted engineering practice. Any public works to be constructed shall be designed by an engineer licensed to practice in California.

No property owner shall maintain a private sewer lateral or private sewer main in a defective condition. As used in this chapter, “defective condition” includes, but is not limited to: (A) displaced joints, leaks or breaks; (B) root intrusion; (C) substantial deterioration; (D) damaged, uncapped or missing sewer cleanout; (E) damaged or missing backflow prevention device when required; (F) a condition that will allow infiltration and inflow of extraneous water, including, but not limited to, rain, storm water or groundwater, or which allows exfiltration of sewage; (G) a condition that materially increases the possibility of a blockage or overflow; (H) construction without a proper permit or with materials not approved by the City; (I) lack of a proper connection to the City’s sewer system; (J) otherwise in violation of City requirements; or (K) in such a condition that the tests required by this chapter cannot be accomplished to the satisfaction of the City.

Separate sewer service connections are required for each separate building whether such building is on the same or a different lot or parcel of land.

Exceptions may be made upon appeal to the City engineer or City Council, where several single-family, multifamily, commercial or industrial units are constructed within several buildings on the same parcel of land, where it is agreed that such land can be adequately served by a single private sewer main.

If the land is later divided, then separate laterals shall be provided for each building or several buildings on each separate parcel of land or for each air space unit unless the private sewer main has been legally made the responsibility of the property or unit owner(s). Such property owner or owner’s association will be responsible for construction, reconstruction, maintenance, and repair of the private sewer main.

In the case of the exception, a private sewer main may be placed in the proposed development with a private sewer lateral to each building.

All private sewer mains and private sewer laterals shall be connected to the public sewer main at a single location approved by the City engineer, and a manhole or cleanout shall be provided on the private sewer main at or near the point of connection with the City sewer system, normally near the property line. All such private sewer mains and all such private sewer laterals thereto shall be installed at the expense of the property owner or developer. The property owner will be responsible for all aspects of construction for new private sewer laterals and/or new private sewer mains. The property owner will be responsible for all aspects of reconstruction, maintenance, repair, and response related to sanitary sewer overflows from private sewer mains, and all portions of the private sewer laterals as provided for in HMC 13.20.465. (For private sewer mains, the property owner or owner’s association shall apply for, and be responsible for, a single billing for the service.)

Where such connections preexist these regulations, they shall be permitted until sale of the parcel, at which time a separate private sewer lateral shall be provided for the sold parcel.

Existing private sewer mains and/or private sewer laterals may be used in connection with new buildings only when they are found upon examination and test to meet all requirements of this chapter and the City standards. All test documentation (pressure testing, CCTV inspection, visual inspection reports, etc.) shall be submitted to the City engineer for approval and authorization to use the existing private sewer lateral or private sewer main prior to placing it into service.

In all buildings in which any building sewer is too low to permit gravity flow to the public sewer, sanitary sewage carried by such building sewer shall be lifted by artificial means, approved by the building official, and discharged to the public sewer at the expense of the owner. Adequate anti-backflow devices shall be installed by the applicant.

The connection of the building sewer into the public sewer shall be made at the lateral or “T” branch, if such lateral or “T” branch is available at a suitable location. Where properly located “T” branch is not available, a neat hole may be cut into the public sewer to receive the building or lateral sewer, with entry in the downstream direction at an angle of 45 degrees. A wye saddle shall be used for the connection and in no case shall the pipe protrude inside the main sewer. A smooth, neat joint shall be made, and the connection made secure and watertight, including by encasement in concrete, if so determined by the engineer. The connection to the public sewer shall be made in the presence of the City engineer and under his supervision and direction. Any cutting of public mains shall be done only by City personnel, cost borne by applicant. Any damage to the public sewer shall be repaired at the cost of the applicant to the satisfaction of the City engineer.

All excavations for a lateral sewer installation shall be adequately guarded with barricades or lights to protect the public from hazard. Streets, sidewalks, parkways, and other property damaged in the course of the work shall be restored in a manner satisfactory to the City engineer.

All domestic or sanitary wastewaters from restrooms, showers, drinking fountains, etc., shall be kept separate from all industrial wastewaters until the industrial wastewaters have passed through any required pretreatment system or device. A control manhole of a design approved by the City engineer shall be furnished and installed by certain designated industrial wastewater dischargers to facilitate visual inspection, sampling, and flow measurements by personnel of the City. This control manhole shall be located off the industrial premises or, if within the plant fence, a special locked gate shall be provided, with keys to the gate lock given to the City. Unrestricted access to this control manhole shall always be available to authorized personnel of the City. The control manhole may be used as a junction manhole for domestic sewage and industrial wastes provided the junction occurs downstream of the sampling or flow measuring point.

Each discharger shall provide protection from accidental discharge of prohibited materials or other wastes regulated by this chapter. Where necessary, or as directed by the City engineer, retention basins, dikes, storage tanks or other devices designed to eliminate, neutralize, offset or otherwise negate the effects of prohibited materials or waste discharges in violation of this chapter shall be installed. (Ord. 1205 § 5, 2020.)

13.20.465 Responsibilities for private sewer mains and private sewer laterals.

Private sewer laterals shall be maintained by the owner of the property served from the building being served up to the front property line, provided a cleanout accessible to maintenance forces is available. If an accessible cleanout is not available, the owner shall be responsible for all aspects of maintenance, repair, or replacement of the private sewer lateral to its connection to the public main. For the purposes of this section a “P-trap” is not an accessible cleanout.

The owner of any premises is responsible for all aspects of the maintenance of the private sewer main and/or the building sewer lateral. The owner shall perform all necessary maintenance to keep all private sewer mains or building sewer laterals free from roots, grease deposits, and other solids that may impede the flow or obstruct the transmission of sewage. The owner shall perform all necessary repairs, including replacement, of all components of the private system (sewer lateral, sewer main, building sewer, etc.) to keep it in good condition and free from structural defects, cracks, breaks, openings, and missing portions.

The owner of any premises is also responsible for any civil or administrative liabilities, or other penalties allowed by law, associated with sanitary sewer overflows caused by owner’s failure to comply with provisions of this section.

All private sewer mains and/or private sewer laterals serving a property shall be inspected, at the property owner’s expense, by closed circuit television (CCTV inspection) and their operational conditions verified and tested by means approved by the City engineer, upon the occurrence of one or more of the following general conditions:

A. Upon the occurrence of a qualifying sewer lateral service call. The CCTV inspection must be completed, all necessary repairs completed as specified in any notice of violation issued by the City, and a certificate of private sewer lateral compliance issued by the City;

B. Upon issuance of a building permit with a valuation of $25,000 or more if no inspection/replacement of the private sewer main and/or lateral and issuance of a certificate of private sewer lateral compliance has occurred within the previous 20 years prior to issuance of the building permit. The CCTV inspection must be completed, and a certificate of private sewer lateral compliance issued prior to conducting a final inspection or issuance of a certificate of occupancy. For the purposes of determining the valuation of work subject to the $25,000 threshold any work required by the Americans with Disabilities Act (“ADA”) or to add fire sprinklers as required by the City shall not be included when determining whether a private sewer lateral is subject to inspection and testing;

C. The occurrence of one sanitary sewer overflow caused by the private sewer main and/or lateral. The CCTV inspection must be completed, all necessary repairs completed as specified in any notice of violation issued by the City, and a certificate of private sewer lateral compliance issued by the City;

D. A change of the use of the structure served from: (1) residential to nonresidential uses; (2) to a nonresidential use that will result in a higher flow than the current nonresidential use; and (3) nonresidential uses where the structure served has been vacant/unoccupied for more than three years. The CCTV inspection must be completed, and a certificate of private sewer lateral compliance issued prior to conducting a final inspection or issuance of a certificate of occupancy;

E. Upon replacement or repair of any part of the sewer lateral;

F. Upon significant repair or replacement of the main sewer line to which the lateral is attached.

The CCTV inspection shall be conducted by a licensed contractor who is qualified to provide video inspections. The contractor must have both a City business license and a state of California contractor’s license. All private sewer mains and/or private sewer laterals shall be inspected by CCTV video.

The property owner shall submit a video recording of the private sewer main/lateral inspection to the department of public works for review with the appropriate review fee as established by the City’s master fee schedule. At the beginning of such video, the qualified contractor shall state the address of the property and take a photograph of the building whose lateral is being videoed, which shall be submitted with the video inspection to the public works department.

The property owner or duly appointed agent for the property owner shall notify the City of the time and date of the CCTV inspection at least seven calendar days prior to the inspection.

Prior to inspection, the private sewer main and/or private sewer lateral shall be thoroughly cleaned.

An inspection shall be valid for a period of six months from the date of the inspection. If a property owner fails to obtain a certificate of private sewer lateral compliance within six months after obtaining a CCTV inspection the department of public works may, in its discretion, require the property owner to obtain another inspection before issuing a certificate of private sewer lateral compliance.

A property complies with the provisions of this section if the CCTV inspection and other test parameters verify all of the following conditions as approved by the City engineer:

1. The private sewer main and/or private sewer lateral is free of roots, grease deposits, and other solids which may impede or obstruct the transmission of sewage;

2. There are no improper or illegal connections to the private sewer main and/or private sewer lateral such as sump pumps, down spouts or area drainage facilities;

3. All joints in the private sewer main and/or private sewer lateral are tight and sound to prevent the exfiltration of sewage and the infiltration of groundwater, storm water and/or rainwater;

4. The private sewer main and/or private sewer lateral is free of structural defects, cracks, breaks, or missing portions and the grade is reasonably uniform without major sags or offsets, including all components of its connection to the public sewer main;

5. The private sewer lateral is equipped with at least one cleanout located within five feet of the building footprint, a cleanout located at the property line and with a backflow prevention device as required by this chapter;

6. None of the other defective conditions referred to in this section exist on the property.

If the City engineer determines, in his or her sole discretion, that a private sewer main and/or private sewer lateral is in a defective condition, the city shall provide a written notice of violation that meets the criteria contained in HMC 13.20.420. The property owner shall cause all repairs necessary to bring the private sewer main and/or lateral into compliance as outlined in the notice of violation. All costs of repair or replacement of the private sewer main and/or private sewer lateral shall be borne by the property owner, including obtaining all necessary permits prior to commencement of construction.

Upon completion of repairs or replacement of the private sewer main and/or private sewer lateral, the property owner shall have another CCTV inspection and other test parameters conducted in order to verify that the repairs or replacement have been properly completed, pursuant to this chapter. The CCTV inspection and other reports shall be submitted to the City engineer or his representative. All work shall be done to the satisfaction of the City engineer or his representative, in accordance with all state laws, City ordinances, City standard drawings, specifications and regulations.

The City shall review the final submitted CCTV inspection for compliance with this chapter. When all conditions are met to the satisfaction of the City, the private sewer main and/or private sewer lateral shall be certified as complying with the provisions of the Healdsburg Municipal Code. The City shall thereupon issue a certificate of private sewer lateral compliance to the property owner, noting that based on the evidence submitted the private sewer main and/or private sewer lateral serving the property is properly equipped, structurally sound and meets the requirements of the City. Once a certificate of private sewer lateral compliance is issued, the private sewer main and/or private sewer lateral for which the certificate of compliance is issued shall not require testing for a period of 20 years from the date of issuance of the certificate of compliance unless the City has reason to believe the private sewer main and/or private sewer lateral is in a defective condition as defined in HMC 13.20.460 or upon the occurrence of one or more of the general conditions described in subsections (C) through (F) of this section. The certificate of private sewer lateral compliance shall not imply a warranty or guarantee of any kind. (Ord. 1205 § 5, 2020.)

13.20.470 Technical requirements.

The following technical provisions shall be used in the design of sewers connected to or a part of the City sewage system. For facilities for which specific requirements are not provided, the City engineer shall determine the design parameters.

A. Sizing of all sewers shall be based upon a complete drainage study of the present proposal as well as all existing and potential upstream contributing areas. Minimum main size is six-inch diameter.

B. Sewers shall be designed to handle a per capita average flow of 100 gallons per day for residential areas.

C. Commercial and industrial areas will require the design of sewers to handle the quantities discharged as determined by the applicant’s engineer with the approval of the City engineer.

D. Design of the sewer lines will be based upon peak flows in accordance with the standard practice adopted by the American Society of Civil Engineers in their Manual on Engineering Practice No. 37, latest revision.

E. All sewers shall be designed to flow two-thirds full under peak design conditions.

F. The minimum size of a lateral sewer shall be four-inch diameter. The slope of a four-inch lateral sewer shall be a minimum of one-half foot per 100 feet. The slope of a six-inch lateral sewer shall be a minimum of one-quarter foot per 100 feet. The minimum cover shall be 24 inches unless a variance from these standards is given in writing by the City engineer.

G. Sewer slopes shall be sufficient to maintain a velocity of two feet per second.

H. All materials for sewer mains and laterals shall be as shown in City standard drawings and specifications, or as approved in writing by the City engineer.

I. Manholes shall be used to make all turns.

J. Manholes on straight sewer lines shall be placed a maximum of 400 feet center to center.

K. Sewer mains in curved streets shall be on a minimum 200-foot radius. Manholes between tangents shall not be more than five feet from the street centerline.

L. Manhole covers in undeveloped areas will be set one foot above existing grade.

M. All manhole stubs shall be shown on the plans by size.

N. Cleanout or manhole shall be used on dead-end lines.

O. The locations of all sewer mains shall be designated by the City engineer.

P. All sewer laterals shall be extended to the property line and shall be a minimum four-inch diameter but in no case shall the sewer lateral on public property be smaller than the lateral on private property.

Q. The lateral invert at the curb line shall be three feet below the curb flowline grade, unless lot grades dictate a greater depth.

R. Lift stations shall be avoided where possible. However, it is recognized that they may have to be used and the following design requirements are to be adhered to in their design:

1. Pumps or ejector units shall be provided in duplicate arranged for positive priming.

2. Capacity shall be provided to handle ultimate peak flow from the tributary area. When the tributary area exceeds 300 acres the capacity shall be provided to handle the peak ultimate flow with the largest pump out of service. Staged installation of pumps is allowed providing space is provided for future installation.

3. Access shall be provided to the site for removal and repair of equipment.

4. A means of dewatering force mains shall be provided.

5. An overflow device will be provided if possible, as approved by the City engineer.

6. Force mains shall be designed to be able to pass the peak flows without excessive pressures, and the materials shall be corrosive-resistant to the type of sewage being delivered through them. Force mains shall be designed as to obtain a minimum of three feet per second velocity during the pumping period.

S. New sewers shall have a maximum allowable infiltration/exfiltration rate of 200 gallons per day per inch diameter of sewer per mile. (Ord. 1205 § 5, 2020.)

13.20.480 Wastewater sampling.

Periodic measurements of flow rates, flow volume, COD, BOD, grease and nonfilterable residue for use in determining the annual industrial wastewater treatment surcharge and such measurements of other constituents believed necessary for the City engineer shall be made by all industrial wastewater dischargers, unless specifically relieved of such obligation by the City engineer. All sampling, analyses and flow measurements of industrial wastewaters shall be performed by a state-certified independent laboratory or by a laboratory of the industrial discharger approved by the City engineer. If performed by City’s personnel, an appropriate charge shall be paid by the discharger requesting the tests. Prior to submittal to the City of data developed in the laboratory of an industrial discharger, the results shall be verified by a responsible administrative official of the industrial discharger under the penalty of perjury.

All wastewater analyses shall be conducted in accordance with the appropriate procedure contained in “Standard Methods.” If no appropriate procedure is contained therein, the standard procedure of the industry or a procedure judged satisfactory by the City engineer shall be used to measure wastewater constituents. Any independent laboratory or discharger performing tests shall furnish any required test data or information on the test methods or equipment used, if requested to do so by the City engineer.

All dischargers making periodic measurements shall furnish and install at the control manhole or other appropriate location a calibrated flume, weir, flow meter or similar device approved by the City engineer and suitable to measure the industrial wastewater flow rate and total volume. A flow indicating, recording, and totalizing register may be required by the City engineer. In lieu of wastewater flow measurements, the City engineer may accept records of water usage and adjust the flow volumes by suitable factors to determine peak and average flow rates for the specific industrial wastewater discharge.

The sampling, analysis and flow measurement procedures, equipment and results shall be subject at any time to inspection by the City. Sampling and flow measurement facilities shall be such as to provide safe access to authorized personnel.

Those industrial wastewater dischargers required by the City engineer to make periodic measurements of industrial wastewater flows and constituents shall annually make the minimum number of such measurements required. The minimum requirement for such periodic measurements shall be at least one 24-hour measurement per year. Representative samples of the industrial wastewater shall be obtained at least once per hour over the 24-hour period, properly refrigerated, composited according to measured flow rates during the 24 hours and analyzed for the specific wastewater constituents. Dischargers required to sample on only a few days per year shall sample during the period of highest wastewater flow and wastewater constituent discharges. Industrial plants with large fluctuations in quantity or quality of wastewater may be required to provide continuous sampling and analyses for every working day. When required by the City engineer, dischargers shall install and maintain in proper order automatic flow-proportional sampling equipment and/or automatic analysis and recording equipment.

Measurements to verify the quantities of waste flows and waste constituents reported by industrial dischargers will be conducted on a random basis by personnel of the City. (Ord. 1205 § 5, 2020.)

13.20.490 Accidental discharges.

Dischargers shall notify the City engineer immediately when accidental discharges of wastes in violation of this chapter occur so that countermeasures may be taken by the City to minimize damage to the sewer system treatment plant, treatment processes and the receiving waters. Such notification will not relieve dischargers of liability for any expense, loss or damage to the sewer system, treatment plant, or treatment process, or for any fines imposed on the City on account thereof by any state or federal regulatory agencies.

In the event of accidental discharge in violation of this chapter, the discharger shall furnish the City engineer, within 15 days of the date of occurrence, a detailed written statement describing the causes of the accidental discharge and the measures being taken to prevent future occurrence.

In order that employees of dischargers be more fully informed of City requirements, copies of these regulations (displaying this section) shall be permanently posted on bulletin boards of dischargers together with such other industrial wastes information and notices which may be furnished by the City from time to time directed toward more effective water pollution control.

Sewer connections within the discharger’s plumbing or drainage system shall be appropriately labeled to warn operating personnel against discharge of any substance in violation of this chapter. (Ord. 1205 § 5, 2020.)

13.20.500 Right of entry.

The City engineer and other duly authorized employees of the City bearing proper credentials and identification shall be permitted to enter all properties served by the City for the purposes of inspection, observation, measurement, sampling and testing in accordance with the provisions of this chapter. (Ord. 1205 § 5, 2020.)

13.20.510 Damage caused by prohibited wastewater discharge.

Any industrial wastewater discharger who discharges or causes the discharge of prohibited wastewaters which cause damage to City facilities, detrimental effects on treatment processes or any other damages resulting in costs to the City shall be liable to the City for all damage occasioned thereby. (Ord. 1205 § 5, 2020.)

13.20.520 Requirements for sewer lateral service providers to submit reports.

A. On and after July 15, 2013, any person or business entity providing sewer lateral service in the City for compensation shall file a written report with the public works department of each qualifying sewer lateral service call it makes in the City. The report shall contain the date of the call, the address where the sewer lateral is located, and a brief description of the service and of the conditions making it a qualifying sewer lateral service call. All reports must be submitted to the City no later than three business days after the service call.

B. The City engineer may adopt a form for use in filing the reports.

C. Upon the receipt of a report of a qualifying sewer lateral service call for an address in the City, the City engineer shall issue a notice of violation to the property address that a sewer lateral inspection is required and depending on the results of the inspection repairs or replacement of the sewer lateral may be required.

D. The City engineer shall monitor whether businesses that provide septic and sewer line cleaning, plumbing and similar services which have been issued a City business license are filing reports as required by this section. (Ord. 1205 § 5, 2020.)

13.20.530 Fees.

When any work, testing or inspection in this chapter does not specifically require an application for permit with a City, county or state agency, the City Council may, by resolution, approve a fee schedule to provide for administration of the inspection program. (Ord. 1205 § 5, 2020.)