ARTICLE 13.03 SEWERS

The city shall collect for sewer service a monthly charge computed according to the following schedules:

Schedule I: Residential, in city limits, application.

The rate provided for in this schedule is applicable to residential service in single dwellings, apartment houses, roominghouses, and mobile homes, including those located in mobile home parks, located inside the corporate limits. Each separate living unit shall be considered a single dwelling. This rate applies only to standard residential fixtures, as hereinafter defined, and fixtures not defined as such are subject to other rates established for their use.

Standard fixtures.

Standard fixtures for the purpose of this rate shall be: commodes, sinks, bathtubs, showers, lavatories, washing machine connections, and disposal units connected to sinks and drains that are enclosed and free from rainwater entry provided such fixtures are installed in accord with the provisions of the existing plumbing and sewer ordinance of the city and amendments thereto.

Rates.

The use of fixtures and connections to the city sewer system shall be determined at the following rates for each residential establishment:

First three thousand (3,000) gallons of water used per month: $14.35 minimum charge.

All over three thousand (3,000) gallons of water used per month: $4.20 per one thousand (1,000) gallons, which is based on a volumetric use rate.

Computation of use.

The following method shall be followed for computing the volumetric use rate for residential customers within the city limits:

The average monthly use shall be computed on an annual basis every March, and shall be based on the water usage for the immediately preceding December, January and February.

The average monthly use computed annually shall be the basis for all charges billed for each of the twelve (12) months immediately following such annual computation.

(iii)

In the event such residential customers do not have a history of water use in the months of December, January and February so as to compute an average monthly use, then charges billed for usage in any of the months in the period March through November, inclusive, shall be based on actual usage per month or five thousand (5,000) gallons per month, whichever is less.

Schedule II: Residential, outside city limits, application.

The rate provided for in this schedule is applicable to residential service in single dwellings, apartment houses, roominghouses, and mobile homes, including those located in mobile home parks, located outside the corporate limits of the city. Each separate unit shall be considered a single dwelling. This rate applies only to standard residential fixtures, as hereinafter defined, and fixtures not defined as such are subject to other rates established for their use.

Standard fixtures.

Rates.

The use of fixtures and connections to the city sewer system shall be determined at the following rates for each residential establishment outside the city limits:

First three thousand (3,000) gallons of water used per month: $28.70 minimum charge.

All over three thousand (3,000) gallons of water used per month: $4.20 per one thousand (1,000) gallons, which is based on a volumetric use rate.

Schedule III: Commercial, in city limits, application.

The rate provided for in this schedule is applicable to all commercial establishments not eligible for service under residential or industrial rates, located inside the corporate limits. Charges for sewer service under this schedule shall be based upon the amount of water consumed and recorded each month by the water meters located on water lines serving the premises. Establishments using more than five hundred thousand gallons (500,000) gallons of water per month for not less than six (6) months out of the preceding calendar year shall be charged upon the applicable industrial rate. Each establishment shall be considered a separate customer.

Fixtures.

The sewer charges are based upon the amount of water supplied by the city water system to all fixtures and connections connected to the sewer system. In the event fixtures or connections attached to the city sewer system are supplied with water from some other source, a charge equal to that imposed by this schedule upon a similar establishment supplied with water by the city water system shall be made and collected.

Rates.

The use of fixtures and connections to the city sewer system by each commercial establishment within the city limits shall be determined at the following rates:

First three thousand (3,000) gallons of water used per month: $15.19 minimum charge.

All over three thousand (3,000) gallons of water used per month, per one thousand (1,000) gallons: $2.46.

Minimum charge.

The monthly charge shall be the amount computed at the rate hereinabove fixed but in no event less than nine dollars ($9.00) per month.

Schedule IV: Commercial, outside city limits, application.

The rate provided in this schedule is applicable to all commercial establishments not eligible for service under residential or industrial rates, located outside the corporate limits. Charges for sewer service under this schedule shall be based upon the amount of water consumed as recorded each month by the water meters located on water lines serving the premises. Establishments using more than five hundred thousand (500,000) gallons of water per month for not less than six (6) months out of the preceding calendar year shall be charged upon the applicable industrial rate. Each establishment shall be considered a separate customer.

Fixtures.

Rates.

The use of fixtures and connections to the city sewer system by each commercial establishment outside the city limits shall be determined at the following rates:

First three thousand (3,000) gallons of water used per month: $30.38 minimum charge.

All over three thousand (3,000) gallons of water used per month, per one thousand (1,000) gallons: $2.46.

Minimum charge.

The monthly charge shall be the amount computed at the rate hereinabove fixed but in no event less than seventeen dollars ($17.00) per month.

Schedule V: Industrial, in city limits, application.

The rate provided for in this schedule is applicable to all industrial establishments located inside the corporate limits eligible under the provisions of this schedule. Each establishment shall be considered a separate customer. Customers eligible for the rates established by this schedule (schedule V) shall be those who shall have used not less than five hundred thousand (500,000) gallons of water per month for each of any six (6) months of the preceding calendar year. Charges for sewer service under this schedule shall be based upon the amount of water consumed as recorded each month by the water meters located on water lines serving the premises. Eligibility for this rate for the present calendar year shall be determined from the records of water consumed by the customer during the immediate preceding calendar year as recorded in the records of the city utilities.

Fixtures.

Rates.

The use of fixtures and connections to the city sewer system by each industrial establishment shall be determined at the following rates:

First ten thousand (10,000) gallons of water used per month: $16.00.

All over ten thousand (10,000) gallons of water used per month, per one thousand (1,000) gallons: $1.00.

Minimum charge.

The monthly charge shall be the amount computed at the rate hereinabove fixed but in no event less than sixteen dollars ($16.00) per month.

Schedule VI: Industrial, outside city limits, application.

The rate provided for in this schedule is applicable to all industrial establishments located outside the corporate limits eligible under the provisions of this schedule. Each establishment shall be considered a separate customer. Customers eligible for the rates established by this schedule (schedule VI) shall be those who shall have used not less than five hundred thousand (500,000) gallons of water per month for each of any six (6) months of the preceding calendar year. Charges for sewer service under this schedule shall be based upon the amount of water consumed as recorded each month by the water meters located on water lines serving the premises. Eligibility for this rate for the present calendar year shall be determined from the records of water consumed by the customer during the immediate preceding calendar year as recorded in the records of the city utilities.

Fixtures.

Rates.

The use of fixtures and connections to the city sewer system by each industrial establishment shall be determined at the following rates:

First ten thousand (10,000) gallons of water used per month: $32.00.

All over ten thousand (10,000) gallons of water used per month, per one thousand (1,000) gallons: $2.00.

Minimum charge.

The monthly charge shall be the amount computed at the rate hereinabove fixed but in no event less than thirty-two dollars ($32.00) per month.

Payment of charges.

The charges for sewer service, computed under the rate schedule applicable, shall be levied against and paid by the person or establishment receiving the service. The charge for sewer service shall be payable monthly on or before the tenth day of the following month. All accounts and charges for sewer service shall be payable at the office of the city utilities.

Records; billing.

The city utilities department and the employees thereof shall keep and maintain all books, records and accounts of each customer receiving sewer service, compute all charges, prepare and render statements of accounts to customers, and collect the established charges. Charges for sewer service shall be billed at the close of each month and shall appear upon the bill for electric and/or water service if the customer received such services.

§ 13.03.002 Outlet charge; tapping of main and installation of service line.

Payment of water and/or electric service charges shall not be accepted unless any charges due for sewer service are paid at the same time. Water, electric, and garbage service shall be discontinued to any customer who has not paid both water service and sewer service charges within the time permitted.

(1987 Code, sec. 23-36; 1987 Code, sec. 23-36; Ordinance adopting Code; Ordinance 20-05, sec. 1, adopted 9/14/20; Ordinance 20-05, sec. 2, adopted 9/14/20; Ordinance 20-05, sec. 3, adopted 9/14/20; Ordinance 21-05 adopted 9/13/2021; Ordinance 22-07 adopted 9/12/2022; Ordinance 23-05 adopted 9/11/2023)

Charges.

The following charges shall be applied when original taps are made to the sewer main:

Customers inside city limits:

4" sewer tap: $500.00.

6" sewer tap: Cost of labor and materials plus 15% of costs.

Customers outside city limits: One and one-half (1-1/2) the charge to customers inside the city limits.

Nothing herein shall be construed to constitute approval by the city council for the utilities department to extend sewer service to any location outside the city limits without specific council authorization therefor as may be required by law.

Procedures.

The following procedures shall be followed and applied when an original tap is made to the sewer main:

The city shall be responsible for locating the sewer main to be tapped.

Only a licensed and bonded master plumber may perform the excavation to the sewer main, make the tap to the sewer main and/or extend the sewer service to the customer, all of which shall be at the customer’s expense.

The city shall be responsible for inspecting the tap and service line and approving it for operation. Such inspection shall be required before the service line may be placed in operation.

The city may assist the master plumber in closing the excavation.

The city shall be responsible for any repaving of city streets required as a result of the extension of service to the customer.

§ 13.03.003 through § 13.03.030. (Reserved)

Upon completion of such extension of service to the customer, the city shall be responsible solely for the maintenance of the sewer main, the maintenance of any service line being the sole responsibility of the customer.

(1987 Code, sec. 23-37; Ordinance 19-01, sec. 5, adopted 1/14/19)

Division 2 Industrial Wastes

§ 13.03.031 Compliance.

Any person seeking approval to discharge industrial wastes into the public sewers within the corporate limits of the city or within its jurisdiction shall be required to comply with the requirements of this division before such approval may be granted.

(1987 Code, sec. 23-96)

§ 13.03.032 Definitions.

For the purpose of interpreting this division, certain words used in this division are defined as follows:

Administrative officers.

Any officer referred to in this division by title, i.e., manager of utilities department, city attorney, city secretary, city engineer, etc., shall be the person so retained in this position by the city, or duly authorized representative.

Analytical terms.

Biochemical oxygen demand or BOD.

The quantity of oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedures in five (5) days at twenty (20) degrees Celsius, expressed in parts per million. Laboratory determinations shall be made in accordance with procedures set forth in Standard Methods.

Dissolved solids.

Those solids contained in the sewage or waste which are dissolved in the carrying liquid, as determined in accordance with procedures set out in Standard Methods.

Parts per million.

A weight-to-weight ratio; the parts per million value multiplied by the factor 8.33 shall be equivalent to the number of pounds per million gallons of wastewater.

pH.

The negative logarithm (base 10) of the hydrogen ion concentration of a solution as determined in accordance with procedures set out in Standard Methods.

Standard Methods.

The examination and analytical procedures set forth in the latest edition of Standard Methods for the Examination of Water and Wastewater as published jointly by the American Public Health Association, the American Water Works Association and the Water Environment Federation.

Properly shredded garbage.

Suspended solids.

Solids that float on the surface of, or are suspended in, water, sewage or other liquids, and which are determined in accordance with procedures set out in Standard Methods.

(7)

Total solids.

All solids, both suspended and dissolved, contained in the water, sewage or other liquid, and which are determined in accordance with procedures set out in Standard Methods.

Approving authority.

The city official designated by the city council, or his duly authorized deputy, agent or representative.

City.

The city, together with all its governing and operating bodies.

Engineer.

The city manager, the city’s consulting engineer, or their duly authorized representatives.

Garbage.

Solid wastes and residue from the preparation, cooking and dispensing of food, and from the handling, storage and sale of food products and produce.

Legal regulatory board.

The state water development board or any other legal regulatory authority.

Natural outlet.

Any outlet into a watercourse, pond, ditch, lake or other body of surface or ground water.

Permittee.

That person applying for a permit to construct a sanitary sewer, or to connect to an existing sanitary sewer.

Person.

Any and all persons, natural or artificial, including any individual, firm, company, industry, municipal or private corporation, association, society, governmental agency or other entity, and agents, servants or employees.

The wastes from the preparation, cooking, and dispensing of food that have been shredded to such a degree that all particles will be carried under flow conditions normally prevailing in public sewers, with no particle greater than one-half inch in any dimension.

Septic waste hauler and/or contractor.

Any person who collects septic waste or wastewater from an individual residential septic tank or system for disposal into the city’s wastewater treatment plant. An approved septic waste hauler or contractor is one who has a current license from the city to deposit such waste in the city’s wastewater treatment plant.

Sewage.

A combination of water-carried wastes from residences, business buildings, institutions and industrial establishments, together with such ground, surface and storm waters as may be present.

Domestic sewage.

Waterborne wastes normally discharged from sanitary conveniences of dwellings, including apartment houses and hotels, office buildings, factories and institutions, free from stormwater, surface water and industrial wastes.

Normal domestic sewage.

Normal domestic sewage for the city, in which the concentration of suspended solids and five-day twenty-degree BOD is established as two hundred fifty (250) parts per million each, by weight.

Industrial wastes.

All waterborne solid, liquid or gaseous wastes resulting from any industrial, manufacturing or food processing operation or process, or from the development of any natural resource, or any mixture of these with water or domestic sewage, as distinct from normal domestic sewage.

Unpolluted water or waste.

Any water or waste containing none of the following: free or emulsified grease or oil; acid or alkali; phenols or other substances imparting taste and/or odor in receiving waters; toxic poisonous substances in suspension, colloidal state or solution; and noxious or odorous gases and containing not more than ten (10) parts per million each of suspended solids and BOD with color not exceeding fifty (50) parts per million.

Sewage treatment plant.

Any arrangement of structures and devices used for treating sewage and wastes.

Sewage works.

All facilities for the collection, pumping, treating and disposing of sewage and wastes.

Sewer.

Building drain.

That part of the lowest horizontal piping of a drainage system which receives the discharge from soil, waste and other drainage pipes inside the walls of the building and conveys to the building sewer beginning three (3) feet outside the inner face of the building wall.

Building sewer.

The extension from the building drain to the sewer or other place of disposal.

Public sewer.

A sewer in which all owners of abutting properties shall have equal rights and that is controlled by public authority.

Sanitary sewer.

A sewer which carries sewage and to which storm, surface and ground waters are not intentionally admitted.

Storm sewer or storm drain.

A sewer which carries storm and surface waters and drainage but excludes sewage and polluted industrial wastes.

§ 13.03.033 Admission into public sewer.

Stormwater runoff.

That portion of the rainfall that is drained into the storm sewers.

Sewer service charge.

The charge made on all users of the public sewerage system whose wastes do not exceed in strength the concentration values established as representative of normal sewage.

Sewerage.

The system of sewers and appurtenances for the collection, transportation and pumping of sewage and industrial wastes.

Slug.

Any discharge of water, sewage or industrial waste which in concentration of any given constituent or in quantity of flow exceeds for any period of duration in excess of fifteen (15) minutes more than five (5) times the average twenty-four-hour concentration of flows during the normal operation.

Surcharge.

The charge in addition to the published sewer service charge; the basis for surcharge on industrial wastes is a capital and operating cost for suspended solids, BOD and chlorine demand exceeding normal sewage.

Watercourse.

A channel in which a flow of water occurs either continuously or intermittently.

(1987 Code, sec. 23-97; Ordinance 05-19, sec. 1, adopted 11/28/05)

Approval required.

Review and acceptance of the approving authority shall be obtained prior to the discharge into the public sewers of any wastes and waters having the following:

A five-day twenty-degree Celsius BOD (biochemical oxygen demand) greater than three hundred (300) parts per million;

Suspended solids content greater than three hundred (300) parts per million;

Chlorine demand greater than five (5) parts per million.

Pretreatment.

Where required, in the opinion of the approving authority, to modify or eliminate wastes that are harmful to the structures, processes or operation of the sewage disposal works, the person shall provide, at his expense, such preliminary treatment or processing facilities as may be determined necessary to render his wastes acceptable for admission to the public sewer.

Submission of information.

Design calculations, plans, specifications and other pertinent information relating to proposed industrial waste pretreatment or processing facilities shall be submitted for approval or disapproval by the approving authority prior to start of their construction, if the effluent from such facilities is to be discharged into the public sewers. The following industrial sewer connection application shall be fully completed and submitted to the approving authority. The permittee shall not connect to the public sewer without prior approval by the approving authority of the permittee’s industrial sewer connection application. It shall be the responsibility of the permittee to file an amendment for approval to the permit thirty (30) days prior to the change of any item of information on the permit. Failure to maintain the permit as an accurate representation of the permittee’s waste discharges to public sewers shall be cause for penalty.

Preapplication conference.

Prior to filing an industrial sewer connection application, the permittee shall consult with the approving authority concerning the types, concentration and volumes of industrial wastes proposed for discharge. Conditional approval as to the general requirements must be obtained from the approving authority prior to preparation of the industrial sewer connection application.

(e)

Industrial sewer connection application.

To the City of La Grange, Texas.

The undersigned being the (permittee) of the property located at ____________ does hereby request a permit to (install, use) an industrial sewer connection serving the (name of company) which company is engaged in _____________ at said location.

Information attached shall include:

A plat of the property showing accurately all sewers and drains (exhibit A).

A complete schedule of all process waters and raw industrial waste produced or expected to be produced before pretreatment (if any) at such property, including a description of the character of each waste, the daily volume and maximum rate of discharge and representative analysis of the raw waste (exhibit B).

Plans and specifications covering all pretreatment facilities for waste treatment proposed to be performed on the waste under this permit with full description (laboratory analysis) of the character of the waste to be discharged to the public sewer (exhibit C).

Plans and specifications of the grease, oil and sand interceptor and control manhole (exhibit D).

Applicant agrees to the following stipulations:
(1)	To operate and maintain any waste pretreatment facilities as may be required as a condition of the acceptance into the public sewer of the industrial wastes involved, in an efficient manner at all times, and at no expense to the city.
(2)	To cooperate with the approving authority and his representatives in their inspecting, sampling and study of the industrial wastes and any facilities providing pretreatment.
(3)	To notify the approving authority immediately in the event of any accident, negligence or other occurrence that occasions discharge to the public sewerage system of any wastes or process waters not covered by this permit.
(4)	To accept and abide by all provisions of this division, and of all pertinent ordinances or regulations that may be adopted in the future.
(5)	To accept and pay when billed the sewer service charge and industrial wastes surcharge which is over and above the published water and sewer rates as set forth in this division.
Date _______________		Signed ____________________ (Permittee)
		____________________ (Address)
$ ____________________ Connection fee paid		Attested ____________________
		Date ____________________
Application Approved and Permit Granted:
Date _______________		Signed ____________________ (Approving Authority)

(1987 Code, sec. 23-98)

§ 13.03.034 Prohibited discharges.

No person shall discharge or cause to be discharged any stormwater, groundwater, roof runoff, subsurface drainage, downspouts, yard drains, yard fountain and ponds or lawn sprays into any sanitary sewer. Stormwater and all other unpolluted drainage shall be discharged to such sewers as are specifically designed as storm sewers or to a natural outlet approved by the approving authority. Unpolluted process water may be discharged upon prior written approval of the approving authority to a storm sewer or natural outlet or into the sanitary sewer system by an indirect connection whereby such discharge is cooled, if required, provided the waste does not contain materials or substances in suspension or solution in violation of the limits prescribed by this division. In cases where, in the opinion of the approving authority, the character of the sewage from any manufacturer or industrial plant building or other premises is such that it will damage the sanitary sewer system or cannot be treated satisfactorily in the sanitary sewer system, the approving authority shall have the right to require such user to dispose of such waste otherwise and prevent it from entering the sanitary sewer system.

No person shall discharge or cause to be discharged either directly or indirectly any of the following described substances, materials, water or waste:

Any liquid having a temperature higher than one hundred fifty (150) degrees Fahrenheit (sixty-five (65) degrees Celsius);

Any water or wastes which contain wax, grease or oil, plastic or other substances that will solidify or become discernibly viscous at temperatures between thirty-two (32) degrees to one hundred fifty (150) degrees Fahrenheit;

Any solids, liquids or gases which by themselves or by interaction with other substances may cause fire or explosion hazards, or in any other way be injurious to persons, property, or the operator of the sewage works;

Any solids, slurries or viscous substances of such character as to be capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works, such as ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, whole blood, paunch manure, hair and fleshings, entrails, lime slurry, lime residues, slops, chemical residues, paint residues, or bulk solids;

Any garbage that has not been properly comminuted or shredded. If properly comminuted or shredded, then it may be accepted under properly established provisions;

Any noxious or malodorous substance, which either singly or by interaction with other substances is capable of causing objectionable odors, or hazard to life; or forms solids or creates any other condition deleterious to structures or treatment processes; or requires unusual provisions, alteration or expense to handle such materials;

(7)

Any waters or wastes having a pH lower than 5.5 or higher than 10.5 or having any corrosive property capable of causing damage or hazards to structures, equipment, or personnel of the sewage works;

(8)

Any wastes or waters containing suspended or dissolved solids of such character and quantity that unusual attention or expense is required to handle such materials at the sewage treatment plants, or in the public sewage works;

(9)

Any waters or wastes containing a toxic or poisonous substance such as plating or heat treating wastes in sufficient quantity to injure or interfere with any sewage treatment process, to constitute a hazard to humans or animals, or to create any hazard in the receiving waters or the sewage treatment plant;

(10)

Any cyanide greater than 1.0 part per million, as CN;

(11)

Any hexavalent chromium greater than 2.0 parts per million;

(12)

Any trivalent chromium greater than 5.0 parts per million;

(13)

Any copper greater than 1.0 part per million;

(14)

Any nickel greater than 1.0 part per million;

(15)

Any cadmium greater than 0.02 part per million;

(16)

Any zinc greater than 1.0 part per million;

(17)

Any phenols greater than 0.005 part per million;

(18)

Any iron greater than 2.0 parts per million;

(19)

Any tin greater than 0.02 part per million;

(20)

Any barium greater than 1.0 part per million;

(21)

Any lead greater than 0.1 part per million;

(22)

Any silver greater than 0.1 part per million;

(23)

Any chlorides greater than 250.0 parts per million;

(24)

Any radioactive material without prior specific approval of the approving authority;

(25)

Any material in excess of the amounts stipulated as permissible by the state water development board (or other legal regulatory authority) in existing orders published by such regulating authority.

If future regulatory orders are published by regulatory authorities, the limitations set therein for the discharge of wastes, either regulatory or prohibitive, shall be binding on all permittees discharging (or to discharge) wastes to the sewer systems of the city.

Except in quantities or concentrations or with provisions as stipulated in this section, it shall be unlawful for any person to discharge waters or wastes to the sanitary sewers containing the following:

Free or emulsified oil and grease exceeding on analysis as average one hundred (100) parts per million (833 pounds per million gallons) of either or both or combinations of free or emulsified oil or grease, if, in the opinion of the approving authority, it appears probable that such wastes:

Can deposit grease or oil in the sewer lines in such a manner as to clog the sewers;

Can overload skimming and grease-handling equipment;

Are not amenable to bacterial action and will therefore pass to the receiving waters without being affected by normal sewage treatment processes; or

(D)

Can have deleterious effects on the treatment process due to the excessive quantities;

Any radioactive wastes without prior specific approval of the approving authority;

Cyanides or cyanogen compounds capable of liberating hydrocyanic gas on acidification in excess of one-half part per million by weight as CN in the wastes from any outlet into the public sewer;

Materials which exert or cause the following:

Unusual concentrations of solids or composition, e.g., in total suspended solids of inert nature, such as fuller’s earth, and/or in total dissolved solids such as sodium chloride or sodium sulfate;

Excessive discoloration;

Unusual BOD or an immediate oxygen demand;

(D)

High hydrogen sulfide content.

§ 13.03.035 Control of admissible wastes.

Unusual flow and concentration shall be pretreated to a concentration that is acceptable to the city, if such wastes can cause damage to collection facilities, impair the processes, incur treatment cost exceeding those of normal sewage, or render the water unfit for stream disposal. Where such wastes are discharged to the sanitary sewers not properly treated or otherwise corrected, the approving authority shall reject the wastes or terminate the service of water and/or sanitary sewage.

(1987 Code, sec. 23-99)

Any person desiring to deposit or discharge any industrial waste into the public sewers of the city or any sewer connected therewith, or who is now so doing, shall make application to the approving authority for a permit therefor upon application forms to be obtained from the city.

Grease, oil and sand interceptors shall be provided for the proper handling of liquid wastes containing grease in excessive amounts, or any flammable wastes, sand and other harmful ingredients; except that such interceptors shall not be required for private living quarters or dwellings. All interceptors shall be of a type and capacity approved by the approving authority and shall be located as to be readily and easily accessible for easy cleaning and inspection. Grease and oil interceptors shall be constructed of impervious materials capable of withstanding abrupt and extreme changes in temperature. They shall be substantially constructed, watertight and equipped with easily removable covers which, when bolted in place, shall be gastight and watertight. Grease, oil and sand interceptors shall be maintained by the permittee, at his expense, in continuously efficient operation at all times.

Any person discharging or desiring to discharge an industrial waste mixture into the public sewers, or any sewer connected therewith, shall provide and maintain in a suitable accessible position on the permittee’s premises, or such premises occupied by him, an inspection chamber or a manhole near the outlet of each sewer, drain, pipe, channel, or connection which communicates with the sewer or sewer works of the city or any sewer connected therewith. Each such manhole or inspection chamber shall be of such design and construction to prevent infiltration by ground and surface waters and be filtered by screens with a maximum opening of one (1) inch, but of sufficient fineness to prevent the entrance of objectionable solids to the sanitary sewer system, and shall be so maintained by the permittee discharging wastes so that any authorized representative or employee of the city may readily and safely measure the volume and obtain samples of the flow at all times. Plans for construction of the control manholes, or inspection chambers, including such flow measuring devices as may be required, shall be included with the industrial sewer connection application.

§ 13.03.036 Protection of sewer system from damage.

Sampling of the effluent of waste discharges may be accomplished manually or by use of mechanical equipment to obtain a composite sample which would be representative of the total effluent. Samples shall be taken at six-month intervals to establish the BOD, suspended solids and chlorine demand of the industrial waste for billing purposes, or at such intervals as may be determined by the approving authority as necessary to maintain a control over the discharges from the permittee. The method used in the examination of all industrial wastes to determine BOD, suspended solids, chlorine demand and prohibited wastes shall be as set forth in Standard Methods for the Examination of Water and Waste Water.

(e)

The utilities department is empowered to collect fees from approved septic waste haulers or contractors who deposit or discharge wastewater into the public wastewater treatment plant or any sewer connected therewith. The rate to be charged by the utilities department to such approved septic waste hauler or contractor shall be a minimum of $0.15 per gallon for the acceptance and treatment of wastes based upon the maximum capacity of the vehicle, transport or tank containing the septic waste at the time of disposal. An approved septic waste hauler or contractor is one who has a current license issued by the utilities department. The utilities department shall charge each approved septic waste hauler or contractor an annual fee of $125.00 for a license for the privilege of disposing septic waste or wastewater into the city’s wastewater treatment plant. The utilities manager is hereby empowered to establish such rules, regulations and procedures as may be necessary or appropriate for permitting this service and for the collection of license fees, rates and charges for same.

(1987 Code, sec. 23-100; Ordinance 19-01, sec. 6, adopted 1/14/19)

No unauthorized person shall maliciously, willfully or negligently break, damage, destroy, uncover, deface or tamper with any structure, appurtenance or equipment which is a part of the sanitary sewer system.

§ 13.03.037 Powers and authority of enforcing agents.

Unless evidenced by written agreement with the user and occupant of the premises, it shall be the duty of the owner of the premises connected to the city’s sanitary sewer system to keep such system in sound condition capable of handling sewage originating on the premises without infiltration of any other water into the sanitary sewer system or the infiltration of sewage from the sanitary sewer system.

(1987 Code, sec. 23-101)

The approving authority, and other duly authorized employees of the city acting as its duly authorized agent and bearing credentials and identification, shall be permitted to gain access to such properties as may be necessary for the purpose of inspection, observation, measurement, sampling, and testing, in accordance with provisions of this division. The approving authority or his representative shall have no authority to inquire into any process beyond that point having direct bearing on the kind and source of discharge to the sewer.

Any person found to be violating any provision of this division shall be served by the city with written notice stating the nature of the violation and providing a thirty-day period for satisfactory correction thereof. Any person who shall continue any violation of his industrial sewer connection application shall be disconnected from the sanitary sewer and/or water service. Such disconnection and reconnection shall be at the total expense of the industry or sewer user.

§ 13.03.038 Industrial waste surcharge.

Where wastes, acids, chemicals or other deleterious substances are released to the sewer causing rapid deterioration of these structures or interfering with the proper treatment of sewage, the approving authority is authorized to immediately terminate services by such measures as are necessary to protect the facilities.

(1987 Code, sec. 23-102)

Persons discharging industrial wastes which exhibit none of the characteristics of prohibited wastes as defined in this division, other than excessive BOD or suspended solids, but having a concentration for a duration of fifteen (15) minutes greater than four (4) times that of normal sewage as measured by suspended solids and BOD and/or an average concentration during a normal working day of the permittee’s industry of suspended solids or BOD content in excess of normal sewage as defined in this division as normal domestic sewage, shall be required to pretreat the industrial wastes to meet the requirements of normal sewage; however, such wastes may be accepted for treatment if the following requirements are met:

The wastes will not cause damage to the collection and treatment facilities.

The waste will not impair the treatment process.

The donor of the waste enters into an industrial sewer connection application and agrees to pay the sewer service charge and industrial waste surcharge.

The donor of the wastes shall enter into an industrial sewer connection application with the city providing for a surcharge over and above published water and sewer rates. The basis for surcharge on industrial wastes is a capital and operating cost of twelve cents ($0.12) per part per million gallons for the BOD and a capital and operating cost of thirty-six cents ($0.36) per part per million gallons for the suspended solids exceeding normal sewage. The cost of the chlorination is based on the city’s contract cost of chlorine per pound per million gallons for each part exceeding five (5) parts per million of normal sewage. These rates shall continue until changed by action of the city council. The surcharge shall be calculated for billing purposes with the following formula:

SC = V (0.12(BOD - 250) + 0.36(SS1 - 250) + 8.33Pc (C - 5))
Where:
V	=	Volume in million gallons.
BOD	=	5-day 20° biochemical oxygen demand of industrial waste (ppm).
SS₁	=	Suspended solids of industrial waste (ppm).
P_c	=	City’s contract price of chlorine per pound.
C	=	Chlorine demand of the industrial waste (ppm).

Any person who refuses to comply with or who resists or willfully discharges wastes prohibited from discharging into public sewers, or who refuses to comply with the provisions of this section, shall be served by the approving authority with a written notice stating the nature of the violation and providing a reasonable time limit for satisfactory correction thereof. Any person who shall continue any violation beyond the time limit shall be guilty of violation of his industrial sewer connection application and shall be summarily disconnected from the sanitary and/or water service, such disconnection and reconnection, if any, to be of total expense to the customer. Where acids or chemicals damaging to sewer lines or treatment facilities or processes are released to the sewer and cause rapid deterioration of these structures or processes, the approving authority is authorized to immediately terminate service by such measures as are necessary to protect the facilities.