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HomeMy WebLinkAboutOrdinance No. 664ORDINANCE NO. 664 AN ORDINANCE ESTABLISHZNG TIlE PROCEDURE F[)R DETERMINING EQUITABLE SEI{VICE CHARGES TO BE LEVIED ON ALC USERS WHICH DkSCHARGE WASTE- WATER TO THE WASTEWATER SY~iTEM OPERATED ~Y THE CITY OF LAUREL, MONTANA, AND PROVIDING CE};TAiN PROHIBITIONS. BE IT ORDAINED BY THE CITY (.O[NCI1.~ I OF THE CITY £)F LAUREL, MONTANA: Section 1. Purpose. The purpose of this ordinance shall be to generate sufficient revenue to pay all costs for the operation and maintenance of the complete wastewater system. The costs shall be distributed to all users of the wastewater system in proportion to each user's cor]tributio~ to the total loading of the treatment works. Factors such as strength (BOD and SS), volume, and delivery flow rate characteristics shall be considered and included as the basis for the user's contribution to ensure a proportional distribution of operation and maintenance costs to each use (or user class). Section 2. Determinin~ the total annual cost of operation and maintenance. The City of Laurel, or its City Engineer, shall determine the total annual costs of operation and maintenance of the wastewater system which are necessary to maintain the capacity and performance, during the service life of the treat- ment works, for which such works were designed and constructed. The total annual cost of operation and maintenance shall in- clude but need not be limited to~ labor, repairs, e~uipment replacement, maintenance, necessary modifications, power, sampling, laboratory tests, and a reasonable contingency fund. Section 3. Determinin~ each user's wastewater contribu- tion percentage. The City of Laurel, or its City Engineer, shall determine each user's average daily volume of wastewater, which has been discharged to the wastewater system, which shall then be divided by the average daily volume of ali wastewater discharged to the wastewater system, to determine each user's Volume Contribution Percentage. The amount used as the total average daily volume of wastewater shall exclude infiltration -1- and inflow. The City determine e:~h user's Cent iglr'ade Biochemical char,[~ed ~.~ thc wastewater system whJ~:h shhll th~ll be divided Dy the average daily poundage of a] [ 5-day BOD dJ:;char1~ed to the wastewatep system t,o dete~mihe chch user's B()D Contribu- tion Pemcunta~e. Th~ City of Laurel, or its CiB? Entzi. i~eer~ zh;]]l dc. termine each user's average Suspended So]ids (SS) pounda[~¢~ which has beem discharged to the wastewatep system which shall then be dlvided by the average daily poundage of all Suspended Solids discharged to ~he wastewateP system, to detePmim~ [he user's Suspesded Solids Contribution Percentage. Each uL:~,P's Velume Contribution Percentage, BOD Contribution Pepcent-~,:~3 and Suspended Solids Contribution Percentage shall b~ multiplied Dy the annual operation and maintenance costs fop wastewater LreaLment oF the total volume flow, of the tot~]] ~;-day 20 degree centigrade BOD and of the Suspended Solids, respectively. Section ~. Determining a surcharge system for, users with excess BOD and SS. The City of Laurel, or its City Engineer, will determine the average suspended solids (SS) and bio- chemical oxygen demand (BOD) daily loadings for the average residential user. The City of Laurel, or its City Engineer, will assess a surcharge rate for ali non-residentiql users discharging wastes with BOD and SS strengths greater than the average residential user. Such users will be assessed a sur- charge sufficient to cover the costs of treating such users' above normal strength wastes. Normal strength wastes are considered to be 200 p.p.m. BOD and 250 p.p.m. SS. The sur- charge rate structure for such above normal strength waste dischargers is attached. (Appendix A) Section 5. Determining each user's~astewat?r service charge. Each non-residential user's wastewater treatment. cost contributions as determined in Sections 3 and 4 shall be added Logether to determine such users' annual wastewater service charge. Residential users may be considered to be -2- one class of user, and an equJt:nb]e service ctlar'!? may be determined fop eh, h user ba2ed upon an estimate et' the tobal wnstewat, er contribution of this cln:¢s of user. Tho body may c~nssify industrial, comm(,rc~n] , and ~lher res~dentiat establishments as a re~id~ntia] uc~er, provided that the wastes from these establishments are equivalent to the wastes from the average residential user wltb respect to ~olume, suspended solids, and BOD. Each user's wnstewater treatment cost contribution will be assessed ~n with the attached rate schedule. Section 6. Payment of the char6e and penalties. The City ment to the user for the user's user's wastowater service shall submit an annual state- annual wastewater service charEe or one-twelfth of the usep's annual wastewater service charge may be included with the monthly water and/or waste- water utility billing. The City shall add a penalty of--O-- percent per month if the payment is not received by the City within 15 days. Should any user fail to pay the user waste- water service charge and penalty within three months of the due date, the City may stop the wastewater service to the property. Section 7. Review of each user's wastewater service charge. The City shall review the total annual cost of operation and maintenance as well as each user's Wastewater Contribution Percentage not less often than every two years and will revise the system as necessary to assure equity of the service charge system established herein and to assure that sufficient funds are obtained to adequately operate and maintain the wastewater treatment works. If a significant user, such as an industry, has completed in-plant modifications which would change that user's Wastewater Contribution Percentage, the user can present at a regularly scheduled meeting of the governing body, s,ch factual information and the City shall then determine if the user's Wastewater Contribution The City shall notify the user possible. Section 8. Notification. Percentage is to be changed. of its findings as soon as Each user will be notified, at least annually, in conjunction with a regular bill, of the rate and that portion of the user charges which are attributable to wastewater treatment services. Section 9- Wastes prohJbit,,d ~'rom bein~._d_i_!?'l~!!!?]~..d t_o._t~,e was~ewater treatment system. ~he qi~c~ar~e oi' any taining toxic or poisonous solids, liquids, or t~ases ~. suf- ficient quautity, either singly, or by interact~m with oth~.r wastes, to contaminate the sludge of any municipa_ or to 1n jure or interfere with any sewage tr'eatmc, nt ;rocess, constiLute a hazard ~o humans or animals, creat,~ public nu~- sanc"&, or create any hazard in or have an adver~;e eff{-ct on the waters receiving any discharge from the treatment works is hereby prohibited. (Article No.l~,O~ of the City's "Regulatio~ of Sewer Use" Ordinance contains additional peq~irements cnverinE the use of the City's public sewers.] Section 10. Prohibition of clear water cotu, t:tio.s. No person shall make connection of roof downspouns, ~}xt. erior foun- dation drains, areaway drains, ur other source, s oi' ~url'ac~' run- off or groundwater to a Dui]ding sewer or Dui [di[~t~ drain which in Lurn is connected directly or indirectly ~.o n sewer. Section 11. Proper design and. construction of new sewers and connections. The size, slope, alignment, materials of con- struction of all sanitary sewers and sewer connec~ ions, and the methods to be used in excavating, placing of the pipe, jointing, testing, and backfilling the trench, shall all con- form to the requirements of the building and plumbing code or other applicable rules and regulations of the City of Laurel and the State of Montana. (Article NO.l~..o~of the City's "Regulations of Sewer Use" Ordinance contains additional requirements covering the proper design and construction of the City's sanitary sewers, tuilding sewers, and connections.] This ordinance ~hall be ~n full force and effect 30 days after its first reading. PASSED and APPROVED this 5th clay of June, 1979. .tfarry DJ Herman, Mayor sanJ r. ary A['PgNDIX A N~n~lnal Stren~:l h The City of Laurel; or its Erl,,qi,~eer, will d, ~r,lin.. the average tot. a] suspended solids {SS) al~d 5-day oxygen demand (BOD) d~i]y ]oadin~s for the averap¥} resJd(n~tla] user o~']n ]ieu of such a det, ermJr~ation wil. 1 conz.:Jd(n~ the average residential strength wastes ~o be 200 ms/1 250 mg/1 SS. The City of Laurel, or its Engineer, wi.l] assess a surcharge rate for all non-residential usors di n- charging wastes with BOD and SS stren~qths greater than the average residential user. The surchnr%e w~]l b~ auFl'J(:ient to cover the costs of tr(~ating such u~]ers' above strength wastes. Such users will pay an additional service charge of 3 cents per 100 cubic feet of sewage for 25 mg/1 over 200 rog/1 of BOD and 1.6 cents per ]00 cubic feet of sewage for each 25 mg/1 over 250 mg/1 SS.