§ 52.057 INDUSTRIAL WASTES; SPECIAL AGREEMENTS.

   No statement contained in this subchapter shall be construed as preventing any special agreement or arrangement between the city and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the city for treatment, subject to payment therefor, by the industrial concern.

(1994 Code, § 52.052) (Ord. 262, passed 3-8-1976)

§ 52.058 BASIS OF CHARGES.

   In order that the rates and charges may be equitably adjusted to the service rendered, the city shall have the right to base its charges not only on volume, but also on the strength and character of the sewerage and wastes which it is required to treat. The city shall have the right to measure and determine the strength and content of all sewerage and wastes discharged, either directly or indirectly, into the city’s sanitary sewerage system, in such manner and by such method as it may deem practicable in the light of the constructions and attending circumstances of the case, in order to determine the proper charge.

(1994 Code, § 52.053) (Ord. 262, passed 3-8-1976)

§ 52.059 RATE AND RATE SURCHARGE.

   (A)   Each user of the sewerage service system shall be charged for the use of the system and for the services supplied thereby, a charge of $0.67 per 1,000 gallons of water consumed as shown by the water meter or meters of the user, plus an additional fixed charge of $0.21 per each user per month.

   (B)   Basic formula for establishing a rate for a surcharge above normal domestic sewage:

      (1)   (a)   Each sewer user shall pay a rate surcharge based upon the excess suspended solids (SS) and biochemical oxygen demand (BOD) express in milligrams per liter (mg/l) for each 1,000 gallons of sewerage discharge, which surcharge shall be based upon the following formula:

      BOD — 260 mg/l

      SS — 275 mg/l

         (b)   These calculations are based on the principal that 25% of the cost of operating is attributable to the removal of BOD and 50% to the removal of SS; and 25% to flow.

   Bc      =   Surcharge on cost per pound of BOD in excess of 260 mg/l.

   Sc      =   Surcharge on cost per pound of SS in excess of 250.0 mg/l.

   O&M   =   Operational and maintenance cost of sewage treatment plant.

   Design average daily flow =   650,000 GPD - 0.650 MGD.

   Bc      =   (O&M) 25% =

            BOD

   Bc      =   $0.053/lb.

   Bc      =   $0.053/lb.

   O&M   =   $83,947.84

   BOD   =   200 mg/l = normal domestic sewage

   Sc      =   (O&M) 50%=

            SS

   Sc      =   $0.085/lb.

   Sc      =   $0.085/lb.

      (2)   To determine the strength of the sewerage and wastes, samplings and analysis may be made when deemed desirable by the city. After charges have been established, their of composite samples of the sewerage and wastes certified by a registered engineer or a qualified graduate chemist, may be submitted in support of the request. The city may then adjust the charges to the ordinance rates required by the analysis or may recheck the findings by additional samplings and analysis. Requests for rate adjustments may be submitted no more often than once every 12 months.

(1994 Code, § 52.054) (Ord. 262, passed 3-8-1976; Ord. 266, passed 4-27-1976; Ord. 269, passed 10-12-1976)

SEWERAGE TREATMENT STANDARDS

§ 52.070 PRETREATMENT OF SEWERAGE.

   (A)   No user shall deposit into the sanitary sewer system of the city, any material which will clog or substantially impede the flow in sanitary sewer, or impede the operations of the sewerage treatment plant. The user shall be subject to the enforcement by the city of all existing city sewer ordinances in effect, at all times. The user shall further provide, install and maintain screening facilities if required by the city and approved by the city’s Engineer for the removal of solids from its wastes so that the materials going into the sanitary sewer are maintained at a minimum size level to prevent undue problems in the sewerage treatment plant of the city. This screening shall be required upon finding of the need for screening by the city. The user shall install the screens, at its own cost, upon receipt of written notice by the city to the user.

   (B)   Whenever the waste from any user is found to interfere with the aerobic processes of the sewerage treatment plant of the city, written notice shall be given by the city to the user, and the user shall be required to construct a waste treatment system and to pretreat all waste before it is discharged into the city sanitary sewer system. Pretreatment shall be sufficient to reduce the strength or characteristic of the wastes to such a degree that it will not interfere with the aerobic processes of the sewerage treatment plant of the city. The notice shall be served upon the user and shall set a date and time for compliance with this section.

   (C)   It shall be a prima facie case that a waste interference with the aerobic processes of the sewerage treatment plant exists if the waste contains acidity below pH 5.5; or the waste contains alkalinity of above pH 9.5; or any grab-sample taken at any time of any day has materials or constituents immediately noticeable that are detrimental to the aerobic processes existing in the sewerage treatment plant as determined by the city’s Engineer.

   (D)   (1)   Plans, specifications and design data for the pretreatment facilities shall be submitted to and approved by the city’s Engineer and by the state’s Environmental Protection Agency before any construction work on the pretreatment system is begun.

      (2)   Construction, maintenance and operation of said pretreatment facilities shall be the sole responsibility of the user, and shall be maintained continuously in satisfactory and effective operating condition by the user at its expense.

   (E)   The pretreatment standards as published in the Federal Register on 11-8-1973 and all amendments thereto are incorporated and by reference made a part of this subchapter.

(1994 Code, § 52.065) (Ord. 262, passed 3-8-1976) Penalty, see § 52.999

§ 52.071 NEW SANITARY SEWERAGE SYSTEM CONSTRUCTION.

   Any new sewer construction or sanitary sewerage system construction tributary to and with final discharge into the sewerage treatment plant shall be limited solely to sanitary sewers constructed under and approved by the terms and conditions of this subchapter.

(1994 Code, § 52.066) (Ord. 262, passed 3-8-1976)

§ 52.072 USER CHARGE REVIEWED ANNUALLY.

   The user charges provided herein shall be reviewed annually and revised periodically to reflect actual treatment works operation and maintenance costs; and to assure that the user charge system will generate sufficient revenue to offset the costs of all treatment works operation and maintenance.

(1994 Code, § 52.067) (Ord. 262, passed 3-8-1976)