(a) Where the character of sewage from any manufacturing or industrial plant, building or premises is such that it imposes a burden upon the sewage system in addition to the burden imposed by the average sewage entering the sewage system, such additional charge shall be made therefor as Council, upon recommendation of the Sanitary Board, shall deem to be fair and equitable to meet the additional costs of collection, treatment and disposal of such sewage. The Board may, if it deems the same advisable, compel the owner, tenant or occupant of such manufacturing or industrial plant, building or premises to treat such sewage in such manner as shall be specified by the Board before discharging such sewage into the sewage system.
(1978 Code Sec. 23-12.)
(b) The charge for the treatment of industrial waste will be calculated on the basis of the following formula:
Ci = VoVi + BoBi + SoSi
Ci = charge to industrial users per year.
Vo = average unit cost of transport and treatment changeable to volume, in dollars per gallon.
Vi = volume of waste water from industrial users, in gallons per year.
Bo = average unit cost of treatment, chargeable to Biochemical oxygen demand (BOD) in dollars per pound.
Bi = weight of BOD from industrial users, in pounds per year.
So = average unit cost of treatment (including sludge treatment) changeable to total solids, in dollars per pound.
Si = weight of total solids from industrial users, in pounds per year.
(c) When an industrial user is to be served, a preliminary study of its waste and the cost of transport and treatment thereof, will be made. Waste containing materials which, in the judgment of the Sanitary Board should not be introduced into the sewer system need not be handled by it. The results of this preliminary study will be used to determine the feasibility of the proposed sewer service and the charge therefore, based upon the formula set out above.
(d) Thereafter, industrial sewage will be monitored on a regular basis and at the conclusion of each fiscal year, based on the investigation aforesaid and audit of Sanitary Board records, new cost figures will be calculated for use in the above formula. The cost of establishing the monitoring facilities shall be paid by the industrial user. Based on these audited figures, additional billings covering the past fiscal year will be made for payment by each industrial user, or refund given by the Sanitary Board, as the case may be. Such audited figures will then be used for preliminary billing for the next fiscal year, at the end of which an adjustment will be made as aforesaid. (Ord. 511. Passed 8-15-88.)