Surcharge Formula to be Applied in the Case of Users Producing Unusual Waste. The charge for the treatment of unusual waste will be calculated on the basis of the following formula:
Ci = VoVi + BoBi + SoSi
Ci =charge to unusual users per year
Vo =average unit cost of transport and treatment chargeable to volume, in dollars per gallon
Vi =volume of wastewater from unusual users, in gallon per year
Bo =average unit cost of treatment, chargeable to Biochemical Oxygen Demand (BOD) in dollars per pound
Bi =weight of BOD from unusual users, in pounds per year
So =average unit cost of treatment (including sludge treatment) chargeable to total solids in dollars per pound
Si =weight of total solids from unusual users in pounds per year
When an unusual user is to be served, a preliminary study of its wastes, and the cost of transport and treatment thereof, will be made. Waste containing materials which, in judgment of the City of Keyser 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 thereof, based upon the formula set out above.
Thereafter, unusual sewage will be monitored on a regular basis and at the conclusion of each fiscal year, based on the investigation and audit of the City of Keyser 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 unusual user. Based on these audited figures, additional billings covering the past fiscal year will be made for payment by each unusual user, or refund given by the City of Keyser Sanitary Board, as the case may be. Such audited figures will then be used for the preliminary billing for the next fiscal year, at the end of which an adjustment will be made as aforesaid. (Issued 12-14-16)