§ 50.205 WASTEWATER TREATMENT SERVICE SURCHARGE.
   (A)   Every person whose premises are served by a sewer connection and which discharges sanitary sewage, industrial wastes, water, or other liquid, other than "normal strength sewage," either directly or indirectly into the wastewater treatment system under the management of the Sanitation District No. 1 shall be subject to a wastewater treatment system surcharge in addition to the wastewater treatment system service charge.
   (B)   The surcharge is to be determined on the basis of any combination or all of three constituents of the wastewater:
      (1)   Total Suspended Solids (as defined in § 50.001).
      (2)   B.O.D. (as defined in § 50.001).
      (3)   Kjeldahl Nitrogen (as defined in § 50.001).
   (C)   When the concentrations of any one, any combination, or all of these three constituents exceed the values for "Normal Strength Sewage" as defined in § 50.001, the excess concentrations shall be subject to charges at a rate calculated from the following formula:
R = A(SS-300) + B(BOD-240) = C(TKN-30)
1,000,000
Wherein
   R =   Surcharge rate in dollars per 100 cubic feet of wastewater flow.
   SS =   Suspended Solids (see § 50.001)
   BOD = Biochemical Oxygen Demand (see § 50.001)
   TKN =   Total Kjeldahl Nitrogen (see § 50.001)
   300 =    Maximum Suspended Solids in normal strength sewage.
   240 =    Maximum BOD in normal strength sewage.
    30 =   Maximum Kjeldahl Nitrogen in normal strength sewage.
A, B, and C are numerical factors related to unit costs of providing primary and secondary treatment for the indicated pollutants. The values shall be:
   A = (Values to be furnished
   B = upon request)
   C =
(Ord. O-38-83, passed 12-20-83)