(A) The surcharge shall be determined as follows:
The excess pounds of B.O.D. or C.O.D. (whichever results in the higher charge), suspended solids, phosphorus and ammonia will each be computed by first multiplying the user's billing sewage volume measured in units of 100 cubic feet for the current billing period by the factor 0.0062321 and then multiplying this product by the difference between (a) the concentrations measured in milligrams per liter of the B.O.D. (or C.O.D.), suspended solids, phosphorus and ammonia respectively in the user's sewage and (b) the allowed concentrations set out in § 50.60. The surcharge for each constituent will then be determined by multiplying the excess pounds of each constituent by the appropriate rate of surcharge which are as follows:
Cents Per Pound
Suspended Solids - (SS) 4.17
Biochemical Oxygen Demand - (B.O.D.) 4.63
Phosphorus - (P) 37.61
Ammonia - (NH3) 11.41
(B) In the event C.O.D. measurement is used, as hereinbefore provided, 50% of the excess pounds measured will be used to compute the equivalent B.O.D. charge.
(Ord. 88-008, passed 10-4-88)