(A) The city or its City Engineer shall determine each user’s or class of user’s average daily volume of wastewater. The user’s volume of wastewater shall then be divided by the total volume of wastewater to determine each user’s volume contribution percentage. The amount used as the total average daily volume of wastewater shall exclude infiltration and inflow.
(B) The city or its City Engineer shall determine each user’s or class of user’s average daily poundage of BOD. The user’s average BOD shall be divided by the total BOD of the system to determine each user’s BOD contribution percentage.
(C) The city or its City Engineer shall determine each user’s or class of user’s average daily poundage of SS. The user’s average SS shall be divided by the total SS of the system to determine each user’s SS contribution percentage.
(D) Each user’s or class of user’s volume contribution percentage, BOD contribution percentage, and SS contribution percentage shall be multiplied by the annual operation and maintenance costs for the complete wastewater facility’s total volume flow, BOD, and SS respectively.
(Ord. 213, passed 4-7-1987)