(A) All industrial users of the POTW are subject to industrial waste surcharges on discharges which exceed concentrations of BOD, COD, TSS, and TKN set forth in the schedule of charges and fees. The amount of the surcharges will be based on the volume of flow and the character and concentrations of the constituents of the wastewater.
(B) The volume of flow used in determining the total discharge of wastewater for payment of user charges and surcharges shall be based on the following:
(1) Metered water consumption as shown in the records of meter readings maintained by the city; or
(2) If required by the city or at the individual dischargers option, other flow monitoring devices which measure the actual volume of wastewater discharged to the sewer. Such devices shall be accessible and safely located, and the measuring system shall be installed in accordance with plans approved by the city. The city may require a refrigerated composite sampler, which will collect proportional samples based upon flow readings from this system. The metering system shall be installed and maintained at the users expense according to arrangements that may be made with the city. Equipment malfunctions or failures to properly measure flow shall necessitate flow data based on the water consumption meter;
(3) Where any user procures all or part of his or her water supply from sources other than the city, the user shall install and maintain at his or her own expense a flow-measuring device of a type approved by the city.
(C) The character and concentration of the constituents of the wastewater used in determining surcharges shall be determined by samples collected and analyzed by the city. Samples shall be collected in such a manner as to be representative of the actual discharge and shall be analyzed using procedures set forth in 40 CFR Part 136.
(D) The determination of the character and concentration of the constituents of the wastewater discharge by the POTW Director or his or her duly appointed representatives shall be binding as a basis for charges.
(Ord. 5-03, passed 5-15-03; Am. Ord. 10 ORD 02-08, passed 2-7-08; Am. Ord. 31 ORD 12-12, passed 12-6-12)