(A) In order that the rates and charges may be justly and equitably adjusted to the service rendered to users, the city shall base its charges not only on the volume but also on strength and character of the stronger-than-normal domestic sewage and shall require the user to determine the strength and content of all sewage and wastes discharged, either directly or indirectly, into the sanitary sewage system in such manner and by such method as the city may deem practicable, in light of the conditions and attending circumstances of the case, in order to determine the proper charge. The user shall furnish a central sampling point available to the city at all times.
(B) Normal sewage domestic waste strength should not exceed a biochemical oxygen demand of 200 milligrams per liter of fluid or suspended solids in excess of 240 milligrams per liter of fluid. Additional charges for treatment stronger-than-normal domestic waste shall be made on the following basis.
(1) Rate surcharge based upon suspended solids. There shall be an additional charge per pound of suspended solids based on current state-approved amounts and/or as set by City Council from time to time for suspended solids received in excess of 240 milligrams per liter of fluid.
(2) Rate surcharge based upon BOD. There shall be an additional charge per pound of biochemical oxygen demand based on current state-approved amounts and/or as set by City Council from time to time for BOD received in excess of 200 milligrams per liter of fluid.
(C) The determination of suspended solids and five-day biochemical oxygen demand contained in the waste shall be in accordance with the latest copy of Standard Methods for the Examination of Water, Sewage, and Industrial Wastes, as written by the American Public Health Association, the American Water Works Association, and the Water Pollution Control Federation, and in conformance with Guidelines Establishing Test Procedures for Analysis of Pollutants, 40 C.F.R. part 136, published in the Federal Register on October 16, 1973.
(Ord. 1524, passed 3-3-2008)