(A) In order that the rates and charges may be justly and equitably adjusted to the service rendered to industrial users, the city shall base its charges not only on the volume but also on the strength and character of stronger-than-normal domestic sewage and wastes which it is required to treat and dispose of. The city shall require the industrial 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. In all cases, the cost of measuring and monitoring will be borne by the industrial user. The industrial user shall furnish a central sampling point available to the city at all times.
(B) Normal domestic sewage waste strength should not exceed a biochemical oxygen demand of 250 milligrams per liter of fluid, or total suspended solids in excess of 250 milligrams per liter of fluid. Additional charges for treating stronger-than-normal domestic waste shall be made on the following basis:
(1) Rate surcharge based on total suspended solids (TSS). There shall be an additional charge per pound of total suspended solids (TSS) received in excess of 250 milligrams per liter of fluid as set forth in division (B)(4) of this section.
(2) Rate surcharge based on B.O.D. There shall be an additional charge per pound of biochemical oxygen demand for B.O.D. received in excess of 250 milligrams per liter of fluid as set forth in division (B)(5) of this section.
(3)
There shall be an additional charge per pound of nitrogen, ammonia received in excess of 25 milligrams per liter (25mg/l) as set forth in division (B)(5) of this section.
(4) Rate surcharge based on Phosphorus. There shall be an additional charge per pound of Phosphorus received in excess of 1 milligram per liter of fluid as set forth in division (B)(5) of this section.
(5) Excessive strength surcharges:
Effective Date | Additional Charge per Pound for BODS, TSS, Nitrogen Ammonia |
First full billing cycle after July 1, 2023 | $0.57 |
Effective Date | Additional Charge per Pound for Phosphorus |
First full billing cycle after July 1, 2023 | $1.03 |
(C) The determination of total suspended solids and five-day B.O.D. 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.
(1980 Code, § 51.23) (Ord. 479.5, passed 10-8-1963; Am. Ord. 681, passed 5-10-1977; Am. Ord. 986, passed 3-24-1987; Am. Ord. 1989-5, passed 1-24-1989; Am. Ord. 1996-10, passed 3-26-1996; Am. Ord. 2005-2, passed 2-22-2005; Am. Ord. 2006-28, passed 10-24-2006; Am. Ord. 2009-25, passed 12-9-2009; Am. Ord. 2010-37, passed 12-28-2010; Am. Ord. 2014-22, passed 1-13-2015; Am. Ord. 2020-34, passed 11-24-2020; Am. Ord. 2023-7, passed 6-13-2023)