(A) In order that the rates and charges may be justly and equitably adjusted to the service rendered to users, the Board shall base its charges not only on the volume, but also on strength and character of the stronger than normal domestic sewage and wastes which it is required to treat and dispose of. The Board shall require the user to determine the strength and content of all sewage discharged either directly or indirectly to the POTW, in that manner, by that method, and at those times as the Board 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 Board at all times.
(B) Additional charges for treating stronger than normal domestic waste are based on the following thresholds and rates:
(1) Total suspended solids (TSS) - shall be surcharged in excess of 250 mg/l at a rate of $0.24/lb.
(2) CBOD - shall be surcharged in excess of 250 mg/l of at a rate of $0.24/lb.
(3) Ammonia - shall be surcharged in excess of 20 mg/l at a rate of $0.69/lb.
(4) COD - shall be surcharged in excess of 500 mg/l at a rate of $0.24/lb.
(5) Phosphorus - shall be surcharged in excess of 10 mg/l at a rate of $1.80/lb.
(C) The determination of suspended solids, five-day biochemical oxygen demand, ammonia, and phosphorus contained in the waste shall be in accordance with the latest copy of Standard Methods for the Elimination of Water, Sewage, and Industrial Wastes, as written by the American Public Health Association, the American Water Works Association, and the Water Environment Federation, and in conformance with Guidelines Establishing Test Procedures for Analysis of Pollutants: 40 CFR 136.
(Ord. 15-2021, passed 11-23-21)