(A) In order that the rates and charges may be justly and equitably adjusted to the service rendered to users, the town shall base its charges not only on the volume, but also on strength and character of the stronger-than-normal domestic sewage and wastes for which it is required to treat and dispose. The town shall require the user, at the user’s expense, to determine the strength and content of all sewage and wastes discharged, either directly or indirectly, into the sanitary sewage system, in such manner, by such method and at such times as the town may deem practicable in light of the conditions and attending circumstances of the case, in order to determine the proper charge.
(B) The user shall furnish a central sampling point available to the town at all times.
(1) Normal domestic sewage waste strength should not have: biochemical oxygen demand in excess of 240 milligrams per liter of fluid; suspended solids in excess of 240 milligrams per liter of fluid; ammonia in excess of 30 milligrams per liter of fluid; phosphorus in excess of seven milligrams per liter of fluid; and fats, wax, grease or oils, collectively, whether emulsified or not, in excess of 100 milligrams per liter of fluid. Additional charges for treating stronger-than-normal domestic sewage shall be made on the following basis.
(a) Rate surcharge based upon suspended solids. There shall be an additional charge of $0.72 per pound of suspended solids for suspended solids received in excess of 240 milligrams per liter of fluid.
(b) Rate surcharge based upon BOD. There shall be an additional charge of $0.72 per pound of biochemical oxygen demand for BOD received in excess of 240 milligrams per liter of fluid.
(c) Rate surcharge based upon ammonia. There shall be an additional charge of $0.87 per pound of ammonia for ammonia received in excess of 30 milligrams per liter of fluid.
(d) Rate surcharge based upon phosphorus. There shall be an additional charge of $2.02 per pound of phosphorus received in excess of seven milligrams per liter of fluid.
(e) Rate surcharge based upon oils and grease. There shall be an additional charge of $0.39 per pound of fats, wax, grease or oils, collectively, whether emulsified or not, received in excess of 100 milligrams per liter of fluid.
(2) The determination of suspended solids, biochemical oxygen demand, ammonia, phosphorus and fats, wax, grease or oils, whether emulsified or not, 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 Waterworks Association, and the Water Pollution Control Federation, and in accordance with Guidelines Establishing Test Procedures for the Analysis of Pollutants, 40 C.F.R. part 136, as hereinafter amended, supplemented or replaced.
(Ord. 2019-06, passed 8-28-2019)