Construction of Additions and Improvements to the Sewage Works Bonds

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(b) Normal sewage domestic waste strength should not exceed ammonia-nitrogen in excess of 25 milligrams per liter of fluid, suspended solids in excess of 250 milligrams per liter of fluid, biochemical oxygen demand in excess of 250 milligrams per liter of fluid, or phosphorus in excess of 10 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 Upon Suspended Solids. There shall be an additional charge of 7.5 cents per pound of suspended solids for suspended solids received in excess of 250 milligrams per liter of fluid. 2 . Rate Surcharge Based Upon BOD. There shall be an additional charge of 10 cents per pound of biochemical oxygen demand for BOD received in excess of 250 milligrams per liter of fluid. 3 . Rate Surcharge Based Upon Ammonia-Nitrogen. There shall be an additional charge of 52 cents per pound of ammonia-nitrogen received in excess of 25 milligrams per liter of fluid. 4. Rate Surcharge Based Upon Phosphorus. There shall be an additional charge of 88.7 cents per pound of phosphorus received in excess of 10 milligrams per liter of fluid. (c) The determination of Suspended Solids, Biochemical Oxygen Demand, Ammonia-Nitrogen, Phosphorus, Ammonia and COD contained in the waste shall be in accordance with the latest copy of "Standard Methods for the Examination of Water and Wastewater", as written by the American Public Health Association, the American Water Works Association and the Water Pollution Control Federation, and in accordance with "Guidelines Establishing Test Procedures for Analysis of Pollutants", 40 C.F.R. Part 136. (d) If the City and the user can agree upon the relation- ship between BOD and COD, then COD may be used for calculating the BOD surcharge. Section 24. Without notice to or consent of the owners of the bonds herein authorized, the City may, from time to time and at any time , adopt such ordinance supplemental hereto (which supplemental ordinance shall thereafter form a part hereof) : (a) To cure any ambiguity or formal defect or omission in this Ordinance or in any supplemental ordinance or to make any other change authorized herein; (b) To grant to or confer upon the owners of the bonds herein authorized any additional benefits, rights, remedies, powers, authority or security that may lawfully be granted to or conferred upon the owners of the bonds herein authorized or to make any change which, in the judgment of the City, is not to the prejudice of the owners of the bonds herein authorized; -31-