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<br />REVISED DRAFT <br /> <br />c. <br /> <br />Ammonia (NH3) <br /> <br />Costs of operating and maintaining the treatment plant, therefore, must be allocated and <br /> <br />functionalized by these parameters, BOD, TSS and NH3, so that revenues may be collected from <br /> <br />the customer on the basis of not only quantity of wastewater, but also quality of the wastewater. <br /> <br />Lift Station <br /> <br />Lift stations are Ui~ed to elevate waste along the wastewater collection system or into to the <br /> <br />treatment plant. <br /> <br />Since the costs associated with lift stations depend on the quantity of <br /> <br />wastewater and not the quality of wastewater, lift station costs were functionalized to flow. <br /> <br />Employing the appropriate factors, the test year wastewater revenue requirement has been <br /> <br />allocated to the functions of Flow, BOD, TSS, Ammonia, and Customer Costs. The results of <br /> <br />this allocation are shown on Table C-5 in Appendix C and are summarized as follows: <br /> <br />Customer Costs <br /> <br />$2,455,548 <br />1,058,362 <br />580,098 <br />44,736 <br />234,047 <br /> <br />Flow <br /> <br />BOD <br /> <br />TSS <br /> <br />Ammonia <br /> <br />Total <br /> <br />$4,372,792 <br /> <br />City of Poris. re.ms <br />Water and Wastewater Cost ofSe",;ce Stlldy <br />March 2003 <br /> <br />27 <br />