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<br />
<br /> 3-1
<br />DRAFT Use of contents on this sheet is subject to the limitations specified at the end of this document.
<br />Section 3
<br />Wastewater Capacity Unit Costs and
<br />Capacity Charges
<br />Capacity charges are developed based on unit costs for flow, BOD and SS. The unit costs for each
<br />component are the value of the system allocated to each component divided by the capacity in the
<br />system for each component.
<br />3.1 Development of Unit Costs for Flow, BOD and SS
<br />The unit costs for each capacity charge component are the value of the system allocated to each
<br />component divided by the capacity in the system for each component. Allocation of wastewater system
<br />valuation to each component and determination of the wastewater capacity were described in Section 2.
<br />The development of unit costs for flow, BOD and SS based on those values are shown in the table below.
<br />
<br />Table 3-1. Development of Unit Costs for Flow, BOD and SS
<br />
<br />
<br />Using the unit costs for flow, BOD and SS, the capacity charge for any new connection may be
<br />calculated.
<br />
<br />
<br />Projected
<br />Item 2018 2019 2020 2021 2022 2023
<br />Net System Valuation
<br />Flow $222,021,750 $233,448,000 $245,311,500 $257,628,750 $270,416,250 $283,691,250
<br />BOD 37,003,625 38,908,000 40,885,250 42,938,125 45,069,375 47,281,875
<br />TSS 37,003,625 38,908,000 40,885,250 42,938,125 45,069,375 47,281,875
<br />Total $296,029,000 $311,264,000 $327,082,000 $343,505,000 $360,555,000 $378,255,000
<br />System Capacity
<br />Flow, gpd 10,600,000 10,600,000 10,600,000 10,600,000 10,600,000 10,600,000
<br />BOD, lbs/day 41,471 41,471 41,471 41,471 41,471 41,471
<br />SS, lbs/day 39,186 39,186 39,186 39,186 39,186 39,186
<br />Unit Costs of Capacity
<br />Flow, $/gallon $20.95 $22.02 $23.14 $24.30 $25.51 $26.76
<br />BOD, $/pound (rounded to $1) $892 $938 $986 $1,035 $1,087 $1,140
<br />SS, $/pound (rounded to $1) $944 $993 $1,043 $1,096 $1,150 $1,207
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