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City of Santa Ana, CAI WATER, i2Ai E STUDY <br />Cost of Service Allocations <br />Costs of service are allocated to the customer classes by application of unit costs of service to respective <br />service requirements. Unit costs of service are based upon the total costs previously allocated to <br />functional components and the total number of applicable units of service. Dividing the costs allocated <br />to functional cost components by the respective total units of service requirements develops unit costs <br />of operation and maintenance expense, and net capital costs. <br />Unit Costs of Service <br />Table 19 presents total Test Year 0 &M expense and net capital costs allocated to functional cost <br />component as taken from Tables 16 and 17. <br />Table -19: Unit Costs of Services with Costs in Thousands of Dollars <br />1 <br />2 <br />3 <br />4 <br />5 <br />Net Operating <br />Expense <br />(Table 16, line <br />28) <br />Capital Costs <br />(Table 17, Line <br />13) <br />Total Cost of <br />Service <br />($000's) <br />Units of <br />Service in <br />000's <br />(Table 18, Line <br />13) <br />Cost per Unit <br />43,348.1 27,111.1 6,311.4 1,216.0 7,641.1 779.2 89.2 200.1 <br />13,808.0 9,579.4 3,147.4 554.3 296.6 45.0 173.4 11.9 <br />$57,156.1 $36,690.5 $9,458.8 $1,770.3 $7,937.7 $824.2 $262.6 $212.0 <br />15,862.2 40.1 23.0 122.0 <br />$2.31 $235.68 $76.81 $65.05 <br />per per <br />per HCF HCF /day HCF /day per EM <br />268.2 7.3 <br />86.1 <br />$3.07 $36.13 <br />$2.46 <br />per <br />hydran <br />per <br />per bill t - <br />HCF <br />Distribution of Costs of Service to Customer Classes <br />The customer class responsibility for service is obtained by applying the unit costs of service to the <br />number of units for which the customer class is responsible. Table 20 illustrates this process, in which <br />the unit costs of service are applied to the customer class units of service. <br />BLACK & VEATCH i 'a`/a'a. °: 49 <br />65B -61 <br />