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APR 494 <br />compliance with legal authorities <br />conservation <br />compliance with appropriate customer <br />contracts <br />understandability <br />simplicity in updating <br />avoidance of discriminatory rate <br />relationships - <br />implementation. <br />Mr. Raftelis explained how the water and sewer costs <br />are identified and broken down between operating costs and <br />capital costs, noting that capital costs are one time <br />construction costs while operating costs cover such recur- <br />ring expenses as cost of electricity, salaries, etc. The <br />next step is to allocate those costs to various charges to <br />recover them. Specific services have been identified, i.e., <br />water service connection, sewer service connection, service <br />call, meter testing, fire protection, etc.; these costs <br />typically are equal to all customers, and charges are <br />recommended for providing just those services. After these <br />costs are removed, it then becomes necessary to recover the <br />rest through the monthly service charges. He went on to <br />explain that in sewer operations and water operations there <br />is a fixed portion and a variable portion. The fixed <br />portion is charged whether you use any water or not. The <br />second kind of costs are availability costs which recover <br />primarily capital costs - i.e., loan payments to FmHA - and <br />he noted that the utility has to pay that charge no matter <br />whether the customers use anything or not. The only <br />difference between,the availability costs and the account <br />costs that are recovered is in the way they are allocated to <br />customers. Account costs (costs for billing, collection, <br />meter reading, etc.) are allocated to each customer equally <br />no matter what size meter or single or multi family unit. <br />The capital costs do vary and what has been developed is a <br />concept of equivalent residential units, referred to as an <br />'ERU. An ERU represents what an average residential customer <br />is expected to use of water and sewer service. A single <br />5 <br />BOOK 6 PAGE U2 O <br />