re enue due to reductions-and-e~ce~tisns. <br /> en calculating revenue requirements, the rate model also takes into account the effect <br /> o interest income and billing write-offs on the amount of service charges revenue <br /> co lected over the year. Interest income is a source of revenue just like the service <br /> ch ges. The more interest that the City earns, the less that it has to collect from service <br /> ch rges to cover program costs. Billing write-offs are the amount of revenue that the <br /> Ci does not collect because of non- orunder-payment of bills. Revenue requirements <br /> no c411ected due to billing write-offs must be collected from other customers to cover <br /> pr gram costs. <br /> S. .2 General Customer ESU Truncation <br /> explained above, general customers' ESUs are calculated by dividing their impervious <br /> su face by 1000 and truncating the result. In effect, the number of general customer <br /> E Us used by the rate model is less than the true number of general customer ESUs <br /> ex sting in Eugene. To maintain equality between customer sli}ssesce e ,typical <br /> re idential ESUs are adjusted by the same factor as the decrease in the total number of <br /> ge eral customer ESUs. <br /> 5. .3 Inactive Accounts <br /> T e City is using Eugene Water and Electric Board (EWEB) to bill the stormwater <br /> se 'ce charges. When a tenant moves out of a house, apartment or commercial unit, the <br /> o er of the building may request that the water and electric services be turned off. <br /> E B considers this an inactive account and will not send out stormwater bills for that <br /> pr perty until the water and electric services are requested again. The stormwater rate <br /> m del adjusts for inactive accounts b}~ reducing the billable impervious surface area <br /> ba ed on EWEB account history. <br /> 6.0 Adjus ments To A Customer.'s Fee <br /> The stormwa r service charge will be reduced if the customer shows to the City engineer's <br /> satisfaction on or more of the following: <br /> (1) Th customer has permanently reduced their quantity discharge to the public system, <br /> (2) Th customer has a different number of ESUs than is calculated by the City, or <br /> (3) Th customer with a quality surcharge has permanently reduced their quality impact to <br /> the public system. There are currently no quality surcharges imposed on stormwater <br /> Stormwater S rvice Charge: Methodology Paper -Page 11 <br /> <br /> ~ Draft Revisio s -April 10, 1995 <br /> <br /> i - <br /> <br />