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<br /> ~1 <br /> • Medium Re idential Category - the group of residential customers who have more than 1,000 and <br /> ~ less than 3,000 square feet of estimated building foot print. Duplexes <br /> with a total foot print of more than 2,000 and less than 6,000 square <br /> feet will be treated as two medium residential properties. <br /> • Stormwate Water from precipitation, surface or subterranean water from any source which <br /> does not contain wastewater, drainage. <br /> • General St rm Customers all customers who are not in the Small or Medium Residential <br /> Categories. <br /> • Impervious urface any hard surface area that causes water to run offthe surface in greater <br /> quantities or at an increased rate of flow from conditions pre-existing to <br /> development. Common impervious surfaces include, but are not limited <br /> to, rooftops, walkways, driveways, parking lots and concrete surface or <br /> asphalt paving. <br /> • Administrat a Costs stormwater system costs that do not vary by the amount of impervious <br /> surface belonging to a customer. These costs are customer or account <br /> driven as opposed to stormwater discharge based. An example is billing <br /> costs. <br /> • Direct or I irect Discharge to the Stormwater System movement of stormwater from <br /> private property to a public storm drainage facility. This includes, but <br /> is not lirruted to, pipe connections, ditches, and sheet flow (i.e. runoff <br /> from impervious surfaces which is not contained on site and, which <br /> may flow on or over the surface of the ground, does not contain <br /> wastewater, and ultimately discharges to a public storm drainage <br /> facility). <br /> • Equivalent S rvice Unit (ESU) defined as 1,000 square feet of impervious area and used as the <br /> basis for calculating the Stormwater service charge for a <br /> customer. <br /> • Reduction decrease in,,; e the quantity and quality components of customers' <br /> fees. The amount of the reduction is based on the amount customers reduce their <br /> discharge to the public Stormwater system. <br /> -,ex~~~, - 1 e~sts~r,bu~tileto t'}ae imp rvio s <br /> 'n~te~ere storm drainage-facil~tics: A]1 storm~watet~cs(~m~e,~benefi~ <br /> from the street network and share'these cU,~ts, <br /> 5.0 M thud For Determining Stormwater Service Charges <br /> The method fo determining an individual customer's charge is based on a rate structure that applies <br /> Stormwater S rvice Charge: Methodology Paper -Page 3 <br /> Draft Revisio s -April 10, 1995 <br /> <br />