§ 50.56  DEFINITIONS.
   Unless otherwise defined in this subchapter, the terms and phrases shall be defined as follows:
   ADVISORY BOARD.  The Advisory Board for the Greater Elkhart County MS4 as established under the Interlocal Agreement dated July 27, 2005, between the County of Elkhart, City of Elkhart, City of Goshen, and Town of Bristol for the implementation of the Phase II Storm Water NPDES Permit Regulations.
   DEPARTMENT OF STORM WATER MANAGEMENT.  The City of Elkhart's Department of Storm Water Management.
   EQUIVALENT RESIDENTIAL UNIT (ERU).  The number of units, equal to the assumed average amount of impervious area of a single-family residential parcel of real estate within the city which is established at 3,600 square feet of impervious area per unit.  The unit value, which will be carried out and rounded off to 1 decimal point, being the equivalent of 0.1 of an ERU, is also the basis for calculating the assessment of storm water user fees for the city storm water system.
   IMPERVIOUS AREA.  Those areas which prevent or impede the infiltration of storm water into the soil as it enters natural conditions prior to development.  Common impervious areas include, but are not limited to, roof tops, sidewalks, walkways, patio areas, driveways, parking lots, storage areas, gravel surfaces, awnings and other fabric or plastic coverings, and other surfaces which prevent or impede the natural infiltration of storm water run-off which existed prior to development.
   KEY NUMBER.  A number assigned to a tract of land in Elkhart County by the Elkhart County Auditor that identifies the taxing district in which the tract is located, is a number that is not assigned to any other tract in Elkhart County, and is listed in the transfer book or records maintained under I.C. 6-1.1-5.
   MS4.  A municipal separate storm sewer system.
   MS4 OPERATOR.  The person designated by Elkhart County as the person responsible for the oversight of the MS4 program and permitting process.
   NON-RESIDENTIAL REAL ESTATE.  All real estate tax parcels which are not described by the definition of residential real estate shall be defined as non-residential.  Non-residential real estate will include:
      (1)   Agricultural real estate;
      (2)   Commercial real estate;
      (3)   Industrial real estate;
      (4)   Institutional real estate;
      (5)   Church real estate;
      (6)   School real estate;
      (7)   Federal, state, and local government real estate;
      (8)   Utility real estate; and
      (9)   Any other real estate not mentioned in this list and which is not described by the definition of RESIDENTIAL REAL ESTATE.
   RESIDENTIAL REAL ESTATE.  A separate tax parcel of real estate which is primarily used for dwelling purposes on which a building is situated which building contains 1 or more dwelling units which dwelling units are each used or are intended to be used primarily for living, sleeping, cooking, and eating.  RESIDENTIAL REAL ESTATE shall include all types of dwelling units including single-family homes, duplexes, triplexes, quadplexes, and row type homes.  RESIDENTIAL REAL ESTATE shall also include condominium dwellings, apartment dwellings, and mobile home parks.
   STORM WATER BOARD.  The Board of Directors of the Elkhart City Department of Storm Water Management.
   USER.  An owner of a tax parcel of real estate within the corporate boundaries of the city, which directly or indirectly contributes to the storm water system of the city.
(Ord. 5012, passed 2-5-2007; Am. Ord. 5246, passed 1-24-2011)