Definitions.

As used in this article, the following terms shall have the meanings indicated:DRAINAGE DISTRICT FEEThe fee charged for costs incurred by the Town in providing stormwater services.DRAINAGE DISTRICT FEE DISCOUNTThe scaling discount percentage that shall be applied in the calculation of Drainage District fees. For structures or practices that, as determined by the MS4 Official, are anticipated to provide:A. Both treatment quality and quantity attenuation, the discount rate shall be up to 40%.B. Either treatment quality or quantity attenuation, the discount rate shall be up to 20%.EQUIVALENT RESIDENTIAL UNIT (ERU)The average amount of impervious surface on a residential property in the Town, as determined by the Town Board.IMPERVIOUS SURFACEAny surface on a lot that, because of the surface's composition or compacted nature, impedes or prevents natural infiltration of water into the soil, including, but not limited to, roofs, solid decks, driveways, patios, sidewalks (other than public in municipal rights-of-way), parking areas, tennis courts, concrete, asphalt, or crusher/run streets or paths, or compacted gravel or dirt surfaces, as determined by the Engineering Department.IMPERVIOUS SURFACE AREAAs recorded or calculated by the Engineering Department, the number of square feet of horizontal surface on a lot covered by an impervious surface.LOTA lot or parcel of land, as found on the Town of Webster assessment roll.MS4 OFFICIAL/STORMWATER MANAGEMENT OFFICERThe Town employee designated by Town Board resolution to be responsible for compliance with the NYSDEC MS4 program requirements as well as having the authority to perform all duties designated to this position as outlined in the Town Code.NONRESIDENTIAL LOTAll developed and/or improved lots other than those used as residential or agricultural lots.PROPERTY CLASS CODEThe property type classification code, as defined by the New York State Office of Real Property Services in the Assessors' Manual, assigned to an assessment site by the Town of Webster Assessor, as may be updated by that department from time to time.RESIDENTIAL LOTA developed lot with a site property class code of 210, 215, 220, 230, 240, 250, or 270, or substantially identical successor designations.STORMWATERThe runoff from all forms of precipitation that travels over natural or developed surfaces to the nearest stream, other conduit, or impoundment and appears in lakes, rivers, ponds, or other bodies of water.STORMWATER SERVICESThe Town's program for protection of stormwater quality and for the partial control and conveyance of stormwater, including, but not limited to public education; monitoring, removing, and regulating stormwater pollutants; other activities described in the Town's New York SPDES permit; mapping; planning; regulating, reviewing and inspecting private stormwater infrastructure; operating, constructing, improving, cleaning, and maintaining the Town's stormwater system; and any and all expenses deemed reasonably necessary to the management of stormwater within the Town in the judgment of the Superintendent of Highways, including, but not limited to, the payment of debt principal and debt service, and the establishment of a reserve fund to pay for these services.STORMWATER SYSTEMThe system of natural and constructed conveyances for collecting and transporting stormwater, including, but not limited to, lakes, ponds, rivers, perennial, intermittent, and/or channeled streams, connected wetlands, open ditches, catch basins and other inlets, pipes, sewers, drains, culverts, and created stormwater management facilities that provide partial treatment by passive means such as wet detention ponds, detention basins, and stormwater wetlands.