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8. ILLICIT CONNECTION: Either of the following:
<br />a. Any drain or conveyance, whether on the surface or subsurface, which allows an
<br />illegal discharge to enter the storm drain system (including any non -storm water
<br />discharge) including wastewater, process wastewater, and wash water and any
<br />connections to the storm drain system from indoor drains and sinks, regardless of
<br />whether said drain or connection had been previously allowed, permitted, or
<br />approved by the City; or,
<br />b. Any drain or conveyance connected from a residential, commercial or industrial
<br />land use to the storm drain system which has not been documented in plans,
<br />maps, or equivalent records and approved by the City.
<br />9. IMPERVIOUS SURFACE: A hard surface area which either prevents or retards the
<br />entry of water into the ground. Common impervious surfaces include, but are not
<br />limited to, roof tops, walkways, patios, driveways, parking lots or storage areas,
<br />concrete or asphalt paving, gravel roads, packed earthen materials, or other surfaces
<br />which similarly impede the natural infiltration of surface and storm water runoff.
<br />10. MAXIMUM EXTENT PRACTICABLE (MEP): A standard for water quality that
<br />applies to all MS4 operators regulated under the NPDES program. Since no precise
<br />definition of MEP exists, it allows for maximum flexibility on the part of MS4
<br />operators as they develop and implement their programs to reduce the discharge of
<br />pollutants to the maximum extent practicable, including management practices,
<br />control techniques and system, design and engineering methods, and such other
<br />provisions as the Administrator or the State determines appropriate for the control of
<br />pollutants.
<br />11. MECHANICAL CLEANING TECHNIQUES: Arranging the collision between the
<br />substance being removed and some object. Mechanical cleaning techniques
<br />include: sweeping, shoveling, or blowing. This does NOT include using water to
<br />clean the surface.
<br />12. MPCA: The Minnesota Pollution Control Agency.
<br />13. MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4): The system of
<br />conveyances (including sidewalks, roads with drainage systems, municipal streets,
<br />catch basins, curbs, gutters, ditches, channels, or storm drains) owned and operated
<br />by the City and designed or used for collecting or conveying storm water, and which
<br />is not used for collecting or conveying sewage.
<br />14. NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES):
<br />The national program for issuing, modifying, revoking, and reissuing, terminating,
<br />monitoring, and enforcing permits, and imposing and enforcing pretreatment
<br />requirements under sections 307, 318, 402, and 405 of the Clean Water Act, United
<br />States Code, title 33, sections 1317, 1328, 1342, and 1345.
<br />15. PERSON: Any individual, firm, corporation, partnership, franchise, association or
<br />governmental entity.
<br />16. PERVIOUS SURFACE: Pervious areas permit water to enter the ground by virtue
<br />of their porous nature or by large voids in the material. Commonly pervious areas
<br />have vegetation growing on them.
<br />17. POLLUTANT: Any substance which, when discharged has potential to or does any
<br />of the following:
<br />a. Interferes with state designated water uses;
<br />b. Obstructs or causes damage to waters of the state;
<br />c. Changes water color, odor, or usability as a drinking water source through causes
<br />not attributable to natural stream processes affecting surface water or subsurface
<br />processes affecting groundwater;
<br />d. Adds an unnatural surface film on the water;
<br />e. Adversely changes other chemical, biological, thermal, or physical condition, in
<br />any surface water or stream channel;
<br />f Degrades the quality of groundwater; or
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