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1 ~ ~-6_GROUNDWATER: Water contained below the surface of the earth in the saturated zone including,
<br />2 without limitation, all waters whether under conned, unconfined, or perched conditions, in near
<br />3 surface unconsolidated sediment or regolith, or in rock formations deeper underground.
<br />4 ~ ~7_ILLEGAL/ ILLICIT DISCHARGE: Any direct or indirect non-storm water discharge to the storm
<br />5 drainage system, except as exempted in this chapter:
<br />6 I 7~:8_ILLICTT CONNECTION: Either of the following:
<br />7 (i) Any drain or conveyance, whether on the surface or subsurface, which allows an illegal discharge to
<br />8 enter the storm drain system (including any non-storm water discharge) including wastewater,
<br />9 process wastewater, and wash water and any connections to the storm drain system from indoor
<br />10 drains and sinks, regardless of whether said drain or connection had been previously allowed,
<br />11 permitted, or approved by the City; or,
<br />12 (ii) Any drain or conveyance connected from a residential, commercial or industrial land use to the
<br />13 storm drain system which has not been documented in plans, maps, or equivalent records and
<br />14 approved by the City.
<br />15 ~ 8-9_IMPERVIOUS SURFACE: A hard surface area which either prevents or retards the entry of water
<br />16 into the ground. Common impervious surfaces include, but are not limited to, roof tops, walkways,
<br />17 patios, driveways, parking lots or storage areas, concrete or asphalt paving, gravel roads, packed
<br />18 earthen materials, or other surfaces which similarly impede the natural infiltration of surface and storm
<br />19 water runoff.
<br />20 ~ ~I 0. MAXIMUM EXTENT PRACTICABLE (MEP): A standard for water quality that applies to all
<br />21 MS4 operators regulated under the NPDES program. Since no precise definition of MEP exists, it
<br />22 allows for maximum flexibility on the- part of MS4 operators as they develop and implement their
<br />23 programs to reduce the discharge of pollutants to the maximum extent practicable, including
<br />24 management practices, control techniques and system, design and engineering methods, and such
<br />25 other provisions as the Administrator or the State determines appropriate for the control of pollutants.
<br />26 ~ -~1 1. MECHANICAL CLEANING TECHNIQUES: Arranging the collision between the substance
<br />27 being removed and some object. Mechanical cleaning techniques include: sweeping, shoveling, or
<br />28 blowing. This does NOT include using water to clean the surface.
<br />29 ~~-12. MPCA: The Minnesota Pollution Control Agency.
<br />30 I ~-2-i 3. MUNICIPAL SEPARATE STORM SEWER SYSTEM
<br />(MS4): The system of conveyances
<br />31 (including sidewalks, roads with drainage systems, municipal streets, catch basins, curbs, gutters,
<br />32 ditches, channels, or storm drains) owned and operated by the City and designed or used for collecting
<br />33 or conveying storm water, and which is not used for collecting or conveying sewage.
<br />34 ~ ~l 4. NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES): The national
<br />35 program for issuing, modifying, revoking, and reissuing, terminating, monitoring, and enforcing
<br />36 permits, and imposing and enforcing pretreatment requirements under sections 307, 318, 402, and 405
<br />37 of the Clean Water Act, United States Code, title 33, sections 1317, 1328, 1342, and 1345.
<br />38 ~ ~.-15. PERSON: Any individual, firm, corporation, partnership, franchise, association or governmental
<br />39 entity.
<br />40 ~ ~--5-16. PERVIOUS SURFACE: Pervious areas permit water to enter the ground by virtue of their
<br />41 porous nature or by large voids in the material. Commonly pervious areas have vegetation growing on
<br />42 them.
<br />43 I ~-Er.17. POLLUTANT: Any substance which, when discharged has potential to or does any of the
<br />44 following:
<br />45 (i) Interferes with state designated water uses;
<br />46 (ii) Obstructs or causes damage to waters of the state;
<br />47 (iii) Changes water color, odor, or usability as a drinking water source through causes not attributable to
<br />48 natural stream processes affecting surface water or subsurface processes affecting groundwater;
<br />49 (iv) Adds an unnatural surface film on the water;
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