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construction-phasing, minimizing the length of time soil areas are exposed,prohibitions,
<br /> and other management practices published by state or designated area-wide planning
<br /> agencies.
<br /> a. Non-structural BMP: Practices that focus on preserving open space, protecting
<br /> natural systems, and incorporating existing landscape features such as wetlands and
<br /> stream corridors to manage storm water at its source. Other practices include
<br /> clustering and concentrating development, minimizing disturbed areas, and reducing
<br /> the size of impervious areas.
<br /> b. Structural BMP: a physical device that is typically designed and constructed to trap
<br /> or filter pollutants from runoff, or reduce runoff velocities.
<br /> 2. COMMERCIAL: Activity conducted in connection with a business.
<br /> 3. DISCHARGE: Adding, introducing, releasing, leaking, spilling, casting, throwing, or
<br /> emitting any pollutant, or placing any pollutant in a location where it is likely to pollute
<br /> waters of the state.
<br /> 4. EQUIPMENT: Implements used in an operation or activity. Examples include,but are
<br /> not limited to; lawn mowers, weed whips, shovels, wheelbarrows and construction
<br /> equipment.
<br /> 5. EROSION: any process that wears away the surface of the land by the action of water,
<br /> wind, ice, or gravity. Erosion can be accelerated by the activities of man and nature.
<br /> 6. GROUNDWATER: Water contained below the surface of the earth in the saturated zone
<br /> including, without limitation, all waters whether under conned, unconfined, or perched
<br /> conditions, in near surface unconsolidated sediment or regolith, or in rock formations
<br /> deeper underground.
<br /> 7. ILLEGAL/ILLICIT DISCHARGE: Any direct or indirect non-storm water discharge to
<br /> the storm drainage system, except as exempted in this chapter.
<br /> 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 approved
<br /> by the City; or,
<br /> b. Any drain or conveyance connected from a residential, commercial or industrial land
<br /> use to the storm drain system which has not been documented in plans,maps, or
<br /> 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 limited
<br /> to,roof tops, walkways, patios, driveways, parking lots or storage areas, concrete or
<br /> asphalt paving, gravel roads,packed earthen materials, or other surfaces which similarly
<br /> 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 operators
<br /> as they develop and implement their programs to reduce the discharge of pollutants to
<br /> the maximum extent practicable, including management practices, control techniques
<br /> and system, design and engineering methods, and such other provisions as the
<br /> Administrator or the State determines appropriate for the control of pollutants.
<br /> 11. MECHANICAL CLEANING TECHNIQUES: Arranging the collision between the
<br /> substance being removed and some object. Mechanical cleaning techniques include:
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