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• Best Management Practices (BMPs): Schedules of activities,prohibitions of practices,
<br /> general good-housekeeping practices,pollution prevention and educational practices,
<br /> maintenance procedures, and other management practices to prevent or reduce the discharge
<br /> of pollutants directly or indirectly to stormwater, receiving waters, or stormwater conveyance
<br /> systems. BMPs also include treatment practices, operating procedures, and practices to
<br /> control site runoff, spillage or leaks, sludge or water disposal, or drainage from raw materials
<br /> storage.
<br /> • Structural BMP: a physical device that is typically designed and constructed to trap or filter
<br /> pollutants from runoff or reduce runoff velocities.
<br /> • City: The City of Arden Hills.
<br /> • Clean Water Act: The federal Water Pollution Control Act(33 U.S.C. ' 1251 et seq.), and any
<br /> subsequent amendments thereto.
<br /> • Construction Activity: Activities subject to NPDES Construction Permits. These include
<br /> construction projects resulting in land disturbance of one acre or more. Such activities
<br /> include but are not limited to clearing and grubbing, grading, excavating, and demolition.
<br /> • Hazardous Materials: Any material, including any substance, waste, or combination thereof,
<br /> which because of its quantity, concentration, or physical, chemical, or infectious
<br /> characteristics may cause, or significantly contribute to, a substantial present or potential
<br /> hazard to human health, safety,property, or the environment when improperly treated,
<br /> stored, transported, disposed of, or otherwise managed.
<br /> • Illegal Discharge: Any direct or indirect non-storm water discharge to the storm drain
<br /> system, except as exempted in this ordinance.
<br /> • Illicit Connection: An illicit connection is defined as either of the following:
<br /> • 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 to enter the
<br /> storm drain system and any connections to the storm drain system from indoor drains
<br /> and sinks, regardless of whether said drain or connection had been previously
<br /> allowed,permitted, or approved by the City; or,
<br /> • Any drain or conveyance connected from a commercial or industrial land use to the
<br /> storm drain system which has not been documented in plans,maps, or equivalent
<br /> records and approved by the city.
<br /> • Industrial Activity: Activities subject to NPDES Industrial Storm Water Permits as defined in
<br /> 40 CFR, Section 122.26 (b)(14).
<br /> • Maximum Extent Possible(MEP). A standard for water quality that applies to all MS4
<br /> operators regulated under the NPDES program. Since no precise definition of MEP exists, it
<br /> allows for maximum flexibility on the part of MS4 operators as they develop and implement
<br /> their programs to reduce the discharge of pollutants to the maximum extent practicable,
<br /> including management practices, control techniques and system, design and engineering
<br /> methods, and such other provisions as the Administrator or the State determines appropriate
<br /> for the control of pollutants.
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