§ 160.02 DEFINITIONS.

   For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.

   BMP or BEST MANAGEMENT PRACTICE. An activity or structure that helps improve the quality of storm water runoff.

   CLEARING. Any activity that removes the vegetative surface cover.

   CONSTRUCTION ACTIVITY. Land-disturbing activities associated with the construction of infrastructure or structures. CONSTRUCTION ACTIVITY does not include routine ditch or road maintenance or minor landscaping projects.

   CONSTRUCTION PLAN. An ordered collection of drawings, narratives, data and documents assembled for review, approval, authorization and establishment of guidelines for the initiation, management and completion of construction activities at a project site regulated by this chapter. A storm water pollution prevention plan (SWP3) is a part of the construction plan.

   CONSTRUCTION PROJECT SITE. The physical location(s) or legal boundaries within which a construction activity or a series of construction activities is planned to be or is being accomplished.

   CONSTRUCTION SITE ACCESS. A stabilized stone surface at all points of construction-related egress from a project site planned and installed in accordance with specification from an approved reference manual, and maintained throughout the period of land-disturbing activities for the purpose of capturing and detaining sediment carried by tires, tracks or other surface contact components of vehicles, earthmoving equipment, or material and personnel transport conveyances.

   DRAINAGE WAY. Any channel that conveys surface stormwater runoff.

   DEPARTMENT. The Indiana Department of Environmental Management (IDEM).

   DEVELOPER. A project site owner or person financially responsible for construction activity; or an owner of property who sells, leases or offers for sale or lease any lot(s) in a subdivision or larger common plan of development or sale.

   DIRECTOR. The chief executive officer of IDEM.

   EROSION AND SEDIMENT CONTROL PLAN. A set of plans prepared by or under the direction of a licensed professional engineer or Certified Professional in Stormwater Quality (CPSWQ) indicating the specific measures and sequencing to be used to control sediment and erosion on a development site during and after construction.

   EROSION AND SEDIMENT CONTROL SYSTEM. Appropriate control measures combined to prevent or minimize the wearing away of soil, sediment and rock fragments by water, wind or ice and to intercept detached or suspended particles to prevent their discharge from or within a project site.

   EROSION CONTROL. A measure that prevents erosion.

   FINAL STABILIZATION. The establishment of permanent vegetative cover or the application of a permanent, non-erosive material to areas where all land-disturbing activities have been completed and no additional land-disturbing activities are planned under the current plan.

   GRADING. Excavation or fill of material, including the resulting conditions thereof.

   INDIVIDUAL BUILDING LOT. A single parcel of land in a multi-parcel development.

   LAND-DISTURBING ACTIVITY. Any man-made change of the land surface, including removing vegetative cover that exposes the underlying soil, excavating, filling, transporting and grading.

   MEASURABLE STORM EVENT. A precipitation event that results in a total measured accumulation of precipitation equal to or greater than one-half inch of rainfall.

   MS4 or MUNICIPAL SEPARATE STORM SEWER SYSTEM. A system of stormwater conveyances either owned or operated by a governmental agency that IDEM has designated as responsible to eliminate or minimize pollutant loadings of the stormwater entering waters of the state.

   MS4 AREA. Within this chapter, the corporate limits of the city under an NPDES permit regulated by 327 I.A.C. 15-13.

   MS4 OPERATOR. The person locally responsible for development, implementation or enforcement of the Stormwater Quality Management Plan (SWQMP) for the city as regulated under 327 I.A.C. 15-13, or a representative thereof.

   NOTICE OF PLAN APPROVAL (NPA). A notification from the MS4 Operator to the project site owner that the construction plan for a project site has been reviewed and approved by the MS4 Operator. The project site owner must insert the NPA with the notice of intent sent to the Director of IDEM at least 48 hours prior to initiating land-disturbing activities at the construction project site.

   NPDES. The National Pollutant Discharge Elimination System, a program administered by IDEM to reduce or eliminate the pollutant loadings into public waters.

   PEAK DISCHARGE. The maximum rate of flow from a point of stormwater discharge during or immediately following a storm event, usually in reference to a specific return period or design storm.

   PERIMETER CONTROL. A barrier that prevents sediment from leaving a site by filtering sediment-laden runoff or diverting it to a sediment trap or basin.

   PERMANENT STABILIZATION . The establishment, at a uniform minimum of 70% across the disturbed areas, of vegetative cover or permanent non-erosive material that ensures the resistance of the underlying soil to erosion, sliding or other movement.

   PHASING OF CONSTRUCTION. Sequential development of smaller portions of a large project site, stabilizing each portion before initiating land- disturbing activities on the next portion, to minimize exposure of land to erosion.

   RUNOFF. An accumulation of stormwater flow that is moving across the surface of the earth as sheet flow or concentrated flow in natural surface watercourses, drains or waterways.

   SEDIMENT. Solid material, both organic and mineral, that is in suspension, is being transported or has been moved from its site of origin by air, water, gravity or ice and has come to rest on the earth's surface.

   SEDIMENT CONTROL. Measures that prevent eroded sediment from leaving the site.

   SEDIMENTATION. The settling and accumulation of unconsolidated sediment carried by stormwater runoff.

   SITE. A parcel of land or a contiguous combination thereof, where grading work is performed as a single unified operation.

   SITE DEVELOPMENT PERMIT. A permit issued by the municipality for the construction or alteration of ground improvements and structures for the control of erosion, runoff and grading.

   START OF CONSTRUCTION. The first land-disturbing activity associated with a development, including land preparation such as clearing, grading and filling; installation of streets and walkways; excavation for basements, footings, piers or foundations; erection of temporary forms; and installation of accessory buildings such as garages.

   STORMWATER POLLUTION PREVENTION PLAN (SWP3). A plan developed to minimize the impact of stormwater pollutants resulting from construction and post-construction activities.

   STORMWATER QUALITY MEASURE. A practice or combination of practices to control or minimize pollutants associated with stormwater runoff.

   TEMPORARY STABILIZATION. The covering of soil to ensure its resistance to erosion, sliding or other movement. The term includes vegetative cover, anchored mulch or other non-erosive materials applied at a uniform minimum density of 70% across the disturbed areas of a project site.

   TRACKING. The movement and re-depositing of dirt, mud, aggregate, sediment or other stormwater pollutants from a project site by the actions of wheels, tires, skids, tracks or other surface contact components of cars, trucks, heavy equipment or material and personnel transport conveyances.

   WATERCOURSE. Any body of water, including but not limited to lakes, ponds, rivers, streams and bodies of water delineated within the city.

   WATERWAY. A channel that directs surface runoff to a watercourse or to the public storm drainage system.

(Ord. 04-2514, passed 10-4-04)