§ 151.17  DEFINITIONS.
   For the purpose of this subchapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning.
   BUILDING PERMIT.  A permit issued by the city pursuant to the provisions of the city building code for the construction, erection, alteration or demolition of a structure or building.
   CUT.  An excavation, the difference between a point on the original ground and a designated point of lower elevation on the final grade.  Also, the material removed in excavation.
   EXCAVATION.  Any act by which earth, sand, gravel, rock or any other similar material is cut into, dug, quarried, uncovered, removed, displaced, relocated or bulldozed and shall include the conditions resulting therefrom.
   FILL.  Any act by which earth, sand, gravel, rock or any other material is deposited, placed, pushed, dumped, pulled, transported or moved to a new location and shall include the conditions resulting therefrom.
   GRADE.  The elevation of the existing ground surface at the location of any proposed excavation or fill.
   GRADING PERMIT.  Any permit required under § 151.35.
   RUNOFF.
      (1)   The surface water discharge or rate of discharge of a given watershed after a fall of rain or snow that does not enter the soil but runs off the surface of the land.
      (2)   From a fully developed area upstream shall mean the surface water runoff that can be reasonably anticipated upon maximum development of that area of the watershed located upstream from the subject tract, as permitted by prevailing zoning.
   SEDIMENTATION or SEDIMENT.  The process by which mineral or organic matter is accumulated or deposited by moving wind, water or gravity.  Once this matter is deposited (or remains suspended in water), it is usually referred to as sediment.
   SITE.  A lot, tract or parcel of land, or a series of lots, tracts or parcels of land, joined together where grading work is continuous and performed at the same time.
   SLOPE.  The face of an embankment or cut section; any ground whose surface makes an angle with the plane of the horizon.  Slopes are usually expressed as a ratio of horizontal distance to verticals or in a percentage based upon vertical difference in feet per 100 feet of horizontal distance.
   SOIL STABILIZATION.  Chemical or structural treatment designed to increase or maintain the stability of a mass of soil or otherwise to improve its engineering properties.
(`94 Code, § 151.17)