Agenda Packets - 1983/05/23 - Laserfiche WebLink

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37.05 Sedimentation is the transportation and deposition of sediment. Sou Loss is soil moved from a given site because of land-dis� turoing activities or by the forces of erosion and redeposited at another site on land or in a body of water, Stor^cater Runoff is the water derived frcm rains falling within a tri utary drainage basin, flowing over the surface of the ground or collected in channels, wratercourses or conduits, Structural Measures are works of improvement for land stab itatioI' n t�ve�t erosion, sediment or runoff. Ten Year Storms are those rainstorms of varying durations and intensities that ave a ten percent (10%) chance to occur each year. Ten Year Storm Runoffs are the stormwater runoffs from the ten year storms. LRN1J-UIb1UKB ING ACTIVITIES SUOJECr TO ERGSiO`, SEDIMENT, %SITE DhTEYrIUN A,YD R11,,'OFf: CUYIRUL. Lij General Reeuiremeac. Any owner, occupant or user who undertakes, commences or performs land -disturbing activities; or who permits another person to do the some, en land subject to this section, shall be subject to this ordinance. (2) Land -Disturbing Activities Subiect to Erosion and Sediment �6LV uiw vu PuuiiL. lanes ane on ail private lands s all a subject to this ordinance, if: (a) An area of 4,000 square feet or greater will be disturbed resulting in the loss or removal of protective ground cover or vegetation, or, (b) Excavation, fill, or any combination thereof, will exceed 400 cubic yards, or, (c) Any public (federal, state or local) street, road or highway is to be constructed, enlarged, relocated or substantially reconstructed, or, (d) Any use by a unit of government or by public or private utilities in which underground pipe or facilities will be laid, repaired, replaced or enlarged for a distance of over 300 feet. (e) Any subdivision of land as defined by Sec. 16.23 of the Madison General Ordinances entitled "Land Subdivision Regulations" which requires plat approval or any certified survey. (3) Land-Disturbin Activities Subiect to Cnsite Detention and uno t Control. Activities on pu lie Lands ana on all private ands snal a subject to this ordinance, if: . (a) The activity will be a residential development having a gross aggregate area of five acres or more, or, (b) The activity will be a residential development on less than five acres and more than three acres, having fifty percent (50:) or more of the area as impervious surfaces. (c) The activity will be a development, other than residential, having a gross aggregate area of three acres or more, or, (d) In the opinion of the Administrative Authority the runoff from the activity will exceed the safe capacity of the existing drainage facilities and/or receiving water body; or cause undue channel erosion; or increase water pollution by scour and transport of particles; or endanger the downstream property,