Sediment and Erosion Control & SWPPP


On Construction or Land Disturbance Sites, soil is highly vulnerable to erosion by wind and water.  Eroded soil endangers water resources by reducing water quality and causing the siltation of aquatic habitat for fish and other desirable species.  Deposits of eroded soil also necessitate maintenance of sewers and ditches and the dredging of lakes.  In addition, clearing and grading during construction cause the loss of native vegetation necessary for terrestrial and aquatic habitat.  Construction activities also utilize materials and generate wastes, which if not properly controlled can pollute receiving waters.

      

 St. Louis County Land Disturbance Permit Requirements


Any disturbance inside the public right-of-way, that is designated as a part of the County Road System (CRS):

    will require a Special Use Permit;

    applies in unincorporated and municipalities with County mainted streets.


Any land disturbance activity involving 1 acre or more of land, or a site involving less than 1 acre that is part of a proposed development that will ultimately disturb 1 acre or more:

    will require a Major Land Disturbance Permit and SWPPP;

    applies in unincorporated County and in contracting municipalities.


Any land disturbance activity involving less than 1 acre of land:

    will require an Ordinary Land Disturbance Permit and BMP's;

    applies in unincorporated County and in contracting municipalities.



Any land disturbance activity involving less than 30 cubic yards of soil / earth moved and less than 2,000 square feet of disturbed area;

    will not require a land disturbance permit;

    applies in unincorporated County and in contracting municipalities;

    erosion control is required when necessary, until vegetation is established.


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