- St. Louis County’s Land Disturbance Code (Ordinance 21578 as amended by Ordinances 22468, 24084 and 25,494) regulates land disturbances.
- Official copies may be obtained from the County Clerk. Unofficial "User-Friendly" copies may be viewed on the Department of Public Works web site or obtained for a small fee from Public Works (314-615-5184)
- Land Disturbance – Any activity which affects the ground surface and/or vegetation (i.e.: clearing, grubbing, cut/fill, grading, excavating for foundations, etc.). Land disturbances are categorized as either Major or Ordinary depending on the size of the land disturbance.
- Major Land Disturbance – A land disturbance involving one acre (43,560 square feet) or more of land. This includes contiguous parcels/lots for a proposed development that ultimately will disturb one acre or more.
- Example: Advance grading of 0.90 acres for the construction of a cul-de-sac and infa-structure improvements for a new 6 lot subdivision, together with the eventual foundation excavation and construction of 6 houses/driveways is a Major Land Disturbance since ultimately more than one acre will be disturbed for the entire development.
- Ordinary Land Disturbance – A land disturbance involving 2,000 square feet or more and less than one acre (43,560 square feet) of land. Small land disturbances involving less than 2,000 square feet and cuts/fills less than 30 cubic yards are generally exempt from being regulated and needing a permit provided the disturbance doesn’t create problems/damage to adjoining property (i.e. changing elevation at property line, affecting existing swale drainage, etc).
- Example: A foundation excavation for a 5,000 square foot building addition where the excavated dirt is distributed over 10,000 square feet of site area during finish grading is a land disturbance affecting 15,000 square feet of land.