Inventory shall be made of the existing site conditions to gather information which will help persons develop the most effective stormwater management plan. The information obtained should be plotted on a map and verbally explained in the narrative and calculations portion of the plan.
(A) Topography. A 100-scale topographic map of the site should be prepared to show the existing contour elevations at two-foot intervals or other intervals as deemed necessary by the VA. When drainage areas are large and cover areas off-site, a USGS map may be used to show these off-site drainage areas.
(B) Drainage patterns. All existing drainage swales and patterns should be located and clearly marked on the topographic map.
(C) Soils. Major solid type(s) on the site should be determined and shown on the topographic map. Soil information can be obtained from the Soil Survey of Richland County, issued September 1975. Soil information should be plotted directly onto the map or an overlay of the same scale for ease of interpretation.
(D) Ground cover. The existing vegetation on the site should be shown on the topographic map. Such features as tree clusters, grassy areas, and unique vegetation should be located on the map. In addition, existing denuded or exposed soil areas should be indicated on the map.
(Ord. 16-96, passed 4-15-1996)