Banks: dark blue
Freshwater Wetlands: Green with swamp symbols superimposed
Land Subject to Flooding: Dashed blue line
Isolated Land Subject to Flooding: Red
Seasonal Wetlands: Yellow
Buffer for Areas Subject to Protection under this Ordinance: Dashed Green
Limit of Work: Purple
Drawings must include delineations of all alterations proposed in or adjacent to wetlands and floodplains as indicated below:
Areas to be dredged or filled: Outline in red
Areas to be altered in any other way, other than dredging or filling: Outline in black.
Plans must include the following:
Calendar dates of measurements, samplings, contours, etc. Datum should be in NGVD base. The contour interval shall be no greater than two feet.
Existing and final contours and contour interval used including pond bottom and stream invert contours.
Soil characteristics in representative parts of the property including depth of peat and soil types in wetlands. Test boring logs shall be submitted.
Locations, sizes, and slopes of existing and proposed culverts and pipes.
Cross-sections of all wetlands, showing slopes, banks and bottom treatments.
Existing and proposed water storage capacity of the property, including calculations and data on which the capacity is based. If filling is proposed, determine the effect of loss of storage on downstream channels and culverts.
Location and elevation of benchmark used for survey.
Existing trees, stone walls, fences, buildings, historic sites, rock ridges, and outcroppings.
Invert elevations on catch basins.
Proposed on site pollution control devices such as hooded catch basins, oil absorption pillows, detention or retention