One or more site maps at a scale of not less
than one inch equals 50 feet showing: revised pervious land use, including
vegetative cover type and condition; impervious land use, including
all buildings, structures, and pavement; revised topographic contours
of the site at a scale not to exceed two feet; revised drainage network,
including enough of the contiguous properties to show runoff patterns
onto, through, and from the site; locations and dimensions of drainage
easements; locations of maintenance easements specified in the maintenance
agreement; flow path and direction for all stormwater conveyance sections,
including time of travel and time of concentration applicable to each;
locations and type of all stormwater management conveyance and treatment
practices, including the on-site tributary drainage area; location
and type of conveyance system that will carry runoff from the drainage
and treatment practices to the nearest adequate outlet, such as a
curbed street, storm drain, or natural drainageway; watershed boundaries
used in determinations of peak flow discharge rates and discharge
volumes; and any changes to lakes, streams, wetlands, channels, ditches,
and other watercourses on and immediately adjacent to the site.