Example
Checklist for Final
Stormwater
Management Plan Preparation and Review
- Applicant information
- Name, legal address,
and telephone number
- Common address and legal
description of site
- Signature and stamp of
registered engineer/surveyor and design/owner certification
- Vicinity map
- Existing and proposed
mapping and plans (recommended scale of 1" = 50' or greater detail) which
illustrate at a minimum:
- Existing and proposed
topography (minimum of 2-foot contours recommended)
- Perennial and intermittent
streams
- Mapping of predominant
soils from USDA soil surveys as well as location of any site-specific
borehole investigations that may have been performed.
- Boundaries of existing
predominant vegetation and proposed limits of clearing
- Location and boundaries
of resource protection areas such as wetlands, lakes, ponds, and other
setbacks (e.g., stream buffers, drinking water well setbacks, septic setbacks)
- Location of existing
and proposed roads, buildings, and other structures
- Location of existing
and proposed utilities (e.g., water, sewer, gas, electric) and easements
- Location of existing
and proposed conveyance systems such as grass channels, swales, and storm
drains
- Flow paths
- Location of floodplain/floodway
limits and relationship of site to upstream and downstream properties
and drainages
- Location and dimensions
of proposed channel modifications, such as bridge or culvert crossings
- Location, size,
maintenance access, and limits of disturbance of proposed structural stormwater
Management practices
- Representative cross-section
and profile drawings and details of structural stormwater Management practices
and conveyances (i.e., storm drains, open channels, swales, etc.) which include:
- Existing and proposed
structural elevations (e.g., invert of pipes, manholes, etc.)
- Design water surface
elevations
- Structural details
of outlet structures, embankments, spillways, stilling basins, grade control
structures, conveyance channels, etc.
- Logs of borehole
investigations that may have been performed along with supporting geotechnical
report.
- Hydrologic and hydraulic
analysis for all structural components of stormwater system (e.g., storm drains,
open channels, swales, Management practices, etc.) for applicable design storms
including:
- Existing condition
analysis for time of concentrations, runoff rates, volumes, velocities,
and water surface elevations showing methodologies used and supporting
calculations
- Proposed condition
analysis for time of concentrations, runoff rates, volumes, velocities,
water surface elevations, and routing showing the methodologies used and
supporting calculations
- Final sizing calculations
for structural stormwater Management practices including, contributing
drainage area, storage, and outlet configuration
- Stage-discharge
or outlet rating curves and inflow and outflow hydrographs for storage
facilities (e.g., stormwater ponds and wetlands)
- Final analysis of
potential downstream impact/effects of project, where necessary
- Dam breach analysis,
where necessary
- Final landscaping plans
for structural stormwater Management practices and any site reforestation
or revegetation
- Structural calculations,
where necessary
- Applicable construction
specifications
- Erosion and sediment
control plan that at a minimum meets the requirements of the local Erosion
and Sediment Control Guidelines
- Sequence of construction
- Maintenance plan which
will include:
- Name, address, and
phone number of responsible parties for maintenance.
- Description of annual
maintenance tasks
- Description of applicable
easements
- Description of funding
source
- Minimum vegetative
cover requirements
- Access and safety
issues
- Testing and disposal
of sediments that will likely be necessary
- Evidence of acquisition
of all applicable local and non-local permits
- Evidence of acquisition
of all necessary legal agreements (e.g., easements, covenants, land trusts)
- Waiver requests
- Review agency should
have inspector's checklist identifying potential features to be inspected
on site visits