Documentation

The following, comprehensive list is presented as a basis for discussion between regulatory authorities and design practitioners.
==Site Description==
* Location (key plan, municipal address, nearest roads, watershed and subwatershed);
* Existing Conditions (land use on site and surrounding areas);
* Natural Heritage features;
* Proposed Conditions;
* Drainage Area (for the site, tributary and watershed);
* Watercourses, wetlands present on site, and type (permanent or intermittent);
* Drainage patterns and ultimate drainage location/outfall;
==Background Information==
* Pre-submission meeting verification;
* Reports from pre-consultation with MOECP and other agencies (especially related LID credits);
* Watershed plans;
* Sub-Watershed plans;
* Master drainage plans (MDPs);
* Other previous reports and relevant SWM requirements;
* Existing models;
* Geotechnical report;
* Hydrogeological report;
==Figures and drawings==
* Location plan in the report;
* Key plan on the drawings;
* All watercourses and names of watercourses shown on all figures and drawings;
* Pre-development and post-development drainage plans for hydrologic model(s) which include:
**Existing contours;
**Drainage direction (minor and major system);
**Catchments ID's;
**Areas and imperviousness;
**Uncontrolled areas;
**100 year capture;
**Site outlets; and
**LID facility location and associated tributary areas;
* Model schematics;
* Storm drainage, grading and general servicing plans;
* LID practice design drawings and details;
* Erosion and sediment control plans;
Parameter 	Plan	Detail	Profile	Description
Location 	x 	 	 	Area extent shown on plan view (bump-outs, municipal reserves, private lots, parks)
Surface area 	x 	 	 	Outlined on plan view drawings and stated in report
Inlet 	x 	x 	 	shown on plan view and typical details provided (curb cuts, flow spreader, ribbon curb)
Materials 	 	x 	 	Materials specs (soil, drainage layer), depth, hydraulic conductivity, porosity
Vegetation 	x 	x 	 	Planting plan and vegetation details (species, mature density, succession plan)
Outlet 	x 	x 	x 	Underdrain spec and slope, spill elevation, catch basin type and grate, weir type and location, inlet control device details
Catchment 	x 	 	 	Delineated catchment area directed to bioretention facility
Subsurface materials	 	x 	 	Layer order (filter, reservoir, choker course, geotextiles (if using)) and specifications (gradation, hydraulic conductivity, void space)
Depth 	 	x 	x 	Depth of each layer, reservoir retention depth (if applicable), surface ponding depth (if applicable)
Slope 	 	x 	x 	Sub-base slope and surface slope
Flow Arrows 	 	x 	 	From contributing area and overflow route
Water depth 	 	x 	 	Ponding depth and water surface elevation during design storm and maximum prior to overflow
Inundation 	 	x 	 	Extent of of inundation during design storms
Erosion control 	x 	x 	 	Located at inlet, outlet if overland spill
==Design Information==
* Consistent hydrology modelling to be utilized for each development application and/or consistent with MESP/MSP/Studies.
* Supporting information has been included for all modelling parameters and calculations.
*Stage-Storage-Discharge calculations provided for each LID facility including design information on control and emergency overflow weirs.
*Flow and storage summary tables provided which reference the associated drainage area, catchment ID, outlet(s) and differentiate between controlled and uncontrolled areas.
*Identify and show seasonal high groundwater levels in report and on drawings;
*Per MOECC SWM manual, 2003 (i.e. Drainage area, required volume, slopes, forebay, etc.);
*The SWM report and drawings are to include a table summarizing required storage, provided storage and associated elevation and flow for the permanent pool, 25mm (extended detention), and 2 through 100 year return period storm events where applicable for each facility;
*An operations and maintenance manual (includings a maintenance schedule) should be included in the SWM Report for all LID facilities in accordance with municipal requirements;
*Complete information on proposed manufactured treatment devices is to be provided including current status under ETV protocols;
===Quantity control===
*Runoff coefficient or imperviousness calculations;
*Analysis using appropriate storm distributions;
*Pre-development peak flow (m³/s);
*Post-development uncontrolled peak flow (m³/s);
*Post-development controlled peak flow (m³/s);
*LID Facility Type;
*Stage – Storage – Discharge Table;
*Outlet design and calculations;
*Total storage required (m3);
*Total storage provided (m3);
*Table comparing provided versus required;
*Overland flow conveyance and design;
*External drainage conveyance (100 year and Regional);
===Quality control===
*Level of protection;
*Drainage area to facility in hectares;
*Percentage impervious – total and directly connected areas;
*SWM facility monitoring and maintenance requirements;
==Hazard land management==
*Regional event and 1:100 year flood lines under existing and proposed conditions shown on appropriate plan drawings;
*Valley top of bank, stream erosion, steep slope allowances and meanderbelt assessed (confined stream systems only);
*Wetlands and required setbacks determined and identified on plans;
*Meanderbelt assessment and/or setback determined and identified on plans;
*Wave uprush and/or wind setup elevations calculated;
*“Limit of development” shown on plans;
*Survey and floodplain mapping submitted (see below);
*Hydraulic modelling and analysis including digital files;
==Other==
*Upon approval of the SWM design, a digital copy of the stormwater drainage plan is to be submitted including the location and size of the SWM facility in GIS format;
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===Floodplain mapping and documentation minimum requirements===
# Hydraulic sections with regulated floodplain elevations and cross-section identification;
# Existing and proposed floodplain delineation;
# Topographic information including elevations and contours;
# Conveyance structures including dams, bridges, culverts and weirs;
# Man-made structures as applicable including buildings, roads, railways and trails;
# Natural reservoirs or natural storage areas;
# Spills analysis as applicable;
# Cut/fill analysis in the regulated area as applicable;
# Natural features such as watercourses and wetlands;
# Floodplain mapping and supporting documentation signed and stamped by a P.Eng.
===Survey documentation minimum requirements===
For any submission which contains drawings or figures that present survey information, the following list of minimum requirements must be included:
# Document with text descriptor identifying overall approach and methodology;
# Drawing/Figure Title;
# Date, and Revision List where applicable;
# Legible Scale and North direction arrow;
# OLS Surveyor Name and contact information, as applicable;
# Geodetic benchmark data used in survey, as applicable;
# Available survey data for topographic surface, structures, features, etc.;
# Structures invert, obvert elevations and dimensions as applicable;
# Bathymetry as applicable;
# Documentation to support reported data accuracy;
# Methodology for survey data collected i.e. Total Station, GIS, Rod and Level;
# Photo log of structures survey including upstream, downstream and structures completed with structure survey;
# Drawings and / or figures to be submitted both electronically and in hard copy as requested;
# Digital copy of the survey data when applicable; and
# Submission components to be stamped and signed by an OLS, P.Eng. or C.E.T. as relevant.
===Geospatial data submission minimum requirements===
For a submission which contain drawings, figures, reports, modelling and / or memos that present geospatial information and its analysis; the following list of minimum requirements must be included:
# Text summary identifying methodology and software used in geospatial analysis;
# Acquisition type i.e. LIDAR, orthophotos, etc.;
# Date of data acquisition;
# Name of supplier of digital information and their contact information;
# Quality Assurance / Quality Control methodology for geo-spatial as applicable;
# Data Co-ordinate system;
# Data Projection;
# Data Horizontal and vertical resolution;
# Data Accuracy for each axis as applicable;
# Description of grid resolution;
# Drawing and / or figure scale identified as applicable;
# Contours presented at minimum 0.5 m increments;
# Orthophoto Elevation Data i.e. study area break lines and DTM points;
# LIDAR Elevation Data i.e. study area point cloud (as applicable);
# Digital Elevation Model (DEM) as applicable;
# Description of modifications to surface including adjustments to the TIN from other sources (i.e. surveyed culverts, new infrastructure invert and obvert elevations etc.);
# Flood limit data;
# Drawings and / or figures to be submitted both electronically and in hard copy when requested;
# In modelling files and documentation to maintain existing watercourse naming conventions were applicable;
# Projected Co-ordinate system: Preferably NAD 1983 UTM Zone 17N;
# Accepted Original Geospatial Data file format: File Geodatabase or Shapefiles; and
# Submission components to be stamped and signed by an OLS, P.Eng. or C.E.T. as relevant.