Common stormwater comments ask the consultant to make the design basis traceable and consistent. Reviewers need to see where criteria came from, how calculations support the controls, and whether the report agrees with the grading and servicing drawings.
Criteria and calculation comments
Typical questions concern the allowable release rate, design storms, rainfall data, runoff parameters, water-quality target, water-balance approach and treatment credit. Reviewers may request clearer drainage-area plans, pre- and post-development comparisons, storage calculations, outlet-control details or supporting model output.
If infiltration is proposed, comments may seek geotechnical or hydrogeological support, seasonal groundwater information, separation distances and maintenance provisions.
Drawing and coordination comments
Plans may need to show ponding limits and depths, emergency overflows, major flow arrows, spill elevations, inlet elevations and the receiving outlet. Conflicts arise when the report uses one catchment area but the latest site or landscape plan shows another.
For parks, reviewers may also ask whether fields, dog areas, paths or play spaces are being used for storage; how quickly they drain; and how operational water from splash pads or wash-down is separated from rainfall runoff.
Bous Engineering prepares and revises Stormwater Management Reports with coordinated calculation and drawing checks. Read how municipal comments are addressed and when on-site storage may be required for related detail.
Key takeaway
A strong resubmission answers the technical question and improves how the evidence is presented. Update the report, calculations, drawings and response matrix together so the reviewer can verify the revised design efficiently.
Bous Engineering supports servicing, stormwater, grading and municipal approval assignments across Eastern Ontario.