Upper West Side — Parsed SWM Report

Credit scorecard — Hamilton bylaw

Each category awards a maximum percentage of the annual stormwater charge as credit. Evidence is extracted directly from the source PDF — no manual review.

✓On-site controls

documented source control on the site

50%

—Lake Ontario green-space bonus

direct discharge + green-space parcel flag (90% tier) — not documented

Net credit

50% baseline; up to 90% with Lake Ontario direct-discharge + green-space flag

50%

Pre vs post peak discharge

Storm event	Pre-dev (m3/s)	Post-dev (m3/s)	Δ
Multiple (2-yr To 100-yr)	1.88	14.12	+651%

Stormwater controls (6)

Dry detentionSWM Facility S5

Storage volume53,320.0 m³

Treatment volume9,214.0 m³

Total tributary area 81.7 ha, 55% impervious, composite runoff coefficient 0.55, pre-development peak flow 1.88 m3/s, post-development peak flow 14.12 m3/s. Dry pond, no permanent pool. Extended detention required/provided 9,214 m3; attenuation required/provided 44,106 m3. Total provided (excl. freeboard) 53,320 m3.

Dry detentionEnd-of-pipe Dry Ponds (general AEGD)

Flood control target for AEGD = 303-438 m3/ha. Fifteen SWM facilities (6 SWM ponds and 8 storage tanks) proposed. No permanent pool required. Erosion control: 15mm runoff volume released over 24hr detention time.

InfiltrationLID Source Controls (infiltration)

LID capture targets range from 60-130 m3/imp ha depending on land use and soil type. 29mm infiltration/retention target referenced for ponds. 10mm minimum water quality infiltration target.

SwaleLID Conveyance Controls (bioswales/grassed swales)

LID conveyance controls including bioswales referenced as part of treatment train approach (Alternative 6).

BioretentionBioretention facilities

Referenced in QualHymo model as Special Bioretention and Bioretention facilities as LID source controls.

Rainwater harvesting / reuseCistern / Rainwater Harvesting

Main building roof drained to cistern for rainwater harvesting; contents used for outdoor irrigation. Modelled in QualHymo for 20 ha Prestige Business Park site plan example.

Best management practices (13)

Dry pond end-of-pipe controlsLID source controlsLID conveyance controlsBioretentionBioswaleGrassed swalesInfiltration trench and galleriesPermeable pavementGreen roofsSoakaway pitsCistern / Rainwater HarvestingStream restoration (riparian plantings)Underground storage tanks

Site characteristics & report metadata

ProjectUpper West Side Secondary Plan - Subwatershed Study and Stormwater Master Plan Overview Report

Project typeSubdivision

DeveloperUpper West Side Landowners Group

Existing land useagricultural

Proposed land useindustrial/commercial (Airport Related Business, Light Industrial, Airside Industrial, Prestige Business Park)

Water balance capture10.0 mm

TSS removal target80%

Quality control methodLID source controls (infiltration, bioretention, rainwater harvesting) and LID conveyance controls (bioswales, grassed swales) in treatment train approach; minimum 10mm infiltration for water quality; 80% TSS removal target (Enhanced Level 1 MOE)

Extraction audit

Confidence: high Completeness: 83% Source: 115-page PDF Extractor: PARCELFLOW v1 Validation: passed

How to read this page. Every value above was extracted from the source PDF by the PARCELFLOW report parser, which combines a layout-robust template detector with a validated extraction stage tuned to Ontario Functional Servicing and Stormwater Management reports. The four-category scorecard maps the parsed evidence onto Mississauga's credit bylaw. Numbers are estimates — engineering review still required before submitting a formal credit application to the City.