Credit scorecard — Mississauga 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.
✓Peak Flow
only some design storms documented
40%
✓Water Quality
TSS removal 80% (enhanced)
30%
✓Runoff Volume
water balance retains 5 mm on site (2% per mm, max 30% at 15 mm)
30%
✓Operations
BMPs + P.Eng present; sub-credit detection pending — full 20% requires explicit O&A items
20%
Net credit
Capped at 50% of annual stormwater charge
50%
Pre vs post peak discharge
| Storm event | Pre-dev (m3/s) | Post-dev (m3/s) | Δ |
|---|
| 2-yr | 0.176 | 0.022 | −88% |
| 2-yr External | 0.037 | 0.002 | −95% |
| 100-yr | — | — | — |
Stormwater controls (5)
Underground storageTank 1 - Building
Storage volume983.0 m³
Treatment volume75.0 m³
Outletpipe
Located in west portion of building at P1 level of underground parkade. Flows pumped to Hurontario over 24 hours. Drains 1.64 ha including 0.29 ha external area. Active storage 983 m3, quality control storage 75 m3. Target release rate 0.022 m3/s.
Underground storageTank 2 - Road
Storage volume103.0 m³
Outletpipe
Located within proposed municipal road. Drains 0.14 ha. Target release rate 0.002 m3/s.
Oil-grit separatorOGS 1 - EFO6
Stormceptor EFO6, ETC certified. Drainage area 1.35 ha, TSS removal efficiency 82%. Located downstream of Tank 1 on tank outlet. Top of OGS 116.73m, NW invert 114.90m, SW invert 114.80m.
Oil-grit separatorOGS 2 - EFO4
Stormceptor EFO4, ETC certified. Drainage area 0.14 ha, TSS removal efficiency 96%. Located on Tank 2 outlet.
Rainwater harvesting / reuseSWM Tank Sump
Storage volume75.0 m³
Outletother
First 5 mm of rainfall retained on-site for reuse. Volume 74.95 m3 for 1.5 ha site. End use to be determined at detailed design (irrigation). Green roofs also considered as alternative.
Best management practices (5)
Stormceptor EFO6 Oil-Grit SeparatorStormceptor EFO4 Oil-Grit SeparatorUnderground Storage TankRainwater HarvestingGreen Roof
Site characteristics & report metadata
Project3085 Hurontario
Project typeRedevelopment
DeveloperEquity Three Holdings Inc.
PermitOPZ/OPA 22-24
Existing land usecommercial and parking garage
Proposed land usemixed-use residential and commercial
Site area1.50 ha
Water balance capture5.0 mm
TSS removal target80%
Allowable release rate24.0 L/s
Quality control methodoil-grit separator (Stormceptor EFO)
Extraction audit
Confidence: high
Completeness: 92%
Source: 148-page PDF
Extractor: PARCELFLOW v1
Validation: passed
Source PDF: functional-servicing-stormwater-management-report-september-2024-oz-opa-21-11-w7.pdf (148 pages)
Open source PDF →
Starter package
Download credit application package »
10-page PDF: pre-filled Form 2703, starter P.Eng report skeleton, submission checklist. Engineer reviews, adds site inspection + O&M plan, certifies + submits.
Download PDF »
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.