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
pre-vs-post controlled across multiple storms; avg reduction 68%
40%
✓Water Quality
TSS removal 93% (enhanced)
30%
✓Runoff Volume
water balance retains 5 mm on site (2% per mm, max 30% at 15 mm)
30%
—Operations
combinable O&A sub-credits — not documented
0%
Net credit
Capped at 50% of annual stormwater charge
50%
Pre vs post peak discharge
| Storm event | Pre-dev (L/s) | Post-dev (L/s) | Δ |
|---|
| 2-yr | 31.05 | — | — |
| 5-yr | 41.74 | — | — |
| 10-yr | 51.41 | — | — |
| 25-yr | 64.96 | — | — |
| 50-yr | 79.1 | — | — |
| 100-yr | 91.9 | 29.2 | −68% |
Stormwater controls (3)
Underground storageSWM Tank #1
Storage volume204.0 m³
Outletpipe
Pump-based discharge to Fowler Drive 1200mm storm sewer at max 16.5 L/s; located outside below-grade building walls; emergency overflow hatch to N. Sheridan Way ROW
Underground storageSWM Tank #2
Storage volume37.7 m³
Outletorifice
60mm diameter orifice plate; controls 1980 Fowler Drive drainage at max 12.7 L/s to Fowler Drive storm sewer; located in landscaped area between parking lot and Fowler Drive ROW
Oil-grit separatorOGS
Oil/grit separator upstream of SWM tank outlet; sized for 80% TSS removal of contributing vehicular area (0.476 ha); details to be provided at SPA stage
Best management practices (4)
Underground SWM Tank #1 with pumpUnderground SWM Tank #2 with orifice controlOil-Grit Separator (OGS)Rainwater reuse/irrigation for water balance
Site characteristics & report metadata
Project1970-1980 Fowler Drive Official Plan Amendment and Zoning Bylaw Amendment
Project typeRedevelopment
DeveloperIMH 1970 & 1980 Fowler Drive Ltd.
Existing land useresidential (apartment buildings with surface and underground parking)
Proposed land usehigh-density residential (24-storey apartment building)
Site area0.51 ha
Water balance capture5.0 mm
TSS removal target93%
Allowable release rate29.2 L/s
Quality control methodoil-grit separator (OGS) downstream of SWM tank treating vehicular area runoff; rooftop and landscape areas considered clean with 80% TSS removal inherent
Extraction audit
Confidence: high
Completeness: 83%
Source: 54-page PDF
Extractor: PARCELFLOW v1
Validation: passed
Source PDF: Functional-Servicing-Stormwater-Management-Report-OZ-OPA-25-23-W8-April-2026.pdf (54 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.