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 43%
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 (L/s) | Post-dev (L/s) | Δ |
|---|
| 2-yr | 213.6 | — | — |
| 5-yr | 287.1 | — | — |
| 10-yr | 353.6 | — | — |
| 25-yr | 406.1 | — | — |
| 50-yr | 453.3 | — | — |
| 100-yr | 501.7 | 287 | −43% |
Stormwater controls (3)
Underground storageStormwater Management Tank
Storage volume350.0 m³
Treatment volume214.0 m³
Outletorifice
Outlet invert132.04 m
100-yr HGL134.10 m
Tank area 170.0 m2; 300 mm orifice tube; minimum freeboard 0.30 m; located within P1 underground parking level; controlled release rate 287.0 L/s for 100-year event
Rainwater harvesting / reuseRainwater Retention Tank
Located adjacent to stormwater management tank within P1 underground parking level; required retention volume 72.85 m3 total (25.31 m3 via initial abstraction + 47.54 m3 in tank); water reused for building functions
OtherFiltration Unit
Downstream of stabilization manhole; designed to provide >= 80% TSS removal; specifications to be provided at detailed design stage
Best management practices (6)
Stormwater Management TankOrifice Tube Flow ControlStabilization ManholeFiltration UnitRainwater Retention TankInitial Abstraction
Site characteristics & report metadata
Project3403-3445 Fieldgate Drive Mixed-Use Development
Project typeRedevelopment
DeveloperForest Glen Shopping Centre Ltd.
PermitOPA & ZBA
Existing land usecommercial
Proposed land usemixed-use residential and commercial
Site area1.58 ha
Water balance capture5.0 mm
TSS removal target80%
Allowable release rate353.6 L/s
Quality control methodfiltration unit downstream of stabilization manhole providing >= 80% TSS removal
Extraction audit
Confidence: high
Completeness: 83%
Source: 151-page PDF
Extractor: PARCELFLOW v1
Validation: passed
Source PDF: oz-opa-25-1-w3-Functional-Servicing-and-Stormwater-Management-Report-january-2025-january-2025.pdf (151 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.