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 62%
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 | 99.35 | 44.32 | −55% |
| 5-yr | 128.98 | 54.21 | −58% |
| 10-yr | 158.86 | 62.97 | −60% |
| 25-yr | 200.7 | 72.82 | −64% |
| 50-yr | 244.4 | 84.4 | −65% |
| 100-yr | 291.73 | 94.72 | −68% |
Stormwater controls (3)
Underground storageCupolex Underground Concrete Storage Tank
Storage volume856.3 m³
Outletorifice
Outlet invert167.71 m
100-yr HGL169.51 m
125 mm orifice tube; Cupolex Rialto H.1800 mm forming system; inside tank area 513 m2; system depth 1800 mm; controls 100-yr post-development flow to 2-yr pre-development flow rate
InfiltrationPermeable Pavers (Ecoraster)
Storage volume129.8 m³
Surface area0.130 ha
Outletother
1298 m2 area; 250 mm bedding depth; 0.4 void ratio clear stone; provides water balance retention volume of 129.8 m3 against requirement of 117.9 m3
OtherUp-Flo Filtration System
Up-Flow filtration system downstream of underground chamber; provides 80% TSS removal (MOECP Enhanced Level of Protection)
Best management practices (4)
Cupolex Underground Concrete Storage TankUp-Flo Filtration SystemPermeable Pavers (Ecoraster)125 mm Orifice Tube
Site characteristics & report metadata
Project3855-3915 Dundas Street West Mixed Industrial, Commercial, and Self-Storage Development
Project typeNew
DeveloperDymon Group of Companies
Existing land usevacant
Proposed land usemixed industrial, commercial, and self-storage
Site area2.39 ha
Impervious0% (pre) → 58% (post)
Water balance capture5.0 mm
TSS removal target80%
Allowable release rate99.3 L/s
Quality control methodUp-Flo filtration system (up-flow filter) downstream of underground detention tank providing 80% TSS removal
Extraction audit
Confidence: high
Completeness: 100%
Source: 59-page PDF
Extractor: PARCELFLOW v1
Validation: passed
Source PDF: Functional-Servicing-and-Stormwater-Management-Report-October-2023.pdf (59 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.