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
discharge reduction — not documented
0%
✓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
combinable O&A sub-credits — not documented
0%
Net credit
Capped at 50% of annual stormwater charge
40%
Pre vs post peak discharge
| Storm event | Pre-dev (m3/s) | Post-dev (m3/s) | Δ |
|---|
| 2-yr | 0.136 | 0.136 | +0% |
| 2-yr | 0.04 | 0.04 | +0% |
Stormwater controls (8)
Underground storageBuilding A SWM Tank
Storage volume188.0 m³
Treatment volume31.0 m³
Outletorifice
Outlet invert100.33 m
100-yr HGL102.33 m
Depth 2.0m; orifice diameter 130mm; retention 31.0m3; serves STREET + BLD A drainage area
Underground storageBuilding B SWM Tank
Storage volume148.0 m³
Treatment volume24.5 m³
Outletorifice
Outlet invert100.46 m
100-yr HGL102.46 m
Depth 2.0m; orifice diameter 115mm; retention 24.5m3; serves BLD B drainage area
Underground storageBuilding C SWM Tank
Storage volume145.0 m³
Treatment volume24.0 m³
Outletorifice
Outlet invert100.29 m
100-yr HGL103.29 m
Depth 3.0m; orifice diameter 100mm; retention 24.0m3; serves BLD C + EXT2 drainage area
Underground storageParking Lot SWM Tank
Storage volume103.0 m³
Treatment volume17.0 m³
Outletorifice
Outlet invert100.25 m
100-yr HGL100.75 m
Tank depth 0.5m; orifice diameter 140mm; retention 17.0m3; serves PKNG drainage area
Underground storageFuture ROW SWM Tank
Storage volume54.0 m³
Outletorifice
Outlet invert99.52 m
100-yr HGL102.02 m
Tank depth 2.5m; orifice diameter 200mm; serves ROW1 + FUTROW drainage area
SwaleBioswales (North and South along Private Street A / Future ROW)
Four bioswales proposed in Block 6 (future municipal ROW); TSS removal 75% per STEP LID Treatment Train Tool; also used to meet 5mm water balance requirement
Oil-grit separatorOGS-1
OGS provided for each development block prior to runoff entering storage tanks; OGS-P also shown; 50% TSS removal credited per STEP LID tool
BioretentionBioretention (LID option for development blocks)
Feasible LID option; 75% TSS removal per STEP LID Treatment Train Tool; to be finalized at Site Plan approval stage
Best management practices (8)
underground storage tanksoil-grit separators (OGS)bioretentiongrassed swalespermeable pavementgreen roofsbioswalesrainwater harvesting for irrigation reuse
Site characteristics & report metadata
ProjectDixie Mall Redevelopment
Project typeRedevelopment
DeveloperSlate Asset Management
Existing land usecommercial (outlet mall with surface parking)
Proposed land usemixed residential (mid-rise and tower), park, and municipal ROW
Site area2.70 ha
Water balance capture5.0 mm
TSS removal target80%
Allowable release rate83.2 L/s
Quality control methodoil-grit separators for each development block + LID measures (bioretention, grassed swales, permeable pavement, green roofs) for 80% TSS removal; bioswales and OGS in future municipal ROW
Extraction audit
Confidence: high
Completeness: 83%
Source: 52-page PDF
Extractor: PARCELFLOW v1
Validation: passed
Source PDF: Functional-Servicing-and-Stormwater-Management-Report-may-2024.pdf (52 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.