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 6%
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 | — | 56 | — |
| 5-yr | — | 77 | — |
| 10-yr | — | 97 | — |
| 25-yr | — | 112 | — |
| 50-yr | — | 126 | — |
| 100-yr | 149 | 140 | −6% |
Stormwater controls (4)
Wet detention pondSWM Pond
Storage volume2,650.0 m³
Outletcompound weir
100-yr HGL180.36 m
Wet pond with drainage area of 3.45 ha and average imperviousness of 58.9%. Outlet control structure includes 80 mm extended detention orifice plate and 170 mm orifice plate for up to 100-year control. Emergency spill weir at elevation 180.70 m (10 m wide). 0.3 m freeboard provided between 180.70 m and 181.00 m. Storage at ED stage: 713 m3 at elevation 179.80 m; storage at 100-year: 1590 m3 at elevation 180.36 m.
InfiltrationInfiltration Chamber
Storage volume102.7 m³
Treatment volume102.7 m³
Outletoverflow
Upstream of SWM pond. Required volume 101.4 m3, provided volume 102.7 m3. Captures and infiltrates the 5 mm rain event. Overflow discharges to downstream sewers and into pond forebay.
Oil-grit separatorImbrium Jellyfish Unit
Offline pretreatment unit placed upstream of the infiltration system to pretreat stormwater prior to infiltration.
SwaleProposed Swale
Referenced in grading plan legend and report as a proposed stormwater conveyance feature.
Best management practices (5)
Wet PondInfiltration ChamberImbrium Jellyfish Unit (Oil-Grit Separator)SwaleForebay
Site characteristics & report metadata
ProjectSt. Mark and St. Demiana Coptic Orthodox Church - 3475 Ninth Line
Project typeNew
DeveloperSt. Mark and St. Demiana Coptic Orthodox Church
Existing land usevacant
Proposed land useplace of worship / institutional
Site area3.55 ha
Water balance capture5.0 mm
TSS removal target80%
Allowable release rate191.0 L/s
Quality control methodwet pond with forebay, offline Imbrium Jellyfish Unit pretreatment, and upstream infiltration system
Extraction audit
Confidence: high
Completeness: 92%
Source: 158-page PDF
Extractor: PARCELFLOW v1
Validation: passed
Source PDF: OZ-20-16-W8-functional-servicing-and-stormwater-management-report-december-2024.pdf (158 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.