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
only some design storms documented
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
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 (m3/s) | Post-dev (m3/s) | Δ |
|---|
| 10-yr | 0.046 | 0.046 | +0% |
| 100-yr | 0.081 | 0.026 | −68% |
Stormwater controls (3)
Underground storageConcrete Cistern / Underground Storage Tank
Storage volume89.0 m³
Treatment volume89.0 m³
Outletorifice
100-yr HGL80.78 m
Active storage provided = 89 m³, required = 80.64 m³. Dead storage provided = 26.15 m³, required = 16.5 m³. Tank area = 87.18 m², height = 1.32 m. 100 mm orifice tube proposed. Tank to be pumped. Located within underground parking garage.
Oil-grit separatorOGS1 - Stormceptor EFO4
Located downstream of storage tank within parking garage. Provides 91% estimated net annual TSS load reduction. Target TSS removal 80%. Upstream orifice control flow rate = 26 L/s. Drainage area = 0.28 ha.
SwaleTemporary Swale
Temporary swale to be removed upon final park grading. Referenced on grading plan.
Best management practices (4)
Underground storage tank (concrete cistern)Stormceptor EFO4 oil-grit separatorTemporary swale5 mm retention for reuse
Site characteristics & report metadata
Project10 West - 17 & 19 Ann Street, 84 & 90 High Street
Project typeRedevelopment
Developer10 West GO GP Inc.
PermitOZ OPA 22-3
Existing land useresidential
Proposed land usehigh-density residential (23-storey)
Site area0.33 ha
Water balance capture5.0 mm
TSS removal target80%
Allowable release rate46.0 L/s
Quality control methodOil-grit separator (Stormceptor EFO4) downstream of underground storage tank providing minimum 80% TSS removal (Enhanced Level 1)
Extraction audit
Confidence: high
Completeness: 92%
Source: 92-page PDF
Extractor: PARCELFLOW v1
Validation: passed
Source PDF: Functional-Servicing-and-Stormwater-Report%E2%80%93OZOPA-22-3-W1%E2%80%93August-2024.pdf (92 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.