Credit scorecard — Oakville 2026 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.
✓Enhanced SWM (≥80% TSS)
Provincial Enhanced — exceeds Oakville minimums
50%
—Normal SWM (≥70% TSS)
Provincial Normal — meets baseline — not documented
0%
—Basic SWM (≥60% TSS)
Provincial Basic — meets minimum — not documented
0%
Net credit
Up to 50% for non-residential with SWM exceeding minimum design standards
50%
Pre vs post peak discharge
| Storm event | Pre-dev (m3/s) | Post-dev (m3/s) | Δ |
|---|
| 100-yr | 1.365 | 1.294 | −5% |
Stormwater controls (3)
Underground storageStormwater Management Vault
Storage volume159.0 m³
Outletorifice
Outlet invert95.53 m
Vault located at P1 parking level; surface area 51.2 m², height 3.1 m; 229 mm diameter orifice plate; 100-year release rate 171 L/s; water reuse sump of 19.6 m³ included for water balance
Oil-grit separatorStormceptor STC750
Located upstream of stormwater management vault; drainage area 0.28 ha, 75% imperviousness; sized to achieve minimum 80% TSS removal (provides 85%); modelled using PCSWMM for Stormceptor with Toronto Central rainfall station
SwaleSwale along CN Rail property line
Proposed to convey external drainage from CN Rail corridor along eastern property line to maintain existing flows to Lower Morrison Creek
Best management practices (4)
Stormceptor STC750 oil-grit separatorUnderground stormwater management vaultWater reuse sumpSwale for external drainage conveyance
Site characteristics & report metadata
ProjectOlde Oakville Development
Project typeRedevelopment
DeveloperFirst Capital Asset Management LP
Existing land usecommercial
Proposed land usemixed-use residential and commercial
Site area5.00 ha
Impervious93% (pre) → 93% (post)
Water balance capture5.0 mm
TSS removal target90%
Allowable release rate171.0 L/s
Quality control methodoil-grit separator (Stormceptor STC750) upstream of stormwater management vault; roof coverage treated as clean with 95% TSS removal
Extraction audit
Confidence: high
Completeness: 100%
Source: 64-page PDF
Extractor: PARCELFLOW v1
Validation: passed
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.