Parsed SWM report

2403 Khalsa Gate

Proposed Sikh Temple Addition · Redevelopment · 2025-06-01

Consultant: Trafalgar Engineering Ltd. Engineer: J.T. Nelson, P.Eng. P.Eng sealed Model: UNKNOWN Revision: Rev 2
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 eventPre-dev (L/s)Post-dev (L/s)Δ
2-yr234357+53%
5-yr325495+52%
10-yr384583+52%
25-yr509772+52%
50-yr623936+50%
100-yr7151,037+45%
Stormwater controls (5)
Underground storageStormbrixx System
Storage volume392.3 m³
Outletorifice

Online storage connected to storm sewer system; 300mm orifice tube on east inlet to existing property line manhole; controls flow to 5-year pre-development release rate

OtherControl-Flow Roof Drains (Zurn ZCF121)
Storage volume128.7 m³
Outletother

Two control flow roof drains; 100-yr max release rate 6.0 L/s; maximum ponding depth 150mm on roof area of 2535 m2

Oil-grit separatorStormceptor EFO10
Outletpipe

Upstream of Stormbrixx system; provides 62% TSS removal; EFO model selected for oil/fuel spill risk site

Oil-grit separatorStormceptor 750 (existing)
Outletpipe

Existing unit at southwest corner of property; assumed 60% TSS removal; viability to be confirmed at site plan stage

SwaleSouth Swale
Outletother

Existing swale on south property limit modified to fit within proposed swale buffer; handles external drainage area of approx. 144 m2; 100-yr flow 0.029 m3/s; drains to ditch inlet manhole connecting to existing CSP culvert

Best management practices (6)
Stormbrixx underground storage systemControl-flow roof drains (Zurn ZCF121)Stormceptor EFO10 oil-grit separatorStormceptor 750 oil-grit separatorSouth swaleSediment control fence
Site characteristics & report metadata
ProjectProposed Sikh Temple Addition
Project typeRedevelopment
DeveloperOakville Gurdwara
Existing land useplace of worship with asphalt parking and auxiliary buildings
Proposed land useplace of worship (Sikh Temple addition) with parking lot
Site area1.84 ha
Impervious58% (pre) → 76% (post)
Water balance capture25.0 mm
TSS removal target85%
Allowable release rate324.0 L/s
Quality control methodTwo oil-grit separators (Stormceptor EFO10 upstream and existing Stormceptor 750 downstream) in series treatment train
Extraction audit
Confidence: high Completeness: 100% Source: 51-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.