1295 Sixth Line — Parsed SWM Report

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

—Basic SWM (≥60% TSS)

Provincial Basic — meets minimum — not documented

Net credit

Up to 50% for non-residential with SWM exceeding minimum design standards

50%

Pre vs post peak discharge

Storm event	Pre-dev (L/s)	Post-dev (L/s)	Δ
5-yr	41.3	18.2	−56%
25-yr	58.7	35.2	−40%
100-yr	72.6	35.4	−51%

Stormwater controls (6)

Underground storageGreenstorm Geocellular/Bottomless SWM Chamber

Storage volume80.0 m³

Treatment volume90.0 m³

Outletorifice

Outlet invert125.91 m

100-yr HGL128.24 m

95 mm diameter orifice; actual release rate 37.9 L/s (preliminary design uses 35.4 L/s); bottomless/perforated to allow infiltration; positioned above highest observed groundwater; max drawdown 72 hours; product by Stormcon

InfiltrationGreenstorm Bottomless Chamber Infiltration

Storage volume90.0 m³

Outletoverflow

Infiltration of 25 mm storm event per Town of Oakville 2024 water balance standard; 87.4 m3 required, 90 m3 provided; treated prior to infiltration via OGS upstream

Oil-grit separatorOil Grit Separator (OGS)

Positioned upstream of underground SWM chamber; ETV certified; sized for required particle size distribution by manufacturer; achieves 80% TSS removal

SwaleLID Swales with Enhanced Planting

Low Impact Development swales with enhanced planting as part of grading design

OtherAbove Ground Storage at Low Points

Storage volume4.0 m³

Above ground storage at various low points within paved areas

OtherOversized Storm Sewer Storage

Storage volume6.0 m³

Outletpipe

Storage within site storm sewer system using oversized sewers

Best management practices (9)

Oil Grit Separator (OGS)Underground geocellular/bottomless SWM chamber (Greenstorm by Stormcon)LID swales with enhanced plantingRoof leaders directed to softscape/landscaping for natural infiltrationOversized storm sewers for storageAbove ground storage at low pointsCatchbasin silt sacks (construction ESC)Silt fencing (construction ESC)Mud mat (construction ESC)

Site characteristics & report metadata

Project1295 Sixth Line, Oakville

Project typeRedevelopment

DeveloperCreditmills Development Group

Existing land useresidential (single unit with driveway)

Proposed land useresidential townhouse (30 units, 3 blocks)

Site area0.38 ha

Impervious13% (pre) → 80% (post)

Water balance capture25.0 mm

TSS removal target80%

Allowable release rate41.3 L/s

Quality control methodoil-grit separator upstream of underground geocellular/bottomless infiltration chamber; roof leaders directed to softscape/landscaping for natural infiltration; LID swales with enhanced planting

Extraction audit

Confidence: high Completeness: 100% Source: 36-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.