1000 & 1024 Dundas Street East — Parsed SWM Report

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

discharge reduction — not documented

✓Water Quality

TSS removal 92% (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

Net credit

Capped at 50% of annual stormwater charge

40%

Pre vs post peak discharge

Storm event	Pre-dev (m3/s)	Post-dev (m3/s)	Δ
2-yr	0.07	0.114	+63%
5-yr	0.07	0.153	+119%
10-yr	0.07	0.189	+170%
25-yr	0.07	0.238	+240%
50-yr	0.07	0.29	+314%
100-yr	0.07	0.33	+371%

Stormwater controls (6)

Underground storageSWM Detention Tank (P2)

Storage volume300.0 m³

Outletorifice

Outlet invert119.15 m

100-yr HGL114.58 m

Located at P2 parking level (FF 114.95+/-). Tank dimensions: 3m H x 10m W x 10m L. Bottom of tank at 111.95+/-. Water returned via pump to P1 diversion/retention tank. 100-year water level = 114.58+/-.

Underground storageSWM Retention/Diversion Tank (P1)

Storage volume30.0 m³

Treatment volume30.0 m³

Outletorifice

Outlet invert119.15 m

Located at P1 parking level (FF 118.05+/-). Required volume = 29.2 m3 (report text) / 29.9 m3 (drawing). Provided volume = 30 m3. Dimensions: 1.1m H x 4.7m W x 5.8m L. Diversion weir invert 119.64. Used for greywater reuse.

Oil-grit separatorStormceptor EF06

Outletpipe

Outlet invert119.68 m

Imbrium Stormceptor EF06 (or approved equivalent). Provides 82% TSS removal and treats >90% of annual flows. RIM elevation 120.70, E INV IN 119.70, S INV OUT 119.68. Estimated water quality flow rate 23.23 L/s.

Green roofGreen Roof

Surface area0.053 ha

Green roof area: 535 m2. Assists with rainfall retention via initial abstraction and evapotranspiration. Provides 100% TSS removal for that catchment area.

Rainwater harvesting / reuseGreywater Reuse System

Storage volume30.0 m³

Outletother

Grey water reuse for landscape irrigation and potentially toilets. Irrigation demand estimated at 4.1 m3/day in peak month of July. Supplementary building greywater systems to be explored with mechanical consultant.

SwaleTemporary Swales with Check Dams (ESC)

Temporary erosion and sediment control measure during construction only.

Best management practices (10)

Stormceptor EF06 oil/grit separatorGreen roof (535 m2)Underground detention tank (P2)Underground retention/diversion tank (P1)Greywater reuse systemFlow attenuation device (orifice tube)Silt fence/wattleCatchbasin sediment protectionStabilized construction entranceTemporary swales with check dams

Site characteristics & report metadata

Project1000 & 1024 Dundas Street East Development

Project typeRedevelopment

DeveloperAhmed Developments Inc.

Existing land usecommercial/urban (hard surfaces)

Proposed land usemixed-use residential/commercial (16-storey and 20-storey towers with podiums)

Site area0.84 ha

Impervious86% (pre) → 81% (post)

Water balance capture5.0 mm

TSS removal target92%

Allowable release rate70.0 L/s

Quality control methodoil-grit separator (Stormceptor EF06) as primary treatment, supplemented by green roof and soft landscape areas

Extraction audit

Confidence: high Completeness: 100% Source: 81-page PDF Extractor: PARCELFLOW v1 Validation: passed

Source PDF: W1_1000_1024_Functional_Servicing_and_Stormwater_Report_Sept2022.pdf (81 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.