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A shopping center, grocery store, clinic, or office building parking lot often exceeds 1,000 m\u00b2 of asphalt. During new construction, expansion, or major renovation, Bylaw 20-030 applies. Stormwater management solutions must be integrated from the design phase: bioretention islands between parking rows, vegetated swales along the perimeter, permeable pavers for pedestrian walkways.<\/p>\n\n\n\n
Case 2: Industrial and Commercial Building Roofs<\/p>\n\n\n\n Warehouses, factories, and commercial buildings with flat roofs represent considerable impermeable surfaces. Combined with loading areas and employee parking, they frequently exceed the regulatory threshold. Options include underground or surface retention basins, draining roofs, and landscaping designed to capture and infiltrate runoff<\/p>\n\n\n\n The SRGE verifies the compliance of each project. Any incomplete or non-compliant application extends authorization delays and generates additional costs for the property owner. According to Article 122, you have 60 days to correct a non-compliant application, after which it may be rejected. Our engineering team has developed specific expertise in stormwater management for large impermeable surfaces. We design solutions adapted to the real constraints of these projects: heavy vehicle traffic, limited space, snow removal requirements, integration with existing developments. Whether you are the owner of a commercial parking lot, an industrial warehouse, or a developer of a new project, our engineering team is ready to support you. We transform your regulatory obligations into green, sustainable, and high-performing developments.<\/p>\n","protected":false},"excerpt":{"rendered":" The Problem: Surfaces That Prevent Water Infiltration Commercial parking lot paving, warehouse flat roofs, industrial building roofs, concrete loading areas \u2014 all these impermeable surfaces share one thing in common: they prevent rainwater from naturally infiltrating into the soil. The result: runoff accumulates, overloads municipal sewer systems, and contributes to urban flooding and backups. It […]<\/p>\n![\"\"](\"https:\/\/www.avizo.ca\/wp-content\/uploads\/2026\/02\/GettyImages-1203020314.jpg\")
Consequences of an Incomplete Application<\/h2>\n\n\n\n
Additionally, within 60 days following completion of stormwater management system construction work, “as-built” final plans must be submitted to the SRGE.<\/p>\n\n\n\nAvizo’s Expertise in Stormwater Management<\/h2>\n\n\n\n
Our solutions:
\u2022 Rooftop retention \u2014 applicable to new construction
\u2022 Bioretention islands \u2014 integrated into parking lot islands to capture, filter, and infiltrate runoff
\u2022 Vegetated swales \u2014 along paved areas to naturally slow and treat water
\u2022 Retention basins \u2014 underground or surface, adapted to large industrial sites
\u2022 Draining roofs and permeable surfaces \u2014 to reduce runoff directly at the source
Our services:
\u2713 Stormwater management master plan \u2014 comprehensive planning required for multi-phase projects or institutional buildings
\u2713 Hydraulic and hydrological study and modeling \u2014 calculation of runoff flows generated by your parking lot or industrial roof
\u2713 Design of plans and specifications \u2014 retention structures sized for your site and integrated into your developments
\u2713 SRGE application preparation \u2014 complete and compliant application to avoid delays and rejections<\/p>\n\n\n\nTake Action<\/h2>\n\n\n\n