Built to spec
Built to your engineered drawings, survey, and the real site conditions, not a standard package forced to fit.
Oil-Grit Separators are underground treatment devices installed to remove sediment, oil, and debris from stormwater runoff. Harrowgate Group self-performs the work to your engineered drawings, load, and finish, and completes it on site across St. Catharines, the GTA, and Ontario.
Tell us what you need and we’ll get you a quote. Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Built to your engineered drawings, survey, and the real site conditions, not a standard package forced to fit.
Heavy-duty steel and finishes chosen for the load, traffic, and environment on site.
Send specs, drawings, or photos and get a free, no-obligation site visit and estimate with no guesswork.
Installation and site work completed in accordance with Ontario requirements.
Oil-Grit Separators are underground treatment devices installed to remove sediment, oil, and debris from stormwater runoff. Harrowgate Group builds oil-grit separators across St.
In St. Catharines, oil-grit separators are typically needed for commercial sites, lots, and municipal drainage. Treating stormwater to meet water quality requirements are the recurring drivers; each St. Catharines project is sized to its own situation, not a one-size approach.
Demand for oil-grit separators in St. Catharines (Niagara Region) comes mostly from manufacturing and automotive, institutional and healthcare, commercial, and canal and marine infrastructure. St. Catharines anchors the Niagara industrial and institutional market along the Welland Canal, with manufacturing, healthcare, and college campuses. Work spans industrial site work, servicing, canal-adjacent civil, and commercial construction.
Activity clusters in the Welland Canal corridor, the industrial and business parks, and the hospital and college campuses. Harrowgate Group regularly builds oil-grit separators for St. Catharines clients like manufacturers, institutions, and the City of St. Catharines, each project carrying its own site and requirements.
The mix in St. Catharines, manufacturing and automotive, institutional and healthcare, commercial, and canal and marine infrastructure, means each oil-grit separators project starts from the specific structure, not a template, when Harrowgate Group scopes it.
St. Catharines conditions shape the response: Welland Canal and marine works, mixed older industrial stock, and institutional-campus growth. So Harrowgate Group matches the methods, materials, and equipment to the site, and a St. Catharines project rarely needs the same approach as a standard property.
On St. Catharines oil-grit separators, Harrowgate Group moves where it counts: fast mobilization, a crew and equipment set to the schedule, and the project built to the engineered plan and inspected as it goes.
A St. Catharines oil-grit separators project moves through survey, site prep, the built work, and restoration, each step verified against the engineered plan and the applicable codes before the crew moves on.
The right St. Catharines oil-grit separators outcome depends on the right people at the table. Harrowgate Group builds to the structural and civil engineers' spec, respects the architect's intent, coordinates surveyors and consultants, and works with municipal planning and inspection, carrying the St. Catharines project from stamped drawings through to a documented, approved result.
On a typical St. Catharines project the oil-grit separators work covers commercial sites, lots, and municipal drainage around the Welland Canal corridor and clients like manufacturers, each scoped to its own situation and recorded for the file. Harrowgate Group also serves nearby Niagara Falls, Welland, Thorold, so projects spanning the surrounding area stay with one team.
Harrowgate Group builds St. Catharines oil-grit separators to code and to drawing: sequenced correctly, compacted or finished to the specified result, and documented so owners, GCs, engineers, and inspectors get exactly what was agreed.
Across St. Catharines, owners call Harrowgate Group for oil-grit separators for a simple reason: licensed, insured, and fully WSIB-covered work, fast mobilization, and a crew that actually knows the Welland Canal corridor, the industrial and business parks, and the hospital and college campuses and how local buildings fail.
Self-performed on site to the engineered drawings, coordinated with concrete, servicing, and the surrounding work, then a clean, documented finish.
In short: Oil-Grit Separators are underground treatment devices installed to remove sediment, oil, and debris from stormwater runoff. For St. Catharines projects, it's built to the engineered drawings and the applicable codes, self-performed on site.
Yes, we respond across St. Catharines and the surrounding area. Response time is fast mobilization.
Across St. Catharines, the work concentrates around the Welland Canal corridor, the industrial and business parks, and the hospital and college campuses, each job scoped to its own conditions.
Mostly manufacturing and automotive, institutional and healthcare, commercial, and canal and marine infrastructure, Harrowgate Group serves developers, contractors, municipalities, and property owners across St. Catharines.
In St. Catharines, the work accounts for Welland Canal and marine works, mixed older industrial stock, and institutional-campus growth, so the methods, materials, and equipment is matched to the site.
Stormwater treatment. For St. Catharines, every project is sized to the actual conditions.
Harrowgate Group responds to St. Catharines with fast mobilization, covering the Welland Canal corridor, the industrial and business parks, and the hospital and college campuses and the surrounding area.
All of St. Catharines, the Welland Canal corridor, the industrial and business parks, and the hospital and college campuses and the surrounding neighbourhoods, plus nearby Niagara Falls, Welland, Thorold.
Yes, Harrowgate Group handles manufacturing and automotive, institutional and healthcare, commercial, and canal and marine infrastructure across St. Catharines, from focused scopes to full builds, each set to its own site and drawings.
Cost depends on the site conditions, the ground, the scope, and the engineered requirements, Harrowgate Group reviews the drawings and the site for each St. Catharines project and provides a clear, documented quote.
Yes, Harrowgate Group assesses St. Catharines oil-grit separators on site and provides a documented scope before any work begins.
Real knowledge of St. Catharines, the Welland Canal corridor, the industrial and business parks, and the hospital and college campuses, fast mobilization, work that is licensed, insured, and fully WSIB-covered, and full documentation on every project.
Harrowgate Group has served Niagara Region since 2006, 20 years of hands-on experience.
Harrowgate Group surveys and scopes it on site, builds the work to the engineered drawings and the applicable codes, and completes it to grade, handled by one accountable team across St. Catharines.
Yes, Harrowgate Group builds the work across St. Catharines and the surrounding area and manages it end to end, coordinating any engineers, consultants, and municipal approvals the project needs. We do the work, not just hand it off.
Commercial and heavy-civil construction, self-performed for developers, contractors, property managers, and municipalities.
Send drawings, a site plan, or a description of the scope. Harrowgate Group is licensed, insured, and WSIB certified.
Licensed, Insured & WSIB Certified · Self-performed and documented on every job
Tell us what you need and we’ll get you a quote. Licensed, insured & WSIB certified · Free, no-obligation quote & on-site assessment.
Harrowgate Group provides oil-grit separators, delivered and installed with quote-ready support across Toronto and surrounding Ontario communities.
Companies We've Worked With
Harrowgate Group delivers commercial and heavy-civil construction for developers, contractors, institutions, municipalities, and property groups across Ontario.