Built to spec
Built to your engineered drawings, survey, and the real site conditions, not a one-size-fits-all approach forced to fit.
Harrowgate Group completes brownfield remediation directly for developers, institutional owners, municipalities, and construction managers across Toronto, the GTA, and Ontario, with the equipment, field controls, documentation, and civil restoration kept under one accountable construction team.
Tell us what you need and we’ll get you a quote. Licensed, insured & WSIB-covered · Free, no-obligation quote & on-site assessment.
Licensed, insured & WSIB-covered · Free, no-obligation quote & on-site assessment.
Built to your engineered drawings, survey, and the real site conditions, not a one-size-fits-all approach forced to fit.
Durable materials and methods 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.
Brownfield remediation prepares previously used land for safe, approvable redevelopment by addressing soil, groundwater, vapour, buried infrastructure, and demolition constraints together. Harrowgate performs the enabling, excavation, treatment, water control, hauling, barrier, backfill, and civil restoration work across Toronto and the GTA under the project's environmental and engineering plans.
Our brownfield remediation sequence starts with verified site information, controlled work zones, and written acceptance points, then moves through field execution, consultant inspection, records, and restoration. We assign each material, asset, sample area, and load a defined status so crews know what can move, what must remain exposed, and who releases the next step.
We begin with survey, utility investigation, environmental zones, demolition limits, soil management areas, truck logistics, and a schedule of sampling hold points. Hard obstructions and former infrastructure are exposed carefully because they can conceal uncharacterized material.
Excavation follows separate source areas and depths, with impacted water kept out of clean storm systems. We install designed caps, liners, vapour layers, monitoring points, or service trench controls before they become inaccessible. Each stage closes with consultant inspection, samples where required, as built records, and protection of the accepted surface.
Our field supervisors keep excavation, water handling, trucking, imported materials, survey, and environmental hold points on the same daily plan. We record quantities, load destinations, unexpected conditions, and completed limits as the work advances. That discipline gives the owner and Qualified Person a clean record of what happened below grade, where it happened, and what remains for acceptance.
Materials and acceptance criteria for brownfield remediation come from the current Ontario requirements, approved drawings, consultant documents, receiving facilities, and owner standards that apply to the actual site. We check those criteria before procurement or hauling, record field changes, and preserve the evidence required for inspection, environmental review, and future construction.
Ontario Regulation 153/04 sets the framework for Phase One and Phase Two ESAs, applicable site condition standards, risk assessment, and RSC evidence. Ontario Regulation 406/19 governs excess soil characterization, tracking, reuse, and related planning where it applies. OBC requirements influence excavation protection, foundations, drainage, and vapour related building details. OPSS materials may govern municipal servicing and road restoration. The actual construction criteria come from the accepted remedial plan, risk management measures, geotechnical report, civil drawings, and agency approvals.
Ontario Regulation 153/04 governs the assessment and evidence used for many Records of Site Condition. The applicable numerical standard depends on property use, groundwater use, soil texture, depth, and whether the project follows generic or accepted risk based criteria. We execute to the Qualified Person's written criteria and preserve traceability. Ontario Regulation 406/19 and the Rules for Soil Management apply when excavated soil becomes excess soil.
Brownfield Remediation fails when field production gets ahead of characterization, isolation, inspection, or documentation. Harrowgate prevents that gap with staged work, clearly marked hold points, segregated materials, daily records, and immediate escalation of changed conditions. The goal is to protect people and operations while avoiding rejected loads, concealed deficiencies, repeat excavation, and schedule loss.
Brownfield schedules fail when environmental work is treated as a separate early package with no connection to foundation design. Shoring piles can intersect hot spots, dewatering can move a plume, and imported fill can arrive before receiving documentation is approved. Hidden tanks or structures change both quantity and access. We integrate remedial limits with the excavation model, maintain contingency space, protect monitoring wells, and sequence consultant releases by area so structural work can start without waiting for the entire property.
We review the next two weeks of work against approvals, sampling, deliveries, shutdowns, and weather. Daily pre work discussions identify the exact limits and status of each area. Photographs and measurements are taken before concealment, and unresolved items stay visible on the field log until the responsible reviewer provides direction or acceptance.
Have drawings for brownfield remediation? Send them over and we will scope it.
We start with Phase One and Phase Two findings, conceptual model, remedy, and construction design. We also confirm access, utilities, operating restrictions, consultant responsibilities, notices, and the intended endpoint. Resolving these items before mobilization lets the field team establish controls, receiving routes, hold points, and contingency space instead of making compliance decisions beside an open excavation.
The main drivers are contaminant extent, demolition, tanks, shoring, water, soil destinations, and phasing. Weather, laboratory turnaround, inspection availability, and working hours can also control production. We build the sequence around the slowest approval or physical constraint and identify parallel tasks that continue without covering work, mixing materials, or compromising a required hold point.
The governing requirements depend on the material, property, equipment, and approval. The work can involve generic criteria or accepted property specific risk management requirements. We confirm the current project specific criteria with the engineer, Qualified Person, owner, municipality, or TSSA as applicable. A general industry practice never replaces the written requirement that governs the actual site.
Our field record includes area by area consultant release tied to excavation and foundation milestones. Entries are tied to dates and work areas so quantities and events can be reconstructed. We reconcile documents during the job, not only at closeout, which gives the owner and consultant time to correct a missing ticket, unclear location, or inconsistent quantity before demobilization.
We use contingency zones, safe exposure, sampling, classification, and revised limits. Work pauses until the condition is safe, isolated, and assigned a documented response. The supervisor records what changed, where it occurred, who provided direction, and how material or equipment was controlled, preventing an unexpected discovery from contaminating accepted work or disappearing from the record.
Yes, where the design permits it. We plan soil, groundwater, vapour, tanks, buried structures, barriers, and civil restoration. The operating boundary, shutdown windows, truck route, emergency access, controls, and daily handback condition are agreed before work starts. Production is staged so facility staff and construction crews do not share uncontrolled access to the work zone.
Closeout should include field records, as built controls, tickets, samples, and Qualified Person documentation. Depending on the project, it can also include photographs, surveys, receiving records, inspection releases, operating logs, test results, redline drawings, and a list of remaining assets. The package supports the owner's consultant and operations team, but professional certifications remain with the appropriately qualified person.
Still have a question about brownfield remediation? Ask our team directly.
Commercial and heavy-civil construction delivered 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-covered.
Licensed, Insured & WSIB-Covered, work managed and documented on every job
Tell us what you need and we’ll get you a quote. Licensed, insured & WSIB-covered · Free, no-obligation quote & on-site assessment.
Harrowgate Group provides brownfield remediation, 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.
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