Soil Remediation

Materials and acceptance criteria for soil 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.

Stockpiles are built on a compatible low permeability base, covered against precipitation and dust, bermed where runoff could leave the cell, and identified by source area and status. Loads use documented destinations and soil characterization appropriate to the receiving site. Imported granular and engineered fill are supported by source documentation and placed to the geotechnical specification, commonly in lift thicknesses suited to the selected compactor and tested density. Where excavation approaches structures or services, the shoring design and locate information set the working limits.

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.

Soil 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.

The costliest failures are underestimating the plume, mixing soil classes, hauling before acceptance, allowing rain into an open cut, and backfilling before confirmation results release the excavation. These errors create repeat excavation, rejected loads, water treatment, and lost schedule. We use staged excavation, separate stockpile IDs, visible hold points, daily quantity reconciliation, and weather planning. Equipment travels from cleaner to more impacted zones where practical, and buckets, tracks, and truck contact surfaces are cleaned before they can carry soil across the site.

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.