Markham sits at the centre of some of the busiest development activity in York Region, from the office and technology corridor along Highway 404 to the infill and mid-rise projects reshaping Unionville and Markham Village. Every one of those projects starts underground, with soil and groundwater data that stands up to review.
Terra Firma Environmental Services Ltd provides environmental and geotechnical drilling in Markham for consulting engineers, environmental project managers and contractors. We drill boreholes, install monitoring wells and piezometers, collect soil and groundwater samples, and support remediation and earthmoving work on the same site when it is needed.
Our fleet includes track-mounted and limited-access rigs, so we can reach rear yards, parking structures and active industrial floors where a truck-mounted rig will not fit.
We provide drilling services in Toronto for environmental, geotechnical, and construction projects.
Terra Firma Environmental Services Ltd specializes in geotechnical drilling and environmental services in Ontario.
Much of Markham sits on the Halton Till plain, where dense silty clay till makes for slow but stable drilling and low-permeability soils.
Shallow sand and silt seams within the till often hold perched water, which affects both well screen placement and excavation planning.
Sites near the Rouge River, Berczy Creek and the Don headwaters need extra care around setbacks and sediment control.
Older commercial and industrial parcels in Milliken and along Steeles Avenue often contain imported fill that has to be logged and characterised.
We mobilise across the whole city and the surrounding municipalities, including:
Efficient drilling projects follow a structured workflow that minimizes risk and ensures regulatory compliance.
