A contractor we worked with near the Thompson River last fall had a straightforward excavation plan—until the silt layers started shifting three meters down. What looked like competent overburden turned into a race against groundwater seepage, and without real-time monitoring data, the shoring adjustments would have been guesswork. That scenario is more common than people admit in Kamloops, where the valley geology mixes glacial till, lacustrine silts, and fractured bedrock in ways that surprise even experienced crews. We run deep excavation monitoring programs that catch those surprises early, combining inclinometers, piezometers, and vibration sensors into a single dashboard the site team can read without a geotechnical degree. In a city that sits at the confluence of two major rivers and experiences rapid snowmelt cycles each spring, pore pressure can change overnight. Our instrumentation gives you the heads-up before a deformation becomes a failure.
In Kamloops, the real danger isn't the depth of the excavation—it's the speed at which silty layers can transition from stable to flowing when pore pressure changes.
