Here is our report from Associated Earth Science.
I’m pleased to report that we have completed our explorations out at the HYW 9 Building Site for our future Canyon Creek Church Building. We generally found lodgment till in the west half of the site, with the upper 3 to 4 feet being weathered and less dense than the underlying, un-weathered lodgment till. The dense, glacially consolidated nature of the lodgment till typically provides suitable support of foundations with minimal subsurface soil preparation. Watch video HERE. The fine-grained nature of the lodgment till, however, is prone to disturbance (pumping, rutting, and similar near-surface, water-related issues) should construction occur during the wet season. Moisture sensitive soils can significantly increase the costs for wet season site development and foundation construction.
In the east half of the site, we generally observed a thin smearing of weathered lodgment till overlying weathered sedimentary bedrock. The mineral soil in this portion of the property typically consisted of more granular materials, but they were generally of limited depth (typically between 5 and 7 feet thick, measured from existing site grades) before encountering the underlying bedrock. One interesting thing to note about the soils on the east half of the property was the amount of oxidation observed in the samples we recovered. The oxidation indicates that water has historically passed through these soils and may be an indication of perched water during seasonal highs. This is consistent with the presence of the delineated wetland that was observed down-gradient from where we performed our test pits.
AESGEO
