Geotechnical Investigation – Pavement Cores and Soil Probes

The City of St. Charles is seeking proposals from qualified firms to conduct a comprehensive geotechnical investigation supporting its 2027 Street Resurfacing Program. The scope includes drilling and retrieving pavement core samples, installing soil probes, and providing laboratory analysis of soil and pavement materials. The city supplies location lists and maps for core and probe sites, and expects detailed reports that will inform design and construction decisions for upcoming street resurfacing projects. • Conduct pavement core drilling at specified locations and deliver intact core specimens. • Install and monitor soil probes to assess sub‑grade conditions. • Perform laboratory testing (e.g., moisture content, density, grain size) and produce a full geotechnical report. • Provide data in a format compatible with the city’s engineering staff for use in the 2027 resurfacing plan.