This State of Illinois State Park project included the development of the Starved Rock Visitor Center. INTERRA provided Quality Assurance services which included soil and concrete testing and inspection. Soil compaction testing was performed and the Dynamic Cone Penetrometer (DCP) was used to check the soil bearing capacity. The density of the soil was also verified to meet the project requirements and specifications. Both mortar and grout were tested and inspected. Sieve analysis was also performed.