INTERRA, Inc. has provided Quality Assurance services for the Village of Downers Grove for more than 10 years. The work has involved concrete and hot mix asphalt (HMA). The scope of work includes on-site material testing and material Quality Assurance for various routes located in Downers Grove. Duties include plant and field testing and Quality Assurance on HMA, plant testing on Portland cement concrete (PCC), laboratory testing on all HMA and PCC. Projects consist of overall Quality Assurance and reporting. Material Quality Assurance Technicians assigned to this project are all PCC and HMA Level II certified by IDOT and have performed inspections on several IDOT MFT QC/QA projects. All work was reported on the latest IDOT QC/QA package. HMA report work was done using an Excel based spreadsheet provided by IDOT. INTERRA has also provided Geotechnical services for Downers Grove.