Ninyo & Moore’s testing equipment is calibrated annually by representatives utilizing equipment traceable to the National Institute of Standards and Technology, and is regularly inspected by the Cement and Concrete Reference Laboratory (CCRL). In addition to our many certifications, our laboratories participate in soil, asphalt, and concrete proficiency sampling programs, including those administered by the Cement and Concrete Reference Laboratory (CCRL), the Caltrans Reference Samples Program (RSP), and/or state DOT.