The area of Jerome, an old mining town on Highway 89A between Prescott and Flagstaff , was besieged by heavy rainfall in late December 2004. This led to the partial failure of the embankment and a dry-stacked rock wall, subsequently undercutting the northbound lane of Highway 89A. The Arizona Department of Transportation (ADOT) retained NCS to develop a plan for the emergency stabilization of the surficial slide failure and the permanent remediation of the undercut roadway. A soil nail retaining wall was used to remediate the failed portion of the wall.
