Tectonic Slope Deformation Monitoring
Tectonic performed geotechnical services to investigate the root causes of a slope failure along Moodna Creek and Orange County Route 32. As part of Tectonics' ongoing monitoring program, the team installed sensors along the slope to provide real-time monitoring that may be used as an early warning system for the closure of Mill Street.
The slope has a total height of approximately 96 feet between the stream bank and the western edge of Mill Street, over a total length of approximately 178 feet with an average slope of approximately 1.9H to 1V. Observations show that the face of the slope varies, with the slope angle near the head scarp approaching a near-vertical condition.
Tectonics’ scope included the review of publicly available aerial photographs and other information related the existing slope failure, to assess the rate of progress of the failure and estimate future progress; prepared a desktop model of the existing slope, evaluate its relative stability, and evaluate potential causes of the ongoing failures though active sensor monitoring, the use of publicly available topographic information, site observations and our knowledge of the local soils.