Ms. Pendrigh is a Senior Geophysicist at Collier Geophysics, serving as Operations Manager for the Lakewood, Colorado office. She has a broad range of experience in engineering and environmental geophysics, including using electrical, electromagnetic, magnetic, seismic, and resistivity methods for bedrock, karst, and groundwater mapping, dam and levee assessment, seismic site class determination, utility and well location, and transportation infrastructure assessment.