During his more than 36 years in the USDA Forest Service, he served as an environmental or engineering geologist on National Forests in Utah and California. In those capacities, Jerry collected and interpreted geologic information needed for sustainable development and multiple-use management of natural resources. A primary focus of his work was landslide hazard assessment for land and resource planning, post-wildfire mitigation and design of projects such as timber harvest, roads, and similar resource development activities. After 2006, he worked exclusively on assessing and directing cleanup of hazardous substances under the Forest Service's CERCLA authority at Forest Service facilities, former solid waste sites, and abandoned mine on eleven of the fifteen National Forests in California. His technical expertise was sought for completing landslide mapping and hazards interpretation assignments in St. Lucia, Dominica, St. Vincent and Jamaica through the USDA Forest Service's Disaster Assistance Support Program. Jerry also served as the landslide specialist on teams conducting post-disaster assessments or developing restoration measures. Puerto Rico, Thailand, Bulgaria and Greece are among the locations where he participated in these activities. Based on his professional experiences, he has authored or co-authored more than 60 contributions to books, proceedings and peer-reviewed journals.
Listed skills include Geology, Environmental Science, Sampling, Remote Sensing, and 14 others.