Ms. Holden is an Environmental Geologist with GSI in Folsom, California. She has over four years of experience in the environmental field contributing to site characterization and remediation projects. She conducts broad multi-media environmental sampling, data analysis, and report writing. She is experienced in drilling (including sonic, auger, direct push, and air rotary), monitoring well installations, soil vapor probe installations, and has significant experience characterizing soils following USCS and ASTM standards. She is experienced in planning and implementing groundwater monitoring projects using a range of sampling methods. She has overseen site assessments and investigations involving geotechnical sampling and testing, geophysical surveys, and soil remediation. Her roles include field team task manager, and she contributes to data processing, analysis, and reporting. She received her BS from the University of California, Santa Cruz, in Environmental Geology.