Gasch Geophysical Services,

GGSI is a privately-owned, geophysical consulting firm for the engineering, environmental, exploration, and blasting industries. We are based out of Rancho Cordova, California, a suburb of Sacramento, but have completed surveys across the U.S. and around the globe. GGSI is dedicated to providing quick, cost-effective solutions to a variety of engineering, geotechnical, and environmental problems through the skillful selection and application of modern geophysical techniques. We pride ourselves on using a strict eye for detail and cutting-edge technology to produce a high quality product that speaks for itself. Science, dedication, and integrity are our cornerstones.