Sierra Geotechnical Services, Inc. was founded in 1989 with a philosophy that combines commitment, motivation, and teamwork to provide a quality product in a timely, professional, and cost-effective manner. We perform a full range of consulting services, including geotechnical engineering, environmental, engineering geology, mining, hydrogeology, groundwater, materials testing, and construction inspection. With a technically strong team of professionals licensed in California and Arizona, we use state-of-the-art technology to service a broad spectrum of clientele. Our locally based offices provide for quicker responses to field and laboratory testing requests. We offer consulting services to private developers, architects, civil engineers, contractors, hospitals, lending institutes, law firms, and public agencies, including universities, school districts, water agencies, and city/county engineering departments.