Corestone Engineering, Inc (CEI). is a geotechnical engineering and construction inspection/testing services firm based in Reno, Nevada. CEI is certified by Nevada Department of Transportation (NDOT) and California Department of Transportation (Caltrans) as a disadvantaged business enterprise (DBE). Email vimal@corestoneengineering.com for additional details on the services that are offered by CEI, proposals/quotes and teaming on RFP/RFQs with or without DBE requirements.