GSE is an 8(a), woman-owned engineering and environmental services firm with experience providing high-quality, cost-effective engineering solutions for our public and private sector clients. GSE is a full-service engineering, construction, and environmental services firm under NAICS Codes 541330, 562910, and 541620. GSE was established in 1991 with the goal of providing engineering and environmental compliance services. Today, our company has grown to provide full service environmental, engineering, compliance and field services. GSE is a leader in environmental compliance, GeoProbe® services, stormwater pollution prevention, wetlands delineation, site investigations, and remediation services. GSE’s success in meeting the needs of our clients is demonstrated by our excellent performance history. We enjoy repeat business with over 90% of our clients.