HSA Engineers & Scientists, also known as HAS, is a member of the Conestoga-Rovers and Associates (CRA) global network of companies. It is one of the leading, full-service environmental and geotechnical engineering consulting firms in the United States. The firm employs over 200 employees in over five offices in Florida, South Carolina and Georgia. HSA Engineers & Scientists offers engineering consultation, information technology, forensic science, and civil and construction services. It has expertise in the assessment and remediation of heavy metals, chlorinated solvents, agri-chemicals, explosives and other contaminants. The firm provides forensic engineering, peer review and litigation support solutions on cases involving hazardous wastes, advanced hydrogeology, geochemistry, water quality impact analysis and regulatory compliance issues.