- Freberg Environmental, Inc. (FEI) is an insurance program manager specializing in the development and marketing of environmental insurance programs nationwide. FEI is committed to timely, friendly customer service. FEI's in-house staff of technical and insurance professionals understands your clients' needs. Our staff underwrites, prices, provides quotes, and binds coverage for all our insurance programs. We also prepare policies, maintain endorsements, and handle loss control activities.www.feiinsurance.com