Welcome to DEI’s website. DEI is a small environmental and project management consulting company offering services for a diverse range of environmental disciplines. Through decades of hands on experience we have become experts in the fields of recycling, solid waste management, landfill gas systems, environmental compliance, permit acquisition, land use entitlements, and renewable energy recovery. DEI’s clients benefit from our unique tenure of technical expertise refined through direct operations experience. We specialize in performing work on behalf of owners, becoming an extension of their internal resources.