Sadat Associates, Inc. (SAI) is a full-service firm handling a wide variety of environmental and civil engineering projects in the areas of remedial investigation and cleanups of contaminated sites, brownfield redevelopment, groundwater management, risk assessment, hazardous waste, solid waste, wastewater management and design, water supply design, air quality analysis, regulatory compliance, landfill design and closure and dam safety. We have over 20 years of environmental experience on hazardous waste projects.