Sevenson Environmental Services Inc, 195 Morse St, Hamden, CT 06517, US

Founded in 1970, Langan Engineering and Environmental Services is a land development engineering and environmental consulting firm. With a location in New Haven, Conn., it specializes in geotechnical and civil engineering solutions. The firm provides site design feasibility analysis, land planning, stormwater management, water supply assessment, cost estimation and hydrological investigation services. Langan Engineering and Environmental Services offers a variety of landscape architecture and planning solutions, such as land development, community planning, environmental design, natural resources permitting and wetland mitigation. It also provides land surveying, brownfield redevelopment, decommissioning and demolition services. The firm offers traffic and highway design, indoor air quality investigation, database management, mapping and permitting solutions. Langan Engineering and Environmental Services serves the residential, industrial, retail, recreational and institutional sectors. Headquartered in Elmwood Park, N.J., it employs a staff of more than 650 professionals.