Over 21 years of environmental assessment, groundwater planning, modeling, soil and groundwater investigation and environmental cleanup design and oversight throughout the United States. HirschGibney is an environmental services firm that specializes in redevelopment of environmentally degraded properties. Richard J. Hirsch, CGWP, RG, HirschGibney`s President and Principal Hydrogeologist, has more than 21 years of experience working with developers, and managers/project managers of industrial, commercial, and agricultural properties/facilities throughout the United States.