GHA has served as the City Engineer & Surveyor for the City of Lake Forest for more than twelve years. Lake Forest is a 17-square-mile community with a population of 19,375 (2010 census). Incorporated in 1861, Lake Forest is a unique community with special historical and physical distinction.

GHA works closely with City engineering staff to provide a wide variety of plan review services, from individual grading permits to commercial development and major subdivisions. GHA plan review addresses such critical elements as compliance with floodplain requirements, wetland permitting, stormwater management, grading and erosion control, traffic studies, geometric design, construction phasing and staging, and coordination with other regulatory agencies.

GHA also provides guidance and review to staff for projects, including the annual road program, watermain improvements, and sanitary sewer projects. GHA has worked with City staff and other consultants to assist in the coordination and permitting of various Phase I and Phase II bridge, underpass, and transportation projects within the city.