Design & Permitting


From wetland delineation and mitigation to environmental assessments and permitting, GD&F has the experience and know-how. We also have significant capabilities in hydrology and hydraulic engineering. We use the latest computer software programs for bridge waterway openings, scour computation, water surface profiles, floodplain analysis and flood routing.

GD&F’s permitting experience includes urban drainage systems, storm sewers, culverts, stormwater detention (above and below ground), erosion and sedimentation control, stormwater management and roadway drainage.

Featured Projects

I-99 Enterprise Campus

Glendale Lake Culverts Replacement (SR 1021 and 1023) Design/Build

Storm Water Improvements Feasibility Study