Building Materials, Firm, Overview; Audit Services; Construction Management Services; Drilling Services; Inspection Services; Testing Services; Potowmac Engineers Firm and Overview; Construction inspection, geotechnical engineering, testing and construction management services. Services include concrete and soils testing, structural steel and welding, post tensioning and roofing inspections, structural surveys, environmental audits, geotechnical engineering and subsurface investigation. Markets served include commercial ...