Civil engineer, $110,000 to $130,000, carrying land development sites from concept through permitted set at a six person firm in Washington, D.C. You'd draw your own grading, stormwater management, utility and erosion and sediment control plans in AutoCAD, and answer the agency comments yourself. Huska & Horgan Engineering, LLC is a site civil and land development firm headquartered at 1050 30th St NW in Washington, D.C., working across the District, Northern Virginia and Maryland.