It is the mission of Cowan Associates, Inc. (CAI) to provide quality Professional Engineering services, personalized and with on-time delivery. We, the employees and management, aim to strive for excellence so that you, the client, will achieve success.
To be an outstanding Professional Engineering Service provider, who partners with clients with diverse needs, to successfully turn their ideas into reality.

Scott P. McMackin, P.E., LEED AP, Vice President
 Director of Land Development Engineering

Professional Engineer
Pennsylvania - Reg. # PE-057003-E
Connecticut - Reg. #22726
New Jersey - Reg. #GE43380
Delaware - Reg. #12656


Master of Civil Engineering, Villanova University - 2003
Master of Business Administration - Finance, Temple University - 2000
Bachelor of Science - Civil Engineering, The Pennsylvania State University - 1995
Professional Associations
American Society of Civil Engineers - Associate Member
Pennsylvania Society of Professional Engineers - Member
National Society of Professional Engineers - Member
Association of State Dam Safety Officials - Member
Continuing author, Cowan Associates, Inc. Newsletter, "Angle and Line"

Areas of Concentration

Civil Engineering
Construction Engineering
Erosion and Sediment Control
Flood Control
Highway and Roadway Design
Land Development Engineering
Municipal Engineering
Stormwater Management
Traffic Engineering
Specialized Expertise
Culvert Design
Flood Plain Analysis
Forensic Investigation
Highway Engineering
Highway Occupancy Permit Design
Hydraulic Engineering
Hydrologic Engineering
Land Use and Zoning
Permit Preparation
Roadway Design
Storm Drainage Design
Site Access and Permitting
Professional Experience
Cowan Associates, Inc. (CAI) 1996 to Present

This is a broad-based engineering firm offering services in the fields of Civil, Structural, Environmental, Land Development, Municipal and Building Engineering, as well as Surveying, Landscape Architecture, and Construction Management. Currently serving as Project Engineer representing private and municipal clients, as Director of Business Development in charge of sales and marketing, as Director of Land Development Engineering, and as Vice President.

Prince William Construction Company 1995 to 1996
Served as an estimator preparing bids for site development, roadway, and VDOT construction projects. Duties included full quantity takeoff, contacting suppliers, generating production rates and costs, and preparing proposals.
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