Professional Service Directory

Langan Engineering, Environmental, Surveying and Landscape Architecture, DPC


Langan is a professional land development consulting firm offering integrated services in site/civil, geotechnical, environmental engineering, traffic, landscape architecture, surveying, marine/waterfront engineering, asbestos/lead consulting, natural resources assessment, and environmental permitting. Our comprehensive integrated approach to land development and redevelopment projects ensures continuity, constructability, and adherence to projected schedule and budget.


21 Penn Plaza, 360 W. 31st Street, 8th Floor
New York, NY 10001
Tel: 212-479-5400
Fax: 212-479-5444


George Leventis, PE

Firm Established



George E Leventis, PE

David T Gockel, PE, PP, LEED AP

Andrew J Ciancia, PE, LEED AP

Alan R Poeppel, PE

Marc J Gallagher, PE, LEED AP

Type of Work

Engineer - Civil
Other - See Firm Description for details

Barclays Center, Brooklyn, NY

Columbia University Manhattanville, New York, NY

Kingdom Tower, Kingdom of Saudi Arabia


AIA New York Chapter
536 LaGuardia Place
NY, NY 10012
(212) 683-0023

Gallery Hours
Mon-Fri: 9am to 8pm
Sat: 11am to 5pm

Office Hours
Mon-Fri: 9am to 5pm