Langan Promotes Costello to Senior Principal

Five Associates Become Shareholders in the Firm

Elmwood Park, New Jersey (May 28, 2010) – Langan Engineering & Environmental Services officially announced that Colleen Costello, PG, has been promoted to Senior Principal, and that Caryn Barnes, LSRP; Mark Devaney, LEED AP; Eric Schwarz, PE, LEED AP; Mark Seel, PE, PG; and Beverly Williams, SPHR have become shareholders in the firm. Langan, a privately held company, now has 14 Principals and 37 Senior Associates.

Langan’s newest Senior Principal, Colleen Costello, PG, possesses more than 20 years of experience directing comprehensive site investigations and remedial activities for Brownfield Redevelopment, State Voluntary, RCRA, and Superfund projects.  Her expertise includes the application of risk-based criteria to complete site characterizations and the design of cost effective solutions for complex sites.  She also specializes in implementing Exit Strategies by utilizing innovative regulatory and technical approaches.  A sought after speaker at national environmental forums, Costello was selected to be one of the nine national trainers for ASTM’s Remediation of Groundwater by Natural Attenuation Standard and supported the development of Washington’s Department of Ecology’s “Guidance on Remediation of Petroleum-Contaminated Ground Water By Natural Attenuation.”

The five new Senior Associates reflect Langan’s growing diversity of leadership. Barnes, LSRP, is an environmental leader in Langan’s Philadelphia office. Devaney, LEED AP, is the firm’s Director of Business Development and Marketing. Schwarz, PE, LEED AP, a site/civil engineer, leads Langan projects in Florida and throughout the Caribbean and Latin America. Seel, PE, PG, a geotechnical engineer, leads foundation, slope stability, and tunneling projects around the country. Williams, SPHR, is the Corporate Director of Human Resources at Langan.

“On behalf of my partners, we are proud to have Colleen Costello become a Senior Principal at Langan,” said David T. Gockel, President/CEO, Langan. “Additionally, our five new Senior Associates have demonstrated their expertise and leadership abilities, which have helped our firm grow and expand significantly and we look forward to their continued contributions to our clients for many years to come.”

About Langan Engineering & Environmental Services
Founded in 1970 and headquartered in Elmwood Park, N.J., Langan ( provides integrated site engineering and environmental consulting services for private developers, property owners and public sector clients. Firm services include site/civil, geotechnical, and environmental engineering, as well as landscape architecture and planning, survey/mapping, BIM-compatible 3D Laser Scanning, traffic/transportation, CADD/GIS, natural and cultural resources/permitting, and sustainable design consulting. Langan employs more than 500 professionals and has regional offices in New York City; Philadelphia, Bethlehem, and Doylestown, PA; New Haven, CT; Trenton, NJ; Arlington, VA; Miami and Tallahassee, FL; Las Vegas, NV; and Irvine, CA.  With more than 125 LEED APs, the firm ranks among the top 30 Green Design Firms by Engineering News-Record and has ranked among the Top 5 Best Engineering Firms to Work For by CE News. Langan International, the worldwide subsidiary of Langan Engineering & Environmental Services, with offices in London, Athens, Abu Dhabi and Dubai, provides all firm services to private and public sector clients around the globe.