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AEG Event 12/11/25: Vapor Intrusion Controls

When
11 Dec 2025
6:00 PM - 10:00 PM
Location
60 Cottontail Lane, Somerset, NJ 08873

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AEG NY-P HOLIDAY DINNER MEETING

AEG NY-P Chapter Holiday Party

Integrated Vapor Intrusion Controls for Redevelopment:

Barriers, Venting, Blowers, and Monitoring

By Zarah Thanasides, PE - Vice President, EAI, Inc.

December 11, 2025

At the Clarion Hotel in Somerset, New Jersey

Photo: Field installation of a gas vapor barrier as part of a layered vapor intrusion mitigation system
Time:	Social Hour 6:00 pm – 6:45 pm / Dinner 6:45 pm – 7:45 pm Presentation begins at 8:00 pm
Place:	Clarion Hotel / 60 Cottontail Lane, Somerset, NJ 08873 / (732) 560-9880
RSVP:	End of Business, Wednesday , December 10, 2025. A timely RSVP is appreciated! Links to pay in advance will be emailed once you register. (If not yet posted, please check back soon to register.) Please note, more than one individual can be registered at a time. Also, don't forget to add the event to your calendar from our website! Reminder to regular attendees - you do not need to login to register!
Cost:	In-Person Attendance Registration Fees - $40 for AEG members / $50 non-members $5 for students with RSVP / Professors attend as our guests at no charge Remote Attendance Registration Fee - $15.00 No LSRP CEC credits will be offered for remote attendance. Remote Registration cut-off: Tuesday, December 9, 2025 Important: The online payment links will be sent to you after you register. Guests are always welcome! Pay at the door by check, cash, or credit card. Make check payable to AEG. Please RSVP in advance to avoid $5 walk-in fee, effective February 2025.
CECs:	One Professional Development Hour (PDH) will be awarded for attending the presentation. SRPLB Approval for One Hour of LSRP Technical continuing education credit (CEC) will be requested.
$upport $tudents! Bring CA$H for our annual Pass the Hardhat for the AEG Foundation at the December meeting. Help Students attend Geology Field Camp by donating with us to our scholarship funds.

ABSTRACT

Redevelopment of brownfields, landfills, and former industrial sites increasingly requires layered vapor intrusion (VI) mitigation to ensure long-term indoor air protection. This presentation highlights integrated systems that combine gas vapor barriers, sub-slab venting/depressurization, blowers, and indoor methane sensors to address complex vapor and methane conditions.

Using recent East Coast projects as examples, the talk will outline how each layer functions, when active components are needed, and why single-method approaches often underperform. Key topics include barrier installation, passive versus active venting design, blower use for pressure field extension, methane sensor placement and alarm thresholds, and essential QA/QC steps such as smoke testing and commissioning.

Attendees will learn how coordinated, multi-layered systems improve reliability, safety, and regulatory compliance across diverse redevelopment scenarios.

SPEAKER BIO

Zarah Thanasides, PE is Vice President of EAI, Inc., where she leads complex vapor intrusion mitigation and specialty construction programs across the East Coast. A licensed Professional Engineer in New Jersey, she has overseen the design and installation of more than 10 million square feet of vapor intrusion mitigation systems for brownfields, industrial facilities, and large-scale redevelopment projects.

A proud graduate of Stevens Institute of Technology, where she earned her Bachelor of Engineering in Environmental Engineering, Zarah combines technical precision with a collaborative, client-focused approach. Her leadership reflects a deep commitment to innovation, quality, and environmental stewardship.

Zarah is an active advocate for women in engineering and construction, mentoring emerging professionals and advancing inclusion within the industry. She also serves on the Hillsdale Environmental Commission, supporting community-focused environmental initiatives. Outside of work, she enjoys cooking, traveling, and spending time with her family.

EAI, Inc. is an environmental management firm located in Jersey City, NJ that specializes in gas-vapor barriers, sub-slab venting systems, and monitoring system installations.

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AEG Event 12/11/25: Vapor Intrusion Controls

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