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Topic: Vapor Intrusion: Below-Slab Protection Methodologies 

Speaker:  Joe Marks, VP of Engineering, Stego Industries

Time: Tuesday, December 11, 11:30am-1pm

CEMS will not be applying for a CLE for this presentation  

For brownfields and contaminated sites, the focus has historically been to protect human health by preventing exposure to direct contact of contaminated soil or drinking contaminated water.  We now know that inhaling chemical vapors poses a potential risk to the health of residents, workers, and other occupants who are inside of the buildings.  Vapor intrusion is an evolving science and it presents challenges to redeveloping these sites.

This educational and technical seminar provides an in-depth look at below-slab vapor intrusion protection and how it can be a sustainable tool to control transmission of VOCs into the built environment.  CEMS attendees will gain a better understanding of the different means and methods available for protection of vapor intrusion below buildings.  It will discuss the evolution of geomembranes and advancements in barrier film extrusion and engineering specifically as it relates to VOCs associated with contaminated sites.  The presentation will also walkthrough the science behind vapor migration below and through concrete slabs, and how an understanding of the geomembrane’s permeation characteristics can assist in design of the mitigation system.  In addition, attendees will learn what design, construction, and installation considerations can be employed to ensure success.

Joe was born in Portland, Oregon, educated at Gonzaga University in Spokane, Washington, and has spent the majority of his working life at Stego Industries- a family owned barrier-film manufacturer out of Southern California. A Mechanical Engineer (by schooling only) Joe has worked for Stego Industries for 15 years. He currently overseas Stego’s Technology and Innovation Center out of Denver where he heads up, among other things, research and product development.

For more complete topic information, please view this document:

CEMS December 2018 Presentation Information

LOCATION: The EPA Conference Center located on the 2nd floor of the EPA Region 8 Headquarters building at 1595 Wynkoop St. When entering the building, visitors will be asked by the building security guards to display valid photo identification, pass through airport type security machines, sign in at the lower front desk, and wear a temporary EPA visitor badge. Then please proceed to the second floor to register with the CEMS representative.

MEETING FORMAT: Members may either bring their own lunch and attend the meeting for no charge, or they may request that CEMS order a box lunch for them. The cost of the box lunch for members is $16.00; for non-members, $19.00.

RESERVATIONS: PLEASE give your name, company name and phone number via email to admin@coems.org. PLEASE INDICATE IF YOU ARE RESERVING A BOX LUNCH OR BRINGING YOUR OWN. Reservations must be received BEFORE Friday, December 7, 2018 at 5:00PM. No reservations will be taken after this date! Payment of $16.00 for members, $19.00 for non-members will be accepted at the door with prior reservation. Please cancel your reservation by Friday, December 7, 2018 if you are unable to attend. It is the policy of the Society to bill for meals reserved but unclaimed. You may also pay with credit card via PAYPAL below:


Box Lunch

NOTICE: CEMS would like to thank EPA for the use of meeting space and would like to emphasize that the use of EPA space does not constitute endorsement of CEMS, sponsors of CEMS functions, or the content of CEMS workshops or meetings.