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Announcements


Thank you to everyone who took the time to attend our Battelle learning lab at the Battelle Chlorinated conference today. We appreciate your time and wonderful questions. #battelle2018 ... See MoreSee Less

Vapor Pin updated their cover photo. ... See MoreSee Less

Wonderful to see new and familiar faces at Association for Environmental Health and Sciences Foundation. Stop by and see us at booth 33. ... See MoreSee Less

Craig Cox, CPG will be presenting two posters during the Poster Sessions at the 28th Annual International Conference on Soil, Water, Energy, and Air. (Abstract numbers: 144 & 145) Come see the Mini-PinTM at booth 33! ... See MoreSee Less

#BBGroundgas18 Great opportunity to meet everyone at the Groundgas Conference today in London ... See MoreSee Less

Vapor Pin and our Europe distributor Ribble-Enviro will be exhibiting at the
Ground Gas 2018: Assessing and managing ground gas risk
Date: 01 March 2018 - Venue: Holiday Inn London - Kensington High Street, London, Wrights Lane W8 5SP
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Enjoyed listening to Tony McDonald with AZ solutions talk about pilot test at the Southeastern States VI Symposium. ... See MoreSee Less

Soil Gas Control Systems in New Construction (CC-1000). This new standard addresses RRNC construction for virtually
every building that is larger than a one- and two-family
dwelling. https://aarst-nrpp.com/wp/store/rrnc-for-larger-buildings-cc-1000/
... See MoreSee Less

Great seeing everyone at last night's MSECA event. ... See MoreSee Less

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Main Content

Vapor-Intrusion Assessments


Using Vapor Pins® for Vapor-Intrusion Assessments
The Vapor Pin® has a number of applications, but it was designed to collect soil gas for vapor-intrusion assessments, and it does it well. The soil gas directly beneath a building floor, “subslab” soil gas, best represents the risk of vapor-intrusion, because it is the next closest thing to indoor air. But unlike indoor air, subslab soil gas generally does not contain background contamination from indoor or outdoor sources. Subslab soil gas more representative of indoor conditions than deep soil gas, and it’s easier to collect using hand-held equipment.

Subslab soil gas is normally collected prior to sampling indoor air. One or more Vapor Pins® are installed by drilling 5/8-inch holes through the floor with a hammer drill, and installing them, as described in the Standard Operating Procedure (SOP). For a one-time sampling event, one can use brass Vapor Pins® installed in the stick-up configuration. If repeat sampling is needed, we recommend installing stainless-steel Vapor Pins® in the flush-mount configuration.

After installing the Vapor Pin® and allowing soil gas to equilibrate for two hours or more, connect the Summa canister, TO-17, or other sample container to the Vapor Pin®, purge the dead space in the sample train, and collect the sample, as described in the SOP. As discussed in the memorandum “Using Vapor Pins® for Source Characterization”, vapor sources are often located away from obvious locations, such as buried tanks and degreasing areas, so we recommend conducting field screening at additional locations when working near potential source areas.

Always follow the appropriate guidance when assessing vapor intrusion. Some regulatory agencies allow or encourage the use of the Vapor Pin®, but some guidance might preclude the use of some devices.

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