US Patent # 8,220,347 B2, US 9,291,531 B2 | Call Us Today! 1-614-504-6915

Announcements


Stop by and see the new Vapor Pin Insert at booth 37 during the AEHS conference this week. We look forward to seeing you. ... See MoreSee Less

Please enjoy the presentation by Marco Falconi, Contaminated sites expert and Researcher at ISPRA, on phytoremediation workshop organized by Italian National System for the Protection of Environment. He spoke about the technology selection criteria. In the framework. He shared many wonderful technologies, one of which was the VAPOR PIN® as a "technique useful to avoid remediation overestimation".ARPAM - Seminario nazionale "Fitotecnologie per la gestione e la bonifica di siti contaminati: esempi di buone pratiche" - Pesaro 4 marzo 2019 Intervento di ... ... See MoreSee Less

2019 EPA Region VII Stakeholders Meeting ... See MoreSee Less

Here we grow again! ... See MoreSee Less

Happy Holidays! We share our warmest wishes for a New Year filled with joy, peace and prosperity. We appreciate your business and look forward to helping you in 2019! ... See MoreSee Less

http://seminario.ekosbrasil.org/en/
10h00 – 12h00 SESSION 1: Solutions – Craig Cox (Cox-Colvin & Associates, Inc.) – will be presenting – Evaluation and Remediation of a Large Comingled Dilute Chlorinated VOC Plume in Sand and Gravel Aquifer – a Case Study
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October 15-18, 2018: 34th Annual International Conference on Soils, Sediment in Amherst, Massachusetts at Booth B16. October 18, 2018 - Session 19: 9:30 a.m - Craig A. Cox will present Successful Closure of a DNAPL Site – Lessons Learned ... See MoreSee Less

#stopradon AARST international Radon and Trade Show 2018 ... See MoreSee Less

Available now - Mini Vapor Pin. Please make sure to read the SOP or the Mini Vapor Pin as it is a different installation that the original version. The Mini Vapor Pin comes as a set. SET INCLUDES: Mini Vapor Pin®, FLX-VPTM Barb with O-ring, Silicone Sleeve, and Mini Vapor Pin® Secure Cover with O-ring.
Order yours today!
https://www.vaporpin.com/product/mini-vapor-pin/

https://www.vaporpin.com/wp-content/uploads/2018/07/Mini-Pin-SOP-7-13-2018-Web.pdf
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Did you know that the Vapor Pin is a tool for..
1 - Locating VOC sources below hard surfaces
2 - Collecting high-resolution data sets
3 - Differential Pressure Testing
4 - Radon Mitigation Testing
5 - Stray Gas Evaluations
6 - Sub-Slab Soil Gas Sampling
7 - Long Term Monitoring
8 - Continuous Monitoring
9 - Vapor Intrusion Assessments
10 - Methane Sampling on Landfills
etc, etc., etc.,
Contact us for more information
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Main Content

Source Characterization


Using Vapor Pins® for Source Characterization
The Vapor Pin® is ideally suited for locating Volatile Organic Compound (VOC) contamination sources beneath pavement. Our experience is that most sites have sources of contamination that in addition to those associated with underground tanks and degreasing areas. Unsuspected source areas often correspond to former exterior doors that were obscured by later building expansion. Cox-Colvin has located such sources equipped with little more than some Vapor Pins®, a hammer drill, and a multi-gas meter.

Cox-Colvin’s approach to VOC source investigation consists of installing Vapor Pins® along a grid, allowing the points to equilibrate, and collecting readings with a multi-gas meter. With a team of two people, we’ve installed as many as 90 Vapor Pins® in one day, and sampled, removed the Vapor Pins®, and plugged the holes on the following day.

For source characterization, we normally install brass Vapor Pins® in the stick-up configuration on a grid spacing of 20 to 30 feet. We cover the Vapor Pins® with traffic cones and allow them to equilibrate for at least an hour. We then collect field readings with a hand-held multi-gas meter capable of measuring VOCs via Photo-Ionization Detector (PID), oxygen (O2), and Lower Explosive Limits (LEL). The PID indicates VOC sources. O2 in soil gas is normally lower than in air, but unusually low levels (<5%), especially with high LEL readings, are characteristic of methane generation (methanogenesis).
Methanogenesis occurs when non-chlorinated solvents or other organic matter degrades at too high a rate for O2 replenishment.

After collecting field readings at all of the sample points, samples are collected from locations with elevated PID readings, and submitted to a laboratory for confirmation. Samples can be collected into evacuated glass vials, Bottle Vacs, Tedlar bags, Summa canisters, sorbent tubes, and potentially other devices. Some containers do not offer low enough reporting levels for vapor intrusion sampling, but low levels are probably not needed for locating contaminant sources.At the conclusion of sampling, remove the Vapor Pins® and fill the holes with hydraulic cement or caulk.

Urethane and polyurethane caulks are recommended by radon mitigation guidance for filling holes and cracks, but they contain VOCs that could interfere with subsequent sampling. Hydraulic cement does not contain VOCs, but it sets up quickly, making it potentially difficult to fill borings to total depth.  After removing the silicone sleeve and other plastic parts from the Vapor Pins®, decontaminated them for reuse. Cox-Colvin has a number of Vapor Pins® that they have used an average of seven or eight times with no breakage or damage.

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