Vapor intrusion

Public Input Opportunity – Publication RR-649, Guidance for Documenting the Investigation of Human-made Preferential Pathways Including Utility Corridors

Posted on by Mick

The Remediation and Redevelopment (RR) Program is now seeking input on publication RR-649, Guidance for Documenting the Investigation of Human-made Preferential Pathways Including Utility Corridors.

The guidance is intended for persons who perform and document investigation and remediation of sites with environmental contamination under Wisconsin Administrative Code (Wis. Admin. Code) chs. NR 700-799, including the Wisconsin Department of Natural Resources (DNR) staff who review such submittals.

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Reminder Letter Sent To Responsible Parties To Prioritize Vapor Intrusion Evaluations At Sites With TCE

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The Wisconsin Department of Natural Resources (DNR) Remediation and Redevelopment (RR) Program is sending a reminder letter regarding vapor intrusion to parties responsible for cleanup at open remediation sites in Wisconsin. A copy of the letter will also be sent to the responsible party’s (RP) environmental consultant.

The letter is a reminder to RPs and consultants that the potential for short-term (i.e., acute) health risks associated with trichloroethylene (TCE) in indoor air are serious enough that it should be one of the first things evaluated as part of a site investigation. This is especially true on sites where contamination may impact sensitive populations and should be routinely reassessed throughout a project’s life to ensure protectiveness.

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Reminder: Issues & Trends Webinar on April 20, 2021: Vapor Intrusion – Acute Risk Associated with TCE

Posted on by Mick

The Remediation and Redevelopment Program reminds you that the next webinar in the Issues & Trends series will take place on Tuesday, April 20, 2021, from 12:00 p.m. to 1:00 p.m.

The scheduled presentation is: Vapor Intrusion – Acute Risk Associated with TCE.

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New Guidance And Training For Investigation And Remediation Of 1,4-Dioxane

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Newly updated and comprehensive information related to the investigation and cleanup of 1,4-dioxane is now available from the Interstate Technology Regulatory Council (ITRC).

View the fact sheets and guidance documents on ITRC’s website.

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ITRC’s Vapor Intrusion Mitigation Technical Resources Now Available

Posted on by Mick

A new, comprehensive series of technical resources covering a variety of vapor intrusion mitigation topics is now available from the Interstate Technology Regulatory Council (ITRC). The resources are included on the Remediation and Redevelopment (RR) Program’s web page of Vapor Intrusion Resources for Environmental Professionals.

ITRC’s technical resources cover a range of topics specific to vapor intrusion mitigation, including:

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Issues & Trends Webinar Dec. 16 – Vapor Intrusion: Screening and Mitigation Decisions, Scope and Timing

Posted on by Mick

The Remediation and Redevelopment Program reminds you that it will present the next Issues & Trends webinar on Wednesday, Dec. 16, 2020, from noon to 1:00 p.m.

The scheduled presentation is Vapor Intrusion: Screening and Mitigation Decisions, Scope and Timing. Speakers will present information from investigations in Wisconsin and elsewhere related to the variability of vapor concentrations, and the factors which control variability.

To sign up for the webinar, visit the RR Program’s Conferences and Training webpage.

Recordings of previous Issues & Trends webinars, including the July 2020 presentation: Vapor Intrusion – New Preferential Pathways, may be found in the RR Program’s Training Library.

Vapor Mitigation System Inspection Log Available

Posted on by Mick

In October 2020, the Remediation and Redevelopment (RR) Program created a Vapor Mitigation System Inspection Log, Form 4400-321. The new form explains the functionality of the vapor mitigation system components and allows installers to include site-specific photos of the system components (e.g., drop points, fans). The form is also designed to assist property owners as they take over responsibility for system inspections after case closure, helping to ensure the long-term care and maintenance of the system.

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Reminder: Issues & Trends Webinar on December 16 – Vapor Intrusion: Screening and Mitigation Decisions, Scope and Timing

Posted on by Mick

The Remediation and Redevelopment Program reminds you that the next webinar in the Issues & Trends series will take place on Wednesday, December 16, from 12:00 p.m. to 1:00 p.m.

Continue reading “Reminder: Issues & Trends Webinar on December 16 – Vapor Intrusion: Screening and Mitigation Decisions, Scope and Timing” →

Consultants’ Day 2020 Update: Keynote Speaker; Mediasite Option; Registration Opens Soon

Posted on by Mick

Plans for Consultants’ Day 2020 are in full swing, with an exciting keynote speaker identified for both events and a distance-learning option in place for the May conference.

The first of two Consultants’ Day conferences is scheduled for Wednesday, April 29 in Stevens Point at the Holiday Inn Convention Center. The second event will take place on Wednesday, May 13 in Pewaukee at the Ingleside (formerly the Country Springs). The Remediation and Redevelopment (RR) Program anticipates registration opening soon for both events. That announcement will be promptly shared via the RR Report and shared on the RR Program’s Conference & Training web page.

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Vapor Intrusion: DOD Utility Study, Resources in Spanish and Concerns with TCE

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DOD Utility Study

The DNR recently learned about a recent study on vapor migration within utilities. The study, funded by the Department of Defense Environmental Security Technology Certification Program (ESTCP), is titled Sewers and Utility Tunnels as Preferential Pathways for Volatile Organic Compound Migration into Buildings; Risk Factors and Investigation Protocol.

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