Vapor intrusion

Interstate Technology Regulatory Council Comprehensive Vapor Intrusion Mitigation Training June 2 and 14

Posted on by Jodie Thistle

The Interstate Technology Regulatory Council (ITRC) will offer online, comprehensive vapor intrusion training based on recent, technical guidance from the national group.

The upcoming live webinars will cover the purpose and use of the Dec. 2020 comprehensive web-based series of technical resources for Vapor Intrusion Mitigation.

Staff from the DNR’s Remediation and Redevelopment Program participated in the development of both the technical resources and training.

The training consists of a series of eight modules on the sections listed below and will be presented over two, two-hour sessions:

  • Thursday, June 2, 2022 (noon to 2 p.m. CST)
  • Tuesday, June 14, 2022 (noon to 2 p.m. CST)

Environmental professionals are encouraged to register and participate.

A link to the ITRC’s web-based document is posted on the DNR’s Vapor Intrusion Resources for Environmental Professionals website under the “Guidance and Forms” tab. This document includes an interactive directory that includes 10 fact sheets, 16 technology information sheets, and four checklists, covering the following topics specific to vapor intrusion mitigation:

  • Conceptual site model
  • Public outreach
  • Rapid response and ventilation (for acute risk)
  • Active mitigation
  • Passive mitigation
  • Remediation and institutional controls
  • Design considerations
  • Post installation considerations
  • Operation, maintenance and monitoring/exit strategy
  • Emerging technology

While the documents are designed to assist state regulators, they also serve to raise awareness with environmental consultants and other industry professionals.

The online sessions will be repeated on Nov. 3 and 15, 2022. If watching the training through on-demand video playback is preferred, you can find the same vapor intrusion trainings here.

Site-specific questions regarding vapor intrusion in Wisconsin should be directed to the assigned DNR Project Manager. General questions can be directed to the contacts listed on the DNR’s Vapor Intrusion Resources for Environmental Professionals website.

Wisconsin Vapor Quick Look-Up Table Updated

Posted on by Jodie Thistle

Updated publication RR-0136, Guidance: Wisconsin Vapor Quick Look-Up Table is now posted and available online.

The document can be found on the Vapor Intrusion for Environmental Professionals webpage. Additional documents and guidance from the Remediation and Redevelopment Program may be found using the search tools available on the publications and forms webpage.

The document lists select volatile organic compounds frequently encountered at remediation sites; it is updated periodically based on updates to inhalation toxicity data, generally semi-annually when the U.S. EPA updates its table (last updated in November 2021). Consultants should compare vapor data for open sites to the updated table for potential additional actions and should routinely reference the webpage for the most recent version.

The February 2022 version includes the removal of infrequently used chemicals:

  •  Methyl tert-Butyl Ether (MTBE),
  • 1,2,4-Trimethylbenzene (TMB),
  • 1,3,5-TMB, and
  • Xylene (m, o and p separately)

Consultants should compare vapor data for chemicals not available on Wisconsin’s Vapor Quick Look-Up Table directly to the U.S. EPA’s Vapor Intrusion Screening Level Calculator; instructions are included on Wisconsin’s Vapor Quick Look-Up Table.

Site-specific questions regarding vapor intrusion in Wisconsin should be directed to the assigned DNR Project Manager. General questions can be directed to the contacts listed on the DNR’s Vapor Intrusion Resources for Environmental Professionals webpage.

 

ITRC Vapor Intrusion Mitigation Training Jan. 13 & 27

Posted on by Jessica

The Interstate Technology Regulatory Council (ITRC) will offer online, comprehensive vapor intrusion training based on recent, technical guidance from the national group.

The upcoming live webinars will cover the purpose and use of ITRC’s comprehensive web-based series of technical resources for Vapor Intrusion Mitigation.

The training consists of a series of eight modules on the sections listed below and will be presented over two, two-hour sessions:

  • Jan. 13, 2022 (noon to 2 p.m. CST)
  • Jan. 27, 2022 (noon to 2 p.m. CST)

Registration is available on the ITRC’s training and events webpage.

A link to the ITRC’s Technical Resources for Vapor Intrusion Mitigation is also posted on the DNR’s Vapor Intrusion Resources for Environmental Professionals webpage under the “Guidance and Forms” tab near the bottom of the page. This comprehensive document includes an interactive directory that includes 10 fact sheets, 16 technology information sheets, and four checklists, covering the following topics specific to vapor intrusion mitigation:

  • Conceptual site model
  • Public outreach
  • Rapid response and ventilation (for acute risk)
  • Active mitigation
  • Passive mitigation
  • Remediation and institutional controls
  • Design considerations
  • Post installation considerations
  • Operation, maintenance and monitoring/exit strategy
  • Emerging technology

While the documents are designed to assist state regulators, they also serve to raise awareness with environmental consultants and other industry professionals.

The online sessions will be repeated on June 2 and June 14, 2022, and again on Nov. 3 and Nov. 15, 2022. The vapor intrusion trainings are also available on-demand.

Site-specific questions regarding vapor intrusion in Wisconsin should be directed to the assigned DNR Project Manager. General questions can be directed to the contacts listed on the DNR’s Vapor Intrusion Resources for Environmental Professionals webpage.

DNR’s RR Program Seeks Vapor Intrusion Expert In Southeast Region

Posted on by Mick

The Wisconsin Department of Natural Resources (DNR)’s Remediation and Redevelopment (RR) Program is recruiting a Vapor Intrusion Specialist in the DNR’s Southeast Region.

This position will serve as the RR Program’s regional coordinator for assessment of vapor intrusion of volatile compounds, mitigation and development of statewide policy related to vapor intrusion. This person will develop and interpret administrative rules, guidance documents and technical documents related to the assessment, mitigation and remediation of vapor phase contamination.

This position reports to the Complex Projects and Technical Resources Section Chief and will be located in the DNR’s Milwaukee office. The deadline to apply for this position is Jan. 2, 2022.

A full position description, including necessary qualifications, is available online at the Wisc.jobs website (Job ID number 3921).

New Community Resource For Vapor Intrusion Evaluation

Posted on by Mick

The Wisconsin Department of Natural Resources (DNR) is now offering an online resource tool for local governments, neighborhood associations and property owners to evaluate sources and minimize the risks of vapor intrusion from historical dry-cleaning operations in their communities.

For much of the 1900s, dry cleaning was a common business especially in Iarge cities where the service could be found on almost every commercial block. The disposal or spilling of cleaning solvents used by historical dry cleaners, long before current waste management laws were in effect, may have resulted in chemical vapors in the ground that can migrate into present-day buildings.

Continue reading “New Community Resource For Vapor Intrusion Evaluation” →

Reminder: Issues & Trends Webinar Next Week: Vapor Intrusion – Revised Guidance, Recent Training and Rule Reminders

Posted on by Mick

The Remediation and Redevelopment (RR) Program reminds you that the next webinar in the Issues & Trends series will take place next week, on November 16, 2021, from 12:00 p.m. to 1:00 p.m.

The scheduled presentation is: Vapor Intrusion – Revised Guidance, Recent Training and Rule Reminders.

Continue reading “Reminder: Issues & Trends Webinar Next Week: Vapor Intrusion – Revised Guidance, Recent Training and Rule Reminders” →

Issues & Trends Webinar on November 16, 2021: Vapor Intrusion – Revised Guidance, Recent Training and Rule Reminders

Posted on by Mick

The Remediation and Redevelopment (RR) Program reminds you that the next webinar in the Issues & Trends series will take place on Tuesday, November 16, 2021, from 12:00 p.m. to 1:00 p.m.

The scheduled presentation is: Vapor Intrusion – Revised Guidance, Recent Training and Rule Reminders.

Continue reading “Issues & Trends Webinar on November 16, 2021: Vapor Intrusion – Revised Guidance, Recent Training and Rule Reminders” →

Now Available – Guidance: Wisconsin Vapor Quick Look-Up Table and History of Changes to Vapor Action Levels (VAL), Vapor Risk Screening Levels (VRSL) and Attenuation Factors (AF) for Common Volatile Organic Compounds (VOC) in Wisconsin

Posted on by Mick

The publications Guidance: Wisconsin Vapor Quick Look-Up Table (RR-0136) and Guidance: History of Changes to Vapor Action Levels, Vapor Risk Screening Levels and Attenuation Factors for Common Volatile Organic Compounds (VOC) in Wisconsin (RR-0137) are now posted and available online.

The Guidance: Wisconsin Vapor Quick Look-Up Table (RR-0136) includes indoor air vapor action levels (VALs) and vapor risk screening levels (VRSLs) for volatile organic compounds frequently encountered at remediation sites. Important updates to note with the latest version include:

Continue reading “Now Available – Guidance: Wisconsin Vapor Quick Look-Up Table and History of Changes to Vapor Action Levels (VAL), Vapor Risk Screening Levels (VRSL) and Attenuation Factors (AF) for Common Volatile Organic Compounds (VOC) in Wisconsin” →

ITRC Comprehensive Vapor Intrusion Mitigation Training September 14 And 28

Posted on by Mick

The Interstate Technology Regulatory Council (ITRC) will again offer online, comprehensive vapor intrusion training based on recent, technical guidance from the national group.

The upcoming live webinars will cover the purpose and use of the December 2020 comprehensive web-based series of technical resources for Vapor Intrusion Mitigation.

Staff from the Wisconsin DNR’s Remediation and Redevelopment Program participated in the development of both the technical resources and training.

Continue reading “ITRC Comprehensive Vapor Intrusion Mitigation Training September 14 And 28” →

Now Available: Publication RR-649, Guidance for Documenting the Investigation of Human-made Preferential Pathways Including Utility Corridors

Posted on by Mick

Following a public comment period and consideration of the comments received, the publication RR-649, Guidance for Documenting the Investigation of Human-made Preferential Pathways Including Utility Corridors, is now posted and available online.

RR-649, formerly titled Guidance for Investigating Utilities, focused on investigating the migration of contamination in media along the exterior of utility corridors within the surrounding utility bedding. Current research indicates that contamination and vapors may migrate within utilities as well as other preferential pathways and the updated version of RR-649 reflects this new understanding. For additional information, please see the July 2020 Issues & Trends webinar, Vapor Intrusion: New Preferential Pathways, in the Remediation and Redevelopment Program’s training library.

Continue reading “Now Available: Publication RR-649, Guidance for Documenting the Investigation of Human-made Preferential Pathways Including Utility Corridors” →