Vapor intrusion

Issues & Trends Webinar On Oct. 25, 2023: Vapor Intrusion In Wisconsin – 2023 Updates

Posted on by jirland

The Remediation and Redevelopment (RR) Program’s next webinar in the Issues & Trends series will take place on Wednesday, Oct. 25, 2023, from noon-1 p.m.

The scheduled presentation is titled Vapor Intrusion in Wisconsin – 2023 Updates and will be followed by time for questions.

  • Active Alarms – Overview of long-term stewardship of vapor mitigation systems in Wisconsin
  • Vapor Intrusion Resources for Local Governments – Debut of a new vapor intrusion webpage resource for local governments
  • Technical Updates on Passive Sampling, Sewers, Cracks and other Pathways – Updates and lessons learned on topics including result variability, passive sorbent sampling, conduit VI and other preferential pathways, real-time sampling, investigation at new and renovated buildings in contaminated settings, rapid response mitigation and state funded vapor investigations.

A Zoom web conferencing registration link may be found on the RR Program’s Conferences and Training webpage.

Recordings of previous Issues & Trends webinars may be found in the RR Program’s Training Library.

Now Available: Publication Guidance: Wisconsin Vapor Quick Look-Up Table Indoor Air Vapor Action Levels and Vapor Risk Screening Levels (RR-0136)

Posted on by jirland

The publication Guidance: Wisconsin Vapor Quick Look-Up Table Indoor Air Vapor Action Levels and Vapor Risk Screening Levels (RR-0136) is now updated and available online. There were no changes to the Vapor Action Levels (VALs) or Vapor Risk Screening Levels (VRSLs) for the compounds listed.

The document can be found here. 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 purpose of the guidance is to list volatile organic compounds frequently encountered at cleanup sites in Wisconsin. Consultants should compare vapor data for open sites to the updated table for potential additional actions. Vapor data for chemicals not listed on RR-0136 should accessed via the U.S. Environmental Protection Agency Vapor Intrusion Screening Level (VISL) Calculator; instructions on using VISL are included in RR-0136.

Questions regarding this document may be submitted to Jennifer Borski at Jennifer.Borski@wisconsin.gov.

DNR To Hold Remediation And Redevelopment External Advisory Group Subgroup Meetings

Posted on by jirland

The Wisconsin Department of Natural Resources (DNR) will host Remediation and Redevelopment External Advisory Group (RR EAG) subgroup meetings on Thursday, Sept. 7, 2023.

The RR EAG was formed to address a broad range of issues, encompassing both technical and policy topics related to encouraging the investigation, cleanup and redevelopment of contaminated sites in Wisconsin.

The RR EAG identifies issues and topics of interest that may be addressed by ad hoc subgroups. Subgroup members are expected to research and develop recommendations on the selected topics for presentation to the full group. RR EAG subgroup meetings are open to the public.

Where:
State Natural Resources Building (GEF 2)
Rm. G-27
101 S. Webster St.
Madison, WI

Please check-in at the security desk before taking the elevator.

In-person attendees should RSVP to Jody.Irland@wisconsin.gov by noon on Wednesday, Sept. 6, 2023.

When:

* A subgroup focused on Vapor Intrusion was proposed during the July RR EAG meeting. The initial RR EAG Vapor Intrusion subgroup meeting will focus on drafting a work plan that may include outcomes such as:

    • Awareness of vapor intrusion risks and reduced exposure to humans
    • Long-term stewardship of vapor mitigation systems
    • Increased identification of high risk vapor intrusion sites
    • Increased coordination with partners/stakeholders at sites with risk of exposure to vapor intrusion

Visit the DNR’s RR EAG webpage for meeting agendas, materials and additional information. Subscribe for updates on future RR EAG meetings.

New Vapor Intrusion-Focused Subgroup For DNR’s Remediation And Redevelopment External Advisory Group

Posted on by jirland

The Wisconsin Department of Natural Resources (DNR) Remediation and Redevelopment Program External Advisory Group (RR EAG) has added a new subgroup focused on Vapor Intrusion.

The DNR’s RR Program oversees the investigation and cleanup of environmental contamination and the redevelopment of contaminated properties. The RR EAG and its subgroups (Vapor Intrusion, Environmental Justice, NR 700, Funding Sustainability, Contaminated Sediments) were formed to address a broad range of issues, encompassing both technical and policy topics related to encouraging the investigation, cleanup and redevelopment of contaminated sites in Wisconsin.

A subgroup focused on Vapor Intrusion was proposed during the July RR EAG meeting.

The first meeting of the RR EAG Vapor Intrusion subgroup will be Thursday, Sept. 7, 2023.

The initial RR EAG Vapor Intrusion subgroup meeting will focus on drafting a work plan that may include outcomes such as:

  • Awareness of vapor intrusion risks and reduced exposure to humans
  • Long-term stewardship of vapor mitigation systems
  • Increased identification of high-risk vapor intrusion sites
  • Increased coordination with partners/stakeholders at sites with risk of exposure to vapor intrusion

When:
Thursday, Sept. 7, 2023
2-3:30 p.m.

Where:
State Natural Resources Bldg. (GEF 2)
Rm. G-27
101 S. Webster St.
Madison, WI

In-person attendees should RSVP to Jody.Irland@wisconsin.gov by noon on Wednesday, Sept. 6, 2023.
Join us via Zoom – Zoom attendance registration.

All meetings are open to the public and we encourage you to share this invite with those who you think may be interested. Visit the DNR’s RR EAG webpage for meeting agendas, materials and additional information. Subscribe for updates on future RR EAG meetings.

ITRC Vapor Intrusion Mitigation Training Series On June 1 And June 6

Posted on by jirland

The Interstate Technology Regulatory Council (ITRC) will offer online vapor intrusion training over two sessions on June 1 and June 6, 2023.

Environmental professionals are encouraged to register at the CLU-IN Vapor Intrusion Mitigation webpage.

The Vapor Intrusion Mitigation training series provides an overview of vapor intrusion mitigation and presents information on how to utilize the ITRC’s Vapor Intrusion Mitigation Interactive Directory. The interactive directory includes up-to-date fact sheets, technology information sheets and checklists. DNR staff participated in the development of both the technical resources and training.

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

Session 1 – June 1, 2023 | Noon-2 p.m.
Topics Include:

  • Introduction and overview of vapor intrusion mitigation training team
  • Conceptual site models for vapor intrusion mitigation
  • Public outreach during vapor intrusion mitigation
  • Rapid response and ventilation for vapor intrusion mitigation
  • Remediation and institutional controls

Session 2 – June 6, 2023 | Noon-2 p.m.
Topics Include:

  • Active mitigation approaches
  • Passive mitigation approaches
  • System verification, OM&M and exit strategies

 

ITRC Vapor Intrusion Mitigation Training Series On Feb. 14 And Feb. 21

Posted on by jpeotter

The Interstate Technology Regulatory Council (ITRC) will offer online vapor intrusion training over two sessions on Feb. 14 and Feb. 21, 2023.

The Vapor Intrusion Mitigation training series provides an overview of vapor intrusion mitigation and presents information on how to utilize the ITRC’s Vapor Intrusion Mitigation Interactive Directory. The interactive directory includes up-to-date fact sheets, technology information sheets and checklists. DNR staff participated in the development of both the technical resources and training.

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

Session 1 – Feb. 14, 2023, noon-2:00 p.m. CST
Topics Include:

  • Introduction and overview of vapor intrusion mitigation training team
  • Conceptual site models for vapor intrusion mitigation
  • Public outreach during vapor intrusion mitigation
  • Rapid response and ventilation for vapor intrusion mitigation
  • Remediation and institutional controls

Session 2 – Feb. 21, 2023, noon-2 p.m. CST
Topics Include:

  • Active mitigation approaches
  • Passive mitigation approaches
  • System verification, OM&M and exit strategies

Environmental professionals are encouraged to register at the CLU-IN Vapor Intrusion Mitigation webpage.

The online sessions will repeat in June 2023. This training is also available on-demand at the CLU-IN Vapor Intrusion Mitigation archive.

Now Available– 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 in Wisconsin (RR-0137)

Posted on by jpeotter

Updated publications Guidance: Wisconsin Vapor Quick Look-Up Table Indoor Air Vapor Action Levels and Vapor Risk Screening Levels (RR-0136) and Guidance: 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 (RR-0137) are now posted and available online.

Guidance: Wisconsin Vapor Quick Look-Up Table Indoor Air Vapor Action Levels and Vapor Risk Screening Levels (RR-0136)
RR-0136 lists volatile organic compounds frequently encountered at cleanup sites. The update includes vapor action and screening levels for cis-1,2-dichloroethylene (cis-1,2-DCE) based on updates to the U.S. Environmental Protection Agency (EPA) Regional Screening Levels.

Action and screening levels for cis-1,2-DCE should now be added to summary vapor data tables and exceedances noted. Consultants should compare vapor data for open sites to the updated table for potential additional actions. Vapor data for chemicals not available on RR-0136 should accessed via the U.S. EPA’s Vapor Intrusion Screening Level (VISL) Calculator; instructions on using VISL are included in RR-0136.

Guidance: 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 (RR-0137)
RR-0137 is a quick reference to historical VAL, VRSL and AF values for VOCs, with dates when changes occurred. This document is intended to help users understand the basis for past decisions at sites.

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 are listed on the DNR Vapor Intrusion Resources for Environmental Professionals webpage.

Additional documents and guidance from the Remediation and Redevelopment Program may be found using the search tools available on the DNR publications and forms webpage.

 

RR Program Seeks Vapor Intrusion Expert

Posted on by jpeotter

The Remediation and Redevelopment (RR) Program is recruiting a Vapor Intrusion Expert.

This position will be stationed out of a DNR office within the state based on the applicant preference and space availability. The deadline to apply is Sept. 7, 2022.

This is a Project position that will be expected to end on July 31, 2026. Project positions are eligible for benefits including health insurance, but the incumbent does not attain civil service status.

The Vapor Intrusion Expert provides geologic and hydrogeologic expertise and oversight for inventory, assessment and remediation of dry cleaner and vapor contamination sites. The position focuses on vapor intrusion risk assessment and reduction of volatile compound contamination statewide. The Vapor Intrusion Expert serves as a RR Program technical resource for agency staff and external parties on assessment of vapor intrusion, evaluation of mitigation plans, approval, notification and tracking methods, and long-term stewardship for locations with mitigation systems installed or other protective measures in place.

A full position description, including necessary qualifications, is available online at the Wisc.jobs website (Job ID number 7424).

Vapor Mitigation Update: DNR To Present At DHS Wisconsin Radon Conference Sept. 28, 2022

Posted on by jpeotter

DNR staff will present at the Wisconsin Department of Health Services (DHS) Wisconsin Radon Conference in Marshfield on Sept. 28, 2022. The DNR’s presentation will include information on the health risks from chemical vapor intrusion, including the similarities and differences between chemical vapor intrusion and naturally occurring radon.

Conference attendees will have an opportunity to refresh their knowledge base on indoor air quality and radon, gain understanding of current and emerging issues and network to improve statewide collaboration. This conference is intended for soil gas mitigators, state and local health departments, contractors, nonprofits and home inspectors.

Environmental consultants who hire soil gas mitigators for environmental cases are encouraged to share this continuing education opportunity with their contractors. There is overlap in both health risks and solutions to mitigate exposure from chemical vapor intrusion and naturally occurring radon.

The DNR values partnering with the DHS and local health departments regarding risks to human health from environmental contamination.

More information on the one-day conference and a pre-conference training opportunity is available here.

Now Available: Publication RR-0136, Guidance: Wisconsin Vapor Quick Look-Up Table

Posted on by jpeotter

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. 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 basis for the U.S. EPA Regional Screening Levels were updated in May 2022; the update does not include revisions to action or screening levels.

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.