Conference Call Minutes from December 4, 2002

State Coalition for Remediation of Drycleaners Conference Call

State Coalition for Remediation of Drycleaners
Conference Call

December 4, 2002

Conference Call Participants

• Larry Norris Alabama
• Pam Wilson Alabama
• Leslie Laudon California
• William Linn Florida
• Doug Fitton Florida
• Pat Eriksen Illinois
• Leo Henning Kansas
• Bob Jurgens Kansas
• Dale Trippler Minnesota
• Kären Kromar Minnesota
• Jim Belcher Missouri
• Delonda Alexander North Carolina
• Scott Stupak North Carolina
• Dick DeZeeuw Oregon
• Lisa Appel South Carolina
• Jim Gilbert Tennessee
• Steve Goins Tennessee
• Barbara Pyles Tennessee
• Jay Carsten Texas
• Robin Schmidt Wisconsin
• Jeff Soellner Wisconsin

Also participating in the State Coalition for Remediation of Drycleaners (SCRD) conference call were Richard Steimle from the U.S. Environmental Protection Agency (EPA), Cheryl Joseph from the National Ground Water Association, and Sarah Dun from Eastern Research Group, Inc.


Introduction
Dick DeZeeuw opened the call by introducing Jay Carsten, a representative from the Texas Commission on Environmental Quality. DeZeeuw said that SCRD is eager to form a relationship with Texas and to learn about the approach Texas is using to address contaminated drycleaner sites.


Site Profiles
Richard Steimle initiated a discussion on SCRD's Site Profile Project. (The profiles provide information about contaminated drycleaning sites, including information on hydrogeology, contaminants, assessment and remediation strategies, and lessons learned.) The conversation focused on three topics:

Steimle concluded the discussion by saying that the site profiles are one of the SCRD's gems. He encouraged SCRD members to continue efforts to refine the database.


Program Development/Administration Subgroup

Steve Goins said that the Subgroup's main focus is to develop the "Component Project." Efforts will be made to create some text before the spring 2003 SCRD meeting.


Technical Issues Subgroup

Jurgens said that questionnaires are being distributed across the country to obtain information on assessment and remediation technologies. The questionnaires will be collected by December 31, 2002. Linn said that the Subgroup recently released a draft paper entitled "Conducting Contamination Assessments at Drycleaner Sites." He asked SCRD members to comment on the paper by December 16, 2002.


Outreach Subgroup

Robin Schmidt said that the Outreach Subgroup designed an SCRD business card.


Next SCRD Meeting

A 3-day SCRD meeting will be held in San Francisco, California, during the week of April 7, 2003. Laudon said that she will identify some California state representatives to speak at the meeting. For example, she will invite someone from the Santa Clara Valley Water District to speak about a drycleaning study. She will also identify someone from the South Coast Air Quality Management Division to speak on tetrachloroethene (PCE) bans. Laudon will also try to identify a site for a technology demonstration project. Jurgens agreed to work with Laudon to select the vendors; he asked SCRD members to submit suggestions on technologies that they would like to see demonstrated. (During the call, Jurgens expressed interest in a geoprobe demonstration. Linn expressed interest in demonstrating direct-push wells.) Trippler recommended placing the technical demonstrations at the beginning or the end of the meeting agenda. That way, people who are not interested in attending that part of the meeting could reduce their travel costs by arriving late or leaving early.


Texas--an Overview of Drycleaner Issues and Remediation Efforts

Carsten said that 335 drycleaning sites have been addressed through Texas' Voluntary State Cleanup program. Final or conditional closure has been achieved at 100 of these sites, he said, and investigation/remediation activities are ongoing at 235 sites. Of those that have been closed, Carsten said, few--if any--have achieved drinking water standards. Nevertheless, he said, these sites have been approved for final closure because they had low contaminant concentrations to start with, or had extremely low ground-water yields and were situated in places where state officials agreed to accept less conservative cleanup goals. Carsten noted that drycleaner-related contaminants have impacted private wells at a couple of sites. Filters have been installed in these wells.

Carsten said that a variety of technologies have been used to address drycleaning sites in Texas. Monitored natural attenuation (MNA) has been used, but it has not been a panacea. In fact, at many sites where MNA has been used, site investigators have experienced difficulty documenting stable trends. Chemical oxidation technologies are also being used in Texas, Carsten said, but rebound has been a problem at several sites. Carsten described two issues that Texas is currently struggling with: (1) determining what level of effort is needed to address the indoor air vapor intrusion exposure pathway, and (2) determining whether drycleaner contaminants are impacting municipal water lines. Carsten said that additional information about Texas' Voluntary Cleanup Program can be found at http://www.tceq.state.tx.us.


Miscellaneous Topics
Call participants discussed the following miscellaneous topics: