Gelman Sciences Dioxane Project;
Ann Arbor, MI

Community Meetings

March 24, 2004

On Wednesday, March 24, 2004, the Technical Outreach Services for Communities (TOSC) held a public information meeting sponsored by Scio Residents for Safe Water (SRSW) and the City of Ann Arbor. During this meeting Susan Masten, Ph.D., Professor of Environmental Engineering, at Michigan State University, presented information about the treatment options Pall is proposing and important considerations with those treatment options, focusing particularly on the injection of hydrogen peroxide into the Unit E aquifer. Larry Lemke, Ph.D., Senior Lecturer at Wayne State University presented information on the hydrogeology of the aquifer system with emphasis on the extent of the E-plume, where the gaps in understanding are, and how the plume could be modeled. Along with the presentations by Drs. Masten and Lemke, TOSC provided other informational materials. These were: (to view click each document):

• The TOSC Community Outreach Plan
• TOSC review of “Work Plan Testing of In-Situ Oxidation for the Treatment of 1,4-Dioxane at the Pall Life Sciences Facility,” written by Dr. Susan Masten
• A glossary of terms associated with the Pall Project
• A factsheet for 1,4-dioxane
• A factsheet for chemical oxidation for groundwater remediation

Powerpoint presentations were given by:

• Dr. Susan Masten - Click here to view presentation slides in powerpoint or html format
• Dr. Larry Lemke - Click here to view presentation in pdf format
• Kirk Riley - Click here to view presentation slides in powerpoint or html format

Click on each name below to view a video (for dial-up) of each presenter in order of appearance:

To download, right click on "File size " and select "Save target as" to save the file
on to the desktop for high quality video (broadband)

File Name	Stream online	Download real video	Download wmv
Matt Naud	-	-	File size: 8 MB
Roger Rayle	View now	File size: 645 KB	File size: 4 MB
Kirk Riley	View now	File size: 5.4 MB	File size: 26 MB
Dr. Larry Lemke	View now	File size: 13 MB	File size: 85 MB
Dr. Susan Masten	View now	File size: 14 MB	File size: 89 MB
Dr. Lemke's Recommendations	View now	File size: 5.1 MB	File size: 38 MB

At the meeting, MDEQ representatives requested written comments from Dr. Masten on her concerns over the in-situ injection of hydrogen peroxide by PLS. On April 2, Dr. Masten submitted comments on behalf of the TOSC Program. Those comments can be viewed by clicking here (word doc, pdf).

In response to TOSC’s comments, MDEQ submitted a letter to PLS, indicating the need for additional monitoring during the injection. MDEQ’s letter can be read by clicking here (word doc, pdf).