1. Information Session Pall Life Sciences 1,4-dioxane Contamination TOSC Program, SRSW and City of Ann Arbor August 4, 2004

2. TOSC Program University-based program—addresses science and engineering related to pollution problems University-based program—addresses science and engineering related to pollution problems National program, funded by U.S. EPA since 1994 National program, funded by U.S. EPA since 1994 Provide educational and technical assistance; directly address citizens concerns Provide educational and technical assistance; directly address citizens concerns Agreement with SRSW and City to provide services Agreement with SRSW and City to provide services Two goals: Shed light on extent of problem and catalyze effective public involvement Two goals: Shed light on extent of problem and catalyze effective public involvement

3. Contributions of TOSC Contributions: Independent review of key question community questions Contributions: Independent review of key question community questions Information on key concepts related to PLS dioxane problem Information on key concepts related to PLS dioxane problem Provide review/analysis to assist both community and regulatory agency Provide review/analysis to assist both community and regulatory agency

4. What brings us here tonight? Technical focus: TOSC has conducted an outside review of PLS and DEQ proposals Technical focus: TOSC has conducted an outside review of PLS and DEQ proposals Provide a means of further gathering community comments and questions. Provide a means of further gathering community comments and questions. Important now because of deadlines: Important now because of deadlines: Public comment period ends August 9 (MONDAY)Public comment period ends August 9 (MONDAY) September 1 MDEQ will announce its decisionSeptember 1 MDEQ will announce its decision September Court HearingSeptember Court Hearing

5. What has TOSC done? Conducted detailed review of PLS and MDEQ proposals Conducted detailed review of PLS and MDEQ proposals Made specific recommendations because of omissions in both proposals Made specific recommendations because of omissions in both proposals While TOSC generally approves of MDEQ’s plans, we will propose methods for strengthening them While TOSC generally approves of MDEQ’s plans, we will propose methods for strengthening them

6. Key Points Unusual for MDEQ to provide its own Remedial Alternative Unusual for MDEQ to provide its own Remedial Alternative The judicial process is an important factor The judicial process is an important factor Goal is to arrive at a solution that is “effective, protective and community acceptable” Goal is to arrive at a solution that is “effective, protective and community acceptable” Now is the time for your input Now is the time for your input

7. Your questions and comments Written down on white boards and easel pads Written down on white boards and easel pads Answered either through presentation or directly following presentation Answered either through presentation or directly following presentation Following problem definition, another opportunity for questions Following problem definition, another opportunity for questions

8. Contact Information Kirk Riley, TOSC Program Manager, Michigan State University (rileyki@egr.msu.edu) Kirk Riley, TOSC Program Manager, Michigan State University (rileyki@egr.msu.edu) Dr. Susan Masten, Professor of Environmental Engineering, MSU (masten@egr.msu.edu) Dr. Susan Masten, Professor of Environmental Engineering, MSU (masten@egr.msu.edu) Dr. Larry Lemke, Senior Lecturer, Wayne State University (ldlemke@wayne.edu) Dr. Larry Lemke, Senior Lecturer, Wayne State University (ldlemke@wayne.edu) TOSC Program Michigan State University East Lansing, MI 48824 (800) 490-3890