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Presentations May 23 – 25, 2005 Portland, Maine For related information visit:

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1 Presentations May 23 – 25, 2005 Portland, Maine For related information visit: http://www.newmoa.org/prevention/mercury/conferences

2 Demonstration of the EPA Region 5 Tool for Assessing the Potential Impacts of Various Mercury-added Products & Wastes Alexis Cain, US Environmental Protection Agency, Region 5 Achieving Mercury Reductions in Products and Wastes, Portland, ME, May 25, 2005

3 Mercury Product Life-Cycle Release Estimation Project Minnesota PCA (Ed Swain)/Barr Engineering (Carol Andrews, Bruce Monson)– estimates for MN in 2001– Used to improve MPCA mercury emissions inventories Wisconsin DNR/Barr/Dane County– adapted for WI in 2003-2004 2004-5; EPA Region 5, WDNR (Randy Case), Barr (John Reindl), Barr (Cliff Twaroski, Sarah Disch) develop national estimates

4 Life-Cycle Mercury Flow Approach Mass Balance Spreadsheets Distribution Factors Release Factors Estimated releases to air, water, land in 1990, 2000, 2005-10 Mercury used in products is released, recycled, or added to inventory

5 Products Covered Dental amalgam Fluorescent lamps, other lamps Bulk liquid mercury Switches and relays Auto switches Thermostats Measurement and Control Devices Thermometers Batteries– a back of the envelope analysis Did not evaluate chemicals, fungicides

6 Ways the Tool Could be Improved Include more product sub-categories Update mercury use data Improve release factors Zinc production, auto shredders Land application of biosolids WWTP mercury removal (especially for dental amalgam) Dental office vacuum system, exhalation Breakage by consumers, in transport

7 Cautions Adaptations are encouraged, but: Need to follow through the spreadsheets carefully to ensure that impact of changes flows through spreadsheets in a realistic way In many cases, mercury inputs and outputs are calculated separately Provide documentation

8 Collaboration How best to allow interested parties to work with the spreadsheets and improve them, while coordinating and tracking these changes Suggestions welcomed!

9 Alexis Cain USEPA-Region 5 (312) 886-7018 cain.alexis@epa.gov


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