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RE: BaP from forest wildfires

Cong,

 

If this report was just released in October, that would explain why the group had not yet had a chance to take account of this new emission factor. Most of the data compilation was completed before that. If you feel the quality of this factor is better than the previous one, you are welcome to update your numbers. If you can get the changes to me within the next few days, there would be time to incorporate those changes in the report without needing to delay the report release. For the report, all I need is a summary of the changes by SCC for your entire province. Eventually (when the server is back up), we would need to update the repository so that it is consistent. For that you would need the usual import files.

 

The other states reporting wildfire emissions for the b(a)p report were Illinois, Michigan, New York and Wisconsin. Each had much smaller emissions (2 to 65 pounds) than Ontario (3736 pounds), which makes some sense considering the amount of forest in Ontario. The remaining states either did not include this category or did not have any fire activity to report. If any of the other states would like to revise their forest fire emissions based on this new factor, they are welcome to. Please let me know very soon, so that I can begin making the changes to the report text, tables and figures.

 

Thanks, Jon

______________________
Jon Dettling
Great Lakes Commission
734-971-9135
dettling@glc.org

From: Cong Doan [mailto:doanco@rogers.com]
Sent: Thursday, February 15, 2007 2:52 PM
To: Jon Dettling
Cc: Peter Wong
Subject: BaP from forest wildfires

 

Jon,

 

There are some changes in estimation of Benzo(a)pyrene emission from forest wildfires.

 

The estimates for Benzo(a)pyrene from forest wildfire in NEI 2002 version 2 (released in October 2006?) is much lower than the estimates from GLC Emissions Assessment of Benzo(a)pyrene in the Great Lakes Region report. I do not know exactly which emission factor was used in EPA report. However, I found other document from USEPA website which had emission factor for BaP which is 1.3E-4 kg/Mg (2.6E-4 lb/ton). This emission factor is about 6 times smaller than the one Ontario and few other states used (1.48E-03 lb/ton). USAEP has a disclaim statement which states it has not reviewed the document yet…

 

Ontario BaP emission from wildfires would drop to 656 lb from 3,736 lb. Please look into that. Thanks.

 

Here are the links:

 

 

 

Cong,