RE: Residential Wood Combustion Update

Orlando,

Thanks for tracking this issue. I think there are two things to discuss here separately: one is how this impacts the b(a)p assessment we’re currently doing for 2002 data. The other is how to include this information in 2005 and beyond. After looking at the report briefly, I think there is certainly some valuable information that we’ll want to adopt for future inventories. I recommend we use this document to do a revision of our group’s guidance document for this category. It will certainly affect many pollutants other than b(a)p.

For the b(a)p assessment, I think there are several options. It’s fortunate that the two states of our group included in the MARAMA report and dataset are the two who were outliers for this category in our original data. New York, at 20,540 lbs, was well above the level of other states. Pennsylvania showed no emissions from these states. In MARAMA’s dataset, these two states have total emissions of 3658 and 2819lbs b(a)p, respectively. This compares well with the 1048-3806 lbs. that the other seven jurisdictions have reported initially. At the very least, I think it would benefit our b(a) assessment to include the MARAMA data for these two states.

If we want, I think there are two other options that would provide some additional consistency in methodology and emission factors. In the attached table, I’ve compared the emission factors that MARAMA has decided on with those in the NEI guidance, which is what our group included in our latest edition of the guidance for this source category. For the different categories, the MARAMA emission factors range from 2/3 to nearly double those in the NEI. To increase consistency, two other options would be to either correct the PA and NY MARAMA data to reflect the NEI factors, or correct the other state/province’s data to reflect the MARAMA factors. In addition, there is an emission factor in MARAMA’s report for fireplaces without inserts, which wasn’t in the NEI guidance.

We should discuss how to handle this as a group. Simply including the MARAMA data for PA and NY is a viable option and I think would be a big improvement for the regional b(a)p report.

Regards,

Jon

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

From: owner-airtoxics@great-lakes.net [mailto:owner-airtoxics@great-lakes.net] On Behalf Of Cabrera-Rivera, Orlando
Sent: Wednesday, August 23, 2006 10:58 AM
To: Airtoxics
Subject: FW: Residential Wood Combustion Update

Hello! Below is a link to MARAMA's residential wood combustion study documents. Technical Memorandum #2 includes the emission factors for different kinds of combustion devices. Table 2.3.1 has the factors for conventional fireplaces, and includes B(a)P. Please take a look at the document and let's discuss the possibility of using these emission factors. We may also want to discuss using the emission factors for other HAPs, and combustion types as well.

Thanks,

Orlando

From: Angela Crenshaw [mailto:acrenshaw@marama.org]
Sent: Tuesday, August 15, 2006 11:09 AM
To: Cabrera-Rivera, Orlando
Subject: FW: Residential Wood Combustion Update

See below…

From: Angela Crenshaw [mailto:acrenshaw@marama.org]
Sent: Tuesday, August 15, 2006 11:07 AM
To: 'Judy Rand'; 'Walter Simms'; 'Doug Austin'; 'Karen' 'Gee'; 'Nancy Herb'; 'Lisa Rector'; 'Andy Bodnarik'; 'Anne McWilliams'; 'Bill Simpson'; 'Bob Boisselle'; 'Bob McConnell'; 'Brian Hug'; 'Chris Hogrefe'; 'Chris Mulcahy'; 'Craig Woleader'; 'Dan Van Orden'; 'David Fees'; 'David Healy'; 'David W Wright'; 'Deirdre Elvis'; 'Diane Franks'; 'Eric Zalewsky'; 'Gopal Sistla'; 'Jack Sipple'; 'James Ralston'; 'Janet Kremer'; Jeff Merrell; 'Jung-Hun Woo'; 'Karen Slattery'; 'Ken Santlal'; 'Mike Fitzgerald'; 'Pat Davis'; 'Paul Bodner'; Paul Wishinski; rama.tangirala@dc.gov; 'Ray Papalski'; 'Raymond Forde'; 'Roger Thunell'; 'Tammy Gould'
Cc: 'Angela Crenshaw'
Subject: Residential Wood Combustion Update

Hello All,

Due to an error in some of OMNI’s data, revisions have been made to portions of Technical Memorandums 1 and 2. Thanks to the keen eyes of David Fees, OMNI realized that the treatment of zeros was not done correctly and have revised portions of Technical Memorandums 1 and 2 to reflect the change in average burn rates that this has caused. The Pechan database was not interpreted correctly and the burn rate averaged across all households reporting having a wood-burning device rather than across only households that report using their wood-burning device was erroneously used. This has a small but real effect on the emission inventory (20% to 30%). Compliments to David Fees for going through the documents in enough detail to find this mistake.

The following revised documents will be placed on the Residential Wood Combustion Section of the MARAMA website (http://www.marama.org/visibility/ResWoodCombustion/):

1- Technical Memorandum 1 (the Activity Data) database and report

2- Technical Memorandum 2 ( the Emissions Inventory) database and report

3- Technical Memorandum 2 ( the Emissions Inventory) in SMOKE and NIF 3.0 format

4- A new set of comment responses from 7/28 and 8/1

Let me know if there are any questions. Regards,

Angie

=====

Angela Crenshaw

Environmental Planner

Mid-Atlantic Regional Air Management Association

711 West 40th Street, Suite 312

Baltimore, Maryland 21211-2109

Phone: (410) 467-0170

Fax: (410) 467-1737

website: www.marama.org