RE: Wood Stove Study

["Jon Dettling" <dettling@glc.org>]

Steve,

I wanted to offer some clarification on the NEI b(a)p factors for fireplaces
and woodstoves. Their recommended emission factors in the 2002 NEI
documentation (http://www.epa.gov/ttn/chief/net/2002inventory.html) have
conventional fireplaces and woodstoves (SCCs 2104008002 and 2104008010) with
emission factors of 2.48E-3 lb/ton and certified units (SCCs 2104008003,
2104008004, 2104008030 and 2104008050) with factors ranging from 2.05E-3 to
2.42E-3. Therefore, while they do show certified units emitting less, it is
only by a very small margin. The MARAMA study does in fact have the
certified units emitting more than the non-certified.

Jon

______________________
Jon Dettling
Great Lakes Commission
734-971-9135
dettling@glc.org
-----Original Message-----
From: Jon Dettling [mailto:dettling@glc.org] 
Sent: Thursday, February 08, 2007 5:40 PM
To: 'Rosenthal.Steven@epamail.epa.gov'
Cc: 'airtoxics@great-lakes.net'
Subject: FW: Wood Stove Study

Steve,

Thanks for sending this. The information here certainly contradicts the set
of factors used in the MARAMA report and I believe also the set that is used
in the NEI guidance. I believe those factors were determined by taking the
average of a few different studies and it happened that the certified stove
amount ended up being higher. The numbers in this report show that there is
some overlap in the results, especially when considering different wood
types, but that the certified stoves emit about 5X-10X less b(a)p. It's very
interesting to see that their results show higher emissions for dioxins and
furans, but that's a separate matter.

I've posted this report at:
www.glc.org/air/Final-RWC-eng.pdf so that others in our group can see it.
It's a little too big to send by email. 

For our b(a)p report, I will come up with some language that assumes that
the certified stoves emit less b(a)p, but point out that there is some
discrepancy in this regard within some sets of emission factors. 

I would recommend that you look at the NEI guidance for this source category
and work with others at EPA to ensure that the set of factors they are using
for NEI and advising others to use adequately reflect that certified stoves
are less emitting. Otherwise, the affect of switching to certified stoves
would be an increase in the inventoried emissions of some compounds. Of
course, there is also the matter of seeing that efforts to change the stove
population are reflected in inventory population numbers, but that is a
separate matter.

Thanks again for this input.

Jon

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

-----Original Message-----
From: Rosenthal.Steven@epamail.epa.gov
[mailto:Rosenthal.Steven@epamail.epa.gov] 
Sent: Thursday, February 08, 2007 4:59 PM
To: Jon Dettling
Subject: Fw: Wood Stove Study

Jon,

The wood stove test results that  I mentioned at the meeting are
attached.  They show much better PAH, PM and VOC results with the EPA
certified stove.

Thanks again for your help.

Steve
----- Forwarded by Steven Rosenthal/R5/USEPA/US on 02/08/2007 03:56 PM
-----
                                                                        
             "Cianciarelli,Do                                           
             minic [ETC]"                                               
             <Dominic.Ciancia                                           
             relli@ec.gc.ca>                                         To 
                                      Steven Rosenthal/R5/USEPA/US@EPA  
             02/07/2007 06:44                                        cc 
             AM                       "Li,Victor [Ontario]"             
                                      <Victor.Li@ec.gc.ca>              
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                        
                                                                Subject 
                                      Wood Stove Study                  
                                                                        
                                                                        




Good morning Steven.

Attached please find the pdf version of the wood stove study conducted
in 2000.  The main purpose of the study was to compare the dioxin and
furan releases between a conventional and EPA-certified stove.  As
expected, the releases for the pollutants associated with incomplete
combustion (CO, particulate, VOCs and PAHs) were higher with the
conventional stove.  In contrast, we found higher dioxin and furan
releases for the EPA-certified stove.

Please contact me if you have any questions.

Regards

Dominic

Dominic Cianciarelli
Head, Source Measurement Section
Emissions Research and Measurement Division
Science and Technology Branch
Tel: 613-991-9457
Fax: 613-998-4032
E-mail: Dominic.Cianciarelli@ec.gc.ca
 (See attached file: Final-RWC-eng.pdf)

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