----- Forwarded by Melanie King/RTP/USEPA/US on 12/07/2009 02:11 PM
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  |"Suchecki, Joe" <JSuchecki@ngelaw.com>                                                                                                    
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  |Melanie King/RTP/USEPA/US@EPA                                                                                                             
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  |12/07/2009 12:20 PM                                                                                                                       
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  |RE: EMA Recommendation on Reducing Crankcase Blow-by emissions                                                                            
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Melanie,

It is really a combination of all the items you mentioned.  First, technically 
one can certainly set up a sampling scheme to measure metals in exhaust or 
blow-by, but the accepted and approved engine method is generally completed 
under laboratory dynamometer conditions and requires the use of a dilution 
tunnel. Since virtually all older and in-use engines do not vent the crankcase 
to the exhaust, if you want to measure both exhaust and crankcase emissions,  
you would have to sample the exhaust and the blow-by separately or devise a 
system to vent the blow-by to the exhaust during sampling.

Second, the sampling and analysis scheme that is needed to determine metallic 
HAP content is very expensive.  Essentially you have to collect the metal 
samples from the exhaust on filters and then have the filters analyzed in 
laboratories that have the appropriate analysis equipment.
Analysis methods include using extraction techniques and ICP/MS or ED
XRF analysis   .  Although I do not have specific information, these
methods are relatively expensive compared to normal criteria pollutant 
sampling.

Third, the above methods are necessary in order to achieve the needed 
detection limits for the levels of metals emitted from engines.  The amount of 
metallic emissions produced is very low, and so sampling times are long and 
methods with very low detection limits must be used.
Depending on the engine, individual metal concentrations are likely on the 
order of 10-3 to 10-7 g/bhp-hr. Such very low limits require expensive 
sampling and analytical methods to obtain reliable and acceptable results.

Measurement of metals from in-use engines in the field is problematic and 
expensive due to the methods involved, expense in extracting and analyzing for 
the large number of potential metallic HAPs, and the low levels of metals 
normally emitted.  We believe it would  be impractical and cost prohibitive to 
require the many thousands of owners/operators to complete metals testing for 
all of the in-use stationary diesel engines in the country.

I'm attaching a recent paper that looked at emissions from a 2004 and
2007 engine that includes metals.  Jamie Schauer at University of Wisconsin 
would be a good person to contact about testing methods and costs for metals 
in engines.

Joe Suchecki
Director, Public Affairs
Engine Manufacturers Association
Two North LaSalle Street, Suite 1700
Chicago, IL 60602
Tel:  312-827-8734
Fax:  312-827-8737
jsuchecki@emamail.org
www.enginemanufacturers.org

Confidentiality Notice:  This communication is confidential and may contain 
privileged information.  If you have received it in error, please notify the 
sender by reply e-mail and immediately delete it and any attachments without 
copying or further transmitting the same.


All attachments are MS Office XP and are MIME encoded.  If you have any 
software compatibility issues, please contact EMA at (312) 827-8700 
immediately.



-----Original Message-----
From: King.Melanie@epamail.epa.gov [mailto:King.Melanie@epamail.epa.gov]

Sent: Monday, December 07, 2009 9:31 AM
To: Suchecki, Joe
Subject: RE: EMA Recommendation on Reducing Crankcase Blow-by emissions

Thanks Joe.  Can you elaborate on why it isn't feasible to measure the 
emissions - for example is it because they aren't all emitted from the engine 
exhaust pipe, or because the test method is difficult and/or expensive to 
perform, or the emissions are so low that they might be below detection limit?

Melanie King
Energy Strategies Group
Sector Policies and Programs Division
Office of Air Quality Planning and Standards U.S. Environmental Protection 
Agency

Mail Code D243-01
RTP, NC  27711

Phone:  (919) 541-2469
Fax:       (919) 541-5450
king.melanie@epa.gov


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  |12/07/2009 10:27 AM
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  |RE: EMA Recommendation on Reducing Crankcase Blow-by emissions
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We talked about that, and there is no simple way to measure the metallic 
emissions.  It would be difficult and expensive to get quantitative data on 
the metallic HAPs.  That is why we made the statements that reducing the 
amount of oil will also reduce the metallic HAP emissions - so that the oil 
mist can essentially serve as a surrogate for metallic HAPS.
The 60-80 percent removal efficiency for oil would result is a similar or 
larger reduction in metallic HAPS from the blow-by emissions.

We do not think it is economically feasible to require owners and operators to 
measure metal emissions from existing engines in the field.


Joe


Joe Suchecki
Director, Public Affairs
Engine Manufacturers Association
Two North LaSalle Street, Suite 1700
Chicago, IL 60602
Tel:  312-827-8734
Fax:  312-827-8737
jsuchecki@emamail.org
www.enginemanufacturers.org

Confidentiality Notice:  This communication is confidential and may contain 
privileged information.  If you have received it in error, please notify the 
sender by reply e-mail and immediately delete it and any attachments without 
copying or further transmitting the same.


All attachments are MS Office XP and are MIME encoded.  If you have any 
software compatibility issues, please contact EMA at (312) 827-8700 
immediately.



-----Original Message-----
From: King.Melanie@epamail.epa.gov [mailto:King.Melanie@epamail.epa.gov]

Sent: Monday, December 07, 2009 9:18 AM
To: Suchecki, Joe
Subject: Re: EMA Recommendation on Reducing Crankcase Blow-by emissions

Hi Joe,
Thanks so much for your letter, we really appreciate your quick response to 
our questions on this issue.  One of the things that we talked about was the 
difficulty in measuring the metallic HAP emissions - I didn't see any mention 
of that issue in your letter, so I wanted to check and see if you had any 
comment on that issue.

Melanie King
Energy Strategies Group
Sector Policies and Programs Division
Office of Air Quality Planning and Standards U.S. Environmental Protection 
Agency

Mail Code D243-01
RTP, NC  27711

Phone:  (919) 541-2469
Fax:       (919) 541-5450
king.melanie@epa.gov


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  |12/04/2009 04:01 PM
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  |EMA Recommendation on Reducing Crankcase Blow-by emissions
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TO:        Melanie King
                US EPA

FROM:    Joe Suchecki
                 EMA

DATE:     December 4, 2009

RE:          Reducing Crankcase Blowdown Emissions from Existing CI
Stationary Engines


    Per your request during our recent teleconference, EMA is submitting the 
attached letter with information and a recommendation regarding the reduction 
of crankcase blow-by emissions form existing stationary CI engines.

    Please do not hesitate to call me if you have additional questions.



Joe Suchecki
Director, Public Affairs
Engine Manufacturers Association
Two North LaSalle Street, Suite 1700


Chicago, IL 60602


Tel:  312-827-8734
Fax:  312-827-8737
jsuchecki@emamail.org
www.enginemanufacturers.org

Confidentiality Notice:  This communication is confidential and may contain 
privileged information.  If you have received it in error, please notify the 
sender by reply e-mail and immediately delete it and any attachments without 
copying or further transmitting the same.


All attachments are MS Office XP and are MIME encoded.  If you have any 
software compatibility issues, please contact EMA at (312) 827-8700 
immediately.



 [attachment
"EMADOCS-#36897-v1-EPA_Crankcase_Emissions_Letter_12-09.pdf" deleted by 
Melanie King/RTP/USEPA/US]









(See attached file: SAE 2009-01-1084A  .pdf)
