EPA-HQ-OAR-2008-0708-DRAFT-0303[1] ----- Forwarded by Melanie King/RTP/USEPA/US on 12/07/2009 02:11 PM

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

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 Page 1EPA-HQ-OAR-2008-0708-DRAFT-0303[1] 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. A nalysis methods include using extraction techniques and ICP/MS or E D 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 j suchecki@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.

A ll 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 Page 2EPA-HQ-OAR-2008-0708-DRAFT-0303[1] 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 A genc y Mail Code D243-01 RTP, NC 27711 Phone: (919) 541-2469 Fax: (919) 541-5450 king.melanie@epa.gov
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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 10:27 AM | Page 3EPA-HQ-OAR-2008-0708-DRAFT-0303[1] >----------------------------------------------------------------------------- -------------------------------------------------------------| |------------> | Subject: | |------------>

>----------------------------------------------------------------------------- -------------------------------------------------------------| |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 j suchecki@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.

A ll attachments are MS Office XP and are MIME encoded. If you have any software compatibility issues, please contact EMA at (312) 827-8700 immediately. Page 4EPA-HQ-OAR-2008-0708-DRAFT-0303[1]
-----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 A genc y 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. Page 6EPA-HQ-OAR-2008-0708-DRAFT-0303[1]

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 j suchecki@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.

A ll 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)

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