# I-I
January 6, 2010
Mr. Wayne Jones HaldorTopsoe, Inc. 17629 El Camino Real Suite 300 Houston, Texas 77058 MinnkotaPower Cooperative Milton R. Young StationUnits 1 

### & 2 Investigation ofHypothetical Application ofTESCR and LDSCR BMcD Project 31777 DearMr. Jones: Burns & McDonnell has prepared supplemental reports for the NOx BACT analyses for Milton R. Young Station (MRYS) Units 1 and 2, and these reports have been submitted by MinnkotaPower Cooperative to the North Dakota Department ofHealth. Inthe text ofthese reports, we statedthat: During preparation ofthe cost estimate, Burns 

### & McDonnell consulted withtwo SCR catalyst vendors experienced withbiomass-fired boiler SCRs and European coal-firedboilers with low-dust and tail end SCR systems. However, neither of these vendors was willing to guarantee a catalyst replacement schedule for cyclone boilers firing North Dakotalignite withoutresults following successful extensive pilot-scale slipstreamtesting that confirmthe deactivation and fouling rates. According to these catalyst suppliers, there is no SCR operating experience inthe world found to be directly comparable to the hypothetically applied tail end and low-dust SCR cases onNorth Dakota lignite-fired cyclone boilers being evaluated. Thus they were unable to offer a guaranteed catalyst replacement schedule based ontheir experience. Please review this statement andrespond in writing to confirmthat we have correctly stated your company's positiononcatalyst life guarantees for the application ofSCR systems to MRYS Units 1 

### & 2 without successful completion ofpilottesting. Sincerely,

# ~t~~ Project Engineer

9400 Warn Parkway Kansas City, Missouri 64114-3319 Tel: 816-333-9400 Fax: 816-333-3690 http.11\vww.bumsmcd.com

# I~I January 6,2010
Mr. Noel Rosha CERAM Environmental, Inc. 7304 W. BOth St. Suite 140 Overland Park, Kansas 66213 MinnkotaPower Cooperative Milton R. Young Station Units 1 

### & 2 Investigation ofHypothetical Application ofTESCR and LDSCR BMcD Project 31777 DearMr. Rosha: Burns 

### & McDonnell has prepared supplemental reports for the NOx BACT analyses for Milton R. Young Station (MRYS) Units 1 and 2, and these reports have been submitted by Minnkota Power Cooperative to the North Dakota Department ofHealth. In the text ofthese reports, we statedthat: During preparation ofthe 'cost estimate, Burns 

### & McDonnell consulted with two SCR catalyst vendors experiencedwith biomass-fired boiler SCRs and European coal-fired boilers with low-dust and tail end SCR systems. However, neither of these vendors was willing to guarantee a catalyst replacement schedule for cyclone boilers firing North Dakota lignite without results following successful extensive pilot-scale slipstreamtesting that confirm the deactivation and fouling rates. According to these catalyst suppliers, there is no SCR operating experience in the world found to be directly comparable to the hypothetically applied tail end and low-dust SCR cases on North Dakota lignite-fired cyclone boilers being evaluated. Thus they were unable to offer a guaranteed catalyst replacement schedule based on their experience. Please review this statement and respond in writing to confirm that we have correctly stated your company's position on catalyst life guarantees for the application ofSCR systems to MRYS Units 1 & 2 without successful completion ofpilot testing. Sincerely,

# ?f~~l~ ProjectEngineer

9400 Ward Parkway Kansas City, Missouri64114-3319 Tel: 816-333-9400 Fax: 816-333-3690 http://www.bumsmcd.com

## HALDOR TOPSCE 

# I]j

HaldorTopsoe, Inc. 17629 EI Camino Real Suite 300 Houston, Texas 77058 www.topsoe.com Tel: (281) 228-5000 Fax: (281) 228-5019 Mr. Robert O. Blakley, P.E. Burl")s & McDonnell 9400 Ward Parkway Kansas City, Missouri 64114 Minnkota Power Cooperative, Milton R. Young Units 1&2 Investigation of Hypothetical Application of TESCR and LOSCR BMcO project 31777 Mr. Blakley, January 13, 2010

This letter is to confirm that it is my understanding, based on the information currently at hand, that Haldor Topsoe, Inc would consider providing a SCR catalyst life guarantee for either Milton R. Young Unit 1 or Unit 2 for either a tail end (TESCR)or low dust (LOSCR) configuration only following the successful completion of a pilot-scale slipstream test of our SCR catalyst on one of the two MRY units. The issuance of a SCR catalyst life guarantee, if any, would be for only the configuration tested during the pilot-scale testing. If you have any question please feel free to contact me at 281-228-5136

Wayne S. Jones Sales Manager, Power Generation SCRlOeNOx Catalyst & Technology

RESEARCH I TECHNOLOGY I CATALYSTSBachman, Tom A. From:

, Sent:

To: Cc: Subject: Attachments:
Terry, John Graves [jgraves@minnkota.com] Thursday, January 14, 2010 11: 16 AM O'Clair, Terry L. Bachman, Tom A.; David B Sogard Catalyst Vendor**Guarante~s** CERAM Jan 06_2010 (signed).pdf

Below is an email from CERAM confirmingtheirposition on catalyst guarantees for LDSCRs and TESCRs at Milton R Young Station.
JohnT. Graves, P.E. Environmental Manager MinnkotaPowerCooperative, Inc. P.O. Box 13200 Grand Forks, N.D. 58208-3200 Tel: (701) 795-4221 Fax: (701) 795-4214

----- Forwardedby John Graves/Legal/Minnkotaon 01/14/2010 11: 11 AM

----- .

From: "Blakley, Robert" <rblakley@bumsmcd.com> To: John Graves <jgraves@minnkota.com> Cc: "Weilert, Carl" <cweiler@bumsmcd.com> Date: 01/13/2010 04:08 PM Subject: FW: Investigation ofHypothetical Application ofTESCR and LDSCR, MinnkotaPower Cooperative Milton R. Young Station Units 1 & 2

From: Noel Rosha [mailto:Noe1.Rosha@ceram-usa.com]

. Sent: Wednesday, January 13,20103:02 PM

To: Blakley, Robert Cc: Weilert, Carl Subject: RE: Investigation ofHypothetical Application ofTESCR and LDSCR, MinnkotaPower Cooperative Milton R. Young StationUnits 1 & 2
1Robert. CERAM confinns thatthe attached letter accuratelyreflects ourposition regarding catalystlife guarantees for the Milton R. Young Station tail end and low-dust SCR applications. Bestregards, Noel Rosha, P.E. SeniorApplications Engineer CERAM Environmental, Inc. Phone: 913-239-9896 Mobile: 913-638-9672

From: Blakley, Robert [mailto:rblakley@burnsmcd.com] Sent: Wednesday, January 06,20102:48 PM To: Noel Rosha
. Cc: Weilert, Carl Subject: RE: Investigation ofHypothetical Application ofTESCR and LDSCR, MinnkotaPower Cooperative Milton R. Young Station Units 1& 2 Noel: Confinning ourphone conversation ofJanuary 6,2010. We are asking for review ofour attached letter with written confinnationregarding stating CERAM-USA's catalyst life guaranteebeing contingentupon successful completion ofpilot-scaleslipstream testing that confinn catalyst deactivation and fouling rates ofthe studied hypothetical applications oftail end and low-dust SCRs for Units 1 and 2 atMilton R. Young Station for MinnkotaPowerCooperative. Robert D. Blakley, P.E. Associate Project Engineer (Currentlyregisteredand licensedinNorth Dakota) Burns & McDonnell Energy Group 9400 Ward Parkway Kansas City, MO 64114 Direct: 816-822-3842

.Main: 816-333-9400 Fax: 816-333-3690 rblakley@burnsmcd.com www.burnsmcd.com (See attached file: CERAM Jan 06_2010 (signed).pdf)

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