## March 25, 2009

Jamie Pagan U.S. Environmental Protection Agency
USEPA Mailroom
Mail Code: D243-01 Research Triangle Park, NC 27711

Dear Mr. Pagan:

Thank you for providing an overview presentation of the recently proposed area source stationary engine rule (EPA-HQ-OAR-2008-0708) on March 25, 2009. The Institute of Clean Air Companies (ICAC), Manufacturers of Em issions Control Equipment (MECA), and emissions control and monitoring equipment companies were able to participate. Below is a list of the companies and/or names of those who participated in the conference call.

Best Regards,

Chad S. Whiteman, QEP Deputy Directory, ICAC 1730 M Street NW
Suite 206 Washington, DC 20036-5603 Telephone 202.457.0911
Fax 202.331.1388

David C. Foerter, Executive Director
Email: dfoerter@icac.com

Chad S. Whiteman, Deputy Director
Email: cwhiteman@icac.com

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# Conference Call Participants

ADA Environmental Solutions, LLC
Advanced Electron Beams Air Liquide America Specialty Gases Airflow Sciences Corporation Airgas, Inc. Albemarle, Performance Chemicals
ALSTOM Power
Ametek Process Instruments Andover Technology Partners Anguil Environmental Systems, Inc. Antonio Santos, MECA Argillon LLC Avogadro Environmental Corporation
Babcock & Wilcox
Babcock Power Inc. Baldwin Environmental, Inc.
BASF Belco Technologies Corporation
Black & Veatch
Burns & McDonnell Cabot Superior MicroPowders Calgon Carbon Corporation California Analytical Instruments
Carmeuse North America Carolyn Slaughter, ICAC Casey Industrial, Inc. CEM Service Group, Inc. Cemtek Instruments, Inc. Chad Whiteman, ICAC Chemco Systems LP Chemical Lime Company Clyde Bergemann EEC CMC Solutions and Support Cormetech, Inc. Corning, Incorporated CRI Catalyst Company David Foerter, ICAC Dekoron/Unitherm, Inc. Dürr Environmental & Energy Systems
ECOM America Ltd. Enerfab, Inc. Envirolutions Systems Environmental Systems Corporation Epcon Industrial Systems Evergreen Energy
FLSmidth Minerals Inc. Forney Corporation
Fuel Tech GE Energy Services Graymont Inc. Haldor Topsoe, Inc. Hamon Research-Cottrell, Inc. Hitachi Power Systems America, Ltd. Horiba Instruments, Inc.
ICL-IP International Paint Protective Coatings Group Johnson Matthey Stationary Source Emissions Control
Krishnan & Associates Lodge-Cottrell, Inc. M&C Products Analysis Technology, Inc. Marsulex Environmental Technologies Matheson Trigas, Inc. McIlvaine Company
MetalTek International Midwesco Filter Resources, Inc. Millennium Chemicals, A Lyondell Company Mississippi Lime Company Mitsubishi Heavy Industries, Am erica, Inc., Environmental Systems Division Mitsubishi Power Systems, Inc.
MKS Instruments NalcoMobotec USA, Inc.
NORIT Americas Inc.
NWL Transformers
Ohio Lumex Parker Hannifin, Parflex Division Pavilion Technologies, Inc.
Perma Pure Philadelphia Mixing Solutions
Pollution Control Services Potash Corporation of Saskatchewan, Inc. Powerspan Corporation Praxair, Inc.
PSP Industries Rasto Brezny, MECA
Red Ball Technical Gas Services Restek Corporation Sargent & Lundy, LLC
SCR-Tech SICK Maihak, Inc. Siemens Environmental Systems and Services Solvay Chemicals, Inc. Spectra Gases, Inc. Spectrum Systems, Inc. Stone & Webster Engineering Corporation Structural Steel Services, Inc. Süd-Chemie, Inc. Tekran Instruments Corp. Teledyne Monitor Labs Terra Environmental Technologies Testo, Inc. TGO Group, LLC Thermo Electron Corporation Thermon Manufacturing Co.
TLT Babcock Inc. Universal Analyzers, Inc. VIM Technologies, Inc. Washington Group International, Inc. WorleyParsons Zachry Construction Corporation