01/25/2012 11:56 FAX 7342144050 US EPA

UNiTED STATES ENVIRONMENTAL PROTECTION AGENCY NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY



### 2566 PLYMOUTH ROAD ANN ARBOR, MICHIGAN 48105-2498 

### JAN 252012

OFFiCE OF AIR AND RAOJATIQN



### Kevin Knobloch President Union of Concerned Scientists 2 Brattle Square Cambridge, MA 0223 8-9105

Thank you for your letter of January 11, 2012, to Administrator Jackson, urging the Environmental Protection Agency to establish a "Tier 3" program for emissions and gasoline standards. In your letter you also emphasized the importance of finalizing such standards in the immediate future, highlighting the health and environmental benefits of timely, protective Tier 3 standards. We are in the process of developing a proposal for a Tier 3 

### program that includes more stringent motor vehicle emission and fuel standards. The EPA shares your goals of reducing air pollution from the nation's vehicle fleet, and we appreciate your input. Again, 

### thank you for your letter. If you have further questions, please contact Kathryn Sargeant at 734-214-4441.

Chester J. France, Director Assessment and Standards Division

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UNITED STATES ENVIRONMENTAL. PROTECTION AGENCY NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2565 PLYMOUTH ROAD ANN ARBOR, MICHIGAN 48105-2498

JAN 25 2012

OFFIOC OF A AND RADiATiON



### Michael Brune Executive Director Sierra Club 408 C Street, NE Washington, DC 20005

Thank 

### you for your letter of January 11, 2012, to Administrator Jackson, urging the Environmental Protection Agency to establish a "Tier 3" program for emissions and gasoline standards. In your letter you also emphasized the importance of finalizing such standards in the immediate future, highlighting the health and environmental benefits of timely, protective Tier 3 standards. We are in the process of developing a proposal for a Tier 3 program that includes more stringent motor vehicle emission and fuel standards. The EPA shares your goals of reducing air pollution from the nation's vehicle fleet, and we appreciate your input. Again, thank you for your letter. if you have further questions, please contact Kathryn Sargeant at 734-214-4441.

Chester 3. France, Director Assessment and Standards Division

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### Chester 3. 

### France. Directo Assessment and Standards Division 01/25/2012 11:58 FAX 7342144050

UNITED STATES ENVIRONMENTAL. PROTECTION AGENCY NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2565 PLYMOUTH ROAD ANN ARBOR, MICHIGAN 481 05-2498

OFFICE OF AIR AND RADIATION



### Ann Menikoff Director Green Transportation Campaign 408 C Street N.E. Washington, DC 20005 Dear Ms. Mesnikoff: Thank you for your letter of January 11, 2012, to Administrator Jackson, urging the Environmental Protection Agency to establish a "Tier 3" program for emissions and gasoline standards. In your letter you also emphasized the importance of finalizing such standards in the immediate future, highlighting the health and environmental benefits of timely, protective Tier 3 standards. We are in the process of developing a proposal for a Tier 3 program that includes more stringent motor vehicle emission and fuel standards. The EPA shares your goals of reducing air pollution from the nation's vehicJe fleet, and we appreciate your input. Again, thank you for your letter. If you have further questions, please Contact Kathryn Sargeant at 734-214-4441.

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UNITED STATES ENVIRONMENTAL PROTECTION. AGENCY NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2565 PLYMOUTH ROAD ANN ARBOR, MICHIGAN 48105-2498

JA 

### 2 52012

OFFICE OF AIR AND RADIATION



### Frances Beinecke President Natural Resources Defense Council 1200 New York Avenue, NW Washington, DC 20005
Dear Ms. Beinecke: Thank you for your letter of January 11, 2012, to Administrator Jackson, urging 

### the Environmental Protection Agency to establish a "Tier 3" 

### program for emissions 

### and gasoline standards. In 

### your letter you also emphasized the importance of finalizing such standards in the immediate future, highlighting the health and environmental benefits of timely, protective Ticr 3 standards. We are in the process of developing a proposal for a Tier 3 program that includes more stringent motor vehicle emission and fuel standards. The EPA shares your goals of reducing air pollution from the nation's vehicle fleet, and we appreciate your input. Again, thank you for your letter. 

### If you have further questions, please contact Kathryn Sargeant at 734-214-4441.



### Chester J. France, Director Assessment and Standards Division

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UNJTED STATES ENWRONMENTAL PROTECTION AGENCY NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2565 PLYMOUTH ROAD ANN ARBOR, MICHIGAN 48105-2498

JAN 25 2012

OFICC OF AiR AND RADIATION



### Fred Krupp President Environmental Defense Fund 1875 Connecticut Avenue, N.W. Washington, DC 20009

Thank you for your letter of January 1], 2012, to Administrator Jackson, urging the Environmental Protection Agency to establish a "Tier 3" 

### program for emissions and gasoline standards. In your letter you also emphasized the importance of finalizing such standards in the immediate future, highlighting the health 

### and environmental benefits of timely, protective Tier 3 standards. We are in the process of developing a proposal for a Tier 3 

### program that includes more stringent motor vehicle emission and fuel standards- The EPA shares your goals of reducing air poll Lition from the nation's vehicle fleet, and we appreciate your input. Again, thank you for your letter. If you have further questions, please contact Kathryn Sargeant at 734-214-4441.

Chester J. France s Director Assessment and Standards Division

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