January 25,2011 

### PECHANGA INDIAN RESERVATION Tribal Chairman: Mark Macarro Ternecula Band of Luiseiio Mission Indians Council Members:

Post Office Box 1477 Temecula. CA 92593 Mark Calac Telephone (95 1)770-6000 Fax (95 1I 695- 1778 Corrine Garbani Andrew Masiel, Sr. Russell "Butch Murphy Kenneth Perez Benjamin "Ben"Vasquez

Tribal Treasurer Christina McMenarnin Tribal Secretary: Darlene Miranda Mr. Jared Blwnenfeld Regional Administrator U.S. Environmental Protection Agency, Region 

### IX 75 Hawthorne Street San Francisco, CA 94105

Re: 1 -Hour Nitrogen Dioxide (NOz)Designation Recommendation for the Pechanga Band of Luiseiio Indians

Dear Mr. Blumenfeld:

The Pechanga Band of Luiseiio Indians appreciates the opportunity to submit a recommendation for the designation of the National Ambient Air Quality Standard for NO2. In accordance with the appropriate provisions of sections 301(d) and 110(o)ofthe Clean Air Act, the Pechanga Band of Luisefio Indians recommends that the air quality management area within the Pechanga Reservation's exterior boundaries be designated as unclassifiable/attainmentfor the new 1 -hour NO2 standard. The unclassifiable/attainmentrequest is based on Pechanga's estimation that the 1

-Hour NO2levels from data gathered since 2008 are not out of compliance with the 1 -Hour NO2 standard; however, a full three years worth of data is necessary to make a final determination. The Pechanga Ambient Air Monitoring Station is located at the Pechanga Government Center on the Pechanga Indian Reservation, near Temecula, California. Data gathered for NO2since the 3rd Quarter of 2008 through the 3rd quarter of 2010 have been validated, entered into the U.S. Environmental Protection Agency Air Quality System (AQS), and are summarized below within each year. The data currently indicates that the Pechanga Reservation will be in attainment for the new l-Hour NO2standard as well as the Annual standard. The 4th Quarter 2010 data is in the process of validation, however, the summary of raw data has been provided for reference as preliminary results suggest that the station remains within compliance ofthe standards.

2008 NO2Summary: In 2008 the Pechanga Ambient Air Monitoring Station came online. The 3rd and 

### 4thQuarters are summarized below as these are the two Quarters that collected complete data after station installation:3'd Quarter 2008: NO2data recovery for the quarter was 91%. The NO2 average during the 3rd quarter was 4ppb.The highest 1-hour average for NO2during the quarter was 30ppb and it occurred on September 25,2008. 4thQuarter 2008: 1V02 data recovery for the quarter was 94%. The NO2average during the 4thquarter was 7ppb. The highest 1 -hour average for NO2during the quarter was 33ppb and it occurred on October 22,2008.

2009 NO2 Summary: In 2009 the annual average was 5.2ppb and the 1-hour average was 27ppb. Each Quarter is summarized below:

1" Quarter 2009: The NO2data recovery for the quarter was 9 1%. The NO2 average during the quarter was Sppb, and the highest 1 -hour average was 27ppb which occurred
on January 20,2009. 2"dQuarter 2009: The NO2data recovery for the quarter was 95%. The NO2average during the quarter was 4ppb, and the highest 1 -hour average was 2 1 ppb which occurred
on April 2 1,2009. 3rdQuarter 2009: The NO2data recovery for the quarter was 94%. The NO2average during the quarter was 3ppb, and the highest 1-hour average was 27ppb which occurred on September 23,2009. 4thQuarter 2009: The NO2data recovery for the quarter was 95%. The NO2average during the quarter was Sppb, and the highest 1 -hour average was 26ppb which occurred on December 28,2009.

20 10NO2Summary: In 2010 the annual average is estimated at 3.7ppb and the 1-hour average is estimated at 23.5ppb. Each quarter is summarized below:

1" Quarter 2010: The NO2data recovery for the quarter was 92%. The NO2 average during the 1 st quarter was 4ppb. The highest 1-hour average was 25ppb, and it occurred
on January 4,2010. 2nd Quarter 20 10: The NO2 data recovery for the quarter was 92%. The NO2 average during the 2nd quarter was 4ppb. The highest 

### I -hour average was 20ppb, and it occurred
on April 8, 20 10. 3rdQuarter 20 10: The NO2 data recovery for the quarter was 9 1 %. The NO2 average during the 3rd quarter was 3ppb. The highest 1-hour average was 24ppb, and it occurred on September 27,2010. 4" Quarter 2010: The NO2 data recovery is currently estimated at 90%. The NO2 estimated average during the 4thquarter is 4.6ppb. The highest 1 -hour average was 23ppb and it occurred on November 30,2010.

In conclusion, while the Pechanga Ambient Air Monitoring Station is still in the process to gather 3 full years worth of data, all current data indicate the 1-HourNO2 standard will be met. The Pechanga Band of Luisefio Indians respectfully recommends that the Pechanga Indian Reservation and the areas within its exterior boundaries be designated as

### unclassiJiable/attainmentfor the I-Hour NO2 National Ambient Air Quality Standard. Thank you for your immediate attention on this matter.



### If you have any questions regarding this recommendation or requests for additional information, please contact Ms. Syndi Smallwood, Pechanga Environmental Department Director, ssmallwood(~pecha~a-nsn..gov or at 95 1-770-61 50.

Mark Macarro, Chairman

Cc: Deborah Jordan, R9 Air Division Director Laura McKelvey, OAR