# Encina Power Plant - monthly emissions Units 4 and 5

Tom W. Andrews t

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: Shaheerah Kelly 09/15/2010 11:13 AM

Cc: "Tom W. Andrews", "Piantka, George"

From: "Tom W. Andrews" <TAndrews@sierraresearch.com>

To: Shaheerah Kelly/R9/USEPA/US@EPA

Cc: "Tom W. Andrews" <TAndrews@sierraresearch.com>, "Piantka, George" <George.Piantka@nrgenergy.com>



# Ms. Kelly:

As requested, enclosed are the monthly emissions for Encina Power Plant Units 4 and 5 during the period from 2002 to 2009. We apologize for the delay in submitting this information to you. It took longer than anticipated to summarize the information. Please let us know if you have any questions.Encina Power Plant ‐ Annual Emissions for Boiler Units 4 and 5
Annual Emissions (tons/year)

Unit 4 Unit 5

2002 1 2003 2 2004 3 2005 4 2006 5 2007 6 2008 7 2009 8,9 2002 1 2003 2 2004 3 2005 4 2006 5 2007 6 2008 7 2009 8,9

NOx 101.9 75.7 86.5 53.2 35.5 39.6 28.5 12.6 113.7 87.4 80.9 37.2 37.5 60.6 57.2 18.6

CO 804.5 416.6 570.9 384.1 108. 4 54.1 74.5 64.1 922.1 481.0 533.8 268.7 67.8 46.1 83.0 52.1

VOC 26.4 27.3 37.4 25.1 16.3 7.3 9.9 8.5 30.2 31.5 35.0 17.6 17.4 11.1 19.8 12.5

PM 10 58.2 53.5 70.5 47.7 31.1 12.0 16.4 14.1 66.0 46.7 54.0 28.4 28.2 21.7 38.6 24.2

SOx 5.4 3.0 4.1 2.7 4.4 3.1 1.1 0.9 5.6 3.4 3.8 1.9 3.8 4.2 2.2 1.4

Encina Power Plant ‐ Monthly Emissions for Boiler Units 4 and 5 Monthly Emissions (tons)

Unit 4 Unit 5

2002 2003 2004 2005 2006 2007 2008 2009 2002 2003 2004 2005 2006 2007 2008 2009 NOx January 0.3 7.3 6.8 7.9 4.4 2.6 0.5 1.5 9.7 7.5 1.0 5.9 4.2 5.4 8.2 3.0 February 0.0 6.6 8.4 7.9 3.7 0.3 13.7 0.5 11.5 6.6 0.6 2.2 4.5 1.2 1.6 2.4
March 5.3 5.6 10.0 8.6 2.6 0.3 0.0 0.0 12.6 4.5 8.2 0.9 5.4 0.0 32.4 0.6 April 11.3 5.8 8.4 8.1 4.4 1.0 1.2 2.1 6.7 3.5 8.8 4.9 0.0 0.0 1.7 0.0 May 11.1 0.6 8.0 7.9 1.8 5.8 0.4 1.3 7.1 5.3 6.8 5.9 0.8 4.7 1.2 0.2

June 10.0 6.8 7.3 2.0 2.4 0.4 2.0 0.2 9.6 7.0 7.4 1.0 2.9 5.8 1.5 0.4 July 11.3 7.4 7.4 0.3 5.1 4.3 1.4 1.6 10.9 8.8 7.3 2.2 5.8 6.7 1.0 1.4 August 11.5 9.3 6.6 0.3 3.4 9.5 2.6 1.8 11.4 11.5 6.5 3.7 2.4 7.3 1.5 0.8 September 10.5 8.6 9.7 0.2 2.8 4.9 3.2 2.3 10.1 11.3 7.8 1.5 1.6 2.4 2.2 2.4
October 10.6 9.5 2.8 3.9 1.1 7.0 1.1 1.1 9.8 11.9 9.2 1.3 2.4 8.0 2.2 2.8
November 12.3 7.4 0.8 1.0 2.4 1.0 0.6 0.2 7.4 4.9 9.1 3.5 4.2 6.8 1.7 2.3
December 7.7 0.7 10.4 5.1 1.4 2.5 1.9 0.1 7.0 4.4 8.2 4.2 3.3 12.3 1.9 2.3 CO January 2.7 40.1 44.6 56.9 13.4 3.5 1.3 7.5 78.5 41.3 6.4 42.6 7.6 4.1 11.9 8.4 February 0.0 36.1 55.5 57.4 11.3 0.4 35.8 2.3 92.9 36.3 4.2 16.1 8.2 0.9 2.3 6.6
March 41.5 31.1 65.9 61.9 8.0 0.5 0.0 0.0 102.2 24.9 54.0 6.4 9.8 0.0 47.1 1.6 April 89.3 32.1 55.4 58.3 13.5 1.4 3.0 10.6 54.6 19.5 57.8 35.5 0.0 0.0 2.5 0.0 May 87.7 3.5 52.6 57.4 5.6 8.0 0.9 6.4 57.6 29.4 45.0 42.6 1.5 3.5 1.8 0.6

June 78.6 37.4 47.9 14.6 7.5 0.5 5.3 1.1 77.5 38.3 48.6 6.9 5.2 4.4 2.2 1.2 July 89.5 40.8 48.6 2.0 15.6 5.8 3.6 8.0 88.2 48.5 48.5 15.6 10.5 5.1 1.4 3.9 August 91.1 51.3 43.6 2.3 10.3 13.0 6.9 9.3 92.5 63.4 42.7 26.8 4.3 5.5 2.2 2.3 September 82.9 47.5 64.1 1.1 8.5 6.6 8.3 11.8 81.7 62.3 51.6 10.9 2.8 1.8 3.1 6.6
October 83.5 52.2 18.6 28.4 3.4 9.6 2.9 5.4 79.8 65.7 60.8 9.6 4.4 6.1 3.2 7.7
November 97.0 40.9 5.2 7.2 7.2 1.3 1.5 1.2 60.0 27.0 60.2 25.5 7.6 5.2 2.5 6.6
December 60.7 3.6 68.9 36.6 4.2 3.4 5.0 0.5 56.7 24.3 54.1 30.2 5.9 9.4 2.7 6.5 VOC January 0.1 2.6 2.9 3.7 2.0 0.5 0.2 1.0 2.6 2.7 0.4 2.8 1.9 1.0 2.8 2.0 February 0.0 2.4 3.6 3.7 1.7 0.1 4.8 0.3 3.0 2.4 0.3 1.1 2.1 0.2 0.5 1.6
March 1.4 2.0 4.3 4.0 1.2 0.1 0.0 0.0 3.3 1.6 3.5 0.4 2.5 0.0 11.2 0.4 April 2.9 2.1 3.6 3.8 2.0 0.2 0.4 1.4 1.8 1.3 3.8 2.3 0.0 0.0 0.6 0.0 May 2.9 0.2 3.4 3.7 0.8 1.1 0.1 0.9 1.9 1.9 3.0 2.8 0.4 0.9 0.4 0.2

June 2.6 2.5 3.1 1.0 1.1 0.1 0.7 0.1 2.5 2.5 3.2 0.5 1.3 1.1 0.5 0.3 July 2.9 2.7 3.2 0.1 2.4 0.8 0.5 1.1 2.9 3.2 3.2 1.0 2.7 1.2 0.3 0.9 August 3.0 3.4 2.9 0.1 1.5 1.7 0.9 1.2 3.0 4.2 2.8 1.8 1.1 1.3 0.5 0.6 September 2.7 3.1 4.2 0.1 1.3 0.9 1.1 1.6 2.7 4.1 3.4 0.7 0.7 0.4 0.8 1.6
October 2.7 3.4 1.2 1.9 0.5 1.3 0.4 0.7 2.6 4.3 4.0 0.6 1.1 1.5 0.8 1.8
November 3.2 2.7 0.3 0.5 1.1 0.2 0.2 0.2 2.0 1.8 3.9 1.7 2.0 1.3 0.6 1.6
December 2.0 0.2 4.5 2.4 0.6 0.5 0.7 0.1 1.9 1.6 3.5 2.0 1.5 2.3 0.7 1.5

PM 10 January 0.2 5.2 5.5 7.1 3.9 0.8 0.3 1.7 5.6 4.0 0.6 4.5 3.2 1.9 5.5 3.9 February 0.0 4.6 6.9 7.1 3.2 0.1 7.9 0.5 6.6 3.5 0.4 1.7 3.4 0.4 1.1 3.1
March 3.0 4.0 8.1 7.7 2.3 0.1 0.0 0.0 7.3 2.4 5.5 0.7 4.1 0.0 21.9 0.7 April 6.5 4.1 6.8 7.2 3.9 0.3 0.7 2.3 3.9 1.9 5.8 3.8 0.0 0.0 1.2 0.0 May 6.3 0.4 6.5 7.1 1.6 1.8 0.2 1.4 4.1 2.9 4.6 4.5 0.6 1.7 0.8 0.3

June 5.7 4.8 5.9 1.8 2.1 0.1 1.2 0.2 5.5 3.7 4.9 0.7 2.2 2.1 1.0 0.6 July 6.5 5.2 6.0 0.2 4.5 1.3 0.8 1.8 6.3 4.7 4.9 1.6 4.3 2.4 0.7 1.8 August 6.6 6.6 5.4 0.3 2.9 2.9 1.5 2.0 6.6 6.2 4.3 2.8 1.8 2.6 1.0 1.1 September 6.0 6.1 7.9 0.1 2.4 1.5 1.8 2.6 5.9 6.1 5.2 1.2 1.2 0.8 1.5 3.1
October 6.0 6.7 2.3 3.5 1.0 2.1 0.6 1.2 5.7 6.4 6.1 1.0 1.8 2.9 1.5 3.6
November 7.0 5.3 0.6 0.9 2.1 0.3 0.3 0.3 4.3 2.6 6.1 2.7 3.2 2.5 1.2 3.1
December 4.4 0.5 8.5 4.5 1.2 0.8 1.1 0.1 4.1 2.4 5.5 3.2 2.5 4.4 1.3 3.0 SOx January 0.0 0.3 0.3 0.4 0.5 0.2 0.0 0.1 0.5 0.3 0.0 0.3 0.4 0.4 0.3 0.2 February 0.0 0.3 0.4 0.4 0.5 0.0 0.5 0.0 0.6 0.3 0.0 0.1 0.5 0.1 0.1 0.2
March 0.3 0.2 0.5 0.4 0.3 0.0 0.0 0.0 0.6 0.2 0.4 0.0 0.6 0.0 1.2 0.0 April 0.6 0.2 0.4 0.4 0.5 0.1 0.0 0.2 0.3 0.1 0.4 0.3 0.0 0.0 0.1 0.0 May 0.6 0.0 0.4 0.4 0.2 0.5 0.0 0.1 0.3 0.2 0.3 0.3 0.1 0.3 0.0 0.0

June 0.5 0.3 0.3 0.1 0.3 0.0 0.1 0.0 0.5 0.3 0.3 0.0 0.3 0.4 0.1 0.0 July 0.6 0.3 0.3 0.0 0.6 0.3 0.1 0.1 0.5 0.3 0.3 0.1 0.6 0.5 0.0 0.1 August 0.6 0.4 0.3 0.0 0.4 0.7 0.1 0.1 0.6 0.4 0.3 0.2 0.2 0.5 0.1 0.1 September 0.6 0.3 0.5 0.0 0.3 0.4 0.1 0.2 0.5 0.4 0.4 0.1 0.2 0.2 0.1 0.2
October 0.6 0.4 0.1 0.2 0.1 0.6 0.0 0.1 0.5 0.5 0.4 0.1 0.2 0.6 0.1 0.2
November 0.7 0.3 0.0 0.1 0.3 0.1 0.0 0.0 0.4 0.2 0.4 0.2 0.4 0.5 0.1 0.2
December 0.4 0.0 0.5 0.3 0.2 0.2 0.1 0.0 0.3 0.2 0.4 0.2 0.3 0.9 0.1 0.2

Notes:

1. 2002 Emission Inventory Report for the Encina Power Plant, prepared by San Diego Air Pollution Control District.

2. 2003 Emission Inventory Report for the Encina Power Plant, prepared by San Diego Air Pollution Control District.

3. 2004 Emission Inventory Report for the Encina Power Plant, prepared by San Diego Air Pollution Control District.

4. 2005 Emission Inventory Report for the Encina Power Plant, prepared by San Diego Air Pollution Control District.

5. 2006 Emission Inventory Report for the Encina Power Plant, prepared by San Diego Air Pollution Control District.

6. 2007 Revised Emission Inventory Report for the Encina Power Plant, prepared by San Diego Air Pollution Control District.

7. 2008 Revised Emission Inventory Report for the Encina Power Plant, prepared by San Diego Air Pollution Control District.

8. Annual NOx emissions for 2009 were obtained from the 2009 Encina Power Plant Annual SDAPCD Rule 69 report.
9. Annual emissions for 2009 for all pollutants except NOx were computed from natural gas usage and emission factors from the 2008 SDACPD Annual Emission Inventory report.