To: John Schakenbach/DC/USEPA/US@EPA

From: Theresa Nguyen/DC/USEPA/US

Date: 08/30/2010 11:11AM

Subject: Re: Revised Substitute Data Percents

John,

I thought I sent this to you last week, but when checked my Sent box, it
wasn't there.  Sorry.  Here it is.

PARAMETER CD	TOTAL OPERATING TIME WITH SUBSTITUTE DATA	TOTAL OPERATING
TIME	TOTAL SUBSTITUTE OPERATING TIME / TOTAL OPERATING TIME

CO2C	37,727	7,725,372	0.5%

FLOW	71,547	6,584,739	1.1%

NOXC	35,208	12,231,074	0.3%

NOXR	116,005	11,903,499	1.0%

SO2C	74,487	6,028,639	1.2%



John Schakenbach---08/30/2010 11:06:28 AM---Thuy,

Thuy,

 

Any luck with the revised data substitution percents?  Last week we
discussed that the substitute data operating time by parameter should be
divided by the total operating time for all units having that parameter,
instead of the total operating time for all units.

John Schakenbach

U.S. Environmental Protection Agency

Clean Air Markets Division 

  HYPERLINK "mailto:schakenbach.john@epa.gov" \t "blank" 
schakenbach.john@epa.gov  

Phone: 202-343-9158

Fax: 202-343-2359

