Document ID: EPA-HQ-OAR-2005-0172-0182
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2007-06-20T04:00Z

"Johansson, Robert" <Robert_C._Johansson@omb.eop.gov> 

06/11/2007 09:38 AM

	

To

Lydia Wegman/RTP/USEPA/US@EPA

cc

Subject

FW: Ozone Preamble --- DOT comments

Hi Lydia,

For the 3-4 call on secondary --- will we be using 919-541-4407?

The two main comments from DOT on the first 100 pages:

1.  On page 11, para. B Related Control Requirements:  The discussion of

control requirements seem to fit better in the discussion related to

implementation.   Is EPA going to expand on the discussions related

implementation?  Also, since most of the controls cited here are mobile

source related, we would like to review this section when it is done.

2.  Throughout the document, the current 8-hour standard was stated in

several different ways:  0.08 ppm, 0.080 ppm or 0.084 ppm.  We believe

the correct way to state the current 8-hour ozone standard is 0.08 ppm.

This is important as the standard was set to 2 decimal places in 1997

and this rulemaking specifically proposes to extend the standard to 3

decimal places.