### Fw: Revised O3 NPR Lydia Wegman to: Karen Martin, Tricia Crabtree, John Hannon, Gautam Srinivasan 12/30/2009 05:46 PM History: This message has been forwarded. FYI. Tricia, this will need to go in the docket, but not until signature. John and Gautam, we can explain next week the basis for these changes. Gina McCarthy ----- Original Message ----- **From:** Gina McCarthy **Sent:** 12/30/2009 04:21 PM EST **To:** Wegman.Lydia@EPA.GOV **Subject:** Fw: Revised O3 NPR fyi Sorry. I forgot to cc you! ----- Forwarded by Gina McCarthy/DC/USEPA/US on 12/30/2009 04:20 PM -----

From: Gina McCarthy/DC/USEPA/US To: Dominic

_J.

_ Mancini@omb.eop.gov, Cass

_ R.

_ Sunstein@omb.eop.gov Date: 12/30/2009 03:57 PM Subject: Fw: Revised O3 NPR Here are the proposed changes. I think Lydia and Karen did an outstanding job addressing the issues raised. See what you think. Cass - thanks for taking the time to read through the package and provide such thoughtful and well-targeted comments. Have a wonderful blackberry-free (or at least limited) vacation. Dom - as always, I am available if and when you need me. My cell is 202-596-0247.
Thanks! ----- Forwarded by Gina McCarthy/DC/USEPA/US on 12/30/2009 03:53 PM -----

From: Lydia Wegman/RTP/USEPA/US To: Gina McCarthy/DC/USEPA/US@EPA Cc: "Karen Martin" <martin.karen@epa.gov> Date: 12/30/2009 02:15 PM Subject: Revised O3 NPR Karen and I have discussed all the edits she's made to address the comments we received yesterday. We think they address OMB's comments in a way with which we are comfortable and do not raise for comment the options we think are unacceptable. Rather, for both the primary and secondary standard, we are now asking for comments on the benefits associated with, in the case of the primary standard, going to a level in the proposed range relative to the March 2008 standard (aka .075ppb), and, in the case of the secondary standard, the benefits associated with a distinct cumulative, seasonal standard relative to an 8-hour standard. The pages where these and the other changes appear are identified in Karen's note below. Once you've had a chance to review the changes, please let me if you have any edits. Karen is out until late this afternoon so she won't be able to mak changes until later today (I don't have access to a computer so I can't make them). If the document is OK as is, either you can send it to Cass or I can send it to Dom. If you want to talk, please call my cell--919-621-3125.Karen Martin ----- Original Message ----- **From:** Karen Martin **Sent:** 12/30/2009 01:55 PM EST **To:** Lydia Wegman; rcantwell@mindspring.com **Subject:** revised O3 NPR Lydia -- As we discussed, edits to address OMB's issues are included on the following pages: Issues 1&2 on secondary standard benefits: new paragraph on pp. 348 and 349 (with very small  edits on pp. 319 and 335). Issue 3 on Dudley reference in CASAC comment: paragraph deleted on p. 313  Issue 4 on Adams study: footnote inserted (with language to be drawn from Adams' letter) on p.51  and sentences and footnote added on p.215 (I'm also including 2 pages from the 2008 notice that addresses comments on Adams' studies and EPA reanalysis) Issue 5 on margin of safety: language added on pp. 28-29  Issue 7 on incremental benefit of proposed primary standard: language added on pp. 235 and 236. 

Karen Martin, Ph.D. Office of Air Quality Planning and Standards U.S. EPA (C504-06) Research Triangle Park, NC 27711 phone: (919) 541-5274 fax: (919) 541-0237 martin.karen@epa.gov