Harvey Richmond/RTP/USEPA/US 

03/11/2008 04:35 PM

	

To

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

cc

Lydia Wegman/RTP/USEPA/US@EPA, martin.karen@epa.gov,
hannon.john@epa.gov, Tricia Crabtree/RTP/USEPA/US@EPA, Joseph
Pinto/RTP/USEPA/US@EPA

Subject

Fw: Revised O3 NFR preamble and rule









With respect to the comments on the footnote 15 on p. 30 of the draft
preamble concerning PRB, attached is a revised footnote with our
proposed language for the preamble.

I checked with Dr. Pinto and the CD did not discuss year-to-year
variability in PRB.  While we expect the variability to be within the
noise of the estimated range, there is nothing specifically in the CD
that allows us to address this.  

I also checked the CASAC specific comments by Dr. Russell and he was
discussing the overall approach in his comments and doesn't mention the
2001 year at all.  Therefore, we don't propose to make any revisions to
p.132.  We had already included the phrase "using 2001 meteorology" on
pages 129 and 130, in addition to the inclusion of "2001" in footnote 15
on p. 30 in the edits sent yesterday.

Harvey

    Harvey M. Richmond

    Ambient Standards Group

    Health and Environmental Impacts Division

    U.S. EPA

    C504-06

    RTP, NC  27711

    (office) 919-541-5271

    (fax) 919-541-0237

    (email)  richmond.harvey@epa.gov

_

