RE: For OMB - Additional revision to Table 5-20 (LML table) 12/16/2011 12:35 PM

From: "Higgins, Cortney" <Cortney_Higgins@omb.eop.gov>

To: RobertJ Wayland/RTP/USEPA/US@EPA

Cc: Bill Maxwell/RTP/USEPA/US@EPA

Hi Bob, I think the table is clearer than the one in the most recent draft. However, we suggest the footnote should be changed.

Suggestion (CAPS ARE THE ADDITONAL TEXT):

These estimates are rounded to two significant digits. It is important to emphasize that ALTHOUGH WE HAVE LOWER LEVELS OF CONFIDENCE IN LEVELS BELOW THE LML FOR EACH STUDY, the scientific evidence does not support the existence of a level below which health effects from exposure to PM2.5 do not occur. See Appendix 5E for more information.

-----Original Message----- From: Wayland.Robertj@epamail.epa.gov [mailto:Wayland.Robertj@epamail.epa.gov] Sent: Friday, December 16, 2011 12:25 PM To: Higgins, Cortney Cc: Maxwell.Bill@epamail.epa.gov Subject: Fw: For OMB - Additional revision to Table 5-20 (LML table)

----- Forwarded by RobertJ Wayland/RTP/USEPA/US on 12/16/2011 12:25 PM

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-- ------------------------------------------------------------------| |Amanda CurryBrown/RTP/USEPA/US |

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--------------------------------------------------------------------| |RobertJ Wayland/RTP/USEPA/US@EPA |

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-- ------------------------------------------------------------------| |Bryan Hubbell/RTP/USEPA/US@EPA, Lydia Wegman/RTP/USEPA/US@EPA, Jim DeMocker/DC/USEPA/US@EPA, Susan Anenberg/RTP/USEPA/US@EPA, Amy | |Lamson/RTP/USEPA/US@EPA, Ron Evans/RTP/USEPA/US@EPA |

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-- ------------------------------------------------------------------| |12/16/2011 12:18

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-- ------------------------------------------------------------------| |For OMB - Additional revision to Table 5-20 (LML table) |

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-- ------------------------------------------------------------------|Hi Bob,

We've made a revision to table 5-20 in Chapter 5, reflected in the attached document. The table has been reworked because we found the previous version potentially confusing. Could you forward this to Cortney? This is the only change to Ch. 5.

(See attached file: New Table 5-20.docx)

Amanda Curry Brown OAQPS/HEID/AEG 919.541.3808 CurryBrown.Amanda@epa.gov