Pradeep Rajan, ScD

Ambient Standards Group

Health and Environmental Impacts Division

Office of Air Quality Planning and Standards

U.S. EPA

mail code: C504

- 06

RTP, NC 27711

office: 919

- 541

- 2580

fax: 919

- 541

- 0237

email: rajan.pradeep@epa.gov

----- Forwarded by Pradeep Rajan/RTP/USEPA/US on 01/31/2011 12:38 PM

-----

From: Pradeep Rajan/RTP/USEPA/US

To: Tricia Crabtree/RTP/USEPA/US@EPA

Date: 12/17/2010 02:51 PM

Subject: Fw: Re: Urgent Request for Information from your 2009 study

Pradeep Rajan, ScD

Ambient Standards Group

Health and Environmental Impacts Division

Office of Air Quality Planning and Standards

U.S. EPA

mail code: C504

- 06

RTP, NC 27711

office: 919

- 541

- 2580

fax: 919

- 541

- 0237

email: rajan.pradeep@epa.gov

----- Forwarded by Pradeep Rajan/RTP/USEPA/US on 12/17/2010 02:51PM

-----

To: <Rajan.Pradeep@epamail.epa.gov>

From: "Antonella Zanobetti" <azanobet@hsph.harvard.edu>

Date: 09/15/2010 01:13PM

Subject: Re: Urgent Request fo r Information from your 2009 study

Dear Pradeep,

I apologize for the delay, I attach an excel table with the

number of deaths for each city across the study period.

it also includes the number of days with PM2.5 and PM coarse.

Please let me know if this is what you needed

thank you

Antonella>>> 08/31/10 4:31 PM >>>

Dear. Zanobetti,

We are planning to release the Final Policy Assessment document

for the

current PM NAAQS review at the end of September. Therefore, to

include

an analysis of this data in the Policy Assessment we need this

data as

soon as possible.

My apologies for the late notice for this request, but please

try to

provide us with this information (i.e. county specific number of

study

participants for each county across the entire st udy period of

1999

- 2005) earlier in the month if at all possible.

Thanks!

Pradeep

Pradeep Rajan, ScD

Ambient Standards Group

Health and Environmental Impacts Division

Office of Air Quality Planning and Standards

U.S. EPA

mail code: C504

- 06

RTP, NC 27 711

office: 919

- 541

- 2580

fax: 919

- 541

- 0237

email: rajan.pradeep@epa.gov

From: "Antonella Zanobetti"

To: Pradeep Rajan/RTP/USEPA/US@EPADate: 08/31/2010 03:10 PM

Subject: Re: Urgent Request for Information from your 2009

study

Dear Pradeep Rajan,

thank you for contacting me.

I am very busy at the moment, but will be able to help you in

the second

hal f of September.

Please send me back another email as a reminder

thank you

Antonella

Antonella Zanobetti, PhD

Senior Research Scientist

Department of Environmental Health

Exposure, Epidemiology, and Risk Program

Harvard School of Public Health

Landmark Ce nter

- Rm. 415 K West

401 Park Drive

Boston, MA 02215

USA

phone +1 617 384 8751

fax +1 617 384 8745

email azanobet@hsph.harvard.edu

>>> 8/24/2010 10:02 AM >>>

Dear Dr. Zanobetti,In our continuing review of the US PM standards, we were asked

by our

CASAC to consider how the findings of epidemiological studies

might be

used in considering a range of levels for a NAAQS. As part of

this

effort they have encouraged us to consider information on the

concentrations that were most influential in genera ting the

health

effect estimates reported in individual studies.

Consequently, we are interested in examining the distribution of

PM2.5

concentrations in conjunction with the number of study

participants

included in your published study “ The effect of fi ne and coarse

particulate air pollution on mortality: A national analysis ”

.

Specifically, if available, we interested in receiving from you

the

county

- specific number of study participants for each of the

counties

included in your analysis across the ent ire study time period

(1999

- 2005).

We anticipate that this information would provide us with an

understanding of the distribution of PM2.5 concentrations linked

with

your study population and therefore an indication of which PM2.5

concentrations are like ly to be most influential in generating

the

reported health effect estimates.

Thanks in advance for your help!

Pradeep RajanPradeep Rajan, ScD

Ambient Standards Gmail code: C504

- 06

RTP, NC 27711

office: 919

- 541

- 2580

fax: 919

- 541

- 0237

email: raja n.pradeep@epa.gov