To : Cc: Bcc: Subject: Re: Symons - Response to PM Data Request

From: J Morel Symons <J-Morel.Symons@usa.dupont.com> To: Rebecca Yang/RTP/USEPA/US@EPA Cc: Beth Hassett-Sipple/RTP/USEPA/US@EPA, Lindsay Stanek/RTP/USEPA/US@EPA,

ageyh@jhsph .edu Date: 11/10/2009 10:44 AM Subject: Re: Request for PM Air Quality Data

Dear Ms. Yang:

Thank you for contacting me regarding this issue.

I am providing a spreadsheet that lists the 24-houraverage PM2.5 concentrations for the duration of my published cas e-crossover study (Symons JM, L Wang, et al. American Journal of Epidemiology, 2006;164 (5):421-433).

Please contact me with any further questions that you have.

(See attached file: Symons_AJE2006_24hrPMaverages.xls)

Best regards, Morel

J. Morel Symons, PhD, MPH Supervisor, DuPont Epidemiology Program Integrated Health Services E.I. du Pont de Nemours and Company 1090 Elkton Road, Building S320/Room 113 Newark, DE 19711 302.366.5305 (office), 302.256.7525 (cell) J-Morel.Symons@usa.dupont.com

Yang.Rebecca@epam ail.epa.gov

To 10/27/2009 02:49 J Morel Symons/AE/DuPont@DuPont

PM cc Stanek.Linds ay@epamail.epa.gov, Hassett-Sipp le.Beth@epamail.epa.gov Subject Request for PM Air Quality Data

Dear Dr. Symons,

My name is Rebecca Yang and I am writing to you on behalf of Dr. Lindsay Stanek and Ms. Beth Hassett-Sipple of the EPA. On May 2, 2009, an email was sent or forwarded to you requesting descriptive statistics on the air quality distribution data for PM2.5 and/or PM10-2.5for your study listed below. A copy of the May 2nd email request is included at the end of this email for your reference.

As follow up to the May 2nd email, and with your schedule permitting, Iwould like to speak with you on Friday

, October 30 th in order to obtain the

descriptive statistics for your study listed below. The statistics of most interest for the 24-hour concentrations of PM2.5 and/or PM10-2.5 are the following: - 95th percentile - 96th percentile - 97th percentile - 98th percentile - 99th percentile - maximum concentration value

If your study contains thoracic coarse PM data, then the PM10 data for the same statistics as above are also requested.

In respect for your time, if there is another researcher/co-author who may be able to handle this air quality data request (i .e., has easier access to the data), I would greatly appreciate his/her name and contact information. Please also note that your responses, in addition to any data you provide, will be placed in the EPA's public docket.

Thank you so much for your understanding and suppor t! I apologize for the inconvenience but the data you provide is critical for inclusion in the EPA's Integrated Science Assessment and Policy Asse ssment Document for Particulate Matter. Unless I hear from you otherwi se, I look forward to speaking with you on Friday, October 30th! Thank you for your time!

Sincerely,

Rebecca Yang Student Services Contractor U.S. Environmental Protection Agency National Center for Environmental Assessment-RTP PH: (919) 541-2655

Symons, J. M., L. Wang, et al. (2006). "A Case-Cros sover Study of Fine Particulate Matter Air Pollution and Onset of Conge stive Heart Failure Symptom Exacerbation Leading to Hospitalization." Am J Epidemiol.24hr_PM2.5_Symons(2006)

Date 24 hour Average

PM2.5 (ug/m3) Descriptive Statistics for PM2.5 24- hour concentrations 04/01/02 9.6096 04/02/02 14.6920 Mean 16.47446025 04/03/02 12.6521 Standard Error 0.666608927 04/04/02 7.1686 Median 13.8604 04/05/02 8.4921 Mode 10.6607 04/06/02 7.5770 Standard Deviation 10.41276431 04/07/02 9.8854 Sample Variance 108.4256605 04/08/02 14.9073 Kurtosis 5.40558522 04/09/02 11.9426 Skewness 2.045304677 04/10/02 12.1838 Range 66.0088 04/11/02 10.6607 Minimum 3.2887 04/12/02 16.6317 Maximum 69.2975 04/13/02 11.1093 Count of days 244 04/14/02 9.7633 04/15/02 11.0713 04/16/02 24.7103 04/17/02 27.7799 04/18/02 19.6564 04/19/02 21.7162 04/20/02 11.8076 04/21/02 7.3308 04/22/02 9.1740 04/23/02 7.0125 04/24/02 11.6327 04/25/02 9.8054 04/26/02 9.7265 04/27/02 12.8432 04/28/02 10.7873 04/29/02 8.1241 04/30/02 9.9005 05/01/02 8.9266 05/02/02 17.2888 05/03/02 8.4569 05/04/02 6.7645 05/05/02 9.7246 05/06/02 15.1839 05/07/02 12.2474 05/08/02 10.4466 05/09/02 23.3498 05/10/02 12.7300 05/11/02 10.3828 05/12/02 14.7199 05/13/02 16.4172 05/14/02 8.8930 05/15/02 9.8110 05/16/02 16.1850 05/17/02 17.1636 05/18/02 4.1404 05/19/02 5.4254

1 of 5 24hr_PM2.5_Symons(2006)24hr_PM2.5_Symons(2006)

Date 24 hour Average

PM2.5 (ug/m3) 05/20/02 8.0518 05/21/02 7.9889 05/22/02 10.4139 05/23/02 13.9211 05/24/02 20.4500 05/25/02 14.2500 05/26/02 22.7100 05/27/02 17.5500 05/28/02 15.9000 05/29/02 20.4600 05/30/02 14.3000 05/31/02 13.2450 06/01/02 15.5667 06/02/02 15.4063 06/03/02 10.4417 06/04/02 11.6153 06/05/02 26.0958 06/06/02 13.3889 06/07/02 5.6826 06/08/02 11.6542 06/09/02 12.9264 06/10/02 33.5095 06/11/02 38.5528 06/12/02 29.4625 06/13/02 16.8917 06/14/02 8.0431 06/15/02 11.3486 06/16/02 13.5625 06/17/02 13.3479 06/18/02 18.2569 06/19/02 21.3375 06/20/02 21.5264 06/21/02 14.9875 06/22/02 16.3563 06/23/02 16.9764 06/24/02 36.1181 06/25/02 56.8875 06/26/02 26.9146 06/27/02 16.1771 06/28/02 14.6183 06/29/02 14.1014 06/30/02 23.0347 07/01/02 24.6438 07/02/02 59.6208 07/03/02 50.4486 07/04/02 30.4092 07/05/02 16.7478 07/06/02 25.4804 07/07/02 69.2975

2 of 5 24hr_PM2.5_Symons(2006)24hr_PM2.5_Symons(2006)

Date 24 hour Average

PM2.5 (ug/m3) 07/08/02 48.4098 07/09/02 41.5135 07/10/02 22.4111 07/11/02 4.3873 07/12/02 11.5887 07/13/02 10.0694 07/14/02 8.5633 07/15/02 18.8492 07/16/02 23.3855 07/17/02 19.0565 07/18/02 50.0468 07/19/02 45.2900 07/20/02 31.9044 07/21/02 28.6170 07/22/02 30.2758 07/23/02 17.9580 07/24/02 12.9600 07/25/02 6.8538 07/26/02 6.6449 07/27/02 18.7343 07/28/02 20.4937 07/29/02 22.4842 07/30/02 17.5384 07/31/02 15.7992 08/01/02 23.9657 08/02/02 26.8566 08/03/02 24.0322 08/04/02 26.0762 08/05/02 45.0977 08/06/02 11.7335 08/07/02 8.7145 08/08/02 10.6064 08/09/02 11.4247 08/10/02 14.1228 08/11/02 19.5273 08/12/02 34.8065 08/13/02 54.2916 08/14/02 36.6314 08/15/02 15.7669 08/16/02 12.9424 08/17/02 11.0668 08/18/02 18.8895 08/19/02 26.2128 08/20/02 18.8259 08/21/02 16.6527 08/22/02 18.4561 08/23/02 20.8162 08/24/02 18.5005 08/25/02 13.8809

3 of 5 24hr_PM2.5_Symons(2006)24hr_PM2.5_Symons(2006)

Date 24 hour Average

PM2.5 (ug/m3) 08/26/02 21.2751 08/27/02 23.0167 08/28/02 11.7342 08/29/02 5.9138 08/30/02 13.7617 08/31/02 8.0237 09/01/02 3.2887 09/02/02 9.3391 09/03/02 22.0573 09/04/02 20.0290 09/05/02 9.1224 09/06/02 9.8860 09/07/02 12.7951 09/08/02 11.1300 09/09/02 18.7133 09/10/02 16.2758 09/11/02 13.8399 09/12/02 7.7827 09/13/02 18.5314 09/14/02 19.8666 09/15/02 13.1655 09/16/02 15.5967 09/17/02 26.6907 09/18/02 21.3603 09/19/02 22.3985 09/20/02 14.0653 09/21/02 10.7310 09/22/02 6.4291 09/23/02 11.0616 09/24/02 11.4777 09/25/02 13.9766 09/26/02 7.3786 09/27/02 7.4045 09/28/02 11.6074 09/29/02 14.9301 09/30/02 15.7253 10/01/02 20.3610 10/02/02 30.9715 10/03/02 33.7202 10/04/02 39.0767 10/05/02 16.8282 10/06/02 6.0603 10/07/02 11.1726 10/08/02 6.7859 10/09/02 10.1635 10/10/02 8.2122 10/11/02 6.1793 10/12/02 4.7750 10/13/02 6.4822

4 of 5 24hr_PM2.5_Symons(2006)24hr_PM2.5_Symons(2006)

Date 24 hour Average

PM2.5 (ug/m3) 10/14/02 6.1227 10/15/02 7.4757 10/16/02 3.4364 10/17/02 10.7512 10/18/02 9.7428 10/19/02 15.9026 10/20/02 9.4016 10/21/02 11.1396 10/22/02 15.8436 10/23/02 16.9693 10/24/02 8.4472 10/25/02 10.6085 10/26/02 6.7301 10/27/02 15.7131 10/28/02 15.1100 10/29/02 7.4639 10/30/02 5.0018 10/31/02 10.0489 11/01/02 12.7057 11/02/02 8.8651 11/03/02 13.3918 11/04/02 13.2386 11/05/02 16.4036 11/06/02 7.1276 11/07/02 8.0095 11/08/02 16.8413 11/09/02 22.8362 11/10/02 17.1927 11/11/02 11.6587 11/12/02 10.6607 11/13/02 11.5928 11/14/02 14.2500 11/15/02 19.2709 11/16/02 13.8046 11/17/02 3.6381 11/18/02 6.1454 11/19/02 17.6284 11/20/02 26.0451 11/21/02 32.7832 11/22/02 12.8086 11/23/02 5.7361 11/24/02 16.6944 11/25/02 33.9265 11/26/02 11.3822 11/27/02 7.9167 11/28/02 5.5276 11/29/02 12.7398 11/30/02 8.8452

5 of 5 24hr_PM2.5_Symons(2006)