Gwen,The recent comparisons are attached. Novato and San Rafael levels were very

similar throughout the season, whereas PM2.5 in Woodacre was different than

that in San Rafael at times, presumably due to large amount of biomass burning

in Woodacre.

Fred Lurmann

Manager of Exposure Assessment Studies and President Emeritus

Sonorna Technology, Inc. 1455 McDowell Blvd ID Petaluma CA 94954

(707—665—9900 office, 415 203 6900 cell)

From: Gwen Yoshimura [Yoshimura . Gwen@epamail.epa.gov]Sent: Friday, September 14, 2012 7:39 AM

To: Fred Lurmann

Cc: Alison E. Ray; Clinton MacDonald

Subject: RE: PM2.5 monitoring in Mann County

Thanks Fred! We have graphs from you comparing your Nov2OlO—Feb2Oll data toSan Rafael. Do you have something similar for this past year’s worth of

winter data?

Thanks much,

Gwen

Gwen M. Yoshimura

75 Hawthorne Street, AIR—7

San Francisco, CA 94105

phone: 415.947.4134

fax: 415.947.3579

email: yoshimura.gwen@epa.govFrom: Fred Lurmann <fred@sonomatech.com>

To: Gwen Yoshimura/R9/USEPA/US@EPA,Cc: Clinton MacDonald <Clint@sonomatech.com>, “Alison E. Ray”

<aray@sonomatech. corn>

Date: 09/13/2012 03:06 PMSubject: RE: PM2.5 monitoring in Mann County
2) The monitors were operated Nov. 2010 — Feb. 2011 in Woodacre and San

Anselmo, and Nov. 2011 — Feb. 2012 in Woodacre and Novato.

3) We compared our measurements to those measured by the BAAQMD in San

Rafael to assess spatial variability within Mann County.

Let me know if you need additional information.

Fred Lurmann

Manager of Exposure Assessment Studies

Sonoma Technology, Inc. 1455 N. McDowell Blvd. #D, Petaluma, CA 94954-6503

707—665—9900 (office) 415—203—6900 (cell)

From: Gwen Yoshimura [mailto: Yoshimura.Gwen@epainail.epa.gov]

Sent: Thursday, August 30, 2012 3:02 PM

To: Clinton MacDonald; Fred LurrnannSubject: RE: PM2.5 monitoring in Mann County

Hello,

Would you mind responding to the questions below in writing, so that we have

it on record? I believe we discussed these on the phone in April, but would

like something to put in the docket for any future actions.

Much thanks!

—Gwen

Gwen M. Yoshimura

75 Hawthorne Street, AIR-7San Francisco, CA 94105

phone: 415.947.4134

fax: 415.947.3579

email: yoshimura . qwen@epa. gov<rnailto : yoshimura.qwen@epa . gov>

From: Gwen Yoshimura/R9/USEPA/US

To: Clinton MacDonald <Clint@sonomatech. com<mailto : Clint@sonomatech. corn

>>, Fred Lurmann <fred@sonomatech. com<mailto: fred@sonomatech.com>>,

Cc: “gcolwell@baaqmd. gov<mailto: qcolwell@baaqmd.gov>”

<gcolwell@baaqrnd. gov<mailto: gcolwell@baaqmd.gov>>, John

Ungvarsky/R9 /USEPA/US@EPA

Date: 04/11/2012 10:29 AN

Subject: RE: PM2.5 monitoring in Mann County

Hi Fred and Clinton,

Thank you very much for the information. I think that’s pretty much what we

were looking for. Three quick clarifying questions:
Thanks much!

—Gwen

Gwen M. Yoshimura

75 Hawthorne Street, AIR—7

San Francisco, CA 94105

phone: 415.947.4134

fax: 415.947.3579

email: yoshimura . gwen@epa.gov<inailto:yoshimura. gwen@epa.gov>

From: Clinton MacDonald <Clint@sonomatech.com<

mailto : Clint@sonomatech. corn>>

To: Gwen Yoshimura/R9/USEPA/US@EPACc: Fred Lurmann <fred@sonomatech. com<rnailto: fred@sonornatech. corn>>,

“gcolwell@baaqmd. gov<mailto : gcolwell@baaqmd.gov>” <gcolwell@baaqmd. gov<

mailto: gcolwell@baaqmd.gov>>, John Ungvarsky/R9/USEPA/US@EPA

Date: 04/04/2012 03:50 PM

Subject: RE: PM2.5 monitoring in Mann County

Hi Gwen,

Fred Lurmann lead the measurements in Woodacre (for two years) and I lead the

measurements in Novato (for this year only). I saw that Fred sent you some

information last week (see attached email).

If you want more detailed information regarding the measurements than what

Fred sent you, we can arrange a call with our field technician. Please let me

know.

Best Regards,

Clinton P. MacDonald

Manager, Meteorological Measurements and Analysis

Sonoma Technology, Inc.

1455 N. McDowell Blvd., Suite D

Petaluma, CA 94954

707—665—9900707—665—9800 fax

www. sonomatech. com<http: //www. sonouiatech. com/>

From: Gwen Yoshimura [mailto : Yoshimura . Gwen@epamail . epa. govi
who at STI might have some information. We’ve heard that STI has collecting

PM2.5 data near a residence in Mann County over the past two years. We’dlike to hear more about this monitoring — instruments, how the monitoring is

being conducted in terms of QA, what the data look like.

If you could help us figure out if/who at STI we could talk to about this

project, we’d appreciate it!

,Thanks,

Gwen

Gwen M. Yoshimura

75 Hawthorne Street, AIR—7

San Francisco, CA 94105

phone: 415.947.4134

fax: 415.947.3579

email: yoshimura. gwen@epa . gov<inailto:yoshixnura.qwen@epa . gov>From: Gwen Yoshimura/R9/USEPA/USTo: fred@sonomatech. corn<rnailto: fred@sonomatech. corn>

Cc: gcolwell@baaqmd. gov<mailto : gcolwell@baaqmd.gov>, John

Ungvars ky/R9 /USEPA/US @EPA

Date: 03/22/2012 03:35 PMSubject: PM2.5 monitoring in Mann County

Hi Fred,

Eric Stevenson at BAAQMD said that you may be familiar with some PM2.5

monitoring that has been done near a residence in Mann County over the past

two years? We are trying to ather more information about the monitoring.Specifically, we are hoping that you or someone at STI might be able to help

us learn:

- what kind of instrument it is, and if it’s an FEM — what the data have been. Any exceedances?

— curious about QA

We appreciate any help you might be able to provide!

Thanks much,

Gwen
mailto:fred@soriornatech.corn>> on Tue, 27 Mar 2012 01:40:42 +0000

To:

Gwen Yoshimura <Yoshimura. Gwen@eparnail . epa. gov<

mailto : Yoshimura . Gwen@epamail . epa. gov>>

cc:

“gcolwell@baaqmd. gov<mailto : gcolwell@baaqmd.gov>”

<gcolwell@baaqmd. gov<inailto : gcolwell@baaqmd.gov>>, John Ungvarsky<tJngvarsky. John@epamail . epa. gov<mailto : Unqvarsky. John@epamail. epa. gov>>,Clinton MacDonald <Clint@sonomatech. corn<mailto : Clint@sonomatech. corn>>

Subject:

RE: PM2.5 monitoring in Mann County

Hello Gwen,

We have been monitoring in Mann for the last two wood smoke seasons as amatter of personal interest (as Mann residents). The attached memo describes

the 2010/2011 PM2.5 BAM data which shows more exceedances at a residence in

Woodacre than at the BAAQMD’s site in San Rafael. The 2011/2012 are not

finalized but also show exceedances in Woodacre. Normal QA was performed on

the BAMs. These instruments predate the FEM certifications.

Give me a call if you would like to talk about what we have done.

Fred Lurmann

Manager of Exposure Assessment Studies and President Emeritus

Sonoma Technology, Inc. 1455 McDowell Blvd #D Petaluma CA 94954

(707—665—9900 office, 415 203 6900 cell)

From: Gwen Yoshimura [Yoshimura.Gwen@epamail.epa.gov]Sent: Thursday, March 22, 2012 3:35 PM

To: Fred LurmannCc: gcolwell@baaqmd. gov<rnailto: gcolwell@baaqind.gov>; John UngvarskySubject: PM2.5 monitoring in Mann County

Hi Fred,Eric Stevenson at BAAQMD said that you may be familiar with some PM2.5

monitoring that has been done near a residence in Mann County over the past

two years? We are trying to gather more information about the monitoring.

Specifically, we are hoping that you or someone at STI might be able to help

us learn:

- what kind of instrument it is, and if it’s an FEM — what the data have been. Any exceedances? — curious about QA

We appreciate any help you might be able to provide!
Gwen M. Yoshimura

75 Hawthorne Street, AIR—7San Francisco, CA 94105

phone: 415.947.4134

fax: 415.947.3579

email: yoshimura . gwen@epa. gov<mailto : yoshimuxp.wer@epa,oy>
40

L2

30

820

• 10

0

1111/2011

24-hr Average PM2.5 Concentration

Woodacre and San Rafael

November 2011. - February 2012

—.--San Rafael - r —NMQS

*-

-.

-NAAQS

1111/2011 11/16/2011 12/1/2011 12/16/2011 12/31/2011 1/15/2012 1/30/2012 2/14/2012 2/29/2012

Date Fna data

11/16/2011 12/1/2011 12/16/2011 12/31/2011 1/15/2012 1/30/2012

Date Fin& data

-.—Woodacre 50

m

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