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

clarifying questions:

• We understand from Fred’s email that these are pre-certification FEMs. Are they eBAMS, or 1020s, or

something else?

• The charts show data collected from roughly Dec-February 2010 and 2011. Could you verify that

those are the three months that you are running? (or just share your monitoring periods for 2010,

2011, and 2012?)

• Finally, Clinton’s email says you’ve monitored in Novato and Woodacre, and Fred’s email says there’s

a BAAQMD monitor in San Rafael. The charts show San Rafael, Woodacre, and San Anselmo -?

Thanks much!-Gwen

Gwen M. Yoshimura75 Hawthorne Street, AIR-7San Francisco, CA 94105phone: 415.947.4134

fax: 415.947.3579

email: yoshimura.gwenepa.gov

Clinton MacDonald Hi Gwen, Fred Lurmann lead the measurement... 04/04/2012 03:50:34 PM

Clinton MacDonald <Clint(sonomatech.com>Gwen Yoshimura/R9IUSEPNUS@EPA

Fred Lurmann <fred@sonomatech.com>. “gcolwell@baaamd.gov” <gcolwell@baapmd.gov>. John

Ungvarsky/R9/USEPA/IJS@EPA

04/04/2012 03:50 PM

Sbe: RE: PM2.5 monitoring in Marin County 

Hi Gwen,

Fred Lurmann lead the measurements in Woodacre (for two years) and I lead the measurements inNovato (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. MacDonaldManager, Meteorological Measurements and AnalysisSonoma Technology, Inc.
Cc: Fred Lurmann; gcolwelftö)baagmd.gov; John Ungvarsky

Subject: Re: PM2.5 monitoring in Mann County

Hi Clinton,I suspect this is not your project, but I’m hoping you can help me figure out who at STI might have some

information. We’ve heard that STI has collecting PM2.5 data near a residence in Mann County over thepast two years. We’d like 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.qwenepa.gov

ror Gwen Y0shImuraIRQIUSEPAIUS

: fredsonomatech.com

Cc: gcoIweIIbaagmd.ciov, John UngvarskyIR9IUSEPNUSEPA

a:e: 0312212012 03:35 PM

Sec:: PM2.5 monitoring in Maim CountyHi 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?
Gwen M. Yoshimura

75 Hawthorne Street, AIR-7

San Francisco, CA 94105phone: 415.947.4134

fax: 415.947.3579

email: yoshimura.gwencepa.gov

Message from Fred Lurmann <fred@sonomatech.com on The, 27 Mar 2012 01:40:42 +0000

To: Gwen Yoshinmra <Yoshimura.Gwen(epamail.epa.gov>

“gcolwell@baagmd.gov” <gcolwell@baacimd.gov>. John Ungvarsky <Ungvarsky.Johnepamail.ep

• <Clint@sonomatech.com>

Subject . RE: PM2.5 momtonng in Mann County

Hello Gwen,

We have been monitoring in Mann for the last two wood smoke seasons as a matter of personal interest(as Mann residents). The attached memo describes the 2010/2011 PM2.5 8AM 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 LurmannManager 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 Iyoshimum.Gwenepamail.epa.gov)

Sent: Thursday, March 22, 2012 3:35 PM

To: Fred Lurmann

Cc: gcolwelkSbaagmd.gov; John Ungvarsky

Subject: 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
We appreciate any help you might be able 

p

Thanks much,Gwen

Gwen M. Yoshimura75 Hawthorne Street; AIR-7

San Francisco, CA 94105

phone: 415.947.4134

fax: 415.947.3579

email: voshimura.gwenCeoa.aov Goldsborough_Marin_PM25Monitoring_201 0-1 1_MemoFlgs.doc
c)

20

C) D

C

15

10

0

11/21110 12/01110 12/11/10 12121110 12/31110 01/10/11

Date

Figure 4. Comparison of Daily PM2.5 concentrations in San Anselmo and San Rafael

(Mann County) in winter 2010/2011

5

01/20/11 01/30/11 02109/11

1455 N. McDowell Blvd. Suite D • Petaluma. CA 94954-6503 • 707.6859800 • Fx 7076659800 • www,aonomatech.com
35 NAAQS

0) D

25 - o

C.) - 0

o j 10

5.

11121110 12101110 12111110 12121110 12131110 01110111 01120111 01130111 02109111 02119111 03101111

Date

Figure 5. Comparison of Daily PM2.5concentrations in Woodacre and San Rafael (Mann

County) in winter 2010/2011.