1

From: Peter Westlin/RTP/USEPA/US

To: "Yves Tondeur, Ph.D." <ytondeur@ultratrace.com>

Cc: Barrett Parker/RTP/USEPA/US@EPA, Gary McAlister/RTP/USEPA/US@EPA, hsteele@ultratrace.com, Jason Dewees/RTP/USEPA/US@EPA, Jeff

Ryan/RTP/USEPA/US@EPA, Rachel Agnew/RTP/USEPA/US@EPA, Robin Segall/RTP/USEPA/US@EPA, Rochelle Boyd/RTP/USEPA/US@EPA, Ron

Myers/RTP/USEPA/US@EPA, Tom Driscoll/RTP/USEPA/US@EPA, William Grimley/RTP/USEPA/US@EPA

Date: 07/26/2010 10:24 AM

Subject: RE: Sec. Al ICR Questions

Superior work is always acceptable. Y es, to the isotope dilution high

- res procedure.

Peter Westlin

Measurement Policy Group

OAQPS, SPPD

919

- 541

- 1058

From: "Yves Tondeur, Ph.D." <ytondeur@ultratrace.com>

To: Peter Westlin/RTP/USEPA/US@EPA

Cc: <hsteele@ultratrace.com>, Robin Segall/RTP/USEPA/US@EPA, Gary McAlister/RTP/USEPA/US@EPA, Barrett Parker/RTP/USEPA/US@EPA, Ron

Myers/RTP/USEPA/US@EPA, Jason Dewees/RTP/USEPA/US@EPA, William Grimley/RTP/USEPA/US@EPA, Rachel Agnew/RTP/USEPA/US@EPA,

Tom Driscoll/RTP/USEPA/US@EPA, Jeff Ryan/RTP/USEPA/US@EPA, Rochelle Boyd/RTP/USEPA/US@EPA

Date: 07/26/2010 10:05 AM

Subject: RE: Sec. Al ICR Questions

Thank you, Peter.

It is also understood that we can use a superior methodology to 8270; i.e., isotope

dilution high

- resolution gas chromatography and high

- resolution mass spectrometry (e.g.,

CARB

- 429 HRMS version) because it offers better detection limits as well as higher data

quality. I am referring to the figure below, which was discussed at PCB last March.2 Yves

Yves Tondeur, Ph.D.

President & CEO

Analytical Perspectives

2714 Exchange Drive

Wilmington, NC 28405

Ph.: 910

- 794

- 1613 ext. 103

----- Original Message

----- From: Westlin.Peter@epam ail.epa.gov [ mailto:Westlin.Peter@epamail.epa.gov ]

Sent: Monday, July 26, 2010 9:54 AM

To: Yves Tondeur, Ph.D.

Cc: hsteele@ultratrace.com; Segall.Robin@epamail.epa.gov; Mcalister.Gary@epamail.epa.gov;

P arker.Barrett@epa.gov; Myers.Ron@epamail.epa.gov; Dewees.Jason@epamail.epa.gov;

Grimley.William@epamail.epa.gov; agnew.rachel@epa.gov; driscoll.tom@epa.gov;

Ryan.Jeff@epamail.epa.gov; Boyd.Rochelle@epamail.epa.gov

Subject: Re: Sec. Al ICR Questions

Yve s:

1 and 2) We asked the project lead to develop a list of compounds of

interest for the particular program so that we could define the method

(s) accordingly and reduce at least some of the confusing issues we had

with the utility MACT sampling and analysis requirements. The answer is

that list of PAHs. We will certainly accept data for other compounds in

addition to those listed if analyst wishes to provide those.

3) Yes, the laboratory may combine the three fractions extracted as per

Met hod 3542 and analyze them as one using Method 8270C or D as you have

outlined.

Peter Westlin

Measurement Policy Group

OAQPS, SPPD3 919

- 541

- 1058

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|"'Heather Steele'" < hsteele@ultratrace.com >

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|07/26/2010 09:28 AM

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|Sec. Al ICR Questions

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Dear Robin,

Thank you for returning my call last Friday. I actually missed your call

by a few picoseconds.

1. The list of PAHs (see attachment) contains 16 PAHs (most likely

derived from 8270 rather than CARB

- 429). In any case, our approach

covers those 16 PAHs plus three additional ones.

2. The attachment mentions 8270 C and D without mentioning the SVOST

compounds typically covered by 8270. Thus, I assume PAHs are the

only target analytes from 8270 (or equivalent CARB

- 429) that the4

ICR is after.

3. The attachment does mention 3542, which means that the three

fractions (FH, BH an d Impinger) are prepared and analyzed

separately leading to three analytical runs. This is the same

issue we discussed at length at PCB last March and ended resolving

by allowing the three fractions to be analyzed as a single sample

so long the lab was able to monitor the extraction efficiencies of

the impinger fraction (extracted as a water; i.e., different than

the solid phase that is done by Soxhlet Dean

- Stark for the FH/BH)

independently from the solid ph ase extraction. Thus, I assume that

the same thinking would apply for this ICR. But I would prefer to

check with you before contacting the client who requested a quote

from us.

To summarize (limited to SVOST):

a) On e train per run is collected for the PAHs.

b) The list of 19 PAHs (CARB

- 429) is acceptable since it

includes the 16 PAHs listed in the ICR. No other SVOST analytes

are required.

c) The three fractions (FH, BH, and Im pinger) can be

processed so that only one analytical run per train is performed

provided the lab monitors and documents the extraction

efficiencies for both aqueous and solid phase’s extractions.

Please let me know if this translation meets your expectations.

Cheers,

Yves

Yves Tondeur, Ph.D.

President & CEO

Analytical Perspectives

2714 Exchange Drive

Wilmington, NC 28405

Ph.: 910

- 794

- 1613 ext. 103