To: John Schakenbach/DC/USEPA/US@EPA

From: Peter Westlin/RTP/USEPA/US Date: 07/26/2010 01:01PM Cc: Gail Westlin <gail_westlin@yahoo.com>, gengland@environcorp.com, roy.owens@owenscorning.com, dbagwell@horizonengineering.com, pakalnis@lehder.com, kajiya
- mil lsk@michigan.gov, gail_westlin@yahoo.com Subject: Re: Number of Stack Test Companies John: I think that the degree to which your rule making spurs new candidates (and renewals, as Gail suggests) will determine the percentage of companies with the qualifi ed testers and not whether SES or ETA will be a bottleneck. ETA is the only company contracted to conduct the QSTI/QSTO exams for SES (i.e., register candidates, prepare the paperwork, and grade the exams). ETA hires proctors wherever needed so there is a good deal of flexibility and capacity if the demand is there. SES is responsible for the exam questions and for reviewing and acting on applications. SES can manage, review, and act on large number of applications; we have done that before. I think SES and ETA have the capacity to handle an increased number of requests, even a dramatic increase. Peter Westlin Measurement Policy Group OAQPS, SPPD 919 - 541 - 1058

From: "Schakenbach.John@epamail.epa.gov" <Schakenbach.John@epamail.epa.gov> To: Gail Westlin <gail_westlin@yahoo.com> Cc: Westlin.Peter@epamail.epa.gov Sent: Mon, July 26, 2010 10:03:04 AM Subject: Re: Number of Stack Test Companies Gail, Thanks. I noticed that many companies are listed several times because they have more than on e QSTI. When I remove the duplicate listings, I get about 110 companies. If there are about 400 stack test companies in the U.S., then about 28% of U.S. stack test companies have at least one QSTI at the present time. How high a percentage of companies with at least one QSTI can we get by about May 2011? John Schakenbach U.S. Environmental Protection Agency Clean Air Markets Division schakenbach.john@epa.gov Phone: 202
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----- Gail Westlin <gail_westlin@yahoo.com> wrote:
----- To: John Schakenbach/DC/USEPA/US@EPAFrom: Gail Westlin <gail_westlin@yahoo.com>

Date: 07/26/2010 09:42AM Subject: Re: Number of Stack Test Companies 

### Wejust posted an updated list on the SES website (I'm attaching that list), and there are 256 companies listed. This isn't the most complete list because, again, people have to contact us to get on the list. I know of at least one or two new companies that are not on this list as yet. In talki ng with Mike Hartman, he thinks there is about 400 companies with about 4000 total people in the US. If you wish, I can go through my database and give you a number for companies that have at least one QSTI, even for those not listed on the website. I won't give you company names, just the number. Gail
From: "Schakenbach.John@epamail.epa.gov" <Schakenbach.John@epamail.epa.gov> To: gail_westlin@yahoo.com Cc: Westlin.Peter@epamail.epa.gov Sent: Mon, July 26, 2010 8:57:20 AM Subject: Number of Stack Test Companies Gail, I'm preparing a response to comments document for the AETB/PGVP proposed rule. Could you please tell me the approximate number of stack test companies in the U.S.? I'm trying to calculate the approximate percentage of AETBs with at least one QSTI. Itlooks like there are 110 companies listed on the SES web site that have at least one QSTI (I know that this is probably an underestimate because not everyone wanted their name posted). Thanks John Schakenbach U.S. Environmental Protection Agency Clean Air Markets Division schakenbach.john@epa.gov Phone: 202
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