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### Medina, Dayana

From: Medina, Dayana

Sent: Friday, August 22, 2014 4:46 PM

To: Reitter, Annabeth

Subject: RE: Webinar Slides and Request for a list of items

Hi Annabeth,

Thank you for the slides. We did find the webinar very informative and really appreciate you setting it up.

Below is a list of the items we requested yesterday during the webinar. Item #9 we actually did not bring up yesterday,

but I thought of after the webinar was over. We would really appreciate getting this information by Friday August 29 th

.

1. Please provide a summary of the scrubber system. This should include a brief history, original manufacturer,

design removal efficiency, etc.

2. How many absorbers are there for each scrubber system?

3. For each scrubber, describe its basic type (e.g., wet FGD, SDA), and the subtype (e.g., venturi

‐ rod, packed bed,

spray tower, etc.).

4. For each scrubber, describe the type of reagent used, how it is delivered to the absorber, and how it is

determined how much reagent to use.

5. For each scrubber, describe the internal equipment in each absorber (e.g., for a wet scrubber: how many spray

headers, trays, liquid distribution rings, mist eliminators, recycle pumps, etc.)

6. Have any upgrades been performed on the scrubber systems? If so, please describe, noting any improvements

to the SO2 removal efficiencies.

7. For each scrubber, describe how much of the flue gas is treated on a percentage basis (e.g., 100% for no bypass).

8. Please provide monthly average data for 2011, 2012, and 2013 for the following:

a. Monitored SO2

b. Mass of fuel burned for each fuel type

c. Percentage of sulfur for each fuel type. How was that calculated?

d. Time in hours in which the boiler which the scrubber serves was operating

e. Some indication of the load of the boiler which the scrubber serves. How was that calculated?

f. Any other performance data that would provide some indication of how the removal SO2 efficiency of

the scrubber varies in response to load and amount of reagent used.

9. Can you please discuss the temperature variability of the boilers and how that affects the technical feasibility of

SNCR for both boilers.

Thank you,

Dayana Medina

U.S. Environmental Protection Agency, Region 6

Multimedia Planning and Permitting Division

Air Planning Section (6PD

‐ L)

214

‐ 665

‐ 7241

From: Reitter, Annabeth [mailto:Annabeth.Reitter@domtar.com]

Sent: Friday, August 22, 2014 3:18 PM

To: Medina, Dayana

Subject: RE: Webinar Slides and Request for a list of items2 Hi Dayana,

Attached are the slides from yesterday’s webinar. Please forward the slides to your team since I do not have everyone’s

email address.

Thanks,

Annabeth

From: Reitter, Annabeth

Sent: Thursday, August 21, 2014 5:21 PM

To: medina.dayana@epa.gov

Subject: Webinar Slides and Request for a list of items

Hi Dayana,

I tried sending the slides from today’s webinar but I received a bounce back due to the file size being too

large. Tomorrow I will work with my IT staff tomorrow to see about compressing the file, etc.

We hope you found the webinar to be helpful and informative. Please let me know if there are any additional follow

‐ up

questions.

To avoid any confusion, would you please forward a list of the data items being requested of the three year period of

2011, 2012 and 2013. We want to ensure we are providing all of the information that is need on your end. We also

understand a list of the items requested for the SO2 scrubber internals will also be provided. If you could provide these

lists yet this week, that would be very helpful and gives us time to gather the information.

Thank you,

Annabeth

Annabeth Reitter

Corporate Manager, Environmental Regulation

T 715-886-7785 | C 715-459-9257

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