1 

### Medina, Dayana

From: Pettyjohn, Mary <PETTYJOHN@adeq.state.ar.us>

Sent: Tuesday, February 12, 2013 9:39 AM

To: Medina, Dayana

Cc: Donaldson, Guy; Feldman, Michael

Subject: FW: SWEPCO PM Question

Attachments: winmail.dat; AEP_BART_Costing_2013-01-16_for Ma ry.xlsx; AEP_BART_Followup for Mary_

2013-01-15.xlsx

Good morning,

Thank you for the comments.

Below are the assumptions Trinity used in determining the PM numbers.

Did I sent the attachments to you previously?

Mary

From: Jeremy Jewell [mailto:JJewell@trinityconsultants.com]

Sent: Thursday, February 07, 2013 2:41 PM

To: Pettyjohn, Mary

Cc: kpgaus@aep.com

Subject: RE: SWEPCO PM Question

Mary, sorry for the delay in getting this to you. Here is the explanation of the PM numbers.

We started with the baseline total PM emission rate of 192.5 lb/hr, which, according to the NPS, for "Dry Bottom Boiler

burning Pulverized Coal using only ESP for Emissions control", breaks down as follows:

15.5% of the total...or 29.8 lb/hr of coarse PM (PMC),

11.9% of the total...or 22.9 lb/hr of fine PM (PMF),

57.7% of the total...or 111.2 lb/hr of inorganic condensable PM (CPM IOR), assuming all is SO4,

14.4% of the total...or 27.8 lb/hr of organic condensable PM (CPM OR), and

0.5% of the total...or 0.9 lb/hr of elemental carbon (EC)

Then for the NIDS, we assumed that SO4 reduction is the same as SO2 reduction, i.e., 92%. So we get 111.2 lb/hr of SO4

* (1

‐ 92%)

= 8.9 lb/hr of SO4. For "Dry Bottom Boiler burning Pulverized Coal using only Fabric Filter for Emissions

control", NPS says that 70% of the total PM is SO4. So that gives 8.9 lb/hr of SO4 / 70% = 12.7 lb/hr of total PM. And

this breaks down as follows:

6.3% of the total...or 0.8 lb/hr of coarse PM (PMC),

6.0% of the total...or 0.8 lb/hr of fine PM (PMF),

70% of the total...or 8.9 lb/hr of inorganic condensable PM (CPM IOR), assuming all is SO4,

17.5% of the total...or 2.2 lb/hr of organic condensable PM (CPM OR), and

0.2% of the total...or 0 lb/hr of elemental carbon (EC)

And for the Wet Scrubber, we assumed only a 50% reduction in SO4 since wet scrubbers have less affinity for sulfuric

acid aerosols. So this gives 111.2 lb/hr of SO4 * (1

‐ 50%)

= 55.6 lb/hr of SO4. The back

‐ calculation of total PM is done

using the same NPS data for "Dry Bottom Boiler burning Pulverized Coal using only Fabric Filter for Emissions control".

Total PM = 55.6 lb/hr of SO4 / 70% = 79.4 lb/hr of total PM. And then the breakdown follows:

6.3% of the total...or 5.0 lb/hr of coarse PM (PMC),

6.0% of the total...or 4.8 lb/hr of fine PM (PMF),

70% of the total...or 55.6 lb/hr of inorganic condensable PM (CPM IOR), assuming all is SO4,

17.5% of the total...or 13.9 lb/hr of organic condensable PM (CPM OR), and

0.2% of the total...or 0.2 lb/hr of elemental carbon (EC)2 Does this help?

_________________________________________________________________ Jeremy W. Jewell, Principal and Manager of Consulting Services for Oklahoma NEW OKLAHOMA CITY ADDRESS AND

PHONE NUMBER

201 NW 63rd St., Suite 220 Oklahoma City, OK 73116 | 405

‐ 848

‐ 3724

1831 E. 71st Street Tulsa, OK 74136 | 918

‐ 877

‐ 2742

e

‐ mail: jjewell@trinityconsultants.com<mailt o:jjewell@trinityconsultants.com> | e

‐ fax: 918

‐ 512

‐ 7084

From:

"Pettyjohn, Mary" <PETTYJOHN@adeq.state.ar.us<mailto:PETTYJOHN@adeq.state.ar.us>>

To:

Jeremy Jewell <JJewell@trinityconsultants.com<ma ilto:JJewell@trinityconsultants.com>>

Cc:

"kpgaus@aep.com<mailto:kpgaus@aep.com>" <kpgaus@aep.com<mailto:kpgaus@aep.com>>

Date:

01/31/2013 03:29 PM

Subject:

RE: SWEPCO PM Question

________________________________

Hi Jeremy,

Thank you.

I will be out of the office tomorrow so no hurry.

Mary

From: Jeremy Jewell [mailto:JJewell@trinityconsultants.com]

Sent: Thursday, January 31, 2013 2:36 PM

To: Pettyjohn, Mary

Cc: kpgaus@aep.com<mailto:kpgaus@aep.com>

Subject: Fw: SWEPCO PM Question

Mary,

I just wanted to let you know that it may be a day or two before I can respond. The consultant who helped me put

together all the calculations, modeling, etc. for this report, Molly Goldstein, in on maternity leave. She is checking email

every couple of days, and I've emailed her question that I would like to get confirmation on so that I am sure to give you

the exact right calculations.3 Thanks,

_________________________________________________________________ Jeremy W. Jewell, Principal and Manager of Consulting Services for Oklahoma NEW OKLAHOMA CITY ADDRESS AND

PHONE NUMBER

201 NW 63rd St., Suite 220 Oklahoma City, OK 73116 | 405

‐ 848

‐ 3724

1831 E. 71st Street Tulsa, OK 74136 | 918

‐ 877

‐ 2742

e

‐ mail: jjewell@trinityconsultants.com<mailt o:jjewell@trinityconsultants.com> | e

‐ fax: 918

‐ 512

‐ 7084

From:

"Pettyjohn, Mary" <PETTYJOHN@adeq.state.ar.us<mailto:PETTYJOHN@adeq.state.ar.us>>

To:

Jeremy Jewell <JJewell@trinityconsultants.com<ma ilto:JJewell@trinityconsultants.com>>

Date:

01/30/2013 04:12 PM

Subject:

RE:

________________________________

Hi Jeremy,

Could you please send me how Trinity or SWEPCO calculated the total PM10 emissions for the NID and the WFG.

Thanks,

Mary

From: Jeremy Jewell [mailto:JJewell@trinityconsultants.com]

Sent: Wednesday, January 30, 2013 3:04 PM

To: Pettyjohn, Mary

Hi Mary,

I know you called my Tulsa office this morning to ask about SWEPCO

‐ something about PM. Can you email me your

question? I've been traveling all week; I'm currently in the Phoenix airport.

_________________________________________________________________ Jeremy W. Jewell, Principal and Manager of Consulting Services for Oklahoma NEW OKLAHOMA CITY ADDRESS AND

PHONE NUMBER

201 NW 63rd St., Suite 220 Oklahoma City, OK 73116 | 405

‐ 848

‐ 3724

1831 E. 71st Street Tulsa, OK 74136 | 918

‐ 877

‐ 27424 e

‐ mail: jjewell@trinityconsultants.com<mailt o:jjewell@trinityconsultants.com> | e

‐ fax: 918

‐ 512

‐ 7084

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_________________________________________________________________________

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