From: "Susan Miller"

Sent: 05/19/2011 03:23 PM

To: Jeff Telander/RTP/USEPA/US@EPA

Cc: "Irene Kuo" 

Subject: Modeling data

JeffAttached is the updated list of modeling data. We have only been able to fill in a few more facilities, 

including the missing Boral plants. For all others, we recommend using the attached default values. 

These are based on the average values of all available data for the stack height, stack diameter 

(assuming circular, tho we do have some square stacks), stack exit temperature, and acfm air flow. 

Velocity can be calculated from these parameters. 

We believe these average values, used in combination with each other, represent a reasonably 

conservative approach to establishing default values. We have provided figures that show the 

maximum, minimum, average, and median for each parameter in four different kiln (size) 

groupings.

We will be looking at modeling all plants using HEM3, as you are. Once we are both done, it will be 

interesting to discuss our conclusions. Obviously, a huge factor in this modeling will be the 

emission rates used in the model when site-specific information is not available (as is the case for 

many/most facilities for Cl2). We are working on our assumptions and seeing whether there is any 

correlation between Cl2 emissions and other emissions (presumably HCl).

We appreciate your willingness to consider this approach for our industry. We continue to believe 

that our facilities do not emit dangerous amounts of HAP and should not be forced out of business 

with unreasonable controls that have limited to no environmental benefit. 

Susan J. Miller

Vice President, Environment, Health & Safety

The Brick Industry Association

311 S. Academy St., Suite 5

Cary, NC 27511

smiller@bia.org

(919) 380-2191(o) 

(703) 624-3652 (c)

Make it a great day!

<<Controlled BSCP Modeling Input Analysis forDefaults.pdf>>

<<Uncontrolled BSCP Modeling Input Analysis forDefaults.pdf>>

<<Model Input Defaults Tables.pdf>>

<<BSCP Modeling Table for EPA v2 51911.xlsx>>
Controlled Kilns

0

20

40

60

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120

0

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120

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Stack Height Default Analysis

Average

Overall Max

Overal Min

Overall Average

Median

0

1

2

3

4

5

6

7

0

1

2

3

4

5

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7

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Stack Diameter Default Analysis

Average

Overall Max

Overall Min

Overall AVerage

Median

0

10

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60

70

0

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<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Stack Velocity Default Analysis

Average

Overall Max

Overall Min

Overall Average

Median

0

5000

10000

15000

20000

25000

30000

35000

40000

0

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10000

15000

20000

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35000

40000

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Stack DSCFM Default Analysis

Average

Overall Max

Overall Min

Overall Average

Median

C:\Documents and Settings\ikuo\My Documents\Modeling HBCA\Controlled BSCP Modeling Input Analysis forDefaults 5/19/2011

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

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0

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<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Stack Exit Temp Default Analysis

Average

Overall Max

Overall Min

Overall Average

Median

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

0

20000

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0

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<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Stack ACFM Default Analysis

Average

Overall Max

Overall Min

Overall Average

Median

C:\Documents and Settings\ikuo\My Documents\Modeling HBCA\Controlled BSCP Modeling Input Analysis forDefaults 5/19/2011
Uncontrolled Kilns

150

200

250

150

200

250

Stack Height Default Analysis

100

120

140

160

100

120

140

160

Stack Velocity Default Analysis

0

50

100

150

0

50

100

150

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Average

Overall Max

Overal Min

Overall Average

Median

0

20

40

60

80

100

120

0

20

40

60

80

100

120

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Average

Overall Max

Overall Min

Overall Average

Median

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

5

6

7

5

6

7

Stack Diameter Default Analysis

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

40000

50000

60000

40000

50000

60000

Stack DSCFM Default Analysis

0

1

2

3

4

5

6

0

1

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5

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<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Average

Overall Max

Overall Min

Overall AVerage

Median

0

10000

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40000

50000

0

10000

20000

30000

40000

50000

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Average

Overall Max

Overall Min

Overall Average

Median

0 0

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

500

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500

600

700

Stack Exit Temp Default Analysis

0 0

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

70000

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90000

100000

70000

80000

90000

100000

Stack ACFM Default Analysis

0

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0

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<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Average

Overall Max

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Overall Average

Median

0

10000

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30000

40000

50000

60000

70000

0

10000

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<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40

Average

Overall Max

Overall Min

Overall Average

Median

<5 5>=x<10 10>=x<15 15>=x<20 20>=x<40 <5 5>=x<10 10>=x<15 15>=x<20 20>=x<40
Default Model Input Parameters

Uncontrolled Kilns

Stack 

Height (ft)

Stack 

Diameter 

(ft)

Exit 

Temperat

ure 

(Degrees 

F)

Stack 

Velocity 

(ft/sec)

Stack 

Flowrate 

(DSCFM)

Stack 

Flowrate 

(ACFM)

Average 55.66691 3.286879 372.5868 49.32608 16466.83 25513.96

Max 200 5.74993 649.994 150 56906 92998.05

Min 29.8556 0.6096 139.73 9.04 2209 3533

std dev 31.22854 0.782664 113.4847 23.94185 10555.64 14945.69

avg+3*stde 149.3525 5.634871 713.0408 121.1516 48133.74 70351.03

count 66 68 66 66 27 65

Median 49 3.225 350.33 49.53488 13846 23185.83

Controlled Kilns

Stack 

Height (ft)

Stack 

Diameter 

(ft)

Exit 

Temperat

ure 

(Degrees 

F)

Stack 

Velocity 

(ft/sec)

Stack 

Flowrate 

(DSCFM)

Stack 

Flowrate 

(ACFM)

Average 78.23224 4.540739 365.4793 42.21943 21203.57 44407.59

Max 107.2835 6.583 568 66.10564 34904 106733

Min 45 0.9144 209 23.49 5263 10602

std dev 15.7405 1.097707 79.8694 12.16471 7992.973 22899.82

avg+3*stde 125.4537 7.83386 605.0875 78.71356 45182.49 113107

count 35 35 35 34 21 33

Median 80 4.5 356 40.24829 21261 36997.68