From: "Kaysen, Eric" <Eric.Kaysen@fhr.com>

To: Brenda Shine/RTP/USEPA/US@EPA

Date: 09/08/2009 04:29 PM

Subject: FHR Corpus Christi Flaring Information

Brenda, I have attached a lot of information around our flares with some discussion. Take a look at this 

and tell me if this is what you were looking for. I have also attached a calculation spreadsheet for a 

flaring event at the east refinery (070309 flaring -loss of calpine.xls). It still has links to our operating 

system so make sure you open it with out the automatic calculation option on in excel and don't update it. 

We take periodic samples of the gas in the flare header that is being recovered and then have also 

sampled it during worst case events (blowdowns, etc). We try and take a sample during an actual flare 

event but if we can't then we default to our worst case numbers based on the plant operating 

configuration at the time.

Call if you have any questions or we can set up a site phone call or visit if that would help clarify.

Eric R. Kaysen

VP - EH&S

WP: 316-828-8842

MP: 316-304-8351

Eric.Kaysen@FHR.com

The East Plant flare flow is calculated in the following manner:

The flow to the 36” Main Flare at the East Plant is calculated by an equation that was developed through 

flow measurements in the field and regression fitting of the collected data. The equation for the flow for 

the 36” Main Flare is a function of the pressure differential between the square root of the flare header 

pressure and the square root of the water seal level. The basic correlation equation is a linear equation 

as follows:

y = mx + b

Where:

y = Total flow through 36” Flare (mscf) for each minute

m = is the slope of the regression line which was developed by measuring flow during varying pressure 

differential between the flare header and the water seal level, in this case 896.1 (mscfd).

x = ((pressure in the header)^0.5 – (water seal level)^0.5), both the pressure in the header and the water 

seal level are in inches of water and are measured continuously by instrumentation in the field which is 

used in the calculation via the PI System. 

b = is the intercept which would then be the minimum flow for a flaring incident; this volume was 

conservatively calculated at 15% of the 36” Flare average base load, which for the East Plant 36” Flare is 

65.1 (mscfd). 

The average base load flow to the 36” flare was determined to be 434,016 SCFD by summing the flow 

from the individual units to the 36” flare. 

Since the units of the m and b are in mscfd the value calculated is divided by 1440 to give the flow for that 

discreet minute. 
Therefore, the equation for the East Plant with all the values inserted would be the following:

Flow through the 36” Flare/Minute = (896.1 mscfd * ((pressure in the header)^0.5 – (water seal level)^0.5) 

+ 65.1 mscfd)/1440

Each discreet minute where the flare water seal is exceed for an individual flare is then summed for the 

span of the entire event to give the total volume sent to that individual flare (to get the total volume sent to 

flaring the volume sent to the individual flares would be summed). Total pounds of individual components 

released from a flaring event are calculated using the volume of gas sent to flare, speciation based on the 

sampled composition of the gas sent to flare and a combustion factor. For events where a sample is not 

obtained a worst case speciation is assumed. 

Eric,

Is there any way we could obtain a sample calculation for emissions from a flare water seal break-- we 

really want to understand how your folks estimate flow from the monitoring information you have on the 

flare-- eg., pressure differential. Or, is the calculation done by retracing the water seal break to the event 

and using process knowledge of the event, eg., knowing the conditions that caused the water seal break--

eg., an overpressure in a vessel, etc.?

Brenda
Spreadsheet Note:

The spreadsheet is setup to pick up flaring of all flares and during FGRU trip or an exceedance of FGRU pumping capacity (going to flarFor FGRU :E10FI9239.PV read the flow of flare gas recovered and routed to the fuel system.For Flares:E10PC9471.PV reads the pressure of flare header (in H2O)E10LI9220.PV shows the designated water seal level in 1st stage flare K.O. Drum (in H2O).Flow estimation is set at two conditions:If FGRU is in service, the flow rate is estimated with the setup equations for all flares.The average flare base load used in constructing this sheet was 434016 SCFD36" Flow Equation:36" flare flow/minute = 65.1MSCFD+896.91MSCFD(flare pressure^0.5-seal level^0.5)/1440 minutesIf FGRU is down, any off gas discharge to flare header would be flaring at once the water seal is exceeded in the 36" Flare and the last flow rate from E10FI9239.PV would be used as the flaring flow rate until FGRU back in service.The flow rate to the 24" flare is determined by using flow indicator E29FC5134.PV. Any flow on this flow indicator is an idication of flare gas bypassing the fuel system to the 24" flare.The slope (896.91 MSCFD) for the 36" flare is based on the average base load and the average delta P between the flare pressure and the seal level in " H2O for the flaring event starting 1/21/08 and ending 1/22/08The intercept (65.1 MSCFD) for the 36" flare flow calculation is 15% of base load and is used to ensure calculation is conservative from a release stand point

 7/10/09 Page 1of 1 070309 flaring 
East Plant - Flexible Limits

Current date and time: 7/10/2009 10:22

One week ago: 7/3/2009 10:22

Allowable 

CAP (lb/hr)

Last Wk's 

Avg (lb/hr) % of CAP Current (lb/hr) % 

EPNOXCAP.#1 E. Plant hrly NOx Cap Calc 427.79 74.83 17.49 71.88 

EPCO-CAP.#1 E. Plant hrly CO Cap Calc 297.78 25.32 8.50 23.37 

EPSO2CAP.#1 E. Plant hrly SO2 Cap Calc 275.42 9.92 3.60 7.10 

EPPM-CAP.#1 E. Plant hrly PM Cap Calc 50.00 27.98 55.96 28.13 

EPVOCCAP.#1 E. Plant hrly VOC Cap Calc 639.6 19.94 3.12 20.09 

 7/10/2009 070309 flaring -loss o

NOTES: (1) Any Emissions from Flaring must be added to the actual CAP (lb/hr) values to calculate Total Emissions.

(2) The VOC allowable Cap includes only combustion sources (does not include tanks, fugitives, cooling towers, 
Calculation of Flare Emissions: West Plant

Date and time when flaring began: 7/3/2009 0:00 Date of Report 7/10/2009 0:00Date and time when flaring ended: 7/3/2009 6:15 Report Author S. Peters

FIN: E01FL100

EPN: FL-97RN No.: RN100235266

Incident: Air Account No: NE-0122-D

Time set up earlier: 0 min

36" Flare Destruction Effiency: 98 % Time interval: 1 min

24" Flare Destruction Efficiency: 98 % Time prolong: 0 min

Plant Site: East

* Use 701FCD sample on the "36 Inch Flare" sheet.* Use 714FSF sample on the "24 Inch Flare" sheet. If not available use 721 MFD.* If in the sample results ppmv is used as a unit of measure the unit will need to be converted to mol% for the purposes of the calculation* For all species of butanes, butenes, hexanes, pentanes and octanes aggregate the total for each family for a RQ determination.* If a smoking flare is noticed adjust the destruction efficiency on the flare calcs to account for incomplete combustion (normally 98%, if smoking adjust to 93%).* TCEQ Technical Supplement 4 for flare (TCEQ publication RG-360A) recommends 93% destruction efficiency for smoking flares.

Average flow to flare: - MSCFH

24 Inch Flare Duration of flaring: - min

Total amount flared: - SCF

Average flow to flare: 672 MSCFD

36 Inch Flare Duration of flaring: 26 min

Total amount flared: 12,134 SCF

Summary of Flare Emissions 

24 Inch Flare 36 Inch Flare Total

CH4 (Methane): 0.0 0.9 0.9 lb 

CH2 (Ethane): 0.0 0.3 0.3 lb 

C2H4 (Ethylene): 0.0 0.2 0.2 lb 

C3H8 (Propane): 0.0 0.6 0.6 lb 

C3H6 (Propylene): 0.0 0.4 0.4 lb 

I-C4 (iso-Butane): 0.0 0.4 0.4 lb See butanes 

nC4 (n-Butane): 0.0 1.5 1.5 lb See butanes 

C4=1 (1-Butene): 0.0 0.0 0.0 lb See butenes 

IC4= (iso-Butene): 0.0 0.1 0.1 lb See butenes 

TC4= (trans-2-Butene): 0.0 0.0 0.0 lb See butenes 

CC4= (cis-2-Butene): 0.0 0.0 0.0 lb See butenes 

C4== (1,3-Butadiene): 0.0 0.0 0.0 lb 

IC5 (iso-Pentane): 0.0 4.4 4.4 lb See pentane

NC5 (n-Pentane): 0.0 0.5 0.5 lb See pentane

C6+ (Hexane plus) 0.0 0.8 0.8 lb 

Butanes (any isomer): 0.0 1.9 1.9 lb 

This spread sheet is setup to pick up flaring time for 24 and 36 Inch flares. Please make the necessary agency notifications in time.

Enter Date & time, time frame parameters, then press F9 to Calculate.

Flare Release Summary

 7/10/2009 Page 1of 2 07030
Butenes (any isomer): 0.0 0.2 0.2 lb 

Pentanes (any isomer): 0.0 0.9 0.9 lb 

Benzene: 0.0 0.0 0.0 lb** 

SO2 : 0.0 46.9 46.9 lb 

Total NOx : 0.0 0.9 0.9 lb 

CO : 0.0 4.4 4.4 lb H2S: 0.0 0.5 0.5 lb 

Destruction efficiencies and flare factors are from the "July 1996 TNRCC Technical Guidance Package for Flare Sources"Assume C6+ compounds are 3.3 % benzene.

****For all species of butanes, butenes, hexanes, pentanes and octanes aggregate the total for each family for a RQ determination.

 7/10/2009 Page 2of 2 07030
Flaring Flow Rate Calculation

Date and time when flaring began: 7/3/2009 0:00 Time set up earlier: min E10FI9239.PV

Date and time when flaring ended: 7/3/2009 6:15 Time interval: 1 min 1st flare flow equation constant

Time prolong: min 65.1 Intercept

36" Flare efficiency: 98 % 896.91 Slope

24" Flare efficiency: 98 %

Average flow to flare: 672 MSCFD 9/18/2013 13:36

36 Inch Flare Duration of flaring: 26 min

Total amount flared: 12,134 SCF

Duration of flaring: - MSCFD

24 Inch Flare Duration of flaring: - min

Total amount flared: - SCF

36 Inch Flare 24 Inch Flare 7/3/2009 5:06

E10PC9471.PV E10LI9220.PV Flaring (min) E29FC5134.PV E29FC5134.OP Flaring (min)

Flare Gas Header Water Seal Drum V110 26 12.134 Flare Flare 36 Inch 24 Inch

Date / Time inH2O inH2O counter MSCF SCFM % counter SCFM Indicator Indicator

7/3/2009 0:00 15.03 52.33 65.35

7/3/2009 0:01 15.05 52.31 63.55

7/3/2009 0:02 15.07 52.31 57.81

7/3/2009 0:03 15.05 52.31 60.11

7/3/2009 0:04 15.05 52.31 63.55

7/3/2009 0:05 15.04 52.31 63.55

7/3/2009 0:06 15.06 52.31 61.70

7/3/2009 0:07 15.06 52.31 61.70

7/3/2009 0:08 15.05 52.31 59.79

7/3/2009 0:09 15.03 52.31 59.79

7/3/2009 0:10 15.05 52.31 59.79

7/3/2009 0:11 15.00 52.31 59.79

7/3/2009 0:12 14.99 52.31 65.35

7/3/2009 0:13 14.99 52.31 61.70

7/3/2009 0:14 15.01 52.31 61.70

7/3/2009 0:15 15.07 52.31 59.79

7/3/2009 0:16 15.04 52.31 61.70

7/3/2009 0:17 15.01 52.31 67.10

7/3/2009 0:18 15.01 52.31 67.10

7/3/2009 0:19 15.04 52.31 63.55

7/3/2009 0:20 15.02 52.31 63.55

7/3/2009 0:21 15.00 52.31 65.35

7/3/2009 0:22 15.01 52.31 63.55

7/3/2009 0:23 15.02 52.31 63.55

7/3/2009 0:24 15.01 52.31 65.35

7/3/2009 0:25 15.00 52.31 63.55

7/3/2009 0:26 15.01 52.31 65.35

7/3/2009 0:27 15.03 52.31 61.70

7/3/2009 0:28 15.03 52.31 61.70

7/3/2009 0:29 15.03 52.31 67.10

7/3/2009 0:30 15.04 52.31 61.70

7/3/2009 0:31 14.98 52.30 59.79

7/3/2009 0:32 15.03 52.31 59.79

7/3/2009 0:33 15.00 52.31 59.79

7/3/2009 0:34 15.00 52.31 65.35

7/3/2009 0:35 15.00 52.31 65.35

7/3/2009 0:36 15.05 52.31 63.16

7/3/2009 0:37 15.04 52.31 59.79

7/3/2009 0:38 15.01 52.31 63.55

7/3/2009 0:39 14.99 52.31 67.10

7/3/2009 0:40 15.01 52.31 59.79

7/3/2009 0:41 15.00 52.31 59.79

7/3/2009 0:42 15.00 52.31 59.79

7/3/2009 0:43 15.02 52.31 57.81

7/3/2009 0:44 15.04 52.31 61.70

7/3/2009 0:45 15.03 52.31 59.79

7/3/2009 0:46 15.00 52.31 65.35

7/3/2009 0:47 15.01 52.31 61.70

7/3/2009 0:48 15.02 52.31 63.55

7/3/2009 0:49 15.00 52.31 61.70

7/3/2009 0:50 15.07 52.31 65.35

7/3/2009 0:51 15.06 52.31 65.35

7/3/2009 0:52 15.06 52.31 61.70

7/3/2009 0:53 15.05 52.31 61.70

7/3/2009 0:54 15.05 52.31 63.55

7/3/2009 0:55 15.05 52.31 61.70

7/3/2009 0:56 15.02 52.31 61.70

7/3/2009 0:57 15.04 52.31 62.04

7/3/2009 0:58 15.03 52.31 65.35

7/3/2009 0:59 15.00 52.31 61.70

7/3/2009 1:00 14.99 52.31 61.70

7/3/2009 1:01 14.99 52.31 59.79

7/3/2009 1:02 15.03 52.31 61.70

7/3/2009 1:03 15.00 52.31 63.55

7/3/2009 1:04 15.00 52.31 59.79

7/3/2009 1:05 15.00 52.31 65.35

7/3/2009 1:06 15.00 52.31 63.55

7/3/2009 1:07 15.00 52.31 63.55

7/3/2009 1:08 15.01 52.31 59.79

7/3/2009 1:09 15.02 52.31 63.55

7/3/2009 1:10 15.01 52.31 63.55

7/3/2009 1:11 15.02 52.31 61.70

7/3/2009 1:12 15.02 52.31 61.70

7/3/2009 1:13 15.01 52.31 61.70

7/3/2009 1:14 15.02 52.31 63.55

7/3/2009 1:15 15.02 52.31 65.35

7/3/2009 1:16 15.02 52.31 59.79

7/3/2009 1:17 15.09 52.31 57.81

7/3/2009 1:18 15.09 52.31 63.55

7/3/2009 1:19 15.08 52.31 59.79

Flare Release Summary

 7/10/2009 Page 1of 5 070309 flaring -loss of Calpine.xls Flare Flow
Flaring Flow Rate Calculation

Date and time when flaring began: 7/3/2009 0:00 Time set up earlier: min E10FI9239.PV

Date and time when flaring ended: 7/3/2009 6:15 Time interval: 1 min 1st flare flow equation constant

Time prolong: min 65.1 Intercept

36" Flare efficiency: 98 % 896.91 Slope

24" Flare efficiency: 98 %

Average flow to flare: 672 MSCFD 9/18/2013 13:36

36 Inch Flare Duration of flaring: 26 min

Total amount flared: 12,134 SCF

Duration of flaring: - MSCFD

24 Inch Flare Duration of flaring: - min

Total amount flared: - SCF

36 Inch Flare 24 Inch Flare 7/3/2009 5:06

Flare Release Summary

7/3/2009 1:20 15.07 52.31 63.55

7/3/2009 1:21 15.01 52.31 57.81

7/3/2009 1:22 14.99 52.31 58.18

7/3/2009 1:23 15.02 52.31 59.79

7/3/2009 1:24 15.01 52.31 61.70

7/3/2009 1:25 15.03 52.31 59.79

7/3/2009 1:26 15.03 52.31 57.81

7/3/2009 1:27 15.05 52.31 59.79

7/3/2009 1:28 15.04 52.31 57.81

7/3/2009 1:29 15.04 52.31 59.32

7/3/2009 1:30 15.02 52.31 61.70

7/3/2009 1:31 15.04 52.31 57.81

7/3/2009 1:32 15.04 52.31 65.35

7/3/2009 1:33 15.02 52.31 61.70

7/3/2009 1:34 15.02 52.31 59.79

7/3/2009 1:35 15.05 52.31 63.55

7/3/2009 1:36 15.03 52.31 65.35

7/3/2009 1:37 15.06 52.31 63.55

7/3/2009 1:38 15.03 52.31 57.81

7/3/2009 1:39 15.01 52.31 57.81

7/3/2009 1:40 15.01 52.31 59.79

7/3/2009 1:41 15.04 52.31 63.55

7/3/2009 1:42 15.03 52.31 58.88

7/3/2009 1:43 15.02 52.31 57.81

7/3/2009 1:44 15.06 52.31 59.79

7/3/2009 1:45 15.05 52.31 59.79

7/3/2009 1:46 15.02 52.31 57.81

7/3/2009 1:47 15.02 52.31 57.81

7/3/2009 1:48 15.01 52.31 63.55

7/3/2009 1:49 15.01 52.31 63.55

7/3/2009 1:50 15.02 52.31 59.79

7/3/2009 1:51 15.01 52.31 59.79

7/3/2009 1:52 15.03 52.31 59.79

7/3/2009 1:53 15.01 52.31 57.81

7/3/2009 1:54 15.01 52.31 59.79

7/3/2009 1:55 15.00 52.31 63.55

7/3/2009 1:56 15.02 52.31 55.77

7/3/2009 1:57 14.99 52.31 57.81

7/3/2009 1:58 14.99 52.31 61.70

7/3/2009 1:59 15.01 52.31 59.79

7/3/2009 2:00 15.06 52.31 55.77

7/3/2009 2:01 15.09 52.31 57.81

7/3/2009 2:02 15.06 52.31 60.09

7/3/2009 2:03 15.02 52.31 61.70

7/3/2009 2:04 14.98 52.31 57.81

7/3/2009 2:05 15.01 52.31 57.81

7/3/2009 2:06 14.98 52.31 57.81

7/3/2009 2:07 14.99 52.31 63.55

7/3/2009 2:08 14.99 52.31 59.79

7/3/2009 2:09 15.01 52.31 59.79

7/3/2009 2:10 15.01 52.31 59.79

7/3/2009 2:11 15.03 52.31 57.81

7/3/2009 2:12 15.01 52.31 63.55

7/3/2009 2:13 15.02 52.31 61.70

7/3/2009 2:14 15.01 52.31 59.79

7/3/2009 2:15 14.99 52.31 57.81

7/3/2009 2:16 15.01 52.31 63.55

7/3/2009 2:17 15.03 52.31 65.35

7/3/2009 2:18 15.04 52.31 61.70

7/3/2009 2:19 15.02 52.31 59.79

7/3/2009 2:20 15.02 52.31 59.79

7/3/2009 2:21 15.03 52.31 57.81

7/3/2009 2:22 15.01 52.31 59.79

7/3/2009 2:23 15.00 52.31 59.79

7/3/2009 2:24 15.02 52.31 61.70

7/3/2009 2:25 15.04 52.31 61.70

7/3/2009 2:26 15.01 52.31 55.77

7/3/2009 2:27 15.05 52.31 57.81

7/3/2009 2:28 15.00 52.31 59.79

7/3/2009 2:29 15.02 52.31 57.81

7/3/2009 2:30 15.00 52.31 55.77

7/3/2009 2:31 15.01 52.31 57.81

7/3/2009 2:32 15.02 52.31 56.18

7/3/2009 2:33 15.02 52.31 59.79

7/3/2009 2:34 15.03 52.31 61.70

7/3/2009 2:35 15.02 52.31 55.77

7/3/2009 2:36 15.03 52.31 61.70

7/3/2009 2:37 15.01 52.31 63.55

7/3/2009 2:38 15.02 52.31 57.81

7/3/2009 2:39 15.04 52.31 59.79

7/3/2009 2:40 15.03 52.31 63.55

7/3/2009 2:41 14.98 52.31 59.79

7/3/2009 2:42 14.98 52.31 58.98

7/3/2009 2:43 15.03 52.31 59.79

 7/10/2009 Page 2of 5 070309 flaring -loss of Calpine.xls Flare Flow
Flaring Flow Rate Calculation

Date and time when flaring began: 7/3/2009 0:00 Time set up earlier: min E10FI9239.PV

Date and time when flaring ended: 7/3/2009 6:15 Time interval: 1 min 1st flare flow equation constant

Time prolong: min 65.1 Intercept

36" Flare efficiency: 98 % 896.91 Slope

24" Flare efficiency: 98 %

Average flow to flare: 672 MSCFD 9/18/2013 13:36

36 Inch Flare Duration of flaring: 26 min

Total amount flared: 12,134 SCF

Duration of flaring: - MSCFD

24 Inch Flare Duration of flaring: - min

Total amount flared: - SCF

36 Inch Flare 24 Inch Flare 7/3/2009 5:06

Flare Release Summary

7/3/2009 2:44 15.00 52.31 63.55

7/3/2009 2:45 15.02 52.31 59.79

7/3/2009 2:46 15.01 52.31 65.35

7/3/2009 2:47 14.99 52.31 61.70

7/3/2009 2:48 15.01 52.31 60.17

7/3/2009 2:49 15.01 52.31 65.35

7/3/2009 2:50 15.00 52.31 57.81

7/3/2009 2:51 15.01 52.31 65.35

7/3/2009 2:52 15.01 52.31 63.55

7/3/2009 2:53 15.03 52.31 59.79

7/3/2009 2:54 15.04 52.31 59.79

7/3/2009 2:55 15.01 52.31 57.81

7/3/2009 2:56 15.03 52.31 59.79

7/3/2009 2:57 15.04 52.31 61.70

7/3/2009 2:58 15.05 52.31 57.81

7/3/2009 2:59 15.07 52.31 57.81

7/3/2009 3:00 15.10 52.31 57.81

7/3/2009 3:01 15.11 52.31 57.81

7/3/2009 3:02 15.11 52.31 61.70

7/3/2009 3:03 15.07 52.31 63.55

7/3/2009 3:04 14.99 52.31 57.81

7/3/2009 3:05 15.01 52.31 61.70

7/3/2009 3:06 15.03 52.31 61.70

7/3/2009 3:07 15.03 52.31 57.81

7/3/2009 3:08 15.02 52.31 57.81

7/3/2009 3:09 15.03 52.31 63.55

7/3/2009 3:10 15.02 52.31 65.35

7/3/2009 3:11 15.02 52.31 61.70

7/3/2009 3:12 15.04 52.31 63.55

7/3/2009 3:13 15.02 52.31 57.81

7/3/2009 3:14 15.04 52.31 59.79

7/3/2009 3:15 15.38 52.31 61.70

7/3/2009 3:16 16.36 52.37 59.79

7/3/2009 3:17 15.28 52.31 63.55

7/3/2009 3:18 14.69 52.29 59.79

7/3/2009 3:19 14.75 52.29 63.55

7/3/2009 3:20 14.88 52.31 61.70

7/3/2009 3:21 14.96 52.31 57.81

7/3/2009 3:22 14.98 52.31 59.79

7/3/2009 3:23 15.02 52.31 65.35

7/3/2009 3:24 15.04 52.31 63.55

7/3/2009 3:25 15.06 52.31 59.79

7/3/2009 3:26 15.05 52.31 63.55

7/3/2009 3:27 15.01 52.31 63.55

7/3/2009 3:28 14.97 52.31 57.81

7/3/2009 3:29 14.99 52.31 59.79

7/3/2009 3:30 15.01 52.31 63.55

7/3/2009 3:31 15.01 52.31 63.55

7/3/2009 3:32 15.00 52.31 59.79

7/3/2009 3:33 15.03 52.31 61.70

7/3/2009 3:34 15.00 52.31 61.70

7/3/2009 3:35 14.99 52.31 57.81

7/3/2009 3:36 15.04 52.31 63.55

7/3/2009 3:37 15.01 52.31 59.79

7/3/2009 3:38 15.05 52.31 65.35

7/3/2009 3:39 15.00 52.31 57.81

7/3/2009 3:40 15.03 52.31 57.81

7/3/2009 3:41 15.04 52.31 59.79

7/3/2009 3:42 14.98 52.31 61.70

7/3/2009 3:43 14.99 52.31 61.70

7/3/2009 3:44 15.00 52.31 65.35

7/3/2009 3:45 15.00 52.31 63.55

7/3/2009 3:46 15.01 52.31 57.81

7/3/2009 3:47 15.02 52.31 59.79

7/3/2009 3:48 15.00 52.31 59.79

7/3/2009 3:49 15.00 52.31 61.70

7/3/2009 3:50 15.00 52.31 65.35

7/3/2009 3:51 15.00 52.31 59.79

7/3/2009 3:52 15.03 52.31 59.79

7/3/2009 3:53 15.00 52.31 59.79

7/3/2009 3:54 15.01 52.31 61.70

7/3/2009 3:55 15.02 52.31 63.55

7/3/2009 3:56 15.02 52.31 63.55

7/3/2009 3:57 15.01 52.31 55.77

7/3/2009 3:58 15.00 52.31 57.81

7/3/2009 3:59 15.04 52.31 55.77

7/3/2009 4:00 15.04 52.31 61.70

7/3/2009 4:01 15.04 52.31 57.81

7/3/2009 4:02 14.98 52.31 59.79

7/3/2009 4:03 14.98 52.31 55.77

7/3/2009 4:04 14.98 52.31 61.70

7/3/2009 4:05 15.00 52.31 59.79

7/3/2009 4:06 15.02 52.31 63.55

7/3/2009 4:07 15.01 52.31 59.79

 7/10/2009 Page 3of 5 070309 flaring -loss of Calpine.xls Flare Flow
Flaring Flow Rate Calculation

Date and time when flaring began: 7/3/2009 0:00 Time set up earlier: min E10FI9239.PV

Date and time when flaring ended: 7/3/2009 6:15 Time interval: 1 min 1st flare flow equation constant

Time prolong: min 65.1 Intercept

36" Flare efficiency: 98 % 896.91 Slope

24" Flare efficiency: 98 %

Average flow to flare: 672 MSCFD 9/18/2013 13:36

36 Inch Flare Duration of flaring: 26 min

Total amount flared: 12,134 SCF

Duration of flaring: - MSCFD

24 Inch Flare Duration of flaring: - min

Total amount flared: - SCF

36 Inch Flare 24 Inch Flare 7/3/2009 5:06

Flare Release Summary

7/3/2009 4:08 15.01 52.31 63.55

7/3/2009 4:09 15.00 52.31 63.55

7/3/2009 4:10 15.00 52.31 61.70

7/3/2009 4:11 14.97 52.31 57.81

7/3/2009 4:12 14.97 52.31 59.79

7/3/2009 4:13 14.98 52.31 59.79

7/3/2009 4:14 14.99 52.31 63.55

7/3/2009 4:15 15.00 52.31 59.79

7/3/2009 4:16 15.00 52.31 59.79

7/3/2009 4:17 14.99 52.31 61.70

7/3/2009 4:18 14.99 52.31 63.55

7/3/2009 4:19 15.01 52.31 57.81

7/3/2009 4:20 15.01 52.31 55.77

7/3/2009 4:21 15.02 52.31 55.77

7/3/2009 4:22 15.01 52.31 55.77

7/3/2009 4:23 15.00 52.31 55.77

7/3/2009 4:24 15.02 52.31 57.81

7/3/2009 4:25 15.02 52.31 59.79

7/3/2009 4:26 15.01 52.31 55.77

7/3/2009 4:27 15.00 52.31 57.81

7/3/2009 4:28 15.02 52.31 61.70

7/3/2009 4:29 15.01 52.31 63.55

7/3/2009 4:30 15.02 52.31 57.81

7/3/2009 4:31 15.02 52.33 57.81

7/3/2009 4:32 15.00 52.31 63.55

7/3/2009 4:33 15.00 52.31 57.81

7/3/2009 4:34 15.01 52.31 57.81

7/3/2009 4:35 15.02 52.31 57.81

7/3/2009 4:36 15.03 52.31 59.79

7/3/2009 4:37 15.03 52.31 61.70

7/3/2009 4:38 15.02 52.31 63.55

7/3/2009 4:39 15.04 52.31 57.81

7/3/2009 4:40 15.05 52.31 63.55

7/3/2009 4:41 15.04 52.31 55.77

7/3/2009 4:42 15.07 52.31 57.81

7/3/2009 4:43 15.07 52.31 61.70

7/3/2009 4:44 15.07 52.31 61.70

7/3/2009 4:45 15.03 52.31 55.77

7/3/2009 4:46 15.05 52.31 61.70

7/3/2009 4:47 15.05 52.31 57.81

7/3/2009 4:48 15.02 52.33 57.81

7/3/2009 4:49 15.03 52.33 59.79

7/3/2009 4:50 15.02 52.33 57.81

7/3/2009 4:51 15.05 52.33 59.79

7/3/2009 4:52 15.04 52.33 57.81

7/3/2009 4:53 15.03 52.33 57.81

7/3/2009 4:54 15.02 52.33 63.55

7/3/2009 4:55 15.02 52.33 61.70

7/3/2009 4:56 15.02 52.33 59.79

7/3/2009 4:57 15.01 52.33 59.79

7/3/2009 4:58 15.01 52.33 63.55

7/3/2009 4:59 15.00 52.33 63.55

7/3/2009 5:00 15.02 52.33 59.79

7/3/2009 5:01 15.04 52.31 57.81

7/3/2009 5:02 15.03 52.33 65.35

7/3/2009 5:03 15.02 52.33 55.77

7/3/2009 5:04 15.01 52.31 57.81

7/3/2009 5:05 15.00 52.31 57.81

7/3/2009 5:06 15.01 52.33 63.55

7/3/2009 5:07 55.28 53.32 1 0.128019723 57.81 7/3/2009 5:07

7/3/2009 5:08 92.65 62.20 1 1.128240972 59.79 7/3/2009 5:08

7/3/2009 5:09 96.67 62.66 1 1.238593763 57.81 7/3/2009 5:09

7/3/2009 5:10 92.41 62.66 1 1.102146341 57.81 7/3/2009 5:10

7/3/2009 5:11 84.28 62.37 1 0.844336181 59.79 7/3/2009 5:11

7/3/2009 5:12 74.78 61.45 1 0.548935745 59.79 7/3/2009 5:12

7/3/2009 5:13 76.27 61.16 1 0.613763849 57.81 7/3/2009 5:13

7/3/2009 5:14 69.84 58.48 1 0.487285514 57.81 7/3/2009 5:14

7/3/2009 5:15 65.25 56.29 1 0.403385785 63.55 7/3/2009 5:15

7/3/2009 5:16 64.97 55.53 1 0.424070996 63.55 7/3/2009 5:16

7/3/2009 5:17 64.37 55.31 1 0.41016054 55.77 7/3/2009 5:17

7/3/2009 5:18 62.34 54.56 1 0.36229027 61.70 7/3/2009 5:18

7/3/2009 5:19 60.96 53.93 1 0.334271336 63.55 7/3/2009 5:19

7/3/2009 5:20 59.23 52.69 1 0.317676113 61.70 7/3/2009 5:20

7/3/2009 5:21 58.63 52.60 1 0.296987499 59.79 7/3/2009 5:21

7/3/2009 5:22 59.23 52.75 1 0.315201708 63.55 7/3/2009 5:22

7/3/2009 5:23 59.06 52.75 1 0.308152316 63.55 7/3/2009 5:23

7/3/2009 5:24 58.84 52.54 1 0.308186935 57.81 7/3/2009 5:24

7/3/2009 5:25 59.09 52.66 1 0.31310006 61.70 7/3/2009 5:25

7/3/2009 5:26 58.66 52.54 1 0.301103298 63.55 7/3/2009 5:26

7/3/2009 5:27 58.02 52.22 1 0.288579839 63.55 7/3/2009 5:27

7/3/2009 5:28 58.25 52.22 1 0.297726862 60.90 7/3/2009 5:28

7/3/2009 5:29 58.67 52.22 1 0.314696188 65.35 7/3/2009 5:29

7/3/2009 5:30 58.75 52.22 1 0.318083094 57.81 7/3/2009 5:30

7/3/2009 5:31 63.63 54.30 1 0.42384443 59.79 7/3/2009 5:31

 7/10/2009 Page 4of 5 070309 flaring -loss of Calpine.xls Flare Flow
Flaring Flow Rate Calculation

Date and time when flaring began: 7/3/2009 0:00 Time set up earlier: min E10FI9239.PV

Date and time when flaring ended: 7/3/2009 6:15 Time interval: 1 min 1st flare flow equation constant

Time prolong: min 65.1 Intercept

36" Flare efficiency: 98 % 896.91 Slope

24" Flare efficiency: 98 %

Average flow to flare: 672 MSCFD 9/18/2013 13:36

36 Inch Flare Duration of flaring: 26 min

Total amount flared: 12,134 SCF

Duration of flaring: - MSCFD

24 Inch Flare Duration of flaring: - min

Total amount flared: - SCF

36 Inch Flare 24 Inch Flare 7/3/2009 5:06

Flare Release Summary

7/3/2009 5:32 60.22 53.92 1 0.305277036 61.70 7/3/2009 5:32

7/3/2009 5:33 43.39 51.08 55.77

7/3/2009 5:34 27.09 50.40 57.81

7/3/2009 5:35 17.20 49.92 61.70

7/3/2009 5:36 14.54 49.86 61.70

7/3/2009 5:37 14.64 49.91 60.51

7/3/2009 5:38 14.69 49.97 59.79

7/3/2009 5:39 14.76 50.03 59.79

7/3/2009 5:40 14.80 50.09 59.79

7/3/2009 5:41 14.86 50.14 59.79

7/3/2009 5:42 14.90 50.21 61.70

7/3/2009 5:43 14.94 50.26 61.70

7/3/2009 5:44 14.98 50.33 63.55

7/3/2009 5:45 15.00 50.38 57.81

7/3/2009 5:46 15.00 50.44 59.79

7/3/2009 5:47 15.02 50.52 57.81

7/3/2009 5:48 15.02 50.58 61.70

7/3/2009 5:49 15.02 50.64 57.81

7/3/2009 5:50 15.01 50.69 65.35

7/3/2009 5:51 15.01 50.73 61.70

7/3/2009 5:52 14.99 50.79 63.55

7/3/2009 5:53 14.98 50.81 59.79

7/3/2009 5:54 14.98 50.87 63.55

7/3/2009 5:55 14.94 50.93 57.81

7/3/2009 5:56 14.89 50.98 65.35

7/3/2009 5:57 14.93 51.04 59.79

7/3/2009 5:58 14.91 51.10 61.70

7/3/2009 5:59 14.93 51.15 57.81

7/3/2009 6:00 14.93 51.21 61.70

7/3/2009 6:01 14.93 51.28 63.55

7/3/2009 6:02 14.93 51.33 59.79

7/3/2009 6:03 14.95 51.39 65.35

7/3/2009 6:04 14.95 51.44 63.55

7/3/2009 6:05 14.93 51.51 61.70

7/3/2009 6:06 14.94 51.56 59.79

7/3/2009 6:07 14.94 51.62 65.35

7/3/2009 6:08 14.93 51.68 59.79

7/3/2009 6:09 15.03 51.74 59.79

7/3/2009 6:10 15.62 51.83 63.55

7/3/2009 6:11 15.62 51.88 59.79

7/3/2009 6:12 15.03 51.91 57.81

7/3/2009 6:13 14.75 63.55

7/3/2009 6:14

 7/10/2009 Page 5of 5 070309 flaring -loss of Calpine.xls Flare Flow
Calculation of Flare Emissions: West Plant

Date and time when flaring began: Date of Report 7/10/2009 0:00Date and time when flaring ended: Report Author S. Peters

Incident: 0 Time set up earlier: 0 min

Time interval: 1 min

Time prolong: 0 min

V l f Fl Pi i d E i t Pl t Sit West

7/3/2009 0:007/3/2009 6:14

Volume of Flare Piping and Equipment= Plant Site: West

Total Release to Flare = 12,134 SCF Steam / Air: STEAM

Component 

MW HHV

Component vol % SCF lb-mol (lb/lb-mol) lb (Btu/SCF) MMBtu

#H2:Hydrogen,mol% 38.04 12.16 2.02 24.57 325 1

4,615

#N2: Nitrogen #N2: Nitrogen 32.55 3,949 10.41 28.01 291.48 0 0#O2: Oxygen 0.00 - 0.00 32 0.00 0 0

#CO: Carbon Monoxide 0.00 - 0.00 28.01 0.00 321 0#CO2: Carbon diOxide 0.06 8 0.02 44.01 0.87 0 0#H2S: Hydrogen Sulfi 2.34 284 0.75 34.08 25.50 646 0#C1: Methane 8.68 1,054 2.78 16.04 44.53 1012 1#C2=: Ethylene 1.15 140 0.37 28.06 10.34 1773 0

#C2: Ethane 1.43 174 0.46 30.08 13.76 1773 0

#C3 P: ropane 2.17 0.69 44.11 30.59 2524 0

263 0 69 44 11 30 59 2524 0 

#C3=: Propylene 1.45 0.46 42.09 19.46 2524 0

175

#IC4: iso-Butane 1.13 137 0.36 58.14 21.01 3261 0#IC4=: iso-Butene 0.16 19.54 0.05 56.12 2.89 3261 0#C4=1: 1-Butene 0.10 12.26 0.03 56.12 1.81 3271 0#C4==: 1,3-Butadiene 0.00 - 0.00 54.09 0.00 3271 0#NC4: n-Butane 4.08 495 1.31 58.14 75.90 3271 1#TC4=: trans-2-Buten -2-Buten 0.12 14.68 0.04 56.1 2.17 3271 0#CC4=: cis-2-Butene 0.10 12 0.03 56.1 1.74 3271 0

#IC5: iso-Pentane 9.47 1,148 3.03 72.15 218.35 4011 4

#NC5: n-Pentane 1.01 122 0.32 72.15 23.25 4020 0

#C6+: Hexane plus 1.43 174 0.46 86.17 39.45 4768 0

Benzene 0.00 - - 78.11 0.00 3752 -Total 105.46 12797 26.511 848 984 

Total VOC (C3+) = 446.96 lb

Overall HHV: 984.40 Btu/SCF

Page 1 of 

5 
VOC emissions from flare, assuming 98 % destruction efficiency*:

= 0.02 447 lb VOC to flare= 8.94 lb VOC to atmosphere from flare

H2S emissions from flare assuming H2S emissions from flare, assuming 98 % destruction efficiency % destruction efficiency*:

= 0.02 25 lb H2S to flare= 0.51 lb H2S to atmosphere from flare

Combustion emissions:

TNRCC Flare Emission Factors* NOx CO

(lb/MMBtu) (lb/MMBtu)

Steam-assisted: High Btu (>1000 Btu/scf) 0.0485 0.3503

Low Btu (192-1000 Btu/scf) 0.068 0.3465

Air-assisted: High Btu (>1000 Btu/scf) 0.138 0.2755

Low Btu (192-1000 Btu/scf) 0.0641 0.5496

Flare emission factors: NOx = 0.0680 lb/MMBtu

CO = 0.3465 lb/MMBtu

Using emission factors,

Ambient NOx emissions = 13 MMBtu 0.068 lb

MMBtu

= 0.86 lb NOx

CO emissions = 13 MMBtu 0.3465 lb

MMBtu

= 4.36 lb CO

Page 2 of 

5 
Material Balance for SO2 emissions =

= 278.3 scf H2S lbmol 1 lbmol SO2 64 lb SO2

379.5 scf 1 lbmol H2S lbmol

= 46.93 lb SO2

Summary of Flare Emissions Summary of Flare Emissions Reportable Quantity Reportable Quantity

CH4 (Methane): lb 0.9 Green house effect

CH2 (Ethane): lb 0.3 Green house effect

C2H4 (Ethylene): lb 0.2 lb per 24 hrs 5,000

C3H8 (Propane): lb 0.6 lb per 24 hrs 5,000

C3H6 (Propylene): lb 0.4 lb per 24 hrs 5,000

I-C4 (iso-Butane): lb 0.4 lb per 24 hrs 5,000

nC4(n Butane): n-Butane): lb 1.5 lb 5,000 lb per 24 hrs

C4=1 (1-Butene): lb 0.0 lb per 24 hrs 5,000

IC4= (iso-Butene): lb 0.1 lb per 24 hrs 5,000

TC4= (trans-2-Butene): lb 0.0 lb per 24 hrs 5,000

CC4= (cis-2-Butene): lb 0.0 lb per 24 hrs 5,000

C4== (1,3-Butadiene): - lb lb per 24 hrs 10

IC5 (iso-Pentane): lb 4.4 lb per 24 hrs 5,000

NC5 (n-Pentane): lb 0.5 lb per 24 hrs 5,000

C6+ (H l ) C6+ (Hexane plus) lb 0 8. lb lb per 24 hrs 5,000 lb 24 h

Benzene: 0.0 lb** lb per 24 hrs 10

SO2 : 46.9 lb lb per 24 hrs 500

NOx : lb 0.9 lb per 24 hrs(TCEQ) 200 10

CO : lb 4.4 lb per 24 hrs 5,000

H2S: lb 0.5 100 lb per 24 hrs

Destruction efficiencies and flare factors are from the "July 1996 TNRCC Technical Guidance Package for Flare Sources"Assume C6+ compounds are 3.3 % benzene, if no benzene sample data available.

Page 3 of 

5 
38FCD is the daily sample from FGRU compressor dicharge KO drum. Sample search back t

43FSF is the special sample from 1st stage flare KO drum.Please use WinBLSS - Get Stream Data Search function to check up the proper "Sample Date" t

Lab sampling results 0 

Sampling date: 6/29/2009 5:00:00 AM Sampling date: 7/4/2009 5:00:00 

 Sample choice as: S l hi Worst Case 4 701FCD 710FCD 

Worst Case Senerio is used. RESULTS VALUE UOM RESULT

GRVCSP: Spc Grv Gas Air = 1.0 0.4962 GRVCSP: Spc Grv Gas Air = 1NBTU: NET BTU REAL GAS @60F 783 NBTU: NET BTU REAL GAS @60

NBTU: NET BTU REAL GAS @60F 624.7 MWCAL: Molecular Weight 14.2 MWCAL: Molecular Weigh

#H2:Hydrogen,mol% 38.035 #H2:Hydrogen,mol% 69.14 mol% #H2:Hydrogen,mol% #N2: Nitrogen 32.546 #N2: Nitrogen 5.31 mol% #N2: Nitroge

#O2: Oxygen 0 783 

Worst Case

#O2: Oxygen 0 783 #CO: Carbon Monoxide 0 #CO: Carbon Monoxide 0 mol% #CO: Carbon Monoxid

#CO2: Carbon diOxide 0.062 #CO2: Carbon diOxide 0.06 mol% #CO2: Carbon diOxid

#H2S: Hydrogen Sulfi 2.34 #H2S: Hydrogen Sulfide 0.04 mol% #H2S: Hydrogen Sulfid

#C1: Methane 8.683 #C1: Methane 7.58 mol% #C1: Methan

#C2L:Ethane and Ligh 11.266 #C2L:Ethane and Lighter,mol% 9.87 mol% #C2L:Ethane and Lighter,mol% #C2=: Ethylene 1.152 #C2=: Ethylene 0.36 mol% #C2=: Ethylen

#C2: Ethane 1.431 #C2: Ethane 1.93 mol% #C2: Ethan

#C3 P 2 169 #C3 P 3 16 l% #C3 P 

Worst Case

#C3: Propane 2.169 #C3: Propane 3.16 mol% #C3: Propan#C3=: Propylene 1.446 #C3=: Propylene 0.77 mol% #C3=: Propylen

#IC4: iso-Butane 1.13 #IC4: iso-Butane 4.1 mol% #IC4: iso-Butan

#IC4=: iso-Butene 0.161 #IC4=: iso-Butene 0.14 mol% #IC4=: iso-Buten

#C4=1: 1-Butene 0.101 #C4=1: 1-Butene 0.1 mol% #C4=1: 1-Buten

#C4==: 1,3-Butadiene 0 #C4==: 1,3-Butadiene 0 mol% #C4==: 1,3-Butadien

#NC4: n-Butane 4.083 #NC4: n-Butane 3.4 mol% #NC4: n-Butan

#TC4=: trans-2-Buten 0.121 #TC4=: trans-2-Butene 0.11 mol% #TC4=: trans-2-Buten

Worst Case

#TC4=: trans-2-Buten 0.121 #TC4=: trans-2-Butene 0.11 mol% #TC4=: trans-2-Buten#CC4=: cis-2-Butene 0.097 #CC4=: cis-2-Butene 0.09 mol% #CC4=: cis-2-Buten#C4+: Butane Plus 0.48 #C4+: Butane Plus 11.58 mol% #C4+: Butane Plu

#IC5: iso-Pentane 9.465 #IC5: iso-Pentane 0.57 mol% #IC5: iso-Pentan#NC5: n-Pentane 1.008 #NC5: n-Pentane 0.6 mol% #NC5: n-Pentan#C5+: Pentane plus 0.655 #C5+: Pentane plus NR mol% #NC5: n-Pentan

#C6+: Hexane plus 1.432 #C6+: Hexane plus 2.47 mol% #C6+: Hexane plu

#C4=: Butenes 0 #C4=: Butenes 0.44 mol% #C4=: Butene

Worst Case

Benzene 0 @BZ:Benzene,ppm NR ppmv @BZ:Benzene,pp

105.462

Worst Case

Page 4 of 

5 
710FCD:Flare Gas

701FCD:E. plant Flar

Worst Case Senerio VALUE

GRVCSP: Spc Grv Gas Air = 1.0 0.74022NBTU: NET BTU REAL GAS @60F 624.7MWCAL: Molecular Weight 21.26#H2:Hydrogen,mol% 38.035#N2: Nitrogen 32.546

#CO: Carbon Monoxide 0#CO2: Carbon diOxide 0.062#H2S: Hydrogen Sulfide 2.34 12/14/07 through 12/26/07/2003 11:58:00 PM 701FCD:E. plant Flar#C1: Methane 8.683#C2L:Ethane and Lighter,mol% 11.266#C2=: Ethylene 1.152#C2: Ethane 1.431#C3 P: ropane 2.169 #C3=: Propylene 1.446#IC4: iso-Butane 1.13#IC4=: iso-Butene 0.161#C4=1: 1-Butene 0.101#C4==: 1,3-Butadiene 0#NC4: n-Butane 4.083#TC4=: trans-2-Butene -2-Butene 0.121#CC4=: cis-2-Butene 0.097#C4=: Butenes 0.48#C4+: Butane Plus 9.465#IC5: iso-Pentane 1.008#NC5: n-Pentane 0.655#C6+: Hexane plus 1.432

Page 5 of 

5 
Calculation of Flare Emissions: West Plant

Date and time when flaring began: Date of Report 1/0/1900 0:00Date and time when flaring ended: Report Author 1/0/1900 0:00

Incident: 0 Time set up earlier: 0 min

Time interval: 1 min

Time prolong: 0 min

Volume of Flare Piping and Equipment= Plant Site: West

7/3/2009 0:007/3/2009 6:15

Volume of Flare Piping and Equipment= Plant Site: West

Total Release to Flare = - SCF Steam / Air: STEAM

Component 

MW HHV

Component vol % SCF lb-mol (lb/lb-mol) lb (Btu/SCF) MMBtu

#H2:Hydrogen,mol% 52.88 - 0.00 2.02 0.00 325 0.00

#N2: Nitrogen 18.61 - 0.00 28.01 0.00 0 0.00

#O2: Oxygen 2.20 - 0.00 32 0.00 0 0.00

#CO: Carbon Monoxide 0.11 - 0.00 28.01 0.00 321 0.00

#CO2: Carbon diOxide 0.20 - 0.00 44.01 0.00 0 0.00#H2S: Hydrogen Sulfi 0.00 - 0.00 34.08 0.00 646 0.00

#C1: Methane 16.29 - 0.00 16.04 0.00 1012 0.00#C2=: Ethylene 2.07 - 0.00 28.06 0.00 1773 0.00#C2: Ethane 2.79 - 0.00 30.08 0.00 1773 0.00

#C3: Propane 0.90 - 0.00 44.11 .00 44.11 0.00 2524 0.00#C3=: Propylene 1.69 - 0.00 42.09 0.00 2524 0.00#IC4: iso-Butane 0.31 - 0.00 58.14 0.00 3261 0.00#IC4=: iso-Butene 0.14 - 0.00 56.12 0.00 3261 0.00#C4=1: 1-Butene 0.10 - 0.00 56.12 0.00 3271 0.00#C4==: 1,3-Butadiene 0.00 - 0.00 54.09 0.00 3271 0.00#NC4: n-Butane 0.33 - 0.00 58.14 0.00 3271 0.00#TC4=: trans-2-Buten 0.12 - 0.00 56.1 0.00 3271 0.00#CC4=: cis 2 Butene #CC4=: cis-2-Butene 0 11 . - 0 00 . 56 1. 0 00 . 3271 0 00 .#IC5: iso-Pentane 0.52 - 0.00 72.15 0.00 4011 0.00#NC5: n-Pentane 0.61 - 0.00 72.15 0.00 4020 0.00#C6+: Hexane plus 2.20 - 0.00 86.17 0.00 4768 0.00Benzene 0.00 - - 78.11 0.00 3752 -

Total 102.18 0 15.592 - #DIV/0! 0

Total VOC (C3+) = 0.00 lb

Overall HHV: #DIV/0! Btu/SCF

Page 1 of 

5 
VOC emissions from flare, assuming 98 % destruction efficiency*:

= 0.02 0 lb VOC to flare

= 0.00 lb VOC to atmosphere from flare

H2S emissions from flare, assuming H2S emissions from flare, assuming 98 % destruction efficiency % destruction efficiency :*

= 0.02 0 lb H2S to flare= 0.00 lb H2S to atmosphere from flare

Combustion emissions:

TNRCC Flare Emission Factors* NOx CO

(lb/MMBtu) (lb/MMBtu)

Steam-assisted: High Btu (>1000 Btu/scf) 0.0485 0.3503

Low Btu (192-1000 Btu/scf) 0.068 0.3465

Air-assisted: High Btu (>1000 Btu/scf) 0.138 0.2755

Low Btu (192-1000 Btu/scf) 0.0641 0.5496

Flare emission factors: NOx = 0.0680 lb/MMBtu

CO = 0.3465 lb/MMBtu

Using emission factors,

Ambient NOx emissions = 0 MMBtu 0.068 lb

MMBtu

= 0.00 lb NOx

CO emissions = 0 MMBtu 0.3465 lb

MMBtu

= 0.00 lb CO

Material Balance for SO2 emissions =

= 0.0 scf H2S lbmol 1 lbmol SO2 64 lb SO2

379.5 scf 1 lbmol H2S lbmol

= 0.00 lb SO2

Page 2 of 

5 
Summary of Flare Emissions Reportable Quantity

CH4 (Methane): - lb Green house effect

CH2 (Ethane): - lb Green house effect

C2H4 (Ethylene): - lb lb per 24 hrs 5,000

C3H8 (Propane): - lb lb per 24 hrs 5,000

C3H6 (Propylene): - lb lb per 24 hrs 5,000

I-C4 (iso-Butane): - lb lb per 24 hrs 5,000

nC4 (n-Butane): nC4 (n-Butane): - lb 5 000 , lb per 24 hrs lb per 24 hrs

C4=1 (1-Butene): - lb lb per 24 hrs 5,000

IC4= (iso-Butene): - lb lb per 24 hrs 5,000

TC4= (trans-2-Butene): - lb lb per 24 hrs 5,000

CC4= (cis-2-Butene): - lb lb per 24 hrs 5,000

C4== (1,3-Butadiene): - lb lb per 24 hrs 10

IC5 (iso-Pentane): - lb lb per 24 hrs 5,000

NC5 (n-Pentane): - lb lb per 24 hrs 5,000

C6+ (H l ) C6+ (Hexane plus) - lb lb per 24 hrs 5 000, lb 24 h

Benzene: - lb** lb per 24 hrs 10

SO2 : - lb lb per 24 hrs 500

NOx : - lb lb per 24 hrs(TCEQ) 200 1000 

CO : - lb lb per 24 hrs 5,000

H2S: - lb 100 lb per 24 hrs

Destruction efficiencies and flare factors are from the "July 1996 TNRCC Technical Guidance Package for Flare Sources"Assume C6+ compounds are 3.3 % benzene, if no benzene sample data available.

Page 3 of 

5 
38FCD is the daily sample from FGRU compressor dicharge KO drum. Sample search back 

43FSF is the special sample from 1st stage flare KO drum.Please use WinBLSS - Get Stream Data Search function to check up the proper "Sample Date" t

Lab sampling results 0 

Sampling date: NR Sampling date: 7/4/2009 5:00:00 

Sample choice as: 3 710FSF 710FCD 

Warning! H2S Concentration shown as 0. Check sample data!

Sample 701FCD10choice as: 3 710FSF 710FCD 

710FCD is used. RESULTS VALUE UOM RESUL

GRVCSP: Spc Grv Gas Air = 1.0 NR GRVCSP: Spc Grv Gas Air = 1

NBTU: NET BTU REAL GAS @60F NR NBTU: NET BTU REAL GAS @6

NBTU: NET BTU REAL GAS @60F 604 MWCAL: Molecular Weight NR MWCAL: Molecular Weig

#H2:Hydrogen,mol% 52.88 #H2:Hydrogen,mol% NR mol% #H2:Hydrogen,mo#N2: Nitrogen 18.61 #N2: Nitrogen NR mol% #N2: Nitrog#O2: Oxygen 2.2 NR 

Warning! 710FCD H2S Concentration maybe not normal. Check sample data!

701FCD10

#CO: Carbon Monoxide 0.11 #CO: Carbon Monoxide NR mol% #CO: Carbon Monoxi

#CO2: Carbon diOxide 0.2 #CO2: Carbon diOxide NR mol% #CO2: Carbon diOxi

#H2S: Hydrogen Sulfi 0 #H2S: Hydrogen Sulfide NR mol% #H2S: Hydrogen Sulfi

#C1: Methane 16.29 #C1: Methane NR mol% #C1: Metha#C2L:Ethane and Ligh 21.15 #C2L:Ethane and Lighter,mol% NR mol% #C2L:Ethane and Lighter,mo

#C2=: Ethylene 2.07 #C2=: Ethylene NR mol% #C2=: Ethyle

#C2: Ethane 2.79 #C2: Ethane NR mol% #C2: Etha

#C3: Propane 0.9 #C3: Propane NR mol% #C3: Propa

701FCD10

#C3: Propane 0.9 #C3: Propane NR mol% #C3: Propa#C3=: Propylene 1.69 #C3=: Propylene NR mol% #C3=: Propyle

#IC4: iso-Butane 0.31 #IC4: iso-Butane NR mol% #IC4: iso-Buta

#IC4=: iso-Butene 0.14 #IC4=: iso-Butene NR mol% #IC4=: iso-Bute#C4=1: 1-Butene 0.1 #C4=1: 1-Butene NR mol% #C4=1: 1-Bute

#C4==: 1,3-Butadiene 0 #C4==: 1,3-Butadiene NR mol% #C4==: 1,3-Butadie

#NC4: n-Butane 0.33 #NC4: n-Butane NR mol% #NC4: n-Buta

#TC4=: trans-2-Buten 0.12 #TC4=: trans-2-Butene NR mol% #TC4=: trans-2-Bute

#CC4=: cis 2 Butene 0 11 #CC4=: cis 2 Butene NR mol% #CC4=: cis 2 Bute

701FCD10

#CC4=: cis-2-Butene 0.11 #CC4=: cis-2-Butene NR mol% #CC4=: cis-2-Bute#C4+: Butane Plus 4.44 #C4+: Butane Plus NR mol% #C4+: Butane P#IC5: iso-Pentane 0.52 #IC5: iso-Pentane NR mol% #IC5: iso-Penta

#NC5: n-Pentane 0.61 #NC5: n-Pentane NR mol% #NC5: n-Penta

#C5+: Pentane plus 0 #C5+: Pentane plus NR mol% #NC5: n-Penta

#C6+: Hexane plus 2.2 #C6+: Hexane plus NR mol% #C6+: Hexane p

#C4=: Butenes 0.47 #C4=: Butenes NR mol% #C4=: ButenBenzene 0 @BZ:Benzene,ppm NR ppmv @BZ:Benzene,p

701FCD10

102.65

701FCD

Page 4 of 

5 
710FCD:Flare Gas

710FSF:Flare Gas

Worst Case Senerio VALUE

GRVCSP: Spc Grv Gas Air = 1.0 0.74022NBTU: NET BTU REAL GAS @60F 624.7MWCAL: Molecular Weight 21.26#H2:Hydrogen,mol% 38.035#N2: Nitrogen 32.546

#CO: Carbon Monoxide 0#CO2: Carbon diOxide 0.062#H2S: Hydrogen Sulfide 2.34 12/14/07 through 12/26/07/2003 11:58:00 PM 701FCD:E. plant Flar#C1: Methane 8.683#C2L:Ethane and Lighter,mol% 11.266#C2=: Ethylene 1.152#C2: Ethane 1.431#C3: Pro #C3: Propane 2.169#C3=: Propylene 1.446#IC4: iso-Butane 1.13#IC4=: iso-Butene 0.161#C4=1: 1-Butene 0.101#C4==: 1,3-Butadiene 0#NC4: n-Butane 4.083#TC4=: trans-2-Butene 0.121#CC4=: cis 2 Butene #CC4=: cis-2-Butene 0 097 .#C4=: Butenes 0.48#C4+: Butane Plus 9.465#IC5: iso-Pentane 1.008#NC5: n-Pentane 0.655#C6+: Hexane plus 1.432

Page 5 of 

5 
Sample ID 1700893 1700444 1699258 1

Sample Date 12/26/2007 5:00 12/25/2007 5:00 12/22/2007 5:00 12/20/20Code 701FCD:E. plant Flar 701FCD:E. plant Flar 701FCD:E. plant Flar 701FCD:E. plaCommentNBTU: NET BTU REAL GAS @60F 1496 1399 115 GRVCSP: Spc Grv Gas Air = 1.0 1.1028 1.0449 0.985 

MWCAL: Molecular Weight 31.3 29.7 28.6 

#H2:Hydrogen,mol% 32.08 32.43 2 #N2: Nitrogen 14.19 15.06 73.62 

#O2: Oxygen 0 0 18.03 

#CO: Carbon Monoxide 000#CO2: Carbon diOxide 0.11 0.11 0.05 

#H2S: Hydrogen Sulfide 0.27 0.29 0 

#C1: Methane 11.12 11.78 3.48 

#C2L:Ethane and Lighter,mol% 13.46 14.19 3.82 #C2=: Ethylene 0.95 1 0.14 

#C2: Ethane 1.39 1.41 0.2 

#C3: Propane 7.58 7.51 0.78 

#C3=: Propylene 1.91 1.86 0.13 

#IC4: iso-Butane 3.43 3.37 0.23 

#IC4=: iso-Butene 0.23 0.24 0 

#C4=1: 1-Butene 0.13 0.13 0 

#C4==: 1,3-Butadiene 000#NC4: n-Butane 16.18 18.36 0.99 

#TC4=: trans-2-Butene 0.16 0.16 0 

#CC4=: cis-2-Butene 0.13 0.12 0 

#C4=: Butenes 0.65 0.65 0 

#C4+: Butane Plus 26.52 26.05 1.42 

#IC5: iso-Pentane 1.98 1.7 0.15 

#NC5: n-Pentane 2.17 1.09 0 

#C6+: Hexane plus 5.99 3.38 0.2 

Page 1 of 

2 
1697835 1697358 1696864 1696530 1696190 

12/19/2007 5:00 12/18/2007 5:00 12/17/2007 5:00 12/16/2007 5:00 12/15/2007 5:00 12/

701FCD:E. plant Flar 701FCD:E. plant Flar 701FCD:E. plant Flar 701FCD:E. plant Flar 701FCD:E. plant Flar 701FCD:

804 542 363 380 149 

0.5697 0.621 0.6693 0.6471 0.6999 

16.2 17.8 19.4 18.7 20.3 

57.5 47.76 38.66 41.13 31.42 

10.43 29.1 41.07 37.62 54.16 

0 2.75 0.74 0.01 9.95 00000

0.07 0.11 0.01 0 0.01 0.66 0.6 8.8 10.26 0.53 

12.83 7.68 4.27 4.45 1.69 

17.06 10.4 6.81 7.08 2.93 

2.37 1.46 0.66 0.69 0.69 

1.86 1.26 1.88 1.94 0.55 

1.1 1.13 0.76 0.76 0.18 

3.33 1.66 0.71 0.74 0.62 

1.19 1.01 0.46 0.47 0.06 

0.47 0.16 0.07 0.07 0.03 

0.32 0.1 0.04 0.04 0.01 

00000

1.48 1.71 0.45 0.47 0.04 

0.39 0.12 0.04 0.04 0.02 

0.3 0.1 0.04 0.04 0.01 

1.48 0.48 0.19 0.19 0.07 

6.38 4.61 10.67 12.04 0.72 

2.73 1.6 0.36 0.37 0 

1.39 0.87 0.21 0.23 0 

1.57 0.81 0.77 0.65 0.02 

Page 2 of 

2 
E10FI9239.PV

MMSCFD

300.7861

349.6042

354.8277

280.9392

293.6151

284.4338

287.0501

196.0526

0.42938 298.1807 429380.2

0.43825 304.3405 438250.3

0.438279 304.3602 438278.7

0.436191 302.9102 436190.6

0.430735 299.1214 430734.8

0.428181 297.3481 428181.2

0.420781 292.2088 420780.7

0.433015 300.7048 433015

0.437055 303.5102 437054.7

0.432195 300.1357 432195.4

0.451331 313.424 451330.6

434126.6

Page 1 of 1 070309 flaring -loss of Calpine.xls Intercept
Sample ID 1711917 1711566 1711240 17108

Sample Date 1/21/2008 5:00 1/20/2008 5:00 1/19/2008 5:00 1/18/2008 5:Code 710FCD:Flare Gas 710FCD:Flare Gas 710FCD:Flare Gas 710FCD:Flare Gas CommentNBTU: NET BTU REAL GAS @60F 734 856 620 6GRVCSP: Spc Grv Gas Air = 1.0 0.518 0.5988 0.4462 0.47MWCAL: Molecular Weight 14.8 17.1 12.9 13#H2:Hydrogen,mol% 59.55 54.97 61.09 60.#N2: Nitrogen 10.48 9.47 11.33 11.#O2: Oxygen 0 0.02 0.03 0.#CO: Carbon Monoxide 0.12 0.13 0.18 0.#CO2: Carbon diOxide 0.05 0.16 0.08 0.#H2S: Hydrogen Sulfide 0.23 0.23 0.02 #C1: Methane 14.59 14.7 17.39 15.#C2L:Ethane and Lighter,mol% 17.45 17.91 20.06 18.#C2=: Ethylene 1.02 1.02 1.12 1.#C2: Ethane 1.84 2.19 1.55 1.#C3: Propane 1.65 4.5 0.71 0.#C3=: Propylene 1.93 1.83 1.44 2.#IC4: iso-Butane 1.11 2.26 0.23 #IC4=: iso-Butene 0.17 0.18 0.11 0.#C4=1: 1-Butene 0.1 0.1 0.07 0.#C4==: 1,3-Butadiene 000#NC4: n-Butane 2.34 3.71 0.25 0.#TC4=: trans-2-Butene 0.11 0.12 0.05 0.#CC4=: cis-2-Butene 0.09 0.09 0.04 0.#C4=: Butenes 0.47 0.49 0.27 0#C4+: Butane Plus 5.6 8.13 2.91 3.#IC5: iso-Pentane 1.73 1.54 1 1.#NC5: n-Pentane 1.44 1.34 1.19 1.#C6+: Hexane plus 1.45 1.44 2.14 1.

Page 1 of 3 070309 flaring 
Sample ID 1712800

Sample Date 1/22/2008Code 701FCD:E. plant FlarComment SPECIALNBTU: NET BTU REAL GAS @60F 115GRVCSP: Spc Grv Gas Air = 1.0 0.904MWCAL: Molecular Weight 26.2#H2:Hydrogen,mol% 11.38#N2: Nitrogen 68.31#O2: Oxygen 16.29#CO: Carbon Monoxide 0#CO2: Carbon diOxide 0.03#H2S: Hydrogen Sulfide 0#C1: Methane 1.64#C2L:Ethane and Lighter,mol% 2.23#C2=: Ethylene 0.16#C2: Ethane 0.43#C3: Propane 0.47#C3=: Propylene 0.19#IC4: iso-Butane 0.09#IC4=: iso-Butene 0.01#C4=1: 1-Butene 0#C4==: 1,3-Butadiene 0#NC4: n-Butane 0.13#TC4=: trans-2-Butene 0#CC4=: cis-2-Butene 0#C4=: Butenes 0.01#C4+: Butane Plus 0.85#IC5: iso-Pentane 0.13#NC5: n-Pentane 0.13#C6+: Hexane plus 0.62

Page 2 of 3 070309 flaring 
Sample ID 1708364 1704508 1704117 17035

Sample Date 1/12/2008 18:00 1/3/2008 12:00 1/2/2008 12:00 1/1/2008 12:Code 710FSF:Flare Gas 710FSF:Flare Gas 710FSF:Flare Gas 710FSF:Flare Gas CommentNBTU: NET BTU REAL GAS @60F 803GRVCSP: Spc Grv Gas Air = 1.0 0.5952 NoSmple No Smple No SmpMWCAL: Molecular Weight 17 PendingH2SDRE:H2SPPM < 1#H2:Hydrogen,mol% 53.31 Pending#N2: Nitrogen 12.89 Pending#O2: Oxygen 0.03 Pending#CO: Carbon Monoxide 0.13 Pending#CO2: Carbon diOxide 0.11 Pending#H2S: Hydrogen Sulfide 0 Pending#C1: Methane 16.19 Pending#C2L:Ethane and Lighter,mol% 18.94 Pending#C2=: Ethylene 1.15 Pending#C2: Ethane 1.6 Pending#C3: Propane 3.8 Pending#C3=: Propylene 1.9 Pending#IC4: iso-Butane 0.62 Pending#IC4=: iso-Butene 0.17 Pending#C4=1: 1-Butene 0.1 Pending#C4==: 1,3-Butadiene 0 Pending#NC4: n-Butane 1.75 Pending#TC4=: trans-2-Butene 0.1 Pending#CC4=: cis-2-Butene 0.09 Pending#C4=: Butenes 0.46 Pending#C4+: Butane Plus 5.47 Pending#IC5: iso-Pentane 1.57 Pending#NC5: n-Pentane 1.83 Pending#C6+: Hexane plus 2.64 Pending

Page 3 of 3 070309 flaring