MSCC Date Duration LBS S02 Reason

1 st qtr 05 0 2nd qtr 05 4/2112005 2 hrs 522 Unexpected change in feed gas

6/14/2005 2 hrs 115 Power malfunction 6/20/2005 2 hrs 816 Power malfunction 3rd qtr 05 8/15/2005 2 hrs 1,680 Excessive liquids in feed gas

8/15/2005 2 hrs 9,519 Excessive liquids in feed gas 8/15/2005 2 hrs 59 Excessive liquids in feed gas 9/19/2005 2 hrs 110 Excessive hydrocarbons and vaiable flow 9/21/2005 2 hrs 106 Excessive hydrocarbons and vaiable flow 4th qtr 05 10/5/2005 2 hrs 11,645 Power failure of grid/backup power failure

10/5/2005 2 hrs 12,421 Power failure of grid/backup power failure 10/13/2005 2 hrs 1,309 BacKup generator tauure during piannea power maintenance 10/13/2005 2 hrs 2,365 Mcicup generator failure during planned power maintenance 1 st qtr 06 0 2nd qtr 06 0 3rd qtr 06 9/16/2006 2 hrs 7,413 Power failure/other facility malfunctions

9/16/2006 2 hrs 3,199 Power failure/other facility malfunctions 4th qtr 06 10/16/2006 2 hrs 8,322 Sulfur Recovery Plant Shutdown and restart

10/16/2006 2 hrs 5,722 Sulfur Recovery Plant Shutdown and restart 10/29/2006 2 hrs 350 Excessive hydrocarbons in feed 1 st qtr 07 0 2nd qtr 07 6/7/2007 ? 155 Utility power failure Conoco Phillips Date Duration LBS S02 Reason 1 st qtr 05 1/7/2005 ? 1,200 ?

1/18/2005 ? 200 ? 3/11/2005 ? 10,280 ? . 2nd qtr 05 4/18/2005 ? 140 ? 3rd qtr 05 7/1/2005 ? 40 ?

8/3/2005 ? 36,080 ? 8/4/2005 ? 1,620 ? 4th qtr 05 11/21/2005 ? 160

11/22/2005 ? - 120 ? 11/23/2005 ? 120 ? 11/24/2005 ? 120 ? 11/25/2005 ? 80 ? 11/26/2005 ? 340 ? 11/27/2005 ? 60 ? 11/28/2005 ? 40 ? 11/29/2005 ? 260 ? 1 2/7/2005 ? 780 ? -- 12/26/2005 ? 120 ? 12/27/2005 ? 280 ? 12/28/2005 ? 100 ? ~ 12/29/2005 ? 60 ? HHHOYt (12/30/2005 ? 20 ? 12/31/2005 ? 260 ? 1 st qtr 06 1l3/2006

1 ' ? 80 ? 174 /2006 ? 6,100 ? 1/5/2006 ? 2,440 ? 1/1812006 ? 580 ? 1/19/2006 ? 220 ? 1/20/2006 ? 160 ? 1125/2006 ? 920 ? 2/7/2006 ? 2,500 ? 218/2006 ? 2,500 ? 2/15/2006 ? 300 ? 2/16/2006 ? 600 ? 2/17/2006 ? 2,100 ? 2118/2006 ? 2,000 ? 2/20/2006 ? 2,000 ? 2/2212006 ? 1,000 ? 2/27/2006 ? 2,000 ? 3/1612006 ? 200 ? 3/17/2006 ? 800 ? 3/18/2006 ? 1,400 ? 312312006 ? 100 ? 2nd qtr 06 4/9/2006 ? 5,200 ?

5/15/2006 ? 840 ? 3rd qtr 06 0 4th qtr 06 10/28/2006 ? 280 ?

11/13/2006 ? 40 ? 11129/2006 ? ' 40 ? 12120/2006 ? 40 ? 1 st qtr 07 2/28/2007 ? 200 ?

3/1/2007 ? 160 ? 312/2007 ? 860 ? 3/512007 ? 40 ? 3/612007 ? 640 ? 3/712007 ? 240 ? 3/2412007 ? 1,400 ? 3/26/2007 ? 1,400 ? 3127/2007 ? 5,180 ? 3/2812007 ? 21,500 ? 2nd qtr 07 417/2007 ? . 40 ?

5/2/2007 ? 10,800 ? 5/4/2007 ? 40,800 ? 5/7/2007 ? 31,400 ? 5122/2007 ? 6,040 ? 5/25/2007 ? 6,000 ? 6/22/2007 ? 4,000 ? xxon Mobil Date Duration LBS S02 Reason1 st qtr 05 3/8/2005 3 hrs 232 Hydrocracker startup 3/8/2005 3 hrs 188 Hydrocracker startup 2nd qtr 05 4/11/2005 3 hrs 651 T305 shutdow

4/11/2005 3 hrs 301 T305 shutdow 4/11/2005 3 hrs 183 T305 shutdow 5/17/2005 3 hrs 235 Hydrocracker startup 5/17/2005 3 hrs 295 Hydrocracker startup 5/18/2005 3 hrs 300 Hydrocracker startup 5/18/2005 3 hrs 371 Hydrocracker startup 5/18/2005 3 hrs 485 Hydrocracker startup 5/18/2005 3 hrs 491 Hydrocracker startup 5/18/2005 3 hrs 458 Hydrocracker startup 5/18/2005 3 hrs 491 Hydrocracker startup 5/19/2005 3 hrs 505 Hydrocracker startup, 5/19/2005 3 hrs 518 Hydrocracker startup 5/19/2005 3 hrs 567 Hydrocracker startup 5/19/2005 3 hrs 573 Hydrocracker startup 5/19/2005 3 hrs 526 Hydrocracker startup 5/19/2005 3 hrs 627 Hydrocracker startup 5/19/2005 3 hrs 602 Hydrocracker startup 5/19/2005 3 hrs 589 Hydrocracker startup 5/20/2005 3 hrs 606 Hydrocracker startup 5/20/2005 3 hrs 643 Hydrocracker startup 5/20/2005 3 hrs 684 Hydrocracker startup 5/20/2005 3 hrs 615 Hydrocracker startup 5/20/2005 3 hrs 538 Hydrocracker startup 3rd qtr 05 7/8/2005 3 hrs 312 HCBL Shutdown

7/8/2005 3 hrs 446 HCBL Shutdown 7/8/2005 3 hrs 272 HCBL Shutdown 7/15/2005 3 hrs 320 HCBL Startup 7/15/2005 3 hrs 837 HCBL Startup 4th qtr 05 12/27/2005 3 hrs 5,086 FCC startup

12/27/2005 3 hrs 5,294 FCC startup 12/28/2005 3 hrs 376 Blocked drain valve leaked to flare 12/28/2005 3 hrs 441 Blocked drain valve leaked to flare 12/28/2005 3 hrs 441 Blocked drain valve leaked to flare 12/28/2005 3 hrs 443 Blocked drain valve leaked to flare 12/28/2005 3 hrs 442 Blocked drain valve leaked to flare 12/29/2005 3 hrs 444 Blocked drain valve leaked to flare 12/29/2005 3 hrs 437 Blocked drain valve leaked to flare 12/29/2005 3 hrs 433 Blocked drain valve leaked to flare 12/29/2005 3 hrs 431 Blocked drain valve leaked to flare 1 st qtr 06 3/7/2006 3 hrs 195 HF3 Shutdown

3/19/2005 3 hrs 494 Crude startup 3/19/2006 3 hrs 1,925 Crude startup 3/19/2005 3 hrs 393 Crude startup 2nd qtr 06 4/5/2006 3 hrs 153 HF1 startup

4/13/2006 3 hrs 322 Coker startup ~ 4/13/2006, 3 hrs 1,697 Coker startup4113/2006 3 hrs 2,101 Coker startup 6/2/2006 3 hrs 392 FCC and ULEB Upset 3rd qtr 06 712912006 3 hrs 692 7-=and SV-623 lifted to flare during process upset 8I31/2006 3 hrs' 1,885 C-310 due to pump loss on T-301 8131/2006 3 hrs 2,884 C-310 due to pump loss on T-301 9/21/2006

. 3 hrs 191 C-312 due to T-4 Flooding 4th qtr 06 101412006 3 hrs 249 Crude upset

1019/2006 3 hrs 177 CHUB startup 10/1012006 3 hrs 413 CHUB startup 10/1012006 3 hrs 400 CHUB startup 10/1012006 3 hrs 156 CHUB startup 1012212006 3 hrs 160 FCC startup 10/22/2006 3 hrs 160 FCC startup 1012212006 3 hrs 160 FCC startup 1012212006 . 3 hrs 771 FCC startup 10I22/2006 3 hrs 5,888 FCC startup 10122/2006 3 hrs 202 FCC startup 10/2212006 3 hrs 159 FCC startup 10126/2006 3 hrs 325 ULEB shutdown 10/26/2006 3 hrs 407 ULEB shutdown 10126/2006 3 hrs 270 ULEB shutdown 1013012006 3 hrs 264 SLEB shutdown 1013012006 3 hrs 158 SLEB shutdown 1 st qtr 07 111712007 3 hrs 484 V-201 upset

113012007 3 hrs 1,835 C-311 malfunction 113012007 3 hrs 266 C-311 malfunction 314/2007 3 hrs 3,310 V-201 malfunction 314/2007 3 hrs 279 V-201 malfunction 3118/2007 3 hrs 1,201 T-201/T-203 malfunction 2nd qtr 07 511112007 3 hrs 480 C-311 vibration malfunction CHS Inc. Date Duration LBS S02 Reason s qr 05 0 

# 2ndqtr05 7

412212005 2 hrs 335 aware valve to flare open during SR= shutdown - 4122 to 14/23/05 1/2 hr &

45 min 354 Not aware valve to flare open during SRO

shutdown 6/712005 12 min 1,595 Zone D SRU tripped due to power loss 3rd qtr 05 71712005 23 min 700 SRU tripped

-- 8/7/2005 3.75 hrs 6,200 Ultra Low 5ulfur Diesel Unit (ULSU) firsttime startup 4th qtr 05 10/612005 5 min 396 Unexpected shutdown of Zone A SRU

10123/2005 2.5 hrs 60 Zone D SRU TN TF---- 10/30 60 hrs 14,940 Zone D SRU shutdown 1111312005 14 hrs 864 Zone D SRU startup 11114/2005 12 min 200 ULSD startup 11129/2005 15 min 482 ULSD compressor shutdown unexpectedly11/30/2005 18 min 579 ULSD compressor shutdown unexpectedly

1st qtr 06 1/27/2006 22 min 1,171 Faulty lowlevel reading in waste neat boiier shut down Zone D SRU 2/17/2006 25 min 249 ULSD hydrogen shutdown 2nd qtr 06 4/7/2006 9 min 190 FCC wet gas comressor tripped

5/19/2006 ? 21,400 ? 6/7/2006 30 min 479 Zone u ULSU Unit c;-902A compressor tripped . 3rd qtr 06 0 4th qtr 06 11/25/2006 2 hrs 4,160 Zone B Low pressure vapor recovery compressor failed 1 st qtr 07 0 2nd qtr 07 5/16/2007 10 hrs 3,500 rower dip - while changing feed to Substation 2 6/13/2007 1 hr 1,940 Acid gas flaring - due to fire in #2 SRU boiler ~ 6/22/2007 51 min 1,200 Steam control valve failure for MDEA09/10/07 MON 10 :50 FAX 406 247 4456 MT FCSS



## PERMITTING & COMPLIANCE DIVISION AIR RESOURCES MANAGEMENT BUREAU

Billings Regional Offi ce Phone: 406-247-4445 Airport Business Park IP-9 1371 Rimtop Drive Fax 406-247-4456 Billings, MT. 59105-1978



# FAX COVER SHEET

DATE : ~ - /d ° 2CO-1 

## TO : LAvtP-tF- C)ZrRA

wf~ - ots P- PA f2--9 5a3- -,3/2-44, 1 -7



## FROM : FAX NO

. ~~~ ~ 3/Z-6fiog 

# N PAGES : 11 (including this one)
. Comments : zCOG e zo6"J QTfz.C.~ 1=l,ft/1.~ R-jq-r' :69 TS Z00109/10/07 MON 10 :51 FAX 406 247 4456 MT FCSS a 002



### Table 16 

# Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary Second Quarter 2007 Hours Emissions Emission Date MST Ibs S02 Point Cause Corrective Action 

### Reportable Events Startup/Shutdown/Malfunctions Emissions Exceed 150 Pounds per 3-hour Period

Trackable Events ' Startup/Shutdown/Malfunctions Emis sions Between 50 and 150 Pounds per 3-hour Period 617/2007 20

:12 155 100-m Utility power failure Prompt start of flare caused shutdown of emergency generator .

process air blower motors Utility power was restored and the activation of a before the transfer could 

### b urner safety device on be mad e to qenerator - down the fuel supply to motors and incinerator the incinerator . fuel supply were quickly restored: AQP 2611-0311 .A.1409/10/07 MON 10 :52 FAX 406 247 4456 MT FCSS


# 4.0 FLARE E MISSIONS Section II .A.14 of Air Quality Permit 2611-03 and Exhibit A-1 of the Stipulation of June 1998 provide for tracking flare emissions in excess of the de minimis activity level of 50 pounds per three-hour period . Section 1 .13 of OP2611-03 and both the August 1996 and the June 1998 Stipulations provide exceptions for flare emissions in excess of 150 pounds per three-hour period associated with startups, shutdowns, and malfunctions (events beyond the control of the source)
. In accordance with ARM 17 .8.110, emissions due to startups/shutdowns and malfunctions must be reported to MDEQin a timely fashion. These excepted emissions result fromthe bypassing of the sulfur recovery unit (SRU) acid gas feed to the flares . In accordance with the Stipulation, the reported and tracked data do not include de minimis flaring activities (that is, those that result in emissions fromthe flare of less than 50 pounds per three-hour period)
. Table 16 shows that during the first quarter there were no reportable and no trackable flaring events logged . A de minimis flaring event occurred on March 6, 2007, when a malfunction affecting the sulfur recovery unit (SRU) occurred resulting in four very brief periods of flaring between approximately 1 :02 and 1 :20 am MST. Tests showed that feed gases to the SRU contained excessive hydrocarbons or other insoluble content in the incoming acid gas. No cause for the upset could be determined by the refinery. Acid gases were flared at the 100-meter flare emitting approximately 39 pounds of S02. Table 16 

# Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary First Quarter 2007
_ Emissions Emission Date Hours (Ibs S02) Point Cause Corrective Action

MST 

### Reportable Events

Startup/Shutdown/Malfunctions Emissions Exceed 150 Pounds per 3-hour Period

Trackable Events Startup/Shutdown/Malfunctions Emissions Between 50 and 150 Pounds per 3-hour Period

AQP 2611-0311 .A.14 

### 4609/10/07 MON 10 :54 FAX 406 247 4456 MT FCSS



### Table 16 

# Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary Fourth Quarter 2006 Emission Emission Date Hours s Point

(MST) (Ibs SO?)

Short sulfur recovery plant shutdown and restart to perform necessary repairs 

### Cause 

### Reportable Events Startup/Shutdown/Malfunctions Emissions Exceed 150 Pounds per 3-hour Period 10/1612006 1 9-11 1 8,322 1 100-mflare 10/1612006 1 12-14 1 5,7220

10/29/2006 

### Corrective Action

Scheduling so that the shutdown occurred at a time of exceptionally low refinery production of acid gases ; cooperating with the refinery so that their backup fuel gas scrubbing unit was in operation; multiple work crews and extra operating crew to minimize emissions, flaring time, and the potentiai for extended downtime
. 

### Trackable Events Startup/Shutdown/Malfunctions Emissions Between 50 and 150 Pounds per 3-hour Period 21-23 350 100-mflare

AQP 2611-0311,A .14 Excessive hydrocarbons in the feed gases which likely created a large and varying air demand in the SRU; and, simultaneously, a malfunctioning "Ratio" analyzer that controls the process air flow

to the SuperClaus . The malfunctioning Ratio analyzer likely adjusted process air flow incorrectly during varying air demand. Troubleshooting the process air supply identified the partially plugged Ratio analyzer, trying to determine and correct what may have allowed the sample fine to plug. Removing the unidentified hard deposit found in the sample line allowed the analyzer to resume proper operation . The SuperClaus catalytic bed temperature was reduced to its normal operating range and the unit was restarted . Discussions with the refinery to try to identify the cause of the analyzer sample line plugqinq.09/10/07 MON 10 :55 FAX 406 247 4456 MT FCSS Z005



### r

i 

# 4.0 FLARE EMISSIONS

Section II .A.14 of Air Quality Permit 2611-03 and Exhibit A-1 of the Stipulation of June 1998 provide for tracking flare emissions in excess of the de minimis activity level of 50 pounds per three-hour period. Section 1 .13 of OP2611-03 and both the August 1996 and the June 1998 Stipulations provide exceptions for flare emissions in excess of 150 pounds per three-hour period associated with startups, shutdowns, and malfunctions (events beyond the control of the source) . In accordance with ARM 17.8.110, emissions due to startups/shutdowns and malfunctions must be reported to MDEQin a timely fashion . These excepted emissions result fromthe bypassing of the sulfur recovery unit (SRU) acid gas feed to the flares . In accordance with the Stipulation, the reported and tracked data do not include de minimis flaring activities (that is, those that result in ernissions from the flare of less than 50 pounds per three-hour period)
. Table 16 shows that during the third. quarter there was one reportable and no trackable flaring events logged. Table 16 

### Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary Third Quarter 2006 Emissions Emission Date Hours Ibs SOZ Point Cause Corrective Action Reportable Events Startup/Shutdown/Malfunctions _Ernigs+ ns Exceed 150 Pounds per 3-hour Period 9/1612006 9-11 " 7,413 100-meter Sudden & unexpected utility Corrective actions taken

12-'14 3,199 flare electric power failure & included, as appropriate: ensuing malfunctions within communications with / the facility including blown ExconMobil operations, fuse, electrical fire, short emergency startup of refinery circuit &tripped breaker. The backup unit, calling out plant emergency generator additional MSCC staff, started automati Ily, but the troubleshooting of the power tripped breake prevented the loss, reroutjpg power, use of emergency power from emergency power system, reaching critical plant calling out utility assistance, equipment. The lack of both calling in contractor for emergency power & utility emergency repairs to the power to the auxiliary steam power system, limited flaring boiler &the boiler feed water only as necessary, repair of pumps ultimately required that damaged systems, and the sulfur recovery boiler be communications with shut down thus necessitating ExxonMobil management the flaring of the acid gas that and NorthWestern Energy had entered the facility before utility management to ExxonMobil could reduce feed discuss how to best

_

. rate and start up their backup prevent/manage any unit. recurrence. Trackabie Events Startup/Shutdown/Malfunctions Emissions Between 50 and 150 Pounds per 3-hour Period
---- NIA 0 0 NIA N/A N/A I AQP 2611-0311 .A.14 

### 4709~10/07 MON 10 :57 FAX 406 247 4456 . MT FCSS Z006



## 4.0 FLARE EMISSIONS Section II .A.14 of Air Quality Permit 2611-03 and Exhibit A-1 of the Stipulation of June 1998 provide for tracking-flare ernissions in excess-of-the-de pounds per three-hour period. Section 1 .13 of OP2611-03.and both the August 1996 and the June 1998 Stipulations provide exceptions for flare emissions in excess of 150 pounds per three-hour period associated with startups, shutdowns, and malfunctions (events beyond the control of the source)
. In accordance with ARM17.8.110, emissions due to startups/shutdowns and malfunctions must be reported to MDEQ in a timely fashion . These excepted emissions result fromthe bypassing of the sulfur recovery unit (SRU) acid gas feed to the flares . In accordance with the Stipulation, the reported and tracked data do not include de minimis flaring activities (that is, those that result in emissions from the flare of less than 50 pounds per three-hour period)
. Table 16 shows that during the second quarter there were no reportable and no trackabie flaring events logged . Table 16



# Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary Second Quarter 2006 , Emissions

. Emission Date Hours Ibs SW Point ~ Cause Corrective Action 

### Reportable Events Startup/Shutdown/Malfunctions Emissions Exceed 150 Pounds per 3-hour Period NIA 0 0 NIA N/A NIA 

### Trackabie Events Startup/Shutdown/Malfunctions Emissions Between 50 and 150 Pounds per 3-hour Period NIA 0 0 N/A N/A NIA AQP 2611-03![ .A .14



### 4709/10/07 MON 1 .0 :58 FAX 406 247 4456 MT FCSS 

### CM007



## 4.0 FLARE EMISSIONS Section II .A.14 of Air Quality Permit 2611-03 and Exhibit A-1 of the Stipulation of June 1998 provide for tracking flare emissions in excess of the de minimis activity level of 50 pounds per three-hour period . Section 1 .13 of OP2611-03 and both the August 1996 and the June 1998 Stipulations provide exceptions for flare emissions in excess of 150 pounds per three-hour period associated with startups, shutdowns, and malfunctions (events beyond the control of the source)
. In accordance with ARM17.8 .110, emissions due to startups/shutdowns and malfunctions must be reported to MDEQ in a timely fashion. These excepted emissions result from the bypassing of the sulfur recovery unit (SRU) acid gas feed to the flares . In accordance with the Stipulation, the reported and tracked data do not include de minimis flaring activities (that is, those that result in emissions fromthe flare of less than 50 pounds per three-hour period)
. Table 16 shows that during the first quarter there were no reportable and no trackable flaring events logged .
Table 16 

# Montana Sulphur & Chemical Company CEMS .

Flaring Emissions Summary First Quarter 2005 Emissions Emission Date Hours Ibs SO2 Point Cause Corrective Action 

### Reportable Events Startup/Shutdown/Malfunctions Emissions Exceed 150 Pounds per 3-hour Period NIA 0 0 N/A NIA NIA 

### Trackable Events Startup/Shutdown/Malfunctions Emissions Between 50 and 150 Pounds per 3-hour Period NIA 0 0 NIA NIA NIA AQP 2611-0311 .A.1409/10/07 MON 10 :59 FAX 406 247 4456 MT FCSS U008



### Table 16 

# Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary Fourth Quarter 2005 Emissions Emission Date Hours !bs SOZ Point Cause L Corrective Action 

### Reportable Events Startup/Shutdown/Malfunctions Emissions Exceed 150 Pounds p er 3-hour Period 101512005 0-2 11,645 100-m flare Simultaneous Corrective actions taken included power failure of notifying the refinery before, 101512005 3-5 12,421 100-m flare grid power and during, and after the flaring emergency event . Both a vendor technician backup generator . and a vendor specialist were The flared refinery called in to troubleshoot the acid gas stream backup generator . Additional was estimated to MSCC personnel were called in contain to assist with an orderly restart, approximately clearing of frozen lines, and 98 .1% H2S . restoration of operations . Flaring



### was used as a last resort to protect the process equipment and control opaci ty emissions . 10/1312005 12-14 1,309 100-mflare Emergency The maintenance was scheduled backup generator during a time of lowrefinery feed 10/1312005 15-17 2,365 100-mflare failure during gas flows . The emergency planned electrical generator was tested maintenance by satisfactorily prior to cutting grid local transmission power to the facility. Corrective 

### utility. The flared actions included notifying the mixed refinery and refinery before, during, and after amine unit acid the flaring event . Additional 

### gas stream was MSCC personnel were called in estimated to to assist . Avendor specialist was contain called in to troubleshoot the approximately backup generator . Cooling 88.1 % HZS . system and auto-start

adjustments have been made to the emergency generator to reduce the likelihood of a similar systemfailure. Flaring at the 100-meter flare was used as a last resort to protect the process 

### equipment, to control opacity emissions, and to minimize ambient im

pact . AQP 2611-0311 .A

.1409/10/07 MON 11 :01 FAX 406 247 4456



### Date

8/1512005 8115/2005



# 9/1912005

9/2112005 MT FCSS



### Table 16 

# Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary Third Quarter 2005 Hours

12-14 15-17 18-20 Emissions Emission

(Ibs SOZ~ Point Cause Corrective Action



### Reportable Events Startup/Shutdown/Malfunctions Emissions Exceed 150 Pounds per 3-hour Period 1,680 9,519 59



### Trackable Events Startup/Shutdown/Malfunctions Emissions Between 50 and 150 Pounds per 3-hour Period 15-17

0-2 110

106 100-m

flare

t3=r -- I "i u 11 flare

100-m flare Excessive liquids in

the feed gas supplied by refinery which overfilled the liquid knockout vessel and led to malfunctions in downstream equipment .

t~~W S .b w~ . . . hydrocarbons and highly variable flow rates led to brief period of inadequate process air at the SRU .

Excessive hydrocarbons and highly variable flow rates led to brief period of inadequate process air at the SRU. 

### 9009

Corrective actions taken included notifying the refinery, returning some liquids to the refinery, and adding air to the SRU to the extent practical . Flaring was used as a last resort to protect the process equipment and to control opacity emissions.

Ca~cti~~a~ ro~tstaken included adding air to the SRU to the extent practical and a brief period of flaring to prevent damage to the SRU equipment and to control opacity while the process was brought into control . Corrective actions taken included adding air to the SRU to the extent practical and a brief period of flaring to prevent damage to the SRU equipment and to control opacity while the process was brought into control . 

### 4909/10/07 MON 11 :02 FAX 406 247 4456 MT FCSS 10010

V 

### Date

412112005

612012005

6/14/2005 

### Table 16 

# Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary Second Quarter 2005 Hours Emissions

((bs S02} Emission

Point Cause Corrective Action

15-17

15-17 

### Reportable Events

Startup/Shutdown/Malfunctions Emissions Exceed 150 Pounds per 3-hour Period 522

816



### Trackable Events Startup/Shutdown/Malfunctions Emissions Between 50 and 150 Pounds per 3-hour Period 12-14 115 100-m flare

100-m flare

100-m flare Sudden and

unexpected changes in feed gas supplied by refinery. These gases contained an exceptionally high concentration of hydrocarbons which caused an inadequate process air situation in the SRU . Power malfunction within MSCC necessitated a wiring bypass that caused the SuperCIausTM

to shut down, which in turn caused an inadequate. process air situation at the SRU .

Power malfunction within MSCC caused SuperClaus''"' to shut down while running at a high rate, which caused a shortage of process air to the remainder of the sulfur recovery train. Corrective actions taken included, as appropriate: adding air to the SRU to the extent practical, manual flow restrictions, requests to the refinery to normalize the feed stream . Corrective actions ' taken included adding air to the SRU to the extent practicable.

Corrective actions taken included adding air to the SRU to the extent practical .09/10/07 MON 11 :03 FAX 406 247 4456 MT FCSS

CL 

## 4

.0 FLARE EMISSIONS U011

Exhibit A-'1 of the Stipulation of June 1998 provides for tracking flare emissions in excess of the de minimis activity level of 50 pounds per three-hour period . Section 1 .13 of OP2fi11-02 and both the August 1996 and the June 1998 Stipulations provide exceptions for flare emissions in excess of 150 pounds per three-hour period associated with startups, shutdowns, and malfunctions (events beyond the control of the source)
. In accordance with ARM17.8 .110, emissions due to startups/shutdowns and malfunctions must be reported to MDEQ in a timely fashion. These excepted emissions result from the bypassing of the sulfur recovery unit (SRU) acid gas feed to the flares . In accordance with the Stipulation, the reported and tracked data do not include de minimis flaring activities (that is, those that result in emissions fromthe flare of less than 50 pounds per three-hour period)
. Table 16 shows that during the first quarter there were no reportable and no trackable flaring events logged . Table 16 

# Montana Sulphur & Chemical Company CEMS

Flaring Emissions Summary First Quarter 2005 Emissions Emission Date Hours Ibs SOZ Point Cause Corrective Action There were no reportable or trackable even ts fogged .

U

a 7



### 45

## BEP. 12,-20071 1 :37PM DEQ/PCD/AWMB 

# STATE OF MONTANA DEPARTNENT OF ENVIRONMENTAL QUALITY PERMiTT1NG ANDCOMPLIANCE DMSION AIR RESOURCES MANAGEMENT BUREAU

Box 200901 Helena, NIT 59620 Phone (406) 444-3490 Fax # (406) 444-1499 

# DATE: /a s'~~- a47) 7

Total Number of Pages, itcluding cover sheet . TO : 

# 5 03.3) 3/a - 1~g37 ~l' ~~ ~l'~~+r~-z

. ie~~ F
FAX NO . : -36 3 - 3~-- ~ `NI~ . FROM :


# OxG#: 57-17-*

COMMENTS : 

## N0 . 493 P. 1

G :lamzb\supportlforms\administtativel'fsxsheetdoe

## SEP .12 .2007 1 :3$PM DEQ/PCD/AWMB

,

CONOCOPHI111PS 91LWNGS REFINERY SULFUR DIOXIDE EMISSIONS R>rPORI'

FOR MONTANAAIR OUAC

.IY'Y BUREAU Jan-05 

## N0.493 P. 2

_---_

.---------TONS of 502-- .-------'-'--- Sulfur in Fuel t-i2S ppM Boiler Date Fuel G HouSe Fum 5 , FCC r_e Total LbA!Mbtu(l) Jan 1 11 .67 1 .09 0 .01 0

.04 Jan 2 11 .67 1 .13 0 .01 0

.04 Jan 3 11 .19 1 .15 0 .01 0

.03 Jan 4 11 .62 1 .15 0 .01 0

.05 Jan 5 11 .41 1 .19 0 .01 0-04 Jan 6 11 .94 1 .18 0 .01 0

.04 Jan 7 13.36 1 .23 0 .01 0

.05 Jan 8 13.27 1 .33 0 .01 0

.04 Jan g 10

.89 2 .12 0 .01 0

.06 Jan 10 11 .33 0 .94 0

.01 0

.01 Jan 11 12.69 1 .02 0 .01 0

.05 Jan 12 13.67 1 .04 0 .01 0

.04 Jan 13 12.26 1 .03 0 .01 0

.04 Jan 14 12.19 1 .02 0 .01 0-04 Jan 15 11 -92 1 .03 0 .01 0

.04 Jan 16 11 .93 1 .01 0 .01 0

.04 Jan 17 11 .66 1 .02 0 .01 0

.04 Jan 18 11 .39 0 .98 0

.01 0

.04 Jan 19 11 .79 0 .97 0-01 0-05 Jan 20 11 .55 0 .66 0

.01 0-05 Jan 21 11 .25 0 .92 0

.01 0

.05 Jan 22 'S 1 .26 0 .92 0

.01 0

.06 Jan 23 11 .03 0 .87 0

.01 0

.06 Jan 24 9

.66 0

.95 0

.01 0

.05 Jan 25 10.79 0 .82 0

.01 0

.05 Jan 26 11 .01 0 .85 0

.61 0

.05 Jan 27 11 .44 0 .80 0

.01 0

.08 Jan 28 11,48 0 .73 0

.01 0

.06 Jan 29 11 .25 0 .60 0

.01 0

.05 Jan 30 11 .60 0_82 0 .01 0

.05 Jan 31 11 .18 0 .98 0

.01 0

.06 0

.00 1 .14 0.06 0 .00 1 .18 0 .06 0 .00 1 .19 0 .06 0 .00 1 .21 0 .06 0 .00 1 .24 0 .07 0_00 1 .23 0 .07 0 .60 1 .89 0 .08 0 .00 1 .3$ 0 .08 0 .00 1 .19 0_07 0 .00 0

.96 0

.05 

## 0 .00 1 .08 0.06 0 .00 1 .09 0 .06 0 .00 1 .08 0 .06 

## 0 .00 1-07 0

.05 0 .00 1 .08 0 .06 0 .00 1-06 0_06 

### 0.00 1 .07 0.05 

## 0 .10 1 .13 0

.05 0,00 1 .03 0 .05 0.00 0

.92 0.05 0 .00 0

.95 0

.05 0_00 0

.99 0

.05 0 .00 0

.94 0

.05 0 .00 1 .01 0.05 0 .00 0

.88 0

.05 0,00 0

.91 0

.05 0,00 0.89 0 .05 

## oe 0

.80 0

.04 0.00 0.86 0.05 0 .00 0

.88 0

.05 0 .00 1,05 0 .05 Total 30.94 0 .35 1 .45 0 .70 33

.44 Total (2005 year-to-c(ate) 30-94 0 .35 1 .45 0 .70 53

.4't Notes: 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP,12.2007 1 ;3$PM DEQ/PCD/AWMB

. 1 \

CONOCOPHII .LIPS BILUNGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Feb-05 , e5 . 

## NQ, 493 P, 3

-- - ~. ._

._. .---TONS of S02--
----------- .---_.-~--- _H_2S PPM B iler $uffirr in Fuel Pi u - Fuel Cas House Furnaces EC-C-) Flan Total LbIMMbtu(1) Feb 1 11 .15 0 .96 ' 0

.01 0

.08 0

.00 1 .05 0 .05 Feb 2 11 .11 0 .90 0

.01 0

.09 0

.00 1 .00 0 .05 Feb 3 71 .40 0 .91 0,01 0 .10 0

.00 1 .02 0 .05 Feb 4 11 .44 0 .98 0

.01 0

.09 0

.00 1 .08 0 .06 Feb 5 , 12_34 1 .09' 0,01 0 .07 0

.00 1 .17 0 .06 Feb 6 12.40 . 1 .15 0 .01 0

.08 0

.00 1 .24 0 .06 Feb 7 11 .15 1 .01 0 .01 0

.07 0_00 1,09 ,0 .05 Feb 8 11 .07 W73 0 .01 0

.0$ 0

.00 0

.79 0_04 Feb 9 11 .13 0 .94 0

.01 0

.05 0

.00 1 .00 0_05 Feb 10 11 .03 0 .60 0

.01 0

.06 0

.00 0

.67 0_03 Feb 11 10.96 0 .62 0,01 0 .05 0

.00 0

.88 0

.03 Feb 12 10.66 0 .68 0_01 0 .03 0

.00 0

.72 0

.04 Feb 13 10-96 0 .69 0

.01 0

.03 0

.00 0

.73 0_04 Feb 14 10.72 0 .70 0

.01 0

.03 0

.00 0

.74 0

.04 Feb 15 10

.66 0.72 0 .01 0

.03 0

.00 0

.76 0

.04 Feb 16 11 .10 0,70 0 .01 0.03 0,00 0 .74 0

.04 Feb 17 f1 .10 0 .67 0

.07 0

.04 0

.00 0

.72 0

.04 Feb 18 10.94 0 .67 0

.01 0

.04 0

.00 0

.72 0

.04 Feb 19 11 .01 0 .70 0

.01 0

.04 0

.00 0

.75 . 0

.04 Feb 20 1 1 .46 0 .66 0

.01 0

.04 0,00 0 .71 0

.04 Feb 21 10.96 0 .70 0

.01 0

.04 0

.00 0

.75 0

.04 Feb 22 9.75 0 .29 0

.01 0

.03 0,00 0 .33 0

.02 Feb 23 10.58 0 .99 0

.01 0

.15 0

.00 1 .15 0 .06 Feb 24 66.27 1 .10 0 .05 0

.14 0,00 1 .29 0 .07 Feb 25 11 .38 1 .22 0 .01 0

.13 0

.00 1 .36 0 .07 Feb 26 12

.14 1 .28 0 .01' .0.11 0 .00 1 .40 0 .07 Feb 27 11 .80 1 .37 0 .01 0

.10 0

.00 1 .48 0_08 Feb 28 12.46 1 .29 0 .01 0

.10 0

.00 1,40 0_07
Monthly Total 24 .31 0

.37 1 .88 0 .00 26.56 Total (year-to-cSate) 65.25 0 .72 3.33 0 .70 60.00 Notes : 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP. 12, 2007 1 ; 38PM DEQ/PCD/AWMB

CONOCOPHILLIPS BILIJNGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIRQUALITY BUREAU

Mar-05 

## N0 . 493 P. 4

_ ._._~._. . .-----TONS of S02 H28 PP_M Boiler Sulfur in Fuel Dat e Fuel Gas ho-use ~ F maces FCC Flare Tatat LbIMM Mar 1 11 .49 1 .29 0 .01 0

.00 0

.00 1 .3a 0.07 Mar 2 1 1 .54 1 .30 0 .01 0

.08 0

.00 1 .39 0 .07 Mar 3 11 .84 1 .27 0 .01 0

.08 0

.00 1 .36 0 .07 Mar 4 11 .77 1 .19 0 .01 0

.10 0

.00 1 .30 0 .07 Mar 5 11 .83 1 .07 0 .01 0

.09 0

.00 1 .17 0 .07 Mar 6 11 .91 1 .15 0 .01 0

.07 0

.00 1 .23 0 .07 Mar 7 11 .94 1,11 0 .01 0

.06 0

.00 1 .18 0 .06 Mar 8 'I 1 .63 0 .91 0

.01 0

.05 0

.00 0

.97 0

.05 Mar ,9 11 .55 0 .96 0

.01 0

.05 0

.00 1 .02 0 .06 Mar 10 11 .13 1 .02 0 .01 0

.04 0

.00 1-07 0 .06 Mar 11 10.97 1 .14 0-01 0 .02 5

.14 6

.31 0

.06 Mar 12 11 .20 1 .18 0 .01 0

.01 0

.00 1 .20 0 .07 Mar 13 10

.85 1 .26 0 .01 0

.01 0

.00 1 .28 0 .07 Mar 14 10.37 1 .09 0 .01 0

.00 0

.00 1 .10 0 .06 Mar 15 10

.26 0

.94 0

.01 0

.01 0

.00 0

.96 0

.05 Mar 1e 10

.48 0

.85 0

.01 0

.01 0

.00 0

.87 0

.05 Mar 17 10

.02 1 .15 0 .01 0

.02 0

.00 1 .18 0 .08 Mar 18 9

.17 -1 .32 0 .01 0

.02 0

.00 1 .35 0 .09 Mar 19 8.47 1 .07 0 .00 0

.01 0

.00 1 .08 0 .08 Mar 20 8.47 1 .18 0 .00 0

.01 0

.00 1 .19 0 .10 Mar 21 8.75 0 .84 0

.00 0

.04 0

.00 0

.88 0

.07 Mar 22 8

.96 0

.64 0

.00 0

.00 0

.00 0

.64 0

.07 Mar 23 9

.69 0

.76 0

.00 0

.01 0

.00 0

.77 0

.10 Mar 24 9

.87 0

.70 0

.00 0

.01 0

.00 0

.71 0

.10 Mar 25 9.76 0 .70 0

.00 0

.01 0

.00 0

.71 0

.10 Mar 26 9

.92 0

.62 0

.00 0

.01 0

.00 0

.63 0

.09 Mar 27 9

.67 0

.21 0

.00 0

.01 0

.00 0

.22 0

.04 Mar 28 8

.25 0

.00 0

.00 0

.02 0

.00 0

.02 0

.00 Mar29 7

.69 0

.00 0

.00 0

.03 0

.00 0

.03 0

.00 Mar30 7.78 0 .00 0

.00 0

.02 0

.00~ 0

.02 0,00 Mar 31 7

.68 0

.00 0

.00 0

.03 0

.00 0

.03 0

.00 Total ' 26.91 0 .22 1 .01 5.14 33.28 Total (year-to-date) 82.76 0 .94 4

.34 5.84 93 .28 Notes: 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP .12 .2007 1 :39PM DEQ/PCD/RWMB

CONOCOPHILLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR , MONTANA AIR QUALITY BUREAU

Apr-05 

## N0 . 493 P. 5

. ._____. . . . . .--- . ._.__. . ., .TC7NS Of 802-------r-------~-----"- H2S PPM Boiler Sulfur in Fuel Date Fuel Gas House Fistna s FCC Flare Total Lb1MMbtu(1) Apr 1 7

.81 0

.00 0

.00 0

.03 - 0

.00 0

.03 0

.00 Apr 2 8.92 0 .00 0

.00 0

.04 0

.00 0

.04 0

.00 Apr 3 10.60 0 .00 0

.00 0

.04 0

.00 0~04 0 .00 Apr 4 8.89 0 .00 0

.00 0

.03 0

.00 0

.03 0

.00 Apr 5 8.52 0 .00 0

.00 0

.02 0

.00 0

.02 0

.00 Apr 6 8

.21 0

.00 0

.00 0

.02 0,00 0 .02 0

.00 Apr 7 , 8

.46 0

.00 0

.00 0

.02 0

.00 0

.02 0

.00 Apr 8 8

.32 0

.00 0

.00 0

.01 0

.00 0

.01 0

.00 Apr 9 8

.48 0

.87 0

.00 0

.01 0

.00 0

.68 0

.07 Apr 70 8.88 0 .74 0

.00 0

.01 0

.00 0

.75 0

.08 Apr 11 12.90 0 .74 0

.01 0

.01 0

.00 0

.76 0

.08 Apr 12 14.45 0 .54 0

.01 0

.01 0

.00 0

.56 0

.05 Apf 13 12.16 0 .25 0

.01 0

.01 0

.00 0

.27 0

.02 Apr 14 11 .28 0 .18 0

.01 0

.01 0

.00 0

.20 0

.02 Apr 15 1 2

.67 O

.47 0

.01 0

.01 0

.00 0

.49 0

.03 Apr 16 12

.21 0

.48 0

.01 0

.02 0

.00 0

.51 0

.03 Apr,17 12.44 0 .52 0

.01 0

.00 0

.00 . 0

.53 0

.03 Apr 18 . 12.37 0 .55 0_01 0 .01 0

.00 0

.57 0

.03 Apr 19 13.48 0 .58 0

.01 0

.02 0

.07 0

.68 0

.03 Apr 20. 13.48 0 .54 0

.01 0

.02 0

.00 0

.57 0

.03 Apr 21 . 11 .84 i] .46 0 .01 0

.04 0

.00 0

.51 0

.03 Ap7 22 12

.02
. 0

.46 0

.01 0

.04 0

.00 0

.51 0

.03 Apr 23 1 3

.33 0

.46 0

.01 0

.04 0

.00 0

.51 0

.03 Apr 24 13.68 0 .40 0

.02 0

.06 0

.00 0-48 0 .02 Apr 25 12.85 0 .35 0

.01 0

.06 0

.00~ 0

.42 0

.02 Apr26 13.22 0 .34 0

.02 0

.06 0

.00 0

.42 0

.02 Apr 27 12

.21 0

.37 0

.01 0

.06 0

.00 0

.44 0

.02 Apr 28 12

.70 0

.37 0

.01 0

.06 0

.00 0

.44 0

.02 Apr 29 12

.35 0.34 0 .01 0

.12 0

.00 . 0

.47 0

.12 Apr 30 14.41 0 .30 0

.01 0

.19 0

.00 0

.50 0

.12 Total 10.13 0 .28 1 .08 0 .07 11 .56 Total (year-to-date) 92 .29 1 .22 5 .42 6.91 104.84 Notes : 1 . Sulfur in gas and oil fuels per MMbtu's HHV
.

## SEP,12 .2007 1 ;39PM DEQ/PCD/AWMB



## coNocoPHILUPs BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIRQUALITY BUREAU

May-05 

## N0 . 493 P. 6

~~.~._ . . . . .- . ._.-----------TONS of 802 H2,% PPM 90iter Sulfur in Fuel 0ate Fu e

l Ca Hause Furn ces f:CC Flare Total L.b/MMbtu(1} May 1 17.47 0 .00 0

.02 0

.20 May 2 11 .88 0 .00 0

.01 0

.26 May 3 12.42 0 .00 0

.01 0

.30 May 4 13.60 0 .00 0

.02 0

.43 May 5 15.05 0 .00 0

.02 0

.49 

## May 6 23.52 0 .01 0.03 0

.55 May 7 27 .69 0 .00 0

.03 0

.63 May 8 31_26 0 .01 0

.04 0

.62 May 9 23

.08 0

.00 0

.03 0

.61 May 10 21 .96 0 .00 0

.03 0

.55 May 11 22

.91 ' 0

.04 0

.03 0

.50 May 12 24~44 0 .06 0

.03 0

.51 May 13 23.1 1 0 .06 0

.03 0

.56 May 14 25.26 0,07 0 .03 0

.56 May 15 23_05 0 .06 0

.03 0

.44 May 16 24_80 0 .07 0

.03 0

.48 May 17 25_48 0 .07 0

.06 0

.45 May 18 21 .20 0 .07 0.07 0 .47 May 19 25.40 0 .08 0

.09 0

.43 May 20 24

.29 0

.06 0

.05 0

.44 May 21 21 .48 0 .07 0

.02 0

.45 May 22 19.00 0 .13 0

.02 0

.38 May 23 19.86 0 .72 0

.02 0

.38 May 24 22.11 0 .01 0

.02 0

.41 May 25 21 .32 0 .00 0

.02 0

.48 May 26 21 .0$ , 0,00 0 .02 , 0

.53 May 27 21 .85 0 .00 0

.02 0

.56 May 28 23.71 0 .01 0

.03 0

.57 May 29 23.75 0_00 0 .03 0

.57 May 30 20.79 0 .00 0

.02 0

.63 May 31 19

.40 0

.01 0

.02 0

.57 0

.00 0

.22 ' 0

.07 0 .00 0

.27 0

.00 0 .00 0

.31 0

.00 0 .00 0

.45 0

.00 0 .00 0

.51 0

.00 

## 0 .00 0

.59 0

.00 0 .00 0

.6s 0

.00 

## 0 .00 0

.67 0

.00 0 .00 0.64 0 .00 0 .00 0

.58 0

.00 0 .00 0

.57 0

.00 

## 0 .00 0

.60 0

.01 0 .00 0

.65 0

.01 0,00 0

.66 0

.01 10 .00 0

.53 0

.01 0 .00 0

.56 0

.01 

### 0 .00 0.58 0 .01 0 .00 0

.61 ' 0,01 0 .00 0

.60 0

.01 

## 0 .00 0

.55 0

.01 0 .00 0

.54 0

.01 0 .00 0

.53 0

.01 

## 0.00 0.52 0

.01 0 .00 0

.44 0

.00 0 .00 0

.50 0

.00 0 .00 0

.55 0

.00 

## 0 .00 0

.58 0

.00 0.00 0

.61 0.00 0 .00 0

.60 0

.00 0 .00 0

.65 0

.00 

## 0 .00 0

.60 0.00 

## Total 1 .06 0 .92 15.04 0.00 17.02 Toterl (year-to-date) 93.35 2 .14 20

.46 5

.91 121 .$6 Notes: 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP,12.20p7 1 :39PM ~~DEQ/PCD/AWMB

CQNOCOPHtLLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANA AIR QUALITY SUREAU

Jun-05

-------rONS af 502--- 

## N0, 493 P. 7

H2S PPM BoilPar Sulfur in Fuel Date Fuel G_as House Furnaces FCC Flare Total LbIMMbtu(11 Jun 1 19

.65 0

.00 0

.02 0

.46 0,00 0 .48 0

.00 Jun 2 20

.50 0

.00 0

.02 0

.54 0

.00 0

.56 0

.00 Jun 3 19.14 0 .01 0,02 0 .50 0

.00 0

.53 0

.00 Jun 4 1 6

.89 0

.01 0

.02 0

.47 0

.00 0

.50 0

.00 Jun 5 16.63 0 .01 0

.02 0_45 0 .00 0

.48 0

.00 Jon 6 16_10 0 .01 0

.02 0,41 0 .00 0

.44 0

.00 Jun 7 " 17 .57 . 0 .01 0

.02 0

.44 0

.00 0

.47 0

.00 Jun & 16

.06 0

.01 0

.02 0

.41 0

.00 0

.44 0

.100 Jun!) 15

.45 0

.01 0

.02 0

.42 0

.00 0A5 0 .00 Jun 10 15

.20 0

.01 0_02 0 .48 0,00 0 .51 0

.00 Jun 11 15

.95 0,01 0 .02 0

.48 0

.00 0

.51 0

.00 Jun 12 15

.47 0

.01 0

.02 0

.46 0

.00 0

.49 0

.00 Jun 13 13

.85 0,00 0 .02 0

.58 0

.00 0_60 0 .00 Jun 14 14.02 0 .00 0

.02 0

.54 0

.00 0

.56 0

.00 Jun 15 16.70 0 .01 0

.02 0

.59 0

.00 . 0

.62 0,00 Jun 16 16.39 0,01 0 .02 0

.45 0

.00 0

.48 0

.00 Jun 17 18.79 0 .01 . 0

.02 0_46 0 .00 0

.49 0

.00 Jun 18 15,76 0 .00 0

.02 0

.35 0

.00 0

.37 0

.00 Jun 19 20.69 0 .01 0

.02 0

.28 0

.00 0

.31 0

.00 Jun 20 20

.05 0

.01 0

.02 0

.29 0

.00 0

.32 0,00 Jun 21 18,03 0 .01 0

.02 0

.29 0

.00 0

.32 0

.00 Jun 22 17.71 0 .01 0

.02 023 0.00 0,26 0.00 Jun 23 16.20 0 .01 0

.02 0

.23 0

.00 0

.26 0

.00 Jun 24 20.54 0 .01 0

.02 0

.29 0

.00 0

.32 0

.00 Jun 25 ' 13

.61 0

.00 0

.02 0

.32 0

.00 0

.34 0

.00 Jun 26 19

.10 0

.01 0

.02 0

.34 0

.00 0

.37 0

.00 Jun 27 17.37 0 .01 0

.02 0

.36 0

.00 0

.39 0

.00 Jun 28 15

.32 0,QO 0 .02 0

.28 ' 0

.00 0_30 0 .00 Jun 29 13.77 0 .00 0

.02 0

.24 0

.00 0

.26 0

.00 Jun $0 14

.19 0

.01 0

.02 025 0 .00 0

.28 0

.00 Total 0 .22 0

.61 11 .88 . 0 .00 12.71 Total (year-to-date) 93.57 2 .75 32.34 5 .91 134.57 Notes ; 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP.12.2007 1 :40PM DEQ/PCD/AWMB



## f

CONOCOPHILLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Jul-05 

## N0, 493 P, 8

- --------TONS of S02 -~- H?S PPM 9oiter Sulfur in Fuel Datc Fuel, Gas House Fumac FCC Flare Tataf LblMM~ Jul 1 13.99 0 .00 0

.02 0

.25 0

.02 0

.29 0

.00 Jul 2 14.59 0 .01 0

.02 0

.20 0

.00 0

.23 0

.00 Jul 3 13.49 0 .01 0

.01 0

.50 0

.00 0

.52 0

.00 Jul 4 14.99 0 .01 0

.02 0

.47 0

.00 0

.50 0

.00 Jul 5 15.54 0 .01 0

.02 0

.16 0

.00 0

.19 0

.00 Jul 6 12.35 0 .01 0

.01 0

.17 0

.00 0

.19 0

.00 Jul 7 12.34 0 .01 0

.01 0

.44 0

.00 0

.46 0

.00 Jul 8 11 .23 0 .01 0

.01 0

.20 0

.00 0

.22 0

.00 Jul 9 11 .59 0 .01 0

.01 0

.17 0

.00 0

.19 0

.00 Jul 10 10.56 0 .01 0

.01 0

.10 0

.00 0

.12 0

.00 Jul 11 1i .47 0 .01 0

.01 0

.10 0

.00 0

.12 0

.00 Jul 12 12

.74 0

.01 0

.02 0

.20 0

.00 0

.23 0

.00 Jul 13 12

.07 0

.01 0

.01 0

.16 0

.00 0

.18 0

.00 Jul 14 12

.32 0

.01 0

.01 0

.54 0

.00 0

.56 0

.00 Jul 15 13

.66 0

.01 0

.01 0

.59 0

.00 0

.61 0

.00 Jul 16 11 .53 0 .01 0

.01 0

.15 0

.00 0

.17 0

.00 Jul 17 11 .77 0 .01 0

.01 0

.19 0

.00 0

.21 0

.00 Jul 18 10.83
. 0 .01 0

.01 0

.19 0

.00 0

.21 0

.00 Jul 19 8

.74 0

.171 0

.01 0

.28 0

.00 0

.30 0

.00 Jul 20 10,49 0 .01 0

.01 0

.29 0

.00 0

.31 0

.00r Jul 21 13

.25 0

.01 0

.02 0

.29 0

.00 0

.32 0

.00 Jul 22 13

.23 0

.01 0

.02 0

.15 0

.00 0

.18 0

.00 Jul 23 10.54 0 .01 0

.01 0

.23 0

.00 0,25 0 .00 Jul 24 10.90 0 .01 0

.01 . 0

.14 0

.00 0

.16 0

.00 Jul 25 11 .59 0 .01 0

.01 0

.10 0

.00 0

.12 0.00 Jul 26 13

.46 ~0.01 0 .02 0

.07 0

.00 0

.10 0

.00 Jul 27 11 .43 0 .01 0

.01 0

.36 0

.00 0

.38 0

.00 Jul 26 . 22.30 0 .00 0

.03 0

.28 0

.00 0

.31 0

.00 Jul 29 13

.41 0

.00 0

.01 0

.09 ~0.00 0 .10 0

.00 Jul 30 32.51 0 .02 0

.04 0

.08 0

.00 0

.14 0

.00 Jul 31 14.44 0 .01 0

.02 0

.08 0

.00 0

.11 0

.00 Total 0 .29 0

.45 723 0 .02 7.99 Total (year-to-date) 93.86 3.20 39.57 6 .93 442.56 Notes : 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP.12.2007 1 :40PM DEQ/PCD/AWMB



## . CONOCOPHrLlupS BtLUNGs REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR ' MONTANAAIR QUALITY BUREAU

Aug-03

._______ .___-jONS of SC2----~-- 

## N0, 493 P. g

H2S PPM 13oiler Sulfur in Fuel Date Fuel Gas House Fumaces FCC Flare . Total Lb/MMbtu(11 Aug 1 20,15 0 .00 0

.02 0

.07 0

.00 0

.09 0

.00 Aug 2 18

.85 0

.00 0

.02 0

.06 0

.00 0

.08 0

.00 Aug 3 18.41 0 .01 0

.02 0

.50 18.04 18.57 0 .00 Aug 4 15.19 0 .00 0

.02 0

.47 0

.87 1,30 0 .00 Aug 5 15.1 1 0 .00 0

.02 0

.16 0

.00 0A8 0 .00 Aug 6 13

.25 Q

.00 0

.01 0

.12 0

.00 0

.13 0

.00 Aug 7 15.84 0 .00 0

.02 0

.44 0_00 0.46 0 .00 Aug 6 14.67 0 .00 0.02 0_11 0 .00 0

.13 0

.00 Aug 9 11 .51 0 .00 0

.01 0

.10 0

.00 0

.1,1 0

.00 Aug 10 12.70 0 .00 0

.01 0

.09 0

.00 0

.10 0

.00 Aug 11 12

.64 0

.00 0

.01 0

.09 0

.00 0

.10 0

.00 Aug 12 12

.32 0

.00 0

.01 0

.09 0

.00 0

.10 0

.00 Aug 13 10

.87 0

.00 0

.01 0

.07 0

.00 0

.08 0

.00 AU914 11 .77 0 .00 0

.01 0

.54 0

.00 0

.55 0

.00 Aug 15 13.17 0_00 0 .01 0

.59 0

.00 0

.60 0

.00 Aug 16 12.99 0 .00 0

.01
. 0

.05 0

.00 0

.06 0

.00 Aug 17 13.37 0 .00 0

.01 0

.05 0

.00 0

.06 0

.00 Aug 18 13,50 0 .00 0

.02 0

.06 0

.00 0

.08 0

.00 Aug 19 15,03 0 .00 0

.02 0

.28 0

.00 0

.30 0

.00 Aug 20 14,45 0 .00 0

.02 0

.29 0

.00 0

.31 0

.00 Aug 21 16

.1 3 0

.00 . 0

.02 0

.29 0

.00 0

.31 0

.00 Aug 22 15.36 0 .00 0

.02 0

.04 0,00 ' 0 .06 0,00 Aug 23 14.33 0 .00 0

.02 0

.23 0

.00 0.25 0_00 Aug 24 13.56 0 .00 0

.01 0

.04 0

:00 0

.05 0

.00 Aug 25 15.71 0 .00 0

.02 0

.06 0

.00 0.06 0 .00 Aug 26 19.03 0 .01 0

.02 0

.05 0,00 0 .08 0

.00 Aug 27 18.57 0 .00 0.02 0,36 0 .00 0,38 0 .00 Aug 28 19

.27 0

.00 0

.02 0

.23 0

.00 0

.30 0

.00 Aug 29 17 .74 0_00 0 .02 0

.06 0

.00 0

.08 0

.00 Aug 30 14.06 0 .00 0

.01 0

.05 0

.00 0

.06 0

.00 Aug 31 14.90 0 .00 0

.02 0

.05 0,00 0.07 0,00 'Total 0-02 0.50 5 .74 18.85 25_11 Total (year-to-date) '93.88 3.70 45.31 24 .78 167 .87 Notes : 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## ~SEP

. 12. 2007- 1 :41 PM DEQ/PCD/A'NMB



## . 

## cONOCOpHILLIPs BILLINGS REFINERY SULFUR RiOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Sep~06 ---------------TQNS of S02 --- 

## N0 . 493 P. 10

. H2 .5 PPM Boiler Sulfur in Fuel Date Fuel Gas House Fumaces FCC ROM Total LbIMMbtu(1) Sep 1 13

.71 0

.07 0

.01 0

.05 0

.00 0

.13 0

.00 Sep 2 15

.87 0

.08 0

.02 0

.06 0

.00 0

.16 0

.01 Sep 3 17.91 0 .09 0

.02 0

.08 0,00 0 .19 0

.01 Sep 4 14

.17 0

.09 0

.02 0

.10 0

.00 0,21 ' 0 .01 Sep 6 15.88 0 .08 0.02 0 .10 O,a0 020 0 .01 Sep 6 14,30 0 .09 0

.02 0

.08 0

.00 0

.19 0

.01 Sep 7 13.34 0.10 0.01 0.10 0.00 021 0.01 Sep 8 14.71 0.10' 0.02 0.08 0 .00 0.20 0.01 Sep 9 14.20 0.10 0.02 0.08 0.00 0.20 0.01 Sep 10 13,72 0,10 0.02 0.07 0 .00 0

.19 0.01 Sep 11 12.82 0.09 0.01 0.07 0.00 0.17 0

.,01 Sep 12 15.59 0,09 0.02 0.08 0.00 0.19 0.01 Sep 13 12.71 0,08 0.01 0.09 0.00 0.18 . 0.01 Sep 14 13.11 0.09 0.01 0.07 0.00 D.17 0.01 Sep 15 13.81 0.09 0.01 0.07 0.00 0.17 0.01 Sep 16 13.29 0.09 0.01 0.07 0.00 0 .17 0.01 Sep 17 13.36 0.09 . 0.01 0.06 0.00 0.16 0 .01 Sep 18 12.58 0,08 0.01 0.06 0.00 0 .15 0.01 Sep 19 12

.60 0

.08 0.01 0 .05 0.00 0.14 0.01 Sep 20 12

.69 0

.09 0

.01 0

.06 0.00 0.16 0.01 Sep 21 21 .98 0.08 0 .02 0

.06 0.00 0.16 0.01 Sep 22 22.51 0 .09 0

.02 0.07 0.00 0.18 0.01 

## sep 23 21 .02 0.09 0.02 0,07 0 .00 0.18 0.01 Sep 24 22_02 0 .09 0

.02 . 0

.06 0

.00 0

.17 0

.01 Sep 25 22.26 0 .08 0

.02 0

.07 0

.00 0

.17 0

.01 Sep 26 17 .80 0 .08 0

.02 0

.07 0

.00 0

.17 0

.01 Sep 27 21 .39 0 .08 0

.02 0

.07 0

.00 0_17 0,01 Sep 28 20.93 0 .08 0

.02 0

.06 0

.00 0

.16 0

.01 Sep 29 19.72 0 .09 0

.02 0

.08 0

.00 0

.19 0

.01 Sep 30 19.20 0 .09 0

.02 0

.08 0

.00 0

.19 0

.101 Total - 2.62 0.49 2 .17 0.00 5.28 Total (year-to-date) 96 .50 4

.1'9 47.48 24 .78 172.95 Notes: 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP .12 .2007 1 :41PM DEQ/PCD/RWMB

CONOCOPHILl .IP3 SIILLJNGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANA AIR QUALITY BUREAU

Oct-05 

## N0 . 493 P. 11

-- --------~----_--------TONS of S02 - -- -------- .---~-- H23 H2S PP Soiler Sulfur in Fuel Date Fuel Gas HouSe Fumaces FCC Flare Total LbIMMbfu(1) Oat 1 14

.24 0

.09 0

.01 0

.08 0

.00 0

.18, 0

.01 Oct 2 13.41 0 .09 0_01 0,06 0 .00 0

.16 0

.01 Oct 3 11 .89 0 .67 0

.01 0

.04 0

.00 0

.72 0

.04 Oct4 17 .93 1 .17 0 .02 0,03 0 .00 1 .22 0 .47 Oct 5 14.27 0 .99 0

.01 0

.03 0

.00 1 .03 0 .06 Oct 6 11 .91 1 .06 0.01 0.04 0.00 1 .11 . 0.06 Oct 7 14.09 1 .00 0.01 0 .05 0.00 1 .06 0.06 Oct S 12

.40 0.93 0.01 0.05 0.00 0.99 0.05 Oct 9 13.79 0.83 0 .01 0.06 0 .00 0.90 0.05 Oct 10 12

.72 0.56 0.01 0.07 0 .00 0,64 0 .04 Oct 11 14

.52 0.32 0.01 0.08 0.00 0.41 0,02 Oct 12 17 .23 0.32 0.01 0.06 0.00 0 .39 0.02 Oct 13 14.24 0.01 0.01 0.04 0.00 0.05 0,00 Oct 14 13

.97 0.01 0.01 0.03 0.00 0.05 0 .00 Oct 1S 15.03 0 .01 0.0~1 0.05 0.00 0 .07 0.00 Oct 16 15.46 0.01 0.01 0,08 0.00 0 .10 0.00 Oct 17 19

.90 0

.02 0

.02 0.06 0,00 0.10 0.00 0018 15.72 0.02 0.01 0 .07 0.00 0.10 0.00 Oct 19 21,79 0 .02 0.02 0.07 0.00 0 .11 0.00 0oC20 13.56 0.02 0.01 0.05 0 .00 0.08 0_00 Oct 21 13.90 0.01 0.01 0.06 0.00 0 .08 0.00 Oct 22 12,05 0.01 0.01 0 .06 0.00 0 .08 0.00 Oct 23 32.21 0 .01 0.0, 0.06 0.00 0 .08 0

.00 Oct 24 12.54 0.01 041 0.06 0.00 0 .08 0.00 Oct 26 12.37 0.02 0.01 0.07 0 .00 0

.10 0

.00 Oct 26 13

.85 0.01 0.02 0.07 0 .00 0.10 0.00 Oct 27 12

.72 0.01 0.01 0.06 0 .00 0.08 0 .00 Oct 28 12

.96 0.01 0.01 0.05 0.00 0 .07 0.00 Oct 2S 11 .40 0 .03 0.01 0 .03 0.00 0,07 0.00 Oct 30 10.28 0.05 0 .01 0

.06 0.00 0,12 0.00 Oct 31 14.61 0 .04 0.02 0.06 0.00 0.12 0.00 Total 8 .34 0

.40 1 .74 0 .00 10.48 Total (year-to-date) 104 .84 4

.59 49.22 24 .78 183.43 Nates : 1 . Sulfur in gas and o1 fuels per MMbtu's HHV .

## SEP.12.2007 1 :41PM DEQ/PCD/AWMB

CONOCOPHII .LIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

IVav" 05 

## N0 . 493 P. 12

---~-~---~-_.-- . .-'fONS of SO2------~-r----~--------- - - FIZS PPM Sailer Sulfur

_ in Fuel Date Fuel_Gas House Fuac@s FCC Flare Total LbIM__ Mb ~ tu(11 Nov 1 10,93 0 .01 0

.01 0

.06 0

.00 0,08 0.00 Nov 2 10

.77 0

.01 0_01 0 .05 0

.00 0.07 0.00 Nov 3 1 0

.82 0

.01 0

.01 0

.07 0

.00 0,09 0 .00 . Nov 4 9

.97 0

.06 0

.01 0

.06 0

.00 0

.13 0

.00 Nov 5 11 .92 0 .61 0

.01 0

.05 0

.00 0

.67 0

.04 Nov 6 11 .86 1 .02 0 .01 0

.06 0

.00 1 .09 0 .06 Nov 7 9

.57 1 .16 0 .01 0

.06 0

.00 1 .23 0 .07 Nov 8 8

.29 1 .39 0 .01 0

.03 0.00 1 .43 0 .08 Nov 9 . 7.40 1 .14 0 .01 0

.05 0,00 1 .20 0 .07 Nov 10 12

.95 0

.93 0

.01 0

.05 0

.00 0

.99 0

.06 Nov 11 9.11 1 .07 0 .01 0

.04 0

.00 1 .12 0 .06 Nov 12 9

.09 0

.94 0

.01 0

.04 0

.00 0

.99 0

.05 Nov 13 10

.24 0

.67 0

.01 0

.04 0

.00 0

.72 0

.04 Nov 14 8

.68 0

.76 0

.01 0

.06 0

.00 0

.133~ 0

.04 Nov 15 9

.76 0

.86 0

.01 0

.06 0

.00 0

.93 0_05 Nov 16 12.00 1 .02 0 .01 0

.06 0

.00 1 .09 0 .06 Nov 17 10.04 0 .88 0

.01 0

.08 0

.00 0

.97 0

.05 Nov 18 12.05 1 .21 0 .01 0

.09 0

.00 1 .31 0 .07 Nov 19 10-10 1 .16 0 .01 0

.09 0

.00 1 .26 0 .06 Nov 20 15.78 1 .00 0 .02 0

.08 0

.00 1 .10 0 .06 Nov 21 10.36 0 .41 0

.01 0

.10 0

.08 0.60 0 .02 Nov 22 10.63 0 .45 0

.01 0

.10 0

.06 0

.62 0

.03 Nov 23 10.58 0_52 0 .01 0

.10 0.06 0 .69 0

.03 Nov 24 9.73 0 .63 0

.01 0

.08 0

.06 0

.68 0,03 Nov 25 9.83 0 .52 0

.01 0

.08 0

.04 0

.65 0.03 Nov 26 9

.29 0

.83 0

.01 0

.07 0

.17 1 .08 0 .05 Nov 27 9

.11 1 .00 0 .01 0

.08 0

.03 1 .12 0 .05 Nov 28 9.27 1 .00 0 .01 0

.08 0

.02 1 .11 0 .06 Nov 29 9.10 0 .95 0_01 0 .08 0

.13 1 .17 0,05 Nov 30 9.26 0_91 0 .01 0

.07 0.00 0.99 0 .05 Total 23 .02 0

.32 2.01 0 .67 26.02 Total (year-to-date) 127.86 4 .91 51 .23 25.45 209 .45 Notes : 1 . Sulfur in gas and nil fuels per MMbtu's HHV .

## SEP .12 .2007 1 :42PM DEQ/PCD/AWMB N0.493 P. 13

.

CONOCOPHILLIPS

BILLINGS REFINERY -SULFUR DIOICIDE EMISSIONS REPORT

' ~ FOR MONTANA

AIR QUALITY BUREAU Dec-05

- --- - .-- .~- .----TONS of SC?2- H2S PPM Boiler Sulfur in Fuel Date Fuel Gas Fiouse Furnaces FCC Fl are Total LbIMMbtum Dee 1 9.37 0 .91 0

.01 0

.07 0

.00 0

.99 0

.05 Dec 2 8

.80 0

.94 0

.01 0

.05 0

.00 1 .00 0 .05 Dec 3 9

.43 1 .13 0 .01 0

.07 0

.00 1 .21 0 .07 Dec 4 9

.15 1 .09 0 .01 0

.08 0

.00 1 .18 0 .06 0005 9

.63 1 .01 0 .01 0

.08 0

.00 1 .10 0 .04 Dec 6 9

.06 1 .07 0 .01 0-06 0 .00 1 .14 0 .05 Dec 7 8

.94 1 .18 0 .01 0

.08 0

.39 1 .66 0 .07 Dec 8 8

.58 1 .11 0 .01 0

.07 0

.00 1 .19 0 .07 Dec 9 7.44 0 .91 0

.01 0

.03 0

.00 0.95 0 .06 Dec 10 6

.27 1,36 0 .01 0

.04 0

.00 1A1 0 .07 Dec 11 13.01 1 .38 0,01 0 .13 0

.00 1 .52 0 .07 Dec 12 6

.58 1 .42 0 .01 0

.02 0

.00 1 .45 0 .08 Dec 13 7

.05 1 .29 0 .01 0

.06 0

.00 1 .36 0 .07 Dec 14 8

.35 1 .16 0 .01 0

.07 0.00 1 .24 0 .06 Dec 15 9

.49 1 .14 0 .01 0

.06 0

.00 1 .21 0 .06 Dec 16 9.42 1 .09 0 .01 0

.06 0

.00 1 .16 0 .06 Dec 17 9.22 1 .07 0 .01 0

.07 0

.00 1 .15 0 .06 Dec 18 9

.48 1 .19 0 .01 0

.07 0

.00 1 .27 0 .07 Dec 19 8

.74 1 .15 0 .01 0

.04 0

.00 1 .20 0 .06 Dec 20 9

.14 1,20 0 .01 0

.02 0

.00 1 .23 .0.07 Dec 21 9

.46 1 .08 0 .01 0

.03 0

.00 1 .12 0 .06 Dec 22 ' 9

.43 0

.77 0

.01 0

.05 0

.00 0

.83 0

.04 DeC23 9

.68 0

.82 0

.01 0

.08 0

.00 0_91 0 .05 Dec 24 18.02 0 .80 0

.02 _ 0

.10 0

.00 0

.92 0

.05 Dec 25 10

.45 0

.80 0

.01 0

.09 0

.00 0

.90 0

.04 Dec 26 11 .06 0 .80 0

.01 0

.08 0

.06 0

.95 0

.04 Dec 27 12

.33 0

.84 0

.01 0

.07 0

.14 1 .06 0 .05 

## Deo 28 27.75 0,73 0.03 0.09 0.0 .5 0 .90 0.04 Dec 29 13

.17 1 .46 0.01 0 .10
. 0.03 1 .60 0 .03 Dec 30 15

.21 1 .40 0.02 0.11 0.01 1-54 0 .02 Dec 31 10.58 0 .38 0

.01 0

.10 0

.13 0

.62 0

.02 TOW 30 .67 0

.35 2

.15 0

.81 33.98 Total (year-to-date) 158.53 5.26 53.38 26.26 243.43 Notes: ~ 1 . Sulfur in gas and 61 fuels per MMbtu's Hh1V.

## SEP, 12. 2007 1 :42PM DEQ~/P~CD/AWMB q o N0. 493 P. 14

CONOCt]PHILtiis"

S BILLINGS REFINERY SULFUR DYOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Jan-06 -TONS of 802--~--------^-~- H23 PM Boiler Sulfur in Fuel Date Fuel Gas House Furnaces FCC Flare Total LbIMMbtu(1) Jan 1 10.02 0 .42 0

.01 0

.0s Jan 2 . 10.24 0 .42 0

.01 0

.09 Jan 3 20.48 0 .53 0

.02 0

.06 Jan 4 8

.93 0.60 0 .01 0

.03 Jan 5 'C 8

.37 0

.97 0

.02 0

.03 Jan 6 9

.83
. 0.92 0 .01 0

.03 Jan 7 9

.66 0

.94 0

.01 0

.03 Jan 8 9

.49 0.88 0 .01 0

.03 Jan 9 9

.30 0

.96 ' 0

.01 0

.04 Jan 10 9

.46 1 .13 0 .01 0

.04 Jan 11 9.46 0 .34 0

.01 0

.03 Jan 12 8

.53 0

.33 0

.01 0

.03 Jarr 13 9

.77 0

.91 0

.01 0

.03 Jan 'i4 9

.67 0

.90 0

.01 0

.03 Jan 15 9

.28 0.94 0 .01 0

.02 Jan 16 9

.20 0

.95 0

.01 0

.03 Jan 17 9

.36 0

.95 0

.01 0

.03 Jan 18 9.86 0 .85 0

.01 0

.03 Jan 19 9

.35 0

.80 0

.01 0

.03 Jan 20 9

.41 0

.81 0

.01 - 0

.03 Jan 21 9.43 0 .87 0

.01 0

.03 Jan 22 9

.54 0

.88 0

.01 0

.03 Jan 23 15.18 0 .97 0

.02 0

.02 Jan 24 10

.13 0

.91 0

.91 0

.02 Jan 25 9

.94 0

.86 0

.01 0

.03 Jan 26 9

.84 0

.95 0

.01 0

.02 Jan 27 9

.10 0

.92 0

.01 0

.02 Jan 28 9

.51 0

.89 0

.01 0

.01 Jan 29 9

.22 1,13 0 .01 0

.01 Jan 30 9

.33 1 .05 0 .01 0

.01 Jan 31 9

.62 1 .02 0 .01 0

.01 Total 25 .96 0

.34 0

.99 Total (2006 year-to-date) 25 .96 0

.34 0

.99 Notes: 1 . Sulfur in gas and oil fuels per MMbtu's HHV . 0

.00 0

.51 0

.02 0 .00 0

.52 0

.02 0 .04 0

.65 0

.03 3.05 3.69 0 .04 1 .22 224 0.05 0 .00 0

.96 0

.05 

## 0 .00 0

.98 0.05 0_00 0

.92 0

.05 0 .00 1 .01 0 .07 0 .00 1 .18 0 .02 0 .00 0

.38 0

.02 0 .00 0

.37 0

.05 0 .00 0

.95 0

.05 0 .00 0

.94 0

.05 0 .00 0

.97 0

.05 0 .00 0

.99 0

.05 

## 0 .00 .0.99 0.05 0 .29 1 .18 0 .05 0 .11 0

.95 0

.04 0 .08 0

.93 0

.04 0 .00 0

.91 0

.05 0 .00 0

.90 0

.05 

## 0.00 1 .01 0

.05 0 .00 0

.94 0

.05 0 .46 1 .36 0 .05 0 .00 0.98 0.05 0.00 0.95 0.05 0.00 0.91 0.05 0.00 1 .15 0 .06 0.00 1 .07 0.06 0 .00 1 .04 0_06 5 .25 $2.54 5.25 32_54

## SEP, 12, 2007 1 :43PM DEQ/PCD/AWMB N0, 493 P, 15



## coNOCOPHrLUPs BILLINGS REFINERY SULFUR b107CIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Feb-06

-- -- - TONS

-- of S02--- H2S PPM ROE Sulfur in Fuel D2 e Fuel

Gas lio.1jse Furnaces, FCC Flare Total Lb/MMbt4(l) Feb 1 9

.07 0

.78 0

.01 0

.02 Feb 2 9

.72 0

.87 0

.01 0

.03 Feb 3 9

:37 0

.78 0

.01 0

.03 Feb 4 . 9

.76 0

.97 0

.01 0

.03 Feb 5 9

.58 0,79 . 0 .01 0

.03 Feb 6 9.40 0 .82 0

.01 0

.04 Feb 7 9.98 0 .79 0

.01 0

.04 Feb 8 9.15 0 .83 0

.01 0

.03 Feb 9 9.29 0 .77 0

.01 0

.03 Feb 10 9.16 0 .79 0

.01 0

.03 Feb 11 8.71 0 .78 0

.01 0

.04 Feb 12 9

.15 0

.75 0

.01 0

.04 Feb 13 . 8

.94 0

.74 0

.01 0

.04 Feb 14 11 .62 . 0 .72 0

.0'1 0,04 Feb 15 9

.06 0

.66 0

.01 0

.04 Feb 16 8

.94 0

.74 0

.01 0

.04 Feb 17 8

.92 0

.85 0,01 0 .03 Feb 18 9

.0'1 0

.45 0

.01 0

.03 Feb 19 10.92 0 .34 0

.01 0

.04 Feb 20 10s3 0 .75 0,01 0 .05 Feb 21 18

.55 0

.77 0.02 0 .04 Feb 22 13

.20 0

.73 0

.01 0

.03 Feb 23 9

.87 0

.78 0

.01 0

.04 Feb 24 9

.80 0

.78 0

.01 0

.03 Feb 25 9

.21 0

.71 0

.01 . ' 0

.04 Feb 26 9

.71 0

.68 0

.01 0

.05 Feb 27 9

.62 0

.93 0

.01 0

.05 Feb 28 9

.38 0,86 0 .0'1 0

.04 0

.00 0,81 0 .04 0 .00 0

.91 0

.05 0 .00 0

.82 0

.04 0 .00 1 .01 0 .05 0 .00 0

.83 0,04 0 .00 0

.87 . 0

.04 125 2.09 0 .04 1 .25 2.12 0,05 0 .00 0

.81 0

.04 0 .00 0

.83 0

.04 0 .00 0

.83 0

.04 0 .00 0

.80 0

.04 0 .00 0.79 0 .04 0 .00 0,77 0,04 0 .15 0

.86 0

.03 0 .30 1 .09 0 .04 1 .05 1 .94 0 .04 1 .00 1 .49 0_03 0 .00 0

.39 0

.02 

## 1 .00 1 .81 0.04 0 .00 0

.83 0,04 

## 0 .50 127 0.04 0 .00 0

.83 0

.04 0 .00 0

.82 0

.04 

## 0 .00 0.76 0

.04 0 .00 6.74 0.04 1 _'00 1 .99 0 .05 0 .00 0.93 0 .05
Monthly Total 21 .20 0_31 1,00 7.50 30,01 Total (year-to-date) 47.'{6 0 .66 1,99 12.75 62.55 Notes: 1_ Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP, 12. 2007 1 :43PM DEQy/~P'CD/AWMB -~, N0, 493 P, 16



## cONOCOpHILLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Mar-06 -~---------TONS of S02-------~-----~-------~-- H2S PPM Boiler Sulfur in Fuel Date Fuel Gas House Furnaces FCC Flare Total LYyIMMbtu(1) Mar 1 10.59 0 .88 0

.01 0

.03 0.00 0.92 0 .05 Mar 2 12

.32 0

.81 0

.01 0

.03 0

.00 0

.85 0

.04 Mar 3 12.78 0 .82 0

.02 0

.03 0.00 0 .87 0

.04 Mar 4 12

.68 0

.82 0

.02 0

.04 0

.00 0

.88 0

.04 Mar 5 10.25 0 .70 0

.01 0

.05 0

.00 0

.76 0

.04 Mar 6 14.69 0 .66 0

.02 0

.05 0

.00 0.73 0 .03 Mar 7 13.37 0 .69 0

.02 0

.0$ 0

.00 0

.77 0

.04 Mar 8 13.12 0 .49 0

.02 0

.06 0

.00
_ 0

.57 0

.02 Mar 9 12

.30 0

.48 0

.02 0

.06 0

.00 0

.56 0

.02 Mar 10 11 .44 0 .43 0

.01 0

.06 0

.00 0

.50 0

.02 Mar 11 1 1 .78 0 .43 0.02 0 .05 0

.00 0

.50 0.02 Mar 12 1127 0 .43 0

.01 0

.05 0

.00 0

.49 0.02 Mar 13 11 .17 0 .42 0

.01 0

.06 0

.00 0

.49 0

.02 Mar 14 11 .19 0 .46 0

.01 0

.06 0

.00 0

.53 0

.02 Mar 15 11 .06 0 .47 0

.01 0

.04 0

.00 ~ 0

.52 0

.02 Mar 16 12

.91 0

.51 0

.01 0

.04 0

.70 0

.66 0

.03 Mar 17 11 .90 0 .57 0

.01 0

.05 0

.40 1 .03 0 .04 Mar 18 11 .13 0 .57 0

.01 0

.03 0

.70 1 .31 0 .04 Mar 19 8

.31 0

.74 0

.00 0

.02 0

.00 0

.76 0

.06 Mar 20 9

.48 0

.69 0

.01 0

.03 0

.00 0

.73 0

.06 Mar21 8

.00 0

.76 0

.00 0.04 0 .00 0

.80 0

.06 Mar 22 829 0 .75 0

.00 0

.04 0

.00 0

.79 0

.06 Mar 23 6

.70 0

.90 0

.00 0

.04 0

.05 0

.99 0

.07 Mar 24 7.10 1 .02 0 .00 0

.03 0

.00 1 .05 0 .08 Mar 25 6,13 1 .03 0 .00 0

.03 0

.00 1 .06 0 .08 Mar 26 5.55 1 . .01 0 .00 0

.02 0

.00 1 .03 0 .07 Mar 27 5

.33 1 .04 0 .00 0

.03 0

.00 1 .07 0 .07 Mar 28 8.30 0 .94 0

.01 0

.06 0

.00 1 .01 ' 0 .06 Mar 29 13.54 0 .94 0

.01 0

.06 0

.00 1 .01 0 .05 Mar 30 12.67 0 .99 0

.02 0

.09 0

.fl0 1 .10 0 .05 Mar 31 12.25 1-04 0 .02 0

.13 0

.00 1 .19 0 .05 Total 22 .49 0

.35 1 .47 1 .25 25.56 Total (year-to-date) 69.65 1 .00 3.46 14.00 88,11 Notes : 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP,12.2007 1 :43PM DEQ/PCD/AWMB



## . N0, 4_93 P, 17 

# JUL 3 1 Ms W Dept Environmental OuaGty CONOGCIPHILUPS Air Resources M nagame DBMW BILUNGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Apr-06

------- TONS of 502--~----------------^rH2S PPM Boiler Sulfur in Fuel Da te Fuel Gas Nouse Furna FGC Flare ' T otal Lb/Mbtuffl Apf 1 '! 9.28 1 .03 0 .02 0

.14 0

.00 1 .19 0 .06 Apr2 17 .00 0 .83 0,02 0 .14 0_00 0 .99 0

.04 Apr 3 12.66 0 .83 0

.02 0

.16 0

.00 1 .01 0 .04 Apr 4 18.74 1 .10 0 .02 0

.15 0

.00 1 .27 0 .05 Apr 5 19.56 1 .07 0 .02 0

.18 0,00 1 .27 0 .05 Apr 6 14

.06 . 1 .01 0 .02 0

.24 0

.00 1 .27 0 .05 Apr 7 16

.68 0

.57 0

.02 0

.24 0_00 0 .83 0

.03 Apr 6 13.73 0 .26 0

.02 0

.28 0

.00 0

.56 0

.02 Apr 9 29.42 0128 0,03 0 .27 2

.60 3.18 0 .02 Apr 10 34

.57 0,25 0 .04 0_15 0 .00 0

.44 0

.02 Apr 11 11 .62 0 .19 0

.01 0

.16 0

.00 0

.36 0

.01 Apr 12 17 .83 0 .18 0

.02 0

.24 0

.00 0

.44 0

.01 Apr 13 11 .27 0 .20 ' 0,01 0 .26 0

.00 , 0

.47 0

.01 Apr 14 10

.86 0

.18 0

.01 0

.25 0

.00 0

.44 0,01 Apr 15 12

.92 0

.19 0

.02 0

.18 0

.00 0

.39 0

.01 Apr 1.6 19

.96 0

.19 0

.02 0

.16 0

.00 0

.37 0

.01 Apr 17 13

.65 0

.18 0

.02 0

.10 0,00 0 .30 0

.01 Apr 18 12

.91 0

.17 0

.02 0.14 0 .00 0

.33 0

.01 Apr 19 20.33 , 0 .17 0

.02 0

.18 0_00 0 .37 0

.01 Apr 20 23.05 0 .15 0

.03 0

.20 0

.00 0

.38 0

.01 Apr 21 34.02 0 .13 0

.04 0

.17 0

.00 0

:34 0,01 Apr 22 27.78 0 .14 0

.04 0

.18 0

.00 0

.36 0

.01 Apr 23 1 1 .28 0 .15 0

.01 0

.17 0

.00 0

.33 0

.01 

## Apr24 11 .69 0.14 0 .02 0.14 0

.00 0

.30 0

.01 Apr 25 11 .90 0 .12 '0.02 0.11 0 .00 0

.26 0

.01 Apr 26 10.94 0 .13 0.01 0

.06 0

.00 0

.20 0

.01 Apr 27 13.09 0 .18 0

.02 0

.05 0

.00 0

.25 0

.01 Apr 28 12.75 0 .18 0

.02 0

.06 0

.00 0

.26 0

.01 Apr 29 11 .54 0 .13~ 0,01 0 .04 0

.00 0

.18 0

.01 Apr 30 13

.68 0

.12 0

.02 0

.04 0

.00 0

.18 0

.01 Total 10 .45 0

.63 4

.84 2,60 18.52 Total (year-to-date) 80.'[0 1 .63 8 .30 16.60 106.63 Notes: 1, Sulfur in gas and oil fuels per MMbtu's HHV_

## SEP.12.2007 1 ;44PM DEQ/PCD/AWMB

t CONOCOPHILlIPS

BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANA AIR QUALITY BUREAU

May-06 

## NO . 493 P. 18

~-- --~-TONS of 802 H2S PPM Bailer Sultfiar in Fuel Date el Gas Hous_e_ Furnaces FCC Flare Tatai Lb/A+IMbtu(1) May 1 1 1 .71 0 .11 0

.02 0

.07 0

.00 " 0

.20 0

.01 May 2 11 .93 0 .13 0

.02 0

.06 0

.00 0

.21 0

.01 May 3 " 10

.69 0

.13 0

.01 0

.03 0

.00 0

.17 0

.01 May 4 10

.15 0

.12 0

.01 0

.04 0

.00 0-17 0 .01 May 3 11 .32 0 .12 0

.01 0

.03 0

.00 0

.16 0

.01 May 6 9

.96 0

.11 0

.01 0

.04 0

.00 0

.16 0

.01 May 7 11 .04 0 .10 0

.01 0

.04 0

.00 0

.16 0

.01 May $ 1 0

.12 0

.11 0

.01 0.06 0 .00 0

.18 0

.01 May 9 10.31 010 0 .01 0

.06 0.G0 0.17 0.01 May 10 10.12 0.10 0 .01 0.06 0 .00 0

.17 0 .01 May 11 7.93 0-12 0 .01 0.07 0 .00 0.20 0.01 May 12 9.23 0.15 0.01 0.05 0.00 0.21 0.01 May 13 8.68 0.15 0.01 0 .04 0

.00 0.20 0.01 May 14 9.38 0 .11 0.01 0.05 0.00 0.17 0.01 May 15 9.40 0 . "i 3 0.01 0.06 0:42 0.62 0.01 May 16 14

.36 0

.11 0.02 0.06 0.00 0.19 0.01 May 17 18

.67 0

.10 0.02 0 .05 0.00 0.17 0.01 May IS 5

.01 0.02 0 .01 0

.06 0.00 0 .09 0.00 M2y 19 16.00 0.02 0 .02 0.06 0 .00 0.10 0.00 May 20 9

.07 0.02 0.01 0.07 0 .00 0.10 0.00 May 21 12.91 0.02 0.02 0.06 0.00 0.10 0.00 May 22 8.56 0 .02 0.01 0.08 0.00 0.11 0.00 May 23 8.17 0.01 0.01 0.09 0.00 0.11 0.00 May 24 8.22 0.01 0.,01 0.11 0 .00 0

.13 0.00 May25 14

.25 0

.01 0.02 0.13 0.00 0.16 0.00 May 26 9

.14 0.01 0.01 0 .15 0.00 0.17 0.00 May 27 8

.90 0.00 0 .01 0.18 0.00 0.19 0 .00 May 28 9.73 0,01 0 .01 0.21 0.00 0.23 0:00 May 29 8.e5 0.00 0.01 0.25 0.00 0.26 0.00 May 30 8.51 0 .00 0.01 0.22 0.00 0.23 0.00 May 31 9.87 0 .00 0.01 0.24 0.00 0 .25 0.00 Total 2 .16 0

.40 2

.77 . a,a2 6 .76 Total {year-to-date} 82 .26 2

.03 11 .07 17 .02 112.38 Notes: 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP, 12. 2007 1 :44PM DEQ/PCD/AWMB N0, 493 P, 19


## CoNOCOPHILUps BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Jun-06

---- ---TONS of SO H2 FPM Bailer Sulfur in Fuel Date Fuel Gas House Furnaces FCC Flare Total LbIMMb (1) Jun 1 12

.40 0

.01 0

.02 0

.21 0

.00 0

.24 0100 Jun 2 9

.28 0

.11 0

.01 0

.04 0

:00 0

.16 0

.01 Jun 3 9

.33 0

.12 0

.01 0

.05 0

.00 0

.18 0

.01 Jun 4 8_36 0 .01 0

.01 0

.10 0

.00 0

.12 0

.00 Jun 5 23.87 0 .01 0

.03 0

.11 0

.0Q 0

.15 0

.00 Jurk 6 8

.80 0

.00 0

.01 0

.12 0

.00 0

.13 0

.00 

## Jun 7 8.47 0.03 0.01 0.05 0.00 0.09 0.00 Jun 8 9,23 0 .00 0

.01 0

.04 0

.00 0

.05 0

.00 Jun 9 8

.71 0

.00 0

.01 ' 0

.05 0

.00 0

.06 0

.00 Jun 10 8.91 0 .00 0

.01 0

.08 0

.00 0

.09 0

.00 Jun 11 8.58 0 .00
_ 0

.01 0

.09 0

.00 0

.10 0

.00 Jun 12 7.77 0,00 0 .01 0

.08 0,00 0 .09 0

.00 Jun 13 8.45 0 .00 0~.01 0 .06 0

.00 0

.07 0

.00 Jun 14 8,43 0 .00 0

.01 0

.06 0

.00 0

.07 0

.00 Jun 16 8.49 0 .00 0,01 0 .05 0AO 0 .09 0

.00 Jun 16 8

.40 0

.01 0

.01 0

.10 0

.00 0

.12 0

.00 Jun 17 S_45 0 .00 0

.01 0

.13 0

.00 0

.14 0

.00 Jun 18 8

.60 0

.00 0

.01 0

.14 0~00 0_75 0 .00 ,Jun 19 8

.97 0

.00 0

.01 0

.16 0

.00 0

.17 0

.00 Jun 20 8.83 0 .00 0

.01 0

.14 0,00 0 .15 0_00 Jun 21 8

.16 0

.00 0

.01 0

.17 0

.00 0

.18 0

.00 Jun 22 18.37 0 .00 0

.02 0

.16 0

.00 0

.17 0,00 Jun 23 10

.42 0

.00 0

.01 . 0

.14 0

.00 0

.15 0

.00 Jun 24 9

.29 0

.02 10;01 0 .10 0

.00 0

.13 0

.00 Jun 25 9

.41 0

.00 0

.01 0

.16 0

.00 0

.17 0

.00 Jun 26 9

.50 0

.00 0

.01 0

.18 0

.00 0

.19 0

.00 Jun 27 13.79 0 .00 0

.02 0

.17 0

.00 0

.19 0

.00 Jun 28 16.39 0 .00 0

.02 0

.10 0

.00 0

.12 0

.00 Jun 29 9

.30 0

.00 0

.01 0

.06 0

.00 0.07 0 .00 Jun 30 3.67 0 .00 0

.01 0,03 0 .00 0.04 0 .00 Total 0 .38 0

.35 3

.14 0

.00 3.87 Total (year-to-date) 82 .64 2

.38 14

.21 17 .02 116 .25 Notes : 1 . Su(fur in gas and ail ftiels per MMbtu's Hi-1V.

## SEP.12.2007 1 :45PM DEQ/PCD/AWMB 14,

CONOCOPHILJ . .IIpS

8I1rUNCS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Jul-06 

## N0, 493 P. 20

--- - TONS of S02
- - I H2S PP BLOW Date Fcue( Gas atrse 1=umaees FCC Jul 1 8_45 0 .01 0

.01 0

.02 Jul 2 8

.65 0

.01 0

.01 0

.02 Jul 3 8

.92 0

.01 0

.01 0

.01 Jul 4 8

.69 0

.00 0

.01 0

.01 Jul S 11 .64 0 .00 0

.01 0

.01 Jul 6 17 .66 0 .00 0

.02 0

.01 Jul 7 9.11 0 .00 0

.01 0

.05 Jul 8 - 10.89 0 .07 0

.01 - 0

.06 Jul 9 8.26 0 :01 0

.01 0

.06 

## Jul 10 8.17 0.00 0.01 0.07 Jul 1t 8

.35 0

.00 0

.01 0

.06 Jul 12 8

.80 0

.00 0

.01 0

.05 Jul 13 8.87 0 .01 0

.01 0

.05 

### Jul 14 20

.64 0_01 0 .02 0

.05 

## Jul 16 8

.81 0

.01 0.01 0

.04 Jul 16 8

.84 0

.00 0

.01 0

.05 Jul 17 9

.22 . 0

.00 0

.01 0

.05 Jul 18 9.05 O .U0 0

.01 0.06 

## Jul 19 22

.81 0.01 0

.03 0 .06 Jul 20 9.67 0.01 0.01 0.08 Jul 21 9.16 0 .02 0

.01 0

.08 Jul 22 9.38 0.01 0 .01 0.07 Jul 23 9

.97 0

.01 0

.01 0

.06 Jul 24 8

.64 0.01 0.01 . 0.07 Jul 25 1 1 .73 0 .01 0_01 0 .08 Jul 26 8.96 0 .01 0.01 0.08 Jul 27 'f 5.19 0.01 0.02 0.07 Jul 28 8.86 0 .07 0

.01 0

.09 Jul 29 8.90 0.02 0 .01 0.08 Jul 30 8

.88 0

.02 0

.01 0

.08 Jut 31 9.10 0.02 0.01 0.08 Sulfur in Fuel Flare Total LbIMMbtu(1) 0 .00 0

.03 0

.00 0 .00 0

.03 0

.00 0 .00 0

.03 0

.00 0 .00 0_03 0 .00 0 .00 0

.03 0

.00 0 .00 0

.03 0

.00 0 .00 0

.06 0

.00 0 .00 0

.08 0

.00 0 .00 0

.07 0

.00 

## 0 .00 0 .08 0 .00 0.00 0.08 0.00 

## 0 .00 0

.06 0

.00 0.CY0 0

.06 0.00 

## 0 .00 0.08 0

.00 0.00 0

.05 0.00 0 .00 0

.07 0

.00 0 .00 0

.06 0

.00 

## 0.00 0.08 0.00 0.00 0.09 0

.00 0,00 0.10 0

.00 0 .00 0.11 0,00 0 .00 0

.10 0

.00 

## 0.00 0

.09 0.00 0 .00 0_08 0 .00 0 .00 0

.10 0

.00 0 .00 0

.10 0

.00 0 .00 0

.10 0

:00 0 .00 0

.11 0

.00 0 .00 0

.11 0

.00 0 .00 0

.10 0

.00 

## 0.00 0

.11 0.00 Total 0 .25 0.37 1 .69 0.00 2.31 Total (year-to-date) 82.89 2.75 15.90 17,02 118 .56 Notes, 1 . Sulfur in gas and oil fuels per MMb'tu's HHV .

## SEP,12 .2007 1 :45PM DEQ/PCD/AWMB 

## N0 . 493 P. 21

.

CONOCOPHILLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANA AIR QUALITY BUREAU

Aug-I6 -TONS of Sf32 ------- H2S P M Bpiler 9ulfur in Fuel pate Fuel Gas House Furnaces FCC Flare Total LA/MMWu(1) Aug 1 9

.81 o.02 0 .01 0

.08 Aug 2 9

.28 0

.01 0

.01 0

.07 Aug 3 18.16 0 .02 0

.02 0

.06 Aug 4 10,66 0 .02 0

.01 . 0

.07 Aug 5 10.34 o.02 0 .01 0

.07 Aug 6 10.47 0 .02 0,01 0 .05 Aug 7 10.48 0 .02 0,01 0 .05 Aug 8 11 .86 0 .02 - ~0,01 0 .04 Aug 9 11 .80 0 .02 0

.01 0,04 Aug 10 11 .07 0 .03 0

.01 0

.06 Aug 11 10.59 0 .03 0

.01 0

.08 Aug 12 1 0

.05 0

.02 0

.01 0

.17 Aug 13 10.44 0 .07 0

.01 0

.15 Aug 14 10

.33 0

.04 0

.01 0

.15 Aug 15 14.34 0 .05 0

.02 0

.13 Aug 16 9

.45 0.17 0 .01 0

.08 Aug 17 , 9

.47 0

.07 0

.01 0

.15 Aug 18 10

.39 0

.03 0

.01 0

.16 Aug 19 10

.92 . 0,02 0 .01 0

.16 Aug 20 10

.55 0

.02 0

.01 0

.12 Aug 21 10.44 0 .01 0

.01 0

.11' Aug 22 10.44 0 .02 0

.01 0

.10 Aug23 10.31 , 0 .01 0

.01 0

.08 Aug 24 10.11 0 .01 0

.01 . 0

.09 Aug 25 9

.55 , 0

.01 0

.01 0

.07 Aug 26 9

.47 ) 0

.01 0

.01 0,07 Aug 27 9.82 0 .01 0

.01 0,07 Aug 28 9

.42 0

.01 0

.0'Y 0,06 Aug 29 9

.91 0>01 0 .01 0

.06 Aug 30 9

.20 0

.01 0

.01 0

.06 Aug 31 9

.30 0

.01 0

.01 0

.05 0.00 0 .11 0.00 0.00 . 0.09 0.00 0.00 0.10 0.00 0.00 0

.10 0.00 0.00 0.10 0.00 0.00 0.08 0.00 0.00 0.08 0 .00 0.00 , 0

.07 0

.00 0,00 0.07 0.00 0.00 0.10 0.00 0.00 0.12 0.00 0.00 0.20 0.00 

## 0 .00 0.23 0.00 0 .00 020 0.00 0 .00 0.20 0.00 0 .00 0

.26 0

.01 0.00 0.23 0.00 0 .00 020 0 .00 

## 0.00 0

.19 0

.00 0.00 0

.15 0

.00 0.00 0.13 0.00 0 .00 0

.13 0

.00 0.00 0.10 0 .00 0 .00 0

.11 0

.00 0.00 0.09 0.00 0 .00 0.09 0.00 0 .00 0.09 0.00 

## 0.00 0.08 0.00 0.00 0

.08 0

.00 0.00 0

.08 0.00 

## 0 .00 0

.07 0

.00 Total 0 .81 0

.37 2.76 0 .00 3.94 Total (year-to-date) $3:70 3 .12 18.66 17.02 122 .50 Note: 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP. 12. 2007 1 :45PM DEQ/PCD/AWMB . NQ, 493 P, 22

CONOCOPHILLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT



## FOR MONTANA AIR QUALITY BUREAU

Sep-06 --_--TONS of Sa2 --- H2S_P_PM Boiler Sulfur in Fuel Date Fuel Gas House Furnaoes FCC Flare Total Lb1MMbtu(11 Sep 1 9

.60 0

.01 0

.01 0

.05 0

.00 0.07 0 .00 Sep 2 9

.00 0

:01 0

.01 0

.06 0

.00 0

.08 0

.00 Sep 3 10.00 0 .01 0

.01 0

.06 0

.00 0

.08 0

.00 Sep 4 10.34 0 .02 0

.01 0

.06 0

.00 0

.09 0

.00 Sep 5 10.05 0 .03 0

.01 0

.07 0

.00 0

.11 0

.00 Sep 6 10

.00 0

.03 0

.01 0

.10 . 0

.00 0

.14 0

.00 Sep 7 9

.17 0_04 0 .01 0

.12 0

.00 0

.17 0

.00 Sep 8 9

.88 0

.03 0

.01 0

.15 - .0.00 0 .19
. 0

.00 Sep 9 9

.58 0

.03 0

.01 0

.15 " 0:00 0 .19 0

.00 Sep 10 9

.23 0

.03 0

.01 0

.16 0

.00 0

.20 0

.00 Sep 11 9

.62 0

.02 0

.01 0

.18 0

.00 0

.21 0

.00 Sep 12 9

.02 0

.02
. 0,01 0 .16 0

.00 0

.19 0

.00 Sep 13 9

.71 0

.01 0

.01 0

.15 0

.00 0

.17 0

.00 Sep 14 9

.06 0

.01 0

.01 0

.13 0

.00 0-15 0 .00 Sep 15 9

.31 0

.01 0

.01 0

.12 0.00 0.14 0 .00 Sep 16 9

.04 0

.00 0

.01 0

.10 0.00 0 .11 0

.00 Sep 17 8

.59 0

.00 0

.01 0

.08 0.00 0 .09 0

.00 5ep 18 8.89 0 .01 0

.01 0

.08 0.00 0 .10 0

.00 Sep 19 8.79 0 .01 0

.01 0

.05 0

.00 0

.10 0

.00 Sep 20 8.72 0 .00 0

.01 0

.09 0

.00 0

.10 0

.00 Sep 21 9.22 0 .01 0

.01 0

.09 0

.00 0

.11 0

.00 Sep 22 8.91 0 .00 0

.01 0

.10 0

.00 0

.11 0

.00 Sep 23 9.32 0 .03 0

.01 0

.10 0

.00 0

.14 0

.00 Sep 24 14

.41 0

.07 0.02 . 0 .12 0

.00 0

.21 0

.00 Sep 25 9.33 . 0 .06 0

.01 ' 0

.12 0

.00 0

.19 0

.00 Sep 26 7.90 0 .04 0

.01 0

.13 0

.00 0

.18 0

.00 Sep 27 7.28 0 .00 0

.01 0

.12 0

.00 0

.13 0

.00 Sep 28 7.22 0 .00 0

.01 0

.13 0

.00 0

.14 0

.00 Sep 29 7.73 0 .00 0

.01 0

.16 0

.00 0

.17 0

.00 Sep 30 7.94 0 .01 0

.01 0

.16 0

.00 0

.18 0

.00 Total 0 .54 0

.31 3.39 0 .00 4

.24 Total (year-to-date) 84,24 3.43 22 .05 17 .02 126 .74 Notes: 1 . Sulfur in gas and oil fuels per MMbtti's HHV .

## SEP. 12. 2007 1 ; 46PM DEQ/PCD/AWMB N0 . 493 P. 23

CANOOOPHIILLiP3 

## BILLINGS REFINERY SULFUR DIO)UDF- EMISSIONS REPORT

FOR 

## MOKTANAAIR QUALITY BUREAU

Oct-06 

## EC~~~E, FEB 0 1 2007 MTDept Envirorujionta
. ULaNry Pemtittin9 & Compliance Divison Nr ResourDea management Bureau

.r~~

.----- TONS of $02- H2$ PPM SO-liar Sulfur in Fuel Date Fuel Gas House Furnac~ FCC Flare To al LbIMMbtu_(1) Oct 1 8.78 0 .05 0

.01 0

.25 0

.00 0

.31 0

.00 Oct 2 8.80 0 .05 0

.01 0

.17 0

.00 0

.23 0

.00 Oct 3 8.75 0 .05 0

.01 0

.15 0

.00 0

.21 0

.00 Oct 4 . 8

.8`1 0

.06 0

.01 0

.14 0

.00 0

.21 0

.00 Oct 5 . 9

.02 0

.05 0

.01 0

.13 0

.00 0

.19 0

.00 Oct 6 9

.50 0

.03 0

.01 0

.16 0

.00 0

.20 0

.00 Oct 7 8,57 0 .01 0

.01 0

.12 0

.00 0

.14 0

.00 Oct 8 . 8.73 0 .01 0

.01 . 0

.11 0

.00 . 0

.13 0

.00 Oct 9 8

.66 ' 0

.01 0

.01 0

.08 0

.0~0 ' 0

.10 0

.00 Oct 10 9.34 . 0 .01 0

.01 0

.09 0

.00 0

.11 0

.00 

## Oct 11 8.83 0.01 0.0" . 0.10 0 .00 0.12 0.00 OCt 12 8.96 0 .01 0

.01 0

.11 0

.00 0

.13 0-00 Oct 13 9

.36 0

.01 0

.01 0

.11 0

.00 0

.13 0

.00 Oct 14 8

.73 0

.01 0

.01 0

.11 0

.00 0

.13 0

.00 Oct 9 5 15.02 0 .01 0.02 0 .14 0

.00 0

.17 0

.00 Oct 16 9.01 0 .01 0

.01 0

.12 0

.00 0

.14 0

.00 

## Oct 17 8.82 0

.01 0

.01 0 .15 0.00 0

.17 0 .00 Oct 18 9.10 0.24 0 .01 0.12 0.00 0 .37 0

.01 Oct 19 9.08 0.60 0.01 0.12 0.00 0.73 0.03 Oct 20 9.25 0 .62 0

.01 0

.11 0,00 0 .74 0

.03 Oct 21 8.77 0 .65 0

.01 0

.11 0

.00 0

.77 0

.04 Oct 22 8

.11 0.73 0.01 0.11 0.00 0.85 0.04 Oct 23 8

.94 0

.75 0

.01 0

.11 0

.00 0

.87 0

" 04 04 24 8.93 0 .75 0.01 , 0 .10 0.00 0.86 0.04 Oct 25 9.26 0 .51 0.01 0 .10 0

.00 0.62 0.03 Oct 26 8

.49 0

.54 0

.01 0

.10 0

.00 0.65 0 .03 Oct 27 8.58 0.53 0.01 0.13 0.00 0.67 0 .03 Oct 28 21 .27 0 .57 0.02 0 .14 0

.14 0

.87 0

.03 Oct 29 9.22 0.54 0.01 0 .13 0.00 0.68 0 .03 Oct 30 9.64 0.47 0_01 0 .16 0.00 0 .64 0 .03 Oct 31 8.99 0.46 0.01, 0.15 0.00 0.62 0 .03 Total 8.34 0 .33~ 3.94 0 .14 12.75 Total (year-to-date) 92 .56 3.76 25.99 17 .16 139 .49 Notes: 1 . Sulfur in gas and oil fiueis per MMbtu's HHV .

## SEP, 12. 2007 1 ; 4bPM DEQ/PCD/AWMB N0, 493 P. 24

.

CONOCOPIALIPS

BILUNGS REFINERY SULFUR b10)(IDE EMISSIONS REPORT

FOR . MONTANAAIRQUALITY BUREAU

NOV-06

- TONS of .S02----------~---------~- _H2S PPM Boiler Date Fuel Gas House Furnaces FQC Nov 1 13

.3 0

.47 0

.01 0

.16 Nov 2 13.6 0 .44 0

.01 0

.18 Nov 3 13

.6 0

.43 0

.01 0.12 Nov 4 13.9 0 .45 0

.01 0

.08 Nov 5 14.7 0 .41 0

.01 0

.04 Nov 6 14.6 0 .47 0

.01 0

.10 Nov 7 15.2 0 .59 0

.01 0

.13 Nov 8 . 13.9 0 .60 0

.01 0

.09 Nov 9 14.4 0 .59 0

.01 0

.1 3 

## Nov 10 14.8 0.70 0 .01 0

.13 Nov 11 14

.0 0

.62 0

.01 0

.10 Nov 12 12.0 0 .73 0

.01 0

.10 Nov 13 12.0 0 .65 0

.01 0

.05 Nov 14 13.1 0 .57 0

.01 0

.04 

## Nov 15 12.4 0.59 0.01 0.05 Nov 18 11 .4 0 .58 0

.01 0

.07 Nov 17 15.5 0 .59 0

.01 0

.05 Nov 18 20

.4 0

.93 0

.02 0

.08 Nov 19 24.0 0 .86 0-02 0 .12 Nov 20 13.7 0 .98 0

.01 0

.11 Nov 21 13.7 0 .93 0

.01 0

.13 Nov 22 13.3 0 .88 0

.01 0

.16 Nov 23 12.4 0 .52 0

.01 0

.17 Nov 24 13.1 0 .50 0

.01 0

.16 Nov 25 12

.2 0

.45 0

.01 0

.14 Nov 26 12

.5 0

.43 0

.01 0

.13 

## Nov 27 12

.4 0.49 0.01 0.12 Nov 28 11 .4 0.62 0 .01 0.13 Nov 29 11 .3 1 .29 0.01 0.13 

## Nov 30 10

.3 1 .20 0.01 0.10 Sulfur in Fuel Flare Total LbIMMbtu(1) 0 .00 0

.64 . 0

.03 0 .00 0

.63 0

.03 0 .00 0

.56 0.03 0 .00 0

.54 0

.03 0 .00 0

.46 0

.03 0 .00 0

.58 0

.03 0 .00 0

.73 0

.03 0 .00 0

.70 0

.04 0 .00 0

.73 0

.04 0 .00 0

.84 0

.04 0 .00 0

.73 0

.04 0 .00 0

.84 0

.04 0 .02 0

.73 0

.04 0 .00 0

.62. 0

.03 0 .00 0

.65 0

.04 

## 0 .00 0 .66 0 .04 0 .00 0

.65 0

.04 

## 0 .00 1 .03 0

.06 0,00 1 .00 0 .05 0.000 1 .10 0.06 

## 0 .00 1 .07 0.06 0.00 1 .05 0.05 0 .00 0

.70 0

.03 0.00 0

.67 0.03 0 .00 0

.60 0

.03 0.00 0.57 0.02 0 .00 0

.62 0

.03 0.00 0

.76 0.04 0 .02 1 .45 0 .07 

### 0 .00 1 .31 0.06
Total 19 .53 0

.37 3.29 0 .04 23.23 Total (year-to-date) 112.11 4 .13 29.28 17 .20 162 .72 Notes: 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP .12.2007 1 :47PM DEQ/PCD/AWMB N0.493 P. 25

CONOCOPHILLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIRQUALITY BUREAU

Dec-06 --TONS of S02-- H2S PPM _Boiler " Date Fuel Gas House Fum s Dec 1 9.31 1 .17 0 .01 0

.09 Dec 2 9

.91 1 .14 0 .01 0

.07 Dec 3 ') 0

.43 0

.89 0

.01 0

.13 Dec 4 12.90 0 .91 0

.01 0

.20 Dec 5 33.39 1 .13 0.04 0 .07 Dec 6 12.88 0 .97 0

.01 0

.12 Dec 7 48

.77 1 .00 0 .05 0

.14
~ Dec $ 19.20 1 .12 - 0 .02 0

.12 Dec 9 10:99 1 .12 0 .01 0

.11 Dec 10 11 .00 1 .12 0 .01 0

.11 Dec 11 11 .06 1 .25 0 .01 0

.07 Dec 12 30.58 1 .18 0 .03 0

.05 Dec 13 9

.27 1 .01 0 .01 0

.05 Dec 14 9.55 1 .02 0 .01 0

.05 Dec 15 10

.82 0

.98 ' 0

.01 0

.09 Dec 16 10.30 1 .10 0 .01 0

.11 Dec. 17 9.24 1 .05 0 .01 0

.14 Dec 18 9

.28 1,01 0 .01 0

.16 Dec 19 10.01 1 .04 0 .01 0

.17 Dec 20 9

.22 1 .13 0 .01 0

.17 Dec 21 9

.84 1 .14 0 .01 0

.17 D .ec 22 9

.05 1 .33 0 .01 0

.16 Dec 23 8.97 1 .30 0 .01 0

.15 Dec 24 8.97 1 .32 0 .01 , 0

.15 Dec 25 9.02 1 .33 0 .01 0

.14 Dec 26 9.20 1 .34 0 .01 0

.13 Dec 27 9.53 1 .36 0 .01 0

.13 Dec 28 10.07 1 .37 0 .01 0

.14 Dec 29 9

.57 1 .39 0 .01 0

.15 Dec 30 9

.21 1 .40 0 .01 0

.15 Dec 31 29.71 1 .42 0 .03 0

.15 Sulfur in Fuel FCC Flare Total LbIMMbtu.(1~

0 .00 1 .27 0 .06 0 .00 1 .22 0 .07 0 .00 1 .03 0 .05 0 .00 1 .12 0 .06 0 .00 1 .23 0 .07 0 .00 1 .10 0 .06 0 .00 1 .19 0 .06 0 .00 1 .26 0 .07 0 .00 1 .24 0 .07 0 .00 1 .24 0 .07 0,00 ' 1 .34 0 .07 0 .00 1 .26 0 .06 0 .00 4 .07 0 .05 0 .00 1 .08 0 .05 0 .00 1 .08 0 .05 0 .00 1 .22 0 .06 0 .00 1 .20 0 .05 0 .00 1 .18 0 .05 0 .00 1 .22 0 .06 0 .02 1 .32 0 .06 0 .00 1 .32 0 .07 0 .00 1 .49 0 .06 0 .00 1 .45 0 .06 0 .00 1 .48 0 .06 0 .00 1 .48 0 .06 0 .00 1 .48 0 .06 0 .00 1 .50 . 0 .06 0 .00 1 .52 0 .06 0 .00 1 .55 0 .06 0 .00 1 .56 0 .05 0 .00 1 .59 0 .06 Total 36.04 0.43 ~ 3 .83 0

.02 40.32, Total (year-to-date) 148.16 4 .56 33

.11 17 .22 203.04 Notes : 9- Sutfur in gas and oil fuels per MMbtu's HHV .

## SEP. 12. 2007 1 :47PM DEQ/PCD/RWMB N0.493 P, 26

CONOCOPHILLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR 

## MONTANAAIRQUALITY BUREAU

Jan-07 ------TONS of 802--- H2S PPM Boiler 8ulfur in Fuel Date Fuel Gas House Fur_naces FCC Flare Total LbIMMbtu(1) Jan 1 ' 11 .20 1 .43 0 .01 0

.16 Jan 2 9

.68 1 .30 0 .01 0

.16 Jan 3 10

.06 1 .17 0 .01 0

.14 Jan 4 8

.42 1 .34 0 .01 0

.11 Jan 5 7.99 1 .28 0 .07 0

.11 Jan 6 8

.91 1 .36 0 .01 0

.09 Jan 7 9

.21 1-09 0 .01 0

.11 Jan 8 10.02 1 .12 0 .01 0

.11 Jan 9 9

.42 1 .00 0 .01 0

.11 Jan 10 9

.76 1 .15 0 .01 0

.12 Jan 11 9

.78 1 .14 0 .01 0

.94 Jan 12 8

.73 1 .23 0 .01 0

.15 Jan 13 9

.17 1 .34 0 .01 0

.15 Jan 14 18.90 1 .82 0 .01 0

.12 Jan 15 9

.76 1 .51 0 .01 0

.95 Jan 16 8

.85 1 .30 0 .01 0

.14 Jan 17 9

.09 0

.49 0

.01 0

.13 Jan 18 9

.58 0

.71 0

.01 0

.14 Jan 19 9

.27 0

.69 0

.01 0

.17 Jan 20 9,62 0 .67 0

.01 0

.17 Jan 21 10.52 0 .73 0

.07 0

.16 Jan 22 8

.8"I 0

.69 0

.01 0

.19 Jan 23 9

.66 0

.67 0

.01 0

.16 Jan 24 12

.86 0

.95 0

.91 0

.08 Jan 25 10

.10 1 .34 0 .01 0

.05 Jan 26 8.92 1 .56 0 .01 0.05 Jan 27 8

.26 1 .58 0 .01 0

.06 Jan 28 9.08 1 .48 0 .01 0

.12 Jan 29 8.69 1 .62 0 .01 0

.14 Jan 30 8

.74 1 .47 0 .01 0

.15 Jan 37 9.47 1 .38 0 .01 0

.15 0

.00 1 .60 0 .06 0 .00 1 .47 0 .06 0 .00 1 .33 0 .07 0 .00 1 .46 0 .08 0 .00 1 .39 0 .07 0 .00 1 .46 0 .08 

## ~ 0.00 1 .21 0

.06 0.00 1 .25 0.06 

### 0 .00 1 .13 0 .05 0.00 1 .28 0 :06 0 .00 1 .29 0 .06 0.00 1 .39 0 .07 

## 0.00 1 .50 0

.06 0 .00 1,J5 0 .90 0 .00 1 .67 0 .08 0 .00 1 .45 0 .08 0 .00 0

.63 0

.03 0 .00 0

.86 0

.04 0 .00 0.87 0 .04 0 .00 0.84 . 0 .04 0 .00 0

.90 0

.04 0 .00 0

.88 0

.04 0 .00 0

.85 0

.04 

## 0.00 1 .04 0

.05 0 .00 1 .40 0 .07 0 .00 1 .61 0 .08 0_00 1 .64 0 .08 0 .00 1 .60 0_08 0 .00 1 .77 0 .08 0 .00 1 .63 0 .08 0 .00 1 .54 0 .07 Total 36.80 0_28 4 .00 0

.00 40.88 Total (2007 year-to-date) 36.60 0 .28 4

.00 0

.00 40.88 Notes: 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP,12,2007 1 ;47PM DEQ/PCD/AWMB

CClNC?COPHILLIPS BILLINGS REFINERY SULFUR DlOXiDB EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Feb-07 

## N0, 493 P, 27

-----r------- . .------TONS of S02-----~------------~---- H2S PPM 8oiter _$ulfur in-Fuel pate Fuel s ouse Furnaces FP_C Flare Total LbIMMbtul1l Feb 1 11 .41 1 .53 0 .01 0

.12 Feb .2 8

.91 1 .57 0,01 0 .11 Feb 3 8.64 1 .54 0 .01 0

.12 Feb 4 10.57 1 .43 0 .01 0

.11 Feb 5 13.52 1 .44 0,01 0 .13 Feb 6 11 .49 1 .22 0 .01 0

.13 Feb 7 13.0 .3 1,26 0 .01 0

.14 Feb 8 11 .68 1 .26 0 .01 4.15 Feb 9 11 .43 1 .36 0 .01 0

.15 Feb 10 11 .51 1 .25 0,01 0 .15 Feb 11 11 .46 1 .28 0 .01 0

.13 Feb 12 11 .22 1 .35 0 .01 0

.07 Feb 13 14.36 1 .37 0 .02 0

.08 Feb 14 14

.18 1 .28 0 .01 0

.10 Feb 15 9.65 1 .14 0 .01 0

.11 Feb 16, 11 .98 0 .82 0

.01 0

.13 Feb 17 11 .35 0 .97 0

.01 0

.13 Feb 18 11 .17 1 .02 0 .01 0

.13 Feb 19 9

.19 1 .28 0 .01 0

.13 Feb 20 10

.38 1 .12 0 .01 0

.12 Feb 21 10.36 1 .10 0 .01 0

.08 Feb 22 91 .12 1 .04 0 .01 0

.09 Feb 23 10.23 1,14 0 .01 0-10 Feb 24 10.60 1 .24 0-01 0 .12

. Feb 25 10.90 1 .31 0 .01 0

.13 Feb 26 10.54 1 .34 0.01 . 0.13 Feb 27 10

.60 1 .35 0.01 0.15 Feb 28 9.76 1 .33 0.01 0.14 0,00 1 .66 0 .08 0 .00 1 .69 0 .09 0 .00 1 .66 0-10 0 .00 1 .55 0 .09 0 .00 1 .59 0 .08 0 .00 1 .36 0 .06 0 .00 1 .41 0-06 0 .00 1 .43 0 .07 0 .00 1 .53 0 .07 0 .00 1 .44 o.07 0 .00 1 .42 0 .07 0 .00 1 .43 0 .07 0 .00 1 .47 0 .07 0 .00 1 .39 0 .07 0 .00 1-26 0 .06 0 .00 0

.96 0

.05 0 .00 -1 .11 0 .05 0 .00 1 .16 0 .06 0 .00 1-42 0 .07 O .OU 1 .25 0-06 0 .00 1-19 0 .06 0 .00 1 .15 0 .06 0 .00 1 .25 0 .06 0 .00 1 .36 0 .07 

## 0 .00 1 .45 0

.07 0.00 1 .48 0 .07 0 .00 1 .51 0 .07 0 .10 1 .58 0 .07 Monthly Total 35.37 0 .33 3.37 0.10 39.17 Totaf (year-to-date) 71 .97 0 .61 7 .37 0-10 $0.05 Notes- 1 - Sulfur in gas and oil fuels per MMbtu's HHV
.

## SEP.12 .2007 1 :4$PM DEQ/PCD/AWMB

CONOCGPHILI .KPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR OIUAUIY BUREAU

Mar-07 -r---TONS of 502---~----T------ 

## N0.493 P. 2$

H PPIU Baler Sulfur in Fuel Date Fue1

Gas House Furnaces FCC Flara Total LblMMbtu( } Mar 1 9

.78 1 .37 0 .01 0

.13 0,08 1 .59 0,07 Mar 2 9

.49 1 .40 0 .01 0

.13 0

.43 1 .97 0 .08 Mar 3 12

.27 1 .42 0 .01 0

.14 0

.00 1 .57 0,08 Mar 4 10

.32 1 .33 0 .01 0

.15 0

.00 1 .49 0 .07 Mar 5 11 .53 1 .27 0 .01 0

.15 0

.02 1 .45 0 .07 Mar 6 12

.63 1 .27 0 .01 0

.16 0

.32 1 .76 0 .07 Mar 7 10.21 1 .26 0 .01 0

.15 0

.12 1 .54 0 .07 Mar 8 9,65 1 .13 0 .01 0

.13 0

.00 1 .27 0 .08 Mar 9 10

.22 0

.95 0

.01 0

.18 0

.00 . 1 .14 0,05 Mar 10 9

.58 0_89 0,01 0 .18 0

.00 1 .06 0 .08 Mar 11 10

.03 0

.90 0

.01 0

.18 0

.00 1_09 0 .07 Mar 12 9

.70 0_92 0,01 0 .20 0

.00 1 .13 0 .05 Mar 13 10

.18 0

.95 0

.01 0

.16 0

.00 1 .12 0 .05 Mar 14 10

.35 1 .23 0 .01 0

.13 0

.00 1 .37 0 .06 Mar 15 14

.05 1,23 0 .01 0

.18 0.00 1 .42 0 .06 Mar 16 16.04 1 .06 0,01 0 .20 0

.00 1 .26 0_06 Mar 17 11 .56 1 .14 0 .01 0

.19 0-DO 1 .34 0 .07 Mar 18 12.59 1-34 0 .01 0

.17 0

:00 1 .52 0 .08 Mar 19 9' .63 1 .19 0,01 0 .17 0

.00 1 .37 0 .07 Mar 20 9

.24 1 .14 0 .01 0

.15 0

.00 4 .30 0,07 Mar 21 9

.79 0

.39 0

.01 0

.15 0

.00 0_54 0 .02 i1Aar 22 7

.13 0

.32 0_01 0 .04 0,00 0 .37 0_02 Mar 23 6

.65 0_45 0 .00 0

.00 0

.00 0

.45 0

.03 Mar 24 6.73 0 .44 0

.00 0

.00 0

.70 1 .15 0 .03 Mar 25 5.70 023 0 .00 0

.00 0

.00 023 0- .01 Mar 26 4

.59 1 .09 0 .00 0

.00 0

.70 1 .80 0-07 Mar 27 2.87 1 .21 0 .00 0

.00 2.59 3.81 0 .10 Mar 28 2.63 1 .02 0 .00 4

.00 10.75 11 .77 0 .09 Mar 29 2.35 1 .29 0.00 0 .00 0

.00 129 0 .13 Mar 30 2

.58 1 .17 0 .00 0.00 0.00 1 .17 0 .14 Mar 31 6

.89 1 .45 0 .00 0

.00 0

.00 1 .45 0 .17 Total 32.43 0 .24 3.43 15.77 51 .87 Total (year-to-date) 104.40 0 .85 10.80 'l5-87 131 .92 Notes, 1 . Suffur in gas and oil fuels per MMbtu's HHV .

## SEP, 12. 2001~ 1 :54PM ~ DEQ/PCD/AWMB 

# STATE OF MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY PERMITTING AND CONPLIANCE DIVISION AM RESOURCES MANAGEMENT BUREAU

Box 200901 Helena, MT 59620 Phone (406) 444-3490 Fax 4 (406) 444-1499


### DATE: 

# ps~~~ a"7

Total Namber of Pages, including cover sheet : 

# To: ~~ (3a3 3/2- G'-437 

# 115 . A-/'A- ~e2~ S' 4- 44-d~'k~ Pra~PAIPL

FAX NO . : -3d 3 -- -3 1 ; --- ~ 467 FROM, 

# S -,-ICO N0

. 494 P. 1



# ORG # :5-/-17,* COMMENTS:
If L__j 

# r-~ " 1v.~ .~~. .~.~.~ vttly3 rs --~o~ 1rt .ai/ & ~, x,,~ a7 G_larmblsupportlFormsladministrativelfaxgi7eet .doo

## SEP.12.2007 1 :55PM DEQ/PCD/RWMB 

## N0 . 494 P. 2

H2PM

. Boiler Sulfur in Fuel Date Fuel Gas House Furnaces FCC BEE Total LbIMMbtu-(l) Apr 1 2

.98 1 .25 0 .00 0

.00 Apr 2 4

.55 .1 .13 0 .00 0

.00 Apr 3 6

.32 1 .33 0 .00 , 0

.00 Apr4 5

.11 0

.79 0

.00 0

.00 Apr 5 0

.00 0

.09 0

.00 0

.00 Apr 6 0

.00 0

.08 0

.00 0

.00 Apr 7 0

.00 0

.09 0

.00 0

.00 Apr 8 0

.00 0

.08 0

.00 0

.00 Apr 9 0

.00 0

.03 . 0

.00 0.00 Apr 10 0

.00 0

.00 0

.00 0

.00 Apr 11 0

.00 0

.00 0

.00 0

.00 Apr 12 0

.00 0

.00 0

.00 0

.00 Apr 13 0

.00 0

.00 0

.00 0

.00 Apr 14 0

.00 0

.00 0

.00 0

.00 Apr 15 0

.00 0

.00 0

.00 0

.00 Apr 16 0

.00 0_00 0 .00 0

.00 Apr 17 ~0.00 0 .00 0

.00 0

.00 Apr 18 9.30 0 .00 0

.00 0

.00 Apr 19 3.79 0 .00 0

.00 0

.00 Apr 20 5.18 0 .01 0

.00 0

.00 Apr21 6.25 0 .00 0,00 0 .00 Apr 22 6

.88 . 0

.01 0

.00 0

.00 Apr 23 6

.20 0

.01 0

.00 0

.00 Apr 24 5.84 0 .00 0

.00 0

.00 Apr 25 5.43 0 .00 0

.00 0.00 Apr 26 4

.92 0

.00 0

.00 0

.00 Apr 27 4

.48 0

.74 0

.00 0

.02 Apr 28 5.29 1 .37 , 0 .00 0.12 Apr 29 5.35 1 .27 0 .00 0

.05 Apr 30 5.31 1 .15 0 .00 0.17 19 

## 14

coNOCOPtiILUP3 BILUNGS REFINERY SULFUR DIOlC1DIE EMISSIONS REPORT

FOR MONTANAAIRQUALITY BUREAU

Apr-07

_ - TONS of S02--------~-
0_0a 1 .25 0 .19 0 .00 9 .13 0 .21 0 .00 1 .33 0 .22 0 .00 0

.79 0

.18 0 .00 0

.09 0

.03 0 .00 0

.08 0

.14 0 .02 0

.11 0

.00 0 .00 0

.08 0

.00 0 .00 0.03 0 .00 

## 0 .00 0

.00 0

.00 0.00 0

.00 0.00 

### 0 .00 0.00 0 .00 

## 0.00 0.00 0.00 0.00 0.00 0.00 0 .00 0

.00 0

.00 

### 0 .00 0.00 0.00 0 .00 0

.00 0

.00 

## 0 .00 0

.00 0.00 0 .00 0

.00 0

.00 0.00 0

.01 0.00 

## 0.00 0.00 0.00 0.00 0.01 0.00 0 .00 0

.01 0

.00 0 .00 0

.00 0

.00 0.00 0.00 0.00 0 .00 0

.00 0

.00 0.00 0

.76 0.18 0.00 1 .49 0.21 0 .00 1 .32 0 .19 0.00 1 .32 0.20 Total 9.43 0 .00 0.36 0.02 9.81 Total (year-t0-date) 113.83 0.85 11 .16 15 .89 141 .73 Notes : 1 . Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP, 12. 2007 1 :55PM DEQ/PCD/AWMB N0, 494 P, 3



## caNOCOPHII .uPs BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT



### FOR MONTANAAIR QUALITY BUREAU

May-07



## -- .--_-----~----------TOrvs of sa2-----~--____ H2S PPM Boiler Sulfur in Fuel Date Fuel Gas House Furnaces FCC Fl re Total LbIMMbtu(1) May 1 11 .71 0 .39 0

.01 0

.06 0

.00 0

.46 0

.01 May 2 11 .93 0 .23 0

.01 0

.04 5

.40 5.68 0 .01 May 3 10

.59 0

.75 0

.01 0

.05 0

.00 0

.81 0

.01 May4 10

.15 0

.33 0

.01 0

.04 20.40 20 .78 0

.01 May 5 11 .32 0 .14 0

.01 0

.08 0

.00 0,23 0 .01 May 6 9

.96 0

.10 0

.02 0

.16 0

.00 0

.28 0

.01 May 7 11 .04 0 .06 0

.02 0

.18 15.70 15.98 0 .01 Maya 10.12 0 .05 0

.01 0

.18 0

.Qo 0.24 0 .01 May 9 10.31 0 .07 0

.01 0

.40 0

.00 0

.48 0

.01 May 10 10

.12 0

.06 0

.01 0

.50 0

.00 0

.57 0

.01 May 11 7.93 0 .06 0

.01 0

.57 0.00 0 .64 0

.01 

## May 1 2 9.23 0.08 0 .02 0.56 0.00 0.66 0.01 May 13 8

.68 0.06 0.01 0.15 0.00 0.22 0.01 May 14 9

.38 0.04 0.01 0.24 0.00 0.29 0.01 May 15 9.40 0 .07 0

.01 0

.13 0

.40 0

.21 0

.01 May 16 14

.36 0

.06 0

.01 0

.10 0.00 0.17 0.01 May 17 18

.87 0

.04 0

.01 0

.07 0

.00 0

.12 0

.01 

## May 18 8.01 0.02 0.01 0.07 0.00 0.10 0.00 May 19 16.00 0.00 0 .01 0

.08 0

.00 0.09 0 .00 May 20 9.07 0 .00 0

.02 0.09 0.00 0.11 0.00 May 21 12

.91 0

.00 0

.01 0

.08 0

.00 0

.09 0

.00 May 22 , 8

.56 0

.01 0

.01 0

.05 3.02 3.09 0 .00 May 23 8

.17 0.00 0.09 0.05 0.0 .0 0

.06 0.00 May 24 8

.22 0

.01 0

.01 0

.05 0

.00 0

.07 0

.00 May 25 44.25 0.00 0.01 0 .05 3.00 3.06 0.00 May 26 9,14 0.01 0 .02 0

.04 0

.00 0.07 0 .00 May27 8

.90 0

.03 0

.01 0

.04 0

.00 0

.08 0

.00 May 28 9

.73 0.02 0.01 0.03 0.00 0.06 0.00 May 29 8

.65 0

.01 0

.02 0

.03 0

.00 0_06 0 .00 May 30 8

.51 0

.00 0.01 0 .04 0

.00 0

:05 0

.00 May 31 9.87 0 .00 0

.01 0

.04 0

.00 0

.05 0

.00 Total 2 .70 0

.37 4

.25 Total (year-t0-date) 116.53 1 .22 15.41 47.52 54.84 63.41 196.57 Notes : 1 . Sulfur in gas and oil fuels per MMbtu's HHY` .

## SEP, 12. 2007 1 ; 55PM DEQ/PCD/AWMB N0, 494 P. 4

CONOCOPHILLIPS BILLINGS REFINERY SULFUR DIOXIDE EMISSIONS REPORT

FOR MONTANAAIR QUALITY BUREAU

Jun-07 --------------TONS of S02-,-______ H2S PPM Boiler $utfur in Fuel Date Fuel Ga_$ House Furnaces FCC Flare Total LbIMMlrtu(1) Jun 1 15.70 0 .01 0

.00 0

.05 Jun 2 10,99 0 .01 0

.00 0

.05 Jun 3 9

.37 0

.01 0

.00 0

.05 Jun 4 9

.39 0

.01 0

.00 0

.06 Jun 5 9

.66 0,01 0 .00 0

.06 Jun 6 9

.35 0

.00, 0

.00 0

.07 Jun 7 9.16 0 .01 0

.00 0

.07 Jun 8 8.76 0 .01 0

.00 0

.09 Jun 9 9

.05 0

.00 0

.00 0

.10 Jun ~10 9

.19 0

.00 ~0.00 0 .10 Jun 11 12.49 0 .00 0

.00 0

.09 Jun 12 8

.64 0

.01 0

.00 0

.08 Jun 13 9

.26 0

.06 0

.00 0

.08 Jun 14 ,9.89 0 .09 0

.00 0

.07 Jun 15 9.72 0 .05 0

.00 0,06 Jun 16 11 .08 0 .06 0

.01 0

.05 Jun 17 11 .40 0 .05 0

.01 0,05 Jun 18 9,52 0 .04 . 0

.01 0

.05 Jun 19 9

.94 0

.05 0

.01 0

.06 Jury 20 11 .35 0 .09 0

.01 0

.06 Jun 21 20.13 0 .06 0

.02 0

.05 Jun 22 21 .08 0 .09 0

.02 0

.08 Jun 23 11 .66 0 .12 0

.01 0,09 Jun 24 10.72 0 .11 0

.01 , 0

.94 Jun 25 11 .66 0 .14 0

.01 0

.11 Jun 26 24

.75 0

.12 0

.03 0,05 Jun 27 11 .50 0 .07 0

.01 0

.04 Jun 28 11 .56 0 .01 0

.01 0

.07 Jun 29 23.59 0 .0-1 0

.03 0

.08 Jun 30 1 11,08 0_00 0 .01 0

.11 0

.00 0

.06 0

.01 0 .00 0

.06 0

.01 

## 0.00 0

.06 0

.00 0 .00 0

.07 0

.00 0.00 0

.07 0_00 0 .00 0

.07 0

.00 0 .00 0

.00 0

.00 0 .00 0

.10 0

.00 0 .00 0

.90 0.00 0 .00 0

.10 0

.00 0 .00 0

.09 0

.01 0 .00 0.09 0.00 0.00 0

.14 0.00 0.00 0

.16 0.00 0.00 0

.11 0.01 0.00 0.12 0.00 0_00 0.11 0.00 0.00 0.10 . 0.00 0 .00 0.12 0.00 0 .00 0

.16 0.00 0.00 0.13 0.00 2.00 2

.19 0

.01 0.00 0.22 0.01 0.00 0.26 0.01 0.00 0.26 0.01 0.00 0.20 0.01 0.00 0.12 0.00 0 .00 0-09 0 .00 0.00 0

.12 0

.00 0.00 0,12 0 .00 Total, 1 .27 0 .19 2

.17 2

.00 5.63 Total (year-to-date) 117.80 1 .41 17.58 65.41 202_20 Notes: 1, Sulfur in gas and oil fuels per MMbtu's HHV .

## SEP. 12. 2007 1 : 5bPM DEQ/PCD/AWMB N0 . 494 P .- - 5 Refinery Flare Stack SO2 Emissions '(>150#13-hr) for



## Ist Quarter, 2ao5 s02 so2 Date/Time 1bs u~ t6a1` 3-h~r

_ Reason 3l8I05 f5A0 81 .3 - - 318105 16 :00 78.2 318/05 17:00 72 .8 232

.3 Hydracracker Startup 31810S 18:00 80 .7 318105 19-00 83 .0 3/8105 20:00 24.7 788_4 Hydraaracker ftrtup

## SEP.12.2007 1 :56PM ~DEQ/PCD/AWMB N0 .494 P. 6 ack ~ Ref ery re S 02 Emissi,ans ~ .~~f 5~ lh 7rki t t



## 2nd Quarter, 2005 602 s02 DeteITirne _lbsthour lbst3-hour Reason 4111105 6

:00 3

.1 . 4/11/06 7:00 176.7 4/11105 8

:00 471 .3 651 .1 7305 Shutdown 4111105 9

:00 204

.9 4111105 10:00 49.7 4t11105 11 :00 46.3 301 .0 T305 Shutdown 4/11/0518

:00
. 58.1 4/11/05 19

:00 62.3 411110520

:00 62_3 182.7 T305 Shutdown 5/1710518

:00 0

.4 5/'1770519:00 105 .6 5117105 20:00 129.0 235.1 Hydrocracker Startup 511710521 :00 104.2 

## 5/17/05 22:00 106

.6 6/17105 23

:00 83.8 294 .6 Hydrocracker Startup 5/18/05 6

:00 102,1 5118105 7

:00 100

.3 5118105 8

:00 97 .3 299.7 Hydrocracker Startup 5118105 9

:00 111 .5 5116f05 10:00 121,9 511810511 :00 937.5 370 .9 Hydrocracker Startup 5/16/0512

;00 153.1 5118/05 13:00 167_5 519810514

" .'Ot7 164

.1 484.6 Hydrocracker Startup 5f18/05 15:00 167 .2 5/1810516:00 181 .9 511810517

:00 162.1 491 .3 Hydrocracker Startup 5/1810518:00 145.1 5/1810519;00 152_6 511810520:00 160 .7 458

.3 Hydrocracker Startup 5I18/06 21 :00 161 .2 5/18/05 22

:00 163.4 5118105 ,23:00 166.0 490.6 HydroCrdcker Startup 5119/05 0 :00 171 .5 5/19105 1 :00 169 .2 5119105 2:00 1$4_3 505 .0 Hydrpcr'dcker Startup 5119105 3

:00 161,10 5119105 4 :00 179

.4 5119105 5

;0f0- 177

.3 517.7 Hydrocwdcker Startup 5/19105 6

:00 183

.7 6119/05'7

:00 167

.8 5119/05 8:00

. 215.5 567_1 Hydhocracker Startup 5119105 9:00 18318 5/'k9/0510:00 207 .6 511'910511 :00 18'i .4 572.8 Hydrocracker Startup 5/19105 12:00 152.2 5/19/0513

:00 l G2.1 5H9/0514:00 -182 ;0 526

.3 Hydrocracker Startup 5/19/0515:00 200 .7 5/19/0516:00 213,1 5/11310517:00 212.7 626.6 Hydrocracker Startup 5119/0518:00 217.1 5/1910519

:00 192

.8 5119105 20:00 191 .9 601 .8 Hydrocracker Startup 5119105 21 :00 178.9 5/19105 22

:00 202.1 5119105 23

:00 208_0 589 .0 Hydrocracker Startup

## SEP.12.2007 1 :57PM DEQ/PCD/AWMB
_Vb~in,6u'r ' lbsl3,n

ou 

### W201A)s 0:00 201 .e 

## N0 . 494 P. 7

5120105 1 :00 199 .6 5120105 2

:00 208

.0 606

.2 Hydrocraokec Startup 5l20105 3:00 221,5 5I20105 4

:00 292,0 5120105 5 :00 209.4 64 .2.9 Hydrocracker Startup 5120/05 6:00 218.5 ' 5120105 7:00 ,233,6 5120105 8:00 232 .2 684

.2 Hydrocrdcfcer Startup 5120105 9

:00 220

.3 5f20/0510

:00 201 .1 512010511 :00 1937 615 .2 HydrOcr2cker Startup 

## 5/2010512 :00 217.5 512010513:00 294,8 512010814

:00 25_4 537 .7 HydrocMcker Startup

## SEP. 12. 2007 1 ; 57PM DEQ/PCD/AWMB N0 . 494 P. 8 GaonMobil Bfllings Refinery 

## Refinery Flare Stack S02 Emissions (>150#13-hr) for

3rd Quarter, 2005 sox 802 Date/Time Ibs/houl' lbsl3-hiour Reasoh 7/8105 9 :00 0

.3 

## 718/09 10 :00 154_3 718/0511 .-00 157 .6 312.2 HC8L Shutdown 718/05 12

:00 148

.6 7/S/05 13:00 135 .5 71810514

:00 162

.9 446

.2 HCBL Shutdown 7/8/05 15:00 109 .7 7/6/0516:00 96.7 7/8/05 17:00 65.5 271 .9 HCBL Shutdown 7/15i05 0 :00 5.0 7/15/051 :00 100 .0 7/15105 2*00 214 .9 319

.9 HCE3L Startup 7/15/05 3:00 271 .2 7/15/05 4:00 310 .8 7/151055~00 254.6 836 .6 HCBL Startup '

## SEP. 12, 2007 1 :57PM DEQ/PCD/AWMBxQnMobil Billings Refinery N~~ 494 P. 9 Refinery Flare Stack S42 Emissions (>150#13~-hr) for

4rd Quarter, 2005 so2 so2 DatelTirne (bslhour IbsJ3-hour Reason 12J27105 '12

;00 877

.2 1212710513:00 2,008.9 1212710514

:00 2,199.6 5,085 .7 FCC Startup 

## 12127105 15:00 2,269

.3 1212710516

:00 2,031 .6 1212710517 :00 1,001 .8 5,293.8 FCC Startup 12128105 9100 81 .0 12128105 10

:00 147

.6 1212810511 ;00 147 .0 375.7 Blocked drain valve (HF1 vessel D-205C) leak to the flare 121,28/0512

:00 147

.1 12128/05 13:00 146 .3 12l28105 14:00 147,3 440 .7 Blocked drain valve (HF1 vessel D-205C) leak to the flare 1212810515:00 146 .8 12128/05 16:00 147.2 1212810517 :00 147.2 441 .2 Blocked drain valve (HFI vessel D-205C) leak to theflare 12J2810518

:00 147_6 1212810519

:00 147.8 12128105 20:00 147 .9 443

.3 Blocked drain valve (HF1 vessel D-205C) leak to theflare 12128105 21 :00 147 .1 12128/05, 22

:00 147

.4 12128105 23:00 147.4 441 .9 Blocked drain valve (HFI vessel D-205C) leak to the flare 12129105 0

:00 147.7 12129/05 1 :00 147.7 12/29/052

:00 148.3 443 .7 Blocked drain valve (HF 1 vessel D-205C) leek t0 the flare 12129105 3:00 145 .9 12129/054

.00 145.3 12129105 5

:00 145

.5 436_8 Blocked drain valve (HFi vessel D-205C) leak to the flare 12129/05 6

:00 146

.0 12/29/057

:00 144

.3- 12/29105 8

:00 142

.8 433

.1 Blocked drain valve (HFi vessel d-205C) leak totheflare 12/29/05 9

:00 143_5 12/2910510:00 143.9 12129105 11,00 143.6 431 .0 Blocked drain valve (HFI vessel D-205G) leak to the flare

## SEP.12.2007 1 :57PM DEQ/PCD/AWMB 

# Na, 494 P. 10

IbObr~qr IbW3-bo~r .uirua J~O:uv t9Z~9 3171061~6

:00 67.3 I . 3!T/06 17.'~00 64.4 194 .6 HF3 Shutdown 3119106 9

:00 26.6 3/19/06 10:00 224 .8 3/19106 14 :00 242 .9 494

.3 Crude Startup 3119/0612

:00 568.6 3119/0613

: 00 727.0 3/19106 14

:00 629

.1 1,924

.7 Crude Startup 3/19/0615

:00 161 .0 3/19I0618

:00 134

.9 3/19106 77:00 97 .0 392.8 Crude Startup Reason

## SEP. 12. 2007 1 :58PM DEQ/PCD/AWMB N0, 494 P. 11 'EoaonMobif Billings Refinery 

## Refinery Flare Stack S02 5missions (>150#13-hr) for

2nd Quarter, 2046 soz so2 DsCeiTime Ibslhaur Ibs13-hour 415106 6:00 39.1 415106 7 :00 47 .4 4/5/06 8 :00 66_0 152.5 HF1 Startup 4f13106 9

:00 4

.3 4/13/06 10700 5 .5 4113106 11 ;00 312.0 321 .8 Coker Startup 4113106 12:00 153.0 4113106 13

:00 416

.0 4113106 "14

:00 1,127_9 1,696.8 Coker Startup 4113106 15

:00 1,688.3 4113106 16

:00 408

.6 4/13l06 17:00 3.3 2,101 .2 Coker Startup 6/?J0615

;00 36.4 612108 16:00 330 .6 6/2106 17:00 25.3 392.2 FCC and ULEB Upset

### SEP, 12. 2007 1 :58PM DEQ/PCD/AWMB N0, 494 P, 12 Exconl<Aobii Billings Refinery 

## Refinery Flare Stack S02 Emissions (>150#I3-hr) for

3rd Quarter, 2006 s02 s02 DatelTi,me Ibslhour fbsl3-hour Reason 7J29106 9:00 19 .0 7/29106 10

:00 661 .3 7129106 11 :00 11,9 692.3 V-201 and SV-623 Lifted to Flare Dur'rng Process Upset $/311061200 0 .1 8l3110613:00 0,6 8l31106 14:00 1,884.7 1,885.4 G310 due to Pump Loss on T-301 8131106 15

:00 1,723_5 

### 8131105 16:00 1,073.4 8/3110617

:00 87

.2 2,884

.1 G310 due to Pump Loss on T-301 9/21106 21 :00 58.1 9121106 22:00 93.2 " 9121/06 23:00 39.8 191 .1 G312 due to TA Flooding ,

### SEP. 12, 2007 1 :58PM DEQ/PCD/AWMB N0, 494 P, 13 EbconMobil Billings Refinery 

## Refinery Flare Stack S02 Emissions (>150#13-hr) for

4th Quarter, 2006 $02 S02 aataiTimo Ibslhour Ibsl3-hour Reason 

## 1014106 21 ;00 2,7 10/4106 22:00 243.8 10/4l0623:00 2,8 249 .3 Crude Upset 1019/06 21 :00 37 .3 10/9/06 22:a0 6 .7 1019106 23 :00 133.0 177.0 CHUB Startup 10/10/06 0

:00 138

.6 10/10106 1100 136 .1 10910106 2:00 138.6 413.3 CHUB Startup 10/10/06 3100 135.3 10/10/06 4

:00 133.2 10/10106 5:00 131 .7 400 .2 CHUB Startup 10/10/06 6

:00 132

.2 10/10106 7; 00 9.0 10/10106 8

:00 14.8 156 .1 CHUB Startup 10/22/06 3:0D 53.2 10/22105 4

:00 53.2 10/22/06 5:00 53.2 159 .6 FCC Startup 10/22106 6

:00 53.2 10/22/06 7

:00 53:2 10122/06 8100 53 .2 159

.6 FCC Startup 10/22106 9:00 53 .2 10/2210610:00 $3,2 10/22/06 11 :00 53.1 159,4 FCC Startup 10/22/06 12:00 52.7 10/2210613:00 50.1 10122/06 14

:00 667.7 770 .5 FCCStartup 10122/0615:00 2,058.5 10122/0616:00 2,337 .9 10/22106 17 :00 1,491 .9 5,888.2 FCC Startup 10/22/0618:00 61 .3 10122/06 19;00 89.4 10/22/06 20,00 51 .7 202 .4 FCC Startup 10122/06 21 :00 50 .6 10/22/05 22:00 50,7 10/22/06 23:00 57.8 159 .1 FCC Startup 10126/0615

:00 $9.9 10/26/06 16:00 197 .4 10/26/06 17:00 37.6 324 .9 ULEB Shutdown 10/26/0618:00 54.0 10/2F/0619-

.00 21,5.0 10/26106 20:00 138,2 407 .3 ULEB Shutdown 10/26/06 21 :00 106 .4 10126/06 22:00 1,20.6 10126/06 23

:00 42.9 270 .0 ULEB Shutdown 10/30/06 6

;00 95.5 10/30/06 7

:00 90

.4 10/30/08 8

:00 77.6 263.5 SLE5 Shutdown 10/30/06 9

:00 64.9 10/30/0610:00 52 .3 10/30106 11 :00 41 .0 158 .2 SLEB Shutdown

## SEP. 12. 2007- 1 :59PM DEQ/PCD/AWMB N0.494 P. 14 ExaonMobit Billings FlefinM 

## Refine" Flare Stack 502 Emissions (y1bU#13-hr) for

Date!'rir`_ i~ 1/17lOT 9~ :~' . 113dR~0~;~ 

## ' 11~OE0?' ;,~~ , . 1l30'IiX7 ;y ;Q~O 1a~AlO~ :;~~""' 

# 3r4,o~' ;~`

3r1 ~o~~;a 

## 3r1~~;~'a~~ .- A~,,277.1

`0 .5 

## ~'~9r~.a

~~~ .es.7 S02 ibs/3-hour 

## 7st Quarter, 2007

483.5 V-201 Upset 1,834.9 C-311 Malfunction 266 .2 G311 Malfunction 3,370 .2 V-201 Maffunction 279 .3 V-201 Malfunction 1,201 .1 T-201/7-208 Malfunction 

## so2
0 .2 0 .2 483,2 1,6 1.57 .2 1,676 .1 261 .4 ' 1,9 2 .9 

## 1 .s 547.2 "s a~ 761 _5 ; 314i!O~ ;~B~"E 3,/4IO~~tS_i 3/410'~` ~4~ ,. _

N:, . .

1 Reason

## SEP.12.2047 1 :59PM DEQ/PCD/AWMB E,-oconMob7 Billings Refinery 

## N0. 494 P. 15 

## Refinery Flare Stack S02 Emissions (?15o#13-hr) for

2nd Quarter, 2007 soz soz DstaJTime lbslhour Ibsl3-hour Reason 51111078;00 1 .0 5111107 10

:00 478

.3 5/11/0711,00 0 .5 479

.8 C-311 Vibration Malfunction

## SEP.12.2007'r 2 :08PM DEQ/PCD/AWMB 

# STATE OF MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY PERNIITMGANDCOMffLTANCE DIVISION AIR RESOURCES MANAGEMENT $UItEAX .7 Box 200901 Helena, MT 59620 Phone (406) 444-3490 Fax # (406) 444-1499


### DATE: /

;z Eel , ' vC " -? Total Number of Pages, including cover sheet ; TO : 

## N0. 495 P. 1



# u" (20 FAX NO . : 363 -3)~- 4 46f FROM :


# ORG;~: 5/-f7

.¢/

COMMENTS- 

# ('70

# , s:t:f -o

G~larmblsupportlformsladsxtinistrativeVhcsheetdoc 

### J4-
v 

# r 0111u- trio-or"

014- , qi . .e. K110 1~

## SEP,12.2007 2 ;08PM DEQ/PCD/AWMB

CHS 802 SIP REP( T 1"t Qtr . 2005 April 30, 2005 Page 2 

## N0, 495 P, 2

A copy of the written report (dated January 19, 2005) on these exceedarices is included as part of this quarterly SIP report . EXHIBIT A-1, S ECTION $(A)(5)(b)(ii) FLARING EVENTS 

## There were no flaring events this reporting period. EXHIBIT A, SECTIONVA)(1)(e)(ii) OTHER MINOR SOURCES As per the reporting requirements of the above-referenced section, CHS has used "good engineering judgment and appropriate engineering calculations" to attribute approximately 1 .75 tons of S02 emissions to the burning of polymer in the Alkylation Unit Hot Oil Belt Heater . 

## Also, CHS used "good engineering judgment and appropriate engineering calculations" to attribute approximately 1 .82 tons of $Cz emissions to the burning of Unifiner Compressors' Vents in the Splitter Reboiler Heater . EXPLANATORY NOTE : The data for the Zone A SRU stack S02 emissions (see the monthly summary reports for this stack) shows quite a wide variation in emission levels. This is due to~the fact that during burner fuel runs through the Middle Distillate Unifiner (MDU) one of the Sulfur Recovery Units (SRU) is shut down (i .e., placed in hot standby) and bypassed around the Tall Gas Treatment Unit (TCTU)
. This will not be the case after the Ultra Low Sulfur Diesel (ULSD) Unit is on line.

## SEP, 12. 2007 2 :09PM DEQ/PCD/AWMB NO- 495 P, 3

803 Hlghway 272 5 406-628-5200 P .Q Box 909 shsfnaoem Laurff

. MT 59044-0909 

### July 29, 2005 ~=-~A ~M .O ~ 9

. a'rff ."~ 9j

~ . Jim Hughes 

### Air and Waste Management Buxeau Permitting and Compliance Division Departmeat of Environmental Quality Airport IZxdus'tzial Park 1P-9 

### 1371 Rimtop Drive Billings, MT 59105-1978 RE: 2nd Qtr . 2005 SIP Report Dear Mr . Hughes : 

## AUG 0 " (2005 M7 Dept Environme; : ; , ;~uaqy Permitting &Comphar " I piftpn ArResoutaes Management Bureau



### Enclosed please find the SIP reports (written and electronic) for the CHS Inc (CHS) refinery for the 2nd Quarter 2005. Please note that this report -covers the period from April 1, 2005, through June 30, 2005
. 

### There were three flaxing evemts during the reporting period. Each is discussed in the attached report. Date Time Source Tatal S(7z 4122 13 :40 -15 :43 Zone A acid 3351bs 4/22 -4/23 23 :46 - 0:14;

12:37 -1 :22 Zone Aacid gas 3541bs 6/7 12:22- 12 :34 Zone Dacid gas 1595 lbs There was one event that resulted in exceedezxce of 'emission limitations . The eveut is discussed in the attached report . . 

# Date Source Limit Exceeded Total S02 617 Zone D SRU l -hour total 135 617 Zone D SRU I -hour total 179 617 Zone D SRU 3-hour total 319 6I7 Zone D SRU Daily total __ 375

### SEP, 12. 2007 2 :09PM DEQ/PCD/A'NMB

,CtW SO2 SIP REPO

RT
" ~pd Qtr . 2005 ,lulp 29, 2005 Page 2 ' EXHIBIT A-1, SECTION 3fAN5)i'bNfi) FLARING EVENTS There were three flaring events during the reporting period. 

## N0 . 495 P. 4

Zone A Acid Gas on 4122 from13:40 -15 :43 . On Friday, April 22, 2005, flaring o£ acid gas from the Zone A SRU resulted in approximately 335 lbs of SOa emissions. At the time of the incident, the 41 SRU was shut down and the tail gas treatment unit was in the process of being shut down for turnaround . Investigation revealed that the console operator was not aware that the valve to the flare had opened. This resulted in a portion of the amine unit acid gas to be routed to the flare. Zone A Acid Gas on 4122 - 4/23 from24:46 - 0 :14 and 12:3'7 --1 :22

. FromFriday, April 22, 2005, to Saturday, April 23, 2005, flaring of acid gas fromthe Zone A SRU resulted in approximately 354 lbs of SOz emxssions . At the time of the incident, the #1 SRYJ was shut down and the tail gas treatment unit had just been shut down for turnaround. Investigation revealed that the console operator was not aware that the valve to the flare had opened. This resulted in a portion of the amine unit acid gas to be routed to the flare. Zone DAcid Gas on 617 from 12:22 --12:34 : On Tuesday, 7une 7, 2005, flaring of acid gas from the Zone A SRU resulted in approximately 1595 lbs of SOZ emissions. Investigation revealed that the Zone D SRU tripped as a result of the loss of power to the control panel that contains the flame detector for the acid gas burner package. This resulted in the activation of the safety interlock that closes the acid gas feed valve to the SRU on the loss of flame, and diverts acid gas flow

to the ref nery flare. The loss of power to the control panel was caused by the loss of power from

the West Distribution Center (WDC)
. To reduce the likelihood of recurrence, CHS will provide back-up power to the acid gas and incinerator burners, as well as to the appropriate fire-eyes. ' EMiIBIT AZ SECTION 3sA)U e)fi) OTHER MINOR SOURCES Additionally, :in accordance with the requirements of the referenced section, CHS bas used "good engineering judgment and appropriate engineering calculatione' to estimate S02 emissions from

two minor sources, as follows. " Polymer burning in the A .lkylation Unit Hot Oil Belt Heater : 1 .75 Tons S02 Burning of unifiner compressor vents in Splitter Reboiler Heater : 1 .82 Tons SOz

## SEP,12.2007 2 ;lOPM DEQ/PCD/AWMB E'Ii .A E I VE

October 28, 2005
Mr . Jun T3ughes Air and Waste Management Eureau Permitting and Compliance Division Department of Environmental Quality Airport Industrial Park 11?-9 1371 Itimtop Drive Billings, MT 59105-197$ RE : 3rd Qtr_ 2005 Sl~1?P Report Dear Mr. Rughes : MT Dept . Env;ronmenWl Quallty Permliling & Compliant9 Divison Air Resources Management BMW 

## N0.495 P, 5

803 Highway 212 5 406-628-5200 P .O . Styx 909 chsirc.com Laurel, MT 59044-0909

Enclosed please find the SIP reports (written and electronic) for the CHS Inc (CpTS) refioery for the 3rd Quarter 2005. Please note that this report covers the period from July 1, 2005, through September 30, 2005- There were two flaring events during the reporting period. Each is discussed in the attached report Date Time Source Total SU,_ 71710 5 21 :23 -21 :46 Zone A acid gas 700 lbs $/7/05 04:43 - 0$:29 ULSD sour fuel gas 6 , 200 lbs There were no events that resulted in exceedence of emission limitations . During the reporting period, CHS completed the required quarterly cylinder gas audits for the various SIP monitors. A report summarizing the results is attached. If there are any questions, please contact Karen Kennah at 4061628-5462 : CHS hereby cerrffres [hat, based on information and belfef formed after reasonable inquiry, the statements and information in this document are true, accurate, and complete. Sincerely,

Patrick B. Kizmtnet Refmery Manager
cc: Mr . Dan Walsb-DEQ, Helena file

## SEP. 12. 2007 2 :lOPM DEQ/PCD/AWMB N0, 495 P, 6 K CHS $az SIP REPORT 3rd Qtr . 2005 Qctob&28, 2005 Page 1 SECTION 7 DATA REPORTING 7(C)(Y)(e) SOURCE OPERATING TIME The Operating hours during the calendar quarter for the source or units associated with the FCC Regenerator/CO boiler stack, old SRU taii gas oxidizer stack, HDS complex SRU stack, main crude heater stack (when sour water stripper overheads are being burned in the main crude heater), and the combined fuel oil and fuel gas combustion units were as follows : Source or Unit Associated with: O e,rat-uai Aouars FCC Regenerator I COBoiler stack 2208 Old SRUtail ioxidizer stack 2208 HDS com lex SRU stack 2208 Main crude heater stack with oil burning) ' 0 Com bined fuel oil and fuel as combustion units 2208 ~ Fuel oil (boilers) 0 7(,C)(1)( :E) MONITORrNG DOWNTIME The total monitoring downtime for the reporting period is presented in the attached Data Summary Sheets for each CEM . 7 C 1 UNUSUAL CIRCUMSTANCES There were no instances this reporting period when phone notifications Circurastauces" were made. 7LC)(Z) EXCESS EMISSIONS SUMMARY There were no instances of excess emissions during the repot'tixxg period. EXHIBIT A-1 SECTION 3 A . S iui FLARING EVENTS There were two flaring events during the reporting peMod. of "Unusual

Zone AAcid Gas on 7/7J05 from 21 :23 - 21 :46 . At approximately 21 :23 on July 7, 2005, the Zone A #1 and #2 Sulfur Recovery Units (SRU) tripped. ,As a result, the pressure in the amine regenerator overhead receiver began to increase_ Within three minutes, the pressure had increased to the point that the valve to the refinery flare opened. Acid gas flaring occurred from21 :23 - 21 :26 (4 minutes) and

### SEP .12 .2007 2 :11PM DEQ/PCD/AWMB

CHS S02 SIP REPO* 3rd Qtr . 2005 October 2$, 2005 page 2 . 

## N0 . 495 P. 7

from 21 :30 - 21 :46 (17 minutes)
. A total of 700 lbs of SOZ was released during the event . 

### CHS conducted a thorough investigation of the incident and determined the loss of flame detectiou in the SRU incinerator stack caused the sulfur units to trip.' CHS believes the opening of one or both of the TCrTt7 bypass valves caused the high acid gas flow to the incinerator. Flow

of SRU tail gas (with a higher H2S concentration) to the incinerator would result in an increase in stack temperature. An increase in stack temperature would result in the reduction offuel to the incinerator . CHS believes the flow oftail gas directly fromthe SR1Js and decreased fuel flow resulted in the incinerator becoming fuel lean and caused the flame to go out . Through Us evaluation, CHS was not able to determine or confirmthe reason the TGTU bypass valve(s) opened. The root cause of the incident was the unexplained opening of the TGTU bypass valve(s)
. This is considered a mxalf4action. It should be noted that CHS has since replaced the positioners on the TGTU bypass valves associated with the Zome A #1 SRU
. The positioners on the TGTU bypass valves associated with the Zoxie A #2 SRU were replaced in June 2005. Ultra Low

Sulfur Diesel (ULSD) Sour Fuel Gas on 8/7/OS from04 :43 - 08:29 Qn Sumday, August 7, 2005, CHS was in the process of starting up the Ultra Low Sulfur Diesel Unit (ULSD) at the refinery for the first time. During the start-up process, specifically during the time when reactor R-901 catalyst was going through the presuifiding process, the sour fuel gas compressor C-902A compressor tripped and the spare sour fuel gas compressor C-902B could not be started . Tbis resulted in the flaring of sour fuel gas fromthe ULSD for a total of 140 minutes between the fte period of 04:43 ,and 08:29. This resulted in total SOz emissions of 6200 lbs. During the investigation, CHS determined the sour fuel gas compressor shut down unexpectedly as a result of the motor overheating . The motor overheated as a result of an abnormally high molecu.lar weight gas 'being routed to the compressor for a significant period of time. CHS also determined that the spare compressor could not be started as a result of the interlock on high temperature of the compressor suction gas. The high temperature was a result o£ the heat tracer on the suction line being in operation while the compressor was shut down. EXHIBTT A, SECTION NA)(1)(e)(ii) OTHER 1VYYNOR SOURCES Additionally, in accordance with the requirements o£ the referenced section, CHS has used "good engineering judgment and appropriate engineering calculations" to estimate SOa emissions fromone minor source, as follows
. 0 polymer burning in the Alkylatxon Unit Hot Oil Belt Heater : 1 .75 Tons SQz

## SEP. 12. 2007 2 :11 PM DEQ/PCO/AWMB~

CERTIFIED NO

. 7003 3110 0004 9526 1408
ranuar,r 27, 2006

Mr . JimHughes Air and Waste Management Bureau Permitting and Compliance Division Department ofEnvironmental Quality Airport Industrial Park 1P 9 1371 Rimtop Drive Billings, NIT 59105-19'78 RE: 4th Qtr . 2005 SIP Report Dear Mr . Hughes : 

## N0.495 P, $

803 Highway 212 S 406-628-6200 P .O . Box 909 chsiAcxom Laural, MT 590aa-8909

. . ; ., .. . . , _, ~ . A' . - . M `~ +A

.

PJ,i ~"?i . rnwfOiV .^

.nt;d ~,~t!% .f1fy A ; : Enclosed please find the SIP reports (written and electronic) for the CU6 Inc (CHS) refinery for the 4th Quarter 2005. Please -note that this report covers the period from October 1, 2005, tbrough December 31, 2005 . There were four flaring events during the reporting period . Each is discussed in the attached repoxt . Date Time Source Total Soy, 1016105, 14:50 -14:55 zone A acid gas 396 ibs 11114/OS 16:12 -16:24 ULSD sour fuel start ;u ) 200 lbs

_ 11129105 _ 08:1 :1- 08:26 ULSD sour fuel gas 482 lbs 11130105 O8:Z9 -09:24

total of Is minutes

### ) 

# ULSDsourfaelgas

---

. 5791bs During the reporting period, there was one event that resulted in smexceedence of emission limitations, in addition to a start up and shutdown. These, events are discussed in the azta.ched report. Date Time Source Total SO 10123105 09:30 -12:04 Zone D SRU 60 lbs 10129-

_ _ 10130105 11 :00 10t28 - 23:00 10/30 Zone D SRU (shutdown) 14,9401bs 31113105 ~ _ _ 01,00- 15:00 _ Zone D SRU (startup), 864 lbs During the reponing period, CHS completed the required quarterly cylinder gas audits for the various SIP monitors . Areport summarizing the results is attachedAdditionally, a table documenting compliance with the sulfur in fuel requirement is attached. If there are any questions, please contact Pat Haynes at 4061628-5418 .

## ~_ SEP, 12. 2007 2 :12PM DEQ/PCD/AWMB N0, 495 P. 9

CBS S()2 SIP REPO 4th Qtr. 2005 January 27, 2006 Page 2 

### failed and the trimair valve went closed. For this reason, the ratio ofacid gas to sir in the SRU was not maintained in the optimal range and the efficiency of the SRU operation was reduced. As a result, the TOM did not receive typical tail gas from the SILU and the concentration of SOZ exiting the TGT(J increased. 2. The Zone D SRU completed the shutdown process from October 28 - October 30, 2005. A total of }.4,940 Ibs of SOZ was released during the 60 hour shutdown process . 3. The Zone D SRU completed the startup process on November 13, 2005. A . total of 8641bs of SOZ during the 14 hour startup process. 4. The Zone A SRU #2 shutdown on October 30 through November 2 and started up on November 14, during which time nn SIP limits were exceeded .
EXHIBIT ,A-1, SECTIO N 3(Al(S)(b)(xx) FLARING EVENTS There were four flaring events during the reporting period. 1 . On October 6, 2005, Zone A . acid gas was flared for a total of six minutes as a result of the unexpected shutdown of the Zone A SRUs. `A total of 396 lbs of .S0z was emitted between 14:50 and 14:55 . The cause of the .?U shutdown was a high level in the amine regenerator receiver . This results-in an automatic shutdown of acid gas flowto the SRYI's . Operations did not realize that the level was approaching the shutdown point because the level indication on the receiver did not indicate the level was rising. The level displacer appeared to be stuck in one position. 2. On November 14, 2005, sour fuel gas fromthe Ultra Low Sulfur Diesel (ULSD) unit was flared fox a total o£ 12 minutes during the startup of the unit A total of 2001bs of SO2 was released during the event . 3 . On November 29, 2005, sour fuel ,gas fromthe ULSD unit was flared for a total of 15 minutes . The flaring event resulted in the release of 482 lbs of SO2 . The event occurred when the ULSD C-901B hydrogen compressor shut down unexpectedly. The shutdown was caused by low lube oil temperature . The lube oil temperature was lowbecause of inadequate insulation and heat tracing on the lube oil system . This event occurred during the first period of cold weather after initial ULSD startup. 4. On November 30, 2005, sour fuel gas fromthe ULSD unit was flared intermittently for a total of 18 minutes between 8 :29 and 9:24. The flaring event resulted in the release of 579 1bs of S02 . The flari :ag event occtured when the ULSD sour fuel gas

## SEP. 12. 2007 2 :12PM DEQ/PCD/AWMB N0, 495 P, 10

CBS SC12 SIP REPO

: 

## 4th Qtr. zoas JanEmry 27, 2006 Page 3 compressor, C-902B, shut down unexpectedly
. The compressor shut down on high discharge temperature. The temperature had increased because coolant flowto the, compressor was lost . All of the coolant had boiled out of the systemafter a steam hose was placed on the coolaut circulation system . The steam-hose was being used temporarily to address cold ambient temperatures . On the previous day, one of the other new

ULSD compressors had shut down on low lube oil tempexatuze. Because of the incident on 11/29, measures were being taken in the XT,C.SA to prevent a similar incident . 

### EXHIBIT At,SECTION 3fA)!1~(e)('i) OTHER MINOR SOURCES AdditionallY, in accordance with the requirements of the referenced section, CI-1S has used "good engineering judgment and appropriate engineering calculations" to estimate SOZ emissions fromone minor source, as follows. " Polymer burning in the Alkylation Unit Hot Oil Belt Heater : 1 .75 Tons S02

## SEP. 12. 2007 2 ;13PM DEQ/PCD/AWMB 

## N0. 495 P. 11

-- ~~ ~ . ~-- - _-~.~- ~~--- -- - - -- ~ .~-----~,,~ CERTTFIED NO

. 7003 31100004 95261j21 April 26, 2006

Mr- TimHughes Air and Waste Management Bureau Permitting and Compliance Division Department of Environnnental Quality Air,port Zndus,drial Park 1P-9 1371 RUntop Drive Billings, MT 59105-1978 RF- lst Quarter 2006 SIP Report Dear lvlr. Hughes= 803 Highway 212 S 406-628-5200 P .O . Box 909 ChsinGCORt Lautel, MT 59044-0909

Enclosed please find the SIP reports (wxitten and electronic) for the CHS Inc (CY-JS) re1*uaery for the lst Quarter 2006. Please mote that this report covers the period from January 1, 2006, through March 'a 1, 2006. There were two flu-ing events during the reporting period. Each is discmsed in the attached report Date lime 

## 1127r2006 04,32-04_s4 211W2006 20

:,32 -20:57 Source

Zone D SRLF 

### UTSD Total SO-Z 1170.5 lbs . ~49 ibs_ D uring the reporting period, there were no events that resulted in an exceedence of SIP emission limitations In addition, attactrments to this report include a table sunu,narizuag the results of the required quaxterly cylinder gas audits for the various 81I' monitors, and a table documenting compliance wit the sulfur nn fuel requirement . If there are any questions, please coutact Fat Haynes at 4061628-5418. CH5 hereby cert~rles that, ba,red on information and beliefformed csftter reasonable inquiry, the statements and information in this documem are true, accurate, and complete.

cc: Mr . Dan WalshDEQ, Relena file -

## SEP, 12. 2007 2 ;13PM DEQ/PCD/AWMB N0 . 495 P. 12 

# CHs so2 SIP REF0~.~ Yst Qtr. 2006

. Apri126, 2006 Page 1 

### SECTION 7 DATA REPORTING 7( C )(1 e SOURCE OPERATING TIME The Operating hours during the oa .ieadar quarter for the source or units associated with the FCC Regenerator/C0 boiler stack, old SRU tail gas oxidizer stack, HDS complex S1tU stack, main crude heater stack (when sour water stripper overheads are beiug burned in the main crude heater), and the combined fuel oil and fuel gas combustion units were as follows : Source or Unit As'sociated with: O perating Hours FCC Regenerator I COBoiler stack 2160 Old S1tU tail gas oxidizer stack 2160 H7S com plex SRU stack 2160 Main orade heater stack with oil burning ) 0 Combined fuel oil and fuel as combustion units 2160 Fuel oil oilers 517 7 1 MONITORING DOWNTIME The total monitoring downtime for the reporting period is presented in the attached Data Summary Sheets for each CEM . Note that beginning in the 3"' Quazter of 2005, the sunaaary data reported in the CEM Emissions Performance section for the S02 - Old SRU (Zone A) CEM

is based on compliance with limits included in the refinery's air quality permit . This is being done because the air quality permit limits are more stringent than the SIP limits . 

### 7(O(DLb,~ UNUSUAL CIRCUMSTANCES There were no instances this reporting period when phone totiflcations of "Unusual Circumstances" were made. , . 7(G)(2) EXCESS EMISSIONS SUMMARY There were no instances of excess emissions during the reporting period. EXHIBIT A-1SEC1TON 3 A ii FLARING EVENTS There were two flaring events during the reporting period. 1 . On ranuary 27, 2006, acid gas was flared for a total of 23 minutes. A total of 11 .70 .8 lbs of S02 was emitted. This was caused by a faulty lowlevel reading in

## SEP, 12. 2007 2 :13PM DEQ/PCD/AWMB
Pagm 2



### Additionally, in accordauce 'wzth the requirements of the referenced section, used " CHS has good engineeringjudgment and appropriate engineering calGUtations" to estfimate SO~ emissions fromone Minor source, as follows. .

the SRU Waste Heat Soiter which an turn ,tripped the iuaterlack that automaticall shuts down the SRU

. As a result of this shutdown the Amine Unit acid g Y as divertW to the flare for apProx.i=.te1Y 23 minutes . It was determined that the fat,lty reading resulted froma weld failure of the float on the level switch
. xeplaceMent float was x-raYed pziorto i ."stallin I'he 2. 4n February 17, sour gas fromthe ULSD unit was flared for a fram, total of 13 minutes. This flaring event resulted in a release of 249 Ibs. Of 542. The flaring g resulted a, shut down of the ~,p ~y~,ogen compressor . This compressor shut do`~ 04 low

suction pressure as a result of a £razez~ t~raxtszuitter
. The transmitter froze as a result 4f inadequate freeze protection
. Additional freeze been installed
. protection has gto ensure the weld was good

E~T'Y' ~r S~CTxON 3 .A X e ~i OTHER MIY4R S4YJRC .US

' FolYmer burning in the A1kylation Unit Ijot 01, Belt ,eater : 1 .75 Tons SO z

## SEP .12

.2007 2 :14PM DEQ/PCD/AWMB 

# HS

CERrTF'MD NO . 7003 31100004 9526 1627 July 26, 2006

Mr . Dan Walsh Air Compliance Section Supervisor Permitting and Compliance division Air and Waste Management Htueau Department of Environmental Quality RE ; 2nd Quarter 2006 STP Report Dear Mr . Hughes : JUL 08 E 2006 MT Dept Environmental 044 PemilNng 8

Comp&ance Dfvison Air Resources Ma=

gement Bureau 

## Na. 495 P. 14 -, .

803 H19hvray 212 5 p.0 . Box 909 Laulel . MT 590a4-0909 a0"28-5200 ditinGCom

Enclosed please find the S7P reports (wtitten and electronic) for the CHS lzc (CHS) refinery for the 2' Quarter 2006. Please note that this report covers the period from April 30 through June 30, 2006- There were three flariag events during the reportuag period . Each is discussed in the attached reportDate Time Source Total SOi 4/07/2006 14 :45 FCCU WGCom p ressor 190 lbs . 5119/2006 09_30 Zone D SRU 10 .72 Tons 6I07I2006 ~ 17 ;42 Zone D C902A Compressor 479 lbsDuring the reporting period, there was one event that resulted in an exceedence of SIP emission limitations. Date Time Source Total S02 5119l2006 ~ 09_30 Zone D SRU 621bs . During the )reporting period CHS completed the an.cual RATA for each of the analyzers. These reports will be subrnitked separately. Additionally, a table documenting compliance with the sulfur in fuel requirement is attached. If there are any questions, please contact Pat Haynes at 4061628-5418. CHShereby certifies that, based on information and belief formed after reasonable inquiry, the statements and information in this documerrr are true, accurate, and complete. Sincerely, 

# P~ .~ ~ t~ ` Patrick B- Kimmet Refinery Manager cc: Mr- Jim

Hughes--DEQ, Helena

## SEP,12,2007 2 :14PM DEQ/PCD/AWMB C1IS SOz SIP REPiD7~`"~' 

# 2nd Qtr. Zaos July 2s, 2006 P$ge2 r 

## N0.495 P, 15

stabilize the unit operations. During that time, the stack SdZ limits, were exceeded. The investigation determined that the nitrogen header failed by cracking due to the extreme thermal stresses caused by inadvertent introduction of nitrogen into the header from the supply tank while it was being filled. The supplier, which owned this supply system ., had made a system modification that did not have adequate hazard reviewprior to placing in operation. The system was returned to the original design. In addition, the supplier has instituted a hazard zeview

process for changes . 

## EMIBIT A-XSECTION3()(S)fb)(ii) MARING EVENTS There were three flaring events during the reporting period. 1 . On April 7, 2006, the west FCC wet gas compressor tripped off on loss of lube oil pressure causing wet gas to be flared for approximately nine minutes . This resulted in the release of about 1901bs. of S02. The east wet gas compressor was already down fox maintenance so was unavailable . A temporary bypass line had been installed around the filter but could not provide sufficient flowto keep the compressor on line. The investigation found that the loss of lube oil pressure was due to coke that had formed on a deteriorating lube oil electric heater. This coke had flaked off, thus plugging the lube oil filter . The heater elements were removed until a new

element can be installed, In addition, parallel lube oil filters will be installed on both wet gas compressors to allowfor switching of filters online. Z. See the description of the May 19, 2006 incident listed under excess emissionsummary

### 3. On June 7, 2006 the Zone D XJLS,17 Unit C-902A compressor tripped . Attempts were made to start the standby compressor, C-902B but were unsuccessful
. Additional attempts were made to restart C-902A
. and were eventually successful . During this time, the unit reduced rates to minimize the impact The compressor shutdown resulting in D909 off gas being routed to the flare for approximately 30 minutes . About 479 pounds of S02 was released during this event . The investigation indicated that C-902B could not be started due to a blown fuse in the electrical feed systemthat resulted fromthe way the compressor had been started in the past_ The blown fuse was replaced and additional start-up instructions for the compressors were issued.

## UP, 12. 2007 2 :15PM DEQ/PCD/AWMB K'~^"ra



### CE1tTWmD NQ

. 7003 3110 0004 9526 4218 October 30, 2006 

## OCT 3 4 2006 Mr . Dan Walsh Air Compliance Section Supervisor PertnXtting and Compliance division Air and Waste Management Bureau Department of Environmental Quality PQ Sox 200901 Helena, MT 59620-0901 RE: 3rd Qu.arter 2006 SIP Report Dear Mr. Walsh: o1A ~.+c .R lY As. . ,~$'

MT Dap Parml ;ting 8 Compliance Divlsptl Air Raspurces Management Bureau 

## N0.495 P. 16 d

603 Hig+iway 272 5 406-628-5200 p~0 . Box 909 chsinc,com Laurel, MT 590a4-0909



### Enclosed please find the SIP reports (written and electronic) for the CI :IS Inc (CHS) refinery for the 3rd Quarter 2006. Please note that this report covers the period from July 1 through September 30, 2006. There were no flari .ng events during the reporting period
. In addition, during the reporting period, there were no events that resulted in an exceedence of SIP emission limitations. 

### During the reporting period CHS completed the quarterly Cylinder Gas Audit for each of the analyzers
. This infoxmation is attached
. Additionally, a table documenting compliance with the sulfur in fuel requirement is attached. If there are any questions, please contact Pat Haynes at 406162$-541$
. CHS hereby certifies that, based on information and belief formed after reasonable inquiry, the statements and inforrnation in this document are true, accurate, and complete. Sincerely,
Patrick B, Kimxnet Refinery Manager cc: Mr . JimHughes--DEQ, Helena

## SEP, 12. 2007 2 :15PM DEQ/PCD/AWMB N0, 495 "P, 1,777,77." 

# jCHSj

CERT1k9ED NQ . 7006 2150 0003 4374 5164 

### April 25, 2007
Mr . Dan 'GG'alsh Air Compliance Section Supervisor Perinittxng and Compliance division Air and Waste Management Bureau Department of Environmental Quality PO Box 200901 

### Helena, MT 59620-0901 RE: Xst Quarter 2007 SIP Report Dear Mr . Walsh: 803 Highway 21Z 5 4Q&6284100 P .O. Box 909 efisinr-r,pr, Laurel, PIT 5904A,0909



## APR 2 5 2007 MT Dept, Environmental Qq31i4/ Permitting &compliance DM= AIrRw+wroe4laeagemente1rrew



### Enclosed please find the SIP reports (written and electronic) for the CHS Inc (CHS) refinery for the 1st Quarter 2007. Please note that this report covers the period from January 1 through March 31, 2007. 

### During the reporting period, there were no flaring event ands no events that resulted in an exceedence of SIP emission. limitations . During the reporting period CHS completed the quarterly Cylinder Gas Audit for each of the analyzers
. This information is attached. Additionally, a table documenting compliance with the sulfur in fuel requirement is attached. If there are any questions, please contact Pat Haynes at 406/62$-541$
. CHS hereby certifies that, based on 'information and belief formed after reasonable inquiry, the statements and information in this document are true, accurate, and complete. 

### Sincerely,

Patrick B

. Kimmet , 

### Refinery Manager ee: Mr . JimHughes-DEQ, Helena

## -SEP .12.2007 2 :16PM DEQ/PCD/AWMB NO-495 P, 18 4 6- CERTrE'TED NO

. 7006 2150 0003 4374 9780 July 30, 2007
Mr. Dan Wa1sh 

### Air Compliance Section Sapervisor Permitting and Compliance division Air and Waste Managemexit Bureau Department of Environmental Quality PQBox 200901 Helena, MT 59620-0901 RE: 2nd Quarter 2007 SIP Report Dear Mr . Walsh: 603 Hiphway 212 S P .0, BOX 909 Laurel, HT 590a40909 

# JUL 3 1 2007 MT 4epta(En*onmec0 41R''N p0ang &Comp6ance D'MSion 1 Air Resou(ces Management



### Enclosed please find the SIP reports (written and electrozzic) for the CHS Inc (CHS) refinery for the 2nd Quarter 2007
. Please note that this report covers the period from April 1 through June 30, 2007_ 

### During the reporting period, there were 3 flaring events, one of these events also resulted in an exceedence of SIP emission limitations, The incident reports for these are attached
. During the reporting period CH5 completed the anwual RATAs for all analyzers except the FCCU analyzers . The FCCU analyzers were relocated fromthe regenerator duct to the stack during turnaround due to the installation of the ESP . ,A . CCrA was completed in June on tb,ese analyzers prior to start up. This information is attached. The CGA was completed in July. Additionally, tables documenting compliance with the sulfur in fuel requirement aro attached. 

### If there are any questions, please eontac't Pat Haynes at 406/62$-541$
. CH'S hereby certifies that, based on information and belief formed after reasonable inquiry, the statements and information in this document are true, accurate, and complete. Sincerely,
Patrick B, Kimmet Refinery Manager ' cc: Mr . Jim

fiugh,es-DEQ, Helena
.

## SEP, 12. 2007 2 :16PM DEQ/PCD/AWMB N0 . 495 P. 19 L CHS S02 SIP I2EPOR1~ 2nd Quarter 2007 July 30, 2007 Page 2 

### 7(G)(2) EXCESS EMISSIONS SUMMARY There was one instance of excess emissions during the repo;rtiq period. This was related to the 5/1612007 power dip. The incident report for this is attached. EXHIBIT A-1, SECTION 3(.A)(5)(b)(ii) FLARING EVENTS There were three flaring events during the reporting period on the dates listed below . The incident reports for these dates are attached. 1 . 5/16/2007 2. 6/13/2007 

# 3. 6r22/z007 E)MRIT A, SECTION 3(A)(I)fe)!xx) OTHER MINOR SOURCES Additionally, in accordance with the requirements of the referenced. secti .m, CHS has used "good engineering judgment and appropriate engineering calculations" to estimate SOZ emiSSionS fromone minor source, as follows. 

### Polymer burning in the Alkylation Unit Hot Oil Belt Heater : 1 .75 Tons SOz

## SEP, 12. 2007 2 :16PM DEQ/PCD/AWMB N0 . 495 P, 20 CHS, Inc. Incident Report Type of Incident x Acid Gas Flaring Incident H drocarbou Flaring Incident 

## x Tail Gas incident CHS Incident M ' Refy-ZonsA-07-14 CHS incident Title Acid Gas FLdAg incident Incident Date June 13, 2007 Incident Duration 

### Start Date Start Time End Date End Time S02 Tons Zone A Acid Gas Flaring 6113/2007 20:49 6/13/2007 ' 21 :40 0.97 Zone A 42 SRU SID 6/13/2007 19;00 6/14J2007 13 :00 1 .09 SOZ Calculation Method: Zone .A Acid Gas to Flare Acid gas from

amine unit - Toms of S02 - (FR)*(TD)*(Conc . H2S)*(8.44* 10"5) FR = Average flow

rate to flaring device during flaring, sefllu TD;-- Total Duration of flazing, hours Conc. H2S =A'vexa,ge concentration of H2S in gas during flaring, scf HZSlsef gas Tons of S02 = (14,681)*(51160)*(0 .93)*(5.44* 10"5)
. Tons of SUz ~ 0.97 Zone A #2 S1zU S/DNatural Gas pur ge b assed TGTTJ to hacinexatox Date Number of Hours MMSCFH Estimated S02 5021bs Total PPM, 6113/2007 5 0.2663 _ _ 3000 ~675

.02 - - - 6/14/2007 13 0.2268 3000 ~ 1494 .99

~vLKI , ~ f ' 

### concentration is based on historical data obtained during shutdown activities

## SEP. 12, 2007 2 :17PM DEQ/PCD/AWMB N0, 495 P, 21

S02 Calculation Method: SQ2 lbs = (Incinerator Stack Flow rate)*(Sp2 cone)*(Q

.x69a:X0-6)*(Number of Hours)

A fire on the #2 SR'C)' Boxler aecessitated shutting the unit down. The #1 SRCJ was already down for turnaround. In order to accomplish this the acid gas feed to #2 SRU needed to be transferred to the ,Zone D SRrJ" . Rates were reduced on the HC?S Unit and the ULSD Unit to reduce acid gas feed to both Zone A and Zone 17 so that the Zone D SRU could manage the entire acid gas load, Just after transferring the load to Zone D, the acid gas compressor in Zone Atripped. This resulted in the flaring ofacid gas for approximately 51 minutes until the compressor could be restarted. . The fire in the #2 SRU Boiler was believed to have been due to a leak on the Boiler head at the gasket . Although
. there was no evidence to indicate an ongoing leak the gasket was tightening stopping the leak. However, the #2 SRU remained in the shut down mode until the following afternoon so that the equipment and piping could be inspected in daylight to ensure that notbiag was missed. Further inspection revealed that there was sulfur under the insulation that had ignited
. The sulfur was likely from a previous leak that had stopped. , Steps Taken

. to Limit the Duration and/or Quantity of 802 Emissions* . 

### Standard procedures were maintained for the shutdown on the sulfur unit. As indicated above, the rates to the uuits generating acid gas were reduced to 'minimize the acid gas feed, thus the amount of acid gas flared was minimized. The installation of the line between the Zone A and Zone D sulfur units allowed for the shut down ofthe 9 2 SRU ,without the need to flare acid gas.

## SEP, 12. 2007 2 ;17PM I Nn ~QEQ/P,C,Q/RWMB
~- ~ , 495P, 22

Description of Action Item Replace insulation at #2 SRUboiler head and seal around mrwa .y such that sulfiu' won't leak underneath
. Evaluate the potential of putting the acid gas compressor on standby wheo

. Zone A is operating on one sWfur unit update operating procedures accordiagly if this is feasible. Assess start up procedures for the acid gas compressor to determine if an update is needed following the first use. Train operators on existing procedure or on the updated procedure, as applicable. Information Required By Consent Decree Paragraph 79(f) 712712007 1 101112007 

# 11/1/2007 1 12J31/2007 

## 11/1/2007 1 12/31/2007

(a) The root cause of this incident was the presence of sulfur under the insulation from a previously undetected leak. The root cause of this acid gas flaring event was not the result o£ the provisions of Paragraph 85 (a) (error resulting from careless operation), SS (b) (failure to follow written procedures), or SS(c) (failure of equipment due to failure to operate and maintain that equipmeo,t in a manner consistent with good engineering practice)

. M incident does not fall . under the conditions in Paragraph 86 because the incident did not result in emissions of greater than 20 pounds per hour continuously for greater than three hours and thetotal number ofAcid Gas Flaring J.ncidents in the last twelve months is less than five. (b) This incident falls under Paragraph 87(a)(2) because this is the first time occurrence of this root cause. Although the incident vas sudden and infrequent, CPIS asserts that it was not reasonably preventable through the exercise of good engin.eering practice
. Target Target Completion Commencement Date Date



### (c) This incident does not fall under either Paragraph 86 or Paragraph 87(b)
. CTlS does not assert a defense to the Flaring Incident . .

## SEP.12.2007 2 :1$PM DEQ/PCD/AWMB

- CBS, Inc. Incident Report 

## N0.495 P. 23

Acid Gas Flaring 1ttcident 

## I Tail Gas incident &drocarbon Flaring Incident Refy-Genl-07-30 Power Dip - Acid Gas Flaring/FXC Flaring Incident

SpZ Calculation Method: Zone AAcid Gas to Flare 

### Acid gas from

amine unit - . . Tons of S02 = (FR)*(T'D)*(Conc . HZS)*($.44*10"1) FR =Average flow

rate to flaring device during flaring, scflhr TD = Total Duration offlaring, hours Conc. H .2S = Average concentration of HZS in gas during flaring, sc,f H2S/scf gas Tons ofSQz=(10,513)*(49/60)*(0.93)*(8 .44*10"S) Tons of $02 = 0

.674 Zone Y) Acid Gas to Flare ~ Acid gas from

amine unit - ' . Tons of SO2 = (FRr(TD)*(Conc . HIS)*($.44* 10-5) FR !mAverage flow

rate to flaring device during flaring, scfThr TD = Total Duration offlaring, hours Cone. H2S = Average concentration of HaS in gas during flaring, scf H-2S/scf gas .~c: ;'
. . ' 

### ~ ~ions of S4z = 0 .535

## SEP, 12. 2007 2 ;1$PM DEQ/PCD/AWMB N0 . 495 P. 24

..,_C,jcuX$tions cont' d A16 E x

m .issio as , er Flaring ,O LOW Pressuze Vapor Recovery System Zoxne DD909 

# Za,rLe C FCCu 1V1isc. small sources Total . 0.243 0.1245 0.1205 0 .05 0.538 tons S02 Description of Incident : A s part o£ a project to upgrade to new electrical switchgear, CHS was changing feed to s. Substation 2 transformer from 4160 to 12 .5 k-,r . Following this switch while powering the' affected transformer back up, there was a power dip due to an internal fault in the Substation 2 transformer . Tbe fault resulted in voltage drop on the main (L~~1) systemto 1 .6 kv for 0.110 seconds. The voltage drop resnlted in the temporary shutdown of various pieces of equipment and units throughout the refiwery. The shutdown of the sulfur units resulted in acid gas Raring for about 108 minutes. Flaring of various other hydroca:rbom s&ams continued until about 23 :00. The zestart of the equipmeat was hampered by recent radio changes that bad been implemented in preparation for the turnaround. Steps Taken to Unit the Duration and/or Quantity of S42 Emissions ; The units/equipment were brought on line as quickly as possible. Because of the loss . of upstream equipznentlunits the amount ofacid gas that needed to be flared was minimal .
Investigation Findioas and RecoxumendaiioW : The Cause Chart for this incident is attached to this report . One of the issues that contributed to the difl"zculty in bringing the units/equipment back on line was the radio system- some claanges had been made in preparation for the turnaround that contributed to some comrntrri .ication Problems . Plans are in place to make changes to resolve this and will be implemented upon receipt of the appropriate license. This has been included as a cozxeetive action item . .

## SEP

.. 12, 2007 . 2 :19PM DEQ/PCD/AWMB N0 . 495 P. 25 CHS,Inc. Incident Report Type of Incident Acid Gas Flarinq Incident H ydrocarbon Flaring Incident X Tail Gas incident CHS Incident )CD Refy-GenI-07-30 CHS incident Title Power Dip - Tail Cras Incideat Incident Date May 18 - 22, 2007 Incident Duration Start Date Start Time End Date End Time S02 Tons Zone D SRU 5/18/2007 07:00 5/21/2007 10:00 10.1 Zone A #2 SRU 5117I2007 10:00 5/22/2007 20:00 9_7

Zone DSRU Shut down Date No. of Hours NIMSCFH Estimated S02 PpMl S421bs Total 5118. 17 0.2594 6000 4472 5/19 24 02704 6000 6580 5/20 24 0 .2716 . 6000 6610 5/21 10 0.2428 6000 2462 Total 201241bs 10.1 torts Zone A #2 SRU Natural Gas/Acid Gas Feed - B yp assed TGU to Incinerator Date Number of Hours N M-SCk'H Estimated S02

PPM, S02 lbs Total 5/17 14 0.2588 3000 1837 . 5/18 24 0.2778 3~000 3380 5>>4 '7d (17gS7 

### ,, non . ~ .5oe . 5/21 24 0 .2464 31000 2998 5/22~ 20 0 .3058 ' 3000 3101 Total 19507 Ibs 9.7 tons ' concentration is based on historical data obtained during shutdown activities

## SEP. 12. 2007 2 ;19PM DEQ/PCD/AWMB N0 . 495 P, 26

J 

### So?, CalcuIa.tion Method: . $OZ lbs = (Incinerator Stack Flow rate)*(SO2 eonc.)*(0.159x10_6)*',(hTumber of Hours) Description of Incident : During the power dip incident on 5/16/2007, there was a small fire on the #1 Crude Unit overhead & fan. The #2 Crude Unit had already been shut down for turnaround. The #1 Crude Uxtxt was shutdown to isolate the fin fan. The loss of the crude units reduced feed available through the rest of the facility, In addition, the site bad reduced inventories in preparation for the turnaround scheduled to begin, 5/18/2007
. This comiaiuation offactors resulted in the need to shut down the YJY,SD (5117) and the HAS Units (5/18)
. The FCCU went on minim um rates until 5/1,8 when the planned shut down was initiated
. These shut downs in turn resulted in a reduction
. of acid gas feed causing the subsequent shutdown of the Zone T) SRU 5I18, The small amount of acid gas feed to Zone A #2 SRU was supplemeated with natural gas beginning on 5117. The #Z SRU stayed down after the 5h,6 power dip for the scheduled turnaround. The emissions provided. in the previous section are those related to the SRU shutdown activities
. The normal shutdown process is to introduce natural gas to the SItU to remove molten sulfur fromthe catalyst bed. As part of the normal shutdown process, this stream is routed around the TOW directly to the incinerator. 'I'bis burnout process takes several days and results in the higher S02 emissions fromthe incinerator stack. As soon as sufficient feed was available fromthe crude unit, operating units were brought back on line in 3diti4m to the sulfar units as sufficient acicwas generated On 5/19 the #1 Czude unit was brought on _lue followed by the TTDS and Zone U SRLI on 5121 and the ULSD and #2 SRU on 5/24 . The FCCU atd other 1ma,ts were shut down begizuai,ug 5/18 for a previously scheduled turnaround. The affected fin fan from#1 Crude Unit has been repaired and will be put back on line following the fall 2007 tunpiaround. Steps Taken to Limit the Duration and/or Qu2ntity of S02 Emissions : Standard procedures were maintained for the shutdown on the sulfur units . The crude unit work was completed as quickly as possible to bring the unit back on line and provide feed for the other units .

### SEP, 12. 2007- 2 :20PNL ._DEQ/PCD/AWMB ~Actiou Items ~escz~ptian of Action Item 

## - -- NO . 495

Review the P1VM0 plan for potential improvements and date accordir_i& implement revisions to the radio systemto include the addition of 2 repeaters to the wasting and add 5 independent back receivers (one p er zone Implement the now

corrosion control strategy on the 91 Crude Unit Overheads . Identify high risk electrical activities and develop guidelines to consider in work planning to ,friimiz e/m7

.tigate the potential . risks . This should include a communication strate for the lant. Operations will identify response and preparation needs for the electrical activities identified as high- risk Information IteqWred $y Consent Decree Paragraph 79(f) (a) The root cause o£ this incident was the failuxe of the No . 2 Substation transformer due to an internal fault . The root cause of this acid gas flaring event was not the result of the provisions of Paragraph 85 (a) (error resulting from

careless operation) or 85 (b) (failure to follow written procedures) or 85(c) (failure of equipment due to failure to operate and maintain that equipment in a manner cousistent with good engineering practice)
. This incident does not fall under the conditions i .u Paragraph 86 because although ;he incident did result in emissions of greater than 20 pounds per hour continuously for greater than three hours, the PMO

plan was followed and steps were taken to limit the duration and/or quantity of emissions associated with the incident and the total number of ,Acid Chas Flaring Incidents in the last twelve months is less than five. (b) This incident faUs uuder Paragraph 87(a)(1) because this is the f=t time occurrence o£this, root cause_ the incident was sudden and infieequent, and it was not reasonably preventable through the exercise of good engineering practice. (c) This,incident does not fall under either Paragraph 86 . or Paragraph 87(b)
. CHS does not assert a defezxse to the Flaring Incident .

## SEP, 12. 2007 2 :20PM DEQ/PCD/RWMB --I- N0 . 495 P. 28

. CFIS, Inc. Incident Report Type of Incident X Acid Gas Flaring Imcident ydrocarbon Flaring Yncident

. Tail Gas incident CHS Incident ED Refy-ZoneA-07-213 CHS incident Title Steaut control valve failure Incident Date June 22, 2007 Itwident Duration Start Date Start 'T`ime End Date End Time Total S02 Tons 612212007 8:00 6122/2007 8:51 0 .6

S02 Calculation Method: Zone AAcid Gas to Flare Acid .gas fromammine unit - ' Tons of S0z = (k'lz)*(T'D)*(Conc. IT2S)*($.44* 10-s) FR;-- Average flow

rate to flaning device during flaring, scf/hr TD = Total Duration of flaring, hours Conc, H2S = Average concentration of HZS in gas during flaring, scf FIzS/scf gas Tons of S02= (8973)*(51/60)*(0.93)*(8.44*10-5) Tons of SOZ = 0.60 Description of Incident : , 

### The scaffold builders in the pipe rack removing scaffolding in the Amine Unit stepped oia the air line on the steazn control valve for the MDEA stripper reboiler . This resulted in the valve opening providing an inzrnedzate and large increase in steamflow to the stripper, This in turn increased the temperature resulting in au increased overhead flowfromthe MDEA stripper. From this the pressure increased on the stripper receiver. This acid gas feed is pressure controlled to the SRU's. The increased pressure exceeded the limits resulting in the flare valve opening to relieve the pressure_ Acid gas was flared for approximately 51 minutes. Subsequently the level in the stripper receiver increased and when it reached a lugh level, the interlocked tripped both of the sulfur units for a very brief period of time. The caused acid gas to be flared.

## SEP, 12. 2007- 2 ; 21 PM =,,7 -DEQ/PCD/AWMB N 0 . 49 5 - P- 29 [The ir=ediate response to the incident was to manually block in the oontrol valve and manually open the steambypass to the Reboiler . ,PS &,a^er.& Su 

## JLJ axAlor Quantity 0 MISSIons :

The air line was immediately replaced. The potential safety and operational issues had been reviewed with contractors working in the piperack. Investigation Findings and Recommendations : The Cause Chart for this incident is attached to this report .

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## SEP.12.2007 2-21PM DEQ/PCD/RWMB



## r on Items 4~5~P30

, "Y'argefi Target Completion Description of Action Item Commencement Date Date Review incident and learnirl with the Zone A operators 10/1/2007 111112007 For response action -- evaluate the potential to drain MDEA stripper to the sour water systemduring times of 101112007 12/3112007 high levels in the MDEA receiver. This nlay help miti gate a bi t level tri of the SRL3's.

Information Required By Consent Decree Paragraph 79(t) (a) 'The root cause of this incident was inadequate attention to the area by the contractors in the pipe rack. The root cause of this acid gas flaring event was not the result of the provisions of Paragraph 85 (a) (error resulting from careless operation) 85 (b) (failure to followwritten procedures), or 85(c) (failure of equipment due to failure to operate and maintain that equipment in a m .anner consistent with good engineering practice)
. This incident does not fall under the conditions in Paragraph 86 because the incident did not result in emissions of greater than 20 pounds per hour continuously for greater than tbree hours and/or quantity of emissions associated with the incident and the total iiuxnber of Acid Gas Flaring Incidents in the last twelve months is less t= five, (b) This incident falls under Paragraph 87(a)(1) because this is the first time occurrence of this root cause. the incident was sudden and infrequent, and it was not reasonably preventable through the exercise of good engineering practice. 

### (c) This incident does not fall under either Paragraph 86 or Paragraph 87(b)
. CHS does not assert a defense to the Flaring Ineident. . 

## NO

## SEP .13 .70072 1 :57PM DEQ/PCD/AWMB 

# STATE OF MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY PERMMING AND COMPLIANCE DMSION AIR RESOURCES MANAGEMENT BLMEAU

Box 200901 Helena, MT 59620 Phone (406) 444-3490 P'ax # (406) 444-1499
. 

## DATE: 

# 13 

# , Z7
Total Nuxnber of Pages, including cover sheet : 3 TO : 

## N0, 500 P, 1



# L,&jZ7 (~S-7-" 6 (3-63) 34a-Z431 

# u~s 2FPA ~, .,. 8 /)n, Y- f4j~

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# j1tjke44 FAx NO . . -363-3l~ ----~ *Y

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G_1a~mb~supportl~'annsladministrativolf`axsh~et .doc

## as/SEP, 13. 2007 j 1 : 58PM~ 4oEDEQ/PCD/AWMB
. ~' ~oss N0, 500 P, 2

CKS, lnc.Incident ltepart Type of Xnciclenf Acid Gas Fladu Incident

x Hydrocarbon Flarin g Incident



### Tail Cgs incident CI ;TS Incident ID Refy-ZoneB-06-56 

### C1RS incident me Zone R Hydrocarbon Flaring Incident Incident Date November 25, 2006 Incident Duration Start Date Start Time End Date End Time S02 Tons 1112512406 07,04 1112712006 09:00 2 .08 SOz Calculation Method: Off gay from

various sources to LPVR system-- 

### Tons of 542 = (F,R)~(TD)*,(Conc, H2S)~`(8.44* 10'S)
. FR ~ Average flow

rate to flaring device during flaring, scflhr TD =Total Duration of t7~aring, hours . Cono. HaS ; Averagc concentration of H2S in gas during flaring, sCf H2S/sCf gas 

### Tons of 50, = (4011,4)*(49)*(0.1,254)*(S .44* 1. 0) . Tons of S02= 2.08 , 

### Description of Incident : -- At approximately 7;04 amon November 25, 2006 the Zone B Low Pressure Vapor Recovery compressor fa.iled
. The ofl=gas is automatically routed to the flare. Two separate attempts were made to restart the compressor. Both times, the compressor started but tripped off after a few xninsrtes. Over the weekend two separate call outs were made . Both Machinist and Techorait (I&E) personnel claeckod out the compressor -and could rind no rmson for the trips
. On Monday (11/'?'7) morning, pitor to having maintenance work on the compressor, operations personnel restarted it and it continued to ran, Steps Taken to Lirriit the Duration and/or Quantity of S02 Ernisstons : 

### Muintenance personnel were called out on off hours to work on the compressor . Several attempts were made to restart the compressor, Since there wa5 the potential to caose damage to the compressor by c-ontinuling to zestnrt it without knowing the cause, these efforts were discontinued until Monday morning
.

---

## osiSEP.13.20071 1 :58PMa 4osDEQ/PCD/RWMB 

## ----,--NO . 500

_ P. 3 . . Steps Taken to Limit xlie Duration and/or Quantity of S02 Emissions (cont'd) : Normally, part of the off gas waaltl have been rerouted thus mirnimizing the guctrztity flared . However, the Zone ,A, TGTU wits upset during this period eliminating the ability to reroute part of the off bas. I Znvcsfigntlori )rind4ngs ,and Recowmendations : Tile investigation was unable to determine the cause of the trip. There were no upsets or alarms in the unit or equipment psior to the trip. Neithcr Machinist nor 'pechcraft personnel were able to rind anything
. The weather had turned coldcr that day which could potentially have contributed to the trip. 

### There are no diagnostics, available on the compressor making it much more difficult to determine the cause of the trip,

1 Description of Action Itern 

### Develop written procedure for the shut down of die LFVR compressor . This shauld include methods of minimizing flaring such as re-routing off-gasand reducing rates. Train unit operators and operations oncall personnel on the procedure. Install si ci'ragnostic system oin the LPVR compressor . Mr Yc"



### 211/2007,

21112007 Infor=tion Required By . Consent De&ee Parsgrqph 79(f) In accordance with Paragraph 94, the stipulated penalties untd,4 Subsection J (Paragraphs 84 _ 88) and Section hl' :1, Subsection I (paragraphs 228 - 23 1) do not apply to Hydrocarbon Flvring Events . For this reason, the inf"oxzrnation required by Paragraph 79(f) i5 not included in this report .