[HOLLY]
 

REFINING & MARKETING COMPANY - WOODS CROSS 

393 South 800 West. Woods Cross, Utah 84087-1435 

(801) 299-6600 • Fax (801) 299-6609 

January 25, 2010 

Mr. Neil Taylor CERTIFIED MAIL: 7007 14900001 38614832 

Div. ofEnvironmental Response & Remediation, SERC 

Utah Department ofEnvironmental Quality 

PO Box 144840, 168 North 1950 West 

Salt Lake City, UT 84114 

Sgt. Brent Peters CERTIFIED MAIL: 7007 14900001 3861 4849 

Davis County Sheriffs Department 

Davis County LEPC 

800 W. State Street 

Fannington, UT 84025 

RE: Reportable Event January 19t 2010 

Unavoidable breakdown of equipment 

To Whom It May Concern: 

In accordance with the Emergency Planning and Community Right-to-Know Act (EPCRA), 40 CPR Part 

355; and the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 40 

CPR 302.6, Holly Refining & Marketing Company - Woods Cross Refinery notified your offices of excess 

emissions that resulted from an unavoidable breakdown that affected our Ammonia Stripping Unit (ASU). 

Notification: The Night Superintendent notified the Division of Air Quality (DAQ), the State Emergency 

Response Committee (SERC) and the Local Emergency Planning Commission (LEPC) on January 20, 

2010. The following table details notifications for this event. 

SERC 

LEPC 

Hans Millican 

Voice mail - Brent Peters 

Reported Event # 7654 

Left a message. 

01/20/2010 14:58 

01/20/2010 15:04 

Affected Units: Ammonia Stripping Unit (Unit 22), Sour Water Stripper (Unit 18), Amine Unit (Unit 16), 

North Flare 

Cause and Nature of Event: 

During the start up process ofthe new Ammonia Stripping Unit, the sourwater feed to the unit was being 

adjusted to balance the feed between the two sour water tanks. This led to inconsistencies in the feed and 

the swinging feed compositions led to a buildup of pressure in the unit. This pressure buildup affected 

Unit 16, Unit 18, and Unit 22 and caused acid gas and sour water gas to be sent to the flare. 

Duration ofEvent: Acid gas and sour water gas were routed to the North Flare on January 19, 2010 from 

15:53 to 18:24. The total duration ofthe event was 2 hours and 31 minutes. Acid gas was sent to the flare 

for a total of2 minutes during the event. Sour water gas was sent to the flare for a total of 1 hour and 43 

minutes during the event. 
January 25,2010 

Mr. Neil Taylor, Sgt. Brent Peters 

Page 2 

Estimated Quantity ofPollutants Emitted During the Event: 

North Flare 1216 I 

Steps Taken to Control Emissions: 

Operations put the valve that opened to the flare into manual operation during the event to reduce the 

amount of gas sent to the flare. Additional personnel were on site to assist with the unit startup and 

worked quickly to limit the amount of gas sent to the flare. All excess acid gas and sour water gas was 

combusted in the flare to prevent direct venting to the atmosphere. 

Please contact me with any questions or comments at (801) 299-6619. I can be reached by email at 

bo.bothwell@hollycorp.com. 

Sincerely, 

Bo Bothwell 

Environmental Engineering Specialist 

RE 2010-01 ASU-SWS start up (20100119).doc 

CC: M. Astin (r) File S6-2 (4) 

B. Christensen 

S. James 

Holl Refining & Marketing Company - Woods Cross Refinery, 393 South 800 West. Woods Cross, UT 84087-1435, Phone (801) 299-6600, Fax (801) 299-6609 
Holly Refining and Marketing - Woods Cross Refinery 

Estimate of Emissions During SRU Upset 

Date/Time 

1/19/10 3:53 PM 

1/19/10 6:24 PM 8.66 0.19 2.5167 82% 64% 19.01 

Total S02= 

1216.3 

1216.3 

H2S Concentration 

from 10109 CCI 

performance test 

Dry Basis 

Test 

1 

2 

3 

4 

5 

0 

Allerage 

Acid Gas 

64% 

64% 

63% 

64% 

SWSGas 

31% 

30% 

28% 

29% 

Material Balance 

Un~22

ASU/SWSGas 

82% 

RE 2010-01 ASU-SWS start up (20100119).xls 5/7/2010 1:06 PM
 

Emissions Page 1 of 1
 
REFINING & MARKETING COMPANY - WOODS CROSS 

393 South 800 West. Woods Cross, Utah 84087·1435 

(801) 299-6600 • Fax (801) 299-6609 

February 15,2010 

Mr. Neil Taylor CERTifIED MAll.,; 70093410000236330661 

Div. ofEnviIonmental Response & Remediation, SERC 

Utah Department ofEnvironmental Quality 

PO Box 144840, 168 North 1950 West 

Salt Lake City, UT 84116 

Sgt. Brent Peters CERTIFlED MATI...: 7009 3410 0002 3633 0678 

Davis County Sheriffs Department 

Davis County LEPC 

800 W. State Street 

Farmington, UT 84025 

RE:	 Reportable Event February 10-11, 2010 

Unavoidable breakdown of equipment 

To Whom It May Concern: 

In accordance withthe Emergency Planning and Community Right-to-Know Act (EPCRA), 40 CFR Part 

355; and the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 40 

CFR 302.6, Holly Refining & Marketing Company - Woods Cross Refinery notified your offices of excess 

emissions that resulted from an unavoidable breakdown that affected our Sulfur Recovery Unit (SRU). 

Notification: Bo Bothwell notified the State Emergency Response Committee (SERC) and the Local 

Emergency Planning Commission (LEPC) on February 11,2010. The following table details 

notifications for this event. 

;1::"-::;'Ag~~eS;'{r;': 'C9ht~~,tt;'>:~,;i;'~i;': ..,'>:";;:1-;;,,"';: "", ',;11'7;; '·;~rc:;/;;{:~>·.< ·.;i';;;..;3~:i~:0:'Z::>

SERC Kim Viehweg Reported Event 

LEPC Voice mail - Brent Peters Left a message. 

'Y&? .,,'", i", ',oJ/t,il' Ie 

02/11/201012:21 

02/11/2010 12:24 

Affected Units: Ammonia Stripping Unit (Unit 22), Sour Water Stripper (Unit 18), Sulfur Recovery Unit 

(Unit 17), Amine Unit (Unit 16), North Flare 

Cause and Nature of Event: 

On February 10,2010 during the start up process of Unit 22 after scheduled maintenance, there was a 

buildup of pressure in the unit. This pressure buildup affected Unit 16, Unit 17, Unit 18, and Unit 22 and 

caused acid gas and sour water gas to be sent to the flare. This release was below reportable levels. On 

February 11, 2010 while performing maintenance on the Unit 17 incinerator fuel gas valve, the 

incinerator interlocked and shutdown. Personnel immediately tried to restart the incinerator but were 

unsuccessful due to a malfunction in the pilot igniter. After 15 minutes ofthe incinerator being offline, 

the thermal reactor interlocked and as a result acid gas and sour water gas were sent to the flare. The 

combination ofthe two events exceeded the reportable limit. 
February 15,2010 

Mr. Neil Taylor, Sgt. Brent Peters 

Page 2 

Duration ofEvent: Acid gas and sour water gas were routed to the North Flare on February 10, 2010 from 

12:35 to 13:43 and again on February 11, 2010 from 10:18 to 22:25. The total duration ofthe event was 33 

hours and 50 minutes. Acid gas was sent to the flare for a total of3 hours and 40 minutes during the event. 

Sour water gas was sent to the flare for a total of 6 hours and 38 minutes during the event. 

Estimated Quantity ofPollutants Emitted During the Event: 

North Flare 3946 

Steps Taken to Control Emissions: 

Operations immediately attempted to restart the incinerator. Maintenance personnel were called to assist 

with the unit startup and worked quickly to limit the amount of gas sent to the flare. All excess acid gas 

and sour water gas was combusted in the flare to prevent direct venting to the atmosphere. 

Please contact me with any questions or comments at (801) 299-6619. I can be reached by email at 

bo.bothwell@hollycorp.com. 

Sincerely, 

BoBothwell 

Environmental Engineering Specialist 

RE 2010-02 SRU Maintenance (20100210-20100211).doc 

CC: M. Astin (r) File S6-2 (4) 

B. Christensen 

S. James 

Holly Refining & Marketing Company - Woods Cross Refinery, 393 South 800 West, Woods Cross, UT 84087-1435, Phone (801) 299-6600, Fax (801) 299-6809 
Hollv Refining and Marketing - Woods Cross Refinery 

Estimate of Emissions During SRU Upset 

Date/Time 

2110/1012:35 PM
 

2111/10 10:25 PM 16.87 17.20 0.00 33.8333 87% 50% 6% 61.65 3945.5
 

Total S02= 3945.5
 

H2S Concentration Test Acid Gas SWS/ASU
 

from 01110 CCI 1 51% 88%
 

performance test 2 50% 89%
 

Dry Basis	 3 51% 85%
 

4
 

5
 

6
 

Average 50% 87% 

Moisture Content 4.90% 5.50% 

Combined Stream SWS/ASU 22V3 

H2S Concentration 82% 6.4% 

from Unit 22 Mat. Sal 

upset Stream SWS
 

H2S Concentralioo 33%
 

RE 2010-02 SRU Maintenance (20100210-20100211).xls 51712010 1: 36 PM
 

Emissions Page 1 of 1
 
~HOLLr
 REFINING & MARKETING COMPANY - WOODS CROSS 

393 South 800 West. Woods Cross. Utah 84087·1435 

(801) 299-6600 • Fax (801) 299-6609 

February 15,2010 

Mr. Neil Taylor CERTIFIED MAIL: 70093410000236330685 

Div. ofEnvironmental Response & Remediation, SERC 

Utah Department of Environmental Quality 

PO Box 144840, 168 North 1950 West 

Salt Lake City, UT 84116 

Sgt. Brent Peters CERTIFIED MAlL: 70093410 0002 36330692 

Davis County Sheriff's Department 

Davis County LEPC 

800 W, State Street 

Fannington, ur 84025 

RE: Reportable Event February 13-14, 2010 

To Whom It May Concern: 

In accordance with the Emergency Planning and Community Right-to-Know Act (EPCRA), 40 CPR Part 

355; and the Comprehensive Environtnental Response, Compensation, and Liability Act (CERCLA) 40 

CPR 302.6, Holly RefIning & Marketing Company - Woods Cross RefInery notified your offices of excess 

emissions that resulted from our Ammonia Stripping Unit (ASU). 

Notification: Bo Bothwell notifIed the State Emergency Response Committee (SERC) and the Local 

Emergency Planning Commission (LEPC) on February 15, 2010. The following table details 

notifications for this event. 

SERC 

LEPC 

Answering Service 

Voice mail- Brent Peters 

Reported Event 

Left a message. 

02/15/2010 08:26 

02/15/201008:29 

Affected Units: Ammonia Stripping Unit (Unit 22), North Flare 

Cause and Nature ofEvent: 

On February 13, 2010 operators inadvertently changed the set point on the control valve that sends sour 

gas from 22V3 to the flare (22PC61OB) while trying to make an adjustment to the control valve that 

sends sour gas from 22V3 to 22V4 (22PC610A). Changing the set point on 22PC61OB resulted in the 

automated process control adjusting the pressure in the vessel to maintain the new set point. The valve to 

the flare 22PC61OB was opened and sour water gas was sent to the flare. 
February 15, 2010 

Mr. Neil Taylor, Sgt. Brent Peters 

Page 2 

Duration ofEvent: Sour water gas was routed to the North Flare on February 13, 2010 from 06:00 until 

February 14, 2010 at 10:23. The total duration ofthe event was 28 hours and 23 minutes. Sour water gas 

was sent to the flare for a total of 17 hours and 33 minutes during the event. 

Estimated Ouantity ofPollutants Emitted During the Event: 

I)" .·,;S~urc~:.· .../;';i:::.: 'r::'SQdJ~s),

North Flare 4540 

I; ~M10·(Ibs) ..: .;i~b~(u)~).[,:;~ >~O'(lb~): ... vot'(lb~f··

Steps Taken to Control Emissions: 

Operations searched for sources venting to the flare throughout the plant using thermal detection on the 

flare header. Once the source was determined to be coming from Unit 22, a detailed search of all vents in 

the unit was conducted and the set point error was detected. The set point was corrected and flaring 

ceased. All excess sour water gas was combusted in the flare to prevent direct venting to the atmosphere. 

Please contact me with any questions or comments at (801) 299-6619. I can be reached by email at 

bo.bothwell@hollycorp.com. 

Sincerely, 

Bo Bothwell 

Environmental Engineering Specialist 

RE2010-03 22V3 (20100213-20100214).doc 

CC: M. Astin (r) File S6-2 (4) 

B. Christensen 

S. James 

Holly Refining & Marketing Company - Woods Cross Refinery, 393 South 800 West, Woods Cross, UT 84087-1435, Phone (801) 299-6600, Fax (801) 299-6609 
Holly Refining and Marketing - Woods Cross Refinery 

Estimate of Emissions During SRU Upset 

Date/Time 

2/13/10 6:00 AM 

2/1411010:23 AM 0.00 0.00 420.62 28.3633 87% 50% 6% 70.93 

Total S02 = 

4539.8 

4539.8 

H2S Concentration 

from 01110 CCI 

performance test 

Dry Basis 

Test 

1 

2 

3 

4 

5 

6 

Average 

Acid Gas 

51% 

50% 

51% 

50% 

SWS/ASU 

68% 

89% 

85% 

67% 

Moisture Content 4.90% 5.50% 

Combined Stream 

H2S Concentration 

from Unit 22 Mal. Bal 

Wei Basis 

SWS/ASU 

82% 

22V3 

6.4% 

RE 2010-03 22V3 (20100213-201 00214).xIs 5/7/20101:08 PM
 

Emissions Page 1 of 1
 
HOLLY
 

REFINING &MARKETING COMPANY - WOODS CROSS 

393 South 800 West. Woods Cross, Utah 84087-1435 

(801) 299-6600 • Fax (801) 299-6609 

February 25, 2010 

Mr. Neil Taylor CERTIFIED MAIL: 7009 3410 000236330715 

Div. of Environmental Response & Remediation, SERC 

Utah Department of Environmental Quality 

PO Box 144840, 168 North 1950 West 

Salt Lake City, UT 84116 

Sgt. Brent Peters CERTIFIED MAIL: 7009 3410 0002 36330722 

Davis County Sheriff's Department 

Davis County LEPC 

800 W. State Street 

Farmington, UT 84025 

RE: Reportable Event February 23,2010 

Unavoidable breakdown of equipment 

To Whom It May Concern: 

In accordance with the Emergency Planning and Community Right-to-Know Act (EPCRA), 40 CFR Part 

355; and the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 40 

CPR 302.6; Holly Refining & Marketing Company - Woods Cross Refinery notified your offices of excess 

emissions that resulted from an unavoidable breakdown that affected our Sulfur Recovery Unit (SRU). 

Notification: Bo Bothwell notified the State Emergency Response Committee (SERe) and the Local 

Emergency Planning Commission (LEPC) on February 23,2010. The following table details 

notifications for this event. 

SERe Kim Viehweg Reported Event 02123/2010 15:05

,':';t~Ag~~ci*,;'~;'!·.· !:Clol;ltaCti¥i 

LEPC Voice mail - Brent Peters Left a message. 02123/201014:59 

Affected Units: Ammonia Stripping Unit (Unit 22), Distillate Hydro-Treater, (Unit 19), Sour Water 

Stripper (Unit 18), Sulfur Recovery Unit (Unit 17), Amine Unit (Unit 16), Crude Unit (Unit 8), North Flare 

Cause and Nature ofEvent: 

On February 22, 2010 the SRU incinerator stack temperature started to fall. It was determined that there 

was a plug in the incinerator's fuel gas system. Maintenance was performed to clear the plug in the fuel 

gas system. During the maintenance process, the incinerator flame went out and interlocked the SRU, 

sending acid gas and sour water gas to the flare. It was determined that the burner in the incinerator had 

become plugged and the SRU would need to be shut down to perform the repair. The incinerator was 

temporarily re-ignited to initiate sulfur shedding procedures before shutting down the SRD. After sulfur 

shedding procedures were complete, the SRU was shut down to repair the burner. During the SRU 

shutdown, acid gas was sent to the flare. 
February 25,2010 

Mr. Neil Taylor, Sgt. Brent Peters 

Page 2 

Duration ofEvent: Sour water gas was routed to the North Flare on February 23,2010 from 11:29 to 13:51. 

Acid gas,was routed to the North Flare on February 23,2010 from 11:19 to 12:39 and again from 16:31 to 

20:00. The total duration ofthe event was 8 hours and 41 minutes. Acid gas was sent to the flare for a total 

of 4 hours and 51 minutes during the event. Sour water gas was sent to the flare for a total of2 hours and 23 

minutes during the event. 

Estimated Quantity ofPollutants Emitted During the Event: 

,;" '.;,:": "". .. .../; "'.,:' ;1:<.;~92XII;~)"

North Flare 2095 

.,~ ;;;V;'~N1i:~?(I~~b .":" NQJ({lb!i) Y:~' ~')"~9~:)iib$l>' (} ,~;Y()G(~ b~) .. ,0 

Steps Taken to Control Emissions: 

Operations and Maintenance personnel made several attempts to clear the plug in the fuel gas system in 

an attempt to repair the system without having to shut down the SRU, Once it was determined that the 

SRU had to be shutdown to perform the repair, sulfur shedding procedures went into effect to limit the 

resulting flaring. All excess acid gas and sour water gas was combusted in the flare to prevent direct 

venting to the atmosphere. 

Please contact me with any questions or comments at (801) 299-6619. I can be reached by email at 

bo.bothwell@hollycorp.com. 

Sincerely, 

Bo Bothwell 

Environmental Engineering Specialist 

RE 2010-04 SRU Incinerator Burner (20100223).doc 

CC: M. Astin (r) File S6-2 (4) 

B. Christensen 

J. Crawley 

Holly Refining & Marketing Company - Woods Cross Refinery, 393 South 800 West, Woods Cross. UT 84087-1435, Phone (801) 299-6600, Fax (801) 299-6609 
Hollv Refining and Marketing - Woods Cross Refinery 

Estimate of Emissions During SRU Upset 

Date/Time 

2123/10 11:19AM 

2/23110 8:00 PM 5.91 14.39 0.00 8.6833 87% 50% 6% 32.73 

Total S02 '" 

2095.0 

2095.0 

H2S Concentration 

from 01110 CCI 

performance test 

Dry Basis 

Test 

1 

2 

3 

4 

5 

6 

Average 

Acid Gas 

51% 

50% 

51% 

50% 

SWS/ASU 

88% 

89% 

85% 

87% 

Moisture Cootent 4.90% 5.50% 

Combined Stream 

H2S Concentration 

from Unit 22 Mal. Bal 

SWS/ASU 

82% 

22V3 

6.4% 

RE 2010-04 SRU Maintenance (20100223).xls 5/7/20101:08 PM
 

Emissions . Page 1 of 1
 
HOLLY
 

REFINING & MARKETING COMPANY - WOODS CROSS 

393 South 800 West. Woods Cross, Utah 84087·1435 

(801) 299·6600 • Fax (801) 299-6609 

April 20, 2010 

Mr. Neil Taylor CERTIFIED MAIL: 70093410000236330784 

Div. of Environmental Response & Remediation, SERC 

Utah Department ofEnvironmental Quality 

PO Box 144840, 168 North 1950 West 

Salt Lake City, ur 84116 

Sgt. Brent Peters CERTIFIED MAIL: 7009 3410000236330791 

Davis County Sheriffs Department 

Davis County LEPC 

800 W. State Street 

Farmington, ur 84025 

RE: Reportable Event April 9, 2010 

Unavoidable breakdown of equipment 

To Whom It May Concern: 

In accordance with the Emergency Planning and Community Right-to-Know Act (EPCRA), 40 CPR Part 

355; and the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 40 

CFR 302.6, Holly Refining & Marketing Company - Woods Cross Refinery notified your offices of excess 

emissions that resulted from an unavoidable breakdown that affected our Sulfur Recovery Unit (SRU). 

Notification: Bo Bothwell notified the State Emergency Response Committee (SERC) and the Local 

Emergency Planning Commission (LEPC) on April 9, 2010. The following table details notifications for 

this event. 

SERC After Hours Reporting 

LEPC Voice mail - Brent Peters 

Reported Event to Shelby 

Left a message. 

04/09/201014:43 

04/09/201014:46 

Affected Units: Ammonia Stripping Unit (Unit 22), Sour Water Stripper (Unit 18), Sulfur Recovery Unit 

(Unit 17), Amine Unit (Unit 16), North Flare 

Cause and Nature of Event: 

On April 9, 2010 the SRU east combustion air blower malfunctioned and shutdown, causing the SRU 

thermal reactor to shutdown on low air-flow. Operations switched from the east blower to the west 

blower and attempted to restart the SRU. When restarting the SRU, the west blower's belt broke. 

Maintenance replaced the belt on the west blower and the SRU was restarted. During the shutdown of 

the unit acid gas and sour water gas were sent to the flare. 

Duration ofEvent: Acid gas and sour water gas were routed to the NorLhFlare on April 9, 2010 from 13:23 

to 14:29. The total duration of the event was 1 hour and 6 minutes. Acid gas was sent to the flare for a total 

of 1 hour and sour water gas was sent to the flare for a total of 1 hour and 4 minutes during the event. 
April 20, 2010 

Mr. Neil Taylor, Sgt. Brent Peters 

Page 2 

Estimated Quantity ofPollutants Emitted During the Event: 

~VOq(lbs) i 

North Flare 751 

Steps Taken to Control Emissions: 

"When the east blower malfunctioned, the west blower was put online and the unit was restarted. When 

the west blower belt broke, maintenance worked quickly to replace the belt in order to restart the SRU. 

Once the SRU was operational, the east blower was also repaired to ensure the back-up blower was 

available ifneeded. All excess acid gas and sour water gas were combusted in the flare to prevent direct 

venting to the atmosphere. 

Please contact me with any questions or comments at (801) 299-6619. I can be reached by email at 

bo.bothwell@hollycorp.com. 

Sincerely, 

Bo Bothwell 

Environmental Engineering Specialist 

RE 2010-06 SRU (20100409).doc 

CC: M. Astin (r) File S6-2 (4) 

B. Christensen 

J. Crawley 

Holly Refining & Marketing Company - Woods Cross Refinery, 393 South 800 West, Woods Cross, UT 84087·1435, Phone (801) 299-6600, Fax (801) 299-6609 
Hollv Refining and Marketing - Woods Cross Refinery 

Estimate of Emissions During SRU Upset 

Date/Time 

419110 1:20 PM 

4191102:29 PM 2.62 4.31 0.00 1.1500 87% 50% 6% 11.73 751.0 

Total S02 = 751.0 

H2S Concentration Test Acid Gas SWSIASU 

from 01110 CCI 1 51% 88% 

performance test 2 50% 89% 

Dry Basis 3 51% 85% 

4 

5 

6 

Average 50% 87% 

Moisture Content 4.90% 5.50% 

Combined Stream SWSIASU 22V3 

H2S Concentration 82% 6.4% 

from Unit 22 Mat. Bal 

RE 2010-06 SRU Blowers (20100409) 5/7/20101:14 PM
 

Emissions Page 1 of 1
 
HOLLy'
 

REFINING & MARKETING COMPANY - WOODS CROSS 

393 South 800 West. Woods Cross, Utah 84087-1435 

(801) 299-6600 • Fax (801) 299-6609 

April 26, 2010 

Mr. Neil Taylor CERTIFIED MAIL: 7009 3410 0002 36330814 

Div. of Environmental Response & Remediation, SERC 

Utah Department of Environmental Quality 

PO Box 144840, 168 North 1950 West 

Salt Lake City, UT 84116 

Sgt. Brent Peters CERTIFIED MAIL: 7009 3410 0002 3633 0821 

Davis County Sheriff's Department 

Davis County LEPC 

800 W. State Street 

Fannington, UT 84025 

RE: Reportable Event April 12,2010 

Unavoidable breakdown of equipment 

To Whom It May Concern: 

In accordance with the Emergency Planning and Community Right-to-Know Act (EPCRA), 40 CFR Part 

355; and the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) 40 

CFR 302.6, Holly Refining & Marketing Company - Woods Cross Refinery notified your offices of excess 

emissions that resulted from an unavoidable breakdown that affected our Sulfur Recovery Unit (SRU).. 

Notification: Dustin Simmonds notified the State Emergency Response Committee (SERC) and the 

Local Emergency Planning Commission (LEPC) on April 12, 2010. The following table details 

notifications for this event. 

SERC 

LEPC 

Neil Taylor 

Voice mail - Brent Peters 

Reported Event 

Left a message. 

04/12/2010 16:45 

04/12/201016:49 

Affected Units: Ammonia Stripping Unit (Unit 22), Sour Water Stripper (Unit 18), Sulfur Recovery Unit 

(Unit 17), Amine Unit (Unit 16), North Flare 

Cause and Nature of Event: 

On April12, 2010 the level indication in the Ammonia Stripping Unit scrubber 22V1 malfunctioned. 

The level in the co1unm increased and liquid carried over into the sour water knock~out drum in the SRU. 

The liquid carry over pressured up the SRU and interlocked the unit. During the shutdown of the unit 

acid gas and sour water gas were sent to the flare. 

Duration ofEvent: Acid gas and sour water gas were routed to the North Flare on April 9, 2010 from 13:59 

to 16:21. The total duration ofthe event was 2 hours and 22 minutes. Acid gas was sent to the flare for a 

total of22 minutes and sour water gas was sent to the flare for a total of 1 hour and 50 minutes during the 

event. 
April 26, 2010 

Mr. Neil Taylor, 8gt Brent Peters 

Page 2 

Estimated Quantity ofPollutants Emitted During the Event: 

North Flare 1723.5 

Steps Taken to Control Emissions: 

Operations responded and emptied the knock out pot and lowered the liquid level in 22V1. Maintenance 

was performed to correct the level indication on 22V1 and alternative level control methods are currently 

being evaluated. All excess acid gas and sour water gas were combusted in the flare to prevent direct 

venting to the atmosphere. 

Please contact me with any questions or comments at (801) 299-6619. I can be reached by email at 

boobothwell@hollycorp.com. 

Sincerely, 

Bo Bothwell 

Environmental Engineering Specialist 

RE 2010-07 8RU (20100412).doc 

CC: M. Astin (r) File 86-2 (4) 

B. Christensen 

1. Crawley 

Holly Refining & Marketing Company- Woods Cross Refinery. 393 South 800 West, Woods Cross, UT 84087·1435, Phone (801) 299~600, Fax (801) 299~609
Hollv Refining and Marketing - Woods Cross Refinery 

Estimate of Emissions During SRU Upset 

Date/Time 

4112/101:59 PM 

4112/104:21 PM 10.01 1.50 11.69 2.3667 87% 50% 6% 26.93 

Total S02 = 

1723.5 

1723.5 

H2S Concentration 

from 01110 CCI 

performance test 

Dry Basis 

Test 

1 

2 

3 

4 

5 

6 

Average 

Acid Gas 

51% 

50% 

51% 

50% 

SWS/ASU 

88% 

89% 

85% 

87% 

Moisture Content 4.90% 5.50% 

Combined Stream 

H2S Concentration 

from Unit 22 Mat. Bal 

SWS/ASU 

82% 

22V3 

6.4% 

RE 2010-07 SRU (20100412) 5/7/20101:15 PM
 

Emissions Page 1 of 1