1

Schaffner, Karen S.

From: Herman, Michelle L [Michelle.Herman@chevron.com]

Sent: Tuesday, May 18, 2010 2:22 PM

To: Shedd.Steve@epamail.epa.gov

Cc: Schaffner, Karen S.

Subject: RE: RTR MVL: follow-up question onf TX Unocal MVL terminal

Attachments: MACT Y 2005 Data.pdf

Sorry it took so long. Please see attached. 

Michelle Herman 

Environmental Specialist 

Chevron Pipe Line Company 

Highway 366, P.O. Box 237 

Nederland, TX 77627 

Tel 409 724 3321 

Mobil 409 651 0708 

Fax 409 724 3254 

Michelle.Herman@chevron.com

-----Original Message----- 

From: Shedd.Steve@epamail.epa.gov [mailto:Shedd.Steve@epamail.epa.gov] 

Sent: Tuesday, May 18, 2010 8:37 AM 

To: Herman, Michelle L 

Cc: Schaffner, Karen S. 

Subject: RE: RTR MVL: follow-up question onf TX Unocal MVL terminal 

Michelle 

 Thank you so much for all your help. Can you share the 2005 

estimates as well? Your current data sheets are very helpful. It will 

help us at least report the information in consistent years 

Stephen Shedd, Coatings and Chemicals Group, (E143-01) Sector Policies and Programs Division, 

Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, Research 

Triangle Park, NC 27707 

Voice: 919 541-5397 Fax: 919 685-3195 

 

 From: "Herman, Michelle L" <Michelle.Herman@chevron.com> 

 

 To: "Schaffner, Karen S." <ksschaffner@rti.org> 

 

 Cc: Steve Shedd/RTP/USEPA/US@EPA 

 

 Date: 05/17/2010 04:20 PM 

 

 Subject: RE: RTR MVL: follow-up question onf TX Unocal MVL terminal 

 
2

Hi Karen, 

I believe I made a clerical error when submitting the information for tons/yr and it was 

uncontrolled which I was thinking you were asking for. I apologize if this caused you any 

inconvenience. I have attached a summary for 2009 that better breaks down the HAP emissions.

I went back and looked at the 2005 data and can’t match my data to yours. Can you tell which 

reporting year the data is for and if it was just the MVL? 

I hope this attachment helps. 

Michelle Herman 

Environmental Specialist 

Chevron Pipe Line Company 

Highway 366, P.O. Box 237 

Nederland, TX 77627 

Tel 409 724 3321 

Mobil 409 651 0708 

Fax 409 724 3254 

Michelle.Herman@chevron.com

From: Schaffner, Karen S. [mailto:ksschaffner@rti.org] 

Sent: Monday, May 17, 2010 1:44 PM 

To: Herman, Michelle L 

Cc: Shedd.Steve@epamail.epa.gov 

Subject: RTR MVL: follow-up question onf TX Unocal MVL terminal 

Hi Michelle: Thank you for sharing additional information on the MVL operations at the 

Unocal Beaumont Terminal, Nederland TX facility. We do have an additional question about the 

HAPs emitted. You indicated in your notes last week that “MVL only” HAP emissions were 108 

ton/yr in 2009. 

The latest data EPA has is from the 2005 NEI/NATA database with “MVL only” HAP emissions of 

36.78 ton, with speciation of: 

Ethylbenzene: 0.2 

Ethylene glycol: 0.000021504 

Hexane: 0.82 

MTBE: 24.63 

Naphthalene: 7.8 

Toluene 0.15 

Xylenes: 3.18 

Would it be possible to share the HAP speciation for the current 108 ton/yr HAP emissions 

estimate? We are interested in understanding the HAP compounds emitted, whether the 2005 

compounds are still an appropriate mix of HAP emitted or whether they have changed over time, 

e.g., use of MTBE is declining as other oxygenates are used. Thank you, Karen 

Karen Schaffner 

Air Quality Engineering Group 

RTI International 

3040 Cornwallis Rd (800 Park, C311) 
3

Research Triangle Park, NC 27709 

phone: (919) 316 3740 

fax: (919) 541 7155[attachment 

"CY2009_LoadingCalcs_MACT_Y_AnnualReport.pdf" deleted by Steve Shedd/RTP/USEPA/US] 
UNION OIL COMPANY OF CALIFORNIA

BEAUMONT TERMINALMACT Y ANNUAL REPORT - CALENDAR YEAR 2009

MARINE VESSEL LOADING EMISSION RATE CALCULATIONS 

EMISSION ESTIMATE FOR MARINE LOADING

EMISSION FACTOR EQUATIONS

L = 12.46 S P M (AP-42, Fifth Edition, Equation 5.2-1) where: L = Loading loss (lb/1000 gal liquid loaded)

 T CL = Loading loss for crude oil (lb/1000 gal liquid loaded)

or, for crude oil: M = Vapor molecular weight of liquid loaded (lb/lb-mol)

CL = CA + CG (AP-42, Fifth Edition, Equation 5.2-2) P = True vapor pressure of liquid loaded (psia)

CG = 1.84(0.44P - 0.42)1.02M (AP-42, Fifth Edition, Equation 5.2-3) T = Temperature of bulk liquid loaded (°R)

T S = Saturation factor (0.5 for submerged barge loading, from Table 5.2-1)

L = 3.9 for gasoline loading into uncleaned barges, (Table 5.2-2)

CA = Arrival emission factor (0.86 for crude oil loading into uncleaned ships/ocean barges, from 

EMISSIONS* CG = Loading loss (lb/1000 gal liquid loaded) for crude oil

Vapor Control Control 

Saturation or Average Mol. Vapor Loading Capture Destruction Loading 

Loading Liquid Type of Arrival Factor Temp. Wt. Pressure Loss Efficiency (a) Efficiency (b) Rate 

Vessel Loaded Loading S or CA (°F) (°R) (lb/lb-mol) (psia) (lb/1000 gal) (%) (%) (bbl) 

Barge Gasoline & Blend Stock submerged 0.5 70 530 62.00 6.2 4.52 100.00% 99.91% 143,306 

Ship Gasoline & Blend Stock submerged 0.2 60 520 62.00 5.2 1.55 100.00% 99.91% 121,727 

Barge MTBE submerged 0.5 0 460 88.14 0.00 0.00 100.00% 99.91% 0 

Ship MTBE submerged 0.2 78 538 88.14 4.96 2.02 100.00% 99.91% 3,367,038 

Barge Petroleum Naphtha submerged 0.5 77 537 80.00 4.31 4.00 100.00% 99.91% 1,590,649 

Ship Petroleum Naphtha submerged 0.2 84 544 80.00 2.92 1.07 100.00% 99.91% 220,072 

Barge Reformate submerged 0.5 0 460 80.00 0.00 0.00 100.00% 99.91% 0 

Ship Reformate submerged 0.2 58 518 80.00 0.75 0.29 100.00% 99.91% 43,252 

Barge Crude Oil submerged 0.86 76 536 50.00 4.92 1.17 100.00% 99.91% 5,230,591 

Ship Crude Oil submerged 0.86 0 460 50.00 0 0.77 100.00% 99.91% 0 

Barge Cyclohexane submerged 0.5 56 516 84.16 0.00 0.00 100.00% 99.91% 0 

Ship Cyclohexane submerged 0.2 56 516 84.16 0.00 0.00 100.00% 99.91% 0 

Barge Alkylate submerged 0.5 0 460 80.00 0.00 0.00 100.00% 99.91% 0 

Ship Alkylate submerged 0.2 58 518 80.00 5.21 2.01 100.00% 99.91% 24,898 

Ship Cumene submerged 0.2 57 517 80.00 0.200 0.08 100.00% 99.91% 50,246 

Barge Condensate submerged 0.5 0 460 80.00 0 0.00 100.00% 99.91% 0 

Ship Condensate submerged 0.2 0 460 80.00 0 0.00 100.00% 99.91% 0 

Annual Totals 10,791,779 

(a) The capture efficiency is based on the TCEQ's Air Permit Technical Guidance for Chemical Sources: Loading Operations document (draft dated October 2000).

(b) The control destruction efficiency is based on the initial performance test conducted on January 20 and 21, 2000.Sample calculations:MTBE

Loading loss = 12.46 S P M

 T

= (12.46) (0.50) (0.000 psia) (88.14 lb/lb-mol) = 0.00 lb/1000 gal loaded

 (460 °R)

Annual VCU emissions = (Loading loss emission factor) (Annual loading rate)(Fraction captured)(Fraction not destroyed)

= (0.00 lb/1000 gal) (ton/ 2000 lb) (0 bbl/yr) (42 gal/bbl)(1 fraction captured)(0.0009 fraction not destroyed)= 0.00 tons/yr

Annual fugitive emissions = (Loading loss emission factor) (Annual loading rate) (Fraction not captured)

= (0.00 lb/1000 gal) (ton/ 2000 lb) (0 bbl/yr) (42 gal/bbl) (0 fraction not captured)= 0.00 tons/yr

The seal appearing on this document was Joerg Windolph, P.E. 85630 on January 2of a sealed document without proper notiresponsible engineer is an offense under Practice Act.

Page 1 of 3
UNION OIL COMPANY OF CALIFORNIA

BEAUMONT TERMINALMACT Y ANNUAL REPORT - CALENDAR YEAR 2009

MARINE VAPOR CONTROL SYSTEM

HAZARDOUS AIR POLLUTANT EMISSION SUMMARY

CAS Gasoline Methanol MTBE Naphtha Reformate Crude Oil Cyclohexane Alkylate Cumene Condensate TotalNo. HAP (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr)

71432 Benzene 3.23E-04 0 0 4.30E-03 3.52E-05 4.25E-03 0 1.72E-05 0 0 0.009

98828 Cumene 0.00E+00 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0.0001 0 0.0

110827 Cyclohexane 0.00E+00 0 0 0.00E+00 0.00E+00 4.45E-03 0 0.00E+00 0 0 0.004100414 Ethylbenzene 9.60E-05 0 0 1.35E-03 0.00E+00 3.50E-04 0 0.00E+00 0 0 0.002110543 Hexane 0.00E+00 0 0 0.00E+00 0.00E+00 1.35E-02 0 0.00E+00 0 0 0.014

1634044 MTBE 2.59E-03 0 0.129 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.132

91203 Naphthalene 0.00E+00 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

95636 Pseudocumene 0.00E+00 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

108883 Toluene 3.76E-04 0 0 5.13E-03 0.00E+00 7.56E-04 0 0.00E+00 0 0 0.006

540841 2,2,4-Trimethylpentane 0.00E+00 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

1330207 Xylene 2.85E-05 0 0 1.60E-03 0.00E+00 3.11E-04 0 0.00E+00 0 0 0.002

75650 Methanol 0 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

Other VOC 1.26E-02 0 0 1.12E-01 1.65E-04 9.24E-02 0 9.83E-04 0 0 0.218

HAP Emission Summary - Thermal Oxidizer

 Page 2 of 3
UNION OIL COMPANY OF CALIFORNIA

BEAUMONT TERMINALMACT Y ANNUAL REPORT - CALENDAR YEAR 2009

MARINE VAPOR CONTROL SYSTEM

HAZARDOUS AIR POLLUTANT EMISSION SUMMARY

Source

Controlled HAP 

Emissions (ton/yr)

Control 

Efficiency 

(%)

HAP Emissions 

Before Control 

(ton/yr)

Thermal Oxidizer 0.165 99.91% 183.333Loading Fugitives 0 0.00% 0.000Total 0.165 183.333

HAP Control Efficiency: 99.91%

HAP Control Efficiency = 1 - (0.165/183.333)

Note: Cyclohexane is not a HAP, and is therefore not included in the HAP totals.

HAP Control Efficiency

Page 3 of 3
UNOCAL BEAUMONT TERMINAL

MACT Y ANNUAL REPORT - CALENDAR YEAR 2005

MARINE VESSEL LOADING EMISSION RATE CALCULATIONS JANUARY 25, 2006

M:\ENV\THERMAL OX\

MACT Y 2005 Data.xlsx Emissions Page 1 of 1 Printed 5/18/2010 1:12 PM

EMISSION ESTIMATE FOR MARINE LOADING

EMISSION FACTOR EQUATIONS

L = 12.46 S P M (AP-42, Fifth Edition, Equation 5.2-1) where: L = Loading loss (lb/1000 gal liquid loaded)

 T CL = Loading loss for crude oil (lb/1000 gal liquid loaded)

or, for crude oil: M = Vapor molecular weight of liquid loaded (lb/lb-mol)

CL = CA + CG (AP-42, Fifth Edition, Equation 5.2-2) P = True vapor pressure of liquid loaded (psia)

CG = 1.84(0.44P - 0.42)1.02M (AP-42, Fifth Edition, Equation 5.2-3) T = Temperature of bulk liquid loaded (°R)

T S = Saturation factor (0.5 for submerged barge loading, from Table 5.2-1)

L = 3.9 for gasoline loading into uncleaned barges, (Table 5.2-2)

CA = Arrival emission factor (0.86 for crude oil loading into uncleaned ships/ocean barges, from Table 5.2-3)

EMISSIONS* CG = Loading loss (lb/1000 gal liquid loaded) for crude oil

Vapor Control Control Fugitive VOC Oxidizer VOC

Saturation or Average Mol. Vapor Loading Capture Destruction Loading Loading Loading

Loading Liquid Type of Arrival Factor Temp. Wt. Pressure Loss Efficiency (a) Efficiency (b) Rate Emissions Emissions

Vessel Loaded Loading S or CA (°F) (°R) (lb/lb-mol) (psia) (lb/1000 gal) (%) (%) (bbl) (tons) (tons)

Barge Gasoline & Blend Stock submerged 0.5 77.25 537.25 62.00 3.35 2.41 100.00% 99.91% 269,109 0.00 0.012

Ship Gasoline & Blend Stock submerged 0.2 83 543 62.00 4.63 1.32 100.00% 99.91% 2,598 0.00 0.0001

Barge Methanol submerged 0.5 63 523 32.04 1.6 0.61 100.00% 99.91% 0 0.00 0.00

Ship Methanol submerged 0.2 63 523 32.04 1.6 0.24 100.00% 99.91% 0 0.00 0.00

Barge MTBE submerged 0.5 79.1 539.1 88.14 5.64 5.74 100.00% 99.91% 4,816,158 0.00 0.523

Ship MTBE submerged 0.2 71.95 531.95 88.14 4.81 1.99 100.00% 99.91% 1,048,817 0.00 0.039

Barge Petroleum Naphtha submerged 0.5 71.9 531.9 80.00 2.56 2.40 100.00% 99.91% 2,570,750 0.00 0.117

Ship Petroleum Naphtha submerged 0.2 63.83 523.83 80.00 1.31 0.50 100.00% 99.91% 525,231 0.00 0.005

Barge Reformate submerged 0.5 73.3 533.3 80.00 1.94 1.81 100.00% 99.91% 324,465 0.00 0.0111

Ship Reformate submerged 0.2 73.5 533.5 80.00 0.62 0.23 100.00% 99.91% 86,556 0.00 0.00

Barge Crude Oil submerged 0.86 74.32 534.32 50.00 5.04 1.18 100.00% 99.91% 4,077,352 0.00 0.091

Ship Crude Oil submerged 0.86 75.08 535.08 50.00 3.44 1.05 100.00% 99.91% 296,285 0.00 0.01

Barge Cyclohexane submerged 0.5 56 516 84.16 1.12 1.13 100.00% 99.91% 0 0.00 0.0000

Ship Cyclohexane submerged 0.2 56 516 84.16 1.12 0.45 100.00% 99.91% 0 0.00 0.00

Barge Alkylate submerged 0.5 72 532 80.00 2.35 2.20 100.00% 99.91% 0 0.00 0.000

Ship Alkylate submerged 0.2 66 526 80.00 3.09 1.17 100.00% 99.91% 77,904 0.00 0.002

Ship Xylene submerged 0.2 65 525.0453927 80.00 0.115 0.04 100.00% 99.91% 0 0.00 0.0000

Barge Condensate submerged 0.5 75.07 535.07 80.00 7.61 7.09 100.00% 99.91% 426,267 0.00 0.06

Ship Condensate submerged 0.2 63 523 80.00 11 4.19 100.00% 99.91% 0 0.00 0.00

Annual Totals 14,521,492 0.00 0.863

(a) The capture efficiency is based on the TCEQ's Air Permit Technical Guidance for Chemical Sources: Loading Operations document (draft dated October 2000).

(b) The control destruction efficiency is based on the initial performance test conducted on January 20 and 21, 2000.

Sample calculations:

MTBE

Loading loss = 12.46 S P M

 T

= (12.46) (0.50) (5.640 psia) (88.14 lb/lb-mol) = 5.74 lb/1000 gal loaded

 (539 °R)

Annual VCU emissions = (Loading loss emission factor) (Annual loading rate)(Fraction captured)(Fraction not destroyed)

= (5.74 lb/1000 gal) (ton/ 2000 lb) (4,816,158 bbl/yr) (42 gal/bbl)(1 fraction captured)(0.0009 fraction not destroyed)

= 0.52 tons/yr

Annual fugitive emissions = (Loading loss emission factor) (Annual loading rate) (Fraction not captured)

= (5.74 lb/1000 gal) (ton/ 2000 lb) (4,816,158 bbl/yr) (42 gal/bbl) (0 fraction not captured)

= 0.00 tons/yr

The seal appearing on this document was authorized by

Joerg Windolph, P.E. 85630 on January 30, 2006. Alteration

of a sealed document without proper notification to the 

responsible engineer is an offense under the Texas Engineering

Practice Act.
UNOCAL BEAUMONT TERMINAL

MACT Y ANNUAL REPORT - CALENDAR YEAR 2005

MARINE VAPOR CONTROL SYSTEM

HAZARDOUS AIR POLLUTANT EMISSION SUMMARY

JANUARY 25, 2006

M:\ENV\THERMAL OX\

MACT Y 2005 Data.xlsx Emission Summary - Ox Page 1 of 1 Printed 5/18/2010 1:12 PM

CAS Gasoline Methanol MTBE Naphtha Reformate Crude Oil Cyclohexane Alkylate Xylene Condensate Total

No. HAP (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr)

71432 Benzene 5.41E-04 0 0 6.23E-03 1.14E-03 3.44E-03 0 7.20E-05 0 0 0.011

98828 Cumene 0.00E+00 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

110827 Cyclohexane 0.00E+00 0 0 0.00E+00 0.00E+00 3.61E-03 0 0.00E+00 0 0 0.004

100414 Ethylbenzene 1.69E-04 0 0 1.88E-03 0.00E+00 2.83E-04 0 0.00E+00 0 0 0.002

110543 Hexane 0.00E+00 0 0 0.00E+00 0.00E+00 1.10E-02 0 0.00E+00 0 0 0.011

1634044 MTBE 4.27E-03 0 0.56228699 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.567

91203 Naphthalene 0.00E+00 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

95636 Pseudocumene 0.00E+00 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

108883 Toluene 6.43E-04 0 0 7.31E-03 0.00E+00 6.12E-04 0 0.00E+00 0 0 0.009

540841 2,2,4-Trimethylpentane 0.00E+00 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

1330207 Xylene 4.99E-05 0 0 2.23E-03 0.00E+00 2.51E-04 0 0.00E+00 0 0 0.003

75650 Methanol 0 0 0 0.00E+00 0.00E+00 0.00E+00 0 0.00E+00 0 0 0.0

Other VOC 6.33E-03 0 0 1.04E-01 9.96E-03 8.18E-02 0 1.93E-03 0 0 0.204

HAP Emission Summary - Thermal Oxidizer
UNOCAL BEAUMONT TERMINAL

MACT Y ANNUAL REPORT - CALENDAR YEAR 2005

MARINE VAPOR CONTROL SYSTEM

HAZARDOUS AIR POLLUTANT EMISSION SUMMARY

JANUARY 25, 2006

M:\ENV\THERMAL OX\

MACT Y 2005 Data.xlsx HAP Control Efficiency Page 1 of 1 Printed 5/18/2010 1:12 PM

Source

Controlled HAP 

Emissions (ton/yr)

Control 

Efficiency 

(%)

HAP Emissions 

Before Control 

(ton/yr)

Thermal Oxidizer 0.602407889 99.91% 669.342

Loading Fugitives 0 0.00% 0.000

Total 0.602407889 669.3420989

HAP Control Efficiency: 99.91%

HAP Control Efficiency = 1 - (0.60240788905405/669.342098948936)

Note: Cyclohexane is not a HAP, and is therefore not included in the HAP totals.

HAP Control Efficiency