Technical Memorandum 

TO: Brenda Shine, Refining and Chemicals Group, SPPD 

FROM: Eric Goehl, Environmental Protection Specialist 

Refining and Chemicals Group, SPPD (E143-01) 

DATE: July 11, 2012 

SUBJECT: Summary of Cooling Water Systems Emission Source Test Reports 

I. Purpose 

The objective of this document is to provide a summary of the cooling water systems 

emission source test reports received by the EPA from the 2011 Information Collection Request 

(ICR) of the petroleum refinery industry. 

II. Background 

On April 1, 2011, the EPA sent an ICR to facilities in the U.S. petroleum refining 

industry. The ICR was comprehensive and designed to collect information on processing 

characteristics, crude slate characteristics, emissions inventories and source testing to bolster our 

current data and fill known data gaps. The ICR had four components: (1) a questionnaire on 

processes and controls to be completed by all petroleum refineries (Component 1); (2) an 

emissions inventory to be developed by all petroleum refineries using the emissions estimation 

protocol developed for this effort (Component 2); (3) distillation feed sampling and analysis to 

be conducted by all petroleum refineries (Component 3); and (4) emissions source testing to be 

completed in accordance with an EPA-approved protocol for specific sources at specific 

petroleum refineries (Component 4). 

Component 4 of the ICR requested source testing for twelve different types of emission 

sources or units: fluid catalytic cracking units (FCCU), thermal catalytic cracking units, catalytic 

reforming units, sulfur recovery units, delayed coking units, fluid coking units, hydrocracking 

units, hydrogen plants, asphalt blowing units, fuel gas systems, cooling water systems, and 

wastewater treatment systems. This memorandum summarizes the results of the cooling water 

systems source tests. A similar memorandum is available for the other emission sources required 

to be tested as a result of this ICR. 
2 

Facilities often claimed specific process information as CBI, and included that 

information in the CBI version of the emission source test report stored in the EPA’s CBI office 

in Research Triangle Park, NC. However, emissions data cannot be claimed as CBI. This 

memorandum summarizes and presents only non-CBI data. 

III. Source-specific Testing Program 

Below is a list of facilities required to test their cooling water systems: 

• Suncor Energy (U.S.A.) Inc. Commerce City Refinery – Commerce City, CO 

(CO4A0340) 

• Alon USA Krotz Springs Refinery – Krotz Springs, LA (LA3C0700) 

• Western Refining Gallup Refinery – Jamestown, NM (NM3E0880) 

• Wynnewood Refining Company – Wynnewood, OK (OK2C0960) 

• United Refining Co – Warren, PA (PA1B1050) 

• Valero McKee Refinery – Sunray, TX (TX3A1300) 

• Pasadena Refining System Inc. – Pasadena, TX (TX3B1150) 

• Holly Refining & Marketing Company - Woods Cross Refinery – Woods Cross, UT 

(UT4A1380) 

• BP West Coast Products LLC – Blaine, WA (WA5A1400) 

• Murphy Oil USA, Inc. Superior Refinery – Superior, WI (WI2B1460) 

• Frontier Refining, Inc. – Cheyenee, WY (WY4A1470) 

Owners or operators of the cooling water systems at these facilities were required to test 

for total strippable volatile organic compounds (VOC) using Modified El Paso Method (Air 

Stripping Method for Determination of Volatile Organic Compound Emissions from Water 

Sources, Revision Number One, dated January 2003, Sampling Procedures Manual, Appendix P: 

Cooling Tower Monitoring, prepared by Texas Commission on Environmental Quality, January 

31, 2003). Following Modified El Paso testing, additional testing was performed on the cooling 

water system with the highest total strippable hydrocarbon concentration, except for the 

following situations: if more than one cooling water system return line had total strippable 

hydrocarbon concentration greater than 62 ppmv, then the facility conducted additional testing 

for all cooling water systems that had a return line concentration greater than 62 ppmv; and if 

none of the cooling water system return lines had a total strippable hydrocarbon concentration 
3 

greater than or equal to 3 ppmv, then the facility conducted additional testing only for HCl and 

Cl2 for any one cooling water system return line. The additional testing included: 

• Speciated volatile organic hazardous air pollutants (HAP) 

• Speciated semi-volatile organic HAP 

• Formaldehyde 

• Total hydrocarbons 

• Methane 

• Hydrogen chloride and chlorine 

A summary of the testing each facility conducted is provided in Table 1. It appears that 

four facilities did not provide the results of Modified El Paso Method testing (NM3E0880, 

OK2C0960, WI2B1460, WY4A1470); however, these facilities did conduct other cooling water 

analysis. 

Additional detail of the source testing requirements for the cooling water systems sources 

can be found at http://www.epa.gov/ttn/atw/petref/petrefpg.html. 

The EPA required that the data collected from the emission source testing to be reported 

using the EPA Electronic Reporting Tool (ERT). The ERT is a Microsoft® Access database 

application. If the facility conducted testing using a method not currently supported by the ERT, 

such as the required testing for cooling towers, the facility was required to report the results in 

the Refinery Testing Supplement, a Microsoft® Excel spreadsheet. After completing the 

Refinery Testing Supplement, the refineries were also asked to submit an electronic copy of the 

emission test report, preferably in PDF format. 

IV. Results 

A list of the cooling water systems that were tested is provided in Table 2, and a 

summary of the emission results for the cooling water systems are provided in Table 3. In order 

to better characterize the reported data from the emission test reports, detection level information 

was provided in the attached summary spreadsheet. The following designations were used to 

describe the detection levels of the reported emissions data. 

• DLL = Detection Level Limited = 1 or 2 runs below detection limit 

• BDL = Below Detection Limit = All three runs are below detection limit 

• No designation = All three runs are above detection limit
Table 1. Testing Conducted by Petroleum Refinery Facilities on Cooling Water Systems 

Air 

Facility 

Modified 

El Paso 

Speciated 

Volatile 

Organic HAP 

(TO-15 or TO14A) 

Speciated 

Semi-Volatile 

Organic HAP 

(TO-13A) 

Formaldehyde 

(TO-5 or TO11A) THC (TO-12) 

CH4 

(Method 

18 or 320) 

HCl, Cl2

(Method 

26 or 26A)

Vol

H

(CO4A0340) Suncor Energy (U.S.A.) Inc. Commerce City Refinery – Commerce City 

X X X X X X X 

(LA3C0700) Alon USA Krotz Springs Refinery – Krotz Springs 

X X X X (TO-11) X (mod. TO-14A) X X 

(NM3E0880) Western Refining Gallup Refinery – Jamestown 

 X X (8270) X X X X X (

(OK2C0960) Wynnewood Refining Company – Wynnewood 

 X X X X X X 

(PA1B1050) United Refining Co – Warren X X X X (TO-11) X X (ASTM D-1945) X (TX3A1300) Valero McKee Refinery – Sunray X X (TX3B1150) Pasadena Refining System Inc. – Pasadena 

X X 

(UT4A1380) Holly Refining & Marketing Company - Woods Cross Refinery – Woods Cross 

X X X X X X X (

(WA5A1400) BP West Coast Products LLC – Blaine X X (WI2B1460) Murphy Oil USA X X X X X X  (WY4A1470) Frontier Refining X 
Table 2. Cooling Water Testing Data Summary for Petroleum Refineries 

Facility ID Test Date Cooling Tower ID (HE System) 

Recirculation 

rate, gpm 

CT W

Make-up 

gpm 

CO4A0340 6/8/2011 Y-2 (Plant 3 Cooling Tower Y-2) 3,500 50 CO4A0340 6/9/2011 Y-1 (Plant 1 Cooling Tower Y-1) 50,000 50CO4A0340 6/9/2011 Y-3 (Plant 1 Cooling Tower Y-3) 50,000 50CO4A0340 6/9/2011 Y-4 (Plant 1 Cooling Tower Y-4) 50,000 50CO4A0340 6/8/2011 P2CT-1 (Plant 2 Cooling Tower) 20,000 26LA3C0700 8/31/2011 8206 (FCC Unit Cooling Tower) NA NA LA3C0700 8/31/2011 8006 (Crude Unit Cooling Tower) * NA NA NM3E0880 7/27/2011 CT-1 and CT-2 * 9,000 15OK2C0960 08/08/2011 Hydrocracker (Hydrocracker Cooling Tower) * 70,000 35 PA1B1050 08/18/2011 West (sources from West side of plant) * 4,500 16PA1B1050 08/18/2011 East (sources from East and West side of plant - return line 1) 19,700 59PA1B1050 08/18/2011 East (sources from East and West side of plant - return line 2) 19,700 59TX3A1300 05/18/2011 Gas Plant CWT (East return F-21) 41,770 44TX3A1300 05/18/2011 CWT No. 1 (West return F-20) 62,300 34TX3A1300 05/18/2011 CWT No. 2 (North return F-47) 15,000 43TX3A1300 05/18/2011 CWT No. 2 (South return F-47) 15,000 43TX3A1300 08/26/2011 CWT No. 1 (East return F-20) 62,300 34TX3B1150 8/23/2011 CTWFUALK (for Alky 1 and Alky 2) 22,000 55TX3B1150 8/23/2011 CTWFUCPX (for Coker, Crude, FCC, Hydrotreater, Light Oil, 

LPG, Reformer No. 3, SRU, Szorb) 

50,000 1,56

TX3B1150 8/23/2011 CTWFUMTB (for UDEX) 6,000 90 UT4A1380 8/2/2011 4 4,975 62 UT4A1380 8/2/2011 6 4,116 39 UT4A1380 8/2/2011 7 2,910 31 UT4A1380 8/2/2011 8 9,219 12UT4A1380 8/4/2012 11 * 4,189 74 
6 

Facility ID Test Date Cooling Tower ID (HE System) 

Recirculation 

rate, gpm 

CT W

Make-up 

gpm 

WA5A1400 7/22/2011 CT-1 (West Riser) 48,167 1,94WA5A1400 7/22/2011 CT-1 (East Riser) 32,561 1,94WA5A1400 7/22/2011 CT-2 47,667 10 WI2B1460 6/14/2011 CT1 (for Green Gas Unit, FCCU, Alky Unit) * 9,000 13WI2B1460 6/15/2011 CT2 (Crude Unit, DUFs, Hydrobons, Platformer, SRU, Isom 

Unit, Tail Gas Treatment Unit, Benzene Splitter) * 

10,500 14

WY4A1470 8/19/2011 CT No.2 314 4 WY4A1470 8/19/2011 CT No.2 314 4 * Facility required to conduct detailed testing for these cooling towers. 
7 

Table 3. Cooling Water Testing Data Summary for Petroleum Refineries

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

CO4A0340 Y-2 THC Total 

strippable 

VOC 

 1.52 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 32 

CO4A0340 Y-1 THC Total 

strippable 

VOC 

 0.03 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 32 

CO4A0340 Y-3 THC Total 

strippable 

VOC 

 0.39 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 32 

CO4A0340 Y-4 THC Total 

strippable 

VOC 

 0 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 32 

CO4A0340 P2CT-1 * THC Total 

strippable 

VOC 

 5.29 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 32 

CO4A0340 P2CT-1 * Methan

e 

 Hydrocarbo

n 

 5.49 ppmvd 18 16.4 29.9 2500 125 32 

CO4A0340 P2CT-1 * THC Surrogate 0.332 ppmvd 12 16.4 29.9 2500 125 32 CO4A0340 P2CT-1 * HCl Other 

Inorganic 

HAP 

 0.28 ppmvd 26 36.46 29.9 2500 125 32 

CO4A0340 P2CT-1 * Chlorine Other 

Inorganic 

HAP 

< 0.1 ppmvd BDL 26 70.91 29.9 2500 125 32 

CO4A0340 P2CT-1 * Acetone ** Volatile 

Organic 

HAP 

 0.116 ppmvd TO-15 58.08 29.9 2500 125 32 

CO4A0340 P2CT-1 * Acrolein Volatile 

Organic 

HAP 

 0.0463 ppmvd TO-15 56.06 29.9 2500 125 32 

CO4A0340 P2CT-1 * Benzene Volatile 

Organic 

HAP 

 0.0295 ppmvd TO-15 78.11 29.9 2500 125 32 

CO4A0340 P2CT-1 * 1,3-

Butadien

e 

 Volatile 

Organic 

HAP 

 0.0018 ppmvd TO-15 54.09 29.9 2500 125 32 
8 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

CO4A0340 P2CT-1 * Carbon 

disulfide 

 Volatile 

Organic 

HAP 

 0.00207 ppmvd TO-15 76.14 29.9 2500 125 32 

CO4A0340 P2CT-1 * 

nHexane 

Volatile 

Organic 

HAP 

 0.21 ppmvd TO-15 86.18 29.9 2500 125 32 

CO4A0340 P2CT-1 * Methyle

ne 

chloride 

 Volatile 

Organic 

HAP 

 0.00232 ppmvd TO-15 84.93 29.9 2500 125 32 

CO4A0340 P2CT-1 * Toluene Volatile 

Organic 

HAP 

 0.00305 ppmvd TO-15 92.14 29.9 2500 125 32 

CO4A0340 P2CT-1 * Formald

ehyde 

 Volatile 

Organic 

HAP 

< 0.002 ppmvd BDL TO-11A 30.03 29.9 2500 125 32 

LA3C0700 8206 THC Total 

strippable 

VOC 

< 0.2043 ppmvd BDL Modified 

El Paso 

16.4 29.9 2500 125 40 

LA3C0700 8006 * THC Total 

strippable 

VOC 

 223.17 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 41 

LA3C0700 8006 * Methan

e 

 Hydrocarbo

n 

 45.23 ppmvd 18 16.4 29.9 2500 125 41 

LA3C0700 8006 * THC 

(NMOC, 

as 

propane

) 

 Surrogate 347 ppmvd modified 

TO-14A 

16.4 29.9 2500 125 41 

LA3C0700 8006 * HCl Other 

Inorganic 

HAP 

 3.15 ppmvd 26 36.46 29.9 2500 125 41 

LA3C0700 8006 * Chlorine Other 

Inorganic 

HAP 

 3.58 ppmvd 26 70.91 29.9 2500 125 41 

LA3C0700 8006 * Benzene Volatile 

Organic 

HAP 

 0.383 ppmvd TO-15 78.11 29.9 2500 125 41 

LA3C0700 8006 * Carbon 

disulfide 

 Volatile 

Organic 

HAP 

 0.026 ppmvd TO-15 76.14 29.9 2500 125 41 
9 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

LA3C0700 8006 * Ethylben

zene 

 Volatile 

Organic 

HAP 

 0.095 ppmvd TO-15 106.17 29.9 2500 125 41 

LA3C0700 8006 * nHexane Volatile Organic 

HAP 

 1.733 ppmvd TO-15 86.18 29.9 2500 125 41 

LA3C0700 8006 * Pentane ** Volatile 

Organic 

HAP 

 1.443 ppmvd TO-15 72.15 29.9 2500 125 41 

LA3C0700 8006 * Toluene Volatile 

Organic 

HAP 

 0.548 ppmvd TO-15 92.14 29.9 2500 125 41 

LA3C0700 8006 * Xylenes 

(mixed) 

 Volatile 

Organic 

HAP 

 0.988 ppmvd TO-15 106.17 29.9 2500 125 41 

LA3C0700 8006 * Formald

ehyde 

 Volatile 

Organic 

HAP 

 0.23 ppmvd TO-11 30.03 29.9 2500 125 41 

NM3E0880 CT-1 and 

CT-2 * 

THC Surrogate 113.9 ppmvd TO-12 16.4 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

Methan

e 

 Hydrocarbo

n 

< 1.00 ppmvd BDL 18 16.4 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

HCl Other 

Inorganic 

HAP 

< 0.027 ppmvd BDL 26 36.46 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Chlorine Other 

Inorganic 

HAP 

< 0.077 ppmvd DLL 26 70.91 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

1,3-

Butadien

e 

 Volatile 

Organic 

HAP 

< 0.000333 ppmvd DLL TO-15 54.09 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Pentane ** Volatile 

Organic 

HAP 

 1.47 ppmvd TO-15 72.15 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

nHexane Volatile Organic 

HAP 

 1.53 ppmvd TO-15 86.18 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Benzene Volatile 

Organic 

HAP 

 0.20 ppmvd TO-15 78.11 29.9 2500 125 32 
10 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

NM3E0880 CT-1 and 

CT-2 * 

2,2,4-

Trimethy

lpentane 

 Volatile 

Organic 

HAP 

< 0.00233 ppmvd DLL TO-15 114.23 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Toluene Volatile 

Organic 

HAP 

 2.46 ppmvd TO-15 92.14 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Ethylben

zene 

 Volatile 

Organic 

HAP 

 1.17 ppmvd TO-15 106.17 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Xylene 

(m-, p-) 

 Volatile 

Organic 

HAP 

 2.36 ppmvd TO-15 106.17 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Xylene 

(o-) 

 Volatile 

Organic 

HAP 

 0.963 ppmvd TO-15 106.17 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Cumene Volatile 

Organic 

HAP 

 0.000633 ppmvd TO-15 120.19 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Naphtha

lene 

 Volatile 

Organic 

HAP 

 0.0289 ppmvd TO-15 128.17 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Formald

ehyde 

 Volatile 

Organic 

HAP 

 0.0007 ppmvd TO-11A 30.03 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

Naphtha

lene 

 SemiVolatile/No

n-Volatile 

Organic 

HAP 

< 0.00269 ppmvd DLL 8270C 128.17 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

2-

Methyln

aphthale

ne 

 SemiVolatile/No

n-Volatile 

Organic 

HAP 

 0.00998 ppmvd 8270C 142.2 29.9 2500 125 32 

NM3E0880 CT-1 and 

CT-2 * 

Pentane ** Volatile 

Organic 

HAP 

 0.17762 ppmw 6010B, 

6200 

72.15 NA NA NA NA 
11 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

NM3E0880 CT-1 and 

CT-2 * 

Methyle

ne 

chloride 

 Volatile 

Organic 

HAP 

 0.0245 ppmw 6010B, 

6200 

84.93 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

nHexane Volatile Organic 

HAP 

 0.12107 ppmw 6010B, 

6200 

86.18 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

Benzene Volatile 

Organic 

HAP 

 0.0222 ppmw 6010B, 

6200 

78.11 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

Toluene Volatile 

Organic 

HAP 

 0.219 ppmw 6010B, 

6200 

92.14 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

Ethylben

zene 

 Volatile 

Organic 

HAP 

 0.07125 ppmw 6010B, 

6200 

106.17 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

Xylene 

(m-, p-) 

 Volatile 

Organic 

HAP 

 0.193 ppmw 6010B, 

6200 

106.17 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

Xylene 

(o-) 

 Volatile 

Organic 

HAP 

 0.1396 ppmw 6010B, 

6200 

106.17 NA NA NA NA 

NM3E0880 CT-1 and 

CT-2 * 

Styrene Volatile 

Organic 

HAP 

< 0.00493 ppmw DLL 6010B, 

6200 

104.15 NA NA NA NA 
12 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

NM3E0880 CT-1 and 

CT-2 * 

Naphtha

lene 

 Volatile 

Organic 

HAP 

< 0.01547 ppmw DLL 6010B, 

6200 

128.17 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

Methan

e 

 Hydrocarbo

n 

 4.65 ppmvd 18 16.4 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

THC Surrogate 3.44 ppmvd TO-12 16.4 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

Formald

ehyde 

 Aldehydes < 0.000531 ppmvd DLL TO-11A 30.03 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

HCl Other 

Inorganic 

HAP 

< 0.00647 ppmvd BDL 26 36.46 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

Chlorine Other 

Inorganic 

HAP 

< 0.0068 ppmvd DLL 26 70.91 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

Acrolein Volatile 

Organic 

HAP 

 0.0148 ppmvd TO-15 56.06 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Acetone ** Volatile 

Organic 

HAP 

 0.22 ppmvd TO-15 58.08 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Carbon 

disulfide 

 Volatile 

Organic 

HAP 

 0.00129 ppmvd TO-15 76.14 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Methyle

ne 

chloride 

 Volatile 

Organic 

HAP 

 0.00166 ppmvd TO-15 84.93 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

nHexane Volatile Organic 

HAP 

 0.011 ppmvd TO-15 86.18 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Chlorofo

rm 

 Volatile 

Organic 

HAP 

 0.0118 ppmvd TO-15 119.38 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Benzene Volatile 

Organic 

HAP 

 0.0071 ppmvd TO-15 78.11 28.95 2500 125 32 
13 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

OK2C0960 Hydrocr

acker * 

Methyl 

methacr

ylate 

 Volatile 

Organic 

HAP 

 0.000706 ppmvd TO-15 86.09 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Toluene Volatile 

Organic 

HAP 

 0.00946 ppmvd TO-15 92.14 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

1,1,2-

Trichloro

ethane 

 Volatile 

Organic 

HAP 

 0.000586 ppmvd TO-15 133.41 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Ethylben

zene 

 Volatile 

Organic 

HAP 

 0.00322 ppmvd TO-15 106.17 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Xylene 

(m-, p-) 

 Volatile 

Organic 

HAP 

 0.00291 ppmvd TO-15 106.17 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Xylene 

(o-) 

 Volatile 

Organic 

HAP 

 0.00105 ppmvd TO-15 106.17 28.95 2500 125 32 

OK2C0960 Hydrocr

acker * 

Acetone ** Volatile 

Organic 

HAP 

 0.28 ppmw 6410 58.08 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

Benzene Volatile 

Organic 

HAP 

 0.00028 ppmw 6410 78.11 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

Methyle

ne 

chloride 

 Volatile 

Organic 

HAP 

 0.016 ppmw 6410 84.93 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

Pentane ** Volatile 

Organic 

HAP 

 0.00146 ppmw 6410 72.15 NA NA NA NA 

OK2C0960 Hydrocr

acker * 

Toluene Volatile 

Organic 

HAP 

 0.00051 ppmw 6410 92.14 NA NA NA NA 
14 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

PA1B1050 West * VOC VOC 5.64 ppmvd Modified 

El Paso 

16.4 30.07 2500 125 23 

PA1B1050 West * Methan

e 

 Hydrocarbo

n 

 1.9 ppmvd D1945 16.4 30.07 2500 125 23 

PA1B1050 West * THC Volatile 

Organic 

HAP 

 0.65 ppmvd TO-12 16.4 30.07 2500 125 23 

PA1B1050 West * Acetone ** Volatile 

Organic 

HAP 

 0.014 ppmvd TO-15 58.08 30.07 2500 125 23 

PA1B1050 West * 2,2,4-

Trimethy

lpentane 

 Volatile 

Organic 

HAP 

 0.057 ppmvd TO-15 114.23 30.07 2500 125 23 

PA1B1050 West * Trichloro

ethylene 

 Volatile 

Organic 

HAP 

 0.00071 ppmvd TO-15 131.39 30.07 2500 125 23 

PA1B1050 West * Toluene Volatile 

Organic 

HAP 

 0.0022 ppmvd TO-15 92.14 30.07 2500 125 23 

PA1B1050 West * Xylene 

(m-, p-) 

 Volatile 

Organic 

HAP 

 0.00081 ppmvd TO-15 106.17 30.07 2500 125 23 

PA1B1050 West * Formald

ehyde 

 Aldehydes 0.0041 ppmvd TO-11A 30.03 29.1 2500 125 23 

PA1B1050 West * HCl Other 

Inorganic 

HAP 

< 0.174 ppmvd BDL 26 36.46 29.1 2500 125 23 

PA1B1050 West * Chlorine Other 

Inorganic 

HAP 

< 0.083 ppmvd BDL 26 70.91 29.1 2500 125 23 

PA1B1050 East 

(return 

line 1) 

THC Total 

strippable 

VOC 

 0.15 ppmvd Modified 

El Paso 

16.4 30.07 2500 125 29 

PA1B1050 East 

(return 

line 2) 

THC Total 

strippable 

VOC 

 0.73 ppmvd Modified 

El Paso 

16.4 30.07 2500 125 29 

TX3A1300 Gas 

Plant 

CWT 

(East F21) 

THC Total 

strippable 

VOC 

 0.4 ppmv Modified 

El Paso 

16.4 29.56 2500 129.2 34 
15 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

TX3A1300 Gas 

Plant 

CWT 

(East F21) 

HCl Other 

Inorganic 

HAP 

< 0.62 ppmv BDL 26 36.46 26.41 2500 125 32 

TX3A1300 Gas 

Plant 

CWT 

(East F21) 

Chlorine Other 

Inorganic 

HAP 

< 0.32 ppmv BDL 26 70.91 26.41 2500 125 32 

TX3A1300 Gas 

Plant 

CWT 

(West F21) 

THC Total 

strippable 

VOC 

 0.3 ppmv Modified 

El Paso 

16.4 25.9 2500 132.5 34 

TX3A1300 CWT No. 

1 (West 

F-20) 

THC Total 

strippable 

VOC 

 0.3 ppmv Modified 

El Paso 

16.4 25.94 2500 122.5 34 

TX3A1300 CWT No. 

2 (North 

F-47) 

THC Total 

strippable 

VOC 

 0.4 ppmv Modified 

El Paso 

16.4 25.987 2483.3 120.8 23 

TX3A1300 CWT No. 

2 (South 

F-47) 

THC Total 

strippable 

VOC 

 0.9 ppmv Modified 

El Paso 

16.4 25.99 2466.7 115.8 24 

TX3A1300 CWT No. 

1 (East 

F-20) 

THC Total 

strippable 

VOC 

 0.4 ppmv Modified 

El Paso 

16.4 26.4 2500 125 39 

TX3B1150 CTWFUA

LK 

THC Total 

strippable 

VOC 

< 0 ppmv BDL Modified 

El Paso 

16.4 29.97 2500 125 40 

TX3B1150 CTWFUC

PX 

THC Total 

strippable 

VOC 

< 0 ppmvd BDL Modified 

El Paso 

16.4 29.97 2500 125 41 

TX3B1150 CTWFU

MTB 

THC Total 

strippable 

VOC 

< 0 ppmvd BDL Modified 

El Paso 

16.4 29.97 2500 125 43 

TX3B1150 CTWFU

MTB 

HCl Other 

Inorganic 

HAP 

 0.00885 ppmvd 26 36.46 29.9 3480 125 39 
16 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

TX3B1150 CTWFU

MTB 

Chlorine Other 

Inorganic 

HAP 

 0.00031 ppmvd 26 70.91 29.9 3480 125 39 

UT4A1380 4 VOC Total 

strippable 

VOC 

 1.8 ppmvd Modified 

El Paso 

16.4 25.84 2500 125 26 

UT4A1380 6 VOC Total 

strippable 

VOC 

 24 ppmvd Modified 

El Paso 

16.4 25.84 2500 125 27 

UT4A1380 7 VOC Total 

strippable 

VOC 

 12.2 ppmvd Modified 

El Paso 

16.4 25.85 2500 125 32 

UT4A1380 8 VOC Total 

strippable 

VOC 

 3.4 ppmvd Modified 

El Paso 

16.4 25.85 2500 125 28 

UT4A1380 11 * VOC Total 

strippable 

VOC 

 1,941 ppmvd Modified 

El Paso 

16.4 25.75 2500 125 26 

UT4A1380 11 * Methan

e 

 Hydrocarbo

n 

 0.57 ppmvd 18 16.4 25.75 2500 125 26 

UT4A1380 11 * THC Surrogate 2380 ppmvd TO-12 16.4 25.75 2500 125 26 UT4A1380 11 * HCl Other 

Inorganic 

HAP 

 0.466 ppmvd 26 36.46 25.75 2500 125 26 

UT4A1380 11 * Chlorine Other 

Inorganic 

HAP 

< 0.537 ppmvd BDL 26 70.91 25.75 2500 125 26 

UT4A1380 11 * Acetone ** Volatile 

Organic 

HAP 

 0.11 ppmvd TO-14A 58.08 25.75 2500 125 26 

UT4A1380 11 * Carbon 

disulfide 

 Volatile 

Organic 

HAP 

 0.023 ppmvd TO-14A 76.14 25.75 2500 125 26 

UT4A1380 11 * nHexane Volatile Organic 

HAP 

 0.00079 ppmvd TO-14A 86.18 25.75 2500 125 26 

UT4A1380 11 * Methyle

ne 

chloride 

 Volatile 

Organic 

HAP 

 0.0022 ppmvd TO-14A 84.93 25.75 2500 125 26 
17 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

UT4A1380 11 * Pentane ** Volatile 

Organic 

HAP 

 0.04 ppmvd TO-14A 72.15 25.75 2500 125 26 

UT4A1380 11 * Toluene Volatile 

Organic 

HAP 

 0.0015 ppmvd TO-14A 92.14 25.75 2500 125 26 

UT4A1380 11 * 2,2,4-

Trimethy

lpentane 

 Volatile 

Organic 

HAP 

 0.12 ppmvd TO-14A 114.23 25.75 2500 125 26 

UT4A1380 11 * Formald

ehyde 

 Aldehydes 0.00693 ppmvd TO-11A 30.03 25.75 2500 125 26 

UT4A1380 11 * Acetone ** Volatile 

Organic 

HAP 

 0.038 ppmw 6200, 

8260B 

58.08 NA NA NA NA 

UT4A1380 11 * Cumene Volatile 

Organic 

HAP 

 0.000072 ppmw 6200, 

8260B 

120.19 NA NA NA NA 

UT4A1380 11 * Ethylben

zene 

 Volatile 

Organic 

HAP 

 0.000045 ppmw 6200, 

8260B 

106.17 NA NA NA NA 

UT4A1380 11 * Methyle

ne 

chloride 

 Volatile 

Organic 

HAP 

 0.00011 ppmw 6200, 

8260B 

84.93 NA NA NA NA 

UT4A1380 11 * Pentane ** Volatile 

Organic 

HAP 

 0.0025 ppmw 6200, 

8260B 

72.15 NA NA NA NA 

UT4A1380 11 * Toluene Volatile 

Organic 

HAP 

 0.00013 ppmw 6200, 

8260B 

92.14 NA NA NA NA 
18 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

UT4A1380 11 * 2,2,4-

Trimethy

lpentane 

 Volatile 

Organic 

HAP 

 0.0069 ppmw 6200, 

8260B 

114.23 NA NA NA NA 

UT4A1380 11 * Xylenes 

(mixed) 

 Volatile 

Organic 

HAP 

 0.0006 ppmw 6200, 

8260B 

106.17 NA NA NA NA 

WA5A1400 CT-1 

(West 

Riser) 

VOC VOC 0.11 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 18 

WA5A1400 CT-1 

(East 

Riser) 

VOC VOC 0.26 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 18 

WA5A1400 CT-2 VOC VOC 0.43 ppmvd Modified 

El Paso 

16.4 29.9 2500 125 18 

WA5A1400 CT-2 HCl Other 

Inorganic 

HAP 

< 0.036 ppmvd BDL 26 36.46 29.9 2500 125 18 

WA5A1400 CT-2 Chlorine Other 

Inorganic 

HAP 

 0.35 ppmvd 26 70.91 29.9 2500 125 18 

WI2B1460 CT1 * THC (as 

heptane) 

 Surrogate 0.17 ppmvd TO-12 16.4 29.9 2500 125 32 

WI2B1460 CT1 * Formald

ehyde 

 Aldehydes < 0.01 ppmvd DLL TO-11A 30.03 29.9 2500 125 32 

WI2B1460 CT1 * Methan

e 

 Hydrocarbo

n 

< 10 ppmvd BDL 18 16.4 29.9 2500 125 32 

WI2B1460 CT1 * HCl Other 

Inorganic 

HAP 

< 0.022 ppmvd BDL 26 36.46 29.9 2500 125 32 

WI2B1460 CT1 * Chlorine Other 

Inorganic 

HAP 

 0.043 ppmvd 26 70.91 29.9 2500 125 32 

WI2B1460 CT1 * Toluene Volatile 

Organic 

HAP 

 0.0021 ppmvd TO-15 92.14 29.9 2500 125 32 
19 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

WI2B1460 CT1 * Acetone ** Volatile 

Organic 

HAP 

 0.22 ppmw 8260B 58.08 NA NA NA NA 

WI2B1460 CT2 * THC (as 

heptane) 

 Surrogate 0.24 ppmvd TO-12 16.4 29.9 2500 125 32 

WI2B1460 CT2 * Formald

ehyde 

 Aldehydes < 0.01 ppmvd BDL TO-11A 30.03 29.9 2500 125 32 

WI2B1460 CT2 * Methan

e 

 Hydrocarbo

n 

< 10 ppmvd BDL 18 16.4 29.9 2500 125 32 

WI2B1460 CT2 * HCl Other 

Inorganic 

HAP 

< 0.025 ppmvd BDL 26 36.46 29.9 2500 125 32 

WI2B1460 CT2 * Chlorine Other 

Inorganic 

HAP 

< 0.013 ppmvd BDL 26 70.91 29.9 2500 125 32 

WI2B1460 CT2 * Acetone ** Volatile 

Organic 

HAP 

 0.006 ppmvd TO-15 58.08 29.9 2500 125 32 

WI2B1460 CT2 * Acrolein Volatile 

Organic 

HAP 

 0.0012 ppmvd TO-15 56.06 29.9 2500 125 32 

WI2B1460 CT2 * Benzene Volatile 

Organic 

HAP 

 0.0008 ppmvd TO-15 78.11 29.9 2500 125 32 

WI2B1460 CT2 * Carbon 

disulfide 

 Volatile 

Organic 

HAP 

 0.0014 ppmvd TO-15 76.14 29.9 2500 125 32 

WI2B1460 CT2 * Ethylben

zene 

 Volatile 

Organic 

HAP 

 0.00057 ppmvd TO-15 106.17 29.9 2500 125 32 

WI2B1460 CT2 * Toluene Volatile 

Organic 

HAP 

 0.0096 ppmvd TO-15 92.14 29.9 2500 125 32 
20 

Facility ID 

Cooling 

Tower 

ID 

Pollutan

t name 

Pollutant 

class 

Measured 

Concentra

tion 

units, 

ppmvd or 

ppmw 

Design

ation 

Test 

Method MW 

P (ElPaso 

apparatus), 

in.Hg 

b (strip 

air 

flow), 

mL/min 

a (sample 

water 

flow), 

mL/min T, C 

WI2B1460 CT2 * 2-

Nitropro

pane 

 Volatile 

Organic 

HAP 

 0.00075 ppmvd TO-15 89.09 29.9 2500 125 32 

WI2B1460 CT2 * Xylenes 

(mixed) 

 Volatile 

Organic 

HAP 

 0.0032 ppmvd TO-15 106.17 29.9 2500 125 32 

WI2B1460 CT2 * Pentane ** Volatile 

Organic 

HAP 

 0.0014 ppmvd TO-15 72.15 29.9 2500 125 32 

WY4A1470 CT No.2 HCl Other 

Inorganic 

HAP 

 0.149 ppmvd 26 36.46 24.24 2700 125 29 

WY4A1470 CT No.2 Chlorine Other 

Inorganic 

HAP 

 0.020 ppmvd 26 70.91 24.24 2700 125 29 

* Facility required to conduct detailed testing for these cooling towers. ** Not a HAP. 1 Facility did not provide a copy of the test report. 2 Red text indicates that the default values for flows specified in the method, atmospheric P, and average ambient temperature were used. For cooling water tests conducted in thtemperature was at least 90F (32C). 3 The facility calculated the concentration in the water based on the air concentration, and provided the value. 4 Compare to measured water concentration, below. 5 Compound was BDL in the measured air. 6 The facility calculated the mass emission rate and provided the value. 7 The facility provided calculated values for the water concentration and the mass emission rate, but there appeared to be a problem with the calculation (facility used 2.5 mL/min 8 Measured air concentration is not provided as methane; in determining the water concentration and the mass emission rate, the air concentration was converted to methane. 9 The emissions from the cooling tower are estimated based on the measured water concentration and the cooling tower water flowrate (see cooling tower flowrate values in Table present in the water volatilizes. 10 The test report for this cooling tower presents water concentrations in ug/L and shows these values as being equivalent to ppmw, however, there appeared to be a problem; we  in ug/L and ppbw.