_i 

February 13. 2003 

Bradley Belflower 

. Georgia Environmental Protection Division 

4244 International Parkway 

Suite 120 

Atlanta, GA 30354 

(404) 362-4845 

Re: Thomaston Compressor Station 

Permit No. 4992-293-0025-V-01-1 

Oxidation Catalyst Proposal Addendum 

Dear Mr. Belflower: 

A· ep!Southern - Natural Gas en EI Pas,O company 

Southern Natural Gas (SNG) Company, adMsion ofEI Paso Corporation, would like to submit the 

attached Oxidation Catalyst Proposal 'Addendum. The original Oxidation Catalyst Proposal was 

submitted to GAEPD on September 19. 2002 and subsequenlJnformation was emailed to you on 

November 3, 2002. The purpose of this addendum is to submit the -jiOst test calibration data, requested 

on February 7,2003, for the subsequent emissions mapping1 performed on July 25. 2002, one day 

following the original emissions compliance test. 

The initial TiUe V emissions compliance test adhered to US EPA test methods 7E, 10. and 320 for the 

determination -of NOx, CO, and H2CO respectively. The emissions mapping data taken the following 

day conceming CO, O2, and H2CO did not meet all of the guidelines set forth in the test methods 

mentioned above; however, at the close-of emissions mapping the following day. post test calibration 

checks were performed on the CO, ~,and H~O analyzers used in the acquisition of test data. 

In the case of the CO and O2 analyzers, zero and span drift checks were performed once testing was 

completed. For H~O, calibration transfer standard checks were performed once testing was 

completed. Taking into account the fact that these analyzers had not been calibrated since the 

previous day, the post test calibration drift checkS and calibration transfer standard checks demonstrate 

that each of the analyzers used held its calibration extremely well. Post test drift checks for zero and 

span calibration gases were within 2% error as allowed by EPA. Post test calibration transfer standard 

checks were within 5% error as allowed by EPA. Please find attached these drift check forms and 

calibration transfer standard check forms along with sheets summarizing the results. 

For each of the three emissions mapping data points acquired, pollutant concentrations were measured 

for fifteen minutes (via reference method analyzers for CO and ~and via FTfR for H~O) and unit 

operating data was monitored and recorded3

• . 

SNG urges GAEPD to take the above mentioned factors into account when determining the oxidation 

catalyst inlet temperature range requirements for Permit Unit COO3 located at SNG's Thomaston 

Compressor Station. 

I Emissions mapping data refers to data gathered at various operating conditions of the unit. For Unit C003 

at SNG's Thomaston Compressor Station, these various operating conditions include a high horsepowerlow speed, low horsepower-high speed, and low horsepower-low speed settings. These test points, 

combined with the emissions data taken at high horsepower-high speed during the initial compliimce test, 

frovide an emissions "map" of the unit covering a broad range of unit operation. 

During mapping of Permit Unit C003 on July 25, 2002, pretest calibration checks along with pre and 

r;sttest bias checks were not perfonned. 

See Oxidatipn Catalyst Proposal, submitted to GAEPD on September 19, 2002. 

Southern NatulBl Gas 

1900 Fifth Avenue North Binningham. Alabama 35203 

PO Box 2563 Birmingham. Alabama 35202.2563 

teI205.325.7410 fax 205.325.7490 
If you have any questions regarding this matter, please feel free to contact Jonathan Goss concerning 

data collection issues at (832) 676-4436 or Manish Singh concerning permit issues at (832) 676-7486. 

Sincerely, 

M.S.Catt 

DMsion Director, Southeast 

KDB:llj 

/<.00 

Enclosures 

UPS Tracking No.: 1z 33456901 96534014 

S:/ADMl19IKDB 2003ITHOMASTON 2002 CATALYST REPORT ADDENDUM COVERDOC 
STATION: 

UNIT: 

GAS 

ZERO 

SPAN 

Thomaston 

3 

CYLINDER 

No. 

ALM031393 

SX-40853 

02 ANALYZER 

ZERO AND CALIBRATION DATA 

DATE: 7/25/2002 

RUN: Mapping 

INITIAL FINAL CYLINDER ANALYZER ANALYZER VALUE(%) RESPONSE RESPONSE 

SCANt 7:12:1 I SCAN I 13 43:26 

0 0.0860 0.0490 

SCAN I 7:22:01 SCAN 1 15 . .,:58 

21.1 21.01 20.~34._ . 

ANALYZER: 

SERIAL NO.: 

SPAN VALUE: 

ABSOLUTE 

;ERVOMEX 140 

01415/B231 

25 

PERCENT 

DIFFERENCE DRIFT 

0.037 0.15% 

0.071 0.28% 

-~--- --L.....-.-. -_.- ----. -.---

~ 

f7 
STATION: 

UNIT: 

GAS 

, ZERO 

SPAN 

Thomaston 

3 

CYLINDER 

No. 

AAL13802 

ALM002418 

CO ANALYZER 

ZERO AND CALIBRATION DATA 

DATE: 7125/2002 

RUN: Mapping 

CYLINDER INITIAL FINAL 

VALUE ANALYZER ANALYZER 

(ppm) RESPONSE RESPONSE SCAN I 7:12', SCAN 13'43,26 

0 0.0360 -0.1120 SCAN I 7:22:01 SCAN I 15'11:58 '55.48 55.623 55.353 -

ANALYZER: 

SERIAL NO.: 

SPAN VALUE: 

ABSOLUTE 

DIFFERENCE 

0.148 

0.27 

THERMO 48C 

48C-68128-359 

100 

PERCENT 

DRIFT 

0.15% 

0.27% --

. "iiI 

. 

J'I 

. ~. 
Station: THOMASTON, GA 

EMISSIONS TEST 

Unit: CAT G36lS 

Low speed/Med (80%) Torque Drift Zeros 

-P6~'" T <~ T . 

~eio Dc.IP r Cit ~Ul. 

7/25/02 01:43:26 PM 

Instrument Value Units I Instrument Value Units CI ------------- ----------------------------1----------------------------~-------------- CO . -0.112 ppJ t 01 CO2 0.059 % 

02 0.049 , . I 03 NO 0.351 ppm 

04 NOX- 2. 939 ppm I 05 THC -1.118 ppm 

*** AtmospheriC Data .*** 

Instrument Value Units I Instrument Value Units 

-·~---------------------·-------------------I-------------------------------------------

51 Relative Humidity 58.S09 , RH I 52 Amb. Temp. 85.481 F 

scanninq Period is 0.12 minute!!). 

Values calibrated using file ftC:\Tenneco\CALS\Thomaston Cat 3616 Unit 3 ~1-02) .calft• 
'e"~, r 

1> il ,pr C i+e-'I( 

Station: THOMASTON, GA 

EMISSIONS TEST 

Unit: CAT G3616 7/25/02 01:46:11 PM 

Low Speed/Ked (80t) Torque Drift Highs 

Instrument Value Units I Instrument Value Units 

------------------------------------------1-----------------------.------------------- <![ CO 55.353 PP:I) I 01 C02 6.252 % 

0220.934 i 1 03 NO . 161. 536 ppm 

04 NOx 175.076 ppm 1 05 THC2470.391 ppm 

+++ Atmospheric Data **+ 

Instrument ! Value Units I Instrument Value Units 

------------------------------------------1----------------~-------------------------- 51 Relative Humidity 57.495 t RB I 52 Amb. Temp. 85.629 F 

Scanning Period is 0.12 minute {sl • 

Values calibrated using file "C:\Tenneco\CALS\Thomaston Cat 3616 Unit 3 (7-02) .cal". 
A 

ep Southern 

Natural Gas 

an EI Paso company 

September 19. 2002 

Mike Fogle 

Georgia Environmental Protection Division 

4244 International Parkway . 

Suite 120 

Atlanta, GA 30354 

(404) 363-7053 

EI Paso Cotporation 

Mechanical Testing Group 

9 Greenway Plaza 

Houston, TX 17046 

Phone: (832) 676-4418 

Fax: (832)676-1758 

RECEIVED 

JAN 3 1 2003 

AIR PROTECTION BRANCH 

Subject: SNG, Pennit No. 4992-293-002S¥.Q1-1, OxIdation catalyst Proposal 

Dear Mr. Fogle: 

Southern Natural Gas Company, a division of 8 Paso Corporation, would like to submit the attached 

oxidation catalyst proposal for permit No. 4992-293-0025-V..o1-1 (one Caterpillar G3616 Internal 

Combustion engine) for GAEPD approval. This proposal outlines issues sUlTOUnding the establishment 

of a catalyst inlet temperature range. proper oxidation catalyst operation, and the proposal of a low-end 

catalyst inlet temperature limit. 

If you have any questions regarding this matter, please feel free to call me at (832) 67~~ 

-~ ~ 

onathan Goss 

Mechanical Testing Group 

Plant Services Department 

EI Paso Corporation 

Enclosure (1) 

~ ~ ?~~ ~~~ ()e :I~ ~J(;~~ J) <"'QIG {f ~,.o~rJq~ . 

. VQ~ 
A 

ep Southern 

Natural Gas 

an EI Paso company 

bee: Manish Singh for corporate environmental files 

. GW9 Room 1632 

(832) 676-7486 

j"'1<elly Beavers for field environmental files 

1900 Fifth Ave. North 

Birmingham, AL 35203 

(205) 325-3784 

Mark Belizi for station environmental files 

5276 Hvvy 19 SOuth 

Thomaston. GA 30274 

(706) 647~9821 

Mechanical Testing File #: 02-039 

ecc: Tom Burgett 

Tom Tarver 

George Acker 

EI Paso Corporation 

Mechanical Testing Group 

9 Greenway Plaza 

Houston, TX 77046 

Phone: (832) 676-4418 

Fax: (832) 676-1758 
to. 

At. 

ep Southern 

Natural Gas 

an EI Paso company 

EI Paso COtpOration 

Mechanical Testing Group 

9 Greenway Plaza 

Houston, TX 17046 

Phone: (832) 676-4418 

Fax: (832) 676-1758 

Oxidation Catalyst Temperature Monitoring and 

LOAer Unlit Prqx:>sal for One (1) Caterpillar G3616 

Redprocating Engine 

Permit Amendment 4922-293-0025-V-01-1 

Southam Natural Gas 

Thomaston Compressor Slation 

Thomaston, Georgia 30286 (Upson County) 

Date: 

Prepared for: 

Prepared by: 

September 19, 2002 

State or Georgia Department or 

Natural Resources 

Jonathan Goss 

. Mechanical Testing Group 

Plant ServIces Department 

(832) 67&4436 
Table of Contents 

Il'iTRODUCTION ......... _ ......................................... _ .. _. __ ..................................................... ...; •.•.• __ ............ _ ... 1 

DATA COLLECTION_ ........................................... _ .............. __ .... _ ........................................... _ .................. 2 

REsULTS SUMMARY .......................................................................................................................... , ......................... 2 

TEMPERATURE RANGE EST ABLISHMENT ........ _ ... _ .... _ ........... _ ....................................... _ ......... 3 

TEST POINTS ................................................................................................................................................................. 3 

STACK INSULATION ..................................................................................................................................................... 4 

OXIDATION CATALYST FUNCTIONALITY ..................................................................................................... 5 

OXYGEN CONTENT ...................................................................................................................................................... 5 

CATALYST INLET TEMPERATURE ................................................................................................................................ 5 

PROPOSAL ............................................................................................................... ; ................................................... 6 

APPENDIX A ............................................ _ ............................ _ ............................................................................ _ 7 

REfERENCE METHOD EMISSIONS TEST DATA ................................................................................. ; .......................... 7 

APPENDIX B ....... __ .... _ .... ____ ._ ............... _._ ...... -. .. _ .. _ .. __ ......... __ ..... _ ..................... _ ............ 9 

STEADY STATE CATALYST INLET TEMPERATURE ........................................................................... ~ .......................... 9 

APPENDIX C ................ _ .......................... _ ............................ __ .• _ ............... _ .......................... _ ............ 12 

CAT AL YST SPECifiCATIONS ...................................................................................................................................... 12 

APPENDIX D _. ___ .. ___ .......... __ .. _. __ .. __ ... __ ....... __ . __ ._-" ___ .. __ .... __ ..... _ .......... _ ..... 15 

EXHAUST DIAGRAM FOR EMISSIONS UNIT Coo3. CA TERPILLARG3616 ................................................................ IS 

APPENDIX E ........... _. __ • __ ... __ ......... _ ........ _ •• _ .. __ ._ •• _ ....... ___ •... _.~ •. _ .. _. __ ............................ __ 16 

UNIT OPERATING DATA ............................................................................................................................................ 16 

I 
Introduction 

This report is an examination of the catalyst inlet temperature data of the Caterpillar 

G3616 (Unit C003) located at the Southern Natural Gas (SNG). Thomaston compressor 

station. As per Georgia Environmental Protection Division (GAEPD) Permit Amendment 

4922~293-OO25-V-01-1. SNG performed Title V reference method emissions compliance 

testing on the afore mentioned unit on July 24.20021

• Three data sources were utilized 

for the compilation of this report and provide a means for analyzing catalyst operational 

and performance characteristics. These sources are outline below: 

1. Data from the Reference Method emissions compliance test of Unit C003 on July 

24.2002. 

2. Data from the subsequent emissions mapping of UnitCOO3 on July 25, 2002. 

3. Data from the units operational software corresponding to Unit C003. 

SNG feels that these data along with the analysis and supplier specifications. outlined in 

the following sections of this report. demonstrate that a catalyst inlet temperature range of 

+1- SOO F, as specified in the permit. will not allow sufficient operating range and is not 

needed to provide assurance of compliance. 

SNG does feel, however, that catalyst inlet temperature is an important and significant 

parameter in determining catalyst. health and proper functionality. The following sections 

also outline the catalyst supplier's (Clean Air Partners - Houston Industrial Silencing: 

CAP-HIS) performance Specifications and reeommended operating guidelines along with 

SNG's propoSal for catalyst inlet temperature limit establishment. 

I The Tille V compIIanc:e report was Slbnitted to GAEPD M August 20. 2002. 

1 
-. ' • 

Data Collection 

As specified in the introduction, a maximum load test, consisting of three test runs, was 

conducted on the Caterpillar G3616 reciprocating engine at the Thomaston Compressor 

Station on July 24, 2002. Summaries of results from the compliance test along with the 

subsequent mapping data are depicted below in Table 1. The fieldS highlighted in yellow 

correspond to the mapping data that was acquired on July 25. 2002. These data were 

taken with the same degree of accuracy as the reference method data. Detailed 

summaries of the unit's results are included in the APPENDIX A. 

Results Summary 

Table 1. Average emissions summary, Unit c003. Caterpillar 00616. 

Parameter Run 1 Run2 Run3 Run4 Run 5 RunG 

Date Tested 7/24f2002 712412002 712412002 7I25l2002 112512002 1I25l2002 

Percent Load 96.69 97.07 97.12 60.31 35.14' 63.52 

Catalyst Tin fF) 786.00 779.67 750.00 780.50 704.50 727.00 

CO Coc:rn) 4.84 4.63 5.31 2.72 5.72 3.20 

COOP/hrl 0.22 0.21 0.24 0.13 0.26 0.15 

CO (IbIhr) Allowable 22.00 22.00 22.00 22.00 22.00 22.00 

H@(ppmw) 2.40 2.40 2.45 . 1.05 1.72 0.76 

H£OCDOmd) 2.70 2.70 2.75 1.20 1.97 0.87 

H£OClbIhr) 0.15 0.15 0.16 . 0.06 0.10 0.04 

H£O (lblhr) Allowable 2.20 2.20 2.20 2.20 2.20 2.20 

Oxygen(%) 10.91 10.89 10.81 10.47 9.93 10.61 

The operating data corresponding to the Caterpillar G3616 was acquired from the units 

control system. These data correspond to a date range from July 17, 2002 through 

September 18, 2002 (see APPENDIX E). The data shows extended periods in which the 

unit was offline. Only the data from steady state operations was used in this evaluation2

• 

These data were analyzed and plotted as a time function. These charts will be explained 

in detail in the TEMPERATURE RANGE section of this report. 

2 GAEPD permit amendment 4922-293-0025-V-01-1 specifies reporting cA excursions only when the catalyst 

temperature has been out cAthe established r.ange for a period cAlhree hcU's. Therefore, b this data analysis. 

only st~ state operating data was analyzed. Steady state operating data is hereby specified as data taken 

While the unit has been in operation for a time period 01 no less !han one hct.r. 

2 
Temperature Range Establishment 

GAEPD Permit Amendment 4922·293-0025-V..()1·1 specifically outlines procedures for 

establishing a +/. 50° F temperature range for the oxidation catalyst. Below is an excerpt 

from Section 4.2.2 of the afore mentioned permit amendment: 

During !he tests required by Condition. No. 4.2.1, !he Perm~ee shaH monitor and record !he il\et 

temperature of !he Oxidation Catatyst ~D. No. COO3C) using !he devise required by Condition 5.2.2. 

The Permitee shaI~ using !he temperature data andlhe resulls of !he performance tests, determine lhe 

average inlet temperature at which· COI'TlprlSl'lCe with the applk::ab\e emissions Iimit:atioos for carbaI 

mooome (CO) and bmaldehyde (HCHO) stipulated in Condition Nos. 3.2.1 and 3.2.3 is achieved. 

For !he purpose of reporting excursions required by Condition 6.1.7 c I, the inlet temperature range shall 

be tie average illat temperature pIuslminus f:IIJ Fahrenheit. Within sixty (SO) days after lhe tests 1t\e 

Permitee shaD submit a report !hat contains all of tie illet temperature data recorded for tie day of 

testing with identification of tie periods for each test run and tie temperature range established fa'tIe 

Oxidation Catalyst. . 

SNG feels that a catalyst inlet temperature range of +/. flJo F is not appropriate according 

to the data sources outlined in the INTRODUCTION section of this report. This section will 

address issues involved with establishing a temperature range of +/. 50° F. 

TestPoin1s 

. The data from the reference method emissions compliance test along with data from the 

subsequent engine emissions . mapping. encompasses a wide. operational range.· 

APPENDIX A contains all emissions compliance and mapping data. The compliance test 

data represents operating and emissions data at ful,. speed and load while the mapping 

data is more comprehensive. The mapping data represents subsequent data at three 

additional points. These points are: 

• High speed, low torque 

• Low speed, low torque 

(2741 HP @ 998 RPM) 

(1597 HP @ 803 RPM) 

• Low speed, medium torque (2887 HP @ 799 RPM) 

SNG feels that these additional test points provide sufficient data for claSSifying the entire 

operating range of Unit c003. These data points, along with other steady state operating 

data acquired prior to exhaust piping insulation (see STACK INSULATION), display a 

catalyst inlet temperature operating range of between 688.73° Fand 793.00° F. This 

temperature array would be out of any established ran~ set by SNG. It is important to 

note; however, that although there was over a +/. 50 F temperature variability in the 

examined data, the CO .and HCHO levels determined by means of emissions compliance 

testing and mapping were at levels significantly below permit values (see Table 1). 

3 
-; 

... 

FI'IR Post Test Calibration Transfer Standard (CTS) Check 

File Name Date / Time 

Jul25 12:43:46 200: 

Ethylene 

(ppm) 

101.52 

[~--:1Cl1~56-~ 

101.53 ..... ::'\1 

Error 

(Percent) 

1.50% 

1.52% 

1.56% 

1.53%· 

5.00% 
Method title: 

Method file name: 

Meth DevMlssissippi 

C:\Omnic\Gasanal\thomaston2.qnt 

Spectrum title: Thu Jul25 12:42:04 2002 • CTS Post System 1 

Spectrum file name: 

Spectrum date: 

Index 

Thu JuI2512:43:46 2002 

Component 

1 Carbon Monoxide 

2 Carbon dioxide 

3 Nitric oxide 

4 Nitrogren dioxide 

5 Nitrous oxide 

6 Methane 

7 Acetylene 

8 Ethylene· 

9 Ethane 

10 Propylene 

11 Formaldehyde 

12 Water 

·13 Propane 

14 Ammonia 

15 Sulfur hexafluoride 

16 Acetaldehyde 

17 Acrolein 

18 NOx 

19 Total Hydrocarbons 

20 Non Methane Hydrocarb 

Concentration Std. error 

0.0105 

·8.021 

1.5208 

0.0023 

-0.0246 

2.3752 

-0.241 

101.4972 

·1.299 

-1.0643 

-0.0248 

59.0947 

1.0039 

-0.1987 

-0.0031 

-0.0175 

-1.3733 

j.5231 

192.2697 

189.657 

0.02516 

23.70582 

0.46735 

0.02315 

0.04099 

2.85409 

0.36894 

0.3405 

1.07601 

1.10682 

0.06327 

72.46194 

0.54508 

0.36337 

0.00961 

0.06374 

1.82534 

0.49049 

8.53411 

5.39462 

F r I ill 1>01'" r,H' 

(r~ <:. JI~c.k ;I: j 
Method title: 

Method file name: 

Meth Oev Mississippi 

C;\Omnic\Gasanal\thomaston2.qnt 

Spectrum title: Thu Jul 25 12:45:32 2002 - CTS Post System 3 

Spectrum file name: 

Spectrum date: 

Index 

Thu Jul 25 12:47:08 2002 

Component 

1 Carbon Monoxide 

2 Carbon dioxide 

3 Nitric oxide 

4 Nitrogren dioxide 

5 Nitrous oxide 

6 Methane 

7 Acetylene 

8 Ethylene 

9 Ethane 

10 Propylene 

11 Formaldehyde 

12 Water 

13 Propane 

14 Ammonia 

15 Sulfur hexafluoride 

16 Acetaldehyde 

17 Acrolein 

18 Ndx 

19 Total Hydrocarbons 

20 Non Methane Hydrocarb 

Concentration Std. error 

0.0094 

-6.3666 

1.5939 

0.0034 

0.018 

1.9672 

-0.04 

101.5645 

-1.4171 

-0.9846 

-0.1447 

15.4442 

1.0382 

-0.1944 

..0.0021 

-0.0302 

-1.2627 

1.5973 

192.434 

190.27 

0.02616 

20.00492 

0.47652 

0.0234 

0.06007 

2.84907 

0.32424 

0.33941 

1.07412 

1.13227 

0.059 

62.83828 

0.54413 

0.36221 

0.00958 

0.05943 

1.81953 

0.49993 

8.38561 

5.25163 

F 7" Itt P~.T Tc!~ 

en Cf-fe(.1< ~3 
'" 

Method title: 

Method file name: 

Meth Dev Mississippi 

C:\Omnic\Gasanal\ttiomaston2.qnt 

Spectrum title: Thu Jul25 12:43:512002· CTS Post System 2 

Spectrum file name: 

Spectrum date: 

Index 

Thu Jul 25 12:45:28 2002 

Component 

1 Carbon Monoxide 

2 Carbon dioxide 

3 Nitric oxide 

4 Nitrogren dioxide 

5 Nitrous oxide 

6 Methane 

7 Acetylene 

8 Ethylene 

9 Ethane 

10 Propylene 

11 Formaldehyde 

12 Water 

13 Propane 

14 Ammonia 

15 Sulfur hexafluoride 

16 Acetaldehyde 

17 Acrolein 

18 NOx 

19 Total Hydrocarbons 

20 Non Methane Hydrocarb 

Concentration Std. error 

0.0017 

~.4325 

1.563 

-0.0001 

0.0178 

2.0219 

0.0549 

101.517 

-1.3193 

·1.0611 

·0.0346 

43.1555 

1.0097 

-0.2355 

-0.0025 

-0.0047 

-1.3287 

1.5629 

192.7881 

190.564 

0.02478 

21.70929 

0.48198 

0.02252 

0.06178 

2.83276 

0.33852 

0.33806 

1.06797 

1.12149 

0.06254 

70.08884 

0.54101 

0.36078 

0.00954 

0.06301 

1.81231 

'0.5045 

8.38731 

5.27127 

Petit 'PeST T£l' 

( T) c.1I £., /( -It,. 
Stack Insulation 

Prior to the submittal of this report yet following the compliance emissions testing and 

mapping, insulation was placed on the portion of the exhaust piping leading up to the 

exhaust Silencer (see APPENDIX 0). This insulation was added solely for the purpose of 

personal protection. This insulation also increased the measured temperature for a given 

operating condition. and should lead to lower sensitivity to swings in ambient temperature. 

This increase can be seen in the plots generated from operating data acquired prior to and . 

data acquired following the installation of the insulation (see APPENDIX B). The average 

temperature prior to insulation installation was n9. -,0 F while the average after insulation 

installation is 806.4° F for and average catalyst temperature increase of 26.-,0 F. 

SNG, along with the catalyst supplier. believe that this increase in catalyst inlet 

temperature will only aide in the reduction of CO and HCHO. The following seCtion 

explains in detail the functionality of the oxidation catalyst. 

4 
Oxidation Catalyst Functionality 

An oxidation catalyst facilitates the breakdown of excess O2 molecules in the exhaust 

stream. The resulting oxygen atoms are subsequently available to bond with theCa 

molecules in the exhaust stream to form C~, thereby reducing the CO levels in the 

exhaust. The two most important varialJles to consider when examining catalyst 

performance are catalyst inlet temperature and O2 concentration. 

Oxygen Content 

The primary concern for the proper operation of the oxygen catalyst is the excess oxygen 

levels present in the exhaust stream. CAP-HIS has indicated that the oxidation catalyst 

supplied to SNG for use on Unit C003 at the Thomaston compressor station will operate at 

oxygen levels as low as 4% to 5% ~. 

Oxygen levels of Unit COO3 and similar units produced by Caterpillar exhibit oxygen levels. 

on average. of 12.3% O2, During emissions compliance testing oxygen levels ranged 

from 10.81% to 10.91% O2 for an average of 10.81% O2, The average oxygen levels for 

all compliance and mapping data is 10.60% O2, 

Unit COO3 at the Thomaston compressor station utilizes an air I fuel ratio controller which 

regulates the amount of air available for combustion. Due to the design characteristics of 

this engine. significant excess air is required for proper operation. This excess air is 

demonstrated by the test data presented above. Furthermore. the unit will always operate 

well in excess of the 4% O2 required by the catalyst for oxidation process. 

catalyst Inlet Temperature 

Catalyst inlet temperature is a key contributor to the proper operation and reduction 

efficiency of anoxldation catalyst For the oxidation catalyst that SNG has employed for 

the CaterplllarG3S16 at its Thomaston Compressor Station. CO conversion begins at a 

catalyst inlet temperature of just above 200° F. 95% levels of reduction are achieved at 

300° F. SimHar results are achieved for the reduction of HCHo. CAP-HIS has stated 

thae: 

.. The oxidation of formaldehyde il this application tracks !he curve for CO ck:>sely. Starting at 

approximately 400 degrees F, lhe curve will parallellhe CO curve. 

Being that the HCHO curve parallels the CO curve and begins reduction of HCHO at 400° 

F, it stands to reason that a 95% reduction will be achieved at a catalyst inlet temperature 

6f600° F. 

The supplier also states that the maximum catalyst inlet operating temperature for proper 

operation is 1150° F. For the Caterpillar G3S16. this temperature is one that will never be 

attained 'under normal operating conditions and an alarm and/or shutdown would occur at 

. a temperature much lower than 1150° F. . . 

5 
I • 

Proposal 

The preceding sections have outlined the manner in which all data used in this evaluation 

was collected and processed, why GAEPO permit amendment temperature range 

requirement is out of the scope of the normal operating range of Unit COO3, and the basic 

functionality of the oxidation catalyst installed on UnitCOO3. This section outlines SNG's 

proposal for a catalyst Inlet temperature lower limit establishment rather than a +/- SOO F 

operating window. 

SNG would like to propose the establishment of a low-end catalyst inlet temperature limit 

of 6500 F which, based on the factors below, is reasonable. and prudent for suffICient 

reduction of CO and HCHO. 

1. A catalyst inlet temperature range of +/- SOO F is not appropriate according to the 

data presented. 

2. Required excess 02 levels will always be present in the exhaust stream. 

3. catalyst light off curves supplied· by catalyst . supplier show a minimum 

temperature of 600° F for 95% reduction of CO and HCHO. 

SNG feels that the factors listed above strongly support the establishment of a low-end 

catalyst inlet temperature limit of 65(f F. This low-end limit will provide the operational 

flexibility needed while still maintaining a reasonable margin of compliance .. 

6 
· '," . . ' , 

Appendix A 

Reference Method Emissions Test ·Data 

7 
A Southern ep Natural Gas 

an EI Paso company 

- lAseD 011 FUEt.1PECI'IC OIlY '-FACTOR CALCUl.ATIOII 

"eASED 0II1i111T1tODS , ... 

'I!IM!D 011 CMSOIIIIALMCIi ISTOICH. + Ci21 

• AIf • TOT .... MASS RATIO 

COMPANY: SNO BORE: 

STATION: Thom .. ton STROKE: 

UNIT : 3 RATED RPM: 

ENGINE TYPE: c.wrpm_ 03116 RATEDBHP: 

DATE: Jul-02 RATEDBMEP: 

to 

11.8 In. FUEL ORifICE DIAM. 1.125 In. 

11.8 In. FUEL TUBE DIAM. : 1.93. In. 

1000 RPM AGAUDHV: 1026 btuldecf 

4545 8NP AGALDHV: 926 btu/dlSCf 

174 psi 
AppendixB 

Steady State Catalyst Inlet Temperature 

9 
Catalyst Inlet Temperature VS Time 

Pre-Insulation 

800~----------------~---------------------------------------------------------, 

180· 

~160 -

-

e 

t 

~. E 140 

-; 

:s 

-

~ 

S 120 co 

u 

100· 

.. 

&t 1. . I 0 If·...... ~ Average = 719.1 F & ~ & ... _---

. 4 !-~- #fA i • .. & ... 

~ 6 

• • 

I 

• ----.-.J Compliance 

• Mapping 

& ~teady State 

• 680·~1-----------T----------~--~--------~----------.-~---------r----------~ 

7/13/2002 0;00 7/18/20020:00 7/23/2002 0:00 1128/2002 0;00 

Time (hours) 

81212002 0;00 8n120020:00 8112/2002 0:00 

• 

.. 
• 

Catalyst Inlet Temperature VS Time 

Post-Insulation 

MO~----------------------~----------------------------------------------------~ 

830 

fL 

e. 820 

e 

~ ~ 

E 

~ 

i 

.5 

810 

-; 

J!' S 800 

t'D 

U 

790 

• 

; ( 

• 

• • 

•• • 

• 

• 

• 

• . ____ c.~ 

• 

--- • T • 

• • 

• 

• 

• • • 

• 

•• .' •• 

Average =806.4 of 

• 780+'------~--------r-------~------_r------~------~r_------~------_.------~ 

817/20020:00 8112/2002 8117/2002 8/22/2002 8/2712002 9/1/20020:009/6/20020:00 9/11/2002 9/16/2002 9/2112002 

0:00 0:00 0:00 0:00 0:00 0:00 0:00 

, Time (hours) 

.. 

.. .. 
-'"' .. 

AppendixC 

Catalyst Specifications 

12 
-f, 

~ "1J 

!a 

OXIDATION OATALYST 

00 AND HYO'AOCARBQN LIGHTOFF 

100 I '""? : =t : ;; • : :: :: I 

o 

·0 

n 

v 

e 

r' 50 a ' 

I 

o 

n 

20 

% 10 

co ,Butane 

~ . ........,.~-.---- - ~~-.--

. • 

.. Ul 

qJ 

I 

... 

'f 

I\) 

~ 

... 

... 

.. 

... 

\D 

~ 

~ 

J: 

.... 

Ul 

..... 

~ 

Ul 

Ul 

2 

Ul 

;u 

m 

t:I 

c 

n 

-f 

2 

0'" • f. I ..1.. ... 1 • I 

200 300 400 600 aoo 700 800 gOO 1000 1100 1200 

Ul 

-f 

0 

Temperature, OF 

urn ~),.kt I DeNOJJC oS.r LENCER ~ ~ CATALYTIC CONVERTER/SILENCER vl I . ro 

leAl.E. A~~ROVI!O ay, DR"Y'" BY, I DATE: I ' . f ftCVlstD ~ 

Houston Industrial Silencing P.o. BOX. 19835 HOUSTON, TeXAS 77224 I __ ....... _ ....... __ _ 
~OS5 • ...forrathan- =-' ".-... . ."-

From: HIS {his@hisdnox.com] 

Sent: Thursday. September 19. 200211:59 AM 

To: jonathan.goss@elpaso.com 

Subject: Oxidation Curve 

Jonathan: 

The oxidation of formaldehyde in this application tracks the curve for CO closely. 

Starting at approximately 400 degrees F_. the curve will parallel the CO curve. 

Sincerely. 

Harold l. Harris 

CAP-HIS Emissions Reduction Systems 

Phone: 281-463-8883 

Fax: 281-463-8951 

his@hisdnox.com 
.AppendixD 

Exhaust Diagram for Emissions Unit COO3, Caterpillar G3616 

32" • 

Catalyst 

Exhaust Flow -----I~ .... 

15 

Test Port 

Test Port 

Temperature 

Transmitter 
.. ~: 

AppendixE 

Unit Operating Data 

16 
A ISouthern ep Natural Gas, 

_elPMooompany 

"HG 

'HG 

PSIG :M.5; i\1,.3. ~~ o.Oj. 0.0, 

0etF I'; 140: '.5~ 

DegF 791 ;eiJ; '. 110' 

.~.. 'i!j'!s'l. ,11; 

DegF .. .. ,~, ... 1!1: i .. 1'.': .. ¥ . .!IJ!II .1,u: ,'~ 

Qevf, , , • ~!i ,!~)., .1 '5:1; 

I!HP 01 11211' : 2110; 

, _. :.' .~·~t .j;~ol " ':',82,1; 

'~§.·I~_~o.~ :,!!-~-~: +~:~t~-='~ .. 18~~ 1!I,~I)I-~- ,.711 

I . -- :. 

i~ . ~ i *---

115: 

1041 

125; 

1361 ,jij 

'541 ..os;: 

"~'I ~~~. 

,~!!-

Thomaston Compressor Station 

Unit 3 25-Hour log 

..0.5, 

110' 

23.2 

0.0: 

'86 

110, 

101: 

I": 

1401 

126: 

0: 

0,0; 

.°:001 

!It 0: 

~'~J 

'.5; 

24.5: 

, , 0.0' l·i 

185; 

H' .. , '01' - I 

'421 

'07' 

... I, 

01 

oo! 

0.00' "-'ot 0' 

-0.51 

'.3j . ~7,Oi 

: 0.0,' . , .. 1"421 

HI' , 

, ,"I"~ 1061 

,il! -i2lij .. I "ill .. I ... , 

. o.C!O .' 

o.!,' .~ 

!.~~J'. i. 

'101: 

3.2.0 

0.0: 

1OS!' 

111; 

-3-----::+ .. ~~l, ,~21 

115· ---I" 

84' 

~-.:.. 

0' 

104' . , lU' 

0,0. 

105 

l04i 

15' 

, ~~. 

,11?: 

13: 

0' 

0.0: I!.~i -~:~---o-:.:~I'o,OOi .. 0~1. 

---.1-.... o! 

---l--ol ·-1 .~t 

86i 

o! 

2$' 

-o~r 

100, 

33.1 

0.0. 

102~ 

'00; 

,~! 

89, 

1111 ,. U: 

Q' I 

0.0, 

~!l'l.! 

~I o· 

121 i 

17! n1 

Stitt DatelTlme: 7/1112002 09;00 

End Dale/Time: 7/1212002 09:00 

0: 

211' 

..0.4 

100' 

33,. 

0,0; 

99' 

100 

82; 

88, 

,~~ . 

12: 

o 

0,0 

000; 

,~: 

0: 

12: 

88 

t3 

O' 

25: 

-0,5' 

'1 

33.tI, 

0.0, 

lit 

117 

Iii 

.. I 86' 

':i 

o 

0,0: 

0,00' . ,. 

..... 0' 

o! 

-0.5 

117 

3U 

0.0 

115 

115; 

:_ "'i 

15' -, '07, 

II' 

o 

0.0 

O.!!": 

OJ 01 

00, 

o 

352 

0.0 

'".,' 

111' 

o 

19, !. -iiI • i 1041 

I 

.. 

._, 

'~l 0, 

!II!. I 000 ·t· .. ·:.....! "w' ___ ~! 

0' 

... 
AISouthern ep Natural Gas .... I:l!"aoc:ompenv 

_.!!..P!t_ 

. ~.­

... ~= ... - PSIG 

ps.o 

".A~~ .... ~F 

.~ 

OeoF 

.~-. 

,-O!QF···I---~··"-·:":"~ !'H.!' ..•. 

l4SCFH' " .-~- .... -

Thomaston Compressor Station 

Unit 3 25-Hour Log 

79, 

. I 10' 

. I 801 

-:::j.-·~I-·-..!!t-·!!!j-"~I."~' ~'. . ' .. ,°1 0.01 "]i:Gii! " 

"_ ... ;1. 

$tart OalelTime: 711312002 09:00 

End OateITime: 711412002 09:00 

82 79' 

37.1' 371; 37.2. 

0,0; o.Oj 0.0 o,!'; 

79, 79; 79 7. 

~~t; 79 19: 79 

n: 71 78 7e, 1"5, 75 

19 79: 78' 7. 78, 78' eel ., "' "1 98~ 17. '7' 97 97 

~11 79i ... -r 

T 

79, j!r. : ~-: ~ ::-~t~ 0" 

0.0; 

0, 0, 0, .0: 0.0 0.0, 0.0 o~ 0.0, iaOl ' '0'-;: ·"1 0.001

" ~oo . 'i~! I '" 0.001 

. °1 !l: 0; 0; 

"~! -~~ 0: 0; 

"'I" 

.. 

.. 
A ISOuthern ep Natural Gas 

tlftl!lPMoc:ompeny 

RPM 

,,,",~-.~.L 

... ,~. 

"tIG 

".":"~,: PSIG 

.. , ..-:'~'''''I-

-.~!: .. '-"-"i~t- . -~.-- --- -

,.._~f 

~-3~t--I-:'~tThomaston Compressor Station 

Unit 3 25-Hour Log 

79' I 

1!1 

111 

, 99. -, lilt 

ot 

T ._O~I 

.0C~1 

~j 0: 

Start Oatatrll'l'le: 711412002 09:00 

EIKI Oate/Tlme: 7/1512002 09:00 

.o.S 

82i 821 82, '1 " 3II :16.21 cO, . 3111; 

0,0; 0,0 0.0' 

eo1 801 . .o! I 79' 79' 79; 79 

79i 78 77 77' 1a~ . 17. 

81i 8I?: 80, 79 78i 79, 

99: 99 98 98, M ';e: 

81; 791 eo, eo 79, 79! , "t 01 ci: o' .. !It .. 0, 0· 

'O,';i ,L ",.' _j, 

.001 O.O! 0.0 !I,oL ,,0.0! 

0,00' 0.00 0.00' 0,00, 0.00, 0,00 , . -I .~~ , 'o! 0' ° 0, ° 0: 

0; G- o 0: ° 0, 

eo' 79 79' '" ... 

82' 

.. 
A ISouthern ep Natural Gas .... EIPMoc-...v 

[~~~~ 

I:D~~T~ 

'~.T~ 

"HG 

OliO 

PSKI 

PSIG 

o;g,: 

~ 

~ 

~. 

.0egF 

[)egf. 

IlHP 

'II. 

.~H 

79! 

.. ,3!I:~j. 0.01 ",,' 

7.; ni I· 79' 

.. -t. 

IJI, 

80' 

0; 

0,0 .~ ., fO.!!O: 

•• "1' 1 

130, 

130: 149: I. 

.: 4305; .wn' 

12.01 . icio.isl tiii .• ; . ··,·_·I·····j· 

:~!. ~;I··3~i . 72'IIIL !'!I!':' .. 7!~i 845! 8M _. 

107; .. ' 71i,' ... :...::1 

,.7: 

II' 127: 

121: 

'lI!f 

3429; H7.: 

~·J"f:' .ei!i 25~'~!J .3O!Il ... , 

: ~1:~~4401 

122' 

;3Ili 

·w •• 

133· 

ieoi 

Thomaston Compressor Station 

Unit 3 25-Hour log 

00; 

183' , 182! 180: .H~I 114' ,90i '90: 1871 

124 122: 120: ';~i .. , '341 lH: 134:. '3!, 

134; 1:n! 1321 127; 

181 III! 1$1' 159' -. 4410, 439S. 4393: 

100.1, 91.Oi .. ,~- II.': 

; .:A:!.41. •. '1 :13.84. 33.M! I . I 

33111 3321 ".: '11' 

... 1. 

~.5i .o.is; '. . "., " 

.... ~ -}7~lh~i ... _l!.~ .o.~ 

1~1_ ,~~ 129 12Zi. 

14. I" , .... '" : 

·.!!n.I· ... 'tlflj 131 127j 

tt .. 

~, 

.. 

.. Start [)alernme: 711512002 09:00 

, End DaIeITlme: 711612002 09:00 

'1,4:GO Hi: 

~: 0' 

25- 25' 

.0.5: ... 4~ .0:5, ..o.5t 

1,'( . 115\ ,,, ~ 1~; 

lUi 30.2: 3,.oj 3U1 32,3 

"1 0.0, . 0.0: OO! 00, ~.!! 

"" ".' 'OIl,. 1011,. l~t- ,~'! ,i8: liS: III' '04; 100 100, 

90' 88 ee: M; M~ 83'. .. . I 

,

971 94' .Zl 90: 891 88 

'23: .. ~ 11" . --I":" --:1-' '20' liS, . 113:' 1iil 

117: 86' 14 83 82: 82 

o· 0 0 0 0 0 

.00; 0.0 0.0: 0.0· O.O! 0.0' 

0.00, 0.00; 0.00 0.00' 0.00' 000· 

O! 0 o· O· "0; 

- 0; 

0 o . ~ 
A ISouthern ep Natural Gas ... EIPaIlO~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start Datemme: 711612002 09;00 

End DalefTtme: 111112002 09:00 

- ~ -'!- 'I --~ -- ~- i--"-I---" 'i'i'! :o~! 4~! .o~i -4jl :oi~':o~'~-!"-!--:ci:-':O~ .oil·:Jii· ·.oi~·!S! .o~i -4~; ~! 15; -Oit - -.. -, ! ;,' .t-..... ''f'' -----,;j-1 . ~--. ... .'-N -- N -" .... ___ .-L ~ ~ j ..... ; j- ;;,-.: . ~ .. ·If .,. -- ... ",-_ • 

.. _~:5i3!·!I' 34.~ ~A1 .~'! .... 3:!~ '-~l ~:' ~~ 34.11_M:~ .. ..?s..o; 35:1 35,2, 354; .!lUi. 35·Ii, 357 311;11; o:oi~:O. 00. !.j) o,~1 .0:01 I!O .. !':!I ... 0.0 .• .....!o ._. 0.0 _ ... ~o:l!l.o:o.. ~.'!i 0.0; ~,o:. o,!I. 0:\11 ~,o, 

:;:: ~I l:i~-~:~,; ~ ;~f-:1iL~ _i:f ~j-~ ~-~r -;;. 

2 ~-:: 'l;l '::!~i l:ll:---::~i~-:ii :l: _ m-1k ~ -l!! ~ .• 10#1, 1071 ~7i ,l!17j 1071 ,oj.l,~i "~l' 101 -~, ;~".!!is "~I - 'l~i' . lci4l 104j 1o,i 10al iOi Wi; 

---"'---"1--"1 ~: ~; 1- ':i ~J -', ___ N -1"1 -~~ -I -! M .. "i- ••.. O; ..... I!L. OJ. 0l!'!' .~ __ :l .. ~lo_' __ .o_ .. __ o .... '~-C!i 0: 0: 0; 0 _~j" 

_ .. C!'C1~. 0:01 o~; .. .!':OJ !'!'j . ~ol 0.\ ... o,~: . o'~I_..JI·o. _...!!,o . _ J!'!!l C!'O, 0.0 0.0, 0.0 !l.0 ~II: .O:!, 

0.001. 0'~1:' II~ ~~l .. o.~: .0·~1 II~J _o:~i o.~ -I!~.- .. !'~ .. o:~i o~i 0.o:~ o~ o~. 0'0: 00:' I!~: 

iii o;o! '0.' . O!·· o· . OiOl·"j-~. -_. 'ci: 0; 0: o· 0' 0 . o· 0 "I . '. " ., .1 ., i-· .... ·-·.. . , • ~i 04: .. "'I ~: . "'I ,~: ,.. 11'" .. " ....... 1 1IIt,.~: 1M 83; 11 12 02; 

!14 ,,: !/IiI; .. lI!l ~; !/IiIl~. ".1-' ~ ... ..,: . -: ,IIi 87, elf IS, IS .!4' H H H' 
A ,Southern ep Natural Gas 

",flPNocompM)t 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start DalelTime: 7/14/2002 09:00 

End DaleIT.me: 7/15nOO2 09:00 
A ISouthern 45!J:) ~atura. ,~s _EIPuo~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start DakllTune; 1/1512002 09:00 

End 0aIemme: 1/1612002 09:00 

... 

,J", ... ~~ :lr'lJnIta~ ';\1:00,' ". 

A: .... j "I A: 
At. ,Southern ep Natural Gas ... EJ fIIMocompeny 

Thomaston ~pressor Station 

Unit 3 .25-Hour Log 

Statt DalafTiIIle: 111612002 09:00 

End DaIafTIme: 111112002 09:00 
A ISouthern ep Natural Gas 

IlAElP'e.lOc;otI'iIpeny 

Thomaston Compressor Station 

Unit 3 25-Hoor Log 

Start DllelTime: 711712002 09:00 

. End DatelTime: 7118/200209:00 

• ' .... UnIts"" 1:9:t)(,. ~O:OO '11:00 \12:00 «:00. (5: 

AI A_I ", "I AI ftl 01 ft' 01 0: 841l .. 
A 

t

Southern ep Natural Gas ... EI PII.o c:ompatty 

Thomaston Compressor Station 

Unit 3 2S-Hour log 

SIart OatelTime: 7/18/200209:00 

End OatelTime: 7/1912002 09:00 

.. 
AlSouthern ep Natural Gas ... EI fI'NoCiCltlll*'tI' 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Slalt DaleITime: 111912002 09:00 

End Datelflma: 1f2012OO209:00 

,. 

UiiIts~'fi!O' '10:00 '11:00 12:00 13:00 4:00 ,15:00 >,16:00 '1\1:00 ~18:f» :.19:00·20: 41:00 -2 !i23.'OI). :f • J,ft~. i2:00~ ~3.1)b! ~4:OOt ; 5:00- "8:()(H \q t~. .:.~ 

&Z'8tep~-=~ "" ~~-::: =::-~'.' !~ -"~I-l·~-~·~··!~ .... ~~! .~~I ,~ .. ];L..~o; .~:~L.~! -. ': .. ~t··~! ... ~l .. ~i ;: ~: ~; .J; .~ ~.­

~:;:~... .; .. ~ ~~ ... ( .. }~ ~~-j~,-.~~ -~~il' .-~~ --~~ '~R .'~4!l .. ~~ ~.:~!. ~~ .~~~_ ... ; =~.o ... ~-··~l . r~\ ~5~- i;; ~J: :\ ~;~:j;~ .... !!!."""'-_. u_ . . ""'" __ • -l-'" -~. . ",I· -n, _2L~ '!.! _n-t. "-~l- -'!_~7 •• n.' 18.0 __ 780 18. _ 78.0 78.\ _~_ ~ol E-~' 2"'1 28~' 27.1); 2!~ . .J8,!,2!:! 

!,,*08Ua11ifo1d"!!!!'!!.._ •• _~ •. __ ~ .~.o •.• .!IP ~t'''~-'~~'' ~:o .. !.~ .. !!:!! ... .!!.O. __ O.o_. 0.0 00 0 0.0 0.0 0.0 _lI.:.!1~ .. ".!o •. 001 !'.!l1 .,?:Ol .. l!:.'! .. ,,0"'1 .~.!I." 

'JIcUIW"INeIT!'.'.!!!!!!!!. •• ~ _ ._.'~ ..•• .!~._.j!.7 .,..!!l_!.1t ~ .. ,.11t _, ._1.!5 .11t •.• t!J. 17'. t73 _165 t8t-l!! 180 .. ~l .1~ ... ~t .. t~t ~~ .... ,I2S ..E!!l- .. !!! 

... ~~;==. .~. ..t:r'··~1 ~: ... ;~ .~ *il ,iii .. ·1· i~l. ·;~t .~ ... ~:-::: --:: :: :: --~- ':1- ~~ ':.~ 'l!,'~--f-'~l .. "':, -

'O..ieiT~ .. ---- .. " ~ ~ ._." -tiT· , .. -i,l - - ·· 135 

... 1 . iiil " , .. .. 

li9 • -.(. ";401"1.\1 "."21- J 

_ .. ;im' "r"-' 134'" 1» _., -"'29 "... -:w --

121 ._. III .... \,9t ;:..,. ';oe ·1· 108' 

.. ' 1091 I toe: .. to,;- --, .~!: ., "~97 ,_.' 1:!:!!!!.<!.1"I.n~.. . ..~., .• ~~ ..• :!P • ,13~ .. 1~1 .. ~~7 ,t~!1 ~37 .1~! 1~:' '38 .. ~~ _ 131 ._~ 123 122 _ 122 ._.',;1 ... !~, .. .14$ 14~ 1~!: I~l I~ ,.1~: ... '~ 

Se=~ .. ,'.-.~~.'. ~ =~'''~-~~I: ~·-r:l:,·t-f. ~~:~ ~~. ·~u~_A!i -:.: :~-~:~ -i -i ~~tl·J ~-~ .. ] -Jf'~~:: ,.1 FueI!!!!~ .• _.. .... .~_ "~;r .. t:1!"-~:M2..J!~t.3!~ 3:~. ~~ ~~ .33i:l~ 'Uti'" (13:, .. ~~ 32i: 33: 33.!_.!!~, ... 33~1 ~! ~~_ !I'~! o.~! o.~j Cl~ ~,~:" o~ =~'~~;O;i ~.HRS-nti'-me .. -ti9:ii-e9~_ '-iiS~'-Moe -emf-... , .73"'" _-1931-. --- -1' ''Or--'~ '0: 1,: 0[·'0 ·.o!ii 

:=UIIlT#M:~~.~-=-~~"- .. ~:3lir:t!f=:_:-~-.. ~···mt=~---~=-:,=-: ':-: :' :: :··_.¥~r ~f· .~+ ·'1~1 ::t ;~l~~·····: .. ~;~:.. ••. ~- -- 413 • -:F '-~'''''m _. 713 'mf •. 1M . _~~u_ .... ,- "7ii "'1741· -172 m -- 78$ 788 713 .~ ... ~ .. iiil . i501 110" til""851 MI' "89 
A ISouthern ' ep Natural Gas . MElPNo~ 

Thomaston Compressor Station 

Unit 3 25-Hourlog 

Start 08te/'Time: 1f2012OO2 09:00 

End DalelTIIM; 112112002 09:00 
A ISouthern ep Natural Gas "'ElfIMo~" 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

SI8I1 0ateITime: 712112002 09:00 

End Dalern",.: 712212002 09:00 

... 
A ISouthern ep Natural Gas ... E'''*-O~ 

Thomaston Compressor Station 

Unit 3 25-Hour LOg 

Sialt DateITime: 1T22J200209:00 

End DaIelTim8: 1123/2002 09:00 

-.. 

:'I' 
A ISouthern . ep NaturalGas 

"'EtPMo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start DalelTime: 71231200209:00 

End DalelTime: 7124/2002 09:00 

" 
ep A 'Southerh NaturalGas 

IftElPMo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start DalelTime: 712412002 09:00 

End DalelTime: 712512002 09:00 

.. 

'" 

~.e:oo. 110:00 \11:00 <.12:00 .... 3:00 '14:00 !,5:00 ... 1 :OO1i :ooJ. ",,:00 Al 1111 ,,5.1)(); ft! . '6:tm tl! ." 

"I I'll tU 
A ISouthern ep Natural Gas MEIPao~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Slart OaleITime: 7f2512OO2 09:00 

End OaleITime: 7I26l2002 ~:oo 

15~ 

.0.51 

154 - ' .... i 

• 23_9i ~.$i. ~~iI- .=>-.=..:;' 

... 0.01. oOT 0.0 _.. ..1 

,a, "" ,., ,... ,.. ' ,~' --- 14$ _ _ _'~ '.~ ••• . .. 

-=~ __ -:;g __ --::=~~_ .•. .. _'''' :::r .__ "'''I- ._ ""'I ._ ':I _ ''':::r---.:J'"--'';;,- '''''I, .a" H~I 1541 gil ~ ,~ -jj3i- 135 3-~'- 10111' 107' tOi! -

i~t·· "~i' ~.-'!iii-:­ !~I _~7 .• _ .. ff.. 

00 o - iio ~ - ---. - --., __ 

-'-'::1----== ~_ _'''';';'1 

... 
A ISOuthern ep Natural Gas 

W\ EII'UoCOtl'll*>Y 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start OaleITime: 7126/2002 09:00 

End DaleITlme: 7ml2OO2 09:00 

• 

.. 
A ISOuthern ep Natural Gas .... EI PUoCOMl*'1 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start Datellima: 712712002 09:00 

End OalelTime: 712812002 09:00 

.. 

.. 

',j' 
... 

... 

e

AplSoutllern Thomaston Compressor Station 

Natural Gas Unit 3 25-Hour Log _elf'Mq~ . ~'" 

$1a11 OatefTim8: 7 f28I2OO2 09:00 

End OaleIT_: 7J2912002 09:00 

<Ito9:OQ JlO:OO .11:00 2:00 '" . 4:00. 5: 6."00. 7:00 • i1 . 1m , ~ ~ ~ ~ 
A ISouthern ep Natuml Gas . ... E1PMo~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

stiH1 DateITime: 1l2912OO2 09:00 

End OatefTIme: 1l30l2002 09:00 

.. 

.. 

~ 

. 
A ISouthern ~J:t t4atur81~s - "'E1"-~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

start OatelTlme: 7f3012OO2 09:()Q 

End OatafTime: 7131f2002 09:00 

UnIts lI!9:00' M, -.11:00 t12:00 '013:00' fit :00 115:00 ~6: :11:00 18..'00< iOO :00 . :00:11 4:eo. , .,6:00 ~ ~ ~ ~ ~ ~ R ~ 0 

0pef!II0!!'-0IIIy tto.n _ --._.,-!:!'i 

IIISfCOIIIy ' ___ '.'_'.'.'_ !-~:~ __ . 0, 

I:r"~-o.iil'_~-::~~': ~=:= =~:_, __ l!:~! ,A!!!!g!SpeedDaily ~_._. '"____ _ -~i 

I=-~~ -=.-':= ~~-::~_-. ... ~;I ,SleltSllquenceF..... ______ CoIInIs ___ ••. _, ._~I 

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Oop!c!!yYTO .-YTO , _____ --~~--~i ~ 8SCF ,_....!.,,!: 

Fu.I.~~ -"--- ,.=S-----.... ~I .-LIfe· kCum. Houra . I 151l' 

... 
A (Southern ~p ~atural~s _E1F"Uo~ 

If=.~--~~='··-=-~-~:i 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start DalelTlme: 713112002 09;00 

End DalelTime: 8111200209:00 

.(1.11' 

iiiil 115\ 1~1! -'051 

.!!:!!. 0.0 28:...11'._..!!:~' 0.0 00: ··~'!I 0.0 __ .!l!1~_ 00 

124 Iii' 11.1' ;10: --108' 

-;22, ,·,-.1 1"51 '11;' ·;o.e

r iO:zl '91~ 89:" .! .• ; -'_1' Mr , -"r ...... .~ -to 

. ::1-- I~L .. 'lik- ·i~f-·-·!,lt···I~1 ... ~~! ii6~ !!L.-~i . ~\ . . ! ~ ~ -ft ~ ~ - o~~i i.~ .. ,' 0°0:\ ... oO.21~c!c!:" .. _- --01' "0" '~oi ··-i 

0; 0) .•• .!j_ •.. _.2~. 88' 85' 1M: Il, 9419,: ~I --: .. 

• 

~ 

.. 
A lSouthern ep Natural.Gas 

tift EI PhoCOl'nPlftW' 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start Oatelrl!Tl&: 8f1J2002 09:00 

End oatetrime: 8I2l2OO2 09:00 

.. 

.. ~ 
A ,SOuthern ep NaturalGas 

.. EIPMo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start OateITime: 8I2l2OO2 09:00 

End OalelTime: 8I3l2OO2 09:00 

'" 

" 

" i~!Oo:::c:I'II':2l!2~i\'JiR:x'!_n:!~~~=Jf4r.::OO'=t!#:r.:[5;~:oo;;v!~lr;p;¥S::-':OQ!::'l_m!~~ __ ""'~o=-_ --_ :. 
A ,Southern ep Natural Gas MElfIQo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start OatefTime: 8I3l2OO2 09:00 

End OatelTlme: 81412002 09;00 

" 

~~ 

-8:00'1 ' 0:00. AII!OO >:12:00 3:00 4:00 ~5:1)(). 6:007.:00. 8:C» '00; *:OOt .... hi AI "I AI n oj n n G 
A ISouthern ep Natural Gas l1li El I'UoCOl'flP'lAt' 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

~ 

SIaI1 DatelTime: 81412002 09:00 

End DatelTimG: 8I5l2OO2 09:00 

~ 

" 
A ISouthern ep NaturatGas 

_ElfIWo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Slart OaleITlme: 8I5l2OO2 09:00 

End DalelTime: 81612002 09:00 

... 

~ 

.. itJnl18 ',10:00' ~11:00' f12:00 1113:00 ~4:OO i1 U8:OO' \17:00 t'l8:00 11. "20:00" 1:00 '22:oG' 23:00 .- _I _1 .. -.. AI At ft.' ni 01 
At, 

t

Southern ep Natural Gas .... EtP'uo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Slart OalelTime: 8I6l2OO2 09:00 

End OalefTime: 8fT12002 09:00 

'" 

.. .. 

..... 
A lSouthern ep Natural Gas .... EIPMo~ 

Thomaston Compressor Station 

Unit 3 25·Hour Log 

Start. DaleJTme: 8/7(2002 09:00 

EM OalelTlme: 81812002 09:00 

.. 

""!! .. 

..... 
AI . Southern ep NaturalGas 

an EI 1'Iqoc-.. 

Thomaston Compressor Station 

Unit 3 25-Hour log 

SlartDatefTime: 8/812002 09:00 

End DalefTime: 81912002 09:00 

o· 2$' 2$ is~ 251 

:o:;t" .0 .• 1 .0.51 -OJ' - _~r. -82i_.!iL!.!. 35.91 3U! 3Ui 31U 

.,~,'o~;~,_~ '~~, _.~~ _ , l;i -.. r::. J-- 19 "" 

T61'i5i T41" ~' 191 !~.J'~.'I. --''n .. 9\11 9\1' 18' 117 

78. 171 :~: -15j 0: 

. 

?-

~ 

"' ... 

.-
Natural Gas Unit 325-Hour log 

Start 081811"_: 8I9l2OO2 09:00 

El1d O8te/11me: 811012002 09:00 

e " AplSouthern Thomaston Compressor Station 

"'ElPMo~ 

f!I 

~~Iii!~~IIBi~~~~i!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~m§~I§~ Unllll <40:00:. \1:1:00 ~2:OO 113:00- ~14:OO ~5."OO 8:00 ~7:OO, '18:00' 9:00 4O:Oa ~.OO '22:00 '!23:OOi 100 ~ .. 
" 

A ISouthern Thomaston Compre$sor Station ep Natural Gas . Unit 3 2S-Hour Log End OalefTlme: ... EI PuoCOl'lljlllfty 

Start OalefTlme: 8/1012002 09:00 

811112002 09:00 

'!--

"0:00 .t:OO!l2:O& :13:00. ~t":OO }'IS:OO' ~18:00 1:00." . \1. ,20:00 121:00 ii22:OO • ~ ~ ~ 
A ,SOuthern ep Natura. 'Gas III'IEII'No~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Slart DetelTlme: 811112002 09:00 

Em:! Detel11me: 811212002 09:00 

.. 

)0 

~ 
A ISouthern . ep Natural Gas IIftElPMo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start DalefTime: 81121200209:00 

End oatetrtme: 811312002 09:00 

• 
At. ISouthern ep Natural Gas .. E1fWocOMPMY 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start DateITime: 811312002 09:00 

End DateITime: 811412002 09:00 

J" 

<" , 
A ISouthern ep Natural Gas WI 1:' f'aIoOCltftlNlRl/ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Slart DatelTlme: 811412002 09:00 

End DalalTime: 811512002 09:00 
.'11 

A ,Southern ep Natural Gas 

",,1:1 PMocornpen, 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Slart Datemme: 811512002 09:00 

End Dalaffime: 811812002 09:00 
A ISouthern ep N.sturslGas 

M EJ PMoCCll'ftPMr 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start OalefTime: 611612002 09:00 

End OalefTime: 81171200209:00 

.. 
A ISouthern ep NaturalGas 

IOftflPIIIMUlomp_>t 

Thomaston Compressor Station 

Unit 3 25-Hour log 

SIa!1 Oatefr_: 8/1712002 09:00 

End OateITime: 811812002 09:00 
A ISouthern ep Natural Gas 4ll'lElI'IIIeo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start DatefTime: 811812002 09:00 

End OatefTime: 811912002 09:00 
A ISouthern ep NaturalGas 

IIIIEl .... ~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start DatelT"lI'n8: 811912002 00:00 

End DatelTime: 8l20l2002 09:00 
A ISouthern ep Natural Gas MEI.....,~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start Oaleffime: 812012002 09:00 

End Daleffime: 81211200209:00 

... 111_ 0:. 01 01 25· 25' 25' 25· 25' 

.' ~T~'.' :0;; ~~~~:!it· -.o~ 

~1M!1_ .'l)Oj. 11

1

1" ~l' 9il. _ 

_ ,~~~~:I ~~ -, "1~ -- .~' '::;:I·~: ~l --~\:i - -. I --I. -" -. .-.. 

- e:ci ~.ll I( eo: 7!! 

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- .. . I ,. -. - -;;1- .. -' " - 8~ _ 8!i 1101.. ~;_ 1~ 

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1 ~I OJ 

o,!.., , _Dill II~: .. !ll?f. ~_ _ 

O.~! o~: o~ o~. O~i " .. ~I " .. ~; OJ !L . .!?i- .. ~~7! 
At ISouthern ep Natural Gas ... EI PMocotnplllllt 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start DalelTim&: 812112002 09:00 

End DatelrJm8: 812212002 09:00 
A ISouthern ep Natural Gas anEIPIMo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start OatelTime: 8I22l2OO2 09:00 

End OatefTime: 8I23l2002 09:00 
A lSouthern ~p ~atural~s ... E1I'Mo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start OaleITime: 8123/2002 09:00 

End OaleITime: 8/2412002 09:00 
A ISouthern ep NaturalGas 

" .,. El ftuo c:ompenr 

Thomaston Compressor Station 

Unit 3 25--Hour Log 

Stan OateITime: 812412002 09:00 

End OateITime: 812512002 09:00 
A I Southern ep Natural Gas ... ElPMo~'t 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start Oate1Time: 812512002 09:00 

End OateITome: 8I26l2OO2 09:00 
A 

t

Southern ,ep Natural Gas ... El PUocOt\'lPllftr 

Thomaston Compressor Station 

Unit 3 2§...Hour Log 

Start DatefTime: f!I26I'2002 09:00 

End Datetrime: BI21I2OO2 09:00 
A ISoutharn ep Natural Gas ... EI PaeoCOf'l'lPlOMlY 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Slart DatefTime: flJ2112OO2 09:00 

End DalerTime: flJ2812OO2 09:00 

• 

'" 
A tsOuthern ep Natural Gas MElI'Uo~ 

Thomaston COmpressor Station 

Unit 325-Hour log 

SIaf1 OateITime: 812812002 09:00 

End OateITime: 812912002 09;00 

• 
A ,Southem ep Natural Gas M£II"Mo~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start OatelTim8: 8I29l2OO2 09:00 

End OateJTlme: 6l3Ol2OO2 09:00 .. 
A ,Southern tStp ~atural~s , liftS PIII4IoC«IIPMJ 

Thomaston Compressor Station 

Unit 3 25--Hour log 

Start DateITime: 8l3Ol2OO2 09:00 

End DatelTlme: 8/3112002 09:00 

Ii 

'" 
A ISouthern ep NsturalGas 

11ft E1f'MoCOi'ftPlll>t 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

51l1rt Oalemme: 813112002 09:00 

End DalefTime: 91112002 09:00 
A ISouthern ep Natural Gas IftElPuo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start DatelTime: 91112002 09:00 

End DatelTlme: 9I2l2OO2 09:00 

310i 

.. , 0.0: El ,7n 10l !Vi. 7 .. : 73' 73' g}' 'n\ -,.; '~j~'_~' .. ~~ c .. 

0, '-;,io~ _I ::1 <- ._.l 

o.o!. !10, 0,01 

000; 0~1 O~l 

"ij:, iL eo eo' 

.. 
At. ISouthern ~p ~.atural~S ~EIPMo~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start OalelTime: 9I2l2OO2 09:00 

Elld OaleITime: 9I3l2OO2 09:00 
A. ISouthern ep Natural Gas II/IEII"iQoc:~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start OatefTime: 9I3l2OO2 09:00 

End OatelTlrne: 9/412002 09:00 
A ISouthern ep Natural Gas "'E1PMlo~ 

Thomaston Compressor Station 

Unit 3 25--Hour log 

Start DatefTime: 91412002 09:00 

End OatefTime: 91512002 09;00 

.. 
At ISouthern ep Natural Gas 

eI\ Et AMooCClll'llpenlf 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start OaleITime: 91512002 09:00 

End OalefTime: 91612002 09:00 

.. 

., 
A ISouthern . ep Natural Gas MEI"","~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start DatelTime: 9/612002 09:00 

End DalelTime: 9f1f2002 09:00 

,. 

.. 
A ISouthern ep Natural Gas ... EtflMoc~ 

--~ 

.. -~ 

'HG 

... ~-' .. PSIG 

~ 

~F 

0egF 

.. ~ .. 

.0,."-. 

.. I.>.!it:.._ 

8HP 

-........ ~-.---

Thomaston Compressor Station 

Unit 3 25-Hour log 

Slalt OaleITime: 9f1f2fJ02 09:00 

End OaleITime: 9/812002 09:00 

79 

36.7: 36.9: 36.9' I . , -I' 0.0. 0.0, 0.0. 

. 78: 711; - 77! n· 

79. . 7'; 79; . !7i 7~:1 

751 74' 13' 72' 72, 1i; 7el-rTf' .. ~ iii! 

96i -.: 'M! --~T" 94! 

re! 77 7~ ~1 7.: 

~ ~ .~ ~ ~ 

00; I!:~ -- o'~lI. -~:~i -- -'!:~l . 0.00: 0.00 0.00 0.001 0.00 

"'jj'. '. 0: ~ol . -il',: ... :~' o 01 o. 0 0 

~.~i- ::~! '~1" ~~L . 

" 

" 
A ISouthern ep NaturalGas , MEIPao~ 

Thomaston Compressor Station 

Unit3 25-Hour Log 

Start DalelTime: 9/812002 09:00 

End OaleITime: 9I9l2002 09:00 

</I' 

.. 
A ISouthern ep Natural Gas ... ElPuo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start DalefTIme: 91912002 09:00 

End OalefTIme: 911012002 09:00 

0.0: ., 

77i 

0: 

721 

76i 

~.6j 00; 

7:1 ., 

7'; 

74' 

f' 

.,. 
A/Southern ep Natural Gas en EI Paeocompeny 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start DatefTime: 911012002 09:00 

End DatefTime: 911112002 09:00 

~ ~ ~ ~ ~ 

.~L ·~t· 25] --~-- ~~!- ~r---ji; _ -o~-o_~l . -05: . .:Oc~r _ _:'!.~ ~~: 133' 1261 1181 115:' 108+ 104! 

~27:40 __ 28'!1 i!l.9i 3ii~! 0.3i~ _- !i,~l .0.0, 0.0, 001. Clc~1 . ~O! . _0'111 

'l~i- -~~l: '}l;t-:-:~;'t -:::- -~ 

i~1 ,~i,~!-,~! l-;~! - ... -~- I!5I ~j8~i-~40-- !!! .. - __ .01 01

' . OJ __ 0, 0111 

CI,O; . 0 111 O~: 0Il, !lOr 

O~I O-~i O'~l 0.00· -.. ~ --01-'- 0: _ ........• " ~- . I 

23J! 

~ 

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.. 
ep " ISouthern Natural Gas - .-ePlMocompMl' 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start DalefTime: 911112002 09:00 

End DalefTime: 911212002 09:00 

~L .°1 25' 25: '1 ., O~l O::i 0:, 32.fj

' 33.4' 33.~ 34.3; 

. O_! ·ci·~l'· ~~L O·~i. 100' tI1': 115' 93, I ., .. '-'-'f .~. 

1>1 .!I'- ._-~.- .~- .. ' ~:_ eij .. ~II.. .. ~: 91' 891 88- N' 115 

li2i loG! toe: lcit· ,;;; 

- -'1 -'j--•• -::1 -, 

···!I·:-11:-:ii .-. - -."., --r ·-Jr - -. -.. 

.-. :*.~! -, ----I 

- o:~ _!.~; O'~i O~! _ O~i O~i .. .. -- .. i . I . j.. .. i 

O. ~, . 0, 0 0t .0; 

126, "9_ 113' 129' ' . 

• 

T 

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A ISouthern ep Natural Gas lIftelPMo~ 

Thomaston Compressor Station 

Unit 3 25-Hour log . 

SIar1 OalelTime: 91121200209:00 

End OalelTime: 91131200209:00 

.. 

" 

, 
A ISouthern ep Natural Gas ..-Ell'IItocompMy 

.-.-!!~-.--

"HG 

. ~.-

Thomaston Compressor Station 

Unit 3 25-Hour log 

~ 251 25' . __ oj ...... .. 

-~I' :O7:! 

-=~--~~+'~'~~~ . -. ~:~I' . ·--...!I...·-·:~I· . -~. 761 76: "-:;5\ . -7~: 

741 741 

7~! 

~ 

~~:I" 

~gi 

0.01 

76· 

75i 

74 1 

Slart OaleITime: 9/1312002 09:00 

End OalelTime: 9/1412002 09:00 

75: 

75f 

74: 

76' 

93 93' 

77: 771 

oj 01 

oOi OoOj 0.001 0.00 

. 01 . o· --.-1 j 01 .~, 

79' 791 

~O! . 75' 

15! 

74; 

78 

93' 

-j' 77, 

'o~ 

-I 

00,. 

0.00 ... 

0, 

or 

_J ..... '1 

. --~~--,,-:t- --~ -I :I-.:=i---=i.-.--:-3.----!!~··-·!9: 77.' 771 

ff' 

~ 

~ 
A ISouthern ep Natural Gas 

-,E1Puocompeny 

Thomaston Compressor Station 

Unit 3 25-Hour log 

Start DaleITlme: 9114J2OO2' 09:00 

End DalelTlme: 911512002 09:00 

., 

., 

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A ISouthern ep Natural Gas IIIIEI"-o~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

5laft OatelTime: 9f15J2002 09:00 

End OalelTime: 911612002 09:00 

01 0: 01 

2$! 2$1 2$l " .. ~ I 

-:!I:~l. . .o'~i- -G.!,. 82! 191 7!1; 

~ .HJi i6:1! 36 Iii '~!!.. 3!~~ 0.0' 0.1), 0.0' 0.1)' 0,0' nl .. 1111t - '7~"-'16r l'9i 79;' n!' . rat lsi 

14t· "141' 7i1 '!it "-iij . 71~ ,. ni ,0"

5' is: 

~! .. ~~ '-rt -~t' ...... ~ ~ ~ ~ 0 0 .. , . I .,., -". i . -. 

_~.ol o.!,! ~.!, o~. o!: 

0.00) 0.00! 0.00' 0.001 o.oo! 

. Ii oi 0: ;; '0' ~ .. ." 

.. 

.... 

'" 
A ISOuthern ep~~t:!:~ 

RPM 

.~ .... 

-~--.-. 

. ~ 

Thomaston Compressor Station 

Unit 3 25-Hour Log 

Start OalefTime: 9/1612002 09:00 

End OalefTime: 9/1712OO'l 09:00 

_0; 0, ° I 25j 25! 25' 25 

.a41 .(1.51 .asl .(1.5' .(1.5 -&il . e2. '821 '1iz .ii 

·;!_~:o·I-·~·:·=-=;~t~~;~--, tit-.- 3:t 'i:J3:~f __ • __ IWlJ .. _ . .!!! . ~!! .781 !,,2 .. = -=- --L.. . -I 7tl 7t 7t 7tI' 78' -:=T"-=.- --:-.--:-:- ., . -fit' . --19 . 7.i · '77" '77; 

.. -_~I.:. 'i!l 8011ia: 7ti . . ~I ~~I 971 96: 9fI' 

.!'~- ... 80

m 

_7tj19' !.!': 

____ ':!f----:7l--..!!l, -~ -- 0: . ,OJ .!?l 0.0 0.0 0.0, 0.0' o.or O'(iJj"'-OOoI 0.00: 0.00' 

OJ 0: 0: .~; 

0' , 0 

., 25..~: 

.(1.5, .(I .• ' 

itJ-'r'j - 31.1.0; 31.1.2 

·O~L.!~L 181 78 .j... • 

!!L. .. 191 

181 16i itl . 7.: Hi.' iii: 

181 18' --iiI" 

00' 

O~oO! 

0: 

O,!: .. 0.00' 

o at 0, 0 0 

831 83: 83 .,: 

• 

.... 

,.. 

-, 
A ISouthern ep Natural Gas _ElPuo~ 

"HG 

"HG 

~ PSIG 

•.• ~F 

DegF 

DIIgF 

DIIgF 

DegF 

Deg{' 

8HP 

MScFH' " -~.-

Ot o. 251" 25! ~,5i .o, .. r .. ,. ' ... ~ 

.. 71\ 1"1, 

38.21 Mj,' ~: :111.2' ... 1 

0.0! , .... ,! 0.0' o.o! -nii' .' r eo' 7t. .... ' 

~; n.' n, 

18: 11' 1"1' 

18; 7t! 80; 

~; •• l1li' 

18; eO! 12: 

71 

38.0' 

0.'1! 

12 

71, 

8" 

n 

11· 

83: 

1\1' 

. I, 82; 12, 

35.8: 35.8' 35.4' 

o.ot 0.0; 0.0 

83, 8S ie .. I . , 82;. 82 M 

83 86, 811 

821 114 80: . I 911 98' ~! 85;' 86' I. 0: 

Thomaston Compressor Station 

Unit 3 25-Hour log 

112' 82' 82: " 

35.2 352i 35.3; 

0.0' , 87' 

86 

89. 1 

87' 

99: 

35.3 35c4; 

o'Oi 0,0' 

82' 81; 

'1, 81 

12 '1' 

83. 82: 

99' 99' 

82 01 

... Start DatefTime: 9/1712002 09:00 lit .. End DateITime: 911812002 09:00 

'7-

'I' 6:OO+·!-.ootR8@!ffl'9iOO4f o· 0: 0' .O! 0 

25;' ~, 25: ~5: 2S 

.0.51 .0.5, .0." .o,4! .0.4, 

112 ai: 82 82' 12 82' , 35.e 358 35;9t 36.' 36.2 JU 

o.oi 0.0 00 00 0.0' 0.0 

81' eo 80 80' l'lI 79 ;',; 79' 1\1 1"1 19 1"1 

80, 7" 18 18 11 71 

82' 8" 80' 80' 19' 79 .. 98: tIIli 91 97 91,. 

8,i eo' 80, 79 79; " 1"1 

01 0: a 0: 0' 0' o'.ot .. , 0.01 0.0 0.0 0.0' 0.0 .~ -·l· • 

0.00: 

., • 1 

~-!J!li o.~~ 0.00. O.OCf 0,00 

.!li 0' 0' ° ° ° .°1 o~ 0' a 0· a. 

83! 83: 82: ~~: .8~: 

114\ 8J 

71~ 76,