### ATALYST**Am Management,** **Inc. SALT** **RIVER PROJECT** **NAVAJO GENERATING** **STATION UNITS** **1,2 ACID MIST** **EMISSIONS TEST** **REPORT CATALYST** **AIR MANAGEMENT,** **INC. REPORT** **NUMBER 264-001** **DECEMBER 31,2009** **Test Date:** **November 16-17,** **2009 Prepared** **for Mr.** **L. Dee** **Shakespear Salt** **River Project** **Navajo Generating** **Station State** **Highway 98** **Page, AZ** **86040**

### ATALYST**Am Management,** **Inc. STATEMENT** **OF VALIDITY** 

### Salt**River Project** **Navajo Generating** **Station Catalyst** **Report 264-001** **December 31,2009** 

### To**the extent** **practical, information** **and data** **provided in** **this test** **report has** **been verified** **as true** **and correct.** **Michae^WTTaylor President** **Catalyst Air** **Management, Inc.** **2505 Byington-Solway** **Road Knoxville,** **TN 37931** **(865)531-0075 ^•""N** 

### TABLE**OF CONTENTS** 

### LETTER**OF TRANSMITTAL** **TITLE PAGE** 

### STATEMENT**OF VALIDITY** **TABLE OF** **CONTENTS PROJECT** **FACT SHEET** **1-4 5-6** **9-24 25-40** **41-56 57** **57-63 64-70** **71-77 78** **78-86 87-92** **93-95 96** **98-101 102-104** **105-110 111-114** **Introduction Summary** **of Test** **Results Results** **of Testing** 

### Description**of Combustion** **Unit Sampling** **Program Procedures** **Operating Conditions** **Quality Assurance** **Discussion APPENDICES** **Reference Method** **Test Results** **Unitl Unit** **Unit Plant** **Data Unitl** **Unit Unit** **Laboratory Analysis** 

### Acid**Mist Barium** **Chloride Titration** **Aid Mist** **Ion Chromatography** **Coal**

### Reference**Method Quality** **Assurance Isokinetic** **Sampling Equipment** 

### Calibration**Gas Specification** **Sheets Sample** **Calculations Figures** 

### NAME**OF SOURCE** **OWNER:**

### SOURCE**IDENTIFICATION: LOCATION** **OF SOURCE:** **TYPE OF** **OPERATION:**

### TYPES**OF TESTS** **PERFORMED: TEST** **COMPANY:**

### LABORATORY**ANALYSIS: SITE** **SUPERVISOR:**

### TEST**PERSONNEL: TEST** **DATES:**

### OWNER'S**REPRESENTATIVE: TEST** **OBSERVER:**

### PROJECT**FACT SHEET** **Salt River** **Project Navajo** **Generating Station** **Units 1,2** **Highway 98** **Page, AZ** **86040**

### Coal**Fired Steam** **Generating Unit** **Sample Traverse-EPA** **Method Volumetric** **Flow Rate-EPA** **Method**

### Oxygen/Carbon**Dioxide-EPA Method** **Moisture Content-EPA** **Method Sulfuric** **Acid Mist-NCASI** **Method 8A** **Catalyst Air** **Management, Inc.** **2505 Byington-Solway** **Road Knoxville,** **TN 37931** **Maxxam Analytics,** **Inc. 5555** **North Service** **Road Burlington,** **Ontario L7L** **5H7 Mike** **Challis Project** **Manager Rick** **Derrera Lead** **Technician William** **Sapp Scientist** **Frank Mo** **Chemist November** **16-17,2009 L.** **Dee Shakespear** **111 1-0** **Introduction**

## Catalyst**Air Management,** **Inc. (Catalyst)** **was contracted** **by the** **Salt River** **Project (SRP)** **to perform** **source emission** **testing at** **Navajo Generating** **Station Units** **1, 2 and** **3 to determine** **the sulfuric** **acid mist** **emissions from** **the units.** 

### The**sampling program** **was conducted** **November 16** **and 17,** **2009. The** **testing was** **performed by** **Messrs. Rick** **Derrera and** **William Sapp** **of Catalyst** **and Mr. Frank** **Mo of** 

### Maxxam,**with the** **assistance of** **personnel assigned** **by SRP.** **Mr. L.** **Dee Shakespear of** **SRP coordinated** **plant operation** **during the** **testing. 2.0** **Summary of** **Test Results** 

### summary**of test** **results developed** **by this** **source-sampling program** **is presented** **in Tables** **through 4.** **The summary** **tables are** **presented as** **follows: Table** **3.0 Results** **of Testing** **Description Summary** **of Acid** **Mist Emissions** **Acid Mist** **Sampling Summary -** **Unit Acid** **Mist Sampling** **Summary Unit** **Acid Mist** **Sampling Summary** **Unit**

### The**individual test** **run results** **are shown** **in Tables** **through and** **tabulated in** **Appendices through** **3. TABLE** **Summary of** **Acid Mist** **Emissions Unit** **Concentration (gr/dscf)** **4.22E-05 7.71E-05** **8.10E-06 Emission** **Rate Gb/mmBtu)** **9.43E-05 1.64E-04** **1.75E-05 Emission** **Rate (lb/hr)** **0.51 1.31** **0.13**

### The**results were** **calculated using** **the Ion** **Chromatography laboratory** **values. The** **Barium Chloride** **titration values** **that were** **performed on** **site were** **not used** **because the** **values were** **less than** **the reportable** **detection limit** **(RDL) for** **the analytical** **method. The** **titration method** **analysis are** **shown in** **the lab** **analysis appendix.** **TABLE**

### ACID MIST**SAMPLING SUMMARY** **Client: Salt** **River Project** **Plant: Navajo** **Unit Location:** **Stack Run** **Number: Date:** **Load (MW):** **Run Time:** **Start End** **Pbar Barometric** **Pressure: TT** **Sampling Time:** **VM Meter** **Volume: TM** **Avg. Meter** **Temp (F):** **PM Avg.** **Delta (in.** **of H2O):** **Meter Calibration** **Factor: VMSTD** **Std. Gas** **Volume (SCF):** **Vic Volume** **Water Collected:** **%M Percent Moisture:** **Bws Mole** **Fraction, Dry:** **%CO2 Carbon** **Dioxide, Dry:** **%O2 Oxygen,** **Dry: MD** **Dry Molecular** **Weight: MS** **Wet Molecular** **Weight: PS** **Static Press,** **(in. of** **Hg): TS** **Stack Temp.** **(F): CP** **Pitot Coefficient:** **VS Stack** **Gas Velocity** **(AFPS): QS** **Stack Gas** **Volume (DSCFM):** **QA Stack** **Gas Volume** **(ACFM): SO3** **ppm Emission** **Concentration: gr/dscf** **Emission Concentration:** **Ib/mmbtu Emission** **Rate: Ib/hr** **Emission Rate:** **EPA Method** **8A 11/16/09** **599 13:22** **14:22 25.40** **60.0 32.041** **50 0.75** **0.99 27.933** **104 14.92** **0.149 11.4** **7.9 30.14** **28.33 25.44** **120 0.84** **39.7 1,488,714** **2,261,834 0.03** **3.87E-05 8.69E-05** **0.49 11/16/09** **500 15:08** **16:08 25.40** **60.0 32.721** **53 0.75** **0.99 28.382** **101 14.35** **0.144 11.5** **7.8 30.15** **28.41 25.44** **120 0.84** **35.6 1,342,170** **2,025,736 0.03** **4.57E-05 1.02E-04** **0.53 11/16/09** **499 16:35** **17:35 25.40** **60.0 33.024** **57 0.75** **0.99 28.418** **100 14.22** **0.142 11.5** **7.8 30.15** **28.42 25.44** **120 0.84** **35.2 1,330,192** **2,004,439 0.03** **3.80E-05 8.47E-05** **0.43 Average** **ppm 0.03** **Average gr/dscf** **4.22E-05 Average** **lb/mmBtu 9.43E-05** **Average lb/hr** **0.51 TABLE** 

### ACID MIST**SAMPLING SUMMARY** **Client: Salt** **River Project** **Plant: Navajo** **Unit Location:** **Stack Run** **Number: Date:** **Load (MW):** **Run Time:** **Start End** **Pbar Barometric** **Pressure: TT** **Sampling Time:** **VM Meter** **Volume: TM** **Avg. Meter** **Temp (F):** **PM Avg.** **Delta (in.** **of H2O):** **Meter Calibration** **Factor: VMSTD** **Std. Gas** **Volume (SCF):** **Vic Volume** **Water Collected:** **%M Percent** **Moisture: Bws** **Mole Fraction,** **Dry: %CO2** **Carbon Dioxide,** **Dry: %O2** **Oxygen, Dry:** **MD Dry** **Molecular Weight:** **MS Wet** **Molecular Weight:** **PS Static** **Press, (in.** **of Hg):** **TS Stack** **Temp. (F):** **CP Pitot** **Coefficient: VS** **Stack Gas** **Velocity (AFPS):** **QS Stack** **Gas Volume** **(DSCFM): QA** **Stack Gas** **Volume (ACFM): SO3** **ppm Emission** **Concentration: gr/dscf** **Emission Concentration:** **lb/mmbtu Emission** **Rate: lb/hr** **Emission Rate:** **EPA Method** **8A 11/17/09** **731 8:09** **9:09 25.51** **60.0 40.989** **55 1.30** **0.99 35.579** **99 11.59** **0.116 12.2** **7.1 30.24** **28.82 25.62** **120 0.84** **50.8 1,989,956** **2,888,601 0.07** **1.08E-04 2.29E-04** **1.85 11/17/09** **735 9:45** **10:45 25.51** **60.0 42.527** **53 1.30** **0.99 37.051** **122 13.43** **0.134 11.8** **7.4 30.18** **28.55 25.62** **120 0.84** **50.8 1,950,928** **2,893,044 0.03** **4.58E-05 9.91E-05** **0.77 11/17/09** **743 11:12** **12:12 25.51** **60.0 41.993** **55 1.30** **0.99 36.497** **117 13.12** **0.131 12.0** **7.2 30.21** **28.61 25.62** **121 0.84** **51.3 1,973,459** **2,920,469 0.03** **4.23E-05 9.01E-05** **0.72 Average** **ppm 0.05** **Average gr/dscf** **7.71E-05 Average** **ib/mmBtu 1.64E-04** **Average lb/hr** **1.31 TABLE** 

### ACID**MIST SAMPLING** **SUMMARY EPA** **Method 8A** 

### Client:**Salt River** **Proj ect** **Plant: Navajo** **Unit Location:** **Stack Run** **Number: Date:** **Load (MW):** **Run Time:** **Start End** **Pbar Barometric** **Pressure: TT** **Sampling Time:** **VM Meter** **Volume: TM** **Avg. Meter** **Temp (F):** **PM Avg.** **Delta (in.** **of H2O):** **Meter Calibration** **Factor: VMSTD** **Std. Gas** **Volume (SCF):** **Vic Volume** **Water Collected:** **%M Percent** **Moisture: Bws** **Mole Fraction,** **Dry: %CO2** **Carbon Dioxide,** **Dry: %O2** **Oxygen, Dry:** **MD Dry** **Molecular Weight:** **MS Wet** **Molecular Weight:** **PS Static** **Press, (in.** **of Hg):** **TS Stack** **Temp. (F):** **CP Pitot** **Coefficient: VS** **Stack Gas** **Velocity (AFPS):** **QS Stack** **Gas Volume** **(DSCFM): QA** **Stack Gas** **Volume (ACFM): SO3** **ppm Emission** **Concentration: gr/dscf** **Emission Concentration:** **lb/mmbtu Emission** **Rate: lb/hr** **Emission Rate:** **11/17/09 725** **14:08 15:08** **25.51 60.0** **42.481 54** **1.30 0.99** **36.939 125** **13.75 0.137** **11.9 7.4** **30.20 28.52** **25.63 121** **0.84 50.3** **1,921,794 2,862,082** **0.01 8.77E-06** **1.90E-05 0.14** **11/17/09 723** **15:37 16:37** **25.51 60.0** **43.090 56** **1.30 0.99** **37.366 120** **13.14 0.131** **11.8 7.4** **30.18 28.58** **25.63 120** **0.84 50.8** **1,958,286 2,893,505** **0.01 7.43E-06** **1.61E-05 0.12** **11/17/09 718** **16:57 17:57** **25.51 60.0** **43.046 53** **1.30 0.99** **37.552 124** **13.46 0.135** **11.9 7.3** **30.20 28.55** **25.63 120** **0.84 50.5** **1,937,727 2,871,881** **0.01 7.40E-06** **1.59E-05 0.12** **Average ppm** **0.01 Average** **gr/dscf 8.10E-06** **Average lb/mmBtu** **1.75E-05 Average** **lb/hr 0.13** 

### 4-°**Description of** **Comhustion Units** 

## Navajo**Generating Station** **(NGS) is** **located on** **the Navajo** **Reservation, miles** **east of** **Page, Arizona,** **off U.S. Highway** **98. NGS** **has three** **750 MW** **(net) coal** **fired units** **with hot** **side electrostatic** **precipitators and** **wet limestone** **scrubbers. 5.0** **Sampling Program** **Procedures**

### The**following test** **methods were** **utilized during** **the test** **program:**

### EPA**Method Sample** **and Velocity** **Traverse for** **Stationary Sources** 

## EPA**Method Determination** **of Stack** **Gas Velocity** **and Volumetric** **Flow Rate** 

## EPA**Method 3A** **Gas Analysis** **for CO2,** **O2, Excess** **Air and** **Dry Molecular** **Weight (Instrumental** **Analyzer Method)** 

### EPA**Method Determination** **of Moisture** **Content in** **Stack Gas** 

## NCASI**Method 8A** **Determination of** **Sulfuric Acid** **Vapor or** **Mist and** **Sulfur Dioxide** **Emissions from** **Stationary Sources** **from Kraft** **Recovery Furnaces** 

## The**sampling was** **conducted in** **vertical section** **at the** **50(T level** **of each** **775^ stack** **The Hastelloy** **lined, 34.75^** **diameter stacks** **are enclosed** **in concrete** **shell with** **an 8:** **annular space.** **There are** **four (4),** **six inch** **test ports** **orientated 90** **degrees apart** **in the** **same horizontal** **plane. Test** **runs were** **conducted in** **triplicate for** **all parameters** **with**

## each**bemg minimum** **of 60 minutes** **in duration.** **The sampling** **procedures quality** **assurance, analysis** **and calculations** **utilized for** **the program** **were performed** **in**

### accordance**with the** **test protocol** **submitted and** **approved and** **the Code** **of Federal** **Regulations, Title** **40, Part** **60, Appendix** **A.**

## The**flow traverses** **were performed** **at three** **(3) traverse** **points for** **each port,** **12 total** **pomts. The** **acid mist** **sampling was** **performed single** **point for** **90 minutes.** **5.1 Sulfuric** **Acid Mist** **NCASI Method** **8A**

### Acid**Mist emissions** **were determined** **in accordance** **with EPA** **Method 8A** **procedures gas** **sample was** **extracted at** **constant flow** **rate from** **the flue** **gas and** **the sulfuric** **acid**

### mist,**including SO3>** **was separated** **and measured** **by barium-thorin** **titration. The** **sulfuric acid** **mist fraction** **of the** **train was** **the only** **portion analyzed.** **The probe** **and filter** **were maintained** **at 500** **°F. The** **condenser coil** **was maintained** **between 167** **and 185** **°F. The** **sampling train** **consists of** **the following** **equipment connected** **in series:** **Quartz nozzle** **and heated** **quartz lined** **probe Heated** **quartz filter** **holder with** **quartz filter** 

### modified**Grahm condenser** **with Type** **glass frit** **and 200** **cm of** **5-mm ID** **glass**

### Greenburg-Smith**impinger containing** **100 ml** **of 3%** **hydrogen peroxide** **solution modified** **Greenburg-Smith impinger** **containing 100** **ml of** **3% hydrogen** **peroxide Greenburg-Smith** **impinger containing** **100 ml** **of DIH2O** 

### modified**Greenburg-Smith impinger** **containing 250g** **of silica** **gel**

## QThe**sample volume** **was measured** **by passing** **it through** **calibrated dry gas** **meter An** **S type** **pitot tube** **was attached** **to the** **probe to** **measure stack** **gas velocity** **and to** **maintain**

## isokinetic**sampling. K-type** **thermocouple was** **attached to** **the probe** **to measure** **the gas** **temperature.**

## After**the run,** **the probe** **was disconnected** **from the** **sample train.** **The remaining** **portion was** **purged for** **15 minutes** **at the** **average sampling** **rate of** **the run.** 

## The**probe, filter** **holder and** **condenser were** **triple rinsed** **with deionized** **and the** **washings were** **retained for** **SO3/H2SO4 analysis.** **The peroxide** **and deionized** **H2O impingers'** **contents were** **recovered and** **the impingers** **and connecting** **glassware were** **rinsed with** 

## distilled**water and** **were retained,** **however SO2** **analysis was** **not performed** **Each sample** **was analyzed** **by barium** **thorin titration** **to determine** **SO3/H2SO4 concentrations.** **5.2 Stack** **Gas Velocity** **and Volumetric** **Flow Rate** 

## An**EPA Method** **stack gas** **velocity traverse** **was performed** **with each** **acid mist** **test run** **to determine** **the velocity** **and volumetric** **flow rate** **as specified** **in the** **test protocol** **The**

## data**was used** **for the** **calculation of** **acid mist** **test results** **in units** **of pound** **per hour** **(lb/hr). 5.3** **O2 and** **CO2 EPA** **Method**

## The**O2 and** **CO2 concentrations** **were determined** **simultaneously with** **each of the** **test runs.** **sample was** **continuously extracted** **and introduced** **into Telgan** **O2/CO2**

## analyzer**for determination** **of gas** **concentrations. The** **sample was** **extracted through** 

## heated**stainless steel** **probe, heated** **sample line** **and sample** **conditioner to** **dry the** **sample before** **it enters** **the analyzers.** **sample flow** **control system** **was used** **to control** **the flow** **mto the** **analyzers. The** **analyzers were** **calibrated prior** **to starting** **the testing** **with EPA** 

### Protocol**1, calibration** **gases. system** **bias check** **was performed** **before each** **run by** **introducing the** **zero and** **upscale gas** **at the** **back end** **of the** **sample probe.** **The system** 

## bias**check was** **repeated at** **the end** **of each** **test run** **to determine** **the analyzer** **zero and** **calibration drift.** 

## The**O2/CO2 analyzer** **spans were** **0-23% and** **0-18%, respectively.** **The O2** **calibration gases** **utilized were** **12.03% and** **22.72%. The** **CO2 calibration** **gases were** **9.97% and** 

### 17.73%.**The high** **calibration gas** **determined the** **span and** **was the** **basis for** **the mid** **gas, as** **well as** **bias and** **drift calculations.** 

### All**the sampling** **procedures, quality** **assurance, analysis** **and calculations** **utilized for** **the program** **were performed** **in accordance with** **the Code** **of Federal** **Regulations, Title** **40, Part** **60, Appendix** **A. 6.0** **Operating Conditions** **SRP personnel** **monitored operating** **conditions throughout** **the duration** **of the** **sampling program.** **The units** **were operating** **under normal** **conditions as** **follows: UNIT** **Gross MW** **564 813** **806 DATE** **11/16/09 11/17/09** **11/17/09 7.0** **Quality Assurance** **Procedures The** **quality assurance** **procedures utilized** **during the** **testing activities** **followed guidelines** **set forth** **by the** **previously mentioned** **methods and** **the EPA** **Qualitj' Assurance** **Handbook for** **Source Sampling.** **The specific** **procedures for** **this test** **program are** **listed below.** **7.1 Sampling** **Equipment The** **S-type pitot** **tubes were** **visually inspected** **and measured** **to meet** **the design** **specifications of** **EPA Method** **for 0.84** **pitot coefficient.** **Both legs** **of the** **pitot tube** **were leak** **checked before** **and after** **each sample** **run.**

### The**stack thermocouples** **were calibrated** **prior to** **the testing** **and post-test** **check was** **performed after** **the testing** **project. The** **manometer was** **leveled and** **zeroed before** **each sample** **run. The** **dry gas meter** **is fully** **calibrated annually** **using an** **EPA intermediate** **standard. Post** **-test dry** **gas meter** **checks were** **completed to** **verily the** **accuracy of** **the meter** **Yi.**

### Pre-test**and post-test** **leak checks** **were completed** **and were** **less than** **0.02 cfm** **at the** **highest sampling** **vacuum. 7.2** **Instrumental Methods** 

### Analyzer**calibrations, system** **bias check** **and drift** **checks were** **completed before** **and after** **each sample** **run utilizing** **EPA Protocol** **calibration gases.** 

### The**analyzer interference** **responses were** **determined in** **accordance with** **Section 8.2.7** **of Method** **7E and** **Section 16** **of Method** **6C. 7.3** **Data and** **Calculations manual** **calculation check** **is performed** **on single** **run for** **each parameter.** **8.0 Discussion** **8.1 Chain** **of Custody** **The samples** **were analyzed** **by the** **Barium Chloride** **lilration method** **on site in** **the plant** **laboratory. The** **field samples** **were then** **scaled and** **transported to** **the Catalyst** **facility in** **Knoxville, TN** **and shipped** **to the** **Maxxam Analytics** **laboratory in** **Burlington, Ontario,** **Canada under** **the supervision** **of Rick** **Derrera. The** **samples were** **labeled to** **identify the** **following: Client** **and source** **Date Type** **of Sample** **Run number** **Sample location** **Sample fraction** **8.2 Sampling** **Conditions and** **Concerns There** **were no** **interruptions or** **delays during** **the testing.**