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### DEPARTMENT-of ENVIRONMENTAL QUALITY DIVISION OF AIR QUALITY Michael O. Leavitt

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GovclMl' 

### 5 150 North 1950 Wcs: Reply to: State ofULah DialUlc R. Nielson, Ph.D. S.lt Lake City, UWl 84114 Division ofAir Quality**~Dit=or** " (801) 536-4000 P.O. Box 144820 RusseU A. Robens (801) 536-4099Fax Salt Lake City; UWl 84\14-4820 Dftelcr (801) 5364414T.D.D. DAQE-0063-94
February 3, 1994

.Gene Marshall Pacificorp 1407 West North Temple Salt Lake City, Utah 84140 Re: Approval Order For SIP Change Salt Lake County CDS A1NA Title V Major Dear Mr. Marshall: The attached document is an Approval Order for the above referenced project. Please direct.any technical questions you may have on 

### this project to Mr. Tim Blanchard. He may be reached at (801) 536-4057.

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......'RUssell A. Roberts, E:x.ecutlve Secretary

Utah Air Quality Board RAR:JTB:dn
cc: Salt Lake City/County Health Depanment EPA Region VIII, Mike Owens


# -
Vol1 1.2.e-2

# STATE 

# OF UTAH Department
..ofEnvironmental Quality Division ·ofAir 

# Quality APPROVAL ORDERFOR GADSBY UNITS 1, 2,·AND 3 SIP CHANGES Tim Blanchard, Engineer 

## APPROVAL ORDERNUMBER DAQE-0063-94 

### Date: February 3, 1994 

### Source 

# PACIFICORP

Russell A. Roberts Executive Secretary Voll 1.2.e-3 

### Utah Air Quality Board**DAQE~063** 

### Page 2 Abstract utah Power will upgrade the Gadsby Units No.1 and No.2 to bring them into compliance with Section IX.H.2.b.BBB for Utah Power and·Light in the State Implementation Plan (SIP) for Salt Lake County. The SIP requires that the Gadsby Plant be retrofited with new burners that meet Reasonable Available Control Technology (RAC1). The above-referenced projecthas been**evaluat~** 

### and found to be consistent with the requirements ofthe Utah Air Conservation Rules (UACR) and the Utah Air Conservation Act. A 30-day public comment periodwas held and all comments received were evaluated. Theconditions ofthis Approval Order (AO) reflect any changes to the proposed conditions which resulted from the evaluation of the comments received. This air quality AO authorizes theprojectwith the following conditions, and failure to comply with any ofthe conditions may constitute a violation ofthis onter. General Conditions: 1. This AO applies to the following company: Utah Power Division ofPacificorp Electric Operations 1407 West North Temple Salt Lake City, Utah 84140 Phone Number (801) 220-2235 FAX Number (801) 220-4307 The equipment listed below in this AO shall be operated at the following location: Gadsby Plant 1359 West North Temple Salt Lake City, 

## utah Universal Transverse Mercator (UTM) Coordinate System: 4,513.250 meters Northing, 421.650 meters Easting 2. Definitions ofterms, abbreviations, and references used inthis AO conform to

### thoseused in the UACR, Utah Administrative Codes (UAC), State Implementation Plan (SIP) and 

### Series 40 ofthe Code ofFederal Regulations (40 CFR). These definitions take precedence unless specifically defined otherwise herein
. 3.


### .Utah Power shall operate the Gadsby Power Station according to the information submitted in the Notice of Intem datejAugust 17, 1993, with addi[ionaJ information submitted November l, 1993. 4. Regardless of any inconsistency between conditions of this AO and Section IX.H.2.b.BBB ofthe SIP for Utah Power and Light, this AO shall take precedence as provided by R307-1-3.2.4, VA-C. Voll 1.2.e-4**DAQE~3** 

### Page 3 

### 5. A copy ofthis AO shall be posted on site. The AO shall be available to the employees who operate the air emission producing equipment. These employees shall receive instruction 

### as to their responsibilities in operating the equipment according to all ofthe relevant conditions listed below. 

### 6. The approved installations shall consist ofthe following equipment: A. 

### Gadsby I - 

### Replace the existing six burners with six new Todd Combustion, Inc. 1

### Low-NO" burners on the existing front fired boiler. B. 

### Gadsby 2 - 

### Replace the existing six burners with six newToddCombustion, Inc. 1

. 

### Low-NO. burners on the existing front fired boiler.
. Limitations and Tests Procedures 7. 

### Emissions to the atmosphere from L1e 

### indicated emission point shall not exceed the

.following rates and concentrations: A. Gadsby 1 Pollutant ppmdv (3% Oh drY) 

### NOx 

### 179.00 336 

### B. 

### Gadsby 2 

### Pollutant ppmdv (3% 0,. drY) 204.00 336 

## c. Gadsby 3
a. Winter November 1through February 28: Pollutant ppmdv (3% 

### 0" drvl NOx [42.00 

### 168

Voll 1.2.9-5

I _ Or equivalent with equivalency determined by the Executive Secretary

### DAQE-D063 Page 4 

### b. Summer March Ithrough October 

### 31: Pollutant ppmdv (3% 

### 0," drv) NOx 

### 203.00 168 8. Stack testing to show compliance with the emission limitations stated in the above condition shall be performed as specified below: A. Emission Point Pollutant**~Testing** Test Status Frequencv Gadsby 1 NO. 

### * ** Gadsby 2 NO. 

### * ** Gadsby 

### 3 NO. 

### * ** 

## B. Testing Status 

# ao be applied above 

# -" * Initial"compliancetestingis required. Theinitial test date shallbewithin 180 days after the start-up ofthe unit. 

## ** Test every two (2) years after the initial testing. 

### C. Notification The applicant shall provide a notification ofthe test date at least 45 days before the test. A pretest conference shall be held if directed by the**E~utive** Secretary. It shall be held at least 

### 30 days before the test between the owner/operator, the tester; and t1:le Executive Secretary. Theemissionpointshall be designed to conform to the requirements of

### 40 CFR 60, Appendix A, Method 1, and Occupational Safety and Health Administration (OSHA) or Mine Safety and Health Administration (MSHA) approvable access shall beprovided to the test location. D. Samole LOC3JioTI 40 

### CFR 60. Appendix A, Method 

### I E. Volumetric Flow Rate 40 

### CFR 60, Appendix A, Method 2 Vol1 1.2.e-6

### DAQE-0063 Page 5 F. Nitrogen Oxides (NO.1 40 CFR 60, Appendix A, Method 7, 7A, 78, 7C, 7D or 7E 

### G. Calculations To determine mass emission rates (lbslhr, etc.), the pollutant concentration as determined by the appropriate methods above, shall be multiplied by the volumetric flow rate and any necessary conversion factors detennined by the Executive Secretary to give the results in the specified units ofthe emission limitation. 

### H. Ex.isting Source Operation
a. Gadsby I For an ex.isting source/emission point, the production rate during all compliance testing shall be no less 

### than 90% ofthe input heat capacity 

### (653 MMBTU/HR).
. b. Gadsby 2 For an existing source/emission point, the production rate during all compliance testing shall be no less than 90% ofthe inputheat capacity (742 

### MMBTUIHR).
c. Gadsby 3 For a emission point, the production rate during compliance testing for the summer-time emissionlimitatioDS shallbepreformed atno less than 90% ofthe input heat capacity (1,040 MMBTUIHR), The production

.rate during compliance testing for the winter-time emission limitation shall be no 

### less .than 90% of the heat input rate correlating to 70% capacity factor used to calculate the winter-time emission rates (730 

### MMBTU/HR). 9. Visible emissions from the Gadsby stacks shall not exceed 10% opacity. Opacity observations ofemissions from stationary sources shall beconducted in accordance with 40 CFR 60, Appendix A, Method 9.

10.
.The owner/operator shall use only natural gas as a primary fuel and No.2 fuel oil or better as back-up fuel in the boilers. 

### If any other fuel is to be used an AO shall be required in accordance with R307-l-3.1, UAC. The No.2 fuel oil may be used only during periods of natural gas cunailmem and for maintenance frrings. Maintenance

­ firings shall not exceed. one-percent ofthe annual plant 8TU requirement. In addition, 

# -

­ maintenance firings shall be scheduledbetween April 1and November 30ofany calendar 

## > year. Records offuel oil use shall be kept which shows the date the fuel 

### oilwas fired, the duration in hours the fuel oil was 

### fired, the amount offuel oil consumed during each 0DAQE-0063 Page 6 curtailment, and the reason for each tiring. Records shall be made available to the Executive Secretary orhis representative upon request, and shall include a period oftwo years ending with the date ofthe request. 11. The sulfur content ofany fuel burned shall not exceed 0.45% by weight as determined by ASTM Method D-4294-89 or approved equivalent. The sulfurcontentshall be tested ifdirected by

# the Executive Secretary. Records & Miscellaneous 12. The Executive Secretary shall be notified in writing upon start-up of the installation as an initial compliance inspection is required. Eighteen months from the date ofthis AO the Executive Secretary shall be notified irx writing of the status of installation if installation is not completed. At that time the Executive Secretary shall require' documentation ofthecontinuous installationofthe operation and may revoke the AO in accordance with R307-1-3.1.5, UAC. If construction is complete and operation has commenced a notice is not required. 13. All records referenced in this AO which are required to be kept by the owner/operator shall be made available to the Executive Secretary or his representative upon request. Examples of records to be kept at this source shall include the following as applicable: A. Fuel

# oil consumption (Condition 10) B. Maintenance records (Condition 10) C. Upset, breakdown episodes (Condition 16) D. Emergency plan (Condition 17) 14. All installations and facilities authorized by this AO shall be adequately and properly maintained. All pollution comrol vendor recommended equipment shall be installed, maintained, and operated. Instructions from the vendor or established. maintenance practices that maximize pollution control shall beused. All necessary equipmentcontrol and operating devices such as pressure gauges, amp meters, volt meters, flOw.rate indicators, temperaturegauges, CEMs, etc., shall be installed and operated. properly and easily accessible to compliance inspectors. A copy of all manufacturers' operating instructionfor pollutioncontrol equipment and pollutionemittingequipment shall bekept on site. These instructions shall be available to all employees who operate the equipment, and shall be made available to compliance inspectors upon their request. 15. Theownerfoperator shall comply with R307-1-3.5, UAC. This rule addresses emission inventory reponing requirements. 16. The owner/operator shall comply with R307-1-4.7, UAC. This rule addresses unavoidable breakdown reponing reqUirements. The ownerfoperator shall calculatelestimate the excess emissions whenever a breakdo\vn occurs. The total of 

### co excess emissions shall be reponed to the Executive Secretary as directed for each 

### ,



# - calendar year. 

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- 17. Theownerfoperator shall submit to the Executive Secretarv an emergency Dian within 60 

### '0 

## > days of the date of this AG. The plan shall identify what control measures the owner/operator shall implement when an emergency episode is declared 

### by the ExecutiveDAQE-0063 Page 7 Director of the Depanment of Environmental Quality. Specific emisSion reduction

.measures shall be outlined for all three levels (Alert, Warning, Emergency). Thevalues for the various levels are listed in R307-1-5, UAC. Also see 40 CFR, Part

### 51, Subpart H (40 CFR 51.150 to 153) and appendix 

### L. The emergency plan shall be approved by
. the Executive Secretary. The Alert.Level actions.to be taken should be curtailment of all unnecessary activities causing air pollution. The other two levels ofactions should be a progressive curtailment ofproduction and activities causing pollution, to the point ofcomplete shutdown ofoperations. Any future modifications to the equipment approved by this order must also be approved in accordance with R307-1-3.1.1, UAC. This AO 

### in no way releases the owner or operator from altY liability for compliance with all other applicable federal, state, and local regulations includingthe UACR. Annual emissions for this source, the Gadsby power station, are currently calculated at the following values: Pollutant Tons/vr Paniculate 63.15 PM10 61.31 

### SO:2 67.73 NO. 2511.58 CO 458.61 VOC nonrnethane 16.55 These calculations are for the purposes of determining the applicability of Prevention of Significant Deterioration and nonattainment 

### area major source requirements ofthe UACR.
. 

### In accordance with the requirements ofTitle

### Vofthe 1990 Clean Air Act, the following pollutants may besubjectto anoperating permit fee. Both the fee rate and theclass ofpollutants are subjectto"t:hange by state, the federal agencies, or both. Pollutant Tons/vr PM10 61.31 SO. 67.73 NO. 2511.58 CO 458.61 VOC nonmethane 16.55 

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Vol \ ,

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# \g!J~1l A. Roberts, Executive Secretary

Division ofAir Quality