### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-1 

## Section VI. Specific Operating Conditions

A. Emission Unit #S2.001: UTM: North 4059.35 km, East 711.68 km (Zone 11)

System 01 Reid Gardner Unit #1 Steam Boiler, 100% Coal Fired with Natural Gas Igniters.

S2.001 Steam Boiler , Foster Wheeler, Model # 5757, Serial # 36-4109, Manufactured April,1965. 1,215 million Btu/hr, Maximum Heat Input, Nominal 110.0 MW Output.

1. NAC 445B.3405 (NAC 445B.316) Part 70 Program Air Pollution Equipment

Emissions from S2.001 shall be ducted to the following emissions c ontrol system with 100% capture and a maximum volume flow rate of 25,000,000 standard cubic feet per hour (SCFH): a. Mechanical fly ash collectors for the control of particulate matter. b. Soda ash wet scrubber (Flue Gas Desulfurization – FGD) for the control of sulfur dioxide and particulate matter.

c. Low NOx coal burners and over-fired air. d. Baghouse (complete installation and operation no later than July 1, 2010).

The volumetric flow rate may be determined by utilizing Method 2 – Determination of Stack Gas Velocity and Volumetric Flow Rate as referenced in 40 CFR Part 60, Appendix A.

2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits a. On and after the date of startup of S2.001

, the Permittee will not discharge or caus e the discharge into the atmosphere from the exhaust stack of S2.001 , the following pollutants in excess of the following specified limits: (1) NAC 445B.2203 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere will not exceed 0.20 pound per million Btu. (2) SIP 445.731 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere will not exceed 0.20 pound per million Btu. (3) Article 8.2.1.2 Federally Enforceable SIP - The discharge of sulfur to t he atmosphere will not exceed 729.0 pounds per hour. (4) NAC 445B.22047 State-Only Requirement - The discharge of sulfur to t he atmosphere will not exceed 729.0 pounds per hour. (5) NAC 445B.22057 State-Only Requirement - The allowable emission of sulfur from fossil-fired power generating Unit Number One of the Nevada Power Company ’s Reid Gardner Station, located in air Quality Control Region 13, Basin 218, California Wash, mu st not be greater than 0.275 pound per million Btu. (6) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge

of SO 2 to the atmosphere will not exceed 0.55 pound per million Btu (based on a 3-hour rolling average period). (6A) NAC 445B.305 ( Consent Decree Requirements ) - The discharge of SO 2 to the atmosphere will not exceed 0.40 pound per million Btu (based on a 10-day rolling average period). (7) SIP 445.721 Federally Enforceable SIP - The opacity from S2.001 will not equal or exceed 20% for a period or periods aggregating more than 3 minutes in any one hour. (8) NAC 445B.22017 State-Only Requirement - The opacity from S2.001 will not equal or exceed 20%. The opacity must be determined as set forth in 445B.22017.1(a) or (b). (9) NAC 445B.2202.6 State-Only Requirement - The opacity from S2.001 may exceed the level set in A.2.a.(8) of this section for the purposes of boiler lancing or soot blowing, not to exceed 180 minutes in any consecutive 24 hour period.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-2 

## Section VI. Specific Operating Conditions (continued)

A. Emission Unit #S2.001 (continued) 2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits (continued) b. Specific Acid Rain Requirements Parts 72 - 78 Acid Rain Program (1) The Permittee will not exceed the SO 2 and NO

x emission levels (acid rain allowances) for the indicated years as shown in the following table without holding t he required acid rain allowances in accordance with Section IV.B.2 of the Acid Rain pr ovisions and pursuant to 40 CFR 72.9:

Calendar Year 2001 2002 2003 2004 2005

S2.001 SO 2 Phase II Allowance 2,172 2,172 2,172 2,172 2,172

S2.001 NOx Emission Limit (lb/MMBtu) 0.46 0.46 0.46 0.46 0.46

(2) The Permittee will comply with the “Standard Requirements” provisions of the SO 2 acid rain permit application dated January 26, 1995 entitled “Phase II Permit Application” and all references contained therein, which is hereby incorporated by reference into this operating document (Attachment 1). [NAC 445B.305].

3. NAC 445B.3405 (NAC 445B.316) Part 70 Program Operating Parameters

a. S2.001 will combust sub-bituminous and/or bituminous coal; and/or natural gas for purpo ses of startup, shutdown

and/or flame stabilization only

. b. S2.001 may operate a total of 8,760 hours per calendar year. c. The maximum operating heat input rate for S2.001 while combusting sub-bituminous and/or bituminous coal and natural gas will not exceed 1,215 million Btu per any one-hour period.

4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting

a. Compliance/Performance Testing Within 180 days of the date of issuance of this operating permit, and once annually thereafter, The Permittee

will: (1) Conduct and record a Method 5 performanc e test for PM on the exhaust stack of S2.001 consisting of three

valid runs. The Method 5 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix A, Method 5, and include the back-half catch. (2) Conduct and record a Method 201A and 202 performance test for PM 10 on the exhaust stack of S2.001 consisting of three valid runs. The Method 201A and 202 emissions tests must be conducted in accordance with 40 CFR Part 51, Appendix M, Method 201A and 202. The Method 201A and 202 emissions tests may be replaced by a Method 5 performance test, including t he back-half catch. All particulate captured in the

Method 5 test will be considered PM 10 for compliance demonstration purposes. (3) Conduct and record a Method 6 or 6C performance test for SO 2 on the exhaust stack of S2.001 consisting of three valid runs. The Method 6 or 6C emissions test must be conducted in accordance with 40 CFR Part 60, Appendix A, Method 6 (PSD permit requirement VIII.B.2. issued January 3, 1980)

.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-3 

## Section VI. Specific Operating Conditions (continued)

A. Emission Unit #S2.001 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

a. Compliance/Performance Testing (continued) (4) The performance tests will be conducted at the maxi mum operating heat input rate limit established in A.3.c of this section for each pollutant required to be tested, unless otherwise approved pursuant to NAC

445B.252.3 & 4. The Permittee shall make available to the director such records as may be necessary to determine the conditions of the test of performance. Operations during periods of startup, shutdown and malfunction must not constitute repr esentative conditions of a test of performance unless otherwise specified in the applicable standard (NAC 445B.252.3). Should any anticipated major boile r overhaul(s) be scheduled to be performed, which coincide with the performance tests, the performance testing will be performed prior to the overhaul(s). If the performance testing can not be performed prior to a major boiler overhaul, the testing will be performed as soon as practicable following the overha ul(s), but not earlier than 60 days following the overhaul. (5) The Permittee shall give notice to the director 30 days before the test of performance to allow the director to have an observer present. A written testing procedure for the test of performance must be submitted to the director at least 30 days before the test of performance to allow the director to review the proposed testing procedures (NAC 445B.252.4). (6) During each performance test required in A.4.a.(1) through (3) of this section, record the quantity (in tons) of coal combusted during each test run, the heat content value of the coal combusted during each test run (in Btu/ton) and include these data in the test results submitted. The emissi ons results of the Method 6 or 6C performance test for SO 2 must be converted to emissions of sulfur (both lb/hr and lb/MMBtu). The emissions results of the Method 5 performance test for PM and method 5 or Method 201A and 202 performance test for

PM 10 must be reported in lb/MMBtu. (7) As a result of the most recent performance test per formed in A.4.a.(1) through (3) of this section, derive emission factors for each of the following:

(i). Pounds of PM per ton of coal (lbs-PM/tons-coal). (ii). Pounds of PM 10 per ton of coal (lbs-PM 10 /tons-coal).

These emissions factors will be based on the average of the 3 test runs.

(8) Within 60 days after completing the performanc e tests contained in A.4.a. of this section, the Permittee shall furnish the director a written report of the result s of the performance tests and the resultant emissions factors. All information and analytic al results of testing and sampling must be certified as to the truth and accuracy and as to their compliance with NAC 445B.001 to 445B.3485 (NAC 445B.252.8).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-4 

## Section VI. Specific Operating Conditions (continued)

A. Emission Unit #S2.001 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring

The Permittee , upon issuance of this operating permit will: (1) Install, calibrate, operate and maintain a coal mass measurement device to continuously measure the

amount of sub-bituminous and/or bitu minous coal (in tons) combusted in S2.001 . The coal mass

measurement device will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.001

. (2) Install, calibrate, operate and maintain a fuel flow me ter to continuously record the volume (in standard cubic feet) of natural gas combusted in S2.001 . The fuel flow meter will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.001 in accordance with the requirements prescribed in 40 CFR Part 75. (3) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record the quantity (in tons) of sub-bituminou s and/or bituminous coal as measured by the coal mass measurement device and the quantity of natural gas (in standard cubic feet) as measured by the fuel flow meter as required in A.4.b.(1) and (2) of this sectio n. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications. (4) Perform coal sampling of the coal prior to it enter ing the boiler. Sampling shall be conducted for moisture, ash, sulfur content, and gross calorific value. A coal analysis shall be performed weekly and the results of these analyses shall be retained for at least two years following the date of the measurement. All sample collection, sample preparation, and analyses perfo rmed or caused to be performed shall be conducted according to the most current ASTM methods ( PSD permit requirement VI II.E. issued January 3, 1980 ). (5) Perform coal sampling of the sub-bituminous and/or bituminous coal weekly according to section 12.5.3.2.2 in Method 19 in appendix A to Part 60 and use ASTM Method D2234-89, “Standard Test Methods for Collection of a Gross Sample of Coal.” Determine t he gross calorific value of the sub-bituminous and/or bituminous coal combusted by sampling at least once weekly, using ASTM D2013-86, “Standard Method of Preparing Coal Samples for Analysis”, ASTM D2015-91, “Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic Bomb Calorimete r”, ASTM 1989-92, “Standard test Method for Gross Calorific Value of Coal and Coke by Microprocessor Controlled Isoperibol Calorimeters”, or ASTM 3286-91a,

“Standard Test Method for Gross Calorific Value of Coal and Coke by the Isoperibol Bomb Calorimeter.” (6) Maintain on site, monthly analysis of calorific value of natural gas provided by natural gas supplier. (7) Substitute any missing fuel flow meter data in acco rdance with the requirements prescribed in 40 CFR Part 75, Appendix D, Section 2.4.2. (8) Install, calibrate, operate and maintain a SO 2 continuous emissions monitor sy stem (CEMS) (consisting of a

SO 2 pollutant concentration monitor and a flow monitoring system) to continuously measure the

concentration of SO 2 (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu)

from S2.001 . The CEMS will be installed at an appro priate location in th e exhaust stack of S2.001 to accurately and continuously measure the SO 2 concentration in S2.001 in accordance with the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2 ( PSD permit requirement VIII.D.2.a. issued January 3, 1980 ), 40 CFR Part 75, Part 75.11 and Appendix F. (9) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record

the SO 2 concentration (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu) on 1-hour average period and SO 2 mass emissions (in lb/MMBtu) on 3-hour rolling average period and 1-day average period, as measured by the CEMS requir ed in A.4.b.(8) of this se ction. The CDCS will be installed, calibrated, operated and maintained in accord ance with the manufacturer’s specifications and the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2 ( PSD permit requirement VIII.D.2.a. issued January 3, 1980 ), 40 CFR Part 75, Part 75.11 and Appendix F.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-5 

## Section VI. Specific Operating Conditions (continued)

A. Emission Unit #S2.001 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring (continued) (10) Install, calibrate, operate and maintain a continuous opacity monitoring system to continuously measure and record the opacity from S2.001 . The continuous opacity monitoring system will be installed at an appropriate location in the discharge stack of S2.001 to accurately and continuously measure the opacity of

S2.001 in accordance with the requirements prescr ibed in NAC 445B.256 to NAC 445B.267 and 40 CFR

Part 75.10. (11) Install, calibrate, operate and maintain a Contin uous Data Collection System (CDCS) to continuously record the opacity (in percent opacity) as measured by the continuous opacity moni toring system required in A.4.b.(10) of this section. The CDCS will be installed, calibrated, oper ated and maintained in accordance with the manufacturer’s specifications and the r equirements prescribed in NAC 445B.256 to NAC 445B.267,

40 CFR Part 75.10 and 40 CFR Part 75.14.

c. Recordkeeping

The Permittee will maintain a contemporaneous log containing at a minimum, the following recordkeeping for each day, or part of a day that S2.001 is operating: (1) The total hourly quantity of sub-bituminous and/or bitumi nous coal (in tons) and the volume of natural gas (in scf) combusted, for each hour of operation based on t he data recorded by the CDCS as required in A.4.b.(3)

of this section. (2) The total daily hours of operation for the corresponding date. (3) The heat contents of each fuel combusted for the corr esponding date, in Btu/ton (c oal) and Btu/scf (natural gas). The heat contents of each fuel will be based on t he gross calorific value determined in A.4.b.(5) & (6)

of this section. (4) The hourly heat inputs of the sub-bituminous and/ or bituminous coal and/or natural gas combusted, in MMBtu per hour. The hourly heat inputs will be calculated from the hourly fuel usage rates recorded in A.4.c.(1) of this section, and the heat contents of the fuel as record ed in A.4.c.(3) of this section.

Sample Calculation:

(tons-coal/hr)(Btu/ton-coal) = Btu/hr or MMBtu/hr (scf/hr)(Btu/scf) = Btu/hr or MMBtu/hr – natural gas

Sum: MMBtu/hr - Coal + MMBtu/hr – natural ga s = Hourly Heat Input in MMBtu/hr

(5) The hourly emission rate of PM and PM 10 each, in pounds per MMBtu (lbs/MMBtu). The hourly emission rates will be calculated from the hourly quantity of su b-bituminous and/or bituminous coal and/or natural gas determined in A.4.b.(1) and (2) of this section, and the em ission factor derived in A.4. a.(7) of this section for coal combustion and emission factor (7.6 lb/10 6 scf) as listed in AP-42, Table 1.4-2. for natural gas

combustion.

Sample Calculation:

(tons-coal/Btu)(lbs-PM/tons-coal) = lbs-PM/Btu or lbs-PM/MMBtu (scf natural gas/Btu)(7.6 lb/10 6 scf) = lbs-PM/Btu or lbs-PM/MMBtu – natural gas

Sum:

lbs-PM/MMBtu - Coal + lbs-PM/MMBtu – natural gas = Hourly Emission Rate in lbs-PM/MMBtu

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-6 

## Section VI. Specific Operating Conditions (continued)

A. Emission Unit #S2.001 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

c. Recordkeeping (continued) (6) The emission rates of sulfur and SO 2 each, in pounds per hour (lbs/hr) and pounds per million Btu (lbs/MMbtu) measured by the CEMS requi red in A.4.b.(8) of this section, for each averaging period described

below: (i). The sulfur emissions in pounds per hour (lbs /hr) for each 1-hour period. Sulfur emissions will be one-half

of the SO 2 emissions measured. (ii). The sulfur and SO 2 emissions in pounds per million Btu (lbs/MMBtu) for each 1-hour period. The conversion procedures established in 40 CFR Part 60. 45(e) & (f) will be used to convert the continuous monitoring data into units of the applicable standard (lb/MMBtu, 3-hour rolling average period and 1-day average period). Sulfur emissions will be one-half of the SO 2 emissions measured. (iii). The total SO 2 emissions for a 10-day rolling average period (based on preceding last 10 days) in

lbs/MMBtu. The SO 2 emissions in lbs/MMBtu for each 1-day average period recorded in Section VI.A.4.c.(6)(ii) will be used to calculate a 10-day rolling average period. (7) The measured opacity (in percent opacity) from the continuous opacity moni toring system required in A.4.b.(10) of this section. The opacity will be deter mined from reducing all data from the successive 10- second readings and recorded for the following: (i). Each 6-minute average as required in NAC 445B.2 2017.1(b) and as set forth in 40 CFR Part 60.13(h).

d. Reporting

The Permittee will: (1) Report all excess emissions as required in Sections III.B and III.C of this operating permit. (2) Report all deviations as required in Section V.C of the operating permit. (3) Submit semi-annual monitoring reports as re quired in Section V.C of this operating permit. (4) Certify compliance with all applicable requirements as required in Section V.E of this operating permit. (5) Report the results of the performance te sts required in A.4.a.(8) of this section. (6) Federally Enforceable PSD Permit Require ment (PSD Permit Issued 1/3/80) - Submit a written report of

excess emissions to the Administrator and the Director every calendar quarter. The report shall include: (i). The magnitude of excess emissions computed in accordance with 40 CFR 60.13(h), any conversion factor(s) used, and the date and time of commencement and completion of each time period of excess

emissions. (ii). Specific identification of each period of excess emissions that o ccurs during start-ups, shutdowns, and malfunctions. The nature and cause of any malfunction (if known) and the corrective action taken or preventative measures adopt ed shall also be reported. (iii). The date and time identifying each period during which the continuous monitoring system was inoperative except for zero and span checks and t he nature of the system repairs or adjustments. (iv). When no excess emissions have occurred or the continuous monitori ng system has not been inoperative, repaired, or adjusted, such information shall be stated in the report. (v). Excess emissions sh all be defined as any 3-hour rolling av erage period during which the average emissions of sulfur dioxide, as measured by the continuous monitoring system, exceeds the sulfur dioxide maximum limit in A.2.a.(6) of this section. (vi). The Permittee shall maintain a file of all measurements, including continuous monitoring system, monitoring device, and performance testing meas urements; all continuous monitoring system performance evaluations; all continuous monitoring system or monitoring device calibration checks; adjustments and maintenance performed on these system s or devices; and all other information required by 40 CFR part 60 recorded in a permanent form suitable for inspection. The file shall be retained for at least two years following the date of such meas urements, maintenance, reports, and records.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-7 

## Section VI. Specific Operating Conditions (continued)

A. Emission Unit #S2.001 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program

d. Reporting (continued) (7) Consent Decree Requirements

The SO 2 excess emissions (lb/MMBtu) shall also be defined as any 10-day rolling average period during which the average emissions of sulfur di oxide, as measured by the conti nuous monitoring system, exceeds the sulfur dioxide maximum limit in A.2.a.(6A) of this section. (8) Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirements apply only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipmen t, process equipment, or of a process to operate in

a normal manner which results an increase in emissi ons above any allowable emissions limit stated in Section VIII of the USEPA-issued PSD permit dated Jan uary 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing wi thin fifteen (15) days of any such failure. This notification shall include a description of the ma lfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated resultant emissions in excess of those a llowed under Section VIII of these
conditions, and the methods utilized to restore norm al operations. Compliance with this malfunction notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (NAC 445B.316) Part 70 Program Shielded Requirements

No specific shield requested.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-8 

## Section VI. Specific Operating Conditions (continued)

B. Emission Unit #S2.001 - Alternativ e Operating Scenario: Co-Firing Coal and No. 2 Distillate Fuel Oil. System 01B is completely DELETED (dated March 14, 2008 ).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-9 

## Section VI. Specific Operating Conditions (continued)

C. Emission Unit #S2.002

. Primary Operating Scenario: 100% Coal Fired. UTM: North 4059.32 km, East 711.68 km (Zone 11)

System 02A Reid Gardner Unit No. 2 Steam Boiler, Coal Fired.

S2.002 Steam Boiler , Foster Wheeler, Model # 2-79-2106, Serial # 08-6374, Manufactured July 1968. 1,215 million Btu/hr, Maximum Heat Input, Nominal 110.0 MW Output.

1. NAC 445B.3405 (NAC 445B.316) Part 70 Program Air Pollution Equipment

Emissions from S2.002 shall be ducted to the following emissions c ontrol system with 100% capture and a maximum volume flow rate of 25,000,000 standard cubic feet per hour (SCFH): a. Mechanical fly ash collectors for the control of particulate matter. b. Soda ash wet scrubber (Flue Gas Desulfurization – FGD) for the control of sulfur dioxide and particulate matter.

c. Low NOx coal burners and over-fired air.

The volumetric flow rate may be determined by utilizing Method 2 – Determination of Stack Gas Velocity and Volumetric Flow Rate as referenced in 40 CFR Part 60, Appendix A.

2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits a. On and after the date of startup of S2.002

, the Permittee will not discharge or caus e the discharge into the atmosphere from the exhaust stack of S2.002 , the following pollutants in excess of the following specified limits: (1) NAC 445B.2203 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere will not exceed 0.20 pound per million Btu. (2) SIP 445.731 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere will not

exceed 0.20 pound per million Btu. (3) Article 8.2.1.2 Federally Enforceable SIP - The discharge of sulfur to the atmosphere will not exceed 729.0 pounds per hour. (4) NAC 445B.22047 State-Only Requirement - The discharge of sulfur to t he atmosphere will not exceed 729.0 pounds per hour. (5) NAC 445B.22057 State-Only Requirement - The allowable emission of sulfur from fossil-fired power generating unit Number Two of the Nevada Power Company ’s Reid Gardner Station, located in air Quality Control Region 13, Basin 218, California Wash, mu st not be greater than 0.275 pound per million Btu. (6) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge

of SO 2 to the atmosphere will not exceed 0.55 pound per million Btu (based on a 3-hour rolling average period). (7) SIP 445.721 Federally Enforceable SIP - The opacity from S2.002 will not equal or exceed 20% for a period or periods aggregating more than 3 minutes in any one hour. (8) NAC 445B.22017 State-Only Requirement - The opacity from S2.002 will not equal or exceed 20%. The opacity must be determined as set forth in 445B.22017.1(a) or (b). (9) NAC 445B.2202.6 State-Only Requirement - The opacity from S2.002 may exceed the level set in C.2.a.(8) of this section for the purposes of boiler lancing or soot blowing, not to exceed 180 minutes in any consecutive 24 hour period.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-10 

## Section VI. Specific Operating Conditions (continued)

C. Emission Unit #S2.002 - Primary Operat ing Scenario: Coal Fired (continued) 2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits (continued) b. Specific Acid Rain Requirements Parts 72 - 78 Acid Rain Program (1) The Permittee will not exceed the SO 2 and NO

x emission levels (acid rain allowances) for the indicated years as shown in the following table without holding t he required acid rain allowances in accordance with Section IV.B.2 of the Acid Rain pr ovisions and pursuant to 40 CFR 72.9:

Calendar Year 2001 2002 2003 2004 2005

S2.002 SO 2 Phase II Allowance 2,201 2,201 2,201 2,201 2,201

S2.002 NOx Emission Limit (lb/MMBtu) 0.46 0.46 0.46 0.46 0.46

(2) The Permittee will comply with the “Standard Requirements” provisions of the SO 2 acid rain permit application dated January 26, 1995 entitled “Phase II Permit Application” and all references contained therein, which is hereby incorporated by reference into this operating document (Attachment 1). [NAC 445B.305].

3. NAC 445B.3405 (NAC 445B.316) Part 70 Program Operating Parameters

a. S2.002 will combust sub-bituminous and/or bituminous coal only when operating under this operating scenario.

b. S2.002 may operate a total of 8,760 hours per calendar year. c. The maximum operating heat input rate for S2.002 while combusting sub-bituminous and/or bituminous coal will

not exceed 1,215 million Btu per any one-hour period.

4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting

a. Compliance/Performance Testing Within 180 days of the date of issuance of this operating permit, and once annually thereafter, The Permittee

will:

(1) Conduct and record a Method 5 performanc e test for PM on the exhaust stack of S2.002 consisting of three

valid runs. The Method 5 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix A, Method 5, and include the back-half catch. (2) Conduct and record a Method 201A and 202 performance test for PM 10 on the exhaust stack of S2.002 consisting of three valid runs. The Method 201A and 202 emissions tests must be conducted in accordance with 40 CFR Part 51, Appendix M, Method 201A and 202. The Method 201A and 202 emissions tests may be replaced by a Method 5 performance test, including t he back-half catch. All particulate captured in the

Method 5 test will be considered PM 10 for compliance demonstration purposes. (3) Conduct and record a Method 6 or 6C performance test for SO 2 on the exhaust stack of S2.002 consisting of three valid runs. The Method 6 or 6C emissions test must be conducted in accordance with 40 CFR Part 60, Appendix A, Method 6 (PSD permit requirement VIII.B.2. issued January 3, 1980)

.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-11 

## Section VI. Specific Operating Conditions (continued)

C. Emission Unit #S2.002 - Primary Operating Scenario: 100% Coal Fired (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

a. Compliance/Performance Testing (continued) (4) The performance tests will be conducted at the maximu m operating heat input rate limit established in C.3.c of this section for each pollutant required to be tested, unless otherwise approved pursuant to NAC

445B.252.3 & 4. The Permittee shall make available to the director such records as may be necessary to determine the conditions of the test of performance. Operations during periods of startup, shutdown and malfunction must not constitute repr esentative conditions of a test of performance unless otherwise specified in the applicable standard (NAC 445B.252.3). Should any anticipated major boile r overhaul(s) be scheduled to be performed, which coincide with the performance tests, the performance testing will be performed prior to the overhaul(s). If the performance testing can not be performed prior to a major boiler overhaul, the testing will be performed as soon as practicable following the overha ul(s), but not earlier than 60 days following the overhaul. (5) The Permittee shall give notice to the director 30 days before the test of performance to allow the director to have an observer present. A written testing procedure for the test of performance must be submitted to the director at least 30 days before the test of performance to allow the director to review the proposed testing procedures (NAC 445B.252.4). (6) During each performance test required in C.4.a.(1) thr ough (3) of this section, reco rd the quantity (in tons) of coal combusted during each test run, the heat content value of the coal combusted during each test run (in Btu/ton) and include these data in the test results submitted. The emissi ons results of the Method 6 or 6C performance test for SO 2 must be converted to emissions of sulfur (both lb/hr and lb/MMBtu). The emissions results of the Method 5 performance test for PM and Method 5 or Method 201A and 202 performance test for

PM 10 must be reported in lb/MMBtu. (7) As a result of the most recent performance test per formed in C.4.a.(1) through (3 ) of this section, derive emission factors for each of the following:

(i). Pounds of PM per ton of coal (lbs-PM/tons-coal). (ii). Pounds of PM 10 per ton of coal (lbs-PM 10 /tons-coal).

These emissions factors will be based on the average of the 3 test runs.

(8) Within 60 days after completing the performance tests contained in C.4. a. of this section, the Permittee shall furnish the director a written report of the result s of the performance tests and the resultant emissions factors. All information and analytic al results of testing and sampling must be certified as to the truth and accuracy and as to their compliance with NAC 445B.001 to 445B.3485 (NAC 445B.252.8).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-12 

## Section VI. Specific Operating Conditions (continued)

C. Emission Unit #S2.002 - Primary Operating Scenario: 100% Coal Fired (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring

The Permittee , upon issuance of this operating permit will: (1) Install, calibrate, operate and maintain a coal mass measurement device to continuously measure the

amount of sub-bituminous and/or bitu minous coal (in tons) combusted in S2.002 . The coal mass

measurement device will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.002

. (2) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record the quantity (in tons) of sub-bituminou s and/or bituminous coal as measured by the coal mass measurement device required in C.4.b. (1) of this section. The CDCS will be installed, calibra ted, operated and maintained in accordance with the manufacturer’s specifications. (3) Perform coal sampling of the coal prior to it enter ing the boiler. Sampling shall be conducted for moisture, ash, sulfur content, and gross calorific value. A coal analysis shall be performed weekly and the results of these analyses shall be retained for at least two years following the date of the measurement. All sample collection, sample preparation, and analyses perfo rmed or caused to be performed shall be conducted according to the most current ASTM methods ( PSD permit requirement VI II.E. issued January 3, 1980 ). (4) Perform coal sampling of the sub-bituminous and/or bituminous coal weekly according to section 12.5.3.2.2 in Method 19 in appendix A to Part 60 and use ASTM Method D2234-89, “Standard Test Methods for Collection of a Gross Sample of Coal.” Determine t he gross calorific value of the sub-bituminous and/or bituminous coal combusted by sampling at least once weekly, using ASTM D2013-86, “Standard Method of Preparing Coal Samples for Analysis”, ASTM D2015-91, “Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic Bomb Calorimete r”, ASTM 1989-92, “Standard test Method for Gross Calorific Value of Coal and Coke by Microprocessor Controlled Isoperibol Calorimeters”, or ASTM 3286-91a,

“Standard Test Method for Gross Calorific Value of Coal and Coke by the Isoperibol Bomb Calorimeter.” (5) Install, calibrate, operate and maintain a SO 2 continuous emissions monitor sy stem (CEMS) (consisting of a

SO 2 pollutant concentration monitor and a flow monitoring system) to continuously measure the

concentration of SO 2 (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu)

from S2.002 . The CEMS will be installed at an appro priate location in th e exhaust stack of S2.002 to accurately and continuously measure the SO 2 concentration in S2.002 in accordance with the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2 ( PSD permit requirement VIII.D.2.a. issued January 3, 1980 ), 40 CFR Part 75, Part 75.11 and Appendix F. (6) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record

the SO 2 concentration (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu), as measured by the CEMS required in C.4.b.(5) of this sect ion. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications and the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2 ( PSD permit requirement VIII.D.2.a. issued January 3, 1980 ), 40 CFR Part 75, Part 75.11 and Appendix F. (7) Install, calibrate, operate and maintain a continuous opacity monitoring system to continuously measure and record the opacity from S2.002 . The continuous opacity monitoring system will be installed at an appropriate location in the discharge stack of S2.002 to accurately and continuously measure the opacity of S2.002 in accordance with the requirements prescribed in NAC 445B.256 to NAC 445B.267 and 40 CFR Part 75.10. (8) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record the opacity (in percent opacity) as measured by the continuous opaci ty monitoring system required in C.4.b.(7) of this section. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications and the requirement s prescribed in NAC 445B.256 to NAC 445B.267, 40

CFR Part 75.10 and 40 CFR Part 75.14.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-13 

## Section VI. Specific Operating Conditions (continued)

C. Emission Unit #S2.002 - Primary Operating Scenario: 100% Coal Fired (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program

c. Recordkeeping

The Permittee will maintain a contemporaneous log containing at a minimum, the following recordkeeping for each day, or part of a day that S2.002 is operating under this operating scenario: (1) The total hourly quantity of sub-bituminous and/or bi tuminous coal (in tons) combusted, for each hour of operation based on the data recorded by the CDCS as required in C.4.b.(2) of this section. (2) The total daily hours of operation for the corresponding date. (3) The heat content of the sub-bituminous and/or bitumi nous coal combusted for the corresponding date, in Btu per ton (Btu/ton). The heat content of the sub-bitumi nous and/or bituminous coal will be based on the gross calorific value determined in C.4.b.(4) of this section. (4) The hourly heat input of the sub-bituminous and/or bituminous coal combusted, in MMBtu per hour. The hourly heat inputs will be calculated from the hourly fuel usage rates recorded in C.4.c. (1) of this section, and

the heat content of the fuel as record ed in C.4.c.(3) of this section.

Sample Calculation:

(tons-coal/hr)(Btu/ton-coal) = Btu/hr or MMBtu/hr

(5) The hourly emission rate of PM and PM 10 each, in pounds per MMBtu (lbs/MMBtu). The hourly emission

rates will be calculated from the heat content of the fuel determined in C.4.b.(4) of this section, and the emission factor derived in C.4.a.(7) of this section.

Sample Calculation:

(tons-coal/Btu)(lbs-PM/tons-coal) = lbs-PM/Btu or lbs-PM/MMBtu

(6) The emission rates of sulfur and SO 2 each, in pounds per hour (lbs/hr) and pounds per million Btu (lbs/MMbtu) measured by the CEMS required in C.4.b.(6) of this se ction, for each averaging period

described below: (i). The sulfur emissions in pounds per hour (lbs /hr) for each 1-hour period. Sulfur emissions will be one-half

of the SO 2 emissions measured. (ii). The sulfur and SO 2 emissions in pounds per million Btu (l bs/MMBtu) for each 1-hour period. The conversion procedures established in 40 CFR Part 60. 45(e) & (f) will be used to convert the continuous monitoring data into units of the applicable st andard (lb/MMBtu, 3-hour average period). Sulfur

emissions will be one-half of the SO 2 emissions measured.

(7) The measured opacity (in percent opacity) from the continuous opacity moni toring system required in C.4.b.(8) of this section. The opacity will be determined from reducing all data from the successive 10- second readings and recorded for the following:

(i). Each 6-minute average as required in NAC 445B.2 2017.1(b) and as set forth in 40 CFR Part 60.13(h).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-14 

## Section VI. Specific Operating Conditions (continued)

C. Emission Unit #S2.002 - Primary Operating Scenario: 100% Coal Fired (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program

d. Reporting

The Permittee will: (1) Report all excess emissions as required in Sections III.B and III.C of this operating permit. (2) Report all deviations as required in Section V.C of the operating permit. (3) Submit semi-annual monitoring reports as re quired in Section V.C of this operating permit. (4) Certify compliance with all applicable requirements as required in Section V.E of this operating permit. (5) Report the results of the performance tests and opac ity observations required in C. 4.a.(8) of this section. (6) Federally Enforceable PSD Permit Require ment (PSD Permit Issued 1/3/80) - Submit a written report of

excess emissions to the Administrator and the Director every calendar quarter. The report shall include: (i). The magnitude of excess emissions computed in accordance with 40 CFR 60.13(h), any conversion factor(s) used, and the date and time of commencement and completion of each time period of excess

emissions. (ii). Specific identification of each period of excess emissions that o ccurs during start-ups, shutdowns, and malfunctions. The nature and cause of any malfunction (if known) and the corrective action taken or preventative measures adopt ed shall also be reported. (iii). The date and time identifying each period during which the continuous monitoring system was inoperative except for zero and span checks and t he nature of the system repairs or adjustments. (iv). When no excess emissions have occurred or the continuous monitori ng system has not been inoperative, repaired, or adjusted, such information shall be stated in the report. (v). Excess emissions shall be defined as any three-hour period during which the average emissions of sulfur dioxide, as measured by the cont inuous monitoring system, exceeds the sulfur dioxide maximum limit in C.2.a.(6) of this section. (vi). The Permittee shall maintain a file of all measurements, including continuous monitoring system, monitoring device, and performance testing meas urements; all continuous monitoring system performance evaluations; all continuous monitoring system or monitoring device calibration checks; adjustments and maintenance performed on these system s or devices; and all other information required by 40 CFR part 60 recorded in a permanent form suitable for inspection. The file shall be retained for at least two years following the date of such meas urements, maintenance, reports, and records. (7) Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirements apply only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a

normal manner which results an increase in emissions above any allowable emissions limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased d ue to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed un der Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (NAC 445B.316) Part 70 Program Shielded Requirements No specific shield requested.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-15 

## Section VI. Specific Operating Conditions (continued)

C1. Emission Unit #S2.002 : UTM: North 4059.32 km, East 711.68 km (Zone 11)

System 02 Reid Gardner Unit No. 2 Steam Boiler, 100% Coal Fired with Natural Gas Igniters.

S2.002 Steam Boiler , Foster Wheeler, Model # 2-79-2106, Serial # 08-6374, Manufactured July 1968. 1,215 million Btu/hr, Maximum Heat Input, Nominal 110.0 MW Output.

1. NAC 445B.3405 (NAC 445B.316) Part 70 Program Air Pollution Equipment

Emissions from S2.002 shall be ducted to the following emissions c ontrol system with 100% capture and a maximum volume flow rate of 25,000,000 standard cubic feet per hour (SCFH): a. Mechanical fly ash collectors for the control of particulate matter. b. Soda ash wet scrubber (Flue Gas Desulfurization – FGD) for the control of sulfur dioxide and particulate matter.

c. Low NOx coal burners and over-fired air. d. Natural gas igniters (complete installation and operation no later than July 1, 2009. e. Baghouse (complete installation and operation no later than July 1, 2010).

The volumetric flow rate may be determined by utilizing Method 2 – Determination of Stack Gas Velocity and Volumetric Flow Rate as referenced in 40 CFR Part 60, Appendix A.

2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits a. On and after the date of startup of S2.002

, the Permittee will not discharge or caus e the discharge into the atmosphere from the exhaust stack of S2.002 , the following pollutants in excess of the following specified limits: (1) NAC 445B.2203 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere will not exceed 0.20 pound per million Btu. (2) SIP 445.731 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere will not

exceed 0.20 pound per million Btu. (3) Article 8.2.1.2 Federally Enforceable SIP - The discharge of sulfur to the atmosphere will not exceed 729.0 pounds per hour. (4) NAC 445B.22047 State-Only Requirement - The discharge of sulfur to t he atmosphere will not exceed 729.0 pounds per hour. (5) NAC 445B.22057 State-Only Requirement - The allowable emission of sulfur from fossil-fired power generating unit Number Two of the Nevada Power Company ’s Reid Gardner Station, located in air Quality Control Region 13, Basin 218, California Wash, mu st not be greater than 0.275 pound per million Btu. (6) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge

of SO 2 to the atmosphere will not exceed 0.55 pound per million Btu (based on a 3-hour rolling average period). (6A) NAC 445B.305 ( Consent Decree Requirements ) - The discharge of SO 2 to the atmosphere will not exceed 0.40 pound per million Btu (based on a 10-day rolling average period). (7) SIP 445.721 Federally Enforceable SIP - The opacity from S2.002 will not equal or exceed 20% for a period or periods aggregating more than 3 minutes in any one hour. (8) NAC 445B.22017 State-Only Requirement - The opacity from S2.002 will not equal or exceed 20%. The opacity must be determined as set forth in 445B.22017.1(a) or (b). (9) NAC 445B.2202.6 State-Only Requirement - The opacity from S2.002 may exceed the level set in C1.2.a.(8) of this section for the purposes of boiler lancing or soot blowing, not to exceed 180 minutes in any consecutive 24 hour period.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-16 

## Section VI. Specific Operating Conditions (continued)

C1. Emission Unit #S2.002 (continued) 2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits (continued) b. Specific Acid Rain Requirements Parts 72 - 78 Acid Rain Program (1) The Permittee will not exceed the SO 2 and NO

x emission levels (acid rain allowances) for the indicated years as shown in the following table without holding t he required acid rain allowances in accordance with Section IV.B.2 of the Acid Rain pr ovisions and pursuant to 40 CFR 72.9:

Calendar Year 2001 2002 2003 2004 2005

S2.002 SO 2 Phase II Allowance 2,201 2,201 2,201 2,201 2,201

S2.002 NOx Emission Limit (lb/MMBtu) 0.46 0.46 0.46 0.46 0.46

(2) The Permittee will comply with the “Standard Requirements” provisions of the SO 2 acid rain permit application dated January 26, 1995 entitled “Phase II Permit Application” and all references contained therein, which is hereby incorporated by reference into this operating document (Attachment 1). [NAC 445B.305].

3. NAC 445B.3405 (NAC 445B.316) Part 70 Program Operating Parameters

a. S2.002 will combust sub-bituminous and/or bituminous coal; and/or natural gas for purpo ses of startup, shutdown

and/or flame stabilization only

. b. S2.002 may operate a total of 8,760 hours per calendar year. c. The maximum operating heat input rate for S2.002 while combusting sub-bituminous and/or bituminous coal and natural gas will not exceed 1,215 million Btu per any one-hour period.

4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting

a. Compliance/Performance Testing Within 180 days of the date of issuance of this operating permit, and once annually thereafter, The Permittee

will: (1) Conduct and record a Method 5 performanc e test for PM on the exhaust stack of S2.002 consisting of three

valid runs. The Method 5 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix A, Method 5, and include the back-half catch. (2) Conduct and record a Method 201A and 202 performance test for PM 10 on the exhaust stack of S2.002 consisting of three valid runs. The Method 201A and 202 emissions tests must be conducted in accordance with 40 CFR Part 51, Appendix M, Method 201A and 202. The Method 201A and 202 emissions tests may be replaced by a Method 5 performance test, including t he back-half catch. All particulate captured in the

Method 5 test will be considered PM 10 for compliance demonstration purposes. (3) Conduct and record a Method 6 or 6C performance test for SO 2 on the exhaust stack of S2.002 consisting of three valid runs. The Method 6 or 6C emissions test must be conducted in accordance with 40 CFR Part 60, Appendix A, Method 6 (PSD permit requirement VIII.B.2. issued January 3, 1980)

.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-17 

## Section VI. Specific Operating Conditions (continued)

C1. Emission Unit #S2.002 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

a. Compliance/Performance Testing (continued) (4) The performance tests will be conducted at the maximum operating heat input rate limit established in C1.3.c of this section for each pollutant required to be tested, unless otherwise approved pursuant to NAC

445B.252.3 & 4. The Permittee shall make available to the director such records as may be necessary to determine the conditions of the test of performance. Operations during periods of startup, shutdown and malfunction must not constitute repr esentative conditions of a test of performance unless otherwise specified in the applicable standard (NAC 445B.252.3). Should any anticipated major boile r overhaul(s) be scheduled to be performed, which coincide with the performance tests, the performance testing will be performed prior to the overhaul(s). If the performance testing can not be performed prior to a major boiler overhaul, the testing will be performed as soon as practicable following the overha ul(s), but not earlier than 60 days following the overhaul. (5) The Permittee shall give notice to the director 30 days before the test of performance to allow the director to have an observer present. A written testing procedure for the test of performance must be submitted to the director at least 30 days before the test of performance to allow the director to review the proposed testing procedures (NAC 445B.252.4). (6) During each performance test required in C1.4.a.(1) th rough (3) of this section, record the quantity (in tons) of coal combusted during each test run, the heat content value of the coal combusted during each test run (in Btu/ton) and include these data in the test results submitted. The emissi ons results of the Method 6 or 6C performance test for SO 2 must be converted to emissions of sulfur (both lb/hr and lb/MMBtu). The emissions results of the Method 5 performance test for PM and Method 5 or Method 201A and 202 performance test for

PM 10 must be reported in lb/MMBtu. (7) As a result of the most recent pe rformance test performed in C1.4.a.(1) through (3) of this section, derive emission factors for each of the following:

(i). Pounds of PM per ton of coal (lbs-PM/tons-coal). (ii). Pounds of PM 10 per ton of coal (lbs-PM 10 /tons-coal).

These emissions factors will be based on the average of the 3 test runs.

(8) Within 60 days after completing the performance tests contained in C1.4.a. of this section, the Permittee

shall furnish the director a written report of the results of the performance tests and the resultant emissions factors. All information and analytic al results of testing and sampling must be certified as to the truth and accuracy and as to their compliance with NAC 445B.001 to 445B.3485 (NAC 445B.252.8).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-18 

## Section VI. Specific Operating Conditions (continued)

C1. Emission Unit #S2.002 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring

The Permittee , upon issuance of this operating permit will: (1) Install, calibrate, operate and maintain a coal mass measurement device to continuously measure the

amount of sub-bituminous and/or bitu minous coal (in tons) combusted in S2.002 . The coal mass

measurement device will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.002

. (2) Install, calibrate, operate and maintain a fuel flow me ter to continuously record the volume (in standard cubic feet) of natural gas combusted in S2.002 . The fuel flow meter will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.002 in accordance with the requirements prescribed in 40 CFR Part 75. (3) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record the quantity (in tons) of sub-bituminou s and/or bituminous coal as measured by the coal mass measurement device and the quantity of natural gas (in standard cubic feet) as measured by the fuel flow meter as required in C1.4.b.(1) and (2) of this section. The CDCS wi ll be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications. (4) Perform coal sampling of the coal prior to it enter ing the boiler. Sampling shall be conducted for moisture, ash, sulfur content, and gross calorific value. A coal analysis shall be performed weekly and the results of these analyses shall be retained for at least two years following the date of the measurement. All sample collection, sample preparation, and analyses perfo rmed or caused to be performed shall be conducted according to the most current ASTM methods ( PSD permit requirement VI II.E. issued January 3, 1980 ). (5) Perform coal sampling of the sub-bituminous and/or bituminous coal weekly according to section 12.5.3.2.2 in Method 19 in appendix A to Part 60 and use ASTM Method D2234-89, “Standard Test Methods for Collection of a Gross Sample of Coal.” Determine t he gross calorific value of the sub-bituminous and/or bituminous coal combusted by sampling at least once weekly, using ASTM D2013-86, “Standard Method of Preparing Coal Samples for Analysis”, ASTM D2015-91, “Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic Bomb Calorimete r”, ASTM 1989-92, “Standard test Method for Gross Calorific Value of Coal and Coke by Microprocessor Controlled Isoperibol Calorimeters”, or ASTM 3286-91a,

“Standard Test Method for Gross Calorific Value of Coal and Coke by the Isoperibol Bomb Calorimeter.” (6) Maintain on site, monthly analysis of calorific value of natural gas provided by natural gas supplier. (7) Substitute any missing fuel flow meter data in acco rdance with the requirements prescribed in 40 CFR Part 75, Appendix D, Section 2.4.2. (8) Install, calibrate, operate and maintain a SO 2 continuous emissions monitor sy stem (CEMS) (consisting of a

SO 2 pollutant concentration monitor and a flow monitoring system) to continuously measure the

concentration of SO 2 (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu)

from S2.002 . The CEMS will be installed at an appro priate location in th e exhaust stack of S2.002 to accurately and continuously measure the SO 2 concentration in S2.002 in accordance with the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2 ( PSD permit requirement VIII.D.2.a. issued January 3, 1980 ), 40 CFR Part 75, Part 75.11 and Appendix F. (9) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record

the SO 2 concentration (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu) on 1-hour average period and SO 2 mass emissions (in lb/MMBtu) on 3-hour rolling average period and 1-day average period, as measured by the CEMS required in C1.4.b.(8) of this section. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications and the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2 ( PSD permit requirement VIII.D.2.a. issued January 3, 1980 ), 40 CFR Part 75, Part 75.11 and Appendix F.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-19 

## Section VI. Specific Operating Conditions (continued)

C1. Emission Unit #S2.002 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring (continued) (10) Install, calibrate, operate and maintain a continuous opa city monitoring system to continuously measure and record the opacity from S2.002 . The continuous opacity monitoring system will be installed at an appropriate location in the discharge stack of S2.002 to accurately and continuously measure the opacity of S2.002 in accordance with the requirements prescribed in NAC 445B.256 to NAC 445B.267 and 40 CFR Part 75.10. (11) Install, calibrate, operate and maintain a Continuous Da ta Collection System (CDCS) to continuously record the opacity (in percent opacity) as measured by the continuous opaci ty monitoring system required in C1.4.b.(10) of this section. The CDCS will be install ed, calibrated, operated and maintained in accordance with the manufacturer’s specifications and the r equirements prescribed in NAC 445B.256 to NAC 445B.267,

40 CFR Part 75.10 and 40 CFR Part 75.14.

c. Recordkeeping

The Permittee will maintain a contemporaneous log containing at a minimum, the following recordkeeping for each day, or part of a day that S2.002 is operating under this operating scenario: (1) The total hourly quantity of sub-bituminous and/or bitumi nous coal (in tons) and the volume of natural gas (in scf) combusted, for each hour of operation based on the data recorded by t he CDCS as required in C1.4.b.(3) of this section. (2) The total daily hours of operation for the corresponding date. (3) The heat contents of each fuel combusted for the corr esponding date, in Btu/ton (c oal) and Btu/scf (natural gas). The heat contents of each fuel will be based on t he gross calorific value determined in C1.4.b.(5) & (6)

of this section. (4) The hourly heat inputs of the sub-bituminous and/ or bituminous coal and/or natural gas combusted, in MMBtu per hour. The hourly heat inputs will be calculated from the hourly fuel usage rates recorded in C1.4.c.(1) of this section, and the heat contents of the fuel as recorded in C1.4.c.(3) of this section.

Sample Calculation:

(tons-coal/hr)(Btu/ton-coal) = Btu/hr or MMBtu/hr (scf/hr)(Btu/scf) = Btu/hr or MMBtu/hr – natural gas

Sum: MMBtu/hr - Coal + MMBtu/hr – natural ga s = Hourly Heat Input in MMBtu/hr

(5) The hourly emission rate of PM and PM 10 each, in pounds per MMBtu (lbs/MMBtu). The hourly emission rates will be calculated from the hourly quantity of su b-bituminous and/or bituminous coal and/or natural gas determined in C1.4.b.(1) and (2) of this section, and the emission factor derived in C1.4.a.(7) of this section for coal combustion and emission factor (7.6 lb/10 6 scf) as listed in AP-42, Table 1.4-2. for natural gas

combustion.

Sample Calculation:

(tons-coal/Btu)(lbs-PM/tons-coal) = lbs-PM/Btu or lbs-PM/MMBtu (scf natural gas/Btu)(7.6 lb/10 6 scf) = lbs-PM/Btu or lbs-PM/MMBtu – natural gas

Sum:

lbs-PM/MMBtu - Coal + lbs-PM/MMBtu – natural gas = Hourly Emission Rate in lbs-PM/MMBtu

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-20 

## Section VI. Specific Operating Conditions (continued)

C1. Emission Unit #S2.002 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

c. Recordkeeping (continued) (6) The emission rates of sulfur and SO 2 each, in pounds per hour (lbs/hr) and pounds per million Btu (lbs/MMbtu) measured by the CEMS required in C1.4.b .(8) of this section, for each averaging period

described below: (i). The sulfur emissions in pounds per hour (lbs /hr) for each 1-hour period. Sulfur emissions will be one-half

of the SO 2 emissions measured. (ii). The sulfur and SO 2 emissions in pounds per million Btu (l bs/MMBtu) for each 1-hour period. The conversion procedures established in 40 CFR Part 60. 45(e) & (f) will be used to convert the continuous monitoring data into units of the applicable standard (lb/MMBtu, 3-hour rolling average period and 1-day average period). Sulfur emissions will be one-half of the SO 2 emissions measured. (iii). The total SO 2 emissions for a 10-day rolling average period (based on preceding last 10 days) in

lbs/MMBtu. The SO 2 emissions in lbs/MMBtu for each 1-day average period recorded in Section VI.C1.4.c.(6)(ii) will be used to calc ulate a 10-day rolling average period. (7) The measured opacity (in percent opacity) from the continuous opacity moni toring system required in C1.4.b.(10) of this section. The opacity will be deter mined from reducing all data from the successive 10- second readings and recorded for the following: (i). Each 6-minute average as required in NAC 445B.2 2017.1(b) and as set forth in 40 CFR Part 60.13(h).

d. Reporting

The Permittee will: (1) Report all excess emissions as required in Sections III.B and III.C of this operating permit. (2) Report all deviations as required in Section V.C of the operating permit. (3) Submit semi-annual monitoring reports as re quired in Section V.C of this operating permit. (4) Certify compliance with all applicable requirements as required in Section V.E of this operating permit. (5) Report the results of the performance tests and opacit y observations required in C1.4.a.(8) of this section. (6) Federally Enforceable PSD Permit Require ment (PSD Permit Issued 1/3/80) - Submit a written report of

excess emissions to the Administrator and the Director every calendar quarter. The report shall include: (i). The magnitude of excess emissions computed in accordance with 40 CFR 60.13(h), any conversion factor(s) used, and the date and time of commencement and completion of each time period of excess

emissions. (ii). Specific identification of each period of excess emissions that o ccurs during start-ups, shutdowns, and malfunctions. The nature and cause of any malfunction (if known) and the corrective action taken or preventative measures adopt ed shall also be reported. (iii). The date and time identifying each period during which the continuous monitoring system was inoperative except for zero and span checks and t he nature of the system repairs or adjustments. (iv). When no excess emissions have occurred or the continuous monitori ng system has not been inoperative, repaired, or adjusted, such information shall be stated in the report. (v). Excess emissions sh all be defined as any 3-hour rolling av erage period during which the average emissions of sulfur dioxide, as measured by the continuous monitoring system, exceeds the sulfur dioxide maximum limit in C1.2.a.(6) of this section. (vi). The Permittee shall maintain a file of all measurements, including continuous monitoring system, monitoring device, and performance testing meas urements; all continuous monitoring system performance evaluations; all continuous monitoring system or monitoring device calibration checks; adjustments and maintenance performed on these systems or devices; and all other information required by 40 CFR part 60 recorded in a permanent form suitable for inspection. The file shall be retained for at least two years following the date of such meas urements, maintenance, reports, and records.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-21 

## Section VI. Specific Operating Conditions (continued)

C1. Emission Unit #S2.002 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

d. Reporting (continued) (7) Consent Decree Requirements

The SO 2 (lb/MMBtu) excess emissions shall also be defined as any 10-day rolling average period during which the average emissions of sulfur di oxide, as measured by the conti nuous monitoring system, exceeds the

sulfur dioxide maximum limit in Section VI.C1.2.a.(6A). (8) Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirements apply only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, proc ess equipment, or of a process to operate in a normal

manner which results an increase in emissions above any allo wable emissions limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased d ue to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed un der Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (NAC 445B.316) Part 70 Program Shielded Requirements No specific shield requested.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-22 

## Section VI. Specific Operating Conditions (continued)

D. Emission Unit #S2.002 - Alternativ e Operating Scenario: Co-Firing Coal and No. 2 Distillate Fuel Oil. UTM: North 4059.35 km, East 711.68 km (Zone 11)

System 02B Reid Gardner Unit No. 2 Steam Boiler, Coal Firing and No. 2 Distillate Fuel Oil.

S2.002 Steam Boiler , Foster Wheeler, Model # 2-79-2106, Serial # 08-6374, Manufactured July 1968. 1,215 million Btu/hr, Maximum Heat Input, Nominal 110.0 MW Output.

1. NAC 445B.3405 (NAC 445B.316) Part 70 Program Air Pollution Equipment

Emissions from S2.002 shall be ducted to the following emissions c ontrol system with 100% capture and a maximum volume flow rate of 25,000,000 standard cubic feet per hour (SCFH): a. Mechanical fly ash collectors for the control of particulate matter. b. Soda ash wet scrubber (Flue Gas Desulfurization – FGD) for the control of sulfur dioxide and particulate matter.

c. Low NOx coal burners and over-fired air.

The volumetric flow rate may be determined by utilizing Method 2 – Determination of Stack Gas Velocity and Volumetric Flow Rate as referenced in 40 CFR Part 60, Appendix A.

2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits a. On and after the date of startup of S2.002

, the Permittee will not discharge or caus e the discharge into the atmosphere from the exhaust stack of S2.002 , the following pollutants in exce ss of the following specified limits while operating under this alternative operating scenario: (1) NAC 445B.2203 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere will not exceed 0.20 pound per million Btu. (2) SIP 445.731 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere will not exceed 0.20 pound per million Btu. (3) Article 8.2.1.2 Federally Enforceable SIP - The discharge of sulfur to the atmosphere will not exceed 724.14 pounds per hour. (4) NAC 445B.22047 State-Only Requirement - The discharge of sulfur to the atmosphere will not exceed 724.14 pounds per hour. (5) NAC 445B.22057 State-Only Requirement - The allowable emission of sulfur from fossil-fired power generating Unit Number Two of the Nevada Power Company ’s Reid Gardner Station, located in air Quality Control Region 13, Basin 218, California Wash, mu st not be greater than 0.275 pound per million Btu. (6) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge

of SO 2 to the atmosphere will not exceed 0.55 pound per million Btu (based on a 3-hour rolling average period). (7) SIP 445.721 Federally Enforceable SIP - The opacity from S2.002 will not equal or exceed 20% for a period or periods aggregating more than 3 minutes in any one hour. (8) NAC 445B.22017 State-Only Requirement - The opacity from S2.002 will not equal or exceed 20%. The opacity must be determined as set forth in 445B.22017.1(a) or (b). (9) NAC 445B.2202.6 State-Only Requirement - The opacity from S2.002 may exceed the level set in D.2.a.(8) of this section for the purposes of boiler lancing or soot blowing, not to exceed 180 minutes in any consecutive 24 hour period.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-23 

## Section VI. Specific Operating Conditions (continued)

D. Emission Unit #S2.002 - Al ternative Operating Scenario: Co-Firing Co al and No. 2 Distillate Fuel Oil (continued) 2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits (continued) b. Specific Acid Rain Requirements Parts 72 - 78 Acid Rain Program (1) The Permittee will not exceed the SO 2 and NO

x emission levels (acid rain allowances) for the indicated years as shown in the following table without holding t he required acid rain allowances in accordance with Section IV.B.2 of the Acid Rain pr ovisions and pursuant to 40 CFR 72.9:

Calendar Year 2001 2002 2003 2004 2005

S2.002 SO 2 Phase II Allowance 2,201 2,201 2,201 2,201 2,201

S2.002 NOx Emission Limit (lb/MMBtu) 0.46 0.46 0.46 0.46 0.46

(2) The Permittee will comply with the “Standard Requirements” provisions of the SO 2 acid rain permit application dated January 26, 1995 entitled “Phase II Permit Application” and all references contained therein, which is hereby incorporated by reference into this operating document (Attachment 1). [NAC 445B.305].

3. NAC 445B.3405 (NAC 445B.316) Part 70 Program Operating Parameters a. While operating under this alternative operating scenario, S2.002 may co-fire sub-bituminous and/or bituminous coal and No. 2 distillate fuel oil for purposes of startup, shutdown and/or flame stabilization only.

b. S2.002 may operate a total of 8,760 hours per calendar year. c. The maximum operating heat input rate for S2.002 while co-firing sub-bituminous and/or bituminous coal and No.

2 distillate fuel oil will not exceed 1,215 million Btu per any one-hour period.

4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting

a. Compliance/Performance Testing For each calendar year The Permittee operates S2.002 more than 500 hours under this alternative operating scenario, The Permittee will perform the following te sting no later than 60 days a fter reaching the 500 hours of operation:

(1) Conduct and record a Method 5 performanc e test for PM on the exhaust stack of S2.002 consisting of three

valid runs. The Method 5 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix A, Method 5, and include the back-half catch. (2) Conduct and record a Method 201A and 202 performance test for PM 10 on the exhaust stack of S2.002 consisting of three valid runs. The Method 201A and 202 emissions tests must be conducted in accordance with 40 CFR Part 51, Appendix M, Method 201A and 202. The Method 201A and 202 emissions tests may be replaced by a Method 5 performance test, including t he back-half catch. All particulate captured in the

Method 5 test will be considered PM 10 for compliance demonstration purposes. (3) Conduct and record a Method 6 or 6C performance test for SO 2 on the exhaust stack of S2.002 consisting of three valid runs. The Method 6 or 6C emissions test must be conducted in accordance with 40 CFR Part 60, Appendix A, Method 6 (PSD permit requirement VIII.B.2. issued January 3, 1980)

.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-24 

## Section VI. Specific Operating Conditions (continued)

D. Emission Unit #S2.002 - Al ternative Operating Scenario: Co-Firing Co al and No. 2Distillate Fuel Oil (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

a. Compliance/Performance Testing (continued) (4) The performance tests will be conducted at the maximu m operating heat input rate limit established in D.3.c of this section for each pollutant required to be tested, unless otherwise approved pursuant to NAC

445B.252.3 & 4. The Permittee shall make available to the director such records as may be necessary to determine the conditions of the test of performance. Operations during periods of startup, shutdown and malfunction must not constitute repr esentative conditions of a test of performance unless otherwise specified in the applicable standard (NAC 445B.252.3). Should any anticipated major boile r overhaul(s) be scheduled to be performed, which coincide with the performance tests, the performance testing will be performed prior to the overhaul(s). If the performance testing can not be performed prior to a major boiler overhaul, the testing will be performed as soon as practicable following the overha ul(s), but not earlier than 60 days following the overhaul. (5) The Permittee shall give notice to the director 30 days before the test of performance to allow the director to have an observer present. A written testing procedure for the test of performance must be submitted to the director at least 30 days before the test of performance to allow the director to review the proposed testing procedures (NAC 445B.252.4). (6) During each performance test required in D.4.a.(1) thr ough (3) of this section, reco rd the quantity (in tons) of coal combusted, the No. 2 distillate fuel oil (in-pounds- mass), the heat content value of the coal (in Btu per ton) and No. 2 distillate fuel oil (in Btu per pound) combus ted during each test r un (in Btu per ton) and

include these data in the test results submitted. Th e oil sampling and analysis procedures contained in 40 CFR Part 75, Appendix D, Section 2.2.4 will be used to determine the No.2 distillate fuel oil parameters. The

emissions results of the Method 6 or 6C performance test for SO 2 must be converted to emissions of sulfur (both lb/hr and lb/MMBtu). The emissions results of t he Method 5 performance test for PM and Method 5 or Method 201A and 202 performance test for PM 10 must be reported in lb/MMBtu. (7) As a result of the most recent performance test per formed in D.4.a.(1) through (3 ) of this section, derive emission factors for each of the following:

(i). Pounds of PM per ton of coal (lbs-PM/tons-coal). (ii). Pounds of PM 10 per ton of coal (lbs-PM 10 /tons-coal). (iii). Pounds of PM per ton of No. 2 distilla te fuel oil (lbs-PM/lbm-No. 2 Distillate). (iv). Pounds of PM 10 per ton of No. 2 distillate fuel oil (lbs-PM 10 /lbm-No. 2 Distillate).

These emissions factors will be based on the average of the 3 test runs.

(8) Within 60 days after completing the performance tests contained in D.4. a. of this section, the Permittee shall furnish the director a written report of the result s of the performance tests and the resultant emissions factors. All information and analytic al results of testing and sampling must be certified as to the truth and accuracy and as to their compliance with NAC 445B.001 to 445B.3485 (NAC 445B.252.8).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-25 

## Section VI. Specific Operating Conditions (continued)

D. Emission Unit #S2.002 - Al ternative Operating Scenario: Co-Firing Co al and No. 2 Distillate Fuel Oil (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring

The Permittee , upon issuance of this operating permit will: (1) Install, calibrate, operate and maintain a coal mass measurement device to continuously measure the

amount of sub-bituminous and/or bitu minous coal (in tons) combusted in S2.002 . The coal mass

measurement device will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.002

. (2) Install, calibrate, operate and maintain a fuel flow meter to continuously record the mass amount (in poundsmass) of No. 2 distillate fuel oil combusted in S2.002 . The fuel flow meter will be installed at an appropriate location in the fuel delivery system to accurate ly and continuously measure the fuel combusted in S2.002 in accordance with the requirements prescribed in 40 CFR Part 75. (3) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record the quantity (in tons) of sub-bituminou s and/or bituminous coal as measured by the coal mass measurement device and the mass amount (in pounds-mass) of the No. 2 distillate fuel oil as measured by the fuel flow meter required in D.4.b.(1) & (2) of this section. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s sp ecifications and the requirements prescribed in 40 CFR

Part 75. (4) Perform coal sampling of the coal prior to it enter ing the boiler. Sampling shall be conducted for moisture, ash, sulfur content, and gross calorific value. A coal analysis shall be performed weekly and the results of these analyses shall be retained for at least two years following the date of the measurement. All sample collection, sample preparation, and analyses perfo rmed or caused to be performed shall be conducted according to the most current ASTM methods ( PSD permit requirement VI II.E. issued January 3, 1980 ). (5) Perform coal sampling of the sub-bituminous and/or bituminous coal weekly according to section 12.5.3.2.2 in Method 19 in appendix A to Part 60 and use ASTM Method D2234-89, “Standard Test Methods for Collection of a Gross Sample of Coal.” Determine t he gross calorific value of the sub-bituminous and/or bituminous coal combusted by sampling at least once weekly, using ASTM D2013-86, “Standard Method of Preparing Coal Samples for Analysis”, ASTM D2015-91, “Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic Bomb Calorimete r”, ASTM 1989-92, “Standard test Method for Gross Calorific Value of Coal and Coke by Microprocessor Controlled Isoperibol Calorimeters”, or ASTM 3286-91a,

“Standard Test Method for Gross Calorific Value of Coal and Coke by the Isoperibol Bomb Calorimeter.” (6) Using either the Flow Proportional or Daily Method de scribed in 40 CFR Part 75, Appendix D 2.2.2, 2.2.3, or 2.2.4 prepare a daily sample re presentative of the No. 2 dist illate fuel oil combusted in S2.002 for each day of operation while combusting that fuel. The sulfur cont ent of the daily fuel oil sample shall be determined in accordance with the requirements prescribed in 40 CF R Part 75, Appendix D. The fuel oil gross calorific value of this daily sample will be determined in accordance with ASTM D240- 87 (Re-approved 1991),

“Standard Test Method for Heat of Combustion of Li quid Hydrocarbon Fuels by Bomb Calorimeter” or ASTM D2382-88, “Standard Test Method for Heat or Combustion of Hydrocarbon Fuels by Bomb Calorimeter (High Precision Method) and the requirements prescribed in 40 CFR Part 75, Appendix F, Section 3.3.6.2.” Alternatively, an estimated maximum gross calorific va lue of 20,000 Btu per pound (Btu/lb) @ 7.4 pounds per gallon (lb/gal) for No. 2 distillate fuel oil may be used. (7) Substitute any missing fuel flow meter data in acco rdance with the requirements prescribed in 40 CFR Part 75, Appendix D, Section 2.4.2. Substitute any missing sulfur content data for the No. 2 distillate fuel oil in accordance with the requirements prescribed in 40 CFR Part 75, Appendix D, Section 2.4.1. Substitute any missing gross calorific value data for the No. 2 distillate fuel oil in accordance with the requirements prescribed in 40 CFR Part 75, Appendix D, Section 2.4.1.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-26 

## Section VI. Specific Operating Conditions (continued)

D. Emission Unit #S2.002 - Alternativ e Operating Scenario: Co-Firing Coal and No. 2 Distillate Fuel Oil (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program

b. Monitoring (continued) (8) Install, calibrate, operate and maintain a SO 2 continuous emissions monitor sy stem (CEMS) (consisting of a

SO 2 pollutant concentration monitor and a flow monitoring system) to continuously measure the

concentration of SO 2 (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu)

from S2.002 . The CEMS will be installed at an appro priate location in th e exhaust stack of S2.002 to accurately and continuously measure the SO 2 concentration in S2.002 in accordance with the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2 ( PSD permit requirement VIII.D.2.a. issued January 3, 1980 ), 40 CFR Part 75, Part 75.11 and Appendix F. (9) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record

the SO 2 concentration (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu), as measured by the CEMS required in D.4.b.(8) of this sect ion. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications and the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2 ( PSD permit requirement VIII.D.2.a. issued January 3, 1980 ), 40 CFR Part 75, Part 75.11 and Appendix F. (10) Install, calibrate, operate and maintain a continuous opa city monitoring system to continuously measure and record the opacity from S2.002 . The continuous opacity monitoring system will be installed at an appropriate location in the discharge stack of S2.002 to accurately and continuously measure the opacity of S2.002 in accordance with the requirements prescribed in NAC 445B.256 to NAC 445B.267 and 40 CFR Part 75.10. (11) Install, calibrate, operate and maintain a Continuous Da ta Collection System (CDCS) to continuously record the opacity (in percent opacity) as measured by the continuous opaci ty monitoring system required in D.4.b.(10) of this section. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications and the r equirements prescribed in NAC 445B.256 to NAC 445B.267,

40 CFR Part 75.10 and 40 CFR Part 75.14.

c. Recordkeeping

The Permittee will maintain a contemporaneous log containing at a minimum, the following recordkeeping for each day, or part of a day that S2.002 is operating under this alternative operating scenario: (1) The name of the operating scenario, the type(s) of fuel(s) combusted and the calendar date of any required monitoring, including the date and time of swit ching from one operating scenario to another. (2) The total hourly quantity of co-fired sub-bituminous and/ or bituminous coal (in tons) and the mass amount of No. 2 distillate fuel oil in pounds-mass (lbm) combust ed, for each hour of operation based on the data recorded by the CDCS as required in D.4.b.(3) of this section. (3) The total daily hours of operation for the corresponding date. (4) The heat content of each fuel combusted for the co rresponding date, in Btu/ton (coal) and Btu/pound (No. 2 distillate fuel oil). The heat content for each fuel will be based on the gross calorific value determined in D.4.b.(5) & (6) of this section. (5) The hourly heat input of the co-f ired sub-bituminous and/or bituminous coal and No. 2 distillate fuel oil combusted, in MMBtu per hour. The hourly heat inputs will be calculated from the hourly fuel usage rates recorded in D.4.c.(2) of this section, and the heat content of the fuel as reco rded in D.4.c.(4) of this section.

Sample Calculation:

(tons-coal/hr)(Btu/ton-coal) = Btu/hr or MMBtu/hr (lbm-No. 2 Distillate/hr)(Btu/lbs) = Bt u/hr or MMBtu/hr - No. 2 Distillate

Sum: MMBtu/hr - Coal + MMBtu/hr - No. 2 Distillate = Hourly Heat Input in MMBtu/hr

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-27 

## Section VI. Specific Operating Conditions (continued)

D. Emission Unit #S2.002 - Al ternative Operating Scenario: Co-Firing Co al and No. 2 Distillate Fuel Oil (continued)

c. Recordkeeping (continued) (6) The hourly emission rate of PM and PM 10 each, in pounds per MMBtu (lbs/MMBtu). The hourly emission rates will be calculated from the hourly quantity of co-fired sub- bituminous and/or bituminous coal and No. 2 distillate fuel oil determined in D.4.b.(3) of this section, and the emission factor deri ved in D.4.a.(7) of this section.

Sample Calculation:

(tons-coal/Btu)(lbs-PM/tons-coal) = lbs-PM/Btu or lbs-PM/MMBtu (lbm-No. 2 Distillate/Btu)(lbs-PM/lbm-No. 2 Distillate) = lbs-PM/Btu or lbs-PM/M MBtu – No. 2 Distillate

Sum:

lbs-PM/MMBtu - Coal + lbs-PM/MMBtu - No. 2 Dist illate = Hourly Emission Rate in lbs-PM/MMBtu

(7) The emission rates of sulfur and SO 2 each, in pounds per hour (lbs/hr) and pounds per million Btu (lbs/MMbtu) measured by the CEMS required in D. 4.b.(8) of this section, for each averaging period described below: (i). The sulfur emissions in pounds per hour (lbs/hr) for each 1-hour period. Sulfur em issions will be one-half of

the SO 2 emissions measured. (ii). The sulfur and SO 2 emissions in pounds pe r million Btu (lbs/MMBtu) for each 1-hour period. The conversion procedures established in 40 CFR Pa rt 60.45(e) & (f) will be used to conv ert the continuous monitoring data into units of the applicable standard (lb/MMBtu, 3-hour av erage period). Sulfur emissions will be one-half of

the SO 2 emissions measured.

(8) The measured opacity (in percent opacity) from the c ontinuous opacity monitoring system required in D.4.b.(10) of this section. The opacity will be determined from redu cing all data from the successive 10-second readings and recorded for the following: (i). Each 6-minute average as required in NAC 445B.2 2017.1(b) and as set forth in 40 CFR Part 60.13(h).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-28 

## Section VI. Specific Operating Conditions (continued)

D. Emission Unit #S2.002 - Al ternative Operating Scenario: Co-Firing Co al and No. 2 Distillate Fuel Oil (continued)

d. Reporting

The Permittee will: (1) Report all excess emissions as required in Sections III.B and III.C of this operating permit. (2) Report all deviations as required in Section V.C of the operating permit. (3) Submit semi-annual monitoring reports as re quired in Section V.C of this operating permit. (4) Certify compliance with all applicable requirements as required in Section V.E of this operating permit. (5) Report the results of the performance tests and opac ity observations required in D. 4.a.(8) of this section. (6) F ederally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - Submit a written report of excess

emissions to the Administrator and the Director ev ery calendar quarter. The report shall include: (i). The magnitude of excess emissions computed in accordance with 40 CFR 60.13(h), any conversion factor(s) used, and the date and time of commencement and comple tion of each time period of excess emissions. (ii). Specific identification of each period of excess em issions that occurs during start-ups, shutdowns, and malfunctions. The nature and cause of any malfunction (if known) and the corrective action taken or preventative measures adopt ed shall also be reported. (iii). The date and time identifying each period during wh ich the continuous monitori ng system was inoperative except for zero and span checks and the natur e of the system repairs or adjustments. (iv). When no excess emissions have occurred or the co ntinuous monitoring system has not been inoperative, repaired, or adjusted, such information shall be stated in the report. (v). Excess emissions shall be defin ed as any three-hour period during whic h the average emissions of sulfur dioxide, as measured by the contin uous monitoring system, exceeds the sulfur dioxide maximum limit in D.2.a.(6) of this section. (vi). The Permittee shall maintain a file of all measurements, in cluding continuous monitoring system, monitoring device, and performance testing measurements; all cont inuous monitoring system performance evaluations; all continuous monitoring system or monitoring de vice calibration checks; adjustments and maintenance performed on these systems or devices ; and all other information required by 40 CFR part 60 recorded in a permanent form suitable for inspection. The file shall be retained for at least two years following the date of such measurements, maintenance, reports, and records. (7) Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirements apply only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner

which results an increase in emission s above any allowable emis sions limit stated in Section VIII of the USEPAissued PSD permit dated January 3, 1980 of these conditi ons. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated resultant emissions in excess of

those allowed under Section VIII of t hese conditions, and the methods utiliz ed to restore normal operations. Compliance with this malfunction notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (NAC 445B.316) Part 70 Program Shielded Requirements No specific shield requested.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-29 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 : UTM: North 4059.28 km, East 711.68 km (Zone 11)

System 03 Reid Gardner Unit #3 Steam Boiler, 100% Coal Fired with Natural Gas Igniters.

S2.003 Steam Boiler , Foster Wheeler, Model # 279-1554, Serial # 08-1544, Manufactured July 1976. 1,237 million Btu/hr, Maximum Heat Input, Nominal 110.0 MW Output.

1. NAC 445B.3405 (NAC 445B.316) Part 70 Program Air Pollution Equipment

Emissions from S2.003 shall be ducted to the following emissions c ontrol system with 100% capture and a maximum volume flow rate of 28,000,000 standard cubic feet per hour (SCFH): a. Mechanical fly ash collectors for the control of particulate matter. b. Soda ash wet scrubber (Flue Gas Desulfurization – FGD) for the control of sulfur dioxide and particulate matter.

c. Low NOx coal burners and over-fired air. d. Baghouse (complete installation and operation no later than July 1, 2010).

The volumetric flow rate may be determined by utilizing Method 2 – Determination of Stack Gas Velocity and Volumetric Flow Rate as referenced in 40 CFR Part 60, Appendix A.

2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits a. On and after the date of startup of S2.003, the Permittee will not discharge or caus e the discharge into the atmosphere from the exhaust stack of S2.003 , the following pollutants in excess of the following specified limits: (1) NAC 445B.2203 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere will not exceed 0.20 pound per million Btu. (2) SIP 445.731 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere will not

exceed 0.20 pound per million Btu. (3) 40 CFR Part 60.42(a)(1) Federally Enforceable New Source Performance Standard Requirement - On and after the date on which the performance test required to be conducted by Sec. 60.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility any gases whic h contain particulate matter in excess of 43 nanograms per joule heat input (0.10 lb per million Btu). (4) Article 8.2.1.2 Federally Enforceable SIP - The discharge of sulfur to the atmosphere will not exceed 737.25 pounds per hour. (5) NAC 445B.22047 State-Only Requirement - The discharge of sulfur to the atmosphere will not exceed 737.25 pounds per hour. (6) NAC 445B.22057 State-Only Requirement - The allowable emission of sulfur from fossil-fired power generating Unit Number Three of the Nevada Power Compan y’s Reid Gardner Station, located in air Quality Control Region 13, Basin 218, California Wash, mu st not be greater than 0.275 pound per million Btu. (7) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge

of SO 2 to the atmosphere will not exceed 0.55 pound per million Btu (based on a 3-hour rolling average period). (7A)NAC 445B.305 ( Consent Decree Requirements ) - The discharge of SO 2 to the atmosphere will not exceed 0.40 pound per million Btu (based on a 10-day rolling average period).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-30 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 (continued) 2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

a. Emission Limits (continued) (8) 40 CFR Part 60.43(a)(2) Federally Enforceable New Source Performance Standard Requirement - On and after the date on which the performance test required to be conducted by Sec. 60.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility any gases which contain sulfur di oxide in excess of 520 nonograms per joule heat input (1.2 lb per million Btu).

(9) 40 CFR Part 60.44(a)(3) Federally Enforceable New Source Performance Standard Requirement - On and after the date on which the performance test required to be conducted by Sec. 60.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility any ga ses which contain nitrogen oxides, expressed as NO 2 in excess of 300 nanograms per joule heat input (0.70 lb per million Btu).

(10) SIP 445.721 Federally Enforceable SIP - The opacity from S2.003 will not equal or exceed 20% for a period or periods aggregating more than 3 minutes in any one hour.

(11) NAC 445B.22017 State-Only Requirement - The opacity from S2.003 will not equal or exceed 20%. The opacity must be determined as set fo rth in 445B.22017.1(a) or (b). S2.003 is allowed one 6-minute period per hour of not more than 27 percent opacit y as set forth in 40 CFR part 60.42(a)(2).

(12) NAC 445B.2202.6 State-Only Requirement - The opacity from S2.003 may exceed the level set in E.2.a.(11) of this section for the purposes of boiler lancing or soot blowing, not to exceed 180 minutes in any consecutive 24 hour period.

(13) 40 CFR Part 60.42(a)(2) Federally Enforceable New Source Performance Standard Requirement - On and after the date on which the performance test required to be conducted by Sec. 60.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility any gases which exhibit greater than 20 percent opacity exc ept for one six-minute period per hour of not more than 27 percent opacity.

b. Specific Acid Rain Requirements Parts 72 - 78 Acid Rain Program (1) The Permittee will not exceed the SO 2 and NO

x emission levels (acid rain allowances) for the indicated years as shown in the following table without holding t he required acid rain allowances in accordance with Section IV.B.2 of the Acid Rain pr ovisions and pursuant to 40 CFR 72.9:

Calendar Year 2001 2002 2003 2004 2005

S2.003 SO 2 Phase II Allowance 2,124 2,124 2,124 2,124 2,124

S2.003 NOx Emission Limit (lb/MMBtu) 0.46 0.46 0.46 0.46 0.46

(2) The Permittee will comply with the “Standard Requirements” provisions of the SO 2 acid rain permit application dated January 26, 1995 entitled “Phase II Permit Application” and all references contained therein, which is hereby incorporated by reference into this operating document (Attachment 1). [NAC 445B.305].

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-31 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 (continued) 3. NAC 445B.3405 (NAC 445B.316) Part 70 Program Operating Parameters

a. S2.003 will combust sub-bituminous and/or bituminous coal; and/or natural gas for purpo ses of startup, shutdown

and/or flame stabilization only

. b. S2.003 may operate a total of 8,760 hours per calendar year. c. The maximum operating heat input rate for S2.003 while combusting sub-bituminous and/or bituminous coal and natural gas will not exceed 1,237 million Btu per any one-hour period.

4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting

a. Compliance/Performance Testing Within 180 days of the date of issuance of this operating permit, and once annually thereafter, The Permittee

will: (1) Conduct and record a Method 5 performanc e test for PM on the exhaust stack of S2.003 consisting of three

valid runs. The Method 5 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix A, Method 5, and include the back-half catch. The sampling time and sample volume for each run shall be at least 60 minutes and 0.85 dscm (30 ds cf). The probe and filter holder heating systems in the sampling train shall be set to provide an average gas temperature of 160+/- 14 0 C (320+/- 25 0 F). The emission rate correction factor, integrated or grab sampling and analysis procedure of Method 3B shall be used to

determine the O 2 concentration (%O 2 ). The O 2 sample shall be obtained simultaneously with, and at the same traverse points as, the particulate sample. If the grab sampling procedure is used, the O 2 concentration for the run shall be the arithmetic mean of the sample O 2 concentrations at all traverse points. If the particulate run has more than 12 traverse points, the O 2 traverse points may be reduced to 12 provided

that Method 1 is used to locate the 12 O 2 traverse points (40 CFR Part 60.46(b)(2)). (2) Conduct and record a Method 201A and 202 performance test for PM 10 on the exhaust stack of S2.003 consisting of three valid runs. The Method 201A and 202 emissions tests must be conducted in accordance with 40 CFR Part 51, Appendix M, Method 201A and 202. The Method 201A and 202 emissions tests may be replaced by the Method 5 performance test required in E.4.a.(1) above. All particulate captured in the

Method 5 test will be considered PM 10 for compliance demonstration purposes. (3) Conduct and record a Method 6 performance test for SO 2 on the exhaust stack of S2.003 consisting of three

valid runs. The Method 6 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix
A, Method 6 (PSD permit requirement V III.B.2. issued January 3, 1980) . The sampling site shall be the same as that selected for the particulate sample requir ed in E.4.a.(1). The sampling location in the duct shall

be at the centroid of the cr oss section or at a point no closer to the walls than 1 m (3.28 ft). The sampling time and sample volume for each sample run shall be at least 20 minutes and 0.020 dscm (0.71 dscf). Two samples shall be taken during a 1-hour period, with each sample taken within a 30-minute interval. The emission rate correction factor, integrated sampling and analysis procedure of Method 3B shall be used to

determine the O 2 concentration (%O 2 ). The O 2 sample shall be taken simultaneously with, and at the same point as, the SO 2 sample. The SO 2 emission rate shall be computed for each pair of SO 2 and O 2 samples.

The SO 2 emission rate (E) for each run shall be the arithmetic mean of the results of the two pairs of samples (40 CFR Part 60.46(b)(4)). (4) Conduct and record a Method 7 performance test for NO

x on the exhaust stack of S2.003 consisting of three

valid runs. The Method 7 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix A, Method 7. The sampling site and location shall be the same as for the SO 2 sample required in E.4.a.(3). Each run shall consist of four grab samples, with each sample taken at about 15-minute intervals. For each

NO

x sample, the emission rate correction factor, grab sampling and analysis procedure of Method 3B shall

be used to determine the O 2 concentration (%O 2 ). The O 2 sample shall be taken simultaneously with, and at the same point as, the NO

x sample. The NO

x emission rate shall be computed for each pair of NO

x and O 2 samples. The NO

x emission rate (E) for each run shall be the arithm etic mean of the results of the four pairs of samples (40 CFR Part 60.46(b)(5)).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-32 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

a. Compliance/Performance Testing (continued) (5) During one of the three test runs required in E.4.a.(1 ) of this section, conduct and record a Method 9 visual opacity observation of the discha rge from the exhaust stack of S2.003. The Method 9 opacity test must be

conducted in accordance with the visible emissions evaluation procedur es contained in 40 CFR Part 60, Appendix A, Method 9. A certified visible emissions r eader must conduct the visible emissions evaluations for a period of at least 6 minutes. The opacity readi ngs must be averaged such that compliance with both a 6-minute average and 2, 3-mi nute averages are determined ( 40 CFR Part 60.46(b)(3)). (6) The performance tests will be conducted at the maxi mum operating heat input rate limit established in E.3.c of this section for each pollutant required to be tested, unless otherwise approved pursuant to NAC

445B.252.3 & 4. The Permittee shall make available to the director such records as may be necessary to determine the conditions of the test of performance. Operations during periods of startup, shutdown and malfunction must not constitute repr esentative conditions of a test of performance unless otherwise specified in the applicable standard (NAC 445B.252.3). Should any anticipated major boile r overhaul(s) be scheduled to be performed, which coincide with the performance tests, the performance testing will be performed prior to the overhaul(s). If the performance testing can not be performed prior to a major boiler overhaul, the testing will be performed as soon as practicable following the overha ul(s), but not earlier than 60 days following the overhaul. (7) The Permittee shall give notice to the director 30 days before the test of performance to allow the director to have an observer present. A written testing procedure for the test of performance must be submitted to the director at least 30 days before the test of performance to allow the director to review the proposed testing procedures (NAC 445B.252.4). The alternatives to the reference methods a nd procedures provided in 40 CFR Part 60.46(d) may be utilized to the extent that they are applicable to S2.003 , and must be identified in the testing procedures as alternative methods. (8) During each performance test required in E.4.a.(1) through (4) of this section, record the quantity (in tons) of coal combusted during each test run, the heat content value of the coal combusted during each test run (in Btu/ton) and include these data in the test results s ubmitted. The emissions results of the Method 6 and Method 7 performance tests for SO 2 and NO

x must be converted to emissi ons of sulfur (both lb/hr and lb/MMBtu) and emissions of nitrogen ox ides (lb/MMbtu). The emissions results of the Method 5 performance test for PM and Method 5 or Method 201A and 202 performance tests for PM 10 must be reported in lb/MMBtu. The emission rate (E) of particulate matter, SO 2 , and NO

x shall be computed for each run using the following formula (40 CFR Part 60.46(b)(1):

E = C F d (20.9)/(20.9-% O 2 ) E = emission rate of pollutant , ng/J (lb/million Btu)

C = concentration of pollutant, ng/dscm (lb/dscf)

% O 2 = oxygen concentration, percent dry basis

F d = factor as determined from Method 19.

(9) As a result of the most recent performance test per formed in E.4.a.(1) through (4) of this section, derive emission factors for each of the following:

(i). Pounds of PM per ton of coal (lbs-PM/tons-coal). (ii). Pounds of PM 10 per ton of coal (lbs-PM 10 /tons-coal).

These emissions factors will be based on the average of the 3 test runs.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-33 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

a. Compliance/Performance Testing (continued) (10) Within 60 days after completing the performance tests and opacity observations contained in E.4.a. of this
section, the Permittee shall furnish the director a written report of the results of the performance tests, the opacity observations and the resultant emissions factors. All information and analytical results of testing and sampling must be certified as to the truth and accura cy and as to their compliance with NAC 445B.001 to 445B.3485 (NAC 445B.252.8).

b. Monitoring

The Permittee , upon issuance of this operating permit will: (1) Install, calibrate, operate and maintain a coal mass measurement device to continuously measure the

amount of sub-bituminous and/or bitu minous coal (in tons) combusted in S2.003 . The coal mass

measurement device will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.003

. (2) Install, calibrate, operate and maintain a fuel flow me ter to continuously record the volume (in standard cubic feet) of natural gas combusted in S2.003 . The fuel flow meter will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.003 in accordance with the requirements prescribed in 40 CFR Part 75. (3) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record the quantity (in tons) of sub-bituminou s and/or bituminous coal as measured by the coal mass measurement device and the quantity of natural gas (in standard cubic feet) as measured by the fuel flow meter as required in E.4.b.(1) and (2) of this sectio n. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications. (4) Perform coal sampling of the coal prior to it enter ing the boiler. Sampling shall be conducted for moisture, ash, sulfur content, and gross calorific value. A coal analysis shall be performed weekly and the results of these analyses shall be retained for at least two years following the date of the measurement. All sample collection, sample preparation, and analyses perfo rmed or caused to be performed shall be conducted according to the most current ASTM methods ( PSD permit requirement VI II.E. issued January 3, 1980 ). (5) Perform coal sampling of the sub-bituminous and/or bituminous coal weekly according to section 12.5.3.2.2 in Method 19 in appendix A to Part 60 and use ASTM Method D2234-89, “Standard Test Methods for Collection of a Gross Sample of Coal.” Determine t he gross calorific value of the sub-bituminous and/or bituminous coal combusted by sampling at least once weekly, using ASTM D2013-86, “Standard Method of Preparing Coal Samples for Analysis”, ASTM D2015-91, “Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic Bomb Calorimete r”, ASTM 1989-92, “Standard test Method for Gross Calorific Value of Coal and Coke by Microprocessor Controlled Isoperibol Calorimeters”, or ASTM 3286-91a,

“Standard Test Method for Gross Calorific Value of Coal and Coke by the Isoperibol Bomb Calorimeter.” (6) Maintain on site, monthly analysis of calorific value of natural gas provided by natural gas supplier. (7) Substitute any missing fuel flow meter data in acco rdance with the requirements prescribed in 40 CFR Part 75, Appendix D, Section 2.4.2.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-34 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring (continued) (8) Install, calibrate, operate and maintain a SO 2 continuous emissions monitor sy stem (CEMS) (consisting of a

SO 2 pollutant concentration monitor and a flow monito ring device) to continuously measure the concentration

of SO 2 (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu) from S2.003

. The CEMS will be installed at an approp riate location in the exhaust stack of S2.003 to accurately and continuously measure the SO 2 concentration in S2.003 in accordance with the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Perfor mance Specification 2, 40 CFR Part 60.45(a), 40 CFR Part 60, Appendix B, Performance Specification 2, 40 CFR Part 75, Part 75.11 and Appendix F. For performance evaluations under 40 CFR Part 60.13(c) and calibration checks under 60.13(d), Method 6 and 3B shall be used for the performance evaluations of su lfur dioxide (40 CFR Part 60. 45(c)(1)). Sulfur dioxide shall be used for preparing calibration gas mixtures under Performance Specification 2 of Appendix B of 40 CFR Part 60 (40 CFR Part 60.45(c)(2) ). The span value for the CEMS shall be determined in accordance with the provisions contained in 40 CFR Part 60.45(c)(3) & (4). (9) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record

the SO 2 concentration (in ppm), volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu) on 1-hour average period and SO 2 mass emissions (in lb/MMBtu) on 3-hour rolling average period and 1-day average period, as measured by the CEMS requir ed in E.4.b.(8) of this se ction. The CDCS will be installed, calibrated, operated and maintained in accord ance with the manufacturer’s specifications and the requirements prescribed in 40 CFR Part 60.13 and 40 CFR Part 60, Appendix B, Performance Specification 2, 40 CFR Part 60.45(a), 40 CFR Part 60, Appendix B, Performance Specifications, 40 CFR Part 75, Part 75.11 and Appendix F. (10) Install, calibrate, operate and maintain a NO

x continuous emissions monitor sy stem (CEMS) (consisting of a

NO

x pollutant concentration monitor and a flow monitori ng device) to continuously measure the concentration

of NO

x (in ppm), volumetric gas flow (in scfh), and NO

x mass emissions (in lb/MMBtu) from S2.003 . The CEMS will be installed at an appropriat e location in the exhaust stack of S2.003 to accurately and continuously measure the NO

x concentration in S2.003 in accordance with the requirements prescribed in 40 CFR Part 60.45(a), 40 CFR Part 60, Appendix B, Perf ormance Specification 2, 40 CFR Part 75, Part 75.11 and Appendix F. For performance evaluations under 40 CFR Part 60.13(c) and calibration checks under 60.13(d), Method 7 and 3B shall be used for the performa nce evaluations of nitrogen oxides (40 CFR Part 60.45(c)(1)). Nitric oxide shall be used for prepa ring calibration gas mixtures under Performance Specification 2 of Appendix B of 40 CFR Part 60 (40 CFR Part 60.45(c)(2)). The span value for the CEMS shall be determined in accordance with the provisio ns contained in 40 CFR Part 60.45(c)(3) & (4). (11) Install, calibrate, operate and maintain a Continuous Da ta Collection System (CDCS) to continuously record

the NO

x concentration (in ppm), volumetric gas flow (in scfh), and NO

x mass emissions (in lb/MMBtu), as measured by the CEMS required in E. 4.b.(10) of this section. The CDCS will be installed, calibrated, operated and maintained in accordance with the m anufacturer’s specifications and the requirements prescribed in 40 CFR Part 60.45(a), 40 CFR Part 60, A ppendix B, Performance Specification 2, 40 CFR Part 75, Part 75.11 and Appendix F. (12) Install, calibrate, operate and maintain a continuous opa city monitoring system to continuously measure and record the opacity from S2.003 . The continuous opacity monitoring system will be installed at an appropriate location in the discharge stack of S2.003 to accurately and continuously measure the opacity of S2.003 in accordance with the requirements prescribed in NA C 445B.256 to NAC 445B.267, 40 CFR Part 60.45(a), 40 CFR Part 60, Appendix B, Performance Specification 1, and 40 CFR Part 75.10. For performance

evaluations under 40 CFR Part 60.13(c) and calibration checks under 60.13(d) , the span value for the continuous opacity monitoring system shall be 80 , 90, or 100 percent ( 40 CFR Part 60.45(c) and 60.45(c)(3)).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-35 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring (continued) (13) Install, calibrate, operate and maintain a Continuous Da ta Collection System (CDCS) to continuously record the opacity (in percent opacity) as measured by the continuous opaci ty monitoring system required in E.4.b.(12) of this section. The CDCS will be installed, calibrated, oper ated and maintained in accordance with the manufacturer’s specifications and the r equirements prescribed in NAC 445B.256 to NAC 445B.267, 40 CFR Part 60.45(a), 40 CFR Part 60, Appendix B, Perf ormance Specification 1, 40 CFR Part 75.10 and 40

CFR Part 75.14.

c. Recordkeeping

The Permittee will maintain a contemporaneous log containing at a minimum, the following recordkeeping for each day, or part of a day that S2.003 is operating under this operating scenario: (1) The total hourly quantity of sub-bituminous and/or bitumi nous coal (in tons) and the volume of natural gas (in scf) combusted, for each hour of operation based on t he data recorded by the CDCS as required in E.4.b.(3)

of this section. (2) The total daily hours of operation for the corresponding date. (3) The heat contents of each fuel combusted for the corr esponding date, in Btu/ton (c oal) and Btu/scf (natural gas). The heat contents of each fuel will be based on t he gross calorific value determined in E.4.b.(5) & (6)

of this section. (4) The hourly heat inputs of the sub-bituminous and/ or bituminous coal and/or natural gas combusted, in MMBtu per hour. The hourly heat inputs will be calculated from the hourly fuel usage rates recorded in E.4.c.(1) of this section, and the heat contents of the fuel as record ed in E.4.c.(3) of this section.

Sample Calculation:

(tons-coal/hr)(Btu/ton-coal) = Btu/hr or MMBtu/hr (scf/hr)(Btu/scf) = Btu/hr or MMBtu/hr – natural gas

Sum: MMBtu/hr - Coal + MMBtu/hr – natural ga s = Hourly Heat Input in MMBtu/hr

(5) The hourly emission rate of PM and PM 10 each, in pounds per MMBtu (lbs/MMBtu). The hourly emission rates will be calculated from the hourly quantity of su b-bituminous and/or bituminous coal and/or natural gas determined in E.4.b.(1) and (2) of this section, and the em ission factor derived in E.4. a.(9) of this section for coal combustion and emission factor (7.6 lb/10 6 scf) as listed in AP-42, Table 1.4-2. for natural gas

combustion.

Sample Calculation:

(tons-coal/Btu)(lbs-PM/tons-coal) = lbs-PM/Btu or lbs-PM/MMBtu (scf natural gas/Btu)(7.6 lb/10 6 scf) = lbs-PM/Btu or lbs-PM/MMBtu – natural gas

Sum:

lbs-PM/MMBtu - Coal + lbs-PM/MMBtu – natural gas = Hourly Emission Rate in lbs-PM/MMBtu

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-36 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

c. Recordkeeping (continued) (6) The emission rates of sulfur and SO 2 each, in pounds per hour (lbs/hr) and pounds per million Btu (lbs/MMbtu) measured by the CEMS requi red in E.4.b.(8) of this section, for each averaging period described

below: (i). The sulfur emissions in pounds per hour (lbs/hr) for each 1-hour period. Sulfur emissions will be one-half

of the SO 2 emissions measured. (ii). The sulfur and SO 2 emissions in pounds per million Btu (l bs/MMBtu) for each 1-hour period. The conversion procedures established in 40 CFR Part 60. 45(e) & (f) will be used to convert the continuous monitoring data into units of the applicable standard (lb/MMBtu, 3-hour rolling average period and 1-day average period). Sulfur emissions will be one-half of the SO 2 emissions measured. (iii). The total SO 2 emissions for a 10-day rolling average period (based on preceding last 10 days) in

lbs/MMBtu. The SO 2 emissions in lbs/MMBtu for each 1-day average period recorded in Section VI.E.4.c.(6)(ii) will be used to calculate a 10-day rolling average period. (7) The hourly emissions rate of NO

x in pounds per million Btu (lbs/MMBtu) for each 1-hour period measured by the CEMS required in E.4.b.(10) of this section. The conversion procedures established in 40 CFR Part 60.45(e) & (f) will be used to convert the continuous m onitoring data into units of the applicable standard (lb/MMBtu, 3-hour rolling average). (8) The measured opacity (in percent opacity) from the continuous opacity moni toring system required in E.4.b.(12) of this section. The opacity will be deter mined from reducing all data from the successive 10- second readings and recorded for the following: (i). Each 6-minute average, except for one 6-minut e period per hour of up to 27 percent opacity as established in NAC 445B.22017.1(b) and as set forth in 40 CFR Part 60.13(h). (ii). Each 6-minute average, except for one 6-minut e period per hour of up to 27 percent opacity as established in 40 CFR Part 60.42(a)(2).

d. Reporting

The Permittee will: (1) Report all excess emissions as required in Sections III.B and III.C of this operating permit. (2) Report all deviations as required in Section V.C of the operating permit. (3) Submit semi-annual monitoring reports as re quired in Section V.C of this operating permit. (4) Certify compliance with all applicable requirements as required in Section V.E of this operating permit. (5) Report the results of the performance tests and opacit y observations required in E.4.a.(10) of this section. (6) Federally Enforceable PSD Permit Require ment (PSD Permit Issued 1/3/80) - Submit a written report of

excess emissions to the Administrator and the Director every calendar quarter. The report shall include: (i). The magnitude of excess emissions computed in accordance with 40 CFR 60.13(h), any conversion factor(s) used, and the date and time of commencement and completion of each time period of excess

emissions. (ii). Specific identification of each period of excess emissions that o ccurs during start-ups, shutdowns, and malfunctions. The nature and cause of any malfunction (if known) and the corrective action taken or preventative measures adopt ed shall also be reported. (iii). The date and time identifying each period during which the continuous monitoring system was inoperative except for zero and span checks and t he nature of the system repairs or adjustments. (iv). When no excess emissions have occurred or the continuous monitori ng system has not been inoperative, repaired, or adjusted, such information shall be stated in the report. (v). Excess emissions sh all be defined as any 3-hour rolling av erage period during which the average emissions of sulfur dioxide, as measured by the continuous monitoring system, exceeds the sulfur dioxide maximum limit in E.2.a.(7) of this section.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-37 

## Section VI. Specific Operating Conditions (continued)

E. Emission Unit #S2.003 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting (continued)

d. Reporting (continued) (6) Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) (vi). The Permittee shall maintain a file of all measurements, including continuous monitoring system, monitoring device, and performance testing meas urements; all continuous monitoring system performance evaluations; all continuous monitoring system or monitoring device calibration checks; adjustments and maintenance performed on these system s or devices; and all other information required by 40 CFR part 60 recorded in a permanent form suitable for inspection. The file shall be retained for at least two years following the date of such meas urements, maintenance, reports, and records. (7) Consent Decree Requirements

The SO 2 (lb/MMBtu) excess emissions shall also be defined as any 10-day rolling average period during which the average emissions of sulfur di oxide, as measured by the conti nuous monitoring system, exceeds the

sulfur dioxide maximum limit in Section VI.E.2.a.(7A). (8) Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirements apply only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipmen t, process equipment, or of a process to operate in

a normal manner which results an increase in emissi ons above any allowable emissions limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malf unctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated resultant emissions in e xcess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal operations. Compliance with this malfunction notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (NAC 445B.316) Part 70 Program Shielded Requirements No specific shield requested.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-38 

## Section VI. Specific Operating Conditions (continued)

F. Emission Unit #S2.003 - Alternativ e Operating Scenario: Co-Firing Coal and No. 2 Distillate Fuel Oil. System 03B is completely DELETED (

dated March 14, 2008 )

.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-39 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004: UTM: North 4059.28 km, East 711.68 km (Zone 11)

System 04 Reid Gardner Unit #4 Steam Boiler, 100% Coal Fired with Natural Gas Igniters.

S2.004 Steam Boiler , Foster Wheeler, Model # Custom Built, Serial # 12A6361-1, Unit Manufactured July 1983. 2,956 million Btu/hr, Maximum Heat Input, Nominal 295.0 MW Output.

1. NAC 445B.3405 (NAC 445B.316) Part 70 Program Air Pollution Equipment

Emissions from S2.004 shall be ducted to the following emissions c ontrol system with 100% capture and a maximum volume flow rate of 60,000,000 standard cubic feet per hour (SCFH): a. Twin parallel baghouse filtration syst ems for the control of particulate matter Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80)

. b. Sodium carbonate wet spray scrubbing syst em for the control of sulfur dioxide Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80)

. c. Low NOx coal burners and over-fired air. d. Rotating Opposed Fired Air (ROFA) combustion system for the control of NOx emissions. ROFA system will be maintained and operated in accordance with st andard facility work practices.

The volumetric flow rate may be determined by utilizing Method 2 – Determination of Stack Gas Velocity and Volumetric Flow Rate as referenced in 40 CFR Part 60, Appendix A.

2. NAC 445B.3405 (NAC 445B.316) Part 70 Program

Emission Limits a. On and after the date of startup of S2.004

, the Permittee will not discharge or caus e the discharge into the atmosphere from the exhaust stack of S2.004 , the following pollutants in excess of the following specified limits: (1) NAC 445B.2203 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere will not exceed 0.16 pound per million Btu. (2) SIP 445.731 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere will not

exceed 0.16 pound per million Btu. (3) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge of PM (particulate matter) to the atmosphere will not exceed 0.03 pound per million Btu. (4) 40 CFR Part 60.42a(a) Federally Enforceable New Source Performance Standard Requirement - On and after the date on which the performance test required to be conducted by Sec. 60.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility any gases which contain particulat e matter in excess of 13 nanograms per joule (0.03 lb per million Btu) heat input derived from the combustion of solid fuel and 1 percent of the potential combustion concentration (99 percent reduction) when combusting solid fuel. (5) NAC 445B.22047 State-Only Requirement - The discharge of sulfur to the atmosphere will not exceed 1,773.6 pounds per hour. (6) Article 8.2.1.2 Federally Enforceable SIP - The discharge of sulfur to the atmosphere will not exceed 1,773.6 pounds per hour.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-40 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 2. NAC 445B.3405 (NAC 445B.316) Part 70 Program (continued)

a. Emission Limits (continued) (7) NAC 445B.2206 State-Only Requirement - The allowable emission of sulfur from fossil-fired power generating Unit Number Four of Nevada Power Company’s Reid Gardner Station, located in air Quality Control Region 13, Basin 218, California Wash, must not be greater than 0.145 pound per million Btu. The efficiency of the capture of sulfur must be maintained at a mini mum of 85 percent, based on a 30-day rolling

average. (8) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge

of SO 2 to the atmosphere will not exceed 0.29 pound per million Btu (based on a 30-day rolling average period). (9) 40 CFR Part 60.43a(a) Federally Enforceable New Source Performance Standard Requirement - On and after the date on which the initial performance test r equired to be conducted under Sec. 60.8 is completed, no owner or operator subject to the provisions of this subpart shall cause to be discharged into the atmosphere from any affected facility which combusts solid fuel, any gases which contain sulfur dioxide in excess of 520 nonograms per joule (1.20 lb per milli on Btu) heat input and 10 percent of the potential combustion concentration (90 percent reduction), or 30 percent of the potential combustion concentration (70 percent reduction), when emissions ar e less that 260 nonogra ms per joule (0.60 lb per million Btu) heat input. Compliance with the emission limitation and per cent reduction requirements under this section are both determined on a 30-day rolling average basis (40 CFR Part 60.43a(g)). (10) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge

of NO 2 to the atmosphere will not exceed 0.5 pound per million Btu while firing sub-bituminous coal. (11) NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) - The discharge

of NO 2 to the atmosphere will not exceed 0.6 pound per million Btu while firing bituminous coal. (12) 40 CFR Part 60.44a(a) Federally Enforceable New Source Performance Standard Requirement - On and after the date on which the initial performance test required to be conducted by Sec. 60.8 is completed, no owner or operator subject to the provisions of this su bpart shall cause to be discharged into the atmosphere from any affected facility any gases which contain nitrogen oxides (expressed as NO 2 ) in excess of the following emission limits, based on a 30-day rolling average:

(i). Solid fuels: Sub-bituminous Coal 210 ng/J (0.50 lb/million Btu)

Bituminous Coal 260 ng/J (0.60 lb/million Btu) (ii). NOx reduction requirement

Solid fuels 65 percent reduction of potential combustion concentration

(13) SIP 445.721 Federally Enforceable SIP - The opacity from S2.004 will not equal or exceed 20% for a period or periods aggregating more than 3 minutes in any one hour. (14) NAC 445B.22017 State-Only Requirement - The opacity from S2.004 will not equal or exceed 20%. The opacity must be determined as set fo rth in 445B.22017.1(a) or (b). S2.004 is allowed one 6-minute period per hour of not more than 27 percent opacity as set forth in 40 CFR part 60.42a(2).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-41 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 2. NAC 445B.3405 (NAC 445B.316) Part 70 Program (continued)

a. Emission Limits (continued) (15) NAC 445B.2202.6 State-Only Requirement - The opacity from S2.004 may exceed the level set in G.2.a.(14) of this section for the purposes of boiler lancing or soot blowing, not to exceed 180 minutes in any consecutive 24 hour period. (16) 40 CFR Part 60.42a(b) Federally Enforceable New Source Performance Standard Requirement - On and after the date the particulate matter performance test r equired to be conducted by Sec. 60.8 is completed, no owner or operator subject to the provisions of this su bpart shall cause to be discharged into the atmosphere from any affected facility any gases which exhibit grea ter than 20 percent opacity (6 -minute average), except for one 6-minute period per hour of not more than 27 percent opacity.

b. Specific Acid Rain Requirements Parts 72 - 78 Acid Rain Program (1) The Permittee will not exceed the SO 2 emission levels (acid rain allowances) for the indicated years as shown in the following table without holding the required acid rain allowances in accordance with Section IV.B.2 of the Acid Rain provisions and pursuant to 40 CFR 72.9:

Calendar Year 2005 2006 2007 2008 2009

S2.004 SO 2 Phase II Allowance 2,813 2,813 2,813 2,813 2,813

S2.004 NOx Emission Limit (lb/MMBtu) 0.50 0.50 0.50 0.46 0.46

(2) The Permittee will comply with the “Standard Re quirements” provisions of the SO 2 acid rain permit application dated January 26, 1995 entitled “Phase II Permit Application” and all references contained therein, which is hereby incorporated by reference in to this operating document (Attachment 1). [NAC 445B.305].

3. NAC 445B.3405 (NAC 445B.316) Part 70 Program Operating Parameters

a. S2.004 will combust sub-bituminous and/or bituminous coal; and/or natural gas for purpo ses of startup, shutdown

and/or flame stabilization only

. b. S2.004 may operate a total of 8,760 hours per calendar year. c. The maximum operating heat input rate for S2.004 while combusting sub-bituminous and/or bituminous coal and natural gas will not exceed 2,956 million Btu per any one-hour period.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-42 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program Compliance, Monitoring, Recordkeeping and Reporting

a. Compliance/Performance Testing Within 180 days of the date of issuance of this operating permit, and once annually thereafter, The Permittee

will: (1) Conduct and record a Method 5 performanc e test for PM on the exhaust stack of S2.004 consisting of three

valid runs. The Method 5 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix A, Method 5, and include the back-half catch. Complianc e with the particulate matter standards contained in G.2.a.(2) through (4) shall be determined by using the dry basis F factor (O 2 ) procedures in Method 19 to compute the emissions rate. Method 5B shall be used to determine the particulate matter concentration. The sampling time and sample volume for each run shall be at least 120 minutes and 1.70 dscm (60 dscf). The probe and filter holder heating system in the sampling train may be set to provide an average gas temperature of 160+/- 14 0 C (320+/- 25 0 F). For each particulate run, the emission rate correction factor, integrated or grab sampling and analysis procedures of Method 3B shall be used to determine the O 2 concentration. The O 2 sample shall be obtained simultaneously wi th, and at the same traverse points as, the particulate run. If the particulate run has more than 12 traverse points, the O 2 traverse points may be reduced to 12 provided that Method 1 is used to locate the 12 O 2 traverse points (40 CFR Part 60.48a(b)). (2) Conduct and record a Method 201A and 202 performance test for PM 10 on the exhaust stack of S2.004 consisting of three valid runs. The Method 201A and 202 emissions tests must be conducted in accordance with 40 CFR Part 51, Appendix M, Method 201A and 202. The Method 201A and 202 emissions tests may be replaced by the Method 5 performance test required in G.4.a.(1) above. All particulate captured in the

Method 5 test will be considered PM 10 for compliance demonstration purposes. (3) Conduct and record a Method 6 performance test for SO 2 on the exhaust stack of S2.004 consisting of three

valid runs. The Method 6 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix
A, Method 6. (4) Conduct and record a Method 7 performance test for NO

x on the exhaust stack of S2.004 consisting of three

valid runs. The Method 7 emissions test must be co nducted in accordance with 40 CFR Part 60, Appendix
A, Method 7. (5) During one of the three test runs required in G.4.a.(1 ) of this section, conduct and record a Method 9 visual opacity observation of the discha rge from the exhaust stack of S2.004. The Method 9 opacity test must be

conducted in accordance with the visible emissions evaluation procedur es contained in 40 CFR Part 60, Appendix A, Method 9. A certified visible emissions r eader must conduct the visible emissions evaluations for a period of at least 6 minutes. The opacity readi ngs must be averaged such that compliance with both a 6-minute average and 2, 3-mi nute averages are determined ( 40 CFR Part 60.48a(b)(3)). (6) The performance tests will be conducted at the maximu m operating heat input rate limit established in G.3.c of this section for each pollutant required to be tested, unless otherwise approved pursuant to NAC

445B.252.3 & 4. The Permittee shall make available to the director such records as may be necessary to determine the conditions of the test of performance. Operations during periods of startup, shutdown and malfunction must not constitute repr esentative conditions of a test of performance unless otherwise specified in the applicable standard (NAC 445B.252.3). Should any anticipated major boile r overhaul(s) be scheduled to be performed, which coincide with the performance tests, the performance testing will be performed prior to the overhaul(s). If the performance testing can not be performed prior to a major boiler overhaul, the testing will be performed as soon as practicable following the overha ul(s), but not earlier than 60 days following the overhaul.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-43 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program (continued) Compliance, Monitoring, Recordkeeping and Reporting (continued)

a. Compliance/Performance Testing (continued) (7) The Permittee shall give notice to the director 30 days before the test of performance to allow the director to have an observer present. A written testing procedure for the test of performance must be submitted to the director at least 30 days before the test of performance to allow the director to review the proposed testing procedures (NAC 445B.252.4). The alternative to t he reference methods and procedures provided in 40 CFR Part 60.48a(e) may be utilized to the extent that they are applicable to S2.004 , and must be identified in the testing procedures as alternative methods. (8) During each performance test required in G.4.a.(1) throug h (4) of this section, reco rd the quantity (in tons) of coal combusted during each test run, the heat content value of the coal combusted during each test run (in Btu/ton) and include these data in the test results s ubmitted. The emissions results of the Method 6 and Method 7 performance tests for SO 2 and NO

x must be converted to emissi ons of sulfur (both lb/hr and lb/MMBtu) and emissions of nitrogen oxides (lb/MMbtu) . The emissions results of the Method 5 or Method 201A and 202 performance test for PM 10 must be reported in lb/MMBtu. (9) As a result of the most recent performance test performed in G.4.a.(1) through (2) of this section, derive emission factors for each of the following:

(i). Pounds of PM per ton of coal (lbs-PM/tons-coal). (ii). Pounds of PM 10 per ton of coal (lbs-PM 10 /tons-coal).

These emissions factors will be based on the average of the 3 test runs.

(10) Within 60 days after completing the performance tests an d opacity observations contained in G.4.a. of this
section, the Permittee shall furnish the director a written report of the results of the performance tests, the opacity observations and the resultant emissions factors. All information and analytical results of testing and sampling must be certified as to the truth and accuracy and as to their compliance with NAC 445B.001 to 445B.3485 (NAC 445B.252.8).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-44 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program (continued) Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring

The Permittee , upon issuance of this operating permit will: (1) Install, calibrate, operate and maintain a coal mass measurement device to continuously measure the

amount of sub-bituminous and/or bitu minous coal (in tons) combusted in S2.004 . The coal mass

measurement device will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.004

. (2) Install, calibrate, operate and maintain a fuel flow me ter to continuously record the volume (in standard cubic feet) of natural gas combusted in S2.004 . The fuel flow meter will be installed at an appropriate location in the fuel delivery system to accurately and continuously measure the fuel combusted in S2.004 in accordance with the requirements prescribed in 40 CFR Part 75. (3) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record the quantity (in tons) of sub-bituminou s and/or bituminous coal as measured by the coal mass measurement device and the quantity of natural gas (in standard cubic feet) as measured by the fuel flow meter as required in G.4.b.(1) and (2) of this secti on. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications. (4) Perform coal sampling of the coal prior to it enter ing the boiler. Sampling shall be conducted for moisture, ash, sulfur content, and gross calorific value. A coal analysis shall be performed weekly and the results of these analyses shall be retained for at least two years following the date of the measurement. All sample collection, sample preparation, and analyses perfo rmed or caused to be performed shall be conducted according to the most current ASTM methods ( PSD permit requirement VI II.E. issued January 3, 1980 ). (5) Perform coal sampling of the sub-bituminous and/or bituminous coal weekly according to section 12.5.3.2.2 in Method 19 in appendix A to Part 60 and use ASTM Method D2234-89, “Standard Test Methods for Collection of a Gross Sample of Coal.” Determine t he gross calorific value of the sub-bituminous and/or bituminous coal combusted by sampling at least once weekly, using ASTM D2013-86, “Standard Method of Preparing Coal Samples for Analysis”, ASTM D2015-91, “Standard Test Method for Gross Calorific Value of Coal and Coke by the Adiabatic Bomb Calorimete r”, ASTM 1989-92, “Standard test Method for Gross Calorific Value of Coal and Coke by Microprocessor Controlled Isoperibol Calorimeters”, or ASTM 3286-91a,

“Standard Test Method for Gross Calorific Value of Coal and Coke by the Isoperibol Bomb Calorimeter.” (6) Maintain on site, monthly analysis of calorific value of natural gas provided by natural gas supplier. (7) Substitute any missing fuel flow meter data in acco rdance with the requirements prescribed in 40 CFR Part 75, Appendix D, Section 2.4.2. (8) Install, calibrate, operate and maintain a SO 2 continuous emissions monitor sy stem (CEMS) (consisting of a

SO 2 pollutant concentration monitor and a flow monito ring device) to continuously measure the concentration and percent reduction of SO 2 (in ppm), percent reduction, volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu) from S2.004 . The CEMS will be installed at an appropriate location in the

exhaust stack of S2.004 to accurately and continuously measure the SO 2 concentration in S2.004 in accordance with the requirements prescribed in 40 CFR Part 60.47a(b ), 40 CFR Part 60, Appendix B, Performance Specification 2, 40 CFR Part 75, Part 75.11 and Appendix F. SO 2 emissions are monitored at

both the inlet and outlet of the sulfur dioxide control device. The procedures established in 40 CFR Part 60.47a(i) shall be used to conduct moni toring system performance evaluations. (9) Install, calibrate, operate and maintain a Continuous Data Collection System (CDCS) to continuously record

the SO 2 concentration (in ppm), SO 2 percent reduction, volumetric gas flow (in scfh), and SO 2 mass emissions (in lb/hr and lb/MMBtu), as measured by the CEMS required in G.4.b.(8) of this section. The CDCS will be installed, ca librated, operated and maintained in accordance with the manufacturer’s specifications and the requirements prescribed in 40 CFR Part 60.47a, 40 CFR Part 60, Appendix B, Performance Specifications, 40 CFR Part 75, Part 75.11 and Appendix F.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-45 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program (continued) Compliance, Monitoring, Recordkeeping and Reporting (continued)

b. Monitoring (continued) (10) Install, calibrate, operate and maintain a NO

x continuous emissions monitor sy stem (CEMS) (consisting of a

NO

x pollutant concentration monitor and a flow monitori ng device) to continuously measure the concentration

of NO

x (in ppm), volumetric gas flow (in scfh), and NO

x emissions rate (in lb/MMBtu) from S2.004 . The CEMS will be installed at an appropriat e location in the exhaust stack of S2.004 to accurately and continuously measure the NO

x concentration in S2.004 in accordance with the requirements prescribed in 40 CFR Part 60.47a(c), 40 CFR Part 60, Appendix B, Performa nce Specification 2, 40 CF R Part 75, Part 75.11 and Appendix F. The NOx CEMS installed to meet the requirements of 40 CFR Part 75 may be used to meet the requirements of 40 CFR Part 60.47(c). The re quirements established in 60.49a continue to apply, except that the permittee shall also meet the requirements of 40 CFR Part 60.49a shall not include data substituted using the missing data procedures in sub part D of 40 CFR Part 75, nor shall the data have been bias adjusted according to the procedures of 40 CFR Part 75. The procedures established in 40 CFR Part 60.47a(i) shall be used to conduct moni toring system performance evaluations. (11) Install, calibrate, operate and maintain a Continuous Da ta Collection System (CDCS) to continuously record

the NO

x concentration (in ppm), volumetric gas flow (in scfh), and NO

x emissions rate (in lb/MMBtu), as measured by the CEMS required in G. 4.b.(10) of this section. The CDCS will be installed, calibrated, operated and maintained in accordance with the m anufacturer’s specifications and the requirements prescribed in 40 CFR Part 60, Appendix B, Performanc e Specification 2, 40 CFR Part 75, Part 75.11 and Appendix F. (12) Install, calibrate, operate and maintain a Continuous Da ta Collection System (CDCS) to continuously record the oxygen or carbon dioxide content of the flue gases at each location where sulfur dioxide or nitrogen oxides emissions are monitored (40 CFR Part 60.47a(d)). (13) Install, calibrate, operate and maintain a continuous opa city monitoring system to continuously measure and record the opacity from S2.004 . The continuous opacity monitoring system will be installed at an appropriate location in the discharge stack of S2.004 to accurately and continuously measure the opacity of S2.004 in accordance with the requirements prescribed in NAC 445B.256 to NAC 445B. 267, 40 CFR Part 60.47a(a), 40 CFR Part 60, Appendix B, Performance Specification 1, and 40 CFR Part 75.10. If opacity interference due to water droplets exists in the stack, the opac ity is monitored upstream of the interference. (14) Install, calibrate, operate and maintain a Continuous Da ta Collection System (CDCS) to continuously record the opacity (in percent opacity) as measured by the continuous opaci ty monitoring system required in G.4.b.(13) of this section. The CDCS will be installed, calibrated, operated and maintained in accordance with the manufacturer’s specifications and the r equirements prescribed in NAC 445B.256 to NAC 445B.267, 40 CFR Part 60.47a(a), 40 CFR Part 60, Appendix B, Pe rformance Specification 1, 40 CFR Part 75.10 and

40 CFR Part 75.14.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-46 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program (continued)

c. Recordkeeping

The Permittee will maintain a contemporaneous log containing at a minimum, the following recordkeeping for each day, or part of a day that S2.004 is operating under this operating scenario: (1) The total hourly quantity of sub-bituminous and/or bitumi nous coal (in tons) and the volume of natural gas (in scf) combusted, for each hour of operation based on t he data recorded by the CDCS as required in G.4.b.(3)

of this section. (2) The total daily hours of operation for the corresponding date. (3) The heat contents of each fuel combusted for the corr esponding date, in Btu/ton (c oal) and Btu/scf (natural gas). The heat contents for each fuel will be based on the gross calorific value determined in G.4.b.(5) & (6)

of this section. (4) The hourly heat inputs of the sub-bituminous and/ or bituminous coal and/or natural gas combusted, in MMBtu per hour. The hourly heat inputs will be calculated from the hourly fuel usage rates recorded in G.4.c.(1) of this section, and the heat contents of the fuel as record ed in G.4.c.(3) of this section.

Sample Calculation:

(tons-coal/hr)(Btu/ton-coal) = Btu/hr or MMBtu/hr (scf/hr)(Btu/scf) = Btu/hr or MMBtu/hr – natural gas

Sum: MMBtu/hr - Coal + MMBtu/hr – natural ga s = Hourly Heat Input in MMBtu/hr

(5) The hourly emission rate of PM and PM 10 each, in pounds per MMBtu (lbs/MMBtu). The hourly emission rates will be calculated from the hourly quantity of su b-bituminous and/or bituminous coal and/or natural gas determined in G.4.b.(1) & (2) of this section, and the emission factor derived in G.4. a.(9) of this section for coal combustion and emission factor (7.6 lb/10 6 scf) listed in AP-42, Table 1.4-2. for natural gas combustion.

Sample Calculation:

(tons-coal/Btu)(lb/tons-coal) = lbs-PM/Btu or lbs-PM/MMBtu (scf natural gas/Btu)(7.6 lb/10 6 scf) = lbs-PM/Btu or lbs-PM/MMBtu – natural gas

Sum:

lbs-PM/MMBtu - Coal + lbs-PM/MMBtu – natural gas = Hourly Emission Rate in lbs-PM/MMBtu

(6) The emission rates of sulfur and SO 2 each, in pounds per hour (lbs/hr) and pounds per million Btu (lbs/MMbtu) measured by the CEMS required in G.4.b.(8) of this section, for each averaging period

described below: (i). The sulfur emissions in pounds per hour (lbs/hr) for each 1-hour period. Sulfur emissions will be one-half

of the SO 2 emissions measured. (ii). The Sulfur and SO 2 emissions in pounds per million Btu (lbs/ MMBtu) and the percent reduction levels for each 30-day rolling average period. The compliance determination procedures established in 40 CFR Part 60.48a(c) will be used to convert the continuous monitoring data into units of the applicable standards (lb/MMBtu, 30-day rolling aver age period and percent reduction).

(7) The hourly emissions rate of NO

x in pounds per million Btu (lbs/MMBtu) and the percent reduction levels for each 30-day rolling aver age period measured by the CEMS required in G.4.b.(10) of this section. The compliance determination procedur es established in 40 CFR Part 60. 48a(d) will be used to convert the continuous monitoring data into units of the applic able standard (lb/MMBtu, 30-day rolling average period and percent reduction).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-47 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program (continued)

c. Recordkeeping (continued) (8) The measured opacity (in percent opacity) from the continuous opacity moni toring system required in G.4.b.(13) of this section. The opacity will be deter mined from reducing all data from the successive 10- second readings and recorded for the following: (i). Each 6-minute average, except for one 6-minut e period per hour of up to 27 percent opacity as established in NAC 445B.22017.1(b) and as set forth in 40 CFR Part 60.13(h). (ii). Each 6-minute average, except for one 6-minut e period per hour of up to 27 percent opacity as established in 40 CFR Part 60.42a(b).

d. Reporting

The Permittee will: (1) Report all excess emissions as required in Sections III.B and III.C of this operating permit. (2) Report all deviations as required in Section V.C of the operating permit. (3) Submit semi-annual monitoring reports as re quired in Section V.C of this operating permit. (4) Certify compliance with all applicable requirements as required in Section V.E of this operating permit. (5) Report the results of the performance tests and opacit y observations required in G.4.a.(10) of this section. (6) Federally Enforceable PSD Permit Require ment (PSD Permit Issued 1/3/80) - Submit a written report of

excess emissions to the Administrator and the Director every calendar quarter. The report shall include: (i). The magnitude of excess emissions computed in accordance with 40 CFR 60.13(h), any conversion factor(s) used, and the date and time of commencement and completion of each time period of excess

emissions. (ii). Specific identification of each period of excess emissions that o ccurs during start-ups, shutdowns, and malfunctions. The nature and cause of any malfunction (if known) and the corrective action taken or preventative measures adopt ed shall also be reported. (iii). The date and time identifying each period during which the continuous monitoring system was inoperative except for zero and span checks and t he nature of the system repairs or adjustments. (iv). When no excess emissions have occurred or the continuous monitori ng system has not been inoperative, repaired, or adjusted, such information shall be stated in the report. (v). Reid Gardner Unit #4 is subject to the federal regulations entitled “Standar ds of Performance for New Stationary Sources” (40 CFR Part 60). Nevada Powe r Company shall comply with all requirements of Subpart Da of this regulation. (vi). The Permittee shall maintain a file of all measurements, including continuous monitoring system, monitoring device, and performance testing meas urements; all continuous monitoring system performance evaluations; all continuous monitoring system or monitoring device calibration checks; adjustments and maintenance performed on these system s or devices; and all other information required by 40 CFR part 60 recorded in a permanent form suitable for inspection. The file shall be retained for at least two years following the date of such meas urements, maintenance, reports, and records. (7) Federally Enforceable New Source Performance Standard Requirement - Submit reports in accordance with the provisions established in 40 CFR Part 60.49a.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-48 

## Section VI. Specific Operating Conditions (continued)

G. Emission Unit #S2.004 (continued) 4. NAC 445B.3405 (NAC 445B.316) Part 70 Program (continued)

d. Reporting (continued) (8) Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirements apply only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner which results an increase in emissions above any allowable emission s limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provisi on shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (NAC 445B.316) Part 70 Program Shielded Requirements No specific shield requested.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-49 

## Section VI. Specific Operating Conditions (continued)

H. Emission Unit #S2.004

. Alternative Operating Scen ario: Co-Firing Coal and No. 2 Distillate Fuel Oil. System 04B is completely DELETED (dated March 14, 2008 ).

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-50 

## Section VI. Specific Operating Conditions (continued)

I. Emission Units #S2.005 through S2.008 UTM: North 4059.35 km, East 711.68 km (Zone 11)

System 05 Cooling Towers - Units #1 through #4

S2.005 Reid Gardner Unit #1 Cooling Tower (CT-01), Positive Draft Type , Marley Model and Serial# unknown, In Service 1965, 63,800 gallon/min Circulating Water Flow Rate S2.006 Reid Gardner Unit #2 Cooling Tower (CT-02), Positive Draft Type , Marley Model and Serial# unknown, In Service 1968, 63,800 gallon/min Circulating Water Flow Rate S2.007 Reid Gardner Unit #3 Cooling Tower (CT-03), Positive Draft Type , Marley Model and Serial# unknown, In Service 1976, 63,800 gallon/min Circulating Water Flow Rate S2.008 Reid Gardner Unit #4 Cooling Tower (CT-04), Positive Draft Type , Marley Model and Serial# unknown, In Service 1983, 131,000 gallon/min Circulating Water Flow Rate

1. NAC 445B.3405 (NAC 445B.316) Air Pollution Equipment (Part 70 Program)

Emissions from S2.005 through S2.008 each will be controlled by drift eliminators.

2. NAC 445B.3405 (NAC 445B.316) (Part 70 Program)

Emission Limits a. On and after the date of startup of S2.005 through S2.008

, The Permittee will not discharge or cause the discharge into the atmosphere from the cooling tower stack of S2.005 through S2.008 each, the following pollutants in excess of the following specified limits: (1) (i). NAC 445B.305 Part 70 Program - The discharge of PM 10 (particulate matter less that 10 microns in diameter) to the atmosphere from S2.005 through S2.007 each, will not exceed 51.5 pounds per hour. (ii). NAC 445B.305 Part 70 Program - The discharge of PM 10 (particulate matter less that 10 microns in diameter) to the atmosphere from S2.008 will not exceed 105.8 pounds per hour.

(2) (i). NAC 445B.22033 State-Only Requirement - The discharge of PM 10 (particulate matter less that 10 microns in diameter) to the atmosphere from S2.005 and S2.006 each, will not ex ceed 119.24 pounds per hour. (ii). NAC 445B.22033 State-Only Requirement - The discharge of PM 10 (particulate matter less that 10 microns in diameter) to the atmosphere from S2.007 , will not exceed 119.93 pounds per hour. (iii). NAC 445B.22033 State-Only Requirement - The discharge of PM 10 (particulate matter less that 10 microns in diameter) to the atmosphere from S2.008 will not exceed 132.72 pounds per hour.

(3) (i). SIP 445.732 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere

from S2.005 and S2.006 each, will not exceed 119.24 pounds per hour. (ii). SIP 445.732 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere

from S2.007 will not exceed 119.93 pounds per hour. (iii). SIP 445.732 Federally Enforceable SIP - The discharge of PM (particulate matter) to the atmosphere

from S2.008 will not exceed 132.72 pounds per hour.

(4) NAC 445B.22017 State-Only Requirement - The opacity from of S2.005 through S2.008 each, will not equal or exceed 20%. The opacity must be determined as set forth in 445B.22017.1(a) or (b).

(5) SIP 445.721 Federally Enforceable SIP - The opacity from S2.005 through S2.008 each, will not equal or

exceed 20% for a period or periods aggregating more than 3 minutes in any one hour.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-51 

## Section VI. Specific Operating Conditions (continued)

I. Emission Units #S2.005 through S2.008 (continued) 3. NAC 445B.3405 (NAC 445B.316) ( Federally Enforceable Part 70 Program ) Operating Parameters a. (1) The maximum circulating water flow rate for S2.005 through S2.007 each, will not exceed 63,800 gallons per

minute. (2) The maximum circulating water flow rate for S2.008 will not exceed 131,000 gallons per minute. b. (1) The maximum Total Dissolved Solids (TDS) content for S2.005 through S2.008 each, will not exceed 8,500 milligrams per liter (8,500 ppm).

c. The use of chromium-based water treatment chemicals is prohibited.

d. S2.005 through S2.008 each may operate 8,760 hours per calendar year.

4. NAC 445B.3405 (NAC 445B.316) ( Federally Enforceable Part 70 Program ) Monitoring, Record keeping and Compliance

The Permittee will maintain a contemporaneous log containing at a minimum, the following recordkeeping for each day, or part of a day that S2.005 through S2.008 are operated:

a. Monitoring

The Permittee , upon the issuance date of this operating permit will: (1) Sample the cooling tower water from S2.005 through S2.008 each

, on a calendar quarterly basis for the TDS concentration in parts per million (ppm). The TDS will be determined using EPA Method 160.1 DNS.

b. Recordkeeping

The Permittee will maintain a contemporaneous log containing at a minimum, the following recordkeeping for each day, or part of a day that S2.005 through S2.008 each are operating under this operating scenario: (1) The TDS value of the circulating water of S2.005 through S2.008 each on a calendar quarterly basis. The TDS value will be based on the sampling required in I.4.a. of this section. (2) The volume flow rate of the circulating water of S2.005 through S2.008 each, on an hourly basis. (3) The total hourly quantities of water circulated for each hour of each day S2.005 through S2.008 operates. (4) The total daily hours of operation of S2.005 through S2.008 for the corresponding date. (5) Inspect and record in a contemporaneous log the maintenance and operation of the drift eliminators of

S2.005 through S2.008 each in accordance with the manufacturer’s guidelines on an annual basis. Annual inspection records must show that observations were made and include records of any corrective actions

taken.

c. Reporting

The Permittee will: (1) Report all excess emissions as required in Sections III.B and III.C of this operating permit. (2) Report all deviations as required in Section V.C of the operating permit. (3) Submit semi-annual monitoring reports as re quired in Section V.C of this operating permit. (4) Certify compliance with all applicable requirements as required in Section V.E of this operating permit.

5. NAC 445B.3405 (NAC 445B.316) Federally Enforceable Part 70 Program Shielded Requirements No specific shield requested.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-52 

## Section VI. Specific Operating Conditions (continued)

J. Emission Unit # S2.009 UTM: North 3995.5 km, East 675.5 km

System 06 No. 2 Distillate Fuel Storage Tank System

S2.009 Storage Tank with No. 2 Distillate Fuel Oil , Manufacturer, Model# and Serial# Unknown. Installed 1964. 860,000-gallon capacity.

1. NAC 445B.316 Part 70 Program Air Pollution Equipment Control system consisti ng of submerged fill.

2. NAC 445B.316 Part 70 Program

Emission Limits On and after the date of startup of S2.009

, the Permittee will not discharge or cause the discharge into the atmosphere from exhaust vent of S2.009 , the following pollutants in excess of the following specified limits:

a. NAC 445B.305 (Federally Enforceable Part 70 Program ) - The discharge of VOC to the atmosphere from S2.009

will not exceed 1.4 tons per calendar year.

b. SIP 445.721 (Federally Enforceable SIP Requirement ) - The opacity from S2.009 will not equal or exceed 20% for a period or periods aggregating more than 3 minutes in any one-hour period.

c. NAC 445B.22017 State-Only Requirement - The opacity from S2.009 will not equal or exceed 20% . The opacity must be determined as set forth in 445B.22017.1(a) or (b).

3. NAC 445B.316 (Federally Enforceable Part 70 Program ) Operating Parameters

a. S2.009 (1) May store No. 2 distillate fuel oil only. (2) Maximum throughput will not exceed 420,000,000 gallons per calendar year. (3) May operate 8,760 hours per year.

4. NAC 445B.316 Part 70 Program Monitoring, Record keeping and Compliance Upon issuance of this permit, the Permittee will: a. Monitor and record in a contemporaneou s log, the total fuel oil throughput for S2.009 on a monthly basis for the calendar year.

5. NAC 445B.316 Part 70 Program Shielded Requirements No specific shield requested.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-53 

## Section VI. Specific Operating Conditions (continued)

K. Emission Unit #PF1.001. UTM: North 4,059.35 km, East 711.68 (Zone 11).

System 07 – Coal Unloading Stat ion & Coal Conveying Equipment

PF1.001 Coal Train car Unloading Station (C-05) manufactured by McNalley-Pittsburgh.

Includes:

- Rail car unloading hoppers A1 #1-3 and A2 #1-7;

- Conveyor belts B, C, F, N, G, H, J, D, E, M and K;

- Flop gates F/C, G/N, and K/M;

- Feeders D, E, H-1 and H-2;

- “As-received” coal sampler and sample collector;

- “As-fired” coal sampler and sample collector;

- Unit #1-3 Coal storage pile(s); and

- Associated transfer points

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment a. Control system for PF1.001 consisting of water sprays applying water with added surfactant at transfer points and coal storage piles. b. Fully-enclosed covers over conveyors.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of PF1.001 , Nevada Power Company - Reid Gard ner Station will not discharge or cause the discharge into the atmosphere the following pollutants in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM (particulate matter) to the atmosphere from PF1.001 will not exceed 90.06 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from PF1.001 will not exceed 90.06 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from PF1.001 will not exceed 37.1 pounds per hour nor more than 50.6 tons per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

The opacity from PF1.001 will not equal or exceed 20% for a period or periods aggregating more than 3 minutes in any one hour.

e. NAC 445B.22017 & NAC 445B.355 State Only Requirements - The opacity from PF1.001 will not equal or

exceed 20% for a period or periods aggregating more than 3 minutes in any one hour.

f. 40 CFR 60.252(c) NSPS Regulation - On and after the date on which the performance test required to be conducted by Section 60.8 is completed, an owner or oper ator subject to the provis ions of NSPS Subpart Y (Coal Preparation Plants) shall not cause to be discharged into the atmosphere from any coal processing and conveying equipment, coal storage syst em, or coal transfer and loading system processing coal, gases which exhibit 20 percent opacity or greater.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-54 

## Section VI. Specific Operating Conditions (continued)

K. Emission Unit #PF1.001. (continued) 3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of coal in PF1.001 will not exceed 2,500 tons per hour.

b. Hours

1. PF1.001 may operate 8,760 hours per calendar year.

4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping, Compliance and Reporting a. Monitoring, Recordkeeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of coal for PF1.001 on a daily basis. ii. Monitor and record the hours of operation for PF1.001 on a daily basis. iii. Within 30 days of the issuance of this operating permit, the Permittee shall submit a visual observation plan to be approved by the director. The observation plan shall identify multiple observation points from where the visible emission sources, excluding emissions so urces located and operated inside a building shall be

monitored. The visual observations shall be conducted once every two-calendar weeks. All of the visible emission sources associated with each observation poi nt shall be specifically identified in within the observation plan.

iv. A certified Method 9 observer shall conduct and record a visible emission survey of visible emissions from
the emission sources, in accordance with the submi tted observation plan, once every two-calendar weeks, under normal representative operating conditions. Record the time and date of the survey and whether any

visible emissions were observed. If the visible emissi on survey detects any visibl e emissions, the Permittee will conduct a Method 9 visible emissions reading conduc ted by a certified visible emissions reader within 4 hours of the initial visible observation survey, incl uding all documents required under 40 CFR Part 60, Appendix A. v. The required monitoring established in (i.) through (iv.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.001 is operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of coal, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of coal, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above. (e) Results and verification of the visible emission s survey, and documentation of any Method 9 visible emission tests that were undertaken, including all documents required under 40 CFR Part 60, Appendix

A. vi. As a means of showing initial co mpliance with the NSPS Subpart Y opacity limit prescribed in k.2.f. of this section, within 180 days from the dat e of issuance of this operating permit, conduct and record a Method 9 Initial Opacity Compliance Demonstration (IOCD) for all emission Units that support boiler Unit #3 using the procedures in Section 60.11 to determi ne the opacity from the discharge of PF1.002 to the atmosphere. The Method 9 IOCD shall be performed and recorded by a certified opacity reader.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-55 

## Section VI. Specific Operating Conditions (continued)

K. Emission Unit #PF1.001. (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping, Compliance and Reporting (continued) b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner which results an increase in emissions above any allowable emission s limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provisi on shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-56 

## Section VI. Specific Operating Conditions (continued)

L. Emission Unit #PF1.002. UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 08 – Coal Unloading Stat ion & Coal Conveying Equipment

PF1.002 Loading of Unit #4 Coal Conveying (C-06a) manufactured by McNalley-Pittsburgh.

Includes:

- Unit #4 coal storage pile(s)

- Feeders 0-1A, 0-1B, 0-2B and 0-2A;

- Conveyors 0-1, 0-2, P-1 and P-2; and

- Associated transfer points.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment a. Control system for PF1.002 consisting of water sprays applying water with added surfactant at transfer points and coal storage piles. b. Fully-enclosed covers over coal conveyors.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of PF1.002 , Nevada Power Company - Reid Gard ner Station will not discharge or cause the discharge into the atmosphere the following pollutants in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM (particulate matter) to the atmosphere from PF1.002 will not exceed 82.02 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 to the atmosphere from PF1.002 will not

exceed 82.02 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from PF1.002 will not exceed 0.2 pound per hour nor more than 0.02 ton per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

The opacity from PF1.002 discharge will not equal or exceed 20% for a period or periods aggr egating more than 3 minutes in any one hour.

e. NAC 445B.22017, & NAC445B.355 State Only Requirements - The opacity from PF1.002 discharges will not equal or exceed 20% for a period or periods aggr egating more than 3 minutes in any one hour.

f. 40 CFR 60.252(c) NSPS Regulation - On and after the date on which the performance test required to be conducted by Section 60.8 is completed, an owner or oper ator subject to the provis ions of NSPS Subpart Y (Coal Preparation Plants) shall not cause to be discharged into the atmosphere from any coal processing and conveying equipment, coal storage system, or coal tr ansfer and loading system proc essing coal, gases which exhibit 20 percent opacity or greater.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-57 

## Section VI Specific Operating Conditions (continued)

L. Emission Unit #PF1.002 (continued) 3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of coal in PF1.002 will not exceed 1,400 tons per hour.

b. Hours

1. PF1.002 may operate 8,760 hours per calendar year.

4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting a. Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of coal for PF1.002 on a daily basis. ii. Monitor and record the hours of operation for PF1.002 on a daily basis. iii. Within 30 days of the issuance of this operating permit, the Permittee shall submit a visual observation plan to be approved by the director. The observation plan shall identify multiple observation points from where the visible emission sources, excluding emissions so urces located and operated inside a building shall be

monitored. The visual observations shall be conducted once every two-calendar weeks. All of the visible emission sources associated with each observation poi nt shall be specifically identified in within the observation plan.

iv. A certified Method 9 observer shall conduct and record a visible emission survey of visible emissions from
the emission sources, in accordance with the submi tted observation plan, once every two-calendar weeks, under normal representative operating conditions. Record the time and date of the survey and whether any

visible emissions were observed. If the visible emissi on survey detects any visibl e emissions, the Permittee will conduct a Method 9 visible emissions reading conduc ted by a certified visible emissions reader within 4 hours of the initial visible observation survey, incl uding all documents required under 40 CFR Part 60, Appendix A. v. The required monitoring established in (i.) through (iv.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.002 is operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of coal, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of coal, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above. (e) Results and verification of the visible emission s survey, and documentation of any Method 9 visible emission tests that were undertaken, including all documents required under 40 CFR Part 60, Appendix

A. vi. As a means of showing initial co mpliance with the NSPS Subpart Y opacity limit prescribed in L.2.f. of this section, within 180 days from the dat e of issuance of this operating permit, conduct and record a Method 9 Initial Opacity Compliance Demonstrat ion (IOCD) using the procedures in Section 60.11 to determine the opacity from the discharge of PF1.002 to the atmosphere. The Method 9 IOCD shall be performed and recorded by a certified opacity reader.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-58 

## Section VI Specific Operating Conditions (continued)

L. Emission Unit #PF1.002 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting (continued) b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a

normal manner which results an increase in emissions above any allowable emissions limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased d ue to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed un der Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: N e vada Pow er Company—Reid Gardn er Statio n Pow er Plant, as Permittee

VI -5 9 

## Section VI. Specific Operating Conditions (continued)

M

. Emission Un its # S2.010 and PF1.003. UTM: No rth 4,059.35 km

, East 711.68 km (Zone 11).

1. NAC 44 5B.34 05 (44 5 B.316 ) Part 70 Program Air Pollution Equipme n t

a. E m issi on s f r o m S2.010 sh all be du cted to silo vent fabric filters wit h 100% ca ptu r e efficien cy installe d on e a ch

silo.

b. Control syste m for PF1.00 3 con s i s ting o f an enclo su re.

c. S2.010 sh all be located in fully-encl o sed (trippe r-roo m ) buildin g.

2. NAC 44 5B.34 05 (44 5 B.316 ) Part 70 Program

Emissi on Lim i ts
On a nd after the d a te of startup of S2 .010 an d PF 1.003

, Nevad a Power Co mpany - Rei d Ga rdn e r Station will not

discha rge or cau s e th e di scha rge into t he atmo sp he re the foll owi ng poll u tants in exce ss of the followi ng spe c ified

limits:

a. SIP 445.732 Fed e rall y E n forceabl e S I P Req u irem ent - T he discha rge of PM (parti cu late matter) to th e atmosp he re from S2.010 will not exceed 90.06 po un ds pe r ho ur. The disch a rge of PM to the atmo sphe re fro m PF1.003 will not exceed 55 .6 3 pou nd s per ho ur.

b. NAC 445B.2 2033 State

- O n ly Req u irem ent - T he discha rge of P M 10 (partic u late matter less th an 1 0 mic r on s in

diamete r) to the atmo sph e r e from S2.010 will not ex ceed 90.06 p ound s pe r ho ur. The di scharg e of PM 10 to the
atmosp he re from PF1.00 3 will not exceed 55.63 po un ds pe r hou r.

c. NAC 44 5B.305 Part 70 Prog ram - The disch arge of PM (particul a te matter) a nd PM 10 (partic u late matter less

than 10 mi crons in di amet er) to the atm o sp here from S2.010 and PF1.003 com b ined will not exceed 0.2 poun d per ho ur n o r more tha n 0.1 ton per yea r

.

d. SIP 445.721 Fede rall y Enforceabl e SIP Req u irem ent -

Unle ss othe rwi s e p r ovide d in SIP 445.721 in clu s ive, no

own e r o r ope rator m a y cau s e or p e rmit t he disch a rg e into the atmosph e re from any stat iona ry source of a n y air

contami nant for a pe riod o r period s ag gregating mo re than 3 minute s in any 1 ho ur whi c h i s of an opa city eq ual
to or gre a ter t han 20 p e rce n t.

e. NAC 44 5B.22 017 (State O n ly Requi rem ent) - The o p a city from the discharge s o f S2.010, and PF1.003 each, to the atmosphere will not equal or exceed 20%.

f. 40 CF R 60.2 52(c) NSPS Regulation - On and after the date on which the perform an ce test req u ired to be conducted by Section 60.8 is com p leted, an owner or oper ator subj ect to the provis ions of NSPS Subpart Y (Coal Prepa ration Plants) shall not cau s e t o be disch a rged into the atmosp here from any coal proce s si ng and conveyin g eq uipment, coal storage syst em, or coal t r an sfer and l oadin g sy ste m pro c e s sing coal, g a ses whi c h exhibit 20 percent op acity or greater. System 09 - Units # 1 -3 Coal Storage Silos (C-0 1)

S2.010 Loadi ng of (1 2) Co al Silos for Unit s #1-3 (C-01a ), m anufactu red b y

McNall ey-Pittsburgh, m odel #512K -8.

PF1.003 Unlo ading of (12 ) Co al Silos for Units #1 -3 (C-0 1b ), manufa c ture d b y

McNalle y-Pittsburg h , m odel #512K

8.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-60 

## Section VI. Specific Operating Conditions (continued)

M. Emission Units # S2.010 and PF1.003 (continued) 3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of coal in S2.010 will not exceed 1,650 tons per hour. b. Maximum allowable throughput of coal in PF1.003 will not exceed 152.8 tons per hour.

c. Hours

S2.010 and PF1.003 each may operate 8,760 hours per calendar year.

4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting a. Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of coal for PF1.003 and S2.010 each on a daily basis. ii. Monitor and record the hours of operation for PF1.003 and S2.010 each on a daily basis. iii. The required monitoring established in (i.) through ( ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.003 and/or

S2.010 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of coal, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of coal, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above. (e) Results and verification of the visible emission s survey, and documentation of any Method 9 visible emission tests that were undertaken, including all documents required under 40 CFR Part 60, Appendix

A. iv. As a means of showing initial compliance with t he NSPS Subpart Y opacity limit prescribed in M.2.f. of this section, within 180 days from the dat e of issuance of this operating permit, conduct and record a Method 9 Initial Opacity Compliance Demonstrat ion (IOCD) using the procedures in Section 60.11 to determine the opacity from the discharge of S2.010 to the atmosphere. The Method 9 IOCD shall be performed and recorded by a certified opacity reader.

v. On an annual basis for PF1.003 , perform and record visible emissions insp ections at the point of transfer of coal from the coal storage silos to the boiler coal mills, while coal is being discharged from the silos. If these visible emissions inspections document any opac ity discharged to the atmosphere greater than 0% from the enclosed transfer points, provide imm ediate corrective action in the affe cted transfer enclosures. Annual visible emissions inspection records must show that observations were made and include records of any

corrective actions taken.

vi. On an annual basis, perform an inspection of the PF1.003 coal silo discharge enclosures for each of the coal storage silos. Annual enclosure inspection records must show that observations were made and include records of any corrective actions taken.

vii. On an annual basis, perform an inspection of the S2.010 coal silo fabric bag filter for each of the coal storage silos. Annual bag inspection records must show that observations were made and include records of any

corrective actions taken.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-61 

## Section VI. Specific Operating Conditions (continued)

M. Emission Units # S2.010 and PF1.003 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping and Compliance (continued) b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a

normal manner which results an increase in emissions above any allowable emissions limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased d ue to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed un der Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: N e vada Pow er Company—Reid Gardn er Statio n Pow er Plant, as Permittee

VI -6 2 

## Section VI. Specific Operating Conditions (continued)

N. Emission Un its # S2.011 and PF1.004. UTM: No rth 4,059.35 km

, East 711.68 km (Zone 11).

1. NAC 44 5B.34 05 (44 5 B.316 ) Part 70 Program Air Pollution Equipme n t

a. E m issi on s f r o m S2.011 sh all be du cted to sil o vent f abri c filters with 100% ca p t ure effici en cy installe d on ea ch

silo.

b. Control syste m for PF1.00 4 con s i s ting o f an enclo su re.

c. S2.011 sh all be located in fully enclo sed (ca s cade roo m ) buildi ng.

2. NAC 44 5B.34 05 (44 5 B.316 ) Part 70 Program

Emissi on Lim i ts
On a nd after the d a te of startup of S2 .011 an d PF 1.004

, Nevad a Power Co mpany - Rei d Ga rdn e r Station will not

discha rge or cau s e th e di scha rge into t he atmo sp he re the foll owi ng poll u tants in exce ss of the followi ng spe c ified

limits:

a. SIP 445.732 Fede rall y Enforceabl e SIP Req u irem ent - The disch a rge of PM to the atmosphe re from S2.011 will

not excee d 82 .0 2 pou nd s per ho ur. Th e discha rge o f PM to the atmosp he re fro m PF1.004 will not exceed 53.40

poun ds p e r h our.

b. NAC 445B.2 2033 State

- Only Re qui re m ent - The discha rge of PM 10 to the atmosp he re f r om S2.011 will not

excee d 82.02 pound s pe r hour. The di scharge of PM 10 to the atmosp he re fro m PF1.004 will not exceed 53.4 0

poun ds p e r h our.

c. NAC 44 5B.305 Part 70 Prog ram - The disch arge of PM (particul a te matter) a nd PM 10 (partic u late matter less

than 10 mi crons in di amet er) to the atm o sp here from S2.011 and PF1.004 com b ined will not exceed 0.2 poun d per ho ur n o r more tha n 0.1 ton per yea r

.

d. SIP 445.721 Fede rall y Enforceabl e SIP Req u irem ent -

Unle ss othe rwi s e p r ovide d in SIP 445.721 in clu s ive, no

own e r o r ope rator m a y cau s e or p e rmit t he disch a rg e into the atmosph e re from any stat iona ry source of a n y air

contami nant for a pe riod o r period s ag gregating mo re than 3 minute s in any 1 ho ur whi c h i s of an opa city eq ual
to or gre a ter t han 20 p e rce n t.

e. NAC 44 5B.22 017 (State O n ly Requi rem ent) - The o p a city from the discharge s o f S2.011, and PF1.004 to the
atmosp he re, each , will not equal or ex ceed 20%.

f. 40 CF R 60.2 52(c) NSPS Regulation - On and after the date on which the perform an ce test req u ired to be conducted by Section 60.8 is com p leted, an owner or oper ator subj ect to the provis ions of NSPS Subpart Y (Coal Prepa ration Plants) shall not cau s e t o be disch a rged into the atmosp here from any coal proce s si ng and conveyin g eq uipment, coal storage syst em, or coal t r an sfer and l oadin g sy ste m pro c e s sing coal, g a ses whi c h exhibit 20 percent op acity or greater. System 10 - Unit #4 Coal Storag e Silos (C-02 )

S2.011 Loadi ng of (8 ) Coal Silo s for Unit #4 (C- 02a), m anufa c ture d by M c Nalle y-Pittsb u rgh.

PF1.004 Unlo ading of (8) Coal Silo s for Unit #4 (C-0 2b ), m anufacture d by M c Nalle y-Pittsb u rgh.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-63 

## Section VI. Specific Operating Conditions (continued)

N. Emission Units # S2.011 and PF1.004 (continued) 3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of coal in S2.011 will not exceed 1,800 tons per hour. b. Maximum allowable throughput of coal in PF1.004 will not exceed 123.2 tons per hour.

c. Hours

i. S2.011 and PF1.004 each may operate 8,760 hours per calendar year.

4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting a. Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of coal for PF1.004 and S2.011 each on a daily basis. ii. Monitor and record the hours of operation for PF1.004 and S2.011 each on a daily basis. iii. The required monitoring established in (i.) through ( ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.004 and/or

S2.001 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of coal, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of coal, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above. (e) Results and verification of the visible emission s survey, and documentation of any Method 9 visible emission tests that were undertaken, including all documents required under 40 CFR Part 60, Appendix

A. iv. As a means of showing initial compliance with t he NSPS Subpart Y opacity limit prescribed in M.2.f. of this section, within 180 days from the dat e of issuance of this operating permit, conduct and record a Method 9 Initial Opacity Compliance Demonstrat ion (IOCD) using the procedures in Section 60.11 to determine the opacity from the discharge of S2.011 to the atmosphere. The Method 9 IOCD shall be performed and recorded by a certified opacity reader.

v. On an annual basis for PF1.004 , perform and record visible emissions insp ections at the point of transfer of coal from the coal storage silos to the boiler coal mills, while coal is being discharged from the silos. If these visible emissions inspections document any opac ity discharged to the atmosphere greater than 0% from the enclosed transfer points, provide imm ediate corrective action in the affe cted transfer enclosures. Annual visible emissions inspection records must show that observations were made and include records of any

corrective actions taken. vi. On an annual basis, perform an inspection of the PF1.003 coal silo discharge enclosur es for each of the coal storage silos. Annual enclosure inspection records must show that observations were made and include records of any corrective actions taken. vii. On an annual basis, perform an inspection of the S2.010 coal silo fabric bag filter for each of the coal storage silos. Annual bag inspection records must show that observations were made and include records of any

corrective actions taken.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-64 

## Section VI. Specific Operating Conditions (continued)

N. Emission Units # S2.011 and PF1.004 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping , Compliance and Reporting (continued) b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a

normal manner which results an increase in emissions above any allowable emissions limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased d ue to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed un der Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-65 

## Section VI. Specific Operating Conditions (continued)

O. Emission Units # PF1.005 through # PF1.008. UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 11 - Coal Crushing & Screening Station (C-03)

PF1.005 Coal Granulation Crusher #1 (C-0 3a), manufactured by Pennsylvania Co., model #TKKB, serial #4149.

PF1.006 Coal Granulation Crusher #2 (C-0 3b), manufactured by Pennsylvania Co., model #TKKB, serial #4150.

PF1.007 Coal Granulation Crusher #3 (C-03c ), manufactured by Pennsylvania Co., model #TK-9-388, serial

#3101.

PF1.008 Link Belt Coal Screen (C-03d), manufactured by FMC, model #823513-Z.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment a. Control systems for PF1.005 through PF1.008 each shall consist of water sprays installed at PF1.005, PF1.006,

PF1.007 and PF1.008.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of PF1.005 through PF1.008 , the Permittee will not discharge or cause the discharge into the atmosphere the following pollutant s in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM (particulate matter) to the atmosphere from PF1.005 through PF1.007 , each, will not exceed 80.51 pounds per hour. The discharge of PM to the atmosphere from PF1.008 will not exceed 90.06 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from PF1.005 through PF1.007 , each, will not exceed 80.51 pounds per hour. The discharge of PM 10 to the atmosphere from PF1.008 will not exceed 90.06 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from PF1.005 through PF1.007 each will not exceed 0.7 pound per hour, nor more than 0.04 ton per year. The discharge of PM (particulate matter) and PM 10 (particulate matter

less than 10 microns in diamet er) to the atmosphere from PF1.008 will not exceed 2.1 pounds per hour, nor more than 0.1 ton per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more than 3 minutes in any 1 hour which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges of PF1.005 through PF1.008 to the atmosphere, each , will not equal or exceed 20%.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-66 

## Section VI. Specific Operating Conditions (continued)

O. Emission Units # PF1.005 through # PF1.008 (continued) 3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of coal in PF1.005 through PF1.007 , each, will not exceed 1,250 tons per hour, averaged on a daily basis. b. Maximum allowable throughput of coal in PF1.008 will not exceed 2,500 tons per hour, averaged on a daily

basis.

c. Hours

i. PF1.005 through PF1.008 each may operate 100 hours per calendar year.

4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting a. Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of coal for PF1.005 through PF1.007 each on a daily basis. ii. Monitor and record the hours of operation for PF1.005 through PF1.007 each on a daily basis. iii. The required monitoring established in (i.) through (iv.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.005 through

PF1.007 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of coal, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of coal, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above. b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner which results an increase in emissions above any allowable emission s limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provisi on shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-67 

## Section VI. Specific Operating Conditions (continued)

P. Emission Units #S2.012 and PF1.009. UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 12 - Units #1-3 Fly Ash Storage Silos (C-04)

S2.012 Loading of Fly Ash Silo for Units #1-3 (C-04a), manufactured by United Conveyor Corp.

PF1.009 Unloading of Fly Ash Silo for Units #1-3 (C-0 4a), manufactured by United Conveyor Corp.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.012 shall be ducted to a pulse-jet fabric filter wi th 100% capture efficiency installed on the fly

ash silo.

b. Control system for PF1.009 consisting of best operational practices to ensure compliance with the emission limits

stated below.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.012 and PF1.009, each , the Permittee will not discharge or cause the discharge into the atmosphere the following pollutant s in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM (particulate matter) to the atmosphere from S2.012 and PF1.009 each will not exceed 17.20 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from S2.012 and PF1.009 each will not exceed 17.20 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10microns in diameter) to the atmosphere from S2.012 and PF1.009 combined will not exceed 0.6 pound per hour nor more than 4.4 ton per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more t han 3 minutes in any 1 hour, which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges S2.012 and PF1.009 each, to the atmosphere will not equ al or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of fly ash in S2.012 and PF1.009 each will not exceed 8.5 tons per hour.

b. Hours

i. S2.012 and PF1.009 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-68 

## Section VI. Specific Operating Conditions (continued)

P. Emission Units #S2.012 and #PF1.009 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting a. Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of fly ash for PF1.009 and S2.012 each on a daily basis. ii. Monitor and record the hours of operation for PF1.009 and S2.012 each on a daily basis. iii. The required monitoring established in (i.) through ( ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.009 and/or

S2.012 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of fly ash, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of fly ash, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above. (e) Calculate fly ash throughput in tons as follows: [8.5 tons per hour] x [hours of operation] x [baghouse control efficiency].The value for baghouse control efficiency shall be from a written manufacturer’s guarantee, or a NDEPBAPC approved performance test of the baghouse under permitted conditions or the NDEP-BAPC standard control efficiency rating for a properly main tained baghouse of 0.02 grains/dscf. Record what method is used to obtain baghouse control efficiency.

b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner which results an increase in emissions above any allowable emission s limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provisi on shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-69 

## Section VI. Specific Operating Conditions (continued)

Q. Emission Units #S2.013 and PF1.010

. UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 13 - Units #1-3 Backup Fly Ash Storage Silos (C-07)

S2.013 Loading of Backup Fly Ash Silo for Units #1-3 (C-07a), manufactured by Smoot Co. Inc.

PF1.010 Unloading of Backup Fly Ash Silo for Units #1- 3 (C-07a), manufactured by Smoot Co. Inc.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.013 shall be ducted to a pulse-jet fabric filter wi th 100% capture efficiency installed on the fly

ash silo. b. Control system for PF1.010 consisting of best operational practices to ensure compliance with the emission limits

stated below.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.013 and PF1.010, each , the Permittee will not discharge or cause the discharge into the atmosphere the following pollutant s in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM to the atmosphere from S2.013 will

not exceed 13.62 pounds per hour. The discharge of PM to the atmosphere from PF1.010 will not exceed 44.39 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 to the atmosphere from S2.013 will not

exceed 13.62 pounds per hour. The discharge of PM 10 to the atmosphere from PF1.010 will not exceed 44.39 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10microns in diameter) to the atmosphere from S2.013 and PF1.010 combined will not exceed 0.5 pound per hour nor more than 1.8 tons per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more t han 3 minutes in any 1 hour, which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges S2.013 and PF1.010 each to the atmosphere, will not equ al or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of fly ash in S2.013 will not exceed 6 tons per hour. b. Maximum allowable throughput of fly ash in PF1.010 will not exceed 35 tons per hour.

c. Hours

1. S2.013 and PF1.010 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-70 

## Section VI. Specific Operating Conditions (continued)

Q. Emission Units # S2.013 and PF1.010 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting a. Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of fly ash for PF1.010 and S2.013 each on a daily basis. ii. Monitor and record the hours of operation for PF1.010 and S2.013 each on a daily basis. iii. The required monitoring established in (i.) through ( ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.010 and/or

S2.013 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of fly ash, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of fly ash, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above. (e) Calculate fly ash throughput in tons as follows: [8.5 tons per hour] x [hours of operation] x [baghouse control efficiency].The value for baghouse control efficiency shall be from a written manufacturer’s guarantee, or a NDEPBAPC approved performance test of the baghouse under permitted conditions or the NDEP-BAPC standard control efficiency rating for a properly main tained baghouse of 0.02 grains/dscf. Record what method is used to obtain baghouse control efficiency.

b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a

normal manner which results an increase in emissions above any allowable emissions limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased d ue to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed un der Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provision shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-71 

## Section VI. Specific Operating Conditions (continued)

R. Emission Units #S2.014 and PF1.011

. UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 14 - Unit #4 Fly Ash Storage Silos (C-09)

S2.014 Loading of Fly Ash Silo for Unit #4 (C-09a), manufactured by United Conveyor Corp.

PF1.011 Unloading of Fly Ash Silo for Unit #4 (C- 09b), manufactured by United Conveyor Corp.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.014 shall be ducted to a pulse-jet fabric filter wi th 100% capture efficiency installed on the fly

ash silo. b. Control system for PF1.011 consisting of best operational practices to ensure compliance with the emission limits

stated below.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.014 and PF1.011 , each, the Permittee will not discharge or cause the discharge into the atmosphere the following pollutant s in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM to the atmosphere from S2.014 and

PF1.011 , each, will not exceed 20.44 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 to the atmosphere from S2.014 and

PF1.011 , each, will not exceed 20.44 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10microns in diameter) to the atmosphere from S2.014 and PF1.011 combined , will not exceed 0.3 pound per hour nor more than 1.7 tons per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more t han 3 minutes in any 1 hour, which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges of S2.014 and PF1.020 each to the atmosphere will not equal or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of fly ash in S2.014 and PF1.011 , each, will not exceed 11 tons per hour.

b. Hours

1. S2.014 and PF1.011 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-72 

## Section VI. Specific Operating Conditions (continued)

R. Emission Units # S2.014 and PF1.011 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping, Compliance and Reporting a. Monitoring, Recordkeeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of fly ash for PF1.011 and S2.014 each on a daily basis. ii. Monitor and record the hours of operation for PF1.011 and S2.014 each on a daily basis. iii. The required monitoring established in (i.) through ( ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.011 and/or

S2.014 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of fly ash, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of fly ash, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above. (e) Calculate fly ash throughput in tons as follows: [11.0 tons per hour] x [hour s of operation] x [baghouse control efficiency].The value for baghouse control efficiency shall be from a written manufacturer’s guarantee, or a NDEPBAPC approved performance test of the baghouse under permitted conditions or the NDEP-BAPC standard control efficiency rating for a properly main tained baghouse of 0.02 grains/dscf. Record what method is used to obtain baghouse control efficiency.

b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner which results an increase in emissions above any allowable emission s limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provisi on shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-73 

## Section VI. Specific Operating Conditions (continued)

S. Emission Units # S2.015 and #PF1.012. UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 15 – Units #1-3 Soda Ash Slurry Tank

S2.015 Loading of Units #1-3 Soda Ash Slurry Tank (W-01), manufactured by Brown-Minneapolis Tank, serial

#276901.

PF1.012 Unloading of Units #1-3 Soda Ash Slurry Tank (W-01), manufactured by Brown-Minneapolis Tank, serial

#276901.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.015 shall be ducted to an inverted venturi scrubber with 100% capture efficiency installed on

S2.015. b. Control system for PF1.012 shall consist of a wet (saturated) process.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.015 and PF1.012 , the Permittee will not discharg e or cause the discharge into the atmosphere the following pollutants in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM (particulate matter) to the atmosphere from S2.015 and PF1.012 each will not exceed 7.37 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from S2.015 and PF1.012 each will not exceed 7.37 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from S2.015 and PF1.012 combined will not exceed 0.13 pound per hour nor more than 0.54 ton per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more than 3 minutes in any 1 hour which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges of S2.015 and PF1.012 each to the atmosphere will not equal or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of soda ash in S2.015 will not exceed 2.4 tons per hour. b. Maximum allowable throughput of soda ash solution for PF1.012 will not exceed 2.4 tons per hour.

c. Hours

S2.015 and PF1.012 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-74 

## Section VI. Specific Operating Conditions (continued)

S. Emission Units # S2.015 and PF1.012 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of soda ash for PF1.012 and S2.015 each on a daily basis. ii. Monitor and record the hours of operation for PF1.012 and S2.015 each on a daily basis. iii. The required monitoring established in (i.) through (ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.012 and/or S2.015 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of soda ash, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of soda ash, in tons per hour. The average hourly throughput rate will be determined from the daily throughput rate and the total daily hours of operation recorded in (b) and (c) above.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-75 

## Section VI. Specific Operating Conditions (continued)

T. Emission Units # S2.016 and PF1.013 . UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 16 - Unit #4 FGD Soda Ash Slurry Tank

S2.016 Loading of Unit #4 FGD Soda Ash Slurry Tank (W-0 2), manufactured by Portec, serial #T-403-1.

PF1.013 Unloading of Unit #4 FGD Soda Ash Slurry Tank (W -02), manufactured by Portec, serial #T-403-1.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.016 shall be ducted to an inverted venturi scrubber with 100% capture efficiency installed on

S2.016. b. Control system for PF1.013 shall consist of a wet (saturated) process.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.016 and PF1.013, each , the Permittee will not discharge or cause the discharge into the atmosphere the following pollutant s in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM to the atmosphere from S2.016 and

PF1.013 each will not exceed 6.63 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 to the atmosphere from S2.016 and PF1.013

each will not exceed 6.63 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from S2.016 and PF1.013 combined will not exceed 0.11 pound per hour nor more than 0.49 ton per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more than 3 minutes in any 1 hour which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges of S2.016 and PF1.013 each, to the atmosphere will not equal or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of soda ash in S2.016 will not exceed 2.05 tons per hour. b. Maximum allowable throughput of soda ash solution for PF1.013 will not exceed 2.05 tons per hour.

c. Hours

S2.016 and PF1.013 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-76 

## Section VI. Specific Operating Conditions (continued)

T. Emission Units # S2.016 and #PF1.013 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of soda ash for PF1.013 and S2.016 each on a daily basis. ii. Monitor and record the hours of operation for PF1.013 and S2.016 each on a daily basis. iii. The required monitoring established in (i.) through (ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.013 and/or S2.016 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of soda ash, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of soda ash, in tons per hour. The average hourly throughput rate will be determined from the daily throughput rate and the total daily hours of operation recorded in (b) and (c) above.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-77 

## Section VI. Specific Operating Conditions (continued)

U. Emission Units # S2.017 and PF1.014 . UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 17 – Unit #4 FGD Lime Storage Silo

S2.017 Loading of Unit #4 FGD Lime Storage Silo (W-03), manufactured by O.A. Newton, serial #276901.

PF1.014 Unloading of Unit #4 FGD Lime Storage Silo (W-03) , manufactured by O.A. Newton, serial #276901.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.017 shall be ducted to pulse-jet fabric filter with 100% capture efficiency installed on S2.017. b. Control system for PF1.014 consisting of an enclosure.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.017 and PF1.014 each , the Permittee will not discharge or cause the discharge into the atmosphere the following pollutant s in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM to the atmosphere from S2.017 and

PF1.014 each will not exceed 1.79 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 to the atmosphere from S2.017 and PF1.014

each will not exceed 1.79 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from S2.017 and PF1.014 combined will not exceed 0.008 pound per hour nor more than 0.03 ton per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more than 3 minutes in any 1 hour which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges of S2.017 and PF1.014 each , to the atmosphere will not equal or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of lime in S2.017 will not exceed 0.29 ton per hour. b. Maximum allowable throughput of lime in PF1.014 will not exceed 0.29 ton per hour.

c. Hours

S2.010 and PF1.014 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-78 

## Section VI. Specific Operating Conditions (continued)

U. Emission Units # S2.017 and #PF1.014 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting a. Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of lime for PF1.014 and S2.017 each on a daily basis. ii. Monitor and record the hours of operation for PF1.014 and S2.017 each on a daily basis. iii. The required monitoring established in (i.) through ( ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.014 and/or

S2.017 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of lime, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of lime, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above.

b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner which results an increase in emissions above any allowable emission s limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provisi on shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-79 

## Section VI. Specific Operating Conditions (continued)

V. Emission Units # S2.018 and #PF1.015 . UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 18 – Unit #4 Water Treatment Soda Ash Silo

S2.018 Loading of Unit #4 Water Treatment Soda Ash Silo (W-04), manufactured by O. A. Newton.

PF1.015 Unloading of Unit #4 Water Treatment Soda Ash S ilo (W-04), manufactured by O. A. Newton.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.018 shall be ducted to pulse-jet fabric filter with 100% capture efficiency installed on S2.018

. b. Control system for PF1.015 consisting of an enclosure.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.018 and PF1.015 each , the Permittee will not discharge or cause the discharge into the atmosphere the following pollutant s in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM to the atmosphere from S2.018 and

PF1.015 each will not exceed 3.85 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 to the atmosphere from S2.018 and PF1.105

each will not exceed 3.85 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from S2.013 and PF1.015 combined will not exceed 0.02 pound per hour nor more than 0.06 tons per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more than 3 minutes in any 1 hour which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges of S2.018 and PF1.015 each , to the atmosphere will not equal or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of soda ash in S2.018 will not exceed 0.91 ton per hour. b. Maximum allowable throughput of soda ash in PF1.015 will not exceed 0.91 ton per hour.

c. Hours

S2.018 and PF1.015 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-80 

## Section VI. Specific Operating Conditions (continued)

V. Emission Units # S2.018 and #PF1.015 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of soda ash for PF1.015 and S2.018 each on a daily basis. ii. Monitor and record the hours of operation for PF1.015 and S2.018 each on a daily basis. iii. The required monitoring established in (i.) through (ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.015 and/or S2.018 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of soda ash, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of soda ash, in tons per hour. The average hourly throughput rate will be determined from the daily throughput rate and the total daily hours of operation recorded in (b) and (c) above.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-81 

## Section VI. Specific Operating Conditions (continued)

W. Emission Units # S2.019 and #PF1.016 . UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 19 – Unit #4 FGD Backup Quicklime Storage and Feed System

S2.019 Loading of Unit #4 FGD Backup Quicklime Storage & Feed System (W-05), manufactured by Portec,
model #850-QL-92.

PF1.016 Unloading of Unit #4 FGD Backup Quicklime Storage & Feed System (W-05), manufactured by Portec,
model #850-QL-92.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.019 shall be ducted to fabric filter with 100% capture efficiency installed on S2.019

. b. Control system for PF1.016 consisting of best operational practices to ensure compliance with the emission limits

stated below.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.019 and PF1.016 , the Permittee will not discharg e or cause the discharge into the atmosphere the following pollutants in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM to the atmosphere from S2.019 and

PF1.016 each , will not exceed 3.20 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 to the atmosphere from S2.019 and PF1.016

each , will not exceed 3.20 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from S2.019 and PF1.016 combined will not exceed 0.0021 pound per hour nor more than 0.009 ton per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more than 3 minutes in any 1 hour which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges of S2.019 and PF1.016 each , to the atmosphere will not equal or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of quicklime in S2.019 will not exceed 0.69 ton per hour. b. Maximum allowable throughput of quicklime in PF1.016 will not exceed 0.69 ton per hour.

c. Hours

S2.019 and PF1.016 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-82 

## Section VI. Specific Operating Conditions (continued)

W. Emission Units # S2.019 and #PF1.016 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Recordkeeping, Compliance and Reporting a. Monitoring, Record keeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of quicklime for PF1.016 and S2.019 each on a daily basis. ii. Monitor and record the hours of operation for PF1.016 and S2.019 each on a daily basis. iii. The required monitoring established in (i.) through ( ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.016 and/or

S2.019 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of qui cklime, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of quicklime, in tons per hour. The average hourly throughput rate will be determined from the daily throughput rate and the total daily hours of operation recorded in (b) and (c) above.

b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner which results an increase in emissions above any allowable emission s limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provisi on shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-83 

## Section VI. Specific Operating Conditions (continued)

X. Emission Units # S2.020 and PF1.017. UTM: North 4,059.35 km, East 711.68 km (Zone 11).

System 20 – Unit #4 FGD Lime Storage Silo

S2.020 Loading of Unit #4 FGD Lime Storage Silo (W-06), manufactured by Portec, serial #T-406-1-A.

PF1.017 Unloading of Unit #4 FGD Lime Storage Silo (W-06) , manufactured by Portec, serial #T-406-1-A.

1. NAC 445B.3405 (445B.316) Part 70 Program Air Pollution Equipment

a. Emissions from S2.020 shall be ducted to fabric filter with 100% capture efficiency installed on S2.020. b. Control system for PF1.017 consisting of best operational practices to ensure compliance with the emission limits

stated below.

2. NAC 445B.3405 (445B.316) Part 70 Program

Emission Limits On and after the date of startup of S2.020 and PF1.017 , the Permittee will not discharg e or cause the discharge into the atmosphere the following pollutants in excess of the following specified limits:

a. SIP 445.732 Federally Enforceable SIP Requirement - The discharge of PM to the atmosphere from S2.020 and

PF1.017 each , will not exceed 3.20 pounds per hour.

b. NAC 445B.22033 State-Only Requirement - The discharge of PM 10 to the atmosphere from S2.020 and PF1.017

each , will not exceed 3.20 pounds per hour.

c. NAC 445B.305 Part 70 Program - The discharge of PM (particulate matter) and PM 10 (particulate matter less than 10 microns in diameter) to the atmosphere from S S2.020 and PF1.017 combined will not exceed 0.02 pound per hour nor more than 0.03 ton per year.

d. SIP 445.721 Federally Enforceable SIP Requirement -

Unless otherwise provided in SIP 445.721 inclusive, no owner or operator may cause or permit the discharge into the atmosphere from any stat ionary source of any air contaminant for a period or periods aggregating more than 3 minutes in any 1 hour which is of an opacity equal to or greater than 20 percent.

e. NAC 445B.22017 (State Only Requirement) - The opacity from the discharges of S2.020 and PF1.017 each to the atmosphere will not equal or exceed 20%.

3. NAC 445B.3405 (445B.316) Part 70 Program Operating Parameters a. Maximum allowable throughput of lime in S2.020 will not exceed 0.69 ton per hour. b. Maximum allowable throughput of lime in PF1.017 will not exceed 0.69 ton per hour.

c. Hours

S2.020 and PF1.017 each may operate 8,760 hours per calendar year.

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VI-84 

## Section VI. Specific Operating Conditions (continued)

X. Emission Units #S2.020 and #PF1.017 (continued) 4. NAC 445B.3405 (445B.316) Part 70 Program Monitoring, Record keeping, Compliance and Reporting a. Monitoring, Recordkeeping and Compliance The Permittee, upon issuance of this operating permit will: i. Monitor and record the throughput of lime for PF1.017 and S2.020 each on a daily basis. ii. Monitor and record the hours of operation for PF1.017 and S2.020 each on a daily basis. iii. The required monitoring established in (i.) through ( ii.) above, will be maintained in a contemporaneous log containing at a minimum, the following record keeping for each day, or part of a day that PF1.017 and/or

S2.020 are operating: (a) The calendar date of any required monitoring. (b) The total daily throughput rate of lime, in tons, for the corresponding date. (c) The total daily hours of operation for the corresponding date. (d) The corresponding average hourly throughput rate of lime, in tons per hour. The average hourly throughput rate will be determined from the daily th roughput rate and the total daily hours of operation recorded in (b) and (c) above.

b. Reporting

i. Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) – The following reporting requirement applies only to Section VIII of the PSD Permit issued 1/3/80: The Regional Administrator (USEPA) shall be notified by telephone (by The Permitee) within 48 hours following any failure of air pollution control equipment, process equipment, or of a process to operate in a normal manner which results an increase in emissions above any allowable emission s limit stated in Section VIII of the USEPA-issued PSD permit dated January 3, 1980 of these conditions. In addition the Regional Administrator shall be notified in writing within fifteen (15) days of any such failure. This notification shall include a description of the malfunctioning equipment or abnormal operation, the date of the initial failure, the period of time over which emissions were increased due to failure, the cause of the failure, the estimated

resultant emissions in excess of those allowed under Section VIII of these conditions, and the methods utilized to restore normal oper ations. Compliance with this malfuncti on notification provisi on shall not excuse or otherwise constitute a defense to any violations of this permit or of any law or regulations, which such malfunction, may cause.

5. NAC 445B.3405 (445B.316) Part 70 Program Shielded Requirements No shielded provisions are established for these emission units.



## ************End of Specific Operating Conditions**************

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VII-1 

## Section VII. Emission Caps

A. No Emission Caps Defined



## ************End of Emission Caps Conditions**************

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

VIII-1 

## Section VIII. Surface Area Disturbance Conditions

A. NAC 445B.22035 Fugitive Dust

1. The Permittee may not cause or permit the handling, transporting, or storing of any material in a manner that allows or may allow controllable particulate matter to become airborne. 2. Except as otherwise provided in subsection 4, the Permittee may not cause or permit the construction, repair, demolition, or use of unpaved or untr eated areas without first putting into effect an ongoing program using the best practical methods to prevent particulate matter from becomi ng airborne. As used in this subsection, “best practical methods” includes, but is not limited to, paving, chemical stabilization, watering, phased construction, and revegetation. 3. Except as provided in subsection 4, the Permittee may not disturb or cover 5 acres or more of land or its topsoil until

the Permittee has obtained an Operating Permit for surface area di sturbance to clear, excavate, or level the land or to deposit any foreign material to fill or cover the land. 4. The provisions of subsections 2 and 3 do not apply to: a. Agricultural activities occurring on agricultural land; or b. Surface disturbances authorized by a permit issued pursuant to NRS 519A.180 which occur on land which is

not less than 5 acres or more than 20 acres.

B. NAC 445B.305 Federally Enforceable PSD Permit Requirement (PSD Permit Issued 1/3/80) Fugitive Dust Air Pollution Control Equipment ( PSD Permit Requirements, Section VIII. Special Conditions A.5. and A.7. )

1. The Permittee shall install and continuously operate and maintain the following air pollution controls:

a. General Access Roads - All general access roads to the plant shall be paved. b. Facility Roads - All roads between facilities shall be surfaced wi th gravel and treated with dust control chemicals. c. Active Coal Storage Piles - All active coal storage piles shall be co ntrolled with a wet suppression system using

surfactants. d. Inactive Coal Storage Piles - All inactive coal storage piles shall be controlled by compaction and chemical treatment if necessary.



## ************End of Surface Area Di sturbance Conditions**************

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

IX-1 

## Section IX. Schedules of Compliance

A. NDEP’s Order : Pursuant to Order dated April 3, 2007, NPC is required to insta ll gas igniters on Units 1-4 at Reid Gardner no later than July 1, 2009, and install baghouses on Units 1-3 at Reid Ga rdner no later than July 1, 2010 [re: NDEP-BAPC’s letter dated September 12, 2007, Reid Gardner Generating Stati on Permit Reopening]. NPC is required to comply with following requirements as listed in the Order:

1. Igniter Installation Project : NPC shall replace the fuel oil igniters for Units 1-4 by installing natural gas igniters in Units 1-4; replace the Burner Management System for Un its 1-4 as necessary to operate natural gas igniters; construct a natural gas pipeline connecting the Facility to the Kern River Natural Gas Pipeline; and undertake any other modifications at the Facility necessary to operate natural gas igniters in Units 1-4. NPC shall complete construction of the Igniter Installation Pr oject required herein no later than July 1, 2009. On or after July 1, 2009, NPC shall not use oil for start- up or flame stabilization of any EGU at the Facility.

2. Installation and Operation of Baghouses : NPC shall complete construction and begin operation of three separate baghouses at the Facility, for Units 1, 2, and 3, respecti vely. The completion of construction and commencement of operation of all of the baghouses shall occur on or before July 1, 2010. If construction of any one of the three baghouses has not been completed on or before July 1, 2010, NPC may shut down and cease operation of any one of the Units not operating a Baghouse at the Facility. If NPC does not receive approval from the Public Utilities Commission of Nevada (PUCN) for the installation and operation of the Baghouses for Units 1-3, NPC may decommission Units 1-3. If NPC chooses to decommission Units 1-3 due to disapproval of the Baghouse installation and/or operation, NPC shall provide written notice to the NDEP-BAPC that it intends to decommission Units 1-3 no later than November 30, 2007, or within one year of the

PUCN decision on NPC’s Integrated Resource Plan, whic hever is sooner; and, NPC shall shut down and permanently cease operation of Units 1-3 on or before November 30, 2008.

3. Monitoring, Recordkeeping and Reporting . NPC shall comply with the monitoring, recordkeeping, and reporting requirements set forth in the Facility Operating Permit.

B. Consent Decree Requirements : Reid Gardner Consent Decree was agre ed to between the NPC, NDEP-BAPC a nd the United States Environmental Protection Agency on April 3, 2007, which was entered by the United States District Court on June 14, 2007. NPC is required to comply with following requirements as listed in the Consent Decree:

1. Igniter Installation Project : NPC shall replace the fuel o il igniters for Units1-4 at the Facility by installing natural gas igniters in Units1-4; replace the Burner Management Syst em for Units 1-4 as necessary to operate natural gas igniters; construct a natural gas pipeline connecting th e Facility to the Kern River Natural Gas Pipeline; and undertake any other modifications at the Facility necessa ry to operate natural gas igniters in Units 1-4.

NPC shall complete construction of the Igniter Installati on Project required by this Paragraph no later than twentyfour months (24) after the Effective Date of this Decree. Beginning twenty-four (24) months after the Effective Dated

of this Decree NPC shall not use oil for start up or flames stabilizat ion of any EGU at the facility.”

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: Nevada Power Company—Reid Gardn er Station Power Plant, as Permittee

IX-2 

## Section IX. Schedules of Compliance (continued)

2. Installation and Operation of Baghouses : By no later than thirty-six (36) mont hs after the Effective Date of this Decree NPC shall complete construction and begin operating th ree separate Baghouses at the Facility, for Units 1, 2, and 3 respectively.

If construction of any one of the three Baghouses is not completed by within thirty-six (36) months after the Effective Date of this Decree NPC may, in its discretion, shut down and cease the operation of any one of the Units not operating a Baghouse at the Facility. NP C may, at its discretion, recommence operation of a Unit shutdown pursuant to this paragraph, provided that construction of a baghouse for the Unit is complete and the baghouse is operational.

If NPC does not receive approval from the PUCN for the inst allation and operation of the Baghouses for Units 1-3 in its Integrated Resource Plan, NPC may, in its sole discre tion, choose to decommission Units 1-3. If NPC chooses to decommission Units 1-3 pursuant to this Paragraph, the following shall apply:

i. NPC shall notify the EPA and NDEP in writing, pursuant to Section XVI (Notices), that it intends to decommission
Units 1-3 no later than November 30, 2007, or within one year of the PUCN decision on NPC’s Integrated
Resource Plan, whichever is sooner; and ii. NPC shall shut down and permanently cease oper ation of Units 1-3 on or before November 30, 2008.”

3. Monitoring, Recordkeeping and Reporting . NPC shall comply with the monitoring, recordkeeping, and reporting requirements set forth in the Operating Permit.

4. SO 2 Limitations and Operating Permit Modification a. Beginning on the Effective Date of the Decree, measured separately , Units 1, 2 and 3 shall not have SO 2 emissions in excess of 0.40 LB/MMBtu, based on a 10-day rolling average period. b. Compliance with the SO 2 emission limitations in this Paragraph shall be demonstrated with SO 2 CEMS and the procedures established in the appropria te section of NPC’s Operating Permit. c. In accord with Section XII (Permits), NPC shall modify its Operating Permit to include the SO 2 emissions limitations required by this Paragraph.



## *********End of Schedules of Compliance**************

### STATE OF NEVADA

BURE AU OF AIR POLL UTION CONTROL 

# Facility ID NO. A0379 Permit NO. AP4911-0897

CLASS I AIR QUALITY OPERATING PERMIT

SPECIFIC REQUIREMENTS

Issued to: N e vada Pow er Company—Reid Gardn er Statio n Pow er Plant, as Permittee



## Section X. Amendments

A. June 18, 20 0 7 – Permittee ’ s Mino r Revi sion Appli c ati on req u e s ting installation of Rotating Op posed Fired Air (ROFA)

comb ustio n system on Steam Boiler Uni t #4 (B-04 ) to redu ce NOx emission s [re f er to Minor Revision Appli c ation

received on March 19, 20 07; addition al submittals d a ted Ap ril 19, 2007; and su bse que nt emails date d April 28 and 30, 2007].

B. March 17, 20 08 – Permit revision s are made pu rsua nt to a Stat e-issued o r de r a nd a Co nsent Decree e n tered between NPC, NDEP-BAPC and the United States En vironmental Protection Agency on Apr il 3, 2007, which was entered by the

United States Distri ct Cou r t on Jun e 14, 2007.

C. Dec e mber 1 9 , 2008 – Permit revision made for S2. 004 – Pursu a n t to 40 CFR 76.7, Revised NOx Emissi o n Limitations

for Gro up 1, Phase II Boilers, the NOx emission limit for ca len d a r years 2 008 a nd 200 9 revised to read 0. 46 lb/MMBtu.

This permit:

1. Is non-tr ans f erable. (NAC 445B.2 87) P a rt 70 Progr am
2. Will be posted conspicuousl y at or near the stationar y source. (NAC 445B.318)(S tate Onl y Requirement)

3. Will expire and be subject to ren e w a l fiv e (5) y ears from April 22, 2004 . ( N A C 44 5B .3 1 5 ) Part 70 Program

4. A completed application for ren e w a l of an oper a ti ng permit must be su bmitted to the d i rector on th e form

prov ided b y him w i th the appropria te fee at leas t 1 80 calend a r da y s before the ex piratio n date o f thi s opera ting permit. (NAC 445B.3 23.2) Part 70 Program

5. An y part y aggriev e d b y the Depa rtm e nt’s de cisio n to issu e th is permit ma y appeal to the Sta t e En v i ronmental

Commission (SEC) w i thi n ten da y s after the d a te of not ic e of the Dep a r t ment’s a c ti on. (NRS 44 5B.34 0 )(Sta t e Only Requirement)

THIS PERMIT EXPIRES ON: April 22, 200 9

Signature

Issued b y : Matthew A. DeBurle, P.E. Supervi sor, Class I Permitting Bran ch

Bureau of Air Pollution Control

Phone: (775 ) 68 7-9 3 91 Date: Dec e mber 1 9 , 2008

X- 1Class I Non-Permit Equipment List

Appended to #AP4911-0897

The Bureau of Air Pollution Control, Nevada Division of Environmental Protection only has air pollution regulatory authority over the fossil fuel fired boilers and supporting equipment at this facility. All other emission units fall under the purview of the Clark County, Department of Air Quality Management.

Unit #1&2 Emergency Diesel Generato r (#G-01) Make = Detroit Williams

HP = 335 HP

KW = 250 KW

Fuel = Diesel Hours of Operation = < 100 Hours Unit #3 Emergency Diesel Generator (#G-02) Make = Waukesha

HP = 168 HP

KW = 125

Fuel = Diesel Hours of Operation = < 100 Hours Unit #4 Emergency Diesel Generator (#G-03) Make = Waukesha

HP = 335 HP

KW = 250 KW

Fuel = Diesel Hours of Operation = < 100 Hours Units 1-3 Coal Yard A/G Diesel Tank (#T-01) 10,000 gallons. 1985 Unit #4 Coal Yard A/G Diesel Tank (#T-02) 10,000 gallons. 1985 (2) Site Motor Vehicle Diesel Tanks (#T-04) 500 gallons. 1985