NPPD-Gerald Gentleman Station-Supplemental BART Information for NCS Unit 1 - Attachment B.DOC 

Construction Permit-Page 1 

CONSTRUCTION PERMIT 

PERMIT NUMBER: CP06-0001

PREVENTION OF SIGNIFICANT DETERIORATION (PSD) 

PERMIT TO MODIFY AN 

AIR CONTAMINANT SOURCE 

IS HEREBY ISSUED TO:

Nebraska Public Power District 

PO Box 499 

Columbus, Nebraska 68602-0499 

FOR THE SPECIFIC MODIFICATION OF:

Replacing Unit 1 Existing Burner Equipment System with 

New Low NOx Burner Equipment System including Overfire Air Port System 

TO BE LOCATED AT:

Gerald Gentleman Station 

6089 South Highway 25 

Sutherland, Lincoln County, Nebraska 69165 

 

 Pursuant to Chapter 14 of the Nebraska Air Quality Regulations, the public has been notified by 

prominent advertisement of this proposed modification of an air contaminant source and the thirty (30) 

day period allowed for comments has elapsed. This Construction Permit approves the proposed 

replacement of Unit 1’s existing burner equipment system with new Low NOx burner equipment system 

including overfire air port system. 

 Compliance with this permit shall not be a defense to any enforcement action for violation of an 

ambient air quality standard. 

This permit is issued with the following conditions: 

General Conditions

I. This permit is not transferable to another source or location. (Title 129, Chapter 17) 

II. Holding of this permit does not relieve the owner/operator of the source from the responsibility to 

comply with all applicable portions of the Nebraska Air Quality Regulations and any other 

requirements under local, State, or Federal law. (Title 129, Chapter 41) 
NPPD-Gerald Gentleman Station-Supplemental BART Information for NCS Unit 1 - Attachment B.DOC 

Construction Permit-Page 2 

III. Any applicant who fails to submit any relevant facts or who has submitted incorrect information 

in a permit application shall, upon becoming aware of such failure or incorrect submittal, 

promptly submit such supplementary facts or corrected information. If the source wishes to make 

changes at the facility that will result in change(s) to values, specifications, and/or locations of 

emission points that were indicated in the permit application (or other supplemental information 

provided by the applicant and reviewed by the Department in issuance of this permit), the source 

must receive approval from the Department before the change(s) can be made. In addition, any 

modification which may result in an adverse change to the air quality impacts predicted by 

atmospheric dispersion modeling (such as changes in stack parameters or increases in emission 

rates, potential emissions, or actual emissions) shall have prior approval from the Department. 

The source shall provide all necessary information to verify that there are no substantive changes 

affecting the basis upon which this permit was issued. Information may include, but not be 

limited to, additional engineering, modeling and ambient air quality studies. (Title 129, Chapter 

17, Section 006, 007, & 008) 

IV. Approval to construct, reconstruct and/or modify the source will become invalid if a continuous 

program of construction is not commenced within 18 months after the date of issuance of the 

construction permit, if construction is discontinued for a period of 18 months or more, or if 

construction is not completed within a reasonable period of time. (Title 129, Chapter 17, Section 

012) 

V. The owner/operator of the source shall provide a notification to the Department of the date of 

construction, reconstruction or modification commenced, postmarked no later than 30 days after 

such date, and of the actual date of initial startup of operation, postmarked within 15 days after 

such date. (Title 129, Chapter 17, Section 012 & Chapter 7, Section 002.03) 

VI. The permittee shall allow the Department, EPA or an authorized representative, upon presentation 

of credentials to (Title 129, Chapter 8, Section 012.02): 

 (A) Enter upon the permittee's premises at reasonable times where a source subject to this 

permit is located, emissions-related activity is conducted or records are kept, for the 

purpose of ensuring compliance with the permit or applicable requirements; 

 (B) Have access to and copy, at reasonable times, any records, for the purpose of ensuring 

compliance with the permit or applicable requirements; 

 

 (C) Inspect at reasonable times any facilities, pollution control equipment, including 

monitoring and air pollution control equipment, practices, or operations, for the purpose 

of ensuring compliance with the permit or applicable requirements; 

 (D) Sample or monitor at reasonable times substances or parameters for the purpose of 

ensuring compliance with the permit or applicable requirements. 

VII. Applicable regulations: Title 129 - Nebraska Air Quality Regulations as amended 

March 14, 2006. 

VIII. This permit may contain abbreviations and symbols of units of measure which are defined in 40 

CFR Part 60.3. Other abbreviations may include, but are not limited to, the following: Best 

Available Control Technology (BACT), Code of Federal Regulations (CFR), Compilation of Air 

Pollutant Emission Factors, Volume I, Stationary Point and Area Sources (AP-42), Carbon 
NPPD-Gerald Gentleman Station-Supplemental BART Information for NCS Unit 1 - Attachment B.DOC 

Construction Permit-Page 3 

Monoxide (CO), Continuous Emissions Monitor (CEM), Hazardous Air Pollutant (HAP), 

Hazardous Air Pollutants (HAPs), Low NOx Burners (LNB), Maximum Achievable Control 

Technology (MACT), National Ambient Air Quality Standards (NAAQS), New Source 

Performance Standards (NSPS), Nitrogen Oxides (NOx), Particulate Matter (PM), Particulate 

Matter less than or equal to 10 micrometers (PM10), Prevention of Significant Deterioration 

(PSD), Sulfur Dioxide (SO2), Volatile Organic Compounds (VOC). 

IX. Open fires are prohibited except as allowed by Title 129, Chapter 30. 

X. The source shall not cause or permit fugitive particulate matter to become airborne in such 

quantities and concentrations that it remains visible in the ambient air beyond the property line. 

(Title 129, Chapter 32) 

XI. Application for review of plans or advice furnished by the Director will not relieve the source of 

legal compliance with any provision of these regulations, or prevent the Director from enforcing 

or implementing any provision of these regulations. (Title 129, Chapter 37) 

XII. If and when the Director declares an air pollution episode as defined in Title 129, Chapter 38, 

Sections 003.01B, 003.01C, or 003.01D, the source shall immediately take all required actions 

listed in Title 129, App. I until the Director declares the air pollution episode terminated. 

Specific Conditions 

XIII. Specific terms and conditions of this permit: 

(A) BACT Emissions Limitation for Unit 1. Pursuant to Title 129, Chapter 19, the permittee 

shall adhere to the following requirements, which are deemed by the Department to be 

BACT. All such controls shall be fully functional during emission unit operation except 

as allowed during emission unit startup and shutdown periods. 

(1) Carbon Monoxide (CO): BACT for CO shall be the use of combustion controls 

to maintain a CO emissions limit of 0.50 lb/MMBtu (30-day rolling average). 

The CO BACT limit does not apply during periods of startup and shutdown. 

Malfunctions shall be handled as described in Title 129, Chapter 35. 

(a) The 30-day rolling average calculation shall be conducted as follows: 

(i) The average CO emissions, for each hour, shall be recorded by 

sampling the lb/MMBtu value by completing a minimum of one 

cycle of operation (sampling, analyzing, and data recording) for 

each successive 15-minute period anytime Unit 1 is combusting 

fuel and the monitor is in service and is not malfunctioning or 

being calibrated. Data for startup and shutdown shall not be 

used to calculate the average CO emissions. All data shall be 

reduced as specified in 40 CFR 60.13(h). 

(ii) Daily average CO emission calculations will be calculated by 

taking the summation of the hourly averages, obtained by 

Condition XIII.(A)(1)(a)(i), and dividing by the number of hours 

in which there was a quality assured hourly average, to 

determine the average CO emissions for a particular day. 
NPPD-Gerald Gentleman Station-Supplemental BART Information for NCS Unit 1 - Attachment B.DOC 

Construction Permit-Page 4 

(iii) The 30-day rolling average will be calculated each day by 

summing the daily average CO emission rates for the previous 

30 days and dividing by 30. 

(b) The permittee shall notify the Department, in writing, if any 30-day 

rolling average exceeds the CO emission limit in Condition XIII.(A)(1) 

or if monitored downtime exceeds 5% of unit operating time during a 

quarter. The notifications shall be submitted to the Department within 30 

days of either occurrence. 

(B) The permittee shall demonstrate initial compliance, within 180 days after initial startup of 

Unit 1, with the emissions limit for CO by utilizing the existing CEMS installed on Unit 

1. 

(1) The existing CEMS shall be certified in accordance with 40 CFR 60 – Appendix B – 

Performance Specification 4. 

(2) Daily calibrations on the existing CEMS shall be conducted in accordance with 40 

CFR 60.13 (d)(1). 

(C) By January 15th of each year, the permittee shall calculate the annual average emission rate of 

CO emissions from the previous year shall be conducted according to the method outlined in 

Condition XIII.(C)(1). 

(1) The annual average calculation shall be conducted as follows: 

(a) The average CO emissions, for each hour, shall be recorded by sampling the 

lb/MMBtu value by completing a minimum of one cycle of operation 

(sampling, analyzing, and data recording) for each successive 15-minute 

period anytime Unit 1 is combusting fuel and the monitor is in service and is 

not malfunctioning or being calibrated. Data for startup and shutdown shall 

not be used to calculate the average CO emissions. All data shall be reduced 

as specified in 40 CFR 60.13(h). 

(b) Annual average CO emission calculations will be calculated by taking the 

summation of the hourly averages, obtained in Condition XIII.(C)(1)(a) and 

dividing by the number of hours meeting the criteria described in Condition 

XIII.(C)(1)(a). 

(2) By January 20th of each year, the permittee shall submit to the Department a letter 

containing the annual average calculated in accordance with Condition XIII.(C)(1) 

and information on how the calculated annual average compares to the CO emissions 

limitation. 

(3) If the annual average emissions rate of CO emissions exceed 90% of the CO 

emissions limit, the permittee shall monitor its CO emissions with a CEMS that shall 

be certified and operated in accordance with the following: 

(a) 40 CFR 60 – Appendix B – Performance Specification 4 

(b) 40 CFR 60 – Appendix F 
NPPD-Gerald Gentleman Station-Supplemental BART Information for NCS Unit 1 - Attachment B.DOC 

Construction Permit-Page 5 

The permittee shall have until June 15th of the year it has been determined that 90% of 

the CO emissions limit has been exceeded to install and certify a CEMS in accordance 

with the specifications listed above. The permittee shall continue to monitor its CO 

emissions utilizing the methods in Condition XIII.(B) until the CEMS has been 

certified in accordance with Condition XIII.(C)(3)(a). 

(4) If the annual average emissions rate of CO emissions is less than 90% of the CO 

emissions limit, the permittee shall monitor its CO emissions in accordance with 

Conditions XIII.(C)(3)(a) and (b), or with its existing CEMS that shall be certified and 

operated in accordance with the following: 

(a) The existing CEMS shall be operated in accordance with 40 CFR 60 – 

Appendix B – Performance Specification 4. 

(b) Daily calibrations on the existing CEMS shall be conducted in accordance 

with 40 CFR 60.13 (d)(1). 

(c) A relative accuracy test audit (RATA) shall be performed on the existing 

CEMS each year in accordance with the following requirements: 

(i) 40 CFR 60 – Appendix B – Performance Specification 4 

(ii) Test Protocol: At least 45 days prior to the date of testing, the 

permittee shall develop and submit to the Department a formal 

“Test Protocol” which shall be approved by the Department prior 

to commencement of testing. This “Test Protocol” shall include, 

as a minimum, the following items: 

1. A test plan detailing the methods and procedures that 

will be used for testing; 

2. A test schedule describing the tentative agenda as to 

when testing will occur; 

3. A description as to how testing will determine 

compliance with the permit conditions along with a copy 

of the permit. 

(iii) Pre-Test Notification: The Department shall be notified in 

writing at least thirty (30) days prior to the dates of testing to 

allow the Department the option of witnessing portions of the 

test. 

(iv) Test Methods: Testing shall be done in accordance with 

Nebraska Title 129, Chapter 34 - Emission Sources; Testing; 

Monitoring. 

(v) Final Test Report: A “Final Report” from emissions 

performance testing shall contain, as a minimum, the following 

items: 

1. An executive summary. 
NPPD-Gerald Gentleman Station-Supplemental BART Information for NCS Unit 1 - Attachment B.DOC 

Construction Permit-Page 6 

2. A description of the source testing conditions, including but 

not limited to boiler information including, actual achieved 

firing rate (i.e. MMBtu/hr), quantity of fuel consumed 

(ton/hr), heating value of the fuel, ambient conditions, etc. 

3. Copies of all data sheets from the test run(s). 

4. A description and explanation of any erroneous data or 

unusual circumstance(s) and the cause for such situation. 

5. A final conclusion section describing the outcome of the 

testing. 

6. A copy of the “Final Report,” including test results certified 

by the tester, shall be provided to the Department within 

forty-five (45) days after the completion of the tests. 

(D) Records shall be maintained on-site for a minimum period of five (5) years. These 

records shall be clear and readily accessible to Department representatives and shall 

include the following: 

(1) Copies of all notifications, reports, test results, and plans submitted to the 

Department shall be maintained. 

(2) Recordkeeping as described in 40 CFR 60.7(f). 

 The undersigned issues this document on behalf of the Director in accordance with Title 129 – 

Nebraska Air Quality Regulations. 

8/18/06 {Original Signed} 

_______________________________________ _______________________________________ 

Date Shelley Kaderly 

 Air Quality Division Administrator