AQ_F_0400056_20131206_ST_RvwLtr

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Air Quality
Pat McCrory Sheila C. Holman John E. Skvarla, III
Governor Director Secretary
6 December 2013
Mr.Rodney Myers
Managing Director,Engineering and Operations Services
Piedmont Natural Gas,Inc.
Post Office Box 33068
Charlotte,North Carolina 28233
SUBJECT: Central Office Review of Source Test Result-Source ID No. EG-01
Air Quality Permit No. 10097R00
Piedmont Natural Gas,Inc. -Wadesboro
Wadesboro,North Carolina,Anson County
Facility ID: 0400056 Fee Class: Title V
Dear Mr. Myers:
The Division has reviewed your source test report that was received by our Central Office on
2 July 2013. This report was from nitrogen oxides,carbon monoxide,and volatile organic compound
testing of natural gas-fired emergency generator EG-01,which was conducted on 21 May 2013. On
12 November 2013,this Division determined that the subj ect testing performed at your facility was an
acceptable source test. The review indicates that compliance with Air Permit No. 10097R00 is
indicated for this source. A copy of the determination memorandum issued by Mr.David Hughes,of
the N.C. Division of Air Quality, Stationary Source Compliance Branch, is attached.
Should you have any questions regarding this matter, please contact Mr. Neil Joyner,
Environmental Specialist, at(910)433-3300, in the Fayetteville Regional Office.
S' erely,
L)P_
-e Steven F. Vozzo
Regional Air Quality Supervisor
Fayetteville Regional Office
SFV\caj
Attachment: DAQ RCO review(1),dated 12 November 2013 [2013-071 ST]
cc: ❑ FRO Files(w/attachments)
Fayetteville Regional Office—Division of Air Quality
225 Green Street,Suite 714,Fayetteville,North Carolina 28301-5095
Main Phone: [phone]\DAQ Fax:[phone] \ Internet: http://www.ncair.org
An Equal Opportunity\Affirmative Action Employer—Made in part by Recycled Paper

- i L3
DIVISION OF AIR QUALITY
November 12,2013
MEMORANDUM DEAR-WETTEvir �ria,t
To: Steven Vozzo,Fayetteville Regional Office r
From: David B.Hughes, Stationary Source Compliance Branch(SSCB)
Subject: . Piedmont Natural Gas,Inc.—Wadesboro Compressor Station
Wadesboro,Anson County,North Carolina
Nitrogen Oxides,Carbon Monoxide and Volatile Organic Compounds
Emissions Testing on One Generator ID No.EGO
Air Permit No. 10097ROO'Facility ID 04/00056
Conducted May 21,2013
Tracking No.2013-071 ST
The report of the subject testing has been reviewed and deemed acceptable. The testing was performed by Air-Tech
Environmental,LLC in accordance with the requirements of Air Permit No. 10097ROO specific limitations and conditions
2.2-A.2. During testing,the nitrogen oxides (NOO, carbon monoxide (CO) and volatile organic compounds (VOC)
emissions for the generator were demonstrated to be below the applicable emission limits.
The source that was tested is one four-stroke lean bum natural gas-fired emergency generator ID No. EGOL The
generator is subject to 15A NCAC 2D.1100 Control ofToxic AJr Pollutants and 40 CFR Part 60 Subpart JJJJ National
Emissions Standardsfor Hazardous Air Pollutants For Stationary RectorocatingInternal Combustion Engines.Thetest
results for NO.,CO and VOC are tabulated in the table below:
Piedmont Natural Gas—Generator EGO1 Method 7E,10 and Method 18/25A Emissions:
Nitrogen Oxides 1.5 -hr 2.0 -hr Yes
99 ppmvd P 15%02 160 ppmvd @ 15%OZ Yes
Carbon Monoxide 1.6 g/H -hr 4.0 -hr 15A NCAC 2D.1100 Yes
168 pprnyd @ 15%02 540 p.pmvd 15%OZ 40 CFR 60 Subpart JJJJ Yes
Volatile Organic 0.14 g/H -hr 1.0 -hr Yes
Compounds 26 ppavd a 15%02 86 mvd @ 15%OZ Yes
g/Hp-hr—gram per horsepower hour
ppmvd @ 15%02—parts per million at 15%Oxygen
The total VOC emissions were determined using Method 25A and the methane and ethane emissions by Method 18.
Since methane and ethane are exempt per 40 CFR 5 1.100 Definitions for VOC the values may be subtracted out from the
Method 25A VOC test results.
Generator ESOl'is rated at 804 brake horsepower(BHP). The highest achievable load during testing was 738 BHP
(92%). Therefore,the performance test meets the requirement ofbeing within 10 percent of 100 percent peak load(40
CFR 60.4244(a)).
The subject test results are considered an acceptable demonstration of compliance with the applicable NO., CO, and
VOC emission limits. If I can provide further assistance on this matter, please feel free to contact me at
[e-mail] or(919)707-8411.
cc: Central Files Anson County
Gregory Reeves—Fayetteville Regional Office
IBEAM Documents—0400056(05/21/13)