AQ_F_0400056_20160805_ST_ProtRvw

PAT MCCRORY
Governor
1:
DONALD R. VAN DER VAART
Seaelary
Air Quality SHEILA C. HOLMAN
ENVIRONMENTAL QUALITY Director
August 5, 2016
Mr. Gil Vinzani
Piedmont Natural Gas Company
150 Fayetteville Street, Suite 570
Raleigh,North Carolina 27601
Subject: Piedmont Natural Gas-Wadesboro Compressor, Wadesboro, Anson County
Air Permit No. 10097T01
Facility ID 0400056
Proposed Emissions Testing at Natural Gas Engines ID COMPO I-COMP04
Proposed Test Date: August 17-19, 2016
Tracking No. 2016-182ST
Dear Mr. Vinzani:
DAQ has reviewed the proposed testing of the four 4-stroke lean burn(4SLB) natural gas
compressor engines in the protocol submittal form (PSF). Each 4SLB compressor engine is
rated at 4,735 hp. The purpose of the testing is to conduct the required periodic emissions testing
on COMPOI through COMP04. The PSF is acceptable as discussed below.
Applicable regulations for the compressor engines include:
• 40 CFR 63 Subpart ZZZZ National Emissions Standards for Hazardous Air Pollutants
for Stationary Reciprocating Internal Combustion Engines
• 40 CFR 60 Subpart JJJJ Standards of Performance for Stationary Spark Ignition
Internal Combustion Engines
40 CFR 60 Subpart JJJJ requires periodic testing once every three years or every 8,760 hours,
whichever occurs first. The testing is being conducted to meet the three-year retesting
requirement since the engines have not reached the 8,760 hour threshold. The pollutants
required to be measured are carbon monoxide (CO), nitrogen oxides (NOX), and non-methane
volatile organic compounds (VOCs). Meeting the emission limits of 40 CFR 60 Subpart JJJJ
fulfill the requirements for 40 CFR 63 Subpart ZZZZ. The methods to be used are summarized
in the table below.
State of North Carolina I Environmental Quality I Air Quality
1641 Mail Service Center 1 217 W.Jones Street,Suite 4000 1 Raleigh,NC 27699-1641
919 707 8400 T

Mr. Gil Vinzani
August 5, 2016
Page 2
Table 1: Approved Test Methods for Testing of COMPO1-COMP04 during August 17-19, 2016
Number Test Number of
Target ! Proposed Test of Test Run Sampling
Pollutant s Method Runs Duration Points Comments
CO ; EPA Method 10 3 60
02 1 EPA Method 3A 3 60 i No. of sampling points
NO,, EPA Method 7E 3 60 1-3 is per
VOC EPA Method 3 60 WE stratification test
25A
For moisture
,Moisture EPA Method 4 3 60 1-3 calculations, correction
to dry standard
CH4 EPA Method 18 3 60 1-3
Correction of THC to
report NMHC
THC=total hydrocarbon; NMHC =non-methane hydrocarbons
The proposed test methods are acceptable for the specified pollutants. Approval of the protocol
does not exempt the tester from the minimum requirements of the applicable methods, 63
Subpart ZZZZ and 60 Subpart JJJJ requirements. Since no deviations from the applicable testing
methodology were addressed in the test protocol, the testing should be conducted in strict
accordance with the requirements of EPA Methods 2, 3A, 4, 7E, 10, 18, and 25A.
Testing must normally be conducted at full load� 10%. Testing proposed operating process rate of
4,735 hp is acceptable. Documentation of engine load must be provided with the test report. If you
have questions,please contact me at [phone] or gary.saundersCncdenr.gov.
Sincerely,
Gary L. Saunders
Environmental Engineer
NC DEQ, Division of Air Quality
cc: Steven Vozzo, Fayetteville Regional Office
Central Files, Anson County
IBEAM Documents-0400056