AQ_F_2100073_20141120_ST_ProtRvw

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North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, 111
Governor Secretary
November 20, 2014 Chowan County
Erik R. Wiborg
Facilities Manager
P. 0. Box 49
Edenton,NC 27932
Subject: Regulator Marine,Edenton, Chowan County
Air Permit No. 07132T11
Facility ID 2100073
Proposed Emissions Testing of Diesel Fired Generator(Source ID I-4)
Proposed Test Date: November 25, 2014
Tracking No. 2014-243ST
Dear Mr. Wiborg:
DAQ has reviewed the proposed carbon monoxide(CO)testing of the diesel generator in the protocol
submittal form(PSF)submitted for the above referenced source. Diesel Engine I-4 is rated at 0.312 million
Btu per hour(mmBtu/hr)with a 500 kW generator. The applicable regulation is 40 CFR 63 Subpart 7777
(47)National Emissions Standards for Hazardous Air Pollutants for Stationary Reciprocating Internal
Combustion Engine(RICE). The engine is classified as new under the regulations. Emissions are controlled
by catalytic oxidizer. The PSF is acceptable as discussed below.
The purpose for testing is to demonstrate compliance with 40 CFR 63 Subpart 47. The subpart requires that
the control device(catalytic oxidizer)reduction efficiency is greater than or equal to 70%according to Table
2 in the regulation.
DAQ approves the testing protocol for Regulator Marine with the following conditions:
1) EPA Reference Method 10 is acceptable to sample for CO. Simultaneous inlet and outlet
testing is required. Continuous sampling is required per the method during each run.
2) EPA Reference Method 3A shall be used to measure oxygen(02)simultaneously with the
CO measurements.
3) Use a consistent parameter monitoring frequency interval throughout the test.
a) Catalytic oxidizers-use inlet and outlet oxidizer pressure or differential pressure
instruments that will be used for required routine monitoring. The protocol indicates
these will be recorded every five(5)minutes.
1641 Mail Service Center,Raleigh,North Carolina 27699-1641
Phone:[phone] Internet:www.ncdenr.gov
An Equal Opportunity 1 Affirmative Action Employer—Made in part by recycled paper

Mx. Erik Wiborg
November 20, 2014
Page 2
b) Catalytic oxidizer inlet temperatures—continual recording using calibrated/verified
station instrument every five(5)minutes beginning at the start of the test.
c) Brake horsepower(load)during testing shall be documented. It should be recorded at
least every five(5)minutes beginning at the start of each test run.
4) Since monitoring of inlet temperature and oxidizer differential pressure is required by the
permit and is routinely performed using station instrumentation,this station instrumentation
must be used during compliance testing to obtain the inlet temperature and differential
pressure to be reported in the test report. These station instruments should be periodically
calibrated.(e.g.once per year)to ensure proper indication.
Table 1: Approved Test Methods for CO Testing,Date:November 25, 2014
Number
Target Proposed Test of Test Test Run #of Sampling
Pollutant Method Runs Duration Points Comments
CO EPA Method 10 3 60
Single point Inlet and outlet
02 EPA Method 3A 3 60
Notes: Inlet and outlet conditions must be sampled simultaneously
CO and 02 at inlet and outlet location must be measured concurrently.
EPA Method l not required at small 6 inch inlet ducts per EPA RICE MACT rule modification.
Testing must be conducted at fill normal load f 10%rather than nameplate full load. Per your request,DAQ is
granting your request for this test condition as representative of normal load conditions commensurate with
electrical demand. Document the test load conditions in the test report and additional documentation to
demonstrate that this load was representative. DAQ understands that a permit modification will be sought to
reflect these testing conditions.
If you have questions,please contact me at(919) 707-8413 or gary.saunderspnedenr.gov.
Sincerely, --
Gary L. Saunders
Environmental Engineer
cc: Rob fisher,Washington Regional Office
Central Files, Chowan County
IBEAM Documents