AQ_F_1800073_20160926_ST_RvwMemo (8)

DIVISION OF AIR QUAILTY
September 26, 2016
MEMORANDUM
To: Ronald E. Slack,Mooresville Regional Office
From: Brent W. Hall, Stationary Source Compliance BrancA
Subject: Duke Energy Carolinas, LLC,Marshall Steam Station
Terrell, Catawba County,NC
Particulate Emission Compliance Testing on ES-1 and 2 Combined Stack
Air Permit No. 03676T52 Facility ID 18-00073
Conducted July 13, 2016 by Grace Consulting, Inc. (GCI)
DAQ Tracking No. 2016-244ST
GCI performed EPA Method 5 on ES-1 and 2 combined stack to determine filterable particulate matter(PM).
The EPA Method 5 testing was performed according to the approved protocol with an elevated filter
temperature of 320f25°F. The results demonstrate compliance with the applicable regulations.
ES-1 and 2 are two coal/No. 2 fuel oil-fired electric utility boilers,each equipped with a low NO,.concentric
firing system,separated overfire air/lowered fired low-NO,;technologies(SOFA/LOFIR),and alkaline-based
fuel additive and associated selective non-catalytic reduction system(SNCR)NO.reduction system(ID Nos.
CD-lc (UISNCR)/CD-4c (U2SNCR)), sulfur trioxide flue gas conditioning system(ID Nos. CD-2/CD-5),
anhydrous ammonia injection ash conditioning system(ID Nos.CD-2a/CD-5a),electrostatic precipitator(ID
Nos. CD-3/CD-6), and wet flue gas desulfurization system consisting of spray tower absorber(ID Nos. CD-
U1/2 FGD).
15A NCAC 2D .0536 Particulate Emissions From Electric Utility Boilers applies. Units 1 and 2 boilers
combined are limited to an emission rate of 0.20 pounds per million Btu (lb/mmBtu). The results of EPA
Method 5 testing are listed in the table below.
Marshall Steam Station ES-1 and 2 Combined Stack Method 5 Particulate Emissions
Average Maximum
Emission Emission Heat Input Heat Input % of
Emission Rate Limit Rate, Rate, Maximum
Source lb/mmBtu lb/mmBtu mmBtu/hr mmBtu/hr Heat Input Compliance
ES-4 0.009 0.20 6550 8460 1 99.7 Yes
The permitted heat input rate for the combined boilers is 8460 mmBtu/hr. The average heat input rate during
testing was calculated to be approximately 6550 mmBtu/hr(77.4%of the maximum permitted heat input rate).
The subject test results are considered an acceptable demonstration of compliance with the applicable
particulate emission limits. If you have any questions regarding this review, please contact me at
Brent.hall(cncdenr.gov or(919)707-8427.
cc: Central Files-Catawba County IBEAM Documents— 1800073