AQ_F_1800462_20191106_ST_RvwLtr

ROY COOPER
Governor `
MICHAEL S.REGAN
Secretary .o
MICHAEL ABRACZINSKAS u.,1W
Director
NORTH CAROLINA
Environmental Quality
November 6,2019
Mr.. James Abernethy,President
Midstate Contractors, Inc:
PO Box 1238
Hickory,NC 28603
Subject: Particulate Matter and Visible Emissions Testing of the Hot Drum Mixer(ES1)Performed
on June 11 & 12, 2019
Midstate Contractors, Inc.
Newton, Catawba County,North Carolina
Facility ID No.1800462
Air Permit No. 08115R08
Tracking No. 2019-143ST
Dear Mr. Abernethy,
Particulate matter(PM) and visible emissions testing was performed on the natural gas fired hot
drum mixer(ID No. ES 1) at Midstate Contractors, Inc.;located in Newton, Catawba County,North
Carolina on June 11 and 12, 2019. The test was performed in accordance with the requirements of Air
Permit No. 08115R08, Specific Conditions and Limitations No. A.9.
The Stationary Source Compliance'Branch of the North Carolina Division of Air Quality has
completed a review of the referenced test. It was determined that the testing is an acceptable
demonstration of compliance. Please find enclosed a copy of the test review memorandum.
If you have any questions with reference to this matter,please do not hesitate to contact Ms.Karyn
Kurek, or me at(704) 663-1699.
Sincerely,
Denise Hayes "
Environmental Engineer
KAK-,1he,
Enclosure.
c: MRO File a
https://ncconnect.sharepoint.com/sites/DAQ-MRO/Counties/CATAVY'BA/00462/STK LET 20191106.doe
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'F North Carolina Department of Environmental Quality I Divislon of Alr Quality

NC DEPARTMENT OF
DIVISION OF AIR QUALITY ENVIRONMENTAL QUALITY
October 23, 2019 RECF..►VFD
OCT
MEMORANDUM 2 92019
OORESVILLE RcG►ONAL OFFICE
To: Bruce Ingle,Mooresville Regional Office DIVISION OF AIR QUALITY
From: Shannon Vogel, Stationary Source Compliance Brancho"D
Subject: Midstate Contractors,Inc.
Newton, Catawba County,North Carolina
Facility ID 1800462,Permit No. 08115R08
Total Particulate and Visible Emissions-Testing of Asphalt Plant ES 1
Performed June 11, 12 and 17, 2019 by
Integrity Air Monitoring,Inc.
Tracking-No.-2019-143st-- -
Integrity Air Monitoring performed EPA Methods 5/202 for total particulate matter(PM)on June 11
and 12, 2019 and EPA Method 9 for opacity on June 17, 2019. The test results are acceptable and
demonstrate compliance with the applicable emissions limits.
Emissions Source ES is a natural gas-fired hot drum mix asphalt/RAP plant with at 350 tons per hour
permitted maximum capacity. Emissions from ES are controlled by cyclone CD and bagfilter CD2
installed in series. The reported rate during the June 2019 testing was 228 tons per hour(tph).
15A NCAC 2D .0506 Particulates From Hot Mix Asphalt Plants, 15A NCAC 2D .0521 Control of
Visible Emissions, and 40 CFR 60 Subpart I Standards of Performance for Hot Mix Asphalt Facilities
apply to ES 1 and limit visible emissions to 20%opacity. 2D .0506 limits total PM based on actual
process rate. The 2D .0506 total PM limit is 53.2 pounds per hour for the tested rate. 40 CFR 60
Subpart I limits filterable PM to 90 milligrams per dry standard cubic meter(mg/dscm). The test results
are tabulated below.
Asphalt Plant ES I—Total PM and VE Testing—June 2019
Pollutant Test Results Emissions Limit Standard Compliance
Filterable PM 6.7 g/dscm 90 g/dscm 60 Subpart I Yes
0.46 lb/hr --- --- ---
- Condensible PM _ 0.49_lb/hr-_ - --- --- - --- --= - --- --- --- - -----_ ----
Total PM 0.951b/hr 53.2 lb/hr 2D .0506 Yes
Visible Emissions 0.4% 20% 60 Subpart I Yes
Highest 6-minute average
Compliance was demonstrated. If you have any questions regarding the results of this review,please
contact me at 919-707-8416 or shannon.vogeIgncdenngov.
cc: Central Files, Catawba County
IBEAM Documents- 1800462