AQ_F_1800462_20220408_CMPL_InspRpt

NORTH CAROLINA DIVISION OF Mooresville Regional Office
AIR QUALITY Midstate Contractors,Inc.
NC Facility ID 1800462
Inspection Report County/FIPS: Catawba/035
Date: 04/08/2022
Facility Data Permit Data
Midstate Contractors,Inc. Permit 08115/R08
2260 Indian Trail Issued 8/21/2014
Newton,NC 28658 Expires 7/31/2022
Lat: 35d 37.8594m Long: 8ld 12.7206m Class/Status Synthetic Minor
SIC: 2951 /Paving Mixtures And Blocks Permit Status Active
NAILS: 324121 /Asphalt Paving Mixture and Block Manufacturing Current Permit Application(s)Renewal
Contact Data Program Applicability
Facility Contact Authorized Contact Technical Contact SIP
Raymond Lovins James Abernethy Raymond Lovins NSPS: Subpart I
Plant Manager President Plant Manager
[phone] [phone] [phone]
Compliance Data
Comments:
Inspection Date 04/08/2022
Inspector's Name Jim Vanwormer
Inspector's Signature: Operating Status Operating
�tirrr ,asr .e2sae� 193.E Compliance Status Compliance-inspection
Action Code FCE
Date of Signature:4/18/2022 Inspection Result Compliance
Total Actual emissions in TONS/YEAR:
TSP S02 NOX VOC CO PM10 *HAP
2021 3.23 0.0100 1.48 2.74 7.56 1.84 364.00
2013 0.8200 --- 0.4800 0.9000 2.47 0.5200 119.00
*Highest HAP Emitted(in pounds)
Five Year Violation History:None
Date Letter Type Rule Violated Violation Resolution Date
Performed Stack Tests since last FCE:None
Date Test Results Test Method(s) Source(s)Tested

Midstate Contractor's,Inc.
April 8,2022
Page 2
Type Action: X Full Compliance _Partial Compliance _Complaint Other:
Evaluation Evaluation/Reinspection Investigation
Data Date submitted for initial review 4/12/2022 _IBEAM INFO,WARNING/OB,NOD,NOV,NRE
Tracking: X IBEAM Document
X IBEAM Inspection,list date inspected _IBEAM LAT/LONG,Facility Locked
X IBEAM Inspection,list date draft is submitted X IBEAM LAT/LONG,Coordinates checked
X IBEAM Inspection,pollutants/programs checked IBEAM Complaint
X IBEAM Planning,Next Inspection Date_4/l/2023
Directions: From MRO,travel Hwy. 150 west toward Lincolnton. Turn right onto Hwy. 16 north.
Travel approximately 9 miles and turn left onto Smythe Farm Road. Travel approximately 3 miles and
the facility is located on the left.
Safety Equipment: Safety glasses,hardhat and safety shoes are recommended.
Safety Issues: None noted
Lat/Long Coordinates: A review of the facility's coordinates on "Maps of DAQ Regulated Facilities"
indicates the facility's latitude and longitude coordinates are accurate and are not locked in IBeam.
Email Contacts: IBEAM email contacts were verified.
1. The purpose of this site visit was to conduct a routine air quality inspection. This facility is a
drum-mix asphalt plant. The facility is currently operating forty hours per week,with production
of asphalt during approximately 20 hours a week. The facility typically shuts down for 4-6 weeks
between mid-January and mid-March depending on weather conditions. I arrived at the facility
with Emily Supple at 9:00 am and met with Mr. Raymond Lovins, Plant Manager, who
accompanied us during this inspection.
2. Facility Contact Information:
During the inspection,I verified the facility contact information in IBEAM.
3. Compliance history file review:
No problems have been noted in the last five years by DAQ. The current compliance status is
discussed in the following sections.

Midstate Contractor's,Inc.
April 8,2022
Page 3
4. Observations of permitted air emission sources and control devices:
Emission Emission Source Control Control System
Source ID Description I System ID Description
ES1 (NSPS) natural gas-fired hot CD I, CD2 cyclone(112 inches in
drum-mix asphalt/RAP diameter) and bagfilter
plant(110 million Btu (11,581 square feet of
per hour maximum heat filter area) installed in
input rate, 350 tons per series
hour maximum capacity)
Observed. At the time of the inspection the plant was operating. There were no visible emissions
observed other than steam from the drum.
Emission Emission Source Control Control System
Source ID Description System ID Description
F14 RAP screen(200 tons per N/A N/A
hour maximum capacity)
Observed.The RAP screen was operating with no visible emissions observed.
Emission Emission Source Control Control System
Source ID Description System ID Description
F18 RAP crusher(50 tons per N/A N/A
hour maximum capacity)
Observed.The RAP crusher was operating with no visible emissions observed.
Emission Emission Source Control Control System
Source ID Description System ID Description
F15 Three(3)RAP
conveyors(200 tons per N/A N/A
hour maximum capacity
each)
Observed. All 3 RAP conveyors were operating with no visible emissions observed.

Midstate Contractor's,Inc.
April 8,2022
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5. Observations of insignificant air emission sources and control devices listed on the current
>l ermit:
Source Exemption Source of Source of Title V
Regulation TAPs? Pollutants?
I-FI I -liquid asphalt tank(30,000 gallons MQ .0102 yes Yes
capacity) (c)(1)(L)(xii)
I-F12 -liquid asphalt tank(30,000 gallons M ) .0102 yes Yes
capacity) (c)(1)(L)(xii) _F
I-ES3 -natural gas-fired burner(0.5 million M)(2)(B)(i)(l) —F
.0102 yes Yes
Btu per hour maximum heat input rate)
I-ES2 -natural gas-fired burner(0.8 million M
.0102Btu per hour maximum heat input rate) 2)(B)(i)(n Yes Yes
Observed. Each burner is attached to an asphalt tank to keep the material warm prior to injection
into the mixing drum. At the time of inspection, the burners were operating. There were no
emissions observed from the process.
Source 7Rxelg
emption Source of Source of Title V
ulation TAPS? Pollutants?
1-17 13 -one (1)No. 2 fuel oil storage tank 2Q .0102
(20,000 gallons capacity) (c)(1)(D)(i) Yes Yes
Observed. The storage tank had been disconnected from the asphalt drum. The fuel is used for
vehicles only, it is filled twice a year and records are kept by the facility. There were no
emissions observed.
Source Exemption Source of Source of Title V
Regulation TAPS? Pollutants?
I-F17 -RAP feeder bin(200 tons per 2Q .0102
hour maximum capacity) �(c)(2)(E)(i) No Yes
Observed. The feeder bin was in operation with no visible emissions.
Source F-Exemption Source of Source of Title V
Regulation TAPS? Pollutants?
I-F9 -hot-mix asphalt storage silos(200 12Q .0102
tons) (c)(1)(L)(xii) No No
I-F7 -drum main conveyor(525 tons per 2Q .0102
hour maximum capacity) (c)(2)(E)(i) No Yes
Observed. At the time of the inspection, the plant was operating with no emissions observed
other than steam from the asphalt.

Midstate Contractor's,Inc.
April 8,2022
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6. Observations of air emission sources and control devices not listed on the current permit:
a. None noted.
7. Compliance with specific permit conditions and limitations:
a. Condition A. 2. "Permit Renewal and Emission Inventory Requirement" states that at
least 90 days prior to the expiration date of this permit,the Permittee shall request permit
renewal by letter with AA application form and submit air pollution emission inventory
report with certification sheet for 2021 calendar year to MRO DAQ.
Observed. The facility has a permit that expires on July 31, 2022,they have submitted
their renewal application on time and was received on February 14, 2022. Compliance
with this stipulation is indicated.
b. Condition A. 3. 15A NCAC 2D .0506, "Particulates from Hot Mix Asphalt Plants" states:
i. Particulate matter emissions resulting from the operation of a hot mix asphalt
plant shall not exceed allowable emission rates.
ii. Visible emissions from stacks or vents at a hot mix asphalt plant shall be less
than 20 percent opacity when averaged over a six-minute period.
iii. Fugitive dust emissions shall be controlled as required by 15A NCAC 2D .0540
"Particulates from Fugitive Dust Emission Sources."
iv. Fugitive emissions for sources at a hot mix asphalt plant not covered elsewhere
under this Rule shall not exceed 20 percent opacity averaged over six minutes.
Observed. At the time of this inspection,the plant was in operation. No visible
emissions were observed other than steam. Compliance with this stipulation is indicated.
C. Condition A.4. 15A NCAC .0516, "Sulfur Dioxide Emissions from Combustion Sources"
states that the facility cannot burn fuel with sulfur dioxide emissions from the combustion
sources shall not exceed 2.3 pounds per million Btu heat input.
Observed. The facility operates solely on natural gas,compliance with this stipulation is
indicated.
d. Condition A.5. 15A NCAC .0521, "Control of Visible Emissions." The facility is limited
twenty percent opacity.
Observed. At the time of this inspection,the plant was in operation with no visible
emissions other than steam. Compliance with this condition is indicated.
e. Condition A. 6. 15A NCAC 2D .0524, "New Source Performance Standards." NSPS
Subpart I. The facility must comply with all applicable provisions,including the
notification,testing,reporting,record-keeping and monitoring.

Midstate Contractor's,Inc.
April 8,2022
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Observed. The facility has complied with applicable NSPS requirements. Testing was
conducted on June 11-12, 2019 for total particulate matter(PM) and on June 17,2019 for
opacity. Test results were received by the Mooresville Regional Office on July 11, 2019
indicating 0.4% visible emissions and PM emissions of 6.7 g/dscm (limit 90 gr/dscm).
The test results were reviewed and approved by the SSCB on October 29, 2019.
Compliance with this condition is indicated.
f. Condition A.7. 15A NCAC 2D .0535, "Notification Requirement." The permittee of a
source of excess emissions that last for more than four hours and that results from a
malfunction, a breakdown of process or control equipment or any other abnormal
conditions, shall notify the Director or his designee of any such occurrence by 9:00 a.m.
Eastern time of the Division's next business day of becoming aware of the occurrence.
Observed. Based on a records review and a conversation with Mr. Lovins, no excess
emissions have occurred at the facility. Compliance with this stipulation is indicated.
g. Condition A.8. 15A NCAC 2D .0540, "Particulates from Fugitive Dust Emission
Sources." The Permittee shall not cause or allow fugitive dust emissions to cause or
contribute to substantive complaints or excess visible emissions beyond the property
boundary.
Observed. The MRO has not received any complaints regarding the facility and no
fugitive dust emissions were observed at the time of this inspection. Compliance with
this condition is indicated.
h. Condition A.9. 15A NCAC 2D .0605, "Testing Requirement." The facility is required to
conduct PM emission testing on the drum-mix asphalt/RAP plant (ID No. ES1) and
submit two (2) copies of the results to DAQ by September 30, 2020. The facility is also
required to submit a testing protocol to DAQ at least 45 days prior to testing for approval.
Observed. Testing was conducted on June 11-12, 2019 for total particulate matter(PM)
and on June 17, 2019 for opacity. Test results were received by the Mooresville
Regional Office on July 11, 2019 indicating 0.4%visible emissions and PM emissions of
6.7 g/dscm(limit 90 gr/dscm). The test results were reviewed and approved by the SSCB
on October 29, 2019. The next test will be due by June 2029. Compliance with this
condition is indicated.
i. Condition A.10. 15A NCAC 2D .0611, "Fabric Filter Requirements." The facility is
required to conduct an annual internal inspection of the fabric filter system and record the
results of this inspection and any maintenance performed in a fabric filter log book.
Observed. The facility conducts periodic inspections of the fabric filter system and
records the results in a fabric filter log book. The last two internal inspections were
conducted on October 30,2021 and December 4,2020. Compliance with this condition is
indicated.
j. Condition A.11. 15A NCAC 2D .0611, "Cyclone Requirements." The facility is required
to conduct an annual inspection of the cyclone system and record the results and any
maintenance performed in a cyclone log book.

Midstate Contractor's,Inc.
April 8,2022
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Observed. The facility conducts periodic inspections of the cyclone system and records
the results in a log book. The last two internal inspections were conducted on October
30,2021 and December 4,2020. Compliance with this condition is indicated.
k. Condition A.12. 15A NCAC 2D .1806, "Control and Prohibition of Odorous Emissions."
Control odors properly.
Observed—The MRO has not received any odor complaints concerning the facility, and
no odors were noted outside the facility at the time of this inspection. Compliance with
this condition is indicated.
1. Condition A.13. 15A NCAC 2Q .0501, "Synthetic Minor Facilities." Facility-wide
emissions of CO shall be less than 100 tons per consecutive 12-month period. To comply
with the permit limit, the production of hot-mix asphalt shall be less than 1,490,941 tons
per consecutive 12-month period. The facility shall record monthly and total annually the
total asphalt produced. Within 30 days after each calendar year,the facility is required to
submit an annual report to DAQ containing the total amount of hot-mix asphalt produced
during the previous 12 months and the facility-wide CO emissions for the previous 12
months.
Observed - The facility is maintaining daily and monthly records of asphalt production.
The required annual report for calendar year 2021 was received by the Mooresville
Regional Office on January 30, 2022, indicating compliance with the permit limits. The
report showed total asphalt production of 114,050.17 tons with resulting CO emissions of
7.41 tons. Compliance with this condition is indicated.
8. NSPS/NESHAP Review
The drum mixer at the facility is subject to 40 CFR Part 60 Subpart 1. There are no boilers,
emergency generators,or gasoline tanks at the facility.
9. Summary of changes needed to the current permit:
The RAP crusher and associated screen and conveyors will be removed. The facility pays a
contractor to crush the bulk piles of RAP. The material that goes into the RAP crusher has
already been crushed, the device simply breaks up the clumps that have formed in the RAP pile
due to heat and rain. The yellowsheet has been updated.
10. Compliance assistance offered duringtpection:
None.
11. Section 112(r) gpplicabilitX:
This facility does not appear to be subject to the requirements of the Chemical Accident Release
Prevention Program, Section 112(r)of the Clean Air Act.

Midstate Contractor's,Inc.
April 8,2022
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12. Compliance determination:
Based on my observations, this facility appeared to be in compliance with the applicable air
quality regulations at the time of the inspection.
JRV:lms
c: MRO File
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