AQ_F_1000101_20190530_CMPL_InspRpt

NORTH CAROLINA DIVISION OF Wilmington Regional Office
AIR QUALITY Ready Mixed Concrete Company- Shallotte
NC Facility ID 1000101
Inspection Report County/FIPS: Brunswick/019
Date: 05/30/2019
Facility Data Permit Data
Ready Mixed Concrete Company- Shallotte Permit n/a
4987 Industrial Drive Issued n/a
Shallotte,NC 28470 Expires n/a
Lat: 33d 59.9760m Long: 78d 27.1580m Classification Permit Exempt
SIC: 3273 /Ready-Mixed Concrete Permit Status Inactive
NAICS: 32732/Ready-Mix Concrete Manufacturing Current Permit Application(s)None
Contact Data Program Applicability
Facility Contact Authorized Contact Technical Contact SIP
Duren Shaw Duane Allen Steve Simonsen
Plant Supervisor Division Manager Environmental Manager
[phone] [phone] [phone]
843 495-6313 cell
Compliance Data
Comments: Inspect facility as scheduled.
Inspection Date O5/21/2019
Inspector's Name Scott Sanders
Inspector's Signature: Scott Sanders Operating Status Operating
Compliance Code Compliance- inspection
Action Code FCE
Date of Signature: 5/30/19 On-Site Inspection Result Compliance
/I 9
Total Actual emissions in TONS/YEAR:
TSP SO2 NOX VOC CO PM10 * HAP
2013 0.0400 --- --- --- --- 0.0100 0.0551
2008 0.1700 --- --- --- --- 0.0800 0.0473
* Highest HAP Emitted inpounds)
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

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Ready Mixed Concrete Company—Shallotte
May 30,2019
Directions to the facility are as follows: From Wilmington, take US-17/Shallotte/Myrtle Beach
exit onto Ocean Hwy. E (US-17 S). Go 31.2 miles and take the ramp toward NC-130/Shallotte/
Whiteville. Turn left onto Whiteville Rd. NW(NC-130). Go 3 miles and turn right onto Industrial
Drive. The facility is at the end of the road to the left.
1. Contact was made with Duane Allen, Division Manager, to conduct a compliance assurance visit.
2. On May 21, 2019, the plant was observed operating. Fifty (50) yards of concrete are scheduled to
be produced on this day and one (1) delivery truck is currently running out of this site. This is the
first day the plant has operated and produced any concrete since December 9, 2015. Records
indicate that this facility has not operated since then. 4,484 yards of concrete were produced here
in CY 2015. Mr.Allen indicted during the inspection that the Wilmington Division of Ready Mixed
Concrete recently took back the oversight of this plant. The Myrtle Beach Division of Ready Mixed
Concrete has had oversight of this plant for the last seven to eight years. Mr. Duane Allen will be
the new authorized contact for the facility. Duron Shaw, Plant Supervisor, will be the new facility
contact for the facility. The plant telephone number is now 910.729.6639. IBeam has been updated
to reflect these changes. Mr. Allen also noted that Sam Owens (910.599.2892) recently replaced
Mike Setzer as the new Operations Manager for the Wilmington area. Mr. Allen indicated that
plans are to have this plant operating 5 days per week soon and to have 6 to 8 delivery trucks
working out of this site soon as well. No silo loading or truck mix loading was observed during the
inspection.
3. Ready Mixed Concrete Company — Shallotte operates a concrete batch plant that consists of one
split storage silo (60%cement and 40%flyash), one weigh hopper,and one truck loading operation.
A central ground level dust collector is present.
4. The following equipment was contained in Permit No. 08859R06:
Emission FEmission Source Control Control System
Source ID Description System ID Description
One Concrete Batch Plant-Truck Mix -with 110 cubic yard/hour maximum capacity
ES-1 one split storage silo with CD-1 one ground level central dust
60 %cement collector(1,433 square feet of
surface area); closed-loop
system with emissions
returned to the flyash silo
ES-2 one split storage silo with CD-1 one ground level central dust
40 % flyash collector(1,433 square feet of
surface area); closed-loop j
system with emissions
returned to the flyash silo
ES-3 one weigh hopper CD-1 one ground level central dust
collector(1,433 square feet of
surface area); closed-loop
system with emissions
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Ready Mixed Concrete Company—Shallotte
May 30,2019
Emission Emission Source Control Control System
Source ID Description System ID Description j
rreturned to the flyash silo
ES-4 one truck-loading CD-1 one ground level central dust
operation collector(1,433 square feet of
surface area); closed-loop
system with emissions
returned to the flyash silo
5. Applicable regulations for Ready Mixed Concrete Company—Shallotte are as follows:
2D .0202 "Permit Renewal and Emission Inventory Requirement"
2D .0515 "Particulates from Miscellaneous Industrial Processes"
2D .0521 "Control of Visible Emissions"
2D .0535 "Excess Emissions Reporting and Malfunctions"
2D .0540 "Particulates from Fugitive Dust Emission Sources"
2D .0611 "Monitoring Emissions from Other Sources (Fabric Filter
Requirements)"
2Q .0711 "Emission Rates Requiring a Permit"
6. An air permit modification was done on March 16, 2010 added a central ground level dust collector
replacing four separate bagfilters at this facility. This project was part of an overall Green Star
Program. The goals of this program included energy conservation and recycling efforts. The new
central ground level dust collector began operating on April 19, 2010.
Air permit renewal done on November 20, 2014 was requested and processed with no changes to
I
the permit.
On August 16, 2016, this facility requested rescission of the current air permit under the newly 2Q
.0102(d) exemption. Since the 2013 CY emissions did not exceed 5 tons per year each for PM10,
S02, CO,NOx,VOC,HAP,or TAP and aggregate total emissions did not exceed 10 tons per year,
the facility qualified for exemption from permitting under 2Q .0102(d). The rescission request was
granted by WiRO DAQ on September 9, 2016. This associated paperwork was attached to the last
inspection report for reference.
7. Maintenance is performed on the dust collector on a regular basis when this plant is operating.
Maintenance records are kept on site for reference. The bags in the dust collector (72 total) were
all last changed out on September 7, 2015. This is the first time the bags in the dust collector have
needed to be changed out since the dust collector was installed in April 2010. This plant has
operated very little since then. When operating, plant personnel log a daily reading on the
magnahelic gauge associated with the dust collector to ensure proper pressure is maintained in the
unit. A reading between 2 and 3 indicates good pressure. Plant personnel also log daily visual
inspections as to whether the unit is dusting or not. During the loading of the silos,delivery pressure
from the truck should be kept at a minimum to avoid bag failure. This plant operates their trucks
at a delivery pressure no greater than ten (10) pounds per square inch. An increase in pressure
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Ready Mixed Concrete Company—Shallotte
May 30,2019
above this limit could cause a bag failure.
S. 5-year compliance history—No NOD's, NOV's, or NRE's have been issued to this facility in the
last five years.
9. Ready Mixed Concrete Company — Shallotte was operating in compliance with Air Quality
regulations at the time of the inspection.
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