AQ_F_1400196_20210519_CMPL_CAV-Rpt (4)

1400196 - CANt
NORTH CAROLINA DIVISION OF Asheville Regional Office
AIR QUALITY Kerr's Hickory Ready-Mixed Concrete Co., Inc.
NC Facility ID 1400196
Compliance Assurance Visit(CAV)Report County/FIPS: Caldwell/027
Date: 05/19/2021
Facility Data Permit Data
Kerr's Hickory Ready-Mixed Concrete Co., Inc. Permit n/a
1190 Bradford Mountain Road Issued n/a
Lenoir,NC 28645 Expires n/a
Lat: 35d 53.1840m Long: 8 1 d 33.6550m Class/Status 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
Robert Kerr Robert Kerr Robert Kerr
Vice President Vice President Vice President
[phone] [phone] [phone]
Compliance Data
Comments:
CAV Date 05/19/2021
Inspector's Name Bob Graves
Inspector's Signature: °` � Operating Status Operating
�• -1'L`� Compliance Status Compliance—procedural
requirements
Date of Signature: f j Action Code FCE
! ► J �"` CAV Result Compliance
Total Actual emissions in TONS/YEAR:
TSP S02 NOX VOC CO PM10 *HAP
2012 1.12 --- --- --- --- 0.3300 0.1000
2008 3.26 --- --- --- --- 0.9800 0.2803
*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 Methods) Source(s)Tested

1)Location: Kerr's Hickory Ready-Mixed Concrete Co., Inc. is located at 2701 Morganton Blvd. in
Lenoir,NC. Caldwell County.
Directions: From Morganton take Hwy 18 to Southwest Blvd. (just before Lenoir) and turn right.
The facility will be on the left just past the Virginia Street overpass.
2) Description: Kerr's Hickory Ready-Mixed Concrete Co., Inc. is a batch concrete plant that produces
concrete for the construction industry. This facility is now permit exempt effective date February 23,
2017. This company has been bought by Southern Concrete but is still DBA Kerr 's. Last compliance
inspection conducted on August 24, 2020 by Richard Morris.
Current throughputs: 2020
Hours: 2-3 days/week
Production: —2,000 cubic yards.
Permitted Sources are:
Emission � Emission Source Control Control System
Source ID Description ? System ID ! Description
lone truck mix concrete batch plant(maximum concrete process rate of 125 cubic yards per hour)
1consisting of the following:
j gone split cement-flyash I Pone bagfilter(225 square
ESl
storage silo- cement CD-1 feet of filter area, cement
side(100 tons of cement side)
f
;storage capacity)
lone split cement-flyash lone bagfilter(225 square `
=storage silo-flyash side ! ?feet of filter area, flyash
ES2 i CD-2 3 i (50 tons of flyash 'side)
E
!storage capacity
'one cement/flyash weigh { !one bagfilter(16 square
ES3 (hopper(5 tons of CD-3 'feet of filter area)
holding capacity)
ES4 .one concrete truck load E
N/A N/A
€
jout operation �
• The equipment listed above was observed not in operation.
Insignificant/Exempt Date of Exemption Comments
Activities Source Application Regulation
I-1 - Sand and aggregate delivery to
'ground storage,transfer to conveyor, N/A 2Q .0102 Observed not in
¥transfer to elevated storage,and ! (c)(2)(E)(i) i operation.
=weigh hopper '

Inspection Narrative: On May 19, 2021, I traveled to Kerr's Hickory Ready-Mixed Concrete Co., Inc.,
and made an off-site, unannounced observation of the facility. The facility was observed open, but the
silo and the truck load-out operation was observed not in operation. No VE or fugitive dust was observed
from the facility.No objectionable odor was detected. Due to the COVID- 19 Pandemic, DAQ staff are
not physically going inside facilities to perform inspections. On May 20, 2021, at approximately 1:32PM,
I called and spoke with Michael Calloway, Plant Operator with Kerr Concrete (cell# 828-757-0547).
Based on my conversation with him,we discussed the following:
• Verified the contacts based on FACFINDER printout. The new invoice contact is Robert Canipe,
Sales. All other contact information is current.
• I asked for the most recent bag filter logbook entries. Last annual inspection for all control
devices was performed on 8/04/2020. All bags were checked. The previous compliance
assurance visit stated the facility keeps a very good inspection and maintenance (I&M) logbook
with recent entries of maintenance and list the bags being change out.
4)Process Description: (AP-42)
Concrete is composed essentially of water, cement, sand(fine aggregate), and coarse aggregate. Coarse
aggregate may consist of gravel, crushed stone, or iron blast furnace slag. Some specialty aggregate
products could be either heavyweight aggregate(of barite, magnetite, limonite, ilmenite, iron, or steel)or
lightweight aggregate(with sintered clay, shale, slate, diatomaceous shale, perlite, vermiculite, slag,
pumice, cinders, or sintered fly ash). Concrete batching plants store, convey, measure, and discharge
these constituents into trucks for transport to a job site. In some cases, concrete is prepared at a building
construction site or for the manufacture of concrete products such as pipes and prefabricated construction
parts. The raw materials can be delivered to a plant by rail,truck, or barge. The cement is transferred to
elevated storage silos pneumatically or by bucket elevator. The sand and coarse aggregate are transferred
to elevated bins by front end loader, clam shell crane, belt conveyor, or bucket elevator. From these
elevated bins,the constituents are fed by gravity or screw conveyor to weigh hoppers,which combine the
proper amounts of each material. Truck mixed(transit mixed) concrete involves approximately 75
percent of U. S. concrete batching plants. At these plants, sand, aggregate, cement, and water are all
gravity fed from the weigh hopper into the mixer trucks. The concrete is mixed on the way to the site
where the concrete is to be poured. Central mix facilities (including shrink mixed) constitute the other
one-fourth of the industry. With these, concrete is mixed and then transferred to either an open bed dump
truck or an agitator truck for transport to the job site. Shrink mixed concrete is concrete that is partially
mixed at the central mix plant and then completely mixed in a truck mixer on the way to the job site. Dry
batching,with concrete mixed and hauled to the construction site in dry form, is seldom, if ever, used.
5)Inspection: I observed the facility, and the facility appeared to be open for business.
a. ES4 Truck load out: Observed not in operation.
b. ES1 and ES2 (split silo): Observed not in operation.
c. ES2 flyash and ES-3 weigh hopper: Observed not in operation.
6)Regulatory Review:
2D.0515 —Particulate Control(process weight). In compliance. Bagfilter control.
2D.0521 —Visible Emissions. In compliance. No VE was observed.
2D.0540—Fugitive Dust Control. No fugitive dust observed. In compliance.

7)Reporting requirements: There are no reporting requirements in the current permit.
8) 112R Status: The facility is not subject to 112R reporting requirements.
9)Five Year Compliance History:No violations in past five years.
10) Comments and Compliance Statement: Based on discussion with plant operator,review of records
and visual observations, this facility appeared to be in compliance with the Air Quality standards and
regulations at the time of this inspection.