AQ_F_0400045_20190117_CMPL_InspRpt

NORTH CAROLINA DIVISION OF Fayetteville Regional Office
AIR QUALITY Hildreth Ready Mix,LLC
NC Facility ID 0400045
Inspection Report County/FIPS:Anson/007
Date: 01/25/2019
Facility Data Permit Data
Hildreth Ready Mix,LLC Permit 08715/G04
878 City Pond Road- SR 1142 Issued 4/17/2018
Wadesboro,NC 28170 Expires 3/31/2026
Lat: 34d 55.4970m Long: 80d 5.9570m Class/Status Small
SIC: 3273/Ready-Mixed Concrete Permit Status Active
NAICS: 32732/Ready-Mix Concrete Manufacturing Current Permit Application(s)None
Contact Data Program Applicability
Facility Contact Authorized Contact Technical Contact SIP
Kul Hildreth Karl Hildreth Karl Hildreth
Owner Owner Owner
[phone] [phone] [phone]
Compliance Data
Comments: ?
Inspection Date 01/17/2019
Inspector's Name Mike Thomas
Inspector's Signature: Operating Status Operating
/ Compliance Code Compliance-inspection
Action Code FCE
Date of Signature: On-Site Inspection Result Compliance
/• 2 � /
Total Actual emissions in TONS/YEAR:
TSP S02 NOX VOC CO PM10 *HAP
2017 1.25 --- --- -- 0.3800 0.1130
2012 0.7200 -- --- --- --- 0.2200 0.0610
*Highest HAP Emitted inpounds)
Five Year Violation History:
Date Letter Type Rule Violated Violation Resolution Date
03/23/2018 NOV Permit Late Report(excluding ACC) 03/25/2018
03/21/2017 NOV Permit Late Report(excluding ACC) 03/13/2017
Performed Stack Tests since last FCE: None
Date Test Results Test Method(s) Source(s)Tested
I. DIRECTIONS TO SITE:From FRO take Green Street to Gillespie and merge onto 195 BUS/301 S.
Merge onto 301 S.,then take a right onto NC 71. Continue to follow signs for NC 71. Merge onto HWY
74 W. and continue for 49 miles to Wadesboro. In Wadesboro,take Hwy 742 south for 3.5 miles to City

Pond Road and turn right. Hildreth Ready Mix is approximately 2 miles on the right. If no one is at the
plant,take Hildreth Road,which is just past plant,up to the office on the right.
II. SAFETY: Standard FRO safety gear is required. The inspector should be mindful of vehicular and
heavy equipment traffic.
III. FACII,TfY/PROCESS DESCRIPTION: Hildreth Ready Mix,LLC is a small truck mix, concrete
batch plant. Cement is stored in silos and mixed with aggregate and sand(both stockpiled on site),all of
which is mixed with water inside a cement truck. The loadout and silos are controlled by a central dust
collector. A second, bagfilter,which was previously used as a dedicated control for one of the silos is still
in place,but it is no longer operating. To produce the septic tanks, cement is poured into 1,000-gallon,
1,200-gallon,or 1,500-gallon molds and allowed to cure for 28-30 days.The molds are removed and
septic tanks are delivered and installed on site.Although septic tanks are still produced on site,most of
Mr.Hildreth's business now is delivering concrete from his batch plant,which is operated on an"as
needed"basis.
IV. PERMITTED EXIISSION SOURCES:
One Concrete batch plant with fabric filter air pollution control system(s)installed on all sources;
1. One(1)cement mixing weigh hopper and loading operation; and,
2. Silos for cement and flyash storage.
INSIGNIFICANT/EXEMPT ACTIVITIES:
--- --- - -- - - -- -
Source Exemption Regulation :Source of TAPS? Source of Title V Pollutants?
Sand and Aggregate Handling 2Q.0102(h)(5) i No Yes
Facility was not operating during the inspection.
V. INSPECTION CONFERENCE:
On 17 January 2019,I Mike Thomas and Evangelyn Lowery-Jacobs,both of FRO DAQ,conducted a
compliance inspection of the Hildreth Ready Mix, LLC facility. I met with owner,Karl Hildreth and
Office Manager,Chanel Little. We discussed the following:
a) Ms. Little verified the FACTFINDR information: no changes are needed.
b) I viewed the maintenance logbook. Entries were up to date and listed maintenance performed.
c) Mr.Hildreth stated that the facility had not run in several months and that all of their current
production was coming out of the Rockingham facility.

d) Production:
Operating hours 0900-1700 Monday-Friday w/occasional Saturday
Employees 7 including drivers
Production(cu yd) 2018: 6,746
2017: 6,294.5
2016: 4,147
2015: 7,972.5
2014: 6,000
2013: 2,000
2012: 3,397
VI. INSPECTION SUMMARY:
Due to the facility not operating we were limited to inspecting the areas around the plant and bagfilter for
signs of excessive emissions. The batch plant is old however,we did not see any compromises in the
ductwork or any indicators of excessive emissions.
VU. APPLICABLE AIR QUALITY REGULATIONS:
A. 15A NCAC 2D .0202—PERMIT RENEWAL AND EMISSION INVENTORY
REQUIREMENT—The permittee shall submit an application for renewal of the facility's permit no
later than 90 days prior to expiration, and shall include documentation of air pollutants emitted for the
2017 calendar year.
APPEARED IN COMPLIANCE: The facility submitted their previous emissions inventory and
permit renewal before the submittal deadline. The next deadline for submittal of emissions inventory
and permit renewal is December 2025 for the 2024 calendar year.
B. 15A NCAC 2D.0515—PARTICULATES FROM MISC.INDUSTRIAL PROCESSES—
Particulate emissions shall not exceed allowable emission rates.
APPEARED IN COMPLIANCE. Compliance was determined during the most recent permit review
based on operating the source as described in the permit conditions. No changes have been made to
operations since that determination.
C. 15A NCAC 2D .0521—CONTROL OF VISIBLE EMISSIONS—Visible emissions shall not
exceed 20%opacity.
APPEARED IN COMPLIANCE. The facility was not operating during the inspection. We did not
see any indication of issues with visible emissions at the time of inspection.
D. 15A NCAC 2D .0535—NOTIFICATION REQUIREMENT—Notify DAQ in the event of excess
emissions lasting longer than 4 hours resulting from malfunctions,breakdowns,or abnormal
conditions.
APPEARED IN COMPLIANCE. Mr. Hildreth stated that there had not been any operational
exceedances that would have required notification to this office.
E. 15A NCAC 2D .0540—PARTICULATES FROM FUGITIVE DUST EMISSION SOURCES—
Fugitive dust emissions shall not contribute to substantive complaints,or excessive dust emissions
beyond the property boundary.
APPEARED IN COMPLIANCE. No fugitive dust concerns at the property boundaries were noted
during the inspection. Ms. Little stated that they have not received any complaints related to dust.

F. 15A NCAC 2D .0611—FABRIC FILTER REQUIREMENT—Particulate emissions controlled by
fabric filters; annual internal inspections;record keeping.
APPEARED EV COMPLIANCE. Mr.Hildreth performs the maintenance himself Mr.Hildreth
stated that he removes the bags, inspects them for damage,rinses them, and lets them dry before
reinstalling them. Records indicated that the last internal inspection of the bagfilter took place on 5
June 2018.
G. 15A NCAC 2D .1104—TOXIC AIR POLLUTANT CONTROL REQUIREMENTS—Arsenic
emissions shall not exceed the AAL. Concrete production limit based on distance to property
boundary(340,500 cubic yards at 75 feet),which shall be marked. Monthly recordkeeping.
Notification of changes. Annual reporting.
APPEARED INCOMPLIANCE. The nearest property boundary is marked and has been verified at
—75 feet which limits the facility to 340,500 cubic yards of production annually. Mr. Hildreth keeps a
running log of concrete produced each day, and there is a spreadsheet available which shows the
monthly and annual totals;the facility produced 6,746 cubic yards in 2018. The annual report was
received late,on 25 March 2018,and a Notice of Violation was issued on 23 March 2018.
H. 15A NCAC 2Q.0310—GENERAL PERMIT CRITERIA—The facility must meet the following
criteria to qualify for a general permit: 1)No emissions sources operated other than those listed;2)
facility not subject to regulations other than those covered by the general permit;3)facility is located
in one of the listed counties;4)maximum hourly throughput does not exceed 138 cubic yards per
hour;and 5)the facility does not exceed the maximum annual production rate based on distance to the
property line(340,500 cubic yards at 75 feet).
APPEARED INCOMPLIANCE. The facility appears to qualify for a general permit. No other
emission sources other than those listed were noted,and the facility does not appear to be subject to
any regulations, State or Federal,other than those listed in the general permit. The facility is located
in Anson County,which is listed in the permit and covered by generalized modeling. The facility's
maximum throughput is 100 cubic yards per hour,which is much less than the maximum permitted
throughput,and the annual throughput, 6,746 cubic yards in 2018, is also much less than the 340,500
cubic yard limit.
I. 15A NCAC 2Q.0711—TOXIC AIR POLLUTANT EMISSION LIMITATIONS—Emissions of
toxic air pollutants shall not exceed the listed limitations without first obtaining a permit and
demonstrating compliance with 2D .1100.
APPEARED INCOMPLIANCE.- Compliance was determined during the most recent permit review
based on operating the source as described in the permit conditions. No changes have been made to
operations since that determination.
VHL NON-COMPLIANCE HISTORY SINCE 2010:
03/25/18 NOV issued for late annual reporting.
03/21/17 NOV issued for late annual reporting.
03/28/16 NOD issued for late annual reporting.
05/28/10 NOV issued for late annual reporting.
IX. RISK MANAGEMENT(112r):
The facility does not store any of the listed chemicals above the threshold quantities,and is not required
to maintain a written Risk Management Plan(RMP).

X. CONCLUSION AND RECOMN[ENDATIONS:
Hildreth Ready Mix,LLC. appeared to be INCOMPLUNCE with the conditions in their current air
permit, on 17 January 2018
PINK SHEET ADDITIONS:
None.
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