AQ_F_0400045_20140717_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: 08/11/2014
Facility Data Permit Data
Hildreth Ready Mix,LLC Permit 08715/G03
City Pond Road-SR 1142 Issued 7/30/2013
Wadesboro,NC 28170 Expires 6/30/2018
Lat: 34d 55.4970m Long: 80d 5.9570m Classification 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
Karl Hildreth Karl Hildreth Karl Hildreth
Owner Owner Owner
[phone] [phone] [phone]
Compliance Data
_ Comments:
Inspection Date 07/17/2014
Inspector's Name Mike Thomas
Inspector's Sign tune: Operating Status Operating
Compliance Code Compliance inspection
Action Code FCE
Date bf gnature: On-Site Inspection Result Compliance
Total Actual emissions in TONS/YEAR:
TSP SO2 NOX VOC CO PMIO * HAP
2012 0.7200 --- --- --- 0.2200 0.0610
2007 0.8240 --- --- --- --- 0.2410 0.0700
*Highest HAP Emitted(in ounds)
Five Year Violation History:
Date Letter Tvue Rule Violated Violation Resolution Date
05/28/2010 NOV Permit Late Report(excluding ACC) 03/05/2010
Performed Stack Tests since last FCE:None
Date Test Results Test Method(s) Source(s)Tested
1) Location
Hildreth Septic Tanks is located on City Pond Road, south of Wadesboro,in Anson County.Actual address of
office is 175 Hildreth Road, Wadesboro,NC.

Directions
In Wadesboro,take HWY 742 south for 3.5 miles to City Pond Road on the right. Hildreth Ready Mix is
approximately 2 miles on the right.
Safety considerations: Standard DAQ safety equipment.Watch for truck traffic,although this is a small
facility,and there's usually not a lot of traffic at one time.
2) Facility and Process Description
Hildreth Septic Tanks is a small batch concrete plant that also produces residential septic tanks. This
facility is permitted under Air Permit No.8715GO3,effective from 31 July 2013 until 30 June 2018.
Mike Thomas conducted the last compliance inspection on 16 April 2013.
Hildreth Septic Tanks is a batch concrete plant.Cement is stored in a silo and mixed with aggregate(stockpiled
on site), sand(stockpiled on site),and water inside a cement truck.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.
a Permitted Sources
Emission Emission Source Control Control System
Source ID Descri tion S stem ID Descri tion
ES-1 1-cement mixing weigh N/A Bagfilter
hopper and loading
o eration
ES-2 Silos for cement and N/A Bagfilter
flyash
b) Insignificant/Exempt Activities
--�i Source of ( Source of Title V
-� Source Exemption Regulation ( TAPs? Pollutants?
I-1 -sand and aggregate handl ng 2Q .0102(cX2)(E)O I No Yes
c) Throughputs for 2013
Employees: 5 (including drivers)(same in 2012)
Hours: 8:00 AM—5:OOPM(same in 2012)
Production: —2,000 yds3(3,397 yds3 in 2012)
3) Inspection Conference
On 17 July 2014,I Mike Thomas of the FRO DAQ conducted a compliance inspection.I met with Wendy
Barber,Office Manager. We discussed the following:
a) Verified the FACFINDER information;Mr.Hildreth is the sole contact for all data.
b) I checked the maintenance logbook,which contained accounts of daily truck load outs and monthly
records of baghouse inspections,which Mr.Hildreth performs.There were a few notes on days where
there were maintenance issues.Business has been relatively slow over the last year.

4) Inspection Summary
The facility was not operating during the inspection. Ms. Barber accompanied me on a tour of the plant.
There was no operator on duty and Ms. Barber has limited knowledge of operations. I observed the silos,
weigh hopper and loadout. Though old the equipment appears to be in good working order. I observed no
problems.
5)Permit Stipulations
a) A.3 2D.0515 PARTICULATE CONTROL REQUIREMENT:Particulate matter emission rates shall
not exceed>30 tons/hour.
Appeared to be in compliance- Latest permit review shows compliance.
b) AA 2D .0521 VISIBLE EMISSIONS CONTROL REQUIREMENT- Visible emissions from sources
manufactured after July 1, 1971 shall not be >20% opacity and from sources manufactured as of July 1,
1971,VE shall not be more than 40%opacity.
Appeared to be in compliance—This facility was not operating; therefore,I observed 0%VE.
c) A.6 2D .0540 FUGITIVE DUST CONTROL REQUIREMENT-Permittee shall not allow fugitive
dust emissions to cause or contribute to complaints/excessive emissions beyond the facility's boundary.
Appeared to be in compliance—I did not observe any fugitive dust emissions during my
inspection.
d) A.7 2D ,0611 FABRIC FILTER REQUIREMENT—Particulate matter emissions from permitted
equipment shall be controlled by fabric filters,with recordkeeping of regular inspections and maintenance.
Appeared to be in compliance—I reviewed the logbook,which contained entries of maintenance
issues that have occurred. Last annual inspection was 4 April 2014.
e) A.8 2D .1104 TOXICAIR POLLUTANT CONTROL REQUIREMENT—Facility shall not emit
arsenic that may cause an exceedance of the acceptable ambient level;minimum distance to property
line shall determine the maximum concrete production rate(35,000 yds3 for 75 feet);there shall be a
minimum distance to property line identification marker;Permittee shall record daily and monthly
concrete processed;Permittee shall submit summary report by March 1 of each year.
Appeared to be in compliance—I verified property line marker to be 75 feet;total concrete
production in 2013 was well below the maximum 35,000 yds3;production records appear to be
compliant; annual report was submitted on time and compliant.
f) A.9 2Q .0310 GENERAL PERMIT CRITERIA—The Permittee shall only operate permitted
emissions sources;facility must be located in listed counties;maximum hourly throughput at truck
loadout must be< 138 yds3/hour; facility must not produce more concrete than allowed based on
"minimum distance marker".
Appeared to be in compliance—Facility is only operating permitted sources,facility is located in Anson
County, latest permit review shows maximum throughput for facility is much lower than 138 yds3/hour,
and latest annual report shows compliance.Facility only produced approximately 2,000 yd' during 2013.
g) A.10 2Q .0711 TOXICAIR POLLUTANT EMISSIONS LIMITATIONS—Each TAP listed for
permit may not exceed TPERs(Beryllium<0.28 lbs/yr,Cadmium<0.37 lbs/yr, Chromium<
0.013lbs/day,Manganese/compounds<0.63 lbs/day,and Nickel metal<0.13 lbs/day).
_ Appeared to be in compliance—TPERs appear not to have been exceeded,based on current
production rates at facility. Facility only produced approximately 2,000 yd' during 2013.

6) 112R Status
This facility neither uses nor stores chemical compounds that require a written risk management plan
under the Clean Air Act, Section 112R.
7) DAQ Compliance History
a) 28 May 2010—NOV for late reporting
b) 9 October 2008—NOV for"Installing New Control Device without Air Permit Modification"
8) Comments and Compliance Statement
Production at this facility is sporadic and low(-2,000 yd').
Hildreth Septic Tanks appeared to be in compliance on 31 July 2014.
Pink sheet:given the sporadic nature of how they operate it may be wise to call in advance to arrange to see
the facility operate for the next inspection.
/mst