AQ_F_0400045_20130416_CMPL_InspRpt

NORTH CAROLINA DIVISION OF Fayetteville Regional Office
AIR QUALITY Hildreth Septic Tanks
NC Facility ID 0400045
hispection Report County/FIPS: Anson/007
Date: 04/23/2013
Facility Data Compliance Data
Hildreth Septic Tanks Inspection Date 04/16/2013
City Pond Road-SR 1142 Inspector's Name Mike Thomas
Wadesboro,NC 28170 Operating Status Operating
Lat: 34d 55.4970m Long: 80d 5.9570m Compliance Code Compliance-inspection
SIC: 3273/Ready-Mixed Concrete Action Code FCE
NAICS: 32732/Ready-Mix Concrete Manufacturing On-Site Inspection Result Compliance
Contact Data Permit Data
Facility Contact Authorized Contact Technical Contact Permit 08715/G02
Kazl Hildreth Karl Hildreth Karl Hildreth Issued 10/17/2008
Owner Owner Owner Expires 9/30/2013
[phone] [phone] [phone] Classification Small
Permit Status Active
Inspector's Si%�� Comments:
Date of Signature: aC�
y z 3 zo/3
MACT/GACT Applicability: None(Not subject to: 4Z RICE—Reciprocating Internal Combustion Engines-
there are no generators on site).
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
From FRO,take Hwy 401 South to Wagram.Turn right at Old Wire Road(Hwyl44)and go — 11 �/2 miles to
Laurel Hill.Turn right at Hwy 74 and go west—35 miles to Wadesboro. Continue thru the city until you get to
Hwy 109 South.Turn left onto Hwy 109 South/Hwy 742 South,and continue following Hwy 109 South when
it splits off from Hwy 742.Go--2 miles and turn left onto City Pond Road(SR 1142).Go— 1 mile and Hildreth
Septic Tanks and Ready Mix will be on the left.Enter production plant at the first driveway of property to the
left, and enter office through the second drive to the left, which is Hildreth Drive(once you turn onto drive,
office is in what appears to be an aluminum sided body shop,to the right behind the first house on the drive
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.8715G02, effective from 17 October 2008 until 30
September 2013. Cindy Grimes conducted the last compliance inspection on 21 June 2011.
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
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, Not operating at the time of
inspection.
2. Silos for cement and flyash storage. Not operating at the time of inspection.
b) Insignificant/Exempt Activities
Source of Source of Title V
Source Exemption Regulation TAPS? Pollutants?
I 1-sand and aggregate handling 12Q.0102(c)(2)(E)(i) No I Yes
c) Throughputs for 2012
Employees: 5 (including drivers) (same in 2012)
Hours: 8:00 AM—S:OOPM(same in 2012)
Production: 3,397 yds3(3,272 yds3 in 2012)
3) Inspection Conference
On 16 April 2013, I Mike Thomas of the FRO DAQ arrived at Hildreth Septic Tanks to conduct a
compliance inspection.This was a planned inspection to assist with their Emissions Inventory and permit
renewal. Unfortunately,Mr.Hildreth confused the date and was unavailable to attend the meeting. Instead,
I met briefly with the office manager Wendy Barber. Ms.Barber was not expecting me.
a) Verified the FACFINDER information;Mr. Hildreth is the sole contact for all data.
b) I provided Ms. Barber with instruction on how to use AERO and gave her my contact info to assist her
when she is ready to enter their data.
c) 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
This facility was not operating while I was on site,as it currently operates only sporadically a few times per
week for a short time. I observed the following:
a) I was able to review the logbook,which had current entries.
b) There appeared to be no dust on surrounding properties and/or vegetation.
c) There appeared to be no new sources or modifications at the operating plant.

d) I did not notice any leaks or holes in the bagfilters or associated ductwork,nor did I observe any
dust accumulations around the loading area or storage silos.
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) A.4 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 with any
maintenance issues that have occurred.
e) A.8 2D .1104 TOXIC AIR 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 2012 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.
g) A.10 2Q .0711 TOXIC AIR 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.
6) Reporting Requirements
Annual report due March 1,showing compliance with 2D.1104;latest report was compliant and submitted on
time.

7) 112R Status
This facility neither uses nor stores chemical compounds that require a written risk management plan
under the Clean Air Act, Section 112R.
8) 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"
9) Comments and Compliance Statement
Since this facility only operates sporadically, it is difficult to observe it doing so.The facility was not
operating at the time of inspection but the total output is very low.
Hildreth Septic Tanks appeared to be in compliance on 16 April 2013
/mst