AQ_F_0400045_20130730_PRMT_Permit

NCDER
North Carolina Department of Environment and Natural Resources
Division of Air Quality
Pat McCrory Sheila C. Holman John E. SKvarla, Ill
Governor Director Secretary
July 30, 2013
Mr. Karl Hildreth
Owner
Hildreth Ready Mix, LLC
PO Box 1098
Wadesboro, NC 28170
Subject: Air Permit No. 087I5G03
GENERAL AIR PERMIT FOR CONCRETE BATCH PLANTS
Hildreth Ready Mix, LLC
Wadesboro, Anson County,North Carolina
Permit Class: General Small
Facility ID# 0400045
Dear Mr, Hildreth;
In accordance with your completed application received June 20, 2013, we are forwarding
herewith Permit No. 08715G03 to Hildreth Ready Mix, LLC, Wadesboro, Anson County, North
Carolina for the construction and operation of air emissions sources or air cleaning devices and
appurtenances. Additionally, any emissions activities determined from your air permit application
as meeting the exemption requirements contained in 15A NCAC 2Q .0102 have been listed for
information purposes as an "ATTACHMENT" to the enclosed air permit. Please note the records
retention requirements are contained in General Condition 2 of the General Conditions and
Limitations.
If any parts, requirements, or limitations contained in this permit are unacceptable to you,
you have the right to request a formal adjudicatory hearing within 30 days following receipt of this
permit, identifying the specific issues to be contested. Such a request will stay the effectiveness of
the entire permit. This hearing request must be in the form of a written petition, conforming to G.S.
15OB-23 of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh,NC 27699-6714. The form for requesting a formal
adjudicatory hearing may be obtained upon request from the Office of Administrative Hearings.
Unless a request for a hearing is made pursuant to G.S. 15013-23, this air permit shall be final and
binding.
You may request modification of your air permit through informal means pursuant to G.S.
Fayetteville Regional Office-Division of Air Quality
Systel Building,225 Green Street,Suite 714,Fayetteville,North Carolina 28301-5094
Phone:[phone]/FAX:[phone]
Internet:www,ncair.org
An Equal Opporlunify 1 Affrmalive Action Employer-Made in part by Recycled Paper

Karl Hildreth
July 30, 2013
Page 2
150B-22. This request must be submitted in writing to the Director and must identify the specific
provisions or issues for which the modification is sought. Please note that the permit will become
final and binding regardless of a request for informal modification unless a request for a hearing is
also made under G.S. 150B-23.
Unless exempted by a condition of this permit or the regulations, construction of new
air pollution sources or air cleaning devices, or modifications to the sources or air cleaning
devices described in this permit must be covered under a permit issued by the Division of Air
Quality prior to construction. Failure to do so is a violation of G.S. 143-215.108 and may
subject the Permittee to civil or criminal penalties as described in G.S. 143-215.114A and 143-
215.114B.
This permit shall be effective from July 30, 2013 until June 30, 2018, is nontransferable to
future owners and operators, and shall be subject to the conditions and limitations as specified
therein.
Changes have been made to the permit stipulations. The Permittee is responsible for
carefully reading the entire permit and evaluating the requirements of each permit
stipulation. The Permittee shall comply with all terms, conditions, requirements, limitations
and restrictions set forth in this permit. Noncompliance with any permit condition is grounds
for enforcement action, for permit termination, revocation and reissuance, or modification, or
for denial of a permit renewal application. Should you have any questions concerning this matter,
please contact Gregory Reeves at [phone].
Sincerely,
Steven 1~. Vozzo
Regional Air Quality Supervisor
GWR
Enclosures
c: Fayetteville Regional Office

NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF AIR QUALITY
AIR PERMIT NO. 087I5G03
Issue Date: July 30, 2013 Effective Date: July 30, 2013
Expiration Date: June 30, 2018 Replaces Permit: 08715G02
To construct and operate air emission source(s) and/or air cleaning device(s), and for the
discharge of the associated air contaminants into the atmosphere in accordance with the provisions
of Article 21B of Chapter 143, General Statutes of North Carolina (NCGS) as amended, and other
applicable Laws, Rules and Regulations,
Hildreth Ready Mix, LLC
w City Pond Road - SR 1142
Wadesboro, Anson County,North Carolina
Permit Class: General Small
Facility ID# 0400045
(the Permittee) is hereby authorized to construct and operate the air emissions sources and/or air
_ cleaning devices and appurtenances described below:
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.
in accordance with the completed application 0400045.13A received June 20, 2013 including any
plans, specifications, previous applications, and other supporting data, all of which are filed with the
Department of Environment and Natural Resources, Division of Air Quality (DAQ) and are
incorporated as part of this permit.
This permit is subject to the following specified conditions and limitations including any
TESTING, REPORTING, OR MONITORING REQUIREMENTS:

Permit No. 08715G03
Page 2
A. SPECIFIC CONDITIONS AND LIMITATIONS
1. Any air emission sources or control devices authorized to construct and operate above must
be operated and maintained in accordance with the provisions contained herein. The
Permittee shall comply with applicable Environmental Management Commission
Regulations, including Title 15A North Carolina Administrative Code (NCAC), Subchapter
2D .0202, 2D .0515, 2D .0521, 2D .0535, 2D .0540, 2D .0611, 2D .1100, 2Q .0310 and 2Q
.0711.
2. PERMIT RENEWAL AND EMISSION INVENTORY REQUIREMENT - The Permittee,
at least 90 days prior to the expiration date of this permit, shall request permit renewal by
letter in accordance with 15A NCAC 2Q .0304(d) and (f). Pursuant to 15A NCAC 2Q
.0203(i), no permit application fee is required for renewal of an existing air permit (without
a modification request). The renewal request (with AA application form) should be
submitted to the Regional Supervisor, DAQ. Also, at least 90 clays prior to the expiration
date of this permit, the Permittee shall submit the air pollution emission inventory report
(with Certification Sheet) in accordance with 15A NCAC 2D .0202, pursuant to N.C.
General Statute 143 215.65. The report shall be submitted to the Regional Supervisor, DAQ
and shall document air pollutants emitted for the 2017 calendar year.
3. PARTICULATE CONTROL REQUIREMENT- As required by 15A NCAC 2D .0515
"Particulates from Miscellaneous Industrial Processes," particulate matter emissions from
the emission sources shall not exceed allowable emission rates. The allowable emission rates
are, as defined in 15A NCAC 2D .0515, a function of the process weight rate and shall be
determined by the following equation(s), where P is the process throughput rate in tons per
hour (tons/hr) and E is the allowable emission rate in pounds per hour (lbslhr).
E = 4.10 * (P) '-" for P <= 30 tons/hr, or
E = 55 * (P) "' - 40 for P >30 tonslhr
4. VISIBLE EMISSIONS CONTROL REQUIREMENTS - As required by 15A NCAC 2D
.0521 "Control of Visible Emissions," visible emissions from the permitted sources shall
meet the visible emissions control requirements listed below:
a. Visible emissions from sources manufactured after July 1, 1971 shall not be more
than 20 percent opacity when averaged over a six-minute period, except that six-
minute periods averaging not more than 87 percent opacity may occur not more than
once in any hour nor more than four times in any 24-hour period.
b. Visible emissions from sources manufactured as of July 1, 1971 shall not be more
than 40 percent opacity when averaged over a six-minute period, except that six-
minute periods averaging not more than 90 percent opacity may occur not more than
once in any hour nor more than four times in any 24-hour period.
However, sources which must comply with 15A NCAC 2D .0524 "New Source
Performance Standards" or .1111 "National Emission Standards for Hazardous Air
Pollutants" must comply with applicable visible emissions requirements contained therein
instead of the standard listed above.

Permit No. 08715G03
Page 3
5. NOTIFICATION REQUIREMENT - As required by 15A NCAC 213 .0535, the Permittee of
a source of excess emissions that last for more than four hours and that results from a
malfunction, a breakdown of process or control equipment or any other abnormal
conditions, shall:
a. Notify the Director or his designee of any such occurrence by 9:00 a.m. Eastern time
of the Division's next business day of becoming aware of the occurrence and
describe:
i. the name and location of the facility,
ii. the nature and cause of the malfunction or breakdown,
iii. the time when the malfunction or breakdown is first observed,
iv. the expected duration, and
V. an estimated rate of emissions.
b. Notify the Director or his designee immediately when the corrective measures have
been accomplished.
This reporting requirement does not allow the operation of the facility in excess of
Environmental Management Commission Regulations.
6. FUGITIVE DUST CONTROL REQUIREMENT - As required by 15A NCAC 2D .0540
"Particulates from Fugitive Dust Emission Sources," the Permittee shall not cause or allow
fugitive dust emissions to cause or contribute to substantive complaints or excess visible
emissions beyond the property boundary. If substantive complaints or excessive fugitive
dust emissions from the facility are observed beyond the property boundaries for six minutes
in any one hour (using Reference Method 22 in 40 CFR, Appendix A), the owner or
operator may be required to submit a fugitive dust plan as described in 2D .0540(0.
"Fugitive dust emissions" means particulate matter that does not pass through a process
stack or vent and that is generated within plant property boundaries from activities such as:
unloading and loading areas, process areas stockpiles, stock pile working, plant parking lots,
and plant roads (including access roads and haul roads).
7. FABRIC FILTER REQUIREMENT - Particulate matter emissions from the permitted
equipment shall be controlled by fabric filters. Pursuant to 15A NCAC 2D .0611, the
Permittee shall inspect and maintain the fabric filters as provided below:
a. Inspection and Maintenance Requirements - To comply with the provisions of this
permit and ensure that emissions do not exceed the regulatory limits, the Permittee
shall perform, at a minimum, an annual (for each 12 month period following the
initial inspection) internal inspection of the fabric filter system. In addition, the
Permittee shall perform periodic inspections and maintenance as recommended by
the equipment manufacturer.

Permit No. 08715G03
Page 4
b. Recordkeepin�Requirements - The results of all inspections and any variance from
manufacturer's recommendations or from those given in this permit (when
applicable), shall be investigated with corrections made and dates of actions recorded
in a logbook. Records of all maintenance activities shall be recorded in the logbook.
The logbook (in written or electronic form) shall be kept on-site and made available
to DAQ personnel upon request.
8. TOXIC AIR POLLUTANT CONTROL REQUIREMENTS - The facility shall not emit
arsenic in such quantities that may cause an exceedance of the acceptable ambient level
(AAL) pursuant to 15A NCAC 2D .1104. To demonstrate compliance with this requirement,
the Permittee shall Iimit the quantity of concrete processed to less than the applicable
"Maximum Concrete Production Rate", as listed below, based on the facility's "Minimum
Distance to Property Line." "Minimum distance to property line" is the distance from the
cement mixing weigh hopper to closest point of the facility's property line.
Minimum Distance to_Property_Line Maximum Concrete Production Rate
meters/feet yd 3/year
10 m/ 32.8 ft 33,150
15 in 149.2 ft 34,075
20 m /65.6 ft 35,000
25 m 182.0 ft 47,500
30 m/ 98.4 ft 60,000
35 m 1 114.8 ft 75,000
40 in / 131.2 ft 90,000
45 in/ 147.6 ft 105,000
50 m/ 164.0 ft 120,000
55 m 1 180.4 ft 135,000
60 m 1 196.8 ft 150,000
The "Maximum Concrete Production Rate" may not be interpolated for property line distances
falling between two values listed above. (For example, a facility with a"Minimum Distance to
Property Line" of less than 60 meters but greater than or equal to 55 meters would be subject to a
"Maximum Concrete Production Rate" of 135,000 yd3lyr.)
- a. Property Line Identification - The Permittee shall maintain a physical marker at the
point on the property line used to establish the "Minimum Distance to Property
Line", as defined above. The physical marker may consist of any fixture, including
(but not limited to) a property line fence or a pole or stake installed at the point for
the specific purpose of meeting this requirement.

Permit No, 08715G03
Page 5
b. Monitoring/Recordkeeping Requirements - The Permittee shall maintain the
following records in a logbook. The logbook (in written or electronic form) shall be
kept on-site and made available to DAQ personnel upon request.
i. Each calendar month, the Permittee shall record the quantity of concrete
processed during the previous calendar month (in yd3/month); and,
ii. Each calendar year, the Permittee shall record the quantity of concrete
processed between January 1st and December 3Is' of the previous calendar
year (in yd3/year).
c. Notification Requirement - The Permittee shall submit a notification to the Regional
Supervisor within 15 days of installing an additional cement silo and/or flyash silo.
The notification shall include the following:
i. A description of the proposed silo, including storage.capacity and material
stored;
ii. A description of the proposed emission control; and,
iii. A statement indicating that the facility shall continue to qualify for the
general permit, as described in Specific Condition No. 9 of this permit.
d. Reporting Requirements - The Permittee shall submit a summary report to the
Regional Supervisor of monitoring and recordkeeping activities postmarked on or
before March 1st of each calendar year. The report shall include the following
information:
i. The "minimum distance to property line" at the facility, as defined in
Condition 9.e. of this permit;
ii. The monthly concrete production (in yd3/month) for each month (January
through December) of the-previous calendar year; and,
iii. The annual concrete production (in yd3/year) for the previous calendar year.
_ 9. In accordance with 15A NCAC 2Q .0310, the facility shall qualify for this general permit
provided it meets EACH of the following criteria:
a. The facility does not operate any emission sources other than emission sources listed
on Page 1 of this permit.
b. The facility is not subject to.any 15A NCAC 2D or 2Q regulation not addressed in
Specific Condition No. 1.

Permit No. 08715G03
Page 6
c. The facility is located in one of the following counties:
Alamance Cumberland Harnett North Hampton Scotland
Anson Currituck Hertford Onslow Stanly
Beaufort Dare Hoke Orange Stokes
Bladen Davidson Hyde Pamlico Surry
Brunswick Davie lredell Pasquotank Tyrrell
Cabarrus Duplin Johnston Pender Union
Camden Durham Jones Perquimans Vance
Carteret Edgecombe Lee Person Wake
Caswell Franklin Lenoir Pitt Warren
Catawba Gaston Lincoln Randolph Washington
Chatham Gates Martin Richmond Wayne
Chowan Granville Montgomery Robeson Wilson
Cleveland Greene Moore Rockingham Yadkin
Columbus Guilford Nash Rowan
Craven Halifax New Hanover Sampson
d. The maximums hourly throuLThput at the truck loadout does not exceed 138
yd3/hour.
e. The facility is a truck mix concrete batch plant that does not process more
concrete during any calendar year than the maximum production rate, as listed
below, applicable to the facility based on its "minimum distance to property line".
"Minimum distance to property line" is the distance from the cement mixing weigh
hopper to closest point of the facility's property line.
Minimum Distance to Property Maximum Concrete Production Rate
meters/feet yd 3/year
10 m/ 32.8 ft 33,150
15 m/ 49.2 ft 34,075
20 m/ 65.6 ft 35,000
25 m 182.0 ft 47,500
30 m/ 98.4 ft 60,000
35 m/ 114.8 ft 75,000
40 m 1 131.2 ft 90,000
45 m/ 147.6 ft 105,000
50 m/ 164.0 ft 120,000
55 m 1 180.4 ft 135,000
60 m 1 196.8 ft 150,000

Permit No. 08715G03
Page 7
The "Maximum Concrete Production Rate" may not be interpolated for property line distances falling
between two values listed above. (For example,a facility with a "Minimum Distance to Property Line" of less
than 60 meters but greater than or equal to 55 meters would be subject to a"Maximum Concrete Production
Rate" of 135,000 yd3/yr.)
10. TOXIC AIR POLLUTANT EMISSION LIMITATIONS - Pursuant to 15A NCAC 2Q .0711
"Emission Rates Requiring a Permit," for each of the toxic air pollutants (TAPS) listed
below, facility-wide actual emissions may not exceed the Toxic Permit Emission Rates
(TPERs) listed in 15A.NCAC 2Q .071 i:
6 Wx
Pollutant: Carcinogens {1blyr) Chronic Toxicants (lb/day)
:Beryllium 0.28
......
lCadmium ' 0.37 j
Chromium 0.013
Manganese and compounds ( 0.63
;Nickel metal 0.13
"Chromium" includes all soluble chromate compounds, as chromium (VI)equivalent.
The Permittee shall be responsible for obtaining a permit to emit TAPs and for
demonstrating compliance with the requirements of 15A NCAC 2D .1100 "Control of Toxic
Air Pollutants" PRIOR to exceeding any of the listed TPERs.

Permit No. 08715G03
Page 8
B. GENERAL CONDITIONS AND LIMITATIONS
I, TWO COPIES OF ALL DOCUMENTS REPORTS TEST DATA MONITORING DATA
NOTIFICATIONS, REQUESTS FOR RENEWAL, AND ANY OTHER INFORMATION
REQUIRED BY THIS PERMIT shall be submitted to the:
Regional Air Quality Supervisor
North Carolina Division of Air Quality
Fayetteville Regional Office
Systel Building
225 Green Street, Suite 714
Fayetteville,NC 28301-5094
910-433-3300
For identification purposes, each submittal should include the facility name as listed on the
permit, the facility identification number, and the permit number.
2. RECORDS RETENTION REQUIREMENT - Any records required by the conditions of this
permit shall be kept on site and made available to DAQ personnel for inspection upon
request. These records shall be maintained in a form suitable and readily available for
expeditious inspection and review. These records must be kept on site for a minimum of 2
years, unless another time period is otherwise specified.
3. ANNUAL FEE PAYMENT - Pursuant to 15A NCAC 2Q .0203(a), the Permittee shall pay
the ani-mal permit fee within 30 days of being billed by the DAQ. Failure to pay the fee in a
timely manner will cause the DAQ to initiate action to revoke the permit.
4. EQUIPMENT RELOCATION - A new air permit shall be obtained by the Permittee prior to
establishing, building, erecting, using, or operating the emission sources or air cleaning
equipment at a site or location not specified in this permit.
5. REPORTING REQUIREMENT - Any of the following that would result in previously
unpermitted, new, or increased emissions must be reported to the Regional Supervisor,
DAQ:
a. changes in the information submitted in the application regarding facility emissions;
b. changes that modify equipment or processes of existing permitted facilities; or
c. changes in the quantity or quality of materials processed.
If appropriate, modifications to the permit may then be made by the DAQ to reflect any
necessary changes in the permit conditions. In no case are any new or increased emissions
allowed that will cause a violation of the emission limitations specified herein.

Permit No. 08715G03
Page 9
6. This permit is subject to revocation or modification by the DAQ upon a determination that
information contained in the application or presented in the support thereof is incorrect,
conditions under which this permit was granted have changed, or violations of conditions
contained in this permit have occurred. The facility shall be properly operated and
maintained at all times in a manner that will effect an overall reduction in air pollution.
Unless otherwise specified by this permit, no emission source may be operated without the
concurrent operation of its associated air cleaning device(s) and appurtenances.
7. This permit is nontransferable by the Permittee. Future owners and operators must obtain a
new air permit from the DAQ.
8. This issuance of this permit in no way absolves the Permittee of liability for any potential
civil penalties which may be assessed for violations of State law which have occurred prior
to the effective date of this permit.
9. This permit does not relieve the Permittee of the responsibility of complying with all
applicable requirements of any Federal, State, or Local water quality or land quality control
authority.
10. Reports on the operation and maintenance of the facility shall be submitted by the Permittee
to the Regional Supervisor, DAQ at such intervals and in such form and detail as may be
required by the DAQ. Information required in such reports may include, but is not limited
to, process weight rates, firing rates, hours of operation, and preventive maintenance
schedules.
11. A violation of any term or condition of this permit shall subject the Permittee to enforcement
pursuant to G.S. 143-215.114A, 143-215.114B, and 143-215.114C, including assessment of
civil and/or criminal penalties.
12. Pursuant to North Carolina General Statute 143-215.3(a)(2), no person shall refuse entry or
access to any authorized representative of the DAQ who requests entry or access for
purposes of inspection, and who presents appropriate credentials, nor shall any person
obstruct, hamper, or interfere with any such representative while in the process of carrying
out his official duties. Refusal of entry or access may constitute grounds for permit
revocation and assessment of civil penalties.
13, The Permittee must comply with any applicable Federal, State, or Local requirements
governing the handling, disposal, or incineration of hazardous,.solid, or medical wastes,
including the Resource Conservation and Recovery Act (RCRA) administered by the
Division of Waste Management.
14. PERMIT RETENTION REQUIREMENT - The Permittee shall retain a current copy of the
air permit at the site. The Permittee must make available to personnel of the DAQ, upon
request, the current copy of the air permit for the site..

Permit No. 087I5G03
Page 10
15. CLEAN AIR ACT SECTION 112(r) REQUIREMENTS - Pursuant to 15A NCAC 2D .2100
"Risk Management Program," if the Permittee is required to develop and register a risk
management plan pursuant to Section 112(r) of the Federal Clean Air Act, then the
Permittee is required to register this plan with the USEPA in accordance with 40 CFR Part
68.
16. PREVENTION OF ACCIDENTAL RELEASES - GENERAL DUTY - Pursuant to Title I
Part A Section 112(r)(1) of the Clean Air Act "Hazardous Air Pollutants - Prevention of
Accidental Releases - Purpose and General Duty," although a risk management plan may not
be required, if the Permittee produces, processes, handles, or stores any amount of a listed
hazardous substance, the Permittee has a general duty to take such steps as are necessary to
prevent the accidental release of such substance and to minimize the consequences of any
release. This condition is federally-enforceable only.
17. GENERAL EMISSIONS TESTING AND REPORTING REQUIREMENTS - If emissions
testing is required by this permit, or the DAQ, or if the Permittee submits emissions testing
to the DAQ in support of a permit application or to demonstrate compliance, the Permittee
shall perform such testing in accordance with 15A NCAC 2D .2600 and follow all DAQ
procedures including protocol approval, regional notification, report submittal, and test
results approval.
Permit issued this the 30"' of July, 2013.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
r
even F. Vozzo
Regional Air Quality Supervisor
By Authority of the Environmental Management Commission
Air Permit No. 08715G03

ATTACHMENT to Permit No. 08715G03, July 30, 2013
Insignificant 1 Exempt Activities
E <; Source of Source of Title V
Source ! Exemption Regulation ;
TAPs�? Pollutants?,.
I-1
Sand and Aggregate 2Q .0102 (e)(2)(E)(i) No Yes
Handling
1. Because an activity is exempted from being required to have a permit or permit modification
does not mean that the activity is exempted from an applicable requirement or that the owner
or operator of the source is exempted from demonstrating compliance with any applicable
requirement.
2. When applicable, emissions from stationary source activities identified above shall be
included in determining compliance with the permit requirements for toxic air pollutants
under 15A NCAC 2D .1100 "Control of Toxic Air Pollutants" or 2Q .0711 "Emission Rates
Requiring a Permit."