NCG160161_COMPLETE FILE - HISTORICAL_20160614

STORMWATER DIVISION CODING SHEET - RESCISSIONS.
PERMIT NO.
(�� I� D 1u
DOC-TYPE
L4, COMPLETE FILE- HISTORICAL
DATE OF
RESCISSION
❑ ��� I
YYYYMMDD

n t
7
June 14, 2016
Mr. Bryan Pfohl, President
Carolina Sunrock
200 Horizon Drive
Suite 100
Raleigh, NC 27615
PAT MCCRORY
i ATr
DONALD R. VAN DER VAART
s eoerary
Subject: Multimedia Compliance Inspection
Carolina Sunrock LLC — Murihead Distribution Center
Durham County
Dear Permittee:
Department of Environment and Natural Resources staff conducted a multimedia compliance inspection of
Carolina Sunrock LLC — Murihead Distribution Center on May 25, 2016 for permitted and/or other
activities administered by the following Divisions:
Division of Air Division of Energy, Division of Water Division of Waste
Quality(DAQ) Mineral, and Land Resources (DWR) Management (DWM)
Resources EMLR
We hope that you have enjoyed the benefit of our initiative to provide a single inspector capable of handling
multiple areas of environmental compliance at your facility. The results of each applicable inspection area
and any associated response actions or necessary corrective measures are detailed in the Division specific
areas of the attached report. If there are no notes or comments under each Division header, you may assume
compliance with that particular Division's rules and regulations at the time of inspection. Should violations
be noted in the attached report, you may receive separate enforcement related correspondence in addition
to this report.
If you have any questions regarding this multimedia inspection, please contact me at Cheng Zhang
([e-mail]). Thank you for your cooperation.
cc:
DAQ RRO Files
DEMLR RRO Stormwater Files
Department of Environmental Quality, Raleigh Regional Office httpJldeq.nc.govl
1628 Mail Service Center, Raleigh, NC 27699-1628 Phone: [phone]
Location: 3800 Barrett Drive, Raleigh, NC 27609 Fax: [phone]

Asa �
NORTH CAROLINA DIVISION OF
AIR QUALITY
Inspection Report
Date: 05/25/2016
Carolina Sunrock LLC - Muirhead Distribution Center
1503 Camden Avenue
Durham, NC 27704
Let: 36d 0.9870m Long: 78d 52.4706m
SIC: 3273/ Ready -Mixed Concrete
NAICS: 32732 / Ready -Mix Concrete Manufacturing
Contact
Facility
Ricky Hayes Bryan Pfohl
Plant Foremen President
[phone] [phone]
Contact
Tony Sample
Compliance Manager
[phone]
Comments: /4 r rep2eo
Inspector's Signature:
Date of Signature: 6- Ili.' t6
Carolina Sunmck LLC - Muirhead Distribution
Center
NC Facility ID 3200270
County/FIPS: Durham/063
Permit 07464 / R13
Issued 1/25/2013
Expires 8/31/2017
Classification Synthetic Minor
Permit Status Active
Current Permit Application($) None
Program Applicability
SIP
NSPS: Subpart I
Data
Inspection Date 05/25/2016
Inspector's Name Gary Perlmuttcr
Operating Status Operating
ComplianceCode Compliance - inspection
Action Code FCE
On -Site Inspection Result Compliance
Total Actual enrlastons
to ivtv
TSP
lcwx:
SO2
NOX
VOC
CO
PMIO
"HAP
2011
8.51
5.39
4.60
3.00
49.49
5.07
540.00
F2006
2006
5.77
5.77
13.71
13
12.00
4.90
37.70
3.37
511.00
Date fetter Tvce Rule Violated
Date feat Results Test Method(s)
Violation Resolution Date
Source(s) Tested
(1) DIRECTIONS TO FACILITY: From the RRO turn right onto Six Forks Rd. Merge onto I-440 W Outer Beldine via the
ramp to the left. Exit onto US-70 W via Exit 7B toward Crabtree Valley / Durham. US-70 W becomes US-70 W bypass.
Take the Cheek Rd exit - Exit 286. Turn right onto Cheek Rd, then left at the first stoplight onto Midland Terrace. Follow
that for about a mile and turn left onto Camden Ave. The facility is located on the right after 0.4 miles.

3200270 Inspection 1(cp„rt 11aFc 12
(II) FACRBrY DESCRIPTION: The Carolina Sunrock LLC - Muirhead Distribution Center consists of a batch type asphalt
and a batch concrete plant Asphalt operations involve heating crushed stone and sand to 320' F and combining them with
liquid asphalt. The resulting mix is loaded into tucks for distribution. The asphalt plant is rated for 300 tons per hour.
Concrete operations involve placing measured amounts of cement, aggregate, fly ash and water into a mixing truck The
concrete plant is rated for 100 tons per hour.
Safety note: Standard safety equipment required includes: hard hat, steel toed shoes, safety glasses, hearing protection and a
reflective vest Main concern is truck traffic.
(IIn SUMMARY OF INSPECTION: On May 25, 2016, I (Gary Perlmutter) along with Cheng Zhang (DWR), Thad Valentine
(DLR) and Eric Swope (DWM) visited the facility to conduct a multimedia compliance inspection for air, water, land and
waste media. This report addresses the air permit inspection component
Upon arrival we noticed that die facility was very busy and aside from fugitive dust kicked up by truck traffic, little or no
emissions were observed. We met with Mr. Tony Sample, Compliance Manager and Technical Contact, as well as Mr. Ricky
Hayes, the new Facility Foreman and Facility Contact, Mr. Fred Blankenship, former Facility Contact and facilities manager,
and other staff. We reviewed the permit and required recordkeeping. All appeared to be in order. After document review, we
inspected the equipment and the yard. At the time of the inspection, the asphalt plant was burning natural gas, had opacity of
zero from its slack, and was using RAP. The concrete batch plant was also running and we observed a truck unloading
cement or fly -ash as well as cock loadings of concrete. No visible emissions were observed, and wet suppression was
observed in operation to control dust
Overall, the facility appeared to be well run and maintained from an air quality standpoint. Further details follow.
(IV) PERMITTED EMISSION SOURCES:
Emission
Emission Source
Control
Control System
Source ID
Description
System ID
Description
(batch mix asphalt plant (350 tons per hour maximum design production rate limited to 334 tons per hour)
lconsisting of:)
SIL-1, SIL-2,
1SIL-3, SIL4,
six asphalt storage silos (five with 200 ton
(capacity
w _
N/A !
!SIL-5, SIL-6
each, one at 80 ton capacity)
N/A I
I
^
led
2/recyural No. filed. 4/recycled No. 4
-
'Y --- '
ES-1 (NSPS)
j
1125
fuel2/racy
fuel gas fired batch type hot mix
asphalt plant (350 tons/hour max. capacity,
cyclone (132 inches in diameter) in
I series with b
CD4, ,390 square '
CD-6 'a filter 12
p g (
j
mmBtu/ltr max, heat input)
!feet of filter area)
:ES 7
200 barrel capacity minemal filler silo - _I
central mix concrete batch plant (60 cubic yards per hour maximum capacity)
ESA ES-B,
ry cement storage silo (141 on
f
j jcpaia
DES-D capacity), primary flyash silo (141 run
pcity), and the truck loadout operation
CD-BFD bogfilter (1,450112 filter area)
i
iES-C
115 too capacity weigh botcher
CD-BFC bagfilter (23.3 fl= filter area)
)ES-E itwin shaft wet mixer (—CD-BFD
i - _bagfilter (1,450 fP filter area) --
system
RAP RAP
A'
CNV A RAP
a RAP feed system consisting of: a feed
� B RAP
hopper, two conveyors, a crusher, and a
N/A N/A
CRSH, RAP SCN 5 x 7 screen

3200270 Inspection Report
P agc 13
All equipment was verified and observed in operation with the following exceptions: two of the six asphalt storage
silos (SIL- series) were not yet constructed, and the mineral filler silo (ES-7) had been removed some years ago per
Mr. Sample.
(V) SPECIFIC CONDITIONS AND LIMITATIONS:
Al The Pernittee shall comply with Title ISA NCAC, Subchapter 2D .0202, 2D .0506, 2D .0510, 2D .0515, 2D .0516, 2D
.0521, 2D .0524 (40 CFR 60, Subpart I), 2D .0535, 2D .0540, 2D .0605, 2D .0611, 213 .1806, 2Q .0315 and 2Q .0317
(Avoidance).
Appeared to be la compliance — see below.
A.2 PERMIT RENEWAL AND EMISSION INVENTORY REOUIREMENT - At least 90 days prior to the expiration date of
this permit, the Permittee shall shall request a permit renewal and submit the air pollution emission inventory report for 2016
in accordance with 15A NCAC 2D .0202.
Appeared to be in compliance — I reminded the facility personnel or this condition.
A.3 PARTICULATE CONTROL REQUIREMENT - As required by 15A NCAC 2D .0506 "Particulates from Hot Mix Asphalt
Plants,
a. Particulate matter (PM) emissions from a hot mix asphalt plant operation shall not exceed allowable emission rates.
b. Visible emissions (VE) from stacks or vents at a hot mix asphalt plant shall be < 20% opacity over a six -minute
average.
c. Fugitive dust emissions shall be controlled as required by 15A NCAC 2D .0540.
d. Fugitive emissions for sources it a hot mix asphalt plant not covered elsewhere under this Rule shall not exceed
20% opacity averaged over six minutes.
e. All hot mix asphalt batch plants shall be equipped with a scavenger process dust control system for the drying,
conveying, classifying, and mixing equipment. The scavenger process dust control system shall exhaust through a
stack or vent and shall be operated and maintained in such a manner as to comply with the allowable particulate
emission rate and opacity limit of this Rule.
Appeared to be in compliance — the facility has a-icavenger circuit. The facility was operating during the inspection and the
facility was operating their control devices Including wet suppression. VE was observed at 0-lo% coming from atop or the
silos; none was observed from the emission stack. There was no asphalt production -related dust observed at or beyond the
property line.
AA PARTICULATE CONTROL REQUIREMENT - As required by 15A NCAC 2D .0510 "Particulates from Sand Gravel, or
Crushed Stone Operations," the following requirements apply:
a The Pemtittee of a sand, gravel, recycled asphalt pavement (RAP), or crushed stone operation shall not cause, allow,
or pewit any material to be produced, handled, transported, or stockpiled without taking measures to reduce to a
minimum any PM from becoming airborne to prevent exceeding the ambient air quality standards beyond the
property line for particulate matter, both PMro and total suspended particulates.
b. Fugitive dust emissions from sand, gravel, RAP, or crushed stone operations shall be controlled by 15A NCAC 2D
.0540.
c. The Penaiaee of any send, gravel, RAP, or crushed stone operation shall control process -generated emissions:
i. From crushers with wet suppression (excluding RAP crushers); and
ii. From conveyors, screens, and transfer points such that the applicable opacity standards in 15A NCAC 2D
.0521 Control of Visible Emissions," or 15A NCAC 2D .0524 "New Source Performance standards" are
not exceeded.
Appeared to be In compliance —1 observed the RAP In operation, with wet suppression being applied via spray -bars. No VE
was observed from this process, and no fugitive dust was observed beyond the property.
A5 PARTICULATE CONTROL REOLBFMENT - As required by 15A NCAC 2D .0515 "Particulates from Miscellaneous
Industrial Processes," PM emissions from the emission sources shall not exceed allowable emission rates.
Appeared to be In compliance — considering the above stipulations A.3 and A.4 apply to the asphalt plant and RAP operations,
respectively, this stipulation applies to the facility's remaining dust sources, including the concrete batch plant. No VE was
observed from the concrete batch plant, which is controlled by bagfdters.

3200270 1 n s p e c I i a n Itepor1 I'aoc 14
A6 SULFUR DIOXIDE (SO2) CONTROL REQUIREMENT — As required by 15A NCAC 2D .0516, SO2 emissions shall not
exceed 2.3 Ibs/mmBm heat input.
Appeared to be In compliance — the faculty currently burns only natural gas. The faculty does use H4 fuel oil If curtailed. They
were curtailed once In the past year In January 2015 but the faculty was not operating at the time, so they did not combust any
fuel oil. Mr. Sample Informed us that the faculty has not used fuel oft in a number of years.
A.7 VISIBLE EMISSIONS CONTROL REQUIREMENT — As required by 15A NCAC 2D .0521 VE from sources
manufactured after July 1, 1971, shall not be > 200A opacity over a six -minute average.
Appeared to be In compliance —1 observed visible emissions in the 0-10% opacity range from atop the asphalt silos during the
Inspection.
A.8 15A NCAC_2D .0524_'NEW SOURCE PERFORMANCE STANDARDS (NSPS)"- For the asphalt plant (ID No. ES-1), the
Pennittee shall comply with NSPS as promulgated in 40 CFR 60, Subpart 1, including Subpart A "General Provisions."
a. NSPS Emissions Limitations - the Permittee shall not discharge or cause the discharge into the atmosphere from any
affected source any gases which:
i. Contain particulate matter in excess of 90 mg/dscm (0.04 gr/dscf); of
1 Exhibit 20 percent opacity, or greater.
b. Recordkeeping Requirement - Asa result of the May 9, 2006 compliance, test, the asphalt production shall not
exceed 334 tons per hour. For each day of operation, the Permittee shall maintain records showing the total
production in tons, the hours of operation, and the highest targeted hourly production rate for that day.
Appeared to be In compliance — no VE was observed from the asphalt plant's stack. Recordkeeping was observed as complete,
as reviewed on an electronic spreadsheet. Facility personnel told us that the current production rate Is 200-220 tonsthr.
A.9 NOTIFICATION REQUIREMENT - As required by 15A NCAC 2D .0535, the Permittee of a source of excess emissions
that last > 4 hr and results from a malfunction, a breakdown of equipment or any other abnormal conditions, shall notify the
DAQ by the next business day.
Appeared to be In compliance— no such incidents have occurred per facility personnel; I reminded them of this condition.
A.10 FUGITIVE DLrsT CnNTRnr REQUI t:MM - As required by 15A NCAC 2D .0540, the Permittee shall not cause or
allow fugitive dust emissions to cause or contribute to substantive complaints or excess VE beyond dre property boundary.
Appeared to be in compliance — while some dust was observed being kicked up by heavy truck traffic onsite, the facility does
use a water track on haul roads and wet suppression Is sprayed on aggregate plies. No dust complaints are on file against the
faculty.
A.11 TESTING REOUIREMENT - In accordance with 15A NCAC 2D .0605, the Permittee shall demonstrate compliance with
the emission limit specified in NCAC 2D .0506 by testing the asphalt plant (ES-1) for PM(TSP). Test results must be
submitted to DAQ by by November 9, 2016.
Appeared to be in compliance- I -Beam records Indicated that the testing protocol had been received by DAQ on February 26,
2016 and reviewed on March 4, 2016 with a proposed test date of March 28, 2016. Prior to the inspection, Steve CarrpfDAQ-
RRO Informed me that the test is scheduled for September 2016. When askedabout the scheduled testing, Mr. Sample
concurred with the dateline, and expressed concern about the necessity of such testing.
A.12 FRIG FILTER REQUIREMENTS - As required by 15A NCAC 2D .0611, PM emissions shall be controlled as described
in the permitted equipment list.
a. lttsuection and Maintenance (I&M) Reauirement - the Permittee shall perform at least an annual internal inspection
plus periodic 1&cM as recommended by the equipment of each bagfilter system.
b. Recordkecoina Reauirements - The results of all I&M activities shall be recorded in a logbook, which shall be kept
on -site and made available to DAQ personnel upon request.
Appeared to be in compliance — I was shown two bagllter binders: one for the aphalt plant and one for the concrete batch
plant. Both had monthly log entries with most recent dating in April 2016. All records appeared complete and up-to-date. For
the asphalt plant, a dye Is Introduced and bags detected to have holes were replaced; 33 such bags were replaced on April 1,
2016. For the concrete batch plant, Magnshele differential pressure readings are also recorded with bag inspections. Facility
personnel informed me that the most recent bag change for the concrete batch plant was about 1.5 yrs ago.

3200270 Inspection Report Page 15
A.13 CYCLONE REOUIREMENTS. As required by 15A NCAC 2D .0611, PM emissions shall be controlled as described in the
permitted equipment list.
a. Inspection and Maintenance (I&M) Requirements - the Permiuee shall perform at least an annual internal inspection
plus periodic I&M as recommended by the equipment of each cyclone system.
b. Rmordkeeoina Requirements - The results of all I&M activities shall be recorded in a logbook, which shall be kept
on -site and made available to DAQ personnel upon request
Appeared to be In compliance — the asphalt plant baghouse binder included I&M notes on its cyclone. The most recent record
is dated April 1, 2016.
A.14 CONTROL AND PROHIBITION OF ODOROUS EMISSIONS - As required by 15A NCAC 2D .1806, the Pemdttee shall
prevent odorous emissions from the facility from causing or contributing to objectionable odors beyond the facility's
boundary.
Appeared to be in compliance —only moderate asphalt odors were detected onsite during the Inspection. One odor complaint Is
on record, received on October 4, 2004 and investigated on October 8, 2004. This complaint was not substantiated.
A.15 LIMITATION TO AVOID 15A NCAC 20,0501 - Pursuant to 15A NCAC 2Q .0315 "Synthetic Minor Facilities," to avoid
the applicability of 15A NCAC 2Q .0501 "Purpose of Section and Requirement for a Permit," as requested by the Pemdttee,
facility -wide emissions shall be less than the following:
Emission Limit
Pollutant (Tons per consecutive 12-month period)
S02 100
NO. 100
CO 100
a. Ovarations Restrictions - the following restrictions shall apply: .
I. The maximum sulfur content of the No. 4 fuel oil shall be limited to 1.5% sulfur by weight.
ii. The maximum sdlfw content of the No. 2 fuel oil combusted shall be limited to 0.5% sulfur by weight
Ill. The Permittee shall monitor the tons of asphalt produced such that the following pollutant inequalities are
not exceeded (see permit for equation).
b. Recordkecuin t Reauirements
I. The Pemdttee shall record monthly and total annually the total tons of asphalt produced for each permitted
fuel.
ii. Fuel supplier certification shall be kept on -site and made available to DAQ personnel upon request
c. Renortine Requirements - Within 30 days after each calendar year, the Permittee shall submit the following:
i. monthly and 12 month totals for the previous 12-month period of:
A. carbon monoxide, nitrogen oxides, and sulfur dioxide emissions.
` B. asphalt production in tore.
Appeared to be in compliance — I reviewed the production records onsite and they appear complete and up-to-date with
monthly and 12-month roiling totals of production and emissions. The most recent 12-month railing totals Include: 334,000
tons of asphalt produced, and 0.837 tons SO2, 4.18 tons NO. and 56.884 tons CO emitted from April 2015 to April 2016. Copies
of previous annual reports are kept onsite; I -Beam records Indicate that they were received on time and found In compliance.
A.16 LIMITATION TION TO AVOID PREVENTION OF SIGNIFICANT DETERIORATION' - In accordance
with 15A NCAC 2Q .0317, to comply with this permit and avoid the applicability of 15A NCAC 2D .0530 as requested by
the Permiree, emissions shall be limited as follows:
Affected Source(s) Pollutant C per ConsecuutivtivEmissionLimit
(1'oas e 12-month Period)
Facility Wide F CO r 250
Facility Wide S02 I 250
Appeared to be In compliance— compliance with A.15 ensures compliance with this stipulation.
A,17 RECYCLED ASPHALT SHINGLE REWREMENTS - - In accordance with Rule 2Q .0317, the Permittee is avoiding the
applicability of Rule 2Q .0700 and 2D .1100 for asbestos, and 40 CFR 61, Subpar M, National Emission Standard for
Asbestos by using post -consumer reclaimed asphalt roofing shingles (also known as PRAS and herein denoted as recycled

3200270.I11spoetioit It apart 1'agc 16
shingles) which are equivalent to their virgin or unadulterated counterparts. The Permittee is allowed to use Use recycled
shingles and associated asphalt roofing materials provided the following conditions are met (see permit for details).
Appeared to be In compliance — Mr. Sample indicated that the facility no longer uses recycled shingles, having stopped three
years ago.
A.18 VENDOR SUPPLIED RECYCLED No(s)2 and 4 FUEL OIL REQUIREMENTS - In accordance with Rule 2Q .0317, the
Permittee is avoiding the applicability of Rule 2Q .0700 by using recycled fuels which are equivalent to their virgin
counterparts. The Pemrittee is allowed to use the recycled fuel oil(s) supplied by a DAQ-approved vendor as follows (see
permit for details).
Appeared to be in compliance - Mr. Sample indicated that the facility has not used recycled fuel oil for about three yeah.
(VI) GENERAL PERMIT CONDITIONS:
B.5 REPORTING REQUIREMENT - Any changes that would result in previously unpenaitted, new, or increased emissions
must be reported to the Regional Supervisor, DAQ.
Appeared to be in compliance —Mr. Sample indicated that no such changes have occurred.
B.14 PERMIT RETENTION REQUIREMENT - The Pemtince shall retain a current copy of the air permit at the site. The
Pemrittee must make available to personnel of the DAQ, upon request, the current copy of the air permit for the site.
Appeared to be In compliance — Mr. Sample showed me an electronic copy of Air Permit No. 0746R13 during the document
review portion of the Inspection.
B.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.
Not Applicable— the facility Is not subject to Section 112(r).
(VID EXEMPT EMISSION SOURCES:
Source I
Exemption
Regulation
f Source of
i TAPs?
I Source of Title V
Pollutants?
IS-02 - No. 2 fuel oftatural gas fired preheat system for
;
the liquid asphalt tank (1.2 mmBtuihr maximum heat
2Q .0102
i Yes
f
! Yes
input)
(c)(2)(B)(i)(I)
?
1-MDC-TNK-2 - 30,000 gallon asphalt tank
2Q .0102
— Y�
-- Yes
Ml)(D)(i)
;
IS-STl - No. 2 fuel oil storage tank (10,000 gallon
2Q .0102
storage capacity)
(cx l)(D)(i)
i No
Yes
IS-ST2 - No. 4 fuel oil storage tank (20,000 gallon i
2Q .0102
j
storage capacity) °
Ml)(D)(i)
1 No
Yes
IS-ST3 - liquid asphalt storage tarok (35,000 gallon
2Q .0102
i
storage capacity) j
(c)(1)(D)(i)
I No
Yes
All sources were verified during the Inspection.
(VIII) EMISSIONS INVENTORY REVIEW: as stated in the 2014 inspection report: "The emission inventory header shows an
Increase in CO, 73P, PM10, and HAP emissions between the years of 2006 and 2011. 77tis increase is due to an increase in
throughput. "
(IX) SOURCE TEST REVIEW: A review of I -Beam records revealed the following source tests:
• May 9, 2006 - the hot mix asphalt plant, (ID No. ES-1), was tested for the applicable filterable particulate and
visible emission standards established under the NSPS Subpart 1, and the total particulate limit established under
15A NCAC 2D .0506. Compliance was demonstrated.
• A repeat testing of ES-1 is scheduled for September 2016 for compliance with 2D .0506 and 2D .0605.

3200270 Inspection Report
I'�'vel7
(X) COMPLIANCE HISTORY: A review of I -Beam records revealed the following compliance actions the facility has
triggered:
• June 27, 2006 — a Notice of Violation/Notice of Recommendation for Enforcement (NOV/NRE) was issued on for
the combustion of out -of -spec No. 4 recycled fuel oil because the concentration of chromium was above the
allowable limit of 3 ppm. However, based on the fording of test bias, no civil penalty was assessed for this violation
and the NOV/NRE was rescinded on October 27, 2006.
• January 18, 2000 — an NOV/NRE was issued for failing to submit a quarterly report by the due date for the fourth
time. The enforcement package was not prepared in a timely manner due to personnel changes, so civil penalties
was not pursued and the recommendation for enforcement was withdrawn on November 1, 2000,
• July 9, 1999 - an NOV/NRE was issued for failing to submit a quarterly report by the due date for the third time. An
enforcement package was prepared on September 10, 1999 with an assessment of S 196.00.
• May 12, 1997 — an NOV was issued for failing to submit quarterly report by the due date for the second time.
• February 24, 1997 — an informational letter was issued for failing to submit a quarterly report by the due date.
(?Q) CONCLUSIONS/RECOMMENDATIONS: At the time of this inspection, it appears that Carolina Sunrock LLC —
Muirhead Distribution Center is in compliance with their air quality permit requirements. The facility should be inspected
again within a year.

zt-
PAT MCCRORY
Govemor
Environmental
Quality
June 14, 2016
Mr. Bryan Pfohl, President
Carolina Sunrock
200 Horizon Drive
Suite 100
Raleigh, NC 27615
Subject: NPDES Stormwater Compliance Evaluation Inspection
Certificate of Coverage No. NCG160161
Carolina Sunrock LLC — Murihead Distribution Center
Durham County
Dear Mr. Pfohl:
DONALD R. VAN DER VAART
.. Secretary
Staff from the Department of Environmental Quality (DEQ) conducted a stormwater inspection on May
25, 2016, as part of a multimedia inspection of your facility. The assistance provided by Mr. Tony
Sample, the Compliance Manager, during the inspection was greatly appreciated. The inspection report
is attached. Findings during the inspection were as follows:
1. Certificate of Coverage (COC) No. NCG160161 under NPDES General Permit NCG160000
was issued to Carolina Sunrock LLC — Murihead Distribution Center to discharge stormwater
runoff to Ellerbe Creek, a WS-V, NSW, CA stream, in the Neuse River Basin.
The facility has developed a stormwater pollution prevention plan (SPPP). A review of the
plan indicated that it included all components required by the general permit. It was noted
that annual employee training is documented in a Microsoft Word File. The General
Permit requires that annual training shall be documented by signature and printed or
typed name of each employee trained. Please document future employee training in the
form that is specified in the General Permit.
3. Semi-annual qualitative has been conducted at the only stormwater discharge outfall (SDO1).
Last recorded discharge and analytical monitoring was on November 11, 2011.
4. The lone outfall was observed during the inspection; the end of the discharge pipe was not
readily accessible. Mr. Sample explained that samples were taken at the other end of the pipe
in the retention pond.
Raleigh Regional Office1628 Mail Service Center, Raleigh, North Carolina 27699-1628
Phone: [phone] / FAX: [phone] / Internet: http://portal.ncdenr.org/web/Ir/
An Equal Opportunity \ Affirmative Action Employer — 50% Recycled \ 10% Post Consumer Paper

Page 2 of 2
5. The facility is both a batch asphalt and batch concrete plant, however it has only one COC
(NCG160161) under General Permit NCG160000, which authorizes industrial stormwater
discharges associate with activities classified as establishments primarily engaged in
manufacturing Asphalt Paving Mixtures and Blocks and like activities deemed to be similar
in the process or in the exposure of raw materials, final products, by-products, or waste
materials. This inspection confirms that process wastewater associated with vehicle and
equipment cleaning, raw material stockpiles wetting, and mixing drum cleanout is generated
on site, and can be potentially discharged to the receiving waters via the stormwater
discharge outfall. Discharge of such process wastewater is not covered by the General Permit
NCG160000.
Therefore, the facility will also need coverage under General Permit NCG140000. The
General Permit authorizes stormwater and/or process wastewater associate with activities
classified as establishments primarily engaged in manufacturing ready -mixed concrete and
like activities deemed to be similar in the process and/or in the exposure of raw materials,
products, by-products, or waste materials.
Please complete and submit the enclosed Notice of Intent Form to apply for coverage under
General Permit NCG140000 within 30 days of receipt of this letter. If you have any questions
regarding the attached report or any of the findings, please contact Cheng Zhang at 919-791-4200 (or
email: chene.zhane n,ncdenngov).
Sincerely,
Cheng Zhang
Environmental Senior Specialist
Raleigh Regional Office
Enclosure: Compliance Evaluation Inspection Form
Notice of Intent for Coverage under NCG140000
cc: DAQ RRO files
PRO Stormwater files

Compliance Inspection Report
Permit: NCG160161 Effective: 10/02/14 Expiration: 09/30/19 Owner: Carolina Sunrock LLC
SOC: Effective: Expiration: Facility: Murihead Distribution Center (MDC)
1503 Camden Ave
County: Durham
Region: Raleigh Durham NC 27704
Contact Person: Tony Sample Title: Phone: [phone]
Directions to Facility:
System Classifications:
Primary ORC:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 05/25/2016
Primary Inspector: Chang Zhang
Certification:
Phone:
EntryTime: 10:00AM Exlt Tlme: 12:OOPM 6 It c1L/Lv y 6
CL94r_, 1�i /_ uy,—�� - Phone: [phone]
Secondary Inspector(s):
_.
Thaddeus W Valentine Phone
Eric Swope
Reason for Inspection:
Routine Inspection Type: Compliance Evaluation
Permit Inspection Type:.
Asphalt Paving Mixture Stoonwater Discharge CDC
Facility Status:
Compliant ❑ Not Compliant
Question Areas:
® Storm Water
(See attachment summary
Page: 1

Permit: NCG160161 Owner- Facility: Carolina Sunrock LLC
Inspection Date: 05/25/2016 Inspection Type : Compliance Evaluation Reason for Visit Routine
Inspection Summary:
The facility is both a batch asphalt and batch concrete plant, however it has only one CDC (NCG160161) under General
Permit NCG160000, which covers industrial stormwater discharges associate with activities classified as establishments
primarily engaged in manufacturing Asphalt Paving Mixtures and Blocks and like activities deemed to be similar in the
process or in the exposure of raw materials, final products, by-products, or waste materials. This inspection confirms that
process wastewater associated with vehicle and equipment cleaning, raw material stockpiles wetting, and mixing drum
cleanout is generated on site, and can be potentially discharged to the receiving waters via the stormwater discharge
outfall. Discharge of such process wastewater is not covered by the General Permit NCG160000. Therefore, the facility
shall apply for coverage under General Permit NCG140000, which authorizes stormwater and/or process wastewater
associate with activities classified as establishments primarily engaged in manufacturing ready -mixed concrete and like
activities deemed to be similar in the process and/or in the exposure of raw materials, products, by-products, or waste
materials.
Page: 2

PmmN: NCG160181 Owner • Facility: Carolina Sunrock LLC
Insoection Date: 0525/2016 Inspection Type: Compliance Evaluation Reason for Visit Routine
Analytical Monitoring
Has the facility conducted its Analytical monitoring?
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas?
Yes No NA NE
❑ ❑ Cl
❑❑■❑
Comment: Last discharge and sampling was on November 11 2011 There has been no discharge from
the outfall since then.
Permit and Outfalls Yes No NA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? ■ ❑ ❑ ❑
# Were all outfalls observed during the Inspection? 0 ❑ Cl ❑
# If the facility has representative outfall status, is it property documented by the Division? ❑ Cl E ❑
# Has the facility evaluated all illicit (non stormwater) discharges? ® Cl Cl ❑
Comment: The facility certifies annually for annual evaluation of non storwwater discharge_
Qualitative Monitoring Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi-annually? ! ❑ ❑ ❑
Comment:
Stormwater Pollution Prevention Plan
Yee No NA NE
®❑ ❑ ❑
Does the site have a Stormwater Pollution Prevention Plan?
# Does the Plan include a General Location (USGS) map?
❑ ❑ ❑
# Does the Plan include a "Narrative Description of Practices"?
E ❑ ❑ ❑
# Does the Plan include a detailed site map including outfall locations and drainage areas?
®❑ '❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
0 ❑ ❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
N ❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
❑ El El
®❑ ❑ ❑
# Does the Plan include a BMP summary?
®❑ ❑ ❑
# Does the Plan include a Spill Prevention and Response Plan (SPRP)?
# Does the Plan include,a Preventative Maintenance and Good Housekeeping Plan?
0 ❑ ❑ ❑
# Does the facility provide and document Employee Training?
0 ❑ 0 ❑
# Does the Plan include a list of Responsible Party(s)?
N ❑ ❑ ❑
■ ❑ ❑ ❑
# Is the Plan reviewed and updated annually?
# Does the Plan include a Stormwater Facility Inspection Program?
M ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented?
®❑ ❑ ❑
Page: 3

Permit: NCG160161 Owner- Facility: Carolina Sunrock LLC
Inspection Date: 05/25/2016 Inspection Type : Compliance Evaluation Reason for Visic Routine
Stormwater Pollution Prevention Plan
Yea No NA NE
Comment: Annual employee training is documented in a Microsoft Word File. The General Permit requires
that annual training shall be documented by signature and printed or typed name of each
employee trained.
Page: 4

JAGMA
NCDENR
Division of Energy, Mineral and Land Resources
Land Quality Section
National Rol lutent Discharge Elimination System
NCG140000
Poll AGENCY USE ON LY
oae RaxNed
V®r MRei D
Catirx'ffi atCme
choke I Amart
Poimlt A61 b
NOTICE OF INTENT
National Pollutant Discharge Elimination System application for coverage under General Permit
NCG140000:
STORMWATER AND PROCESS WASTEWATER bISCHARGES associated with activities classified as:
SIC (Standard Industrial Classification) Code: 3273 and like activities - Ready Mixed Concrete
This NOI may be an application to discharge process wastewater. NCG140000 contains effluent limitations for
process wastewater discharges. Wastewater discharges must meet the requirements of these effluent
limitations. An exceedence of any of these limitations will result in a violation of the permit conditions.
For questions, please contact the DEMLR Central Office or Regional Office In your area. (See page 6)
(Please print or type)
1) Mailing address of owner/operator (official address to which all permit correspondence will be
mailed): (Please print or type all entries in Misapplication form.)
Legal Owner Name
(Please attach the most recent Annual Report to the NC secretary of state showing the current legal name. Ahematively th/s
permit can be given to an Individual.)
Signee's Name (as signed for in question 29 below)
Street Address
City State ZIP Code
Telephone No. Email
Alternate Contact Name Email (if different)
Alternate Contact Telephone (if different)
2) Location of facility producing discharge:
Facility Name
Facility Contact
Street Address
City State ZIP Code
County
Telephone No. Fax:
3) Physical location Information:
Please provide narrative directions to the facility (use street names, state mad numbers, and distance and
direction from a madway intersection).
(A copy of a county map or USGS quad sheet with faculty clearly located on the map Is a regtflred part of ths application.)
4) Latitude Longitude (deg, min, sec)
5) This NPDES Permit Application applies to the following (check all that apply):
❑ New or Proposed Facility Date operation is to begin
❑ Existing Facility - Permit#
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NCG140000 N.O.I.
6) Consultant's application Information:
Consultant: _
Consulting Firm:
Mailing Address:
City:
State:
Phone: (_).
Email:
Zip Code:
Fax: (_)
(Optional)
Staple Business Card Here:
7) Provide the 4 digit Standard Industrial Classification Code (SIC Code) that describes the primary
Industrial activity at this facility:
SIC Code: _
8) Provide a brief description of the types of industrial activities and products produced at this facility:
(Attach a site diagram showing the process areas present at this facility.)
Stormwater Discharae Wastewater Treatment & Discharge and Permitting Information
9) Discharge points I Receiving waters:
Number of discharge points (ditches, pipes, channels, etc.) that convey stormwater and/or wastewater from
the property:
Stormwateronly: Wastewster-only:_ Waste water Commingled with Storm water_
For new facilities: Expected date of commencement of discharge:
What is the name of the body or bodies of water (creek, stream, river, lake, etc.) that the facility stormwater
and/or wastewater discharges end up in?
Receiving water classification(s), if known:
If the site stormwater discharges to a separate storm sewer system, name the operator of the separate storm
sewer system (e.g. City of Raleigh municipal storm sewer).
Will this facility discharge wastewater to SA(Shellfishing) waters? ❑Yes ❑No
Note: Discharge of process wastewater to receiving waters classified as WS-II to WS-V or SA must
be approved by the N.C. Division of Water Resources, Public Water Supply Section. If DWR
does not approve, coverage under NCG140000 cannot be granted. No ne discharges of
process wastewater are permitted in receiving waters classified as WS-1 or freshwater ORW.
10) Each applicant shall provide the following Information (attach additional sheets as necessary):
Two (2) site plans depicting the facility or site with numbered ouffalls which Indicate stormwater and
wastewater outfalls. The plans shall legibly show. at a minimum, (existing or proposed):
o Outline of drainage areas with topographical lines and features
o Stormwater/wastewater treatment structures
o Location of numbered stormwater/wastewater outfalls (corresponding to which drainage areas)
o Runoff conveyance structures
o Areas and acreage where materials are stored
o Impervious area acreages
o Location(s) of streams and/or wetlands the site is draining to, and any applicable buffers
o Site property lines, North Arrow, and bar scale
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NCG140000 N.O.I.
If applicable, the 100-year floodplain line
Acreage of each stormwater and wastewater topographical area
Each of the facilities' wastewater or stormwater source and discharge structures and each of its
hazardous waste treatment, storage, or disposal facilities
o Site location (insert)
Site plans shall be 24"x 36" in size.
Line drawing and description: A line drawing of the water flow through the facility. A pictorial
description of the nature and amount of any sources of water and any collection and treatment measures.
A narrative description and identification of each type of process, operation, or production area which
contributes wastewater to the effluent for each outfall, and a description of the treatment the wastewater
receives (or will receive), Including the ultimate disposal of any solid or fluid wastes other than by
discharge. Processes, operations, or production areas may be described in general terms (e.g. "ash
silo").
11) Does the applicant have any unresolved Notice of Violations (NOVs)?
❑ No ❑ Yes
Wastewater:
12) What types of wastewater does your facility generate or discharge?
Generate
Discharge:,
Sentto WW G
�Typefof Authorized Wastewaterr .,'
�"
rea'tment-
m>-
Vehicle and equipment cleanin VE
El
Wetting of raw material stock iles RM
MI)dng drum cleaning MD
Further explanation, if necessary.
13) WIII your facility spray -down or actively wet aggregate plies'?
❑ No ❑ Yes
14) Does the facility use any of the following on site?
❑ Phosphorus -containing Detergents
❑ Brighteners ❑ Other Cleaning Agents
❑ Non -Phosphorus -containing Detergents
❑ Other:
15) Are wastewater treatment facilities planned in the 100-year Flood plain?
❑ No ❑ Yes
16) Does your facility use or plan to use a recycle system, or recycle components in your treatment system?
❑ Yes ❑ No
if yes, what size storm event is the system designed to hold before overflo Wng7 (for -example, 10-yr, 24-hr)
year, 24-hr rainfall event
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NCG140000 N.O.I.
17) Will your facility build a closed -loop recycle system that meets design requirements In 15A NCAC 02T
1P. .1000 and hold your facilltles' working volume'?
❑ Yes ❑ No
Will your facility discharge wastewater to surface waters?
❑ Yes ❑ No
If the Facility's treatment system meets the design requirements of 15A NCACO2T .1000 (including
holding the 25-year, 24-hour storm plus one foot of freeboard), holds the working volume of your site,
and does not discharge wastewater to surface waters, you may not be required to obtain an NPDES
permit for wastewater discharges. If you believe this is the case, please contact DEMLR's Aquifer
Protection Section Land Application Unit Central Office Supervisor or staff (1636 Mail Service Center,
Raleigh, NC 27699-1536) for more information on obtaining the necessary permits or approvals. If you will
discharge wastewater or stormwater to surface waters, please continue to apply for a permit to discharge
associated with ready -mixed concrete or like operations under NCG140000. For further questions, please
contact DEMLR's Stormwater Permitting Unit Staff.
18) A wastewater treatment alternatives review is required by 15A NCAC 2H.0105 (c)(2) for any new or
expanding water pollution control facility's discharge in North Carolina. You may attach additional sheets.
a) What wastewaters were considered for this alternatives review? ❑ VE ❑ RM 0 MD
b) Connection to a Municipal or Regional Sewer Collection System:
I) Are there existing sewer lines within a one -mile radius? ..................................... 0 Yes ❑ No
(1) If Yes, will the wastewater treatment plant (W WTP) accept the wastewater? .... ❑ Yes ❑ No
(a) If No, please attach a letter documenting that the W WlP WII not accept the wastewater.
(b) If Yes, is it feasible to connect to the W WTP? Why or why not?'
c) Closed -loop Recycle System (must meet design requirements of 15A NCAC 2T .1000):
I) Are you already proposing a closed -loop recycle system (CLRS)? ❑ Yes 0 No
(1) If Yes, contact DEMLR's Aquifer Protection Section's Land Application Unit
(2) If No, is this option technologically feasible (possible)? Why or why not?'
(3) If No, is it feasible to build a CLRS on your site? Why or why nor?'
(4) What is the feasibility of building a CLRS compared to direct surface Water discharge?'
d) Surface or Subsurface Disposal System (e.g., spray irrigation):
i) Is a surface or subsurface disposal technologically feasible (possible)? .................... 0 Yes ❑ No
' See DWQ's Aquifer Protection Section Land Application Unit's Water Balance Calculation Policy for more Information, on DWQ LAU's
website htto'//oortal mdenr om/web/wa/aos/IaWoolicies for mareInformation.
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NCG140000 N.O.I.
Why or Why nor?
il) Is a surface or subsurface disposal system feasible to implement?*...........................0 Yes ❑ No
Why or Why nor?
iii) What is the feasibility of employing a subsurface or surface discharge as compared to a direct
discharge to surface waters?'
e) Direct Discharge to Surface Waters: Is discharge to surface waters the most environmentally sound
alternative of all reasonably cost-effective options of the wastewaters being considered?'... 0 Yes 0 No
f) If No, contact DEMLR's Land Application Unit to determine permitting requirements.
f) If this review included all wastewater discharge types, would excluding some types (e.g. raw
stockpile wetting) make any of the above non -discharge options feasible?..............0 Yes 0 No
You maybe asked to provide further information to support your answers to these questions after the initial review.
Feasibility should take into account initial and recurring costs.
Stormwater.
19) Does this facility employ any best management practices for Stormwater control? ❑ No ❑ Yes
If yes, please briefly describe:
20) Does this facility have a Stormwater Pollution Prevention Plan? ❑ No ❑ Yes
If yes, when was it implemented?
21) Are vehicle maintenance activities (VMA) occurring or planned at this facility? ❑ No ❑ Yes
If yes, does your VMA area discharge into your wastewater treatment device? ❑ No ❑ Yes
OtherlPermittino:
22) Does this facility have a Division of Land Resources Erosion & Sedimentation Control (E&SC) Permit?
❑ No ❑ Yes
If yes, list the permit numbers for all current E&SC permits for this facility.
23) Is your facility subject to Phase II Post -Construction Area? O Yes ❑ No
If yes, who is the permitting authority?
24) Is your facility located in one of the 20 Coastal Counties? 0 Yes ❑ No
Is your facility adding more than 10,000 fe of built -upon area or CAMA Major Permit? ❑ Yes ❑ No
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NCG140000 N.O.I.
25) Is your facility discharging wastewater (treated or untreated) such as water from wetting of aggregate piles,
drum rinse -out, or vehicle and equipment cleaning to a stormwater BMP? ❑ No ❑ Yes
If yes, please attach your approval from the permitting authority to do so.
26) Does this facility have any other NPDES permits? ❑ No ❑ Yes
If yes, list the permit numbers for all current NPDES permits for this facility:
27) Does this facility have any Non -Discharge permits (ex: recycle permits)? ❑ No ❑ Yes
If yes, list the permit numbers for all current Non -Discharge permits for this facility.
28) Hazardous Waste:
a) Is this facility Hazardous Waste Treatment, Storage, or Disposal Facility?
❑ No ❑ Yes
b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of
hazardous waste?
❑ No ❑ Yes
c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of
hazardous waste?
❑ No ❑ Yes
d)
Type(s) of waste:
How is material stored:
Where is material stored:
How many disposal shipments per year:
Name of transport / disposal vendor: _
Vendor address:
Final Checklist This application will be returned as Incomplete unless all of the following items have been Included:
❑ Check for $100 made payable to NCDENR.
❑ This completed application and all supporting documentation. See Question 10.
❑ If an Erosion 8. Sedimentation Control (EBSC) Plan is required from Division of Land Resources (DLR)
or local designee: documentation verifying applicant has developed and submitted that Plan to the
governing agency (required per 15A NCAC 02H .0138).
❑ Two (2) site plans depicting the site plan with numbered outfalls which Indicate stormwater and wastewater
outfalis. See Question 10.
❑ A county map or USGS quad sheet with location of facility clearly marked.
29) Signatory Requirements (per 40 CFR 122.22)
All apptcatione, reports, or Information submitted to the Director shall be signed and certified.
a. All notices of Intent to be covered under Ws General Permit shall be signed as follows:
(1) For a corporation: by a responsible corporate officer. For the purpose ofthis permit, a responsible corporate officer meaner (a) a president,
secretary, treasurer or rice president of the corporation in charge of a principal business function, or any other person who performs similar
poky or decision making functions for the corporation, or (b) the manager of one or rare manufactudrig production or operating faciities
employing more than 250 persons or having gross annual sales or expenditures exceeding 25 million (in second quarter 1990 dollars), If
authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or
(3) For a municipality, state, federal, or other public agency by either principal executive officer or ranking elected official.
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NCG140000 N.O.I.
Certification: North Carolina General Statute 143-215.6 B(i) provides that:
Any person who knovbngly makes any false statement, representation, or cerdfiw0on in any applubon, record, report, plan, or other
document filed or mqumd to be maimeined under this Article or a rule Implementing lHs Article; or who knowingly makes a false statement of
a material fact In a rulemakirg proceeding orconlested case under this ANcle; orwho falsifies, tampers with, or knoWngly renders Inaccurate
any recomkg or moritoring de*e or method regdred to be operated or maintained under tins Article or rules of the IEnAronmental
Management) Commission Implementing this Article shall be gully of a Class 2 misdemeanor which may Include a fine not to emeed ten
thousand dollars ($10,000).
I hereby request coverage under the referenced General Permit. I understand that coverage under this permit will
constitute the permit requirements for the discharge(s) and is enforceable in the same manner as an Individual
permit.
I certify that I am familiar with the information contained in this application and that to the best of my knowledge
and belief such information Is We, complete, and accurate.
Printed Name of Person Signing:
Tide:
(Signature of Applicant)
(Date Signed)
Notice of Intent must be accompanied by a check or money order for $100.00 made payable to: NCDENR
Mall the entire package to:
Stormwater Permitting Unit Program
Division of Energy, Mineral and Land Resources
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
Note
The submission of this document does not guarantee the issuance of an NPDES permit.
For questions, please contact the DEMLR Regional Office for your area.
DEMLR Regional Office Contact Information:
Asheville Office ...... [phone]
Fayetteville Office ... [phone]
Mooresville Office ... [phone]
Raleigh Office......... [phone]
Washington Office ...[phone]
Wilmington Office ... [phone]
Winston-Salem ...... [phone]
Central Office .........[phone]
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