NCG140046_COMPLETE FILE - HISTORICAL_20190603

STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO. /V
DOC TYPE L� HISTORICAL FILE
MONITORING REPORTS
DOC DATE I , 00, 1 D(0 0 3
YYYYMMDD

Ja�t�.o stq�s -
• UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
�• r = REGION 4
ATLANTA FEDERAL CENTER
61 FORSYTH STREET
�yT4C PRONG ATLANTA, GEORGIA 30303-8960
MAY 2 8 2019
CERTIFIED MAIL 7017 1450 0000 7973 2779
RETURNED RECEIPT REQUESTED
RECEI �1.1)
Mr. Gus Segura
Operations Manager
Concrete Supply Company .
P.O. Box 5247
Charlotte, North Carolina 28299
Re: Compliance Evaluation Inspections
Concrete Supply Company, Lincolnton, NC
NPDES Permit No. NCG140046
Dear Mr. Segura:
JUN 03 2019
DENR-LAND QUALITY
STORMWATER PERViiT"i ING
On March 19, 2019, the U.S. Environmental Protection Agency Region 4 and North Carolina
Department of Environmental Quality (NCDEQ) conducted a Compliance Evaluation Inspection (CEI)
at the Concrete Supply Company facility located at 831 South Madison Street in Lincolnton, NC. The
purpose of the CEl was to evaluate Concrete Supply Company facility's compliance with the
requirements of Sections 301 and 402(p) of the Clean Water Act (CWA), 33 U.S.C. §§ 1311 and
1342(p); the regulations promulgated thereunder at 40 C.F.R. § 122.26; and, the State of North
Carolina's NPDES General Permit NCGI 40046.
The EPA appreciates your cooperation in conducting this CEI. Enclosed is the EPA's CEI report, which
includes EPA's observations made during the CEI and to evaluate the facility's compliance with the
CWA. As a result, the EPA may be in further contact with Concrete Supply Company in the future.
While a response from you is not required at this time, if you do wish to respond to the CEI report,
provide additional information, or otherwise discuss the report, please contact Mr. Ahmad Dromgoole at
the above address, by email at [e-mail], or at [phone].
Sincerely,
Daniel J. O'Lone, Chief
Surface Water and Ground Water Section
Water Enforcement Branch
Enclosures
cc: Ms. Annette Lucas
NCDEQ
Internet Address (URL) • http://www.epa.gov
Recycled/Recyclabie • Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 30% Postconsumer)

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FACILITYIDATA
sNP.DESlD NGG 041 046 Effective Date;
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INSPECTION
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NAMES OF EPA AND STATE INSPECTORS
FEIRA1[ pecto� 2Ahma©romgoole�tKcnneth'Kwan4.:.�: ,,r. y'^:'i` �F.' "tarlh zap:-:,.ca^�'^
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AREASas evaltialed)
DURING
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K l)lermit_is''�`t� ref+� ,SelfgCom ]ianceYPio rami#+'t�:t. r"tr_i 'Pretreatment
�{L �,Records� `• E:;i: Wit, a. t� � s•�
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:t;. ; , Poilu'tion, 6eyentionb :�,;,.�"
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liabotato ,' ' '
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O�'eratlonsi&:Maintenance"'
- ,;, iimh ewer O' °erflow' _r
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INSPECTION NOTES
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;;The mpe�cto teamconsstrtng of EPA mspecto'rs and 4tate:inspectors from variotis, regional offices, arr{ved at•the''acility onMc ;
,, 20p9;to perform u�nannour ell Compliance:EvaIuation�lnspections(CEl) This GEI'was perforrried•as both•a.Jotntyrnspection,l.�
:t � C
�wrthdhe state andga.trarmngdopportun�tyfor state inspectors. Upon arnvaE 3E,the facility, EPA,inspectors,presented`credent=als and'
nglo
f c litated an` p n ng rarer nceT}ie CEftin laded bot}i aiTecord's r'e'view portion"andfia facility walk tlirough.•'Upon corripletIonban'1
exrt`conference wasaheld with facility personnelinrwhich#ey";were informed of EPA �s preliminary' finding`s and told that an actualG�, ;
i,mspeetion report wjll.beUTit:to;the facil?ty1tiy EPA:r----- �•-•--- -•- - -- -1 --•- -- -�- - �� - - y ---- ��`
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EPA REPRESENTATIVES
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USEPA�`Region 4/WPD'CWEB-SRES
404i562-9212
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`Afi am df 3_goola,Environtiiental'-"Engineer;': ';i1-1+':+37•.}�3
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-USEPA•Region 44PD=C-WEB-SRES
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;Kenneth "Kwan,,Environmental Engineer
404-562-9752
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Management S•g•atu•elName,'f,,�,�
POffce Phone Number �.
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USEPA'Region�41WPD''CWE&SRES
404-562=9434
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Dana J70' i,on r
y'Stor,mwater�a-nd-Residuals Enforcement Section.... „..
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GPS
Latitude 35°27'37.67"N Longitude
81°15'36.30"W
Coordinates
_
Receiving
South Fork Catawba
Site
-Weather
Wafers) or
River
Acreage
3.5 acres
Condition
Clear skies,
IVIS4;
Date of NOI (or
Dischaige to-
Does the site discharge
No Exposure
N/A
SIC
3273
303(d) listed
No
pollutants contriliutiing ;
-
NIA
Exclusion,per
Code(s)
o_ r TMDL
to the re_ceiving;sfreaih
122.26
waters
impairment?
1' P! �• INFORMATION
SPPP TOPICS (Part-111) -- _ -- - _ .. -- YES
NO N/E
SPPP on -site (obtain a copy of the plan) Section 9
X
A copy of the SPPP date December 15, 2011 was made available onsite for review during the
inspection.
Site Description Section I
X
Identify potential Pollutant Sources and Particular Pollutants Section I(b)
X
From the review of the SPPPP it appears that the necessary pollutant sources were identified.
,
Site Maps (general location map and site specific map) Section I(c)
X
A site map was included with the plan and included information about the receiving waters, discharge
points, site boundaries, site topography, drainage features and Flow directions, industrial activities,
and site best management practices (BMPs).
Spill History (3 year history or spills and corrective actions) Section 1(d)
X
A spill history log was maintained by the facility and kept in its SPPP. This document, seen in photo
DSCN 1836, appear to document the necessary information and appears to have been updated
annually.
SPPP Certification Section 1(e)
X
The annual certifications were available at the site with the most recent certification being dated
01 /09/ 19.
Stormwater Management Strategy (Feasibility Study) Section 2(a)
X
Page 2-1 of the SPPP lists the procedures for conduction annual feasibility study. However, no records
of any feasibility study findings and conclusion are discussed in the SPPP.
Stormwater Management Strategy (Secondary Containment) Section 2(b)
X
Per the facility's permit, the site plan should include a table or summary of the above storage tanks
and their associated secondary containment. The summary should include the capacities of both the
tanks and the containment structure.
Stormwater BMP Summary Section
X
Include all structural and non-structural BMPs at the site)
Spill Prevention & Response Procedures (SPRP) Section 3
X
Preventative•Maintenance and Good Housekeeping Program Section 4
X
Employee Training Section 6
X
Identify the Responsible Party Section 7
X
Page 2 of 8

i !' ! 1' !
SPPPTOPICS':(Part
SPPP Modified or Update to Current Conditions Section 8
X
The SPPP provided during the inspection was from 2011. The review of the plan showed that it was
not current to the conditions of the plan including, but not limited to, an in number of outfalls
(plan says 3 while the facility only considered 1 active) and the additional berm structure in the
southeast corner of the site for eliminating outfall #2.
Schedule and Procedures for Routine Inspections Section 5
X
Routine facility inspections are conducted semi-annually.
Concrete Supply Company operates a ready -mix concrete facility in Lincolnton, NC. Operations at this site began around
1970 and currently entails the operation of one mixing plant 5-6 days/week for one shift per day. Raw materials and products
from the site are moved by truck. Raw materials for the process include, but are not limited to, sand, gravel, fly ash, cement,
and chemical admixes. Except for the cement and admix chemicals, raw materials are stored outside in open storage piles.
The cement received at the site is loaded onto a belt conveyor and sent to one of the storage silos feeding the process. Admix
chemicals are maintained in outdoor storage tanks and totes that are connected to the process by }pose or pipe.
The ready -mix plant consists primarily of a mixing process that loads concrete trucks. The raw materials are loaded into the
process from the loading bins. The loading bins are feed by conveyors which are manually loaded. The aggregate is loaded
into the concrete trucks where it is then mixed with water. The trucks are then washed off and delivered to the site. Concrete
Supply operates its own trucking fleet so upon delivery of a shipment, trucks return to the site so that they can be cleaned
and either reloaded or parked. The drum cleaning process entails the dumping to ground of any residual concrete and a drum
washout at the end of the day. The residual concrete dumped to ground is allowed to dry, re -crushed, and returned to the
process. The rinse water from the truck drums is then released to the facility's concrete washout basin.
The potential permitted discharges from this facility include both stormwater and process wastewater. According the
facility's SPPP, water from the site can be released through one of three outfalls. During the inspection, the facility informed
EPA that it only operated/monitored one outfall at the site currently and that most of the process wastewater from the drum
washout basin is either recycled to the process, used for dust suppression, or discharged to the City of Lincolnton's sanitary
sewer system.
RECORD4.
Record Review _
YES
NO.
/E
Representative on -site
X
Records of the obtaining of a Certificate of Coverage (COC) Part I, Section B
X
The COC, in response to the submission of the NO[ and other necessary documents, was issued to
the facility on 04/11/2014.
List of detergents, additives, polymers, brighteners, and cleaning agents Part II Section B(9)
X
A list of the various chemicals and admixes used in the process were provided in Appendices 13-1 and
of the facility's SPPP.
LB-2
ecords of the Implementation of the SPPP Part III Section 9, Part V Section D(6)
X
Page 3 of 8

Record Review F Y - - .. -
' YES'
NU
N/E
Maintenance and Housekeeping Programs Part III Section A(9), Part V Section D(6)
X
The permit requires records be maintained'pertaining to the maintenance and housekeeping activities
performed at the site as part of its SPPP. During the inspection, records pertaining to various
housekeeping and maintenance activities including sweeping/routine clean-up and concrete washout
basin maintenance were requested. According to the facility, documentation of these housekeeping
practices were not maintained by the facility.
Records of Routine Inspections Part III Section A(9), Part V Section D(6)
X
Records of facility inspections were reviewed back through 2017. The semiannual inspection report
from 09/2018 can be seen in photos'DSCN3865-DSCN1867. These records showed the facility not
documenting period inspections of the believed to be eliminated outfall near the southeast corner of
the facility (which was observed as not having a water tight diversion or containment structure in
place). Additionally, records were not available for the 3' quarter 2016 inspection.
Records of Employee Training Part III Section A(9), Part V Section D(6)
X
Employee training records were reviewed back through 2017. During the review, training records for
2018 were not available.
Approval of Representative Outfalls _ Part III Section D(5), Part V Section D(6)
The facility had not requested the approval of a representative outfall.
X
Records of Benchmark Monitoring Part IV
X
According to Part 1I, Section 13(8) of the permit, all discharges of process wastewater should be
monitored in accordance with Part IV Section D of the permit. Part IV of the permit outlines
monitoring requirements for both stormwater and wastewater discharges. One notable difference
between stormwater and waste water requirements is that stormwater requires monitoring during a
measurable storm event at least 72 hours after the previous measurable event. Wastewater simply
requires monitoring within 30 minutes of the start of discharging. Additionally, wastewater
monitoring includes testing for effluent limitations and the inclusion of flow rate monitoring (for
facilities discharging to specific stream types).
When monitoring records were requested during the inspection, the facility stated that there had been
no discharges from the site meeting the requirements of measurable rain events in over five years.
When asked how the outfall was monitored for discharge, the facility stated that a contractor comes
to the facility when there is a rain event to observe the outfall. It was not clear as to how long the
contractor remains at the site but there was no way for the facility to know if there was a discharge
from the outfall at any point.
Although'the facility claimed that there were no discharges occurring from the site, evidence was
observed of likely past discharges at outfalls at the site.
Records of Qualitative Monitoring Part IV Section C
The facility claimed that there had been no discharges from the site in 5 years. As a result, there would
X
have been no records of qualitative monitoring.
Records of Tiered Approach to Benchmark Exceedances Part III Section 1)(5), Part V
Section D(6)
The facility considered outfalls from the site to be commingled stormwater and wastewater outfalls;
X
therefore, would be required to meet the wastewater effluent limits. The tiered approach is only
applicable to benchmark exceedances at the outfalls.
Page 4 of 8

' ECORD REV IEW
Record Review r YES
rgy,t 1.,_$ fKTh ,`
NO :
'N/E
Records of Stormwater Bypasses Part V Sections C(3)
The facility claimed that there had been no discharges from the site in 5 years. As a result, there would
X
have been no records of stormwater bypasses.
Records of Wastewater Bypasses Part V Sections C(4)
The facility claimed that there had been no discharges from the site in 5 years. As a result, there would
X
have been no records of stormivater bypasses.
Records of 24 hr Reporting Part V Sections E(8-10)
According facility personnel, there had been no incidences since 2017 requiring reporting within 24
X
hrs.
1IMPLEMENTATION
7`1"''
Note locahou, qua3ntitative descr�pt�on, desi n'issue O&M deficiencies (iiueluding the..
g
I Pollutant Sources .
nature and ' extent}, and pollutants off=site €
Cement at the site is received by truck and loaded into one of the two storage silos. The loading
hopper for these silos is located near the southeast corner of the facility and can be seen in photo
DSCN1858. The loading hopper is loaded with a front loader and transferred the material to the.
J. 'x f
silos via the belt conveyor seen in photo DSCN 1859. At the top of the belt conveyor, a switch
was in place to direct the material from the belt conveyor to the appropriate silo.
LoadinglUnloadeng yp ,.
The loading hopper was located near the crest of a hill leading to the stream. Sediment
Area l z ,
accumulation was observed along the ground in this area which drains towards the stream as
t r�'
seen in photo DSCN1858. -
The 'area between the conveyor belt to the storage silos has large amount of sediment deposit.
along the ground as seen in photo DSCN 1859. This area near outfall #2 also drains towards the
stream.
Raw M=Aaiistorage
The sand, gravel, and fly ash used at the facility are stored in outdoor storage piles near the
��<¢F
��Racilit�es �
southside of the site (see photos DSCN1853-DSCN1854). These storage piles were located
within three sided walled structures which are accessible by front loader.
Concrete Supply operates one mixing plant at the Lincolnton facility. The mixing plant has a,
r1a'•
s
`Outdoocess
series of feed hoppers that feed the appropriate mix of raw materials to the mixing cell. These.'
Pam,
rro
y� g�. }rx t , -
;4perations
hoppers are recharged by a belt conveyor that is manually loaded by front loader. Photographs:
DSCN1863-DSCN]864 shows the truck loading area of the concrete mix plant. The feed
hoppers to the plant can also be seen in these photos.
The ready -mix concrete process involves the transport and handling of sand and gravel like
x
materials. These materials are typically manually transported around the facility resulting in the
^Aousekeep
spilling and tracking of material. During the site visit, areas of the site were observed with
nng
_ K ...
significant material deposition appearing to be needing additional housekeeping. This include
the area around the cement silos and loading conveyor near the southeast corner of the site (seen.
in photos DSCN 1858-DSCN 1859).
Page 5 of 8

1 A
'.R C "."
'
93�T•T' r' { °'� r' �i .Y . vt-+rr, ' sa ..j t 1; � X— "4IT W TV mil' S•MTW. S 3y
�1\ot�eoRs _gnant,tatrve,des�cnpt�on, design issue;; O&M` defic�enc�eS{mcludeng the
PoElutant Sources :
nature and' dextent); and pollutants off site
Concrete Supply utilities above ground storage tanks. at the facility for vehicle fueling and
maintenance activities and for the storage of admix chemicals for the process. An equipment
fueling station was located along the west side of the property. In this area, an above ground
diesel tank was observed inside of a concrete secondary containment structure (seen in photo
DSCN 1852). A second area on the eastside of the site was observed with above ground tanks for
admix chemicals. This area included storage tanks and tote bins located within a concrete
secondary containment struck (see photo DSCN 1861). Smaller volumes of vehicle oil were also
Liquid Storage Tanks
maintained on site in 55-gal drums. This drum storage area, seen in photo DSCN1860, was
located along the east side of the property and was observed with shed cover and drums stationed
off the ground on spill catch pads.
The above ground storage tanks at the facility were located within a concrete secondary
containment structure. These two concrete structures were both configured with release valves
to drain accumulated liquid with in the structure. The drainage valves from the two structures
can be seen in photos DSCN1852 and DSCNI 862. These valves were observed without a locking
mechanism but did have the valve handles removed.
Stormwaterlwastewater runoff from this site is managed through the directing of the runoff to
the designated outfall. During the inspection, structural controls were observed around Outfall
# 1 and former Outfall #2. A rip rap berm was observed along the west side used to divert runoff
towards outfali # 1 (see photos DSCN 1845-DSCN 1846). This berm controls runoff from areas
of the site including the truck washing operation (seen in photos DSCN I 846-DSCN 1847) and
directs it to the outfall. At outfall # 1, a rip rap berm was in place to allow for the slowing/pooling
Best Management
of runoff allowing for the settling out of particulates (seen in photo DSCN 1837). The discharge
Practices (BMPs)
pipe for Outfall #1 can be seen in photo DSCN1844 which appears to discharge from the bottom
of the pooling area near the accumulation level of the sediment.
Near the southeast corner of the site, the facility previously operated Outfal 12. According to site
personnel, this outfall had been removed from operation for 2-3 years. To decommission this
outfall, a concrete barrier was put up in the low laying areas in this corner to divert runoff from
the stream. During the inspection, the concrete barrier was observed as not being water tight (see
photo DSCN 1857) was the was part of the facility's periodic inspections.
Spills/Leaks Handing
Spill kits were observed in the areas of the site with fluid storage. No evidence of past spills was
observed during the inspection.
Disposal/Waste
Once trucks return the facility, the residual concrete in the drums are emptied to the ground and
Handling Areas
allowed to dry. Once dry, the concrete is collected and stored so that it can be recycled to the
process. One of these outdoor storage areas can be seen in photo DSCN 1854.
G
Vehicle "
cMaintenance
No vehicle maintenance activities were observed during the inspection.
L a
Areas
R
Material
Stockpile
According to facility personnel, some of the dust suppression at the site is performed with
c3
Wetting
process water from the drum washout operation from the clear water pit. These operations were
p"
Operations
not observed during the inspection.
Page 6 of 8

Pollutant.Sou'rces
e e
Note' location, quantitative description, design issue, O&M deficiencies (including the'
nature and extent), and pollutants off -`site
Concrete trucks have their drums washed at the wash station in the southwest comer of the site.
(see photo DSCN 1848). Once rinsed, the wastewater from the drums are emptied into a concrete
washout basin to allow for the removing of.particulates. These series of concrete washout basins
Mixing Drum
can be seen in photos DSCN1849-DSCNI 851. If required, a pH treatment can be performed in
G{eahouts
the basin to adjust the pH prior to discharging. According to facility personnel, there is never a
discharge from the clear water pit at the end or the treatment series due to the facility's ability to
pump the wastewater from the pit to the City of Lincolnton storm sewer drain (seen in photo
DSCN 1850).
i e'
1 �' el; e
Outfall, Stormwater
Discharge & YES NO
Receivin _Water
Describe: According to the facility's site plan, there were three outfalls at the
on,
Lincolnton site. During the inspection, facility personnel stated that they currently
only operate Outfall 1 near the corner of the site (seen in photos
DSCN 1838, DSCN1844). Outfall # 1 discharged to a drainage feature, seen in photos
DSCN 1839-DSCN1843, leading to the tributary. In addition to the observing of silty
Nui6er.& location
material from the cement process in the ditch, there were also erosion features and
of stormwater
pooling water signaling the release of water to this drainage feature.
discharge(s)loutfali(s)
X
consistent with the
A second outfall was identified near the southeast corner of the site near the silo
SPPP
loading conveyor (see photos DSCN 1855-DSCN 1857). This outfall was considered
in the SPPP but according to the facility was removed and no long monitored under
the plan. During the inspection, the outfall did not appear to have been adequately
sealed to elimate potential discharges nor was it routinely monitored to ensure no
discharge. A third outfall was also listed in the SPPP which did not appear to be
currently active or in place at the site.
Evidence of off -site
accumulation of
X
Describe: No evidence of the offsite accumulation of pollutants was observed in the
pollutants observed_
tributary during the inspection.
in receiving water
Other potential
Describe: According to facility personnel, the facility is allowed to periodically
discharges to
off-site
pump. wastewater from the clear water pit to the City of Lincolnton's sanitary sewer
f-si
(through not:
X
system. This is a discharge point for process wastewater which was not discussed in
included in the
the facility's SPPP. Additionally, the facility neither obtained a pretreatment permit
SPPP) -
from the city, an official written agreement with the city, nor established a way to
monitor the amount and condition of the wastewater being sent to the city's system.
Describe: General Permit NCG140000 provides permit coverage for certain non-
Non-stormwater
stormwater discharges and process wastewater associated with only ,three distinct
discharge
X
industrial activities. However, the use of concrete wash water for dust control
throughout the site is not one of the authorized process wastewater discharges
specified in the permit.
Page 7of8

Additional inspection summary, narrative, findings, comments, photos, and schematic diagram of the facility area
as necessary:
An exit conference was held with Gus Segura were the following observations were relayed:
• SPPP Observations
o The site plan shows it last being updated in 2011
o The spill records in the plan did not include annual updates or dating
o The site plan showed in an inaccurate outfall count
o The site map did not include the receiving water or identify the catch basin near the outfall
o' No formal or signed agreement was providable between the facility and the City of Lincolnton allowing
for the discharging of the process water from the concrete washout ponds to the city's sewer system.
• Records Observations
o Review of the sampling records at the site showed sampling having not been performed for over five years
claiming that there has been no discharge from the site
o The facility was unable to provide housekeeping and maintenance records in addition to there being no set
maintenance and/or housekeeping schedule provided in the site plan
o Records of training from 2018 were not available
o Semiannual inspection records from early 2016 were not available
Site Observations
o Additional housekeeping and BMPs were needed in the area near the loading conveyor located near the
stream
o The valves on the secondary containment structures did not have a locking mechanism
o The outfall near the southeast corner of the facility, which the facility claims to have closed out, was not
water tight or properly bermed to assure there was no potential to discharge
o A concrete sheen/accumulation was observed in the City of Lincolnton's sewer man hole likely from the
discharging of concrete wash water to the sewer drain.
Page 8 of 8

SW-NCG140046-031919
j
Concrete Supply Company - Lincolnton Plant
831 Madison St
Lincolnton, NC 28092
Overview Map
CIA# hU-r-'9AnnA6 n91n1n " - -, , _,C-�

DSCN1836.JPG
j tti al.r14
$4 Y
�61 OF 9113I1 SPILLS ANI7 LEAK8 rrhnDlukd i,y
Tkiv
�rseti�c+ns Re. -or II dnsignWiLUMVypi X11(t�iynelrcatNlad
�aitaolluxlttKAualduee�yalleefa��htluet+w.a•r.••nr
a� me *fr*'ttur date vl the poffnh.
S 01"Cam spills Include but we txN 11hnlled to releases OiA Of c
iatr Llocitlan mat", 4Y.1'a'� Orr t Ww►, .,
. wMw1 «w.r To. al hlaut{a! lwfew, 111tnarn Fwan 14e.�.rrYO "'w' � a ti • r�
Year !• tot DnCtly<�a+ It opd'.a0 a•r:r".-•a
kirawlef anr•=ra�ar :�„rr,.+
Magda' :eft:'* nnk• rrrr.r•
L"wn t3aMm lteeo►yerf �`n,afa�s� •s•r
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�! soil Lttrt t�nec+t�+MMr —
n
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qm�'M
_ - --- - Attributes
File Name DSCN1836.JPG
Description Photograph of the annual significant spills and leak
Latitude
Ittra�
ter• .�L.1e rti- 41 r`f-�•�- r y,F. =:-4t
4� } - r .� } 1 .i 7 ' ., r. ' C y � •� }i V r Er r ivow
' �, ��'• '�'�� •}.=+i'�y:r.4M'�•'�'; .,�. * Ni� s '4+? Ee� � .4. • • `Y �y4 rf��K. � Lac r� : 3��1.�

DSCNI837.JPG
Attributes
File Name I DSCN1837.JPG
Description Photograph of the bermed area and inlet at Outfali 1. This outfall, located in the northwest cover
of the site, has the potential to discharge both stormwater and wastewater.
Latitude N 35" 27' 40.60"
i Longitude 1 W 81' 15' 38.43"

D5CN1838.)PG
Attributes
Fife Name I DSCN1838.JPG
Description Photograph of the outlet for Outfall 1. This outfall, located in the northwest cover of the site, has
the potential to discharge both stormwater and wastewater. The area downgradient of the outfall
had what appeared to be accumulated silty material from the concrete process.
Latitude N 35" 27' 41.38"
Longitude__ _ j W 81' 15' 40.91"

DSCN1839.1PG
Attributes
File Name DSCN1839.JPG
Description j Photograph of the ditch down gradient of Outfall 1 leading towards the creek. This area appeared j
to be accumulated silty material from the concrete process. Pooling water was observed in
locations in the ditch in addition to the evidence of erosion features.
Latitude N 350 27' 39.65"
Longitude 1 W 81° 15' 38.42"

Y
i.r r
Google Irr z2a19, N,

DSCN1841.JPG
W 81' 15' 38.25"
Is
f �.

DSCN1S42.JPG
Attributes
File Name DSCN1842.JPG-
Description Photograph of the junction between the creek and the ditch down gradient of Outfall 1.
Latitude N 350 27' 40.12"
ongitude W 81° 15' 38.76"

Game Googie O 1 -,t... 2019. Di;ts*Sc,.

Attributes
File Name I DSCN1844.JPG
Description Photograph of the berm and inlet to the pipe for Outfall 1, During the inspection, the facility side
of the berm had damp accumulated sediment to the level of the outfall pipe.
Latitude N 3S° 27' 39.S4"
Longitude W 81° 15' 37.48"

D5CN1845.JPG
17+�
Attributes
File Name DSCN1845.JPG
.Description Photograph of the berm along the river near the outfall.
Latitude N 35- 27' 39.45"
W 81' 15' 37.51"

DSCN1846.1PG
Attributes
File Name DSCN1846.1PG _
Description Photograph of wastewater from truck washing operations observed during the site running
towards the bermed area near the outfall.
Latitude N 35' 27' 39.07"
Longitude W 81' 15' 36.97"

DSCN1847.JPG
Attributes
File Name I DSCN1847.JPG
Description Photograph of wastewater from truck washing operations observed during the site running ;'
towards the bermed area near the outfall.
Latitude
Longitude
N 35' 27' 39.04"
W 81' 15' 36.99"

DSCN1848-JPG
E�
-7 �Wmo
File Name
Description
Latitude
Longitude
I
Attributes
DSCNI848.JPG
Photograph of the truck wash station near the concrete wash
N 350 27'36.32"
W.8l.'-15'39.12"-- -
'P

DSCN 1850.J PG
f
a•`
w
��
'r
N
{
l `
�
j
r
V�dler �
�• 1
Attributes
File Name D5CN1850.JPG
Description Photograph of the municipality's sanitary sewer manhole near the concrete washout station.
According to facility personnel, it periodically pump concrete washout water via a portable pump
into this sanitary sewer manhole.
Latitude N 35° 27' 37.25"
---
Longitude W 81° 15' 37.67"

DSCN1851.JPG
Attributes
File Name DSCN1851JPG I
Description Photograph of the final treatment cell (Bright well) of the concrete washout. The water from this
cell can be used in the process, dust suppression, or directed to the city sanitary sewer manhole.
Latitude N 35' 27' 37.30"
Longitude W 81° 15' 38-54" j

DSCN1852.JPG
Attributes
File Name DSCN1852.JPG _
Description Photograph of the diesel fuel tank and its secondary containment structure. A drainage valve
was observed in the secondary containment structure, The valve was closed at the time of the
inspection. Although a lock was not in place on the valve, the valve arm had been removed.
Latitude N 35' 27' 37.16"
Longitude W 81° 15' 37.49"

DSCN18S3.JPG
File Name
Description
Latitude
Lonp,itude
Attributes
DSCN1853JPG
Photograph of the outdoor material sto
N 35° 27' 36.50"
W 81' 15' 36.70"
Iles.

DSCN1854.JPG
File Name
Description
]�
• .
aLer ''A • :. '�
Attributes
DSCN1854.JPG — --
Photograph of the material storage piles. Some sediment tracking was observed from the sand
storage pile. A concrete waste storage area can be seen in the back of the photograph along the
south side of the property.
Latitude N 35° 27' 36.51"
Longitude W 81' 15' 36.76" --- --�-

DSCN1855.JPG
Attributes
File Name I DSCN1855.JPG --
Description Junction point with the stream and the old outfall from the site which was considered closed out
and removed from its permit requirements.
Latitude
Longitude
N 35' 27' 34.22"
W 81' 15' 34.22" -

DSCN1856.JPG
,. '�'
_ Ij .
'4
is r(F �� •. • L 4 .
Attributes �
File Name DSCN1$56.JPG
Description Down gradient from the former outfall leading to the stream.
Latitude N 35° 27' 34.40"
Longitude W 81- 15' 34.91"

DSCN1857.1PG
Attributes
File Name I DSCN1857.JPG
Description I Photograph of the area just down gradient of the removed outfall. The photo shows the concrete
blocks used to block off the outfall. The block structure was observed with gaps between the
blocks which would still allow for stormwater discharges.
Latitude N 35° 27' 35.00"
Longitude W 81` 15' 34.70"

DSCN1858.JPG
Attributes
File Name DSCN1858.JPG -
Description Photograph of the loading hopper to the storage silos. The loading hopper was located near the
crest of a hill leading to the stream. Sediment accumulation was observed along the ground in this
j area which drains towards the stream.
Latitude
Longitude
N 350 27' 35.51"
W 81' 15' 35.04"

DSCN1859.JPG
Attributes
File Name DSCN1859JPG
Description Photograph of the loading conveyor to the storage silos. The loading hopper was located near the
crest of a hill leading to the stream. Sediment accumulation was observed along the ground in this
area which drains towards the stream.
Latitude N 35.27' 35.53"
Longitude i W 81' 15' 35.04"

DSCN1860.1PG
Attributes
Fife Nam DSCN1860Ji'G
Description Photograph of the covered area used for oil storage. oil drums were observed on secondary
containment structures and underneath cover.
Latitude N 35' 27' 37.07"
'Longitude 1 W 81' 15' 35.05"

DSCN1861.JPG
'
41 J.r
s 17
6 t]
•� 1
_. -- - --�
File Name D5CN1861.JPG Attributes
Description Photograph of the outdoor chemical storage area and tanks. The tank area had a secondary
containment structure with a release valve. The valve, which was observed with the valve handle
removed, was observed closed during the inspection.
Latitude N 35' 27' 37.18"
Longitude - W 81' 15' 35.04"

u y
r��;
{ ,«
1 ! �'p t76
Attributes
Pile Name D5CN1862.JPG
Description Photograph of the outdoor chemical storage area and tanks. The tank area had a secondary
containment structure with a release valve. The valve, which was observed with the valve handle
removed, was observed closed during the inspection.
N 35' 27' 37.43"
Longitude Lw 81° 15' 34.91"

DSCN1863,1PG

{
Y
i
f �ti l •.
Attributes
File Name.j D5CN1864 JPG - -- - - -
Description Photograph of the truck loading operation.
Latitude N 35° 27' 37.76"
--Longitude W S1° 15' 36.42"_-

DSCN1865.JPG
Attributes
File Name I DSCN1865.JPG
Description � Photograph of the most recent semiannual inspection performed at the fac
Latitude
Longitude

DSCN1866JPG
Attributes
File Name I D5CN1866.JPG
Description Photograph of the most recent semiannual inspection performed at the facility.
Latitude
Longitude

a
DSCN1867.JPG
Ad►rtinistre;iy8:
NOV Yes No
File Name
Description
Latitude
Longitude
�nrltOnm ntrt4lna �`..lir�rl
K is the Ah etrnit_xvaila4le in rttanatTer gtlite
K_ _ Is the Air _permit current
K Are pFessure reatlin�s dac�lmcrHr#�y_Nlagn,�h�Heu�e;a�drs.
Are dust calteat r�maintpna;►c ka !naEntaw+ed,u�ig dxty�andavurxbie
X Roes sh__e plant we a tM_rt ftk Sv�P3an
x Stormw�ter_ an m�di;ic� alion 1g up tg40t
x - Ss there a copy �1 the Storo+ Water Gen�tai t4'? t}!t� nt
X - Is there Certititate-at Gavar
in here a si�rred Cart�fi ptiOpliai!-kgk�,inti iP.3p
wl
ry p�u hotsration tArit� yuutisrdf!+# In tires 3 NMI"
X is tl_ rere a st n
Visualpbserva tibns®.i�R+~S�eterstor!htan�
X
X Sto� rm Water anPCC tfaining_uEt
5�... -•a t4to
r.: _..le;.•�nt Leakty anill5 C ... -
Non^ wamwatg� Ceram i n u�tQ�� tlulln c��
X At least�_two� t lin fat IranitakeFtl�Inln�
ali tive�a nQ _ 1. t -•� r
"an
andt tin c ^^�)iSfn
Anal tical s hl SPCC ins�le.�'"
X Weekl anli Mo Y�...- ta•date
p he _� _ - -" fiw4► 1►1- ii t �-
pre the monthl Y�ariy�s�nd _. w -, _ .
N p
Attributes
DSCN 1867.J PG
Photograph of the most recent semiannual inspection performed at the facility.

A�
NCDENR
North Carolina Department of Environment and Natural Resources
Pal McCrory
Governor
Mr. Johnie Alexander
Concrete Supply Co., LLC
P.O. Box 5247
Charlotte, NC 28299
Dear Mr. Alexander:
John E. Skvarla, III
Secretary
April 11, 2014
Subject: NPDES General Permit NCG140000
Certificates of Coverage —See attached list
Concrete Supply Co., LLC
Formerly Concrete Supply Co.
Counties - Multiple
Division personnel received your request to revise your stormwater permit Certificates of
Coverage to accurately reflect your new company and/or facility name.
Please find enclosed the revised Certificates of Coverage for the 17 facilities that changed
ownership from Concrete Supply Co to Concrete Supply Co., LLC. The terms and conditions
contained in the General Permit remain unchanged and in full effect. These revised Certificates
of Coverage are issued under the requirements of North Carolina General Statutes 143-215.1
and the Memorandum of Agreement between North Carolina and the U.S. Environmental
Protection Agency.
If you have any questions or need further information, please contact the Stormwater Permitting
Program at [phone].
Sincerely,
OR16INAL SIGNILl) 6�
KEN PICKI_P
for Tracy E. Davis, P.E., CPM, Director
Division of Energy, Mineral and Land Resources
cc: Mooresville RO, Z. Khan; Winston-Salem RO, M. Gantt (NCG140358)
Stormwater Permitting Program Files
Deborah Reese, DEMLR Budget Office — please update billing info
Central Files
Mecklenburg County DEP, Water Quality, 700 N. Tryon Street, Charlotte, NC 28202
Division of Energy, Mineral, and Land Resources
Energy Section • Geological Survey Section - Land Quality Section
1612 Mail Service Center, Raleigh, North Carolina 27699-1612 - 919-707-92001 FAX: [phone]
512 North Salisbury Street, Raleigh, North Carolina 27604 - Internet: http:llportal,ncdenr.Q g/webt
An Equal Opportunity 1 Affirmative Action Employer _ 50% Recycled 110% Post Consumer Paper

-; State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Kerr T. Stevens, Director
DAVID MOCK
CONCRETE SUPPLY CO-KANNAPOLIS
P.O. BOX 5247
CHARLOTTE, NC 28225
Dear Permittee:
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT ANo NATURAL RESOURCES
July 26, 1999
Subject: Reissue - NPDES Stormwater Permit -
Concrete Supply Co-Kannapolis
_ COC Number NCG 140044
Rowan County
In response to your renewal application for continued coverage under general permit NCG140000, the Division of
Water Quality (DWQ) is forwarding herewith the reissued stormwater general permit. This permit is reissued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between the state of North Carolina and the U.S. Environmental Protection Agency, dated December 6, 1983.
The following information is included with your permit package:
* A copy of general stormwater permit NCO140000
* A Stormwater Pollution Prevention Plan (SPPP) Certification Form. Completion of this form is required to
certify that you have developed and implemented the SPPP as per the conditions of the permit. This form
must be completed and returned to the Division within 30 days of receipt of this letter.
DO NOT SEND the SPPP with the signed form.
* Five copies of the Analytical Monitoring form and five copies of the Qualitative Monitoring form
* A copy of a Technical Bulletin for the general permit which outlines changes in the permit, key requirements,
and addresses frequently asked questions
* A Certificate of Coverage
Your coverage under this general permit is not transferable except after notice to DWQ. The Division may require
modification or revocation and reissuance of the Certificate of Coverage. This permit does not affect the legal
requirements to obtain other permits which may be required by DENR or relieve the permittee from responsibility
for compliance with any other applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or
decree.
If you have any questions regarding this permit package please contact Bill Mills of the Central Office Stormwater
and General Permits Unit at [phone], ext. 548
Sincerely,
for Kerr T. Stevens
cc: Central Files
Stormwater and General permits Unit Files
Mooresville Regional Office
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] Fax [phone]
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STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE No. NCG140044
STORMWATER AND PROCESS WASTEWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
CONCRETE SUPPLY CO-KANNAPOLIS
is hereby authorized to operate a process wastewater treatment system, and is hereby authorized to discharge process
wastewater and stormwater from a facility located at
CONCRETE SUPPLY CO-KANNAPOLIS
2505 LINDA AVE
KANNAPOLIS
ROWAN COUNTY
to receiving waters designated as Coldwater Creek in the Yadkin - Pee Dee River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, 1I, III,
IV, V, and VI of General Permit No. NCG140000 as attached.
This certificate of coverage shall become effective August 1, 1999,
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day July 26, 1999.
for Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

State (if North Carolina
De0artment of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. L. T. Hovis
Concrete Supply Company
P. O. Box 5247
Charlotte, NC 28225
Dear Mr. L. T. Hovis:
March 31, 1995
Subject: General Permit No. NCG 140000
Concrete Supply Company
COC NCG 140044
Rowan County
In accordance with your application for a stormwater discharge permit received on November 23, 1994, we
are forwarding herewith the subject certificate of coverage to discharge under the subject state - NPDES general
permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215 .1 and the
Memorandum of Agreement between North Carolina and the US Environmental Protection agency dated
December 6, 1983.
The stormwater permit your are receiving, NCG 140000, does not permit wasting concrete, dumping excess
concrete, directly into storm sewer outfalls or into waters of the state. Any facility which either dumps excess
concrete or washes excess concrete into storm sewers or waters of the state will be operating in direct violation to
both the terms of this permit and the North Carolina General Statutes. Such a discharge shall be considered an
illegal discharge and may subject the owner to enforcement actions in accordance with North Carolina General
Statutes 143-215.6A
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to
you, you have the right to request an individual permit by submitting an individual permit application. Unless
such demand is made, this certificate of coverage shall be final and binding.
Please take notice that this certificate of coverage is not transferable except after notice to the Division of
Environmental Management. The Division of Environmental Management may require modification or revocatior
and missuance of the certificate of coverage. r
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any question concerning this permit, please contact Mr. Bill Mills at telephone number 919/733-
5083, extension 548.
cc: Mooresville Regional Office
Mr. Roosevelt Childress, EPA
Sincerely,
original Signed BY
coieen H. Sullins
A. Preston Howard, Jr. P.E.
P.O. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
Telephone [phone] FAX [phone]
50% recycled/ 10% post -consumer paper

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140444
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGEELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
Concrete Supply Company
is hereby authorized to discharge stormwater and rinse waters from a facility located at
Kannapolis Plant
2505 Linda Ave.
Kannapolis
Rowan County
to receiving waters designated as Cold Water Creek in the Yadkin - Pee Dee River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts 1, II, II1
slid IV of General Permit No. NCG140000 as attached.
This Certificate of Coverage shall become effective March 31, 1995.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day March 31, 1995.
;1^jfiginal Signed BY
Coleen K Sullins
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

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STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES"�'��V�I�G
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCE
APR 15 2014
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE No. NCG140044 CEDW 1Qlq BOGES
STORMWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Concrete Supply Co., LLC
is hereby authorized to dischargeVstormwater from a facility located at
��ess �s���G✓ a►�!
Concrete Supply Co. — Kannapolis Plant
2505 Linda Ave
Kannapolis
Rowan County
to receiving waters designated as Coldwater Creek, a class WS-IV water in the Yadkin -Pee Dee
River Basin, in accordance with the effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, 11I, IV, V, and VI of General Permit No. NCG140000 as
attached.
This certificate of coverage shall become effective April 11, 2014.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day April 11, 2014
for Tracy E. Davis, P.E., Director
Division of Energy, Mineral, and Land Resources
By the Authority of the Environmental Management Commission
x6p
V„1i-f-

ATMA.
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
Mr. Johnie Alexander
Concrete Supply Co., LLC
P.O. Box 5247'
Charlotte, NC 28299
Dear Mr. Alexander:
John E. Skvarla, III
Secretary
April 11, 2014
Subject: NPDES General PennitNCG140000
Certificates of Coverage —See attached list
Concrete Supply Co., LLC
Formerly Concrete Supply Co.
Counties - Multiple
Division personnel received your request to revise your stormwater permit Certificates of
Coverage to accurately reflect your new company and/or facility name.
Please find enclosed the revised Certificates of Coverage for the 17 facilities that changed
ownership from Concrete Supply Co to Concrete Supply Co., LLC. The terms and conditions
contained in the General Permit remain unchanged and in full effect. These revised Certificates
of Coverage are issued under the requirements of North Carolina General Statutes 143-215.1
and the Memorandum of Agreement between North Carolina and the U.S. Environmental
Protection Agency.
If you have any questions or need further information, please contact the Stormwater Permitting
Program at [phone].
Sincerely,
OR16INAL 81GNED BZ
KEN PICKLE
for Tracy E. Davis, P.E., CPM, Director
Division of Energy, Mineral and Land Resources
cc: Mooresville RO, Z. Khan; Winston-Salem RO, M. Gantt (NCG140358)
Stormwater Permitting Program Files
Deborah Reese, DEMLR Budget Office -- please update billing info
Central Files
Mecklenburg County DEP, Water Quality, 700 N. Tryon Street, Charlotte, NC 28202
Division of Energy, Mineral, and Land Resources
Energy Section - Geological Survey Section • Land Quality Section
1612 Mail Service Center, Raleigh, North Carolina 27699-1612 - 919-707-92001 FAX: [phone]
512 North Salisbury Street, Raleigh, North Carolina 27604 - Internet: ht 1)://portal.ncdenr.org/web/Ir!
An Equal opportunity 1 Affirmative Action Employer — 50% Recycled 110% Post Consumer Paper