NCG140266_MONITORING INFO_20190204

i
STORMWATER DIVISION CODING SHEET
NCG PERMITS
PERMIT NO. v 0010 (p
DOC TYPE ❑HISTORICAL FILE
C� MONITORING REPORTS
DOC DATE ❑
YYYYMMDD

ANNUAL SUMMARY DISCHARGE MONITORING
REPORT (DMR) — WASTEWATER
SUBMIT TO CENTRAL OFFICE
General Permit No. NCG140000
Calendar Year 2018
'Report ALL WASTEWATER monitoring data on this form (include 'No FloWP'No Discharge" and Limit Violations) from
the previous calendar year to the DEQ by MARCH i of each year.
Certificate of Coverage No. NCG14 ®Q©© Facility Name: Thomas Concrete- Morrisville Plant RECEIVE
County: Wake FEB 0 4 2019
Phone Number: (919 ) 460-5317 Tots! noeoLjho�t�al�s motored_
Certified Laboratory ESC Lab # ENV375 DWR SECTION
Lab #
Wastewater (WW) Discharge Outfall No. 002
Does this outfall discharge WW to SA waters? Yes ❑ No ❑✓
Does this outfall discharge WW to SB or PNA waters? Yes ❑ No ❑✓
Does this outfall discharge WW to HQW or ORW waters? Yes ❑ No 0
If so, what is the 7Q10 flow rate? or Tidally influenced waters, 7Q10 not available ❑
Does this outfall discharge WW to Trout (Tr) designated waters? Yes ❑ No ❑✓
Were there any limit violations in the calendar year? Yes ✓❑ No ❑
Outfall No.
002
Daily Flow Rate,
cfs
pH,
SU
TSS,
mgll
SS,
mill
if applicable
Non -Polar O&G (EPA Method 1664
(SGT-HEM)), mgll
Effluent
Limitations
Daily Maximum
HQW or ORW
50% of 7Q10
Indicate NO FLOW if
eppficable
freshwater
6.0-9.0
saltwater
6.8-$ 5
V v
Standard
30
HOW
20
-
HOW ! ORW Tr, or
PNA
10
HQW, ORW, SA,
sB,PNA, orany
Trout
5
-
No Limit
Samples above Benchmark -
subject to Tiered Responses
15
Date
Sample
Collected,
m dl r
old
�p I
r gEL tv i
i'
'
T
t..
3/31/18
NO DISCHARGE 01
4124118
NO DISCHARGE Q2
9/30/18
NO DISCHARGE Q3
10/11/18
11.42
45.20
NIA
NIA
Permit Date 81112017 — 6/30/2022
Last Revised 6-22-2017

Certificate of Coverage No. NCG14 EOq©
Additional Outfall Attachment (make copies as needed for additional outfalls)
Wastewater (WW) Discharge Outfall No. 003
Does this outfall discharge WW to SA waters? Yes ❑ No 0
Does this outfall discharge WW to SIB or PNA waters? Yes ❑ No ❑�
Does this outfall discharge WW to HQW or ORW waters? Yes ❑ No ❑✓
If so, what is the 7Q1 D flow rate? or Tidally influenced waters, 7Q10 not available ❑
Does this outfall discharge WW to Trout (Tr) designated waters? Yes ❑ No El
Were there any limit violations in the calendar year? Yes ✓❑ No ❑
Outfall No.
0D3
Daily Flow Rate,
cfs
pH,
SU
•
TSS,
mgll
SS,
mlii
ff applicable
Non -Polar O&G (EPA Method 1664
(SGT-HEM)), mgil
Effluent
Limitations
Daily Maximum
o OW or ORW
50 % of 7Q10
Indicate NO FLOW if
applicable
freshwater
6.0-9.0
saltwater
V. V-13 $
V
Standard
30
HOW
20
HOW 1 ORW M Tr, or
PNA
10
HOW, ORW. SA,
SB, PNA, or any
Trout
5
No Limit
Samples above Benchmark
subject to Tiered Responses
1 5
Date
Collected,11
mo/ddi r
r r a - l x :ri
M i �`i'$ '4 i5 1✓ Y1
i .2 ��
_
�� r^` ✓ k
a �Jii
1tr 7+y,f
�L_i�:�
ti R'-'2
�S4i- f 1 � - �7�
�S.t 3•' F'Ft _�3'
1��,_�_.�.1"�'r:3�=
YSample ��A�
r
x,
i%e•'y '�+4�bf
}}
, ak`� �Pe.f wq �y` s 3,y "`_h
�4
i ? .vim-� •" ` .semis,
6130118
N0 DISCHARGE SEMI ANNUAL 1
10/11/18
12.09
66,20
NIA
NIA
Permit Date 811/2017 — 6/30/2022
Last Revised 8-22-2017

Certificate of Coverage No. NCG14 10-10®©
CERTIFICATION
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief, true, accurate, and complete. i am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
[Required by 40 CFR § 122.24
Signature NC-.
Date
Mail Annual Summary Wastewater DMR to the NCDEQ Central Office:
Note the address is correct — Central Files is housed in D WR (not DEMLR)
N.C. Department of Environmental Quality (DEQ)
Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Central Files Telephone [phone]
Questions? Contact DEMLR Stormwater Permitting Staff In the Central Office at:
[phone]
Permit Date 811 /2017 — 613012022
Last Revised 8-22-2017

ANNUAL SUMMARY DISCHARGE MONITORING
}
REPORT (DMR) — STORMWATER
SUBMIT TO CENTRAL OFFICE*
General Permit No. NCG140000
Calendar Year 2018
*Report ALL STORMWATER monitoring data on this form (include "No Flow"rNo Discharge" and Benchmark
Exceedances) from the previous calendar year to the DEQ by MARCH 1 of each year.
Certificate of Coverage No. NCG 140266 RECep v.,7.�- f
Facility Name: Thomas Concrete of Carolina — Morrisville Plant FEB 0
County: Wake zQi�
Phone Number: [phone] Total no. of SDOs monitr�ti_�L F1LFo
Certified Laboratory ESC Lab # ENV 375 t JECTIO�
Lab #
Stormwater Discharge Outfall (SDO) No. 001 VMA Outfall? Yes ❑ No N
Is this outfall currently in Tier 2 for any parameter? Yes ❑ No N
Was this outfall ever in Tier 2 during the past year? Yes ❑ No N
If this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency ❑
Yes, received approval from DEMLR to reduce monitoring frequency ❑
Other ❑
Outfall No.
Total Rainfall,
inches
Total
Suspended
Solids TSS ,
( )
m 1l
pH,
SU
Non -polar O&G
(EPA Method
1664 (SGT-HEM)),
mgll (VMA)
it appicable
New Motor Oil
Usage (gallmo.)
!/applicable
Stormwater
Benchmarks
Indicate NO FLOW it
applicable
circle Benchmark
100150
6.0`9.0
15
>55 g allmn. average requires TSS and
Nan-potaf= monitoring
Date Sample
Collected
molddl r
02/26/18
0.09
9.33
8.56
NIA
NIA
-10111/18
3.18
6.46
6.71
NIA
NIA
Permit Date 811/2017 -- 6/30/2022
Last Revised 8-22-2015

j
Certificate of Coverage No. NCG 140266
Additional Outfall Attachment (make copies as needed for additional outfalis) r
Stormwater Discharge Outfall (SDO) No. No. 002 VMA Outfall? Yes ® No ❑
Is this outfall currently in Tier 2 for any parameter? Yes ® No ❑
Was this outfall ever in Tier 2 during the past year? Yes ® No ❑
If this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency ❑
Yes, received approval from DEMLR to reduce monitoring frequency ❑
Other ❑
Outfall No.
Total Rainfall,
inches
Total
Suspended
Solids (TSS),
m /l
pH,
SU
Non -polar O&G
(EPA Method
1664 m(SG7-HEM)),
g/I (VMA)
Napplicable
New Motor Oil
Usage (gallmo.)
7fapWficable
S torm wa ter
Benchmarks
lndJcase NO FLOW it
applicable
Circla senchrnwh
100/50
6.0-9.0
15
?55 gallmo. average requires T55 and
Hon-polarO&G monitoring
Date Sample
Collected,
moldd! r
=.
f .
s
4 y
S,
01/30/18
NO FLOW
02/28/18
NO FLOW
03/31/18
NO FLOW
04/24/18
0.85
132
9.84
<1.16
>55
05/31/18
NO FLOW
06/30/18
NO FLOW
07/31/18
NO FLOW
08/31/18
NO FLOW
09/30/18
NO FLOW
10/11/18
3.18
45.2
11.42
0.00
>55
11/30/18
NO FLOW
12/14/18
0.15
328
12.16
0.00
>55
Permit Date 81112017 — 6/30/2022
Last Revised 8-22-2015

9
Certificate of Coverage No. NCG140266
Additional Outfall Attachment (make copies as needed for additional outfalls)
Stormwater Discharge Outfall (SDO) No. No. 003 VMA Outfall? Yes ❑ No
Is this outfall currently in Tier 2 for any parameter? Yes ® No ❑
Was this outfall ever in Tier 2 during the past year? Yes ® No ❑
if this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency ❑
Yes, received approval from DEMLR to reduce monitoring frequency ❑
Other . ❑
Outfall No.
Total Rainfall,
inches
Total
Suspended
p
Solids (TSS),
m 11
p H,
SU
Non -polar O&G
Method
1664 SGT-HEM)),
mgll (VMA) }},
New Motor Oil
Usage (gallmo.)
Stormwater
Benchmarks
IndicateNO ROW if
applicable
Circle Benchmark
100150
60-90
..
15
>55 g a!lmo. average requires T55 and
Non polar OSG monitoring
Date Sample
Collected,
molddl r
j.
-
01/31/18
NO FLOW
02/28/18
NO FLOW
03/24/18
0.91
159
7.96
NIA
NIA
04/24/18
0.85
137
9.55
NIA
NIA
05/31/18
NO FLOW
06/30/18
NO FLOW
07/31/18
NO FLOW
08/31/18
NO FLOW
09/30/18
NO FLOW
10/11/18
3.18
66.2
12.09
NIA
NIA
11/30/18
NO FLOW
12/14/18
0.15
282
12.09
NIA
NIA
Permit Date 8/112017 — 6/30/2022
Last Revised 8-22-2015

Certificate of Coverage No. NCG140266
CERTIFICATION
" I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
£Required by 40 CFR §122.221
Signature
Date \ -
Mail Annual Summary Stonmwater DMR to the NCDEQ Central Office:
(Vote the address is correct — Central Files is housed In DWR (not DEMLR)
N.C. Department of Environmental Quality (DEQ)
Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Central Files Telephone [phone]
Questions? Contact DEMLR Stormwater Permitting Staff in the Central Office at:
[phone]
Permit Date 811/2017 — 6130/2022
Last Revised 8-22-2015

ANNUAL SUMMARY DISCHARGE MONITORING
REPORT (DMR) — STORMWATER
SUBMIT TO CENTRAL OFFICE*
General Permit No. NCG140000
Calendar Year 2017
`Report ALL STORMWATER monitoring data on this form (include "No Flow"1"No Discharge" and Benchmark
Exceedances) from the previous calendar year to the DEQ by MARCH 1 of each year.
Certificate of Coverage No. NCG 140266 E�'t=
Facility Name: Thomas Concrete of Carolina — Morrisville Plant FEB 2 0 201B
County: Wake CENTRAL FILES
Phone Number: [phone] Total no. of SDOs monitored 3 DN1R SECTION
Certified Laboratory ESC Lab # ENV 375
Lab #
Stormwater Discharge Outfall (SDO) No. 001 VMA Outfall? Yes ® No ❑
Is this outfall currently in Tier 2 for any parameter? Yes'❑ No
Was this outfall ever in Tier 2 during the past year? Yes ❑ No
If this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency ❑
Yes, received approval from DEMLR to reduce monitoring frequency ❑
Other ❑
Outfall No.
Total Rainfall,
inches
Total
Suspended
Solids TSS),
(
mg/1
pH,
SU
Non -polar O&G
(EPA Method
1664 SGT-HEM
( )?�
mg/1 (VMA)
If applicable
New Motor Oil
Usage (gal/mo.)
NaRAlicable
Stormwater
Benchmarks
Indicate NO FLOW H
applicable
Circle Benchmark
100150
6.0-9.0
15
>55 g allmo. average requires Ts5 and
Non -polar o&Gmonitoring
Date Sample
Collected,
mo/ddl r
MMM
01 /20117
16.8
02/28/17
NO FLOW
03/31/17
1.26
0.8
6.09
04/30/17
NO FLOW
05/31/17
NO FLOW
06/30/17
NO FLOW
07/31/17
NO FLOW
08/31/17
NO FLOW
09/30/17
NO FLOW
10/31/17
NO FLOW
11/30/17
NO FLOW
12/31/17
NO FLOW
Permit Date 8/1/2017 — 6/30/2022
Last Revised 8-22-2015

Certificate of Coverage No. NCG140266
Additbnal Outfall Attachment (make copies as needed for additional outfalls)
Sto nawater Discharge Outfall (SDO) No. No. 002 VMA Outfall? Yes ® No ❑
Is this outfall currently in Tier 2 for any parameter? Yes ® No ❑
Was this outfall ever in Tier 2 during the past year? Yes ® No ❑
If this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency ❑
Yes, received approval from DEMLR to reduce monitoring frequency ❑
Other ❑
Outfall No.
Total Rainfall,
inches
Total
Suspended
Solids TSSy
( r�
m lI
pH,
SU
Non -polar O&G
(EPA Method
1664 SGT-HEM
( )}�
mgll {VMA}
Napplicable
New Motor Oil
Usage (gallmo.)
Happllcable
Stormwater
Benchmarks
Indicate NO FLO1Nil
applicable
Circle Benchmark
1 Of►150
V
6.0-9.0
15
>55 gallmo. average requires T55 and
Non polar O&G monitoring
Date Sample
Collected,
molddl r
MMM
01 /20/17
216.0
02/28/17
NO FLOW
03/31/17
NO FLOW
04/30/17
NO FLOW
05/31/17
NO FLOW
06/30/17
NO FLOW
07/31/17
NO FLOW
08/31/17
NO FLOW
09/30/17
NO FLOW
10/31/17
NO FLOW
11/30/17
NO FLOW
12/31/17
NO FLOW
Permit Date 8/112017 — 6/30/2022
Last Revised 8-22-2015

Certificate of Coverage No. NCG 140266
Additional Outfall Attachment (make copies as needed for additional outfalls)
Stormwater Discharge Outfall (SDO) No. No. 003 VMA Outfall? Yes ® No ❑
Is this outfall currently in Tier 2 for any parameter? Yes ® No ❑
Was this outfall ever in Tier 2 during the past year? Yes ® No ❑
If this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency ❑
Yes, received approval from DEMLR to reduce monitoring frequency ❑
Other ❑
Outfall No.
Total Rainfall,
inches
Total
Suspended
Solids (TSS),
mg/1
pH,
SU
Non -polar O&G
{EPA Method
1664 (SGT-HEM)),
mgll (VMA)
New Motor Oil
Usage {gallmo.)
Stormwater
Benchmarks
Indicate NO FLOWN
applicable
Circle Benchmark
104150
60-90
..
15
>55 gallmo. average requires T55 and
Non -polar O&G monitoring
Date Sample
Collected,mmm
molddl r
01 /20/17
279.0
02/28/17
NO FLOW
03/31/17
NO FLOW
04/30/17
NO FLOW
05/31/17
NO FLOW
06/30/17
NO FLOW
07/31/17
NO FLOW
08/31/17
NO FLOW
09/30/17
NO FLOW
10/31/17
NO FLOW
11/30/17
NO FLOW
12/31/17
NO FLOW
Permit Date 811/2017 — 6/30/2022
Last Revised 8-22-2015

Certificate of Coverage No. NCG140266
CERTIFICATION
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Requirprl by 40 r:FR 8199 997
Signs
Date
Mail Annual Summary Stormwater DMR to the NCDEQ Central Office:
Note the address is correct — Central Files is housed in DWR (not DEMLR)
N.C. Department of Environmental Quality (DEQ)
Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Central Files Telephone [phone]
Questions? Contact DEMLR Stormwater Permitting Staff in the Central Office at:
[phone]
Permit Date 8/1/2017 -- 6/30/2022
Last Revised 8-22-2015

STORMIMATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: April Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2017
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA
❑Trout ®Other,
Outfall No.
Date Sample I
Collected
{mo/dd/yr OR
NO FLOW)1
pH
(Standard
Units)
T55
{mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
100 ,
-
-
-
-
001
NO FLOW
Click here to
enter text.
Click here to
enter text.
NA
002
NO FLOW
y
28
003
NO FLOW
y
28
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfail
No.
Date Sample
Collected
(mo/dd/yr)1
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(Y/n)
# of Months
in Tier 2
z
Sampling
6-9
15
100 '
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES [:)NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one coin of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
4G�'i 4/30/2017
(Signature of Permittee) (Date)
Permit Date:7/1/2011-60/30/2015
Last Revised 7/13/11
Page 3 of 2

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Kevin Kelt
CERTIFIED LABORATORY: ESC Lab # ENV375
Lab #
LIMIT VIOLATIONS? Y>S ❑ NO
Part A: Wastewater Monitorine Requirements
SAMPLE COLLECTION YEAR: 2017
SAMPLE QUARTER: ❑Jul -Sept ❑Oct -Dec ®Jan -March ❑April -June
COUNTY: Wake
PHONE NO. [phone]
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: [:]SA ❑HQW ❑PNA ❑Trout ®Other
OPTIONAL INFO:
Qutfall No.
Date Sample
1
Collected
(mm/dd/yr)
Type of Wastewater
z
(VE, RM, MD}
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
SGT-HENf
(mg/L)
Duration
(minutes)
Total Flow
{gallons/day},
-
-
-
6-93.4
303.5
53
001
No discharge)
002
No discharge
003
No discharge
r
L r
TRAL F 1
6ECTION
1 If wastewater systems have not discharged in this quarter— report "No Flow" or "No Discharge' here. Please make sure to mark the sample quarter above.
z Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3 if an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11
Page 1 of 2

5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
7 Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW_") TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED. -
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
3/31/2017
Permit Date:7/1/2010-06/30/2015
Last Revised 07/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266 SAMPLE COLLECTION YEAR: 2017
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant SAMPLING PERIOD: ❑ July -December ® January -June
PERSON COLLECTING SAMPLES Kevin Kelt COUNTY Wake
CERTIFIED LABORATORY ESC Lab # ENV 375 PHONE NO. [phone]
Lab # ADD TO LISTSERVE? DYES ®NO EMAIL:
OPTIONAL INFO: March Monitoring Event DISCHARGING TO CLASS: []SA ❑HQW ❑PNA ❑Trout ®Other
Part A: Stormwater Monitoring Requirements
Outfall No.
Date Sample Collected
(mo/dd/yr OR
NO FLOW)1
PH
(Standard
Units)
TSS
(mg/L}
Event
Duration
(minutes)
Total
a
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
z
2 Sampling
-
-
6-9-
001
3/31/2017
6.09
0.8
60
1.25
n
NA
002
NO FLOW
y
27
003
NO FLOW
y
27
CNTRAL FILE
rvv L lOr
If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HOW, Trout, and PNA waters where they are 50 mg/I.
4 For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected i
(mo/dd/yr)
pH
(Standard
Units)
TPH using method
1664ASGT--HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly .
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling2
6-9
15
100 '
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one coov of this DMR (including all "No Flow" & "No Discharge" reoorts) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED,
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete
am aware that there are sisignificant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
1:5alkvuan3/31/2017
(Signature of Permittee) (Date)
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2

J
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: http://h2o.enr.state.nc.us/sufForms_Documents.htm#miscforms
Permit No.: NICI_I I I I 1 I I or Certificate of Coverage No.: NICIG/ 1l_41_01_29�
FacilitvName: Thomas Concrete of Carolina- Morrisville Plant
County: Wake Phone No. (7 0 4) 8 5 3 - 94 3 7
Inspector: Kevin Kelt
Date of inspection: 3 / 31 / 2 017
Time of Inspection: 1500
Total Event Precipitation (inches):
1.25"
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate/and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 01 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of 2
5 WU-242-112608

4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
Ol 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
�Jl 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
0 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes i�lo
9. is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe pH (field -measured) : 6.09
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242-112608

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: February Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2017
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? EYES ®NO EMAIL:
DISCHARGING TO CLASS: ESA ❑HCjW ❑PNA
❑Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)1
pH
(standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
100 '
-
-
001
NO FLOW
n
NA
002
NO FLOW
y
26
003
NO FLOW
y
26
r
IUN
' If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
s TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yrj1
pH
(Standard
Units}
TPH using method
1664A SGT HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
Rainfall a
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2 Monthly
Monitoring?
(y/n}
# of Months
in Tier 2
Z
Sampling
6-9
15
100 ,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES [:]NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one coov of this DMR fincludina all "No Flow" & "No Discharae" reports) within 30 days of receiot of sample for at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
Permit Date: 7/1/2011-60/30/2015
2/28/2017
(Date)
Last Revised 7/13/11
Page 3 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375_
OPTIONAL INFO: October Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2016
SAMPLING PERIOD: ® July -December ❑ January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW
❑PNA ❑Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)1
PH
(Standard
units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
100 '
-
-
-
001
NO FLOW
n
NA
002
NO FLOW
y
22
003
NO FLOW
REC-PRIED
y
22
(
ZAL FILES
DWR
SECTION
If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 if a value is in excess of the benchmark, or outside the benchmark range (for PH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part 8: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
P
Collected 1
(mo/dd/yr)
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
Rainfall°
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
z
Sampling
6-9
15
100 ,
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
c�Clsi')fii 2Gli 11/15/2016
(Signature of Permittee) (Date)
Permit Date:7/i/2011-60/30/2015
Last Revised 7/13/11
Page 3 of 2

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Kevin Kelt
CERTIFIED LABORATORY: ESC Lab # ENV375
Q4 Lab #
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2016
SAMPLE QUARTER: ❑Jul -Sept ®Oct -Dec Dian -march
COUNTY: Wake
PHONE NO. (_919 —)460-5317
ADD TO LISTSERVE? DYES ®NO EMAIL:
❑April -June
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other,
OPTIONAL INFO:
Outfall No.
Date Sample
Collected
(mm/dd/yr)
Type of Wastewater
Z
(VE, RM, MD)
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
SGT-HEM6
(mg/L)
Duration
(minutes)
Total Flow
(gallons/day)7
-
-
-
6-93,4
303s
53
(15)6
-
-
001
No discharge
002
No discharge
003
No discharger
L_L_+
k,-
CE=P
iTRAL FILE
S
//-j,
/ll PZ�j o7
R SEC 1u
4f
1 If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above.
z Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
Permit Date: 7/1/2010-06/30/2015
Last Revised 07/13/11
Page 1 of 2

s TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but'instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
7 Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE IOR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW" TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
12/31/2016
Permit Date:7/1/2010-06/30/2015
Last Revised 07/13/11
Page 2 of 2

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266 SAMPLE COLLECTION YEAR: 2016
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant SAMPLE QUARTER: ®Jul -Sept ❑Oct -Dec Dian -March ❑April -June
PERSON COLLECTING SAMPLES: Kevin Kelt COUNTY: Wake
CERTIFIED LABORATORY: ESC Lab # ENV375 PHONE NO. (_919 _) 460-5317
Q3 Lab # ADD TO LISTSERVE? []YES ®NO EMAIL:
LIMIT VIOLATIONS? YES ❑ NO DISCHARGING TO CLASS: [:]SA ❑HQW ❑PNA ❑Trout ®Other
OPTIONAL INFO:
Part A: Wastewater Monitoring Requirements
Outfall No.
Date Sample
Collected'
(mm/dd/yr)
Type of Wastewater
(VE, RM, MD)'
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
SGT-HEM'
(mg/L)
Duration
(minutes)
Total Flow
�
(gallons/day}
-
-
6-93.4
303.5
53
(15)6
-
001
No discharge
Opt
No discharge
;� 1
0D3
No discharge
tnr clrf'
nN
' If wastewater systems have not discharged in this quarter— report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above.
2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cieanout (MD). Report more than one type if the waste -stream is commingled.
3If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11
Page 1 of 2

5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
9/30/2016
Permit Date:7/1/2010-06/30/2015
Last Revised 07/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: August Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2016
SAMPLING PERIOD: ® July -December ❑ January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA
❑Trout ®Other,
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW}1
pH
(Standard
Units
TSS
(mg/L)
Event
Duration
(minutes}
Total
Rainfall 4
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2 Samplingz
-
-
6-9
100 '
-
-
-
001
NO FLOW
rnCr !�
n
NA
002
NO FLOW
y
20
003
NO FLOW
SIL
y
20
' If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to markthesample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yr)1
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Samplingz
6-9
15
loo '
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one coov of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete
am aware that there are s�nificant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
,5a4x,
(Signature of Permittee) 6
Permit Date; 7/1/2011-60/30/2015
9/12/2016
(Date)
Last Revised 7/13/11
Page 3 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: July Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2016
SAMPLING PERIOD: ® July -December ❑ January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES. ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA
❑Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)1
PH
(Standard
Units)
TSS
(mg/L}
Event
Duration
(minutes)
Total
a
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
100 ,
-
-
-
-
001
NO FLOW
n
NA
002
NO FLOW
y
19
003
NO FLOW
- -�
y
19
LUib
iT
i` C
©WR 3
=CTION
If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range,
3 TS5 benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected 1
(mo/dd/yr)
PH
(Standard
Units)
TPH using method
Ib64A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling2
6-9
152
100 ,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Orieinal and one coov of this DMR (includine all "No Flow" & "No Discharee" reports) within 30 days of receipt of sample for at end of monitorine ceriod
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUSTSIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
Permit Date:7/1/2011-60/30/2015
8/16/2016
(Date)
Last Revised 7/13/11
Page 3 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG14O266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375�
Lab #
OPTIONAL INFO: June Monitoring Event
Part A: Stormwater Monitoring Requirements
MONITORING FORM
pit
SAMPLE COLLECTION YEAR: 2016
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA []Trout ®Other
Outfall No.
Date Sample
Collected
{mo/dd/yr OR
NO FLOW)i
pH
(Standard
Units)
TSS
{mg/L)
Event
Duration
(minutes)
Total
4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
300 '
001
6/28/2016
7.24
3.79
120
1.25
n
NA•--
002
6/28/2016
11.33
24.2
120
1.25
y j18
003
6/28/2016
11.46
205
120
1.25
y
18
ED
I ' Il3F�
Ul-N
I HAL FILES
w
' If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
4 For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected 1
(mo/dd/yr)
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
n
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling2
6-9
is
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? R YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES [:]NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one coov of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receiot of sample for at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(SignaflVe of Permittee) V
PermTDate: 7/1/2011-60/30/2015
7/13/2016
(Date)
Last Revised 7/13/11
Page 2 of 2

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: http:Hh2o.enr.state.ne.us/su/Forms�Documents.htm#miscforms
Permit No.: N/C/ I_I_I_/_I_I / or Certificate of Coverage No.: NICIG/_ll_4l_01_21`_� �
Facility Name: Thomas Concrete of Carolina- Morrisville Plant
County: Wake Phone No. (919) 4 6 0 - 3 517
Inspector: Kevin Kelt
Date of Inspection: 6 / 2 8 / 2 016
Time of Inspection: 1530
Total Event Precipitation (inches):
1.25"
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
,JUL 19 2016
I. Outfall Description: CENTRAL FILES
DWR ECTION
Outfall No. 01 Structure (pipe, ditch, etc.) _ Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of 2
SWU-242-112608

J+
f -4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
O 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
01 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
lO 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution.
List and describe pH (field -measured): 7.24
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition maybe
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
S W U-242-1 12608

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: h :/lh2o.enr.state.nc.us/su/Forms Documents.htm#miseforms
Permit No.: N/CI I_I_hCvi
l I I I or Certificate of Coverage No.: N/C/G/ 1I 4l0l_21_9_ I
Facility Name: Thomas oncrete of Carolina- Morrislle Pla_nt
County: wake Phone No. (919) 4 6 0 - 3 517
Inspector: Kevin Kelt
Date of Inspection: 6/28/2016
Time of Inspection: 1520
Total Event Precipitation (inches);
1 . 2 5 "
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
law,
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 02 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: clear, light yellow tint
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of 2
11
5 WU-242-112608

4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
O 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
O2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
lO 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes N@
8. Is there an oil sheen in the stormwater discharge? Yes Q
9. Is there evidence of erosion or deposition at the outfall? 'e No
10. Other Obvious Indicators of Storm water Pollution:
List and describe pH (field measured) : 11.33
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 bf 2
5 WU-242- l 12608

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: bu://h2o.enr.state.nc.ustsu/Forms Documents. htm#miscforms
Permit No.: NICI_I_I_IJI or Certificate of Coverage No.: NICIGI_11_41_01�21_Cy
Facility Name: Thomas Concrete of Carolina- Morrisville Plant
County: Wake Phone No. (919) 4 6 0 - 3 517
Inspector: Kevin Kelt
Date of Inspection: 6 / 2 8 / 2 016
Time of Inspection: 1530
Total Event Precipitation (inches):
1.25"
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event' is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
RECEIVED
(Signature ofPermittee or Di ignee) JUL 19 20%
I. Outfall Description: CENTRAL FILES
)WR S-ECTiON
Outfall No. 01 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cemen.t,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of 2
SWU-242-112608

E
4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
OI 2 3 4 5
5. Floating Solids. Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
OI 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
(D 2 3 4 5
7. is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe pH (field -measured): 7.24
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242-112608

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375Y
Lab #
OPTIONAL INFO: May Monitoring Event
Part A: Stormwater Monitoring Requirements
RECEIVED
SAMPLE COLLECTION YEAR: 2016 JUN 14 Z 016-
SAMPLING PERIOD: ❑ July -December ® January-JutWENTRAL FILE
COUNTY Wake DWR SECTION
PHONE NO. [phone] ! f
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQWO PNA [—]Trot'"®Other_
Outfall No.
Date Sample
Collected
[mo/dd/yr OR
NO FLOW)1
PH
(Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
ifi of'Months in Tier
2
2 Sampling
-
-
6-9
100 '
-
-
-
-
001
No Discharge
n
NA
002
No Discharge
y
17
003
No Discharge
y
17
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HOW, Trout, and PNA waters where they are 50 mg/l.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected 1
(mo/dd/yr)
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rain#all
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling2
6-9
15
100 ,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitories period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of Fines and imprisonment for knowing violations."
"JCcd92i 2Qi 6/7/2016
(Signature of Permittee) (Date)
Permit Date:7/1/2011-60/30/2015
Last Revised 7/13/11
Page 3 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266 SAMPLE COLLECTION YEAR: 2015
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant SAMPLING PERIOD: ® July -December ❑ January -June
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: December Monitoring Event
Part A: Stormwater Monitoring Requirements
COUNTY W
PHONE NO. [phone]
ADD TO LISTSERVE? []YES. ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)'
pH
(Standard
Units)
TSS
(mg/L]
Event
Duration
(minutes)
Total
Rainfa114
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2 Sampling2
-
-
6-9
100 '
-
-
-
-
001
12/17/15
6.27
5.28
60
1.25
n
NA
002
12/17/15
10.31
111
60
1.25
y
12
003
12/17/15
8.61
75.3
60
1.25
y
12
RECEIVEP
CEt
ITRAL F.I'L S
UV
K .7Cv
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
° For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/l/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yrjl
pH
(Standard
Units]
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
Rainfall°
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/nj
ft of Months
in Tier 2
5amp{ing2
6-9
15
100 ,
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receir)t of sample (or at end of monitorine period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
Permit Date: 7/1/2011-60/30/2015
1/31/2016
(Date)
Last Revised 7/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG1.40266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant
PERSON COLLECTING SAMPLES
CERTIFIED LABORATORY
Kevin Kelt
ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: April Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2016
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: [—]SA ❑HQW
❑PNA ❑Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)1
pH
[Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total 4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
z
2 Sampling
-
-
6-9
100 '3
-
-
-
-
001
No Discharge
n
NA
002
No Discharge
RECEINI
y
16
003
No Discharge
y
16
MAY
CENTRAL
FILES
L)VVK SEC
I ION
CENTF
AL FILES
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfail here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
° For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected 1
(mo/dd/yr)
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
Rainfalla
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2 Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling,
6-9
15
r
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NON - l
REGIONAL OFFICE CONTACT NAME:
Mail Original and one coov of this OMR (including all "No Flow" & "No Discharge" reports) within 30 days of receiot of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
5/31/2016
(Date)
Permit Date: 7/1/2011-60/30/2015
Last Revised 7/13/11
Page 2 of 2

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Kevin Kelt
CERTIFIED LABORATORY: ESC Lab # ENV375_
Lab #
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2016
SAMPLE QUARTER: []Jul -Sept ❑Ott -Dec ®Jan -March ❑April -June
COUNTY: Wake
PHONE NO. (_919_)460-5317
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other
OPTIONAL INFO:
Outfall No.
Date Sample
1
Collected
(mm/dd/yr)
Type of Wastewater
2
(VE, RM, MD)
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
SGT-HEAe
(mg/L)
Duration
(minutes)
Total Flow
,
(gallons/day)
-
-
-
6-93,4
30a.s
53
(15)6
-
001
No discharge
002
No dischargeIVED
003
No discharge
DW
1 If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above.
2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
5 TSS limits are 20 mg/L for wastewater discharges to HQW waters,10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11
Page 1 of 2

s Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
7 Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW" "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"1 certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
,:5a4N,
(Signature of Permittee)
Permit Date:7/1/2010-06/30/2015
4/30/2016
(Date)
Last Revised 07/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375�
Lab #
OPTIONAL INFO: March Monitoring Event
Part A: Stormwater Monitoring Requirements
RECEIVED
SAMPLE COLLECTION YEAR: 2016 APR I I zU16
SAMPLING PERIOD: ❑ July -December ® Januarpfit TRAL FILES
COUNTY Wake DWR SECT10N
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other
Outfall Na.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)t
pH
(Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
Rainfall 4
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2 Samplingz
-
-
6-92
1002,3
-
-
-
-
001
No Discharge
n
NA
002
No Discharge
y
15
003
No Discharge
y
15
If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
Z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HOW, Trout, and PNA waters where they are 50 mg/l.
For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yr)l
pH
(Standard
Units )
TPH using method
1664A 5GT-HEM
m /L
{ g )
Total Suspended
Solids
m L
( g/)
Event
Duration
minutes
(minutes)
Total
a
Rainfall
n
(i)
New Motor Oil
Usage
al month
(g / )
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sam lin
P g2
6-9
15
1002,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDEN CES AT ANYONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one coov of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of samDle (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
am aware that there are significant naIties for submittiPg false information, including the possibility of fines and imprisonment for knowing violations."
4/4/2016
(Signature of Permittee) Ll (Date)
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant
PERSON COLLECTING SAMPLES Kevin Kelt
CERTIFIED LABORATORY ESC Lab # ENV 375�
Lab #
OPTIONAL INFO: February Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2016
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA
❑Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)I
pH
{Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total 4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
Z
2 Sampling
-
-
6-9
100 ,
-
-
-
-
001
No Discharge
n
NA
002
No Discharge
y
14
003
No Discharge
y
14
r
'GENEU
CENTRAL
FILES
ION
' If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HOW, Trout, and PNA waters where they are 50 mg/I.
"For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfail
No.
Date Sample
Collected
(mo/dd/yr)l
pH
(Standard
Units)
TPH using method
1664A SGT HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling2
6-9
15
100 •
-
-
-
-
5
•
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Qrieinal and one copv of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring, period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED.
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
Permit Date:7/1/2011-60/30/2015
3/31/2016
(Date)
Last Revised 7/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO, NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: January Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2016
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: [_]SA ❑HQW ❑PNA ❑Trout ®Other
Outf all Na.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)I
pH
(Standard
Units)
TS5
(mg/L)
Event
urat
Duration
(minutes)
Total 4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
Z
2 Sampling
-
-
6-9
1002'
-
-
-
-
001
1/15/16
7.98
2.60
60
.5
n
NA
002
1/15/16
11.53
106
60
.5
y
13
003
1/15/16
10.86
47.3
60
.5
y
13
ELV_I
ENTRAL FILE
otUTIUN
If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
4 For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected 1
(mo/dd/yr)
pH
(standard
Units)
TPH using method
I664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling2
6-9
15
100 ,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANYONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Orieinal and one coov of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted, Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
Permit Date:7/1/2011-60/30/2015
2/29/2016
(Date)
Last Revised 7/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Susan Bastian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: November Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2015
SAMPLING PERIOD: ® July -December ❑ January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? DYES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout
RECEIVED
JAN 0 4 2016
CENTRAL FILES
DWR SECTION
®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)1
pH
(Standard
Units)
TS5
(mg/L)
Event
Duration
(minutes)
Total
4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
n
(y/ )
# of Months in Tier
Z
2 Sampling
-
-
6-9
100 '
-
001
11/09/15
6.90
4.3
60
1.25
y
11
002
11/09/15
10.03
78.8
60
1.25
y
11
003
11/09/15
8.99
19.6
60
1.25
y
11
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit, Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l.
4 For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
IWOM-1
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B. Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
[mo/dd/yr)'
pH
(standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
in Tier 2
Monthly
Monitoring?
[y/n)
# of Months
in Tier 2
Sampling '
6-4
15
100 ,
-
-
-
-
-
r
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one coov of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
am aware that the�e are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
12/28/2015
(Signature of Permittee) (Date)
Permit Date: 7/l/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2
�_A

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: October Monitoring Event
Part A: Stormwater Monitorine Reauirements
SAMPLE COLLECTION YEAR: 2015
SAMPLING PERIOD: ® July -December ❑ January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW
RECEIVED
JAN 0 4 2016
CENTRAL FILES
©WR SECTION
❑PNA ❑Trout ®Other,
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)t
pH
(Standard
Units)
T55
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
100 '
-
-
-
-
001
10/28/15
7.41
13.6
60
0.46
y
10
002
10/28/15
10.52
32.9
60
0.46
y
10
003
10/28/15
9.24
107
60
0.46
y
10
If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
"For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
"Mo
=tg+C
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yr)1
pH
(Standard
Units)
TPH using method
I664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Samplingz
6-9
15
100 '
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copv of this DMR f includine all "No Flow' & "No Discharee" reports) within 30 days of receipt of sample (or at end of monitorine period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
am aware that there significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
12/28/2015
(Signature of Permittee) (Date)
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2

PROCESS WASTEWATER -- Quarterly Discharge Monitoring Report
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266 SAMPLE COLLECTION YEAR: 2015
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant SAMPLE QUARTER: ❑Jul -Sept ®Oct -Dec []Jan -March
PERSON COLLECTING SAMPLES: Susan Bastian COUNTY., Wake
CERTIFIED LABORATORY:_ESC Lab # ENV375_
Lab #
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitorins Requirements
PHONE NO. (_919 _) 460-5317
ADD TO LISTSERVE? DYES ®NO EMAIL.:
❑April -June
cp
00
�� DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other,
OPTIONAL INFO:
Outfall No.
Date Sample
Collected
(mm/dd/yrj
Type of Wastewater
z
(VE, RM, MDj
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
SGT-HEM'
(mg/Lj
Duration
(minutes)
Total Flow
(gallons/day)
-
-
-
6-93'4
303's
53
(15)6
-
-
001
No discharge
E! F,
002
No discharge
003
No discharge
JAN 0 4
MID
AIL
�jV�I
GE—,, i
1
.
1 If wastewater systems have not discharged in this quarter— report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above.
2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
S TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date:7/1/2010-06/30/2015
Last Revised 07/13/11
Page 1 of 2

6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE') WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
(Signature of Permittee)
Permit Date:7/1/2010-06/30/2015
12/28/2015
(Date)
Fast Revised 07/13/11
Page 2 of 2

I
_=: STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL iNFO: September Monitoring Event
Part A: Stormwater Monitoring Reauirements
SAMPLE COLLECTION YEAR: 2015
SAMPLING PERIOD: ® July -December
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW
❑ January -June
❑PNA [—]Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)'
pH
(Standard
Units)
TSS
(mg/L}
Event
Duration
(minutes)
Total 4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
z
2 Sampling
-
-
6-92
,002.3
-
-
-
-
001
9/25/15
10.4
3
45
0.875
y
9
002
9/25/15
9.3
21.4
45
0.875
y
9
003
9/25/15
9.3
20.1
45
0.875
y
9
NIOW 1 A nnm
r r yMlu
FILES
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge,
MOM
MMi
rl'-ft
r9pt
COD
Permit Date:7/1/2011-50/30/2015
Last Revised 7/13/11
Page 1 of 2

Part,+3: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month —averaged over a calendar year.
QutfaEl
No.
Date Sample
Collected
(mo/dd/yrJl
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
Rainfalla
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2 Monthly
Monitoring?
(Y/nJ
# of Months
in Tier 2
2
Sampling
6-9
152
100 '
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
am aware that theraare significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
10/30/2015
(Signature of PermitteeJ (Date)
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2of2

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Susan Bostian
CERTIFIED LABORATORY: ESC Lab # ENV375
Lab #
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2015
SAMPLE QUARTER: ®Jul -Sept []Oct -Dec ❑Jan -March
COUNTY: Wake
PHONE NO. (_919 _)460-5317
ADD TO LISTSERVE? OYES ®NO EMAIL:
■r"
ENO•
❑April-Jy
.me,
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA []Trout ®Other,
OPTIONAL INFO:
Outfall No.
Date Sample
1
Collected
(mm/dd/yr)
Type of Wastewater
z
(VE, RM, MD}
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
SGT-NE)
(mg/L
Duration
(minutes)
Total Flow
7
(gallons/day)
-
-
-
6-93'4
303.s
53
(15)6
-
-
001
No discharge
'* ,
002
No discharge
003
No discharge
►I
niS
CENTRAI.
FILES
1 If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above.
z Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3 If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
s TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11
Page 1 of 2

a Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
bt` instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. if the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violatinns_"
(Signature of Permittee)
Permit Date:7/1/2010-06/30/2015
10/30/2015
(Date)
Last Revised 07/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
FILE COPY
CERTIFICATE OF COVERAGE NO. NCG140266
GENERAL PERMIT NO. NCG140000
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: July Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2015
SAMPLING PERIOD: ® July -December ❑ January -June SEP 17 2015
COUNTY Wake CENTRAL FILETS
PHONE NO. [phone] DWR SECTION
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: []SA ❑HQW ❑PNA ❑Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)1
pH
[Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
100 ,
-
-
-
-
001
7/23/15
8.38
29.9
1.375"
y
7
002
No Discharge
y
7
003
7/23/15
9.33
196
1.375"
y
7
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l.
° For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

-Pet B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yr�l
pH
(Standard
Units}
TPH using method
1664A SGT--HEM
{mg/L}
Total Suspended
Solids
{mg/L}
Event
Duration
{minutes}
Total
a
Rainfall
{in}
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
{y/n}
# of Months
in Tier 2
z
Sampling
6-9
15
100 ,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑.NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Orieinal and one conv of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of samole for at end of monitoring period
in case of "No Flow"} to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete,
am aware that there significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
9/9/2015
(Signature of Permittee) (Date)
Permit Hate: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
RECEIVED
CERTIFICATE OF COVERAGE NO. NCG14O266 SAMPLE COLLECTION YEAR: 2015 SEP 17 2015
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant SAMPLING PERIOD: ® July -December ❑ January -June
PERSON COLLECTING SAMPLES Susan Bostian COUNTY Wake CENTRAL FILES
CERTIFIED LABORATORY ESC Lab # ENV 375_ PHONE NO. [phone] DWR SECTION
Lab # ADD TO LISTSERVE? []YES ®NO EMAIL:
OPTIONAL INFO: August Monitoring Event DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA [-]Trout ®Other
Part A: Stormwater Monitoring Requirements
Outfall No.
Date Sample Collected
(mo/dd/yr OR
NO FLOW)'
pH
[Standard
Units}
TSS
(mg/L)
Event
Duration
(minutes]
Total
a
Rainfall
in
(' }
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
z
2 Sampling
-
-
6-9
100 '
-
-
-
-
001
No Discharge
y
8
002
No Discharge
y
8
003
No Discharge
y
8
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l.
For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
*
Outfall
No.
Date Sample
Collected
(mo/dd/yr)1
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
SamplingZ
6-9
15
100 '
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES [:]NON
REGIONAL OFFICE CONTACT NAME:
Mail Orieinal and one coov of this DMR f includine all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete
am aware that thwe ar�gnificant en�; or submitting false information, including the possibility of fines and imprisonment for knowing violations."
9/9/201S
(Signature of Permittee) (Date)
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit:
Permit No.: NICI_l_I l 1_I_l / or Certificate of Coverage No.
Facility Name: Thomas Concrete of Carolina- Morr
County: Wake Phone No. (919) 4 6 0 - 3 517
Inspector: Kevin Kelt
Date of Inspection: 0 7 - 2 3 -15
Time of Inspection: 1145
Total Event Precipitation (inches):
1.375"
11 4/ Ol 2t`_� 7
_e Plant
Was this a Representative Storm Event? (See information below) 0 Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0,1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
C.
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 03 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of
S W U-242- l 12608

4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
l `.J 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
1 O 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
Ol 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes N�
8. Is there an oil sheen in the stormwater discharge? Yes
9. Is there evidence of erosion or deposition at the outfall? Yes Vol
10. Other Obvious Indicators of Stormwater Pollution:
List and describe pH ( field measured) : 8.38
some plant matter in water.
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242-1 12608

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: hip://h2o.enr_state.nc.us/su/Forms Documents. htm#m isc forms
Permit No.: NICI_I l�l hl I I or Certificate of Coverage No.: NIC/Gl_1/ 4I 0I_2I_6I_�
Facility Name: Thomas Concrete of Carolina- Morrisville Plant
County: Wake Phone No. (919) 4 6 0 - 3 517
Inspector: Kevin Kelt
Date of Inspection. 0 7 / 2 3 / 15
Time of Inspection: 1140
Total Event Precipitation (inches): 1. 375"
Was this a Representative Storm Event? (See information below) 0 Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, 1 certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or
1. Outfall Description:
Outfall No. 01 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: light yellow
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of 2
S WU-242-1 12608

4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
Ol 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
O 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
lO 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes 1Va
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe pH (field -measured) : 9.33
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242-112608

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266 SAMPLE COLLECTION YEAR: 2015
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant SAMPLING PERIOD: ❑ July -December ® January -June
PERSON COLLECTING SAMPLES Susan Bostian COUNTY Wake
CERTIFIED LABORATORY ESC Lab # ENV 375 PHONE NO. [phone]
Lab # ADD TO LISTSERVE? []YES ®NO EMAIL:
OPTIONAL INFO: May Monitoring Event DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other,
Part A: Stormwater Monitoring Requirements
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FL0W)1
PH
(Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
Rainfall a
(in)
In Tier 2
Monthly
Monitoring?
(vin )
# of Months in Tier
2 Sampling2
6-91
1001.3
-
-
-
-
001
No Discharge
y
5
002
No Discharge
y
5
003
No Discharge
y
5
lI ]�
INFp
R SEA
' If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
z if a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l.
"For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yr)'
pH
(Standard
Units)
TPH using method
16S4ASGT--HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
Rainfall a
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling'
6-9'
15'
1001,3
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitorine Deriod
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete
am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
C,
(Signature of Permittee)
6/8/2015
(Date)
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Susan Bostian
CERTIFIED LABORATORY: ESC
Lab # ENV375
Lab #
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitoring Requirements
SAMPLE COLLECTION YEAR: 201S
SAMPLE QUARTER: ❑Jul -Sept ❑Oct -Dec ®Jan -March ❑April -June
COUNTY: Wake
PHONE NO. (_919 _) 460-5317
ADD TO LISTSERVE? DYES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA ❑Trout ®Other,
OPTIONAL INFO:
Outfall No.
Date Sample
x
Collected
(mm/dd/yr)
Type of Wastewater
z
{VE, RM, MD)
pH
{standard]
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
6
SGT HEM
{mg/L)
Duration
(minutes)
Total Flow
,
{gallons/day]
-
-
-
6-93.4
303,5
53
(15)6
-
-
001
No discharge
002
No discharge
003
No discharge
1 If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above.
z Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3 if an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date: 7/1/2010-06/30/2015
Last Revised 07/13/11
Page 1 of 2

6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain d`,-mer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
3/31/2015
(Signature of Permittee) (Date)
Permit Date: 7/1/2010-06/30/2015
Last Revised 07/13/11
Page 2 of 2

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT NO. NCG140000 RECEIVED
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Susan Bostian
CERTIFIED LABORATORY: ESC Lab ## ENV375_
Lab #t
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitoring Requirements
AUG 0 7 ?0i5
SAMPLE COLLECTION YEAR: 2015 CENTRAL FILES
SAMPLE QUARTER: ❑Jul -Sept ❑Oct -Dec ❑Jan -Marc% FtNTR-94%e
COUNTY: Wake
PHONE NO. (_919 _) 460-5317
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: []SA ❑HQW ❑PNA []Trout ®Other,
OPTIONAL INFO:
Outfall No.
Date Sample
Collected 1
(mm/dd/yr)
Type of Wastewater
(VE, RM, MD)Z
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
5GT-HEM6
(mg/L)
Duration
(minutes)
Total Flow
(gallons/day)'
6-93,4
303,5
53
(15)6
-
001
No discharge
002
No discharge
003
No discharge
1 If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above.
2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
31f an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11
Page 1 of 2

6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VIVA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
7 Flow rate can'be measured continuously or calculated. flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 028 .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWCL and the DWQ Regional Office may require an annual flow
report on a case-6y-case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW". "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
SAT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO: _
rDivision of Water Quality
` '%, ttn: DWQ Central Files
M1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST 51GN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel property gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations_"
(Signature of Permittee)
Permit Date:7/1/2010-06/30/2015
7/31/2015
(Date)
Last Revised 07/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFACC (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: June Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2015
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? DYES ®NO EMAIL:
DISCHARGING TO CLASS: []SA ❑HQW ❑PNA
RECEIVED
JUN 17 2015
CENTRAL. FILES
DWR SECTION
❑Trout ®Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)'
PH
(Standard
Units]
TSS
(mg/L)
Event
Duration
(minutes)
Total
Rainfall'
{in]
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2 Sampling'
-
-
6-9z
1002"
-
-
_
-
001
6/2/2015
7.05
7.2
30
0.15
y
6
002
6/2/2015
8.75
42.8
30
0.15
y
6
003
6/2/2015
8.95
61.6
30
0.15
y
6
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
Z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
a TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
° For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2
M"
�t
C�3

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yr)l
pH
(Standard
Units)
TPH using method
166�4A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
Rainfall a
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
Sampling'
6-9
15'
1002,3
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Orieinal and one copv of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow') to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete
am awareJ�at there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing violations."
C,
(Signature of Permittee)
Permit Date:7/1/2011-60/30/2015
6/10/2015
(Date)
Last Revised 7/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: . Thomas Concrete of Carolina -Morrisville Plant
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: January Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2015
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? OYES ®NO EMAIL:
DISCHARGING TO CLASS: [_]SA ❑HQW ❑PNA
❑Trout ®Other
Outfall No.
Date Sample
Collected
( mo/dd/yr OR
NO FLOW)1
PH
(Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
A
Rainfall
(in)
in Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
100 '
-
-
-
-
001
No Discharge
y
2
002
No Discharge
y
2
003
No Discharge
y
2
;ENTRAL FILES
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or Outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l.
4 For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
C.2
MNC
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
•
Outfall
No.
Date Sample
Collected
(mo/dd/yr)
pH
(Standard
units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
i# of Months
in Tier 2
Sampling2
6-9
15
100 ,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR(including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there are gnifica�t- enalties for u> mitting false information, including the possibility of fines and imprisonment for knowing violations.
(Signature of Permittee)
3/31/2015
(Date)
Permit Date:7/1/2011-60/30/2015
Last Revised 7/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE N0. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: February Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2015
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: []SA ❑HQW ❑PNA
❑Trout ®Other,
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)'
pH
[Standard
Units}
TSS
(mg/L)
Event
Duration
(minutes}
Total
4
Rainfall
(in}
In Tier 2
Monthly
�
Monitoring.
(y/n)
# of Months in Tier
2
2 Sampling
-
-
6-9
100 ,
-
-
-
-
001
No Discharge
y
3
002
No Discharge
y
3
003
No Discharge
y
3
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HOW, Trout, and PNA waters where they are 50 mg/I.
For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
•
Outfall
No.
Date Sample
Collected
(mo/dd/yrjl
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
{mg/I.)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
Rainfalla
(in)
New Motor Oil
Usage
(gal/month)
Monthly
Monitoring?
[Y/n)
q of Months
in Tier 2
2
Sampling
6-9
15
100 ,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR (including_ all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that the&e are sign ficant p, hies for submittinpnfalse information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
3/31/2015
(Date)
Permit Date:7/1/2011-60/30/2015
Last Revised 7/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO: March Monitoring Event
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2015
SAMPLING PERIOD: ❑ July -December ® January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? []YES ®NO EMAIL:
DISCHARGING TO CLASS: ❑SA ❑HQW ❑PNA
❑Trout ®Other,
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)'
pH
(Standard
Units)
TSS
(mg/L)
Event
on
Duration
ti
(minutes]
Total
4
ana
i R llf
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
z
2 Sampling
-
-
6-9
100 '
-
-
-
-
001
03/05/15
6.95
16
45
0.5
y
4
002
03/05/15
11.20
110
45
0.5
y
4
003
03/05/15
8.40
130
45
0.5
y
4
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l.
4 For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
•
outfall
No.
Date Sample
Collected
(ma/dd/yr}'
pH
(Standard
Units)
TPH using method
T
1664A SGNEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
{y/n'
# of Months
in Tier 2
Z
Sampling
6-9
15
100 ,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES []NON
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copv of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample (or at end of monitoring period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
am aware that the si nificant alties for submit 'ng false information, including the possibility of fines and imprisonment for knowing violations.
3/31/2015
(Signature of Permittee) (Date)
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: http://l12o.enr.state.nc.us/su/Forms_ Documents.htm#miscforms
Permit No.: NICI I hl I l�l�l or Certificate of Coverage No.: N/C/G/-1/-4/_0/-4__i
Facility Name: Thomas Concrete of Carolina— Morrisville Plant
County: Wake Phone No. (919) 4 60— 3517
Inspector: Susan Bostian
Date of Inspection: 0 3 / 0 5 / 15
Time of Inspection: 1545
Total Event Precipitation (inches):
0.5
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfali Description:
OutfalI No. 01 Structure (pipe. ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfali drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light. medium, dark) as descriptors: clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of 2
S W U-242-112608

4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
0 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of Floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
OI 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge; where I is no solids and 5 is extremely muddy:
O 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes �o
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe PH (field -measured): 6.95
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition maybe
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
0 W U-Z42-1 12608

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: hitp://h2o.enr.state.nc.us/su/Fornis Documents.htm#miscforms
Permit No.: NICI—I_I_I_l_I_I_I or Certificate of Coverage No.: NICIGI 11_41_01���_ 1
Facilitv Name: Thomas Concrete of Carolina— Morrisville Plant_
County: Wake Phone No. (919) 460--3517
Inspector: Susan Bostian
Date of Inspection: 0 3 / 0 5 / 15
Time of Inspection: 1545
Total Event Precipitation (inches):
0.5
Was this a Representative Storm Event? (See information below) 0 Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report
is accurate and complete to the best of my knowledge:
(Signature of Perinittee or Designee)
I. Outfall Desci-iption:
Outfall No. 02 Structure (pipe, ditch, etc.) _ Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: slight tan tint
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of 2
S W U-242-112608

4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
1 2O 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where i is no solids and 5 is the surface covered with floating solids:
lO 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy:
1 02 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe PH (field -measured): 11.20
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242-112608

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: htt ://h2o.enr.slate.nc.us/su/Forms Doc uments.htm#miscforms
Permit No.: N/C/_I_I_I_I_I /_I or Certificate of Coverage No.: NICIGI_ll_4l0/_ 2 6 7
Fac i I ity N ame: Thomas Concrete of Carolina— Morrisville Pla_nt
County: • Wake Phone No. [phone]
Inspector: Susan Bostian
Date of Inspection: 0 3 — 0 5 —15
Time of Inspection: 1545
Total Event Precipitation (inches):
0.5
Was this a Representative Storm Event? (See information below) 0 Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single stone event may contain up to 10 consecutive hours of no precipitation.
By this signature, 1 certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 03 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: Liqht Brown
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Pagel of 2
S WU-242-1 126os

4. Clarity: Choose the number which best describes the clarity of the discharge; where I is clear
and 5 is very cloudy:
1 0
3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
1O 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy:
1 2O 3 4 5
7. Is there any foam in the stormwater discharge? Yes N�
8. Is there an oil sheen in the stormwater discharge? Yes
9. Is there evidence of erosion or deposition at the outfall? 'e No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe pH (field measured) : 8.40
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242-1 12608

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE N0. NCG14O266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Susan Bostian
CERTIFIED LABORATORY:_ESC Lab i# ENV375
Lab ##
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2014
SAMPLE QUARTER: ❑Jul -Sept ®Oct -Dec ❑Jan -March
COUNTY: Wake
PHONE NO. (_919 _)460-5317
ADD TO LISTSERVE7 OYES ®NO EMAIL:
❑April -June
DISCHARGING TO CLASS: ®SA ❑HQW ❑PNA ❑Trout ❑Other
OPTIONAL INFO:
Outfail No.
Date Sample
1
Collected
(mm/dd/yr)
Type of Wastewater
(VE, RM, MD)'
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
SGT-HEM"
(mg/L)
Duration
(minutes)
Total Flow
�
(gallons/day)
'
-
6-93,4
303.s
53
(15)6
-
-
001
No discharge
RECEIVED
002
No discharge
003
No discharge
JAN 0 ,
M
1 If wastewater systems have not discharged in this quarter— report "No Flow" or "No Discharge' here. Please make sure to mark the sample quarter above.
a Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3 if an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwaters.
5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date: 7/1/2010-06/30/2015
Last Revised 07/13/11
Page 1 of 2
W

6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
7 Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY INCLUDING ALL "NO FLOW" "NO DISCHARGE" WITHIN 30 DAYS OF RECEIPT OF SAMPLE OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
r-buz ..,Division of Water Quality
at:.' _"Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
(Signature of Permittee)
Permit Date: 7/1/2010-06/30/2015
12/29/2014
( Date)
Last Revised 07/13/11
Page 2 of 2

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant_
PERSON COLLECTING SAMPLES Susan Bostian
CERTIFIED LABORATORY ESC Lab # ENV 375_
Lab #
OPTIONAL INFO:
Part A: Stormwater Monitoring Requirements
SAMPLE COLLECTION YEAR: 2014
SAMPLING PERIOD: ® July -December ❑ January -June
COUNTY Wake
PHONE NO. [phone]
ADD TO LISTSERVE? ❑YES ®NO EMAIL:
DISCHARGING TO CLASS: ®SA ❑HQW ❑PNA []Trout
I�
❑Other
Outfall No.
Date Sample
Collected
{mo /dd/yr OR
NO FLOW)'
PH
{Standard
Units}
TSS
[mg/L}
Event
Duration
(minutes)
Total
4
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
z
2 Sampling
-
-
6-9
100 .3
-
-
-
-
001
12/15/14
7.06
1.4
60
0.6
y
1
002
12/15/14
9.97
85
60
0.6
y
1
003
12/15/14
9.43
230
60
0.6
y
1
n
1 If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
"For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
.fCF V ED
09 2015
FRAL FILES
i SECTION
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
r s
No.
Date Sample
Collected
(mo/dd/yr)1
pH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months
in Tier 2
2
Sampling
6-9
15
1002,
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one conv of this DMR (including all "No Flow" & "No Discharge" reports) within 30 days of receipt of sample for at end of monitorinp- period
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUSTSIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and ail attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete.
am aware that the are significant
(Signature of Permittee)
Permit Date:7/1/2011-60/30/2015
for submitting false information, including the possibility of fines and imprisonment for knowing violations."
� A 12/29/2014
(Date)
Last Revised 7/13/11
Page 2 of 2

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: httu://h2o.enr.state.nc.us/su/Forms Documents. htm#mi_scforms
Permit No.: NICI_I l I I I I I or Certificate of Coverage No.: NICIGI_11_41_ 01 2l 9_�
Facility Name: Tf om—as Concrete of Carolina- Morrisville Plant
County: Wake Phone No. (919) 4 6 0 - 3 517
Inspector: Susan Bostian
Date of Inspection: 12 -15 -14
Time of Inspection: 1343
Total Event Precipitation (inches):
0.6
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
C. Goa
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 03 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: _ Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: Light Brown
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page 1 of 2
S WU-242-112608

4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
2O 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
0 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy:
1 2O 3 4 5
7. Is there any foam in the stormwater discharge? Yes N�
8. Is there an oil sheen in the stormwater discharge? Yes
9. Is there evidence of erosion or deposition at the outfall? 'e No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe pH (field measured) : 9.43
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition may be
indicative of pollutant exposure. These conditions warrant further investigation.
T
Page 2 of 2
i
SWU-242-1 12609

CERTIFICATE OF COVERAGE NO. NCG200342
FACILITY NAME C&C Scrap Iron & Metal_
PERSON COLLECTING SAMPLES Shan Conner
CERTIFIED LABORATORY TestAmerica
COUNTY Clevela
PHONE NO. (_704_)_739-8053
Part A: Specific Monitoring Requirements
STORMWATER DISCHARGE OUTFALL (SDO)
GENERAL PERMIT NO. NC6200000
DISCHARGE MONITORING REPORT(DMR)
Lab # _ 387
Lab #
Mail original and one copy to:
Division of Water Quality
Attn: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
SAMPLES COLLECTED DURING
CALENDAR YEAR: 2014
(This monitoring report is ducat the Division
later than 30 days from the date the facility
receives the sampling results from the laboratorpr)Olw
Outfall
No.
Date
Sample
Collected
mo/dd/ yr
Total
Rainfall
inches
00530
00340
00556
00400
01113
01119
00980
01114
01094
Total Suspended
Solids
m /I
Chemical Oxygen
Demand
m /I
Oil & Grease
m /I
pH
Sm.
Cadmium'
mg/1
Copper'
m /I
Iron'
m /I
Lead2
m g/I
Zinc'
m /I
Benchmark'
-
-
100
120
30
6.0 -- 9.0
0.001
0.007
N/A
0.03
0.067
001
11/17/14
0.63
4180
1350
21.0
8.21
0.034
6.78
150
3.13
8.40
002
11/17/14
0.63
4610
970
11.7
8.42
0.042
8.24
126
3.22
10.0
' If a value is in excess of the benchmark, or outside the benchmark range (for phi), you must implement the Tier l or Tier 2 responses in the General Permit.
2 Total recoverable.
Oidj, complete Part B if Nris frrcilitp uses more Ntarr 55 gallmis of crew motor oil per moiah.
Part B: Vehicle Maintenance Activity Monitorinp_ Requirements
Outfall
No.
Date
Sample
Collected
mo/dd/ r
Total
Rainfall
inches
New Motor Oil
Usage
al/month
00530
00400
00556
Total Suspended
Solids
m /I
pH
s.u.
Oil & Crease
m /I
Benchmark]
-
-
-
100
6.0 — 9.0
30
RECEIVED
JAN 0 S Y'
CENTRAL FILES
DWR SECTION
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify. under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the systeni, or those persons directly responsible 11or gathering the
information, the information submitted is, to the best of my knowledge and belief. true, accurate, and complete. lam aware that there arc significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations."
(Signature f Permittee) (Date) -
NCG200000 DMR Form SWU-256
Page 1 of I

STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000 IRECEIVED
CERTIFICATE OF COVERAGE NO. NCGI4 0 4 ` 5
FACILITY NAME: _446tic ?AC& cac&I?F LL+[+
PERSON COLLECTING SAMPLES P.
CERTIFIED LABORATORY Lab if Jkl
Lab #
OPTIONAL INFO:
Part A: Stormwater Monitorine Reauirements
SAMPLE COLLECTION YEAR:
SAMPLING PERIOD: July -December ❑ January -June CEN
COUNTY A DW
PHONE NO. ( W7
ADD TO L15T5ERVE? ❑YES KNO EMAIL:
DISCHARGING TO CLASS: []SA ❑HQW ❑PNA []Trout ❑Other
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FLOW)t
pH
(Standard
Units)
T55
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Tier
2 Sampling2
-
-
6-9z
1002,3
-
_
-
1
20
.63
i
{
' If "NO FLOW" or "NO DISCHARGE, Fnter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above.
2 If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark,values are 100 mg/I, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/l.
4 For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
N2020a
TRAL FILES
R SECTION
I
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month -- averaged over•a calendar year.
Outfall
No.
Date Sample
Collected
{mo/dd/yr}1
pH
{standard
Units}
TPH using method
1664A SGT-HEM
{mg/L}
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
{y/n)
# of Months
in Tier 2
2
Sampling
6-92
Ise
1002,3
-
-
-
i
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES []NOR
HAVE YOU CONTACTED THE REGION? YES ❑ NO ❑
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copv of this DMR (includins all "No Flow" & "No Discharge" reoortsl within 30 days of receiot of samole for at end of monitorine ueriod
in case of "No Flaw") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those per s directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete
am awa th t there are 4niflicant penalties for suhmitting false information, including the possibility of fines and imprisonment for knowing violations."
(Sig Lure f Permittee) (Date)
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 2 of 2

RECEIVED
ED
NOV 0 7 2014
CENTRAL, FILES
DWR SECTION
PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT No. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Susan aostlan
CERTIFIED LARORATORY:_ESC Lab # ENV375
Lab #
LIMIT VIOLATIONS? YES []NO
Part A; Wastewater Monitoring Requirements
SAMPLE COLLECTION YEAR: _2014
SAMPLE QUARTER: ®Jul -Sept ❑Oct -Dec QJan-March
COUNTY:- Wake
PHONE NO. L919�J 460-5317
ADD TO LISTSERVE? AYES ®NO EMAIL:
DISCHARGING TO CLASS: ®SA ❑HQW [jPNA []Trout []Other
OPTIONAL INFO:
QApril-June
Outfall No,
Date Sample
Collected`
(mm/dd/yr)
Type of Wastewater
IVE, RM, MD)
PH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mt/L)
TPH using
method 1664A
SGT-HEM'
(mg/L
Discharge
Duration
(minutes)
Total Flow 7
(gallons/day)
6-9"'
3W-'
5'
115),
001
No discharge
002
No discharge
003
No discharge
' If wastewater systems have not discharged in this quarter— report "No Flow" or "No Discharge" here. Please make sure to mark the sample quarter above.
Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
'if an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
`pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saitwaters.
s TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11
Page 1 of 2

e Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VIVA areas. TPH does not have a limit for wastewater,
but instead Is subject to benchmarks and provisions of Part IV, Section A, Including the Tiered Response Action.
' Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall beset to 50%of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE"LWITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
AT END OF MONITORING PERIOD IN CASE OE "NO FLOW") TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
Y0U MUST S1GN TN1S CERTiFICATION_FORANY fNFORMA7iON REPORTED;
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the Information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the Information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am away at there are signl nt penaltiebmitting false information, including the possibility of fines and Imprisonment for knowing
tion."^J
E
r
11/4/2014
(Signature of Permittee)
(Date)
Permit Date: 7/1/2010-06/30/2015 Last Revised 07/13/11
Page 2 of 2

T
RECEIVED
014
Stormwater Discharge Outfall (SDO) CENTRAL FILES
Qualitative Monitoring Report DWQIBOG
For guidance on filling out this form, please visit: http://h2o.enr.state.nc.ustsu/Forms Documents.htm#miscforms
Permit No.: N/C/_I 1 1 I I l_I or Certificate vcate of Coverage No.:' N/C/G/ 1l 4I_ 0I
Facility Name: Thomas Concrete of Carolina— Morrisille Plant
County: Wa ke Phone No. (919) 4 6 0 — 3 517
Inspector: Susan Sostian
Date of Inspection: 0 4 / 3 0 / 14
Time of Inspection: 1435
Total Event Precipitation (inches): 1.12
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0. i inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
i. Outfall Description:
Outfall No. 01 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,ag2regates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: light yellow orange/light tint
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
SWU-242-112608
Pagel of 2

i
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is clear
and 5 is very cloudy:
1 2 O 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
O 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where I is no solids and 5 is extremely muddy:
I O 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes i�lo
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious indicators of Stormwater Pollution:
List and describe pH (field -measured) : 7.05
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition maybe
indicative of pollutant exposure. These conditions warrant further investigation.
SWU-242-112608
Page 2 of 2

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: http://h2o.enr.state.nc.us/su/Forms Documents.htm#miscforms
Permit No.: NICI_I I_I l_I l_I or Certificate of Coverage No.: N/C/G/ 1/_`l/_ 0/�_ 7_ 3
Facility Name: Thomas Concrete of Carolina— Morrisville Plan_t
County: Wa ke Phone No. (9 19) 4 6 0 — 3 517
Inspector: Susan Bostian
Date of Inspection: 0 4 / 3 0 / 14
Time of Inspection: 1440
Total Event Precipitation (inches): 1.12
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (req ui rements; vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfall and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain up to 10 consecutive hours of no precipitation.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
I. Outfall Description:
Outfall No, 02 Structure (pipe, ditch, etc.) Pipe
Receiving Stream: Unnamed tributary to Crabtree -Creek
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,aggregates, chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: very clear
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): No distinctive odor
Page I of 2
SWU-242-112668

4. Clarity: Choose the number which best describes the clarity of the discharge, where t is clear
and 5 is very cloudy:
O 2 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where I is no solids and 5 is the surface covered with floating solids:
O2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
O 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe PH (field -measured): 11.63
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosionldeposition maybe
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242-112608

Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
For guidance on filling out this form, please visit: http://h2o.enr.state.nc.us/su/Forms Documents. htm#miscforms
Permit No.: N/C/ / l_I / l_l_I or Certificate of Coverage No.: N/C/G/ 1/_4/�'_ 2 §� I
Facility Name: Thomas Concrete of Carolina- Morrisville Pla_nt
County: Wa ke Phone No. (919) 4 6 0 - 3 517
Inspector: Susan Bostian
Date of Inspection: 0 4 - 3 0 -14
Time of inspection: 1450
Total Event Precipitation (inches):
1.12
Was this a Representative Storm Event? (See information below) ® Yes ❑ No
Please check your permit to verify if Qualitative Monitoring must be performed during a representative
storm event (requirements vary).
A "Representative Storm Event" is a storm event that measures greater than 0.1 inches of rainfal l and that
is preceded by at least 72 hours (3 days) in which no storm event measuring greater than 0.1 inches has
occurred. A single storm event may contain"up to 10 consecutive hours of no precipitation.
By this signature, 1 certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 03 Structure (pipe, ditch, etc.) Pipe_
Receiving Stream: Unnamed tributary to Crabtree Creek _^
Describe the industrial activities that occur within the outfall drainage area: Bulk Storage of
raw materials (cement,_aggregates,_ chemical admixtures) and petroleum
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors: Light Brown
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.). No distinctive odor
Page I of 2
SWU-242-112608

4. Clarity: Choose the number which best describes the clarity of the discharge, where I is clear
and 5 is very cloudy:
1 O 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
O2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
0 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes 9
8. Is there an oil sheen in the stormwater discharge? Yes
9. Is there evidence of erosion or deposition at the outfall? Yes 9
10. Other Obvious Indicators of Stormwater Pollution:
List and describe pH ( field measured) : 6.90
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition maybe
indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of
SWU-242-112608

i
STORMWATER DISCHARGE OUTFALL (SDO) - Semi -Annual MONITORING FORM
GENERAL PERMIT NO. NCG140000 RECEIVED
CERTIFICATE OF COVERAGE NO. NCG140266 SAMPLE COLLECTION YEAR: 2014
JUL 07 '1014
FACILITY NAME: Thomas Concrete of Carolina -Morrisville Plant SAMPLING PERIOD: ❑ July -December ® January -June CENTRAL E}LE$
PERSON COLLECTING SAMPLES Susan Bostlan COUNTY Wake DWO/BOG
CERTIFIED LABORATORY ESC Lab # ENV 375 PHONE NO. [phone]
Lab # ADD TO LISTSERVE? ❑YES ®NO EMAIL:
OPTIONAL INFO: DISCHARGING TO CLASS: ®SA ❑HQW ❑PNA ❑Trout ❑Other
Part A: Stormwater Monitoring Requirements
Outfall No.
Date Sample
Collected
(mo/dd/yr OR
NO FL0W)1
pH
(Standard
Units)
TSS
(mg/L)
Event
Duration
(minutes)
Total
A
Rainfall
(in)
In Tier 2
Monthly
Monitoring?
(y/n)
# of Months in Z Tier
2 Sampling
-
-
6-9
100 '
-
-
-
-
001
04/30/14
7.05
7.6
180
1.12
n
002
04/30/14
11.63
64
180
1.12
n
003
04/30/14
8.90
260
18D
1.12
n
If "NO FLOW" or "NO DISCHARGE, Enter "NO FLOW" or "NO DISCHARGE" for each outfall here. Please make sure to mark the sample period above,
z If a value is in excess of the benchmark, or outside the benchmark range (for pH), you must implement the Tier 1 or Tier 2 responses in the General Permit. Tier 2
Monthly sampling shall be done until 3 consecutive samples are below the benchmark or within the benchmark range.
3 TSS benchmark values are 100 mg/l, except when discharging to ORW, HQW, Trout, and PNA waters where they are 50 mg/I.
For each sampled measurable storm event the total precipitation must be recorded using data from an on -site rain gauge.
Permit Date: 7/1/2011-60/30/2015 Last Revised 7/13/11
Page 1 of 2

;r
- — Part B: Vehicle Maintenance Activity Monitoring Requirements for facilities using > 55 gal of new motor oil/month — averaged over a calendar year.
Outfall
No.
Date Sample
Collected
(mo/dd/yr)1
PH
(Standard
Units)
TPH using method
1664A SGT-HEM
(mg/L)
Total Suspended
Solids
(mg/L)
Event
Duration
(minutes)
Total
a
Rainfall
(in)
New Motor Oil
Usage
(gal/month)
In Tier 2
Monthly
Monitoring?
(Y/n)
#f of Months
in Tier 2
Z
Sampling
6-9 2
15
300 '
-
-
-
-
-
HAS YOUR FACILITY HAD 4 OR MORE BENCHMARK EXCEEDENCES AT ANY ONE OUTFALL (INCLUDING VEHICLE MAINTENANCE)? YES ❑ NO
HAVE YOU CONTACTED THE REGION? YES ❑ NO
REGIONAL OFFICE CONTACT NAME:
Mail Original and one copy of this DMR (including all "No Flow" & "No Discharge" reportsl within 30 days of receipt of sample (or at end of monitoring Deriod
in case of "No Flow") to:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I
am aware that there ie significar}E-*enalties for Wbmitting false information, including the possibility of fines and imprisonment for knowing violations."
(Signature of Permittee)
Permit Date: 7/1/2011-60/30/2015
6/27/2014
(Date)
Last Revised 7/13/11
Page 2 of 2

PROCESS WASTEWATER — Quarterly Discharge Monitoring Report
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Click here to enter text.
CERTIFIED LABORATORY: ESC Lab # ENV375_
Lab #
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitoring Reauirements
SAMPLE COLLECTION YEAR: 2014
SAMPLE QUARTER: ❑Jul -Sept ❑Oct -Dec ®Jan -March
COUNTY: Wake
PHONE NO. (_919 _) 460-5317
ADD TO L€STSERVE? DYES ®NO EMAIL:
❑April -June
DISCHARGING TO CLASS: ®SA ❑HQW ❑PNA ❑Trout ❑Other
OPTIONAL INFO:
Outfall No.
Date Sample
Collected'
(mm/dd/yr)
Type of Wastewater
(VE, RM, MD)2
PH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH using
method 1664A
SGT-HEIW
(mg/L)
Discharge
Duration
(minutes)
Total Flow
(gallons/day)'
-
-
-
6_93,4
303,5
53
(15)6
-
-
001
No discharge
M
kY 0 9, 2014
4C1
� i i�hlL r'fL.CJ
A
rVVLil L7VV
1 If wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge' here. Please make sure to mark the sample quarter above.
2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3 If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-9.5 S.U. for discharges to saltwaters.
5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date: 7/l/2010-06/30/201S
Last Revised 07/13/11
Page 1 of 2

5 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
' Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUAL SUMMARY (INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
Division of Energy, Mineral and Land Resources
Attn: DWQ Central Files
1612 Mail Servioe Center
Raleigh, North Carolina 27699-1612
[phone]
YOU MUST SIGN_THIS CERTIFIG4TION FOR ANY INFORMATION REPORTED.
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the Information submitted. Based on my Inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the Information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
(Signature of Permittee)
Permit Date: 7/1/2010-06/30/2015
(Date)
Last Revised 07/13/11
Page 2 of 2

AM
PROCESS WASTEWATER -- Quarterly Discharge Monitoring Report
GENERAL PERMIT NO. NCG140000
CERTIFICATE OF COVERAGE NO. NCG140266
FACILITY NAME: _Thomas Concrete of Carolina- Morrisville Plant
PERSON COLLECTING SAMPLES: Susan Bastian
CERTIFIED LABORATORY: ESC Lab # ENV375
Lab #
LIMIT VIOLATIONS? YES ❑ NO
Part A: Wastewater Monitorina Reauirements
RECEIVED
JUL 0 7 ?0i4
CENTRAL FILE.`
DWOlBOG
SAMPLE COLLECTION YEAR: 2014
SAMPLE QUARTER: ❑Jul -Sept []Oct -Dec []Jan -March
COUNTY: Wake
PHONE NO. (_919 `) 460-5317
ADD TO LISTSERVE? []YES ®NO EMAIL:
®April -June
DISCHARGING TO CLASS: ®SA ❑HQW ❑PNA ❑Trout ❑Other
OPTIONAL INFO:
Outfall No.
Date Sample
1
Collected
(mm/dd/yr)
Type of Wastewater
(VE, RM, MD)'
pH
(standard)
Total Suspended
Solids
(mg/L)
Settleable
Solids
(mL/L)
TPH usingDischarge
method 1664A
SGT-HEM'
(mg/L)
Duration
(minutes)
Total Flow
,
(gallons/day)
-
6-93,4
303,5
53
(15)6
-
-
001
No discharge
002
No discharge
003
No discharge
if wastewater systems have not discharged in this quarter — report "No Flow" or "No Discharge' here. Please make sure to mark the sample quarter above.
2 Report the abbreviation for the type of Authorized Wastewater Discharges here: Vehicle and Equipment Cleaning (VE), Raw Material Stockpiles (RM), Mixing Drum
Cleanout (MD). Report more than one type if the waste -stream is commingled.
3If an effluent limit is exceeded twice in a row, the permittee is required to institute monthly monitoring for that parameter for six months, unless DWQ RO staff
notifies you to continue monitoring.
4 pH limits are 6-9 S.U. for wastewater discharges to freshwaters, and 6.8-8.5 S.U. for discharges to saltwater$.
5 TSS limits are 20 mg/L for wastewater discharges to HQW waters, 10 mg/L for Trout and PNA waters, and 30 mg/L for all other water classifications.
Permit Date: 7/1/2010-06/30/2015
Last Revised 07/13/11
Page 1 of 2

6 Process wastewater discharges shall only be monitored for TPH when commingled with stormwater discharges from VMA areas. TPH does not have a limit for wastewater,
but instead is subject to benchmarks and provisions of Part IV, Section A, including the Tiered Response Action.
7 Flow rate can be measured continuously or calculated. Flow limits for wastewater discharges to HQW waters shall be set to 50% of the Summer 7Q10 Flow as per 15A
NCAC 02B .0224. Permittees who discharge wastewater to HQW waters shall obtain a Summer 7Q10 flow and report this information to DWQ. If the permittee cannot
obtain a Summer 7Q10 flow for the receiving waters at the discharge location, the permittee shall notify DWQ, and the DWQ Regional Office may require an annual flow
report on a case -by -case basis.
MAIL ORIGINAL AND ONE COPY OF THIS ANNUASUMMARY INCLUDING ALL "NO FLOW", "NO DISCHARGE") WITHIN 30 DAYS OF RECEIPT OF SAMPLE (OR
AT END OF MONITORING PERIOD IN CASE OF "NO FLOW") TO:
Division of Water Quality
Attn: DWQ Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[phone]
YOU MUST SIGN THIS CERTIFICATION FOR ANY INFORMATION REPORTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to
assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and imprisonment for knowing
violations."
(Signature of Permittee)
Permit Date: 7/1/2010-06/30/2015
6/30/2014
(Date)
Last Revised 07/13/11
Page 2 of 2