NCG140266_DMR SW_20220222

ANNUAL SUMMARY DISCHARGE MONITORING
REPORT (DMR) —STORMWATER
SUBMIT TO CENTRAL OFFICE*
General Permit No. NCG140000
Calendar Year 2021
Report ALL STORMWATER monitoring data on this form (include "No Flow"/"No Discharge" and Benchmark
Exceedences) from the Drevious calendar veer to the DEO by MARCH f of each veer.
Certificate of Coverage No. NCG14
Facility Name: Thomas Concrete of Carolina - Morrisville Plant
County: Wake
Phone Number: 9( 19 )460-5317 Total no. of SDOs monitored 3
Certified Laboratory Pace Analytical Lab # 375
Lab #
Stormwater Discharge Outfall (SDO) No. 001 VMA Outfall? Yes No ❑
Is this outfall currently in Tier 2 for any parameter? Yes ❑ No El
Was this outfall ever in Tier 2 during the past year? Yes ❑ No 0
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.
oot
Total Rainfall,
inches
Total
Suspended
Solids TSS
( )r
m /I
pH,
SU
Non -polar 08G
(EPA Method
1664 SGT-HEM
( ))
mg/I (VMA)
tlapplicable
New Motor Oil
Usage (gal/mo.)
N.ppn.,er.
Stormwater
Benchmarks
4Wlufa NO FLOWIr
apPlhabh
cjra. een�hrn.rx
100150
6.0-9.0
15
>55 gaVma. mope requIrea T55 and
Noropobr O&G ...11.0,
Date Sample
Collected,
mo/ddl r
01/25/21
0.06
5.6
6.74
<1.29
>55
02/11/21
0.89
12
7.37
2.08
>55
03/16/21
0.18
11.8
8.76
1.56
>55
04/21
NO FLOW
05/21
NO FLOW
06121
NO FLOW
07/21
NO FLOW
08/21
NO FLOW
09/21
NO FLOW
10/21
NO FLOW
11121
NO FLOW
12/21
NO FLOW
Permit Date 8/1/2017 — 6/30/2022
Last Revised 8-22-2015

Certificate of Coverage No. NCG14 0❑ 20©©
Additional Outfall Attachment (make copies as needed for additional ouffalls)
Stormwater Discharge Outfall (SDO) 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.
002
Total Rainfall,
inches
Total
Suspended
Solids (TSS),
m /I
pH,
SU
Non -polar O&G
(EPA Method
1664 (SGT-HEM)),
mgll (VMA)
n.ppm.br.
New Motor Oil
Usage al/mo.
9 (9 )
n+ppllcMle
Stormwater
Benchmarks
MEk+m Noplown
+pplkabl.
Gh°" Ben.hm+"
100/50
6.0.9.0
15
>SS p+Vnw.+v......... T"and
N.nppl+, 06G mo bMq
Date Sample
Collected,
—
..
tr .
01/21
NO FLOW
02/21
NO FLOW
03/16/21
0.18
11.8
8.76
1.56
>55
04/21
NO FLOW
05/21
NO FLOW
06/21
NO FLOW
07/21
NO FLOW
08/21
NO FLOW
09/21
NO FLOW
10/21
NO FLOW
11/21
NO FLOW
12121
NO FLOW
Permit Date 8/1/2017 — 6/30/2022
Last Revised 8-22-2015

Certificateof Coverage No. NCG14 :12:1©©
Additional Outfall Attachment (make copies as needed for additional outfalls)
Stormwater Discharge Outfall (SDO) No. 003 VMA Outfall? Yes ❑ No ❑✓
Is this outfall currently in Tier 2 for any parameter? Yes I'] 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.
003
Total Rainfall,
inches
Total
Suspended
p
Solids (TSS),
m /I
pH,
SU
Non -polar O&G
(EPA Method
1664 (SGT-HEM)),
mgll (VMA)
New Motor Oil
Usage allmo.
9 19 )
Stormwater
Benchmarks
Inikare Ne FLGWIr
app ka6le
ci,an eanamnaa
100/50
6.0.9.0
16
a55 gafto. ave,age requires TSS and
NonyoHr Obe mon o np
Date Sample
Collected,
mo/dd/ r
01/25/21
0.06
368
9.75
-
-
02/11/21
0.89
231
9.12
-
-
03/16/21
0.18
NO
8.96
-
-
04/21
NO FLOW
05/21
NO FLOW
06121
NO FLOW
07/08/21
2.52
128
11.56
-
08/21
NO FLOW
09/21
NO FLOW
10/21
NO FLOW
11/21
NO FLOW
12/21
NO FLOW
Permit Date 8/112017-6130/2022
Last Revised 8-22-2015

Certificate of Coverage No. NCG14 91pp®
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 violatlons "
[Requlmd by 40 CFR §122.22]
Signature c
Date
09 , ( ---
Mail Annual Summary Stormwater DMR to the NCDEQ Central Office:
Note the address is correct — Centre! Files !s housed in DINR (no 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 — 613012022
Last Revised 8-22-201