NCG140350 DMR SW 20210119

ANNUAL SUMMARY DISCHARGE MONITORING
REPORT (DMR) — STORMWATER
SUBMIT TO CENTRAL OFFICE*
General Permit No. NCG140000
Calendar Year 2020
`Report ALL STORMWATER monitoring data on this form (include "No Flow"/"No Discharge" and Benchmark
Exceedances) from the previous calendar year to the DEQ by MARCH 1 of each year.
Certificate of Coverage No. NCG140350
Facility Name: Thomas Concrete of Carolina — Wake Forest Plant FEB 0 8 2021
County: Wake CENT-KAL FILES
Phone Number: [phone] Total no. of SDOs mAWEREVIOM
Certified Laboratory ESC - Pace Analytical 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),
m /I
pH,
SU
Non -polar O&G
(EPA Method
1664 SGT-HEM ,
( ))
mg/l (VMA)
Happiicab/e
New Motor Oil
Usage (gal/mo.)
Mappllcable
Stormwater
Benchmarks
Indicate NO ble
applicable
Circle Benchmark
100/50
c f
6.U-9.0
J
1 e
>55 gNon-p average rmonit Bing and
Non -polar OdG monitoring
Date Sample
Collected,
mo/dd/ r
01/31/20
NO FLOW
02/06/20
2.2
58.9
11.45
<5.15
>55
03/31/20
NO FLOW
04/30/20
NO FLOW
05/20/20
1.06
5.8
11.47
1 U
>55
06/17/20
0.84
82.8
11.41
<1.27
>55
07/31/20
NO FLOW
08/31/20
NO FLOW
09/09/20
0.40
410
10.86
1.38
>55
10/31/20
NO FLOW
11/11/20
0.06
1 146
11.00
2.08
>55
12/16/20
0.12
1 225
11.79
U
>55
Permit Date 8/1/2017 — 6/30/2022
Last Revised 8-22-2015

Certificate of Coverage No. NCG140350
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 §122.22]
Signature A",
Date I i f "
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