NCG020187 DMR SW 20210204

ANNUAL SUMMARY DISCHARGE MONITORING
REPORT (DMR) — STORMWATER
SUBMIT TO CENTRAL OFFICE*
General Permit No. NCG020000
Calendar Year 2020
'Report ALL STORMWATER monitoring data on this form (indude "No riovrrNo Discharge" and Benchmark
Exceedances) from the previous calendar year to the DEQ byMARCH 1 ofeach year
cate of Coverage No. NCG020187
y Name: Central Rock Quarry
y: Guilford
Number: 336-674-0836 Total No. of SDOs Monitored 2
ed Laboratory Pace Analytical Lab # 40
Lab #
ormwater Discharge Outfall (SDO) No. I i VMA Outfall? Yes No
this outfall currently in Tier 2 for any parameter? Yes No
as this outfall ever in Tier 2 during the past year? Yes No
:his outfall was in Tier 2 last year, was monthly monitoring discontinued?
�s, enough consecutive samples below benchmarks to decrease frequency
ts, received approval from DEMLR to reduce monitoring frequency
1, turbidity benchmark exceedances did not require monthly monitoring
Total Rainfall,
Turbidity,
Upstream (U)
Downstream
Non -polar O&G,
New Motor Oil
Outfall No. 1
inches
TSS, mgll
SS, mill
NTU
Turbidity, NTU
(D)
mgn (VMA)
Usage
NTUdity,
(gal/Mo.)
Stormwater
`""°
"r,"
NIA
NIA
Benchmarks
AOFLO1V
100150
01
50/25/10
s,.°.a.°°°,
s.r d.d.°,l�..
15
Date Sample
-
- -liffili
Collected,
moldd/yr
525/2020
0.21
4
<0J0
J.I
12/16202/
0.29
822
<0_IO
�G.G
Stormwater Discharge Outfall (SDO) No. 1 2 1 VMA Outfall? Yes X No
Is this outfall currently in Tier 2 for any parameter? Yes No X
Was this outfall ever in Tier 2 during the past year? Yes No X
If this outfall was in Tier 2last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency
Yes, received approval from DEMLR to reduce monitoring frequency
No, turbidity benchmark exceedances did not require monthly monitoring
Other
Downstream
New Motor Oil
Outran No. 2
Total Rheisfall,
TSS, mgll
SS, mill
7uNTUty,
Upstreamidity, NTU
(D)
Non-polar
mg/1 (VMA)G
Usage
NTU
(gallMo.)
Stormwater
,�,.xoriown•ow�.,v.
e.amm,�t
e.,,.—,
NIA
N/A
15
Benchmarks
100/50
U.1
50/26/10
•.�a.,°v
Date Sample
Collected,
molddlyr
1/I8-6/18
No Oburved Dlsch;u��c
6/I8-12/18
No Oburved Discharuc
Permit uate tun/Lu15-9r3octom
Last Redsed 10-2-2015

Certificate of Coverage No. NCG020187
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, acourale, 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: cl�a"JL2
Date: 2/4/2021
Mail Annual Summary Stormwater DMR to the NCDEQ Central Office:
Note the address is correct — Central Files is housed in DWR (paj 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 Dale 101112015- 913012020
Last Revised 10-2-2015