NCG020086_DMR SW_20210216

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 (include "No Flow" i Discharge" and Benchmark
Exceedances) from the previous calendar year to the DEQ by MARCH 1 of each year.
Certificate of Coverage No. NCG0200086
Facility Name: Martin Marietta Materials, Inc. -Garner Quarry
County: Wake
Phone Number [phone] Total no. of SDO's monitored 1
Certified Laboratory Pace Analytical Lab # 12
Lab #
Stormwater Discharge Outfall (SDO) No. 001 VMA Outfall? Yes
No X
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 2 last year, was monthly monitoring discontinued?
c/
RECEIVED
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
FEB 2 $ 2021
Other
CENTFU\L FILES
Outfall No.
------- ---
Total
Rainfall,
inches
TSS
mgll
SS,
mill
Turbidity,
NTU
Upstream
(U) Turbidity
NTU
Downstream
(D) Turbidity
NTU
Non -polar
O&G, mgll
VMA
New
Motor Oil
Usage
allmo.
Stormwater
Benchmarks
Intliwte n0
FLOWd
a Ikable
Benchmark
Benchmark
10 50
0.1
circle
Benchmark
(D25/10
NA
water Duality
Standard applies
NA
wateroualay
Standard applies
15
requires
ave55 gal quires
average
TSS and Not polar
Date Sample
Collected,
mo/dd/yr
12/7/2020
0.3
46.1
ND
34.5
No Observed Discharge in 1st Period 2020
Permit Date 1011 /2015 - 9/30/2020
Last Revised 10/2/2015

Certificate of Coverage No. NCG020086
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 violation."
[Required by 40 CFR §122.22]
Signature
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 10/1/2015 - 9/30/2020
Last Revised 101212015