NCG020172_Monitoring Report_20201110

UU110n
Materials Company
November 10, 2020
Central Files
Stormwater Permitting Program
1617 Mail Service Center
Raleigh, North Carolina, 27699-1617
RE: Vulcan Materials Company - Cabarrus Quarry
COC No. NCG020172
Stormwater Outfall 002
To Whom It May Concern:
In accordance with General Permit NO. NCG020000 Vulcan Materials Company, LLC (Vulcan) is
submitting notification within the 30 days of receipt of analytical results indicating an exceedance of a
benchmark value as outlined in Part V Section E. A copy of the discharge monitoring report for the
above referenced facility, which includes the laboratory report received on October 13, 2020, is provided
as Attachment 1.
Vulcan is in the process of implementing the Tier One response requirements for turbidity exceedances as
detailed in Part IV, Section A of General Permit No. NCG020000. Specifically, Vulcan attempted to the
identify and evaluate the possible causes of the benchmark exceedance within one week of being notified
of the results. The exact cause could have been from sediment build up along the spillway weir section.
The facility plans to take another sample during the next qualified storm event. The pond spillway riprap
filter stone section has been cleaned and new filter stone replaced.
Documentation of all responses in accordance with the Tier One requirements for turbidity will be
maintained with the facility's Stormwater Pollution Prevention Plan.
If you have any questions about the above information, please contact Justin Fesperman, Plant Supervisor
at 704-788-7833 or me at 704-547-7076.
Sincerely,
Tony Johnson
Environmental Engineer
cc: Zahid Khan, NCDEQ-MRO
Justin Fesperman
CHARLOTTE REGIONAL OFFICE — VULCAN CONSTRUCTION MATERIALS, L.L.C.
11020 David Taylor Drive, SUITE 105, CHARLOTTE, NC 28262, TELEPHONE [phone], FAX [phone]

ATTACHMENT 1
Vulcan Construction Materials, LLC
Cabarrus Quarry
21 Period 2020 DMR Report

RESE
LAbo
Analytical
October 12, 2020
ARCh & ANA1yTICAL
RATORIES, INC.
/process Consultations
Vulcan Materials Company/Cabarrus Quarry
PO Box 5206
Concord, NC 28027
Attention: Justin Ferperman
Chemical Analysis for Selected Sampling
Locations Identified as Vulcan Quarry - Cabarrus
A Vulcan Materials Com anv Pro"ect collected September
29 2020
Benchmark
002
Values
Date
Parameter Method Results
Units
Limit
Analvzed
Analyst
PH SM 4500 H+B-2000
7.50
SU
6.0 - 9.0
NIA
Per COC
Settable Matter SM 2540 F-1997
<0.1
mI/L
0.1
09/30/20
AW
TSS SM 2540 D-1997
30.3
mg/l
100
09/30f20
AW
Turbidity EPA 180.1
73.5
NTU
50
09/30/20
AW
RAL Sample #
88221-01
Date Collected
09/29/20
Time Collected
1550
Outfall Number
002
mglL = milligrams per Liter parts per million (ppm)
SH Standard Units
N.:A - Not Applicable
ml/L = milliliters per Liter
NTU = Nepthalometric Turbidity Units

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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"/"No Discharge" and Benchmark
Exceedances) from the previous calendar year to the DEQ by MARCH 1 of each year.
Certificate of Coverage No. NCG020172
Facility Name: Vulcan Construction Materials, LLC/Cabarrus Quarry
County: Cabarrus
Phone Number: [phone] Total no. of SDOs monitored
Certified Laboratory Research & Analytical Laboratories, Inc. Lab # 34
Lab #
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 ❑
No, turbidity benchmark exceedances did not require monthly monitoring ❑
Other ❑
Outfall No.
Total
Rainfall,
inches
TSS,
mg/I
SS,
mlll
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Non -polar
O&G, mg/I
(VMA)
New
Motor Oil
Usage
al/Mo.
Stormwater
Benchmarks
Indicate NO
FLOWN
Circle
Benchmark
100/50
0.1
circle
Benchmark
50/25/10
NIA
Standard appater lies
NIA
Standard applies
15
>55 gaumo.
average requires
T aG and
Date Sample
Collected,
mo/ddl r
05/18/20
1.42
5.0
<0.1
4.34
N/A
NIA
NIA
NIA
09/29/20
0.44
30.3
<0.1
73.5
NIA
NIA
NIA
NIA
Permit Date 10/1/2015 — 9/30/2020
Last Revised 10-2-2015

Certificate of Coverage No. NCG020172
Additional Outfall Attachment (make copies as needed for additional outfalls)
Stormwater Discharge Outfall (SDO) No. 005 VMA Outfall? Yes ❑ No
Is this outfall currently in Tier 2 for any parameter? Yes ❑ No ED
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 ❑
No, turbidity benchmark exceedances did not require monthly monitoring ❑
Other
Outfall No.
Total
Rainfall,
inches
TSS,
mgll
SS,
mlll
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Non -polar
O&G, mg/I
(VMA)
New
Motor Oil
Usage
al/mo.
lndicataNO
FCO;
able
Circle
Benhrnark
100150
.50/25/10
Circle
Benchmark
NIA
Standard appli
N/A
ard
Standard applies
>ss eSformwater
average requires
TSS and itona`Benchmarks
O&G monitoring
Date Sample
Collected,
mo/ddl r
01/01/20 -
06/30/20
No Flow
Permit Date 10/1/2015 - 9/30/2020
Last Revised 10-2-2015

Certificate of Coverage No. NCG020172
Additional Outfall Attachment (make copies as needed for additional outfalls)
Stormwater Discharge Outfall (SDO) No. 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 ❑
No, turbidity benchmark exceedances did not require monthly monitoring ❑
Other ❑
Outfall No.
Total
Rainfall,
inches
TSS,
mgll
SS,
mlll
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Non -polar
O&G, mgll
(VMA)
New
Motor Oil
Usage
allmo.
Stormwater
Benchmarks
lndicateNO
FLOiN'r
a kable
Circle
Benchmark
100150
0.1
Circle
Benchmark
50/25/10
NIA
Water Quality
Standard applies
NIA
Water Quality
Standard applies
15
>ss a requires
averagarequires
TSS and Non -polar
O&G monitoriEg
Date Sample
Collected,
molddl r
Permit Date 101112015 — 9/30/2020
Last Revised 10-2-2015

Certificate of Coverage No. NCG020172
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] �7
Signature
Date No
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 10-2-2015