NCG030124_Monitoring Info_20201102

V
October 30, 2020
NCDENR
Division of Energy, Mineral, and Land Resources
Land Quality Section
450 West Hanes Mill Rd., Suite 300
Winston-Salem, NC 27105
Attention: Sue White
Subject: Permit No. NCG030124
Stormwater Report — Outfall 003 Monthly Tier II
Dear Sue:
Wieland Copper Products, LLC
3990 US 311 Hwy N
Pine Hall, NC 27042
Phone: [phone]
Fax: [phone]
[e-mail]
www.wielandcopper.com
Enclosed are the sampling results for the month of October 2020 for Outfall 003.
WCP is in Tier II for TSS on Outfall 003.
NC Department of
Environmental Quality
Received
WCP has implemented the Tier II Response Plan outlined in the Stormwater Permit,
NV Q 2 2020
Winston-Salem
Regional Office
The possible causes could be that a heavy down pour washed sediment, dust, and dirt from the tires of
heavy trucks, into that outfall. We keep that area clean and swept as much as possible.
The outfall contains a significant amount of sediment. WCP will look into hiring a contractor to properly
clean drainage area.
If you have any questions please feel free to call me at [phone].
;7Sin rel
Tny R. Sprinkle
Environmental & Facilities Supervisor
Cc: Central Files

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Stormwater Discharge Calculations
WIELAND COPPER PRODUCTS, LLC
2020 Calendar Year
Rationale for Discharge Calculations
The rational formula is used for the basis of the calculations. The rational formula has been
developed to calculate the rate of run-off from a rain event of a given intensity over a given area.
The formula is written:
Q=CIA
where: Q is the rate of run-off flow in cubic feet per second (CFS)
I is the rain intensity in inches per hour
A is the land area contributing run-off to the discharge point
and: C is a run-off coefficient which ranges from 0 for a completely pervious surface to
1.0 for a completely impervious surface.
The rational formula results from the fact that, for a completely impervious surface, a rainfall of
one inch over a period of one hour on an area of one acre will result in a run-off discharge of one
CFS. The run-off coefficient C can be thought of as a correction factor based on the percentage
of the total rainfall which will run off from a given area due to how pervious or impervious the
surface of that area is. Since the discharge permit for this facility requires an estimate of the total
discharge from the storm event during which samples are collected, we will use a modified form
of the rational formula to calculate the total discharge as follows:
Qt = CRA (0.027)
where: Qt is the total discharge in Million Gallons
C is the run-off coefficient as defined above
R is the total amount of rainfall in inches
A is the surface area contributing flow to the sample location in acres
and: The constant 0.027 in the modified equation corrects the units to Million Gallons
(MG) based on the fact that 1 acre -inch = 0.027 MG
For drainage areas which are comprised of a combination of pervious and impervious areas, the
formula can be written as follows:
Qt = [CiA1 + C2A21 (R) (0.027)
where: C1 = C factor for pervious areas
A i = pervious area contributing to the outfall in acres
C2 = C factor for impervious areas
A2 = impervious area contributing to the outfall in acres

Discharge Calculations
The total rainfall for the October 11, 2020 storm during which samples were collected at this
facility was 3.50 inches. We will use generally accepted conservative estimates of the run-off
coefficient of C= 1.71 for impervious areas, and C= 0.50 for pervious areas.
The drainage areas contributing to each of the five outfalls as follows:
Outfall
Total Area (acres)
Pervious Area (acres)
@ C=0.50
Impervious Area
(acres) @ C=0.90
003
5.26
2.63 (50%)
2.63 (50%)
Total Discharge at Stormwater Discharge Outfall 003
Qt = [(0.50)(8.05) + (0.90)(3.45)] (3.50) (0.027)
Qt = 0.673 MG
Page 2 of 2

\5:
l.)It, it onIIIonto
Qua lit;
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring )Report
Forguidance on filling oul this fornr, please vi.sil littps://deq.tic.gov/about/divisions/energy-mineral-land-l-CSourceS/
npdcs-stormwater-gps
Permit No.: N/C/ / / / / / / / or Certificate of'Coverage No.: N/C/G/0 /3 /0 / 1 /2 /4 /
Facility Name: Wieland Copper Products
County: Stokes
Inspector: Clifford Cain
Date of Inspection: 10/11/2020
Time of Inspection: 1551
Total Event Precipitation (inches): 3.50
Phone No.
All permits require qualitative monitoring to be perfornled during a "measurable storm event.",
A "measurable storm event" is a storm event that results in an actual discharge from the permitted site
outfall. The previous measurable storm event must have been at least 72 hours prior. The 72-hour stone
interval does not apply if the permittee is able to document that a shorter interval is representative f'or
local storm events during the sampling period, and the permittee obtains approval from the local DEMLR
Regional Office. i
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
1. Outfall Description:
Outfall No. 003
Receiving Stream:
Structure (pipe, (litch, etc.): Ditch
Describe the industrial activities that occur within the outfall drainage area: Copper manufacturing
Page 1 of 2
SWU-242, List modified 06/01/2018

2. CoIor: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
{light, medium, dark) as descriptors: Clear, light
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil, weak
chlorine odor, etc.): _None
4. Clarity: Choose the number which best describes the clarity of the discharge, where l is clear
and 5 is very cloudy:
1 Q 3 4 5
5. Floating Solids: Choose the number which best describes the amount of floating solids in the
stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
Q 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended solids in
the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
1 Q 3 4 5
7. is there any foam in the stormwater discharge? O Yes ® No.
& Is there an oil sheen in the stormwater discharge? OYes • No.
9. Is there evidence of erosion or deposition at the outfall? o Yes 0 No,
10. Other Obvious Indicators of Stormwater Pollution:
List and describe None
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposidon may be
indicative of pollutant exposure. These conditions warrant fbrther investigation.
Page 2 of 2
SWU 242, Last nuxHficd G O MM

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For: Wieland Copper Products, Inc.
3990 US 311 HWY N
Pine Hall, NC 27042
Attn: Tony Sprinkle
Client Sample ID: 003
Site: Wieland
.Parameter
Copper, Total
Hydrocarbon O&G
Lead, Total
pH
Temperature (Thermometric)
Total Suspended Solids
Zinc, Total
Report of Analysis
10/20/2020
�+��rr'r�rrrt
is d: cn
tq NC #34 Z;
NC 937701
w
r
Nte D ANAe
Lab Sample ID:
88880-01
Collection Date:
10/11/2020 15:51
----------
Method
Result
Units
Rep Limit Analyst Analysis Date/Time
EPA 200.7
818
ug/L
5
MM 10/19/2020
EPA 1664 Revision B/Silica Gel
<5
mg/L
5
EE 10/15/2020
EPA 200.7
<5
ug/L
5
MM 10/19/2020
SM 4500 H+13-2011
6.80
Std. Units
10/11/2020 1551
SM 2550 B-2010
20.0
°C
10/11/2020 1551
SM 2450 D-2011
33.4
mg/L
5
AW 10/14/2020
EPA 200.7
55.1
ug/L
10
MM 10/19/2020
NA = not analyzed
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 1