NCG030714_Monitoring Report_20220321

11707 Steele Creek Road
Charlotte, North Carolina 28273 USA
Phone [phone]
Fax [phone]
[e-mail]
Lanette Plyler
Director of Environmental, Health & Safety
March 16, 2022
NC Department of Environmental Quality
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Attn: Zahid Khan; Regional Engineer; Energy, Mineral, and Land Resources
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Re: Notification of Four Benchmark Exceedances at Stormwater Outfalls 004 and 006
CORMETECH, Inc. Kings Mountain, NC Facility (Certificate of Coverage NCG030714)
Dear Mr. Khan:
Pursuant to Part E, Section E-6, Table 4, Row 2-ii of the North Carolina General Industrial Stormwater
Permit NCG030000 with effective date July 1, 2021, CORMETECH, Inc. is submitting the following
notification.
Stormwater sampling of Outfall 004 has now resulted in four copper results in excess of the permit
benchmark of 0.010 mg/L. Stormwater sampling of Outfall 006 has now resulted in four copper results in
excess of the permit benchmark of 0.010 mg/L and four zinc results in excess of the permit benchmark of
0.126 mg/L. The table below provides details of the sample dates and results.
Outfall
Sample Quarter
Sample
Date/Quarter
Copper Result
(Benchmark —
0.010 m /L
Zinc Result
(Benchmark —
0.126 m /L
004
3rd Quarter 2021
8/31/2021
0.011
004
41h Quarter 2021
10/28/2021
0.025
004
December 2021 Monthly
12/29/2021
0.016
004
February 2022 Monthly
2/23/2022
0.021
006
3rd Quarter 2021
8/31/2021
0.019
0.160
006
41h Quarter 2021
10/28/2021
0.017
006
December 2021 Monthly
12/29/2021
0.078
0.420
006
February 2022 Monthly
2/3/2022
0.340
006
March 2022 Monthly
3/9/2022
0.011
0.700
In response to these benchmark exceedances for copper and zinc, CORMETECH has done the following:
• Implemented a Tier Three Response in accordance with the requirements detailed in Table 5 on
Page 15 of North Carolina General Industrial Stormwater Permit NCG030000;
• Conducted a stormwater management inspection;
CORMETECH, Inc. I
CORMETECH Confidential - This 0� :.:.gat a;, .;,,'oration other than recipient's
agreement that it shall not be reproduced, tent, or disposcd of directly or indirectly nor used for any purpose other than that for which it is specifically furnished.

e Initiated sampling and evaluation efforts to identify possible causes of the copper and zinc
benchmark exceedances; and
® Started preparing an Action Plan for submission to the North Carolina Department of
Environmental Quality Mooresville Regional Office for review and approval.
Please advise if you have questions regarding this notification. I can be reached via phone at 980-722-
1811 or via email at I.plyler _cormetech.com.
Regards,
Lane a Plyler
Director of Environmental, Health & Safety
CORMETECH Confidential Page 2 of 2

NCDEQ Division of Energy, Mineral and Land Resources
Stormwater Discharge Monitoring Report (DMR) Form for NCG030000 t`
Metal Fabrication 1
Click here for instructions o o CQ,�F�
Complete, sign, scan and submit the DMR via the Stormwater NPDES Permit Data Monitoring Report (D� 'Qyloddi::fit�rm vuithin
30 days of receiving sampling results. Mail the original, signed hard copy of the DMR to the appropriate ` �l�nal Office.
Certificate of Coverage No. NCG03 0714
Person Collecting Samples: Clinton Rayfield
Facility Name: CORMETECH, Inc.
Laboratory Name: Pace Analytical
Facility County: Cleveland
Laboratory Cert. No.: 329
Discharge during this period:] Yes ® No (if no, skip to signature and date)
Has your facility implemented mandatory Tier response actions this sample period for any benchmark exceedances? Yes ErNo
If so, which Tier (I, Il, or III)? Tier 11
A copy of this DMR has been uploaded electronically via https://edocs.deg.nc.gov/Forms/SW-DMR Yes No
Date uploaded: 3/18/2022
Analytical Monitoring Requirements for Outfalls with Industrial Activities — Benchmarks in (Ited)
Parameter
Parameter
Outfall001
Outfall004
Outfall006
Outfall
Outfall
Code
N/A
Receiving Stream Class
Class C
Class C
Class C
N/A
Date Sample Collected MM/DD/YYYY
2/23/2022
2/23/2022
2/3/2022
46529
24-Hour Rainfall in inches
0.50
0.50
0.50
C0530
TSS in mg/L (100 or 50*)
20
34
9.7
00400
pH in standard units (6.0-9.0 FW,
7.95
6.24
6.41
6.8-8.5 SW)
01119
Copper, total recoverable in mg/L
0.0057
0.021
0.0098
(0.010 FW, 0.0058 S1A!)
01051
Lead, total recoverable in mg/ L
0.0012
0.0033
<0.001
(0.075 FW, 0.22 SW)
01094
Zinc, total recoverable in mg/ L (0..U,6
0.079
0.130
0.340
FW, 0.095 SW)
00340
Chemical Oxygen Demand (COD) in
39
<20
<20
mg/L (120)
00552
Non -Polar Oil & Grease in mg/L (a..';)
<6.7
<5.4
<10
Outfalls to Outstanding Resource Waters (ORW), High Quality Waters (HQW), Trout Waters (Tr) and Primary Nursery Areas (PNA)
have a benchmark TSS limit of !10 s ii /L. All other water classifications have a benchmark of 100 njg/L
11I1 (Freshwater) !NJ (Saltwater)
Notes (optional): February 2022 Monthly(Tier II Response for Outfalls 001, 004 & 006)
"I certify by my signature below, 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."
Signature of Permittee or Delegated Authorized Individual
3/18/2022
Date
[e-mail] 980-722-1811
Email Address Phone Number