NCG030246_Notification of Tier III_20250403

Eplin, Jerry W
From: Pitner, Andrew
Sent: Thursday, April 3, 2025 6:00 PM
To: Smith, Carl (WL); Eplin, Jerry W
Cc: Adams, Jennifer H; Edgerton, Ronica S; Milton, Lorissa A
Subject: RE: [External] Corning Hickory Cable Plant - Stormwater Exceedance Notification
Including Jerry Eplin of DEMLR on this as they oversee your stormwater permit.
Andrew
Andrew H. Pitner, P.G.
Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office
Division of Water Resources
Department of Environmental Quality
704 235 2180 direct office
704 235 2100 MRO main line
704 235 2101 fax
DWR website: http://www.ncwater.org
610 East Center Avenue, Suite 301, Mooresville, NC 28115
D E
NORTH CAROLINA
t
Department of Environmental Quality
Email correspondence to and from this address is subject to the North
Carolina Public Records Law and may be disclosed to third parties.
From: Smith, Carl (WL) <[e-mail]>
Sent:Thursday, April 3, 2025 5:24 PM
To: Pitner, Andrew<[e-mail]>
Cc:Adams,Jennifer H <[e-mail]>; Edgerton, Ronica S<[e-mail]>; Milton, Lorissa A
<[e-mail]>
Subject: [External] Corning Hickory Cable Plant-Stormwater Exceedance Notification
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Mr.Andrew Pitner:
The Corning Optical Communications, LLC facility located at 1164 23rd St SE, Hickory, NC 28602
currently operates under General Permit No.
NCG030000, as evidenced by Certificate of Coverage No. NCG030246. Outfall#3 has exceeded the
benchmarkvalue for COD, such that the facility is subject to Tier Three requirements under Part E,
Section E-7 of General Permit No. NCG030000.The sites most recent exceedance of COD results from
the facility's Q1'25 stormwater sampling event resulted in a Chemical Oxygen Demand level of 130 mg/L.
The stormwater sample was collected on 3/5/25, and we received the analysis from Statesville Analytical
on 3/19/25.
Please refer to the chart below for the previous COD exceedances.
HMTC COD Benchmark Exceedances
Date Sample Taken Lab Result
04/05/2022 148 mg/L
05/06/2022 132 mg/L
10/12/2022 142 mg/L
03/05/2025 130 mg/L
The facility will begin monitoring Outfall#3 monthly, as required under Tier Three monitoring and will
evaluate what additional controls may be necessary.A follow up email communication of the action plan
will be submitted by 04/19/25 for your approval.
Please contact me if you have any additional questions.
Sincerely,
Carl Smith
HMTC Plant Manager
Office: [phone]
Cell: [phone]
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.
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