NCS000057_Benchmark Exceedance Notification_20240529

Peterson, Kathryn S
From: Peterson, Kathryn S
Sent: Monday, June 3, 2024 9:52 AM
To: [e-mail]
Cc: [e-mail]; [e-mail]
Subject: NCS000057 Venator Chemicals Stormwater Benchmark Exceedance Notification
Attachments: NCS000057_Benchmark Exceedance_20240530.pdf
Hi Jonna,
DEQ has received your notification of benchmark exceedance (attached document). Please continue to
follow the tier response procedures listed in your permit. Let us know if you have any questions, or need
technical assistance.
Best,
Kathryn
Kathryn Peterson
Assistant Regional Engineer
North Carolina Department of Environmental Quality
Division of Energy, Mineral and Land Resources
Office: [phone]
Mobile: [phone]
Email: [e-mail]
Mooresville Regional Office
610 East Center Avenue, Suite 301
Mooresville, NC 28115
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VENATOR
May 29, 2024
Mr. Jerry Eplin, Regional Supervisor
NCDEQ
Division of Energy, Mineral & Land Resources
610 East Center Ave Suite 301
Mooresville, NC 28115
le rry.ePl i nad eQ.nc.gov
707-235-2147
Sent via email on 5/29/2024
Subject: Notification of Benchmark Exceedance for Venator Chemicals Permit#
NCS000057: Monitoring Period: Q2 2024
Dear Mr. Eplin,
This notification is being made in accordance with our stormwater permit section D-5(d)
Table 2: Tier One Response for a Benchmark Exceedance.
Outfall 1 exceeds the benchmark for Aluminum, Copper and Zinc.
Outfall 2 exceeds the benchmark for fecal coliform, Copper and Zinc.
Please see the table below for the results versus the benchmark.
Parameter Benchmark Outfall1 Outfall2 Comment
5/9/2024 5/9/2024
TSS 100 mg/I 6 6 mg/I 11.1 mg/I
pH 6-9 7.5(Pace 7.1 (Pace)
Oil and 15 mg/I ND mg/I ND mg/I Not required unless>55
Grease gallons/month of oil on
average
BOD 30 m /I 16.5 m /I 2.7 m /I
COD 120 m /I 44.6 m /I 26.4 m /I
Fecal 1000 col/100 927 CFU/100 2500
Coliform ml ml CFU/100 ml
Total 30 mg/I 9.2 mg/I 2.7 mg/I
Nitrogen
Total Al 750 u /I 1300 u /I 501 u /I
Total As 340 u /I 10.9 u /I ND u /I
Chloride 860 m /1 8.2 m /l 1.1 m /I
Total 10 ug/I 40.8 ug/I 30.5 ug/I
Copper
Total 32 mg/I 12.7 mg/I 2.06 mg/I
Magnesium
Total 865 mg/l 9.61 mg/I ND mg/I
Sodium
Total Zinc 126 u /I 593 u /I 136 m /I
Harness None 109 m /I 1 32.6 ma/I
5910 Pharr Mill Road, Harrisburg, NC 28075, USA
Tel: [phone] Fax: [phone] [e-mail] www.venatorcorp.com

VENATOR
Venator will begin the process of implementing the Tier One Required Response/Actions as
defined in the operating permit referenced above. This is our first reporting under our new
permit so if any changes to the notification procedure are required please let me know.
This information will also be entered into eDMR.
Please contact me at 704-455-4171 or jonna stein[cd?venatorcorp.com if you need additional
information.
Sincerely,
Jonna Stein
Environmental Health and Safety Manager