NC0003760_NOD-2023-LV-0044 response_20230210

C,OVATIOfl B I OTM
February 10, 2023
Mr. Robert Tankard
Division of Water Resources
Washington Regional Office
943 Washington Square Mall
Washington, NC 27889
[e-mail]
RE: Notice of Violation Response (NOV-2023-LV-0044)
Covation Biomaterials Kinston Site (NC0003760)
Dear Mr. Tankard,
The Covation Biomaterials Kinston Site received a Notice of Violation ("NOV") for the November 2022
Discharge Monitoring Report ("DMR") due to an exceedance of the permit limits for zinc at Outfall 003.
On November 17, 2022, the zinc concentration in a composite sample collected at Outfall 003 exceeded
the applicable daily maximum and monthly average permit limits. As noted in the comments to the
November 2022 DMR, the only non -routine activity occurring during the sample time frame was painting
operations associated with warehouse modifications.
On November 30, 2022, a voluntary grab sample was collected at Outfall 003 and the zinc concentration
was well below permit limits. This reading is consistent with previous results collected for Outfall 003.
Various sampling conducted in December 2022 and January of 2023, confirm zinc concentrations at
Outfall 003 remain below permit limits. Table 1 provides a summary of the recent zinc analyses.
Table 1. Outfall 003 Zinc Concentrations
Date
Sample Type
Total Zinc (µg/L)
11/17/22
Composite
389
11/30/22
Grab
153
12/15/22
Composite
230
01/23/23
Composite
151
01/30/23
Grab
181
The Kinston Site does not anticipate further issues with zinc concentrations at Outfall 003. Covation
Biomaterials is committed to working with the Division of Water Resources ("DWR") and operating the
site consistent with the NPDES permit.
Please do not hesitate to contact me at [phone] if you have any questions or need any additional
information.
Sincerely,
3"ig 4ey 44,2i
Shelby Arellano
Environmental Engineer
Covation Biomaterials LLC
cc: Robbie Bullock, Division of Water Resources
David Suggs, Covation Biomaterials LLC
Covation Biomaterials LLC • Kinston Site • 4693 Hwy 11 N, Grifton, NC 28530