NCS000010_2021 DMR_20211014

Division of Energy, Mineral and Land Resources
Winston-Salem Regional Office
ATTN: NDPES-Stormwater-Individual
450 West Hanes Mill Road -Suite 300
Winston-Salem, NC 27105
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
ARTICLE NUMBER:
RE: Storm Water Discharge Monitoring Report — Semi -Annual Monitoring
Second Period-2021
Permit Number NCS000010
Dear Sir/Madam:
EVonIK
POWER TO CREATE
October 14, 2021
Evonik Corporation
2401 Doyle Street
Greensboro, NC 27406
www.evonik.com
Phone [phone]
Fax [phone]
Cell [phone]
[e-mail]
Evonik Corporation located at 2401 Doyle Street, Greensboro, Guilford County, North Carolina in accordance with National
Pollution Discharge Elimination System (NPPES) permit numberNCS000010 is submitting a copy of our September2021 Discharge
Monitoring Report (DMR).
This DMR represents a semi-annual monitoring event for the pollutants as required by the storm water permit. The September
2021 analyses indicate that Chemical Oxygen Demand (COD) was reported below the benchmark monitoring value (BMV) at the
site's storm water discharge outfalls 1-4. BOD results for outfalls 2 was above the BMV. In addition, the results for all other
characteristic analyses were below the assigned BMV's. This is the first exceedance of BOD.
Evonik will address the BOD benchmark exceedance by instituting Tier One management for Outfall 2. If you have any questions
or concerns, please feel free to contact me at [phone], or our environmental consultant, Tony Rossano of Antea Group at
[phone].
Sincer y,
Z�k-
Brian Caruthers
Evonik Corporation
EHS Specialist
Attachment — Discharge Monitoring Report