NC0021474_Pretreatment Audit Inspection Supporting Documentation_20200917 (2)

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
S. DANIEL SMITH
Director
Amy Varinoski
Compliance Manager
City of Mebane
106 East Washington Street
Mebane, North Carolina 27302
NORTH CAROLINA
Environmental Quality
September 17, 2020
SUBJECT: Pretreatment Audit Inspection (PAI)
City of Mebane
NPDES# NCO021474
Alamance County
Dear Ms. Varinoski:
On September 15, 2020 a Pretreatment Audit Inspection (PAI) was performed by Jim Gonsiewski
of the Winston-Salem Regional office. Ms. Varinoski, compliance manager for the City of
Mebane, was present. The purpose of this inspection was to determine the effectiveness of the
pretreatment program, which included: a detailed file review, review of the POTW plant
performance, sampling, and compliance judgement program, and adherence to the enforcement
response plan (ERP). Additionally, an inspection of the MetoKote PPG Coating Services facility
was conducted in conjunction with an inspection by the City of Mebane.
Background
The City has five (5) Significant Industrial Users (SIU), three (3) of which are categorical. The
treatment plant is permitted for 2.5 MGD.
Pretreatment Program Element Review
The Headworks Analysis (HWA) renewal was submitted on March 24, 2016. The HWA was
approved on June 3, 2016. The next HWA is due on March 31, 2021.
The last Industrial Waste Survey (IWS) was submitted on January 4, 2016. The IWS was approved
on March 7, 2016. The next IWS is due on December 1, 2020.
The Sewer Use Ordinance (SUO) was approved on December 12, 2012.
The Enforcement Response Plan (ERP) was approved on February 13, 2020.
E Q�� North Carolina Department of Environmental Quality I Division of Water Resources
_ Winston-Salem Regional Office 1 450 West Hanes Mill Road, Suite 300 1 Winston-Salem, North Carolina 27105
NORTH CAROLINA
D'p—enn f 336.776.9800

LTMP File Review
The Long Term Monitoring Plan (LTMP) was approved on July 18, 2019 and is being conducted
at the proper locations and frequencies.
Industrial User Permit (IUP) File Review
A review of the file for Synergy Health (40126) revealed that the monitoring data was well
organized and compliant.
A review of the file for Sandvik (40118) revealed that the monitoring data was well organized and
compliant.
A review of the file for Industrial Connections (90111) revealed that the monitoring data was well
organized and compliant.
The slug control plan for Synergy Health (90126) was in good order.
The slug control plan for Sandvik (90118) was in good order.
The slug control plan for Industrial Connections (90111) was in good order.
Action Items
No other action items were noted.
The pretreatment program is considered satisfactory. Ms. Varinoski maintains an excellent
program. If you have any questions please contact Jim Gonsiewski or me at [phone].
Sincerely,
Lon T. Snider
Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ — WSRO
cc: PERCS Unit — Mike Montebello (Electronic Copy)
WSRO Electronic Files
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