NC0021121_Pretreatment Compliance Inspection - Winston-Salem_20190702

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
Chris Marion
WWTP Supervisor
City of Mount Airy
P.O. Box 70
Mount Airy, North Carolina 27030
NORTH CAROLINA
Environmental Quality
July 2, 2019
SUBJECT: Pretreatment Compliance Inspection (PCI)
City of Mount Airy
NPDES# NCO021121
Surry County
Dear Mr. Marion:
On June 4, 2019 a Pretreatment Compliance Inspection (PCI) was performed by Jim Gonsiewski
of the Winston-Salem Regional Office. Mr. Chris Marion was present for the inspection. The
purpose of this inspection was to determine the effectiveness of the Town's pretreatment program,
which includes reviewing the files, POTW plant performance, industry monitoring data, and
adherence to the enforcement response plan (ERP).
Background
This is a 7 MGD permitted facility. The City has one (1) Significant Industrial User (SIU)
(Hanesbrands, Inc.) which is non -categorical. This facility is scheduled to be shut down in
September 2019. Another industry, Professional Rental Services, an industrial laundry, may
expand and produce enough flow to enter the pretreatment program in the near future.
POTW Interview
There are no plant problems related to pretreatment issues and no NPDES permit limit or
monitoring violations were recorded from March 2018 through April 2019. The facility is very
well operated.
Pretreatment Program Elements Review
The Headworks Analysis (HWA) renewal was submitted on March 14, 2016. The HWA was
approved on May 20, 2016. The next HWA is due on April 30, 2021.
NORTH CAROLINAD_E Q��
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North Carolina Department of Environmental Quality I Division of Water Resources
Winston-Salem Regional Office 1 450 West Hanes Mill Road, Suite 300 I Winston-Salem, North Carolina 27105
336.776.9800

The last Industrial Waste Survey (IWS) was submitted on October 30, 2018. The IWS was
approved on January 7, 2019. The next IWS is due on October 31, 2023.
The Sewer Use Ordinance (SUO) was approved on October 25, 2012.
The Enforcement Response Plan (ERP) was approved on October 25, 2012.
The Long -Term Monitoring Plan (LTMP) was approved on September 18, 2017.
LTMP File Review
The Long -Term Monitoring Plan (LTMP) is being conducted at the proper locations and
frequencies.
Industrial User Permit (IUP) File Review
A review of the file for Hanesbrands, Inc (#0001) revealed that the monitoring data was well
organized and compliant.
The slug control plan for Hanesbrands, Inc. (#0001) was in good order.
Action Items
No other action items were noted.
The pretreatment program is considered satisfactory. Mr. Marion runs an excellent pretreatment
program. If you have any questions please contact Jim Gonsiewski or me at [phone].
Sincerely,
/I D__ocuSiiggned by,
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Lon T. m er
Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ — WSRO
cc: PERCS Unit — Monti Hassan
Central Files
WSRO Files