NC0026689_Pretreatment Complaince Inspection for Denton_20191223

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Director
Troy Branch
Pretreatment Coordinator
Town of Denton
P.O. Box 306
Denton, North Carolina 27239
NORTH CAROLINA
Environmental Quality
December 23, 2019
SUBJECT: Pretreatment Compliance Inspection (PCI)
Town of Denton
NPDES# NCO026689
Davidson County
Dear Mr. Branch:
On November 20, 2019 a Pretreatment Compliance Inspection (PCI) was performed by Jim
Gonsiewski of the Winston-Salem Regional Office. Mr. Steven Abercrombie and Mr. Troy Branch
were 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 0.8 MGD permitted facility. The Town has one (1) Significant Industrial User (SILT)
which is not categorical. The publicly owned treatment works (POTW) has had exceedances of
dichlorobromomethane. This has been a recurring problem and the Town is actively working to
eliminate this constituent. The concentrations have been significantly reduced.
POTW Interview
There are no plant problems related to pretreatment issues and, other than dichlorobromomethane,
there are no NPDES permit limit or monitoring violations recorded from October 2018 through
October 2019. The facility is very well operated.
Pretreatment Program Elements Review
The Headworks Analysis (HWA) renewal was submitted on September 7, 2016. The HWA was
approved on November 10, 2016. The next HWA is due on September 1, 2021.
D North Carolina Department of Environmental Quality I Division of Water Resources
EQ�p
Winston-Salem Regional Office 1 450 West Hanes Mill Road, Suite 300 I Winston-Salem, North Carolina 27105
NORTH CAROLINA �
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The last Industrial Waste Survey (IWS) was submitted on March 6, 2015. The IWS was approved
on June 2, 2015. The next IWS is due on March 15, 2020.
The Sewer Use Ordinance (SUO) was approved on January 18, 2013.
The Enforcement Response Plan (ERP) was approved on December 4, 2018.
The Short Term Monitoring Plan (STMP) was approved on October 24, 2017.
STMP File Review
The STMP is being conducted at the proper locations and frequencies.
Industrial User Permit (IUP) File Review
The SIU was in compliance in 2019.
A review of the file for Century Hosiery (#0001) revealed that the monitoring data was well
organized and compliant.
The slug control plan for Century Hosiery (#0001) was in good order.
Action Items
No other action items were noted.
The pretreatment program is considered satisfactory. Mr. Branch runs an excellent pretreatment
program. If you have any questions please contact Jim Gonsiewski or me at [phone].
Sincerely,
Docuftned by:
L _ _T SMdcr
Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ — WSRO
Attachment: Pretreatment Compliance Inspection Report
cc: PERCS Unit — Monti Hassan (Electronic Copy)