NC0020621_2023_03_Audit_Cover Letter_20230404

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
Town of Boone
Rick Miller
Public Works Director
PO Drawer 192
Boone, NC 28607-0192
NORTH CAROLINA
Environmental Quality
April 4, 2023
SUBJECT: Pretreatment Audit
Town of Boone
Main Program Permit (NPDES) #NC0020621
Watauga County
Dear Mr. Miller:
On 3/30/2023, a Pretreatment Audit was performed by Tricia Lowery of the Winston-Salem Regional
Office. Karen Reece, Pretreatment Coordinator, assisted you and was present during the audit. The purpose
of this audit was to determine the effectiveness of the Control Authority's pretreatment program regarding
SIU inspections., which includes the initial interview, tour of SIU facility, sampling review, and an exit
interview.
Background
The Control Authority has #1 Significant Industrial Users (SIUs), which is a 433 categorical user (CIU).
Control Authority Interview
There are no plant problems related to pretreatment. ASU WTP (NPDES Permit #NC0044423)
submitted to the Town of Boone an Industrial User Wastewater Survey and Discharge Permit
Application. The anticipated date of initial process wastewater discharge is 1/l/2025.
Pretreatment Program Elements Review
The Headworks Analysis (HWA) renewal was submitted on 9/28/2020. The HWA last approval date is
3/21/2022. The next HWA is due on 7/1/2026.
The last Industrial Waste Survey (IWS) was submitted on 3/1/2019. The IWS was approved on 3/1/2019.
The next IWS is due on 4/1/2024.
The Sewer Use Ordinance (SUO) was approved on 11/7/2012.
The Enforcement Response Plan (ERP) was submitted on 1/30/2020 and approved on 2/13/2020.
DffNorth Carolina Department of Environmental Quality I Division of Water Resources
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Winston-Salem Regional Office 1 450 W. Hanes Mill Rd, Suite 300 I Winston-Salem, North Carolina 27105
M336.776.9800
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The Long -Term Monitoring Plan (LTMP) was submitted on 3/31/2022 and is awaiting approval.
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 Charleston Forge #IUP 0004 revealed that the monitoring data was well organized
and compliant.
The slug control plan for Charleston Forge #IUP 0004 was in good order.
Action Items
No other action items were noted.
The pretreatment program is considered satisfactory. The Control Authority runs an excellent pretreatment
program. If you have any questions, please contact Tricia Lowery at [phone], or me at (336) 776-
9800.
Sincerely,
DocuSigned by:
945B49E225C94EA...
Lon T. Snider
Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ — WSRO
REQ� North Carolina Department ofEnvironmental Quality I Division ofWater Resources
Winston-Salem Regional Office 1 450 W. Hanes Mill Rd, Suite 300 1 Winston-Salem, North Carolina 27105
NORTH CAROLINA 336.776.9800
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