NC0023876_Compliance Evlaution-Follow-up_20171127

Water Resources
Environmental Quality
November 27, 2017
Mr. Robert Patterson, Water Resources Director
City of Burlington
PO Box 1358
Burlington, NC 27216-1358
Subject: Follow -Up Compliance Evaluation Inspection Report
NPDES Permit NCO023876
South Burlington WWTP, Alamance County
Dear Mr. Patterson:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
RECEIVE®/DENR/DWR
DEC 0 5 2017
Water Resources
Permitting Section
On November 21, 2017, Paul DiMatteo and Patrick Mitchell of the Division of Water Resources ("Division"),
Winston-Salem Regional Office conducted a Follow -Up Compliance Evaluation Inspection of the above referenced
wastewater treatment system. The presence and cooperation of Mr. Rick Asher was greatly appreciated. The purpose of
this inspection was to further evaluate comments made during the previous inspection and summarized in our letter
dated November 8, 2017. Observations are summarized below.
Mercury Minimization Plan: A satisfactory plan was available for review during the inspection.
Effluent Flow Measurement: The secondary device was verified to be in a nonstandard location, but this did not
produce an error of greater than 10% when compared to a measurement taken from the standard location. We
recommend continuing to monitor the flow from this meter to ensure that results are reported within the 10% error
threshold.
The South Burlington WWTP was found to be in compliance with NPDES Permit NC0023876. If you should have
any questions, please do not hesitate to contact Paul DiMatteo at [phone] or our office at [phone].
Sincerely,
�',' herri V. Knight, P.E., Regional Supervisor
Water Quality Regional Operations Section
Winston-Salem Regional Office
Division of Water Resources, NCDEQ
Enclosures —Inspection Report and Summary
CC: Rick Asher, by email
WQS Winston-Salem Regional Office - Enforcement File
NPDES Compliance/Enforcement Unit - Enforcement File
Central Files
<=r Nothjng Compares..._,,,,
State of North Carolina I Environmental Quality
450 W Hanes Mill Road, Suite 300, Winston-Salem, North Carolina 27105
Phone [phone] FAX [phone]

United States Environmental Protection Agency
Form Approved
EPA Washington, D C 20460
OMB No 2040-0057
Water Compliance Inspection Report
Approval expires 8-31-98
Section A• National Data System Coding (I a, PCs)
Transaction Code NPDES yr/mo/day Inspection Type
Inspector Fac Type
1 IN 1 2 I9 I 3 I NCO023876 I11 12 17/11/21 17
18 1,• 1
19 1 G 1 20I I
211 I I I I I I I I I 11 I 1 I l l l f l l l l l l l l l l
l l l l l
l I I 1 1 I I I 166
Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA
------Reserved----
72 (ti (
67 70 LJ I 1 71 L_j J
L
73 �74 75 IJJ80
Section B. Facility Data
Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
POTW name and NPDES Dermit Number)
1100AM 17!11!21
14/07/01
Southside WWTP
2471 Boy Wood Rd
Exit Time/Date
Permit Expiration Date
Burlington NC 27215
11 45AM 17/11/21
19/06/30
Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
///
Richard Brian Asher/ORC/336-227-6261/
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Robert C Patterson,PO Box 1358 Burlington NC
272161358//336-222-5130/3365706175 No
Section C Areas Evaluated During Inspection (Check only those areas evaluated)
Flow Measurement 0 Records/Reports
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers
Date
Patrick Mitchell Division of Water Quality//336-776-96981
Paul DiMatteo�` WSRO WQ//336 691/
' �
Signature f Management Q A Reviewer Agency/Office/Phone and Fax Numbers
Date
EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete
Page#

NPDES yr/mo/day Inspection Type (Cont.
31 NCO023876 I11 12 17/11/21 17 18 i c i
Section D Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
The purpose of this Inspection was to further evaluate comments made during the previous inspection
and summarized in our letter dated November 8, 2017. Observations are summarized below.
Mercury Minimization Plan: A satisfactory plan was available for review during the inspection.
Effluent Flow Measurement. The secondary device was verified to be in a nonstandard location, but
this did not produce an error of greater than 10% when compared to a measurement taken from the
standard location. We recommend continuing to monitor the flow from this meter to ensure that results
are reported within the 10% error threshold.
Page#

Permit- NCO023876
Inspection Date 11/21/2017
Owner - Facility- Southside WWTP
Inspection Type: Compliance Evaluation
Flow Measurement - Effluent Yes No NA NE
# Is flow meter used for reporting? M ❑ ❑ ❑
Is flow meter calibrated annually? M ❑ ❑ ❑
Is the flow meter operational? 0 ❑ ❑ ❑
(If units are separated) Does the chart recorder match the flow meter? ❑ ❑ 0 ❑
Comment: Took measurements of the flume:
Width: 2 ft
Ha (location of measurement point, from table): 3 ft 4 In
Actual Doppler Device Location: — 4 ft 3 in
Flow was fairly turbulent at the time of the measurement. Estimated a head of 1.00 feet ->
flow of 5.2 mqd. SCADA showed —5.4 mqd, giving an error of 3.8% for this reading, which is
within the 10% threshold.
Also retained a copy of a note from the calibration company which said that he doubted the
difference in measurement location would equate to a >10% error. It would be interesting to
determine the actual difference in measurement between Ha and the doppler device
location, or to measure again when the flow through the flume was less turbulent
Page# 3