NC0023973_More Information Received_20190304

James R.Flechtner,PE
Executive Director
IM Cape Fear 235 Government Center Drive
Wilmington,NC 28403
Public Utility Authority 910-332-6625
[e-mail]
Stewardship.Sustainability.Service.
February 26, 2019 nPNVINANR
RECEtJED/1' -
NC DEQ Division of Water Resources ���� Q. 2019
Attn: Linda Culpepper, Interim Director
1617 Mail Service Center ,V1
;;;riiaiig �;�cl0n
Raleigh, NC 27699-1617
SUBJECT: NPDES Permit NC0023973
McKean Maffitt (Southside) WWTP
Section A. (9) Schedule of Compliance
Dear Ms. Culpepper:
Schedule of Compliance of the above referenced NPDES Permit requires submittal within one
year of the effective date a Corrective Action Plan for achieving compliance with the newly
issued copper permit limits. As staff has continued to analyze samples over this last year,there
has been some variation in the data. The variation is not significant but varies enough that
would result in the facility being in a non-compliant status for portions of the year. Staff has
identified a need to increase the monitoring at the wastewater treatment plant as well as add
monitoring within the collection system.
This next year will enable staff to gain a better understanding of the correlation between the
various outfalls and any fluctuations in copper concentrations. Below is a proposed Corrective
Action Plan that should allow enough time and data to develop a path forward to consistently
achieve compliance:
• Increase effluent monitoring for copper to bi-monthly for 12 months beginning
March 2019.
• Perform bi-monthly monitoring for copper on the various influent outfalls for 12
months beginning March 2019.
• Review the data from outfall monitoring,the most recent Industrial Waste Survey,
and other customer data for potential dischargers of copper and investigate further
where appropriate by September 2020.
• Determine the next course of action based on results of the data and investigations
of dischargers no later than January 2021.
Staff anticipates these action items will give us the information required to identify sources of
copper and develop plans to address the concentrations at the plant. This timeline should also

provide time to implement any next steps that may be identified. If you have any further
concerns, please feel free to contact me at 910-332-6542 or Beth Eckert at 910-332-6646.
Sincerely, ,
‘ -4i9-(1(4/.
Ja s, R. Flechtner, P.E.
Executive Director
Cape Fear Public Utility Authority
cc: Gary Perlmutter, NCDEQ
....Julie Gryb, NCDEQ
Frank Styers, Cape Fear Public Utility Authority
Beth Eckert, Cape Fear Public Utility Authority
Milton Vann, Cape Fear Public Utility Authority