20160742 Ver 1_Comments on Lake Monitoring Plan_20180627

Strickland, Bev
From:
Morris, Eric B
Sent:
Wednesday, June 27, 2018 3:57 PM
To:
Homewood, Sue
Cc:
Karoly, Cyndi
Subject:
FW: Comments on Cedar Cliff Lake Monitoring Plan
Sue,
Please see ISB's comments below regarding Duke's proposed monitoring plan.
Sorry for the delayed response.
If we can be of further assistance here, please feel free to reach out.
Thanks,
Eric Morris
Environmental Program Supervisor II
Intensive Survey Branch, Water Sciences Section
Division of Water Resources, Department of Environmental Quality
[phone] office
eric.morrisa-ncdenr.gov
1621 Mail Service Center
Raleigh, NC 27699-1621
From: Owen, Debra
Sent: Wednesday, June 27, 2018 3:23 PM
To: Morris, Eric B <[e-mail]>
Subject: Comments on Cedar Cliff Lake Monitoring Plan
I have no negative comments regarding the proposed Duke Energy Monitoring Plan for the Auxiliary Spillway
Construction in 2019 to 2020.
Identification of the presence of pyrite in the rock material which may be disturbed has been identified by Duke
Energy. This material is known to oxidize in the presence of the atmosphere to produce an acid bearing rock
with the potential of decreasing water pH.
The proposed monthly monitoring of the lake and construction site for water temperature, dissolved oxygen,
conductivity and pH will be adequate for identifying any potential changes to water quality related to this
potential acidification.
DWR is scheduled to monitor the Little Tennessee River Basin in 2019, and will be available to collect water
quality data at Cedar Cliff Lake, which is one of our historically monitored lakes in that river basin.
Deb
Debra A. Owen
NCDEQ-DWR-WSS-ISB
4401 Reedy Creek Road
1621 Mail Service Center
Raleigh, NC 27699-1621
Phone: [phone]

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