NC0003417_Plan of Action Update_20161114

Richard E. Baker, Jr.
Director
EHS-CCP Environmental Programs
526 S. Church Street
Mail Code: EC13K
Charlotte, NC 28202
[phone]

November 14, 2016

Mr. David May
North Carolina Department of Environmental Quality
Washington Regional Office
943 Washington Square Mall
Washington, NC 27889

Subject: Duke Energy Progress, LLC
HF Lee Energy Complex NPDES Permit NC0003417
Requested Plan – Completion of Assessment
Wayne County

Dear Mr. May:

On October 21, 2016, The Department of Environmental Quality (DEQ) Division of Water
Resources (DWR) requested that Duke Energy provide a Plan of Action (plan) to address
potential releases from the HF Lee Energy Complex (HF Lee) as a result of the historic flooding
caused by Hurricane Matthew.

Duke Energy promptly responded to that request and submitted a plan to DWR Washington
Regional Office on October 27, 2016. The plan submitted on October 27, 2016, provided Duke
Energy’s proposal for addressing the releases from the inactive ash basin complex, and any
potential releases from the cooling pond and triangle pond. In the plan, Duke Energy committed
to providing an update on actions taken to date, a full summary of available data, along with
recommendations for next steps based on available results. Below is an update for each of the
plan items.
1) Estimate on type and amounts of ash or cenospheres released

Duke Energy has continued to evaluate areas in the vicinity of the inactive basin
complex for signs of ash or cenosphere material. No other areas of ash or cenosphere
material have been identified for clean-up by Duke Energy. These assessment efforts
will continue and NC DWR will be notified of any changes in our observations.
2) Assessments of the impoundments that include damage at the inactive basins complex
and loss of material at all impoundments
Duke Energy has continued to inspect the berms of the inactive ash basin complex, the
cooling pond and the triangle pond since the plan was submitted to DWR. We have not
Mr. David May
HF Lee – Completion of Assessment
November, 2016
identified any further damage to the impoundments or identified any loss material at
these impoundments. We will notify DWR of any changes in our observations.
3) A sampling and or monitoring plan
Duke Energy has continued daily sampling at six locations since the plan was submitted
to DWR. Please see the attached tables 1 and 2 for a summary of available data.
Sampling results continue to indicate that arsenic, selenium and mercury are below
water quality standards and there continue to be non-detects for priority pollutants.

We are reviewing your November 9, 2016 letter that included comments regarding the
submitted Sampling and Analysis Plan of Action. We will provide a response to your
comments no later than November 18, 2016. Until that time, we will begin
implementation of the Sampling Plan submitted October 27, 2016 with modifications
noted in your November 9, 2016 letter. We will immediately implement a number of
changes based on comments in your letter as described below:

 Sampling will be conducted on Monday and Thursday of each week
 No additional analyses of Priority Pollutants will be completed
 The sample locations will be changed from the currently used six locations to the four
locations stated in the submitted plan

As stated above, we will provide a revised sampling plan to NC DEQ by November 18,
2016. We will provide updated recommendations on the length of time for sampling at
the four locations as well a process for requesting that sampling be discontinued as
discussed in your November 9, 2016 comments. We will contact your office to review
changes to the plan prior to submission.
4) A description of past, ongoing and proposed actions in response to rereleases.
Cenosphere clean-up has been completed in the area east of inactive basin #2 and
south of inactive basin #3. The repairs of the minor erosion in inactive basin #3 have
been completed.

5) A list of any federal or state permits that may be required to complete the plan

No additional permits were needed to complete cenosphere clean-up.
Mr. David May
HF Lee – Completion of Assessment
November, 2016

6) A timeline for completion of the assessment

Duke Energy has completed clean-up of cenospere material as proposed in the
submitted plan. Based on results seen to date, we do not believe there are any further
actions warranted since the clean-up of the cenosphere material is complete. Duke
Energy will continue to evaluate analytical data as it becomes available. If further action
is warranted, we will notify DWR and complete the necessary actions.

Duke Energy will sample at the four sampling stations along the Neuse River. We will
continue to sample as described in the plan until additional changes are approved by
DWR. Duke Energy will provide a summary of all available data to DWR at periodic
intervals.

If there are any questions regarding this response, Mr. Steve Cahoon via phone at (919) 546-
7457 or via email at [e-mail].

Sincerely,

Richard E. Baker, Jr.
Director Environmental Programs- CCP

Attachments

cc. Steve Cahoon – NC 15
Mike Graham – HF Lee

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1
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U
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A
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D
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D
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N
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Upstream Inactive Ash Pond Inactive Ash Pond
1/
2
7
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2
0
1
5

1
0
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1
2
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2
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1
6

1
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1
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1
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1
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Pa
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m
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t
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NC

2
B

L
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s
Un
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s
Hi
s
t
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5
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In
d
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Me
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2
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2
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Me
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L
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2
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2
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2
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Na
p
h
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L
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5
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5
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Ni
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L
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N
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N
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N
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L
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PC
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(
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PC
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2
1

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PC
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3
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1
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3
2
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5
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PC
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PC
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PC
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PC
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Ph
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5
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Ph
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5
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5
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Py
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L
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2
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2
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2
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To
l
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5
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5
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tr
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s
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tr
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Tr
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c
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0.
0
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5
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/
L
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2
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2
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2
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NC

2
B
Re
d
Ch
r
o
n
i
c

V
a
l
u
e
s
Gr
n
.

A
Ac
t
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o
n

L
e
v
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l
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r
d
n
e
s
s

d
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p
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n
d
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t

m
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t
a
l
.

N
u
m
e
r
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c

s
t
a
n
d
a
r
d

c
l
a
c
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a
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d

a
t

2
5

m
g
/
l
To
t
a
l

R
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c
o
v
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r
a
b
l
e

b
a
s
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d

o
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T
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o
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1
0

m
g
/
L
.
Va
l
u
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i
s

f
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C
r

V
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Ta
b
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1
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E
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2
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Ta
b
l
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1
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Sa
m
p
l
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n
g

E
v
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t
Pa
r
a
m
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r
NC

2
B

L
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Ta
b
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1
:
Sa
m
p
l
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g

E
v
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n
t
Pa
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a
m
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r
NC

2
B

L
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m
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s
Un
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s
An
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y

(
S
b
)
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L
He
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8
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L
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L
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L
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L
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L
Me
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N
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2
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Re
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Ch
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V
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Gr
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Ta
b
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1
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m
p
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g

E
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r
NC

2
B

L
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m
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y

(
S
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2
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1
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m
p
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E
v
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NC

2
B

L
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(
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(
B
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Ta
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1
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Downstream Cooling Pond Up River Inactive Ash Basin Upstream Inactive Ash Pond
11
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Ta
b
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1
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m
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E
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Pa
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m
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NC

2
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L
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S
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NC

2
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Re
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Ch
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V
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Gr
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A
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P
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Downstream Cooling Pond Up River Inactive Ash Basin Upstream Inactive Ash Pond
11
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4
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2
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6

1
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Ta
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1
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E
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NC

2
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m
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NC

2
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L
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2
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Re
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Gr
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A
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P
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A
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P
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d
Inactive Ash Pond Downstream Inactive Ash Pond Cooling Pond
11
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6
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2
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1
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6

1
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1
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1
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1
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Ta
b
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1
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m
p
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g

E
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NC

2
B

L
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S
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a
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11
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Ta
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E
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2
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2
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2
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2
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2
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D
o
w
n
s
t
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e
a
m

In
a
c
t
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e

A
s
h

P
o
n
d
D
o
w
n
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t
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a
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A
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h

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d
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P
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a
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In
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In
a
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A
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h

P
o
n
d
Outfall 002

C
O
O
L
I
N
G

P
O
N
D

C
O
O
L
I
N
G

P
O
N
D
11
/
3
/
2
0
1
6

1
1
/
4
/
2
0
1
6

1
1
/
5
/
2
0
1
6

1
1
/
6
/
2
0
1
6

1
1
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7
/
2
0
1
6

1
1
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8
/
2
0
1
6

1
/
2
7
/
2
0
1
5

1
0
/
1
2
/
2
0
1
6

1
0
/
1
3
/
2
0
1
6
Historic Data
<
1
<
1
<
1
<
1
<
1
<
1
< 1 < 1 < 5
<
1
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1
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1
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1
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1
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1.06 < 1 < 10
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1
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1
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0.217 1.67 1.66
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0.000756 < 0.05 < 5 < 5 12 16 < 0.008 < 10 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 5 < 2 < 2 < 5 < 10 < 10 < 10 < 5 < 10 < 10 < 50 < 50 < 5 < 5 < 5 < 5 < 5 < 10 < 5 < 10 < 5 < 10 < 25 < 0.05 < 0.05 < 0.05 < 10 < 20 < 5
Ta
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2
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2
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L
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6
1
0
0
3
6
0
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
Outfall 002

C
O
O
L
I
N
G

P
O
N
D

C
O
O
L
I
N
G

P
O
N
D
11
/
3
/
2
0
1
6

1
1
/
4
/
2
0
1
6

1
1
/
5
/
2
0
1
6

1
1
/
6
/
2
0
1
6

1
1
/
7
/
2
0
1
6

1
1
/
8
/
2
0
1
6

1
/
2
7
/
2
0
1
5

1
0
/
1
2
/
2
0
1
6

1
0
/
1
3
/
2
0
1
6
Historic Data < 5 < 10 < 50 < 5 < 5 < 5 < 5 < 5 < 50 < 0.05 < 0.05 < 5 < 2 < 2 < 50 < 5 < 5 < 5 < 5 < 5 < 0.05 < 10 < 5 < 5 < 2 < 2 < 2 < 2 < 2 < 2 < 5 < 2 < 2 < 0.5 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 5 < 2 < 2 < 0.05 < 5 < 2 < 2 < 0.05 < 5 < 5 < 5 < 5 < 0.05 < 0.05 < 0.05 < 0.05 < 0.05 < 2 < 2 < 5 < 5 < 0.05 < 0.05 < 0.05 < 5
Ta
b
l
e

2
:
Lo
c
a
t
i
o
n

o
f

S
a
m
p
l
e
Pa
r
a
m
e
t
e
r
NC

2
B

L
i
m
i
t
s
Un
i
t
s
An
t
i
m
o
n
y

(
S
b
)
ug
/
L
He
x
a
c
h
l
o
r
o
b
e
n
z
e
n
e
48
8
ug
/
L
He
x
a
c
h
l
o
r
o
c
y
c
l
o
p
e
n
t
a
d
i
e
n
e
ug
/
L
He
x
a
c
h
l
o
r
o
e
t
h
a
n
e
ug
/
L
In
d
e
n
o
(
1
,
2
,
3
-
c
d
)
p
y
r
e
n
e
0.
0
0
2
8
ug
/
L
Is
o
p
h
o
r
o
n
e
ug
/
L
Me
r
c
u
r
y
ug
/
L
Me
t
h
y
l
e
n
e

C
h
l
o
r
i
d
e
ug
/
L
Na
p
h
t
h
a
l
e
n
e
ug
/
L
Ni
t
r
o
b
e
n
z
e
n
e
ug
/
L
N-
N
i
t
r
o
s
o
d
i
m
e
t
h
y
l
a
m
i
n
e
ug
/
L
N-
N
i
t
r
o
s
o
-
d
i
-
n
-
p
r
o
p
y
l
a
m
i
n
e
ug
/
L
N-
N
i
t
r
o
s
o
d
i
p
h
e
n
y
l
a
m
i
n
e
ug
/
L
PC
B
-
1
0
1
6

(
A
r
o
c
l
o
r

1
0
1
6
)
0.
0
0
0
0
6
4
ug
/
L
PC
B
-
1
2
2
1

(
A
r
o
c
l
o
r

1
2
2
1
)
0.
0
0
0
0
6
4
ug
/
L
PC
B
-
1
2
3
2

(
A
r
o
c
l
o
r

1
2
3
2
)
0.
0
0
0
0
6
4
ug
/
L
PC
B
-
1
2
4
2

(
A
r
o
c
l
o
r

1
2
4
2
)
0.
0
0
0
0
6
4
ug
/
L
PC
B
-
1
2
4
8

(
A
r
o
c
l
o
r

1
2
4
8
)
0.
0
0
0
0
6
4
ug
/
L
PC
B
-
1
2
5
4

(
A
r
o
c
l
o
r

1
2
5
4
)
0.
0
0
0
0
6
4
ug
/
L
PC
B
-
1
2
6
0

(
A
r
o
c
l
o
r

1
2
6
0
)
0.
0
0
0
0
6
4
ug
/
L
Pe
n
t
a
c
h
l
o
r
o
p
h
e
n
o
l
1
ug
/
L
Ph
e
n
a
n
t
h
r
e
n
e
ug
/
L
Ph
e
n
o
l
ug
/
L
Py
r
e
n
e
ug
/
L
Te
t
r
a
c
h
l
o
r
o
e
t
h
e
n
e
ug
/
L
To
l
u
e
n
e
ug
/
L
To
x
a
p
h
e
n
e
ug
/
L
tr
a
n
s
-
1
,
2
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e
ug
/
L
tr
a
n
s
-
1
,
3
-
D
i
c
h
l
o
r
o
p
r
o
p
e
n
e
ug
/
L
Tr
i
c
h
l
o
r
o
e
t
h
e
n
e
ug
/
L
Tr
i
c
h
l
o
r
o
f
l
u
o
r
o
m
e
t
h
a
n
e
ug
/
L
Vi
n
y
l

c
h
l
o
r
i
d
e
0.
0
2
5
ug
/
L
NC

2
B
Re
d
Ch
r
o
n
i
c

V
a
l
u
e
s
Gr
n
.

A
20
1
6
0
3
5
6
4
8

2
0
1
6
0
3
5
8
5
6

2
0
1
6
0
3
5
8
8
6

2
0
1
6
0
3
5
9
0
2

2
0
1
6
0
3
6
0
0
5

2
0
1
6
0
3
6
0
9
6

2
0
1
5
0
0
1
2
3
2

2
0
1
6
0
3
3
0
9
9

2
0
1
6
0
3
3
2
3
6
J1
6
1
1
0
1
3
6

J
1
6
1
1
0
1
9
0

J
1
6
1
1
0
1
9
8

J
1
6
1
1
0
2
0
0

J
1
6
1
1
0
2
2
6

J
1
6
1
1
0
2
5
3

J
1
5
0
1
0
3
1
0

J
1
6
1
0
0
3
3
6

J
1
6
1
0
0
3
6
0
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
D
o
w
n
s
t
r
e
a
m

In
a
c
t
i
v
e

A
s
h

P
o
n
d
Outfall 002

C
O
O
L
I
N
G

P
O
N
D

C
O
O
L
I
N
G

P
O
N
D
11
/
3
/
2
0
1
6

1
1
/
4
/
2
0
1
6

1
1
/
5
/
2
0
1
6

1
1
/
6
/
2
0
1
6

1
1
/
7
/
2
0
1
6

1
1
/
8
/
2
0
1
6

1
/
2
7
/
2
0
1
5

1
0
/
1
2
/
2
0
1
6

1
0
/
1
3
/
2
0
1
6
Historic Data < 5 < 10 < 5 < 5 < 10 < 0.2 < 2 < 2 < 5 < 5 < 5 < 5 < 10 < 0.25 < 0.5 < 0.25 < 0.5 < 0.25 < 0.5 < 0.25 < 0.5 < 0.25 < 0.5 < 0.25 < 0.5 < 0.25 < 0.5 < 10 < 10 < 5 < 10 < 5 < 5 < 2 < 2 < 2 < 2 < 0.5 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2 < 2
Ta
b
l
e

2
:
Lo
c
a
t
i
o
n

o
f

S
a
m
p
l
e
Pa
r
a
m
e
t
e
r
NC

2
B

L
i
m
i
t
s
Un
i
t
s
An
t
i
m
o
n
y

(
S
b
)
ug
/
L
Ar
s
e
n
i
c

(
A
s
)
10
ug
/
L
Be
r
y
l
l
i
u
m

(
B
e
)
6.
5
ug
/
L
Ca
d
m
i
u
m

(
C
d
)

L
o
w

L
e
v
e
l
0.
5
9
ug
/
L
Ch
r
o
m
i
u
m

(
C
r
)
11
ug
/
L
Co
p
p
e
r

(
C
u
)
7.
9
A
ug
/
L
Ir
o
n

(
F
e
)
mg
/
L
Le
a
d

(
P
b
)
2.
9
4
ug
/
L
Ni
c
k
e
l

(
N
i
)
25
ug
/
L
Se
l
e
n
i
u
m

(
S
e
)
5
ug
/
L
Si
l
v
e
r

(
A
g
)

L
o
w

L
e
v
e
l
ug
/
L
Th
a
l
l
i
u
m

(
T
l
)

L
o
w

L
e
v
e
l
ug
/
L
Zi
n
c

(
Z
n
)
12
6
.
7
A
ug
/
L
Me
r
c
u
r
y

(
H
g
)
12
ug
/
L
Oi
l

a
n
d

G
r
e
a
s
e
mg
/
L
TS
S
mg
/
L
Cy
a
n
i
d
e
mg
/
L
Di
o
x
i
n
0.
0
0
0
0
0
5
ng
/
L
1,
1
,
1
-
T
r
i
c
h
l
o
r
o
e
t
h
a
n
e
ug
/
L
1,
1
,
2
,
2
-
T
e
t
r
a
c
h
l
o
r
o
e
t
h
a
n
e
0.
1
7
ug
/
L
1,
1
,
2
-
T
r
i
c
h
l
o
r
o
e
t
h
a
n
e
ug
/
L
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e
ug
/
L
1,
1
-
D
i
c
h
l
o
r
o
e
t
h
e
n
e
ug
/
L
1,
2
,
4
-
T
r
i
c
h
l
o
r
o
b
e
n
z
e
n
e
48
8
ug
/
L
1,
2
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e
48
8
ug
/
L
1,
2
-
D
i
c
h
l
o
r
o
e
t
h
a
n
e
ug
/
L
1,
2
-
D
i
c
h
l
o
r
o
p
r
o
p
a
n
e
ug
/
L
1,
2
-
D
i
p
h
e
n
y
l
h
y
d
r
a
z
i
n
e
ug
/
L
1,
3
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e
ug
/
L
1,
4
-
D
i
c
h
l
o
r
o
b
e
n
z
e
n
e
48
8
ug
/
L
2,
2
'
-
O
x
y
b
i
s
(
1
-
c
h
l
o
r
o
p
r
o
p
a
n
e
)
ug
/
L
2,
4
,
6
-
T
r
i
c
h
l
o
r
o
p
h
e
n
o
l
1
ug
/
L
2,
4
-
D
i
c
h
l
o
r
o
p
h
e
n
o
l
70
ug
/
L
2,
4
-
D
i
m
e
t
h
y
l
p
h
e
n
o
l
ug
/
L
2,
4
-
D
i
n
i
t
r
o
p
h
e
n
o
l
ug
/
L
2,
4
-
D
i
n
i
t
r
o
t
o
l
u
e
n
e
ug
/
L
4-
C
h
l
o
r
o
-
3
-
m
e
t
h
y
l
p
h
e
n
o
l
ug
/
L
2,
6
-
D
i
n
i
t
r
o
t
o
l
u
e
n
e
ug
/
L
2-
C
h
l
o
r
o
e
t
h
y
l
v
i
n
y
l

e
t
h
e
r
ug
/
L
2-
C
h
l
o
r
o
n
a
p
h
t
h
a
l
e
n
e
ug
/
L
2-
C
h
l
o
r
o
p
h
e
n
o
l
1
ug
/
L
2-
N
i
t
r
o
p
h
e
n
o
l
ug
/
L
3&
4
-
M
e
t
h
y
l
p
h
e
n
o
l
(
m
&
p

C
r
e
s
o
l
)
ug
/
L
3,
3
'
-
D
i
c
h
l
o
r
o
b
e
n
z
i
d
i
n
e
ug
/
L
4,
4
'
-
D
D
D
ug
/
L
4,
4
'
-
D
D
E
ug
/
L
4,
4
'
-
D
D
T
0.
0
0
0
2
ug
/
L
4,
6
-
D
i
n
i
t
r
o
-
2
-
m
e
t
h
y
l
p
h
e
n
o
l
ug
/
L
4-
B
r
o
m
o
p
h
e
n
y
l
p
h
e
n
y
l

e
t
h
e
r
ug
/
L
20
1
6
0
3
3
4
5
0

2
0
1
6
0
3
3
4
8
2

2
0
1
6
0
3
3
5
4
1

2
0
1
6
0
3
3
7
1
0

2
0
1
6
0
3
3
8
9
2

2
0
1
6
0
3
4
0
4
0

2
0
1
6
0
3
4
2
0
1

2
0
1
6
0
3
4
2
0
6

2
0
1
6
0
3
4
2
1
2
J1
6
1
0
0
3
9
2

J
1
6
1
0
0
4
0
4

J
1
6
1
0
0
4
4
3

J
1
6
1
0
0
4
7
3

J
1
6
1
0
0
5
1
2

J
1
6
1
0
0
5
4
2

J
1
6
1
0
0
5
6
8

J
1
6
1
0
0
5
7
0

J
1
6
1
0
0
5
7
1
C
o
o
l
i
n
g

P
o
n
d

C
o
o
l
i
n
g

P
o
n
d

C
o
o
l
i
n
g

P
o
n
d

C
o
o
l
i
n
g

P
o
n
d

C
o
o
l
i
n
g

P
o
n
d

C
o
o
l
i
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2
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2
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2
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2
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2
B

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2
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