DEQ-CFW_00061099

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DuPont Fluoroproducts
Ms. Belinda S. Henson
Surface Water Protection Supervisor
NCDENR — Water Quality Programs
225 Green Street — Suite 714
Fayetteville, NC 28301-5095
SUBJECT: Effluent Channel Visual Assessment Report for 2013
DuPont Company — Fayetteville Works
Bladen County, North Carolina
Dear Ms. Henson:
DuPont Fluoroproducts
22828 NC Highway 87 W
Fayetteville, NC 28306-7332
DENR—FRCS
DEC 0 4 2013
December 3, 2013
Per the 2011 Effluent Channel Visual Assessment Protocol that was submitted from the DuPont
Company — Fayetteville Works ("DuPont") to the N.C. Division of Water Quality, attached is the
2013 visual assessment report that describes the condition of the DuPont effluent channel.
The DuPont Outfall 002 effluent flow was removed from this effluent channel in April 2012.
As is consistent with the agreed upon protocol, this report has been generated as a good -faith
effort by DuPont to ensure compliance with all applicable local, state, and federal environmental
regulations, and represents the first two of a series of assessments that aims to understand the
trend of stabilization that is achieved by the construction of the new Outfall 002 system and
subsequent flow redirection away from the effluent channel.
ASSESSMENT DESCRIPTION
The United States Department of Agriculture ("USDA") Stream Visual Assessment Protocol was
followed to perform the reported assessment of the DuPont effluent channel. The USDA
Protocol provides a basic level of stream health evaluation and is based primarily on physical
conditions within the assessment area. The protocol's methodology for assessing the effluent
channel consisted of visual observations and scoring of five (5) conditions, specifically Channel
Condition, Hydrologic Alteration, Vegetation, Bank Stability, and Water Appearance.
E. I. du Pont de Nemours and Company FL-4 Rev. 3/2000
DEQ-CFW 00061099

Ms. Belinda S. Henson
Page 2of2
NCDENR — Water Quality Programs
December 3, 2013
The DuPont effluent channel was assessed at nine (9) locations, which are called "reaches" in the
USDA protocol. The coordinates of the nine reaches and physical markers are used to ensure the
same exact locations are assessed each year. See the attachment titled "Effluent Channel Reach
Locations" for the location of the nine reaches along the channel.
For each specific reach, all five of the above conditions were rated using a scoring range of 1
(worst) to 10 (best). An average score is then calculated as the overall assessment of a reach.
EXECUTIVE SUMMARY
The effluent channel's overall assessment score was 6.9 in 2013, which is rated as "Fair" in the
USDS protocol. By comparison, the effluent channel's overall assessment score was 3.5 in
2011, which is rated as "Poor" in the USDS protocol, and was 6.1 in 2012, which is rated as
"Fair" in the USDS. protocol. From 2012 to 2013 there was a slight improvement in the overall
assessment, with an improvement of all assessed conditions except for Vegetation, which was
unchanged in four of the reaches, had a slight improvement in one of the reaches, had a slight
degradation in three of the reaches, and had a significant degradation at Reach 6. See the
attachment titled "2013 Effluent Channel Visual Assessment Summary".
The 2013 assessment indicates that there is a perpetual flow of water in the channel, and is likely
the discharge of the surficial groundwater into the channel. The flowing water is extremely clear
in appearance and is completely free of any sediment, which is an indication that erosion of the
stream bed and banks are no longer an ongoing concern.
If you should have any questions about this report or if you need additional information, feel free
to call me at [phone].
Michael E. Johnson
Environmental Manager
Attachments
DEQ-CFW 00061100

DuPont Company - Fayetteville Works
2013 Effluent Channel
Visual Assessment Report
DEQ-CFW 00061101

DuPont Company - Fayetteville Works
2013 Effluent Channel Visual Assessment Summary
Channel
Condition
Hydrologic
Alteraltion
Vegetation
Bank
Stability
Water
Appearance
2013
Assessment
2012
Assessment
2012-13
Change
Reach 1
7
9
7
6
n/a
7.25
5.25
2.0
(Reach 2
7
9
7
3
n/a
6.5
5.6
0.9
(Reach 3
4
8
6
3
9
6
5.6
0.4
(Reach 4
5
7
5
4
9
6
5.2
0.8
(Reach 5
7
8
7
7
9
7.6
5.4
2.2
[Reach 6
4
8
2
i 2
9
5
5.2
-0.2
[Reach 7
8
9
7
8
9
8.2
8.4
-0.2
Reach 8
7
9
6
( 6
9
7.4
7
0.4
Reach 9
8
8
8
n/a
9
8.25
7
1.3
Overall Stream Average
6.9
6.1 -T
0.8
Cape Fear River
48.58 ft crest Indicates improvement from 2012 to 2013
on 6/11/2013 Indicates similar conditions from 2012 to 2013
Indicates degradation from 2012 to 2013
j N/A

DuPont Company - Fayetteville Works
Effluent Channel Reach Locations

Visual Assessment Protocol
Reach 1
Owners name DuPont Evaluator's name: Don McCamish/Mike Johnson_Date_9/18/2013
Stream name _Unknown Tributary Waterbody ID number
R...h In nfinn
N 34 deg 50.299' W 078 deg 50.129'
Ecoregion _Middle Atlantic Coastal Forest_ Drainage area Cape Fear River Grad
Applicable reference site _N/,
Land use within drainage (%): row crop _
confined animal feeding operations
hayland grazing/pasture _50%_ forest _50% residential
Cons. Reserve industrial Other:
Weather conditions -today _Sunny
Active channel width : Approx. 30ft_ Dominant substrate: boulder
Past 2-5 days
_ gravel sand_ X_ silt mud
DEQ-CFW 00061104

Reach Assessment Scores
Channel condition M
Hydrologic alteration
Vegetation ❑7
Bank stability
Water appearance N/A
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 — 7.4 Fair
7.25 7.5 — 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend:_ Reach 1 shows improvement vs. 2012 in overall vegetation and bank stability. No
signs of hydrologic alternation in the 2013 survey. Other measures remain approximately equal.
Recommendations (Applies to Negative Stabilization Trends Only)
DEQ-CFW 00061105

Reach 1, Picture 1
DEQ-CFW 00061106

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Reach 1, Picture 3
DEQ-CFW 00061108

Visual Assessment Protocol
Reach 2
Owners name DuPont Evaluator's name: Don MCCamish/Mike Johnson Date 9/18/2013
Stream name _Unknown Tributary Waterbody ID number
Reach location
N 34 deg 50.198' W 078 deg 50.066'
Ecoregion _Middlle Atlantic Coastal Forest_ Drainage area Cape Fear River Gradient
Applicable reference site _N/A
Land use within drainage (%): row crop hayland grazing/pasture forest _100%_ residential
confined animal feeding operations Cons. Reserve industrial Other:
Weather conditions -today _Sunny Past 2-5 days
Active channel width : Approx. 80ft_ Dominant substrate: boulder gravel sand _X_ silt mud
Lo o1 le I)
DEQ-CFW 00061109

Reach Assessment Scores
Channel condition F7�
Hydrologic alteration 191
Vegetation F
Bank stability F
Water appearance tv/a
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 — 7.4 Fair
6.5 7.5 — 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend: Reach 2 shows improvement vs. 2012 in overall vegetation and bank stability.
No signs of hydrologic alternation in the 2013 survey. Other measures remain approximately equal. No water is
visible from the survey location
Recommendations (Applies to Negative Stabilization Trends Only)
DEQ-CFW 00061110

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DEQ-CFW 00061111

Reach 2, Picture 5
DEQ-CFW-00061112

Visual Assessment Protocol
Reach 3
Owners name DuPont Evaluator's name: Don MCCamish/Mike Johnson Date 9/18/2013
Stream name _Unknown Tributary Waterbody ID number
Reach location
_N 34 deg 50.123' W 078 deg 49.975'
Ecoregion _Middlle Atlantic Coastal Forest_ Drainage area Cape Fear River Gradient
Applicable reference site _N/A
Land use within drainage (%): row crop hayland grazing/pasture forest _100%_ residential
confined animal feeding operations Cons. Reserve industrial Other:
Weather conditions -today _Sunny Past 2-5 days
Active channel width : Approx. 300ft_ Dominant substrate: boulder gravel sand silt mud
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DEQ-CFW 00061113

Reach Assessment Scores
Channel condition 4]
Hydrologic alteration F8 ]
Vegetation 6❑
Bank stability F
Water appearance F9 I
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 - 7.4 Fair
6.0 7.5 - 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend: _The Reach 3 survey shows improvement in bank stability and water condition
vs. the 2012 survey, with no signs of hydrologic alteration. Vegetation shows a slight decline vs. the 2012
survey, likely due to a combination of high rainfall in the summer of 2013 and continued sloughing of banks as
the channel continues to stabilize.
Recommendations (Applies to Negative Stabilization Trends Only)
DEQ-CFW 00061114

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Reach 3, picture 7
DEQ-CFW 00061116

Visual Assessment Protocol
Reach 4
Owners name DuPont Evaluator's name: Don McCamish/Mike Johnson Date 9/18/2013
Stream name _Unknown Tributary Waterbody ID number
Reach location
_N34 deg 50.057' W78 deg 49.911'
Ecoregion _Middlle Atlantic Coastal Forest_ Drainage area Cape Fear River
Applicable reference site _N/A
Land use within drainage (%): row crop hayland grazing/pasture
confined animal feeding operations Cons. Reserve _
Weather conditions -today _Sunny
Active channel width : Approx. 50ft_ Dominant substrate: boulder
forest 100% residential
industrial _ Other:
Past 2-5 days
_ gravel sand silt mud
DEQ-CFW 00061117

Reach Assessment Scores
Channel condition
Hydrologic alteration F7
Vegetation F
Sank stability F4�
Water appearance F9 I
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 — 7.4 Fair
6.0 7.5 — 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend: Reach 4 shows improvement in channel condition and bank stability vs the 2012
assessment. Other measures, including vegetation remain in similar condition, with excellent water quality.
Recommendations (Applies to Negative Stabilization Trends Only)
DEQ-CFW 00061118

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Reach 4,Pmlur 8
DEQ CFW-0 0061119

Reach 4, Picture
DEQ-CFW 00061120

Reach 4, Picture 10
DEQ-CFW 00061121

Visual Assessment Protocol
Reach 5
Owners name DuPont Evaluator's name: Don McCamish/Mike Johnson_Date_9/18/2013
Stream name _Unknown Tributary Waterbody ID number
Reach location
_N34 deg 49.983' w078 deg 49.789'
Ecoregion _Middlle Atlantic Coastal Forest_ Drainage area Cape Fear River Gradient
Applicable reference site _N/A
Land use within drainage (%): row crop hayland grazing/pasture forest _100%_ residential
confined animal feeding operations Cons. Reserve industrial Other:
Weather conditions -today _Sunny Past 2-5 days
Active channel width : Approx. 55ft Dominant substrate: boulder gravel sand silt mud
r
DEQ-CFW 00061122

Reach Assessment Scores
Channel condition r
Hydrologic alteration F-8 I
Vegetation 7
Bank stability F
Water appearance F9 I
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 — 7.4 Fair
7,6 7.5 — 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend: Reach 5 shows improvement in all measures vs the 2012 assessment. Water quality
remains excellent.
Recommendations (Applies to Negative Stabilization Trends Only)
DEQ-CFW 00061123

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Visual Assessment Protocol
Reach 6
Owners name DuPont Evaluator's name: Don MCCamish/Mike Johnson Date 9/20/2013
Stream name _Unknown Tributary Waterbody ID number
Reach location
_N34 deg 50.016' W078 deg 49.688'
Ecoregion _Middlle Atlantic Coastal Forest_ Drainage area Cape Fear River Gradient
Applicable reference site _N/A
Land use within drainage (%): row crop hayland grazing/pasture
confined animal feeding operations Cons. Reserve industrial
Weather conditions -today _overcast Past 2-5 days
Active channel width : Approx. 60ft_ Dominant substrate: boulder gravel
E
F
forest 50% residential
—Other: _50%_utility roadway
sand _X _ silt mud
DEQ-CFW 00061127

Reach Assessment Scores
Channel condition F
Hydrologic alteration F
Vegetation F21
Bank stability F
Water appearance F9 I
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 — 7.4 Fair
5.0 7.5 — 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend: Reach 6 shows slight improvement in bank stability with no signs of hydrologic
alteration. Water appearance remains excellent. Vegetation shows signs of decline, possibly due to high
rains in the summer of 2013 and possibly flooding from the cape fear river up to this reach. Run off from the
adjacent utility roadway may be a factor in improvement of this reach location.
Recommendations (Applies to Negative Stabilization Trends Only): Continue to monitor vegetation and bank stability.
Run off from the adjacent utility roadway may be a factor in improvement of this reach location.
DEQ-CFW 00061128

Reach 6, Picture 14
DEQ-CFW 00061129

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DEQ-CFW 00061130

Visual Assessment Protocol
Reach 7
Owners name DuPont Evaluator's name: Don McCamish/Mike Johnson_Date_9/20/2013
Stream name _Unknown Tributary Waterbody ID number
Reach location
_N34 deg 49.988' W078 deg 49.526'
Ecoregion _Middlle Atlantic Coastal Forest_ Drainage area Cape Fear River Gradient
Applicable reference site _N/A
Land use within drainage (%): row crop hayland grazing/pasture _40% forest _60%_ residential
confined animal feeding operations Cons. Reserve industrial Other:
Weather conditions -today _Overcast Past 2-5 days _
Active channel width : Approx. 30ft_ Dominant substrate: boulder gravel sand _X_ silt mud _
DEQ-CFW 00061132

Reach Assessment Scores
Channel condition F
Hydrologic alteration F-9 I
Vegetation F7�
Bank stability F8 ]
Water appearance F9 I
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 — 7.4 Fair
8.2 7.5 — 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend: Reach 7 remains similar in channel condition, bank stability with no signs of
hydrologic alteration. Water appearance remains excellent. Vegetation remains similar with minor indications of
some vegetation die off in the channel flood areas, possibly due to high rains in the summer of 2013 and possibly
flooding from the Cape Fear river up to this location. Given the location of this reach, adjacent to lock and dam
road in dense, low lying woodlands, significant increases in vegetation are un-likely.
Recommendations (Applies to Negative Stabilization Trends Only)
DEQ-CFW 00061133

Reach 7, Picture 17
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DEQ-CFW 00061134

Visual Assessment Protocol
Reach 8
Owners name DuPont Evaluator's name: Don McCarnish/Mike Johnson_Date_9/20/2013
Stream name _Unknown Tributary Waterbody ID number
Reach location
_N34 deg 49.932' W78 deg 49.430'
Ecoregion _Middlle Atlantic Coastal Forest_ Drainage area Cape Fear River Gradient
Applicable reference site _N/A
Land use within drainage (%): row crop hayland grazing/pasture forest _100%_ residential
confined animal feeding operations Cons. Reserve industrial Other:
Weather conditions -today _Overcast Past 2-5 days
Active channel width : Approx. 25ft_ Dominant substrate: boulder gravel sand silt mud
DEQ-CFW 00061136

Reach Assessment Scores
Channel condition F
Hydrologic alteration 191
Vegetation F6]
Bank stability
Water appearance F91
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 — 7.4 Fair
7.4 7.5 — 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend_ Reach 8 shows improvement in channel condition. No indications of hydrologic
alteration. Bank stability remains similar with excellent water appearance. Vegetation indicates a slight decline,
possibly due to flooding from the Cape Fear river. Hard clay layers on the bank may also hinder the future
vegetation.
Recommendations (Applies to Negative Stabilization Trends Only)
DEQ-CFW 00061137

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Reach 8, Picture 21
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DEQ-CFW 00061140

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Visual Assessment Protocol
Reach 9
Owners name DuPont Evaluator's name: Don McCamish/Mike Johnson Date 9/20/2013
Stream name _Unknown Tributary Waterbody ID number
Reach location
_N34 deg 49.900' W078 deg 49.379,
Ecoregion _Middile Atlantic Coastal Forest_ Drainage area Cape Fear River Gradient
Applicable reference site _N/A
Land use within drainage (%): row crop hayland grazing/pasture forest _40%_ residential
confined animal feeding operations Cons. Reserve industrial Other: 60% River entry
Weather conditions -today _Overcast Past 2-5 days
Active channel width : Approx. 60ft_ Dominant substrate: boulder gravel sand _X_ silt mud
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DEQ-CFW 00061141

Reach Assessment Scores
Channel condition F8]
Hydrologic alteration F
Vegetation M
Bank stability I N/A
Water appearance F9 I
Overall score < 6.0 Poor
(Total divided by number scored) 6.1 — 7.4 Fair
8.25 7.5 — 8.9 Good
> 9.0 Excellent
Visual Assessment Score Trend —Reach 9 shows improvement in channel condition. Vegetation remains similar. No
indications of hydrologic alteration, with excellent water appearance. Bank stability is not applicable for this low
lying river entry.
Recommendations (Applies to Negative Stabilization Trends Only)
DEQ-CFW 00061142

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Reach 9, Picture 23
DEQ-CFW 00061144

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