NC0057533_Outfall Design and Dilution Modeling_20190215

Concept Outfall Design and Dilution
Modeling for the Northwest Water
Treatment Plant's Concentrate Dischar
Revised February 14, 2019
Prepared for:
Brunswick County
Utilities
Smith

Table of Contents
Section1 Introduction..................................................................................................... 1-1
1.1 Project Background.................................................................................................................................................1-1
1.2 Project Approach......................................................................................................................................................1-2
Section 2 Governing Regulations......................................................................................
2-1
2.1 Introduction................................................................................................................................................................
2-1
2.2 North Carolina Surface Water and Wetland Standards............................................................................
2-1
2.3 North Carolina Primary Nursery Area Rules................................................................................................
2-2
2.4 Mixing Zones in North Carolina..........................................................................................................................
2-2
2.5 Whole Effluent Toxicity Document...................................................................................................................
2-3
2.6 North Carolina Water Treatment Plant Strategy........................................................................................
2-3
2.7 EPA Acute Mixing Zone Requirements............................................................................................................
2-3
Section 3 Characterizing the Concentrate.........................................................................
3-1
3.1 Introduction................................................................................................................................................................
3-1
3.2 Concentrate Flow......................................................................................................................................................
3-1
3.3 Concentrate Quality.................................................................................................................................................
3-2
3.3.1 Comparison of Chemical Quality Data to Water Quality Standards ......................................
3-3
3.3.2 Whole Effluent Toxicity Testing.........................................................................................................3-12
85% Concentrate WET Results............................................................................................................3-12
92% Concentrate WET Results............................................................................................................3-12
3.4 Needed Dilution........................................................................................................................................................3-13
Section 4 Characterizing the Cape Fear River at the Proposed Discharge Location .............
4-1
4.1 Introduction................................................................................................................................................................
4-1
4.2 River Flow....................................................................................................................................................................
4-2
4.3 Bathymetry..................................................................................................................................................................4-2
4.3.1 Previous Studies..........................................................................................................................................4-2
4.3.2 Hydrographic Survey.................................................................................................................................4-3
4.3.3 River Channel Characterization............................................................................................................4-4
4.4 River Tidal Conditions............................................................................................................................................4-4
4.4.1 Field Data Collection..................................................................................................................................
4-4
4.4.2 Velocity Characterization..............................................................................................................4-4
ReversingTidal Velocities........................................................................................................................
4-5
Unidirectional River Velocities..............................................................................................................
4-7
4.4.3 Water Quality Characterization................................................................................................
4-8
Section 5 Concept Design for Discharge............................................................................
5-1
5.1 Introduction................................................................................................................................................................
5-1
5.2 Design Considerations............................................................................................................................................
5-1
5.3 Recommended Concept Design..........................................................................................................................
5-2
5.4 Hydraulics....................................................................................................................................................................
5-2
Section 6 Assessment of North Carolina Primary Nursery Area Rules ................................ 6-1
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Table of Contents
Section 7 CORMIX Modeling to Assess Compliance with Regulations ................................ 7-1
7.1 Introduction................................................................................................................................................................7-1
7.2 CORMIXI Inputs........................................................................................................................................................7-1
7.2.1 River Geometry............................................................................................................................................7-1
7.2.2 Tidal Conditions: Depth and Velocity Scenarios............................................................................7-1
7.2.3 Concentrate Characteristics....................................................................................................................7-2
7.2.4 Outfall Configuration................................................................................................................................. 7-3
7.3 Description of Scenarios........................................................................................................................................ 7-3
7.4 Results of Initial Dilution Analysis.....................................................................................................................7-3
7.4.1 Steady Flow Scenario Results................................................................................................................ 7-4
7.4.2 Tidal Flow Scenario Results....................................................................................................................7-4
7.5 Summary.......................................................................................................................................................................7-6
Section8 Summary......................................................................................................... 8-1
Appendices
Appendix A Concentrate Water Quality
Appendix B Field Data Report
Appendix C Concept Design of Variable Orifice
Appendix D CORMIX Prediction Files
Appendix E Responses to NC DEQ Comments on November 2018 Draft
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Table of Contents
List of Figures
Figure 1-1
Orientation of the Proposed Discharge Location Relative to the Cape Fear River
the Northwest WTP and Lock and Dam#1........................................................................................1-1
Figure 4-1
Target Discharge Area on the Cape Fear River................................................................................
4-1
Figure 4-2
CDF of the Daily Flows at Lock and Dam #1 on the Cape Fear River ......................................
4-2
Figure 4-3
Bathymetric Data Collected near Proposed Discharge Location ..............................................
4-3
Figure 4-4
Depth -averaged Velocity Data Plotted with River Discharge at Lock and Dam #1..........
4-5
Figure 4-5
Daily Observed Minimum Velocity Plotted against Daily Discharge at Lock
andDam#1.....................................................................................................................................................
4-5
Figure 4-6
River Flows at Lock and Dam #1 for 2010-2017............................................................................
4-6
Figure 4-7
Velocity and Water Level Characterization used for Dilution Modeling ...............................
4-7
Figure 4-8.
Sample Profile Data Collected, from Transect location 2, on July 25, 2018........................
4-8
Figure 5-1
Concept Design Concentrate Outfall for Brunswick County's Northwest WTP .................
5-3
Figure 7-1
Flux -average Dilution with Distance from the Port during Peak Ebb ....................................
7-5
Figure 7-2 Flux -average Dilution with Distance from the Port at 30 minutes after Low Slack Tide7-6
List of Tables
Table 3-1. Possible Concentrate Flows for Initial Design and Buildout Capacity Conditions and
Variable Membrane Efficiency................................................................................................................3-2
Table 3-2
Comparison of Concentrate Laboratory Analytical Results against North Carolina
WaterQuality Criteria.................................................................................................................................
3-5
Table 3-3
Comparison of Concentrate Laboratory Analytical Results against North Carolina
ProtectiveValues...........................................................................................................................................
3-7
Table 3-4
Comparison of Metals and Conventional Parameters against Water Quality Criteria..3-10
Table 3-5
2018 Chronic Whole Effluent Toxicity Test Results for Ceriodaphnia dubia run with
Concentrate with Reduced Levels of Chlorine Dioxide as a Preoxidant..............................3-12
Table 3-6
Acute and Chronic Whole Effluent Toxicity Test Results for Ceriodaphnia dubia with
92% Dechlorinated Concentrate using Free Chlorine as a Preoxidant................................3-13
Table 3-7
Required Dilution to Meet Water Quality Criteria........................................................................3-15
Table 4-1
River Flow Characteristics used for Dilution Modeling................................................................
4-6
Table 7-1
Ambient Water Characteristics for CORMIX Simulations............................................................
7-1
Table 7-2
Summary of CORMIX Ambient Inputs..................................................................................................
7-2
Table 7-3
Summary of CORMIX Discharge Inputs...............................................................................................
7-2
Table 7-4
Summary of CORMIX Outfall and River Dimension Inputs.........................................................
7-3
Table 7-5
Summary of CORMIX Results for Steady Flow Scenarios with a Strong Unidirectional
Current...............................................................................................................................................................
7-4
Table 7-6
Summary of CORMIX Results for Low Flow Scenarios.................................................................
7-5
Table 7-7
Summary of CORMIX Results for High Flow Scenarios.................................................................
7-5
CDM
Smith ���

Section 1
Introduction
This report documents the concept design and dilution evaluation of the discharge of a
concentrate associated with a proposed membrane treatment facility at Brunswick County's
Northwest water treatment plant (WTP) into the Cape Fear River in support of an NPDES permit
application for the facility.
1.1 Project Background
Brunswick County is developing a modification for its Northwest WTP to both expand capacity
and add membrane treatment to remove Gen X and other PFC contaminants found in its raw
water supply: the intake at Lock and Dam #1 on the Cape Fear River (Figure 1-1). The membrane
process generates a concentrate, and Brunswick County seeks to discharge the concentrate back
to the Cape Fear River at a location about 18.3 miles downstream of Lock and Dam #1.
Figure 1-1. Orientation of the Proposed Discharge Location Relative to the Cape Fear River, the
Northwest WTP and Lock and Dam #1
Starting in the spring 2018, a pilot membrane treatment plant has been operated at the
Northwest WTP to allow for optimization of the process design and provide typical concentrate
for chemical and whole effluent toxicity (WET) testing. The pilot plant concentrate data are the
basis for determining the necessary dilution for this discharge.
Smith 1-1

Section 1 • Introduction
At the proposed location for discharge, the Cape Fear River is tidal with reversing currents only
occurring at low to moderate river flows. A month -long monitoring program (Section 4.4) was
conducted at the proposed discharge site to determine bathymetry, water levels, ambient
currents, and other physical parameters. Available information and the site -specific monitoring
data indicate that salinity is not present at the site (Section 4.4.3 and Appendix B describe the
data). Thus, the proposed discharge is a freshwater concentrate being released into freshwater.
1.2 Project Approach
The general approach used for the discharge concept design and initial dilution modeling is:
■ Identify regulatory requirements the project must meet that affect the design and modeling
of the proposed concentrate discharge (Section 2).
■ Analyze the available data on the concentrate for both chemical and WET testing and
develop target dilution values to meet regulatory requirements. Characterize the
concentrate (flow, temperature, density) (Section 3).
■ Review and analyze available data to support analyses of ambient conditions in the Cape
Fear River (flow, tide, current, temperature, salinity (if present), pH and ambient
background concentrations) (Section 4).
■ Develop a concept design for the discharge to the Cape Fear River that optimizes initial
dilution and the available head for discharge (Section 5). Provide a preliminary hydraulic
profile for the outfall system.
■ Section 6 provides analysis for the requirements for non-toxics for discharges to Primary
Nursery Areas that are designated high quality waters; analysis of the toxics requirements
are included in Section 7.
■ Define an approach to determine the dilution of concentrate using CORMIX, establishing
input parameters for modeling, and performing initial dilution simulations to predict
concentrations at the edge of the mixing zone (Section 7).
■ CORMIX (version 10.OGT) is a U.S. Environmental Protection Agency (EPA) approved
software system used for the analysis, prediction, and design of discharges into diverse
water bodies, to demonstrate compliance of the proposed discharge with these regulations
using best available hydrodynamic model results for unsteady tidal conditions. Section 6
provides a description of the CORMIX scenarios developed and evaluated to demonstrate
compliance with these regulations. Documentation of the CORMIX modeling inputs and
assumptions is provided (Section 7).
■ Present the predictions for edge of mixing zone concentrations for the proposed discharge
concept design (Section 7).
In November 2018, a draft version of this report was submitted to North Carolina regulators for
review. Comments were received on December 17, 2018; responses to the comments are
included as Appendix E.
1-2 Smith

Section 2
Governing Regulations
2.1 Introduction
North Carolina requirements governing the discharge of concentrate from the Northwest WTP
are:
■ North Carolina surface water and wetland standards (15A NCAC 0213)
■ North Carolina primary nursery area rules (15A NCAC 03R .0103)
■ Mixing Zones in North Carolina (dated July 23, 1999)
■ Whole Effluent Toxicity Permit Limits and Monitoring Requirements (Memorandum from
C. Sullins dated August 2, 1999)
■ NPDES Permitting Strategies for Potable Water Treatment Plants (October 2009) and
Changes to Water Treatment Plant Strategy (Memorandum from J. Poupart dated October
14, 2009)
Sections of these documents relevant to the proposed discharge of concentrate from the
Northwest WTP to the Cape Fear River are summarized below.
2.2 North Carolina Surface Water and Wetland Standards
The proposed discharge of concentrate is to the Cape Fear River about 18.3 miles downstream of
Lock and Dam #1. At this location, the river is Class C, a freshwater protected for secondary
recreation, fishing, aquatic life including propagation and survival and wildlife.
The sections of North Carolina Water Quality Standards (15 NCAC 02B) that are most relevant to
this project are:
■ Mixing Zones (15 NCAC 0213.2015) -Allows mixing zones to be established on a case -by -
case basis "after consideration of the magnitude and character of the waste discharge and
the size and character of the receiving waters" to provide a reasonable opportunity for a
discharge to mix with a receiving water provided that discharges will not:
■ Result in acute toxicity to aquatic life or prevent free passage of aquatic organisms
■ Result in offensive conditions
■ Produce undesirable aquatic life or result in the dominance of nuisance species
■ Endanger the public health or welfare.
■ Water quality standards do not apply within regions of mixing zones.
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Section 2 • Governing Regulations
Aquatic Life Standards (15 NCAC 213.0208) - The concentration of toxic substances shall
not result in chronic toxicity, determined as levels in excess of the chronic value (which is
the geometric mean of the no observable effects concentration (NOEC) and the lowest
observable effects concentration (LOEC).
■ Fresh Surface Water Quality Standards for Class C Waters (15 NCAC 213.0211) --
2.3 North Carolina Primary Nursery Area Rules
North Carolina's Division of Marine Fisheries designates the main stem of the Cape Fear River
from Lock and Dam No. 1 into the estuary as a primary nursery area (15A NCAC 03R .0103). The
surface water quality standards (15A NCAC 02B.0101(e)(5)) define waters that are primary
nursery areas as a High Quality Waters (HQW). The surface water quality standards (15A NCAC
0213.0224) define additional provisions for all new discharges of wastewater to HQWs in addition
to those described above; applicable provisions to this discharge include:
■ Oxygen Consuming Wastes -Effluent limits of BODs = 5 mg/L; NH3-N = 2 mg/L; DO = 6
mg/L
■ Total Suspended Solids - Effluent limit <20 mg/L for non -trout waters
■ Volume - Total volume of all wastewater discharges combined < 50% of 7Q10 stream flow
■ Toxic Substances - Where complex wastes may be present in a discharge, a safety factor
shall be applied to any chemical or whole effluent toxicity allocation.
■ The limit for a specific chemical constituent shall be allocated at one-half of the normal
standard at design conditions.
■ WET shall be allocated to protect for chronic toxicity at an effluent concentration equal to
twice that which is acceptable under design conditions.
■ In all instances there may be no acute toxicity in an effluent concentration of 90 percent.
■ Ammonia toxicity should be evaluated using EPA's 1984 Ambient Water Quality Criteria for
Ammonia.
2.4 Mixing Zones in North Carolina
North Carolina has a mixing zone document that outlines standard permitting procedures and
analytical approaches for defining mixing zones for toxicants, which are established on a case by
case basis. The document states that in practice, NC regulators consider the type of receiving
water, outfall configuration, effluent characteristics, extent of mixing/dilution, and specific
aquatic resource concerns.
Dimensions of an acute mixing zones would be established using the procedures in EPA's
Technical Support Document for Water Quality -based Toxics Control (1991). Mixing of the
discharge with the receiving water is conventionally analyzed using the initial dilution model
CORMIX at critical conditions for the receiving water. These are not specified for estuaries, such
2-2 Smith

Section 2 • Governing Regulations
as the Cape Fear River, but should include consideration of the receiving water cross section at
the discharge location, water level, wind, lunar tides, and other factors and the discharge flow
(typically maximum permitted flow but consider others if they could result in reduced mixing).
2.5 Whole Effluent Toxicity Document
North Carolina's Whole Effluent Toxicity Permit Limits and Monitoring Requirements document
states that in a tidally influence receiving water a discharge's permit will include a requirement to
pass chronic toxicity testing using Ceriodaphnia dubia if the ratio of the wastewater flow to
receiving water + wastewater flow is less than 400:1 (i.e., the post -mixing instream waste
concentration is greater than 0.25 percent discharge) using an estimate of the 7Q10 flow for the
receiving water flow. If dilution is greater than 400:1 then only a 24-hour acute toxicity test
would be included in a NPDES permit.
2.6 North Carolina Water Treatment Plant Strategy
North Carolina's Water Treatment Plant Strategy describes permit requirements for various
types of water treatment plants and WET testing monitoring requirements, the latter of which are
consistent with the Whole Effluent Toxicity Document (Section 2.4). For the Northwest WTP
plant's proposed concentrate discharge the expected dilution will be less than 400:1, WET testing
will be a chronic test using Ceriodaphnia dubia at the chronic mixing zone characteristics.
2.7 EPA Acute Mixing Zone Requirements
EPA's Technical Support Document for Water Quality -based Toxics Control (TSD) states that the
acute effects (lethality to passing organisms) can be prevented in a mixing zone in one of four
ways.
1. Prohibit concentrations in excess of the criterion maximum concentration (CMC) in the
pipe itself, as measured directly at the end of the pipe (for this project, concentrations
measured in the concentrate are compared to North Carolina acute water quality
standards).
Meet the CMC within a very short distance from the outfall during chronic design flow
conditions for the receiving water. EPA notes that the use of a high -velocity discharge
with an initial velocity of 3 m/s, or more, together with a mixing zone spatial limitation of
50 times the discharge length scale (which is the square root of the cross -sectional area of
the discharge) should ensure the CMC is met within a few minutes under practically all
conditions.
3. When a high velocity discharge is not used, provide data to show the CMC is met at the
most restrictive of the following conditions.
o 10 percent of the distance from the edge of the outfall structure to the edge of the
regulatory (chronic) mixing zone in any spatial direction;
o A distance of 50 times the discharge length scale (as defined in Section 3.3) in any
spatial direction;
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Section 2 • Governing Regulations
o A distance of five times the local water depth in any horizontal direction from any
discharge outlet.
4. Provide data to show that a drifting organism would not be exposed to 1-hour average
concentrations exceeding the CMC.
The TO provides critical design period for an estuary without stratification as including a
combination of low-water slack at spring tide for the estuary and design low flow for riverine
inflow. North Carolina's Surface Water and Wetland Standards uses the 7Q10 flow for design low
flow river conditions. The TO also calls for analyses to be conducted as off -design conditions
(e.g., a maximum velocity during a tidal cycle) to check mixing zone dimensions with the greater
dilution that is expected at higher ambient velocity.
2-4 Smith

Section 3
Characterizing the Concentrate
3.1 Introduction
A membrane pilot treatment plant was established at the Northwest WTP to explore process
design parameters and generate concentrate for testing. Testing was conducted at two
conditions:
■ February to late October 2018 - Pilot plant operating at 85% efficiency
■ Late October 2018 to January 2019 - Pilot plant operating at 92% efficiency
The Northwest WTP currently uses chlorine dioxide as a preoxidant. During the early pilot
testing, chlorine dioxide was a suspected toxicant in early chronic WET tests conducted on the
concentrate, and the doses were reduced to reduce toxicity in the concentrate; thus, chemistry
and WET test results used in this report (and prior to late October) were collected starting with a
feedwater to the membrane system that had a reduced chlorine dioxide dose. During the latter
testing period, the plant was switched to free chlorine as a preoxidant so that samples collected
for chemistry and WET testing were derived from a feed water to the membranes dosed with free
chlorine.
The process design parameters are used to establish expected efficiency of the treatment process,
and thus, concentrate flow. Chemical and whole effluent toxicity testing on the concentrate are
used to determine the necessary dilution to meet North Carolina water quality standards and
other guidance governing the discharge (Section 2).
3.2 Concentrate Flow
Operations of the reverse osmosis pilot plant began in February 2018, and it has operated
through early 2019 to verify membrane performance, establish the efficiency of the proposed
membrane process, and establish the expected water quality of the concentrate.
Initially, the pilot plant was operated at 85% efficiency, where efficiency of the membrane
process refers to the percentage of feed water to the membrane that becomes permeate. The
reject water (concentrate) volume increases as the efficiency of the process decreases. Based on
the results of the initial piloting, the membrane process was believed to be able to operate at up
to 92% recovery of the membrane feed water as permeate. This was verified in late October 2018
to January 2019, when the pilot plant was operated at 92% efficiency.
The mixing zone assessment for the Brunswick outfall requires the typical range of operational
flows to be defined. In addition to efficiency of the membranes, other factors defining that range
include:
The demand for potable water in the NWTP service area varies seasonally with peak
demands occurring in the summer months, typically in early July. One of the main drivers
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Section 3 • Characterizing the Concentrate
for the increased demand in the summer months is the population spike in the region
associated with tourism and visitors to the local beach areas.
■ Low flows occur during winter months, such as January and February, when demand is
reduced; the present-day demand for water is as low as 8 mgd on a daily basis.
Brunswick County is expecting water demand to increase with the growing population. To
meet the increased demand the county recently increased its raw water purchase
agreement with Lower Cape Fear Water and Sewer Authority to 45 mgd, and is seeking to
add more capacity. For this study, 50 mgd is used as the potential raw water supply.
Table 3-1 presents a range of possible concentrate flows for both the 85% and 92% membrane
efficiency cases.
Table 3-1. Possible Concentrate Flows for Initial Design and Buildout Capacity Conditions and Variable
Membrane Efficiency
Membrane Efficiency/
Flow C. .
Feed Water Flow (mgd) Permeate Flow (mgd)
Concentrate Flow (mgd)
85% Membrane Efficiency
Initial design,
9.4 8.0
1.4
Seasonal low flow
Initial design,
42.4
36
6.4
m
maximum flow
Buildout capacity,
50
42.5
7.5
maximum flow
m
92% Membrane
Efficiency
Initial design,
8.7
8.0
0.7
Seasonal low flow
Initial design,
39.1
36
3.1
m
maximum flow
Buildout capacity,
48.9
45
3.9
maximum flow
After evaluating all the pilot plant data, the membrane plant's design will have a probable
operating range between 90 and 92% recovery. Using the permeate flow numbers above for low
and buildout capacity flows, the range of flows to be used in the concept design of the concentrate
outfall are 0.7 mgd (92% efficiency for current day low permeate flow of 8 mgd) and 5.0 mgd
(90% efficiency for buildout capacity of 45 mgd permeate flow).
3.3 Concentrate Quality
The following testing was performed on the concentrate:
Chemical Analysis - Three samples of the concentrate were collected in February, March
and May 2018 and tested for over 280 parameters in the following categories: organic and
non -organic compounds, ions, pesticides, herbicides and pharmaceuticals. An additional
single sample of the concentrate was collected on April 25, 2018 and analyzed for total
metals, selected dissolved metals, alkalinity, hardness, total organic carbon (TOC), and total
CIDM
Smith

Section 3 • Characterizing the Concentrate
dissolved solids (TDS). Analytical results for the entire list of parameters are included in
Appendix A.
Further chemical testing was conducted in January 2019 on a concentrate sample collected
at 92% efficiency. This sample was tested for a limited suite of parameters focusing on
metals that the initial data sets indicated were closest to water quality standards, and
additional conventional parameters such as BOD, TSS, and nutrients that had not
previously been tested but were needed to compare to primary nursery area criteria. The
2019 sample results are also included in Appendix A.
■ Whole Effluent Toxicity Testing - Seven samples of 85% efficiency concentrate with
reduced chlorine dioxide as a preoxidant were tested for chronic toxicity using the
freshwater organism Ceriodaphnia dubia. An additional five samples of 92% efficiency
concentrate with free chlorine as a preoxidant were tested in December 2018-January
2019; these later samples were dechlorinated prior to toxicity testing.
3.3.1 Comparison of Chemical Quality Data to Water Quality Standards
At the time when samples of the pilot plant concentrate were taken for chemical analysis in
February, March, April, and May 2018, the pilot plant was operating as 85% efficiency. The target
maximum efficiency of the membrane plant is 92%, meaning the concentration of individual
parameters will be more concentrated at the target efficiency. To compare the chemical quality
data to water quality standards, the results of the 2018 chemical analyses run at 85% efficiency
were increased by a factor of 1.875, which is the volume ratio of 15% reject water vs. 8% reject
water.
In January 2019, when the pilot plant was being operated at the target efficiency of 92%, an
additional sample was collected of the concentrate, and was tested for selected parameters for
which the calculated concentrations at 92% efficiency were close to water quality criteria, as well
as additional parameters that were not tested for during prior analyses.
The analytical results for parameters that were either detected or have available water quality
criteria are shown in Table 3-2. Test results for metals and conventional parameters sampled in
April 2018 and January 2019 are presented in Table 3-3.
As discussed in Section 2.2, the proposed location to discharge the concentrate is a section of
Cape Fear River classified as Class C, freshwater. Designated uses for Class C waters include:
■ Aquatic Life -- to protect aquatic organisms and to promote biological integrity.
■ Secondary Recreation -- applies to activities in surface waters that result in incidental
body contact and
■ Fish Consumption -- based on consumption of fish (including shellfish) tissue, commonly
referred to as "Human Health" standards.
Laboratory analytical water quality results at the 92% efficiency values were compared against
applicable Class C North Carolina 15A NCAC 02B Water Quality Standards for Surface Waters (NC
0213) and EPA Nationally Recommended Water Quality Criteria (EPA NRWQC):
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Section 3 • Characterizing the Concentrate
■ Table 3-2: Compares calculated 92% concentrate against NC water quality standards.
Table 3-3: Compares calculated 92% efficiency concentrate against NC Protective Values
for Surface Waters.
■ Table 3-4: Compares calculated (April 2018 and October 2018) and measured (January
2019) concentrate for metals and conventional parameters against NC water quality
standards.
Four parameters had concentrations calculated for 92% concentrate where one or more of the
samples were slightly above water quality criteria or protective values: aluminum, chloride,
manganese, and dichloroacetic acid.
According to January 2019 test results measured in 92% efficiency concentrate, and only one
parameter exceeded the water quality criterion; aluminum was detected at a concentration in the
concentrate (280 µg/L) exceeding the water quality criteria of 87 µg/L. Aluminum had been
identified as exceeding the water quality criteria based on the calculated 92% efficiency as well
and since the aluminum concentration at projected 92% efficiency is higher than the measured
value at 92% efficiency, it will be the determining concentration for needed dilution calculation.
The remaining eleven parameters tested in January 2019 were detected at levels below the
concentrations calculated at 92% efficiency; however, were found to be below water quality
criteria.
Target dilutions to meet the criteria or protective values are presented in Section 3.4.
CDM
3-4 Smith

Section 3 • Characterizing the Concentrate
Table 3-2. Comparison of Concentrate Laboratory Analytical Results against North Carolina Water Quality Criteria
QualityFreshwater Freshwater and Saltwater� Concentrate Water
reportedAll values
Measured at 85% Efficiency Projected at 92% Efficiency
1,1,1-Trichloroethane --- 200,000 < 0.5 < 0.5 < 0.5 < 0.94 < 0.94 < 0.94
1,1,2,2-Tetrachloroethane
---
4.00
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
1,1,2-Trichloroethane
---
8.90
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
1,1-Dichloroethylene
---
20,000
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
1,2,4-Trichlorobenzene
---
0.08
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
1,2-Dichlorobenzene
---
3,000
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
1,2-Dichloroethane
---
650
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
1,2-Dichloropropane
---
31
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
1,3-Dichlorobenzene
---
10
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
1,4-Dichlorobenzene
---
900
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
2,4-D
---
12,000
=
0.1
<
0.005
=
0.059
=
0.10
<
0.01
=
0.11
Acrylonitrile
---
7.00
<
1
<
1
<
1
<
1.88
<
1.88
<
1.88
alpha-Hexachlorocyclohexane
---
0.00039
<
0
<
0.01
<
0.01
<
0.02
<
0.02
<
0.02
Benzene
---
51
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Bromodichloromethane
---
27
=
1.3
=
1
=
0.7
=
2.44
=
1.88
=
1.31
Bromoform
---
120
=
0.6
<
0.5
<
0.5
=
1.13
<
0.94
<
0.94
Bromomethane
---
10,000
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Carbon tetrachloride
---
1.60
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Chlorobenzene
---
800
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Chloroform
---
2,000
=
1.4
=
0.8
=
0.8
=
2.63
=
1.50
=
1.50
Smith 3-5

Section 3 • Characterizing the Concentrate
Chlorpyrifos
reportedClass C & SC All values
Fish Consumption (FC Measured at 85% Efficiency Projected at 92% Efficiency
Acute:0.083 < 0 < 0.03 < 0.03 < 0.06 < 0.06 < 0.06
Chronic: 0.041
Di(2-chloroethyl)ether
---
2.20
<
2
<
2
<
2
<
3.75
<
3.75
<
3.75
Dibromochloromethane
---
21
=
1.4
=
1.1
=
0.6
=
2.63
=
2.06
=
1.13
Dichloromethane
---
1,000
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Ethylbenzene
---
130
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Hexachlorobutadiene
---
18
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Hexachloroethane
---
0.10
<
2
<
2
<
2
<
3.75
<
3.75
<
3.75
Manganese
---
100
=
46
=
17
=
89
=
86.25
=
31.88
=
166.88
Nitrobenzene
---
600
<
5
<
5
<
5
<
9.38
<
9.38
<
9.38
N-Nitrosodiethylamine (NDEA)
---
1.24
---
<
2
<
2
---
<
3.75
<
3.75
N-Nitrosodi-N-butylamine
(NDBA)
__
0.22
---
<
2
<
2
---
<
3.75
<
3.75
N-Nitrosodi-N-propylamine
(NDPA)
---
0.51
---
<
2
<
2
---
<
3.75
<
3.75
N-Nitrosodiphenylamine
(NDPhA)
---
3.00
---
<
20
<
20
---
<
37.50
<
37.50
N-Nitrosopyrrolidine (NPYR)
---
34
---
<
2
=
2.3
---
<
3.75
=
4.31
Tetrachloroethylene
---
3.30
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Toluene
11
520
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
trans-1,2-Dichloroethylene
---
4,000
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Trichloroethylene
---
30
<
0.5
<
0.5
<
0.5
<
0.94
<
0.94
<
0.94
Vinyl chloride
---
2.40
<
0.2
<
0.2
<
0.2
<
0.38
<
0.38
<
0.38
3-6 Smith

Section 3 • Characterizing the Concentrate
Table 3-3. Comparison of Concentrate Laboratory Analytical Results against North Carolina Protective Values
reportedI All values
Fish Measured at 85% Efficiency T- Projected at 92% Efficiency
. .. Consumption
(FC) =mom
1,1,1-Trichloroethane 2,500 --- < 0.5 < 0.5 < 0.5 < 0.94 "0.9 "0.9
1,1,2,2-
Tetrachloroethane
1,000
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,1,2-Trichloro-1,2,2-
trifluoroethane
---
2,200,000
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,1,2-Trichloroethane
2,300
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,1-Dichloroethane
---
100
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,2,4-Trichlorobenzene
61
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,2,4-Trimethylbenzene
390
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,2-Dibromo-3
chloropropane (DBCP)
---
0.13
< 0.2
< 0.2
< 0.2
< 0.38
< 0.38
< 0.38
1,2-Dibromoethane (EDB)
---
0.1
< 0.2
< 0.2
< 0.2
< 0.38
< 0.38
< 0.38
1,2-Dichlorobenzene
470
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,2-Xylene
600
57,000
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,3,5-Trimethylbenzene
630
215
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,3-Dichlorobenzene
390
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
1,4-Dioxane
---
80
= 21
= 13
= 7.8
= 39.38
= 24.38
= 14.63
1,4-Dioxane
---
80
= 21
= 13
= 13
= 39.38
= 24.38
= 24.38
2,4-D
60
---
= 0.054
< 0.005
= 0.059
= 0.10
< 0.01
= 0.11
2-Butanone (MEK)
26,000
750,000
< 5
< 5
< 5
< 9.38
< 9.38
< 9.38
4-Isopropyltoluene
320
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
4-Methyl-2-pentanone
(MIBK)
26,000
160,000
< 2
< 2
< 2
< 3.75
< 3.75
< 3.75
CDM
Smith 3-7

Section 3 • Characterizing the Concentrate
SecondaryAll
Aquatic Life &
,-creation
Acetone 2,000
values reported as ug/L
Fish Measured at 85% Efficiency Projected at 92% Efficiency
(FQ =mom
1,100,000
< 5
--- ---
< 5
< 9.38
---
< 9.38
Acrylonitrile
420
---
< 1
< 1
< 1
< 1.88
< 1.88
< 1.88
alpha-
Hexachlorocyclohexane
23
< 0.01
< 0.01
< 0.01
< 0.02
< 0.02
< 0.02
Atrazine
---
8,200
= 0.46
= 0.5
< 0.005
= 0.86
= 0.94
< 0.01
Benzyl chloride
---
2
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Bromodichloromethane
---
17
= 1.3
= 1
= 0.7
= 2.44
= 1.88
= 1.31
Bromomethane
---
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Carbon disulfide
100
20,000
< 5
< 5
< 5
< 9.38
< 9.38
< 9.38
Carbon tetrachloride
560
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Chlorobenzene
140
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Chloromethane
---
96
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
cis-1,2-Dichloroethylene
---
720
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Cobalt
---
4
< 2
< 2
< 2
< 3.75
< 3.75
< 3.75
Dichloroacetic acid
---
25
= 13
= 19
= 5.5
= 24.38
= 35.63
= 10.31
Dichloromethane
11,000
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Diisopropyl ether
20,000
--
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Ethylbenzene
97
---
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Isopropyl benzene
250
11,000
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Methylmethacrylate
9,600
---
< 1
< 1
< 1
< 1.88
< 1.88
< 1.88
Methyl-t-butyl ether
(MTBE)
34,000
1,500
< 0.5
< 0.5
< 0.5
< 0.94
< 0.94
< 0.94
Metolachlor
240
---
= 0.037
< 0.005
= 0.059
= 0.07
< 0.01
= 0.11
Molybdenum
51,000
2,000
= 3.7
= 2.8
= 3.8
= 6.94
= 5.25
CDM
3-8 Smith

Section 3 • Characterizing the Concentrate
Naphthalene
SecondaryAll
Aquatic Life & Fish Measured
,-creation (FC)
12 950 < 0.5
at 85% Efficiency
values reported as ug/L
Projected
at
92% Efficiency
A
< 0.5
< 0.5
< 0.94
< 0.94 <
0.94
n-Butylbenzene
4
550
< 0.5
< 0.5
< 0.5
< 0.94
<
0.94
<
0.94
Nitrobenzene
4,600
---
< 5
< 5
< 5
< 9.38
<
9.38
<
9.38
N-Nitrosodiethylamine
(NDEA)
25,000
---
< 2
< 2
---
<
3.75
<
3.75
N-Nitrosodimethyla mine
(NDMA)
17,000
---
< 2
< 2
---
<
3.75
<
3.75
N-Nitrosodiphenylamine
(NDPhA)
290
---
---
< 20
< 20
---
<
37.50
<
37.50
n-Propylbenzene
80
2,700
< 0.5
< 0.5
< 0.5
< 0.94
<
0.94
<
0.94
Perchlorate
---
2.8
---
= 0.64
= 0.42
---
=
1.20
=
0.79
Strontium
---
40,000
= 300
= 290
= 360
= 562.50
=
543.75
=
675.00
Tetrachloroethylene
120
---
< 0.5
< 0.5
< 0.5
< 0.94
<
0.94
<
0.94
Tetrahydrofuran
110,000
110,000
< 5
< 5
< 5
< 9.38
<
9.38
<
9.38
Trichlorofluoromethane
---
67,000
< 0.5
< 0.5
< 0.5
< 0.94
<
0.94
<
0.94
Smith 3-9

Section 3 • Characterizing the Concentrate
Table 3-4. Comparison of Metals and Conventional Parameters against Water Quality Criteria
Parameter
AquaticAll waters All waters
0.
Concentrate
Results
Secondary
Consumption
Recreation
I
Projected
Measured
Projected Measured
Measured
Metals - All units are in Vg/L
Aluminum
87 ---
64
120
210
394
280
Acute:340
Arsenic
10
---
---
<
10
< 18.75
< 10
Chronic: 150
Barium
---
---
154
289
176
330
250
Boron
---
---
64
120
---
---
---
Calcium
---
---
44,000
82,500
34,300
64,313
69,200
Acute: 20.191
Copper
Chronic: 12.951
--
< 10
< 19
<
10
< 19
< 10
Iron
1000
10
19
24
45
29
Acute:1031
Lead
Chronic: 4.011
---
---
---
<
10
< 19
< 10
Magnesium
---
---
17,500
32,800
12,100
22,700
25,900
Manganese
---
100
24
45
60
113
60
Potassium
---
---
21,700
40,700
---
---
---
Silica
---
---
28,000
52,500
46,200
86,600
86,200
Sodium
---
---
109,000
204,400
86,100
161,400
129,000
Acute: 168.941
Zinc
Chronic: 170.331
---
< 10
< 19
<
10
< 19
---
Aluminum (dissolved)
---
---
57
107
---
---
---
Iron (dissolved)
---
---
12
23
---
---
---
Manganese (dissolved)
---
---
24
45
---
---
---
Sulfates
250
60
I 113
26
49
70
3-10 Smith

Smith 3-11

Section 3 • Characterizing the Concentrate
3.3.2 Whole Effluent Toxicity Testing
Two sets of whole effluent toxicity tests were conducted: six chronic tests using 85% concentrate
in summer 2018 using reduced levels of chlorine dioxide as a preoxidant (and one with no
preoxidant), and three acute and three chronic tests using 92% concentrate in winter 2018-2019
using free chlorine as a preoxidant.
85% Concentrate WET Results
In the summer 2018, the 85% concentrate from the pilot plant was sent for chronic whole
effluent toxicity testing using Ceriodaphnia dubia. The results of seven tests are presented in
Table 3-5.
Initial toxicity testing completed in April and May 2018 indicated the use of chlorine dioxide as a
preoxidant was contributing significantly to the toxicity associated with the concentrate. As
demonstrated with the results of test 7, from July 2018, eliminating the addition of chlorine
dioxide correlated with no resultant toxicity.
The concentrate for tests 8 through 13 was developed using a reduced dose of chlorine dioxide.
The chronic value for these tests ranged from 4.3% effluent to 15.9% effluent, with no chronic
value able to be determined for test 12 because toxicity was not found at the strongest serial
dilution tested.
Table 3-5 also includes the dilution needed for the chronic values as the inverse of the chronic
value. The maximum dilution needed is 23.3:1.
Table 3-5. 2018 Chronic Whole Effluent Toxicity Test Results for Ceriodaphnia dubia Run with
Concentrate with Reduced Levels of Chlorine Dioxide as a Preoxidant
LOEC1
>90%
22.5%
6.1%
22.5%
11.2% >22.5% 6.1%
IC25 2
>90%
19.8%
6.7%
12.2%
9.1%
>22.5%
5.0%
NOEL
90%
11.2%
3.1%
11.2%
6.1%
22.5%
3.1%
Chronic Value
>90%
15.9%
4.3%
15.9%
8.3%
>22.5%
4.4%
Needed
Dilution for
<1.1:1
6.3:1
23.3:1
6.3:1
12.0:1
<4.4:1
23.0:1
Chronic Value
1 LOEC: Lowest Observed
Effect Concentration
2 IC25: Inhibition Concentration
3 NOEC: No Observed Effect Concentration
* Test 7 -- No observed effects due to chlorine dioxide being turned off during this test
92% Concentrate WET Results
In the winter 2018-2019, the 92% concentrate from the pilot plant was sent for acute and chronic
whole effluent toxicity testing using Ceriodaphnia dubia. The results from five concentrate
samples, three used for acute and three used for chronic testing, are presented in Table 3-6.
CDM
3-12 Smith

Section 3 • Characterizing the Concentrate
The three acute tests were all passed with an 48-hour LC50 at >100% effluent. This meets the
requirement of the primary nursery habitat that "In all instances there may be no acute toxicity in
an effluent concentration of 90 percent."
The three chronic WET tests had chronic value endpoints of >22.5%, >22.5%, and >90%. The first
two test results (16 and 17) were run with a dilution series between 1.5 and 22.5% effluent.
Because no chronic toxicity was found at the highest concentration, the dilution series for test 18
was changed to range from 6.1 to 90% effluent. Even though the 92% concentrate is stronger
than the 85% concentrate tested in the summer (Table 3-5), its' toxicity is less than the toxicity at
85% concentrate. The lower chronic toxicity is attributed to the change of preoxidant in the 85%
concentrate pilot studies (a reduced chlorine dioxide dose) to the 92% concentrate (free chlorine
as a preoxidant).
Table 3-6. Acute and Chronic Whole Effluent Toxicity Test Results for Ceriodaphnia dubia Run with
Dechlorinated 92% Concentrate using Free Chlorine as a Preoxidant
48-hour LC501
na na
>100%
>100%
>100%
LOEC
>22.5%
>22.5%
>90%
na
na
IC25
>22.5%
>22.5%
>90%
na
na
NOEC
22.5%
22.5%
90%
na
na
Chronic Value
>22.5%
>22.5%
>90%
na
na
Needed Dilution
for Chronic Value
<4.4:1
<4.4:1
<1.1:1
na
na
1 LC50: Lethal Concentration to 50% of Organisms
3.4 Needed Dilution
The dilution needed to comply with water quality standards is determined by:
■ Comparing the concentrate quality to North Carolina water quality standards,
■ Taking the inverse of the chronic value from the whole effluent toxicity testing,
■ Applying the safety factor of two to both of these to account for the NC Primary Nursery
Area rules that require both specific individual constituents be allocated at one-half the
normal standard under design conditions (which is equivalent as requiring twice the
dilution at the edge of the mixing zone) and chronic WET test dilution be twice that which
is acceptable under design conditions.
Tables 3-2 through 3-4 provide a comparison of North Carolina water quality criteria and
protective values to the quality of the concentrate. Concentrate quality was lower than of the
water quality standards for all but four parameters: aluminum, chloride, manganese, and
dichloroacetic acid. Table 3-7 summarizes the data for these four parameters and shows that the
criteria or protective values would be met with a dilution of 9.1:1.
Smith 3-13

Section 3 • Characterizing the Concentrate
Table 3-5 provides the needed dilution to meet the chronic value from whole effluent toxicity
testing for the 85% concentrate and reduced concentrations of chlorine dioxide as a preoxidant.
The needed dilutions from tests 8 through 13, which represent typical 85% concentrate, range
from 6.3:1 to 23.3:1. The maximum needed dilution for tests 16 through 18, which represent
typical 92% concentrate is <4.4:1. Applying the NC Primary Nursery Area factor of two across
both sets of chronic WET tests yields a maximum required dilution of 47:1.
Based on the comparison of concentrate quality to individual chemical water quality criteria and
the whole effluent toxicity testing results, the target dilution value for a chronic mixing zone is
47:1. This value is conservative because it is based on WET tests run using chlorine dioxide as a
preoxidant. The tests performed with free chlorine as a preoxidant indicated no chronic toxicity
at the highest dilution tested (90% effluent).
3-14 Smith

Section 3 • Characterizing the Concentrate
Table 3-7. Required Dilution to Meet Water Quality Criteria or Protective Values
*Concentrations are projected from measured values in 85% concentrate; the measured values can be found in Tables 3-2 through 3-4.
**The required dilution at 92% efficiency has been increased by a factor of two to comply with the NC Primary Nursery Area rule that the limit for a specific chemical
constituent shall be allocated one-half of the normal standard at design conditions in high quality waters.
Smith 3-15

Section 4
Characterizing the Cape Fear River at the Proposed
Discharge Location
4.1 Introduction
Concentrate from the Northwest WTP is proposed to be discharged from the south bank of the
Cape Fear River at approximately 34020'16.97"N 78004'21.89"W; Figure 4-1 shows the target
discharge area where a bathymetric survey was conducted and the proposed discharge location.
Since survey and geotechnical evaluations of this proposed location are underway, the location
could move slightly; however, a slight change in location would not alter the analysis described in
this report as river geometry is relatively similar throughout the area of interest, and has been
generally and conservatively characterized as described below.
Figure 4-1. Target Discharge Area on the Cape Fear River
Data on the characteristics of the river needed for concept design and initial dilution modeling
were obtained from the following sources.
■ River flow- USGS gage #02105769 located just upstream of Lock and Dam #1
■ Bathymetry - a bathymetric survey of a 3,000 ft-long stretch of the Cape Fear River at the
proposed discharge location was collected in June 2018
■ Tidal conditions - a month -long field program collected data on water levels, temperature,
salinity and velocities in the target discharge area
Smith 4-1

Section 4 • Characterizing the Cape Fear River at the Proposed Discharge Location
4.2 River Flow
Data from the USGS gage 02105769 were used to characterize flows in the Cape Fear River at
Lock and Dam #1; about 50 years of record are available (1969-2018). While the proposed
discharge location is 18.3 miles downstream of the gage, no modification to the USGS gage record
was made because the incremental ungaged area between the dam and the proposed discharge
location is negligible compared with the gaged watershed area upstream of the dam.
A cumulative distribution function (CDF) of the daily flows at Lock and Dam #1 is shown in
Figure 4-2. The 10th, 50th, and 90th percentile flows are about 1,000 cfs, 2,800 cfs, and 13,500 cfs,
respectively.
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
100
1,000
Flow (cfs)
10,000
Figure 4-2. CDF of the Daily Flows at Lock and Dam #1 on the Cape Fear River
100,000
A 7Q10 analysis was also conducted of the flows from Lock and Dam #1. A 7-day moving average
was calculated of the daily flows, and annual minimum values were identified. The annual
minimum values were ranked and used to evaluate the 10-year return period 7-day mean low
flow. Quantiles in the ranked data itself indicate a 7Q10 of 463 cfs, and a probability distribution
function curve fit to the ranked data indicate a 7Q10 of 492 cfs. The ranked data's close proximity
to the curve fit supports the PDF estimate of 490 cfs. This estimated 7Q10 is more than 60 times
the maximum expected flow of the proposed discharge.
4.3 Bathymetry
4.3.1 Previous Studies
Two extant sources of bathymetry data were identified, but neither has sufficient resolution for
this project so a hydrographic survey was commissioned for the target discharge area. Available
sources of bathymetry were:
CDM
4-2 Smith

Section 4 • Characterizing the Cape Fear River at the Proposed Discharge Location
An EFDC model developed to support a TMDL on the Cape Fear River by the Lower Cape
Fear River Program. The model domain extends from downstream of Wilmington up past
the proposed project site; however, the stretch of river proposed for discharging the NWTP
RO discharge is in a portion of the EFDC model that represents the river's cross section
with a single cell width. This course representation is not sufficient for locating a discharge
outfall.
The United States Army Corps of Engineers (US ACE) also conducted a bathymetric survey
of the river in 2016. This data has a spatial resolution of approximately 50-150 feet. This
data is also not sufficient for discharge dilution evaluation.
4.3.2 Hydrographic Survey
A hydrographic survey was conducted in June 2018 to obtain detailed bathymetric information.
The survey extended for 3,000 feet along the Cape Fear River. This survey allowed the project
team to characterize the river's cross section, and also informed selection of the proposed
discharge location. The bathymetric data survey area is shown in Figure 4-1 and the data are
shown in Figure 4-3.
The hydrographic survey showed the Cape Fear River is approximately 200 to 220 ft wide and
has a minimum bottom elevation of about -29 feet NAVD88. The hydrographic survey performed
in June 2018 revealed large, potentially moveable bedforms in the vicinity of the preferred
discharge location. The bedforms are 6 to 8 feet crest to trough and extend along channel
approximately 150 feet crest to crest. The bathymetric survey conducted in 2016 by USACE also
showed evidence of variable water depth. Though the spatial resolution of the USACE data is not
sufficient to resolve the nature of the bedforms, the locations appear to be consistent in overall
characterization with observations from the 2018 hydrographic survey, suggesting that even if
the bedforms are moveable, they generally conform to an overall characterization on a longer
(interannual) time frame.
Dredging is not performed in this section of the Cape Fear River. The letter report documenting
the hydrographic survey is included in Appendix B.
Figure 4-3. Bathymetric Data Collected near Proposed Discharge Location
Smith 4-3

Section 4 • Characterizing the Cape Fear River at the Proposed Discharge Location
4.3.3 River Channel Characterization
While the hydrographic survey can provide a bathymetric cross section at the location where the
outfall is proposed, the river cross section is defined for dilution modeling using generalized
properties of the river. This is done because a plume spreading away from an outfall will be
subject to the river characteristics over a larger distance than the immediate vicinity of the outfall
alone.
Dilution modeling for this NPDES application takes the conservative approach of using the water
depth at a bedform crest (approximately 19 feet below the mean water surface) for all dilution
modeling scenarios. While some dunes have troughs that extend to a maximum tidally averaged
water depth of 28.8 feet, this water column depth cannot be consistently relied on either over
time as the bedforms potentially move, or over space as the discharge plume moves downstream.
Dilution modeling conducted for this study approximates the river with a rectangular cross
section that has a mean depth of 19 feet and a width of 200 feet. Tidal variations in water levels in
all dilution modeling scenarios reflect tidal variations around this conservative water depth.
4.4 River Tidal Conditions
4.4.1 Field Data Collection
Water level and velocity data were collected along transects in the area of the hydrographic
survey.
Long-term data collected included:
■ Vertical profile of velocity July 19-August 23, 2018 from a stationary bottom -mounted
ADCP, and
Long-term surface and bottom conductivity measurements July 19-August 4, 2018. Data
collected also included DO, temperature and pH.
Intermittent data collected included:
■ Cross channel vessel -mounted ADCP measurements and
■ Vertical conductivity profiles.
The field report from these data collection activities are included in Appendix B.
4.4.2 Velocity Characterization
Figure 4-4 shows depth -averaged, along -channel velocities observed from the ADCP mount
plotted with provisional river flow data at the USGS gage at Lock and Dam #1. During the data
collection period (July 191h to August 23rd), the USGS gage data show the river experienced a large
range of flows from under 1,000 cfs to over 14,000 cfs; using the CDF in Figure 4-1 these flows
span the 101h to 90th percentile flow on record.
Velocities collected demonstrate time periods of both tidal flow reversals intermittently through
the end of July 2018, and downstream velocities varying in magnitude but not sign
(unidirectional) throughout the tidal cycle in August 2018. The field data collection period
represents a variety of river flows; the end of July 2018 is characterized by river flows close to
4-4 Smith

Section 4 • Characterizing the Cape Fear River at the Proposed Discharge Location
1,000-2,000 cfs, which is consistent with typical low to moderate flows in the Cape Fear River
(Figure 4-2). Field data collected after July 23 is characterized by moderate to high flows.
120
100
80
60
40
20
-20
.40
-60
7119/2019 7/2412018 7/2912018 8/312018 8/8/2418 8/13/2019 9/18/2018 8123/2018
Velocity -River Discharge
Figure 4-4. Depth -averaged Velocity Data Plotted with River Discharge at Lock and Dam #1
16000
14000
12000
w
c�
1O00 ar
m
8000
w
d
6000 4
4000
2000
Reversing Tidal Velocities
A characteristic tidal cycle of water level and velocity was developed that represents the design
condition for tidal dilution modeling. This tidal velocity and water level represents "typical" water
level and velocity variations over the course of a tidal cycle under low river flow conditions. EPA
guidance also recommends using a spring tidal representation; however, the data collection
conducted for this study suggested a significant relationship between tidal amplitude and river
flow, suggesting that for the Cape Fear River, a low river flow condition may have a larger impact
on tidal amplitude than the spring/neap cycle.
To characterize the presence of reversing tidal flows, daily minimum depth -averaged along -
channel velocity is assessed with respect to river flow measured at USGS gage at Lock and Dam
#1 in Figure 4-5. The field data suggests that river flows under about 4,000-5,000 cfs exhibit flow
reversal. Because flows in the Cape Fear River are frequently below this threshold of 4,000-5,000
cfs (Figures 4-1 and 4-6), a realistically low -flow condition for dilution modeling purposes
should include tidal reversal. Data collected during the initial 4 days of the data collection period,
from July 19 through July 23, 2018 (river flows from 922 to 1,861 cfs), are used to characterize
net downstream along -channel velocities and mean water levels for NWTP dilution modeling.
Table 4-1 summarizes these characteristics.
Smith 4-5

Section 4 . Characterizing the Cape Fear River at the Proposed Discharge Location
70
60
i
s040
s
cr
40
30
* +
o E
7r
20
• •
#
_ Z
0
10
C #
Q
-10
-30
-40
-50
0
2000
4000 6000 8000 10000 12000 14000
Daily Discharge (cfs)
Figure 4-5.
Daily Observed Minimum Velocity Plotted against Daily Discharge at Lock and Dam #1
100000
t
i
so
PAfa p
W
1000 �� !At",
elf
le �
100
1-Jan-10 1-Jan-11 1-Jan-12 31-Dec-12 31-Dec-13 31-Dec-14 31-Dev-15 30-Dec-16 30-Dee-17
Figure 4-6. River Flows at Lock and Dam #1 for 2010-2017
Table 4-1. River Flow Characteristics used for Dilution Modeling
Characteristic
.•
Subtidal velocity
13.5 cm/s
Mean tidally averaged
downstream velocity during the
period 7/19-7/23
Velocity amplitude
46.5 cm/s
Mean amplitude for entire data
collection period
Mean water level
0.5 m NAVD88
Mean tidally averaged water level
Water level amplitude
0.44 m
Mean amplitude for entire data
collection period
Phase lag (hrs)
1.1 hours
Lag between high/low tide and
zero -velocity. Observed
throughout data collection period.
4-6 Smith

Section 4 • Characterizing the Cape Fear River at the Proposed Discharge Location
Figure 4-7 shows a characteristic tidal velocity and water level curve that is being used for
dilution study modeling. This water level and velocity characterization is a representative tidal
pattern that characterizes design conditions in the Cape Fear River. The net downstream velocity
is superimposed on the tidal velocity in the figure, such that the actual maximum tidal velocities
are 60 cm/s during ebb tide and 33 cm/s during flood tide.
2.50
2.00
1.50
1.00
0.50
U
0
0.00
-0.50
-1.00
-1.50
Velocity
Water Level
0 5 10
Hours after High Water Slack
r 3.50
00
2.50 Q
2.00 z
1.50
a
a)
1.00
0.50
1 11
Figure 4-7. Velocity and Water Level Characterization used for Dilution Modeling
Unidirectional River Velocities
In addition to the initial dilution modeling under tidal conditions, steady river flow model runs
were made to represent the possibility of higher downgradient velocities associated with higher
river flows. At higher river flows the plume will be swept downstream more quickly and this can
represent a worst case for length of mixing zone if the increase in dilution does not increase as
fast as the plume is swept downstream.
Figure 4-4 shows a correlation between depth average maximum velocity and river flow, but not
a monotonically increasing one. For instance, the highest velocity measured on August 17th was
about 110 cm/s (3.6 ft/s) when the river flow was about 12,500 cfs, whereas the peak velocity on
August 23rd was only about 100 cm/s (3.3 ft/s) when the river flow was about 14,600 cfs. Thus, it
is not possible to develop a simple relationship to estimate higher velocity at higher river flow.
Instead model simulations were made at two assumed high river velocities: 150 and 200 cm/s (5
to 6.6 ft/s).
Smith 4-7

Section 4 e Characterizing the Cape Fear River at the Proposed Discharge Location
4.4.3 Water Quality Characterization
Water quality data on temperature, conductivity, pH and dissolved oxygen were collected both
from a pair (top -bottom) of continuously recording meters and vertical profiles of temperature
and conductivity. The data indicate that:
■ Freshwater - The river at the proposed discharge location is fresh. Neither the bottom
mounted continuous probe nor the vertical profiles indicated any presence of salinity.
■ Stratification - There is no temperature or conductivity stratification in the river at the
proposed discharge location.
Sample profile data collected at the proposed discharge sight are shown in Figure 4-8. Additional
profiles are included in the data collection report included in Appendix B.
Round S 20180725 143343
Temperature I'Cj
25 25.5 ICE rf.y 27 27.5 28 28.', 2n ?9.., 30
O
2 • _ ■ A
4 1 A.
+
4 , i •
� i* a •
i ■ a •
a
113
is
.. 3 4 5 L J S l 1C
Sallnity (PSUI, DIssolved Oxygen In,gf 8.
Figure 4-8. Sample Profile Data Collected from Transect Location 2 on July 25, 2018.
4-s Smith

Section 5
Concept Design for Discharge
5.1 Introduction
This section develops design considerations for the concentrate outfall and recommends a
preferred conceptual outfall design.
An outfall system typically comprises three main components:
1. The outfall headworks facilities that discharge the concentrate, by gravity or by pumping,
against various tidal conditions in the receiving water. The headworks provide the
necessary hydraulic head to ensure the concentrate reaches the desired discharge
location.
The outfall conveyance line transports the concentrate from the outfall headworks to the
discharge site.
The outfall terminus is the point at the end of the outfall system where the effluent enters
the receiving water. The terminus can range from a simple open pipe to a multiport
diffuser depending on the mixing requirements.
5.2 Design Considerations
Features of the outfall were determined in consideration of the discharge characteristics and the
receiving water's water levels and velocities. Design constraints include:
■ The discharge flows will vary from 0.7 mgd in low demand times up to 5.0 mgd during peak
demand times.
■ Because of the potentially transient bed forms located in the vicinity of the proposed
discharge, a bottom -mounted outfall is not ideal. A bottom -mounted structure could be
buried with a bedform or could be subject to scour. To avoid these risks, a shore -line
discharge located above the crest of the measured sand waves is preferred.
■ Engineering experience has shown that ideal discharge velocities are between 10 and 15
ft/s, provided sufficient head is available. This range generally provides sufficient
momentum to enhance mixing but is less likely to create scour (depending on the receiving
water's characteristics).
■ A single -port discharge is simplest to construct, so this option was explored first; initial
dilution modeling shows it achieves sufficient mixing. The target discharge velocity guided
the selection of port diameter.
■ To avoid a cross -channel current that might impact boats or other activities near the
surface, a relatively deep outfall is preferred.
Smith 5-1

Section S • Concept Design for Discharge
■ A horizontal discharge is preferred because the discharge of a neutrally buoyant
concentrate at a mid -depth will provide a long flow path for the concentrate to mix with the
river before reaching the bottom or water surface.
Because the range of flows expected at the outfall is large, it is difficult to design an outfall
that can accommodate the full range with sufficient dilution. We propose having a variable -
diameter orifice, such as a Tideflex® "duck -bill" valve, to increase velocity during low plant
flows.
These parameters are consistent for all dilution modeling applications discussed in this report,
unless otherwise specified. Different effective port diameters are used for the extreme high and
low flows. The large range in expected flows precludes achieving acceptable mixing for all flows
without using a variable -diameter port.
5.3 Recommended Concept Design
The recommended concept design is shown in Figure 5-1. The outfall system begins at the reject
line from the membrane filters at the Northwest WTP and will travel over 20,000 feet in a 16-
and/or 20-inch pipe (selection to be made during design) to the south bank of the Cape Fear
River to the east of Hallmark Road NE. Near the shore, the pipe will be reduced to 12 inches.
While the construction method at the river bank has not be defined, it is expected that a trench
will be excavated in the dry into the river bank to the proposed depth of discharge, and the outfall
pipe will be placed several yards back from the current river's edge on a slope similar to that of
the river bank.
At the depth of the proposed discharge, the pipe will transition to a horizontal orientation and be
reduced in size to 8 inches diameter. The pipe will be extended into the river 1 to 2 feet,
depending on the bank protection that is designed and the end of the pipe will be fitted with a
variable orifice similar in design to the wide -bill Tideflex® valve presented in Appendix C. During
design, a structure to protect the terminus of the outfall pipe will be designed to protect it from
submerged trees, anchor lines etc.
5.4 Hydraulics
The hydraulic performance of the proposed outfall was evaluated. As noted above, the final size of
the outfall pipe from the Northwest WTP to the river will be determined during design. For this
concept design, a preliminary hydraulic profile for the proposed 20-inch diameter outfall pipeline
was developed showing the hydraulic grade line elevation (HGLE) for 5.0 and 0.7 mgd discharge
rates along the pipeline route beginning at the WTP extending about 20,000 feet to the river. The
proposed concentrate discharge pressure at the WTP was taken to be 40 psi at elevation 50 feet.
This is more than adequate when compared to the 13 psi needed to deliver the peak discharge of
5.0 mgd to the river without additional pumping. A pressure sustaining valve is proposed at the
WTP to maintain adequate backpressure on the treatment system.
The head needed to discharge through the proposed Tideflex® valve was evaluated. The
proposed wide -bill Tideflex® valve presented in Appendix C will require approximately 0.5 feet
at 0.7 mgd and 4.0 feet of head at 5.0 mgd. With an invert elevation of 38 feet at the top of the
CDM
5-2 Smith

Section 5 • Concept Design for Discharge
river bank adjacent to the discharge location the minimum available head assuming the 500-yr
flood elevation of 18 feet is 20 feet, much more than the needed 4.0 feet for the discharge valve.
60 -
50 -
40 -
- 30 -
W
L�
v
Z 20
O
>H
W
10-
w
illllil�
22.5' BEND
-60
- 50
- 40
30 m
D
20 0
Z
-10 M
-0
--10
-20
-20
-25 i i i i i i d-25
0+00+00 2+00 3+00 4+00 5+00 6+00 7+00
Figure 5-1. Concept Design Concentrate Outfall for Brunswick County's Northwest WTP
The preliminary hydraulic evaluation demonstrates the proposed 20-inch diameter outfall
configuration can adequately convey the concentrate discharge to the river.
Smith
5-3

Section 6
Assessment of North Carolina Primary Nursery
Area Rules
The proposed Brunswick County's concentrate discharge is subject to North Carolina's Primary
Area Nursery Rules (15A NCAC 03R . 0103), which are presented in Section 2.3. This section
provides the assessment of the concentrate discharge against the oxygen consuming waters, total
suspended solids, and volume criteria. The toxics criteria are discussed in Section 7.
The oxygen consuming water criteria and the measured concentrate concentrations (Table 3-4)
were:
■ BODs = 5 mg/L criteria vs. < 2 mg/L measured
■ NH3-N = 2 mg/L criteria vs. three measured values of <0.2 mg/L, <0.4 mg/L and <0.2 mg/L
Dissolved Oxygen -- the BOD and ammonia levels in the concentrate demonstrate that this
is not an oxygen consuming discharge, and thus will not impact the dissolved oxygen levels
in the river.
The TSS criteria requires the solids level be <20 mg/L in non -trout waters. TSS was measured in
the 92% concentrate (Table 3-4) and was found at <2.7 mg/L
The volume criteria require that the wastewater (concentrate) flow be less than 50% of the 7Q10
flow. As discussed in Section 4, the 7Q10 of the Cape Fear River estimated from Lock and Dam 1
flow data is 490 cfs. This estimate is more than 60 times higher than the expected maximum flows
from the proposed discharge at 5.0 mgd, or 7.7 cfs. The maximum expected discharge flows
therefore comprise less than 2% of the total river volume under low river flow (7Q10) conditions.
This is considerably less than the volume criteria.
Smith 6-1

Section 7
CORMIX Modeling to Assess Compliance with
Regulations
7.1 Introduction
CORMIX version 10 is used to simulate dilution but for steady flow cases and throughout the tidal
cycle. For each of the scenarios, the CORMIXI model is used to define:
■ The distance required to reach a target dilution of 47:1, and
The dilution at 100 feet away from the port, which is about half the river width. This
distance was selected because if the plume traveled across the river (as opposed to up- or
down -river as will be the case as ambient velocity increases) then a mixing zone set at 100
feet would allow the other half of the river for migration of fish and other aquatic life in
alignment with North Carolina's mixing zone guidance.
7.2 CORMIXI Inputs
7.2.1 River Geometry
CORMIXI requires inputs on total water depth and local depth at the discharge location. The
bathymetry data (Section 4.3) were used to define total and local water depths, which vary with
tide condition. In the model, these depths represent the distance to the top of the sand waves, and
thus, conservatively limit the depth available to the discharge. This conservative assumption is
appropriate because the sand waves are likely transient features.
CORMIXI also requires an input for the width of the river, which was set at 200 ft (60.96 m)
based on the survey discussed in Section 4.3.
7.2.2 Tidal Conditions: Depth and Velocity Scenarios
The characteristic tidal cycle discussed in Section 4.4 provides a basis for defining specific
dilution model simulations. Simulations were run 1/z hour before and after high and low water
slack tides. EPA's TSD guidance recommends these design scenarios as the most conservative
cases. Other times in the tidal cycle were also simulated, including maximum ebb and flood
conditions. A summary of key simulation inputs is listed in Table 7-1.
Table 7-1. Ambient Water Characteristics for CORMIX Simulations
Smith 7-1

Section 7 • CORMIX Modeling to Assess Compliance with Regulations
TidalTidal Stage Water Depth Velocity Hours in Hours
hour after High 20.3 0.37 0.5 0.5 AHS
slack
Peak Ebb
18.2
1.97
3.7
3.7 AHS
Peak Flood
19.8
1.08
9.9
2.5 ALS
Ambient inputs for CORMIX are summarized in Table 7-2. Because the reversing tide has a
greater peak velocity during ebb than flood, the tidal amplitude was set to the actual observed
maximum velocity in the part of the representative tidal cycle of the simulation itself.
Table 7-2. Summary of CORMIX Ambient Inputs
Maximum tidal velocity 2 ft/s for low water/ebb See Figure 4-7 for characteristic
1.1 ft/s for high water/flood velocities
Tidal velocity at stage
Varies by stage in tidal cycle and
See Table 7-1
range tidal cycle
Tidal period
12.42 hr
M2 tidal period
Time of simulation
Varies by stage in tidal cycle and
See Table 7-1
(hrs before/after slack tide)
range tidal cycle
Average depth
Varies by stage in tidal cycle and
See Table 7-1
range tidal cycle
Depth at discharge
Same as average depth
Wind speed
1 m/s
Default CORMIX value
Manning's n
0.025
Literature value
7.2.3 Concentrate Characteristics
CORMIXI simulations were made with the following inputs to define the concentrate.
■ Low Concentrate Flow: 0.7 mgd (0.031 m3/s)
■ High Concentrate Flow: 5.0 mgd (0.219 m3/s)
■ Concentrate Temperature: The membrane process does not impact temperature. It is
assumed that reject water will have the same temperature as the river from which it way
withdrawn and to which it will be discharged.
All effluent inputs for CORMIX are summarized in Table 7-3.
Table 7-3. Summary of CORMIX Discharge Inputs
Pollutant type Conservative pollutant Does not decay
Effluent density
1000 kg/m3
Neutrally buoyant
0.7 mg (0.031 m3/s)
Flow rate
5.0 mgd (0.219 m3/s)
Two scenarios
CDM
7-2 Smith

Section 7 • CORMIX Modeling to Assess Compliance with Regulations
7.2.4 Outfall Configuration
The conceptual outfall configuration is described in Section 5.3. Based on a range of effluent
flows, the concentrate will be discharged through a single 8-inch variable orifice that has an
effective diameter of 9.4 inches at 5.0 mgd and 5.9 inches at 0.7 mgd.
All outfall and river dimension inputs for CORMIXI are summarized in Table 7-4.
Table 7-4. Summary of CORMIX
Outfall and River
Dimension Inputs
Discharge type
Single port
Nearest bank is on the
Depends on part of
tidal cycle
Value depends on ebb or flood tide
Distance to nearest bank
6 ft (1.8 m)
River width
200 ft (61 m)
Vertical angle theta
0.
Measured from port centerline
Measured counterclockwise from the centerline
Horizontal Angle sigma
90° or 270°
looking downstream — value depends on ebb or flood
tide
Varies from 5.9 inches
to 9.4 inches
A variable orifice of the type of a Tideflex° valve is
Port diameter
(equivalent fixed port
recommended to maintain higher discharge velocity
diameter)
and maintain good discharge performance
This depth is 6 feet above the measured top of the
Modeled port height
6 ft
sand waves that were present during the bathymetry
above bottom (see note)
survey; it represents a water depth of about 11.3 feet
below typical water depth (Table 4-1).
7.3 Description of Scenarios
CORMIX simulations were made for both steady and tidal flow cases. All simulations use
CORMIXI, which is the single port discharge mode in CORMIX.
The steady flow cases represent a high ambient river velocity that would be expected with the
river flow is high and the current is unidirectional. As described in Section 4.4.2, the steady flow
cases were simulated at assumed high velocities of 4.9 and 6.5 ft/s (150 to 200 cm/s) to
determine if these cases represent a worst case in terms of the length of mixing zone needed to
achieve the target dilution of 47:1.
Six tidal flow scenarios are simulated as described in Table 7-2 for both maximum and minimum
expected discharge flow rates, resulting in 12 total simulation scenarios. These simulations use
the tidal mode in CORMIXI.
All dilution values in this report are flux -averaged (or bulk) dilution.
7.4 Results of Initial Dilution Analysis
The steady and tidal model scenarios highlight transport processes that must be considered in
determining an appropriate mixing region for the discharge. All tidal scenarios met the target
dilution of 47:1 within 100 feet of the discharge location. All steady flow scenarios resulted in
Smith 7-3

Section 7 • CORMIX Modeling to Assess Compliance with Regulations
more elongated plumes that remained within 100 feet of the bank from which the plume was
discharged, but were transported further downstream than the plumes in the tidal model
scenarios. This elongated plume trajectory in the steady simulations is due to the conservatively
high ambient river flows that were simulated in the steady simulations, as is discussed below.
These model results help inform an appropriate mixing region for the proposed discharge.
7.4.1 Steady Flow Scenario Results
For the steady flow cases, the distance to achieve a 47:1 dilution is summarized in Table 7-5.
These distances reflect absolute travel distance away from the discharge port in any direction,
rather than distance in a given direction (such as across stream). Because the trajectories
associated with steady flow simulations predominantly move downstream rather than across -
stream, the distances provided in Table 7-5 do not reflect a radius of mixing required around the
port (which would implicitly also extend across the river); rather, they represent a distance
downstream to account for downstream advection during high (unidirectional) flow conditions.
A distance of 189 feet is required to achieve the target 47:1 dilution when the ambient
downstream river velocity is 6.5 ft/s (2 m/s). This conservative case is an unlikely steady state
scenario for the Cape Fear River based on available data. The velocity data discussed in Section 4
show that even at high river flows in the 90th percentile of daily discharges, instantaneous
downstream velocities do not exceed 4 ft/s (1.2 m/s, see Figure 4-4). This scenario therefore
represents a worst case, highly conservative condition.
Table 7-5. Summary of CORMIX Results for Steady Flow Scenarios with a Strong Unidirectional Current
7.4.2 Tidal Flow Scenario Results
Tables 7-6 and 7-7 include the distance needed to achieve a 47:1 dilution under the
characterized tidal cycle used in the CORMIX runs for this application. The tables also provide the
dilution at a distance 100 feet from the port. As can be seen from the tables, the low discharge
flow scenarios generally achieve higher dilutions than the high discharge flow scenarios. For low
discharge flow cases (Table 7-6), higher ambient river velocities during peak flood and peak ebb
transport the discharge away from the plume quickly, which has the effect of lowering dilutions at
distance. Thus among low discharge flow scenarios, the more limiting cases are peak ebb and
flood. The longest distance to achieve a 47:1 dilution is 100 feet, which occurs for the peak flood
(tidal hour 3.7) scenario.
7-4 Smith

Section 7 • CORMIX Modeling to Assess Compliance with Regulations
Table 7-6. Summary of CORMIX Results for Low Discharge Flow Scenarios
d Dilution Distance to.
Tidal Hour Part of Cycle
at 00 ft 47:1 Dilution (feet)
0.5 after highwater
0.5 98:1 30
slack
3.7
3.7 AHS
47:1
100
6.9
0.5 BLS
95:1
40
7.9
0.5 ALS
82:1
43
9.9
2.5 ALS
67:1
49
11.9
0.5 BHS
NA1
29
'Tidal CORMIX simulation is limited by reversing tide. For this simulation, the prediction stopped at a distance of less than 100 feet from the
port.
Figure 7-1 shows dilution with distance from the discharge port for the high and low flow
scenarios during peak ebb (3.7 hours AHS). The figure demonstrates the downstream transport
of the low discharge flow case.
so -
70
60
50
----------------- ----- —�— —-------- -�
40
0 30 -
20
10
t
o r
0 20 40 60 80 100 120
Distance from Port (ft)
Minimum Flow (0.7 mgd) — — — Maximum Flow (5 mgd) - - - - - 47:1 Dilution
Figure 7-1. Flux -averaged Dilution with Distance from the Port during Peak Ebb Tide
Table 7-7. Summary of CORMIX Results for High Discharge Flow Scenarios
Cycle Flux -averaged Dilution Distance achieve
Tidal Hour Part of Tidal
at 00 ft 47:1 Dilution (feet)
0.5 0.5 AHS 60:1 86
3.7
3.7 AHS
68:1
56
6.9
0.5 BLS
61:1
86
7.9
0.5 ALS
59:1
87
9.9
2.5 ALS
66:1
66
11.9
0.5 BHS
64:1
82
Table 7-7 demonstrates that high flow tidal scenarios achieve the target dilution within 55-90
feet depending on the tidal cycle, with distances closer to 90 feet needed within a half hour of
Smith 7-5

Section 7 • CORMIX Modeling to Assess Compliance with Regulations
slack tide. Figure 7-2 shows the dilution with distance from the discharge port for the maximum
and minimum flow cases at 30 minutes after low slack tide (the most conservative high flow
case).
100
90
80
70
60
0
50
40
30
20
10
0
0 20 40 60 80 100 120
Distance from Port (ft)
Minimum Flow {0.7 mgd} — — — Maximum Flow {5 mgd} ----- 47:1 Dilution
Figure 7-2. Flux -averaged Dilution with Distance from the Port at 30 minutes after Low Slack Tide
7.5 Summary
Three CORMIX model scenarios inform the appropriate mixing zone for the proposed discharge
to achieve the target 47:1 dilution:
■ The steady flow scenario with high ambient flows and high discharge flows. This
scenario defines the maximum downstream distance needed to meet the target dilution is
roughly 200 feet from the discharge port.
■ The low discharge flow tidal scenario during peak ebb flows. Peak ebb is the highest
velocity seen during the tidal cycle, as it superimposes net downstream transport on top of
maximum tidal velocities. This model scenario demonstrated the need for a 100-foot
mixing zone downstream from the discharge port, which is within the 200-foot distance
demonstrated as necessary by the steady (unidirectional) river flow cases discussed above.
■ The high discharge flow tidal scenario during slack tide. High and low slack tides are
the most limiting times for the high discharge flow cases. These scenarios demonstrated
that a small distance (approximately 100 feet) into the river's cross section, and upstream
of the discharge location, is needed to achieve the target dilution under all scenarios of
discharge flow and tidal cycle.
Combining the insights from these three scenarios of highest interest, a potential mixing region
that meets dilution requirements and also allows for fish passage would be a 300-ft by 100-ft
rectangle. It would extend 100 feet from the river bank nearest to the discharge into the river's
lateral cross section, 100 feet upriver from the discharge port and 200 feet downriver from the
7-6 Smiith

Smith 7-7

Section 8
Summary
Analyses of the chemical composition and whole effluent toxicity of the concentrate from the pilot
treatment facility at the Northwest WTP were performed to inform the target dilution for a
mixing zone for the proposed concentrate discharge. The chemical analyses indicated that the
concentrate had lower concentrations than corresponding North Carolina water quality criteria
and protective values for all but four parameters: manganese, aluminum, chloride and
dichloroacetic acid. The criteria and protective values can be met for the specific chemical
constituents discharging to a primary nursery area/high quality water with a dilution greater
than 9.1:1. The whole effluent toxicity testing showed that there was no acute toxicity using a 48-
hour LCSO for concentrate generate with membranes at 92% efficiency and free chlorine as a
preoxidant. Regarding chronic toxicity, nine tests were run with different concentrates and
preoxidants with chronic values ranging from 4.3% effluent to >90% effluent. The critical value
of 4.3% effluent would require a dilution of 47:1 to address measured chronic toxicity to a
primary nursery area/high quality water. Between the chemical and WET analyses, the target
dilution is thus 47:1.
The steady flow and tidal scenarios described and analyzed in Section 7 represent a wide range of
river conditions with varying velocities and depths over which to evaluate the initial dilution of
the proposed concentrate discharge. Each steady flow and tidal scenario was evaluated at the
expected minimum and maximum discharge flows. CORMIX model results show that the target
dilutions for chronic toxicity of 47:1 was met within a distance of 100 feet upstream, 200 feet
downstream, and 100 feet across the river from the point of discharge, allowing for establishment
of a 100-ft by 300-ft rectangular chronic mixing zone.
Smith 8-1

s-2 Smith

Smith

Smith

Appendix A • Concentrate Water Quality
Table A. Concentrate Water Quality Laboratory Analytical Results February, March and May 2018
1 Concentrate Water Quality
reportedUnit All values
1,1,1,2-Tetrachloroethane ug/L < 0.5 < 1 0.5 < 1 0.5
1,1,1-Trichloroethane
ug/L
< 0.5
< 1 0.5
< 1 0.5
1,1,2,2-Tetrachloroethane
ug/L
< 0.5
< 1 0.5
< 1 0.5
1,1,2-Trichloro-1,2,2-trifluoroethane
ug/L
< 0.5
< 1 0.5
< 1 0.5
1,1,2-Trichloroethane
ug/L
< 0.5
< 1 0.5
< 0.5
1,1-Dichloroethane
ug/L
< 0.5
< 1 0.5
< 0.5
1,1-Dichloroethylene
ug/L
< 1 0.5
< 1 0.5
< 0.5
1,1-Dichloropropanone
ug/L
< 1 5
< 1 5
< 5
1,1-Dichloropropylene
ug/L
< 1 0.5
< 0.5
< 0.5
1,2,3-Trichlorobenzene
ug/L
< 1 0.5
< 0.5
< 0.5
1,2,3-Trichloropropane
ug/L
< 0.5
< 0.5
< 0.5
1,2,3-Trimethyl benzene
ug/L
< 0.5
< 0.5
< 0.5
1,2,4-Trichlorobenzene
ug/L
< 0.5
< 0.5
< 0.5
1,2,4-Trimethyl benzene
ug/L
< 0.5
< 1 0.5
< 0.5
1,2-Dibromo-3-chloropropane (DBCP)
ug/L
< 0.2
< 1 0.2
< 1 0.2
1,2-Dibromoethane (EDB)
ug/L
< 0.2
< 0.2
< 0.2
1,2-Dichlorobenzene
ug/L
< 0.5
< 0.5
< 0.5
1,2-Dichloroethane
ug/L
< 0.5
< 0.5
< 0.5
1,2-Dichloropropane
ug/L
< 0.5
< 0.5
< 0.5
1,2-Xylene
ug/L
< 0.5
< 0.5
< 0.5
1,3 + 1,4-Xylene
ug/L
< 0.5
< 0.5
< 0.5
1,3,5-Trimethylbenzene
ug/L
< 0.5
< 0.5
< 0.5
1,3-Butadiene
ug/L
< 5
< 5
< 5
cSSmith A-1

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
1,3-Dichlorobenzene ug/L < 1 0.5 < 1 0.5 < 1 0.5
1,3-Dichloropropane
ug/L
< 1 0.5
< 1 0.5
< 1 0.5
1,4-Dichlorobenzene
ug/L
< 1 0.5
< 1 0.5
< 1 0.5
1,4-Dioxane
ug/L
= 21
= 13
= 7.8
1,4-Dioxane
ug/L
= 21
= 13
= 13
1,7-Dimethylxanthine
ng/L
= 20
< 1 10
< 1 10
17alpha-Ethynyl estradiol
ng/L
= 40
< 5
< 1 5
17beta-Estradiol
ng/L
< 5
< 5
< 5
1-Butanol
ug/L
< 2
< 2
< 2
1-Chlorobutane
ug/L
< 5
< 5
< 5
2,2-Dichloropropane
ug/L
< 0.5
< 0.5
< 0.5
2,4-D
ng/L
= 54
< 5
= 59
2-Butanone (MEK)
ug/L
< 5
< 5
< 5
2-Chlorotoluene
ug/L
< 0.5
< 0.5
< 0.5
2-Hexanone
ug/L
< 5
< 5
< 5
2-Methoxyethanol
ug/L
< 0.4
< 0.4
< 0.4
2-Nitropropane
ug/L
< 2
< 2
< 2
2-Propen-1-01
ug/L
< 0.5
< 1 0.5
< 0.5
4-Androstene-3,17-dione
ng/L
< 5
< 5
< 1 5
4-Chlorotoluene
ug/L
< 0.5
< 0.5
< 0.5
4-Isopropyltoluene
ug/L
< 0.5
< 0.5
< 0.5
4-Methyl-2-pentanone (MIBK)
ug/L
< 2
< 2
< 2
4-Nonylphenol
ng/L
= 840
= 250
< 100
4-tert-Octylphenol
ng/L
< 50
< 50
< 50
A-2
Smith

Appendix A 9 Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Feb-18 --:IL Mar-18 _T May-18
Acesulfame-K ng/L 1 3,600 < 1 20 1 180
Acetaminophen
ng/L
25
< 1 5
< 5
Acetone
ug/L
< 1 5
---
< 1 5
Acrylonitrile
ug/L
<
<
<
Albuterol
ng/L
< 1 5
< 5
< 1 5
Allyl chloride
ug/L
< 1 5
< 5
< 1 5
alpha-Hexachlorocyclohexane
ug/L
< 1 0.01
< 0.01
< 1 0.01
Amoxicillin
ng/L
< 1 20
< 20
< 1 20
Anatoxin-a
ug/L
< 1 0.03
< 0.03
< 0.03
Antipyrine
ng/L
< 1 5
< 5
< 5
Atenolol
ng/L
40
120
47
Atrazine
ng/L
460
500
< 1 5
Azithromycin
ng/L
< 20
< 1 20
< 1 20
Bendroflumethiazide
ng/L
< 5
< 5
< 5
Benzene
ug/L
< 0.5
< 0.5
< 0.5
Benzyl chloride
ug/L
0.5
< 0.5
0.5
Bezafibrate
ng/L
< 5
< 5
< 1 5
Bisphenol A
ng/L
< 10
< 10
< 10
Bromacil
ng/L
< 5
< 5
< 5
Bromide
ug/L
710
440
660
Bromobenzene
ug/L
< 0.5
< 0.5
< 1 0.5
Bromochloroacetic acid
ug/L
14
14
5.5
Bromochloromethane
ug/L
< 0.5
< 0.5
< 0.5
Brornodichloroacetic acid
ug/L
1.3
<
<
CDM A-3
Smith

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Bromodichloromethane ug/L =1 1.3 = 1 =1 0.7
Bromoform
ug/L
=1 0.6
< 1 0.5
< 0.5
Bromomethane
ug/L
< 1 0.5
< 1 0.5
< 0.5
Butalbital
ng/L
= 25
= 12
< 5
Butylated hydroxyanisole
ug/L
< 1 0.03
< 1 0.03
< 0.03
Butylparaben
ng/L
< 5
< 1 5
< 5
Caffeine
ng/L
= 330
= 160
< 5
Carbadox
ng/L
< 5
< 1 5
< 5
Carbamazepine
ng/L
= 94
= 34
= 100
Carbon disulfide
ug/L
< 5
< 1 5
< 5
Carbon tetrachloride
ug/L
< 0.5
< 0.5
< 0.5
Carisoprodol
ng/L
< 1 5
< 5
< 5
Chloramphenicol
ng/L
< 1 10
< 10
< 1 10
Chlorate
ug/L
= 680
= 1,300
= 940
Chloridazon
ng/L
< 5
< 5
< 1 5
Chlorite
ug/L
= 2,800
= 2,300
= 1,800
Chloroacetonitrile
ug/L
< 5
< 5
< 5
Chlorobenzene
ug/L
< 0.5
< 0.5
< 0.5
Chlorodibromoaceticscid
ug/L
< 2
< 12
< 2
Chloroethane
ug/L
< 0.5
< 0.5
< 0.5
Chloroform
ug/L
= 1.4
= 0.8
= 0.8
Chloromethane
ug/L
< 1 0.5
< 1 0.5
< 1 0.5
Chloroprene
ug/L
< 1 5
< 1 5
< 1 5
Chlorotoluron
ng/L
< 1 5
< 5
< 5
A-4
Smith

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Chlorpyrifos ug/L < 1 0.03 < 1 0.03 < 1 0.03
Chromium
ug/L
--- ---
--- ---
<1 0.9
Cimetidine
ng/L
< 5
< 5
< 1 5
cis-1,2-Dichloroethylene
ug/L
< 0.5
< 0.5
< 1 0.5
cis-1,3-Dichloropropylene
ug/L
< 0.5
< 0.5
< 1 0.5
cis-Permethrin
ug/L
< 0.0109
< 0.0109
< 0.0109
Clofibric acid
ng/L
< 5
= 110
< 5
Cobalt
ug/L
--- ---
--- ---
< 2
Cotinine
ng/L
= 150
< 1 10
= 45
Cyanazine
ng/L
< 5
< 5
< 5
Cyclohexanone
ug/L
< 5
< 5
< 5
Cylindrospermopsin
ug/L
< 0.09
< 0.09
< 0.09
DEET
ng/L
= 240
= 66
< 10
Dehydronifedipine
ng/L
< 1 5
< 5
< 5
Desethylatrazine
ng/L
= 34
= 30
= 140
Desisopropylatrazine
ng/L
= 160
= 85
= 120
Di(2-chloroethyl)ether
ug/L
< 1 2
< 2
< 1 2
Diaminochlorotriazine
ng/L
= 63
= 69
< 1 5
Diazepam
ng/L
< 5
< 5
< 5
Dibromoacetic acid
ug/L
= 9
= 5.9
= 4.2
Dibromochloromethane
ug/L
= 1.4
= 1.1
= 0.6
Dibromomethane
ug/L
< 0.5
< 0.5
< 1 0.5
Dichloroacetic acid
ug/L
= 13
= 19
= 5.5
Dichlorodifluoromethane
ug/L
< 1 0.5
< 0.5
< 1 0.5
cSSmith A-5

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Dichloromethane ug/L < 1 0.5 < 1 0.5 < 1 0.5
Diclofenac
ng/L
< 1 5
< 5
< 5
Diisopropyl ether
ug/L
< 1 0.5
< 0.5
< 0.5
Dilantin
ng/L
< 1 20
< 20
< 20
Diltiazem
ng/L
< 1 5
< 5
< 5
Dimethipin
ug/L
< 1 0.2
< 0.2
< 0.2
Diuron
ng/L
= 24
= 21
= 27
Epichlorohydrin
ug/L
< 1
< 1
< 1
Erythromycin
ng/L
< 1 10
< 1 10
< 10
Estriol
ng/L
< 1 5
< 1 5
< 5
Estrone
ng/L
< 5
< 5
< j 5
Ethoprop
ug/L
< 0.03
< 0.03
< 0.03
Ethyl acrylate
ug/L
< 1
< 1
< 1
Ethyl Ether
ug/L
< 2
< 2
< 2
Ethyl methacrylate
ug/L
< 1
< 1
< 1
Ethyl tert-butyl ether
ug/L
< 1 3
< 3
< 3
Ethylbenzene
ug/L
< 1 0.5
< 1 0.5
< 0.5
Ethylparaben
ng/L
< 1 20
< 1 20
< 1 20
Flumequine
ng/L
< 1 10
< 10
< 10
Fluoxetine (Prozac)
ng/L
< 10
< 10
< 10
Gemfibrozil
ng/L
< 5
< 5
< 5
Germanium
ug/L
--- ---
--- ---
< 1
Hexachlorobutadiene
ug/L
< 0.5
< 1 0.5
< 0.5
Hexachloroethane
ug/L
< 2
< 1 2
< 2
A-6
Smith

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Ibuprofen ng/L < 1 10 < 1 10 < 1 10
Iodide
ug/L
= 6.8
< 1
= 9.2
lohexal
ng/L
= 880
< 1 10
= 1 1500
lopromide
ng/L
< 1 5
< 1 5
= I 10
IS-1,2,3-Trichloropropane
ug/L
= 115
= 111
= I 109
IS-1,4-Difluorobenzene
ug/L
= 101
= 103
= 91
IS-Acenaphthene-d10
ug/L
= 100
= 101
= 99
IS-Acenaphthene-d10
ug/L
= 100
= 101
= 77
IS-Chlorobenzene-d5
ug/L
= 111
= 93
= 107
IS-Chrysene-d12
ug/L
= 107
= 113
= 112
IS -Indium
ug/L
--- ---
--- ---
_ 78
IS-L-phenylalanine-6
ug/L
= 112
= 97
= 96
IS-NDPA-d14
ug/L
--- ---
= 96
= 100
Isobutylparaben
ng/L
< 5
< 1 5
< 1 5
Isopropyl benzene
ug/L
< 0.5
< 1 0.5
< 0.5
Isoproturon
ng/L
< I 100
< 1 100
< 100
IS-Perchlorate-O
ug/L
--- ---
= 93
= 111
IS-Phenanthrene-d10
ug/L
= 103
= 105
= 105
IS-Phenanthrene-d10
ug/L
= 103
= 105
= 37
IS -Scandium
ug/L
--- ---
--- ---
_ 86
IS -Terbium
ug/L
--- ---
--- ---
_ 81
IS-Tetrahydrofuran-d8
ug/L
= 101
= 99
= 103
IS-Uracil-d4
ug/L
= 84
= 65
= 65
Ketoprofen
ng/L
< 5
< 5
< 5
cSSmith A-7

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Ketorolac ng/L < 1 5 < 1 5 =1 6
Lidocaine
ng/L
= 46
= 100
1 42
Lincomycin
ng/L
< 1 10
< 1 10
< 1 10
Linuron
ng/L
< 1 5
< 1 5
< 1 5
Lopressor
ng/L
= 91
= 110
= 41
Manganese
ug/L
--- ---
--- ---
_ 89
Meclofenamic acid
ng/L
< 5
< 5
< 1 5
Meprobamate
ng/L
= 7.9
= 9.2
= 7.4
M etazochlor
ng/L
< 5
< 5
< 5
Methacrylonitrile
ug/L
< 5
< 5
< 5
Methyl iodide
ug/L
< 1 2
< 2
< 2
M ethylacrylate
ug/L
< 1
< 1
< 1
Methyl methacrylate
ug/L
< 1
< 1
< 1
Methylparaben
ng/L
< 20
< 1 20
< 20
Methyl-t-butyl ether (MTBE)
ug/L
< 0.5
< 1 0.5
< 1 0.5
Metolachlor
ng/L
= 37
< 5
= 59
Molybdenum
ug/L
--- ---
--- ---
_ 3.8
Monobromoacetic acid
ug/L
= 2.7
= 2.1
= 1.7
Monochloroacetic acid
ug/L
< 2
= 5
= 4.2
Naphthalene
ug/L
< 0.5
< 0.5
< 0.5
Naproxen
ng/L
< 10
< 10
< 10
n-Butylacrylate
ug/L
< 1
< 1
< 1
n-Butylbenzene
ug/L
< 1 0.5
< 0.5
< 0.5
Nifedipine
ng/L
< 1 20
< 20
< 20
A-8
Smith

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Nitrobenzene ug/L < 1 5 < 1 5 < 5
N-Nitrosodiethylamine (NDEA)
ng/L
--- ---
< 1 2
< 2
N Nitrosodimethylamine (NDMA)
ng/L
--- ---
< 1 2
< 2
N-Nitrosodi-N-butylamine (NDBA)
ng/L
--- ---
< 1 2
< 2
N-Nitrosodi-N-propylamine (NDPA)
ng/L
--- ---
< 1 2
< 2
N-Nitrosodiphenylamine (NDPhA)
ng/L
--- ---
< 1 20
< 20
N-Nitrosomethylethylamine (NMEA)
ng/L
--- ---
< 2
< 2
N-Nitrosomorpholine (NMOR)
ng/L
--- ---
= 3.8
= 2.5
N-Nitrosopiperidine (NPIP)
ng/L
--- ---
< 2
< 2
N-Nitrosopyrrolidine (NPYR)
ng/L
--- ---
< 2
= 2.3
Norethisterone
ng/L
< 5
< 5
< 5
n-Propylbenzene
ug/L
< 0.5
< 0.5
< 0.5
o-Toluidine
ug/L
< 0.007
< 0.007
< 0.007
Oxolinic acid
ng/L
< 10
< 10
< 10
Oxyfluorfen
ug/L
< 0.05
< 0.05
< 0.05
Pentachloroethane
ug/L
< 1 2
< 2
< 2
Pentoxifylline
ng/L
< 1 5
< 1 5
< 5
Percent CV
ug/L
--- ---
= 1
= 2
Perchlorate
ug/L
--- ---
= 0.64
= 0.42
Primidone
ng/L
= 47
< 1 5
< 5
Profenofos
ug/L
< 0.3
< 0.3
< 0.3
Progesterone
ng/L
< 5
< 5
< 5
Propazine
ng/L
= 9.3
< 5
= 27
Propionitrile
ug/L
< 5
< 5
< 5
cSSmith A-9

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Propylparaben ng/L < 1 5 < 1 5 < 1 5
Quinoline
ng/L
< 1 0.02
= 30
= 8.7
Quinoline
ng/L
< 1 0.02
= 30
< 0.02
Salicylic acid
ng/L
< I 100
< I 100
< 100
sec -Butyl benzene
ug/L
< 0.5
< 1 0.5
< 0.5
Simazine
ng/L
= 160
= 270
= 420
SS-1,2-Dichlorobenzene-d4
ug/L
= 92
= 93
= 86
SS-1,2-Dichloroethane-d4
ug/L
= 98
= 101
= 95
SS-1,3-Dimethyl-2-nitrobenzene
ug/L
= 104
= 96
= 120
SS-1,4-Dioxane-d8
ug/L
---
---
_ 73
= 86
SS-1-Butanol-d10
ug/L
= 93
= 109
= 92
SS-2-Bromopropion ic acid
ug/L
= 103
= 110
= 102
SS-2-Propen-l-ol-d6
ug/L
= 92
= 100
= 80
SS-Benzo(a)pyre ne-d12
ug/L
= 70
= 86
= 91
SS-Bromofluorobenzene
ug/L
= 94
= 101
= 94
SS-NDMA-d6
ug/L
--- ---
_ 125
= 98
SS-o-Toluidine-d9
ug/L
= 54
= 26
= 63
SS-Quinoline-d7
ug/L
= 75
= ! 70
= 94
SS-Toluene-d8
ug/L
= 98
= 97
= 100
SS-Triphenylphosphate
ug/L
= 94
= 98
= 89
Strontium
ug/L
--- ---
--- ---
_ 360
Styrene
ug/L
< 0.5
< 1 0.5
< 1 0.5
Sucralose
ng/L
< 100
= 3,400
= 22,000
Sulfachloropyridazine
ng/L
< 5
< 5
< 5
A-10
Smith

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
Sulfadiazine ng/L =1 350 < 1 5 < 1 5
Sulfadimethoxine
ng/L
< 1 5
< 1 5
< 1 5
Sulfamerazine
ng/L
< 1 5
< 1 5
< 1 5
Sulfamethazine
ng/L
< 1 5
< 1 5
< 1 5
Sulfamethizole
ng/L
< 1 5
< 5
< 1 5
Sulfamethoxazole
ng/L
< 1 5
< 5
< 5
Sulfathiazole
ng/L
< 1 5
< 5
< 5
Sulfometuron Methyl
ng/L
= 9.5
= 120
< 5
Tebuconazole
ug/L
< 0.2
< 1 0.2
< 0.2
tert-Amyl Methyl ether
ug/L
< 3
< 3
< 3
tert-Butyl alcohol
ug/L
< 2
< 2
< 2
tert-Butyl benzene
ug/L
< 0.5
< 0.5
< 0.5
Testosterone
ng/L
< 5
< 5
< 5
Tetrachloroethylene
ug/L
< 0.5
< 0.5
< 0.5
Tetrahydrofuran
ug/L
< 5
< 5
< 5
Theobromine
ng/L
= 63
< 10
= 52
Theophylline
ng/L
< 20
< 20
< 20
Thiabendazole
ng/L
< 5
< 5
< 5
Toluene
ug/L
< 0.5
< 0.5
< 0.5
Total HAAS
ug/L
= 27
= 33.5
= 17.3
Total Microcystins & Nodularins
ug/L
< 0.3
< 1 0.3
< 0.3
Total Organic Carbon (TOC)
mg/L
= 13.5
= 11.7
= 12.2
Total Trihalomethanes
ug/L
= 4.7
= 2.9
= 2.1
trans-1,2-Dichloroethylene
ug/L
< 0.5
< 1 0.5
< 0.5
cSSmith A-11

Appendix A • Concentrate Water Quality
Concentrate Water Quality
Unit All values reported as ug/L
trans-1,3-Dichloropropylene ug/L < 1 0.5 < 1 0.5 < 1 0.5
trans-1,4-Dichloro-2-butylene
ug/L
< 1 5
< 5
< 5
trans-Permethrin
ug/L
< 0.029
< 0.029
< 1 0.029
Tribromoacetic acid
ug/L
< 4
< 14
< 1 4
Tribufos
ug/L
< 0.07
< 0.07
< 1 0.07
Trichloroacetic acid
ug/L
= 2.3
= 1.5
= 1.7
Trichloroethylene
ug/L
< 0.5
< 0.5
< 1 0.5
Trichlorofluoromethane
ug/L
< 0.5
< 0.5
< 0.5
Triclocarban
ng/L
< 1 5
< 5
< 1 5
Triclosan
ng/L
< 1 10
< 10
< 1 10
Trimethoprim
ng/L
< 1 5
< 5
< 5
Tris(1,3-dichloro-2-propyl) phosphate
ng/L
= 960
< 100
= 160
Tris(2-carboxyethyl)phosphine hydrochloride
ng/L
= 90
= 33
= 16
Vanadium
ug/L
--- ---
--- ---
_ 2.9
Vinyl acetate
ug/L
< 5
< 1 5
< 5
Vinyl chloride
ug/L
< 0.2
< 0.2
< 0.2
Warfarin
ng/L
< 5
< 5
< 5
A-12
Smith

Smith

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COMPLE%COASTAL CHANGE MADE CLEAR
310 Greenfield Drive, Suite A ♦ Newport, NC 28570 ♦ Office 252-247-5785 ♦ Fax [phone]
July 17, 2018
Trap Puckette
RPS Evans Hamilton
3319 Maybank Hwy
Johns Island, SC 29455
Project: Cape Fear River Hydrographic Survey
Mr. Puckette,
Geodynamics LLC has completed the data acquisition, processing, and quality control review for the
June 2018 hydrographic survey of 2 sections on the Cape Fear River, NC. All aspects of the
hydrographic planning / instrument calibrations, data acquisition, processing, and QA-QC have been
prepared under the supervision and approval of David J. Bernstein, C.H., PLS (NC PLS License number
L-5151).
Enclosed in this deliverable package you will find the following documents:
1. Final Survey Map illustrating the river condition as of June 28, 2018.
Not provided (as per the official Scope of Work), but maintained on Geodynamics' server and issued
upon request are:
2. Survey Data Files
3. Survey Control and Calibrations
4. Survey Notes
I, David Jerold Bernstein, certify that this project was completed under my direct and responsible charge
from an actual survey made under my supervision; that this survey was performed to meet the
requirements for an LIG/GIS survey [21 NCAC 56.1608] to the accuracy of Class A and vertical
accuracy, when applicable to the Not Applicable standard [(21 NCAC 56.1605(a)], method used to
evaluate the accuracy was Post -processed to Real-time comparisons, VRS RTK-GPS control quality
checks on benchmarks, GPS topo check on riverbed, and data cross-checks; method of measurement
was Multibeam Sonar Paired with Inertial Navigation; date of survey was 6/28/2018; datum used for
survey is NAD 83(2011), and all coordinates are based on NAD 83(2011) NC State Plane Feet, and all
elevations are based on NAVD 88 (Geoid12a). All data meet or exceed standards set forth by the US
Army Corps of Engineers for navigation projects.
This document originally issued and sealed by David J. Bernstein, on July 17, 2018. This electronic
media shM not be considered a certified document. See the official hardcopy for certificate and seal.
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DATA REPORT
Current, Water Quality and Water Level Field
Measurements
Cape Fear River
July 18, 2018 — August 24, 2018
For:
CDM Smith Inc.
5400 Glenwood Avenue, Ste 400
Raleigh, NC 27612
Submitted on:
November 12, 2018
L-10
RPS
3319 Maybank Highway
Johns Island, South Carolina 29455
RPS Project No. 022573
RPS
843-377-0286
843-377-0287 Fax
[e-mail]
Trap Puckette
Senior Project Scientist

Table of Contents
1.0 INTRODUCTION....................................................................................................... 1
2.0 INSTRUMENTATION................................................................................................ 1
2.1 Longterm Measurements — Currents, Water Quality and Water Levels............ 1
2.2 Current Survey Over a Tidal Cycle...................................................................... 2
2.3 Water Quality Profiling....................................................................................... 3
3.0 FIELD OPERATIONS................................................................................................. 3
3.1 Downstream Site................................................................................................. 3
3.1.1 Deployment.....................................................................................................3
3.1.2 Servicing..........................................................................................................4
3.1.3 Recovery..........................................................................................................4
3.2 Upstream Site..................................................................................................... 5
3.2.1 Deployment.....................................................................................................5
3.2.2 Servicing and Vessel Mounted Current Survey .............................................. 5
3.2.3 Recovery..........................................................................................................6
4.0 DATA ANALYSIS....................................................................................................... 6
4.1 Current Data from Bottom Mounted ADCPs...................................................... 6
4.2 Water Quality Data from Long-term Sensors ..................................................... 7
4.3 Vessel Mounted ADCP Data................................................................................ 7
4.4 CTD Profile Data.................................................................................................. 8
4.5 Water Level Data................................................................................................ 8
5.0 RESULTS...................................................................................................................9
5.1 Upstream Site..................................................................................................... 9
5.1.1 Long -Term Currents........................................................................................ 9
5.1.2 Long -Term Water Quality Measurements....................................................
10
5.1.3 Vessel -mounted ADCP Current Surveys.......................................................
10
5.1.4 CTD Profiles...................................................................................................
11
5.1.5 Water Levels.................................................................................................
11
5.2 Downstream Site...............................................................................................
12
5.2.1 Long -Term Currents......................................................................................
12
5.2.2 Long -Term Water Quality Measurements....................................................
12
5.2.3 Vessel -mounted ADCP Current Surveys.......................................................
13
5.2.4 CTD Profiles...................................................................................................
13
5.2.5 Water Levels.................................................................................................
14
i

LIST OF TABLES
(At end of text)
Table Title
1 Timeline of field operations
2 Instrument and CTD deployment locations
Figure
1
Study Locations
LIST OF FIGURES
(At end of text)
Title
2 Downstream Instrument, Sediment Grabs and Profiling Sites
3 Downstream Survey Transects and Transect Profiling Sites
4 Upstream Instrument, Sediment Grabs and Profiling Sites
5 Upstream Survey Transects and Transect Profiling Sites
LIST OF PHOTOGRAPHS
(At end of text)
Photo Title
1 Deploying Downstream bottom mount
2 Installing Downstream surface mount
3 CTD profiling
4 Upstream bottom mount pre -deployment
H

APPENDICES
APPENDIX I -A
Upstream Site — Longterm Current Measurements
APPENDIX I-B
Upstream Site —Auxiliary Data
APPENDIX I-C
Upstream Site — Longterm Water Quality Measurements
APPENDIX I-D
Upstream Site —Vessel Mounted ADCP Current Survey
APPENDIX I-E
Upstream Site — Discharge Measurements
APPENDIX I-F
Upstream Site — CTD Profiles — Deployment
APPENDIX I-G
Upstream Site — CTD Profiles — Current Survey
APPENDIX 1-H
Upstream Site — CTD Profiles — Recovery
APPENDIX 1-1
Upstream Site —Water Levels
APPENDIX 11-A
Downstream Site — Longterm Current Measurements
APPENDIX 11-B
Downstream Site —Auxiliary Data
APPENDIX II-C
Downstream Site — Longterm Water Quality Measurements
APPENDIX 11-D
Downstream Site —Vessel Mounted ADCP Current Survey
APPENDIX II-E
Downstream Site — Discharge Measurements
APPENDIX 11-F
Downstream Site — CTD Profiles — Deployment
APPENDIX 11-G
Downstream Site — CTD Profiles — Current Survey
APPENDIX 11-H
Downstream Site — CTD Profiles — Recovery
APPENDIX II-1
Downstream Site — Water Levels
M

DATA REPORT
CAPE FEAR RIVER CURRENT, WATER QUALITY AND
&TI-111l43' KTMaaI44 M I:F_"RillCi:11 II:1011�i
1.0 INTRODUCTION
RPS was contracted by CDM Smith, Inc. to conduct current measurements, water
quality (WQ) monitoring and water level measurements at two sites on the Cape Fear
River near Navassa, North Carolina as shown in Figure 1. The northern site is referred
to as the Upstream site or Upriver site while the southern site is referred to as the
Downstream site or Downriver site. The study consisted of the following three
components:
• Longterm measurements of currents, water quality and water level at each site,
• A current survey at each site covering a full tidal cycle, and
• The collection of water quality profiles at each site at three different times during
the longterm deployment.
The study covered the period from July 18, 2018 to August 23, 2018. Details of the field
measurement program and the results are provided in this report.
2.0 INSTRUMENTATION
The instrumentation used for the Upstream and Downstream sites were the same
and are described in the following sections.
2.1 Longterm Measurements — Currents, Water Quality and Water Levels
At each measurement site, longterm measurements of various parameters were
made with battery powered, internally logging instrument systems. At each
measurement site, a bottom mounted 1200KHz TRDI ADCP was deployed to measure
the currents as shown in Photograph 1. The ADCP is an acoustic sensor that measures a
profile of the current velocity in a series of 25 cm bins extending from just above the
head of the transducer to the surface. For this deployment, the ADCP was configured to
collect current profiles over a 2-minute period every 6 minutes and record the average
profile based on the 2-minute measurement period.

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
The longterm water quality measurements were made with YSI EXO sensors
equipped with a wiper to reduce biofouling on the sensors. The EXOs were configured
to collect salinity, dissolved oxygen (DO), water depth, and pH. At each measurement
site, one EXO sensor was deployed on the bottom mount such that the sensors were
located approximately 1 meter above the bottom. A second EXO was deployed on a
piling near the shore such that the sensors were located approximately 1 meter below
the surface at low tide. The EXOs were configured to collect data every 10 minutes with
an 8 second averaging interval.
The water level data were collected at each measurement site using a HOBO
pressure -based tide sensor that was installed on the nearshore pilings adjacent the EXO
water quality sensor. The HOBOS were installed such that the sensor port was located
approximately 1 meter below the surface at low tide. The units were set up to take a 6-
minute average of the water level every 6 minutes. Since the HOBOS are non -vented
pressure sensors, it was necessary to install a self -recording barometer at the project
site and use that data to correct the water levels measured by the HOBOS for changes in
barometric pressure during the deployment period. In order to correct the water level
data to a known vertical datum, a nail was driven into the piles on which the HOBOS
were installed, and at each location the offset from the pressure sensor to the nail
reference point was carefully measured. The elevation of the reference point in
NAVD88 was then determined by a surveyor. This offset was used to reference the
measured data to NAVD88.
2.2 Current Survey Over a Tidal Cycle
A current survey was conducted at each measurement site using a vessel
mounted, downward -looking 1200kHz TRDI ADCP equipped with bottom tracking. At
both sites, three transect lines were established across the river and spaced
approximately 200 meters apart. The vessel equipped with the ADCP was driven along
each transect from bank to bank collecting velocity profiles along each transect. The
2

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
three transects were repeated approximately every 30 minutes over approximately 12
hours at each measurement site.
2.3 Water Quality Profiling
CTD casts were performed using an YSI EXO sonde with temperature, pressure,
DO, and turbidity sensors. On the day of the deployment and recovery of the in -situ
sensors, CTD cast were taken in the center of the river at 3 stations spread
approximately 500m apart. The cast were taken about every 15 minutes over
approximately a 6-hour period with the intent being to capture both slack water and
peak ebb or flood conditions.
CTD cast were also taken during the vessel -mounted ADCP current survey at the
center of the channel at each of the 3 transects. During this round of sampling, the
casts were taken at each station approximately every 30-45 minutes for a 12-hour
period.
3.0 FIELD OPERATIONS
The field operations were conducted from July 18, 2018 through August 23, 2018.
Initially, the deployment period was scheduled to cover 2 weeks, but due to issues with
one of the sensors at the Downstream site, the deployment was extended to provide a
full 2 weeks of data at both sites. The field operations are summarized in Table 1 and
discussed in further detail below.
3.1 Downstream Site
3.1.1 Deployment
The water level sensor and the near surface water quality sensor for the
Downstream site were deployed on a piling located along the southern edge of the
channel on July 18, 2018. The bottom mount at the Downstream site with the ADCP
and the WQ sensor was deployed the same day on the southern side of the river. The
deployment locations for the sensors are shown in Figure 2 and the coordinates are

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
provided in Table 2. Following the deployment of the sensors, CTD cast were taken at 3
stations from 1000 to 1600 local time. The station locations for the CTD cast are
included in Table 2 and are also shown in Figure 2.
3.1.2 Servicing
The servicing of the sensors and the current survey conducted with the vessel
mounted ADCP and associated CTD profiling took place between July 24, 2018 and July
27, 2018. During the servicing of the surface mounted, long-term water quality sensor
and water level sensor at the Downstream site on July 24, 2018, it was determined that
the water quality sensor had flooded shortly after deployment and had not recorded
any data. A spare water quality sensor was shipped to the site and installed on July 26,
2018, prior to the start of the vessel mounted current survey.
The vessel mounted current survey was conducted on July 26, 2018 and covered
approximately 12 hours. CTD profiling was collected throughout the vessel mounted
current survey at three stations corresponding to the center of the 3 transect lines. The
locations of the transect lines for the vessel mounted ADCP survey and the CTD profile
stations are shown in Figure 3. The Downstream bottom mount with the long-term
ADCP and water quality sensor was recovered on the July 27,2018, and the equipment
was serviced and redeployed that same day. The location of the bottom mount for the
second deployment was 50 meters west of the original deployment location as shown in
Figure 2.
3.1.3 Recovery
The equipment at the Downstream site was recovered on August 22, 2018. Prior
to the recovery CTD profiles were collected over a 5-hour period starting at
approximately 07:00 local time. The following day 2 sediment samples were collected in
the project area using a surface grab. The locations of the sediment samples are
provided in Table 2.
M

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
3.2 Upstream Site
3.2.1 Deployment
The water level sensor and the near surface water quality sensor for the Upstream
site were deployed on a piling located along the southern edge of the channel on July
19, 2018. The bottom mount at the north site with the ADCP and the WQ sensor was
deployed the same day on the southern side of the river where the survey data had
indicated deeper water depths. The deployment locations for the sensors are show in
Figure 3. Following the deployment of the sensors, CTD cast were taken at 3 stations
from 11:00 to 17:00 local time. The station locations for the CTD Cast are included in
Table 2 and are also shown in Figure 3.
3.2.2 Servicing and Vessel Mounted Current Survey
The servicing of the sensors and the current survey conducted with the vessel
mounted ADCP and associated CTD profiling took place between July 24, 2018 and July
27, 2018. The surface mounted long-term water quality sensor and water level sensor
at the Upstream site were serviced and redeployed on July 24, 2018. The vessel
mounted current survey was conducted on July 25, 2018 and covered approximately 12
hours. CTD profiling was collected throughout the vessel mounted current survey. The
Upriver bottom mount with the long-term ADCP and water quality sensor was
recovered on the July 27,2018, and the equipment was serviced and redeployed that
same day. The location of the bottom mount for the second deployment was 30 meters
northeast of the original deployment location and more towards the northern side of
the channel as shown in Figure 4. The mount was moved to this location because it had
been very difficult to recover after the first deployment and appeared to have been
caught up on logs and other debris present in the deeper water in the southern half of
the channel. The depth sounder on the boat showed that the bottom on the northern
side of the channel was smoother indicating that it had less debris on it.
5

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
3.2.3 Recovery
The equipment at the Upstream site was recovered on August 23, 2018. Prior to
the recovery, CTD profiles were collected over a 4-hour period starting at approximately
08:00 local time. Following the recovery of the equipment 2 sediment samples were
collected in the project area using a surface grab. The locations of the samples are
provided in Table 2.
4.0 DATA ANALYSIS
Data collected during this project was analyzed using a combination of instrument
manufacturer's software and custom in-house analytical tools. As part of the analysis,
the data underwent a series of data quality reviews in which any erroneous or suspect
data was removed or flagged. Details of the processing approach for each of the
sensors are provided below. Please note that the sediment samples collected as part of
this project were shipped to the CDM Smith, and CDM Smith coordinated the analysis of
those samples.
4.1 Current Data from Bottom Mounted ADCPs
The current data was extracted for the raw binary files collected by the upward
looking ADCP on the TRBM using Teledyne software and then further analyzed and
processed using in-house analysis tools. To ensure that the ADCP collected data from
the entire water column, it was set to collect some bins that would be positioned above
the water surface. The instrument will record data for these bins even though they are
out of the water and often these data will appear reasonable. To cut the data above the
water surface, the spike in the backscatter amplitude was used to determine which bin
should be considered the last good bin. As a final step, the data was visually inspected,
and any questionable data was flagged and marked as bad in the final data set. Time
series contour plots of the current data along with depth -averaged data were
generated. In addition, the ancillary and measurement quality data recorded by the
ADCP during the deployment including the water over the instrument, water
0

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
temperature, instrument pitch, roll and heading, vertical velocity and signal amplitude
were plotted.
The processed current data from the bottom mounted ADCP is provided in an
ASCII data file that accompanies this report. A description of the data contained in the
file is provided in the file's header information.
4.2 Water Quality Data from Long-term Sensors
Data was extracted from the water quality sensors using the manufacturer's
software and then processed using in-house analysis tools. Data from the sensors were
inspected to identify any anomalies which would indicate issues with the sensors or
biofouling of the sensors. Plots of the data from the sensors were generated, and the
data is also provided in an ASCII format.
4.3 Vessel Mounted ADCP Data
The data collected during the current survey using the vessel -mounted ADCP was
processed using TRDI's WinRiver software and plotted using in-house software. As part
of the processing, the data has had some horizontal averaging applied. ASCII files of the
processed data from each transect accompany this report.
Vertical contour plots of the data collected on each transect have been created
and provide an indication of the horizontal and vertical variations in the currents along
the transects. As discussed previously, the ADCP cannot collect data near the surface or
near the bottom, and, therefore, no data is shown in these areas. The contour plots
have been oriented such that the left-hand side of the plot is the left-hand side of the
channel headed downriver.
As part of the data collection, the ADCP software calculates the discharge across a
transect using the measured velocities and the cross -sectional area. For the portions of
the water column where it was not possible to collect data with the ADCP, the discharge
values have been estimated by WinRiver by extrapolating the measured values into
these areas. This includes estimates of the discharge in areas along the edge of the river
7

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
between the end of the transect line and the shoreline. Plots of the discharge over time
were created and the data is also provided in an ASCII format.
4.4 CTD Profile Data
The data from the CTD cast were reviewed and plotted. While the instrument
collects data both on the downcast and upcast, only the data from the downcast are
shown in the plots. The data is also provided in an ASCII format.
4.5 Water Level Data
The water level data collected at both sites were corrected for atmospheric
pressure using data from a self -recording barometer installed at the Downriver site. The
corrected water level data was then referenced to NAVD88 using the offset based on
the survey point established on the piling. For the Upstream site, the surveyor was
unable to establish the elevation of the reference point due to issues the cellular service
in that area which provide the corrections needed for the elevation calculations. At the
time, it was expected that a land survey would be conducted in the area as part of the
project, and that the reference point could be surveyed into NAVD88 at that time.
However, Hurricane Florence impacted the project area before that survey was
conducted and delayed those field activities.
Consequently, it was necessary to estimate the elevation of the reference point
using the water level data from the bottom mounted ADCP and the results of the
bathymetry survey. Using the bathymetry data recently collected at the site, it was
possible to determine the elevation of the ADCP pressure sensor and then use that to
calculate a referenced water level elevation at the site using the ADCP water level data.
That information was used to correct the data from the long-term water level sensor to
NAVD88. It is estimated that the error in this approach is approximately +/- 15 cm. It is
intended that a survey team will make it back to the site before the end of 2018 to
confirm that reference point elevation assuming it is still there following Hurricane
Florence.
0

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
5.0 RESULTS
The results of the various measurements are discussed below. In addition to the
plots of the data which are provided in the Appendices and described below, the results
are provided in a digital format in the files that accompany this report. Please note that
all times provided are in UTC and directions are referenced to true North.
5.1 Upstream Site
5.1.1 Long -Term Currents
Plots of the currents measured by the bottom mounted ADCP during the two
deployments at the Upstream site are provided in Append I -A. The data indicate that
during some periods, the currents at this location switch direction with the tidal phase,
but that during other periods the current flow remains continuously downstream
regardless of the tide phase. For periods when the current direction remains constantly
downstream, the magnitude of the flow varies with the tidal phase with the highest
magnitudes associated with low water and the lowest magnitudes associated with high
water. The peak depth -averaged downstream velocity measured was approximately
100 cm/s whereas that peak upstream velocity measured was approximately 40 cm/s.
The plots of the auxiliary data are provided in Appendix I-B and indicate that the
sensor was operating properly and that the data quality parameters are within
acceptable limits. The temperature data indicates that the water temperature varied
approximately 0.5°C over the tidal cycle and also had variations of approximately 2°C
over the period of a week. During the first deployment, the instrument did have pitch
and roll values on the order of 10' which is higher than normal, but within the operating
limits of the sensor. These values along with the issues encountered during the
recovery of the bottom mount suggest that the mount was sitting on logs or other
debris on the bottom. Despite the higher than normal pitch and roll values, the data
were not impacted as the instrument automatically corrects the current measurements
to account for the pitch and roll on the acoustic beam orientation. During the second
9

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
deployment, the pitch and roll values changed throughout the deployment indicating
the mount was settling due to scour around the base of the mount. Here again, the
instrument automatically corrects for the changes in pitch and roll and the quality of the
current measurements was not impacted.
5.1.2 Long -Term Water Quality Measurements
Plots of the long-term water quality measurements at the Upstream site are
provided in Appendix I-C. Both the bottom and the surface sensors provided good data
through August 4, 2018 with the exception of the pH sensor on the bottom sensor which
failed shortly after deployment. Starting on August 4, the time stamp in the data file
from the bottom mounted water quality sensor became erratic, and, consequently, the
data after this date have been disregarded. The surface sensor continued to report
good data through the end of the deployment on August 23, 2018. The salinity levels
measured at the site throughout the deployment were <_ 0.11 PSU indicating that even
though the water levels in this region exhibit a tidal influence, saltwater did not reach
this far upriver during the measurement period. The surface and bottom measurements
for the other parameters were very similar through the deployment period indicating
that the river in this region is generally well mixed.
5.1.3 Vessel -mounted ADCP Current Surveys
Plots of the data from the vessel -mounted ADCP current survey are provided in
Appendix I-D. These data indicate that during the ebb, the highest velocities were on
the southern half of the channel and that the vertical distribution of velocities was
relatively uniform. The maximum depth -averaged velocities observed was
approximately 100 cm/s respectively.
The plots of the discharge measurements calculated from the vessel mounted
ADPC data are provided in Appendix I-E. There is some variability in the discharge
between the transect lines which likely a function of the fact that the river is shallow
and narrow, and, consequently, the amount of the discharge value that is estimated
10

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
versus measured is relatively high which tends to increase the variability in the
measurements.
5.1.4 CTD Profiles
The CTD profiles collected during the deployment and recovery of the instruments
at the site are provided in Appendix I-F. Refer to Figure 4 for the locations of the
profiles. The data show that the salinity levels are uniformly <_ 0.1 PSU throughout the
water column over the measurement period. This data is consistent with
measurements made with the longterm water quality sensors deployed at the site.
The CTD profiles collected during the vessel mounted ADCP current survey are
provided in Appendix I-G. The locations of these profiles correspond to the locations of
the transect lines of the vessel mounted ADCP current survey and are shown in Figure 5.
These data are similar to those collected during the deployment with the salinity levels
throughout the water column over the entire deployment being <_ 0.1 PSU.
The CTD profiles collected during the recovery of the bottom mounted
instruments are provided in Appendix I-H, and the locations of these profiles correspond
to the locations of the profiles collected during the deployment of the bottom mount.
These results are similar to those collected during the previous profiling efforts with the
salinity levels being <_ 0.05 PSU throughout the measurement period over the full water
column.
5.1.5 Water Levels
Plots of the water level data collected at the downstream site are provided in
Appendix 1-I. The data show that the tides at this location are diurnal with a range that
varies from approximately 0.4 m to 1.0 m. The data also indicate that the average water
level at the site varies depending on the stage of the river.
11

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
5.2 Downstream Site
5.2.1 Long -Term Currents
Plots of the currents measured by the bottom mounted ADCP during the two
deployments at the Upstream site are provided in Append II -A. The data indicate that
currents at this location switch direction with the tidal phase, but that the ebb currents
are significantly stronger than the flood currents and the periods during which there
was flow in the upstream direction were significantly shorter than the periods with
downstream flow. During the ebb, the current velocity increases towards the surface
and the maximum depth averaged magnitude observed was approximately 95 cm/s.
The flood currents tended to have less vertical variation and the maximum magnitudes
were on the order of 45 cm/s.
The plots of the auxiliary data are provided in Appendix II -B and indicate that the
sensor was operating properly and that the data quality parameters are within
acceptable limits. The temperature data indicates that the water temperature varied
approximately 0.5°C over the tidal cycle and also had variations of approximately 2°C
over the course of a week. The instrument did experience significant shifts in the pitch
and roll over time indicating settling of the mount due to scour over time. This is typical
of high current conditions with a sand bottom, and the instrument automatically
corrects the current measurements to account for how the pitch and roll impacts the
beam angles of the ADCP.
5.2.2 Long -Term Water Quality Measurements
Results of the long-term water quality measurements at the downstream site are
provided in Appendix II-C. As discussed previously, during the first deployment, the
surface water quality sensor failed, so there is no data for the surface site during the
first week of the deployment. The data from the bottom mounted water quality sensor
indicates during the early part of the study that salinity levels at low tide typically went
to <_0.2 PSU and then increased up to 10 PSU during highwater. However, as the study
12

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
progressed, the spike in the salinity at high water went away and the salinity levels
remained :50.1 PSU during the entire cycle. This is likely the result of heavy rains in the
area during this time which introduced significant amounts of freshwater into the
system. A review of the other parameters indicates that the temperature at the site
showed little variation between the surface and the bottom, whereas the pH and the
DO both tended to be slightly lower on the bottom than at the surface.
5.2.3 Vessel -mounted ADCP Current Surveys
Plots of the data from the vessel -mounted ADCP current survey are provided in
Appendix II-D. These data indicate that during the ebb the highest velocities tend to be
on the southern side of the channel nearest the surface whereas during the flood, the
velocities tend to be more uniform across the channel. The maximum depth -averaged
velocities observed during the ebb and flood were approximately 75 cm/s and 50 cm/s
respectively.
The results of the discharge measurements calculated from the vessel mounted
ADCP data are shown in the plot in Appendix II-E. The discharge measurements
between the 3 transects are consistent and uniform as would be expected.
5.2.4 CTD Profiles
The CTD profiles collected during the deployment and recovery of the instruments
at the site are provided in Appendix II-F. Refer to Figure 2 for the locations of the
profiles. The most notable feature of this data set is that the salinity in the profiles
throughout the water column is <_0.2 PSU during low tide, but when the water level is at
approximately mid -tide, the salinity levels throughout the water column begin rising. As
the water level approaches high tide, the salinity levels steadily increase with the salinity
in the lower portion of the water column running approximately 1 to 1.5 PSUs higher
than those measured at the surface. This data is consistent with measurements made
with the longterm water quality sensors deployed at the site discussed in Section 5.2.2.
13

Current, Water Quality and Water Level Field Measurements November 12, 2018
Cape Fear River, NC
The CTD profiles collected during the vessel mounted ADCP current survey are
provided in Appendix II-G. The locations of these profiles correspond to the locations of
the transect lines of the vessel mounted ADCP current survey and are shown in Figure 3.
Unlike the CTD data collected during the deployment of the bottom mount, the salinity
levels in these profiles remain at or near <_0.1 PSU throughout the entire sampling
period.
The CTD profiles collected during the recovery of the bottom mounted
instruments are provided in Appendix II-H, and the locations of these profiles
correspond to the locations of the profiles collected during the deployment of the
bottom mount. These results are similar to those collected by the profiles during the
vessel mounted ADCP current survey and salinity values remain at :50.1 PSU throughout
the deployment.
5.2.5 Water Levels
Plots of the water level data collected at the downstream site are provided in
Appendix II -I. The data show that the tides at this location are diurnal with a range that
varies from approximately 1 m to 1.8 m.
14

Tables

Table 1: Timeline of field operations
Downstream (South
Site)
Upstream (North
Site)
Surf Bot WL BM CTD VM
Surf Bot WL BM
CTD VM
Date
CTD
CTD
Sensor
ADCP
Prof
ADCP
CTD
CTD
Sensor
ADCP
Prof ADCP
Comments
7/18/2018
F1
X
X
X
X
7/19/2018
F1
X
X
X
X
X1
X
X
X
7/20/2018
F1
X
X
X
X
X1
X
X
7/21/2018
F1
X
X
X
X
X1
X
X
7/22/2018
F1
X
X
X
X
X1
X
X
7/23/2018
F1
X
X
X
X
X1
X
X
7/24/2018
F1
X
X
X
X
X1
X
X
C1
7/25/2018
F1
X
X
X
X
X1
X
X
X X
7/26/2018
X
X
X
X
X
X
X
X1
X
X
C2
7/27/2018
X
X
X
X
X
X1
X
X
0
7/28/2018
X
X
X
X
X
X1
X
X
7/29/2018
X
X
X
X
X
X1
X
X
7/30/2018
X
X
X
X
X
X1
X
X
7/31/2018
X
X
X
X
X
X1
X
X
8/1/2018
X
X
X
X
X
X1
X
X
8/2/2018
X
X
X
X
X
X1
X
X
8/3/2018
X
X
X
X
X
X1
X
X
8/4/2018
X
X
X
X
X
F2
X
X
8/5/2018
X
X
X
X
X
F2
X
X
8/6/2018
X
X
X
X
X
F2
X
X
8/7/2018
X
X
X
X
X
F2
X
X
8/8/2018
X
X
X
X
X
F2
X
X
8/9/2018
X
X
X
X
X
F2
X
X
8/10/2018
X
X
X
X
X
F2
X
X
8/11/2018
X
X
X
X
X
F2
X
X
8/12/2018
X
X
X
X
X
F2
X
X
8/13/2018
X
X
X
X
X
F2
X
X
8/14/2018
X
X
X
X
X
F2
X
X
8/15/2018
X
X
X
X
X
F2
X
X
8/16/2018
X
X
X
X
X
F2
X
X
8/17/2018
X
X
X
X
X
F2
X
X
8/18/2018
X
X
X
X
X
F2
X
X
8/19/2018
X
X
X
X
X
F2
X
X
8/20/2018
X
X
X
X
X
F2
X
X
8/21/2018
X
X
X
X
X
F2
X
X
8/22/2018
X
X
X
X
X
X
F2
X
X
8/23/2018
X
F2
X
X
X
X1 - pH sensor tailed
F1- CTD flooded
F2- CTD time stamp corrupted
Comments:
Cl: Serviced surface gear at both sites
C2: Replaced surface CTD at downstream site
C3: Serviced bottom mounted gear at both sites

Table 2: Instrument and CTD deployment locations
LONGTERM SENSOR LOCATIONS
Upstream Site
Latitude
Longitude
Bottom mounted ADCP & CTD - Deployment 1
34.33815
-78.07148
Bottom mounted ADCP & CTD - Deployment 2
34.33837
-78.07141
Near Surface CTD & WL sensor
34.33817
-78.07093
Downstream Site
Bottom mounted ADCP & CTD - Deployment 1
34.27073
-77.99718
Bottom mounted ADCP & CTD - Deployment 2
34.27080
-77.99770
Near Surface CTD & WL sensor
34.27073
-77.99969
CTD PROFILE LOCATIONS
Upstream Site - Deployment & Recovery
Latitude
Longitude
Upstream - Upriver CTD
34.33797
-78.07491
Upstream - ADCP CTD
34.33828
-78.07170
Upstream - Downriver CTD
34.33872
-78.06857
Downstream Site - Deployment & Recovery
Downstream - Upriver CTD
34.27224
-78.00153
Downstream - ADCP CTD
34.27093
-77.99774
Downstream - Downriver CTD
34.27092
-77.99427
Upstream Site - VM ADCP Survey
Upstream - Upriver CTD
34.338
-78.0727
Upstream - ADCP CTD
34.33828
-78.07170
Upstream - Downriver CTD
34.3385
-78.0698
Downstream Site - VM ADCP Survey
Downstream - Upriver CTD
34.2713
-77.9999
Downstream - ADCP CTD
34.27093
-77.99774
Downstream - Downriver CTD
34.2711
-77.9951
SEDIMENT SAMPLE LOCATIONS
Upstream Site
Latitude
Longitude
Upstream - Crest
34.33830
-78.07131
Upstream - Trough
34.33828
-78.07170
Downstream Site
Downstream - Crest
1 34.27117
-77.99768
Downstream - Trough
1 34.27131
-77.99767

Figures

78°7'0"W
7806'0"W 78°5'0"W 7804'0"W
is3319 Maybank Highway
Johns Island, SC 29455
Tel: [phone]
78°3'0"W 78"2'0"W
1 2
Miles
78"1'0"W 78"0'0"W 77°59'0"W 77°58'0"W 77"57'0"W 77056'0"W 77"55'0"W
Figure 1
4 Current, Water Quality and Water Level Field Measurements
Study Locations
July 18 - August 23, 2018

78°0'10°W 7800'0"W 77059'50"W 77059'40"W
z r r `,�- z
ra
Profiling Sitej
11
41
fi — ,�'^ -. - _ mow•._ . _ . - - - --
f! ~
Sediment Grabs
• Bottom Mount Round 1 j
Bottom Mount Round
OSouth Surface Mount
- o rce: Esri, DigitalGlobe, GeoEye, Earthstar G� eographics, ONES/Airbus DS, USDA, USES,
AeroGRID, IGN, and Ithe GIS User �ommunit
7800'10"W 78*0'0"W 77059'50"W 77'59'40"W
Figure 2
Current, Water Quality and Water Level Field Measurements
John Maybank Highway 0 75 150 300 Downstream Instruments, Sediment Grabs, and Profiling Sites
Johns Island, 7- 29455 Jul 18 - August 23, 2018
Te1:843-377-0286 Meters Y 9

7800'10"W 78°0'0"W 77059'50"W 77°59'40"W
Figure 3
0 75 150 300 Current, Water Quality and Water Level Field Measurements
John s Island, SC 29455 Maybank Highway Downstream Survey Transects and Transect Profiling Sites
Johns
Tel: [phone] Meters July 18 - August 23, 2018

78 4'30"W 78 4'20"W 78 4' 10"W
78°4'30"W 7804'20"W 7804'10"W
Figure 4
0 50 100 200 Current, Water Quality and Water Level Field Measurements
John s Island, SC 29455 Maybank Highway Upstream Instruments, Sediment Grabs, and Profiling Sites
Johns
Tel: [phone] Meters July 18 - August 23, 2018

78 4'30"W 78 4'20"W 78 4' 10"W
7804'30"W 7804'20"W 78°4'10"W
Figure 5
Current, Water Quality and Water Level Field Measurements
John s Island, SC 29455 Maybank Highway 0 50 100 2 1 Upstream Survey Transects and Transect Profiling Sites
Johns
Tel: [phone] Meters July 18 - August 23, 2018

Photographs

F
Photo 1: Deploying Downstream bottom mount
Photo 2: Installing Downstream surface mount

Photo 3: CTD Profiling
Photo 4: Upstream bottom mount pre -deployment

APPENDIX I
Upstream Site

Appendix I -A
Upstream Site
Longterm Current Measurements

Cape Fear River Current and Water Quality Study - Upstream ADCP: June 27, 2018 - July 28, 2018
0
� 1
` 2
U) 3
04
a� 6
t 6
CL 7
a�
E0
0 1
2
(0 3
�: 4
0
M 6
L 6
Q' 7
CD
EM
O
N
E 60
0
'9I6
0
360
N 270
a�
180
a�
90
0
Jun 27
Jul 02
nitude,(c
V�V�V�VVVI� ,I�
C rre t Direction tow rd, deg T)
+y
Deptn Average current magnitude
Deptn Average current Direction (toward, d
Jul 07 Jul 12 Jul 17
Time (Days - UTC)
7• .1 I I I 1 I I -
Jul 22
Jul 27
120
90
60
30
0
360
270
180
90
0

0
� 1
` 2
U) 3
04
a� 6
t 6
CL 7
N
E 0
0 1
2
(0 3
04
a� 6
L 6
Q' 7
CD
irl
NII
N
E 6C
V
'9I1
0
360
N 270
a�
180
a�
90
Cape Fear River Current and Water Quality Study - Upstream ADCP: July 27, 2018 - August 27, 2018
Current Magnitude (cmis)
0
Jul 27
1
� 1
1
1
A AL
Depth Average Current Magnitude
Depth Average Current Direction (toward, deg T)
k 14 h V 4
.� u•t r, r4 �.• ..r..{
Aug 01
Aug 06 Aug 11 Aug 16
Time (Days - UTC)
Aug 21
Auq 26
120
90
60
30
0
360
270
180
90
0

Cape Fear River Current and Water Quality Study - Upstream ADCP: June 27, 2018 - July 28, 2018
0
� 1
2
U) 3
4
L 5
Q6
CD 7
E 0
:E� 1
= 2
U) 3
4
L 5
Q6
CD 7
E 0
� 1
2
3
4
L 5
a6
A 7
0
� 1
2
U) 3
4
L 5
EL
CD 7
15
Mi
V)
E 0
U
7.5
-15
Jun 27
Jul 02
Average
Average Vertical Velocity (cm/s)
Jul 07 Jul 12 Jul 17
Time (Days - UTC)
Jul 22
Jul 27

Cape Fear River Current and Water Quality Study - Upstream ADCP: July 27, 2018 - August 27, 2018
o
� 1
2
U) 3
4
L 5
Q6
CD 7
Eo
:E� 1
= 2
U) 3
4
L 5
Q6
CD 7
E0
� 1
UJ 2
3
4
L 5
a6
7
o
� 1
2
U) 3
4
L 5
EL
CD 7
15
IAR
E 0
U
ll�rror Velocities { mis}
Averaae Correlation (counts).
A, Al A Il 4 .a a a • a • .__
Ilrlr WY�Yi�iYYiirY��
I - - " - • • Vr M"IFw \►V IITITn■= I
1 �
I I
I I
I I
-7.5
-15
Jul 27
Aug 01
Average vercicai v
Aug 06 Aug 11 Aug 16
Time (Days - UTC)
Aug 21
Auq 26

Appendix I-6
Upstream Site
Auxiliary Data

G
5.5
E 6
6.5
7
30
29
U
28
27
26
10
4.75
-0.5
-5.75
-11
360
270
180
90
0
Jun 27
Cape Fear River Current and Water Quality Study - Upstream ADCP: June 27, 2018 - July 28, 2018
Water Over Instrument
Jul 02
I em
Pitcn (61ue) and Roll
Maul
I
Jul 07 Jul 12 Jul 17
Time (Days - UTC)
Jul 22
Jul 27

4
5
E6
7
8
30
28.75
U
27.5
26.25
25
360
270
180
90
0
Jul 27
Cape Fear River Current and Water Quality Study - Upstream ADCP: July 27, 2018 - August 27, 2018
Water Over Instrument
Aug 01
Temperature
Pitcn (61ue) and Roll
Maul
I
Aug 06 Aug 11 Aug 16
Time (Days - UTC)
Aug 21
Aug 26

Appendix I-C
Upstream Site
Longterm Water Quality Measurements

40
35
30
3
H
25
M
N
03
U 20
IIN
A
0
7/18/18
7/19/18 7/20/18 7/21/18 7/22/18 7/23/18 7/24/18
Temp °C Sal psu ODO mg/L pH ...... Water over Sensor (m)
Solid Lines = Surface Instrumentation Dotted Lines = Bottom Instrumentation Vertical Line = CTD Profile
16
14
E
12 0
8 ca
6
4
2
0
7/25/18
0

40
35
30
3
H
25
M
N
03
U 20
IIN
A
0
7/25/18
16
14
E
12 0
8 ca
6
4
2
0
7/26/18 7/27/18 7/28/18 7/29/18 7/30/18 7/31/18 8/1/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
ODO mg/L pH ...... Water over Sensor (m)
Dotted Lines = Bottom Instrumentation Vertical Line = CTD Profile
0

40
35
30
3
H
25
M
N
03
U 20
IIN
A
0
8/1/18
16
14
E
12 0
8 ca
6
4
2
0
8/2/18 8/3/18 8/4/18 8/5/18 8/6/18 8/7/18 8/8/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
ODO mg/L pH ...... Water over Sensor (m)
Dotted Lines = Bottom Instrumentation Vertical Line = CTD Profile
0

40
35
30
3
H
25
M
N
03
U 20
M
0 4--
8/8/18
8/9/18 8/10/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
Upriver
8/11/18 8/12/18 8/13/18 8/14/18
ODO mg/L pH ...... Water over Sensor (m)
Dotted Lines = Bottom Instrumentation Vertical Line = CTD Profile
16
14
E
12 0
a)
co
8 ca
6
4
2
0
8/15/18
0

40
35
30
3
H
25
M
N
03
U 20
M
0 �__
8/15/18
8/16/18 8/17/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
Upriver
8/18/18 8/19/18 8/20/18 8/21/18
ODO mg/L pH ...... Water over Sensor (m)
Dotted Lines = Bottom Instrumentation Vertical Line = CTD Profile
16
14
E
12 0
a)
co
8 ca
6
4
2
0
8/22/18
0

40
35
30
3
H
25
M
N
03
U 20
IIN
A
0
8/22/18
8/23/18 8/24/18 8/25/18 8/26/18 8/27/18 8/28/18
Temp °C Sal psu ODO mg/L pH ...... Water over Sensor (m)
Solid Lines = Surface Instrumentation Dotted Lines = Bottom Instrumentation Vertical Line = CTD Profile
16
14
E
12 0
8 ca
6
4
2
0
8/29/18
0

Appendix I-D
Upstream Site
Vessel -mounted ADCP Current Survey

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship
s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 12:33 - 12:34 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

s te: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Ship
Track
Measurement Time: 12:50 - 12:51 UTC (# Ensembles Averaged: 2)
NW
En Current Magnitude (cmis)
SE
1
150
3
112.5
5
75
n5
a�
7
37.5
9
0
NW
Current Direction (deg T)
SE
1
3
n5 5
a�
7
9
0
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.8m
150
112.5
N
E 75
0
37.5 ..........................
0
0 10
Start
20 30
Distance Traveled (m)
SE
360
270
180
90
0
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
� 3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 13:03 - 13:04 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
S
150
112.5
75
37.5
0
S
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship 'e: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 13:1 1 - 13:12 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.5m
0 10 20
Start
30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2918
Track Measurement Time: 13:18 - 13:19 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.8m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship ate: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 13:24 - 13:25 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10 20
Start
30
Distance Traveled (m)
S
150
112.5
75
37.5
0
S
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 13:33 - 13:34 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship 'e: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2918
Track Measurement Time: 13:39 - 13:49 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.8m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

NW
1
3
n5 5
a�
7
9
NW
1
3
n5 5
a�
7
9
Ship s te: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2918
Track Measurement Time: 13:48 - 13:49 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis)
Current Direction (deg T)
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
150
112.5
N
E 75
0
37.5
0
0 10
Start
20 30
Distance Traveled (m)
SE
150
112.5
75
37.5
0
SE
360
270
180
90
0
SE
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship fie: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 13:57 - 13:58 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.5m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 14:03 - 14:04 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
777'
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.8m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2918
Track Measurement Time: 14:99 - 14:19 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
S
150
112.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship fie: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 14:18 - 14:18 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 14:31 - 14:32 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.8m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

Ship s 'te: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 14:42 - 14:43 UTC (# Ensembles Averaged: 2)
NW En Current Magnitude (cmis) SI
1
3
:55
a�
7
9
NW
3
n
5 5
a�
7
9
Current Direction (deg T)
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
150
112.5
N
E 75
0
37.5.................................
0
0 10
Start
20 30
Distance Traveled (m)
150
112.5
75
37.5
0
SE
360
270
180
90
0
SE
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 14:55 - 14:55 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 15:02 - 15:03 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.5m
0 10 20
Start
30
Distance Traveled (m)
150
112.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship
s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 15:1 1 - 15:12 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
- 150
' 112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 15:27 - 15:27 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
� 3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2618
Track Measurement Time: 15:36 - 15:36 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10 20
Start
30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship
s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2618
Track Measurement Time: 15:46 - 15:47 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10 20
Start
30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship ate: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2618
Track Measurement Time: 16:66 - 16:66 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2618
Track Measurement Time: 16:68 - 16:68 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2918
Track Measurement Time: 16:18 - 16:19 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
3
-Z
5�
n
-
a�
7
9
1
3
n5 5
a�
7
9
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
150
112.5
N
E 75
0
37.5..............................................................................................:................................................. ..........
0
0 10 20 30
Start Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-If
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
Ship ate: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2618
Track Measurement Time: 16:34 - 16:35 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
150
112.5
N
E 75
0
37.5.................................................:..
0
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-If
itzi
180 �
'0
40 50
End

Ship s 'te: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2618
Track Measurement Time: 16:42 - 16:43 UTC (# Ensembles Averaged: 2)
NW En Current Magnitude (cmis) SE
1 150
3 112.5
5 5 w 75
a�
7 37.5
9 0
NW Current Direction (deg T) SE
1
3
n5 5
a�
7
9
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
150
112.5
N
E 75
0
37.5
0
0 10
Start
20 30
Distance Traveled (m)
SE
360
270
180
90
0
01-I
itzi
180 �
'0
40 50
End

Ship s te: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2618
Track Measurement Time: 16:51 - 16:52 UTC (# Ensembles Averaged: 2)
NW En Current Magnitude (cmis) SE
1 150
2.8
112.5
4.5
75
a�
6.3
37.5
8
0
NW Current Direction (deg T) SE
1
2.8
n5 4.5
a�
6.3
8
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
150
112.5
N
E 75
0
37.5 .............................
0
0 10
Start
20 30
Distance Traveled (m)
SE
360
270
180
90
0
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 17 :08 - 17 :08 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

Ship s 'te: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 17 :14 - 17 :14 UTC (# Ensembles Averaged: 2)
NW En Current Magnitude (cmis) SI
2.8
n5 4.5
a�
6.3
8
NW
2.8
n
5 4.5
a�
6.3
8
Current Direction (deg T)
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.3m
150
112.5
N
E 75
0
37.5.................................................:..
0
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
SE
360
270
180
90
0
SE
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship
s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 17 :24 - 17 :24 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship e: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 17 :38 - 17 :38 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 17 :43 - 17 :44 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

Ship s 'te: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 17 :54 - 17 :55 UTC (# Ensembles Averaged: 2)
NW En Current Magnitude (cmis) SE
1 150
2.8 112.5
E
n5 4.5 75
a�
6.3 37.5
8 0
NW Current Direction (deg T) SE
1
2.8
n5 4.5
a�
6.3
8
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
150
112.5
N
E 75
0
37.5.................................................:..
0
0 10
Start
20 30
Distance Traveled (m)
SE
360
270
180
90
0
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 18:04 - 18:05 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 18:12 - 18:12 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
150
112.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship
s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 18:21 - 18:22 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
150
112.5
75
137.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
Ship rte: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 18:32 - 18:33 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
' 112.5
75
MMM
37.5
0
Current Direction (deg T) S
360
270
180
90
0
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
150
112.5
N
E 75
0
37.5
0
0 10
Start
20 30
Distance Traveled (m)
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship e: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 18:40 - 18:41 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship
s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2918
Track Measurement Time: 18:48 - 18:49 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
150
IELL 112.5
mm� 75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2918
Track Measurement Time: 19:29 - 19:39 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.5m
150
112.5
N
E 75
0
37.5.................................................:..
0
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
Ship fie: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2918
Track Measurement Time: 19:33 - 19:34 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
150
112.5
N
E 75
0
37.5.................................................:..
0
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2918
Track Measurement Time: 19:49 - 19:41 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.5m
0 10
Start
20 30
Distance Traveled (m)
S
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship
s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2918
Track Measurement Time: 19:59 - 29:99 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
150
112.5
I 75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship e: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2618
Track Measurement Time: 26:65 - 26:66 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis)
=E=L a
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10 20
Start
30
Distance Traveled (m)
S
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-If
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
0
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship "e Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2618
Track Measurement Time: 26:15 - 26:16 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.5m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 20:24 - 20:25 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.5m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 20:30 - 20:31 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10 20
Start
30
Distance Traveled (m)
150
112.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

Ship s ite: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2918
Track Measurement Time: 29:39 - 29:49 UTC (# Ensembles Averaged: 2)
NW En Current Magnitude (cmis) SI
2.8
n
5 4.5 —
a�
6.3
8
NW
2.8
n
5 4.5
a�
6.3
8
Current Direction (deg T)
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.3m
150
112.5
N
E 75
0
37.5.................................................:..
0
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
SE
360
270
180
90
0
SE
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship "e: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 20:57 - 20:57 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.5m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 21:04 - 2 1: 05 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship e: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 21:13 - 21:14 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship ate: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 2 1:2 4 - 2 1:2 5 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 21:33 - 21:34 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 21:43 - 21:44 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.5m
0 10 20
Start
30
Distance Traveled (m)
150
112.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
2.8
n5 4.5
a�
6.3
8
1
2.8
n5 4.5
a�
6.3
8
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 21:54 - 21:55 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n
5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship 7E,
e: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 22:02 - 22:03 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
150
112.5
gilt!! - - - - - -
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 22:1 1 - 22:12 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
S
150
112.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship fie: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 22:21 - 22:21 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
150
12.5
75
37.5
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship ate: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 22:30 - 22:31 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 22:42 - 22:43 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
r- .
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10 20
Start
30
Distance Traveled (m)
S
150
112.5
75
37.5
0
S
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship rte: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 22:51 - 22:51 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship "e: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 22:57 - 22:58 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.5m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship s7En
: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2618
Track Measurement Time: 23:65 - 23:66 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7m
0 10
Start
20 30
Distance Traveled (m)
S
150
112.5
75
37.5
0
S
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship e: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 23:14 - 23:14 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship fie: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2018
Track Measurement Time: 23:21 - 23:22 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
o--
IL
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.5m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

Ship s te: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2018
Track Measurement Time: 23:27 - 23:28 UTC (# Ensembles Averaged: 2)
NW En Current Magnitude (cmis) SE
1 150
2.8 112.5
n5 4.5 75
a�
6.3 37.5
8 0
NW Current Direction (deg T) SE
1
2.8
4.5
a�
6.3
8
s
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 6.8m
150
112.5
N
E 75
0
37.5...............................................
0
0 10
Start
20 30
Distance Traveled (m)
SE
360
270
180
90
0
01-I
itzi
180 �
'0
40 50
End

1
3
n5 5
a�
7
9
1
3
n5 5
a�
7
9
150
112.5
N
E 75
37.5
0
Ship
s7En
: Cape Fear River Current and Water Quality Study: Transept N-1 - Ebb Tide - July 25, 2018
Track Measurement Time: 23:34 - 23:35 UTC (# Ensembles Averaged: 2)
Current Magnitude (cmis) S
150
112.5
75
37.5
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
0 10
Start
20 30
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
'0
40 50
End

Ship s te: Cape Fear River Current and Water Quality Study: Transept N-2 - Ebb Tide - July 25, 2918
Track Measurement Time: 23:39 - 23:39 UTC (# Ensembles Averaged: 2)
NW En Current Magnitude (cmis) SE
1 150
3 112.5
n5 5 75
a�
7 37.5
9 0
NW Current Direction (deg T) SE
1
3
n5 5
a�
7
9
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.5m
150
112.5
N
E 75
0
37.5 ....
0
0 10
Start
20 30
Distance Traveled (m)
SE
360
270
180
90
0
01-I
itzi
180 �
'0
40 50
End

NW
1
3
n5 5
a�
7
9
NW
1
3
n5 5
a�
7
9
Ship s te: Cape Fear River Current and Water Quality Study: Transept N-3 - Ebb Tide - July 25, 2918
Track Measurement Time: 23:49 - 23:59 UTC (# Ensembles Averaged: 2)
En Current Magnitude (cmis)
o
Current Direction (deg T)
NW Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 7.3m
150
112.5
N
E 75
0
37.5
0
0 10
Start
20 30
Distance Traveled (m)
SE
150
112.5
75
37.5
0
SE
360
270
180
90
0
SE
360
itzi
180 �
'0
40 50
End

Appendix I-E
Upstream Site
Discharge Measurements

Upstream Discharge from Vessel Mounted ADCP Transects
800
600
400
m 200
E
to
L
0 N-1
LA
--0-- N-2
N-3
-200
-400
-600
6
/2s�1`P>
0O ?O AO 60 �O 0O ?O 000
O O O O O O O

Appendix I-F
Upstream Site
CTD Profiles — Deployment

Cape Fear
Upriver CTD
Cast Data
- Down oasts only
Salinity
p
Transect 1
Transect 2
Transect 3
Round 1 20180719 155844
Round 1
20180719 155604
Round 1 20180719 155315
Temperature (°C)
Temperature (°C)
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
)9 '_9.5 30
25 25.5 2i;
26.5 27 27.5 28
28.5 29 29.5 30
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
0
2
4
6
. . A. .
♦ ■ • •
♦ ■ • •
♦ ■ ♦ •
8
$
10
12
1p
12
14
14
♦ ■
•
•
■
♦
•
■
•
3♦
♦ 1
Syk
i
0
2
4
6
S
10
12
14
♦
..
s
i
1
1
2 1
A
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 1 8 9 10
Salinity(PSU), Dissolved Oxygen (mg/L) & UH Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & of-,
Round 2 20180719 160856 Round 2 20180719 160526 Round 2 20180719 160209
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 2515 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
l0
1z
14
• ■A
•
• ■
♦
•
0
2
4
6
8
10
12
14
• •
■
♦ . i
■ •
♦ ■ ♦ •
0
2
4
6
8
10
12
14
• ■
A.
•
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & UH
16:00
Salinity (1`513), Dissolved Oxygen (mg/L)& UH
Water Level
17:00 18:00
7/19/2018
19:00
20:00
Salinity (PSU), Dissolved Oxygen (mg/L) & ci
21:00
22:00

Cape Fear
Upriver CTD
Cast Data
own
- Diss oasts only
Transect 1
Transect 2
Transect 3
Round 3 20180719 161957
Round 3
20180719 161713
Round 3 20180719 161405
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
29 29.5 30
25 25.5
Temperature (°C)
26.5 27 27.5 28
28.5 29 29.5 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
• ■
♦
•
• ■
•
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
0
2
4
6
8
1p
12
14
•
♦ ■
A
•
♦ ■
♦
•
• ■
.
•
0
z
4
6
8
10
12
14
• ■
A
•
• ■
A
•
f
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & off Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & off
Round 4 20180719 163326 Round 4 20180719 162957 Round 4 20180719 162607
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
b
z
4
6
8
1p
12
14
• ■
•
•
O
2
4
6
8
10
12
14
• ■
.
•
♦ ■
♦
•
♦ ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 S 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & c I
16:00
17:00
Salinity (PSU), Dissolved Oxygeri in, L', &
Water Level
18:00
7/19/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & c1
19:00 20:00 21:00 22:00

0
2
4
6
8
10
12
14
Cape Fear Upriver CTD Cast Data *Salinity
Transect 1 Transect 2
Round 5 20180719 164534 Round 5 20180719 164229 Round 5
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 2i, 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26
♦ ■
• ■
♦
♦
•
•
• ■
Z 1
♦
t
•
0
2
4
6
8
10
12
14
♦ ■
♦
•
0
2
4
6
S
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2
Salinity (PSU), Dissolved Oxygen (mg/L) & a Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 6 20180719170125 Round 6 20180719165832 Round 6
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26
b
2
4
6
a
1p
12
14
i
f
i
♦
■
A
•
0
2
4
6
8
10
12
14
• ■
A
11
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
• ■
♦
•
0
2
4
6
a
10
12
14
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (P5U), Dissolved Oxygen (mg/L) & pH
16:00
17:00
Salinity (PSU), Dissolved Oxygen (mg/L) & r•-
Water Level
18:00
7/19/2018
19:00
20:00
Down Casts only
p - A Disso ved C-x Qerl 4b Tem p erature
Transect 3
21:00
22:00

Cape Fear
Upriver CTD
Cast Data
own
- Diss oasts only
Transect 1
Transect 2
Transect 3
Round 7 20180719 171446
Round 7
20180719 171155
Round 7 20180719 170841
Temperature (DC)
25 25.5 26 26-5 27 27.5 28 28.5
29 29.5 10
25 25.5 2i,
Temperature (DC)
26.5 27 275 28
28.5 29 29.5 30
Temperature (oC)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
•
• ■
s
•
•
E
! r
r
s
0
2
4
6
8
10
12
14
t t
r
•
• ■
•
•
• ■
•
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Round 8 20180719 172756 Round 8 20180719 172432 Round 8 20180719 172135
Temperature (DC) Temperature (DC) Temperature (DC)
25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 10 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
fi
a
1p
12
14
e �
1
•
• ■
♦ ■
•
•
•
•
O
2
4
6
8
YO
12
14
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
•
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
0
2
4
6
s
10
12
14
• ■
•
•
• ■
a
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & off
16:00
17:00
Salinity (PSU), Dissolved Oxygen (mg/L) & u.-
Water Level
18:00
7/19/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & W i
19:00 20:00 21:00 22:00

Cape Fear
Upriver CTD
Cast Data
- Down oasts only
Salinity
p
Transect 1
Transect 2
Transect 3
Round 9 20180719 174054
Round 9
20180719 1737.38
Round 9 20180719 173411
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
29 29.5 30
25 25.5
Temperature (°C)
26.5 27 27-5 28
28.5 29 29.5 30
Temperature CC)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
O
0
2
• ■ ♦ •
2
♦ ■ • •
2
• ■ ♦ •
4
4
4
♦ ■ •
♦ ■ ♦ •
6
6
■ ♦ •
6
$
$
8
10
1p
10
12
12
12
14
14
14
♦ ■
♦
•
• ■
♦
•
♦ ■
♦
•
•♦ ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & off Salinity (P5U), Dissolved Oxygen (mg/L) & off Salinity (PSU), Dissolved Oxygen (mg/L) & off
Round 10 20180719 175340 Round 10 20180719 175007 Round 10 20180719 174709
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 10 25 25.5 26 26.5 27 27-5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 30
b
2
4
6
1p
12
14
t t•• • •• r
r
0
2
4
6
$
10
12
14
• ■ ♦ •
• ■ ♦ •
• ■
0
2
4
6
10
12
14
• ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & off
16:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Water Level
17:00 18:00
7/19/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & off
19:00 20:00 21:00 22:00

Cape Fear
Upriver CTD
Cast Data
own
- Diss oasts °nay
Salinity � �;��o ..rred I���:.Y Temperature
� a��l
Transect 1
Transect 2
Transect 3
Round 11 20180719 180749
Round 11
20180719 180420
Round 11 20180719 180040
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
29 29.5 10
25 25.5
Temperature (°C)
26.5 27 27.5 28
29.5 29 29.5 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
t t
r
•
f
A
•
0
2
4
6
8
10
12
14
•
•
•
0
2
4
6
8
10
12
•
•
s
♦
•
• ■ ♦
•
14 I
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 S 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/1-1 & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 12 20180719 182221 Round 12 20180719 181914 Round 12 20180719 181534
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 M 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
b
2
4
6
8
1p
12
14
•
•
O
2
4
6
8
10
12
14
0
2
4
6
8
10
12
14
s !
_
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 S 9 10 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Salinity (PSU), Dissolved Oxygen )mg/L) &
Water Level
17:00 18:00
7/19/2018
19:00
20:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
21:00
22:00

Cape Fear
Upriver CTD
Cast Data
- Down oasts only
Salinity
p
Transect 1
Transect 2
Transect 3
Round 13 20180719 183535
Round 13
20180719 183247
Round 13 20180719 182955
Temperature (DC)
Temperature (DCj
Temperature (oQ
25 25.5 26 26.5 27 27.5 28 28.5
29 29.5 30
25 25.5 2"
26.5 27 27.5 28
28.5 29 29.5 30
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
1z
14
• ■ ♦ •
♦ ■ A •
• ■ ♦ •
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & off Salinity (PSU), Dissolved Oxygen mg L & PH Salinity (PSU), Dissolved Oxygen mg L & el i
Round 14 20180719 184814 Round 14 20180719 184510 Round 14 20180719 184210
Temperature (oC) Temperature (DC) Temperature (DC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
1z
14
A
41
• ■
♦
•
♦ ■
A
•
• ■
♦
•
♦ ■
A
•
♦ ■
A
•
a r
A
•
♦
•
•
• ■
♦
•
• ■
♦
•
A
0
2
4
6
8
10
12
14
O
2
4
6
$
10
12
14
r
♦ ■
A
•
A
■
♦ ■
A
■
■
A
•
♦ ■
♦
•
♦ ■
A
•
♦ ■
♦
•
0
2
4
6
S
10
12
14
0
2
4
6
10
12
14
■
•
■
■
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & off
16:00
Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Water Level
17:00 18:00
7/19/2018
19:00
20:00
Salinity (PSU), Dissolved Oxygen (mg/L) &
21:00
22:00

Cape Fear Upriver CTD Cast Data
Transect 1 Transect 2
Round 15 20180719 190158 Round 15 2018M
Temperature (°C) Temp
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 2i, 26.5 27
D
a
S �■■
0
2
2
4
• ■ O
4
6
• ■ •
6
8
8
10
10
12
12
14
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Di -
Round 16 20180719 191501 Round 16 2018M
Temperature (°C) Temp
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 77
b
2
4
6
1p
12
14
•
■
1
•
♦
•
♦
■
■
■
•
•
•
•
•
•
•
♦
•
•
•
• I
♦ I
• 1
♦ 1
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & c I
16:00
17:00
0
2
4
6
$
Yp
12
14
Salinity (PSU), Dissc
Water Level
18:00
7/19/2018
Down Casts only
Salinity p - A Disso ved Temperature
Transect 3
19:00 20:00 21:00 22:00

Cape Fear
Upriver CTD
Cast Data
- Down oasts only
Salinity
p
Transect 1
Transect 2
Transect 3
Round 17 20180719 192652
Round 17
20180719 192408
Round 17 20180719 192055
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
)9 29.5 30
25 25.5
Temperature (°C)
26.5 27 27.5 28
28.5 29 29.5 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
`
0
2
• ■ ♦ •
♦ ■ ♦ •
•
• ■
2
4
• ■ ♦ •
4
6
6
8
g
10
1p
12
12
14
14
♦ ■
♦
•
♦ ■
L
•
♦ ■
1
•
0
2
4
6
8
10
12
14
■■
/►
♦ ■
• ■
►
♦
•
•
• ■
i 1
♦
2
•
i
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU). Dissolved Oxygen (mg/L) & vH Salinity (PSU), Dissolved Oxygen (mg/L) & DH Salinity (PSU). Dissolved Oxygen (mg/L) & pH
Round 18 20180719 193830 Round 18 20180719 193546 Round 18 20180719 193251
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 10 25 25S 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
z
4
6
8
10
12
14
0
2
4
6
8
1p
12
14
• ■
♦
•
0
z
4
6
8
10
12
14
■■ ■■■ ■
• ■
■A
♦
•
• ■
• ■
♦
♦
•
•
• ■
1
♦
•
!
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & vl-f
Salinity (PSU), Dissolved Oxygen (mg/L)& vH
Water Level
Salinity (PSU), Dissolved Oxygen (mg/L) & vi i
16:00 17:00 18:00 19:00 20:00 21:00 22:00
7/19/2018

0
2
4
6
8
10
12
14
Cape Fear Upriver CTD Cast Data *Salinity
Transect 1 Transect 2
Round 19 20180719 195027 Round 19 20180719194745 Round 19
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 78.5 29 29.5 30 25 25.5 _i; 26.5 77 27.5 28 28.5 29 29.5 30 25 25.5 26
♦ ■
♦
•
• ■
►
•
0
2
4
6
8
1p
12
14
• ■
• ■
•
♦
•
•
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 S 9 10 0 1 2
Salinity (PSU), Dissolved Oxygen (mg/L) & off Salinky (P5U), Dissolved Oxygen (mg/L) & t 1I
Round 20 20180719 200300 Round 20 20180719 200003 Round 20
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26
0
2
4
6
8
1p
12
14
+�
♦ ■
A
►
s
•
• ■
♦
•
•
•
•
•
0 1 2 3 4 5 6 7 8 9 1Q 0 1 2 3 4 5 6 7 S 9 10 0 1 2
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
salinity (PSU), Dissolved Oxygen (mg/L) & c I I
16:00
17:00
0
2
4
6
8
1p
12
14
N
A
• ■
♦
•
• ■
►
•
♦ ■
♦
•
• ■
A
•
♦ ■
♦
•
Salinity (PSU), Dissolved Oxygen )mg/L) &
Water Level
18:00
7/19/2018
19:00
0
2
4
6
8
10
12
14
20:00
Down Casts only
p A Disso ved C-x Y Qerl Temperature
Transect 3
21:00
22:00

Cape Fear
Upriver CTD
Cast Data
- Down oasts only
Salinity
p
Transect 1
Transect 2
Transect 3
Round 21 20180719 201530
Round 21
20180719 201231
Round 21 20180719 200927
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
29 29.5 30
25 25.5 i;
Temperature (°C)
26.5 27 27.5 28
28.5 29 29.5 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
l
O
2
• ■ r •
2
4
- •
4
6
6
8
8
10
10
12
12
14
14
• ■
a
•
• ■
♦
•
• ■
•
•
D
2
4
6
8
10
12
14
♦ ■
•
•
S
• ■
•
•
♦ ■
♦
•
• ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & off Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) &
Round 22 20180719 202756 Round 22 20180719 202449 Round 22 20180719 202151
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
a
1p
12
14
D
2
4
6
8
10
12
14
i
•
♦ ■
•
•
• ■
A
•
• ■
♦
•
s
:
i
D
2
4
6
8
10
12
14
•
• ■
i
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 L
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & c I
16:00
17:00
Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Water Level
18:00
7/19/2018
19:00
20:00
Salinity (PSU), Dissolved Oxygen (mg/L) &
21:00
22:00

Cape Fear Upriver CTD Cast Data *Salinity
Transect 1 Transect 2
Round 23 20180719 204115 Round 23 20180719 203748 Round 23
Temperature (°[) Temperature (T)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 _i; 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26
0
0
2
• ■ •
2
4
4
6
6
10
10
12
12
14
14
♦ ■
♦
•
• ■
♦
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2
Salinity (PSU), Dissolved Oxygen (mg/L) & off Salinity (P5U), Dissolved Oxygen (mg/L) & off
Round 24 20180719 205425 Round 24 20180719 205050 Round 24
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 10 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26
■
A
•
• ■
♦
•
t
i i
i
i
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
U
2
4
6
$
10
12
14
• ■ ♦
•
• ■ ♦
•
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2
10.5
d 10.0
9.5
0/ 9.0
m
3: 8.5
8.0
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & off
16:00
Salinity (PSU), Dissolved Oxygen (mg/L)& nH
Water Level
17:00 18:00
7/19/2018
19:00
20:00
Down Casts only
p A Disso ved C-x Y Qerl Temperature
Transect 3
21:00
22:00

10.5
d
10.0
9.5
0/
9.0
m
8.5
8.0
15:00
Cape Fear Upriver CTD Cast Data
Transect 1 Transect 2
16:00
Water Level
Down Casts only
Salinity p A Disso ved f---x-Y Qerl
Transect 3
Temperature
17:00 18:00 19:00 20:00 21:00 22:00
7/19/2018

Appendix I-G
Upstream Site
CTD Profiles — Current Survey

Cape Fear Upriver CTD Cast Data Down Casts only
*Salinity � pH ■Dissolved Oxygen
Transect 1 Transect 2 Transect 3
Round 1 20180725 124336 Round 1 20180725 125702 Round 1 20180725 130510
Temperature (°[) Temperature ('Q Temperature (°Q
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 27.5 28 29.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
0
z
4
6
8
10
12
14
I
♦ ■
♦
•
• ■
1
•
D
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L)& PH Salinity (PSU), Dissolved Oxygen (mg/L)& p11
Round 2 20180725132021 Round 2 20180725132712
Temperature ('Q Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
0
2
4
6
8
10
12
14
2.5 —
2.0 —
v
E
1.5 —
f6
1.0
0.5
12:00
0
2
4
6
8
10
12
14
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
♦ ■
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
l
• ■
♦
•
• ■
♦
•
t 1
t
0
z
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
Salinity (PSU), Dissolved Oxygen (mg/L) & ,i
—ervl p erature
29 29.5 30
• ■
♦
•
• ■
♦
•
• ■
L
•
i
8 9 10
29 29 5 30
♦ ■
♦
•
• ■
♦
•
♦ ■
♦
a
S
t
• ■
4
♦
•
• ■
♦
•
A
t 1
t
=
8 9 10
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

Cape Fear Upriver CTD Cast Data Down Casts only
*Salinity � p IH ■ Dissolved Oxygerl er-I p erature
Transect 1 Transect 2 Transect 3
Round 3 20180725 133530 Round 3 20180725134348 Round 3 20180725 135048
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 27.5 28 29.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Round 4 20180725 135913 Round 4 20180725 140459 Round 4 20180725 141229
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
YO
1z
14
2 �
i
• ■
♦ ■
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
• ■
♦
♦
•
•
♦ ■
♦
•
♦ ■
♦
•
s 1
:
:
♦ ■
♦
•
0
0
2
4
6
8
10
12
14
S �
r
• ■
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
•
♦
•-
■■■
2 l
1
•
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
2.5
• ■
♦ ■
2
♦
♦
f
•
•
!
•
S
i 1
> 2.0 -�
Iv
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & :i.
0
2
4
6
8
10
12
14
i i
i
i
♦ ■
♦
•
• ■
♦
•
s
:
2
•
A
t
Salinity (PSU), Dissolved oxygen (mg/L)& pH
Water Level
i i
t
•
2 �
s
s i
s
• ■
♦
•
Salinity (PSU), Dissolved oxygen (mg/L) & W
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & FAI Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Round 6 20180725 145734 Round 6 20180725 150454 Round 6 20180725 151426
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
10
12
14
A
A
•
■ A
■ A
■ A
: A •
• ■ A •
• ■ ♦ •
■ A
• ■ A •
Cape Fear Upriver CTD Cast Data Down Casts only
*Salinity � p IH ■ Dissolved Oxygerl er-I p erature
Transect 1 Transect 2 Transect 3
Round 5 20180725143343 Round 5 20180725 144549
Temperature (°C) Temperature ("C)
25 25.5 2" 26.5 27 275 28 29.5 29 29.5 30 25 25.5 26 26-5 21 27.5 28 28.5 29 29.5 30
O
2
4
6
8
10
12
14
•
2 1
A
=
♦
♦♦ ■■
••
♦ ■
♦
•
• ■
A
•
♦ ■
♦
•
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
2.5
0
• ■
:
♦
:
•
♦ ■
♦
•
•
1
A
_
♦ ■
• ■
A
•
• ■
A
•
:
•
• ■
A
•
• ■
A
•
> 2.0 -�
v
E 1.5 —
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & :,.
0
2
4
6
1p
12
14
■
A
•
A
♦ ■
A
:
A
■
AA.
1
A
1
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
•
A
•
• ■
A
•
• ■
♦
•
• ■
A
•
■
A
♦ ■
♦
•
♦ ■
♦
•
2I
t
i
Salinity (PSU), Dissolved Oxygen (mg/L) & ,i
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

Cape Fear Upriver CTD Cast Data Down Casts only
*Salinity � p IH ■ Dissolved Oxygerl er-I p erature
Transect 1 Transect 2 Transect 3
Round 7 20180725 152907 Round 7 20180725153829 Round 7 20180725 154926
Temperature (DC) Temperature (oC) Temperature (oQ
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
l0
12
14
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 8 20180725 160203 Round 8 20180725 161044 Round 8 20180725 162135
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 29.5 29 29.5 30 25 255 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
■
♦
•
• ■
♦
•
• ■
♦
•
• ■
A
•
a ■
♦
•
♦ ■
L
•
♦ ■
♦
•
$
F
♦ ■
♦
•
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
■
!♦
i 1
0
2
4
6
8
10
12
14
1
■
♦ ■
♦
•
• ■
♦
•
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
2.5
2 1
♦ ■
♦
•
Z
♦ ■
♦
•
s �
s
f
1
♦ ■
A.
•
• ■
♦
•
1
> 2.0 -�
Iv
E 1.5 —
f6 1.0
0.5
12:00
Salinity(PSU), Dissolved Oxygen (mg/L) & :i.
0
2
4
6
8
Yp
12
14
• ■
♦
•
• ■
♦
•
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
L
•
• ■
♦
•
♦ ■
♦
•
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
■
,
•
♦ ■
L
•
■
♦
•
•
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

Cape Fear Upriver CTD Cast Data Down Casts only
Salinity � pH ■Dissolved Oxygen
Transect 1 Transect 2 Transect 3
Round 9 20180725 163741 Round 9 20180725 164440
Temperature (°C) Temperature (°C)
25 25.5 26 26-5 21 27.5 28 28.5 29 29.5 30 25 25.5 2" 26.5 27 275 28 28.5 29 29.5 30
0
2
4
6
8
10
1z
14
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
0
2
4
6
8
10
12
14
1
l
♦ ■
♦
•
♦ ■
♦
•
♦ ■
•
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
■
•
f♦
i 1
!►
Z
—ervl p ers- Ire
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L)& PH Salinity (PSU), Dissolved Oxygen (mg/L)& PH
Round 10 20180725 171036 Round 10 20180725 171834 Round 10 20180725 172638
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25-5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
g
10
1z
14
• ■
♦
•
• ■
♦
•
♦ ■
•
•
♦ ■
• ■
♦
•
• ■
♦
•
A
i
i 1
t
t
0
2
4
6
8
10
12
14
1
♦ ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& pN
2.5 Water Level
v
2.0
E 1.5
f6 1.0
0.5
12:00 13:00 14:00 15:00 16:00 17:00 18:00
7/25/2018
Salinity (PSU), Dissolved Oxygen (mg/L)& pli
19:00 20:00 21:00 22:00 23:00 0:00

Cape Fear Upriver CTD Cast Data Down Casts only
*Salinity ,� p IH ■ Dissolved Oxygerl er-I p erature
Transect 1 Transect 2 Transect 3
Round 11 20180725 174008 Round 11 20180725 175656
Temperature (oQ Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
i
:I
• ■
♦ ■
. •
♦ •
ON
♦ ■
• ■
: :
♦ •
♦ •
♦ ■
♦ ■
♦ •
♦ •
D
2
4
6
8
10
12
14
..
•
■
♦ ■
1
•
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Round 12 20180725 180805 Round 12 20180725 181458 Round 12 20180725 182347
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
■ •
■
::
■ ♦
•
1
• ■ ♦
•
0
2
4
6
s
1p
12
14
.
.
♦ ■
♦
•
♦ ■
♦ ■
♦
♦
•
•
Z 1
0
2
4
6
8
10
12
14
■
::
1
t
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
2.5
v
2.0
E 1.5
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Salinity (PSU), Dissolved Oxygen (mg/L)& pN
Water Level
13:00 14:00 15:00 16:00 17:00 18:00
7/25/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
19:00 20:00 21:00 22:00 23:00 0:00

Cape Fear
Upriver CTD
Cast Data
Down Casts only
*Salinity � . Dissolved oxyger1
� � em p erature
Transect 1
Transect 2
Transect 3
Round 13 20180725 183527
Round 13
20180725 184239
Round 13 20180725 185117
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
29 29.5 10
25 25.5 2"
Temperature (°C)
26.5 27 27.5 28
28.5 29 29.5 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
e
10
12
14
i 1
A
i
• ■
•
♦ ■
•
•
• ■
♦
•
•
♦
•
■■
■
A
• ■
♦
•
♦ ■
•
•
0
2
4
6
s
1p
12
14
♦ ■ ►
•
• ■ •
•
♦ ■ ►
•
• ■ •
•
1 t
0
2
4
6
8
10
12
14
0
1
• ■
♦
•
♦ ■
•
•
♦ ■
♦
•
♦ ■
♦
•
• ■
i
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/Li & pH Salinity (PSU), Dissolved Oxygen (mg/L)& p0 Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Round 14 20180725 190546 Round 14 20180725 193516 Round 14 20180725 194613
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
a
10
12
14
• ■
♦
•
• ■
♦
•
♦ ■
•
•
♦ ■
♦
•
0
1
• ■
•
•
• ■
•
•
♦ ■
►
•
0
2
4
6
8
10
12
14
♦ ■
•
•
2 1
♦ ■
♦
•
• ■
♦
•
♦ ■
♦
•
0
2
4
6
8
10
12
14
• I:
♦ ■
i
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
2.5
> 2.0 -�
lv
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

Cape Fear Upriver CTD Cast Data Down Casts only
*Salinity � p IH ■ Dissolved Oxygerl er-I p erature
Transect 1 Transect 2 Transect 3
Round 15 20180725 200201 Round 15 20180725 200830 Round 15 20180725 201824
Temperature (oQ Temperature ('Q Temperature (oC)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 10 25 25.5 2i; 76.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
i
i
• ■
♦
•
0
2
4
6
8
10
12
14
0 A
• ■ ♦
•
4
i 1 �
s �:
:
• ■ ♦
•
0
2
4
6
a
10
12
14
s �r
t
♦ ■ ♦
•
• ■ •
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 16 20180725 202636 Round 16 20180725 203326 Round 16 20180725 204524
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 10 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
0
2
4
6
$
10
12
14
t f
�
•M
M
•
MM
M
0
2
4
6
10
12
14
■
•
s �
:
•
• r
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
2.5
> 2.0 -�
Iv
E 1.5 —
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

Cape Fear Upriver CTD Cast Data Down Casts only
Salinity ,� pIH ■ Dissolved Oxygerl ervlperature
Transect 1 Transect 2 Transect 3
Round 17 20180725 205909 Round 17 20180725 210640 Round 17 20180725 211536
Temperature (°C) Temperature (°C) Temperature CC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
1z
14
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/Li & pH Salinity (PSU), Dissolved Oxygen (mg/L)& PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 18 20180725 212731 Round 18 20180725 213607 Round 18 20180725 214639
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
• ■ ♦
•
• ■ ►
•
! I
i
♦ ■ ♦
•
■
•
t+ *♦
♦
♦ ■► •
0 1 •
♦ ■ ♦ •
• ■ ♦ •
♦ ■ ► •
0
2
4
6
8
10
12
14
0
2
4
fi
8
10
12
14
• 1 1
♦ ■ ♦
•
• 1 A
Z 1 L
i It
•
i
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♦ ■ ♦
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S •
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A
0
• ■ ♦
•
01
•
0A
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
2.5
> 2.0 -�
v
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
Salinity (PSU), Dissolved Oxygen (mg/L)& pli
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

Cape Fear Upriver CTD Cast Data Down Casts only
Salinity ,� pIH ■ Dissolved Oxygerl ervlperature
Transect 1 Transect 2 Transect 3
Round 19 20180725 215709 Round 19 20180725 220500 Round 19 20180725 221314
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
l0
12
14
• ■►
•
♦ ■►
•
♦ ■L
•
♦ ■►
•
• ■►
•
• ■►
•
• f S
•
0
2
4
6
8
10
12
14
i
::
:
• ■ L
•
♦ ■ ♦
•
t
0
2
4
6
8
10
12
14
2 , A
: ii
:
• ■ ►
•
• ■ L
•
♦ ■ ♦
•
• ■ ♦
•
• ■ ♦
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•
• ■ ♦
•
♦ ■ ♦
•
1
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/Li & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 20 20180725 222302 Round 20 20180725 223255 Round 20 20180725 224435
Temperature (oC) Temperature (oC) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
_ !:
■
♦ ■
..
..
♦ ■ ♦
•
• ■ ►
•
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♦ ►
■ ►
•
•
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
2.5
> 2.0 -�
v
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L)& PH
0
2
4
6
8
Yp
12
14
• ■ ►
2 �2
•
i
♦ ■ ♦
•
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
: r:
s
■
■ ►
i ii
�
! 0 t
!
1
Salinity (PSU), Dissolved Oxygen (mg/L) & :i.
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

Cape Fear
Upriver CTD
Cast Data
Down Casts only
*Salinity � . Dissolved oxyger1
� � em p erature
Transect 1
Transect 2
Transect 3
Round 21 20180725 225324
Round 21
20180725 225951
Round 21 20180725 230734
Temperature (°C)
25 25.5 26 26-5 27 27.5 28 28.5
29 29.5 30
25 25.5 2"
Temperature ('Q
26.5 27 27.5 28
28.5 29 29.5 30
Temperature (°C)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 22 20180725 231612 Round 22 20180725 232332 Round 22 20180725 232957
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
e
1D
12
14
i 1
♦ ■ ♦
•
♦ 1 ♦
•
i
0
7 i
• ■ ♦
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♦ ■■ ♦
•
•
;
O
2
4
6
8
10
12
14
i 1t
1
I
• ■
A.
•
I
A
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
2.5
2
,
S 0
i
• ■
•
•
i 1
r
}
> 2.0 -�
v
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
0
2
4
6
8
10
12
14
}
• ■ ♦
•
• ■ ♦
•
• ■ ♦
•
Salinity (PSU), Dissolved Oxygen (mg/L) & pN
Water Level
}
♦
♦ ■ A
♦ ■ ♦
•
•
• ■ ♦
s �:
•
:
Salinity (PSU), Dissolved Oxygen (mg/L) &
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

2.5 —
2.0 —
v
E
1.5 —
f6
1.0
0.5
12:00
Cape Fear Upriver CTD Cast Data
Transect 1 Transect 2
Water Level
Down Casts only
Salinity A- pIH ■ DissoIved Oxygen emperature
Transect 3
Round 23
20180725 235100
Temperahue (°Q
25
25.5
26 26-5 27 27.5 28
2&5
29 29.5 30
0
2
0
2
I
•
4
1
i
i
♦
■
♦
•
e
10
12
14
0 1
2 3 4 5 6
7
8 9 10
Salinity (PSU), Dissolved oxygen (mg/L) & pH
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00
7/25/2018

Appendix I-H
Upstream Site
CTD Profiles — Recovery

Cape Fear Upriver CTD Cast Data
Transect 1 Transect 2
Down Casts only
Salinity p - A Disso ved C-x Qeri
Transect 3
Temperature
Round 26 20180823 114611
Round 26 20180823114956
Round 26 20180823115320
Temperature (°C)
Temperature (T)
Temperature (°C)
25
25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
25
25.5 2i; 26.5 27 27_5 28 28.5 29 29.5 30
25
25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
0
0
• ■ A
• ■
• ■ A
• ■ .
• ■
2
♦
2
2
• ■
• ■ ♦
• ■
• ■ A
• ■ ♦
• ■ •
• ■
4
4
A
4
• ■ A
• ■
A,• ■
• ■
• ■ ♦
• ■ A
• ■
6
6
• ■ A
6
1
• ■
8
$
S
10
10
10
12
14
12
14
12
14
0 1 2 3 4 5 6 7 8 9 10
0 1 2 3 4 5 6 7 8 9 10
0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (rng/L) & pH
Salinity PSIi ,Dissolved Oxygen m L & pH
Salinity PSU ,Dissolved Oxygen rng L & uH
2.0
d
v
E 1.5
I
1.0 4-
11:00
12:00
Water Level
13:00 14:00 15:00
8/23/2018

0
z
4
6
8
10
12
14
Cape Fear Upriver CTD Cast Data *Salinity
Transect 1 Transect 2
Round 27 20180823120126 Round 27 20180823120507 Round 27
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 )9 29.5 30 25 25.5 2i, 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5
•
■
•
■
0
2
4
6
8
10
12
14
•
■
•
■
•
•
■
•
■
a
0
z
4
6
8
10
12
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1
Salinity (PSU), Dissolved Oxygen (mg/1-) & of -I Salinity (PSU), Dissolved Oxygen (mg/L)& vH
Round 28 20180823 121921 Round 28 20180823 122310 Round 28
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5
0
z
4
6
8
10
12
14
•
■
•
•
■
L
•
■
a
0
2
4
6
8
10
12
14
•
■
1
•
■
•
0
z
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1
Salinity (PSU), Dissolved Oxygen (mg/L) & nl-i Salinity (PSU), Dissolved Oxygen (mg/L)& e11
2.0
d
Water Level
v
E 1.5
m
1.0
11:00 12:00 13:00
8/23/2018
Down Casts only
p A Disso ved C-x Y Qerl Temperature
Transect 3
14:00 15:00

Cape Fear
Upriver CTD
Cast Data
own
- Diss oasts °nay
Salinity � �;��o ..rred I���:.Y Temperature
� a��l
Transect 1
Transect 2
Transect 3
Round 29 20180823 123420
Round 29
20180823 123827
Round 29 20180823 124129
Temperature (DC)
25 25.5 26 26.5 27 27.5 28 28.5
)9 29.5 30
25 255 2i,
Temperature (°C)
26.5 27 27.5 28
28.5 29 29.5 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
10
12
14
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
0
2
4
6
8
10
12
f
■
♦
•
■
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & aH Salinity PSU ,Dissolved Oxygen mg L & pH Salinity (PSU), Dissolved Oxygen mg L & ul i
Round 30 20180823124934 Round 30 20180823125332 Round 30 20180823125615
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
1p
12
14
•
■
AA
•
■
•
■
•
■
•
■
0
2
4
6
1p
12
14
•
■
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
0
2
4
6
10
12
14
•
■
•
■
•
■
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen m L & 94
2.0
d
Water Level
v
E 1.5
m
1.0
11:00 12:00 13:00
8/23/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & aH
14:00 15:00

Cape Fear
Upriver CTD
Cast Data
Salinity - Down oasts only
p
Transect 1
Transect 2
Transect 3
Round 31 20180823130448
Round 31
20180823130843
Round 31 20180823131146
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
29 29.5 30
25 25.5
Temperature (°C)
26.5 27 275 28
28.5 29 295 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
•
■
•
■
•
■
•
■
•
■
1
•
■
•
■
A
•
•
■
■
0
2
4
6
a
10
12
14
•
•
■AA
■
•
■
•
•
■
■
1
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinky (PSU), Dissolved Oxygen (mg/L) & PH Salinity) g/ ) (PSU), Dissolved Oxygen [ Ox en m L & PH Salinity (PSU), Dissolved Oxygen mg L & ci i
Round 32 20180823 132004 Round 32 20180823 132352 Round 32 20180823 132643
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
•
■
•
■
•
•
■
■
A
U
2
4
6
8
10
12
14
t
�
:
•
•
•
■
■
■
a
•
•
■
■
•
■
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & uH
2.0
d
Water Level
Jrrr. rrr. E
v
E 1.5
m
1.0
11:00 12:00 13:00
8/23/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & ul
14:00 15:00

0
2
4
6
10
12
14
Cape Fear Upriver CTD Cast Data *Salinity
Transect 1 Transect 2
Round 33 20180823133431 Round 33 20180823 133825 Round 33
Temperature (°[) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26
•
■
L
•
■
L
•
■
L
0
2
4
6
$
1p
12
14
•
•
•
■
■
■
s
A
•
•
■
■
L
L
O
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2
Salinity (PSU), Dissolved Oxygen (mg/L) & v1-I Salinity (PSU), Dissolved Oxygen (mg/L) & vH
Round 34 20180823135051 Round 34 20180823135451 Round 34
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26
0
2
4
6
8
10
12
14
0
•
■
0
2
4
6
8
10
12
14
f
•
■
r
•
■
a
I
t
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 1Q Q 1 2 3 4 5 6 7 8 9 10 1 0 1 2
Salinity (PSU), Dissolved Oxygen (mg/L) & u1I Salinity (PSU). Dissolved Oxygen (mg/L)& PH
2.0
d
Water Level
v
v
E 1.5
m �
Down Casts only
p A Disso ved C-x Y Qerl Temperature
Transect 3
1.0 '
11:00 12:00 13:00 14:00 15:00
8/23/2018

0
2
4
6
8
10
12
14
Cape Fear Upriver CTD Cast Data ♦Salinity
Transect 1 Transect 2
Round 35 20180823140743 Round 35 20180823 141147 Round 35
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 )9 29.5 30 25 25.5 _i; 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26
t
i
•
■
AA
•
■
AA
•
■
0
2
4
6
8
10
12
14
•
■
A
•
■
•
■
1
■
1
0
2
4
6
8
10
12
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 S 9 10 0 1 2
Salinity (PSU), Dissolved Oxygen (mg/L) & off Salinity (PSU), Dissolved Oxygen (mg/L)& nH
Round 36 20180823 143242 Round 36 20180823 143632 Round 36
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 76.5 27 275 28 28.5 29 29.5 30 25 25.5 26
O
2
4
6
8
10
12
14
•
■
l
•
■
•
■
•
■
0
2
4
6
8
10
12
14
•
r
•
■
•
■
•
■
•
■
•
■
•
■
0
2
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 S 9 10 I 0 1 2
Salinity (PSU), Dissolved Oxygen (mg/L) & of-i Salinity (PSU), Dissolved Oxygen (mg/L) & off
2.0
d
Water Level
v
E 1.5
m
1.0
11:00 12:00 13:00
8/23/2018
Down Casts only
p A Disso ved C-x Y Qerl Temperature
Transect 3
14:00 15:00

Cape Fear
Upriver CTD
Cast Data
- Down oasts only
Salinity
p
Transect 1
Transect 2
Transect 3
Round 37 20180823 144903
Round 37
20180823 145256
Round 37 20180823 145539
Temperature (°[)
25 25.5 26 26.5 27 27.5 28 28.5
)9 29.5 30
25 25.5
Temperature (°C)
26.5 27 275 28
28.5 29 29.5 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
S
1p
12
14
•
■
1
O
2
4
6
8
1p
12
14
0
2
4
6
8
10
12
14
•
■
a
•
■
a
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity) g/
(PSU), oxygen ( en m L & 9H Salinity (PSU), Dissolved Oxygen mg L & pH
Round 38 20180823150455 Round 38 20180823150859 Round 38 20180823151143
Temperature (°C) Temperature (°C) Temperature (°[)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 10 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
s
1p
12
14
!
r
it
•
■
•
■
1
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
•
■
r
f
•
■
•
■
•
■
•
■
•
■
•
■
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH
2.0
d
Water Level
v
E 1.5
m
1.0
11:00 12:00 13:00
8/23/2018
14:00
Salinity (PSU), Dissolved Oxygen (mg/L) & off
15:00

Cape Fear
Upriver CTD
Cast Data
own
- Diss oasts only
Transect 1
Transect 2
Transect 3
Round 39 20180823152051
Round 39
20180823152405
Round 39 20180823 152706
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
)9 29.5 30
25 25.5 _i;
Temperature (°C)
26.5 27 27.5 28
28.5 29 29.5 30
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
•
■
a
•
■
A
•
■
•
r
•
0
2
4
6
s
10
12
14
�
■
a
•
■
A
•
■
A
•
■
1
0
2
4
6
8
10
12
14
•
■
a
•
■
a
•
■
a
•
■
A
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & eH Salinity (PSU), Dissolved Oxygen (mg/L) & nH Salinity (PSU), Dissolved Oxygen (mg/L) & u1I
Round 40 20180823153520 Round 40 20180823153911 Round 40 20180823154146
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
g
10
12
14
•
■
!
•
■
•
■
f
•
■
f
•
■
f
•
■
0
2
4
6
10
12
14
•
■
f
0
2
4
6
10
12
14
•
■
A
•
■
a
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & u1I Salinity (PSU), Dissolved Oxygen (mg/L)& uH
2.0
d
Water Level
v
E 1.5
m
1.0
11:00 12:00 13:00
8/23/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & o, -i
14:00 15:00

Cape Fear Upriver CTD Cast Data
Transect 1 Transect 2
Round 41 20180823155127 Round 41 20180823155450
Temperature (°[) Temperature ('Q
25 25.5 26 26.5 27 27.5 28 28.5 )9 29.5 30 25 25.5 26.5 27 27.5 28 28.5 29 29.5 30
0
0
2
• ■ ♦
• ■
2
4
• ■
• ■
• ■ ♦
4
6
• ■
A
6
• ■
10
1p
12
12
14
14
•
•
■
■
a
1
•
■
a
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & off Salinity PSU ,Dissolved Oxygen m L & 9H
Round 20180823 155100
Temperature (°[)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
dO
i♦
2
4
6
$
1p
12
14
0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & off
2.0
d
Water Level
v
E 1.5
m
1.0
11:00 12:00 13:00 14:00
8/23/2018
Down Casts only
[`
Transect 3
15:00
er-lperc _ure

Appendix 1-1
Upstream Site
Water Levels

1.2
0.8
0.6
00
00
00.4
Q
z
0
-,0.2
v
U
C
N
0
CC
N
J-0.2
W
�a
�:-0.4
-0.6
-0.8
-1
Upstream Water Level Referenced to NAVD 88
1
8�18 J'/18 ��'j8 i1�1 i1�1 ��18 ,�18 18
1�0 1.0 1.0 ?�O ?00 Z.0 1.0 1.0
Axis Title

APPENDIX II
Downstream Site

Appendix II -A
Downstream Site
Longterm Current Measurements

0
a�
2
c) 4
0 6
a�
t 8
Q
Qi
E 0
m
2
04
0 6
FD
t 8
a
a�
120
90
F- 60
U
30
0
360
N 270
a�
180
a�
90
0
Jun 27
Cape Fear River Current and Water Quality Study - Downstream ADCP: June 27, 2018 - July 28, 2018
Current Magnitude (cm/s)
Jul 02
U�nIUslUIjI
MEO• • • • ' •
UNIT
Ito
Depth Average current Magnitude
Depth Average current Direction (toward, d
Jul 07 Jul 12 Jul 17
Time (Days - UTC)
• I'• I I I I I I I I
Jul 22
Jul 2i
120
90
60
30
0
360
270
180
90
0

Cape Fear River Current and Water Quality Study - Downstream ADCP: July 27, 2018 - August 27, 2018
�0
a)
,M 2
cn 4
0 6
a�
t 8
Q
Q)
E0
v
2
04
0 6
a�
t 8
a
a�
120
90
F- 60
U
30
0
360
N 270
N
180
N
90
0
Jul 27
Jnl� UOn000�UUnnI9IGld1u1���'�'0����'n��'19'!'1910�UIUI
Deptn Average current magnitude
Depth Average current Direction (toward, deg f)
yw se r i�.i w ti r'1 r a s +�� i• �; i'; t► ti±� l• 1; +� ar !k N # r. r;
nl .i •� i. w nr ,.4 .r wi wA M +w ri �w .� :�t •.r La i.{1.+ r•�r+r w! •w• ..� r1 � '"'i � �'! w.j .: y r.f :•s ..i ,� ��.�% � n"�'� �"` pt s.i i{!.1 w�i.
•
I I I I' 'I I♦ I �I I I I I I I• I I I r I I I• I I •I I I I I I I
Aug 01
Aug 06 Aug 11 Aug 16
Time (Days - UTC)
Aug 21
Auq 26
120
90
60
30
0
360
270
180
90
0

Cape Fear River Current and Water Quality Study - Downstream ADCP: June 27, 2018 - July 28, 2018
E0
`L 2
U) 4
6
L_
a8
N
E0
`L 2
U) 4
6
L_
a8
N
E0
2
4
6
L
Q8
N
0
2
U) 4
6
L_
Q8
N
15
7.5
V)
E 0
U
-7.5
-15
Jun 27
Jul 02
Vertical Velocity (cmis)
+*Owl
rror Velocities ( mis)
on (coynts)
Average
Average Vertical Velocity (cm/s)
Jul 07 Jul 12 Jul 17
Time (Days - UTC)
Jul 22
5
Jul 2i

Cape Fear River Current and Water Quality Study - Downstream ADCP: July 27, 2018 - August 27, 2018
-0
2
U) 4
6
L
a8
CD
E0
`L 2
U) 4
M
L_
a8
E0
2
4
6
L
Q8
N
0
2
U) 4
6
L_
Q8
CD
15
7.5
V)
E 0
U
-7.5
"."6."L "LAALALAL.&jL.AAL,&,&k&AA&AAAAL"I"AALAAaALAAL.AJL.A'L&&&A"AiAA
"LAAL L<LAl<A
------------------------------
-15
Jul 27
Aug 01 Aug 06
on (coynts
Average vertical velocity (cmis)
Aug 11
Time (Days - UTC)
Aug 16 Aug 21 Auq 26

Appendix II-6
Downstream Site
Auxiliary Data

7
8
E 9
10
11
30
29.25
U
28.5
27.75
27
8
3.75
-0.5
-4.75
-9
360
270
180
90
0
Jun 27
Cape Fear River Current and Water Quality Study - Downstream ADCP: June 27, 2018 - July 28, 2018
Water Over Instrument
Jul 02
I em
Pitcn (Lime) and Roll
Maul
I
Jul 07 Jul 12 Jul 17
Time (Days - UTC)
Jul 22
Jul 27

7
8
E 9
10
11
30
29
U
m 28
27
no
1
m -2
a
-5
-8
360
270
cm
a 180
90
Cape Fear River Current and Water Quality Study - Downstream ADCP: July 27, 2018 - August 27, 2018
Water Over Instrument
Temperature
Pitcn (blue) ana K011
Maul
0
Jul 27 Aug 01 Aug 06 Aug 11 Aug 16 Aug 21 Aug 26
Time (Days - UTC)

Appendix II-C
Downstream Site
Longterm Water Quality Measurements

40
35
30
20
M
0 4-
7/18/18
7/19/18 7/20/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
Downriver
7/21/18 7/22/18 7/23/18
ODO mg/L pH
Dotted Lines = Bottom Instrumentation
7/24/18
•••••• Water over Sensor (m)
Vertical Line = CTD Profile
16
14
E
12 0
a)
m
8 o6
6
4
2
--+ 0
7/25/18
0

40
35
30
3
h
25
M
N
as
u 20
10
A
0
7/25/18
16
14
E
12 0
a)
m
8
a
J
w
E
6 �
a,
00
x
x
O
d
4 0
0
2
0
7/26/18 7/27/18 7/28/18 7/29/18 7/30/18 7/31/18 8/1/18
Temp °C Sal psu ODO mg/L pH
Solid Lines = Surface Instrumentation Dotted Lines = Bottom Instrumentation
•••••• Water over Sensor (m)
Vertical Line = CTD Profile
0

40
35
30 -
20
Item
M
Downriver
•'• ':• •.~ • may••
i
0
8/1/18
8/2/18 8/3/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
8/4/18 8/5/18 8/6/18
ODO mg/L pH
Dotted Lines = Bottom Instrumentation
8/7/18
'•'•'• Water over Sensor (m)
Vertical Line = CTD Profile
16
14
E
12 0
10
a
a,
0
a)
m
8 o6
6
4
2
0
8/8/18
0

40
35
30 -
20
ONE
M
0
8/8/18
Downriver
i
4
s
8/9/18 8/10/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
8/11/18 8/12/18 8/13/18
ODO mg/L pH
Dotted Lines = Bottom Instrumentation
8/14/18
•••••• Water over Sensor (m)
Vertical Line = CTD Profile
16
14
E
12 0
GJ
m
8 0a
2
0
8/15/18
0

40
35
30
3
25
4
c
N
otS
u 20
IEI]
J
Downriver
oo
A _V.O
• 1 •• •
• I o o, o-o o
•Y'
•
o.o o
'
S I
I
- I I
0
8/15/18
8/16/18 8/17/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
8/18/18 8/19/18 8/20/18
ODO mg/L pH
Dotted Lines = Bottom Instrumentation
8/21/18
•••••• Water over Sensor (m)
Vertical Line = CTD Profile
16
14
E
12 0
10 a
a,
0
a)
m
8 o6
6
4
2
0
8/22/18
0

40
35
30
u 20
10
A
0
8/22/18
8/23/18 8/24/18
Temp °C Sal psu
Solid Lines = Surface Instrumentation
8/25/18 8/26/18 8/27/18
ODO mg/L pH
Dotted Lines = Bottom Instrumentation
8/28/18
•••••• Water over Sensor (m)
Vertical Line = CTD Profile
16
14
E
12 0
a)
m
8 o6
6
4
2
0
8/29/18
J
E
c
a,
00
x
x
O
d
0
0

Appendix II-D
Downstream Site
Vessel -mounted ADCP Current Survey

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
100
75
N
E 50
25
0
Ship Sid r.t Cape Fear River Current and Water Quality Study: Transept S-1 - Flood Tide - July 26, 2618
Track Measurement Time: 12:25 - 12:26 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.8m S
0 20 40
Start
60 80
Distance Traveled (m)
01-If
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
L 7
10
13
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Flood Tide - July 26, 2618
Track Measurement Time: 12:33 - 12:35 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
S
100
75
50
25
0
S
i
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.3m
100
�V
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
H
180 �
0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
14
100
NO
N
E 50
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-3 - Flood Tide - July 26, 2618
Track Measurement Time: 12:56 - 12:52 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.8m
25............................................ .........
0
0 20 40
Start
60 80
Distance Traveled (m)
01-If,
itzi
H
180 �
'0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
100
75
N
E 50
25
0
Ship Sid 5 Cape Fear River Current and Water Quality Study: Transept S-1 - Flood Tide - July 26, 2618
Track Measurement Time: 13:13 - 13:14 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) $
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.8m
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-2 - Flood Tide - July 26, 2618
Track Measurement Time: 13:21 - 13:23 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
S
100
75
50
25
0
S
i
■MEN&- 17�
OWN-
maw—
❑epth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 11 m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
3.5
n5 6
a�
8.5
11
1
3.5
L_ 6
Q
N
8.5
11
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-3 - Flood Tide - July 26, 2618
Track Measurement Time: 13:31 - 13:33 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.8m
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
100
75
N
E 50
25
0
Ship Si Cape Fear River Current and Water Quality Study: Transept S-1 - Flood Tide - July 26, 2618
Track Measurement Time: 13:42 - 13:44 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.8m S
0 20 40
Start
60 80
Distance Traveled (m)
01-I
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-2 - Flood Tide - July 26, 2618
Track Measurement Time: 13:52 - 13:54 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.3m S
0 20 40
Start
60 80
Distance Traveled (m)
01-I
itzi
180 �
0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-3 - Flood Tide - July 26, 2618
Track Measurement Time: 14:62 - 14:64 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.8m S
0 20 40
Start
60 80
Distance Traveled (m)
01-I
itzi
180 �
0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
14
100
NO
N
E 50
25
0
Ship Sid 5 Cape Fear River Current and Water Quality Study: Transept S-1 - Flood Tide - July 26, 2618
Track Measurement Time: 14:15 - 14:17 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.8m
0 20 40
Start
60 80
Distance Traveled (m)
01-If,
itzi
H
180 �
'0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Slack Tide - July 26, 2618
Track Measurement Time: 14:25 - 14:28 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
r mmmm� mmmmm�-
f
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.5m
100
�V
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
360
itzi
H
180 �
'0
100 120
End

1
3.5
n5 6
a�
8.5
11
1
c 3.5
C
5 6
8.5
11
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2918
Track Measurement Time: 14:37 - 14:39 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
S
100
75
50
25
0
S
------------------------------------
i
i-
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.8m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2618
Track Measurement Time: 14:52 - 14:53 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.5m
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Shipp Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2618
Track Measurement Time: 15:62 - 15:64 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 11 m
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
100
75
N
E 50
25
0
Shipp Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2618
Track Measurement Time: 15:14 - 15:16 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.8m
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2618
Track Measurement Time: 15:36 - 15:32 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
77777�
0
Current Direction (deg T) S
i
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.5m
100 i
NO
N
E 50
25
0
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
H
180 �
0
100 120
End

1
3.8
n5 6.5
a�
9.3
12
1
3.8
n5 6.5
a�
9.3
12
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2918
Track Measurement Time: 15:39 - 15:41 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
L
75
50
- 25
777�-- 0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 10.8m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
3.5
n5 6
a�
8.5
11
1
3.5
n5 6
a�
8.5
11
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2918
Track Measurement Time: 15:49 - 15:51 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
- 50
25
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.8m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2918
Track Measurement Time: 16:99 - 16:1 1 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.3m
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2618
Track Measurement Time: 16:21 - 16:23 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 11 m
100 i
NO
N
E 50
0
25....................................................................
0
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
01-if
itzi
H
180 �
'0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2618
Track Measurement Time: 16:32 - 16:34 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.5m
100 i
NO
N
E 50
0
25........................................:..........................................
0
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-if
itzi
H
180 �
'0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2618
Track Measurement Time: 16:51 - 16:52 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
360
270
180
90
0
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.3m
100 i
NO
N
E 50
25
0
0 20 40
Start
60 80
Distance Traveled (m)
S
360
itzi
H
180 �
0
100 120
End

1
3.8
n5 6.5
a�
9.3
12
1
3.8
n5 6.5
a�
9.3
12
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2618
Track Measurement Time: 17 :63 - 17 :65 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 10.5m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
3.5
n5 6
a�
8.5
11
1
3.5
n5 6
a�
8.5
11
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2618
Track Measurement Time: 17 :17 - 17 :26 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.3m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2618
Track Measurement Time: 17 :46 - 17 :48 UTC (# Ensembles Averaged: 3)
N En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.8m
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
4
n
7
0
10
13
1
4
n5 7
a�
10
13
Ship "e: Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2918
Track Measurement Time: 17 :56 - 17 :59 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 11 m
100 i
NO
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
H
180 �
0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2618
Track Measurement Time: 18:66 - 18:68 UTC (# Ensembles Averaged: 3)
En
Current Magnitude (cm is} S
100
75
50
25
oil 0
Current Direction (deg T) S
360
270
180
90
0
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.3m S
100
�V
N
E 50
0
25 .......................................................................
......
0
0 20 40
Start
01-I
itzi
H
180 �
0
60 80 100 120
Distance Traveled (m) End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2618
Track Measurement Time: 18:22 - 18:23 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.8m
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
3.8
n5 6.5
a�
9.3
12
1
3.8
n5 6.5
a�
9.3
12
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2618
Track Measurement Time: 18:34 - 18:36 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
i
50
25
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 10.5m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
3.5
n5 6
a�
8.5
11
1
3.5
n5 6
a�
8.5
11
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2618
Track Measurement Time: 18:43 - 18:45 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
� 75
Z
50
25
:71 0
Current Direction (deg T) S
360
270
180
90
0
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9m
100 i
NO
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
S
360
itzi
H
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Ship 0-: Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2918
Track Measurement Time: 19:93 - 19:94 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
_ 75
50
25
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.5m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
3.8
n5 6.5
0
9.3
12
1
3.8
n5 6.5
a�
9.3
12
100
75
N
E 50
25
0
Ship 'e: Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2918
Track Measurement Time: 19:13 - 19:15 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
r�
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 10.8m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
3.5
n5 6
a�
8.5
11
1
3.5
n5 6
a�
8.5
11
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2918
Track Measurement Time: 19:22 - 19:24 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9m
100 i
NO
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
360
itzi
H
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2918
Track Measurement Time: 19:37 - 19:39 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.5m
100 i
NO
N
E 50
0
25...................................................................................
0
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-if
itzi
H
180 �
'0
100 120
End

1
3.8
n5 6.5
0
9.3
12
1
3.8
n5 6.5
a�
9.3
12
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2918
Track Measurement Time: 19:49 - 19:51 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
360
270
180
90
0
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 10.3m
100 i
NO
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
S
360
itzi
H
180 �
0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
�V
N
E 50
0
Ship "": Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2918
Track Measurement Time: 19:58 - 29:91 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
360
270
180
90
0
V Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9m S
25 ................................................................................
0
0 20 40
Start
01-I
itzi
H
180 �
0
60 80 100 120
Distance Traveled (m) End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
Ship ` Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2618
Track Measurement Time: 26:18 - 26:26 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
360
270
180
90
0
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.8m
100 i
NO
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
S
360
itzi
H
180 �
0
100 120
End

1
3.8
6.5
a�
9.3
12
1
3.8
n5 6.5
a�
9.3
12
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2618
Track Measurement Time: 26:36 - 26:32 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 10m
100 i
NO
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
360
itzi
H
180 �
0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2918
Track Measurement Time: 29:39 - 29:41 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
r
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9m
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2618
Track Measurement Time: 26:53 - 26:55 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.8m
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
3.8
n5 6.5
a�
9.3
12
1
3.8
n5 6.5
a�
9.3
12
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2618
Track Measurement Time: 21:61 - 21:63 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 10m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
3.5
n5 6
a�
8.5
11
1
3.5
n5 6
a�
8.5
11
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Ebb Tide - July 26, 2918
Track Measurement Time: 21:99 - 21:12 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
- 100
75
50
� r
25
0
Current Direction (deg T) S
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9m
0 20 40
Start
60 80
Distance Traveled (m)
360
270
180
90
0
S
360
itzi
180 �
0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Ebb Tide - July 26, 2618
Track Measurement Time: 2 1:2 5 - 2 1:2 7 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12m
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
3.8
n5 6.5
a�
9.3
12
1
3.8
6.5
a�
9.3
12
Ship Cape Fear River Current and Water Quality Study: Transept S-2 - Ebb Tide - July 26, 2918
Track Measurement Time: 21:37 - 21:39 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 10.3m
100 i
NO
N
E 50
0
0 20 40
Start
60 80
Distance Traveled (m)
S
100
75
50
25
0
S
360
270
180
90
0
S
360
itzi
H
180 �
0
100 120
End

Ship S : Cape Fear River Current and Water Quality Study: Transept S-3 - Slack Tide - July 26, 2918
Track Measurement Time: 21:49 - 21:51 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
�J
100
NO
N
E 50
0
25........................................:..
0
0 20
Start
S
100
75
50
25
0
Current Direction (deg T) S
360
270
180
90
0
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.3m S
01-If,
itzi
H
180 �
40-� 60 80 100 120 0
Distance Traveled (m) End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
Ship S Cape Fear River Current and Water Quality Study: Transept S-1 - Flood Tide - July 26, 2618
Track Measurement Time: 22:62 - 22:63 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis) S
100
75
50
25
0
Current Direction (deg T) S
360
270
180
90
0
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.5m
100
�V
N
E 50
25
0
0 20 40
Start
60 80
Distance Traveled (m)
S
360
itzi
H
180 �
0
100 120
End

1
3.8
n5 6.5
a�
9.3
12
1
3.8
n5 6.5
a�
9.3
12
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-2 - Flood Tide - July 26, 2618
Track Measurement Time: 22:12 - 22:14 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 10.5m S
0 20 40
Start
60 80
Distance Traveled (m)
01-I
itzi
180 �
0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-3 - Flood Tide - July 26, 2918
Track Measurement Time: 22:27 - 22:29 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.5m S
0 20 40
Start
60 80
Distance Traveled (m)
01-I
itzi
180 �
0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-1 - Flood Tide - July 26, 2618
Track Measurement Time: 22:38 - 22:46 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
MORL.- =1
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.8m
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-If
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
0
Start
Ship : Cape Fear River Current and Water Quality Study: Transept S-2 - Flood Tide - July 26, 2618
Track Measurement Time: 22:56 - 22:52 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
i
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 11 m
40
60 80 100 120
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
'0
End

1
3.5
E
n5 6
a�
8.5
11
1
3.5
n5 6
a�
8.5
11
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-3 - Flood Tide - July 26, 2618
Track Measurement Time: 23:61 - 23:64 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.8m
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

Ship S Cape Fear River Current and Water Quality Study: Transept S-1 - Flood Tide - July 26, 2618
Track Measurement Time: 23:12 - 23:13 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
1
4.3
5 7.5
a�
10.8
14
Current Direction (deg T)
1
4.3
5 7.5
10.8
■
14
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.8m
100
�V
N
E 50
25
0
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
H
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-2 - Flood Tide - July 26, 2618
Track Measurement Time: 23:27 - 23:36 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 11 m
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
3.5
n
6
a�
8.5
11
1
3.5
n
6
a�
8.5
11
100
75
N
E 50
25
0
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Flood Tide - July 26, 2918
Track Measurement Time: 23:39 - 23:41 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 9.8m S
0 20 40
Start
60 80
Distance Traveled (m)
01-I
itzi
180 �
0
100 120
End

1
4.3
5 7.5
a�
10.8
14
1
4.3
5 7.5
a�
10.8
14
100
75
N
E 50
25
0
Ship ST Cape Fear River Current and Water Quality Study: Transept S-1 - Flood Tide - July 26, 2918
Track Measurement Time: 23:48 - 23:49 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 12.8m
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
4
n
7
a�
10
13
1
4
n5 7
a�
10
13
100
75
N
E 50
25
0
Ship : Cape Fear River Current and Water Quality Study: Transept S-2 - Flood Tide - July 26, 2618
Track Measurement Time: 23:56 - 23:58 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and ❑irection (deg T): Depths Averaged: 1 m - 11.3m
0 20 40
Start
60 80
Distance Traveled (m)
100
75
50
25
0
S
360
270
180
90
0
S
01-I
itzi
180 �
0
100 120
End

1
3.8
n5 6.5
a�
9.3
12
1
3.8
n5 6.5
a�
9.3
12
100
75
N
E 50
25
O
Ship Cape Fear River Current and Water Quality Study: Transept S-3 - Flood Tide - July 27, 2618
Track Measurement Time: 66:64 - 66:66 UTC (# Ensembles Averaged: 3)
En Current Magnitude (cmis)
Current Direction (deg T)
Depth Averaged Current Magnitude (cmis) and Direction (deg T): Depths Averaged: 1 m - 1 Om S
O 20 40
Start
60 80
Distance Traveled (m)
01-I
itzi
O
100 120
End

Appendix II-E
Downstream Site
Discharge Measurements

Downstream Discharge from Vessel Mounted ADCP Transects
600
400
m 200
E
v
L
U
0 0
0
-200
-400
-600 '
261cP1
�6/l`Q1
�6/l`fl1
lcP1 41
l`P>
�0 ?0 �0 60
�O
�0
?0
00
O O O O
O
O
0
S-1
S-2
f S-3

Appendix II-F
Downstream Site
CTD Profiles — Deployment

U
2
4
6
8
10
12
14
Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity � p I I�-x.Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 1 20180718 140406 Round 1 20180718 140918 Round 1 20180718 141612
Temperature (OC) Temperature (OC) Temperature (OC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 2" 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
AA
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0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (P5U), Dissolved Oxygen (mg/L) & pH
Round 2 20180718 144120 Round 2 20180718 143436 Round 2 20180718 143711
Temperature (OC) Temperature (°C) Temperature (OC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
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0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
Salinity (P5U), Dissolved Oxygen (mg/L) & pH
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Water Level
8.0
14:00 15:00 16:00 17:00
7/18/2018
Salinity (P5U), Dissolved Oxygen (mg/L) & pH
18:00 19:00 20:00

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity � p I I�-x.Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 3 20180718 145153 Round 3 20180718 144511 Round 3 20180718 144743
Temperature (oQ Temperature (oC) Temperature (oC)
25 25.5 21> 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 76.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
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4
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0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 4 20180718 150121 Round 4 20180718 145502 Round 4 20180718 145738
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
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10.5
d 10.0
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9.0
m
3: 8.5
8.0 +-
14:00
Salinity (PSU), Dissolved Oxygen (mg/L) & :H
Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Water Level
15:00 16:00 17:00
7/18/2018
18:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
19:00
20:00

0
2
4
6
8
1p
12
14
Cape Fear Downriver CTD Cast Data _°°Wsoved °nay
*Salinity � p I � �isso ��,`ed Temperature
Transect 1 Transect 2 Transect 3
Round 5 20180718 151355 ` Round 5 20180718 150809 Round 5 20180718 151027
Temperature (°C) I Temperature ('Q Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28-5 29 215 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 21 27.5 28 28.5 29 29.5 30
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Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (P51J), Dissolved Oxygen (mg/L) & pH
Round 6 20180718 152428 Round 6 20180718 151753 Round 6 20180718 152018
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29,5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
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10.5
d 10.0
9.5
9.0
m
3: 8.5
Salinity (PSU), Di&S01ved Oxygen (mg/L) 8. [, t
8.0
14:00 15:00 16
Salinity (PSU), Dissolved Oxygen (mg/Q & ,:I4.
Water Level
17:00
7/18/2018
18:00
Salinity(PSU), Dissolved Oxygen (mg/L) & ,:'i
19:00
20:00

Cape Fear Downriver CTD Cast Data °°W°nay- �► �alinit�r � p I_ A Dissov��rred I���:�Y Qerl er-I F] erature
Transect 1 Transect 2 Transect 3
Round 7 20180718 152711 Round 7 20180718 153024 Round 7 20180718 153335
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 21> 26.5 27 27.5 28 28.5 )9 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
z
4
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2
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8
10
12
14
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0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P51J), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 8 20180718 153735 Round 8 20180718 154128 Round 8 20180718 154413
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
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0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
Salinity (P51J), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
10.5
Water Level
10.0
9.5
9.0
m
3: 8.5
8.0
14:00 15:00 16:00 17:00
7/18/2018
18:00
Sallnity (PSU), Dissolved Oxygen (mg/LI & pl I
19:00
20:00

own
nayCa a Fear Downriver CTD Cast Data *Salinity p- A Dissoved
Temperature
Transect 1 Transect 2 Transect 3
Round 9 20180718 155124 Round 9 20180718 155505 Round 9 20180718 154555
Temperature (DC) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 )9 29.5 30 25 25.5 26 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26.5 21 27.5 28 28.5 29 29.5 30
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Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/1-1 & PH
Round 10 20180718 160148 Round 10 20180718 160513 Round 10 20180718 155744
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
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10.5
d 10.0
9.5
9.0
m
3: 8.5
8.0 +-
14:00
Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Water Level
15:00 16:00 17:00
7/18/2018
18:00
Salinity (PSU), Dissolved Oxygen (m g/L) & ,: i',
19:00
20:00

own
nayCa a Fear Downriver CTD Cast Data *Salinity p- A Dissoved
Temperature
Transect 1 _ Transect 2 Transect 3
Round 11 20180718 161247 Round 11 20180718 161641 Round 11 20180718 160825
Temperature (°C) Temperature (°C) Temperature ("Q
25 25.5 26 26.5 27 27.5 28 28.5 29 295 30 25 25.5 2" 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 21 27.5 28 28.5 29 29.5 30
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•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 12 20180718 162432 Round 12 20180718 162847 Round 12 20180718 162004
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 285 29 29.5 30
U
2
4
6
8
1p
12
14
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
0
2
4
6
8
10
12
14
M t
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
•
0
2
4
6
8
1p
12
14
♦ ■
♦
•
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
• ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH
10.5
Water Level
10.0
9.5
9.0
m
3: 8.5
8.0
14:00 15:00 16:00 17:00
7/18/2018
18:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
19:00
20:00

Cape Fear Downriver CTD Cast Data _°°Wsoved °nay
*Salinity � p I � �isso ��,`ed Temperature
Transect 1 _ Transect 2 Transect 3
Round 13 20180718 163616 Round 13 20180718 164044 Round 13 20180718 163146
Temperature (oC) Temperature (oC) Temperature (oC)
25 25.5 21> 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
z
• ■ ♦ •
2
■ `
z
♦ ■ ♦ •
• ■ ♦ •
♦ ■ ♦ •
4
4
• ■ ♦ •
4
• ■ ♦ •
• ■ • •
6
6
• ■ ♦ •
6
• ■ •
♦ ■ ♦ •
f ■ ♦ •
• ■ ♦ •
• ■ ♦ •
8
8
8
• ■ ♦ •
t
12
12
12
14
14
14
♦ ■
1
•
• ■
a
r
•
0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P51J), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (P51J), Dissolved Oxygen (mg/L) & pH
Round 14 20180718 164817 Round 14 20180718 165205 Round 14 20180718 164352
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
1p
12
14
♦
■ ♦
•
•
•
■ ♦
■ ♦
•
•
•
■ ♦
•
♦
■ ♦
•
0
2
4
6
8
10
12
14
•
■
♦
•
♦
■
a
•
♦
■
a
•
♦
■
♦
•
♦
■
♦
•
•
■
♦
•
♦
■
♦
•
•
■
•
•
♦
■
♦
•
♦
■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
0/ 9.0
m
3: 8.5
8.0
14:00
Salinity (P51J), Dissolved Oxygen (mg/L) & pH
15:00
Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Water Level
17:00
7/18/2018
18:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
19:00
20:00

Cape Fear Downriver CTD Cast Data _°°Wsoved °nay
*Salinity � p I � �isso ��,`ed Temperature
Transect 1 Transect 2 Transect 3
Round 15 20180718 165955 Round 15 20180718 170345 Round 15 20180718 165505
Temperature (°C) Temperature (°C) Temperature (oC)
25 25.5 21> 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 -6 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
•
■
♦
•
+
■
♦
•
♦
■
♦
•
•
■
♦
•
•
■
♦
•
♦
■
♦
•
•
■
♦
•
•
■
•
•
2
4
6
8
10
12
14
•
■
r
♦
•
•
•
♦
■
■
♦
♦
•
•
•
■
♦
•
2
4
6
8
10
12
14
♦
■
1 •
+
■
•
+
■
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & p, ! Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (P51J), Dissolved Oxygen (mg/L) & pH
Round 16 20180718 171050 Round 16 20180718 171450 Round 16 20180718 170637
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
D
2
4
6
8
1p
12
14
♦
■
.
•
•
■
♦
•
•
■
♦
•
•
■
♦
•
+
■
•
•
♦
■
♦
•
•
■
♦
•
a
2
4
6
8
10
12
14
•
■
♦
•
•
■
♦
•
•
■
♦
•
•
■
♦
•
•
■
♦
•
♦
■
♦
•
i
■
•
•
•
■
•
•
•
■
♦
•
•
■
l
•
•
♦
■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
9.0
m
3: 8.5
Salinity (P51J), Dissolved Oxygen (mg/L) & pH
8.0
14:00 15:00 16
Salinity (PSU), Dissolved Oxygen (mg/L) & ,:H. Salinity (P51J), Dissolved Oxygen (mg/L)& pH
Water Level
17:00
7/18/2018
18:00 19:00 20:00

°°WCasts °nayCa a Fear Downriver CTD Cast Data *Salinity pI_ A Dissoved
C-xy Qerl Mi Temperature
Transect 1 Transect 2 Transect 3
Round 17 20180718 172524 Round 17 20180718 172944 Round 17 20180718 171814
Temperature (oQ Temperature (DC) Temperature (DC)
25 25.5 21> 265 27 27.5 28 28S 29 29.5 30 25 25.5 26 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 30
D
2
4
6
8
10
12
14
D
2
4
6
8
1U
12
14
0 1 2 3 4 5 6 7 8 9 1D 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& ,:H Salinity (1251J), Dissolved Oxygen (mg/L) & pH
Round 18 20180718 173647 Round 18 20180718 174103 Round 18 20180718 173251
Temperature (oC) Temperature (oC) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
•
■
♦
•
♦
■
a
ON
♦
■
♦
•
♦
■
Ilk
•
•
■
♦
•
♦
■
♦
•
•
■
♦
•
♦
■
♦
•
♦
■
♦
•
•
■
♦
•
•
■
♦
•
♦
■
♦
•
•
■
♦
•
i
C
U
2
4
6
8
10
12
14
♦
■
♦
•
•
■
A.
•
•
■
♦
•
♦
■
♦
•
♦
■
♦
•
i
■
♦
•
•
■
♦
•
D
2
4
6
8
10
1z
14
0 1 2 3 4 5 6 7 8 9 10 D 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & ,: i. Salinity (PSU), Dissolved Oxygen (mg/L)& pO
10.5
Water Level
10.0 —
9.5
9.0
m
3: 8.5
8.0
14:00 15:00 16:00 17:00 18:00 19:00 20:00
7/18/2018
•
U
2
4
6
8
1p
12
14
I
•
■
♦
•
•
■
♦
•
•
■
♦
•
♦
■
♦
•
♦
■
♦
•
♦
■
•
•
•
■
r
•
r
•
■
r
•
■
Salinity (PSU), Dissolved Oxygen (mg/L) & pH

Cape Fear Downriver CTD Cast Data _°°Wsoved °nay
*Salinity � p I � �isso ��,`ed Temperature
Transect 1 _ Transect 2 Transect 3
Round 19 20180718 174837 Round 19 20180718 175323 Round 19 20180718 174421
Temperature (DC) Temperature ('Q Temperature (oQ
25 25.5 26 26.5 27 27.5 28 28.5 )9 29.5 3P 25 25.5 2" 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 30
U
O
U
2
• ■ A
2
4
■
• ■ ♦ •
4
6
• ■ ♦ •
• ■ ♦ •
♦ ■ ♦ •
6
8
• ■ ♦ •
8
♦
10
■ ♦ •
10
12
12
14
14
♦
■
i
♦
■
•
•
♦
■
•
•
♦
■
♦
•
♦
■
♦
•
•
■
A
•
•
■
♦
•
♦
■
A
•
•
■
A
•
U
2
4
6
8
10
12
14
•
■
♦
•
♦
■
•
•
•
■
♦
•
♦
♦
■
■
♦
♦
•
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 20 20180718 180148 Round 20 20180718 180540 Round 20 20180718 175610
Temperature (oC) Temperature ('Q Temperature (oC)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
♦
•
a
■
♦
•
♦
■
♦
•
U
2
4
6
8
Yp
12
14
s
Ir
s
♦
■
♦
•
♦
■
♦
•
♦
■
•
•
♦
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•
•
♦
■
♦
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♦
■
A
•
♦
■
A
•
♦
♦
■
♦
•
♦
■
A
•
•
■
A
•
•
■
♦
•
M
0
2
4
6
8
10
12
14
♦
■
•
•
■
A
•
•
■
A
•
•
■
A
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & PH
10.5
Water Level
10.0
9.5
9.0
m
3: 8.5
8.0
14:00 15:00 16:00 17:00
7/18/2018
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
18:00 19:00 20:00

°°WCasts °nayCa a Fear Downriver CTD Cast Data *Salinity pI_ A Dissoved
Temperature
Transect 1 Transect 2 Transect 3
Round 21 20180718 181326 Round 21 20180718 181733 Round 21 20180718 180847
Temperature (oQ Temperature (°C) Temperature ('C)
25 25.5 21> 26.5 27 27.5 28 28.5 29 295 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
i
r
i
i
♦
■
•
•
♦
is
U
2
4
6
8
10
12
14
i
♦
■
♦
•
♦
■
♦
•
♦
■
♦
•
•
■
♦
•
♦
.
•
•
♦
■
♦
•
•
■
♦
•
♦
■
♦
•
U
2
4
6
8
10
12
14
♦
■
♦
•
•
■
♦
•
0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P51J), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 22 20180718 182634 Round 22 20180718 183033 Round 22 20180718 182103
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
• ■ ♦ •
• ■ • •
♦ ■ • •
• ■ • •
♦ ■ ♦ •
♦ ■ ♦ •
O
2
4
6
8
10
12
14
1
♦
■
♦
•
♦
■
•
•
♦
■
♦
•
♦
■
•
•
•
■
•
•
•
■
♦
•
♦
■
♦
•
•
■
•
•
0
2
4
6
8
10
12
14
1
•
■
♦
•
♦
■
♦
•
♦
■
♦
•
♦
■
♦
•
♦
■
♦
•
•
■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P51J), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
10.5
Water Level
10.0
9.5
9.0
m
3: 8.5
8.0
14:00 15:00 16:00 17:00
7/18/2018
18:00
Salinity (PSU), Dissolved Oxygen (mg/L) & ,:'i
19:00
20:00

Cape Fear Downriver CTD Cast Data _°°Wsoved °nay
*Salinity � p l � �isso ��,`ed Temperature
Transect 1 Transect 2 Transect 3
Round 23 20180718 183828 Round 23 20180718 184234 Round 23 20180718 183351
Temperature (DC) Temperature ('Q Temperature (DC)
25 25.5 26 26.5 27 27.5 28 28-5 29 29.5 30 25 25.5 -6 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
1p
12
14
♦
■
♦
•
♦
■
♦
•
♦
■
♦
•
•
■
♦
•
0
2
4
6
8
10
12
14
♦
■
♦
1
♦
■
•
•
•
■
•
•
♦
■
•
•
♦
■
•
•
♦
■
•
•
•
■
♦
•
0
2
4
6
8
10
12
14
•
■
h
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & ;: H Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (P51J), Dissolved Oxygen (mg/L) & pH
Round 24 20180718 184854 Round 24 20180718 185215 Round 24 20180718 184528
Temperature (°C) Temperature ('Q Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28-5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
z
4
6
8
10
12
14
♦
■
♦
•
♦
♦
♦
■
■
■
♦
♦
♦
•
•
•
0
2
4
6
S
10
12
14
•
■
♦
•
♦
■
.
•
♦
■
♦
•
♦
■
♦
•
•
■
a
•
0
z
4
6
8
10
12
14
♦ ■
•
Z
♦ ■
h
•
0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
10.5
Water Level
10.0
9.5
9.0
m
3: 8.5
8.0
14:00 15:00 16:00 17:00
7/18/2018
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
18:00 19:00 20:00

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity A. p l 1�-x.Y Qerl Temperature
Transect 1 _ Transect 2 Transect 3
Round 25 20180718 185913 ` Round 25 20180718 190258 Round 25 20180718 185503
Temperature (OC) I Temperature (OC) Temperature (OC)
25 25.5 26 M.5 27 27.5 28 28.5 29 29.5 30 25 25.5 2i; 26.5 27 27.5 28 28.5 29 2925 .5 30 25 25.526 26.5 21 27.5 28 28.5 29 29.5 30
0
0
z
a ■ .
•
2
4
■
• ■ • •
1 i
4
6
♦ ■ ♦ •
6
8
♦ ■ . •
8
1p
10
12
12
14
14
•
■
♦
•
• ■
♦
•
N
♦
•
w
♦
•
■♦
♦
•
■•
♦
•
■ •
♦
•
■ •
♦
•
■ •
•
•
0
z
4
6
8
10
12
14
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (1351J), Dissolved Oxygen (mg/L) & pH
Round 26 20180718 190854 Round 26 20180718 191303 Round 26 20180718 190536
Temperature (OC) Temperature (°C) Temperature (OC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 10 25 25.5 26 26.5 27 27.5 28 285 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
z
4
6
a
10
12
14
mow■ ■ ■ ■ ■
♦ ■ ♦
•
0
2
4
6
8
Yp
12
14
N
■
♦
a
•
•
0
2
4
6
8
1p
12
14
0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P51J), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH
10.5
Water Level
10.0
9.5
9.0
m
3: 8.5
8.0
14:00 15:00 16:00 17:00
7/18/2018
salinity (PSU), Dissolved oxygen (.91L) &
18:00 19:00 20:00

own
nayCa a Fear Downriver CTD Cast Data *Salinity p- A Dissoved
Temperature
Transect 1 Transect 2 Transect 3
Round 27 20180718 191924 Round 27 20180718 192233 Round 27 20180718 191526
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 21> 26.5 27 27.5 28 28.5 29 295 30 ( 25 25.5 -6 26.5 27 27.5 28 289 29 29.5 30 25 25.5 26 26.5 21 27.5 28 28.5 29 29.5 30
2
4
6
S
1p
12
14
4• dpiiiiiiii■■■ ■ ■ ■ ■ AS 4%
2
4
6
9
Yp
12
14
■ Y
■ • •
■
■ ♦ e
2
4
6
8
10
12
14
• ■ ♦ •
f ♦ •
-
■ • ♦ •
•
■M
•
•
T
■
♦
♦
•
■
•
♦
•
■
♦
♦
•
■
•
♦
•
■
•
I
•
■
•
♦
•
■
•
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P5U), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (P51J), Dissolved Oxygen (mg/L) & pH
Round 28 20180718 192909 Round 28 20180718 194155 Round 28 20180718 192507
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 285 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
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•.
t
s
■
t
!
f
0
2
4
6
9
Yp
12
14
■
■
■
■
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♦ •
•
•
•
•
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0
2
4
6
e
10
12
14
■
♦ ♦
•
■
• ♦
•
■
Y
•
■
♦
•
0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P51J), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH
10.5
Water Level
10.0
9.5
9.0
m
3: 8.5
8.0
14:00 15:00 16:00 17:00
7/18/2018
Salinity (PSU), Dissolved Oxygen (m g/L) & ,: i',
18:00 19:00 20:00

Appendix II-G
Downstream Site
CTD Profiles — Current Survey

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity A. p I I�-x-Y Qerl 0 Temperature
Transect 1 Transect 2 Transect 3
Round 1 20180726 124142 Round 1 20180726 125436
Temperature (°C) Temperature ("C)
25 25.5 26 26.5 27 27.5 28 29.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 29.5 29 29.5 30
O
2
4
6
a
10
12
14
♦ ■
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•♦
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2 :
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2
4
6
8
10
12
14
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a
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0 1 2 3 4 5 6 7 8 9 1Q 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 2 20180726131653 Round 2 20180726 132516 Round 2 20180726 133500
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
O
2
4
6
8
10
12
14
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:
I
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::
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r
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2
4
6
8
10
12
14
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•
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2 :
f
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & ,,i Salinity (PSU), Dissolved Oxygen (mg/L)& pH
2.5 Water Level
v
2.0
E 1.5
f6 1.0
0.5 —
12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
7/26/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
20:00 21:00 22:00 23:00 0:00 1:00

Cape Fear Downriver CTD Cast Data I,�;�ADi o ved � x ger� � .�
Transect 1 Transect 2 Transect 3
Round 3 20180726 134603 Round 3 20180726 135715 Round 3 20180726 140648
Temperature (oC) Temperature (°C) Temperature (oQ
25 25.5 26 265 21 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
O
2
4
6
a
10
12
14
r A
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•
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♦ ■ r
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2 � s
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0
2
4
6
a
1a
12
14
:
t
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r
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s :
:
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s �
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r
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i ■
r
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2
4
6
8
10
12
14
Temperature
29 29.5 30
:
t
+tz• ■
♦ I
I
♦ ■
r
• ■
r
• ■
As
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), Dissolved Oxygen (mg/L) & p I I Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Round 4 20180726141930 Round 4 20180726 143209 Round 4 20180726 144200
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
O
2
4
6
8
10
12
14
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r
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29 29.5 30
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l
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7
2.5
> 2.0
v
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Salinity (PSU), Dissolved Oxygen (mg/L) & pN
Water Level
13:00 14:00 15:00 16:00 17:00 18:00 19:00
7/26/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & 1
8 9 10
20:00 21:00 22:00 23:00 0:00 1:00

Cast
Cape Fear Downriver CTD Cast Data Sa _ °°W� ����•rrsoved _°nay
I�fl�tj� A, p I IL �x Qe rI
Transect 1 Transect 2 Transect 3
Round 5 20180726 145648 Round 5 20180726 151855
Temperature (o[) Temperature (oQ
25 25.5 26 265 21 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
0
2
4
6
8
10
12
14
U
2
4
6
1p
12
14
1
1
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S
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2
4
6
8
10
12
14
Temperature
29 29.5 30
•
■
I
i
f
•
.
•
.
•
.
i
•
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♦
•
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•
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0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), Dissolved Oxygen (mg/L) &,�i Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 6 20180726153425 Round 6 20180726 154356 Round 6 20180726155342
Temperature (0Q Temperature ('Q Temperature (0Q
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 255 26 26-5 27 27.5 28 28.5
t
r
.s
1
A
i
1
♦ ■
•
•
U
2
4
6
8
10
12
14
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•
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2
4
6
8
10
12
14
8 9 10
29 29.5 30
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0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7
2.5
> 2.0
v
E 1.5 —
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & ,i
Salinity (PSU), Dissolved oxygen (mg/L) & pN
Water Level
13:00 14:00 15:00 16:00 17:00 18:00 19:00
7/26/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
8 9 10
20:00 21:00 22:00 23:00 0:00 1:00

Cape Fear Downriver CTD Cast Data I,�;�ADi o ved � x ger� � .�
Transect 1 Transect 2 Transect 3
Round 7 20180726161413 Round 7 20180726162544 Round 7 20180726 163733
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 265 21 27.5 28 28.5 29 29.5 30 25 255 26 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
O
2
4
e
8
10
12
14
z
r
t
A.
s
!
A
: I
:
it
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s s
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2
4
6
8
10
12
14
1
�
S
A
0
■0
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♦
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♦ ■
♦ ■
♦
♦
•
•
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29 29.5 30
■
■
♦
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2♦
i 1
♦ ■
A
•
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♦
•
A
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♦
•
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0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Round 8 20180726 165510 Round 8 20180726 172315
Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
O
2
4
6
8
1a
12
14
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f
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A
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2
4
6
8
1p
12
14
8 9 10
29 29.5 30
0
A
0
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0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & a.
2.5 Water Level
v
2.0
E 1.5
f6 1.0
0.5 —
12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
7/26/2018
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
20:00 21:00 22:00 23:00 0:00 1:00

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity A. p I I�-x.Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 9 20180726175020 Round 9 20180726180119 Round 9 20180726181058
Temperature (OC) Temperature (°C) Temperature (OC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 21 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
1z
14
IP
F
♦ ■
♦
•
♦ ■
♦
•
♦
S 1
i
_
♦ ■
2 1
•
■
i
S 1
i
S 1
f
t
0
2
4
6
a
10
12
14
1
A
• ■
♦
•
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•
•
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•
♦ ■
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S 1
1
■
♦
•
■
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2 1
!
i
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i
1
i
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2 1
_
2
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♦
•
♦ ■
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•
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♦
•
■
•
•
♦
•
♦ ■
♦
•
■
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) &,, I1 Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 10 20180726182557 Round 10 20180726183838 Round 10 20180726184728
Temperature (OC) Temperature (°C) Temperature (OC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
2 1
s
■
■
♦
•
• ■
•
♦ ■
♦
•
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♦
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♦ ■
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♦ ■
♦
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♦
•
■
♦ ■
O
2
4
6
a
10
12
14
3 9
f
f
1
t
♦
� 1
i
i
O
2
4
6
8
10
12
14
1
1
i
• ■
•
S 1
i
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♦
•
0
1
♦
♦ ■
♦
S 1
i
s
i
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10
2.5
> 2.0
v
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & r : i
Salinity (PSU), Dissolved Oxygen (mg/L) & ptt
Water Level
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 1:00
7/26/2018

Cape Fear Downriver CTD Cast Data _°°WA Dissov��rred only
Salinity � p I I�-x-Y Qerl 4b Tem E] erature
Transect 1 Transect 2 Transect 3
Round 11 20180726190729 Round 11 20180726191808 Round 11 20180726192620
Temperature (`C) Temperature (°C) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 255 26 26.5 27 275 28 29.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
U
2
4
6
8
10
12
14
U
2
4
6
8
10
12
14
■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
t 1A
A_
♦ ■
I
•
0
2
4
6
8
1p
12
14
• ■
♦
•
• ■
• ■
♦
♦
•
•
• ■
♦
•
• ■
♦
•
♦ ■
•
•
♦ ■
►
i
Z 1
2
2
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
0
2
4
6
8
10
12
14
1
• ■
• ■
• ■
♦
♦
♦
•
•
•
♦ ■
♦ ■
♦ ■
♦
♦
♦
•
•
•
♦ ■
• ■
♦ ■
♦
♦
♦
•
•
•
2 1
2
!
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& p0 Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Round 12 20180726 194158 Round 12 20180726 195341 Round 12 20180726 200421
Temperature (oC) Temperature (oC) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
• ■
a
•
■
♦ ■
■
f
I
1
t
U
2
4
6
8
10
12
14
♦ ■
♦
•
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
i i
i
i
■
■A
A•
2 1
i
=
• ■
♦
•
• ■
♦
•
1
1
U
2
4
6
8
10
12
14
2 1
_
2 1
_
2 1
i
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & Salinity (PSU), Dissolved Oxygen (mg/L)& p0 Salinity (PSU), Dissolved Oxygen (mg/L) & pH
2.5 Water Level
v
2.0
E 1.5
f6 1.0
0.5
12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 1:00
7/26/2018

Cast
Cape Fear Downriver CTD Cast Data Sa _ °°W� ����•rrsoved _°nay
I�fl�tj� A, p I IL�7<. Qe rI
Transect 1 Transect 2 Transect 3
Round 13 20180726 202202 Round 13 20180726 203444 Round 13 20180726 204200
Temperature (oQ Temperature ('Q Temperature (oC)
25 25.5 26 26.5 21 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 275 28 28.5 29 29.5 30 1 25 25.5 26 26-5 21 27.5 28 28.5
0
2
4
6
a
10
12
14
0
2
4
6
8
10
12
14
• ■
♦
•
3
f
0
AL
3 1
2
t
i
!
t
■
♦
•
2
_
■
■
2
• ■
♦
•
■
U
2
4
6
8
10
12
14
Temperature
29 29.5 30
2
• ■
♦
•
•
A
♦ ■
♦
•
■
• ■
♦
•
♦ ■
♦
•
2 :
t
■
■
•
,
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), Dissolved Oxygen (mg/L) &,�n Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 14 20180726 205625 Round 14 20180726 210524 Round 14 20180726 211400
Temperature (oC) Temperature ('Q Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28,5
• ■
♦
•
• ■
♦
•
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•
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•
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•
•
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I
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0
2
4
6
8
1p
12
14
• ■
♦
•
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•
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•
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•
•
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♦
•
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•
0
2
4
6
10
12
L4
0 1 2 3 4 5 6 7 8 9 10 1 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2
2.5
> 2.0
v
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
13:00 14:00 15:00 16:00 17:00 18:00 19:00
7/26/2018
8 9 10
29 29.5 30
3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L(& pH
20:00 21:00 22:00 23:00 0:00 1:00

Cape Fear Downriver CTD Cast Data
Transect 1 Transect 2
Round 15 20180726 212928 Round 15 20180726 214313
Temperature (°C) Temperature (°C)
25 25,5 26 265 27 27.5 28 28.5 2 29.5 3p 25 25.5 26 26.5 27 27.5 28 28.5
❑
2
0
2
4
6
4
6
Q
�
1p
iO
12
14
12
14
Down Casts only
Salinity p I A Disco ved
Transect 3
Round 15 20180726 215409
Temperature (°C)
29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5
t
•
t
2
0
A
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
■
•
♦
♦ ■
♦
•
❑ 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), DlMfUed Oxygen (mg/C) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 16 20180726 220641
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
1
•
♦ ■
♦
•
• ■
♦
•
♦ ■
♦
•
0
A
i
f
0 1 2 3 4 5 6 7 8 9 10
Sal)nity (PSU), Dissolved Oxygen (mg/L) & ,,i
2.5 Water Level
v
2.0
E 1.5
f6 1.0
0.5 —
12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
7/26/2018
0
2
4
6
8
10
12
14
Temperature
29 29.5 30
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
0
1
• ■
♦
•
• 1
1
A
8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Round 16 20180726 223113
Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5
O
2
4
6
8
10
12
14
8 9 10
29 29.5 30
• ■
•
•
♦ ■
♦
•
• ■
♦ ■
♦
♦
•
•
♦ ■
♦
•
• ■
•
•
♦ ■
♦++
•
1
I
0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH
20:00 21:00 22:00 23:00 0:00 1:00

Cape Fear Downriver CTD Cast Data I,�;�ADi o ved � x ger� � .�
Transect 1 Transect 2 Transect 3
Round 17 20180726 224230 Round 17 20180726 225419 Round 17 20180726 230653
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 21 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 27.5 28 29.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
0
2
4
6
8
10
12
14
2
=
0
i
A
♦ ■
♦
•
• ■
♦
•
• ■
■
♦
♦
•
•
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
♦ ■
•
•
• ■
♦
•
0
2
4
fi
8
19
12
14
♦ ■
A
• ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
1
I
i
0
2
4
6
8
10
12
14
Temperature
29 29.5 30
s
t
t
• ■
• ■
♦
♦
•
•
♦ ■
2 ,
AA
A
e
•
S 1
A
• ■
♦
•
♦ ■
♦
•
1
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7
Salinity (PSU), Dissolved Oxygen (mg/L) & ,,n Salinity (PSU), Dissolved Oxygen (mg/L)& f•H Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 18 20180726 231604 Round 18 20180726 233321 Round 18 20180726 234331
Temperature (°C) Temperature CC) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5
0
2
4
6
8
10
12
14
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
I
t
♦ ■
♦
•
■
•
•
♦ ■
♦ ■
♦
•
2
f
8 9 10
29 29.5 30
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7 8 9 10 I 0 1 2 3 4 5 6 7
2.5
> 2.0
Iv
E 1.5 -
f6 1.0
0.5
12:00
Salinity (PSU), Dissolved Oxygen (mg/L) & ,i
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Water Level
13:00 14:00 15:00 16:00 17:00 18:00 19:00
7/26/2018
Salinity (PSU), Dissolved oxygen (mg/L) & i
8 9 10
20:00 21:00 22:00 23:00 0:00 1:00

Cape Fear Downriver CTD Cast Data
Transect 1 Transect 2
Down Casts only
Salinity p A Disso ved ILA .Y Qerl
Transect 3
Temperature
Round 19
20180726 235157
Round 19
20180727 000018
Round 19
20180727 000743
Temperature (°C)
Temperature(°C)
Temperature (°C)
25
25.5
26 26.5 21 27.5 28
28.5
29
29.5 30
25
25.5
2" 26.5 27 27.5 28
28.5
29
29.5 30
25
25.5
26 26.5 27 27.5 28
28.5
29 29.5 30
2
_
2
.
■
.
•
2
.
.
.
.
2
■
•
■
•
.
■
•
■A
A•
.
■
•
.
■
•
4
4
4
♦
■
•
•
•
6
6
6
A.
A•
■
•
♦
■
8
16
8
♦
■
4
■
•
♦
■
•
♦
■
•
•
10
♦
♦
■
■
•
♦
•
•
12
12
12
14
14
14
0 1
2 3 4 5 6
7
8
9 1Q
0 1
2 3 4 5 6
7
8
9 10
0 1
2 3 4 5 6
7
8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) &
pH
Salinity (PSU), Dissolved Oxygen (mg/L)& pH
Salinity (PSU), Dissolved Oxygen (mg/Li & pH
2.5 —
2.0 —
v
E
1.5 —
f6
1.0
0.5
12:00
Water Level
13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 0:00 1:00
7/27/2018

Appendix II-H
Downstream Site
CTD Profiles — Recovery

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity A. p I I�-x.Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 29 20180822 104036 Round 29 20180822 104518 Round 29 20180822 104954
Temperature (OC) Temperature (OC) Temperature (OC)
25 25.5 26 26.9 27 27.5 28 28.5 29 295 30 25 255 2i, 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
■
•
■
•
■
•
a
■
•
■
•
O
2
4
6
8
10
12
14
■
•
■
•
■
•
■
•
•
■
•
1
■
•
AA
■
•
■
•
■
•
■
•
■
•
1
■
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P5U), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 30 20180822 105611 Round 30 20180822 110111 Round 30 20180822 110454
Temperature (OC) Temperature (OC) Temperature (OC)
25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 30 25 25-5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
O
2
4
6
8
1p
12
14
■
•
■
•
1
■
•
■
•
■
•
■
•
1
O
2
4
6
8
10
12
14
■
•
A
■
•
1
1
■
•
A
x
■
•
e
■
•
s
0
2
4
6
8
10
12
14
■
•
■
•
■
•
■
•
■
•
■
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P51J), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)
10.5 Water Level
10.0
9.5
9.0
m
3: 8.5
8.0 —
10:00 11:00 12:00 13:00 14:00 15:00 16:00
8/22/2018

Cape Fear Downriver CTD Cast Data °°W°nay- �alinit�r � p I_ A Dissov��rred I���:�Y Qerl er-I F] erature
Transect 1 Transect 2 Transect 3
Round 31 20180822 111230 Round 31 20180822 112353 Round 31 20180822 112738
Temperature (°C) Temperature ('Q Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 )9 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
to
12
14
■
•
■
•
■
•
■
• _
■
•
Alk
■
•
■
•A
■
•♦
■.
•
AA
■
•♦
■
•♦
■
a
■
•♦
0
2
4
6
S
10
12
14
■
•
■
•
■
■
■
••
■
•♦
■
•L
■
r
■
r
■
r
■
r
■
r
0
2
4
6
8
1Q
12
14
■
•
■
•
■
■
■
•
■
1
■
I
■
I
■
I
■
Y
■
1•
■
Y
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mgfL) &
Round 32 20180822 113520 Round 32 20180822 114017 Round 32 20180822 114404
Temperature (°C) Temperature ('Q Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
10
12
14
■
1
■
r
■
r
■
r
■
♦•
■
■
r
Y
■
♦•
■
♦•
■
♦•
■
1•
■
♦•
■
1•
■
♦•
0
2
4
6
8
10
12
14
■
♦•
■
♦•
■
♦•
■
♦ •
0
2
4
6
8
1p
12
14
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (P5U), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
10.5 Water Level
10.0
9.5
9.0
m
3: 8.5
8.0 -
10:00 11:00 12:00 13:00 14:00 15:00 16:00
8/22/2018

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity � p I I�-x.Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 33 20180822 115041 Round 33 20180822 115450 Round 33 20180822 115911
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 255 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 285 29 29.5 30
0
z
4
6
8
10
12
14
t•
♦•
■■
■
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
• •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
t
O
2
4
6
8
10
12
14
••
■■
••
:
■
1:
♦•
■
■
♦i
J•
■
♦•
■
♦•
■
♦•
■
♦•
■
♦•
■
♦ •
■
♦•
■
A
■
♦•
■
••
■
♦•
::
■
♦•
■
A
0
2
4
6
8
1p
12
14
■
♦•
■
♦ •
■
♦ •
■
■ •
■
♦ •
■
♦ •
■
♦ •
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 34 20180822 120653 Round 34 20180822 121150 Round 34 20180822 121507
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 30
0
z
4
6
e
10
12
14
■
r
■
r
■
V
1
ti
■
♦•
■
♦•
■
♦•
■
♦•
ON
A
♦•
♦•
♦ .
♦ .
:
tt
:
ii
■
♦ •
■
■
• •
♦ •
O
2
4
6
8
10
12
14
■
a•
■
♦•
■
♦•
■
♦•
■
♦•
♦•
♦•
A
♦ .
■
♦•
■
••
■
••
♦•
■
♦AL
■
♦•
■
••
■
••
■
••
■
♦1
■
♦ •
■
♦•
■
♦•
■
••
..
■
♦•
:
::
f
�3
0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
10.5
d 10.0
9.5
0/ 9.0
m
3: 8.5
8.0
10:00
Salinity (PSU), Dissolved Oxygen (mg/L) & ,: i
11:00
12:00
Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Water Level
13:00
8/22/2018
14:00 15:00 16:00

U
2
4
6
8
1p
12
14
Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity A. p I I�-x.Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 35 20180822 122455 Round 35 20180822 122915 Round 35 20180822 123226
Temperature (oC) Temperature (oC) Temperature (DC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
■
■
A •
♦ •
A
■
A •
■
♦ •
■
♦ •
A •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
=
A
♦ •
■■
■
A
U
z
4
6
8
10
12
14
■
♦ •
■
♦ •
■
A •
■
A •
■
♦ •
■
■
♦ •
■
♦ •
■
• •
■
♦ •
■
♦ •
■
♦ •
■
♦ •
■
• •
■
A •
■
♦ •
■
♦ •
■
A •
■
♦ •
■
A •
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 36 20180822 123950 Round 36 20180822 124409 Round 36 20180822 124659
Temperature (oC) Temperature (oC) Temperature (oC)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 255 26 26-5 27 27.5 28 28-5 29 29.5 30
■
■
♦ •
• •
■
■
A •
♦ •
1
1
C
1
■
■
♦ •
A •
■
■
A •
♦ •
■
♦ •
■
■
1
A •
A •
U
2
4
6
8
10
12
14
■
A
•
■
■
♦
A
•
•
■
♦
•
■
♦
1
♦
••
•
■
•
•
■
♦
•
■
♦
•
1
A
i
■
■
♦
•
■
♦
•
■
♦
•
■
■
♦
♦
•
•
■
A
•
■
♦
•
�
r
i
U
2
4
6
10
12
14
■
♦
•
■
•
•
■
♦
•
■
♦
•
■
A
•
■
♦
•
■
♦
•
■
♦
•
■
A
•
0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 1 8 9 10
10.5
d 10.0
9.5
0/ 9.0
m
3: 8.5
8.0
10:00
Salinity (PSU), Dissolved Oxygen (mg/L) & ,: i
Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) &
,,,--,Water Level
11:00 12:00 13:00
8/22/2018
14:00 15:00 16:00

Cape Fear Downriver CTD Cast Data _°°Wsoved °nay
*Salinity � p I � �isso ��,`ed Temperature
Transect 1 Transect 2 Transect 3
Round 37 20180822 125510 Round 37 20180822 125900 Round 37 20180822 130243
Temperature (DC) Temperature (oC) Temperature (oC)
25 25.5 26 26.5 27 27.5 28 28.5 )9 29.5 30 25 25.5 2,1- 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
1p
12
14
::
♦
•
■
♦
•
i
=
■
♦
•
_
■
♦
•
■
♦
•
♦
•
■
♦
•
U
2
4
6
8
10
12
14
■
::
■
■
■
♦
•
■
♦
•
■
♦
•
U
2
4
6
8
10
12
14
■
• •
■
• •
■
• •
■
♦ •
■
1 •
■
1 •
■
L •
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 38 20180822 131018 Round 38 20180822 131350 Round 38 20180822 131701
Temperature (oC) Temperature (°C) Temperature (oC)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 255 26 26-5 27 27.5 28 28-5 29 29.5 30
0
2
4
6
8
10
12
14
■
♦
•
■
♦
•
■
♦
•
■
♦
•
1
♦
•
■
♦
•
■
♦
•
■
♦
•
■
■
♦
♦
•
•
■
•
•
:
1
:
■
♦
•
1
O
2
4
6
8
10
12
14
■
♦
•
1
•
1
�
:
■
♦
•
■
♦
•
1
A
■
♦
•
■
■
♦
♦
•
•
■
♦
•
f
♦
•
■
♦
•
■
♦
•
■
♦
•
■
♦
•
■
♦
•
U
2
4
6
8
10
12
14
■
♦
•
AL
■
•
•
■
•
•
■
♦
•
■
•
•
■
•
•
■
•
•
A
■
•
•
■
♦
•
1
�
t
0 1 2 3 4 5 6 1 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & ,: Salinity (PSU), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
10.5
Water Level
10.0
9.5
9.0
m
3: 8.5
8.0
10:00 11:00 12:00 13:00 14:00 15:00 16:00
8/22/2018

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity A. p I I�-x.Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 39 20180822 132534 ` Round 39 20180822 133005 Round 39 20180822 133319
Temperature (oC) I Temperature (°C) Temperature (°C)
25 25.5 26 26.5 21 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28S 29 29.5 30
0
2
4
6
8
1p
12
14
■
♦
•
■
♦
•
■
♦
•
■
■
•
♦
•
•
■
♦
•
■
♦
•
■
♦
•
■
•
•
■
♦
•
■
♦
•
■
♦
•
■
•
•
■
•
•
■
♦
•
■
♦
•
■
•
•
■
♦
•
V
2
4
6
8
10
12
14
■
♦
•
■
♦
•
■
♦
•
■
♦
•
■
♦
•
■
•
•
■
♦
•
■
♦
•
U
2
4
6
8
10
12
14
■
♦
•
♦
■■
■
1
••
•
■
►
•
■
♦AL
•
1
Z
S
i
■
♦
•
0
A
�
r
=
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 40 20180822 134116 Round 40 20180822 134525 Round 40 20180822 134831
Temperature (°C) I Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
e
10
12
14
1
■
♦
•
A.
■
♦
•
■
•
•
■
•
•
■
•
•
■
♦
•
■
♦
•
■
■
♦
♦
•
•
■
♦
•
■
♦
•
■
•
•
n
1
�
•
U
2
4
6
8
10
12
14
■
♦
•
■
♦
•
■
♦
•
■
■
♦
♦
•
•
■
♦
•
■
■
♦
♦
•
•
■
■
♦
♦
•
•
■
♦
•
■
♦
••
1
A
•
1
*A
■
♦
•
■
♦
•
L
Z
■
♦
•
■
•
•
■
♦
•
1
•
■
♦
•
■
♦
•
■
♦
•
■
♦
•
■
•
•
i
i
■
•
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 1 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (1`51J), Dissolved Oxygen (mg/L)& pH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
10.5 Water Level
10.0
>
9.5
9.0
m
3: 8.5
8.0 -
10:00 11:00 12:00 13:00 14:00 15:00 16:00
8/22/2018

Cape Fear Downriver CTD Cast Data _°°Wsoved °nay
*Salinity � p I � �isso ��,`ed Temperature
Transect 1 Transect 2 Transect 3
Round 41 20180822 135719 Round 41 20180822 140207 Round 41 20180822 140601
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 -6 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
O
2
4
6
8
1p
12
14
1
t
1
�
•
■
♦
•
1
A
A
■
♦
•
■
♦
•
■
♦
•
■
♦
•
■
♦
•
■
♦
•
■
♦
•
■
♦
•
0
2
4
6
8
10
12
14
■
A •
■
A •
■
L •
1
41
■
f •
■
♦ •
0
2
4
6
8
10
12
14
L •
■
1 •
A.
■
♦ •
1
A
■
L •
■
♦ •
■
♦ •
■
1 •
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & p; , Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & p; ,
Round 42 20180822 141406 Round 42 20180822 141749 Round 42 20180822 142056
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
IM
A
• ■
♦
•
• ■
• ■
♦
♦
•
•
■
♦
•
• ■
♦
•
• ■
♦
•
0
A
■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
■
►
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
i 9
t
8
■ ♦ •
■ • •
■ ♦ •
� S �
♦
1 Z
1 A
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & p, ! Salinity (PSU), Dissolved Oxygen (mg/L)& -;r Salinity (PSU), Dissolved Oxygen (mg/L) & p; ,
10.5 Water Level
10.0
9.5
9.0
m
3: 8.5
8.0 -
10:00 11:00 12:00 13:00 14:00 15:00 16:00
8/22/2018
0
2
4
6
8
Yp
12
14
1
■
■
♦
♦
•
•
1
■
A
♦
•
■
L
•
■
♦
•
■
♦
•
0
2
4
6
8
10
12
14

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed °nay
*Salinity � p I I���:�Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 43 20180822 142935 Round 43 20180822 143417 Round 43 20180822 143715
Temperature ("C) Temperature (°C) Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 275 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28S 29 29.5 30
0
2
4
6
8
1p
12
14
• 1
1
• ■
♦
•
• ■
♦
•
• ■
♦
•
■
i
•
• ■
♦
•
♦ ■
♦
•
• ■
♦ ■
• ■
♦
♦
•
•
•
♦
■■
.•
• ■
♦
•
• ■
♦
•
U
2
4
6
8
10
12
14
♦ ■
♦
•
♦ ■
♦
•
• ■
♦ ■
♦
♦
•
•
• ■
♦
•
0
A
• ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
•
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
♦ ■
A,•
♦ ■
♦
•
• ■
♦
•
•
1
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Round 44 20180822 144612 Round 44 20180822 145003 Round 44 20180822 145254
Temperature (°C) Temperature (°C) Temperature (°C)
25 25.5 26 26-5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26-5 27 27.5 28 28-5 29 29.5 30
0
2
4
6
8
1p
12
14
• ■
♦
•
• ■
♦
•
• ■
♦
•
i i
i
A
• ■
•
•
• ■
♦
•
A
0
• ■
►
•
♦ ■
♦
•
0
2
4
6
8
10
12
14
♦ ■
♦
•
i
i
• ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
0
1
• ■
•
•
• ■
1
I
•
U
2
4
6
8
10
12
14
• ■
•
•
♦
�
Z
=
i
i
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & ,:.i Salinity (PSU), Dissolved Oxygen (mg/L)& PH Salinity (PSU), Dissolved Oxygen (mg/L) & PH
10.5 Water Level
10.0
>
9.5
9.0
m
3: 8.5
8.0 —
10:00 11:00 12:00 13:00 14:00 15:00 16:00
8/22/2018

°°WCasts °nayCa a Fear Downriver CTD Cast Data *Salinity pI_ A Dissoved
Temperature
Transect 1 Transect 2 Transect 3
Round 45 20180822 150045 Round 45 20180822 150449 Round 45 20180822 150746
Temperature (°C) Temperature ('Q Temperature CC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 2&5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
♦
•
• ■
♦
•
• ■
♦
•
• ■
■
♦
♦
•
■
• ■
♦
•
0
• ■
A
•
•
■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
i
t
�
■
• ■
♦
•
V
2
4
6
8
1p
12
14
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
A
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
i 1
i
i
U
2
4
6
8
10
12
14
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
00
1
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& PH Salinity (PSU), Dissolved Oxygen (mg/L) & PH
Round 46 20180822 151549 Round 46 20180822 151904 Round 46 20180822 152141
Temperature (°C) Temperature ('Q Temperature (DC)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
O
2
4
6
a
1p
12
14
• ■
♦
•
♦ ■
♦
•
• ■
♦
•
2 1
A
=
• ■
♦
•
• ■
♦
•
• ■
•
•
• ■
♦
•
1
i
2
♦ ■
• ■
♦
♦
•
••
• ■
♦
•
• ■
♦
•
O
2
4
6
8
10
12
14
♦ ■
♦
•
A
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
1
• ■
♦
•
• ■
♦
•
•
i 1
i
i
O
2
4
6
8
10
12
14
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
A
A
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L)& PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
10.5 Water Level
10.0
9.5 ■
L
9.0
m
3: 8.5
8.0 -
10:00 11:00 12:00 13:00 14:00 15:00 16:00
8/22/2018

Cape Fear Downriver CTD Cast Data _°°WA Dissov��,`ed only
Salinity A. p I I�-x.Y Qerl Temperature
Transect 1 Transect 2 Transect 3
Round 47 20180822 152948 Round 47 20180822 153414 Round 47 20180822 153707
Temperature (°C) Temperature ('Q Temperature (°C)
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 2,1- 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
10
12
14
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
0
AL
0
U
2
4
6
8
10
12
14
2
♦ ■
•
•
2 1
i
i
• ■
•
•
U
2
4
6
8
10
12
14
• ■
♦
•
• ■
♦
•
♦
i 1
1
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
11,
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
A.
•
♦ ■
• ■
♦
•
♦ ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & pH Salinity (PSU), Dissolved Oxygen (mg/L) & PH Salinity (PSU), Dissolved Oxygen (mg/L) & pH
Round 48 20180822 154638 Round 48 20180822 155004
Temperature (°C) Temperature ('Q
25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30
0
2
4
6
8
1p
12
14
♦
•
• ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
• ■
♦
•
0
2
4
6
8
10
12
14
♦ ■
♦
•
♦ ■
A.
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
♦ ■
♦
•
0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10
Salinity (PSU), Dissolved Oxygen (mg/L) & Salinity (PSU), Dissolved Oxygen (mg/L) & PH
10.5 Water Level
10.0
9.5 ■ -
°/ 9.0
m
3: 8.5
8.0 -
10:00 11:00 12:00 13:00 14:00 15:00 16:00
8/22/2018

Appendix II-1
Downstream Site
Water Levels

1.2
0.8
0.6
E
00
o0 0.4
0
Q
z
u 0.2
c
v
v
61 0
v
v
J
--0.2
(6
-0.4
-0.6
-0.8
-1
Downstream Water Level Referenced to NAVD 88
�� �0
009� 009� 0 9� 9� 9� 009� 0094 0094�11
Axis Title

Smith

Smith

Appendix C • Concept Design of Variable Orifice
TIDEFLEX DIFFUSER NOZZLE
HYDRA I L IC ANAL YSI,S
utfall Marne: Brunswick County Outfall Diffuser, IBC
Owner: Brunswick County, NC
Consultant: CDM Smith
Analysis by:
Patrick Platt
i .
T e c h n o l o g i e s
qP
A Division of Red Valve Cum pany, Inc. ti
October 31, 2015
smith C-1

Appendix C • Concept Design of Variable Orifice
WIDE BILL TIDEFLEX DIFFUSER (TFW) SYSTEM DATA ANALYSIS
MEDIA:
Effluent
Density or
Spec. Gravity
1 k9/M3
FLOW
RANGE:
0.7
MGI] =
486 gpm
2.7
MGD =
187q gpm
3 5
MGD =
3681 gpm
AVAILABLE
Minimum
feet
HEADLOSS@
Design
feet
DIFFUSER:
Maximum
feet
MAX. BACKPRESSURE: 1 13 feet
" TFW
*HYDRAULIC
SIZE IN
CODE
8
989
' Wide Bill Tideflex Diffuser
FIXED
30-Jan-2019
Brunswick County, NO
ENGINEER: CAM Smith
CONTACT:
Ran Miner
PROJECT:
Brunswick County Outfall Diffuser, NC
REP:
NE3
CONITACT:
Bob Mack
THIS DOCUMENT CC)W JNS PROPRIETARY
INFORMATION OF TFOEFijEx TECHN4L.OGIES,
rr IS LOiAMEU Err' T10EFLEX TECHNOLOGIES.
SUBJE4'"r TO THE C�ONDrrIONS THAT rr
AND THE INFoRMATgM Ew&ovIE� THERLim
SI NLL BE USED ONLY FOR RECORD AND
REFERENCE PURPOSES. rr SHALL NOT BE
USED nR CAUSED TO ME USED IN ANY
WAY PR'EJUDICLAL TO THE INTERESTS OF
T1gEFLE% T@CFINOI i7GIF_S, rr SHALL NOT E
R ONtODUCED OR O011"1 En IN 1M O E OR IN PAFEr.
OR DI5CLASE7] TO ANYONE Wr7HOUT THE DIRECT
WRITTEN PERH FI OF TbEFLEX TECHNOIO[:InS,
AND SHALL BE RETURNED UPON REQLUE�$T,
ORIFICE DIA. ` Cd = 9
PER FIXED ORIFICE
8.08
1
486,1
486A
3.1
0.1
$.p
1875.0
1875.0
12.0
2.2
8.0
3680.5
3680.5
23.5
8.6
&0
3*.o
25.0
20.0
a
Ui 10.0
I-
LL!
5.0
40
Total Headloss vs. Flow
12.0
iIPT(
E
8-°
to
d
0 5.0
4-0
O
2-0
0.0
0 1000 2000 3000 4000 5000 0 1000 2000 30M 4OW K,
FLAN (GPM) FLOW (GPM)
TIDEFLEX TECHNOLOGIES, 600 NORTH BELL AVE„ CARNEGIE, PA 15106, [phone] phana (412) 27"10 fax
�rNrl!
112MEMMMMEM22 Ammo_
■MM■■■■ ■■■FA?■■■■■
iiiiiii iiiiiiiOFii
iii iiii ii►Ii iiF--Mdii
iii iiii i►.ii lrrr--Ili
iiiiiii i-111111101 _ ii■ llu�7u ■q
WR.Nidd 11111EM2212MM
C-2 Smith

Appendix D
CORMIX Prediction Files
This section includes a single sample prediction file for the tidal scenario of 30 minutes after low
water slack tide for the high flow scenario. Prediction files associated with the other modeling
scenarios discussed in Section 7 are provided electronically as a separate document.
A description of the modeling scenarios in the electronic submittal is provided below.
Prediction Files for Appendix D
File Name
Discharge
Flow
Mode
Tidal hour (or ambient
velocity for Steady State
Cases)
LHQ_C1_SS_5p9in_MaxAmbV_1p5mps.prd
0.7 mgd
Steady State
1.5 m/s
LHQ_C1_SS_5p9in_MaxAmbV_2mps.prd
0.7 mgd
Steady State
2 m/s
C1_SS_SpOmgd_9p4in_MaxAmbV_1p5mps.prd
5.0 mgd
Steady State
1.5 m/s
C1_SS_5pOmgd_9p4in_MaxAmbV_2mps.prd
5.0 mgd
Steady State
2 m/s
C1_Tidal_5pOmgd_Op5hr_9p4in.prd
5.0 mgd
Tidal
0.5
C1_Tidal_5pOmgd_3p7hr_9p4in.prd
5.0 mgd
Tidal
3.7
C1_Tidal_5pOmgd_6p9hr_9p4in.prd
5.0 mgd
Tidal
6.9
C1_Tidal_5pOmgd_7p9hr_9p4in.prd
5.0 mgd
Tidal
7.9
C1_Tidal_5pOmgd_9p9hr_9p4in.prd
5.0 mgd
Tidal
9.9
C1_Tidal_5pOmgd_11p9hr_9p4in.prd
5.0 mgd
Tidal
11.9
LQ_C1_Tidal_Op6_5p9in_v2.prd*
0.7 mgd
Tidal
0.6
LQ_C1_Tidal_3p7_5p9in_v2.prd
0.7 mgd
Tidal
3.7
LQ_C1_Tidal_6p9_5p9in_v2.prd
0.7 mgd
Tidal
6.9
LQ_C1_Tidal_7p9_5p9in_v2.prd
0.7 mgd
Tidal
7.9
LQ_C1_Tidal_9p9_5p9in_v2.prd
0.7 mgd
Tidal
9.9
LQ_C1_Tidal_11p9_5p9in_v2.prd
0.7 mgd
Tidal
11.9
*Due to CORMIX limitations during reversing tides, the 0. hour 0.5 low discharge flow tidal scenario
terminated before reaching the target dilution or 100 ft. Therefore hour 0.6 is reported in its place.
Smith D-1

Appendix D • CORMIX Prediction Files
CORMIXI PREDICTION FILE:
111111111111111111111111111111111111111111111111111111111111111111111111111
11111111111111111111
CORMIX MIXING ZONE EXPERT SYSTEM
Subsystem CORMIXI: Single Port Discharges
CORMIX Version 10.OGT
HYDR01 Version 10.0.1.0 April 2017
CASE DESCRIPTION
Site name/label: Upstream Site
Design case: Testing
FILE NAME:\\i... ing\5p0_mgd_9p4in\C1_Tidal_7p9hr_5pOmgd_9p4in.prd
Time stamp: 02/12/2019--14:23:50
ENVIRONMENT PARAMETERS (metric units)
Bounded section
BS = 60.96 AS = 340.77 QA = 37.48 ICHREG= 1
HA = 5.59 HD = 5.59
Tidal Simulation at TIME = 0.500 h
PERIOD= 12.42 h UAmax = 0.320 dUa/dt= 0.220 (m/s)/h
UA = 0.110 F = 0.028 USTAR =0.6466E-02
UW = 1.000 UWSTAR=0.1071E-02
Uniform density environment
STRCND= U RHOAM = 1000.0000
DISCHARGE PARAMETERS (metric units)
BANK = LEFT DISTB = 2.00
DO = 0.239 AO = 0.045 HO = 1.83 SUBO = 3.76
THETA = 0.00 SIGMA = 270.00
UO = 4.897 QO = 0.219 =0.2191E+00
RH00 = 1000.0000 DRH00 =0.0000E+00 GPO =0.0000E+00
CO =0.2000E+03 CUNITS= mg/1
IPOLL = 1 KS =0.0000E+00 KD =0.0000E+00
FLUX VARIABLES (metric units)
QO =0.2191E+00 MO =0.1073E+01 JO =0.0000E+00 SIGNJO= 1.0
Associated length scales (meters)
LQ = 0.21 LM = 99999.00 Lm = 9.42 Lb = 0.00
Lmp = 99999.00 Lbp = 99999.00
Tidal: Tu = 0.1811 h Lu = 25.988 Lmin = 0.661
NON -DIMENSIONAL PARAMETERS
FRO = 99999.00 R = 44.52
FLOW CLASSIFICATION
111111111111111111111111111111111111111111
1 Flow class (CORMIXI) = H5-90 1
1 Applicable layer depth HS = 5.59 1
1 Limiting Dilution S=QA/QO= 172.11 1
D-2 Smith

Appendix D • CORMIX Prediction Files
111111111111111111111111111111111111111111
MIXING ZONE / TOXIC DILUTION / REGION OF INTEREST PARAMETERS
CO =0.2000E+03 CUNITS= mg/l
NTOX = 0
NSTD = 0
REGMZ = 0
XINT = 700.00 XMAX = 700.00
X-Y-Z COORDINATE SYSTEM:
ORIGIN is located at the bottom and below the center of the port:
2.00 m from the LEFT bank/shore.
X-axis points downstream, Y-axis points to left, Z-axis points upward.
NSTEP = 100 display intervals per module
----------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------
BEGIN MOD101: DISCHARGE MODULE
COANDA ATTACHMENT immediately following the discharge.
X Y Z S C B Uc TT
0.00 0.00 0.00 1.0 0.200E+03 0.17 4.897 .00000E+00
END OF MOD101: DISCHARGE MODULE
----------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------
BEGIN CORJET (MOD110): JET/PLUME NEAR -FIELD MIXING REGION
Bottom -attached jet motion.
UNSTABLE NEAR -FIELD: Jet/plume will mix over full layer depth.
Following MOD133 will include recirculation into jet region.
Profile definitions:
B = Gaussian 1/e (37%) half -width, normal to trajectory
Half wall jet, attached to bottom.
S = hydrodynamic centerline dilution
C = centerline concentration (includes reaction effects, if any)
Uc = Local centerline excess velocity (above ambient)
TT = Cumulative travel time
X
Y Z
S
C B Uc
TT
0.00
0.00
0.00
1.0 0.200E+03
0.13
4.897
.60018E-02
0.00
-0.34
0.00
1.0 0.200E+03
0.16
4.897
.48194E-01
0.01
-0.73
0.00
1.0 0.197E+03
0.21
4.897
.11082E+00
0.01
-1.12
0.00
1.2 0.163E+03
0.25
4.694
.18792E+00
0.03
-1.51
0.00
1.4 0.139E+03
0.29
3.996
.27952E+00
0.04
-1.84
0.00
1.6 0.123E+03
0.33
3.542
.36961E+00
0.06
-2.24
0.00
1.8 0.109E+03
0.37
3.126
.48828E+00
0.08
-2.63
0.00
2.10.972E+02
0.42
2.795
.62162E+00
0.11
-3.02
0.00
2.3 0.879E+02
0.46
2.526
.76970E+00
Smith D-3

Appendix D • CORMIX Prediction Files
0.13
-3.35
0.00
2.5 0.813E+02
0.50
2.332
.90844E+00
0.16
-3.74
0.00
2.7 0.746E+02
0.54
2.138
.10842E+01
0.20
-4.13
0.00
2.9 0.689E+02
0.59
1.973
.12749E+01
0.24
-4.52
0.00
3.10.640E+02
0.63
1.829
.14808E+01
0.28
-4.85
0.00
3.3 0.603E+02
0.67
1.721
.16695E+01
0.33
-5.24
0.00
3.5 0.564E+02
0.72
1.608
.19039E+01
0.39
-5.63
0.00
3.8 0.529E+02
0.76
1.508
.21539E+01
0.45
-6.01
0.00
4.0 0.499E+02
0.81
1.418
.24197E+01
0.50
-6.35
0.00
4.2 0.475E+02
0.85
1.348
.26602E+01
0.57
-6.73
0.00
4.5 0.449E+02
0.90
1.274
.29558E+01
0.64
-7.12
0.00
4.7 0.426E+02
0.94
1.206
.32677E+01
0.72
-7.50
0.00
4.9 0.405E+02
0.99
1.143
.35962E+01
0.79
-7.83
0.00
5.2 0.388E+02
1.03
1.094
.38911E+01
0.87
-8.21
0.00
5.4 0.370E+02
1.08
1.040
.42510E+01
0.96
-8.59
0.00
5.7 0.353E+02
1.13
0.991
.46283E+01
1.06
-8.97
0.00
5.9 0.337E+02
1.18
0.944
.50231E+01
1.15
-9.29
0.00
6.2 0.325E+02
1.23
0.907
.53758E+01
1.25
-9.67
0.00
6.4 0.311E+02
1.28
0.866
.58042E+01
1.36
-10.04
0.00
6.7 0.298E+02
1.33
0.828
.62511E+01
1.48
-10.42
0.00
7.0 0.286E+02
1.38
0.792
.67168E+01
1.58
-10.74
0.00
7.3 0.276E+02
1.43
0.763
.71313E+01
1.71
-11.11
0.00
7.5 0.265E+02
1.48
0.730
.76331E+01
1.84
-11.48
0.00
7.9 0.255E+02
1.54
0.700
.81548E+01
1.98
-11.84
0.00
8.2 0.245E+02
1.60
0.670
.86969E+01
2.10
-12.15
0.00
8.4 0.237E+02
1.65
0.647
.91780E+01
2.25
-12.52
0.00
8.8 0.228E+02
1.70
0.620
.97589E+01
2.41
-12.88
0.00
9.10.220E+02
1.76
0.595
.10361E+02
2.57
-13.23
0.00
9.4 0.212E+02
1.82
0.571
.10986E+02
2.71
-13.54
0.00
9.7 0.205E+02
1.87
0.552
.11539E+02
2.88
-13.89
0.00
10.10.198E+02
1.93
0.530
.12205E+02
3.06
-14.24
0.00
10.5 0.191E+02
2.00
0.509
.12895E+02
3.24
-14.58
0.00
10.9 0.184E+02
2.06
0.488
.13608E+02
3.40
-14.88
0.00
11.2 0.179E+02
2.11
0.472
.14238E+02
3.59
-15.22
0.00
11.6 0.173E+02
2.18
0.453
.14997E+02
3.79
-15.55
0.00
12.0 0.167E+02
2.24
0.436
.15780E+02
4.00
-15.89
0.00
12.4 0.161E+02
2.31
0.419
.16589E+02
4.18
-16.17
0.00
12.8 0.157E+02
2.36
0.405
.17302E+02
4.39
-16.50
0.00
13.2 0.152E+02
2.43
0.389
.18159E+02
4.61
-16.82
0.00
13.6 0.147E+02
2.49
0.374
.19041E+02
4.84
-17.14
0.00
14.10.142E+02
2.56
0.360
.19951E+02
5.04
-17.41
0.00
14.5 0.138E+02
2.62
0.348
.20752E+02
5.27
-17.72
0.00
15.0 0.134E+02
2.69
0.335
.21712E+02
5.52
-18.03
0.00
15.4 0.130E+02
2.76
0.323
.22700E+02
5.76
-18.33
0.00
15.9 0.126E+02
2.83
0.311
.23715E+02
5.98
-18.59
0.00
16.4 0.122E+02
2.88
0.301
.24608E+02
6.23
-18.89
0.00
16.9 0.119E+02
2.95
0.290
.25675E+02
6.49
-19.18
0.00
17.4 0.115E+02
3.02
0.279
.26771E+02
6.76
-19.47
0.00
17.9 0.112E+02
3.09
0.269
.27894E+02
6.99
-19.71
0.00
18.3 0.109E+02
3.15
0.261
.28880E+02
7.26
-19.99
0.00
18.9 0.106E+02
3.22
0.252
.30057E+02
D-4 Smith

Appendix D • CORMIX Prediction Files
7.54
-20.27
0.00
19.4 0.103E+02
3.29
0.243
.31262E+02
7.82
-20.54
0.00
20.0 0.100E+02
3.36
0.234
.32495E+02
8.07
-20.77
0.00
20.4 0.978E+01
3.42
0.227
.33574E+02
8.36
-21.03
0.00
21.0 0.952E+01
3.48
0.220
.34860E+02
8.65
-21.29
0.00
21.6 0.927E+01
3.55
0.212
.36173E+02
8.95
-21.55
0.00
22.10.903E+01
3.62
0.205
.37515E+02
9.20
-21.76
0.00
22.6 0.884E+01
3.68
0.199
.38686E+02
9.51
-22.01
0.00
23.2 0.862E+01
3.74
0.193
.40078E+02
9.81
-22.25
0.00
23.8 0.841E+01
3.81
0.187
.41498E+02
10.08
-22.46
0.00
24.3 0.823E+01
3.87
0.182
.42736E+02
10.39
-22.69
0.00
24.9 0.804E+01
3.93
0.176
.44205E+02
10.70
-22.93
0.00
25.5 0.785E+01
4.00
0.171
.45700E+02
11.02
-23.16
0.00
26.10.767E+01
4.06
0.166
.47221E+02
11.30
-23.35
0.00
26.6 0.753E+01
4.12
0.161
.48545E+02
11.62
-23.57
0.00
27.2 0.736E+01
4.18
0.157
.50113E+02
11.94
-23.79
0.00
27.8 0.720E+01
4.24
0.152
.51706E+02
12.27
-24.00
0.00
28.4 0.705E+01
4.30
0.148
.53323E+02
12.55
-24.18
0.00
28.9 0.693E+01
4.35
0.145
.54729E+02
12.88
-24.39
0.00
29.5 0.679E+01
4.42
0.141
.56391E+02
13.22
-24.60
0.00
30.10.665E+01
4.47
0.137
.58075E+02
13.55
-24.80
0.00
30.7 0.652E+01
4.53
0.133
.59783E+02
13.84
-24.97
0.00
31.2 0.641E+01
4.58
0.130
.61265E+02
14.18
-25.17
0.00
31.8 0.629E+01
4.64
0.127
.63014E+02
14.52
-25.36
0.00
32.4 0.618E+01
4.70
0.124
.64785E+02
14.86
-25.55
0.00
33.0 0.607E+01
4.76
0.121
.66576E+02
15.16
-25.71
0.00
33.5 0.597E+01
4.80
0.118
.68129E+02
15.50
-25.89
0.00
34.10.587E+01
4.86
0.116
.69959E+02
15.85
-26.07
0.00
34.7 0.577E+01
4.91
0.113
.71809E+02
16.20
-26.25
0.00
35.3 0.567E+01
4.97
0.110
.73679E+02
16.50
-26.40
0.00
35.8 0.559E+01
5.01
0.108
.75297E+02
16.85
-26.58
0.00
36.3 0.550E+01
5.07
0.106
.77202E+02
17.20
-26.75
0.00
36.9 0.542E+01
5.12
0.103
.79126E+02
17.55
-26.92
0.00
37.5 0.533E+01
5.17
0.101
.81068E+02
17.85
-27.06
0.00
38.0 0.526E+01
5.21
0.099
.82746E+02
18.21
-27.23
0.00
38.6 0.518E+01
5.27
0.097
.84721E+02
18.57
-27.39
0.00
39.2 0.511E+01
5.32
0.095
.86712E+02
18.92
-27.55
0.00
39.8 0.503E+01
5.36
0.094
.88720E+02
19.23
-27.68
0.00
40.2 0.497E+01
5.41
0.092
.90454E+02
19.59
-27.84
0.00
40.8 0.490E+01
5.46
0.090
.92492E+02
19.95
-27.99
0.00
41.4 0.483E+01
5.50
0.089
.94546E+02
20.31
-28.15
0.00
42.0 0.477E+01
5.55
0.087
.96615E+02
20.62
-28.27
0.00
42.4 0.471E+01
5.59
0.086
.98400E+02
Cumulative travel time
= 98.3998 sec ( 0.03 hrs)
END OF CORJET (MOD110): JET/PLUME NEAR -FIELD MIXING REGION
----------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------
BEGIN MOD133: LAYER BOUNDARY IMPINGEMENT/FULL VERTICAL MIXING
Control volume inflow:
Smith D-5

Appendix D • CORMIX Prediction Files
X Y Z S C B TT
20.62 -28.27 0.00 40.8 0.490E+01 5.59 .98400E+02
Profile definitions:
BV = layer depth (vertically mixed)
BH = top -hat half -width, in horizontal plane normal to trajectory
ZU = upper plume boundary (Z-coordinate)
ZL = lower plume boundary (Z-coordinate)
S = hydrodynamic average (bulk) dilution
C = average (bulk) concentration (includes reaction effects, if any)
TT = Cumulative travel time
X
Y Z
S
C BV BH
ZU
ZL
TT
15.03
-30.40
5.59
42.5 0.471E+01
0.00
0.00
5.59
5.59 .98400E+02
16.10
-30.40
5.59
42.4 0.471E+01
5.59
1.05
5.59
0.00 .98400E+02
17.18
-30.40
5.59
42.4 0.472E+01
5.59
1.48
5.59
0.00.98400E+02
18.26
-30.40
5.59
42.4 0.472E+01
5.59
1.81
5.59
0.00 .98400E+02
19.33
-30.40
5.59
42.4 0.472E+01
5.59
2.09
5.59
0.00 .98400E+02
20.41
-30.40
5.59
42.3 0.472E+01
5.59
2.34
5.59
0.00.98400E+02
21.48
-30.40
5.59
44.10.453E+01
5.59
2.56
5.59
0.00.10789E+03
22.56
-30.40
5.59
49.6 0.403E+01
5.59
2.77
5.59
0.00 .11971E+03
23.64
-30.40
5.59
54.8 0.365E+01
5.59
2.96
5.59
0.00 .13152E+03
24.71
-30.40
5.59
57.7 0.346E+01
5.59
3.14
5.59
0.00.14333E+03
25.79
-30.40
5.59
59.10.339E+01
5.59
3.31
5.59
0.00.15514E+03
Cumulative travel time
= 155.1364 sec
(
0.04 hrs)
END OF MOD133: LAYER BOUNDARY IMPINGEMENT/FULL VERTICAL MIXING
----------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------
BEGIN MOD154: VERTICALLY MIXED PLUME IN WEAK CROSS -FLOW
Phase 1: Vertically mixed, Phase 2: Re -stratified
Phase 1: The plume is VERTICALLY FULLY MIXED over the entire layer depth.
This flow region is INSIGNIFICANT in spatial extent and will be by-passed.
-----------------------------------------------------------------------------------------------
Phase 2: The flow has RESTRATIFIED at the beginning of this zone.
This flow region is INSIGNIFICANT in spatial extent and will be by-passed.
END OF MOD154: VERTICALLY MIXED PLUME IN WEAK CROSS-FLOW
----------------------------------------------------------------------------------------------
** End of NEAR -FIELD REGION (NFR) **
Bank nearest to plume centerline has changed.
Nearest bank is now on RIGHT.
The initial plume WIDTH values in the next far -field module will be
CORRECTED by a factor 3.31 to conserve the mass flux in the far -field!
D-6 Smith

Appendix D • CORMIX Prediction Files
The correction factor is quite large because of the small ambient velocity
relative to the strong mixing characteristics of the discharge!
This indicates localized RECIRCULATION REGIONS and INTERNAL HYDRAULIC JUMPS.
Width predictions show discontinuities. Dilution values should be acceptable.
----------------------------------------------------------------------------------------------
BEGIN MOD141: BUOYANT AMBIENT SPREADING
Discharge is non -buoyant or weakly buoyant.
Therefore BUOYANT SPREADING REGIME is ABSENT.
END OF MOD141: BUOYANT AMBIENT SPREADING
------------------------------------------------------------------------------------------
BEGIN MOD161: PASSIVE AMBIENT MIXING IN UNIFORM AMBIENT
Vertical diffusivity (initial value) = 0.724E-02 m^2/s
Horizontal diffusivity (initial value) = 0.905E-02 m^2/s
The passive diffusion plume is VERTICALLY FULLY MIXED at beginning of region.
Profile definitions:
BV = Gaussian s.d.*sgrt(pi/2) (46%) thickness, measured vertically
= or equal to layer depth, if fully mixed
BH = Gaussian s.d.*sgrt(pi/2) (46%) half -width,
measured horizontally in Y-direction
ZU = upper plume boundary (Z-coordinate)
ZL = lower plume boundary (Z-coordinate)
S = hydrodynamic centerline dilution
C = centerline concentration (includes reaction effects, if any)
TT = Cumulative travel time
Plume Stage 1 (not bank attached):
X Y Z S C BV BH ZU ZL TT
25.79 -30.40 5.59 59.10.339E+01 5.59 10.95 5.59 0.00.15514E+03
31.51 -30.40 5.59 59.2 0.338E+01 5.59 11.01 5.59 0.00 .20688E+03
Cumulative travel time = 206.8846 sec ( 0.06 hrs)
CORMIX prediction has been TERMINATED at last prediction interval.
Limiting time due to TIDAL REVERSAL has been reached.
END OF MOD161: PASSIVE AMBIENT MIXING IN UNIFORM AMBIENT
----------------------------------------------------------------------------------------------
CORMIXI: Single Port Discharges End of Prediction File
111111111111111111111111111111111111111111111111111111111111111111111111111
11111111111111111111
Smith D-7

Appendix E
Responses to NC DEQ Comments on November
2018 Draft
On December 17, 2018, CDM Smith received an e-mail from Mr. David Hill of NC DEQ with the
following comments on the November 2018 draft of this report. Responses to the comments are
embedded below:
■ There are 16 scenarios modeled and summarized in Tables 6-5 through 6-7 but only four
prediction files were provided. Please provide the input and prediction files for all 16
modeled scenarios.
REPLY: For the revised draft report, we have provided a copy of a single CORMIX output file
in Appendix D; this and the remaining output files will be provided to NC DEQ
electronically.
■ Please provide field data to justify the input assumption of unstratified conditions in the
receiving water for the modeled scenarios.
REPLY: Section 4.4.3 has been added to this report to describe the water quality data
collection program that indicated unstratified conditions at the project site. The field data
are documented in Appendix B.
■ Table 6-2 refers to Table 4-1 for ambient inputs, this seems to be in error and appears to
refer to Table 6-1, please clarify.
REPLY: The correct reference should have been Table 6-1 (now Table 7-1 in this draft).
■ Section 3, page 3-7 has a footnote 3 in the Fish Consumption column header but there is no
associated footnote on the page, please clarify.
REPLY: This footnote reference should not have been included, and have been removed
from Table 3-3.
The receiving water was identified as C, Swamp waters. This area has also been classified
by the Division of Marine Fisheries as a Primary Nursery Area (PNA) under 15A NCAC 03R
.0103. According to 15A NCAC 02B .0301, all PNAs are classified as High Quality Waters
(HQW). HQWs have additional requirements listed under 15A NCAC 02B .0224. Please
revise your analysis and modeling taking into account these additional requirements.
REPLY: The revised draft report has been updated to address the additional requirements
of the Primary Nursery Area regulations. Specifically:
• Section 2.3 was added to provide the additional requirements.
Smith E-1

Appendix E • Responses to NC DEQ Comments on November 2018 Draft
• Additional testing was conducted on the concentrate to obtain data on (1) conventional
parameters to address the oxygen consuming wastes and total suspended criteria, and
(2) acute whole effluent toxicity. The results of this testing are included in Section 3.
• Section 3.3.2 describes the results of the acute WET testing, which showed that there
was no acute toxicity measured as a 48-hour LCSO, as required by the Primary Nursery
Area/High Quality Water regulations.
• In Section 3.4, the required dilutions were increased by a factor of two, a required by
the Primary Nursery Area regulations.
• Section 6 was added to address the oxygen consuming waste, TSS and volume
requirements of the Primary Nursery Area/High Quality Water regulations.
■ Supplementary data were provided on the RO treatment of unregulated contaminants.
Please indicate bench test removal efficiencies and anticipated removal efficiencies under
design conditions. Also, please identify any water quality standards or criteria associated
with these parameters, especially in light of the HQW requirements noted above.
REPLY: Section 3.2 provides an improved understanding of the design operating conditions
of the membrane facility based on additional pilot testing since the draft report. The design
operating condition is for the plant to produce permeate between an 89 and 92%
efficiency; the draft report assumed 92% efficiency. The revised draft report has been
updated to provide additional chemistry and acute and chronic WET testing results for the
concentrate from the 92% concentrate (conservative because this concentrate has the
lowest volume and hence the highest concentrations). As described in the response to the
previous comment, the required dilution was increased to comply with the Primary
Nursery Area/HQW requirements.
E-2 Smith