NC0083909_Discharge Alternatives Evaluation_20220526

Rodanthe — Dare County
Reverse Osmosis Water Treatment Plant
Discharge Alternatives Evaluation
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MAY 20, 2022
PREPARED FOR:
Patrick Irwin, Utilities Director
Dare County
600 Mustian Street \����0011"�'ARO,,��%�
Kill Devil Hills NC 27948 .` O •.
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PREPARED BY: 052 36
Ashley M. Kabat, PE % :;GS/�h�,� %r�
Timmons Group %gr''FNGlNEESk • • e•
5410 Trinity Road Suite 102 ��,IFYiMiiKA�P�`\\\� • . *41
Raleigh, NC 27607 TIMMONS GROUP
www.timmons.com
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TIMMONS GROUP

RWS RO Water Treatment Plant Page 2 of 18
Discharge Alternatives Evaluation
Table of Contents
1.0 Executive Summary 4
2.0 Project Background 5
2.1 Purpose of Analysis 6
2.2 Existing Conditions 6
2.2.1 Source Wells 6
2.2.2 Water Treatment Plant 8
2.2.3 Reverse Osmosis Discharge Wastewater Characteristics 8
2.2.4 Whole Effluent Toxicity (WET)Test Assessment 10
3.0 Discharge Alternatives Evaluation 11
3.1 Connect Discharge to a WWTP 11
3.2 Obtain a Non-Discharge Permit 12
3.3 Install Wastewater Treatment 13
3.4 Use Alternative Water Treatment Source 13
3.5 Use Alternative Water Treatment Method 14
3.6 Discharge to a Larger Waterbody and/or Perform a Dilution Model 15
3.7 Combination of Alternatives 16
4.0 Present Worth Cost Analysis 17
4.1 Present Worth Cost Analysis Option 1: Reduce Antiscalant 17
4.2 Present Worth Cost Analysis Option 2: Install Effluent Blending 17
4.3 Present Worth Cost Analysis Option 3: Change Discharge Location 17
5.0 Recommended Alternative 18
5.1 Implementation 18
5.2 Project Schedule 18
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RWS RO Water Treatment Plant Page 3 of 18
Discharge Alternatives Evaluation
Tables
Table 2.2.1— Source Well Water Contaminant Levels
Table 2.2.2— RWS RO Reject Water Discharge Containment Levels
Figures
Figure 2.0— Dare County Water Service Areas
Figure 2.1 — RWS Water Treatment Facility Schematic
Figure 2.2 — Discharge Location Map
Figure 2.3 — Discharge Location Ortho
Figure 2.4— RWS Wells
Figure 3.0— Potential Ocean Discharge Locations
Figure 3.1 — Potential Sound Discharge Location
Appendices
Appendix 2.0— NPDES Permit NC0083909
Appendix 2.1— Source Well Data
Appendix 2.2— EDMR Reports for RWS WTP Discharge
Appendix 2.3—WET Test Reports
Appendix 3.0—Antiscalant Data
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RWS RO Water Treatment Plant Page 4 of 18
Discharge Alternatives Evaluation
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1.0 Executive Summary
Rodanthe Reverse Osmosis WTP
Located on the Outer Banks of North Carolina, the Rodanthe/Waves/Salvo (RWS) Reverse Osmosis (RO)
I Water Treatment Plant (WTP) serves approximately 1,800 customers located in Rodanthe, Waves, and
Salvo, and has a design treatment capacity of 1.25 million gallons per day. The WTP utilizes three wells
for raw water supply and consists of a parallel reverse osmosis treatment system. Rodanthe, Waves and
Salvo are located in Dare County and are bordered by two undeveloped areas, Pea Island National Wildlife
Refuge and the northern Cape Hatteras National Seashore. The closest towns are Avon and Nags Head,
17 and 20 miles from the Rodanthe, Waves, Salvo (RWS) area, respectively. RWS is bordered by the
Pamlico Sound to the west and the Atlantic Ocean to the East.
The RWS WTP discharges RO wastewater to Blackmar Gut, located in the Pamlico Sound under NPDES
permit #NC0083909. This facility has been experiencing consistent whole effluent toxicity (WET) test
failures and has been required to perform a Discharge Alternatives Analysis for review by the NCDEQ. The
goal of this analysis is to determine an alternative that eliminates WET test failures for this facility.
Recommendations
Analysis of all discharge alternatives required for review by the North Carolina Division of Environmental
Quality (NCDEQ) reveal that altering the operation of the antiscalant chemical dosing system may result
in passing toxicity testing. It is recommended that Dare County reduce the dosage of antiscalant by half
of the current dosage and perform further testing to determine if the antiscalant overdose was the source
of the failing WET tests.
Next Steps
Dare County will advise operations staff at the RWS WTP to reduce antiscalant dosage to half of the
current dosage volume immediately. Dare County will engage Avista Membrane Solutions and
subsequently Environment Testing Solutions to perform testing at all previous testing locations. Dare
County will share the results of this alternative with the National Pollutant Discharge Elimination System
(NPDES) Permitting section at NCDEQ and discuss next steps.
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RWS RO Water Treatment Plant Page 5 of 18
Discharge Alternatives Evaluation
2.0 Project Background
Dare County owns and operates the Rodanthe/Waves/Salvo (RWS) Reverse Osmosis (RO) Water
Treatment Plant (WTP) at 23697 NC-12, Rodanthe, NC 27968. This WTP has a design treatment capacity
of 1.25 million gallons per day, and serves approximately 1,800 customers located in Rodanthe, Waves,
and Salvo as shown in Figure 2.0. The WTP utilizes three wells for raw water supply and consists of two
parallel treatment trains, each containing cartridge filters, high-pressure pumps, and a reverse osmosis
filtration units. Chemical feed systems dose fluoride, chlorine disinfectant and other chemicals to the
filtrate. The treated water is stored in a ground-level clearwell and finished water is pumped through
three parallel high service pumps for distribution into the system. A schematic of the RWS Treatment
Facility is shown in Figure 2.1.
Due to the location of this water treatment facility in North Carolina's Outer Banks, raw well water is
brackish with high concentrations of sodium, metals, and total dissolved solids (TDS). Reverse osmosis
lowers the TDS concentrations by removing these impurities for potable water distribution, thus also
creating a reverse osmosis concentrate waste stream. This facility has a monthly average wastewater
discharge of 0.188 MGD. RO reject water is discharged into Blackmar Gut [stream segment 30-22-13],
currently classified SA-HQW waters in subbasin 03-01-55 [HUC: 0301020515] in the Pasquotank River
Basin. This discharge location is shown in Figure 2.2 and Figure 2.3.
Dare County has a National Pollutant Discharge Elimination System (NPDES) permit for this discharge that
expires December 31, 2022 (NC0083909) as shown in Appendix 2.0. During the last permit issuance
(January 12, 2018) a requirement for a Discharge Alternatives Evaluation was added to the permit. This
requirement was added as a result of Whole Effluent Toxicity (WET) test failures for this facility. The
receiving stream is also listed as an impaired waterbody on the North Carolina 303(d) Impaired Waters
List, making it a high priority for the Division of Water Resources(Division).
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TIMMONS GROUP

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RWS RO Water Treatment Plant Page 6 of 18
Discharge Alternatives Evaluation
2.1 Purpose of Analysi
s
The purpose of this evaluation is to determine if there are any economical and technologically feasible
alternatives available for Dare County to eliminate WET test failures for the RO reject water. This
evaluation will address the feasibility of the following alternatives:
1. Connect Discharge to a Wastewater Treatment Plant (WWTP)
2. Obtain a Non-Discharge Permit
3. Install Wastewater Treatment
4. Use an Alternative Water Treatment Source
5. Use an Alternative Water Treatment Method
6. Discharge to a Larger Water Body/Perform a Dilution Model
7. A Combination of the Above Alternatives
The evaluation of alternatives also includes a present value cost analysis for all technologically feasible
options. Viable alternatives will be presented, and an implementation schedule and project timeline will
be constructed for those alternatives.
2.2 Existing Conditions
2.2.1 Source Wells
The RWS RO WTP is designed to treat groundwater from three(3)wells in the Mid-Yorktown Aquifer along
North Carolina Highway 12. Well 1 is located at the RWS WTP site across from Joseph Midgett Road. Well
2 is located 1,983 feet south of the RWS WTP near Sea Sound Road. Well 3 is located 4,488 feet south of
the Well 2 near Holiday Blvd. The location of the three raw water intake wells and the RWS WTP are
shown in Figure 2.4.
The source water wells are monitored for flow (GPM), Chloride (CI), Total Dissolved Solids (TDS),
Conductivity (COND), and Iron (Fe). Comparing the source water with the EPA Primary and Secondary
Drinking Water Standards will reveal which contaminants are primarily removed from the source water.
Well data from July to October of 2021 is represented in Appendix 2.1 and summarized in Table 2.2.1
below.
Table 2.2.1:Source Well Water Contaminant Levels
Well 1 Well 2 Well 3
GPM 523 487 597
CI (mg/L) 593 420 323
TDS(mg/L) 1,472 1,171 1,052
COND(limbos) 2,944 2,342 2,105
Fe(mg/L) 0.03 0.02 0.01
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TIMMONS GROUP

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RWS RO Water Treatment Plant Page 7 of 18
Discharge Alternatives Evaluation
The EPA's Secondary Drinking Water Standards require a maximum contaminant level (MCL)of 250 mg/L
of Chloride,500 mg/L of TDS,and 0.3 mg/L of Iron. Conductivity is not explicitly listed in the EPA standards
but is also important to assess for drinking water standards. Conductivity is directly related to the
presence of inorganic dissolved solids in water. The most common inorganic compounds include chloride,
nitrate, sulfate, phosphate, sodium, magnesium, calcium, iron, and aluminum. The EPA recommends a
conductivity less than 1,000 µmhos/cm for drinking water.
Treating the raw well water to meet drinking water standards requires approximately a 36%reduction of
Chloride, a 56% reduction of Total Dissolved Solids, and a 56% reduction in Conductivity. It is also noted
that well water improves in quality from Well 1 to Well 3, moving further away from the RO WTP. Raw
water makeup consists of approximately 2%water from Well#1, 62%water from Well#2,and 36%water
from Well#3.
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RWS RO Water Treatment Plant Page 8 of 18
Discharge Alternatives Evaluation
2.2.2 Water Treatment Plant
The RWS RO WTP began operation in 1996 and uses a reverse osmosis treatment process to produce
approximately 1.25 million gallons per day of potable water for customers in Rodanthe,Waves,and Salvo.
Two parallel treatment trains are utilized in this facility. Raw well water from the three source wells enters
the facility, is run through cartridge filters then enters the reverse osmosis units utilizing the high-pressure
pumps. Water is then sent to the clearwell, chemicals are added, and the water is distributed into the
County's water distribution system.
A 10-inch pipe conveys raw well water to the cartridge filters. The 10-inch pipe reduces to two 6-inch
parallel pipes that bring water to the treatment trains while a 3-inch bypass line tees off to mix with the
finished water. Antiscalant and sulfuric acid are fed into the pre-treatment stream and the water runs
through a mixing chamber prior to sampling. The two reverse osmosis units each have two stages. Water
is run through each stage and the two parallel trains meet up and become one 8-inch water line. Bypass
feedwater is added into the stream from the 3-inch bypass line. Chemicals including corrosion inhibitor,
chlorine, caustic acid, and fluosilicic acid are fed into the waterline and the water is then run through a
mixing chamber. Conductivity and pH are recorded, and the 8-inch waterline exits the building to the
finished water clearwell on-site. More chlorine is fed into the waterline before the water is sent through
three effluent pumps to distribution system.
The two reverse osmosis units each have a 3-inch wastewater lines that convey RO reject water away
from the filters. The two 3-inch reject lines combine and discharge into an 8-inch PVC wastewater
concentrate drain line to Blackmar Gut.
2.2.3 Reverse Osmosis Discharge Wastewater Characteristics
The process of reverse osmosis for water treatment naturally produces a reject stream containing the
contaminants which are removed to produce the permeate, or potable water. This reject wastewater
contains large molecules with a higher molecular weight that could not pass through the semi-permeable
membrane. These molecules are often salts and heavy metals. The average effluent limits reported for
the RWS DO WTP from January to September of 2021 are reported in Appendix 2.2 and summarized in
Table 2.2.2 below.
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RWS RO Water Treatment Plant Page 9 of 18
Discharge Alternatives Evaluation
Table 2.2.2: RWS RO Reject Water Discharge Containment Levels
Average Maximum Minimum
pH (su) 8.17 8.23 8.11
NH3-N (mg/L) 9.02 11.30 7.55
DO (mg/L) 1.39 1.82 1.06
Total N (mg/L) 10.83 12.52 9.00
Total P(mg/L) 0.77 0.77 0.76
As(µm/L) <5 <5 <5
Conductivity (µmhos/cm) 10427 11000 9480
Copper(µg/L) 11 12 10
Nickel (µg/L) ^'3.33 7 <2
Toxicity(P/F) Fail Fail Fail
Salinity(ppth) 5.88 6.25 5.31
Total Se (µg/L) <10 <10 <10
RES/DISS (mg/L) 6211 6600 5700
Turbidity(ntu) "2.24 4 <1
Zinc(µg/L) 32.89 50 18
Electronic Discharge Monitoring Reports (EDMR's) summarized above reveal high concentrations of
Ammonia (NH3-N), Total Nitrogen (Total N), Conductivity, and Salinity. Low levels of Dissolved Oxygen
(DO)and failed toxicity tests are also noted. Though conductivity and salinity levels are much higher than
typical wastewater, in comparison to the surface water discharge, the concentrations are lower.
However, the concentrations of each specific types of salt may differ than what is found in Blackmar Gut
and could result in toxicity concerns.
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TIMMONS GROUP

RWS RO Water Treatment Plant Page 10 of 18
Discharge Alternatives Evaluation
2.2.4 Whole Effluent Toxicity (WET)Test Assessment
As a requirement of the National Pollutant Discharge Elimination System (NPDES) permit, Dare County
must conduct toxicity testing of the effluent to be discharged. The EPA uses toxicity tests to evaluate
effluent for its potential toxicity to the receiving waters and the organisms in it. The whole effluent toxicity
(WET) test imposes a permit limitation on a whole effluent effect rather than a pollutant-specific
limitation.
The acute WET test subjects a specific organism to the effluent sample and records survival, growth, and
fecundity in a 24-hour static test. The testing organism used for this facility is Mysidopsis bahia (Mysids)
as these organisms are usually found in costal waters. The effluent concentration for this facility where
there should be no significant acute mortality is 90% effluent. Environmental Testing Solutions, Inc. is
contracted to perform the WET testing for this facility. The most recent four WET test reports are attached
for reference in Appendix 2.3.
The average mean mortality of the most recent four WET tests is 70.6%. As required by the EPA Mysid
Survival, Growth, and Fecundity Toxicity Tests method, dissolved oxygen is controlled in the sample to
stay above 4.0 mg/L. This is shown on the WET Tests reports from ETS. Chemical analysis of the initial
and final dissolved oxygen limits during the test show an average dissolved oxygen concentration of 7.86
mg/L during testing.
The RWS RO WTP is consistently failing WET tests with the Mysids at 90% effluent. Mysids are the
appropriate organism to be utilized for WET testing in coastal waters classified at saltwater(S),therefore
use of a different test organism is not recommended. The following two methods should be analyzed to
prevent WET test failures:
1. Increase sample dilution based on dilution modeling or dilution/mixing of effluent prior to
discharge,
2. Investigate added chemicals in the water treatment process for toxicity.
These two methods will be further discussed in the discharge alternatives evaluation.
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RWS RO Water Treatment Plant Page 11 of 18
Discharge Alternatives Evaluation
3.0 Discharge Alternatives Evaluation
3.1 Connect Discharge to a WWTP
Piping or trucking the RO reject water to an existing WWTP is an option that could allow elimination of a
local discharge. The two closest WWTPs in proximity to Rodanthe WTP are Jennette's Pier WWTP to the
north and Kinnakeet Shores WWTP to the south.
Jennette's Pier WWTP is approximately 24 miles north of the Rodanthe RO WTP and treats an average
daily flow of 14,640 gallons per day (GPD). The method of disposal utilized at Jennette's Pier is high-rate
infiltration and reclaimed water for toilet flushing. This WWTP will not be a suitable option to connect
the Rodanthe RO reject water to because the average daily flow of wastewater from Rodanthe WTP is
119,028 GPD, greatly exceeding the capacity of Jennette's Pier. The methods of disposal utilized at this
WWTP, high-rate infiltration and reclaimed water toilet flushing are also unsuitable utilizations for
wastewater high in salinity as discussed in Section 3.2.
Kinnakeet Shores WWTP is approximately 18 miles south of the Rodanthe RO WTP and treats and average
daily flow of 350,000 GPD. The method of disposal utilized at Kinnakeet Shores WWTP is reclaimed water
irrigation. This WWTP treats domestic wastewater to reclaimed water standards utilizing an extended
aeration process. High salinity wastewater would adversely affect this biological treatment process and
would significantly reduce removal efficiency resulting in limit violations for this WWTP. The type of
wastewater treatment and disposal utilized at this WWTP is not suitable for treating and disposing of RO
reject water. This facility has also been placed on a sewer moratorium as of October 13, 2021 and does
not have the capacity to accept additional flow at this time.
Cape Hatteras RO WTP is located approximately 27 miles south of the RWS RO WTP and treats an average
daily flow of 0.52 MGD (0.70 MGD max). Reverse osmosis wastewater is continuously discharged and
blended with wastewater from two anion exchange units and three pressure sand filters. Wastewaters
are combined in a 240,000-gallon holding settling basin and subsequently discharged through a
submerged diffuser located approximately 100 feet offshore into the Pamlico Sound. As this facility treats
and discharges wastewater with similar pollutant loadings, adding RO reject wastewater from the RWS
RO WTP to mix and discharge with the wastewater generated at the Cape Hatteras WTP is the most
feasible option for connecting to a local WWTP. However,this option is not further discussed due to the
extensive infrastructure required to convey the wastewater 27 miles south on the Outer Banks. Pumping
and hauling the wastewater to this facility is also not feasible for the amount of flow being produced at
this facility.
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RWS RO Water Treatment Plant Page 12 of 18
Discharge Alternatives Evaluation
3.2 Obtain a Non-Discharge Permit
Obtaining a Non-Discharge permit is an option that must be considered prior to allowing a discharge of
treated effluent. A Non-Discharge permit allows treated effluent to be applied to the soil surface and
infiltrated through the soil profile for further treatment before mixing with groundwater. This is the
preferred method over discharging to surface waters, due to the additional treatment occurring in the
soil.
A Non-Discharge system must meet minimum effluent standards to be in compliance and is not suitable
for all types of wastewater pollutant loads. Surface disposal of reverse osmosis reject water is not
recommended due to the high salinity of the effluent water. The source wells and water treatment plant
are located in a coastal area,therefore the source water is high in salinity which must be removed during
the reverse osmosis treatment process, resulting in concentrated RO reject water that is very high in salts.
Irrigation of water high in salts can adversely affect vegetation growth and soil structure based on the
type and amount of salts present. Surface application of treated wastewater in costal areas can be a
viable option due to the sandy soils with high hydraulic conductivity. However, irrigating water high in
salts can reduce the inherent high rate of infiltration found in these soils. Sodium can adversely affect soil
structure by causing swelling and soil dispersion which results in plugging of the soil pores. When the soil
surface is repeatedly wetted and dried as is the case with irrigation or a wet/dry infiltration basin,surface
crusting can occur and further reduce permeability.
Irrigation of water with high salt content can stunt vegetation growth, and ultimately kill vegetation which
will further adversely affect soil structure and hydraulic conductivity due to reduced water uptake. High
salt concentrations in irrigation water can have two potential effects on vegetation: a reverse in osmosis
for water uptake, and toxicity. High salt concentration at the roots can cause water to move from the
plant into the soil causing the plant to lose water uptake and experience stress. Sodium adsorption on
plant leaves can cause burning and result in dead leaf tissue.
Waters with approximate total dissolved solids of 1,425-2,850 parts per million (ppm)are considered salty
and waters with total dissolved solids higher than 2,850 ppm are considered very salty. Conductivities
higher than 3,000 µmhos/cm are considered unsuitable for irrigation water. Effluent sampling of the RO
reject water at Rodanthe WTP shows a salinity range of 5,310-6,250 ppm, which is very high relative to
recommended agronomic loading rates. Conductivity ranges from 9,480-11,000 µmhos/cm, well above
the unsuitable limit. It is not recommended to irrigate vegetated areas with water with this load of salts.
Obtaining a Non-Discharge Permit would also allow for the option of treated wastewater reuse. Reusing
the RO reject water in an application that is not applying to the soil surface would include applications
such as toilet flushing, cooling towers, and blowdown water. However, due to the high salt and total
dissolved solids, non-potable reuse is not an option without considering significant additional treatment.
Due to the nature of reverse osmosis reject water and the associated pollutant loads, a Non-Discharge
Permit is not a feasible alternative and will not be analyzed further.
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TIMMONS GROUP

RWS RO Water Treatment Plant Page 13 of 18
Discharge Alternatives Evaluation
3.3 Install Wastewater Treatment
Installing a side-stream wastewater treatment system to treat the RO reject wastewater is not a feasible
option for this facility. The wastewater treatment process would need to be designed to remove high salt
concentrations (Reverse Osmosis or similar), which would still result in a wastewater stream that would
need to be discharged. However, this wastewater would have even higher salt concentrations than the
current waste stream being discharged. This is not a financially feasible or desirable solution for the
facility as it would not solve the WET test failures.
A zero-discharge system utilizing multi-effect distillation and evaporative crystallization for brine
treatment would eliminate the discharge of RO waste stream brine. This system would produce a solid
salt waste product and a liquid waste stream with a much lower concentration of salts that would need
to be discharged. Further research would need to be conducted to analyze the concentrations of all
pollutants in this stream and determine if this wastewater would pass the WET test. However, this
treatment system has an infeasible upfront cost as well as an operation cost due to thermal energy usage
of approximately $4.20 per cubic meter of brine treated. Due to the cost and uncertainty of the quality
of wastewater to be discharged, this treatment system is not a feasible option for the County to explore
further.
The most feasible wastewater treatment solution for this facility is likely diluting the effluent via mixing
with raw well water. Toxicity testing results reveal that effluent shall be diluted to 31.8%-effluent to pass
chronic toxicity testing and 59.6%-effluent to pass acute toxicity testing. Assuming acute testing, and a
90%dilution factor as currently stated in this facility's NPDES permit,approximately 67,518 GPD(average)
would need to be mixed with the effluent prior to discharge. This would require installation of a baffled
holding tank for the RO effluent and raw well water to mix in prior to discharge. A new well would need
to be installed for raw water intake as the existing wells cannot meet the required additional demand.
Additional chemical analysis and WET testing of the well water of the existing wells should be performed
prior to moving forward with this alternative. The present worth cost analysis for this alternative is
presented in Section 4.0.
3.4 Use Alternative Water Treatment Source
The possibility of obtaining water from an alternative source to serve the 1,800 customers located in
Rodanthe,Waves, and Salvo will be explored in this alternative. The maximum daily demand observed in
2020 needed to serve this area is approximately 0.84 MGD. Therefore, a minimum of 1.0 MGD is
recommended to serve this area to allow for flow increases over time and seasonal fluctuations. Due to
the location of Rodanthe,Waves,and Salvo being on a barrier island,only the two closest water treatment
plants will be explored, one to the North and one to the South.
The closest water treatment plant to the north is the North RO plant located at 600 Mustian St., Kill Devil
Hills, NC 27948. This facility is designed to distribute 5.0 MGD to customers in Roanoke Island and all
towns north of the Oregon inlet. This facility would be 31-38 miles north of the customers in Rodanthe,
Waves, and Salvo. Constructing a 30-mile long waterline extension to serve these towns from the North
RO plant is not a feasible option for the County,therefore the available capacity of this WTP to serve the
required demand will not be analyzed.
.••••
•
TIMMONS GROUP

RWS RO Water Treatment Plant Page 14 of 18
Discharge Alternatives Evaluation
The closest water treatment plant to the south is the Cape Hatteras WTP located at 50225 Water
Association Rd., Frisco, NC 27936. This facility is designed to distribute 2.0 MGD and serve approximately
5,500 customers. This facility would be 22-28 miles south of the customers in Rodanthe, Waves, and
Salvo. Constructing a 20-mile long waterline extension to serve these towns from the Cape Hatteras WTP
is not a feasible option for the County,therefore the available capacity of this WTP to serve the required
demand will not be analyzed.
Another alternative water treatment source to be considered is utilizing raw water from a different
source. Alternative raw water intakes for this facility include new well locations, water from the Pamlico
Sound, or water from the Atlantic Ocean. All of these available water sources will have high
concentrations of salt and would require a desalination treatment process like the reverse osmosis
process already being utilized. This alternative will still result in a brine waste stream that would need to
be discharged. Therefore,this alternative would not inherently eliminate the WET test failures and is not
feasible.
3.5 Use Alternative Water Treatment Method
As discussed in the previous section, all sources of water available to serve this facility are high in salinity
and would require a desalination water treatment process. The recommended water treatment process
for this facility is reverse osmosis which is what is currently being utilized. Any water treatment process
for desalination would result in a brine waste stream and would not inherently eliminate the WET test
failures.
The current reverse osmosis treatment system has been studied as a part of this alternative analysis to
determine if any operational changes can be made to eliminate WET test failures. All chemicals added in
the treatment process have been studied and one has been identified as a potential threat to aquatic
health. Antiscalant is added to the raw well water prior to the reverse osmosis units. The antiscalant
shown in Appendix 3.0 is added to eliminate scaling and reduce fouling in the membranes. RO membrane
scaling occurs when particles accumulate on a membrane, causing the membrane's pores to plug. Avista
Membrane Solutions analyzed a number of samples from different locations at the facility and determined
that approximately two times the recommended amount of antiscalant was being added to the raw well
water. This results in unused antiscalant in the RO waste stream in qualities that may be harmful to
aquatic health.
It is recommended that Dare County immediately decrease the dose of antiscalant to half of the current
dosing rate which will result in 2.0 ppm dosage. The County should have WET testing performed to
determine if the decreased dosage of antiscalant has affected the test results.
••
• %
TIMMONS GROUP

RWS RO Water Treatment Plant Page 15 of 18
Discharge Alternatives Evaluation
3.6 Discharge to a Larger Waterbody and/or Perform a Dilution Model
Changing the discharge location and performing dilution modeling to determine if the current effluent
concentrations can pass WET testing with a higher dilution factor will be discussed in this section. Dilution
is the most reliable solution for passing WET testing because it will have a positive effect on the
microorganisms regardless of what the specific contaminant(s) are. A dilution series performed on both
chronic and acute WET testing methods revealed that for each test, a concentration exists where Mysid
will survive. The acute dilution series revealed that a 59.6% concentration of effluent will result in a
passed WET test. The chronic dilution series revealed that a 31.8%concentration of effluent will result in
a passed WET test. Per the current permit issuance, a 90% concentration of effluent is required to be
used with an acute WET testing method.
Although the facility has acute testing required in the current permit issuance, chronic test results were
used in this analysis as they are more conservative and the Division may require changing to this testing
method if a dilution factor is utilized. Two alternatives have been studied to obtain dilution containing a
maximum of 31.8%effluent—Discharging to the ocean and discharging to a location in Blackmar Gut with
a higher dispersion while utilizing a diffuser.
Considering dilution alone, discharging to the ocean is a feasible option that provides more than the
minimum dilution required to pass WET testing. However, this option poses a number of obstacles that
out way the potential benefits. A potential location of discharge to the Atlantic Ocean is shown in Figure
3.0. This location is in the Cape Hatteras National Seashore and is also a recreational beach. Constructing
a discharge pipe in this area is not desirable as it would disturb this otherwise preserved seashore.
Although this option provides significant dilution, it is not feasible to construct and has not been analyzed
any further.
A more feasible option from a constructability standpoint is moving the discharge location in Blackmar
Gut to a location that is deeper and has a slightly higher current. This potential location is shown in Figure
3.1. It is desirable to continue to discharge into this waterbody as it has been previously approved for
discharge and it is not a recreational area. For this location, it may also be possible to utilize portions of
the existing discharge pipe to minimize land disturbance that will occur during construction. The
additional piping will all be located on land owned by the County, so easement acquisition will also be
minimized.
This alternative requires extending the discharge piping south and west approximately 1,000 feet,
installing pipe out into the sound via horizontal directional drill, a custom effluent diffuser with anchoring
supports, and decommissioning the existing discharge location. The Engineer's Opinion of Probable
Construction Cost for this project is approximately $780,000. The present value worth cost analysis will
be discussed in Section 4.0. This alternative will require further study and CORMIX modeling to determine
the dilution factor achieved with this design. Discussions with the Division will be required to determine
what the WET test requirements will be under this design.
•....
• %
TIMMONS GROUP

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RWS RO Water Treatment Plant Page 16 of 18
Discharge Alternatives Evaluation
3.7 Combination of Alternatives
If the selected alternative does not singly eliminate WET test failures, then a combination of alternatives
will be considered. Reducing the antiscalant and performing dilution modeling to discharge to a new
location can be done in conjunction to achieve passing WET tests. It is recommended that the antiscalant
is reduced regardless of its effect on WET test results, therefore this alternative will be performed prior
to initiating work on any other alternative.
After the antiscalant alternative is complete, the dilution modeling to discharge to a new location on
Blackmar Gut may be initiated. However, as stated above and in Section 4.0, this alternative is not
financially feasible for the County to construct, and is,therefore, not recommended at this time.
.••••
• • �•
TIMMONS GROUP

RWS RO Water Treatment Plant Page 17 of 18
Discharge Alternatives Evaluation
4.0 Present Worth Cost Analysis
The basis for which this present value cost analysis has been performed is based on the Division of
Water Infrastructure's requirements for funding. The method used is the total present-worth method
which represents the amount of money needed at the present time to build, operate, and maintain a
system over a specified planning period. The planning period utilized in this analysis is twenty(20)
years. A discount rate of 5.0%was used to convert the future construction, design, and annual
operation and maintenance costs to present worth costs. The provided Engineer's Opinion of Probable
Construction Costs are preliminary estimates and include a 20%contingency. Cost estimates are based
on current prices(2022). Cost estimates must be finalized during final engineering design of any given
alternative.
4.1 Present Worth Cost Analysis Option 1: Reduce Antiscalant
This alternative is a no-cost option for the County. The County may save money by reducing the amount
of antiscalant used in operations or may end up paying an equal amount by using a less concentrated
antiscalant. This alternative does not require a present worth cost analysis.
4.2 Present Worth Cost Analysis Option 2: Install Effluent Blending
Installing the blending tank, new groundwater well,waterline, and all associated piping,valves, and
appurtenances will have an estimated capital cost of$611,000 including engineering and design
services. This alternative will also have additional operation costs for the well pump and well pump
electrical and controls. All of the added infrastructure for this project would come at an added long-
term maintenance cost to the County as well. The annualized O&M cost for this alternative is assumed
to be$15,000. This results in a total present worth of$798,000 for addition of effluent blending at this
facility.
This is not a financially feasible solution for Dare County at this time.
4.3 Present Worth Cost Analysis Option 3: Change Discharge Location
Installing the gravity pipe extension, performing the horizontal directional drill, fabricating and installing
the custom HDPE effluent diffuser with anchoring supports, decommissioning the existing discharge,
and all associated piping,valves, and appurtenances will have an estimated capital cost of$780,000
including engineering and design services. This alternative should not result in additional operation
costs. However, all of the added infrastructure for this project would come at an added long-term
maintenance cost to the County. The annualized O&M cost for this alternative is$5,000. This results in
a total present worth of$843,000 for addition of effluent blending at this facility.
This is not a financially feasible solution for Dare County at this time.
.•••.
• • ••
TIMMONS GROUP

RWS RO Water Treatment Plant Page 18 of 18
Discharge Alternatives Evaluation
5.0 Recommended Alternative
It is highly recommended that Dare Countyproceed with reducingthe amount of antiscalant dosed to the
8 Y
influent well water. This should be done immediately and should be followed by testing to confirm that
the correct amount is being dosed and to confirm the resultant effluent toxicity.
5.1 Implementation
The operations team at the RWS WTP shall reduce the dosage of antiscalant by half of the current amount
immediately. Dare County shall engage Avista Membrane Solutions to retest their water at the sample
locations previously tested to confirm the antiscalant is being dosed properly. After receiving
confirmation from Avista Membrane Solutions,the County shall engage Environmental Testing Solutions
(ETS)to perform acute toxicity testing per their current permit requirements of 90%dilution.
If the new sample passes the acute WET test at 90%effluent concentration, the County should continue
dosing the antiscalant at the reduced rate and monitor future WET tests. If future WET tests consistently
pass, it will be determined that the overdose of antiscalant has caused previous WET test failures. If the
new sample does not pass the acute WET test at 90%effluent concentration or if future WET test do not
consistently pass,further investigation and consideration of another alternative is recommended.
5.2 Project Schedule
Reducing the dosage of antiscalant shall occur immediately. Follow-up testing with Avista Membrane
Solutions will take approximately three (3) months to complete. WET testing will occur at the next
regularly scheduled occurrence per the NPDES permit. This alternative shall take six months to complete
and fully investigate.
••••.
• ••
TIMMONS GROUP

Appendix 2.0 — NPDES Permit NC0083909
....
TIMMONS GROUP

ROY COOPER
IhrIZ
MICHAEL S. REGAN
LINDA CULPEPPER
Water Resources
ENVIRONMENTAL QUALITY
January 12,2018
Mr. Ken Flatt, Utilities Director
Dare County
600 Mustian Street
Kill Devil Hills,NC 27948
Subject: NPDES PERMIT ISSUANCE
NPDES Permit NC0083909
Rodanthe/Waves/Salvo Reverse Osmosis WTP
Class PC-1
Dare County
Dear Mr. Flatt:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached final NPDES discharge permit. This permit is issued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of
Agreement between North Carolina and the U.S. Environmental Protection Agency dated October 15,
2007(or as subsequently amended).
The final permit includes the following significant changes from the existing permit:
➢ Section A. (4)has been added to require electronic submission of effluent data, and a footnote
has been added in Section A. (1). Federal regulations require electronic submittal of all
discharge monitoring reports(DMRs).
➢ Regulatory citations have been added to the permit.
➢ Parameter codes have been updated in Section A. (1).
➢ Outfall map has been updated.
➢ Language has been updated on the Supplement to Permit Cover Sheet based on current NPDES
permit formatting.
➢ The facility address has been updated on the cover sheet and Supplement to Permit Cover Sheet
per the permit renewal application.
➢ Monitoring and limits have been added for total residual chlorine in Section A. (1)per the
current water treatment plant strategy.
➢ Monitoring has been added for turbidity in Section A. (1)per the current water treatment plant
strategy.
➢ The column for weekly average limits in Section A. (1)has been removed.
➢ Limits have been added for Total Nickel and Total Zinc based on a reasonable potential to
exceed water quality standards.
➢ Limits have been removed for Total Selenium and monitoring has been reduced to quarterly
based on a reasonable potential analysis.
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh,NC 27699-1617
919 807 6333 919-807-6389 FAX
hops://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

Mr. Ken Flatt
NC0083909 Issued Permit
> Limits for Total Arsenic have been changed based on a reasonable potential to exceed current
water quality standards.
> Monitoring has been removed for the following parameters in Section A. (1): Total Cadmium,
Total Chromium, Total Cyanide,Total Lead, Total Mercury, and Total Silver. These parameters
did not display a potential to exceed water quality standards.
> Language has been added in Section A. (1) stating"All samples collected should be from a
representative discharge event"per current NPDES permit guidelines.
> The language and footnote for aquatic toxicity monitoring has been updated in Section A. (1),
and the language in Section A. (2)has been updated.
➢ Section A. (3)has been added requiring a discharge alternatives evaluation as the facility has a
history of failed toxicity tests.
The final permit includes the following significant changes from the draft permit:
> Limits for Total Arsenic, Total Nickel, and Total Zinc have been adjusted based on a review of
when the surface water was classified HQW.
Mr. Patrick Irwin, Assistant Utilities Director for Dare County, submitted comments on the draft
permit, which were received by the Division on October 25, 2017. Concerning the comment for Total
Residual Chlorine, as stated during our phone call on December 14, 2017, monitoring and the footnote
for Total Residual Chlorine in Section A. (1)will remain in the permit. The limit is dictated by the
receiving stream;however, monitoring and compliance are only required if chlorine or chlorine
derivatives are added to water that is eventually discharged. Concerning the comment for Total
Arsenic, as stated during our phone call on December 14,2017, after additional review, the permit
history indicates that the HQW classification was not applied in the previous 2010 permit renewal,
stating that the permit and discharge predated the change in surface water classification to HQW.
Therefore,the data analysis for the current renewal has been updated, changing the acute and chronic
(1). Concerningthe comment for the discharge alternatives
limits for total arsenic in Section A. g
evaluation, as stated during our phone call on December 14,2017, the Discharges Alternatives
Evaluation requirement will remain in the permit. This evaluation is due to the Division six (6)months
prior to permit expiration.
Please note that the receiving stream is listed as an impaired waterbody on the North Carolina 303(d)
Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream
data will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream
impairment can be attributed to your facility,then mitigative measures may be required.
Whole Effluent Toxicity test results submitted during the past three years have demonstrated that the
Water Treatment Plant's effluent is showing potential for causing aquatic toxicity in the receiving
stream. As a result,the Rodanthe/Waves/Salvo RO WTP shall perform a Discharge Alternatives
Evaluation as described in Section A. (3)of this permit. This evaluation is being requested to determine
whether there are any economical and technologically feasible alternatives available to the
Rodanthe/Waves/Salvo RO WTP to comply with all NC Water Quality Standards. The permittee will be
given approximately one permit cycle to evaluate and document possible treatment/discharge
alternatives to eliminate aquatic toxicity. The evaluation shall be submitted with the pennittee's next
permit renewal application and will be carefully reviewed by the Division and the results will be used in

Mr. Ken Flatt
NC0083909 Issued Permit
the development of a compliance schedule or possible variance request for the Rodanthe/Waves/Salvo
RO WTP.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings(6714 Mail Service Center, Raleigh,North Carolina 27699-6714). Unless such
demand is made, this permit shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain any other Federal, State, or Local governmental permit that may be required.
If you have any questions or need additional information,please do not hesitate to contact Brianna
Young of my staff at [phone].
racer y,
� C
Linda CulpepperidOr
Interim Director, Division of Water Resources
cc: NPDES Files
Central files
Washington Regional Office
ec: WSS/Aquatic Toxicology Branch
Patrick Irwin, Dare County [[e-mail]]

Permit NC0083909
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Dare County
is hereby authorized to discharge wastewater from a facility located at the
Rodanthe/Waves/Salvo Reverse Osmosis Water Treatment Plant
23697 Highway 12
Rodanthe
Dare County
to receiving waters designated as Blackmar Gut in the Pasquotank River Basin in accordance with
effluent limitations,monitoring requirements, and other conditions set forth in Parts I, II, III and IV
hereof.
This permit shall become effective February 1, 2018.
This permit and authorization to discharge shall expire at midnight on December 31, 2022.
Signed this day January 12,2018.
a Culpepper
terim Director, Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

Permit NC0083909
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge, are hereby
revoked. The exclusive authority to operate this facility arises under this permit. The authority to
operate the facility under previously issued permits bearing this number is no longer effective. The
conditions, requirements, terms and provisions of this permit authorizing discharge under the
NPDES govern discharges from this facility.
Dare County
is hereby authorized to:
1. Continue to operate a Reverse Osmosis water treatment plant with a discharge of reverse osmosis
concentrate reject water. This water treatment plant currently has a design potable flowrate of 1.25
MGD and a maximum, monthly average wastewater discharge of 0.188 MGD. This facility is
located at 23697 Highway 12 in Rodanthe in Dare County. Water and wastewater treatment consists
of:
• Replaceable cartridge filters
• Inhibitor addition system
• Reverse osmosis unit
• Submerged discharge
2. Discharge from said drinking water treatment facility at the location specified on the attached map
into Blackmar Gut [stream segment 30-22-13], currently classified SA-HQW waters in subbasin 03-
01-55 [HUC: 0301020515] in the Pasquotank River Basin.
Page 2 of 8

Permit NC0083909
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of the permit and lasting until expiration,the Permittee is
authorized to discharge through a diffuser from Outfall 001. Such discharges shall be limited and monitored' by
the Permittee as specified below:
EFFLUENT CHARACTERISTICS LIMITS MONITORING REQUIREMENTS
(Parameter Codes) Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location 2
Flow (50050) Continuous Recording E
Dissolved Oxygen 3 (00300) Monthly Grab E, U, D
Salinity (00480) Monthly Grab E, U, D
Conductivity (00094) Monthly Grab E, U, D
pH (00400) Not<6.8 S.U. nor>8.5 S.U. 2/Month Grab E
pH (00400) Monthly Grab U,D
Total Residual Chlorine 4 (50060) 13 '.,g/I 2/Month Grab E
Total Dissolved Solids (70295) Monthly Grab E
Turbidity (00070) Monthly Grab E
Total Arsenic (01002) 10 pg/I 10 pg/I Monthly Grab E
Total Zinc, pg/I (01092) 85.6 pg/L 95.1 pg/L Monthly Grab E
Total Nickel (01067) 8.30 pg/L 74.70 pg/L Monthly Grab E
Ammonia Nitrogen (C0610) Monthly Grab E
Total Copper, pg/I (01042) Quarterly Grab E
Total Selenium (01147) Quarterly Grab E
Total Nitrogen 5 (C0600) Quarterly Grab E
Total Phosphorus (C0665) Quarterly Grab E
WET Monitoring 6 (TGE3E) Monitor&Report Quarterly Grab E
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using the NC DWR's eDMR application system
[see Section A.(4)].
2. E=Effluent,effluent samples shall be collected at point after mixing of effluent wastewater from all treatment units and
prior to discharge,unless otherwise noted.U=Upstream,27 feet north of the discharge outfall,D=Downstream,50 feet
south of the discharge outfall.
3. The permittee may petition the Division to have Dissolved Oxygen(DO)monitoring removed as part of the next permit
renewal application.The facility must demonstrate that the discharge has no significant impact on the DO and temperature
levels in the receiving stream.
4 Limit and monitor only if the facility adds chlorine or chlorine derivatives to water that is eventually discharged. The
Division shall consider all effluent TRC values reported below 50 µg/L to be in compliance with the permit. However.
the Permittee shall continue to record and submit all values reported by a North Carolina certified laboratory including
field certified),even if these values fall below 50 µg/L.
5 Total Nitrogen(TN)=(NO:-N - NO3-N)+TKN.
6. Acute Toxicity 24-hr Pass/fail Monitoring:January,April,July,and October. Permittee shall use mysid shrimp as the test
organism unless another organism of equal or greater sensitivity is deemed more appropriate based on the characteristics
of the discharge and receiving stream. See Special condition A. (2) for details.
All samples collected should be from a representative discharge event.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 3 of 8

Permit NC0083909
A. (2.) ACUTE TOXICITY PASS/FAIL MONITORING ONLY (QUARTERLY)
[15A NCAC 02B .0500 et seq.]
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined in the North
Carolina Procedure Document entitled"Pass/Fail Methodology For Determining Acute Toxicity In A
Single Effluent Concentration" (Revised-December 2010 or subsequent versions). The monitoring shall
be performed as a Mysid Shrimp (Mysidopsis bahia)24 hour static test. The effluent concentration at
which there may be at no time significant acute mortality is 90% (defined as treatment two in the
procedure document). The tests will be performed during the months of January, April, July, and
October. These months signify the first month of each three month toxicity testing quarter assigned to
the facility. Effluent sampling for this testing must be obtained during representative effluent discharge
and shall be performed at the NPDES permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form(MR-1)for the month in which it was performed,using the parameter code
TGE3E. Additionally, DWR Form AT-2 (original)is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine
of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of
the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity(AT)test
form indicating the facility name,permit number, pipe number, county, and the month/year of the report
with the notation of"No Flow" in the comment area of the form. The report shall be submitted to the
Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,then
monthly monitoring will begin immediately. Upon submission of a valid test,this monthly test
requirement will revert to quarterly in the months specified above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Resources indicate potential impacts to the receiving stream,this permit may be re-
opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival and appropriate environmental controls, shall constitute an invalid test and will
require immediate follow-up testing to be completed no later than the last day of the month following
the month of the initial monitoring.
Page 4 of 8

Permit NC0083909
USE OF A DIFFERENT TEST ORGANISM
The permittee may request the use of a different test organism upon documentation that the alternate test
organism would provide an equal or greater level of protection and is appropriate based on the
characteristics of the discharge and receiving stream. Such documentation would consist of one of the
following:
1. For saltwater classified streams, a fathead minnow may be assigned as the acute testing species if
the salinity of the receiving stream at the point of discharge is <5 ppt throughout the tidally
influenced cycle. This determination may be based on the best professional judgment of DWQ
staff or data collection provided by the permittee and approved by DWQ staff. This evaluation
should include vertical profiles of salinity/conductivity measurements at both high tide and low
tide over several 24 hr cycles.
2. Three consecutive"side-by-side"tests with results indicating that the alternate test organism is as
or more sensitive to the facility's effluent. Each test series would consist of two separate toxicity
tests conducted on the same sample of effluent with the length of exposure specified by the permit,
the only difference between the tests being the organism used.
3. An alternate plan developed by the permittee and approved by the Aquatic Toxicology Unit that
demonstrates an equal level of protection is offered by the test organism.
For items 2 and 3, it must also be demonstrated that viable and standardized culture techniques are
available for that organism and standardized testing methodologies have been developed and
validated. This demonstration should meet guidance provided by EPA in Section 6 of EPA-821-R-02-
012, Short Term Methods for Estimating the Acute Toxicity of Effluents and Receiving Waters to
Freshwater Organisms. Fifth Edition, 2002.
A. (3.) DISCHARGE ALTERNATIVES EVALUATION
The Permittee shall assess potential alternatives to eliminate Whole Effluent Toxicity(WET)test failures.
This evaluation shall assess the feasibility of all the following alternatives.
1. Connect discharge to a WWTP: Determine whether the wastewater can be discharged to a wastewater
treatment plant. Approval or disapproval from the plant operator should be acquired.
2. Obtain a Non-discharge permit: Eliminate the surface water discharge by obtaining a non-discharge
permit for spray irrigation, infiltration, or subsurface disposal (on-site drainfield,
infiltration gallery, injection wells).
3. Install Wastewater Treatment: Install improved wastewater treatment to enable the facility effluent to
consistently pass the WET test. If this is not technically feasible or cost prohibitive,
please explain and provide estimated costs.
4. Use Alternative Water Treatment Source: Obtain drinking water from another source(nearest
County, City, or Town or other wells) so the discharge or toxicity problem is
eliminated.
5. Use Alternative Water Treatment Method: Install alternative and/or innovative water treatment
methods or operational improvements that do not produce toxic wastewaters. For
Page 5 of 8
L

Permit NC0083909
example, install a recycle iron/manganese filtration system with no discharge or
combine discharge with WWTP or cooling water effluents.
6. Discharge to a Larger waterbodv/Perform a dilution model: Relocate the facility's discharge to a
larger receiving waterbody to eliminate or reduce toxic impacts to the receiving
waterbody given the increased dilution. If applicable, perform a dilution model to
receive allowance for stream dilution in WET test.
7. Combination of Alternatives: Employ any combination of the alternatives listed above that would
result in eliminating or decreasing toxicity until a more feasible solution becomes
available.
The evaluation shall include a present value of costs analysis for all technologically feasible options as
outlined in the Division's"Engineering Alternatives Analysis Guidance Document."This Document can be
found at: http://portal.ncdenr.org web/wgiswpps/npdes/peniuts.
This evaluation is being requested to determine whether there are any economical and technologically
feasible alternatives available to the Permittee to address aquatic toxicity in the plant effluent. Based upon
the evaluation, please identify viable alternatives and present an implementation schedule and project
timeline for the preferred alternative. The Permittee shall submit the Discharge Alternatives Evaluation to the
Division along with the submission of their next permit renewal application(due 6 months prior to permit
expiration on December 31, 2022)to:
NC DENR/Division of Water Resources/Water Quality Permitting
NPDES,Wastewater Branch
1617 Mail Service Center, Raleigh,NC 27699-1617
A. (4.) ELECTRONIC REPORTING OF MONITORING REPORTS
[NCGS 143-215.1 (b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December
21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit(Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements (Supersedes Section D. (2.)and Section E. (5.) (a)I
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report (eDMR)internet application.
Monitoring results obtained during the previous month(s)shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring
Page 6 of 8

Permit NC0083909
data and submit DMRs electronically using the interne. Until such time that the state's eDMR
application is compliant with EPA's Cross-Media Electronic Reporting Regulation(CROMERR),
permittees will be required to submit all discharge monitoring data to the state electronically using
eDMR and will be required to complete the eDMR submission by printing, signing, and submitting one
signed original and a copy of the computer printed eDMR to the following address:
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband access,
then a temporary waiver from the NPDES electronic reporting requirements may be granted and
discharge monitoring data may be submitted on paper DMR forms(MR 1, 1.1, 2, 3)or alternative forms
approved by the Director. Duplicate signed copies shall be submitted to the mailing address above. See
"How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility,on the last day of the month following the
commencement of discharge.
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act(CWA) Section 316(b)Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see"How to Request a
Waiver from Electronic Reporting"section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the time of
each electronic submission. The permittee should use the EPA's website resources to identify the initial
recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity for
receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each
type of electronic submission and for each state. Instructions on how to access and use the appropriate
electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting
Rule is found at: https://www.federalregister.gov/documents/2015/10/22/2015-24954/nationa1-
pollutant-discharge-elimination-sv stem-npdes-electronic-rehortine-rule.
Electronic submissions must start by the dates listed in the"Reporting Requirements"section above.
3. How to Request a Waiver from Electronic Reporting
Page 7 of 8

Permit NC0083909
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to the
Division. Requests for temporary electronic reporting waivers must be submitted in writing to the
Division for written approval at least sixty(60) days prior to the date the facility would be required
under this permit to begin submitting monitoring data and reports. The duration of a temporary waiver
shall not exceed 5 years and shall thereupon expire. At such time, monitoring data and reports shall be
submitted electronically to the Division unless the permittee re-applies for and is granted a new
temporary electronic reporting waiver by the Division. Approved electronic reporting waivers are not
transferrable. Only permittees with an approved reporting waiver request may submit monitoring data
and reports on paper to the Division for the period that the approved reporting waiver request is
effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http://deq.nc.gov/about'divisions/water-resources/edmr
4. Signatory Requirements 'Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)l
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II, Section
B. (11.)(b). A person, and not a position,must be delegated signatory authority for eDMR reporting
purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account
and login credentials to access the eDMR system. For more information on North Carolina's eDMR
system, registering for eDMR and obtaining an eDMR user account,please visit the following web
page:
htt p://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL
BE ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or persons
who manage the system, or those persons directly responsible for gathering the information, the
information submitted is, to the best of my knowledge and belief true, accurate, and complete. I am
aware that there are significant penalties for submitting false information, including the possibility of
fines and imprisonment for knowing violations."
5. Records Retention ISupplements Section D. (6.)I
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report.
This period may be extended by request of the Director at any time [40 CFR 122.41].
Page 8 of 8

W I L D L I 1� E R E F =. Y{
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NPDES Permit NC0083909 A
Facility Location
Receiving Stream: Blackmar Gut Stream Class:SA; HQW scale not shown
Stream Segment: 30-22-13 Sub-Basin#: 03-01-55
River Basin: Pasquotank HUC:0301020515 SCALE USGS Quad: Rodanthe
County: Dare 1:24,000 35.59556°,-75.47028°

Appendix 2.1 — Source Well Data
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Appendix 2.2 — EDMR Reports for RWS WTP Discharge
• I•
TIMMONS GROUP

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:01-2021 (January 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
E a
pH DO CNDUCTVY SALINITY
2400 dock su mg/I umhos/cm ppth
3
4
5 0830 7.76 8.56 10600 6.01
6
7
8
9
10
II
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 8.56 10600 6.01
Daily Maximum: 7 76 8.56 10600 6.01
Daily Minimum: 7.76 8.56 10600 6.01
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0 1 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:01-2021 (January 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00094
E E
• F F C
E = I'. tr
E Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
▪ E
t: 16, 11 C Recorder Grab Grab Grab Grab Grab Grab Grab Grab
d e a Y Y
O U F O O C Z' FLOW pH CHLORINE. NH3-N-Conc DO TOTAL hi- TOTAL P-Cone As-TOTAL CNDUCTVY
2400 clock Hrs 2400 clock Hrs Y/B/N mgd su ug/I mg/I mg/I mg/I mg/I ug/I umhos/cm
1 0800 5 0700 10 n 0.067
2 0800 5 0700 10 n 0.065
3 0800 4 0700 10 n 0.05
4 0800 6 0700 10 y 0.043
5 0840 3 0700 10 y 0.037 8.15 8.88 1.82 10.97 0.77 <5 10500
6 0800 5 0700 10 y 0.035
7 0800 6 0700 10 y 0.04
8 0800 7 0700 10 y 0.044
9 0800 4 0700 10 n 0.05
10 0800 3 0700 10 n 0.036
II 0800 7 0700 10 y 0.043
12 0800 5 0700 10 y 0.036
13 0800 5 0700 10 y 0.036
14 0800 6 0700 10 y 0.042
15 0800 8 0700 10 y 0.052
16 0800 3 0700 10 n 0.044 '
17 0800 4 0700 10 n 0.049
78 0800 3 0700 10 n 0.039
19 1010 5 0700 10 y 0.034 8.13
20 0800 4 0700 10 y 0.055
1 21 0800 0 0700 10 y NOFLOW
�2 0800 6 0700 10 y 0.075
23 0800 6 0700 10 n 0.037
24 0800 5 0700 10 n 0.071
25 0800 .5 0700 10 y 0.004
26 0800 6 0700 10 y 0.073
27 0800 0 0700 10 y NOFLOW
28 0800 6 0700 10 y 0.079 -
29 0800 0 0700 10 y NOFLOW
30 0800 6 0700 10 n 0.083
31 0800 4 0700 I(1 n 0.055
Monthly Average Limit: 10
Monthly Average:
0.049071 8.88 1.82 10.97 0.77 0 10500
Daily Maximum:
0.083 8.15 8.88 1.82 10.97 0.77 0 10500
Daily Minimum:
0.004 8.13 8.88 1.82 10.97 0.77 0 10500
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_1_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:01-2021 (January 2021) VERSION: 1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-I ORC HAS CHANGED:No
eDMR PERIOD:01-2021 (January 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
01042 01067 T03E3E 00480 01147 70295 00070 011192
I E a-
E o7.5
F
- E _ m Quarterly Monthly Quarterly Monthly Quarterly Monthly Monthly Monthly
6 a F -
�; _ 6
6 O° o. Grab Grab Grab Grab Grab Grab Grab Grab
c w 5 U Y
C J (- C O O Z' COPPER NICKEL MYSD24PF SALINITY Se-TOTAL RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 clock Hrs YI13/61 ug/1 ug/1 pass/fail ppth ug/1 mg/1 ntu ug/1
1 0800 5 0700 10 n
2 0800 5 0700 10 n
3 0800 4 0700 10 n
I4 0800 6 0700 10 y
5 0840 3 0700 10 y 12 2 FAIL 5.94 <10 6400 1.6 18
6 0800 5 0700 10 y
7 0800 6 0700 10 y
8 0800 7 0700 10 y
9 0800 4 0700 10 n
10 0800 3 0700 10 n
11 0800 7 0700 10 y
12 0800 5 0700 10 y
13 0800 5 0700 10 y
14 0800 6 0700 10 y
15 0800 8 0700 10 y
16 0800 3 0700 10 n
17 0800 4 0700 10 n
18 0800 3 0700 10 n
19 1010 5 0700 10 y
20 0800 4 0700 10 y
21 0800 0 0700 10 y NOFLOW
22 0800 6 0700 10 y
23 0800 6 0700 10 n
24 0800 5 0700 10 n
25 0800 .5 0700 10 y
26 0800 6 0700 10 y
27 0800 0 0700 10 y NOFLOW
28 0800 6 0700 10 y
29 0800 0 0700 10 y NOFLOW
30 0800 6 0700 10 n
31 0800 4 0700 10 n
Monthly Average Limit: 8.3 85.6
Monthly Average: 12 2 5.94 0 6400 1.6 18
Daily Maximum: 12 2 5.94 0 6400 1.6 18
Daily Minimum: 12 2 5.94 0 6400 1.6 18
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_1_2021.pdf)
I

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:01-2021 (January 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
E Monthly Monthly Monthly Monthly
ii Grab Grab Grab Grab
r E
O � z PH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppth
3
4
5 0820 7.86 8.86 12900 7.39
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 8.86 12900 7.39
Daily Maximum: 7.86 8.86 12900 7.39
Daily Minimum: 7.86 8.86 12900 7.39
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENV WTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909 Ver_1.0_1 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:01-2021 (January 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:02/15/2021
Electronically Certified by Chuck Budd on 2021-02-15 13:11:34.177
ORC/Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I certify that this report is accurate and complete to the best of my knowledge.
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part II.E.6 of the
NPDES permit.
Electronically Signed by Chuck Budd on 2021-02-15 13:12:56.658
Permittee/Submitter Signature : * * *Chuck Budd Phone #: [phone] Date
Permittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fines and imprisonment for
knowing violations.
CER l iFilaD LABORATORIES
LAB NAME:Environment 1,Inc. Environmental Testing Solutions,Inc.
CERTIFIED LAB#:37715,10,37797
PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR NC0083909_Ver_1.0_1 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:01-2021 (January 2021) VERSION:1.0 STATUS:Submitted
II
II
II

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:02-2021 (February 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00400
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
E °G
pH DU CNDUCTVY SALINITY
2400 dock su mg/1 umhos/cm ppth
1
2 0825 7.6 11.5 17600 10.4
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Monthly Average Limit:
Monthly Average: 11.5 17600 10.4
Daily Maximum: 7.6 11.5 17600 10.4
Daily Minimum: 7.6 11.5 17600 10.4
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_2_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:02-2021 (February 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00094
I E a
1: E F a
Y 1 _ 8
a E _ . Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E < is
9 e °. Recorder Grab Grab Grab Grab Grab Grab Grab Grab
e a n` a
q u [2 5O C 7 FLOW pH CHLORINE NH3-N-Cone DO TOTAL N- TOTAL P-Cone As-TOTAL CNDUCTVY
2400 clock Hrs 2400 clock Hrs VB/N mgd su ugh mg/I mg/I mg/I mg/I ugh umhos/cm
1 0800 0 0700 10 y NOFLOW
2 0835 6 0700 10 y 0.084 8.15 11.3 1.55 <5 11000
3 0800 0 0700 10 y NOFLOW
4 0800 6 0700 10 y 0.081
5 0800 0 0700 10 y NOFLOW
6 0800 6 0700 10 n 0.077
7 0800 0 0700 10 n NOFLOW
8 0800 7 0700 10 y 0.088
9 0800 4 0700 10 y 0.056
10 0800 5 0700 10 y 0.064
n 0800 5 0700 10 y 0.065
12 0800 4 0700 10 y 0.055
13 0800 3 0700 10 n 0.042
14 0800 4 0700 10 n 0.059
IS 0800 0 0700 10 y NOFLOW
16 0920 9 0700 10 y 0.112 8.06
17 0800 6 0700 10 y 0.079
II 0800 5 0700 10 y 0.061
19 0800 8 0700 10 y 0.103
20 0800 7 0700 10 n 0.092
21 0800 6 0700 10 n 0.083
22 0800 6 0700 10 y 0.081
23 0800 6 0700 10 y 0.076
24 0800 6 0700 10 y 0.082
25 0800 6 0700 10 y 0.077
26 0800 6 0700 10 y 0.08
27 0800 5 0700 10 n 0.07
28 0800 3 0700 10 n 0.036
Mnn.hl,Average Limit: 10
Monthly Average: 0.074043 11.3 1.55 0 11000
Dail}Maximum: (1.112 8.15 11.3 1.55 0 11000
Daily Minimum: 0.036 8.06 11.3 1.55 0 11000
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_2_2021.pdf)
1

11
1 NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:02-2021 (February 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
01042 01067 00480 01147 70295 00070 01092
I E a
I: E i- v I
F
E „ - g
ei
c 1 E Quarterly Monthly Monthly Quarterly Monthly Monthly Monthly
.g E i-'— E. I. Grab Grab Grab Grab Grab Grab Grab
a
e a C.)O :J g .. C .. Z
COPPER NICKEL SALINITY Se-TOTAL RES/DISS TURRIDTY ZINC
2400 clock Hrs 2400 clock Hrs Y/B/N ugh ugh ppth ug/1 mg/1 ntu ug/1
I 08(10 0 0700 10 y NOFLOW
2 0835 6 0700 10 y <2 6.24 6600 1.4 41
3 0800 0 0700 10 y NOFLOW
4 0800 6 0700 10 y
5 0800 0 0700 10 y NOFLOW
6 0800 6 0700 10 n
7 0800 0 0700 10 n NOFLOW
g 0800 7 0700 10 y
9 0800 4 0700 10 y
10 0800 5 0700 10 y
11 0800 5 0700 10 y
12 0800 4 0700 10 y
13 0800 3 0700 (0 n
14 0800 4 0700 10 n
IS 0800 0 0700 10 y NOFLOW
16 0920 9 0700 10 Y
17 0800 6 0700 10 y
15 0800 5 0700 10 y
19 0800 S 0700 10 Y
20 0800 7 0700 10 n
21 0800 6 0700 10 n
u 0800 6 0700 10 y
23 0800 6 0700 10 y
24 0800 6 0700 10 y
25 0800 6 0700 10 y
26 0800 6 0700 10 y
27 0800 5 0700 10 n
28 0800 3 0700 10 n
Monthly Average Limit: 8.3 85.6
Monthly Average: 0 6.24 6600 1.4 41
Daily Maximum: 0 6.24 6600 1.4 41
Daily Minimum: 0 6.24 6600 1.4 41
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_2_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:02-2021 (February 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
ut
PH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppth
2 0820 7.63 11.02 23600 14.2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
1x
19
20
21
22
23
24
25
26
27
2x
Monthly Average Limit:
Monthly Average: 11.02 23600 14.2
Daily Maximum: 7.63 11.02 23600 14.2
Daily Minimum: 7.63
11.02 23600 14.2
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0 2_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:02-2021 (February 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:03/04/2021
Electronically Certified by Chuck Budd on 2021-03-04 11:28:09.022
ORC /Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I certify that this report is accurate and complete to the best of my knowledge.
The penrtittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part II.E.6 of the
NPDES permit.
Electronically Signed by Chuck Budd on 2021-03-04 11:29:17.207
Permittee/Submitter Signature : * * *Chuck Budd Phone #: 252-475 - 5778 Date
Permittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fines and imprisonment for
knowing violations.
CERTIFIED LABORATORIES
LAB NAME:Environment 1,Inc.
CER 1'1NIED LAB#: 10,37715
PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_2_2021.pdf)

1
NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:02-2021 (February 2021) VERSION: 1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:03-2021 (March 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
t- Grab Grab Grab Grab
pH DO CNDUCTVY SALINITY
2400 clock Su mg/I umhos/cm ppth
2 0815 7.59 8.66 21400 12.9
3
4
5
6
7
8
9
10
I
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 8.66 21400 12.9
Daily Maximum: 7.59 8.66 21400 12.9
Daily Minimum:
7.59 8.66 21400 12.9
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver 1.0_3_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:03-2021 (March 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00094
E E
V E .1 iria it
`o
F _ C 8
E a _ 4
E Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
_ E <` l=
i. c & Recorder Grab Grab Grab Grab Grab Grab Grab Grab
u ?..5. m 5 'W- V Y
A U F '6' O O FLOW pH CHLORINE NH3-N-Conc DO TOTAL N- TOTAL P-Cone As-TOTAL CNDUCTVY
2400 clock Hrs 2400 clock Hrs Y/B/N mgd su ugh mg/I mg/1 mg/I mg/I ugh umhos/cm
I 0800 0 0700 10 y NOFLOW
2 0840 6 0700 10 y 0.072 8.17 9.32 1.06 <5 10500
3 0800 0 0700 10 y NOFLOW �I
4 0800 5 0700 10 y 0.059
5 0800 4 0700 10 y 0.056
6 0800 4 0700 10 n 0.05
7 0800 4 0700 10 n 0.047
8 0800 0 0700 10 y NOFLOW
9 0800 7 0700 10 y 0.088
to 0800 0 0700 10 y NOFLOW
n 0800 8 0700 10 y 0.1
12 0800 0 0700 10 y NOFLOW
13 0800 8 0700 10 n 0.11
14 0800 4 0700 10 n 0.052
15 0800 0 0700 10 y NOFLOW
16 1000 6 0700 10 y 0.082 8.08
17 0800 5 0700 10 y 0.066
18 0800 4 0700 10 y 0.051
19 0800 3 0700 10 y 0.032
20 0800 6 0700 10 n 0.075
21 0800 4 0700 10 n 0.052
22 0800 4 0700 10 y 0.051
23 0800 4 0700 10 y 0.052
24 0800 5 0700 10 y 0.062
25 0800 6 0700 10 y 0.078
26 0800 4 0700 10 y 0.05
27 0800 7 0700 10 n 0.088
28 0800 6 0700 10 n 0.083
29 0800 6 0700 10 y 0.082
30 0800 7 0700 10 y 0.097
31 0800 8 0700 10 y 0.105
Monthly Average Limit: 10
Monthly Average: 0.0696 9.32 1.06 0 10500
Daily Maximum: 0.11 8.17 9.32 1.06 0 10500
Daily Minimum: 0.032 8.08 9.32 1.06 0 10500
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_3_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:03-2021 (March 2021) VERSION: 1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:03-2021 (March 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
01042 01067 00480 01147 70295 00070 01092
E E
d E .I m °
2: _ C • a
E 2 a1
E Quarterly Monthly Monthly Quarterly Monthly Monthly Monthly
_ E < i- iE .E
:` O °n Grab Grab Grab Grab Grab Grab Grab
d e W 5 U
CC O t= O C C 7 COPPER NICKEL SALINITY Se-TOTAL RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 clock Hrs Y/BM ug/l ugA ppth ug/I mg/I ntu ug/I
1 0800 0 0700 10 y NOFLOW
2 0840 6 0700 10 y <2 5.96 6500 4 21
3 0800 0 0700 10 y NOFLOW
4 0800 5 0700 10 y
5 0800 4 0700 10 y
6 0800 4 0700 10 n
7 0800 4 0700 10 n
8 0800 0 0700 10 y NOFLOW
9 0800 7 0700 10 y
10 0800 0 0700 10 y NOFLOW
11 0800 8 0700 10 y
12 0800 0 0700 10 y NOFLOW
I 13 0800 8 0700 10 n
14 0800 4 0700 10 n
15 0800 0 0700 10 y NOFLOW
16 1000 6 0700 10 y
17 0800 5 0700 10 y
18 0800 4 0700 10 y
19 0800 3 0700 10 y
20 0800 6 0700 10 n
21 0800 4 0700 10 n
22 0800 4 0700 10 y
73 0800 4 0700 10 y
24 0800 5 0700 10 y
25 0800 6 0700 10 y
26 0800 4 0700 10 y
27 0800 7 0700 10 n
28 0800 6 0700 10 n
29 0800 6 0700 10 y
30 0800 7 0700 10 y
31 0800 8 0700 10 y
Monthly Average Limit: 8.3 85.6
Monthly Average: 0 5.96 6500 4 21
Daily Maximum: 0 5.96 6500 4 21
Daily Minimum: 0 5.96 6500 4 21
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_3_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:03-2021 (March 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Y
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
E °L
pH DO CNDUCTVY SALINITY
2400 dock su mg/1 umhos/cm ppth
1
2 0810 7.49 8.53 21800 13.1
3
4
5
6
7
8
9
10
1
12
13
14
13
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average. 8.53 21800 13.1
Daily Maximum: 7.49 8.53 21800 13.1
Daily Minimum: 7.49 8.53 21800 13.1
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_3_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:03-2021 (March 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:04/07/2021
Electronically Certified by Chuck Budd on 2021-04-07 09:47:46.319
ORC / Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I certify that this report is accurate and complete to the best of my knowledge.
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part II.E.6 of the
NPDES permit.
Electronically Signed by Chuck Budd on 2021-04-07 09:49:32.123
Permittee/Submitter Signature : * * *Chuck Budd Phone #: [phone] Date
Permittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fines and imprisonment for
knowing violations.
CERTIFIED LABORATORIES
LAB NAME:Environment 1,Inc.
CERTIFIED LAB#:10,37715
PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0 3_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:03-2021 (March 2021) VERSION: 1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:04-2021 (April 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
monthly Monthly Monthly Monthly
F Grab Grab Grab Grab
d v
n^ j pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm PPta
1
2
3
4
5
6 0840 7.89 8.83 19000 11.3
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Monthly.Average Limit:
Monthly Average: 8.83 19000 11.3
Daily Maximum: 7.89 8.83 19000 11.3
Daily Minimum: 7.89 8.83 19000 11.3
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No How; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_4_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:04-2021 (April 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
gg 50050 00400 50060 C0610 00300 C0600 C0665 01002 00094
AaiF F
4 E_` a Continuous 2 X month 2 X month MonthlyMonthl• Quarterly
'a E < t- y Q y Quarterly Monthly Monthly
1 t Z a Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a c e d u a'
4' 4 C C ; FLOW pH CHLORINE NH3-N-Cone DO TOTAL N- TOTAL P-Cone As-TOTAL CNDCCTVY
2400 clock Hrs 2400 dock Hes VB/N mgd su ug/1 mg/I mg/1 mg/I mg/1 ug/1 umhos/cm
' I 0800 7 0700 10 y 0.087
2 0800 6 0700 10 n 0.08
3 0800 9 0700 10 n 0.119
4 0800 7 0700 10 n 0.088
5 0800 8 0700 10 y 0.106
6 0850 8 0700 10 y 0.106 8.11 10.52 1.11 12.52 0.77 <5 11000
7 0800 8 0700 10 y 0.109
0 0800 8 070010 y 0.102
9 0800 10 0700 10 y 0.134
'10 0800 7 0700 10 n 0.096
II 0800 7 0700 10 n 0.092
12 0800 5 0700 10 y 0.065
13 0800 6 0700 10 y 0.082
14 0800 6 0700 10 y 0.082
15 0800 6 0700 10 y 0.079
16 0800 7 0700 10 y 0.088
17 0800 7 0700 10 n 0.092
10 0800 7 0700 10 n 0.087
19 0800 6 0700 10 y 0.082
20 0955 7 0700 10 y 0.091 8.15
21 0800 7 0700 10 y 0.085
22 0800 6 0700 10 y 0.084
73 0800 8 0700 10 y 0.104
24 0800 10 0700 10 n 0.124
25 0800 5 0700 10 n 0.068
26 0800 7 0700 10 y 0.089
27 0800 7 0700 10 y 0.088
20 0800 8 0700 10 y 0.099
29 0800 8 0700 10 y 0.1 _
30 0800 8 0700 10 y 0.101
Monthly Average Limit:
10
Monthly Average: 0.093633 10.52 I.11 12.52 0.77 0 11000
Dairy Maximum: 0.134 8.15 10.52 1.11 12.52 0.77 0 11000
Oath Minimum: 0.065
8.11 10.52 I.11 12.52 0.77 0 11000
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation-Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation-Holiday
Discharge Monitoring Report•Copy Of Record(COR_NC0083909_Ver_1.0_4_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-I ORC HAS CHANGED:No
eDMR PERIOD:04-2021 (April 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
I
01042 01067 TGE3E 00480 01147 70295 00070 01092
.8 o .IE O
E
E Quarterly Monthly Quarterly Monthly Quarterly Monthly Monthly Monthly
_ E Q I:,
'a i g O = Grab Grab Grab Grab Grab Grab Grab Grab
d E A d v la
:J 2 O C C z' COPPER NICKEL MYSD24PF SALINITY Se-TOTAL RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 clock Hrs YB/N ug/I ug/I pass/fail ppth ug/I mg/I ntu ug/I
1 0800 7 0700 10 y
2 0800 6 0700 10 n
3 0800 9 0700 10 n
4 0800 7 0700 10 n
5 0800 8 0700 10 y
6 0850 8 0700 10 y 11 6 FAIL 6.25 <10 6600 3 20
7 0800 8 0700 10 y
8 0800 8 0700 10 y
9 0800 10 0700 10 y
10 0800 7 0700 10
II 0800 7 0700 10 n
12 0800 5 0700 10 y
13 0800 6 0700 10 y
14 0800 6 0700 10 y
75 0800 6 0700 10 y
16 0800 7 0700 10 y
17 0800 7 0700 10 n
18 0800 7 0700 10 n
19 0800 6 0700 10 y
20 0955 7 0700 10 y
21 0800 7 0700 10 y
22 0800 6 0700 10 y
23 0800 8 0700 10 y
24 0800 10 0700 10 n
25 0800 5 0700 10 n
26 0800 7 0700 10 y
27 0800 7 0700 10 y
28 0800 8 0700 10 y
29 0800 8 0700 10 y
30 0800 8 0700 10 y
Monthly Average Limit: 8.3 85.6
Monthly Average: 11 6 6.25 0 6600 3 20
Daly Maximum: 11 6 6.25 0 6600 3 20
Daily Minimum: 11 6 6.25 0 6600 3 20
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_4_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:04-2021 (April 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
s"
E Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
` E a
pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppth
3
4
5
6 0845 7.93 9.21 18800 11.2
7
8
9
10
I
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Monthly Average Limit:
Monthly Average:
9.21 18800 11.2
Daily Maximum: 7.93 9.21 18800 11.2
Daily Minimum: 7.93 9.21 18800 11.2
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR NC0083909_Ver_1.0_4 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:04-2021 (April 2021) VERSION: 1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:05/06/2021
Electronically Certified by Chuck Budd on 2021-05-06 09:35:24.025
ORC/Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I certify that this report is accurate and complete to the best of my knowledge.
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part II.E.6 of the
NPDES permit.
Electronically Signed by Chuck Budd on 2021-05-06 09:36:43.124
Permittee/Submitter Signature : * * * Chuck Budd Phone #: [phone] Date
Permittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fines and imprisonment for
knowing violations.
CERTIFIED LABORATORIES
LAB NAME:Environment 1,Inc. Environmental Testing Solutions,Inc.
CERTIFIED LAB#:37715,10,37797
PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver 1.0_4_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:04-2021(April 2021) VERSION:1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:05-2021(May 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 110480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppth
2
3
4 0810 7.85 6.68 20900 12.5
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
r Monthly Average Limit:
Monthly Average: 6.68 20900 12.5
Daily Maximum: 7 85 6.68 20900 12.5
Daily Minimum: 7.85 6.68 20900 12.5
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR NC0083909_Ver_1.0_5_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:05-2021 (May 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 CO600 C0665 01002 00094
I E
11
d E F a e
F _ O 0
E = i
I E Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
_ I a` F : a
u - - O c Recorder Grab Grab Grab Grab Grab Grab Grab Grab
u S.
a w
O V 2 C O O Z FLOW pH CHLORINE NH3-N.Cone DO TOTAL N- TOTAL P-Cone As-TOTAL CNDUCTVY
2400 clock Hrs 2400 clock Hrs YBM mgd su ug/I mg/I mg/I mg/1 mg/1 ug/l umhos/cm
1 0800 11 0600 12 n 0.147
2 0800 8 0630 10.5 n 0.099
3 0800 9 0700 10 y 0.117
4 0820 8 0700 10 y 0.108 8.14 7.55 1.1 <5 9670
5 0800 8 0700 10 y 0.109
6 0800 8 0700 10 y 0.095
7 0800 10 0700 10 y 0.133
8 0800 9 0500 12 n 0.113
9 0800 9 0700 10 n 0.113
10 0800 10 0700 10 y 0.132
u 0800 10 0400 13 y 0.073
42 0800 8 0600 11 y 0.09 1
13 0800 8 0600 11 y 0.092
14 0800 11 0600 II y 0.122
15 0800 11 0600 12 n 0.137
16 0800 10 0700 10 n 0.135
17 0900 11 0600 11 y 0.116 8.11
48 0800 10 0600 11 y 0.124
19 0800 10 0630 10.5 y 0.134
20 0800 10 0630 10.5 y 0.121
21 0800 12 0700 12 y 0.158
22 0800 13 0430 14 n 0.163
73 0800 12 0530 12.5 n 0.131
24 0800 12 0600 12 y 0.132
25 0800 12 0600 12 y 0.153
26 0800 13 0600 13 y 0.163
27 0800 12 0600 12 y 0.126
28 0800 15 0600 15 y 0.191
29 0800 13 0400 14.5 n 0.172
30 0800 12 0500 13 n 0.159
31 0800 12 0500 13 n 0.133
Monthly Average Limit:
ILO
Monthly Average: 0.128742 7.55 1.1 0 9670
Daily Maximum: 0.191 8.14 7.55 1.1 0 9670
Daily Minimum:
0.073 8.11 7.55 1.1 0 9670
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation-Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation-Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_5_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:05-2021 (May 2021) VERSION:1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:05-2021 (May 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
01042 01067 00480 01147 70295 00070 01092
E E m
F
O at
E _ r Quarterly Monthly Monthly Quarterly Monthly Monthly Monthly
E
< F -
.Q C: 1 OO S. Grab Grab Grab Grab Grab Grab Grab
a 0 a"
O U [= 8 8 O 2 COPPER NICKEL SALINITY Se-TOTAL RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 clock Hrs Y/B/N ug/1 ug/1 ppth ug/I mg/1 ntu ug/1
I 0800 11 0600 12 n
2 0800 8 0630 10.5 n
3 0800 9 0700 10 y
4 0820 8 0700 10 y 5 5.42 57011 1.8 44
5 0800 8 0700 10 y
6 0800 8 0700 10 y
7 0800 10 0700 10 y
8 0800 9 0500 12 n
9 0800 9 0700 10 n
10 0800 10 0700 10 y
It 0800 10 0400 13 y
12 0800 8 0600 11 Y
13 0800 8 0600 11 y
14 0800 11 0600 11 y
15 0800 11 0600 12 n
16 0800 10 0700 10 n
17 0900 11 0600 11 y
18 0800 10 0600 11 Y
19 0800 10 0630 10.5 y
20 0800 10 0630 10.5 y
21 0800 12 0700 12 Y
22 0800 13 0430 14 n
23 0800 12 0530 12.5 n
I 24 0800 12 0600 12 y
25 0800 12 0600 12 y
26 0800 13 0600 13 y
I 27 0800 12 0600 12 y
28 0800 15 0600 15 Y
29 0800 13 0400 14.5 n
I30 0800 12 0500 13 n
31 0800 12 0500 13 n
Monthly Average Limit: 8.3 85.6
Monthly Average: 5 5.42 5700 1.8 44
IDaily Maximum: 5 5.42 5700 1.8 44
Daily Minimum: 5 5.42 5700 1.8 44
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
IDischarge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0 5_2021.pdf)
1

I
NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
1 Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
IeDMR PERIOD:05-2021 (May 2021) VERSION:1.0 STATUS:Submitted
ISAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
I
E Monthly Monthly Monthly Monthly
E- t
Grab Grab Grab Grab
a
I �'. ' pH DO CNDUCTVY SALINITY
2400 clock su mg/I Imlhos/cm pplh
I 2
3
4 0805 7.8 6 55 21000 12.6
5
I 6
7
8
I 9
10
1
1 12
13
14
I 15
16
17
I 18
19
20
I 21
22
23
I 24
25
26
I 27
28
29
I 311
31
Monthly Average Limit:
Monthly Average: 6.55 21000 12.6
IDaily Maximum: 7 8 6.55 21000 12.6
Daily Minimum: 7.8 6.55 21000 12.6
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENV WTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
IDischarge Monitoring Report-Copy Of Record(COR_NC0083909_Ver 1.0 5_2021.pdf)
I

INPDES PERMIT NO.:NC0083909 PERMIT VERSION:4_0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:05-2021 (May 2021) VERSION: 1.0 STATUS:Submitted 1
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:06/02/2021
IElectronically Certified by Chuck Budd on 2021-06-02 10:51:20.717
ORC/Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I
I certify that this report is accurate and complete to the best of my knowledge.
IThe permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
Iprovided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part H.E.6 of the
NPDES permit.
IElectronically Signed by Chuck Budd on 2021-06-02 10:52:32.742
Permittee/Submitter Signature: * * *Chuck Budd Phone # : 252-475 - 5778 Date
IPermittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fines and imprisonment for
Iknowing violations.
CERTIFIED LABORATORIES
LAB NAME:Environment 1,Inc.
CERTIFIED LAB#:10,37715
PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_5_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:05-2021 (May 2021) VERSION: 1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:06-2021 (June 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 110480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
°C
r. Z pH DO CNDUCTVY SALINITY
2400 dock su mg/I umhos/cm ppth
0831 8.17 9.22 26500 16.2
2
3
4
5
6
7
9
10
1
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
311
Monthly Average Limit:
Monthly Average: 9.22 26500 16.2
Daily Maximum: 8.17 9.22 26500 16.2
Daily Minimum: 8.17 9.22 26500 16.2
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR NC0083909 Ver_1.0_6 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:06-2021 (June 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50000 C0610 00300 C0600 C0665 01002 00094
E E
I:
F F a
I ` I Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E a i- _ __-
ti O a Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a a X Is s of
O U F O O O T. FLOW pH CHLORINE NH3-N•Cone DO TOTAL N- TOTAL P-Cone As-TOTAL CNDUC VY
2400 dock Hrs 2400 dock Hrs YAM mgd su ug/1 mg/I mg/I mg/I mg/I ug/1 umhos/cm
1 0838 13 0500 13 y 0.165 8.18 9.62 1.45 <5 10600
2 0800 13 0500 13 y 0.158
3 0800 12 0500 13 y 0.139
4 0800 13 0500 13 y 0.145
5 0800 13.5 0400 14.5 n 0.176
6 0800 13 0430 14 n 0.174
7 0800 12.5 0500 13 y 0.135
8 0800 14 0500 14 y 0.174
9 0800 13 0500 13 y 0.152
10 0800 12.5 0500 13 y 0.158
II 0800 14 0500 14 y 0.161
12 0800 14 0400 14 n 0.177
13 0800 13 0400 14.5 n 0.17
14 0800 13 0500 13 y 0.138
15 0920 13 0500 13 y 0.165 8.18
16 0800 13 0500 13 y 0.165
17 0800 13 0500 13 y 0.153
18 0800 14 0500 14 y 0.178
19 0800 16 0400 16 n 0.207
20 0800 13 0400 13 n 0.168
21 0800 14 0500 14 y 0.161
22 0800 13 0500 13 y 0.161
i3 0800 13 0500 13 y 0.138
24 0800 13 0500 13 y 0.157 1
25 0800 15.5 0430 15.5 y 0.202
26 0800 15 0400 16 n 0.19
27 0800 14 0430 14.5 n 0.179
28 0800 15 0500 15 y 0.179
29 0800 14 0400 15 y 0.17
30 0800 15.5 0400 16 y 0.202
Monthly Average Limit: 10
Monthly Average: 0.166567 9.62 1.45 0 10600
Dail}Maximum: 0.207 8.18 9.62 1.45 0 10600
Daly Minimum: 0.135 8.18 9.62 1.45 0 10600
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_6_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:06-2021 (June 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
01042 01067 00480 01147 70295 00070 01092
ii
E E 2! o
g
E F m 8
- ToC
E — _ �
E Quarterly Monthly Monthly Quarterly Monthly Monthly Monthly
ir E a 1
'n Grab Grab Grab Grab Grab Grab Grab
u e U A
a '.� E= O .. O Z' COPPER NICKEL SALINITY Se-TOTAL RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 clock Hrs Y/B/N ug/I ugA ppth ugA mg/I ntu ugA
1 0838 13 0500 13 y 7 5.96 6400 2.5 50
2 0800 13 0500 13 y
3 0800 12 0500 13 y
4 0800 13 0500 13 y
5 0800 13.5 0400 14.5 n
6 0800 13 0430 14 n
7 0800 12.5 0500 13 y
8 0800 14 0500 14 y
9 0800 13 0500 13 y
18 0800 12.5 0500 13 y
11 0800 14 0500 14 y
12 0800 14 0400 14 n
13 0800 13 0400 14.5 n
14 0800 13 0500 13 y
75 0920 13 0500 13 y
16 0800 13 0500 13 y
17 0800 13 0500 13 y
18 0800 14 0500 14 y
19 0800 16 0400 16 n
20 0800 13 0400 13 n
21 0800 14 0500 14 y
22 0800 13 0500 13 y
23 0800 13 0500 13 y
24 0800 13 0500 13 y
25 0800 15.5 0430 15.5 y
26 0800 15 0400 16 n
27 0800 14 0430 14.5 n
28 0800 15 0500 15 y
29 0800 14 0400 15 y
30 0800 15.5 0400 16 y
Monthly Average Limit: 8.3 85.6
Monthly Average:
7 5.96 6400 2.5 50
Daily Maximum: 7 5.96 6400 2.5 50
Daily Minimum: 7 5.96 6400 2.5 50
****No Reporting Reason:ENFRUSE=No How-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_6_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:06-2021 (June 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
E at
pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppth
00823 8.14 9.25 27100 16.6
2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Monthly Average Limit
Monthly Average: 9.25 27100 16.6
Daily Maximum: 8.14 9.25 27100 16.6
Daily Minimum: 8.14 9.25 27100 16.6
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR NC0083909_Ver_1.0_6_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:06-2021 (June 2021) VERSION: 1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:07/07/2021
Electronically Certified by Chuck Budd on 2021-07-07 08:51:27.278
ORC/Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I certify that this report is accurate and complete to the best of my knowledge.
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part II.E.6 of the
NPDES permit.
Electronically Signed by Chuck Budd on 2021-07-07 08:52:33.586
Permittee/Submitter Signature : * * *Chuck Budd Phone #: [phone] Date
Permittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fines and imprisonment for
knowing violations.
CERTIFIED LABORATORIES
LAB NAME:Environment 1,Inc.
CERTIFIED LAB#: 10,37715
PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR_NC0083909 Ver_1.0_6 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:06-2021 (June 2021) VERSION: 1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:07-2021 (July 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
n s`
pH DO CNDUCTVY SALINITY
2400 dock su mg/1 umhos/cm ppth
2
3
4
5
6 0845 7.91 5.81 25900 15.9
7
8
9
10
II
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average:
5.81 25900 15.9
Daily Maximum:
7.91 5.81 25900 15.9
Daily Minimum: 7.91 5.81 25900 15.9
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909 Ver_1.0_7 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:07-2021 (July 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00094
Y E iE a e
1,1 = O tY.g 6 a Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E a ill3 c% O 8 Recorder Grab Grab Grab Grab Grab Grab Grab Grab
2 In 13
n U oG
F O O O 2 FLOW pH CHLORINE NH3-N-Conc DO TOTAL N- TOTAL P-Conc As-TOTAL CNDUCTVY
2400 dock Hrs 2400 clock Hrs 'L a4 mgd su ug/1 mg/1 mg/I mg/I mg/1 ug/1 umhos/cm
1 0800 13.5 0400 15 y 0.16
-.. 2 0800 14 0500 15 y 0.189
3 0800 16 0400 16 n 0.203
4 0800 15.5 0400 16 n 0.2
5 0800 16 0400 16 n 0.179
6 0820 15.5 0400 16 y 0.187 8.15 7.77 1.35 9 0.76 <5 10100
7 0800 15 0400 16 y 0.183
-_ 8 0800 15 0400 16 y 0.157
9 0800 15.5 0400 16 y 0.201
10 0800 15 0400 16 n 0.199
11 0800 15.5 0400 16 n 0.201
12 0800 16 0400 16 y 0.177
13 0800 16 0400 16 y 0.179
14 0800 16 0400 16 y 0.191
15 0800 16 0400 16 y 0.176
16 0800 15 0400 16 y 0.197
17 0800 15.5 0400 16 n 0.202
18 0800 15 0400 16 n 0.173
19 0800 16 0400 16 y 0.176
20 0905 15 0400 16 y 0.157 8.14
21 0800 15 0400 16 y 0.167
22 0800 15 0400 16 y 0.167
23 0800 15.5 0400 16 y 0.201
24 0800 15 0400 16 n 0.191
25 0800 14 0500 15 n 0.178
26 0800 15 0500 15 n 0.18
27 0800 15 0500 15 y 0.18
20 0800 14 0500 15 y 0.173
29 0800 15 0500 15 y 0.18
30 0800 15 0400 16 y 0.198
31 0800 15 0400 16 n 0.19
Monthly Average Limit:
10
Monthly Average. 0.183613 7.77 1.35 9 0.76 0 10100
Daily Maximum:
0.203 8.15 7.77 1.35 9 0.76 0 10100
Daily Minimum: 0.157 8.14 7.77 1.35 9 0.76 0 10100
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation-Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation-Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0 7_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:07-2021 (July 2021) VERSION:1.0 STATUS:Submitted

t PDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:07-2021 (July 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
01042 01067 TGE3E 00480 01147 70295 00070 01092
•
I Ea
d L 51
E- _ G WI _
E 3 _
E Quarterly Monthly Quarterly Monthly Quarterly Monthly Monthly Monthly
E a [- 17, _
II
t°, — C I Grab Grab Grab Grab Grab Grab Grab Grab
e n
'4 O S -__
°G COPPER NICKEL MYSD24PF SALINITY Se-TOTAL RES/DISS TURBIDTY ZINC
C C C Z
2400 clock Hrs 2400 clock Hrs YB/N ug/1 ug/1 pass/fail pplh ug/1 mg/1 MU ug/1
1 0800 13.5 0400 15 y
2 0800 14 0500 15 y
3 0800 16 0400 16 n
4 0800 15.5 0400 16 n
5 0800 16 0400 16 n
6 0820 15.5 0400 16 y 10 <2 FAIL 5.68 <10 5800 <1 42
7 0800 15 0400 16 y
e 0800 15 0400 16 y
9 0800 15.5 0400 16 y
l0 0800 15 0400 16
11 0800 15.5 0400 16 n
12 0800 16 0400 16 y
13 0800 16 0400 16 y
14 0800 16 0400 16 y
15 0800 16 0400 16 y
16 0800 15 0400 16 y
17 0800 15.5 0400 16 n
18 0800 15 0400 16 n
19 0800 16 0400 16 y
20 0905 15 0400 16 y
21 0800 15 0400 16 y
22 0800 15 0400 16 y
23 0800 15.5 0400 16 y
24 0800 15 0400 16
25 0800 14 0500 15 n
26 0800 15 0500 15 n
27 0800 15 0500 15 y
79 0800 14 0500 15 y
29 0800 15 0500 15 y
30 0800 15 0400 16 y
31 0800 15 0400 16 n
Monthly Average Limit: 8.3 85.6
Monthly Average: 10 0 5.68 0 5800 0 42
Daily Maximum: 10 0 5.68 0 5800 0 42
Daily Minimum: 10 0 5.68 0 5800 0 42
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation-Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation-Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_7_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:07-2021 (July 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
E °C
pH DO CNDL'CTVY SALINITY
2400 clock su mg/1 umhos/cm ppth
1
2
3
4
5
6 0850 7.93 5.35 25700 15.8
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
it
Monthly Average Limit:
Monthly Average: 5.35 25700 15.8
Daily Maximum: 7.93 5.35 25700 15.8
Daily Minimum: 7.93 5.35 25700 15.8
x***No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR NC0083909_Ver_1.0_7_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:07-2021 (July 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:08/04/2021
Electronically Certified by Chuck Budd on 2021-08-04 10:26:23.322
ORC / Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I certify that this report is accurate and complete to the best of my knowledge.
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part II.E.6 of the
NPDES permit.
Electronically Signed by Chuck Budd on 2021-08-04 10:27:50.704
Permittee/Submitter Signature: * * *Chuck Budd Phone # : 252 -475 - 5778 Date
Permittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fines and imprisonment for
knowing violations.
CERTIFIED LABORATORIES
LAB NAME:Environment 1,Inc. Environmental Testing Solutions,Inc.
CER 111'1ED LAB#:37715,10,37797
PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_7_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:07-2021 (July 2021) VERSION:1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:08-2021 (August 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
E - -
Grab Grab Grab Grab
E °C
pH DO CNDUCTVY SALINITY
2400 clock su mg/I unthos/cm ppth
3 0808 7.89 5.95 33400 20.9
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
211
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 5.95 33400 20.9
Daily Maximum: 7.89 5.95 33400 20.9
Daily Minimum: 7.89 5.95 33400 20.9
***No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_8_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:08-2021 (August 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00094
I
l.. E F in
d n O 5E = ? 4
8 r. E Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E a iz y
u O k Recorder Grab Grab Grab Grab Grab Grab Grab Grab
E a U ,14A U [-' O O C . FLOW pH CHLORINE NH3-N•Conc DO TOTAL N• TOTAL P-Conc An•TOTAL CNDUCTVY
2400 clock Hrs 2400 clock Hrs YB/N mgd su ug/1 mg/1 mg/1 mg/1 mg/I ug/1 umhos/cm
I 0800 14 0500 15 n 0.184
2 0800 14.5 0500 15 y 0.167
3 0830 13.5 0500 14 y 0.145 8.23 8.44 1.71 <5 11000
4 0800 14 0500 15 y 0.153
5 0800 15 0500 15 y 0.161
6 0800 15.5 0400 16 y 0.202
7 0800 14 0400 16 n 0.176
8 0800 14 0500 15 n 0.16
9 0800 14 0500 15 y 0.161
10 0800 14 0500 15 y 0.165
H 0800 14 0500 15 y 0.164
12 0800 15 0500 15 y 0.177
13 0800 15.5 0400 16 y 0.189
14 0800 14.5 0400 16 n 0.19
15 0800 13 0500 14 n 0.173
16 0800 14 0500 15 y 0.178
17 0910 14 0500 15 y 0.179 8.17
18 0800 14 0500 15 y 0.171
19 0800 14 0500 15 y 0.172
20 0800 15 0500 15 y 0.2
21 0800 13.5 0400 16 n 0.16
22 0800 13 0500 14 n 0.164
23 0800 13 0500 14 y 0.151
w 0800 14 0500 I4 y 0.166
25 0800 13 0500 14 y 0.154
26 0800 14 0500 15 y 0.17
27 0800 14 0500 15 y 0.163
28 0800 14 0500 15 n 0.185
29 0800 14 0500 15 n 0.149
30 0800 12 0500 14 y 0.126
31 0800 13 0500 14 y 0.158
Monthly Average Limit: 10
Monthly Average: 0.168161 8.44 1.71 0 11000
Daily Maximum: 0.202 8.23 8.44 1.71 0 11000
Daily Minimum: 0.126 8.17 8.44 1.71 0 11000
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather, NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_8_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:08-2021 (August 2021) VERSION:1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:08-2021 (August 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
01042 01067 00480 01147 70295 00070 01092
E E
— iz F O
E
. E To To Quarterly Monthly Monthly Quarterly Monthly Monthly Monthly
0 e` i- - a
c;; i - n. Grab Grab Grab Grab Grab Grab Grab
E U s`
Z
u v a COPPER NICKEL. SALINITY Se-TOTAL RES/DISS TURRIDTY ZINC
C J F C C C
2400 clock Hrs 2400 clock Hrs YB/N ug/l ug/I ppth ug/I mg/1 mu ug/I
I 0800 14 0500 15 n
2 0800 14.5 0500 15 y
3 0830 13.5 0500 14 y <2 6.17 6100 <1 24
4 0800 14 0500 15 y
5 0800 15 0500 15 y
6 0800 15.5 0400 16 y
7 0800 14 0400 16 n
e 0800 14 0500 15 n
9 0800 14 0500 15 y
I0 0800 14 0500 15 y
II 0800 14 0500 15 y
12 0800 15 0500 15 y
13 0800 15.5 0400 16 y
14 0800 14.5 0400 16 n
15 0800 13 0500 14 n
16 0800 14 0500 15 y
17 0910 14 0500 15 y
18 0800 14 0500 15 y
19 0800 14 0500 15 y
20 0800 15 0500 15 y
21 0800 13.5 0400 16 n
as 0800 13 0500 14 n
23 0800 13 0500 14 y
24 0800 14 0500 14 y
25 0800 13 0500 14 y
26 0800 14 0500 15 y
27 0800 14 0500 15 y
28 0800 14 0500 15 n
29 08W 14 0500 15 n
30 0800 12 0500 14 y
31 0800 13 0500 14 y
Monthly Average Limit: 8.3 85.6
Monthly Average: 0 6.17 6100 0 24
Daily Maximum: 0 6.17 6100 0 24
Daily Minimum: 0 6.17 6100 0 24
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation-Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation-Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_8_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:08-2021 (August 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00400
Monthly Monthly Monthly Monthly
-
Grab Grab Grab Grab
pH DO CNDUCTVY SALINITY
2400 dock su mg/I umhos/cm ppth
1
2
3 0800 7.86 5.52 32700 20.5
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 5.52 32700 20.5
Daily Maximum: 7.86 5.52 32700 20.5
Daily Minimum: 7.86 5.52 32700 20.5
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_8 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER:1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:08-2021 (August 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:09/03/2021
Electronically Certified by Chuck Budd on 2021-09-03 10:04:51.817
ORC /Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I certify that this report is accurate and complete to the best of my knowledge.
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part II.E.6 of the
NPDES permit.
Electronically Signed by Chuck Budd on 2021-09-03 10:06:05.736
Permittee/Submitter Signature: * * *Chuck Budd Phone # : [phone] Date
Permittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fines and imprisonment for
knowing violations.
CER TINTED LABORATORIES
LAB NAME:Environment 1,Inc.
CER I'1.FILD LAB#: 10,37715
' PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0 S_2021.pdt)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:08-2021 (August 2021) VERSION:1.0 STATUS:Submitted

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:09-2021 (September 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
E a
L'. 7 pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppth
3
4
5
6
7 0745 8.22 7.95 29100 17.9
8
9
10
1
12
13
14
15
16
17
18
19
20
21
22
23
24
E5
26
27
28
29
30
Monthly Average Limit:
Monthly Average: 7.95 29100 17.9
Daily Maximum: 8.22 7.95 29100 17.9
Daily Minimum: 8.22 7.95 29100 17.9
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_9 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:09-2021 (September 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00094
I
fi .k E v F in_ 11
E _ . Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E
$ c - - C 'o. Recorder Grab Grab Grab Grab Grab Grab Grab Grab
d e n U a'C :J F O ¢ 7 FLOW pH CHLORINE NH3-N-Conc DO TOTAL N- TOTAL P-Cone As-TOTAL CNDUCTVY
2400 clock Hrs 2400 clack Hrs VB/N mgd su ug/I mg/I mg/1 mg/I mg/1 ug/1 umhos/cm
I 0800 12.5 0500 15 y 0.14
2 0800 14 0500 15 y 0.144
3 0800 17 0500 17 y 0.178
4 0800 14.5 0430 15.5 n 0.177
5 0800 13 0500 14 n 0.159
6 0800 12.5 0500 14 n 0.146
7 0830 12.5 0500 14 y 0.142 8.21 7.74 1.32 <5 9480
e 0800 12.5 0500 14 y 0.134
9 0800 13 0500 14 y 0.147
10 0800 14 0500 15 y 0.169
11 0800 13.5 0500 14 n 0.175
12 0800 12.5 0500 14 n 0.136
13 0800 12.5 0500 14 y 0.125
14 0800 12.5 0500 14 y 0.135
15 0800 12.5 0500 14 y 0.141
16 0800 12.5 0500 14 y 0.127
17 0800 14 0500 14.5 y 0.143
18 0800 14 0500 15 n 0.135
19 0800 12 0600 12 n 0.134
20 0800 I1 0600 12 y 0.11
21 0900 11.5 0600 12 y 0.126 8.19
22 0800 II 0600 12 y 0.119
23 0800 8.5 0600 11 y 0.105
24 0800 12.5 0600 13 y 0.139 _
25 0800 12 0515 12.75 n 0.154
26 0800 11 0600 12 n 0.13 __
27 0800 11 0600 12 y 0.115
28 0800 11 0600 12 y 0.118
29 0800 11.5 0600 12 y 0.124
30 0800 11 0600 12 y 0.111
Monthly Average Limit: 10
Monthly Average: 0.137933 7.74 1.32 0 9480
Daily Maximum: 0.178 8.21 7.74 1.32 0 9480
Daily Minimum:
0.105 8.19 7.74 1.32 0 9480
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation-Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation-Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_9_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:09-2021 (September 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
01042 01067 00480 01147 70295 00070 01092
F t- P O -
E =
E Quarterly Monthly Monthly Quarterly Monthly Monthly Monthly
E Q F
C: 2 P. O I. Grab Grab Grab Grab Grab Grab Grab
1.1 E - J oe
G F O. O ac
O Z'
COPPER NICKEL SALINITY Se-TOTAL RES/DISS TORRH)TY ZINC
2400 clock Hrs 2400 clock Hrs YB/N ug/1 ug/1 ppth ug/1 mg/1 ntu ug/I
1 0800 12.5 0500 15 y
2 0800 14 0500 15 y
3 0800 17 0500 17 y
4 0800 14.5 0430 15.5 n
5 0800 13 0500 14 n
6 0800 12.5 0500 14 n
7 0830 12.5 0500 14 y <2 5.31 5800 3.9 36
8 0800 12.5 0500 14 y
9 0800 13 0500 14 y
10 0800 14 0500 15 Y
It 0800 13.5 0500 14 n
12 0800 12.5 0500 14 n
13 0800 12.5 0500 14 y
14 0800 12.5 0500 14 Y
15 0800 12.5 0500 14 y
16 0800 12.5 0500 14 y
17 0800 14 0500 14.5 y
IS 0800 14 0500 15 n
19 0800 12 0600 12 n
20 0800 11 0600 12 y
21 0900 11.5 0600 12 y
22 0800 11 0600 12 y
23 0800 8.5 0600 11 y
24 0800 12.5 0600 13 y
25 0800 12 0515 12.75 n
26 0800 11 0600 12 n
27 0800 11 0600 12 Y i
28 0800 lI 0600 12 y
29 0800 11.5 0600 12 y
30 0800 11 0600 12 y
Monthly Average Limit: 8.3 85.6
Monthly Average: 0 5.31 5800 3.9 36
Daily Maximum: 0 5.31 5800 3.9 36
Daily Minimum:
0 5.31 5800 3.9 36
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation-Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation-Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_9_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:09-2021 (September 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
E at
1 z pH DO CNDVCTVY SALINITY
2400 clock su mg/1 umhos/cm Ppth
3
4
5
6
7 0800 8.09 6.28 29400 18.1
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
tO
Monthly.Average Limit:
Monthly Average: 6.28 29400 18.1
Daily Maximum: 8.09 6.28 29400 18.1
Daily Minimum: 8.09 6.28 29400 18.1
****No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver 1.0_9_2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:09-2021 (September 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:10/11/2021
Electronically Certified by Chuck Budd on 2021-10-11 10:15:12.956
ORC/Certifier Signature : Chuck Budd Phone # : 252 - 475 - 5778 Date
I certify that this report is accurate and complete to the best of my knowledge.
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that potentially threatens public health or the environment.
Any information shall be provided orally within 24 hours from the time the permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the permittee becomes aware of the circumstances.The written submission shall be made as required by part II.E.6 of the
NPDES permit.
Electronically Signed by Chuck Budd on 2021-10-11 10:16:47.156
Permittee/Submitter Signature : * * *Chuck Budd Phone # : [phone] Date
Permittee Address:23697 NC Hwy 12 Rodanthe NC 27968 Permit Expiration Date: 12/31/2022
I certify,under penalty of law,that this document and all attachments were prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information submitted.Based on my inquiry of the person or persons who managed the
system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,
accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fmes and imprisonment for
knowing violations.
CER 11141ED LABORATORIES
LAB NAME:Environment 1,Inc.
CERTIFIED LAB#: 10,37715
PERSON(s)COLLECTING SAMPLES:Robert Huggett,Sherri Sarsfield
PARAMETER CODES
Parameter Code assistance may be obtained by visiting https://deq.nc.gov/about/divisions/water-resources/edmr/user-documentation.
FOOTNOTES
Use only units of measurement designated in the reporting facility's NPDES permit for reporting data.
*No Flow/Discharge From Site:YES indicates that No Flow/Discharge occurred and,as a result,no data is reported for any parameter on the DMR for the
entire monitoring period.
**ORC on Site?:ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
***Signature of Permittee:If signed by other than the permittee,then delegation of the signatory authority must be on file with the state per 15A NCAC 2B
.0506(b)(2)(D).
Discharge Monitoring Report-Copy Of Record(COR_NC0083909_Ver_1.0_9 2021.pdf)

NPDES PERMIT NO.:NC0083909 PERMIT VERSION:4.0 PERMIT STATUS:Active
FACILITY NAME:Rodanthe/Waves/Salvo Reverse CLASS:PC-1 COUNTY:Dare
Osmosis WTP
OWNER NAME:Dare County ORC:Charles I Budd ORC CERT NUMBER: 1000252
GRADE:PC-1 ORC HAS CHANGED:No
eDMR PERIOD:09-2021 (September 2021) VERSION:1.0 STATUS:Submitted

Appendix 2.3 — WET Test Reports
•
TIMMONS GROUP

Environmental Testing Solutions, Inc. Invoice
P. O. Box 7565
Asheville, NC 28802 Date Invoice#
Phone # [phone] 1/18/2021 82563
Bill To
Dare County
Mr.Jordan Curles
600 Mustain Street
Kill Devil Hills,NC 27948
P.O.No. Terms Project
Net 30 RWS
Quantity Description Rate Amount
1 Mysidopsis bahia Pass/Fail Toxicity Test 200.00 200.00
Thank you for your business.
Total $200.00

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
January 18, 2021
Mr.Jordan Curies
Dare County Water Department
600 Mustain Street
Kill Devil Hills, NC 27948
ETS Project Number: 15667
Test Start Date: 01-06-21
Facility Tested: Rodanthe/Waves/Salvo WTP
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Result
Test Procedure, Method Number
Code PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test "
EPA-821-R-02-012, Method 2007.0 • J�
All toxicity testing results required as part of your permit must be entered on the Effluent Discharge
Monitoring Form (MR-1)for the month in which it was performed, using the parameter code TGE3E.
Additionally, the DMR Reporting Form AT-2 must be signed and e-mailed or mailed to the following
address:
ATForms.ATB(c�ncdenr.clov
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Please call if you have any questions concerning these results.
Sincerely,
Jim mner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions.ln<nc Fax: [phone].
Effluent Toxicity Report Form -Acute Pass/Fail Date: January 18, 2021
Facility: Dare County Water Department NPDES#: NC 0083909 Pipe#: 001 County: Dare
Rodanthe/Waves/Salvo WTP
Laboratory Performing Test: Environmental Testing Solutions, Inc.,Certificate#037 Comments
Signature of Operator in Responsible Charge(ORC):
ORC Phone/E-mail: - / Project#: 15667
Signature of Laboratory Supervisor:, Sample#: 210106.29
e-Mail to: [e-mail]
Or Mail Original to: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 01-05-21 Organism Tested
Collection Time: 0845
Test Start Date: 01-06-21 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration Control 7.69 7.88
c c pH(S.U.)
X ° Treatment 7.93 8.29
z
° L.. -0
Alkalinity(mg CaCO3/L) 66 In
Salinity(Initial/Adjusted)(ppt) 24.7 5.9/24.9 Control 7.9 8.1
D.O.(mg/L)
Total Residual Chlorine(mg/L) <0.10 Treatment 8.0 8.1
Sample Temp.at Receipt(°C) 0.8
Mortality Replicate Mean Mortality
Treatment 1(Control) A B C D
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A B C D
Concentration
90% 90% 70% 70% 80% 77.5%
Tested
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square t-Stat/ Rank Sum NA PASS
Root transformed data. 1-Tailed Critical NA FAIL X
If the absolute value of the calculated t is less than or equal to the absolute value of the tabular t,check PASS.
If the absolute value of the calculated t is greater than the absolute value of the tabular t,check FAIL.
If all vessels within each treatment have the same response but the treatment two response is greater than the control,check fail.
DWR Report Form AT-2

Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0
Client Rodanthe/Waves/Salvo WTP NPDES# NC0093909
Facility • Outfall 001
Project# 1S(pV} County Dare
Test Concentration(Acute Limit) 90% Dilution mL mL Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to preparation: Sample Dilution water mL
25.0±1.0°C in a warm water bath. Artificial sea salt was added to the sample to raise the salinity to
25.0±1.0 ppt.The sample was then diluted to the test concentration with salt synthetic water. 990 110 1100
reeding Test Initiation or Termination Location Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
°° O) 0 .21 * 0835 t\SS d� 1" B�0tac 240/0(2.2 at-o,l--t.k
24
Termination 00.tJ -24 t'L
'Test organisms were fed in holding 2 to 5 hours prior to test initiation. Test organisms were n t fed during the test.
Chemical Analyses: -Analyst identified for each day,performed pH and dissolved oxygen measurements only. Temperature
and salinity performed at the time of test initiation or termination by the analyst performing the toxicity
Initial Final test. Alkalinity and total residual chlorine performed by the analysts identified on the test specific bench
Concentration sheets and transcribed to this bench sheet.
Analyst t-f-S TS
pH(S.U.)
•ieei 7.81 Chemical analyses:
Dissolved oxygen(mg/L) /�� S• I Parameter Reporting limit Method number Meter Serial number
Control ?9 b
Salt SW *Salinity(ppt) NI- ' ,_4-at pH 0.15.U. SM 4500-He 8-2011 Accumet AR20 93312452
*Alkalinity(mg/L CaCO3) (.ol.0 Dissolved oxygen 1.0 mg/L SM 4500-0 G-2011 Y51 Model 52CE 180104324
*Temperature(°C) 1.5 0 -Ls• 1 Conductivity 14.9 µmhos/cm SM 2510 B-2011 Accumet AR20 93312452
pH(S.U.)
7-Gi3 (�� Salinity ty 1.0 ppt SM 2520 B-2011 V51 PR030 18D304324
Dissolved oxygen(mg/L)
Test b g//O !Y+1 Alkalinity 5.0 mg CaCO3/L SM 2320 B-2011 Accumet AR20 93312452
Concentration *Salinity(ppt) 1`I•ck - .,-k' Total residual 0.1 mgjl ORION 97-70-1977 Accumet A8250 92349123
chlorine
*Temperature(°C) Z5 Z-1-R Temperature 0.1°C SM 2550B-2010 Digital Thermometer t301etnyto%S
100% pH(S.U.) 12 Test Organism Information:
(Salinity Dissolved oxygen(mg/L)Adjusted) 6,0� Organism Source: Aquatic Indicators,Inc.
*Salinity(ppt) -1-x4 al Batch(Al Batch Ab):
Al. Ab oR-oy-it
pH(S.U.) lll•3 Age(1 to 5 days old): 2 bA\t 5
1D0% Dissolved oxygen(mg/L) -q Date organisms were born: (time 0 t•03'it 1100 TO
*Salinity(ppt) organisms were born between was not ot•01.-•\.1
5•� provided by supplier) 0%-(Pk'lk t t 3Q
Conductivity(µmhos/cm) g160 Average transfer volume: <0.25 mL
*Total residual chlorine(mg/L) 4'/6 Transfer bowl information: pH(s.U.)='lrgl Temp.(°C( 1--e,-0
Survival Data (number of living organisms):
Control Test Concentration Statistics: �1
Hours Replicate Replicate Method V t )At, / tJS f
A B C D E F G H t-stat or Rank 1v C
0 10 10 10 10 10 10 10 10
1-tailed Critical JJC
Initiation
24 /0 I O / 0 (0 IIA 31d 3 Zd PASS or FAIL F"( L
Termination
Mean survival: I00 7_ Mean survival: /3--S 7-
Comment codes: d=dead,u=unhealthy,s=stressed

351 Depot Street
Asheville,NC 28801
Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Rodanthe/Waves/Salvo WTP NPDES#: NC0083909 Pipe#: 001 County: Dare
Purchase order:
Species: Americamysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
ii Sample information: (to be completed by sample collector)
Grab sample: / / Sample location: (OD(Pnir4to rap Ira Ir 41
il
Date: /S/2 f Time: Os ys- Volume collected for testing: I (74 I /4 I rPre,
Number of containers filled for testing:
00
Method of transport to laboratory:
Comments:
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
P
f
Sample custody: (to be completed by sample collector and facility personnel)
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE g
,,Sfa��mple collected by:
IFo� I-Iv p�f t-
99 �.� ti Uzi - 0
n�ys-
Print Sip Date and tune
Relinquished by: Received by:
?A N"99eTh t/SJ�t �a�ri«^ Cycles les AZ_____ ti,t-5-2o21
yo4 van
Print Stgn ure Date and time Print Signature Date and time
Relinquished by: Received by:
(....4.(le-: / 1 =3Qgpm
Print Signature Dare and time friar Signature Date and time
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received aatt EATS by:
Print Signature Pate and time Print Signature fate and time
Custody seals int f : -7'- I
ED Sample temperature upon receipt at ETS(°C):
Ye„a N., O.©t-
Samples rec .ed in good condition?:' 1 ry 1
1 •J Total residual chlorine upon receipt at ETS: _
(DPD Presence/Absense Indicator,MDL=0 10 mg/L) Prerant Atrnem
Tracking number: Project numberI 7 1
Sample number: .21 OlO( .29
Comments: (,.1(07235e530y

Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing solutions,Inc. Source: Aquatic Indicators, Inc.
I I I I I I I I I I I I I I I I I I I I
0.54 -
Control Limits (± 2 Standard Deviations)
0.52 - -
•
-
•
0.50 - • • • • • •
- • • • • • • • • • • -
• •
U -
J - -
4t) 0.46 -
0 I II I I I I I I I I 11 I I I I I I I
an
J 0.65 I I I I I I I I I I I I I I I I r r I I
0 0.60 - Warning Limits
s
00
0.55 - -
0.50 - •..¢ • • • • • • • • • • • • • • • • •
0.45 -
11 -
0.40 - -
I 1 1 1 I 1 I 1 1 1 1 1 1 1 1 1 1 1 1 1
0a.19 09.19 06.19 11.19 06.19 05.19 0319 ��10 0A10 03.LP AO1P ��:.°��L���1.�111.E ��-L��61P�31�0�1P�y:L1
111
06 01 0a 09 10 11 11 01 01 03 0Q 0$ 06. 01. pi, 09 10 1ti� O1
Test date
II • 48-hour LCso=median lethal concentration. An estimation of the potassium chloride concentration
which is lethal to 50%of the test organisms in 48-hours(calculated using ToxCalc).
Central Tendency(mean logarithmic LC50 converted to anti-logarithmic values)
Control Limits (mean logarithmic LC50±2 standard deviations converted to anti-logarithmic values)
I II
1/111
_�... Laboratory Warning Limits(mean logarithmic LC50±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LC50±SA 10 converted to anti-logarithmic values,
11 SA 10=10th percentile of CVs reported nationally by USEPA)
ntered and

Ii
Environmental Testing Solutions, Inc. Invoice
IIP. O. Box 7565
Asheville, NC 28802 Date Invoice#
111 Phone# [phone] 4/19/2021 83941
Bill To
Dare County
I' Mr.Jordan Curles
600 Mustain Street
Kill Devil Hills,NC 27948
II
IIP.O.No. Terms Project
II Net 30 RWS
Quantity Description Rate Amount
I� I Mysidopsis bahia Pass/Fail Toxicity Test 200.00 200.00
II
Il
Thank you for your business.
Total $200.00

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
April 19, 2021
Mr.Jordan Curies
Dare County Water Department
600 Mustain Street
Kill Devil Hills, NC 27948
ETS Project Number: 15905
Test Start Date: 04-07-21
Facility Tested: Rodanthe/Waves/Salvo WTP
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Result
Test Procedure, Method Number
Code PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test v
EPA-821-R-02-012, Method 2007.0 /�
All toxicity testing results required as part of your permit must be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGE3E.
Additionally,the DMR Reporting Form AT-2 must be signed and e-mailed or mailed to the following
address:
ATForms.ATB c(�ncdenr.gov
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Please call if you have any questions concerning these results.
Sincerely,
Jim umner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037,Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

• >F PO Box 7565
Asheville, NC 28802
Phone: [phone]
EnvironmentalTesdng Solutions Inc. Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: April 19, 2021
Facility: Dare County Water Department NPDES#: NC 0083909 Pipe#: 001 County: Dare
Rodanthe/Waves/Salvo WTP
Laboratory Performing Test: Environmental Testing Solutions, Inc.,Certificate#037 Comments
Signature of Operator in Responsible Charge(ORC): .
ORC Phone/E-mail: �- // Project#: 15905
Signature of Laboratory Supervisor: C 4 L4%.I1 ...►— Sample#: 210407.31
e-Mail to: [e-mail]/
Or Mail Original to: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 04-06-21 Organism Tested
Collection Time: 0910
Test Start Date: 04-07-21 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration Control 7.89 7.75
c c pH(S.U.)
X . o ° Treatment 7.89 8.25
x
o t°- -o
m c
Alkalinity(mg CaCO3/L) 73 v, w
Salinity(Initial/Adjusted)(ppt) 24.6 6.6/25.1 Control 7.8 7.8
D.O. (mg/L)
Total Residual Chlorine(mg/L) <0.10 Treatment 7.7 7.9
Sample Temp.at Receipt('C) 1.7
Mortality Replicate Mean Mortality
Treatment 1(Control) A B C D
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A B C D
Concentration
Tested 90% 80% 80% 80% 80% 80.0%
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square t-Stat/ Rank Sum NA PASS .
Root transformed data. 1-Tailed Critical NA FAIL X
If the absolute value of the calculated t is less than or equal to the absolute value of the tabular t,check PASS.
If the absolute value of the calculated t is greater than the absolute value of the tabular t,check FAIL.
If all vessels within each treatment have the same response but the treatment two response is greater than the control,check fail.
DWR Report Form AT-2

. __._ Page 1 of 1. ,
Acute Pass/Fail Whole Effluent Toxicity Test, Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0 .t4
Client Rodanthe/Waves/Salvo WTP NPDES# NC0 93lit N C- 00 s oS
Facility Outfall 001
Project# ‘SROC County Dare
Test Concentration(Acute Limit) 90% Dilution mL mL Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to preparation: Sample Dilution water mL
25.0±1.0°C in a warm water bath.Artificial sea salt was added to the sample to raise the salinity to
25.0±1.0 ppt. The sample was then diluted to the test concentration with salt synthetic water. 990 110 1100
Feeding Test Initiation or Termination Location Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
Initiation 0�\-131•l•\ O g IDr, 11So )1( 1. C 6..A_ "LA(An.IN u t 1►
24
Tea mina r;on tta-o i•1•‘ I\5‘
'Test organisms were fed in holding 2 to 5 hours prior to test initiation.Test organisms were nit fed during the test.
Chemical Analyses: -Analyst identified for each day,performed pH and dissolved oxygen measurements only. Temperature
and salinity performed at the time of test initiation or termination by the analyst performing the toxicity
Initial Final test Alkalinity and total residual chlorine performed by the analysts identified on the test specific bench
Concentration sheets and transcribed to this bench sheet.
Analyst /---tS Kt)
pH(S.U.) -l ,,i c\ -1.l S Chemical analyses:
Dissolved oxygen(mg/L) .C -.i Parameter Reporting limit Method number Meter Serial number
-
Control p
Salt SW *Salinity(ppt) 11` c C -K.() pH 0.1 S.U. SM 4500-H+8-2011 Accumet AR20 93312452
*Alkalinity(mg/L CaCO3) .mot 5 Dissolved oxygen 1.0 mg/L SM 4500-0 G-2011 YSI Model 52CE 180104324
*Temperature(°C) is o ems.\ Conductivity 14.9 µmhos/cm SM 2510 B-2011 Accumet AR20 93312452
pH(S.U.) y 629 Zy" Salinity 1.0 ppt SM 2520 B-2011 Y51 PR030 180104324
Dissolved oxygen(mg/L) 1 Alkalinity 5.0 mg CaCO3/L SM 2320 8-2011 Accumet AR20 93312452
Test 4.7 7.
Concentration *Salinity(ppt) Total residual,-S•\ �S'\ chlorine tt 0.1 mg/L ORION 97-70-1977 Aumet A8250 92349123
*Temperature(°C) AS•'t AS A) Temperature 0.1°C SM 25508-2010 Digital Thermometer 130/446155
100% pH(S.U.) .1- Test Organism Information:
(salinity Dissolved oxygen(mg/L)Adjusted) 3,6 Organism Source: Aquatic Indicators,Inc.
*Salinity(ppt) ZS,1 Batch(Al Batch Ab): 04-05-21
pH(S.U.) 6"Z Age(1 to 5 days old): L 5 (SA
100% Dissolved oxygen(mg/L) e Date organisms were born: (time 04-04-21 1200 to
*Salinity were born between was not
Salinity(ppt) G.b 04-05-21 1130
provided by supplier)
Conductivity(pmhos/cm) Average transfer volume: <0.25 mL
i0(/)00
*Total residual chlorine(mg/L) 40.1 E) Transfer bowl information: pH(s.U.)='1.g S Temp.(°c)= 'LS.0
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours Method Replicate Replicate v IS\AL
S\AL i r)SP
A B C D E F G H
t-stat or Rank 0 C
0 10 10 10 10 10 10 10 10 1-tailed Critical tJt`Initiation
24 (O f u ( (� /Q ° ._ 2 L. PASS or FAIL F"t'( L.
Termination
Mean survival: (Q4 1• Mean survival: Z0 7.
Comment codes: d=dead,u=unhealthy,s=stressed
SOP AT41-anvidnn S-Fvhihie CTus 2

,: 47. 351 Depot Street
Asheville,NC 28801
Phone: [phone]
Fax: [phone]
N.
_ Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Rodanthe/Waves/Salvo WTP NPDES#: NC0083909 Pipe#: 001 County: Dare
Purchase order:
1 Species: Americamysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
(
Sample information: (to be completed by sample collector)
Grab sample:, t Sample location:lonref",i4}E r((1(1''�'�t .�' vee1� r,
Date: "] (j-,2 r Time: Oq I Volume collected for testing: (C4) j 14 I- u
Number of containers filled for testing: 0(1 e
Method of transport to laboratory: (
Comments:
F
r
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory. r
S
fl
Sample custody: (to be completed by sample collector and facility personnel) ,,
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE k
i;
Sample collected by: a
eab vitalrif oabo� v
,,
Prim &gt tun: Rite and timo
F
Relinquished by: Received by:
'gob Ifv�gP ' G ('_t`J/)trQ-p�-`_ 4/6`1n'�I FC f(�l.•.P 044 m.14 Pi
Pnnt Signal ��nd time Print Signature Dale and time
Relinquished by: Received by:
4
Prim Signature Date and time Pont Signature Date and time
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
° + ° 4rd " iy r40 - IA - ou
Pont Signature Date and time Pant Signature Date and time
Custody seals intact?: P - _ Sample temperature upon receipt at ETS(°C): 'a' {
Yes No Not used
Samples received in good condition?:1' -
Ye. No Total residual chlorine upon receipt at ETS: _
NOVResent Absent
LU A ,.��.i (DPD Presence/Absense Indicator,MDL=0.10 mg/L)
Tracking number: 1•� d L�' UI 1,C1.2+
Project number: ( Q
number:(( Sample number: O-1t$ J
Comments:

Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc. Source: Aquatic Indicators, Inc.
1 1 I 1 I I I I I I I I I I 1 I I I I I
0.54 - -
Control Limits (± 2 Standard Deviations)
0.52 - -
•
• �
0.50 - • • • • • • -
- • • • • • • • • •
0.48 -
Y
J -to 0.46 - -
0 1 I 1 1 I I I 1 I I i I I I I i 1 I I I
in
V
J 0.65 1 1 I 1 I I I I I I I I I 1 I I I I I I
L-
0 0.60 - Warning Limits
s -
ob _ ................................... ............ ....... _.,,....... .................................,. _
Cr
0.55 - -
0.40 - -
1 1 1 1 1 1 1 1 1 1 1 i 1 L 1 I I I 1 I
11190919OS1903.19O1 LO00y003:10011005:LOO.LLO O LOs1LO1�LO061003100�10Oy11O: O111O6:L1
09' 10 1'1' )2' 01- 0'L- 03' OR- OS' 06' 01 08- 09' 10' 11' NI 01- 0y 03- Or
Test date
• 48-hour LC50=median lethal concentration. An estimation of the potassium chloride concentration
which is lethal to 50%of the test organisms in 48-hours(calculated using ToxCalc).
—..::. Central Tendency(mean logarithmic LC50 converted to anti-logarithmic values)
— Control Limits (mean logarithmic LC50±2 standard deviations converted to anti-logarithmic values)
—...,_.,... Laboratory Warning Limits(mean logarithmic LC50±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LC50±SA 10 converted to anti-logarithmic values,
5A 10=10th percentile of CVs reported nationally by USEPA)
red
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Environmental Testing Solutions, Inc. Invoice
P. O. Box 7565
Asheville, NC 28802 Date Invoice#
Phone # [phone] 7/25/2021 85435
Bill To
Dare County
Mr.Jordan Curies
600 Mustain Street
Kill Devil Hills,NC 27948
P.O.No. Terms Project
Net 30 Aquatic Toxicity
Quantity Description Rate Amount
3 24-Hour Pimephales Pass/Fail Acute 200.00 600.00
Thank you for your business.
Total $600.00

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
July 24, 2021
Mr.Jordan Curles
Dare County Water Department
600 Mustain Street
Kill Devil Hills, NC 27948
ETS Project Number: 16122
Test Start Date: 07-14-21
Facility Tested: Rodanthe/Waves/Salvo WTP
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Test Procedure, Method Number Result
Code PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test v
EPA-821-R-02-012, Method 2007.0 /�
All toxicity testing results required as part of your permit must be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGE3E.
Additionally, the DMR Reporting Form AT-2 must be signed and e-mailed or mailed to the following
address:
ATForms.ATBncdenr.qov
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Please call if you have any questions concerning these results.
Sincerely,
0144/414*-4-1---__Jim Smner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Envlronmc°wi Teeing S°hud°°L Inc. Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: July 24, 2021
Facility: Dare County Water Department NPDES#: NC 0083909 Pipe#: 001 County: Dare
Rodanthe/Waves/Salvo WTP
Laboratory Performing Test: Environmental Testing Solutions, Inc., Certificate#037 comments
Signature of Operator in Responsible Charge(ORC):
ORC Phone/E-mail: Project#: 16122
Signature of Laboratory Supervisor: Sample#: 210714.27
e-Mail to: ATForms.ATBPncdenr.gov
Or Mail Original to: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 07-13-21 Organism Tested
Collection Time: 0930
Test Start Date: 07-14-21 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration Control 7.81 7.90
c c pH(S.U.)
X o u Treatment 7.98 8.31
� X
ro c
Alkalinity(mg CaCO3/L) 100 cn W
Salinity(Initial/Adjusted)(ppt) 24.9 5.8/24.8 Control 7.8 7.8
D.O.(mg/L)
Total Residual Chlorine(mg/L) <0.10 Treatment 7.6 7.8
Sample Temp.at Receipt(°C) 3.7
Mortality Replicate Mean Mortality
Treatment 1(Control) A B C D
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A B C D
Concentration
Tested 90% 60% 60% 60% 70% 62.5%
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square t-Stat/ Rank Sum NA PASS
Root transformed data. 1-Tailed Critical NA FAIL X
If the absolute value of the calculated t is less than or equal to the absolute value of the tabular t,check PASS.
If the absolute value of the calculated t is greater than the absolute value of the tabular t,check FAIL.
If all vessels within each treatment have the same response but the treatment two response is greater than the control,check fail.
DWR Report Form AT-2

Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test, Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0
Client Rodanthe/Waves/Salvo WTP NPDES# NC0093909
Facility Outfall 001
Project# 116 111L County Dare
Test Concentration(Acute Limit) 90% Dilution mL mL Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to preparation: Sample Dilution water mL
25.0±1.0°C in a warm water bath.Artificial sea salt was added to the sample to raise the salinity to
25.0±1.0 ppt.The sample was then diluted to the test concentration with salt synthetic water. 990 110 1100
Feeding Test Initiation or Termination Location Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
Initiation * o�Doo y % SSo �I IF te.uot.J -LI c-is'1.21 01-PI-IA 3
Cn•►tt•Z, 1100 tt (i
24
'Test organisms were fed in holding 2 to 5 hours prior to test initiation.Test organisms were not fed during the test.
Chemical Analyses: •Analyst identified for each day,performed pH and dissolved oxygen measurements only. Temperature
and salinity performed at the time of test initiation or termination by the analyst performing the toxicity
Initial Final test.Alkalinity and total residual chlorine performed by the analysts identified on the test specific bench
Concentration sheets and transcribed to this bench sheet.
Analyst P-10 �J'
pH(S.U.) " J
.eil 4-go Chemical analyses:
Dissolved oxygen(mg/L) Parameter Parameter Reporting limit Method number Meter Serial number
Control
Salt SW *Salinity(ppt) \I 1 pH 0.1 S.U. SM 4500-H,B-2011 Accumet AR20 93312452
*Alkalinity(mg/L CaCO3) 1 00 Dissolved oxygen 1.0 mg/L SM 4500-0 G-2011 Y51 Model 52CE 18D104324
*Temperature 1°C) 0 •5 Conductivity 14.9 pmhos/cm 5M 2510 8-2011 Accumet AR20 93312452
pH(S.U.) —y Q e Salinity 1.0 ppt SM 2520 B-2011 Y51 PRO30 18D104324
Dissolved oxygen(mg/L) -t ' Alkalinity 5.0 mg CaCO3/L SM 2320 B-2011 Accumet AR20 93312452
Test
Concentration *Salinity(ppt) Total residual
�.�• •L�,Ci chlorine 0.1 mg/L ORION 97-70-1977 Accumet AB250 92349123
*Temperature 1°C) -Lc-1 IS,L. Temperature 0.1°C SM 25508-2010 Digital Thermometer
pH(S.U.)100% ,9'8 Test Organism Information:
(salinity Dissolved oxygen(mg/L) `/ Organism Source: fit` Aquatic Indicators,Inc.
T Adjusted) ' M
*Salinity(ppt) 14.({ Batch(Al Batch Ab): civ. 0,0 12-21
pH(5.U.) Afg Age(1 to 5 days old):
'2-3DrjyS
Dissolved oxygen(mg/L) Date organisms were born: (time
100% .4-9- g 11-21 1200 to
*Salinity(ppt) organisms were born between was not S•& provided by supplier) to A-12
21 1130
Conductivity(µmhos/cm) f�O Average transfer volume: <0.25 mL
*Total residual chlorine(mg/L) <0 10 Transfer bowl information: pH(s.u.)= 1 ei(o Temp.(°C)= 1,11,5
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours Method
Replicate Replicate \)1 Si/At- 1 NSt'
A B C D E F G H t-stator Rank N C
0 10 10 10 10 10 10 10 10 1-tailed Critical Nt
Initiation
dbd. to L e0( tag
24 /13 ID f 0 3 PASS or FAIL I`P11 L
Termination
Mean survival: tOQ9- Mean survival: 31 . S 1-
Comment codes: d=dead,u=unhealthy,s=stressed
SOP AT41-Revision 5-Exhibit AT41.2

a
"' 4: �. 351 Depot Street
Asheville,NC 28801
I. i Phone: [phone]
0
Fax: [phone]
EnvironmentatTesting Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
IFacility: Rodanthe/Waves/Salvo WTP NPDES#: NC0083909 Pipe#: 001 County: Dare
Purchase order:
ISpecies: Americamysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24=hour Pass/Fail Acute Parameter code: TGE3E
1 Sample information: (to be completed by sample collector)
Grab sample: Sample location: (-0(1ek(3--f- go-TV,`, �
Date: �' IS—d.t Time: b�3 0Volume collected for testing: 1 (�,4.( it'. °
Number of containers filled for testing: On P .
Method of transport to laboratory:
Comments:
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
Sample custody: (to be completed by sample collector and facility personnel)
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE
Sample collectede�^by:
•
1713-3-1
�'�'1Sia,t;Se411Gg 30
Print Signature Date and time
Relinquished by: Received by:
ZIO ifura,e-t—
A /00 V 1 . - .
Sign e Date and lime Print Signature Date and time
Relinquished by: Received by:
414-y am ZJfri4 -�-'' ' %3•�
Print Signature ZDate and time Print Signature Date and time
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by:Fec
Received at ETS by:
(j�.1 y.tl i.
Print Signature Date and time Print Signature Date and time
Custody seals intact?: © - n Sample temperature upon receipt at ETS(°C):
Yes No Not treed 04"it
Samples received in good condition?: im
_
Yes No Total residual chlorine upon receipt at ETS: _
��y�-y����� (DPD Presence/Absense Indicator,MDL=0.10 mg/L) Pr'''''' Abaent
�
Tracking number: yVJ� a^>{ ,
Project number:102Z-Sample number: 2.!u '1•Z. V
Comments:

Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc Source: Aquatic Indicators, Inc.
1 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1 1 1
0.54 - -
Control Limits (± 2 Standard Deviations)
0.52 -
0.50 - • • • • • • • -
• • • • • • •
0.48 - • •
J
" 0.46 - -
1 I I I 1 I I l I I I I 1 I 1 I 1 1 1 1
V
J 0.65 1 I I I 1 1 1 1 1 1 1 1 I 1 1 1 1 1 1 1
G 0.60 - Warning Limits
00
0.55 - -
0.40 - -
( I I t I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
ti 03�101 OLOA 03 03 oa01 05 05�6sp.�0.01 0$A 09 S" 06;1.031106 010S OyOti o3 01�a 06 OS 05 06.02 p�.0.*�1
Test date
• 48-hour LC50.median lethal concentration. An estimation of the potassium chloride concentration
which is lethal to 50%of the test organisms in 48-hours(calculated using ToxCalc).
Central Tendency(mean logarithmic LC50 converted to anti-logarithmic values)
v... Control Limits (mean logarithmic LC50±2 standard deviations converted to anti-logarithmic values)
—•.-_ •. Laboratory Warning Limits(mean logarithmic LCS0±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LC50±SA 10 converted to anti-logarithmic values,
SA 10=10th percentile of CVs reported nationally by USEPA)
,4 and
nwk by
wed by
❑mUmoet

Environmental Testing Solutions, Inc. Invoice
P. O. Box 7565
Asheville, NC 28802 Date Invoice#
Phone # [phone] 10n9/2021 86760
Bill To
Dare County
Mr.Jordan Curies
600 Mustain Street
Kill Devil Hills,NC 27948
P.O.No. Terms Project
Net 30 Aquatic Toxicity
Quantity Description Rate Amount
3 Mysidopsis bahia Pass/Fail Toxicity Test 200.00 600.00
Mysidopsis bahia Pass/Fail Toxicity Test 500.00 500.00
Thank you for your business.
Total $1,100.00

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
October 14, 2021
Mr.Jordan Curies
Dare County Water Department
600 Mustain Street
Kill Devil Hills, NC 27948
ETS Project Number: 16358
Test Start Date: 10-06-21
Facility Tested: Rodanthe/Waves/Salvo WTP
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Result
Test Procedure, Method Number
Code PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test v
EPA-821-R-02-012, Method 2007.0 J�
All toxicity testing results required as part of your permit must be entered on the Effluent Discharge
Monitoring Form (MR-1)for the month in which it was performed, using the parameter code TGE3E.
Additionally, the DMR Reporting Form AT-2 must be signed and e-mailed or mailed to the following
address:
ATForms.ATBncdenr.gov
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Please call if you have any questions concerning these results.
Sincerely,
Jim Sumner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

°` 3 PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions.Inc. Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: October 14, 2021
Facility: Dare County Water Department NPDES#: NC 0083909 Pipe#: 001 County: Dare
Rodanthe/Waves/Salvo WTP
Laboratory Performing Test: Environmental Testing Solutions, Inc.,Certificate#037 comments
Signature of Operator in Responsible Charge(ORC): .
ORC Phone/E-mail: Project#: 16358
Signature of Laboratory Supervisor: f- 1,„,___.. Sample#: 211006.19
e-Mail to: A orms.ATBCalncdenr.gov
Or Mail Original to: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 10-05-21 Organism Tested
Collection Time: 0945
Test Start Date: 10-06-21 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration pH(S.U. Control 7.83 7.75
X 2 , ) Treatment 7.99 8.16
3 x
COc
Alkalinity /L) 100 � a.,r "�(mg Cac0 a vi
Salinity(Initial/Adjusted)(ppt) 24.9 7.5/25.6 Control 7.8 7.7
D.O. (mg/L)
Total Residual Chlorine(mg/L) � <0.10 Treatment 8.1 7.7
Sample Temp.at Receipt(°C) 0.7
Mortality Replicate Mean Mortality
Treatment 1(Control) A B C D
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A B C D
Concentration
90% 60% 70% 60% 60% 62.5%
Tested
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square t-Stat/ Rank Sum NA PASS
Root transformed data. 1-Tailed Critical NA FAIL X
If the absolute value of the calculated t is less than or equal to the absolute value of the tabular t,check PASS.
If the absolute value of the calculated t is greater than the absolute value of the tabular t,check FAIL.
If all vessels within each treatment have the same response but the treatment two response is greater than the control,check fail.
DWR Report Form AT-2

Page 1of1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0
Client Rodanthe/Waves/Salvo WTP NPDES tt NC0093909
Facility Outfall 001
Project# tl.,'5S R County Dare
Test Concentration(Acute Limit) 90% Dilution ml ml Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to preparation: Sample Dilution water ml
25.0±1.0°C in a warm water bath. Artificial sea salt was added to the sample to raise the salinity to
25.0±1.0 ppt.The sample was then diluted to the test concentration with salt synthetic water. 990 110 1100
Feeding Test Initiation or Termination Location Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
B * 0600 t
Initiation to•0.V. .1 _ OW) t3 �� \ij w►A1cC. -1.Li0O9.IR oti•3o•11 A
24
Termination t o•01.11 031 tiVf\
'Test organisms were fed in holding 2 to 5 hours prior to test initiation.Test organisms were not fed during the test.
Chemical Analyses: •Analyst identified for each day,performed pH and dissolved oxygen measurements only.Temperature
and salinity performed at the time of test initiation or termination by the analyst performing the toxicity
Initial Final test.Alkalinity and total residual chlorine performed by the analysts identified on the test specific bench
Concentration sheets and transcribed to this bench sheet.
Analyst 4,r f.t(
pH(S.U.) 7-s33 ` 7a' Chemical analyses:
Dissolved oxygen(mg/L) g �� Parameter Reporting limit Method number Meter Serial number
-Control C7
Salt sw *Salinity(pot)
�'143 1•, pH 0 S.U. SM 4500-H*B-2011 Accumet AR20 93312452-La•� li
*Alkalinity(mg/L CaCO3) I 00 Dissolved oxygen 1.0 mg/L SM 4500-0 G-2016 YSI Model 52CE 180104324
*Temperature(CC) ZS•1 "LS a4 Conductivity 14.9 µmhos/cm SM 2510 13-2011 Accumet AR20 93312452
pH(S.U.) Y•'r 1 q ,0'�� Salinity 1.0 ppt 5M 2520 B-2011 y5I PRO30 180104324
Dissolved oxygen(mgfL) � + Alkalinity 5.0 mg CaCO3/L SM 2320 8-2011 Accumet AR20 93312452
Test h
Concentration *Salinity(ppt) Total residual
2 a �� chlorine 0.1 mg/L ORION 97-70-1977 Accumet AB250 92349123
*Temperature(°C) ZS.S ^it•�J �
Temperature 0.1°C SM 25508-2010 Digital Thermometer %Sl((2 S
100% pH(S.U.) &Q3 J Test Organism Information:
(salinity Dissolved oxygen(mg/L)Adjusted) (3,,pp0 Organism Source: Aquatic Indicators,Inc.
*Salinity(ppt) tS•b Batch(Al Batch Ab): 10-04-21
pH(S.U.) tp�� Age(1 to 5 days old): "L-b ��S
Dissolved oxygen(mg/L) e Date organisms were born: (time 10-03-21 1200 to
100%
organisms were born between was not
*Salinity(ppt) 7•.S provided by supplier) 10-04-21 1130
Conductivity(pmhos/cm) /(70-0 Average transfer volume: <0.25 mL
*Total residual chlorine(mg/L) <0.)0 Transfer bowl information: pH(s.U.)=1„CA Temp.(°C)= -Ls.0
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours Method
Replicate Replicate v 151)Al. LNSP
A B C D E F G H t-stator Rank AA`\
1�L
0 10 10 10 10 10 10 10 10
Initiation 1-tailed Critical r•X.,
b
24 / ► i 10l,4 3l�( L
it.y� L.
` 4 �l PASS or FAIL FA
Termination +
Mean survival: j 001• Mean survival: 3-1•S 7.
Comment codes: d=dead,u=unhealthy,s=stressed

351 Depot Street
Asheville,NC 28801
Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Rodanthe/Waves/Salvo WTP NPDES#: NC0083909 Pipe#: 001 County: Dare
Purchase order:
Species: Americamysis(Mysidopsis) bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
Sample information: (to be completed by sample collector)
Grab sample: ' Sample location:(o )(eti1 torte..
tTrc f1
Date: (0-S,Z I Time: 09 r"I S Volume collected for testing: I Ga I/ 1-.
Number of containers filled for testing: Cn e
Method of transport to laboratory:
Comments:
Triple rinse sample container with sample before filling. Completely till the sample container with no air space.
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
Sample custody: (to be completed by sample collector and facility personnel)
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE
Sample collected by:
RdSo Nv P,t� a i°/s/z►
95 oq y5—
Pnnt Signmu. Date and time
Relinquished by: Received by:
NV�geir /000 lef OS
Print Signa re Dam and time Print Signature Date and time
Relinquished by: / Received by:
eP
I'nnt StFnaNre Date and time I Print Signature Date and time
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
Fdk,to ,00(0.
Print Signature Date and time Ptint Signature Date and time
Custody seals intact?: `I I Sample temperature upon receipt at ETS(°C): X1 a1L'
Yes No Not used V 7
Samples received in good condition?:'f -
Yon No Total residual chlorine upon receipt at ETS: _
cito ,Q (DPD Presence/Absense Indicator,MDL=0.10 mg/L) ne"onmt nn.en:
Tracking number: �� J�'( 1�
Project numbeib5s8 Sample number: All O0 404
Comments:

F7 7.7' Pr '' Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc, Source: Aquatic Indicators, Inc.
I I I I 1 I 1 I 1 i 1 I I I 1 I I 1 I I
0.54 - -
Control Limits (± 2 Standard Deviations)
0.52 - -
•
0.50 - • • • • • -
- • • • • • • • • -
0.48 • •
J - -
b.0 0.46 - -
in
0 1 I I I i 1 I I I I I I I I I I I I I 1
J0.65 I I I I 1 I I I I I I I I I I I 1 I I I
3
s 0.60 - Warning Limits -
00cr
- -
0.55 - -
0.50 - • .9. .• • • • • • • -
• • • • •
0.40 - -
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
03.03�p.01 5.05 06 ex 01.0l Q6:iv 915 10.0E' iris ti O 0V 6 Ot Oti 30 oa.06 Dy o 6.o ��13 p6.09 9.1C;0 MS-
Test date
• 48-hour LC50=median lethal concentration. An estimation of the potassium chloride concentration
which is lethal to 50%of the test organisms in 48-hours(calculated using ToxCalc).
—.,_�._— Central Tendency(mean logarithmic LCSD converted to anti-logarithmic values)
„a-.R — Control Limits (mean logarithmic LC50±2 standard deviations converted to anti-logarithmic values)
—..—•. Laboratory Warning Limits(mean logarithmic LC50±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LC50±SA 10 converted to anti-logarithmic values,
SA.10=10th percentile of CVs reported nationally by USEPA)
1n
rerca.nd
�amed by
mSum.
at

Environmental Testing Solutions, Inc. Invoice
P. O. Box 7565
Asheville, NC 28802 Date Invoice II
Phone# [phone] 1/21/2020 76973
Bill To
Dare County
Mr.Jordan Curles
600 Mustain Street
Kill Devil Hills,NC 27948
P.O.No. Terms Project
Net 30 Aquatic Toxicity
Quantity Description Rate Amount
3 Mysidopsis bahia Pass/Fail Toxicity Test 200.00 600.00
Thank you for your business.
Total $600.00

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
January 24, 2020
Mr.Jordan Curles
Dare County Water Department
600 Mustain Street
Kill Devil Hills, NC 27948
ETS Project Number: 14788
Test Start Date: 01-08-20
Facility Tested: Rodanthe/Waves/Salvo WTP
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Test Procedure, Method Number Result
Code PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test "
EPA-821-R-02-012, Method 2007.0 • J�
All toxicity testing results required as part of your permit must be entered on the Effluent Discharge
Monitoring Form (MR-1)for the month in which it was performed, using the parameter code TGE3E.
Additionally, the DMR Reporting Form AT-2 must be signed and e-mailed or mailed to the following
aridrPss:
ATForms.ATB(a�ncdenr.gov
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Please call if you have any questions concerning these results.
Sincerely,
��ii Sumner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037,Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

ti_,, f PO Box 7565
Asheville, NC 28802
Phone: [phone]
Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: January 24, 2020
Facility: Dare County Water Department NPDES#: NC 0083909 Pipe#: 001 County: Dare
Rodanthe/Waves/Salvo WTP
Laboratory Performing Test: Environmental Testing Solutions, Inc., Certificate#037 Comments:
Signature of Operator in Responsible Charge(ORC):
ORC Phone/E-mail: Project#: 14788
Signature of Laboratory Supervisor: � ,i Sample#: 200108.19
e-Mail to: ATForms.ATB{alncdenr.gov
Or Mail Original to: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 01-06-20 Organism Tested
Collection Time: 0930
Test Start Date: 01-08-20 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration pH (S.U.) Control 8.06 7.96
X 24.5-h o Treatment 8.02 8.38
t6
Alkalinity(mg CaCO3/L) 120 cn 'L
Salinity(Initial/Adjusted)(ppt) 24.8 7.0/24.1 Control 7.9 7.8
D.O.(mg/L)
Total Residual Chlorine(mg/L) <0.10 Treatment 8.0 7.8
Sample Temp.at Receipt(°C)Fj,Tta 0.8
Mortality Replicate Mean Mortality
Treatment 1(Control) A BCD
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A BCD
Concentration
Tested 90% 70% 50% 50% 70% 60.0%
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square Root t-Stat/ Rank Sum NA PASS
transformed data. 1-Tailed Critical NA FAIL X
If the absolute value of the calculated t is less than or equal to the absolute value of the tabular t,check PASS.
If the absolute value of the calculated t is greater than the absolute value of the tabular t,check FAIL.
If all vessels within each treatment have the same response but the treatment two response is greater than the control,check fail.
DWR Report Form AT-2

Page 1of1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0
Client Rodanthe/Waves/Salvo WTP NPDES# NC 005.'IOck
Facility . Outfall 001
Project# i`1.05 County Dare
Test Concentration(Acute Limit) 90% Dilution mL ml Total volume
Sample was not aerated or treated unless otherwise noted on this form. The sample was warmed to preparation: Sample Dilution water mL
25.0±1.0°C in a warm water bath.Artificial sea salt was added to the sample to raise the salinity to
25.0±1.0 ppt.The sample was then diluted to the test concentration with salt synthetic water. 990 110 1100
Feeding Test Initiation or Termination location Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
0
�n.".^ 0VOile) * °jt 1 AN ►C., Lf, At 20
0101A 0‘•01 zche
21
Termination p1•a•20 13L111 [/.►Jt�t1\"
•Test organisms were fed in holding 2 to S hoots prior to test initiation.Test organisms were norfed during the test.
Chemical Analyses: Test Organism Information:
Initial Final
Concentration Analyst /.12 Organism Source: Aquatic Indicators,Inc.
pH(S.u.) Batch(Al Batch Ab): ®�-OS•2.o
S
•tr1a �.96
Dissolved oxygen(mg/L)Control 1• 6 Age(1 to 5 days old): .3 r)M
Salt sw *Salinity(ppt) gg Date organisms were born: (time
* 'l`,•O ZS*1..... organisms were born between is not t'�
Alkalinity(mg/L CaCO3)
t ZC7 provided by supplier)
°Temperature 1°C) 1.5•0 LS•D Average transfer volume: <0.25 mL
pH(s u.) e4z e 3e Transfer bowl information: pH(S.U.): 1.91
Dissolved oxygen(mg/t)Test ?
t',0 -y 6 Temperature(°t):
Concentration *Salinity(ppt)
au.o ��•ot 14•C1
*Temperature(°c) 1.5 •(] 1.—S \
1
pH(S.u.)
100% Z
(salinity Dissolved oxygen(mg/L)
Adjusted) 6-'0
*Salinity(ppt)
pH(S.U.)
831
Dissolved oxygen(mg/L) �,
100%
*Salinity(ppt)
7.0 •Analyst identified for each day,performed pH,dissolved oxygen and
Conductivity(urnhos/cm) conductivity measurements only.Temperature and salinity performed at the
/0800 time of test initiation or termination by the analyst performing the toxicity test.
*Total residual chlorine{mg/L) ©*f Alkalinity and total residual chlorine performed by the analysts identified on
0 the test specific bench sheets and transcribed to this bench sheet.
Survival Data (number of living organisms):
Control Test Concentration
Hours ,
Replicate Replicate
A B C D E F G H Statistics:
0 C
10 10 10 10 10 10 10 10 Method V` Jj"l rkK)
Ji
Initiation
t-Stat or s,y
14, Srlt $� 4 Rank Sum c,
24 J p 1 O ✓0 IC S S. 1-Tailed
Termination
Critical
Mean survival: )DV.
Mean survival: go
7_ PASS orFAIL rk1
Comment codes: d=dead,u=unhealthy,s=stressed
Comments:
SOP AT41-Revision 4-Exhibit AT41.2

„, to-', r , if r r�' „.
351 Depot Street
Asheville,NC 28801
Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Rodanthe/Waves/Salvo WTP NPDES#: NC0083909 Pipe#: 001 County: Dare
Purchase order:
Species: Antericamysis(Mysidopsis) bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
Sample information: (to be completed by sample collector)
Composite sample: Sample location: Tram i'2 (Once/woe 141
Start date: I- -2o Time: bCIO Q Volume collected for testing: One 3 4 lion / 4 L-
End date: i- 7' 2 0 Time: 0 Q 3 Q Number of containers filled for testing: one.
Number of samples per hour: on e Method of transport to laboratory: cei-A-Y-
Chilled during collection? ye 5 Comments:
If chilled,specify temperature: 4.0° C
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
Sample ct;st.:cly: (to be completed by sampk colic,:tor and:utility personnel)
Sample collected by:
tfob 1.1V3Sei— 04 1�bio-o900-
l/7/20-o430
Print Signatu c Date and time
Relinquished by: Received by:
1-Huy3el UG) I/7/204/0.o _ l'A” .
Print Signait Date and tine Print Signature Date and time
Relinquished by: Received by:
l:oopm l�l•0� "T,c�
737.4"n C„ttle5 ��e% 1-7-Zoto Fe(44.49
Print Signature Date and time Print Signature Dale and time
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
_ pou
Print Signature Date and time Pnnt Signature Date and time
Custody seals intact?: ' - _ Sample temperature upon receipt at ETS(°C):
Yes No Not used 0.6 x--
Samples received in good condition?: F--1 -
Yes No Total residual chlorine upon receipt at ETS: _ 71
p (DPD Presence/Absense Indicator,MDL=0.10 WL) Present Absent
Tracking number: �0 AA�t0Q��-1 'al 1 nt`'�,q
Project number:1`1 66 Sample number: 200106.1 CPI
Comments:

Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions Inc. Source: Aquatic Indicators, Inc.
1 1 I 1 1 1 1 1 I 1 I 1 I 1 I I 1 1 I 1
0.54 - Control Limits (± 2 Standard Deviations)
0.52 - -
• •
0.50 - • -
• • • • •
- • • • • • • • • • •
0.48 - •
40 0.46 - -
I I I I I I 1 I I 1 1 1 I 1 1 1 I I I I
0.65 I I I I I I I I I I I I I I I I I I I I
L
0.60 - Warning Limitsizt
0.55 - -
0.50 - • • • •
•
0.45 - -
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
06.05,O�10 Q�O�10911'10,1311 06�1 Qp,�10a,�105103 05�A,Oti 05,01�6 OQ��09��,06 091�10 0$11,05 1L 03 0�0120
Test date
• 48-hour LC„=median lethal concentration. An estimation of the potassium chloride concentration
which is lethal to 50%of the test organisms in 48-hours(calculated using ToxCalc).
Central Tendency(mean logarithmic LC50 converted to anti-logarithmic values)
Control Limits (mean logarithmic LC50±2 standard deviations converted to anti-logarithmic values)
Laboratory Warning Limits(mean logarithmic LCso±2 coefficent of variations converted to anti-logarithmic values)
•• • •••• USEPA Warning Limits (mean logarithmic LCso±Ski,converted to anti-logarithmic values,
SA to=10`h percentile of CVs reported nationally by USEPA)
inured
entrydrleMed mnSum..
V"

Environmental Testing Solutions, Inc. Invoice
P. O. Box 7565
Asheville, NC 28802 Date Invoice#
Phone # [phone] 4/23/2020 78518
Bill To
Dare County
Mr.Jordan Curies
600 Mustain Street
Kill Devil Hills,NC 27948
P.O.No. Terms Project
Net 30 Aquatic Toxicity
Quantity Description Rate Amount
3 Mysidopsis bahia Pass/Fail Toxicity Test 200.00 600.00
Thank you for your business.
Total $600.00

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions.Inc. Fax: [phone]
April 24, 2020
Mr.Jordan Curles
Dare County Water Department
600 Mustain Street
Kill Devil Hills, NC 27948
ETS Project Number: 15023
Test Start Date: 04-08-20
Facility Tested: Rodanthe/Waves/Salvo WTP
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Result
Code Test Procedure, Method Number PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test v
EPA-821-R-02-012, Method 2007.0 /�
All toxicity testing results required as part of your permit must be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGE3E.
Additionally, the DMR Reporting Form AT-2 must be signed and e-mailed or mailed to the following
address:
ATForms.ATB(a�ncdenr.gov
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Please call if you have any questions concerning these results.
Sincerely,
(114
Jim umner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

. .. . PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental T tingSolmions,Inc. Fax: [phone]
Effluent Toxicity Report Form - Acute Pass/Fail Date: April 24,2020
Facility: Dare County Water Department NPDES#: NC 0083909 Pipe#: 001 County: Dare
Rodanthe/Waves/Salvo WTP
Laboratory Performing Test: Environmental Testing Solutions, Inc., Certificate#037 Comments:
Signature of Operator in Responsible Charge(ORC):
ORC Phone/E-mail: Project a: 15023
Signature of Laboratory Supervisor: ,, ,,__i Sample#: 200408.18
e-Mail to: AT orms.ATB [e-mail]
Or Mail Original to: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 04-07-20 Organism Tested
Collection Time: 0900
Test Start Date: 04-08-20 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration I Control 7.87 7.92
X pH(S.U.)
47,
Treatment 8.14 8.39
7 x
co c
Alkalinity(mg CaCO3/L) 110 ("
Salinity(Initial/Adjusted)(ppt) 25.0 5.6/25.1 Control 7.8 7.7
D.O.(mg/L)
Total Residual Chlorine(mg/L) <0.10 Treatment 7.9 7.8
Sample Temp.at Receipt(°C) 3.1
Mortality Replicate Mean Mortality
Treatment 1(Control) A B C D
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A B C D
Concentration
90% 60% 70% 70% 70% 67.5%
Tested
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square Root t-Stat/ Rank Sum NA PASS
transformed data. 1-Tailed Critical NA FAIL X
If the absolute value of the calculated t is less than or equal to the absolute value of the tabular t,check PASS.
If the absolute value of the calculated t is greater than the absolute value of the tabular t,check FAIL.
If all vessels within each treatment have the same response but the treatment two response is greater than the control,check fail.
DWR Report Form AT-2

Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0 ,,.a
8. o.&
Client Rodanthe/Waves/Salvo WTP NPDES# NC09909
Facility . Outfall 001
Project# 1,S0-L3 County Dare
Test Concentration(Acute Limit) 90% Dilution mL mL Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed preparation: Sample Dilution water ml
to 25.0±1.0°C In a warm water bath. Artificial sea salt was added to the sample to raise the
salinity to 25.0±1.0 ppt. The sample was then diluted to the test concentration with salt synthetic 990 110 1100
water.
Feeding Test Initiation or Termination Location Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
°" o4,•6i•2o Oq�S ttSS ( %'c ‘t2cw zoo-lo 8"tg. o,l•ob•ZoA
24
"Test organisms were fed in holding 2 to 5 hours prior to test initiation.Test organisms we not fed during the test.
Chemical Analyses: -Analyst identified for each day,performed pH and dissolved oxygen measurements only.Temperature
and salinity performed at the time of test initiation or termination by the analyst performing the
Initial Final toxicity test. Alkalinity and total residual chlorine performed by the analysts identified on the test
Concentration N specific bench sheets and transcribed to this bench sheet.
Analyst f
pH(S.U.)
- .Al f}Ci 2- Chemical analyses:
Dissolved oxygen(mg/L)Control "1•{�Q '41-
Parameter Reporting limit Method number Meter Serial number
Salt SW *Salinity(ppt) 2S0 As 2 pH 0.1 S.U. SM 4500-H+B-2011 Accumet AR20 93312452
*Alkalinity(mg/L CaCO3) L k h Dissolved oxygen 1.0 mg/L SM 4500.0 G-2011 YSI Model 52CE 180104324
*Temperature CC) 15.0 IC.3 Conductivity 14.9 µmhos/cm SM 2510 B-2011 Accumet AR20 93312452
pH(S.U) ,g/9 S•a9 Salinity 1.0 ppt SM 2520 B-2011 YSI PR030 180104324
Dissolved oxygen(mg/L) 7-c l',,JD, Alkalinity 5 0 mg CaCO5/L SM 2320 B-2011 Accumet AR20 93312452
Test �J
Concentration *Salinity(ppt) �. Total residual
Z'„O t S•L� 0.1 mg/L ORION 97-70-1977 Accumet AB250 92349123
L. chlorine*Temperature CC) 1 C L x .
0 Temperature 0.1°C SM 2550B-2010 Digital Thermometer 3Q66 1IS`'s
100% pH(S.U.) 64 15 `, Test Organism Information:
(salinity Dissolved oxygen(mg/L)Adjusted) /-`� Organism Source: Aquatic Indicators,Inc.
*Salinity(ppt) ZS*1 Batch(Al Batch Ab): OA"OS•2.0
pH(S.U.) t- Age(1 to 5 days old): , b A`(CS
100% Dissolved oxygen(mg/L) Date organisms were born: (time
9 SAME AS BATCH DATE ABOVE
*Salinity(ppt) _ organisms were born between was not
6(Ip provided by supplier)
Conductivity(pmhos/cm) q.Zi-0 Average transfer volume: <0.25 mL
*Total residual chlorine(mg/L) 1-C3,10 Transfer bowl information: pH(s.u.)=8•0% Temp.(°cp L . 0
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours Method \iL.SJPk, t(OP
Replicate Replicate
A B C D _ E F G H t-stator Rank OC
0 10 10 10 10 10 10 10 10
1-tailed Critical j (�
Initiation
14
24 I 10 10 (0 !-} PASS or FAIL RA(
Termination
Mean survival: I Ob 7• Mean survival: 32 .S 7.

•
. 351 Depot Street
Asheville,NC 28801
_ , Phone: [phone]
I Fax: [phone]
1
_.' Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Rodanthe/Waves/Salvo WTP NPDES#: NC0083909 Pipe#: 001 County: Dare
Purchase order:
Species: Americamysis(Mysidopsis) bahia Effluent dilution: 90% _
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
Sample information: (to be completed by sample collector) 1
j
Grab sample: 7 Sample location:Tram* 1 cOh(Ef1ira'}e 54m�1�P-tap
j Date: y— "2 0 Time: 09 0 0 Volume collected for testing: 1&a(. / q L:f(c
Number of containers filled for testing: On e.,
1 Method of transport to laboratory:
" Comments:
3
j Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
:'i
i?
sr
Sample custody: (to be completed by sample collector and facility personnel)
Sample collected by: .
N'-i.20
�o� N�95�tf 41 oG o a i
Print Signature Date and time
r: Relinquished by: Received by:
1
t4-"7-2.0 Dyro-�.u7
r; Polo Hoot Ai) ,,,o, Roll,'
Print Si namrc Date and time Print Signature Date and lime ,
Relinquished by: Received by: u
ji 1
V-
5
Print Signature Date and time Print Signature Date and lime
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETSA by: Received at ETS by:
f IIJ#L CA 5D iit>' IA. O t JD)
Print Signature Date and time Print Signature Date and time
Custody seals intact?: F Ell Sample temperature upon receipt at ETS(°C): I/J
Yes Na Not used V 4/ `
Samples received in good condition?T7 -
Y05 Na Total residual chlorine upon receipt at ETS: NM ` _ 1
(DPD Presence/Absense Indicator,MDL=0.10 mg/L) Present Absent
Tracking number: 40a2 3510 e307
Project number: kgJ23 Sample number:2.-00 i oege
Comments:

Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc. Source: Aquatic Indicators, Inc.
1 I I I I 1 I I I I I I I I I I 1 I I I
0.54 — —
Control Limits (± 2 Standard Deviations)
0.52 — —
• • • •
0.50 — —
• • •• • • • •
- • • • • • • • • -
V 0.48 - •
.J - -
0.46 — —
O 1 1 I 1 I I I 1 I 1 I I I I I I I I I I
J 0.65 I I I I I I I I I I I I 1 I I I I I I I
L
0.60 Warning Limits —
00 -
0.55 —
0.50 — • • • . • • • • • • —
•
0.40 — —
1 1 1 1 1 1 1 1 1 1 1 1 1 I 1 I I I I I
0911.10.Ili 006 1 O r 1„Q y 05 3_05 06,01 y.01 16At'01.09'D8.06 91ll'10 051 OS 11.°V 01.01 OyOp 3,03 a01 10
Test date
• 48-hour LC50=median lethal concentration. An estimation of the potassium chloride concentration
which is lethal to 50%of the test organisms in 48-hours(calculated using ToxCalc).
Central Tendency(mean logarithmic LC50 converted to anti-logarithmic values)
,.. — Control Limits (mean logarithmic LC50±2 standard deviations converted to anti-logarithmic values)
—...-_... Laboratory Warning Limits(mean logarithmic LC50±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LC50±SA 10 converted to anti-logarithmic values,
SA.10=10th percentile of CVs reported nationally by USEPA)
iilnterad
and
m Samna

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
July 24, 2020
Mr.Jordan Curles
Dare County Water Department
600 Mustain Street
Kill Devil Hills, NC 27948
ETS Project Number: 15253
Test Start Date: 07-08-20
Facility Tested: Rodanthe/Waves/Salvo WTP
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Result
Test Procedure, Method Number
Code PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test v
EPA-821-R-02-012, Method 2007.0 J�
All toxicity testing results required as part of your permit must be entered on the Effluent Discharge
Monitoring Form (MR-1)for the month in which it was performed, using the parameter code TGE3E.
Additionally, the DMR Reporting Form AT-2 must be signed and e-mailed or mailed to the following
address:
ATForms.ATB(c�ncdenr.gov
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Please call if you have any questions concerning these results.
Sincerely,
C.....) 7
Jim umner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: July 24, 2020
Facility: Dare County Water Department NPDES#: NC 0083909 Pipe#: 001 County: Dare
Rodanthe/Waves/Salvo WTP
Laboratory Performing Test: Environmental Testing Solutions, Inc.,Certificate#037 Comments
Signature of Operator in Responsible Charge(ORC):
ORC Phone/E-mail: Project#: 15253
Signature of Laboratory Supervisor: Sample#: 200708.23
e-Mail to: TForms.ATBPncdenr.gov
Or Mail Original to: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 07-07-20 Organism Tested
Collection Time: 0800
Test Start Date: 07-08-20 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration pH(S.U. Control 7.89 7.81
X ) Treatment 7.93 8.29
Alkalinity(mg CaCO3/L) 120 N w
Salinity(Initial/Adjusted)(ppt) 24.5 5.1/25.4 Control 7.7 7.3
D.O.(mg/L)
Total Residual Chlorine(mg/L) " <0.10 Treatment 7.5 7.2
Sample Temp.at Receipt(°C) 1.1
Mortality Replicate Mean Mortality
Treatment 1(Control) A BCD
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A BCD
Concentration
Tested 90% 80% 80% 80% 90% 82.5%
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square t-Stat/ Rank Sum NA PASS
Root transformed data. 1-Tailed Critical NA FAIL X
If the absolute value of the calculated t is less than or equal to the absolute value of the tabular t,check PASS.
If the absolute value of the calculated t is greater than the absolute value of the tabular t,check FAIL.
If all vessels within each treatment have the same response but the treatment two response is greater than the control,check fail.
DWR Report Form AT-2

I .. . Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia Page 1 of 1
EPA-821-R-02-012, Method 2007.0
Client Rodanthe/Waves/Salvo WTP NPDES# NC0093909
Facility . Outfall 001
Project# 152c 3 County Dare
Test Concentration(Acute Limit) 90% Dilution mL mL Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed preparation: Sample Dilution water ml
to 25.0±1.0°C in a warm water bath.Artificial sea salt was added to the sample to raise the
salinity to 25.0±1.0 ppt. The sample was then diluted to the test concentration with salt synthetic 990 110 1100
water.
Feeding Test Initiation or Termination Location Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
InitiationO/06 * o114 x vsoo (IA 1 Meek as Zc'o'}oe. 23 om-o1-10.5
24
Termination 41,6 tO 13©0
'Test organisms were fed in holding 2 to 5 hours prior to test initiation. Test organisms s+lkre not fed during the test.
Chemical Analyses: -Analyst identified for each day,performed pH and dissolved oxygen measurements only. Temperature
and salinity performed at the time of test initiation or termination by the analyst performing the
Initial Final toxicity test.Alkalinity and total residual chlorine performed by the analysts identified on the test
Concentration Analyst P pI�Per
•n/ specific bench sheets and transcribed to this bench sheet.
pH(S.U.) 1r�4 ',8! Chemical analyses:
Control Dissolved oxygen(mgJL) Parameter Reporting limit Method number Meter Serial number
Salt SW *Salinity 1ppt) 2'{.S AA-1 PH 0.15.U. SM 4500-H+B-2011 Accumet AR20 93312452
*Alkalinity(mg/L CaCO,) %IC) Dissolved oxygen 1.0 mg/L SM 4500-0 G-2011 YSI Model 52CE 18D104324
*Temperature(SC) . •1 1 ,-ek rO Conductivity 14.9 µmhos/cm 5M 2510 8-2011 Accumet AR20 93312452
pH(S.U.) is g 2.9 1 Salinity 1.0 ppt SM 2520 8-2011 PSI PRO30 180104324
Dissolved oxygen(mg/L) g �/j Alkalinity 5.0 mg CaCO,/L SM 2320 8-2011 Accumet AR20 93312452
Test L
Concentration *salinity(ppt) 1
-C r, Total residual
all 1 chlorine 0.1 mg/L ORION 97-70-1977 Accumet A8250 92349123
*Temperature(CC) -Ls.+L -L[7 \ Temperature 0.1°C SM 2550B-2010 Digital Thermometer aobS,,h,i 5
pH(S.U.)
100% 4.9s Test Organism Information:
(salAdjusted, 7'iry Dissolved oxygen(mg/L)
Adjdjuust ^-�•‘"( Organism Source: Aquatic Indicators,Inc.
*Salinity(ppt) 075 u Batch(Al Batch Ab): 01..()5.1-0
pH(S.U.) e ti3 Age(1 to 5 days old): k - i 1 C,
Dissolved oxygen(met.) �1
100% -3-6 Date organisms were born: (time
*Salinit 1 organisms were born between was not SAME AS BATCH DATE ABOVE
Y(ppt)
provided by supplier)
Conductivity(pmhos/cm) o Average transfer volume: <0.25 mL
*Total residual chlorine(mg/L) ,.0.1 O Transfer bowl information: pH(s.u.l="j,g2Temp Co. u .0
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours Method J 1SvA Q
Replicate Replicate SST
A B C D E F G H t-stat or Rank NC
0 10 10 10 10 10 10 10 10 1C
Initiation
1-tailed Critical
24 j v (V / 0Z 2 2_ , PASS or FAIL Fit l__.
Termination
Mean survival: I CO T. Mean survival: rj. S7
Comment codes: d=dead,u=unhealthy,s=stressed
SOP AT41-Revision 5-Exhibit AT41.2

1 •
r_ m. ',,-.7--' k, 351 Depot Street
t :� Asheville,NC 28801
- Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Rodanthe/Waves/Salvo WTP NPDES#: NC0083909 Pipe#: 001 County: Dare
Purchase order:
I
Species: Americamysis(Mysidopsis) bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
I Sample information: (to be completed by sample collector)
Grab sample: Sample location:T(Q1(1tk2.0II1(pv (41e * P
Date: 7/7 /2c Time: 0800 Volume collected for testing: I (34I /I.4(—
Number of containers filled for testing: o n e
Method of transport to laboratory:
Comments: I
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
Sample custody: (to be completed by sample collector and facility personnel)
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE
Sample collected by:
PdO qtdgi'lI 64 0 70/20
0800
Print • Signal c Dom and tint
Relinquished by: Received by:
Rob Nell- Rid ► .7/712.0 o
0430 7,rditn Cvrle5 �'"' 1114i cw.
Print Sig mere Dam and ame Print Signature Date and time
Relinquished by: Received by:
)0(it," C..,r tt 5 9,-v-Z,--- 0 I:4S "'Print Signature Dale and t Print Signature Date and time
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
Fey D ��; Rites o(v
l /
Print Signature Date and time Pnnt Signature Dale and time
Custody seals intact?: 71 - - Sample temperature upon receipt at ETS(°C):
Yet No Not used VI
C.
Samples received in good condition?: 1.11
Yes No Total residual chlorine upon receipt at ETS: r----1 l \ I
{i�t ��J 7�. ,�, (DPD Presence/Absense Indicator,MDL=0.10 mg/L) Present Absent
Tracking number:(, )'`'S/
Project number:Ic253Sample number: 70-11043.13
Comments:

,.., Americamysis (Mysidopsis) Bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc. Source: Aquatic Indicators, Inc.
IIIIIIIIIIIIIIIIIIII
0,54 -
Control Limits (± 2 Standard Deviations)
0.52 - -
• • • •
0.50 -
• • • • • . • •
• • • • • • •
V 0,48 - • • -
Y
J - -
j 0.46 - -
I I I I I I I I I I I I I I I I I l I I
J 0,65 I I I I I I I I I I I I I I I I I I I I
G 0.60 - Warning Limits
00 -
d 0.55 - -
0.50 - • • • •�„�• • . . • -
• • • • ••• . �:
0.45 -
0.40 - -
I I I I I I I I I I I I I I I I I I I I
Ape'0S1"0$"Oti OS n3 of,oa,Oti oS 0�"p6"Oa"��,09 a$,06 p Al 10"0�1 cf ;tiO3"01.01 o206 o3,03�a 01�50,�641��"01�0
Test date
• 48-hour LC50=median lethal concentration. An estimation of the potassium chloride concentration
which is lethal to 50%of the test organisms in 48-hours(calculated using ToxCalc).
Central Tendency(mean logarithmic LC50 converted to anti-logarithmic values)
Control Limits (mean logarithmic LCS0±2 standard deviations converted to anti-logarithmic values)
Laboratory Warning Limits(mean logarithmic LCS0±2 coefficent of variations converted to anti-logarithmic values)
• •• USEPA Warning Limits (mean logarithmic LC50±SA to converted to anti-logarithmic values,
SA 10= 10th percentile of CVs reported nationally by USEPA)
Meted and
by
Sumner
,gym:�mn.c

Environmental Testing Solutions, Inc. Invoice
P. O. Box 7565
Asheville, NC 28802 Date Invoice#
Phone # [phone]
10/23/2020 81423
Bill To
Dare County
Mr.Jordan Curies
600 Mustain Street
Kill Devil 1-lills,NC 27948
P.O.No. Terms Project
Net 30 Aquatic Toxicity
Quantity Description Rate Amount
3 Mysidopsis bahia Pass/Fail Toxicity Test 200.00 600.00
RWS
Skyco
Stumpy Point
Thank you for your business.
Total $600.00

PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
October 23, 2020
Mr.Jordan Curies
Dare County Water Department
600 Mustain Street
Kill Devil Hills, NC 27948
ETS Project Number: 15461
Test Start Date: 10-07-20
Facility Tested: Rodanthe/Waves/Sa Ivo WTP
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Result
Test Procedure, Method Number
Code PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test "
EPA-821-R-02-012, Method 2007.0 J� •
All toxicity testing results required as part of your permit must be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGE3E.
Additionally,the DMR Reporting Form AT-2 must be signed and e-mailed or mailed to the following
address:
ATForms.ATB(a�ncdenr.gov
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
Please call if you have any questions concerning these results.
Sincerely,
Ji Sumner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

6 , :, PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: October 23, 2020
Facility: Dare County Water Department NPDES#: NC 0083909 Pipe#: 001 County: Dare
Rodanthe/Waves/Salvo WTP
Laboratory Performing Test: Environmental Testing Solutions, Inc., Certificate#037 Comments
Signature of Operator in Responsible Charge(ORC): .
ORC Phone/E-mail: Project#: 15461
Signature of Laboratory Supervisor: � 4140
„�.�-� Sample#: 201007.19
e-Mail to: [e-mail]
Or Mail Original to: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 10-06-20 Organism Tested
Collection Time: 0900
Test Start Date: 10-07-20 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration pH(S.U. Control 7.87 7.90
X o _ ) Treatment 7.94 8.38
z x
c
Alkalinity(mg CaCO3/L) 95 c'n W
Salinity(Initial/Adjusted)(ppt) 24.7 5.7/25.1 Control 8.0 7.8
D.O. (mg/L)
Total Residual Chlorine(mg/L) • <0.10 Treatment 7.9 7.9
Sample Temp.at Receipt(°C) 2.2
Mortality Replicate Mean Mortality
Treatment 1(Control) A B C D
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A B C D
Concentration
90% 0% 0% 0% 0% 0.0%
Tested
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square t-Stat/ Rank Sum NA PASS X
Root transformed data. 1-Tailed Critical NA FAIL
If the absolute value of the calculated t is less than or equal to the absolute value of the tabular t,check PASS.
If the absolute value of the calculated t is greater than the absolute value of the tabular t,check FAIL.
If all vessels within each treatment have the same response but the treatment two response is greater than the control,check fail.
DWR Report Form AT-2

Page lof1
Acute Pass/Fail Whole Effluent Toxicity Test, Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0 ,Oft
r
s,1
Client Rodanthe/Waves/Salvo WTP NPDES# i 698939@9/4 NC 00.6 CP►
Facility Outfall 001
Project# vs..lb\ County Dare
Test Concentration (Acute Limit) 90% Dilution mL mL Total volume
Sample was not aerated or treated unless otherwise noted on this form. The sample was warmed to preparation: Sample Dilution water ml
25.0±1.0°C in a warm water bath. Artificial sea salt was added to the sample to raise the salinity to
25.0±1.0 ppt. The sample was then diluted to the test concentration with salt synthetic water. 990 110 1100
Feeding Test Initiation or Termination Location Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
U6A"r
.,,° N0 61 10 0R`� 1 S IA 12't-O GftperJ -.O 10�l, 19 oR•26-to P6
24 10.0.-p 11,�
Temmatmn
"Test organisms were fed in holding 2 to 5 hours prior to test initiation.Test organisms were n t fed during the test.
Chemical Analyses: •Analyst identified for each day,performed pH and dissolved oxygen measurements only. Temperature
and salinity performed at the time of test initiation or termination by the analyst performing the toxicity
Initial Final test. Alkalinity and total residual chlorine performed by the analysts identified on the test specific bench
Concentration Analyst A,/r sheets and transcribed to this bench sheet.
pH(S.U.) I "f: /a•o .a.�
.4- 7 7.90 Chemical analyses:
Dissolved oxygen(mg/L)Control O Q O p 7 p' Parameter Reporting limit Method number Meter Serial number
Salt SW *Salinity(ppt) 14.1 G/S.q pH 0.1 S.U. SM 4500-Ho B-2011 Accumet AR20 93312452
*Alkalinity(mg/L CaCO3) Ckc Dissolved oxygen 1.0 mg/L SM 4500-0 G-2011 Y51 Model 52CE 18D104324
*Temperature(°C) 1S•0 ZS.1_. Conductivity 14.9 pmhos/cm SM 2510 B-2011 Accumet AR20 93312452
pH(S.U.) 15r0.61f.10
`1-p LI 8' .1.0"�1 �.3 Salinity 1.0 ppt SM 2520 B-2011 YSI PR030 180104324
Dissolved oxygen(mg/L) 7 eyi Alkalinity 5.0 mg CaCO3/L SM 2320 B-2011 Accumet AR20 93312452
Test
Concentration *Salinity(ppt) dq• 25.2_ Total residual 0.1 mg/L ORION 97-70-1977 Accumet A6250 92349123
chlorine
*Temperature(°C) -S.© 1.5•1— Temperature 0.1°C SM 2550B-2010 Digital Thermometer I3t '4b�
100% pH(S.U.) 9sr- Test Organism Information:
(salinity Dissolved oxygen(mg/L)
Adjusted) -3-
Organism Source: Aquatic Indicators,Inc.
*Salinity(ppt) a5:I Batch(Al Batch Ab): 10-CA"1.0
pH(S.U.) Age(1 to 5 days old):
64-y1 3-tAa5
Dissolved oxygen(mg/L) Date organisms were born: (time
100% SAME AS BATCH DATE ABOVE
*Salinity(ppt) organisms were born between was not
5.7
provided by supplier)
Conductivity(µmhos/cm) R`IZ O Average transfer volume: <0.25 mL
*Total residual chlorine(mg/L) 4,..a.10 Transfer bowl information: pH(S.U.)= ,.. Temp.(°C)= 11.1
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours Replicate Replicate Method USUAL IUSP
A B C D E F G H t-stat or Rank hJ C
0 10 10 10 10 10 10 10 10 1-tailed Critical tJC
Initiation
24 ICJ /o 1 0 10 l p /0 l 0 /Q PASS or FAIL pro S.5
Termination
Mean survival: loo/ Mean survival: 106 7
Comment codes: d=dead,u=unhealthy,s=stressed

35l Depot Street
Asheville,NC 28801
Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain—of—Custody Form
facility: Rodanthe/Waves/Salvo WTP NPDES it: NC0083909 Pipe#: 001 County: Dare
Purchase order
species: Americamysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
Sample information: (to be completed by sample collector)
Grab sample: Sample location: (a r)r�-)t rs�}e f, Tim in#-
Date: IQ /6 /.0 Time: O 9 00 Volume collected for testing: '(y I/t(L l re....
Number of containers filled for testing: 0 n e.
Method of transport to laboratory:
Comments:
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
Sample custody: (to be completed by sample collector and facility personnel)
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE
Sample collected by:
Ob 11"99pi" W 0/s/0o
Print Signature Date and um:
Relinquished by: Received by:
iVdk N°yyP1fi IgMtirteVi
Ipcl3 kL
0 q 3 5—
Prim Signature Dale and time Print Signature Date and tune
Relinquished by: Received by:
Print Signature i Date an tune l'nnt Signature Date and lime
;ample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
14
Print Signature Date and tine !hint Signature Date and time
Custody seals intact?: r Sample temperature upon receipt at ETS(°C):
Yes No Na US.] 2Y2`lam
Samples received in good condition?:n -
Yes No Total residual chlorine upon receipt at ETS: I--1 r -1/
(DPD Presence/Absense Indicator,MDL=0.10 mg/L) Present AbsCnt
Tracking number: L(Q a s 35 t012.4
Project number: tali,I Sample number: 7.43 10 6.,11
Comments:

Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc. Source: Aquatic Indicators, Inc.
•
I I I 1 I I I I I I I I I I I I I I I I
0.54 — —
Control Limits (± 2 Standard Deviations)
0.52 — -
• • • •
0.50 — —
• • • • • •
• • • • • • •
V 0.48 — • • • —
Y
avlo 0.46 — —
o II I II I I I III I I I I II III
J 0.65 I I I I I I I I I I I I I I I I I I I
L
0 0.60 — Warning Limits
00 _
0.55 — —
0.50 — • • • i •_•._.• • • -a • • •
• • a• —
0.40 — —
0y.19 01. 01 19 0a,19 09.19 0619 11 08.19 0519 03.19 01 10 et" 0,y.L0 0�.-so LO 01. 0�1 0
1110 1y 10 0610
03' 0A" OS 03 01" 0a" 0' 10" 11 1ti' 01' 0ti 03' 05' 05- 06' 01' 06' 09" 1,0-
Test date
• 48-hour LC50=median lethal concentration. An estimation of the potassium chloride concentration
which is lethal to 50%of the test organisms in 48-hours(calculated using ToxCalc).
Central Tendency(mean logarithmic LC50 converted to anti-logarithmic values)
Control Limits (mean logarithmic LC50±2 standard deviations converted to anti-logarithmic values)
---••- • Laboratory Warning Limits(mean logarithmic LC50±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LC50±Ski,converted to anti-logarithmic values,
SA 10= 10th percentile of CVs reported nationally by USEPA)
rIlm
�ere0 ana
bM�Sumner

Appendix 3.0 — Antiscalant Data
•
•
•
•
•
••
TIMMONS GROUP

5/6/22, 2 23 PM
avi sta-advi sorci.on l i ne
Projection Information DARE COUNTY-RODANTHE May-06-2022
RECOVERY 75.00% WATER TYPE Well Water(Deaerated)
CUSTOMER Chuck Budd MEMBRANE MANUFACTURER Default
ENGINEER Jason MEMBRANE MODEL High Rej Seawater
PREPARED BY Jason WATER ANALYSIS DATE May-06-2022
Antiscalant
DOSING DATA RECOMMENDED PRODUCT
PRIMARY PRIMARY
DOSAGE 2.00 mg/L Vitae r'5100
PUMP RATE 4.06 ml/min
DAILY REQUIREMENT 13.76 lb/day
SATURATION GRAPH
Saturation Index
CCPP i--
CaSO4
BaSO4
SrSO4
Ca3(PO4)2
CaF2
SiO2
Mg(OH)2
Fe
Mn
Al
0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Percentage of Product Limit(100%max)
PRODUCT USAGE PROJECTION
PRODUCT DOSAGE
VITEC^"5100
Daily 13.8 lb Weekly 96.3 lb Monthly 385.3 lb Yearly 5009.5 lb
NOTES
about:srcdoc Page 1 of 3

5/6/22, 2:23 PM
The information contained herein reflects our current level of technical knowledge and experience. It does not constitute a legal warranty of particular characteristics or of
fitness for a specific purpose and, due to the abundance of possible influences, does not exempt the user from making its own examinations and taking appropriate
precautionary measures.It shall be the responsibility of the recipient of our products to respect any intellectual property rights and comply with any laws or other provisions.
Copyright L 2021 Kurita Water Industries. Advisor CI Version 7.2,Calculation Engine Version 210301
Avista I Advisor'Ci
ONLINE
Projection Information DARE COUNTY-RODANTHE May-06-2022
RECOVERY 75.00% WATER TYPE Well Water(Deaerated)
CUSTOMER Chuck Budd MEMBRANE MANUFACTURER Default
ENGINEER Jason MEMBRANE MODEL High Rej Seawater
PREPARED BY Jason WATER ANALYSIS DATE May-06-2022
Antiscalant
SYSTEM DESIGN
OVERALL FLOW TDS(mg/L) ECOND pH
3 0 ©4 `-->0 SYSTEM 75.00% (USGPM) (ps/cm)
RECOVERY 0 573.33 1881 2139.89 7.00
0 0 573.33 1881 2139.89 7.00
0 143.33 6999 7542.56 7.67
0 430.00
WATER CHEMISTRY SCALING POTENTIAL
ENTERED ADJUSTED CONC. ENTERED ADJUSTED CONC.
CATIONS(mg/L) FEED FEED STAGE 1 SATURATION LEVEL FEED FEED STAGE 1
Sodium 502.20 502.20 1988.71 CCPP -67.71 -67.71 120.00
Potassium 20.40 20.40 81.52 Calcium Sulfate CaSO4 0.00 0.00 0.00
Calcium 15.80 15.80 63.19 Barium Sulfate BaSO4 0.03 0.03 0.18
Magnesium 18.90 18.90 75.52 Strontium Sulfate SrSO4 0.00 0.00 0.00
Iron 0.05 0.05 0.20 Calcium Phosphate Ca3(PO4)2 0.00 0.00 0.00
Manganese 0.000 0.000 0.000 Calcium Flouride CaF2 0.01 0.01 0.17
Barium 0.020 0.020 0.080 Silica SiO2 0.29 0.29 1.14
Strontium 0.250 0.250 0.995 Magnesium Hydroxide Mg(OH)2 0.00 0.00 0.00
Aluminum 0.00 0.00 0.00
Ammonium 2.58 2.58 10.03
SATURATION INDICES ENTERED ADJUSTED CONC.
FEED FEED STAGE I
ANIONS(mg/L) ENTERED ADJUSTED CONC.
FEED FEED STAGE 1 Langelier Saturation Index(LSI) -0.755 -0.755 0.927
---- Stiff&Davis Index(S&DI) -0.981 -0.981 0.774
Chloride 506.59 506.59 2010.15
Sulfate 5.20 5.20 20.70 ENTERED ADJUSTED CONC.
Bicarbonate 626.03 626.03 2421.91 SYSTEM PARAMETERS FEED FEED STAGE 1
Carbonate 0.72 0.72 20.04 s
Nitrate 0.00 0.00 0.00 pH 7.00 7.00 7.67
Fluoride 3.47 3.47 13.81 Ionic Strength(M) 0.025 0.025 0.098
Phosphate 0.21 0.21 0.84 Temperature(°C) 20.0 20.0 20.0
Silica 29.50 29.50 116.23 TDS(mg/L) 1880.846 1880.846 6998.947
about:srcdoc Page 2 of 3

5/6/22, 2:23 PM
ANTISCALANT DETAILS
PRIMARY
Antiscalant Selected Vitec TM 5100
Dosage 2.00 mg/I
Usage 13.76 lb/day
Tank Concentration 100
Pump Rate 4.06 mUmin
Copyright©2021 Kurita Water Industries. Advisor CI Version 7.2,Calculation Engine Version 210301
about:srcdoc Page 3 of 3