NC0085553_Renewal (Application)_20221201 (4)

ROY COOPER0.
Governor a C
ELIZABETH S.BISER „`• 4N,:n
Secretary y`s`• Q"�'o '
RICHARD E.ROGERS,JR. NORTH CAROLINA
- Director Environmental Quality
December 01, 2022
Village of Bald Head Island
Attn: Chris McCall, Manager
PO Box 3009
Bald Head Island, NC 28461-3009
Subject: Permit Renewal
Application No. NC0085553
Bald Head Island WTP
Brunswick County
Dear Applicant:
The Water Quality Permitting Section acknowledges the November 30, 2022 receipt of your permit renewal application
and supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW
permitting branch. Per G.S. 150B-3 your current permit does not expire until permit decision on the application is made.
Continuation of the current permit is contingent on timely and sufficient application for renewal of the current permit.The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
Sincerely,
acuk
Wren The. ord
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
E - NorthWilmington CarolinRegioa DepartmentnalOffice o1 f127 EnvironmentalCardinalDrive Quality IExtension DivisionIWilmington,Nor of Water Resources
Carolina 28405
er,.�emu n� 910.796.7215

�v McKIM&CREED ENGINEERS
SURVEYORS
PLANNERS
November 28, 2022 00784-0090 (40)
North Carolina Department of Environmental Quality
Division of Water Resources
Water Quality Permitting Section—NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: NPDES Permit: NC0085553
Bald Head Island WTP
Class PCNC
Brunswick County
To whom it may concern:
On behalf of The Village of Bald Head Island, we are pleased to submit
this NPDES permit renewal package for NCDEQ review and approval.
Find enclosed the requisite documentation as follows:
✓ Three (3) hard copies of NPDES Form 1 —Including Attachments:
o Attachment 1 —Topographic Map
✓ Three (3) hard copies of NPDES Form 2C—Including Attachments:
o Attachment 2—Outfall Location Map
o Attachment 3 —Flow Schematic Line Drawing
o Attachment 4—DMR Data (Oct 2021 —Sept 2022)
o Attachment 5—Effluent & Intake Characteristics:
• Table A
• Table B
243 North Front Street • Table C
• Analytical Results (DMR Data Oct 2021 —Sept 2022)
Wilmington, NC 28401
o Attachment 6—WET Testing Results
o Attachment 7—Additional Information:
910.343.1048
Fax [phone] I:\00784\0090\ENG\40-Permit\NPDES Permit Renewal Assistance
www.mckimcreed.com

•
vMcKIM&CREED ."4GINEERS
•JRVEYORS
PLANNERS
o Discharge Alternatives Evaluation for WET Test Failures
■ Please note that this evaluation concludes:
"After reviewing the model results, sensitivity
analyses, and stream sampling, the Division
concurs with your assessment with using an
average 10:1 dilution for human health and
aquatic life chronic criteria. A dilution of 6.5:1 for
acute criteria is also acceptable. These dilution
ratios only apply to the parameters that were
sampled for (arsenic, copper, and zinc) and WET
testing."
Please let me know if you require additional information or have any
questions. Thank you for your assistance.
Sincerely,
McKIM&CREED, INC.
Tony Boahn, PE
Vice-President
243 North Front Street
Wilmington, NC 28401
910.343.1048
Fax [phone] I:\00784\0090\ENG\40-Permit\NPDES Permit Renewal Assistance
www.mckimcreed.com

United States Office of Water EPA Form 3510-1
Environmental Protection Agency Washington, D.C. Revised March 2019
Water Permits Division
&EPA Application Form 1
General Information
NPDES Permitting Program
Note: All applicants to the National Pollutant Discharge Elimination System (NPDES) permits
program, with the exception of publicly owned treatment works and other treatment works treating
domestic sewage, must complete Form 1. Additionally, all applicants must complete one or more of the
following forms: 2B, 2C, 2D, 2E, or 2F. To determine the specific forms you must complete, consult the
"General Instructions" for this form.

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
Form U.S.Environmental Protection Agency
1 8 EPA Application for NPDES Permit to Discharge Wastewater
NPDES GENERAL INFORMATION
SECTION 1.ACTIVITIES REQUIRING AN NPDES PERMIT(40 CFR 122.21(f)and(f)(1))
1.1 Applicants Not Required to Submit Form 1
Is the facility a new or existing publicly owned Is the facility a new or existing treatment works
1.1.1 1
treatment works? 1. .2 treating domestic sewage?
If yes, STOP. Do NOT complete ❑✓ No If yes,STOP. Do NOT ✓❑ No
Form 1. Complete Form 2A. complete Form 1. Complete
Form 2S.
1.2 Applicants Required to Submit Form 1
1.2.1 Is the facility a concentrated animal feeding 1.2.2 Is the facility an existing manufacturing,
operation or a concentrated aquatic animal commercial, mining,or silvicultural facility that is
a production facility? currently discharging process wastewater?
oYes 4 Complete Form 1 0 No ❑ Yes 4 Complete Form No
a and Form 2B. 1 and Form 2C.
1.2.3 Is the facility a new manufacturing,commercial, 1.2.4 Is the facility a new or existing manufacturing,
co
mining,or silvicultural facility that has not yet commercial,mining,or silvicultural facility that
commenced to discharge? discharges only nonprocess wastewater?
dEl Yes 4 Complete Form 1 0 No Yes 4 Complete Form 0 No
ec and Form 2D. 1 and Form 2E.
1.2.5 Is the facility a new or existing facility whose
' discharge is composed entirely of stormwater
a associated with industrial activity or whose
discharge is composed of both stormwater and
non-stormwater?
Yes 4 Complete Form 1 ❑✓ No
and Form 2F
unless exempted by
40 CFR
122.26(b)(14)(x)or
b 15 .
SECTION 2.NAME,MAILING ADDRESS,AND LOCATION(40 CFR 122.21(f)(2))
2.1 Facility Name
Bald Head Island WTP
2.2 EPA Identification Number
U
0 110012850192
-a
2.3 Facility Contact
Name(first and last) Title Phone number
45 Chris McCall Village Manager [phone]
= Email address
[e-mail]
2.4 Facility Mailing Address
zStreet or P.O.box
PO Box 3009
City or town State ZIP code
Bald Head Island NC 28461
EPA Form 3510-1(revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
d 2.5 Facility Location
.a Street, route number,or other specific identifier
Q U 256 Edward Teach Extension
rn
c 0 County name County code(if known)
3 Brunswick
co
City or town State ZIP code
z R Bald Head Island NC 28461
.ECTION 3.SIC AND NAICS CODES(40 CFR 122.21(f)(3))
3.1 SIC Code(s) Description(optional)
4952 Water Supply
y
w
O
U
U)
U
3.2 NAICS Code(s) Description(optional)
221320 Water,Sewage,and Other
c
.ECTION 4.OPERATOR INFORMATION(40 CFR 122.21(f)(4))
4.1 Name of Operator
Village of Bald Head Island
O 4.2 Is the name you listed in Item 4.1 also the owner?
w
✓❑ Yes ❑ No
L 4.3 Operator Status
0
15 0 Public—federal ❑ Public—state ✓❑ Other public(specify)Town
o ❑ Private ❑ Other(specify)_
4.4 Phone Number of Operator
[phone]
4 5 Operator Address
Street or P.O. Box
E: PO Box 3009
o 2
City or town State ZIP code
o v Bald Head Island NC 28461
cc
C. Email address of operator
0 [e-mail]
SECTION 5. INDIAN LAND(40 CFR 122.21(f)(5))
w c2 5.1 Is the facility located on Indian Land?
c J ❑Yes ❑✓ No
EPA Form 3510-1(revised 3-19) Page 2

r
EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
•ECTION 6. EXISTING ENVIRONMENTAL PERMITS(40 CFR 122.21(f)(6))
6.1 Existing Environmental Permits(check all that apply and print or type the corresponding permit number for each)
❑ NPDES(discharges to surface ❑ RCRA(hazardous wastes) ❑ UIC(underground injection of
water) fluids)
o '= NC0085553 n/a n/a
> E
w a ❑ PSD(air emissions) ❑ Nonattainment program(CM) ❑ NESHAPs(CM)
n/a n/a n/a
X ❑ Ocean dumping(MPRSA) ❑ Dredge or fill(CWA Section 404) ❑ Other(specify)
w n/a n/a n/a
.ECTION 7.MAP(40 CFR 122.21(f)(7))
7.1 Have you attached a topographic map containing all required information to this application?(See instructions for
C specific requirements.)
❑✓ Yes ❑ No ❑ CAFO—Not Applicable(See requirements in Form 2B.)
•ECTION 8.NATURE OF BUSINESS(40 CFR 122.21(f)(8))
8.1 Describe the nature of your business.
Continue to operate a Water Treatment Plant with a discharge of Reverse Osmosis(RO)wastewater concentrate.
This water treatment plant currently has a design potable flowrate of 0.288 MGD and a maximum,monthly average
wastewater discharge of 0.0706 MGD.This facility is located at Village of Bald Head Island WTP,256 Edward Teach
Extension,Bald Head Island in Brunswick County.Wastewater treatment consists of:
co
0 1)Anti-scalant injection system
2)Two(2)0.101 MGD capacity primary RO systems with reject water flow totalizer
3)One(1)0.086 MGD capacity polishing RO system with reject waster flow totalizer
,g
Dischargeis from said treatment works at the location specified on the attached map into Bald Head Island Marina
011101►E:1 sialIRif'/`lg12111d:1 ifiN*14DIN :iFMMOV
9.1 Does your facility use cooling water?
❑ Yes ❑✓ No 4 SKIP to Item 10.1.
- 9.2 Identify the source of cooling water. (Note that facilities that use a cooling water intake structure as described at
cm 40 CFR 125, Subparts I and J may have additional application requirements at 40 CFR 122.21(r). Consult with your
Y
a Y NPDES permitting authority to determine what specific information needs to be submitted and when.)
o m
U -•
SECTION 10.VARIANCE REQUESTS(40 CFR 122.21(f)(10))
10.1 Do you intend to request or renew one or more of the variances authorized at 40 CFR 122.21(m)?(Check all that
apply. Consult with your NPDES permitting authority to determine what information needs to be submitted and
when.)
d ❑ Fundamentally different factors(CWA ❑ Water quality related effluent limitations(CWA Section
e Section 301(n)) 302(b)(2))
CO ❑ Non-conventional pollutants(CWA ❑ Thermal discharges(CWA Section 316(a))
Section 301(c)and(g))
❑✓ Not applicable
EPA Form 3510-1(revised 3-19) Page 3

EPA Identification Number NPOES Permit Number Facility Name Form Approved 03/05;19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
SECTION 11.CHECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a)and(d))
11.1 In Column 1 below,mark the sections of Form 1 that you have completed and are submitting with your application.
For each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority.Note
that not all applicants are required to provide attachments.
Column 1 Column 2
Li Section 1:Activities Requiring an NPDES Permit ❑ wl attachments
Section 2:Name,Mailing Address,and Location ❑ wl attachments
0 Section 3:SIC Codes ❑ w/attachments
0 Section 4:Operator Information ❑ w/attachments
1:1 Section 5: Indian Land ❑ w/attachments
Section 6: Existing Environmental Permits ❑ wl attachments
Section 7:Map 0 wl topographic
map ❑ w/additional attachments
co
0 Section 8:Nature of Business ❑ wl attachments
❑Q Section 9:Cooling Water Intake Structures ❑ w/attachments
El Section 10:Variance Requests ❑ w/attachments
0 Section 11:Checklist and Certification Statement ❑ wI attachments
11.2 Certification Statement
ca
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.t am aware that there are significant penalties for submitting false information,
including the possibility of fine and imprisonment for knowing violations
Name(print or type first and last name) Official title
Chris McCall Village Manager
Signature Date signed
(l/28/2022
EPA Form 3510-1(revised 3-19) Dag?4

Attachment 1
Topographic Map

_ CAPE FEAR QUADRANGLE
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United States Office of Water EPA Form 3510-2C
Environmental Protection Agency Washington, D.C. Revised March 2019
Water Permits Division
EPA Application Form 2C
Existing Manufacturing ,
Commercial , Mining , and
Si Ivicu Itu ral Operations
NPDES Permitting Program
Note: Complete this form and Form 1 if your facility is an existing manufacturing, commercial, mining,
or silvicultural facility that currently discharges process wastewater.

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
Form U.S.Environmental Protection Agency
2C " EPA Application for NPDES Permit to Discharge Wastewater
NPDES EXISTING MANUFACTURING,COMMERCIAL, MINING,AND SILVICULTURE OPERATIONS
SECTION 1.OUTFALL LOCATION(40 CFR 122.21(g)(1))
1.1 Provide information on each of the facility's outfalls in the table below.
o Numbelr Receiving Water Name Latitude Longitude
J
001 Bald Head Island Marina Eidi 33° 52' 37.1" N 78° 0' 3.8" W
tC
0
SECTION 2. LINE DRAWING (40 CFR 122.21(g)(2))
a, 2.1 Have you attached a line drawing to this application that shows the water flow through your facility with a water
c -3 balance?(See instructions for drawing requirements. See Exhibit 2C-1 at end of instructions for example.)
J `
❑✓ Yes ❑ No
SECTION 3.AVERAGE FLOWS AND TREATMENT(40 CFR 122.21(g)(3))
3.1 For each outfall identified under Item 1.1, provide average flow and treatment information.Add additional sheets if
necessary.
**Outfall Number** o01
Operations Contributing to Flow
Operation Average Flow
Reverse Osmosis(RO)wastewater concentrate 0.05 mgd
mgd
mgd
mgd
Treatment Units
Description Code from Final Disposal of Solid or
(include size,flow rate through each treatment unit, Table 2C-1 Liquid Wastes Other Than
retention time,etc.) by Discharge
n/a n/a n/a
EPA Form 3510-2C(Revised 3-19) Page 1

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
3.1 **Outfall Number**
cont. Operations Contributing to Flow
Operation Average Flow
mgd
mgd
mgd
mgd
Treatment Units
Description Code from Final Disposal of Solid or
(include size,flow rate through each treatment unit, Table 2C-1 Liquid Wastes Other Than
retention time,etc.) by Discharge
o _
U
c
m
E — -
iv
-0 **Dutfall Number**
Operations Contributing to Flow
o Operation Average Flow
o, mgd
0)
mgd
mgd
mgd
Description Code from Final Disposal of Solid or
(include size,flow rate through each treatment unit, Table 2C-1 Liquid Wastes Other Than
retention time,etc.) by Discharge
3.2 Are you applying for an NPDES permit to operate a privately owned treatment works?
El Yes ❑✓ No SKIP to Section 4.
3.3 Have you attached a list that identifies each user of the treatment works?
❑ Yes ❑ No
EPA Form 3510-2C(Revised 3-19) Page 2

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
SECTION 4. INTERMITTENT FLOWS(40 CFR 122.21(g)(4))
4.1 Except for storm runoff, leaks,or spills, are any discharges described in Sections 1 and 3 intermittent or seasonal?
❑ Yes ✓❑ No 4 SKIP to Section 5.
4.2 Provide information on intermittent or seasonal flows for each applicable outfall.Attach additional pages, if necessary.
Outfall Operation Frecuency Flow Rate
Number (list) Average Average Long-Term Maximum Duration
DayslWeek MonthsNYear Average Daily
dayslweek months/year mgd mgd days
days/week months/year mgd mgd days
LL
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year mgd mgd days
days/week months/year rngd mgd days
SECTION 5. PRODUCTION (40 CFR 122.21(g)(5))
5.1 Do any effluent limitation guidelines(ELGs) promulgated by EPA under Section 304 of the CWA apply to your facility?
❑ Yes ❑✓ No 4 SKIP to Section 6.
5.2 Provide the following information on applicable ELGs.
ELG Category ELG Subcategory Regulatory Citation
U
•Q
5.3 Are any of the applicable ELGs expressed in terms of production(or other measure of operation)?
❑ Yes ❑ No 4 SKIP to Section 6.
0
5.4 Provide an actual measure of daily production expressed in terms and units of applicable ELGs.
Outfall Unit of
Operation,Product,or Material Quantity per Day
Number Measure
co
0
c;
v
0
L
EPA Form 3510-2C(Revised 3-19) Page 3

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
SECTION 6. IMPROVEMENTS(40 CFR 122.21(g)(6))
6.1 Are you presently required by any federal, state,or local authority to meet an implementation schedule for constructing,
upgrading,or operating wastewater treatment equipment or practices or any other environmental programs that could
affect the discharges described in this application?
O Yes ❑✓ No 4 SKIP to Item 6.3.
6.2 Briefly identify each applicable project in the table below.
Affected Final Compliance Dates
Brief Identification and Description of Outfalls Source(s)of
co
o Project (list outfall Discharge Required Projected
a. number)
(5
to -
a)
td
0)
6.3 Have you attached sheets describing any additional water pollution control programs(or other environmental projects
that may affect your discharges)that you now have underway or planned?(optional item)
❑ Yes ❑✓ No ❑ Not applicable
SECTION 7.EFFLUENT AND INTAKE CHARACTERISTICS(40 CFR 122.21(g)(7))
See the instructions to determine the pollutants and parameters you are required to monitor and, in turn,the tables you must
complete. Not all applicants need to complete each table.
Table A.Conventional and Non-Conventional Pollutants
7.1 Are you requesting a waiver from your NPDES permitting authority for one or more of the Table A pollutants for any of
your outfalls?
❑ Yes ❑✓ No - SKIP to Item 7.3.
7.2 If yes, indicate the applicable outfalls below.Attach waiver request and other required information to the application.
Outfall Number _ Outfall Number Outfall Number
7.3 Have you completed monitoring for all Table A pollutants at each of your outfalls for which a waiver has not been
requested and attached the results to this application package?
ID Yes 1-1 No;a waiver has been requested from my NPDES
permitting authority for all pollutants at all outfalls.
Table B.Toxic Metals,Cyanide,Total Phenols,and Organic Toxic Pollutants
GI
7.4 Do any of the facility's processes that contribute wastewater fall into one or more of the primary industry categories
CIZS
listed in Exhibit 2C-3?(See end of instructions for exhibit.)
m ElYes ElNo 4 SKIP to Item 7.8.
7.5 Have you checked"Testing Required"for all toxic metals,cyanide,and total phenols in Section 1 of Table B?
❑ Yes ❑ No
7.6 List the applicable primary industry categories and check the boxes indicating the required GC/MS fraction(s)identified
in Exhibit 2C-3.
Primary Industry Category Required GCIMS Fraction(s)
(Check applicable boxes.)
❑Volatile 0 Acid 0 Base/Neutral 0 Pesticide
❑Volatile 0 Acid 0 Base/Neutral ❑Pesticide
❑Volatile 0 Acid 0 Base/Neutral 0 Pesticide
EPA Form 3510-2C(Revised 3-19) Page 4

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05119
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
7.7 Have you checked"Testing Required"for all required pollutants in Sections 2 through 5 of Table B for each of the
GC/MS fractions checked in Item 7.6?
❑ Yes ❑ No
7.8 Have you checked"Believed Present"or"Believed Absent"for all pollutants listed in Sections 1 through 5 of Table B
where testing is not required?
D Yes ❑ No
7.9 Have you provided(1)quantitative data for those Section 1,Table B, pollutants for which you have indicated testing is
required or(2)quantitative data or other required information for those Section 1,Table B,pollutants that you have
indicated are"Believed Present"in your discharge?
❑ Yes ❑ No
7.10 Does the applicant qualifyfor a small business exemption under the criteria specified in the instructions?
PP P P
❑ Yes 4 Note that you qualify at the top of Table B, ❑ No
- then SKIP to Item 7.12.
7.11 Have you provided(1)quantitative data for those Sections 2 through 5,Table B,pollutants for which you have
o determined testing is required or(2)quantitative data or an explanation for those Sections 2 through 5,Table B,
pollutants you have indicated are"Believed Present"in your discharge?
N ✓❑ Yes ElNo
}; Table C.Certain Conventional and Non-Conventional Pollutants
7.12 Have you indicated whether pollutants are"Believed Present"or`Believed Absent"for all pollutants listed on Table C
for all outfalls?
❑✓ Yes ❑ No
7.13 Have you completed Table C by providing(1)quantitative data for those pollutants that are limited either directly or
- indirectly in an ELG and/or(2)quantitative data or an explanation for those pollutants for which you have indicated
"Believed Present"?
❑✓ Yes ❑ No
W Table D.Certain Hazardous Substances and Asbestos
7.14 Have you indicated whether pollutants are"Believed Present"or"Believed Absent"for all pollutants listed in Table D for
all outfalls?
❑ Yes ❑ No
7.15 Have you completed Table D by(1)describing the reasons the applicable pollutants are expected to be discharged
and(2)by providing quantitative data, if available?
❑ Yes ❑✓ No
Table E.2 3 7 8-Tetrachlorodibenzo- -Dioxin(2,3,7,8-TCDD)
7.16 Does the facility use or manufacture one or more of the 2,3,7,8-TCDD congeners listed in the instructions,or do you
know or have reason to believe that TCDD is or may be present in the effluent?
❑ Yes 4 Complete Table E. ❑✓ No 4 SKIP to Section 8.
7.17 Have you completed Table E by reporting qualitative data for TCDD?
❑ Yes ❑ No
SECTION 8.USED OR MANUFACTURED TOXICS(40 CFR 122.21(g)(9))
8 1 Is any pollutant listed in Table B a substance or a component of a substance used or manufactured at your facility as
an intermediate or final product or byproduct?
❑ Yes ❑� No 4 SKIP to Section 9.
8.2 List the pollutants below.
1. 4. 7.
2. 5. 8.
3. 6. 9.
EPA Form 3510-2C(Revised 3-19) Page 5

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05/19
110012850192 NC0085553 Village of Bald Head Island OMB No.2040-0004
•ECTION 9. BIOLOGICAL TOXICITY TESTS(40 CFR 122.21(g)(11))
9.1 Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made
within the last three years on(1)any of your discharges or(2)on a receiving water in relation to your discharge?
❑ Yes ❑ No 4 SKIP to Section 10.
5
9.2 Identify the tests and their purposes below.
Test(s) Purpose of Test(s) Submitted to NPDES Date Submitted
o Permitting Authority?
671
Acute Toxicity Tests For Determining Acute ✓❑ Yes ❑ No 10/11/2022
(quarterly) Toxicity In A Single
0
0
❑ Yes ❑ No
❑ Yes ❑ No
.ECTION 10.CONTRACT ANALYSES(40 CFR 122.21(g)(12))
10.1 Were any of the analyses reported in Section 7 performed by a contract laboratory or consulting firm?
❑ Yes ✓❑ No 4 SKIP to Section 11.
10.2 Provide information for each contract laboratory or consulting firm below.
Laboratory Number 1 Laboratory Number 2 Laboratory Number 3
Name of laboratory/firm
Laboratory address
6,61
U
0 Phone number
Pollutant(s)analyzed
SECTION 11.ADDITIONAL INFORMATION(40 CFR 122.21(g)(13))
11.1 Has the NPDES permittingauthorityrequested additional information?
q
❑✓ Yes ❑ No 4 SKIP to Section 12.
0
E 11.2 List the information requested and attach it to this application.
c
Discharge Alternatives Evaluation-Potential Alternatives to
Eliminate Whole Effluent Toxicity(WET) Test Failures
m
0
2 5.
a
3. 6.
EPA Form 3510-2C(Revised 3-19) Page 6

EPA Identification Number NPDES Permit Number Facility Name Form Approved 03/05119
110012850192 Village of Bald Head Island OMB No.2040-0004
1 SECTION 12.CHECKLIST AND CERTIFICATION STATEMENT(40 CFR 122.22(a}and(dl)
12.1 In Column 1 below,mark the sections of Form 2C that you have completed and are submitting with your application.
For each section,specify in Column 2 any attachments that you are enclosing to alert the permitting authority.Note
that not all applicants are required to complete all sections or provide attachments.
Column 1 Column 2
r❑ Section 1:Outfall Location 0 wl attachments
O Section 2:Line Drawing Q w/line drawing ❑ wl additional attachments
rji Section 3:Average Flows and w/list of each user of
Treatment 9 w/attachments ❑ privately owned treatment
works
Q Section 4:Intermittent Flows ❑ wl attachments
O Section 5:Production ❑ w/attachments
w/optional additional
Section 6:Improvements ❑ w/attachments ❑ sheets describing any
additional pollution control
plans
❑ w/request for a waiver and ❑ w/explanation for identical
supporting information outfalls
wl small business exemption wl other attachments
❑ request ❑
En Section 7:Effluent and Intake
g
Characteristics wl Table A 0 w/Table B
0 wl Table C ❑ w/Table 0
r ❑ w/analytical results as an
w/Table E ❑ attachment
7 0 Section 8:Used or Manufactured ❑ wl attachments
Toxics
Di Section 9:Biological Toxicity ❑ w/attachments
Tests
ca
9 Section 10:Contract Analyses ❑ w/attachments
0 Section 11:Additional Information D w/attachments
Q Section 12:Checklist and ❑ w/attachments
Certification Statement
12.2 Certification Statement
1 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 fine and imprisonment for knowing violations.
Name(print or type first and last name) Official title
Chris McCall Village Manager
Signature Date signed
11/Zte/2a2z
EPA Form 3510.2C(Revised 3-19) Page 7

This page intentionally left blank.

Attachment 2
Outfall Location Map

•
J Cape Fear River r , .t ..,
r I
IDischarge ;/
I { ~ NC0085553,...7 ,�
414/0/4
( Sample Point U ..
. _44,
" SamplePointD
i i '‘; .sue.' :! << i
,, ;. • t •t ,r, iP•
-Igtilill
,' ij "' Bald Head Island Marina ,...4
. at-I
:,„,
. e.
J ` t
Bel Heed i -- /i, a ! 4--- �, `' .t: - ? lc A
stand , .I, ,> /,x,� '• >� y� _:. \ \. s ,-- ,p.
r •
t'e
,,,�'r -rw9 / `ir /,, hs ''x _",,"G ,,,.�. �� , .- ' '.` ,- .r., • r ;tip.
\.,a,-,, _ - . Outfa11 Wiz ,• \ ri L=M n f D`• .-"r -„a• "%-5I/{;� _��
1 - ram' g 4 +n Cx •�+• '� l s - d r.g
`/<` y' 2 '' •..'.A• I]�Qy�; ' • - '5 ,r .ix a} A• C/e�,j u' t.,-3, '-.'izi 1 �?fr�i`i'.
// ! `^"• R y y~\ ... 4 } k-Lk1: -. + '� y t r i▪ ~y i l nv 4'--' i'i i s
// .. 1 3. 1w. sr3 "ilY r ". Y.. i C '1a II",n+' + -'1. f+. 5 - i.: !d, c
.,/, i.� ., . . +, ,.r ^y ,% r x ,, _S,Y ti��',l`: /,/.4u . rh nr . ,. r
/.• (•y .h 'R • • �•�ry ,f-r � ,\x l: F K ^y,, _ N.,..:..
lr . /a- t-;ii.lA -, x.
-:e,,,-/- ih.,,,
- - .--,--_., . ..,_, . -.;'''r.-•:,k,.,
\S \\\ • \i\\ .,,A. Y fM 'Q`-• \ ` .` , rI 4
29 1 '10 ' :< a i" . f r• i# ^X.tt l` \% %
4.
it
S s fin.' : ..
.
: 1 1` e'4�1� �rti Bald Head Island WTP ,r `
c�- 'J r x ::
/f11
1 . .t J.'. .. ...\ \ \a r '
Village of Bald Head Island -
ti,
Bald Head Island TP j W
NPDES Permit NC0085553A __
Facility Location -- - ,a,.
•
Receiving Stream: Bald Head Island Marina Basin Stream Class: SC scale not shown
Stream Segment: 18-88-8-5 Sub-Basin#: 03-06-17 '✓
River Basin: Cape Fear HUC:0303000508 SCALE USGS Quad:Southport
County: Brunswick 1:24,000 33.87694°,-78.00111°

Attachment 3
Flow Schematic Line Drawing

,
Reverse Osmosis Reject
Water Waste Stream
Outfall 001—NC0085553
0.0706 MGD
0.0706 MGD
Raw Water Su I Wells 0.359 Reverse Osmosis Water 0.245 0.288 0.288 0.288
16 Each y MGD MGD MGD 0.40 MG MGD High Service Finished MGD To Distribution
Treatment Plant
Three(3)Trains Finished Water Water Pump Station System
Clearwell 0.864 MGD(400 GPM)
0.043 MGD Bypass Blend ►

Attachment 4
DMR Data (October 2021 — September 2022)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 10-2021(October 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
E t
Grab Grab Grab Grab
p• y j pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
2
3
4
5
6 8:05 6.44 6.61 51100 33.3
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Average: 6.61 51100 33.3
Daily Maximum: 6.44 6.61 51100 33.3
Daily Minimum: 6.44 6.61 51100 33.3
■•••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_NC0085553_Ver_1.0_10_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 10-2021(October 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
E "e 2: S
a.a. F P.
$
E v. a C •
y a = E a. Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
0 , F 3
E. u' ` ` o . Recorder Grab Grab Grab Grab Grab Grab Grab Grab
I' e D U a
6' U f-' O O O i FLOW pH CHLORINE VHS-N-Cont DO TOTALN- TOTALP-Cone As-TOTAL CHLORIDE
2400 clock Hrs 2400 clock Hrs Y/R/N mgd su ug/I mg/1 mg/1 mg/I mg/1 ug/I mg/1
I 6:10 10 0.055
2 0.064
3 0.064
4 7:10 8 0.064
5 6:10 10 0.045
6 8:30 6:10 10 0.054 7.7 3.1 6.71 4.2 1 23 516
' 7 6:10 10 0.01
8 6:10 10 0.04
9 0.068
10 0.068
II 7:10 8 0.068
•
12 6:10 10 0.036
13 6:10 10 0.05
14 6:10 10 0.07
15 7:10 8 0.042
16 0.059
17 0.059
18 7:10 8 0.059
19 7:10 8 0.054 7.2
20 6:10 10 0.043
-
21 7:10 8 0.064
22 7:10 8 0.054
23 0.072
24 0.072
25 7:10 8 0.072
26 7:10 8 0.051
27 7:10 8 0.041
28 7:10 8 0.049
29 7:10 8 0.058
30 0.058
31 0.058
Monthly Average Limit: 10
Monthly Avenge: 0.055516 3.1 6.71 4.2 I 23 516
Daily Maximum: 0.072 7.7 3.1 6.71 4.2 1 23 516
Daily Minimum: 0.01 7.2 3.1 6.71 4.2 I 23 516
••••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_NC0085553_Ver_1.0_10_2021.pd0

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 10-2021 (October 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
E '
00094 01042 TGE3E 00480 70295 00070 01092
E
u] .-.. .-. ._ _
1 e . a
i I:E e Monthly Monthly Quarterly Monthly Monthly Monthly Monthly
8 G - 1
u o 8 Grab Grab Grab Grab Grab Grab Grab
u I. a b
b U el
8 u 2 $ O O ; CNDUCTVY COPPER MYSD24PF SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hn 2400 clock Hn Y/B/N umhos/cm ug/1 pass/fail ppt mg/1 ntu ug/I
I 6:10 10
2
3
4 7:10 8
5 6:10 10
6 8:30 6:10 10 3180 <10 P 1.7 2090 9.9 <10
7 6:10 10
8 6:10 10
9
10
11 7:10 8
12 6:10 10
13 6:10 10
14 6:10 10
15 7:10 8
16
17
18 7:10 8
19 7:10 8
20 6:10 10
21 7:10 8
22 7:10 8
23
24
25 7:10 8
26 7:10 8
27 7:10 8
28 7:10 8
29 7:10 8
30
31
Monthly Avenge Limit: 17 85.6
Monthly Avenge: 3180 0 1.7 2090 9.9 0
Daily Maximum: 3180 0 1.7 2090 9.9 0
Daily Minimum: 3180 0 1.7 2090 9.9 0
••"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_NC0085553_Ver_1.0_10_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:10-2021(October 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
= Monthly Monthly Monthly Monthly
_ c Grab Grab Grab Grab
E e
pH DO CNDUCTVY SALINITY
2400 clock su my-1 umhos/cm ppt
3
4
5
6 8:10 6.71 8.2 1 51700 33.9
7
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Lima:
Monthly Avenge: 8.21 51700 33.9
May Mmlmum: 6.71 8.21 51700 33.9
Doily Minimum: 6.71 8.21 51700 33.9
'000 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_NC0085553_Ver 1.0_10_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 10-2021 (October2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Non-Compliant CONTACT PHONE#:[phone] SUBMISSION DATE: 11/29/2021
Electronically Certified by David Albert Suther on 2021-11-22 13:36:28.526
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2021-11-29 09:46:46.722
Permittee/Submitter Signature: * * *Joseph McCann Phone #: [phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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 NC0085553_Ver_1.0_10_2021.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:10-2021(October 2021) VERSION:1.0 STATUS:Submitted
Report Comments:
Arsenic Exceeded for Dailey Max and Monthly Average.

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:11-2021(November 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
• 00400 00300 00094 00480
a
Monthly Monthly Monthly Monthly
= f
Grab Grab Grab Grab
pH DO CNDUCTVY SALINITY
2400 clock su mg/l umhos/cm ppt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 8:05 6.97 12.34 53600 35.3
25
26
27
28
29
30
Monthly Avenge Limit:
Monthly Avenge: 12.34 53600 35.3
Daily Marimum: 6.97 12.34 53600 35.3
Daily Minimum: 6.97 12.34 53600 35.3
""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_NC0085553_Ver 1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 11-2021(November 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
I
F E .1 in1
F
_ o
mE. m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
e` a In
u° p I. Recorder Grab Grab Grab Grab Grab Grab Grab Grab
E . a it Y
C' U f-' O O O z' FLOW pH CHLORINE NH3-N-Cooc DO TOTAL N- TOTAL P-Cone As-TOTAL CHLORIDE
2400 dock Hn 2400 dock Hra v/e/N mgd su ug/I mg/I mg/I mg/I mg/I ug/I mg/I
1 7:10 8 Y 0.048
2 6:10 10 Y 0.047
3 6:10 10 Y 0.047
4 6:10 10 Y 0.055
5 6:10 10 Y 0.054
6 0.055
7 ,0.055
8 7:10 8 Y 0.055
9 7:10 8 Y 0.052
10 6:10 10 Y 0.033
li 6:10 10 Y 0.031
12 6:10 10 N 0.031
13 0.088
14 0.088
15 7:10 8 Y 0.088
16 7:10 8 Y 0.053
17 7:10 8 Y 0.051
18 6:10 10 Y 0.04
19 6:10 10 Y 0.055
20 0.064
21 0.064
22 7:10 8 Y 0.064
23 6:10 10 Y 0.054
24 7:20 6:10 10 Y 0.053 7.5 1.9 5.31 <10 358
25 0.059
26 0.059
27 0.059
28 0.059
29 7:10 8 Y 0.059
30 7:10 8 Y 0.055 7.2
Monthly Avenge Limit: 10
Monthly Avenge: 0.055833 1.9 5.31 0 358
Doily Maximum: 0.088 7.5 1.9 5.31 0 358
Daily Minimum:
0.031 7.2 1.9 5.31 0 358
••"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_NC0085553_Ver_1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 11-2021(November 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
E
d F B m 3
8 = t C C
y 8 " as Monthly Monthly Monthly Monthly Monthly Monthly
At e < F — E
u' —t 8s Grab Grab Grab Grab Grab Grab
e a IA
u F' 8' O O z' CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 dock Hrs Y/B/N umhos/cm ug/1 ppt mg/1 ntu ugh
i 7:10 8 Y
2 6:10 10 Y
3 6:10 10 Y
4 6:10 10 Y
5 6:10 10 Y
6
7
8 7:10 8 Y
9 7:10 8 Y
10 6:10 10 Y
11 6:10 10 Y
12 6:10 10 N
13
14
15 7:10 8 Y
16 7:10 8 Y
17 7:10 8 Y
10 6:10 10 Y
19 6:10 10 Y
20
21
22 7:10 8 Y
23 6:10 10 Y
24 7:20 6:10 10 Y 2890 <10 1.5 1860 2.2 0.02
25
26
27
28
29 7:10 8 Y
30 7:10 8 Y
Moodily Average Limit: 3.7 05.6
Monthly Avenge: 2890 0 1.5 1860 2.2 0.02
Daily Maximum: 2890 0 1.5 1860 2.2 0.02
Daily Minimum: 2890 0 1.5 1860 2.2 0.02
'•••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_NC0085553_Ver 1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:11-2021(November 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
- T
Grab Grab Grab drab
PH DO CNDUC7'VY S.\I.I�lil'
2400 clock su mg/l umhos/cm ppt
3
4
s
6
7
8
9
10
II
12
13
14
15
16
17
18
19
20
21
22
23
24 8:00 6.8 10.58 52700 34.7
25
26
27
28
29
30
Monthly Average Limit:
Monthly Average: 10.58 52700 34.7
Daily Maximum: 6.8 10.58 52700 34.7
Davy Mhttmum: 6.8 10.58 52700 34.7
••••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 NC0085553_Ver 1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 11-2021(November 2021) VERSION: 1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:01/01/2022
Electronically Certified by David Albert Suther on 2021-12-28 13:07:06.825
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-01-01 01:27:52.078
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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 NC0085553_Ver_1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:12-2021(December 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
_ s
PH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
•
4
5
6
7
0
9
10
11
•
12
13
14
15 9:05 6.8 I .5 51900 34
16
17
18
19
20
21
22
23 I
24
25
26
27
•
20
29
30
31
•
Monthly Avenge Limit:
Monthly Avenge: 18.5 51900 34
Deily Maximum: 6.8 18.5 51900 34
Deily Minimum: 6.8 18.5 51900 34
No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=NoFlow; HOLIDAY=No Visitation—Holiday
Discharge Monitoring Report-Copy Of Record(COR_NC0085553_Ver_1.0_12_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 12-2021 (December 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
F F A.
m B
O`
2 8 I m I. Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
e e P f
8 _u' o S Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a e n 8 'd A
U [=8 O O O i FLOW pH CHLORINE NH3-N-Coot DO TOTAL N- TOTAL P.Coot As-TOTAL CHLORIDE
2400 clock Hrs 2400 clock Hrs Y/B/N mgd su ugh mg/1 mg/I mg/I mg/I ug/I mg/I
1 6:10 10 B 0.039
2 6:10 10 B 0.046
3 6:10 10 B 0.034
4 0.044
5 0.044
6 7:10 8 Y 0.044
7 6:10 10 B 0.031
8 6:10 10 B 0.038
9 7:10 9 N 0.037
10 7:10 9 B 0.062
t 1 0.037
12 0.037
13 9:40 3 N 0.037
14 7:10 9 N 0.034
15 8:40 7:10 9 N 0.04 7.2 2 10.7 <10 232
16 6:10 10 N 0.036
17 7:10 9 N 0.04
18 0.052
19 0.052
20 9:14 3 N 0.052
21 7:10 9 N 0.039
22 7:10 9 N 0.037
23 0.036
24 0.036
25 0.036
26 0.036
27 0.036
28 7:10 8 Y 0.036 7.3
Z9 7:10 8 Y 0.059
30 7:10 8 Y 0.07
31 0.06
Monthly Average Limit: 10
Monthly Avenge: 0.042484 2 10.7 0 232
Daily Maximum: 0.07 7.3 2 10.7 0 232
Daily Minimum: 0.031 7.2 2 10.7 0 232
••••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 NC0085553_Ver 1.0_12_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 12-2021 (December2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
I
F 0 .i in _
P. O
41 E. z E m Monthly Monthly Monthly Monthly Monthly Monthly
e a i- in f
E. u 8 a Grab Grab Grab Grab Grab Grab
a e 5 5 u X
O CJ F 8' 8' O z' CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hn 2400 clock Hn Y/B/N umhoa/cm ug/I ppt mg/1 nlu ug/I
1 6:10 10 B
2 6:10 10 B
3 6:10 10 B
4
5
6 7:10 8 Y
7 6:10 10 B
8 6:10 10 B
9 7:10 9 N
10 7:10 9 B
11
12
13 9:40 3 N
14 7:10 9 N
15 8:40 7:10 9 N 2410 <10 1.2 1560 0.8 <10
16 6:10 10 N
17 7:10 9 N
18
19
20 9:14 3 N
21 7:10 9 N
22 7:10 9 N
23
24
25
26
27
28 7:10 8 Y
29 7:10 8 Y
30 7:10 8 Y
31
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 2410 0 1.2 1560 0.8 0
Daily Maximum:
2410 0 1.2 1560 0.8 0
Daily Minimum: 2410 0 1.2 1560 0.8 0
•'•'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_NC0085553_Ver_1.0_12_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 12-2021(December2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 004110
9 e Monthly Monthly Monthly Monthly
= t
,y� 8 Grab Grab Grab Grab
pH DO C9DUCTVY SALINITY
2400 dock su mg/1 umhos/cm ppt
1
2
3
4
5
6
7
8
9
10
1
12
13
14
15 9:00 6.7 18.4 53400 35
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Avenge: 18.4 53400 35
Dolly M'.tmum: 6.7 18.4 53400 35
Doily Minimum: 6.7 18.4 53400 35
•"•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_NC0085553 Ver_1.0_12_2021.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:12-2021(December 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:01/27/2022
Electronically Certified by David Albert Suther on 2022-01-26 10:51:51.406
ORC/Certifier Signature:David Albert Suther Phone # : 910- 457 - 7352 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 Joseph McCann on 2022-01-27 10:47:45.923
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver_1.0_12_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
fi Monthly Monthly Monthly Monthly
8 Grab Grab Grab Grab
S li
y 7 pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
2
3
4
5
6
7
8
9
10
11
12 9:05 6.9 5.5 41900 26.8
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 5.5 41900 26.8
Duly Minimum. 6.9 5.5 41900 26.8
Daily Minimum: 6.9 5.5 41900 26.8
'•"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_NC0085553_Ver_1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
E gi
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
F E E r-- 8 A
d O
,A S. ': E Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E a -E. u' a Recorder Grab Grab Grab Grab Grab Grab Grab Grab
Y. E w n :r Li tY
C U f-' O 8. o zo FLOW pH CHLORINE NH3-N-Cone DO TOTALN- TOTALP-Coot As-TOTAL CHLORIDE
2400 clock xn 2400 clock Hrs Y/R/N mgd su ug/I mg/1 mg/1 mg/I mg/I ug/1 mg/1
i 0.06
2 0.06
3 7:10 8 B 0.06
4 7:10 10 B 0.05
5 7:10 10 B 0.055
6 6:10 10 B 0.042
7 7:10 10 B 0.043
0 0.044
9 0.044
10 7:10 8 B 0.044
11 6:10 10 N 0.04
12 8:20 6:10 10 B 0.027 7.4 <0.2 8.5 3.8 0.91 <10 363
13 6:10 10 N 0.03
14 6:10 10 N 0.03
15 0.039
16 0.039
17 N 0.039
18 7:10 8 N 0.039
19 6:10 10 N 0.034
20 6:10 10 N 0.025
21 N 0.037
22 0.037
23 0.037
24 7:10 8 B 0.037
25 6:10 10 B 0.032
26 6:10 10 B 0.042 7.1
27 6:10 10 B 0.032
28 6:10 10 B 0.032
29 0.029
30 0.029
31 7:10 8 B 0.029
Monthly Average Limit: 10
Monthly Average: 0.039258 0 8.5 3.8 0.91 0 363
Daily Maximum: 0.06 7.4 0 8.5 3.8 0.91 0 363
Daily Minimum:
0.025 7.1 0 8.5 3.8 0.91 0 363
•'•'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_NC0085553_Ver_1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 TGE3E 00480 70295 00070 01092
I 0 E y
F
a v 7. O a
9 a 8 m Monthly Monthly Quarterly Monthly Monthly Monthly Monthly
E P.
8. u' i
5 o g Grab Grab Grab Grab Grab Grab Grab
d e D u a9
O U 2 O O O ZZ CNDUCTVY COPPER MYSD24PF SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 clock Hrs Y/B/N umhos/cm ugh pass/fail ppt mg/1 ntu ug/l
1
2
3 7:10 8 B
4 7:10 10 B P
5 7:10 10 B
6 6:10 10 B
7 7:10 10 B
8
9
10 7:10 8 B
11 6:10 10 N
12 8:20 6:10 10 B 2720 <10 1.4 1800 7.4 <10
13 6:10 10 N
14 6:10 10 N
15
16
17 N
18 7:10 8 N
19 6:10 10 N
20 6:10 10 N
21 N
22
23
24 7:10 8 B
25 6:10 10 B
26 6:10 10 B
27 6:10 10 B
2g 6:10 10 B
29
30
31 7:10 8 B
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 2720 0 1.4 1800 7.4 0
Daily Maximum: 2720 0 1.4 1800 7.4 0
Daily Minimum: 2720 0 1.4 1800 7.4 0
•a•a 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_NC0085553_Ver_1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
rY
Monthly Monthly Monthly Monthly
21.
Grab Grab Grab Grab
r i PH DO CNDUCTYY S11.I S11'Y
2400 clock su mg/I umhos/cm ppt
3
4
5
6
7
8
9
10
11
12 9:00 6.9 9.2 40700 25
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 9.2 40700 25
Daily Maximum: 6.9 9.2 40700 25
Daily Minimum: 6.9 9.2 40700 25
"••No Repotting 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 NC0085553 Ver_1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:02/25/2022
Electronically Certified by David Albert Suther on 2022-02-23 13:38:55.876
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-02-25 11:24:55.366
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver_1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
1
� t
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
6 a
pl I DO CNDUCTVY SALINITY
2400 clock yu mg/I umhos/cm ppt
2
3
4
5
6
7
8
9
10 9:00 6.5 13.8 47100 30.6
It
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Monthly Avenge Limit:
Monthly Average: 3.8 47100 30.6
Daily Maximum: 6.5 3.8 47100 30.6
Daily Minimum: 6.5 13.8 47100 30.6
"•'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_NC0085553_Ver_1.0_2_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
I_
e
E ..29 O "
S = 5 %— Continuous 2 X month -2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
8 u - e8 8 Recorder Grab Grab Grab Grab Grab Grab Grab Grab
0 o e n u C m
C u F O O O 7 FLOW pH CHLORINE NH3-N-Cone DO TOTALN- TOTALP-Cone As-TOTAL CHLORIDE
2400 clock Hn 2400 clock Hn Y/R/N mgd su ug/1 mg/1 mg/I mg/I mg/1 ug/I mg/I
1 8:10 8 B 0.035
2 6:10 10 B 0.033
3 6:10 10 B 0.026
4 7:10 8 Y 0.036
5 0.034
6 0.034
7 7:10 8 Y 0.034
8 6:10 10 B 0.032
9 6:10 10 B 0.038
Io 9:20 6:10 10 B 0.026 6.9 2.6 13.8 <10 500
11 6:10 10 B 0.032
12 0.021
13 0.021
14 7:10 8 Y 0.021
15 6:10 10 B 0.034
16 6:10 10 0.034
17 6:10 10 B 0.045
18 7:10 8 Y 0.051
19 0.045
20 0.045
21 7:10 8 Y 0.045
22 6:10 10 B 0.049
23 6:10 10 B 0.039 7.6
24 7:10 8 Y 0.043
25 0.048
26 0.047
27 0.047
28 9:40 6.5 N 0.047
Monthly Avenge limit: 10
Monthly avenge: 0.037214 2.6 13.8 0 500
Daily Maximum: 0.051 7.6 2.6 13.8 0 500
Deny Minimum: 0.021 6.9 2.6 13.8 0 500
I'm 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_NC0085553_Ver_1.0_2_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
ii 00094 01042 00480 70295 00070 01092
E •
" F a O 1
y — t E m Monthly Monthly Monthly Monthly Monthly Monthly
E < F a E
8 u' i 2 O g Grab Grab Grab Grab Grab Grab
0 a " z o:
S V 2 O 8' O 7 CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hro 2400 clock Hn Y/BIN umhos/cm ug/l ppt mg/1 ntu ug/I
I 8:10 8 B
2 6:10 10 B
3 6:10 10 B
4 7:10 8 Y
5
6
7 7:10 8 Y
8 6:10 10 B
9 6:10 10 B
10 9:20 6:10 10 B 3460 <10 1.8 2220 0.7 20
II 6:10 10 B
12
13
14 7:10 8 Y
15 6:10 10 B
16 6:10 10
17 6:10 10 B
I8 7:10 8 Y
19
20
21 7:10 8 Y
22 6:10 10 B
23 6:10 10 B
24 7:10 8 Y
25
26
27
28 9:40 6.5 N
Monthly Average Limit: 3.7 85.6
Moonily Average: 3460 0 1.8 2220 0.7 20
Daily Maximum: 3460 0 1.8 2220 0.7 20
Daily Minimum: 3460 0 1.8 2220 0.7 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_NC0085553_Ver_1.0_2_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00000 00300 00094 00480
a"
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
e'
pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
1
2
7
4
5
6
7
8
9
10 8:55 6.7 23.8 45300 29.2
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Monthly Avenge Limit:
Monthly Avenge: 23.8 45300 29.2
Daily Maximum: 6 7 23.8 45300 29.2
Daily Minimum: 6.7 23.8 45300 29.2
""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_NC0085553_Ver_1.0_2_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:04/25/2022
Electronically Certified by David Albert Suther on 2022-03-25 09:14:24.253
ORC/Certifier Signature:David Albert Suther Phone # : 910 -457 - 7352 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 Joseph McCann on 2022-04-25 07:33:14.99
Permittee/Submitter Signature: ** *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver_1.0_2_2022.pdf)

— 1
NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
s
fi Monthly Monthly Monthly Monthly
d � Grab Grab Grab Grab
p � pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
1
2
3
4
5
6
7
8
9 9:10 7.78 10.31 44700 28.6
10
n
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Avenge: 10.31 44700 28.6
Daily Maximum: 7.78 10.31 44700 28.6
Daily Minimum: 7.78 10.31 44700 28.6
••"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_NC0085553_Ver_1.0_3_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
I a
F E rE i
▪ F_ 7 O
h - E m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
e' a r- a f
u - - O° = Recorder Grab Grab Grab _ Grab _ _Grab Grab Grab Grab
. E 7 a a`. 8 z A _
O u 2 O O FLOW pH CHLORINE NH3-N-Coot DO TOTAL N- TOTAL P-Coot An-TOTAL CHLORIDE
2400 clock Urn 2400 clock Urn Y/R/N mgd su ug/I mg/I mg/I mg/1 mg/I ug/I mg/I
1 7:10 8 B 0.025
2 6:10 10 B 0.046
3 6:10 10 B 0.014
4 6:10 10 B 0.057
5 0.047
6 0.047
7 7:10 8 B 0.047
8 6:10 10 B 0.045
9 8:40 6:10 10 B 0.049 7.6 2 4.61 22 264
10 6:10 10 B 0.063
II 6:10 10 B 0.039
12 0.046
13 0.046
14 7:10 8 B 0.046
15 6:10 10 B 0.039
16 6:10 10 B 0.053
17 6:10 10 B 0.058
18 6:10 10 B 0.058
19 0.057
20 0.057
21 7:10 8 B 0.057
22 6:10 10 B 0.057
23 7:10 10 B 0.065
24 6:10 10 B 0.044
25 7:10 10 B 0.059
26 0.069
27 0.069
28 7:10 8 B 0.069
29 6:10 10 B 0.061 7.3
30 6:10 10 B 0.049
31 6:10 10 B 0.067
Monthly Avenge Limit: 10
Monthly Avenge: 0.051774 2 4.61 22 264
Daily Maximum:
- 0.069 7.6 2 4.61 22 264
Daily Minimum: 0.014 7.3 2 4.61 22 264
••••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_NC0085553_Ver_1.0_3_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
i i
1•. F F w S
9 g
g i ieo Monthly Monthly Monthly Monthly Monthly Monthly
6 < I- '„ r
u afi Grab Grab Grab Grab Grab Grab
e e u of
S U 2 & & O Z CNDUCTVY COPPER SALINITY RESIDISS TURBIDTY ZINC
2400 dock Fin 2400 dock Bn Y/B/N umhos/cm ug/1 ppt mg/1 ntu ugh
1 7:10 8 B
2 6:10 10 B
3 6:10 10 B
4 6:10 10 B
5
6
7 7:10 8 B
8 6:10 10 B
9 8:40 6:10 10 B 2600 <10 1.3 1680 13.3 <10
10 6:10 10 B
11 6:10 10 B
12
13
14 7:10 8 B
15 6:10 10 B
16 6:10 10 B
17 6:10 10 B
18 6:10 10 B
19
20
21 7:10 8 B
22 6:10 10 B
23 7:10 10 B
24 6:10 10 B
25 7:10 10 B
26
27
28 7:10 8 B
29 6:10 10 B
J0 6:10 10 B
J1 6:10 10 B
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 2600 0 1.3 1680 13.3 0
Doily Maximum: 2600 0 1.3 1680 13.3 0
Dauy Minimum: 2600 0 1.3 1680 13.3 0
""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_NC0085553_Ver_1.0_3_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
s
6 Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
w S 7 pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
3
4
5
6
7
8
9 9:05 6.98 12.3 45600 29.4
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:
12.3 45600 29.4
Daily Maximum:
6.98 12.3 45600 29.4
Daily Minimum:
6.98 12.3 45600 29.4
••••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_NC0085553_Ver_1.0_3_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Non-Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:05/02/2022
Electronically Certified by David Albert Suther on 2022-04-27 11:17:19.025
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-05-02 08:05:09.324
Permittee/Submitter Signature: * * *Joseph McCann Phone #: [phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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
submitted is,to the best of myknowledge and belief,true,
or those persons directly responsible for gathering the information,the information g ,
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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 NC0085553_Ver_1.0_3_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION:1.0 STATUS:Submitted
Report Comments:
Arsenic limit was exceeded.

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
• 00400 00300 00094 00480
a
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
y a
S 7 pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
2
3
4
5
6
7 8:45 6.9 10 37700 23.6
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Monthly Avenge Limit:
Monthly Avenge: 10 37700 23.6
Daily Mnimum: 6.9 10 37700 23.6
Daily Minimum: 6.9 10 37700 23.6
••••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_NC0085553_Ver 1.0_4_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
I
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
li
Al P. '
R. E E- in
8
8 c E_ r.
Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
e < P. a I Li. 1
u 8n Recorder Grab Grab Grab Grab Grab Grab Grab Grab
u e E 5 8 C
(]' U 2 6: O O Z. FLOW pH CHLORINE NH3-N-Cone DO TOTALN- TOTALP-Cone As-TOTAL CHLORIDE
2400 clock Hn 2400 clock Hn Y/B/N mgd su ug/I mg/I mg/I mg/I mg/I ug/I mg/1
I 6:10 10 Y 0.066
2 0.058
3 0.058
4 7:10 8 Y 0.058
5 6:10 10 Y 0.037
6 6:10 10 Y 0.036
7 8:25 6:10 10 Y 0.036 7.5 0.9 5.29 5.6 10.1 <10 485
8 6:10 10 Y 0.038
-
9 0.067
10 0.067
11 7:10 8 Y 0.067
-
- -
12 6:10 10 Y 0.066
13 6:10 10 Y 0.041
-
14 6:10 10 Y 0.062
15 0.072
16 0.07E ,
17 0.07E
IS 7:10 8 Y 0.07E 7.3
19 7:10 8 Y 0.06E
20 7:10 8 Y 0.074
21 7:10 8 N 0.049
-
22 6:10 10 N 0.05
L3 0.047
24 0.047
+
25 7:10 8 Y 0.047
26 6:10 10 Y 0.044
27 6:10 10 Y 0.037
2e 6:10 10 Y 0.039
-
29 6:10 10 Y 0.058
30 0.064
Monthly Avenge Limit: 10
Monthly Avenge:
0.055433 0.9 5.29 5.6 10.1 0 485
Daily Maximum:
0.074 7.5 0.9 5.29 5.6 10.1 0 485
Daily Minimum:
0.036 7.3 0.9 5.29 5.6 10.1 0 485
••••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_NC0085553_Ver_1.0_4_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 TGE3E 00480 70295 00070 01092
•
6 yg •
P F H $
a !7
8 6 Monthly Monthly Quarterly Monthly Monthly Monthly Monthly
e <` F — E
S. Grab Grab Grab Grab Grab Grab Grab
e s I p" aC U 2 O O 7 CNDUCTVY COPPER MYSD24PF SALINITY RES/DISS TURBIDTY ZINC
2400 dock Hn 2400 dock firs Y/B/N umhos/cm ug/1 pass/fail ppt mg/I ntu ug/1
1 6:10 10 Y
2
3
4 7:10 8 Y
5 6:10 10 Y
6 6:10 10 Y
7 8:25 6:10 10 Y 2940 <10 PASS 1.5 1850 0.5 62
8 6:10 10 Y
9
10
11 7:10 8 Y
12 6:10 10 Y
13 6:10 10 Y
14 6:10 10 Y
15
16
17
18 7:10 8 Y
19 7:10 8 Y
20 7:10 8 Y
21 7:10 8 N
22 6:10 10 N
23
24
25 7:10 8 Y
26 6:10 10 Y
27 6:10 10 Y
28 6:10 10 Y
29 6:10 10 Y
30
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 2940 0 1.5 1850 0.5 62
Daily Maximum: 2940 0 1.5 1850 0.5 62
Doily Minimum: 2940 0 1.5 1850 0.5 62
•"'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_NC0085553_Ver_1.0_4_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
z"
PH Do CNDUCTVY S.0LI\Ill'
2400 clock gu mg 1 uuhos/cm opt
2
3
4
5
6
7 8.40 6.8 13.1 37800 23.9
9
10
n
12
u
14
15
16
17
18
19
ZU
21
22
23
24
25
26
27
28
29
30
Monthly Average Limk:
Monthly Average:
13.4 37800 23.9
Only M.oimom: 6.8 13.4 37800 23.9
Daley Minimum: 6.8 13.4 37800 23.9
""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 NC0085553_Ver_1.0_4_2022.pdf)

1
NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:06/01/2022
Electronically Certified by David Albert Suther on 2022-05-24 12:46:04.281
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-06-01 06:54:12.475
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver_1.0_4_2022.pd0

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
F
i a Grab Grab Grab Grab
a E a
Jj i pH DO CNDUCTVY SALINITY
2400 dock su mg/1 umhos/cm ppt
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 8:10 7.02 4.43 52500 34.5
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average:
4.43 52500 34.5
Daily Maximum:
7.02 4.43 52500 34.5
Daily Minimum:
7.02 4.43 52500 34.5
aa'a 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_NC0085553_Ver_1.0_5_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
•
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
•
I
m F in e
= gS
c' 6
St
E Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E <T.
a
u° 8 = O` a Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a. s n g S m
S U F O g O i FLOW pH CHLORINE NH3-N-Cone DO TOTAL N- TOTAL P-Co. As-TOTAL CHLORIDE
2400 clock Hn 2400 dock Hn Y/R/N mgd su ugh mg/I mg/I mg/I mg/1 ug/I mg/I
1 0.063
2 6:10 10 Y 0.063
3 6:10 10 Y 0.049
4 6:10 10 Y 0.095
5 6:10 10 Y 0.036
6 6:10 l0 Y 0.039
7 0.06
0 1 0.06
9 6:10 10 Y I 0.06
10 6:10 10 Y 0.052
II 6:10 10 Y 0.065
12 6:10 10 Y 0.064
13 6:10 10 Y 0.043
14 0.076
-
15 0.076
16 6:10 10 Y 0.076
17 6:10 10 Y 0.076
IS 7:35 6:10 10 Y 0.054 6.72 2.3 5.29 3.4 1.72 0.006 387
19 6:10 10 Y 0.067
20 6:10 10 Y 0.058
21 0.068
22 0.068
23 6:10 10 Y 0.068
24 6:10 10 Y 0.066
25 6:10 10 Y 0.037
26 6:10 10 Y 0.038 6.93
27 6:10 10 Y 0.037
20 0.067
29 0.067
30 6:10 10 Y 0.067
31 6:10 10 B l 0.067
Monthly Avenge Limit: 10
Monthly Avenge: 0.06071 2.3 5.29 3.4 1.72 0.006 387
Deity Maximum: 0.095 6.93 2.3 5.29 3.4 1.72 0.006 387
Daily Minimum: 0.036 6.72 2.3 5.29 3.4 1.72 0.006 387
•*••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_NC0085553_Ver_1.0_5_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
I
F E F a
p — J .
ti z E • IAMonthly Monthly Monthly Monthly Monthly Monthly
fi < F "AY
E. u — o' n Grab Grab Grab Grab Grab Grab
m E 8 U AC U F- O O O Z CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hr. 2400 clock Hr. Y/B/N umhos/cm ug/I ppt mg/I ntu ug/1
1
2 6:10 10 Y
3 6:10 10 Y
4 6:10 10 Y
5 6:10 10 Y
6 6:10 10 Y
7
8
9 6:10 10 Y
10 6:10 10 Y
II 6:10 10 Y
12 6:10 10 Y
13 6:10 10 Y
14
15
16 6:10 10 Y
17 6:10 10 Y
18 7:35 6:10 10 Y 2770 <0.001 1.4 1930 4.6 <0.01
19 6:10 10 Y
20 6:10 10 Y
21
22
23 6:10 10 Y
24 6:10 10 Y
25 6:10 10 Y
26 6:10 10 Y
27 6:10 10 Y
28
29
30 6:10 10 Y
31 6:10 10 B
Monthly Average Limit: 3.7 85.6
Monthly Avenge: 2770 0 1.4 1930 4.6 0
Daily Maximum: 2770 0 1.4 1930 4.6 0
Daily Minimum: 2770 0 1.4 1930 4.6 0
"•'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_NC0085553_Ver_1.0_5_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
a"
Monthly Monthly Monthly Monthly
F t
s � Grab Grab Grab Grab
A pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhoscm ppt
1
2
3
4
5
6
7
8
9
10
1
12
13
14
15
16
17
18 8:05 6.78 4.01 50600 33
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 4.01 50600 33
Daily Maximum: 6 78 4.01 50600 33
Daily Minimum: 6.78 4.01 50600 33
"*"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_NC0085553_Ver_1.0_5_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Non-Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:06/29/2022
Electronically Certified by David Albert Suther on 2022-06-28 12:50:03.484
ORC/Certifier Signature : David Albert Suther Phone # : 910-457 - 7352 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 Joseph McCann on 2022-06-29 08:57:50.179
Permittee/Submitter Signature: * **Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:Envirochem
CERTIFIED LAB#:37729
PERSON(s)COLLECTING SAMPLES:Nathan Lindsay
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_NC0085553_Ver 1.0_5_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION:1.0 STATUS:Submitted
Report Comments:
5/18/22 PH reading was low.

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00400
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
2
3
4
5
6
7
a
9
10
n
12
13
14 10:00 7.02 43 51500 33.7
15
16
17
Ill
19
2U
21
22
23
24
25
26
27
2s
29
30
Monthly Avenge Limit:
Monthly Avenge: 4.3 51500 33.7
Daily Maaimnm: 7.02 4.3 51500 33.7
Daily Minimum: 7.02 4.3 51500 33.7
•"•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_NC0085553_Ver_1.0_6_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
•
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
•
F aF in
fa, v. w O a
yt 6 m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E E F . f
— o ' Recorder Grab Grab Grab Grab Grab Grab Grab Grab
e cc
S u r O g O T FLOW pH CHLORINE NH3-N-Cone DO TOTALN- TOTALP-Cone Af-TOTAL CHLORIDE
2400 dock Ws 2400 dock Hire V/B/N mgd su ug/I mg/I mg/I mg/I mg/1 ug/I mg/I
I 6:10 10 Y 0.037
2 6:10 10 Y 0.037
3 6:10 10 Y 0.03
4 0.023
5 _ 0.023
6 6:10 10 N 0.023
7 6:10 10 Y 0.048
0 6:10 10 Y 0.062
9 6:10 10 Y 0.062
10 6:10 10 Y 0.064
I1 0.062
12 0.062
13 6:10 10 N 0.062
14 9:00 6:10 10 Y 0.064 7.3 3.8 3.34 <10 476
15 6:10 10 Y 0.061
16 6:10 10 Y 0.065
17 6:10 10 Y 0.037
18 0.061
19 0.061
20 6:10 10 N 0.061
21 6:10 10 Y 0.065
22 6:10 10 Y 0.04
23 6:10 10 Y 0.038
24 6:10 10 Y 0.055
25 0.058
26 0.058
27 6:10 10 N 0.058
20 6:10 10 Y 0.063
29 6:10 10 Y 0.059 7.51
30 6:10 10 Y 0.062
Monthly Avenge Limit: 10
Monthly Average: 0.052033 3.8 3.34 0 476
Daily Maximum: 0.065 7.51 3.8 3.34 0 476
Daily Minimum: 0.023 7.3 3.8 3.34 0 476
"'•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_NC0085553_Ver_1.0_6_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
I I a «
d I [- m
F; O
y z E m Monthly Monthly Monthly Monthly Monthly Monthly
e <` a a
8 u Grab Grab Grab Grab Grab Grab
8 k1 G u a`
G V I= O O O z'. CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hn 2400 dock Hn Y/B/N umhos/cm ug/1 ppt mg/1 ntu u4/I
I 6:10 10 Y
2 6:10 10 Y
3 6:10 10 Y
4
5
6 6:10 10 N
7 6:10 10 Y
8 6:10 10 Y
9 6:10 10 Y
t0 6:10 10 Y
II
12
13 6:10 10 N
14 9:00 6:10 10 Y 3060 <10 1.6 1970 3.2 <10
15 6:10 10 Y
16 6:10 10 Y
17 6:10 10 Y
18
I 19
20 6:10 10 N
21 6:10 10 Y
22 6:10 10 Y
23 6:10 10 Y
24 6:10 10 Y
25
26
27 6:10 10 N
28 6:10 10 Y
29 6:10 10 Y
30 6:10 10 Y
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 3060 0 1.6 1970 3.2 0
Daily Maximum: 3060 0 1.6 1970 3.2 0
Daily Minimum: 3060 0 1.6 1970 3.2 0
••••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_NC0085553_Ver_1.0_6_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
•
Monthly Monthly Monthly Monthly
E �
a 8 Grab Grab Grab Grab
S i pH DO CNDUC7W SALINITY
2400 clock su mg/1 umhos/cm ppt
2
3
4
5
6
7
8
9
10
II
12
13
14 10:00 6.19 3.8 52200 34.2
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Monthly Average Limit:
Monthly Avenge: 3.8 52200 34.2
Daily Maximum: 6.19 3.8 52200 34.2
Daily Minimum: 6.19 3.8 52200 34.2
•"'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_NC0085553_Ver 1.0_6_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:08/31/2022
Electronically Certified by Nathan James Lindsay on 2022-08-26 10:53:39.73
ORC/Certifier Signature:Nathan James Lindsay Phone # : 910- 269 - 5718 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 Joseph McCann on 2022-08-31 08:08:02.582
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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 thosepersons directlyresponsible for gatheringthe information,the information submitted is,to the best of myknowledge and belief,true,
� P g
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:Environmental Chemists
CERTIFIED LAB#:94
PERSON(s)COLLECTING SAMPLES:Nathan Lindsay,Ian Carico,Jason Jacobs
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_NC0085553_Ver_1.0_6_2022.pdt)

r-
NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
x
Monthly Monthly Monthly Monthly
= f
s � Grab Grab Grab Grab
m
a' j pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
1
2
3
4
5
6
7
8
9
10 10:15 6.79 3.59 53200 35
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26 1
27
28
29
30
31
Monthly Avenge Limit:
Monthly Avenge: 3.59 53200 35
Dolly Mnimum: 6.79 3.59 53200 35
Daily Minimum: 6.79 3.59 53200 35
••6o 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_NC0085553_Ver_1.0_8_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
I s
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
E .ifi
°o
I- 7 6
mE - m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
e a 41 y .. - -----
u -
6 8 8 Recorder Grab Grab Grab Grab Grab Grab Grab Grab
O 6 5
O Ce i2 O O ce
O ;. FLOW pH CHLORINE NH3-N-Cons DO TOTALN- TOTALP-Cone As-TOTAL CHLORIDE
2400 dock Hrs 2400 clock Hrs Y/B/N mgd su ug/1 mg/I mg/1 mg/I mg/I ug/I mg/I
1 6:10 10 N 0.061
2 6:10 10 Y 0.064
3 6:I0 10 Y 0.062
4 6:10 10 Y 0.061
5 6:10 10 Y 0.064
6 0.055
7 0.055
8 6:10 10 N 0.055
9 6:10 10 Y 0.037
to 9:10 6:10 10 Y 0.061 7.82 2.2 4.21 3.9 1.07 0.015 364
It 6:10 10 Y 0.061
12 6:10 10 Y 0.064
13 0.065
14 0.065
15 6:10 10 N 0.065
16 6:10 10 Y 0.065
17 6:10 10 Y 0.037
18 6:10 10 Y 0.041
19 6:10 10 Y 0.052
20 0.066
21 0.066
22 6:10 10 N 0.066
23 6:10 10 Y 0.063
24 6:10 10 Y 0.016
25 6:10 10 Y 0.066
26 6:10 10 Y 0.064
27 _ 0.065 7.59
28 0.065
29 6:10 10 N 0.065
30 6:10 10 Y 0.061
31 6:10 10 Y 0.066
Monthly Average Limit: 10
Monthly Avenge: 0.058677 2.2 4.21 3.9 1.07 0.015 364
Daily Maximum: 0.066 7.82 2.2 4.21 3.9 1.07 0.015 364
Doily Minimum: 0.016 7.59 2.2 4.21 3.9 1.07 0.015 364
....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_NC0085553_Ver_1.0_8_2022.pdf)

r
NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
E E -
P E I•% 'm 8
a u 7 O
T.
E Monthly Monthly Monthly Monthly Monthly Monthly
m E ` in
u - 2 o $ Grab Grab Grab Grab Grab Grab
12 E e U a
S U - O 8. O 7 CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 dock Hn 2400 clock Hn Y/B/N umhos/cm ugl1 ppt mg/I nlu ug/1
1 6:10 10 N
2 6:10 10 Y
3 6:10 10 Y
4 6:10 10 Y
5 6:10 10 Y
6
7
8 6:10 10 N
9 6:10 10 Y
10 9:10 6:10 10 Y 3090 <0.01 53.3 2090 4.2 <0.1
11 6:10 10 Y
12 6:10 10 Y
13
14
15 6:10 10 N
16 6:10 10 Y
17 6:10 10 Y
18 6:10 10 Y
19 6:10 10 Y
20
21
22 6:10 10 N
23 6:10 10 Y
20 6:10 10 Y
25 6:10 10 Y
26 6:10 10 Y
27
28
29 6:10 10 N
30 6:10 10 Y
31 6:10 10 Y
Monthly Average Limit: 3.7 85.6
Monthly Average: 3090 0 53.3 2090 4.2 0
Daily Maximum: 3090 0 53.3 2090 4.2 0
Daily Minimum: 3090 0 53.3 2090 4.2 0
•"•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_NC0085553_Ver_1.0_8_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00400
Monthly Monthly Monthly Monthly
° Grab Grab Grab Grab
E x
pH DO CNDUCTVY SALINITY
2400 loch su mg/I umhos/cm ppt
3
4
5
6
7
s
9
10 10:15 6.31 357 53000 34 7
1
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly lserage Limit
Monthly Average: 3.57 53000 34.7
Daily Maximum: 6.31 3.57 53000 34.7
Daily Minimum: 6.31 3.57 53000 34.7
'•■•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 NC0085553_Ver_1.0_8_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION: 1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE: 10/03/2022
Electronically Certified by Nathan James Lindsay on 2022-10-03 11:22:25.995
ORC/Certifier Signature :Nathan James Lindsay Phone # : [phone] 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 Joseph McCann on 2022-10-03 12:45:20.092
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:Environmental Chemists
CERTIFIED LAB#:94
PERSON(s)COLLECTING SAMPLES:Nathan Lindsay,Ian Carico,Jason Jacobs
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_NC0085553_Ver_1.0_8_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
n i. PH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
3
4
6
7
8
9
10
11
12 9:50 6.77 4.3 51900 34
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
2R
29
30
31
Monthly Avenge Limb:
Monthly Avenge: 4.3 51900 34
Daily Maximum: 6.77 4.3 51900 34
Daly Mlaluou. 6.77 4.3 51900 34
****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_NC0085553_Ver 2.0_7_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
P F E aty F :
E & i E
F a m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
A e
8 u 7.
t 0 8 Recorder Grab Grab Grab Grab Grab Grab Grab Grab
E a C o;
i
8 U i A.
O Z FLOW pH CHLORINE NH3-N-Cone DO TOTAL N- TOTALP-Cone As-TOTAL CHLORIDE
2400 clock Hrs 2400 clock Hr. Y/R/N mgd su ugh mg/I mg/I mg/I mg/I ug/1 mg/I
1 0610 10 Y 0.053
2 0.06
3 0.06
' 4 0.06
5 0610 10 Y 0.06
6 0610 10 Y 0.032
7 0610 10 Y 0.052
8 0610 10 Y 0.06
9 0.061
10 0.061
11 0610 10 N 0.061
12 8:40 0610 10 Y 0.06 7.47 4 3.34 5.9 2.22 <10 532
13 0610 10 Y 0.063
14 0610 10 Y 0.062
15 0610 10 Y 0.059
16 0.063
17 0.063
10 0610 10 N 0.063
19 0610 10 Y 0.063
20 0610 10 Y 0.063
21 0610 10 Y 0.063
22 0610 10 Y 0.036
23 0.058
24 0.058
25 0610 10 N 0.058
26 0610 10 Y 0.063
27 0610 10 Y 0.062
28 0610 10 Y 0.031
29 0610 10 Y 0.034 7.33
30 0.061
31 0.061
Monthly Avenge Limit: 10
Monthly Avenge: 0.056903 4 3.34 5.9 2.22 0 532
Daily Maximum: 0.063 7.47 4 3.34 5.9 2.22 0 532
Davy Minimum: 0.031 7.33 4 3.34 5.9 2.22 0 532
"•*•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 NC0085553_Ver_2.0_7_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 TGE3E 00480 70295 00070 01092
I
F E E lE I.A.
r : O a
y 8 t I
m Monthly Monthly Quarterly Monthly Monthly Monthly Monthly
e - 0 f
8. u' 8 a Grab Grab Grab Grab Grab Grab Grab
d E 7 ` ` u C
O U f- O O O 7 CNDUCTVY COPPER MYSD24PF SALINITY RES/DISS TURBIDTY ZINC
2400 dock Hn 2400 clack Hn Y/BIN umhos/cm ug/I pass/fail ppt mg/1 ntu up/1
1 0610 10 Y
2
3
4
5 0610 10 Y
6 0610 10 Y
7 0610 10 Y
8 0610 10 Y
9
10
11 0610 10 N
12 8:40 0610 10 Y 3480 10 P 1.8 2380 3.2 64
13 0610 10 Y
14 0610 10 Y
15 0610 10 Y
16
17
18 0610 10 N
19 0610 10 Y
20 0610 10 Y
21 0610 10 Y
22 0610 10 Y
23
24
25 0610 10 N
26 0610 10 Y
27 0610 10 Y
28 0610 10 Y
29 0610 10 Y
30
31
Monthly Avenge Limit: 3.7 85.6
Monthly Average: 3480 10 1.8 2380 3.2 64
- -- —,
Daily Maximum: 3480 10 1.8 2380 3.2 64
—_ - —_ Daily Minimum: 3480 10 1.8 2380 3.2 64
••••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_NC0085553_Ver_2.0_7_2022.pdf)

r -
NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
i Monthly Monthly Monthly Monthly
F f
Grab Grab Grab Grab
E
y j pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
1
2
3
4
5
6
7
8
9
10
11
12 9:50 6.33 3.69 49200 32
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Average: 3.69 49200 32
Deily Maximum: 6.33 3.69 49200 32
Daily Minimum: 6.33 3.69 49200 32
•"'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 NC0085553_Ver_2.0_7_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:08/31/2022
Electronically Certified by Nathan James Lindsay on 2022-08-26 11:18:27.893
ORC/Certifier Signature :Nathan James Lindsay Phone # : [phone] 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 Joseph McCann on 2022-08-31 08:09:15.657
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:Environmental Chemists
CERTIFIED LAB#:94
PERSON(s)COLLECTING SAMPLES:Nathan Lindsay,Ian Carico,Jason Jacobs
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 NC0085553_Ver_2.0_7_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick j
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:09-2022(September 2022) VERSION:1.0 STATUS:Validated:Warnings
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
'F =
$ Grab Grab Grab Grab
a
DO CNDUCTVY SALINITY
2400 dock so mg/I umhos/cm ppt
2
3
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
Monthly Avenge Limit:
Monthly Avenge:
Daily Maximum:
Daily Minimum:
""No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:09-2022(September 2022) VERSION:1.0 STATUS:Validated:Warnings
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:
/ /
ORC/Certifier Signature: E-Mail: Phone #: 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 thepermittee becomes aware of the circumstances.The written submission shall be made as required bypart II.E. of the
Y q6
NPDES permit.
/ /
Permittee/Submitter Signature: *** E-Mail: Phone #: Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:Nate Lindsey
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).

r
Attachment 5
Effluent & Intake Characteristics
(Tables A, B, C, & Analytical Results)

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE A.CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(iii))1
Effluent Intake
W (Optional)Waiver
Pollutant Requested Units Maximum Maximum Long-Term
(if applicable
te (specify) Daily Monthly Average Daily Number of Long-Term Number of
Discharge Discharge Discharge Analyses Average Value Analyses
(required) (if available) (if available)
❑ Check here if you have applied to your NPDES permitting authority for a waiver for all of the pollutants listed on this table for the noted outfall.
Biochemical oxygen demand Concentration N/A
1' ❑
(BOD5) Mass N/A
Chemical oxygen demand Concentration N/A
2. ❑
(COD) Mass N/A
Concentration N/A
3. Total organic carbon(TOC) 0
Mass N/A
Concentration N/A
4. Total suspended solids(TSS) ❑
Mass N/A
Concentration mg/L 4.0 12
5. Ammonia(as N) 0
Mass N/A
6. Flow 0 Rate MGD 0.10 365
Temperature(winter) ❑ °C °C N/A
7.
Temperature(summer) ❑ °C °C N/A
pH(minimum) 0 Standard units s.u. 6.72 12
8.
pH(maximum) ❑ Standard units s.u. 7.82 12
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e., methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 9

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Discharge Discharge Discharge Analyses Average Analyses
(required) (if available) Value
(if available)
❑ Check here if you qualify as a small business per the instructions to Form 2C and,therefore,do not need to submit quantitative data for any of the organic toxic pollutants in Sections
2 through 5 of this table. Note, however,that you must still indicate in the appropriate column of this table if you believe any of the pollutants listed are present in your discharge.
Section 1.Toxic Metals,Cyanide,and Total Phenols
1.1 Antimony, total ❑ Concentration N/A
lE1 El
(7440-36-0) Mass N/A
Arsenic,total0 Concentration ug/L 23 12
1.2 (7440-38-2) Mass N/A
1.3 Beryllium,total ❑ Concentration N/A
(7440-41-7) Mass N/A
1.4 Cadmium, total ❑ Concentration N/A
(7440-43-9) Mass N/A
1.5 Chromium,total Concentration N/A
(7440-47-3) Mass N/A
1.6 Copper,total Concentration ug/L 10 12
(7440-50-8) Mass N/A
1.7 Lead,total Concentration N/A
(7439-92-1) Mass N/A
1.8 Mercury,total Concentration N/A
(7439-97-6) Mass N/A
1.9 Nickel,total Concentration N/A
(7440-02-0) Mass N/A _
Selenium,total Concentration N/A
1.10 (7782 49 2) ❑ El El
Mass N/A
-
Silver,total Concentration N/A
1.11 El ❑ El(7440 22 4)
Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 11

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Daily Monthly Term
Present Absent ischarge Dail of of
Discharge
a (ifavailablle) Discharge Analyses AverageValue Analyses
(if available)
1.12 Thallium,total a Concentration N/A
(7440-28-0) Mass N/A
Zinc,total 0 Concentration ug/L 64 12
1.13 El 0
(7440-66-6) Mass N/A
1.14 Cyanide,total � 0 Concentration N/A
(57-12-5) Mass N/A
Concentration N/A
1.15 Phenols,total Mass N/A
Section 2.Organic Toxic Pollutants(GCIMS Fraction—Volatile Compounds)
2.1 Acrolein Li Concentration N/A
0 0
(107-02-8) Mass N/A
2.2 Acrylonitrile 0 Concentration N/A
(107-13-1) Mass N/A
2.3 Benzene 0 Concentration N/A
(71-43-2) _Mass N/A
2.4 Bromoform 0 Concentration N/A
(75-25-2) Mass N/A
2.5 Carbon tetrachloride 0 0 1:1 Concentration N/A
(56-23-5) Mass N/A
Chlorobenzene 0 Concentration N/A
2.6 (108 90 7)
Mass N/A
Chlorodibromomethane 0 Concentration N/A
2.7 (124-48-1) Mass N/A
2.8 Chloroethane El Concentration N/A
(75-00-3) Mass , N/A
EPA Form 3510-2C(Revised 3-19) Page 12

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Discharge Discharge Discharge Analyses Average Analyses
(required) (if available) Value
(if available)
2.9 2-chloroethylvinyl ether El El0Concentration N/A
(110-75-8) Mass N/A
2.10 Chloroform(67-66-3) El El ❑✓ Concentration N/A Mass N/A
2.11 Dichlorobromomethane ❑ ❑ ❑ Concentration N/A
(75-27-4) Mass N/A
212 11-dichloroethane El ❑ Concentration N/A
(75-34-3) Mass N/A
12-dichloroethane 0 Concentration N/A
2.13 (107-06-2) ❑ ❑
Mass N/A
2.14 1,1-dichloroethylene El ❑ ❑ Concentration N/A
(75-35-4) Mass N/A
2.15 12-dichloropropane El ❑ LiConcentration N/A
(78-87-5) Mass N/A
2.16 13-dichloropropylene El ❑ ❑ Concentration N/A
(542-75-6) Mass N/A
217 Ethylbenzene ❑ 0 ❑ Concentration N/A
(100-41-4) Mass N/A
Methyl bromide Concentration N/A
2.18 (74 83 9) ❑ El
Mass N/A
219 Methyl chloride El ❑ ❑ Concentration N/A
(74-87-3) Mass N/A
2.20 Methylene chloride ❑ ❑ ✓❑ Concentration N/A
(75-09-2) Mass N/A
2.21 1 1,2 2-tetrachloroethane El ❑ ❑ Concentration N/A
(79-34-5) Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 13

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent
(optional)
Pollutant]Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Term
Discharge Discharge Daily of Average of
(required) (if available) Discharge Analyses Value Analyses
(if available)
2.22 Tetrachloroethylene ❑ Concentration N/A
(127-18-4) Mass N/A
Toluene Concentration N/A
2.23 (108 88 3) El 0 El
Mass N/A
2.24 1,2-trans-dichloroethylene ❑ ❑ Concentration N/A
(156-60-5) Mass N/A
2.25 1,1,1-trichloroethane Concentration N/A
(71-55-6) Mass N/A
2.26 1 1,2-trichloroethane ❑ ❑ Concentration N/A
(79-00-5) Mass N/A
2.27 Trichloroethylene Concentration N/A
El El 0
(79-01-6) Mass N/A
2.28 Vinyl chloride 0 Concentration N/A
(75-01-4) Mass N/A
Section 3.Organic Toxic Pollutants(GCIMS Fraction—Acid Compounds)
3.1 2-chlorophenol Concentration N/A
(95-57-8) Mass N/A
3.2 2 4-dichlorophenol ElConcentration N/A
(120-83-2) Mass N/A
2,4-dimethylphenol Concentration N/A
3.3 0 El El
(105-67-9) Mass N/A _
3.4 4 6-dinitro-o-cresol El
N/A
0 El(534-52-1) Mass N/A
3.5 2,4-dinitrophenol Concentration N/A
(51-28-5) Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 14

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence
(check one) Effluent Intake
(optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Discharge Discharge Discharge Analyses Average Analyses
(required) (if available) Value
(if available)
3.6 2-nitrophenol ❑ Concentration N/A
0 El
(88-75-5) Mass N/A
3.7 4-nitrophenol ❑ Concentration N/A
(100-02-7) Mass N/A
3.8 p-chloro-m-cresol ❑ Concentration N/A
El 0
(59-50-7) Mass N/A
3.9 Pentachlorophenol ❑ ❑ Concentration N/A
(87-86-5) Mass N/A
Phenol Concentration N/A
3.10 (108-95-2) 0 0 0
Mass _ N/A
2,4,6-trichlorophenol Concentration N/A
3.11 (88 05 2) ❑ ❑ 0
Mass N/A
Section 4.Organic Toxic Pollutants(GC/MS Fraction-Base/Neutral Compounds)
4.1 Acenaphthene ❑ Concentration N/A
El 0
(83-32-9) Mass N/A
4.2 Acenaphthylene ❑ Concentration N/A
(208-96-8) Mass N/A
4.3 Anthracene ❑ Concentration N/A
0 0
(120-12-7) Mass N/A
4.4 Benzidine 0 Concentration N/A
0 0
(92-87-5) Mass N/A
Benzo(a)anthracene 0 Concentration N/A
4.5 (56-55-3) 0 0
Mass N/A
4.6 Benzo(a)pyrene 0 0 ❑ Concentration N/A
(50-32-8) Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 15

,
EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
PollutantlParameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Discharge Discharge Discharge Analyses Average Analyses
(required) (if available) Value
(if available)
4.7 3,4-benzofluoranthene ❑ Concentration N/A
El El(205-99-2) Mass N/A
4.8 Benzo(ghi)perylene 0 Concentration N/A
(191-24-2) Mass N/A
4.9 Benzo(k)fluoranthene ❑ Concentration N/A
(207-08-9) Mass N/A
4.10 Bis(2-chloroethoxy)methane ❑ ❑ ❑ Concentration N/A
(111-91-1) Mass N/A
Bis(2-chloroethyl)ether ci Concentration N/A
4.11 El 0
(111-44-4) Mass N/A
4.12 Bis(2-chloroisopropyl)ether 0 Concentration N/A
(102-80-1) Mass N/A
Bis(2-ethylhexyl)phthalate Concentration N/A
4.13 (117-81-7) ❑ ❑ ID
Mass N/A
4-bromophenyl phenyl ether ci Concentration N/A
4.14 (101-55-3) _Mass N/A
4.15 Butyl benzyl phthalate ❑ ❑ IDConcentration N/A
(85-68-7) Mass N/A
4.16 2-chloronaphthalene 0 Concentration N/A
El El
(91-58-7) Mass N/A
4-chlorophenyl phenyl ether Concentration N/A
4.17 (7005-72-3) Mass N/A
Chrysene ID Concentration N/A
4.18 (218-01-9) ❑ 0
Mass N/A
4.19 Dibenzo(a,h)anthracene 0 El ID Concentration N/A
(53-70-3) Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 16

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Term
Discharge Discharge Daily of Average of
(required) (if available) Dischar(ifavailable)ge Analyses Value Analyses
_
4.20 1,2-dichlorobenzene ❑ ❑ Concentration N/A
(95-50-1) Mass N/A '
4.21 13-dichlorobenzene ❑ ❑ El Concentration N/A
—
(541-73-1) Mass N/A
4.22 1 4-dichlorobenzene ❑ ❑ 0Concentration N/A
(106-46-7) Mass N/A
4.23 3 3-dichlorobenzidine ❑ ❑ O Concentration N/A
(91-94-1) Mass N/A
Diethyl phthalate Concentration N/A
4.24 (84-66-2) ❑ ❑
Mass N/A
4.25 Dimethyl phthalate ❑ ❑ ❑ Concentration N/A
(131-11-3) Mass N/A
4.26 Di-n-butyl phthalate ❑ ❑ © Concentration N/A
(84-74-2) Mass N/A
4.27 2,4-dinitrotoluene ❑ ❑ © Concentration N/A __
(121-14-2) Mass N/A
4.28 2 6-dinitrotoluene ❑ ❑ 0Concentration N/A
(606-20-2) Mass N/A
Di-n-octyl phthalate 0 Concentration N/A
4.29 El 0
(117-84-0) Mass N/A
1,2-Diphenylhydrazine Concentration N/A
4.30 (as azobenzene)(122-66-7) Mass N/A
Fluoranthene Concentration N/A
4.31 (206-44-0) ❑ 0 ❑ Mass N/A
4.32 Fluorene ❑ ❑ Concentration N/A
(86-73-7) Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 17
i

EPA Identification Number NPDES Permit Number Facility Name Duffel'Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No 2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent
(optional)
Pollutant]Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Discharge Discharge Average
(required) (if available) Discharge Analyses Value Analyses
(if available)
Hexachlorobenzene Concentration N/A
4.33 (118 74 1) ❑ 0 ❑�
Mass N/A
-
4.34 Hexachlorobutadiene Concentration N/A
(87-68-3) Mass N/A
4.35 Hexachlorocyclopentadiene 0 0 Concentration N/A
(77-47-4) Mass N/A
Hexachloroethane Concentration N/A
4.36 ❑ D 0(67 72 1)
Mass N/A
Indeno(1,2,3-cd)pyrene Concentration N/A
4.37 (193-39-5) 0 0 ❑✓
Mass N/A
4.38 Isophorone ❑ ❑ Concentration N/A
(78-59-1) Mass N/A
Naphthalene Concentration N/A
4.39 (91-20-3) � ❑ El
Mass N/A
4.40 Nitrobenzene Concentration N/A
El 0 El
(98-95-3) Mass N/A
4.41 N-nitrosodimethylamine El 0 Concentration N/A
(62-75-9) Mass N/A
4.42 N-nitrosodi-n-propylamine 0 Concentration N/A
(621-64-7) Mass N/A
N-nitrosodiphenylamine Concentration N/A
4.43 (86-30-6) � 0 0
Mass N/A
4.44 Phenanthrene Concentration N/A
(85-01-8) Mass N/A
P rene Concentration N/A
YEl 0 El
4.45 (129-00-0) Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 18

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Term
of of
Discharge Discharge DisDcharge Analyses Average Analyses
(required) (if available) (if available) Value
4.46 1,2 4-trichlorobenzene El ❑ ❑ Concentration N/A
(120-82-1) Mass N/A _
Section 5.Organic Toxic Pollutants(GCIMS Fraction—Pesticides)
5.1 Aldrin El ❑ ❑ Concentration N/A
(309-00-2) Mass N/A
a-BHC 0Concentration N/A
5.2 El El
(319-84-6) Mass N/A
R-BHC El Concentration N/A _
5.3 (319-85-7) El ❑ Mass N/A
y-BHC Concentration N/A
5.4 (58 89 9) El ❑ 0
Mass N/A
b-BHC 0 Concentration N/A
5.5 (319-86-8) ❑ ❑ Mass N/A
5.6 Chlordane El ❑ ❑ Concentration N/A
(57-74-9) Mass N/A
5.7 4,4'-DDT ❑ ❑ ❑ Concentration N/A
(50-29-3) _Mass N/A _
5.8 4 4'-DDE El ❑ ❑ Concentration N/A
(72-55-9) Mass N/A _
4,4'-DDD Concentration N/A
5.9 (72 54 8) El ❑ El
Mass N/A
5.10 Dieldrin ❑ El ID Concentration N/A
(60-57-1) Mass N/A
5.11 a-endosulfan El ❑ ❑ Concentration N/A
(115-29-7) Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 19

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05119
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence
(check one) Effluent Intake
(optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Discharge Discharge Average
(required) (if available) Dischar(ifavailable)ge Analyses Value Analyses
R-endosulfan Concentration N/A
5.12 (115-29-7) ❑ 0 -
Mass N/A
Endosulfan sulfate Concentration N/A
5.13 (1031 07 8) El 0 0
Mass N/A
5.14 Endrin Concentration N/A
(72-20-8) Mass _ N/A
5.15 Endrin aldehyde Concentration N/A
El El El
(7421-93-4) Mass N/A
Heptachlor Concentration N/A
5.16 (76-44-8) 0 0 0
Mass N/A
Heptachlor epoxide Concentration N/A
5.17 (1024-57-3) 0 0 ❑ Mass N/A
PCB-1242 Concentration N/A
5.18 (53469-21-9) 0 0 0 Mass N/A
PCB-1254 Concentration N/A
5.19 (11097-69-1) 0 0 0
Mass N/A
PCB-1221 Concentration N/A
5.20 (11104-28-2) 0 0 ❑ Mass N/A
PCB-1232 Concentration N/A
5.21 (11141-16-5) 0 El 0 Mass N/A
PCB-1248 Concentration N/A
5.22 (12672-29-6) 0 0 ElMass N/A
PCB-1260 Concentration N/A
5.23 (11096-82-5) ❑ 0 ❑ Mass N/A
PCB-1016 Concentration N/A
5.24 (12674-11-2) 0 ❑ 0 Mass N/A
EPA Form 3510-2C(Revised 3-19) Page 20

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE B.TOXIC METALS,CYANIDE,TOTAL PHENOLS,AND ORGANIC TOXIC POLLUTANTS(40 CFR 122.21(g)(7)(v))1
Presence or Absence Intake
(check one) Effluent (optional)
Pollutant/Parameter Testing Units Long-Term
(and CAS Number,if available) Required Believed Believed (specify) Maximum Maximum Average Number Long- Number
Present Absent Daily Monthly Daily of Term of
Discha req i ed a (if ava labile) Discharge Analyses AValuee Analyses
( ) ( (if available)
Toxaphene Concentration N/A
5.25 (8001-35-2) 0
Mass N/A
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e., methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 21

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE C.CERTAIN CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(vi))1
Presence or Absence Intake
(check one) Effluent (Optional)
Units
Pollutant Maximum Long-Term
Believed Believed (specify) Maximum Daily Long-Term
Present Absent Discharge Monthly Average Daily Number of Average Number of
Discharge Discharge Analyses Analyses
(required) Value
(if available) (if available)
❑ Check here if you believe all pollutants on Table C to be present in your discharge from the noted outfall.You need not complete the"Presence or Absence"column of Table C for
each pollutant.
1-1 Check here if you believe all pollutants on Table C to be absent in your discharge from the noted outfall.You need not complete the"Presence or Absence"column of Table C for
each pollutant.
1 Bromide ❑ ❑ Concentration
(24959-67-9) Mass
Chlorine,total Concentration
2. El El
residual
Mass
3. Color 0 Concentration
Mass
4. Fecal coliform 0 El
Concentration
Mass
5 Fluoride ❑ ❑ Concentration
(16984-48-8)
Mass
Concentration
6 Nitrate-nitrite ❑ 0 Mass
7 Nitrogen,total ❑ ❑ Concentration mg/L5.9 - - 12 - -
organic(as N) Mass
Concentration
8. Oil and grease ❑ 0 Mass
9 Phosphorus(as 0 ❑ Concentration mg/L 10.10 - - 12 - -
P),total(7723-14-0) Mass
10. Sulfate(as SO4) ❑ 0 Concentration
(14808-79-8) Mass
11. Sulfide(as S) El 0 Concentration
Mass
EPA Form 3510-2C(Revised 3-19) Page 23

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE C.CERTAIN CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(vi))1
Presence or Absence Intake
(check one) Effluent (Optional)
Pollutant Units Maximum Long-Term
Believed Believed (specify) Maximum Daily Long-Term
Present Absent Discharge Monthly Average Daily Number of Average Number of
Discharge Discharge Analyses Analyses
(required) Value
(if available) (if available)
12. Sulfite(as SO3) ❑ ❑✓ Concentration _
(14265-45-3) Mass
13. Surfactants 0 El
Concentration
Mass
14. Aluminum,total ❑ ✓ Concentration
(7429-90-5)
Mass
15. Barium,total ❑ ❑ Concentration
(7440-39-3) Mass
16. Boron,totalEl ❑ Concentration
(7440-42-8)
Mass _ _
17 Cobalt,total Concentration
(7440-48-4) Mass
18 Iron,total ❑ ❑ Concentration
(7439-89-6) Mass
19 Magnesium,total 0 ❑✓ Concentration
(7439-95-4) Mass
Molybdenum, Concentration _
20. total ❑ 0Mass
(7439 98 7) .
21. Manganese,total ❑ ✓❑ Concentration
(7439-96-5) Mass
22. Tin,total ❑ ❑ Concentration
(7440-31-5) Mass
23. Titanium,total 0 ❑✓ Concentration
(7440-32-6) Mass
EPA Form 3510-2C(Revised 3-19) Page 24

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE C.CERTAIN CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS(40 CFR 122.21(g)(7)(vi))1
Presence or Absence Intake
(check one) Effluent (Optional)
Pollutant Units Maximum Long-Term
Believed Believed (specify) Maximum Daily Long-Term
Present Absent Discharge Monthly Average Daily Number of Average Number of
Discharge Discharge Analyses Analyses
(required) Value
(if available) (if available)
24. Radioactivity
Alpha,total ❑ El
Mass
Beta,total ❑ El
Mass
Radium,total ElConcentration
El
Mass
Concentration
Radium 226,total ❑ ❑✓ Mass
1 Sampling shall be conducted according to sufficiently sensitive test procedures(i.e., methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I,subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 25

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 12221(g)(7)(vii))1
Presence or Absence
Pollutant (check one) Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
1. Asbestos ❑ ❑✓
2. Acetaldehyde ❑ ❑✓
3. Allyl alcohol ❑ ❑✓
4. Allyl chloride ❑ ❑✓
5. Amyl acetate ❑ ❑✓
6. Aniline ❑ ❑✓
7. Benzonitrile ❑ ❑✓
8. Benzyl chloride 0 ❑✓
9. Butyl acetate ❑ ❑✓
10. Butylamine ❑ ❑✓
11. Captan 0 ❑✓
12. Carbaryl 0 ❑✓
13. Carbofuran 0 ❑✓
14. Carbon disulfide ❑ El
15. Chlorpyrifos 0 ❑✓
16. Coumaphos 0 ❑✓
17. Cresol 0 ❑✓
18. Crotonaldehyde 0 ❑✓
19. Cyclohexane ❑ ❑✓
EPA Form 3510-2C(Revised 3-19) Page 27

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No 2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 12221(g)(7)(vii))l
Presence or Absence
Pollutant (check one) Reason Pollutant Believed Present in Discharge Available Quantitative Data
Believed Believed (specify units)
Present Absent
20. 2,4-D(2,4-dichlorophenoxyacetic acid) ❑ ❑✓
21. Diazinon 0 ✓❑
22. Dicamba 0 ❑✓
23. Dichlobenil 0 0
24. Dichlone 0 ❑✓
25. 2,2-dichloropropionic acid 0 ❑✓
26. Dichlorvos 0 ❑✓
27. Diethyl amine ❑ ❑✓
28. Dimethyl amine 0 ❑✓
29. Dintrobenzene 0 ❑✓
30. Diquat 0 ✓❑
31. Disulfoton 0 ❑✓
32. Diuron 0 ❑✓
33. Epichlorohydrin ❑ ❑✓
34. Ethion 0 ❑✓
35. Ethylene diamine 0 ❑✓
36. Ethylene dibromide 0 ❑✓
37. Formaldehyde 0 ❑✓
38. Furfural ❑ 0
EPA Form 3510-2C(Revised 3-19) Page 28

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 12221(g)(7)(vii))1
Presence or Absence
Pollutant (check one) Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
39. Guthion ❑ ✓❑
40. Isoprene ❑ ✓❑
41. Isopropanolamine ❑ ❑✓
42. Kelthane ❑ ❑✓
43. Kepone ❑ ❑�
44. Malathion ❑ ❑✓
45. Mercaptodimethur 0 ✓❑
46. Methoxychlor 0 ✓❑
47. Methyl mercaptan ❑ ❑✓
48. Methyl methacrylate 0 ❑✓
49. Methyl parathion ❑ ❑✓
50. Mevinphos 0 ✓❑
51. Mexacarbate 0 ❑✓
52. Monoethyl amine ❑ ❑✓
53. Monomethyl amine 0 ❑✓
54. Naled 0 ❑✓
55. Naphthenic acid ❑ ❑✓
56. Nitrotoluene 0 ✓❑
57. Parathion ❑ ✓❑
EPA Form 3510-2C(Revised 3-19) Page 29

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 12221(g)(7)(vii))1
Presence or Absence
Pollutant (check one) Reason Pollutant Believed Present in Discharge Available Quantitative Data
Believed Believed (specify units)
Present Absent
58. Phenolsulfonate 0 ✓❑
59. Phosgene 0 ❑✓
60. Propargite ❑ ❑✓
61. Propylene oxide 0 ❑✓
62. Pyrethrins 0 ❑✓
63. Quinoline 0 ❑✓
64. Resorcinol 0 ❑✓
65. Strontium 0 ❑✓
66. Strychnine 0 ❑✓
67. Styrene 0 ❑✓
68. 2,4 5-T(2,4,5-trichlorophenoxyacetic ❑ ❑✓
acid)
69. TDE(tetrachlorodiphenyl ethane) 0 ❑✓
70. 2,4,5-TP[2-(2,4,5-trichlorophenoxy) ❑ ❑
propanoic acid]
71. Trichlorofon 0 ❑✓
1 72. Triethanolamine ❑ ❑✓
73. Triethylamine ❑ ❑✓
74. Trimethylamine 0 ❑✓
75. Uranium ❑ ❑✓
76. Vanadium ❑ ❑✓
EPA Form 3510-2C(Revised 3-19) Page 30

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE D.CERTAIN HAZARDOUS SUBSTANCES AND ASBESTOS(40 CFR 12221(g)(7)(vii))1
Presence or Absence
Pollutant (check one) Available Quantitative Data
Believed Believed Reason Pollutant Believed Present in Discharge (specify units)
Present Absent
77. Vinyl acetate ❑ ✓❑
78. Xylene ❑ ❑✓
79. Xylenol ❑ ✓❑
80. Zirconium 0 ❑✓
Sampling shall be conducted according to sufficiently sensitive test procedures(i.e., methods)approved under 40 CFR 136 for the analysis of pollutants or pollutant parameters or
required under 40 CFR chapter I, subchapter N or 0. See instructions and 40 CFR 122.21(e)(3).
EPA Form 3510-2C(Revised 3-19) Page 31

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
110012850192 Village of Bald Head Island OMB No.2040-0004
TABLE E.2,3,7,8 TETRACHLORODIBENZO P DIOXIN(2,3,7,8 TCDD)(40 CFR 122.21(g)(7)(viii))
TCDD Presence or
Congeners Absence
Pollutant Used or (check one) Results of Screening Procedure
Manufactured Believed Believed
Present Absent
2,3,7,8-TCDD 0 0 ❑✓
EPA Form 3510-2C(Revised 3-19) Page 33

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 10-2021 (October 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
E e Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
7 pH DO CNDCCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
3
4
5
6 8:05 6.44 6.61 51100 33.3
7
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: 6.61 51100 33.3
Daily Maximum: 6.44 6.61 51100 33.3
Daily Minimum: 6.44 6.61 51100 33.3
••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 NC0085553_Ver_1.0_10_2021.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 10-2021(October 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
h E E rn F F
7 O
yE m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
e C F is
Li111 O Recorder Grab Grab Grab Grab Grab Grab Grab Grab
2: o d 8 c aG V [2 O 8' o 7 FLOW pH CHLORINE NH3-N-Cone DO TOTAL N- TOTAL P-Cone As-TOTAL CHLORIDE
2400 clock Hrs 2400 clock Hrs Y/Rry mgd su ug/I mg/I mg/I mg/I mg/I ug/I mg/I
1 6:10 10 0.055
2 0.064
3 0.064
4 7:10 8 0.064
5 6:10 10 0.045
6 8:30 6:10 10 0.054 7.7 3.1 6.71 4.2 I 23 516
7 6:10 10 0.01
8 6:10 10 0.04
9 0.068
10 0.068
11 7:10 8 0.068
12 6:10 10 0.036
13 6:10 10 0.05
14 6:10 10 0.07
15 7:10 8 0.042
16 0.059
17 0.059
18 7:10 8 0.059
19 7:10 8 0.054 7.2
20 6:10 10 0.043
21 7:10 8 0.064
22 7:10 8 0.054
23 0.072
24 0.072
25 7:10 8 0.072
26 7:10 8 0.051
27 7:10 8 0.041
28 7:10 8 0.049
29 7:10 8 0.058
30 0.058
31 0.058
Monthly Average Limit: 10
Monthly Average:
0.055516 3.1 6.71 4.2 1 23 516
Daily Maximum:
0.072 7.7 3.1 6.71 4.2 1 23 516
Daily Minimum:
0.01 7.2 3.1 6.71 4.2 1 23 516
•"'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_NC0085553_Ver_1.0_10_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 10-2021(October 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 TGE3E 00480 70295 00070 01092 1.
E 8
F 8 = a
3 F 1- 0
e <
s E t m Monthly Monthly Quarterly Monthly Monthly Monthly Monthly
u G 8 a & Grab Grab Grab Grab Grab Grab Grab
e e u a
S u F g O O z CNDUCTVY COPPER MYSD24PF SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hn 2400 clock Hn Y/B/N umhos/cm ug/l pass/fail ppt mg/I ntu ug/I
I 6:10 10
2
3
4 7:10 8
5 6:10 10
6 8:30 6:10 10 3180 <10 P 1.7 2090 9.9 <10
7 6:10 10
8 6:10 10
9
10
II 7:10 8
12 6:10 10
13 6:10 10
14 6:10 10
15 7:10 8
16
17
18 7:10 8
19 7:10 8
20 6:10 10
21 7:10 8
22 7:10 8
-
23
24
25 7:10 8
26 7:10 8
27 7:10 8
28 7:10 8
29 7:10 8
30
31
Monthly Average Limit: 3.7 85.6
Monthly Average: 3180 0 1.7 2090 9.9 0
Daily Maximum: 3180 0 1.7 2090 9.9 0
Daily Minimum: 3180 0 1.7 2090 9.9 0
•'•a 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_NC0085553_Ver_1.0_10_2021.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 10-2021 (October2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
a"
E e Monthly Monthly Monthly Monthly
F t
g Grab Grab Grab Grab
m
S ti z pH DO CNDUCIVY SALINITY
2400 clock su mg/1 umhos/cm ppt
1
2
3
4
5
6 8:10 6.71 8.21 51700 33.9
7
8
9
10
1
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: 8.21 51700 33.9
Daily Maximum: 6.71 8.21 51700 33.9
Daily Minimum: 6.71 8.21 51700 33.9
••••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_NC0085553_Ver_1.0_10_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:10-2021 (October 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Non-Compliant CONTACT PHONE#:[phone] SUBMISSION DATE: 11/29/2021
Electronically Certified by David Albert Suther on 2021-11-22 13:36:28.526
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2021-11-29 09:46:46.722
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver_1.0_10_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:10-2021 (October 2021) VERSION:1.0 STATUS:Submitted
Report Comments:
Arsenic Exceeded for Dailey Max and Monthly Average.

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:11-2021(November 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
aC
Monthly Monthly Monthly Monthly
= f
Grab Grab Grab Grab
a
d h G 7 pH DO CyDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
1
2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 8:05 6.97 12.34 53600 35.3
25
26
27
28
29
30
Monthly Avenge Limit:
Monthly Average: 12.34 53600 35.3
Daily Muimum: 6.97 12.34 53600 35.3
Daily Minimum: 6.97 12.34 53600 35.3
****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_NC0085553_Ver_1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 11-2021(November 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
F E. E '
u 0 1^ y o
O
he a iE _ 't Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
u O d Recorder Grab Grab Grab Grab Grab Grab Grab Grab
E E e 8 u m
S U i2 O O ceJ 7 FLOW pH CHLORINE NH3-N-Cone DO TOTALN- TOTALP-Cone As-TOTAL CHLORIDE
2400 clock Hid 2400 clock Hrs Y/B/N mgd su ug/1 mg/I mg/I mg/I mg/I ug/1 mg/I
1 7:10 8 Y 0.048
2 6:10 10 Y 0.047
3 6:10 10 Y 0.047
4 6:10 10 Y 0.055
5 6:10 10 Y 0.054
6 0.055
7 0.055
8 7:10 8 Y 0.055
9 7:10 8 Y 0.052
10 6:10 10 Y 0.033
It 6:10 10 Y 0.031
12 6:10 10 N 0.031
13 0.088
14 0.088
15 7:10 8 Y 0.088
16 7:10 8 Y 0.053
17 7:10 8 Y 0.051
18 6:10 10 Y 0.04
19 6:10 10 Y 0.055
20 0.064
21 0.064
22 7:10 8 Y 0.064
23 6:10 10 Y 0.054
24 7:20 6:10 10 Y 0.053 7.5 1.9 5.31 <10 358
25 0.059
26 0.059
27 0.059
28 0.059
29 7:10 8 Y 0.059
J0 7:10 8 Y 0.055 7.2
Monthly Average Limit: 10
Monthly Average:
0.055833 1.9 5.31 0 358
Daily Maximum:
0.088 7.5 1.9 5.31 0 358
Daily Minimum:
0.031 7.2 1.9 5.31 0 358
"'•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_NC0085553_Ver_1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 11-2021(November 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
I
it
r.. i F in
F _ O w
E s' _"E m f Monthly Monthly Monthly Monthly Monthly Monthly
a. a
5 U
I. Grab Grab Grab Grab Grab Grab
d E 8
o' U 2 O O O Z CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 dock Hrs Y/B/N umhos/cm ug/I ppl mg/I nlu ug/I
I 7:10 8 Y
2 6:10 10 Y
3 6:10 10 Y
4 6:10 10 Y
5 6:10 10 Y
6
7
8 7:10 8 Y
9 7:10 8 Y
10 6:10 10 Y
11 6:10 10 Y
12 6:10 10 N
13
14
15 7:10 8 Y
16 7:10 8 Y
17 7:10 8 Y
18 6:10 10 Y
19 6:10 10 Y
20
21
22 7:10 8 Y
23 6:10 10 Y
24 7:20 6:10 10 Y 2890 <10 1.5 1860 2.2 0.02
25
26
27
28
29 7:10 8 Y
30 7:10 8 Y
Monthly Average Limit: 3.7 85.6
Monthly Average: 2890 0 1.5 1860 2.2 0.02
Daily Maximum: 2890 0 1.5 1860 2.2 0.02
Dilly Minimum: 2890 0 1.5 1860 2.2 0.02
****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_NC0085553_Ver 1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 11-2021 (November2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
a
Monthly Monthly Monthly Monthly
F f
Grab Grab Grab Grab
a
p' z pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24 8:00 6.8 10.58 52700 34.7
25
26
27
28
29
30
Monthly Average Limit:
Monthly Average:
10.58 52700 34.7
Daily Maximum:
6.8 10.58 52700 _34.7
Daily Minimum:
6.8 10.58 52700 34.7
****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_NC0085553_Ver_1.0_11_2021.pd0

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 11-2021(November 2021) VERSION: 1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:01/01/2022
Electronically Certified by David Albert Suther on 2021-12-28 13:07:06.825
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-01-01 01:27:52.078
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver_1.0_11_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 12-2021(December 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
E e Monthly Monthly Monthly Monthly
'F t
Grab Grab Grab Grab
pa 7 pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
3
4
5
6
7
8
9
10
11
12
13
14
15 9:05 6.8 18.5 51900 34
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Avenge: 18.5 51900 34
Daily Maximum: 6.8 18.5 51900 34
Daily Minimum: 6.8 18.5 51900 34
....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_NC0085553_Ver 1.0_12_2021.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 12-2021(December 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
e
F E E in $
E s O "
'� E m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
6 G E- - E
u' i i O S Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a e E n s u AC u F" O O O z' FLOW pH CHLORINE NH3-N-Cone DO TOTAL N- TOTAL P-Cone As-TOTAL CHLORIDE
2400 clock Hrs 2400 clock Hrs Y/BIN mgd su ug/I mg/I mg/I mg/1 mg/I ug/I mg/I
1 6:10 10 B 0.039
2 6:10 10 B 0.046
3 6:10 10 B 0.034
4 0.044
5 0.044
6 7:10 8 Y 0.044
7 6:10 10 B 0.031
8 6:10 10 B 0.038
9 7:10 9 N 0.037
10 7:10 9 B 0.062
11 0.037
12 0.037
13 9:40 3 N 0.037
14 7:10 9 N 0.034
IS 8:40 7:10 9 N 0.04 7.2 2 10.7 <10 232
16 6:10 10 N 0.036
17 7:10 9 N 0.04
18 0.052
19 0.052
20 9:14 3 N 0.052
21 7:10 9 N 0.039
22 7:10 9 N 0.037
23 0.036
24 0.036
25 0.036
26 0.036
27 0.036
28 7:10 8 Y 0.036 7.3
29 7:10 8 Y 0.059
30 7:10 8 Y 0.07
31 0.06
Monthly Avenge Limit: 10
Monthly Avenge: 0.042484 2 10.7 0 232
Daily Monimam: 0.07 7.3 2 10.7 0 232
Daily Minimum: 0.031 7.2 2 10.7 0 232
"••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_NC0085553_Ver 1.0_12_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 12-2021 (December 2021) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
E
F E .1A. P 7
E E m Monthly Monthly Monthly Monthly Monthly Monthly
e a y E
n u' O u. Grab Grab Grab Grab Grab Grab
t.
C U f—' O O O 7 CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 clock Hrs Y/B/N umhos/cm ug/1 ppt mg/1 ntu ug/1
1 6:10 10 B
2 6:10 10 B
3 6:10 10 B
4
5
6 7:10 8 Y
7 6:10 10 B
8 6:10 10 B
9 7:10 9 N
ID 7:10 9 B
II
12
13 9:40 3 N
14 7:10 9 N
15 8:40 7:10 9 N 2410 <10 1.2 1560 0.8 <10
16 6:10 10 N
17 7:10 9 N
18
19
20 9:14 3 N
21 7:10 9 N
22 7:10 9 N
23
24
25
26
27
28 7:10 8 Y
29 7:10 8 Y
30 7:10 8 Y
31
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 2410 0 1.2 1560 0.8 0
Daily Masimom: 2410 0 1.2 1560 0.8 0
Daily Minimum: 2410 0 1.2 1560 0.8 0
••••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_NC0085553_Ver_1.0_12_2021.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD: 12-2021(December 2021) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
re
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
p' 7 pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
2
l
4
5
6
7
8
9
10
II
12
13
14
15 9:00 6.7 18.4 53400 35
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Avenge: 18.4 53400 35
Daily Maximum: 6.7 18.4 53400 35
Daily Minimum: 6.7 18.4 53400 35
••"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_NC0085553_Ver_1.0_12_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:12-2021(December 2021) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:01/27/2022
Electronically Certified by David Albert Suther on 2022-01-26 10:51:51.406
ORC/Certifier Signature :David Albert Suther Phone # : 910-457 - 7352 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 Joseph McCann on 2022-01-27 10:47:45.923
Permittee/Submitter P
Signature: ** *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver_1.0_12_2021.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
144
E Monthly Monthly Monthly Monthly
_ 8 Grab Grab Grab Grab
h
aj p11 DO CNDUCTVY SALINITY
2400 dock su mg/1 umhos/cm ppt
1
2
3
4
5
6
7
8
9
10
11
12 9:05 6.9 5.5 41900 26.8
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 5.5 41900 26.8
Daily Maximum: 6.9 5.5 41900 26.8
Daily Minimum: 6.9 5.5 41900 26.8
"••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 NC0085553_Ver_1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
•
6 E- [— O « a"a,
m ,I, E Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E < irv. 7t C
efts a O & Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a E a 8 8 Uc' ct
S U 2 O O O ,'. FLOW pH CHLORINE NH3-N-Cone DO TOTALN- TOTALP-Cane As-TOTAL CHLORIDE
2400 clock Hrs 2400 clock Hrs Y/B/N mgd su ug/I mg/I mg/1 mg/1 mg/1 ug/I mg/I
1 0.06
2 0.06
3 7:10 8 B 0.06
4 7:10 10 B 0.05
5 7:10 10 B 0.055
6 6:10 10 B 0.042
7 7:10 10 B 0.043
8 0.044
9 0.044
10 7:10 8 B 0.044
11 6:10 10 N 0.04
12 8:20 6:10 10 B 0.027 7.4 <0.2 8.5 3.8 0.91 <10 363
13 6:10 10 N 0.03
14 6:10 10 N 0.03
15 0.039
16 0.039
17 N 0.039
18 7:10 8 N 0.039
' 19 6:10 10 N 0.034
20 6:10 10 N 0.025
21 N 0.037
22 0.037
23 0.037
24 7:10 8 B 0.037
25 6:10 10 B 0.032
26 6:10 10 B 0.042 7.1
27 6:10 10 B 0.032
28 6:10 10 B 0.032
29 0.029
30 0.029
31 7:10 8 B 0.029
Monthly Average Limit: 10
Monthly Average: 0.039258 0 8.5 3.8 0.91 0 363
Daily Maximum: 0.06 7.4 0 8.5 3.8 0.91 0 363
Daily Minimum: 0.025 7.1 0 8.5 3.8 0.91 0 363
*0*0 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_NC0085553_Ver_1.0_1_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
• 00094 01042 TGE3E 00480 70295 00070 01092
E
F 6 F a 9
I r a 8 '
y z 1 m Monthly Monthly Quarterly Monthly Monthly Monthly Monthly
8 < F n E
8 u' 8 g Grab Grab Grab Grab Grab Grab Grab
e n C.) z" — -
a U 2 8� 8' O 7 CNDUCTVY COPPER MYSD24PF SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hn 2400 dock Hn Y/B/N umhos/cm ug/I pass/fail ppt mg/1 ntu ug/I
1
2
3 7:10 8 B
4 7:10 10 B P
5 7:10 10 B
6 6:10 10 B
7 7:10 10 B
8
9
10 7:10 8 B
11 6:10 10 N
12 8:20 6:10 10 B 2720 <10 1.4 1800 7.4 <10
13 6:10 10 N
14 6:10 10 N
15
16
17 N
18 7:10 8 N
19 6:10 10 N
20 6:10 10 N
21 N
22
23
24 7:10 8 B
25 6:10 10 B
26 6:10 10 B
27 6:10 10 B
28 6:10 10 B
29
30
31 7:10 8 B
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 2720 0 1.4 1800 7.4 0
Drily Mnimum: 2720 0 1.4 1800 7.4 0
Daily Minimum: 2720 0 1.4 1800 7.4 0
•••*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_NC0085553_Ver_1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
U0400 00300 00094 00400
S
C
Monthly Monthly Monthly Monthly
F t
Grab Grab Grab Grab
pll DO CNDUCTVY SALINITY
2400 clock su mg'I umhos/cm ppt
3
5
6
7
9
ID
12 9 00 6.9 9.2 40700 25
13
14
15
16
17
Itt
19
2U
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Average: 9.2 40700 25
Daily Maximum: 6.9 9.2 40700 25
Daily Minimum: 6.9 9.2 40700 25
••••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 NC0085553_Ver_1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:01-2022(January 2022) VERSION: 1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:02/25/2022
Electronically Certified by David Albert Suther on 2022-02-23 13:38:55.876
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-02-25 11:24:55.366
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver 1.0_1_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) 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 clock au mg/I umhos/cm ppt
3
4
5
6
7
8
9
10 9:00 6.5 13_8 47100 30.6
I
12
13
14
15
16
17
18
14
20
21
22
23
24
25
26
27
28
Monthly Average lima:
Monthly Average: 13.8 47100 30.6
Daily Maximum: 6.5 13.8 47100 30.6
Daily Minimum: 6.5 13.8 47100 30.6
****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_NC0085553_Ver_1.0_2_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
E F ald P. _ O
y ' E. Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly .
IE .. F f
u' 8 . Recorder Grab Grab Grab Grab Grab Grab Grab Grab
e e t z H
1U F O & O z' FLOW pH CHLORINE NH3-N-Conc DO TOTAL N- TOTAL P-Conc As-TOTAL CHLORIDE
2400 clock Hrs 2400 clock Hrs Y/R/N mgd su ug/I mg/I mg/I mg/I mg/I ug/1 mg/1
1 8:10 8 B 0.035
2 6:10 10 B 0.033
3 6:10 10 B 0.026
4 7:10 8 Y 0.036
5 0.034
6 0.034
7 7:10 8 Y 0.034
0 6:10 10 B 0.032
9 6:10 10 B 0.038
10 9:20 6:10 10 B 0.026 6.9 2.6 13.8 <10 500
11 6:10 10 B 0.032
12 0.021
13 0.021
14 7:10 8 Y 0.021
15 6:10 10 B 0.034
16 6:10 10 0.034
17 6:10 10 B 0.045
10 7:10 8 Y 0.051
19 0.045
20 0.045
21 7:10 8 Y 0.045
22 6:10 10 B 0.049
23 6:10 10 B 0.039 7.6
24 7:10 8 Y 0.043
25 0.048
26 0.047
27 0.047
20 9:40 6.5 N 0.047 1
Monthly Average Limit: 10
Monthly Avenge: 0.037214 2.6 13.8 0 500
Daily Maximum: 0.051 7.6 2.6 13.8 0 500
Daily Minimum: 0.021 6.9 2.6 13.8 0 500
""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_NC0085553_Ver_1.0_2_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
E E
F F 71 S
51 • a O
y • '. E el. m Monthly Monthly Monthly Monthly Monthly Monthly
E F h C
8 u o a Grab Grab Grab Grab Grab Grab
u E ` E U C
O U t% O O O z' CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 dock Hrs 2400 clock Hrs Y/B/N umhos/cm ugh ppt mg/I ntu ug/I
1 8:10 8 B
2 6:10 10 B
3 6:10 10 B
4 7:10 8 Y
5
6
7 7:10 8 Y
8 6:10 10 B
9 6:10 10 B
10 9:20 6:10 10 B 3460 <10 1.8 2220 0.7 20
II 6:10 10 B
12
13
14 7:10 8 Y
15 6:10 10 B
16 6:10 10
17 6:10 10 B
18 7:10 8 Y
19
20
21 7:10 8 Y
22 6:10 10 B
23 6:10 10 B
24 7:10 8 Y
25
26
27
28 9:40 6.5 N
Monthly Average Limit: 3.7 85.6
Monthly Average: 3460 0 1.8 2220 0.7 20
Daily Maximum: 3460 0 1.8 2220 0.7 20
Daily Minimum: 3460 0 1.8 2220 0.7 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_NC0085553_Ver_1.0_2_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
a
5 is t Monthly Monthly Monthly Monthly
' Grab Grab Grab Grab
E o
7 pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
1
2
3
4
5
6
7
8
9
10 8:55 6.7 23.8 45300 29.2
u
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Monthly Average Limit:
Monthly Average: 23.8 45300 29.2
Daily Maximum:
6.7 23.8 45300 29.2
Daily Minimum: 6.7 23.8 45300 29.2
■*0*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_NC0085553_Ver 1.0_2_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:02-2022(February 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:04/25/2022
Electronically Certified by David Albert Suther on 2022-03-25 09:14:24.253
ORC/Certifier Signature :David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-04-25 07:33:14.99
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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_NC0085553_Ver_1.0_2_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
F t
'a Grab Grab Grab Grab
a
eri7 pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
2
3
4
5
6
7
8
9 9:10 7.78 10.31 44700 28.6
10
II
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Avenge: 10.31 44700 28.6
Daily Minimum: 7.78 10.31 44700 28.6
Deily Minimum: 7.78
10.31 44700 28.6
****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_NC0085553_Ver_1.0_3_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
fi_ F m
A. • _ O a
E • I m Continuous 2 X month 2 X month MonthlyMonthlyQuarterlyQuarterlyMonthlyMonthly
y E i✓ C
y
a u` 8 I Recorder Grab Grab Grab Grab Grab Grab Grab Grab
u e 8 i u C
ce
0 U g. O O O z FLOW pH CHLORINE NH3-N-Cone DO TOTALN- TOTALP-Cone As-TOTAL CHLORIDE
2400 clock Hrs 2400 clack Hrs Y/BIN mgd su ug/I mg/1 mg/1 mg/I mg/I ug/I mg/I
1 7:10 8 B 0.025
2 6:10 10 B 0.046
3 6:10 10 B 0.014
4 6:10 10 B 0.057
5 0.047
6 0.047
7 7:10 8 B 0.047
8 6:10 10 B 0.045
9 8:40 6:10 10 B 0.049 7.6 2 4.61 22 264
10 6:10 10 B 0.063
ti 6:10 10 B 0.039
12 0.046
13 0.046
14 7:10 8 B 0.046
15 6:10 10 B 0.039
16 6:10 10 B 0.053
17 6:10 10 B 0.058
18 6:10 10 B 0.058
19 0.057
20 0.057
21 7:10 8 B 0.057
22 6:10 10 B 0.057
23 7:10 10 B 0.065
24 6:10 10 B 0.044
25 7:10 10 B 0.059
26 0.069
27 0.069
28 7:10 8 B 0.069
29 6:10 10 B 0.061 7.3
30 6:10 10 B 0.049
31 6:10 10 B 0.067
Monthly Average Limit: 10
Monthly Avenge: 0.051774 2 4.61 22 264
Daily Maximum: 0.069 7.6 2 4.61 22 264
Daily Minimum: 0.014 7.3 2 4.61 22 264
""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_NC0085553_Ver_1.0_3_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
i E
F e F v
E d s O
y 1 `E _ m Monthly Monthly Monthly i Monthly Monthly Monthly
E F Y
u 1 O . Grab Grab Grab Grab Grab Grab
o " v
2 U E= O O O 7 CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hn 2400 clock tin Y/B/N umhos/cm ug/1 ppt mg/1 ntu ug/I
1 7:10 8 B
2 6:10 10 B
3 6:10 10 B
4 6:10 10 B
5
6
7 7:10 8 B
8 6:10 10 B
9 8:40 6:10 10 B 2600 <10 1.3 1680 13.3 <10
10 6:10 10 B
11 6:10 10 B
12
13
14 7:10 8 B
15 6:10 10 B
16 6:10 10 B
17 6:10 10 B
•
18 6:10 10 B
19
20
21 7:10 8 B
22 6:10 10 B
23 7:10 10 B
24 6:10 10 B
25 7:10 10 B
26
27
28 7:10 8 B
29 6:10 10 B
30 6:10 10 B
31 6:10 10 B
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 2600 0 1.3 1680 13.3 0
Daily Maximum: 2600 0 1.3 1680 13.3 0
Daily Minimum: 2600 0 1.3 1680 13.3 0
s"'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 NC0085553_Ver_1.0_3_2022.pdf)
L

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
fi e Monthly Monthly Monthly Monthly
- t
S. Grab Grab Grab Grab
a
pa T pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
2
3
4
5
6
7
8
9 9:05 6.98 12.3 45600 29.4
1a
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 Avenge: 12.3 45600 29.4
Daily Maximum: 6.98 12.3 45600 29.4
Daily Minimum: 6.98 12.3 45600 29.4
••'"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_NC0085553_Ver_1.0_3_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Non-Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:05/02/2022
Electronically Certified by David Albert Suther on 2022-04-27 11:17:19.025
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-05-02 08:05:09.324
Permittee/Submitter Signature: * * *Joseph McCann Phone #: [phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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 NC0085553_Ver_1.0_3_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:03-2022(March 2022) VERSION:1.0 STATUS:Submitted
Report Comments:
Arsenic limit was exceeded.

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
F f
Grab Grab Grab Grab
p' z pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
1
2
3
4
5
6
7 8:45 6.9 10 37700 23.6
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Monthly Avenge Limit:
Monthly Avenge: 10 37700 23.6
Daily Maximum: 6.9 10 37700 23.6
Daily Minimum: 6.9 10 37700 23.6
'•"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 NC0085553_Ver_1.0_4_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*:. NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
E
P E F 17,A. F : O
Bg. 2.m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
QFA E P
& u a A C ' Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a o a b n a 44
O u 2 O O O 7 FLOW pH CHLORINE NH3-N-Coot DO TOTALN- TOTALP-Coot As-TOTAL CHLORIDE
2400 clock Hrc 2400 clock Hrs Y/WN mgd su ug/I mg/I mg/I mg/I mg/I ug/1 mg/1
1 6:10 10 Y 0.066
2 0.058
3 0.058
4 7:10 8 Y 0.058
5 6:10 10 Y 0.037
6 6:10 10 Y 0.036
7 8:25 6:10 10 Y 0.036 7.5 0.9 5.29 5.6 10.1 <10 485
8 6:10 10 Y 0.038
9 0.067
10 0.067
11 7:10 8 Y 0.067
12 6:10 10 Y 0.066
13 6:10 10 Y 0.041
14 6:10 10 Y 0.062
15 0.072
16 0.072
17 0.072
18 7:10 8 Y 0.072 7.3
19 7:10 8 Y 0.062
20 7:10 8 Y 0.074
21 7:10 8 N 0.049
22 6:10 10 N 0.05
23 0.047
24 0.047
25 7:10 8 Y 0.047
26 6:10 10 Y 0.044
27 6:10 10 Y 0.037
28 6:10 10 Y 0.039
29 6:10 10 Y 0.058
30 0.064
Monthly Average Limit: 10
Monthly Average: 0.055433 0.9 5.29 5.6 10.1 0 485
Daily Maximum: 0.074 7.5 0.9 5.29 5.6 10.1 0 485
Daily Minimum: 0.036 7.3 0.9 5.29 5.6 10.1 0 485
"'•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_NC0085553_Ver 1.0_4_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 TGE3E 00480 70295 00070 01092
I
P E F a 1
r, a o
e' c
y o E m Monthly Monthly Quarterly Monthly Monthly Monthly Monthly
E G F 'E
.g u 8 g Grab Grab Grab Grab Grab Grab Grab
e e u a
C U 2 O O O 7 CNDUCTVY COPPER MYSD24PF SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hrs 2400 clock Hrs Y/B/N umhos/cm ug/l pass/fail ppt mg/1 ntu ug/1
1 6:10 10 Y
2
3
4 7:10 8 Y
5 6:10 10 Y
6 6:10 10 Y
7 8:25 6:10 10 Y 2940 <10 PASS 1.5 1850 0.5 62
8 6:10 10 Y
9
10
11 7:10 8 Y
12 6:10 10 Y
13 6:10 10 Y
14 6:10 10 Y
15
16
17
18 7:10 8 Y
19 7:10 8 Y
20 7:10 8 Y
21 7:10 8 N
22 6:10 10 N
23
24
25 7:10 8 Y
26 6:10 10 Y
27 6:10 10 Y
28 6:10 10 Y
29 6:10 10 Y
30
Monthly Average Limit: 3.7 85.6
Monthly Average: 2940 0 1.5 1850 0.5 62
—
Daily Maximum: 2940 0 _ _ 1.5 1850 0.5 62
Daily Minimum: 2940 0 1.5 1850 0.5 62
'•"•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_NC0085553_Ver 1.0_4_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
E e Monthly Monthly Monthly Monthly
F t
Grab Grab Grab Grab
p 7 p11 DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
2
3
4
5
6
7 8:40 6.8 13.4 37800 23.9
8
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: 13.4 37800 23.9
Daily Minimum: 6.8 13.4 37800 23.9
Daily Minimum: 6.8 13.4 37800 23.9
"•'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_NC0085553_Ver_1.0_4_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:04-2022(April 2022) VERSION: 1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:06/01/2022
Electronically Certified by David Albert Suther on 2022-05-24 12:46:04.281
ORC/Certifier Signature : David Albert Suther Phone # : [phone] 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 Joseph McCann on 2022-06-01 06:54:12.475
Permittee/Submitter Signature: * * *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:
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 NC0085553_Ver_1.0_4_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
1
2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
18 8:10 7.02 4.43 52500 34.5
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Avenge: 4.43 52500 34.5
Daily Maximum: 7 02 4.43 52500 34.5
Daily Minimum: 7.02 4.43 52500 34.5
I'm 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_NC0085553_Ver_1.0_5_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
• 50050 00400 50060 C0610 00300 C0600 C0665 01002 00948
E
F- g F m S
e' =
.g •
8 8 -
r Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
a E < F fA
0Z 8 8
if, tY Recorder Grab Grab Grab Grab Grab Grab Grab Grab
E
8 F O0 8" O 7 FLOW pH CHLORINE NH3-N-Coat DO TOTAL N- TOTAL P-Cooc As-TOTAL CHLORIDE
2400 dock Hrs 2400 clock Hr. Y/B/N mgd su ug/1 mg/I mg/I mg/I mg/I ug/I mg/I
I 0.063
2 6:10 10 Y 0.063
3 6:10 10 Y 0.049
4 6:10 10 Y 0.095
1 5 6:10 10 Y 0.036
6 6:10 10 Y 0.039
7 0.06
8 0.06
9 6:10 10 Y 0.06
10 6:10 10 Y 0.052
II 6:10 10 Y 0.065
12 6:10 10 Y 0.064
13 6:10 10 Y 0.043
14 0.076
15 0.076
16 6:10 10 Y 0.076
17 6:10 10 Y 0.076
18 7:35 6:10 10 Y 0.054 6.72 2.3 5.29 3.4 1.72 0.006 387
19 6:10 10 Y 0.067
20 6:10 10 Y 0.058
21 0.068
22 0.068
23 6:10 10 Y 0.068
24 6:10 10 Y 0.066
25 6:10 10 Y 0.037
26 6:10 10 Y 0.038 6.93
27 6:10 10 Y 0.037
28 0.067
29 0.067
30 6:10 10 Y 0.067
31 6:10 10 B 0.067
Monthly Average Limit:
10
Monthly overage: 0.06071 2.3 5.29 3.4 1.72 0.006 387
Davy Maximum: 0.095 6.93 2.3 5.29 3.4 1.72 0.006 387
Daily Minimum: 0.036 6.72 2.3 5.29 3.4 1.72 0.006 387
•'••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_NC0085553 Ver_1.0_5_2022.pdf)
t

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 0104E 00480 70295 00070 01092
P. E E in
at F _
4 'e E m Monthly Monthly Monthly Monthly Monthly Monthly
0 < 'F y C
u C S. Grab Grab Grab Grab Grab Grab
u e w '' S U eS
U C F-' O O O i CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hn 2400 clock Hn Y/B/N umhos/cm ug/I ppt mg/I ntu ug/l
1
2 6:10 10 Y
3 6:10 10 Y
4 6:10 10 Y
5 6:10 10 Y
6 6:10 10 Y
7
8
9 6:10 10 Y
IO 6:10 10 Y
II 6:10 10 Y
12 6:10 10 Y
13 6:10 10 Y
14
15
16 6:10 10 Y
17 6:10 10 Y
IS 7:35 6:10 10 Y 2770 <0.001 1.4 1930 4.6 <0.01
19 6:10 10 Y
20 6:10 10 Y
21
22
23 6:10 10 Y
24 6:10 10 Y
25 6:10 10 Y
26 6:10 10 Y
27 6:10 10 Y
28
t
29
J0 6:10 10 Y
31 6:10 10 B
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 2770 0 1.4 1930 4.6 0
Daily Maximum: 2770 0 1.4 1930 4.6 0
Daily Minimum: 2770 0 1.4 1930 4.6 0
•*•"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_NC0085553_Ver_1.0_5_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
a
Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
a m pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhosicm ppt
1
2
3
4
5
6
7
9
10
11
12
13
14
15
16
17
18 8:05 6.78 4.01 50600 33
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Avenge: 4.01 50600 33
Daily Maximum: 6.78 4.01 50600 33
Daily Minimum: 6.78 4.01 50600 33
••••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_NC0085553_Ver_1.0_5_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Bnmswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Non-Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:06/29/2022
Electronically Certified by David Albert Suther on 2022-06-28 12:50:03.484
ORC/Certifier Signature:David Albert Suther Phone # . 910-457 - 7352 Date
I certifythat this report is accurate and complete to the best of myknowledge.
� P $
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 Joseph McCann on 2022-06-29 08:57:50.179
Permittee/Submitter Signature: ** *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:Envirochem
CERTIFIED LAB#:37729
PERSON(s)COLLECTING SAMPLES:Nathan Lindsay
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_NC0085553_Ver_1.0_5_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:05-2022(May 2022) VERSION: 1.0 STATUS:Submitted
Report Comments:
5/18/22 PH reading was low.

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
F f
Grab Grab Grab Grab
pH DO CNDUCTVY SALINITY
2400 clock su mg/1 umhos/cm ppt
2
3
6
7
8
9
10
11
12
13
l4 10:00 7.02 4.3 51500 33.7
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Monthly Avenge Limit:
Monthly Avenge: 4.3 51500 33.7
Daily Maximum: 7 02 4.3 51500 33.7
Daily Minimum:
7.02 4.3 51500 33.7
•"•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_NC0085553_Ver 1.0_6_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
I a :
F 1 F v,
I. . 7 O
E z 1 Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
m B < 1- 11 f
V'1
gu' - - 0 I. Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a a 8 8 U el
cC
A. d F' tJ t O 7 FLOW pH CHLORINE NH3-N-Coot DO TOTALN- TOTALP-Con, As-TOTAL CHLORIDE
2400 clock firs 2400 clock Hrs Y/B/N mgd su ug/I mg/I mg/I mg/I mg/1 ug/I mg/I
1 6:10 10 Y 0.037
2 6:10 10 Y 0.037
3 6:10 10 Y 0.03
4 0.023
5 0.023
6 6:10 10 N 0.023
7 6:10 10 Y 0.048
0 6:10 10 Y 0.062
9 6:10 10 Y 0.062
10 6:10 10 Y 0.064
11 0.062
12 0.062
13 6:10 10 N 0.062
14 9:00 6:10 10 Y 0.064 7.3 3.8 3.34 <10 476
15 6:10 10 Y 0.061
16 6:10 10 Y 0.065
17 6:10 10 Y 0.037
18 0.061
19 0.061
20 6:10 10 N 0.061
21 6:10 10 Y 0.065
22 6:10 10 Y 0.04
23 6:10 10 Y 0.038
24 6:10 10 Y 0.055
25 0.058
26 0.058
27 6:10 10 N 0.058
28 6:10 10 Y 0.063
29 6:10 10 Y 0.059 7.51
30 6:10 10 Y 0.062
Monthly Average Limit:
10
Monthly Avenge: 0.052033 3.8 3.34 0 476
Daily Minimum: 0.065 7.51 3.8 3.34 0 476
Daily Minimum: 0.023 7.3 3.8 3.34 0 476
""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 NC0085553_Ver_1.0_6_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
00094 01042 00480 70295 00070 01092
I.
F E F a
F
O
i. i E m Monthly Monthly Monthly Monthly Monthly Monthly
e in f
u — i o e. Grab Grab Grab Grab Grab Grab
m 0 ; 44 5
C U '12 O O 44
O i CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Mrs 2400 clock Hro Y/B/N umhos/cm ug/1 ppt mg/1 ntu ug/I
1 6:10 10 Y
2 6:10 10 Y
3 6:10 10 Y
4
5
6 6:10 10 N
-
7 6:10 10 Y
8 6:10 10 , -Y
9 6:10 10 Y
10 6:10 10 Y
ii
12
13 6:10 10 N
14 9:00 6:10 10 Y 3060 <10 1.6 1970 3.2 <10
15 6:10 10 Y
16 6:10 10 Y
17 6:10 10 Y
18
19
20 6:10 10 N
21 6:10 10 Y
22 6:10 10 Y
23 6:10 10 'Y
24 6:10 10 Y
25 1
26
27 6:10 10 N
28 6:10 10 Y
29 6:10 10 Y
10 6:10 10 Y
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 3060 0 1.6 1970 3.2 0
Daily Maximum: 3060 0 1.6 1970 3.2 0
Daily minimum: 3060 0 1.6 1970 3.2 0
••••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_NC0085553_Ver_1.0_6_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
• 00400 00300 00094 00480
Monthly Monthly Monthly Monthly
F t
_ Grab Grab Grab Grab
E m
a 7'. pH DO CNDUCTVY SALINITY
2400 dock su mg/I umhos/cm ppt
3
4
5
6
7
8
9
10
11
12
13
14 10:00 6.19 3.8 52200 34.2
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Monthly Avenge Limit:
Monthly Average: 3.8 52200 34.2
Daily Maximum: 6.19 3.8 52200 34.2
Daily Minimum. 6.19 3.8 52200 34.2
••••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_NC0085553_Ver_1.0_6_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:06-2022(June 2022) VERSION:1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:08/31/2022
Electronically Certified by Nathan James Lindsay on 2022-08-26 10:53:39.73
ORC/Certifier Signature:Nathan James Lindsay Phone #: [phone] 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 Joseph McCann on 2022-08-31 08:08:02.582
Permittee/Submitter Signature: ** *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:Environmental Chemists
CERTIFIED LAB#:94
PERSON(s)COLLECTING SAMPLES:Nathan Lindsay,Ian Carico,Jason Jacobs
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_NC0085553_Ver_1.0_6_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
a`
Monthly Monthly Monthly Monthly
F C
Grab Grab Grab Grab
E a
a y Z yH DO CNDUCTYY SALINITY
2400 clock su mg/I umhos/cm ppt
2
3
4
5
6
7
8
9
10 10:15 6.79 3.59 53200 35
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Avenge: 3.59 53200 35
Daily Maximum: 6.79 3.59 53200 35
Duly Minimum. 6.79 3.59 53200 35
••"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_NC0085553_Ver_1.0_8_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
B- E EF It
- 7 O w .
2 it =< E m Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
-
R.
a _u'6 i p 8 Recorder Grab Grab Grab Grab Grab Grab Grab Grab
a' e d a
O V 2 O O O i FLOW pH CHLORINE NH3-N-Cone DO TOTALN- TOTALP-Cone As-TOTAL CHLORIDE
2400 clock Hr4 2400 clock He, Y/B/N mgd su ug/I mg/1 mg/I mg/I mg/I ug/I mg/I
1 6:10 10 N 0.061
2 6:10 10 Y 0.064
3 6:10 10 Y 0.062
4 6:10 10 Y 0.061
5 6:10 10 Y 0.064
6 0.055
7 0.055
8 6:10 10 N 0.055
9 6:10 10 Y 0.037
10 9:10 6:10 10 Y 0.061 7.82 2.2 4.21 3.9 1.07 0.015 364
11 6:10 10 Y 0.061
12 6:10 10 Y 0.064
13 0.065
14 0.065
15 6:10 10 N 0.065
16 6:10 10 Y 0.065
17 6:10 10 Y 0.037
18 6:10 10 Y 0.041
19 6:10 10 Y 0.052
20 0.066
21 0.066
22 6:10 10 N 0.066
23 6:10 10 Y 0.063
24 6:10 10 Y 0.016
25 6:10 10 Y 0.066
26 6:10 10 Y 0.064
27 0.065 7.59
28 0.065
29 6:10 10 N 0.065
J0 6:10 10 Y 0.061
31 6:10 10 Y 0.066
Monthly Average Limit:
10
Monthly Avenge: 0.058677 2.2 4.21 3.9 1.07 0.015 364
Dolly Maximum: 0.066 7.82 2.2 4.21 3.9 1.07 0.015 364
Daily Minimum: 0.016 7.59 2.2 4.21 3.9 1.07 0.015 364
'I's"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_NC0085553_Ver_1.0_8_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION: 1.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
• 00094 01042 00480 70295 00070 01092
F E
a
F i
Ti 8
A E m Monthly Monthly Monthly Monthly Monthly Monthly
e E a` F y c
& Grab Grab Grab Grab Grab Grab
a e a o a
S U F O O O 7 CNDUCTVY COPPER SALINITY RES/DISS TURBIDTY ZINC
2400 clock Hn 2400 clock Hn Y/B/N umhos/cm ug/I ppt mg/I ntu ug/I
1 6:10 10 N
2 6:10 10 Y
3 6:10 10 Y
4 6:10 10 Y
5 6:10 10 Y
6
7
8 6:10 10 N
9 6:10 10 Y
10 9:10 6:10 10 Y 3090 <0.01 53.3 2090 4.2 <0.1
11 6:10 10 Y
12 6:10 10 Y
13
14
15 6:10 10 N
16 6:10 10 Y
17 6:10 10 Y
18 6:10 10 Y
19 6:10 10 Y
20
21
22 6:10 10 N
23 6:10 10 Y
24 6:10 10 Y
25 6:10 10 Y
26 6:10 10 Y
27
20
29 6:10 10 N
30 6:10 10 Y
31 6:10 10 Y
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge: 3090 0 53.3 2090 4.2 0
Daily Maximum: 3090 0 53.3 2090 4.2 0
Daily Minimum: 3090 0 53.3 2090 4.2 0
""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_NC0085553_Ver_1.0_8_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION:1.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
E � Monthly Monthly Monthly Monthly
Grab Grab Grab Grab
pH DO CNDUCTVY SALINITY
2400 clack so my/1 umhos/cm ppt
l
4
5
6
7
8
9
10 ID 15 6.31 3.57 53000 34.7
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Average: 3.57 53000 34.7
Daily Maximum: 6.31 3.57 53000 34.7
Daily Minimum: 6.31 3.57 53000 34.7
'..<\o 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_NC0085553_Ver_1.0_8_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:08-2022(August 2022) VERSION: 1.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE: 10/03/2022
Electronically Certified by Nathan James Lindsay on 2022-10-03 11:22:25.995
ORC/Certifier Signature :Nathan James Lindsay Phone #: [phone] 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 Joseph McCann on 2022-10-03 12:45:20.092
Permittee/Submitter Signature: * * *Joseph McCann Phone #: [phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:Environmental Chemists
CERTIFIED LAB#:94
PERSON(s)COLLECTING SAMPLES:Nathan Lindsay,Ian Carico,Jason Jacobs
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_NC0085553_Ver_1.0_8_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
11 GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
a
Monthly Monthly Monthly Monthly
d =
a ° Grab Grab Grab Grab
a E C
pH DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
2
3
4
5
6
7
8
9
10
11
12 9:50 6.77 4.3 51900 34
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Avenge Limit:
Monthly Avenge: 4.3 51900 34
Drily Maximum: 6.77 4.3 51900 34
Doily Minimum: 6.77 4.3 51900 34
ms 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_NC0085553_Ver_2.0_7_2022.pd0

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO
50050 00400 50060 C0610 00300 C0600 C0665 01002 00940
E
F E y
u F $
w O
E t r Continuous 2 X month 2 X month Monthly Monthly Quarterly Quarterly Monthly Monthly
E < F y E
& Recorder Grab Grab Grab Grab Grab Grab Grab Grab
e 3 8 8
U
u c2
C &- 8. O O 7 FLOW pH CHLORINE NH3-N-Con, DO TOTAL N- TOTAL P-Coo, As-TOTAL CHLORIDE
2400 clock IS,, 2400 dock Hrs Yni/N mgd su ug/1 mg/I mg/1 mg/I mg/I ug/I mg/1
1 0610 10 Y 0.053
2 0.06
3 0.06
4 0.06
5 0610 10 Y 0.06
6 0610 10 Y 0.032
7 0610 10 Y 0.052
8 0610 10 Y 0.06
9 0.061
10 0.061
I1 0610 10 N 0.061
12 8:40 0610 10 Y 0.06 7.47 4 3.34 5.9 2.22 <10 532
13 0610 10 Y 0.063
14 0610 10 Y 0.062
15 0610 10 Y 0.059
16 0.063
17 0.063
10 0610 10 N 0.063
19 0610 10 Y 0.063
20 0610 10 Y 0.063
21 0610 10 Y 0.063
22 0610 10 Y 0.036
23 0.058
24 0.058
25 0610 10 N 0.058
26 0610 10 Y 0.063
27 0610 10 Y 0.062
28 0610 10 Y 0.031
29 0610 10 Y 0.034 7.33
30 0.061
31 0.061
Monthly Avenge Limit: 10
Monthly Avenge: 0.056903 4 3.34 5.9 2.22 0 532
Daily Maximum: 0.063 7.47 4 3.34 5.9 2.22 0 532
Daily Minimum: 0.031 7.33 4 3.34 5.9 2.22 0 532
"•'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_NC0085553_Ver_2.0_7_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
SAMPLING LOCATION: EFFLUENT DISCHARGE NO.: 001 NO DISCHARGE*: NO (Continue)
E
00094 01042 TGEJE 00480 70295 00070 01092
E —
E F m 9
m .g E m Monthly Monthly Quarterly Monthly Monthly Monthly Monthly
E < h' y t
E u 8 S. Grab Grab Grab Grab Grab Grab Grab
6 6 u a
c" U E• O O. cc
o i CNDUCTVY COPPER MYSD24PF SALINITY RES/DISS TDRBIDTY ZINC
2400 clock Hn 2400 clock Hn Y/B/N umhos/cm ug/l pass/fail ppt _mg/I ntu ug/I
1 0610 10 Y
2
3
4
5 0610 10 Y
6 0610 10 Y
7 0610 10 Y
8 0610 10 Y
9
10
II 0610 10 N
12 8:40 0610 10 Y 3480 10 P 1.8 2380 3.2 64
13 0610 10 Y
14 0610 10 Y
15 0610 10 Y
16
17
18 0610 10 N
/9 0610 10 Y
,
20 0610 10 Y
21 0610 10 Y
22 0610 10 Y
-
23
24
25 0610 10 N
26 0610 10 Y
27 0610 10 Y
28 0610 10 Y
29 0610 10 Y
30
31
Monthly Avenge Limit: 3.7 85.6
Monthly Avenge:
3480 10 1.8 2380 3.2 64
Daily Maximum:
3480 10 1.8 2380 3.2 64
Daily Minimum: 3480 10 1.8 2380 3.2 64
••"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_NC0085553_Ver_2.0_7_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
SAMPLING LOCATION: UPSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
e e Monthly Monthly Monthly Monthly
F t
Grab Grab Grab Grab
PI, DO CNDUCTVY SALINITY
2400 clock su mg/I umhos/cm ppt
1
2
3
4
5
6
7
9
10
11
12 9:50 6.33 3.69 49200 32
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Monthly Average Limit:
Monthly Avenge: 3.69 49200 32
Daily Maximum: 6.33 3.69 49200 32
Daily Minimum: 6.33 3.69 49200 32
'•'•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_NC0085553_Ver_2.0_7_2022.pdt)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:Yes
eDMR PERIOD:07-2022(July 2022) VERSION:2.0 STATUS:Submitted
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:08/31/2022
Electronically Certified by Nathan James Lindsay on 2022-08-26 11:18:27.893
ORC/Certifier Signature :Nathan James Lindsay Phone # : [phone] 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 Joseph McCann on 2022-08-31 08:09:15.657
Permittee/Submitter Signature: ** *Joseph McCann Phone #:[phone] Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:Environmental Chemists
CERTIFIED LAB#:94
PERSON(s)COLLECTING SAMPLES:Nathan Lindsay,Ian Carico,Jason Jacobs
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_NC0085553_Ver_2.0_7_2022.pdf)

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:09-2022(September 2022) VERSION: 1.0 STATUS:Validated:Warnings
SAMPLING LOCATION: DOWNSTREAM DISCHARGE NO.: 001
00400 00300 00094 00480
Monthly Monthly Monthly Monthly
F t
Grab Grab Grab Grab
7 pH DO CNDUCTVY SALINITY
2400 dock su mg/1 umhos/cm ppt
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 Avenge Limit:
Monthly Avenge:
Daily Maximum:
Daily Minimum:
"a'No Reporting Reason:ENFRUSE=No Flow-Reuse/Recycle; ENVWTHR=No Visitation—Adverse Weather; NOFLOW=No Flow; HOLIDAY=No Visitation—Holiday

NPDES PERMIT NO.:NC0085553 PERMIT VERSION:5.0 PERMIT STATUS:Active
FACILITY NAME:Bald Head Island WTP CLASS:PCNC COUNTY:Brunswick
OWNER NAME:Village of Bald Head Island ORC:Not Required ORC CERT NUMBER:995491
GRADE:PCNC ORC HAS CHANGED:No
eDMR PERIOD:09-2022(September 2022) VERSION:1.0 STATUS:Validated:Warnings
COMPLIANCE STATUS:Compliant CONTACT PHONE#:[phone] SUBMISSION DATE:
/ /
ORC/Certifier Signature: E-Mail: Phone #: 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.
/ /
Permittee/Submitter Signature: *** E-Mail: Phone #: Date
Permittee Address:256 Edward Teach Extension Bald Head Island NC 28461 Permit Expiration Date: 11/30/2022
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:
CERTIFIED LAB#:
PERSON(s)COLLECTING SAMPLES:Nate Lindsey
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).

Attachment 6
WET Testing Results

1 9
4,
���
�
„ PO Box 7565
Asheville,NC 28802
Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
July 23, 2018
Mr. Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
RE: ETS PROJECT NUMBER: 13461
Dear Mr. Baker:
Enclosed are the results of a toxicity test for a sample from the Bald Head Island received by
Environmental Testing Solutions, Inc. on July 12, 2018.
Parameter Test Procedure EPA Method Final Result
Code Number
North Carolina Methodology for Determining Acute Toxicity in a
TG E3E Single Effluent Concentration—Revision:September 1994 EPA-82 I-R-02-012 PASS
Americanrysis(Mysk/opsis)Gahm Acute Pass/Fail Toxicity Test
If this test was performed as an NPDES requirement or by Administrative Letter, please enter a
P on the Effluent Discharge Monitoring Form (MR-1) for the collection date
July 11, 2018 using the parameter code TGE3E.
Additionally, please sign and submit the original DWQ Aquatic Toxicity Form (AT-2) by
August 31,2018.
If you have any questions concerning these results, please feel free to contact me.
Sincerely,
liffy
him Sumner
Laboratory Director
This report should not be reproduced.except in its entirety. without the written consent of Environmental'testing Solutions. Inc.
The results in this report relate only to the samples submitted for analysis.
North Carolina Certificate Numbers: Biological Analyses: 37, Drinking Water: 37786, Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

'•--••----- Page 1 of i
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012,Method 2007.0
Client Environmental Chemists,Inc. NPDES# NC0085553
Facility Bald Head Island Utilities Outfall 001
Project# 1bacQ\ County Brunswick
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 prepa ration: Sample pllution water mL
25.0 3 1.0'C In a warm water bath.Artificial sea salt was added to the sample to raise the salinity to
25.0 3 1.0 ppt The sample was then diluted to the test concentration prior to use with salt synthetic 990 110 1100
water.
Hours l Date Feeding Test Initiation or Termination Location Randomizing
Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
a laxcen Cll-n-1 ' VAS 131 1 L Ot2A ►60'l Q T\ cr-i-Io-I Q
Tr.�°rbn 0-1-►3-q t511
it
'Test organisms were fed In holding 2 to 5 hour,prior to test Initiation.Test urgani:ms were not`1cd during the test
Chemical Analyses: Test Organism Information:
Initial Final
g Concentration Analyst HJ' i ._ Organism Source: Aquatic A uatic Indicators,Inc.
pH(s.u.) '1103 il Batch(Al Batch Ab):
II Dissolved oxygen img/L} V � ^--�
Can[of T• `� Age(1 to 5 days old): (�v is
g.- salt sW ��
`Salinity(ppt)
25:2 1 2 Date organisms were born: (time �_(�4-18
J organisms were born between is not
`Alkalinity(mg/L CaCO,)
`OD provided by supplier)
`Temperature('CI —tt•� IA.t Average transfer volume: <0.25mL
pH(S.U.) --y 99 itiJ 11 Transfer bowl information: pH(S.U.): 1.11
Test
Dissolved oxygen(mg/L) �`Ij
( W Temperature(°C):
Concentration -.Salinity(ppt)
"Temperature('c) ..-LS•0 —‘:k•
100Y pH(s.U.) 7'y
.9
Salted Dissolved oxygca(mg/L) I ( I i
I "'Salinity(ppt)
�4
pH(S.U.)
8•29
I 1063� Dissolved oxygen(mg/L)
1 106%
`Salinity(ppt) t''S
'Analyst Identified for each day,performed pH,dissolved oxygen and
Conductivity(ysmhos/era) conductivity measurements only.Temperature and salinity performed at the
25/O time of test Initiation or termination by the analyst performing the toxicity test.
11 `Total residual chlorine(mg/L) .c.o•(0 Alkalinity and total residual chlorine performed by the analysts identified on 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 10 10 10 10 10 10 10 10 Method NILSt)0I IW)
Initiation
FStat or Rank Sum t�\
`+C
24 Termination iD l0 I 10 tp 10 10 1C? CrltitalrTacal
Mean survival: /061- Mean survival: I CL)i ,FAIL
AA LS or PASS
Comment codes: d=dead,u=unhealthy,s=stressed
IComments:
SOP AT41-Exhibit AT4 l 2,revls'on 11-01.14

® . 1.g,, , Americamysis (Mysidopsis) bahia
J Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc. Source: Aquatic Indicators, Inc.
IIIIIIIIIIII I I I I I I I I
0.54 — Control Limits (± 2 Standard Deviations)
0.52 — —
___®.x ---<,..a
- .� —,a.,_.— ..n,,,.. — .e. —_ . >----- - -...�.
• • `"_` • •
0.50 — —
• • • • • • • .—,..•—
- • • • • • • •
V 0.48 — •
. , �.__.�® ""."'""' _.. .®'
One. .�.o.e..,..�. wawa cm.....�... �--
- -
(113 0.46 — —
o IIIIIIII I I I 1 I I I I I I I I
Ln
U
0.65 III IIIIIIIIIIIIIIIII
s 0.60 - Warning Limits -
t 0.55 — —
0.50 — • • • •�• • .•. -,�• —• — • —
•
0.40 — —
1 II 1 1 1 I I 1 1 I I i 1 I 1 I I I 1
0l.gii e)01.10 Oa 0_pi:p606 pi.1�.1p.1a O`�Oa pcY 10' 101�1,y01'1..- 10 pc)"P ° A6 OQ 03 Z. c f 0a 06 of,"i 1019
Test date
• 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 LCso converted to anti-logarithmic values)
—m Control Limits (mean logarithmic LCso±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±SA io converted to anti-logarithmic values,
SA.10=10th percentile of CVs reported nationally by USEPA)
i.red end
Nw.w d In
n Sunner
A

kS PO Box 7565
{ .l Asheville,NC 28802
f I Phone: [phone]
Fax: [phone]
•,? Environmental Testing Solutions,Inc.
April 20, 2018
Mr. Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
RE: ETS PROJECT NUMBER: 13241
Dear Mr. Baker:
Enclosed are the results of a toxicity test for a sample from the Bald Head Island received by
Environmental Testing Solutions, Inc. on April 05, 2018.
Parameter Test Procedure EPA Method Final Result
Code Number
North Carolina Methodology for Determining Acute Toxicity in a
TGE3E Single[_••f(luentConcentration—Revision:September 1994 EPA-821-R-02-012 PASS
Americarnysis(,blvsidohsis)bcrhia Acute Pass/Fail Toxicity Test
If this test was performed as an NPDES requirement or by Administrative Letter, please enter a
P on the Effluent Discharge Monitoring Form (MR-1) for the collection date
April 04, 2018 using the parameter code TGE3E.
Additionally, please sign and submit the original DWQ Aquatic Toxicity Form (AT-2) by
May 31, 2018.
If you have any questions concerning these results, please feel free to contact me.
Sincerely,
Jim umner
Laboratory Director
This report should not be reproduced,except in its entirety.without the written consent of Environmental Testing Solutions.Inc.
The results in this report relate only to the samples submitted for analysis.
North Carolina Certificate Numbers: Biological Analyses: 37, Drinking Water: 37786, Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

I
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia Page 1 of 1
EPA-821-R-02-012,Method 2007.0
Client Environmental Chemists,Inc.
I NPDES# lVC0085553
Facility Bald Head Island Utilities
Outfall 001
Project# \3—L.A.*\
County Brunswick
Test Concentration(Acute Limit) 90%
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to Dilutpreps rn mL
mL Total volume
25.011.0°C in a warns water bath.Artificial sea salt was added to the sample to raise the snllnity to Preparation: Sample Dilution water mL 25.021.0 ppt,The sample was then diluted to the test concentration prior to usewith salt synthetic water. 990 110 1100
Hours Feeding etling
Date Test Initiation or Termination Location Randomising
Time Analyst Time
Analyst incubator/Shelf Template
0 Sample Number Salt SW Batch
.,m"ren Q�a�tf! lL G�2ee� �Po�1oS.t5 a3 t8 tY g
I t 2 5 tt'�1
'Test organisms were fed In holding 2 to 5 hours prior to test Initiation.Test organisms were not fed during the test.
I Chemical Analyses:
Test Organism Information:
Initial Final
Concentration Analyst (' /�
J ( Organism Source: Aquatic Indicators,Inc.
i-IPH(S.U.) B.bV
7-80 Batch(Al Batch Ab):
Dissolved oxygen(mg/L) O'1-b\-l&
'l
Control
`S
Salt SW '0 1:3 Age(1 to 5 days old): ,` S
*Salinity(plot) y.
l3•3 _ Date organisms were horn: (time
"Alkalinity(mg/LCaCO,} )ti� organisms were born between is not Oy'01-tk
provided by supplier)
"Temperature CCI
-1S-0 -1.S-0 Average transfer volume: <0.25 mL
pH(S.u.)
8-/3 CO 2G Transferbowf information;
Dissolved oxen(mg/L)
yg p U pH(S.U.): "�.
Test �• f
Concentration *Salinity(ppt) Temperature(°C);
ALi•° 2.3 1S.o
*Temperature(°c)
IM 1
pH(S.U.)
Salted
Dissolved oxygen(mg/L)
'5alinity(ppt) �l(!-(^7
Ut Y' T'
pH(S.U.)
100% Dissolved oxygen(mg/L)
J C)
*Salinity(ppt)
(4.2 'Analyst identified for each day,performed pH,dissolved a
Conductivity(Pmhos/cmJ conductivity measurements only.Temperature and salinity oxygen and
`� ty performed at the
�d time of test initiation or termination by the analyst performing the toacity test,
`Total residual chlorine{mg/L) < Alkalinity and total residua/chlorine performed by the analysts identified on the
0
.
\p test specific bench sheets and transcribed to this bench sheet.
Survival Data (number of living organisms):
Control Test Concentration
Flours
Replicate Replicate
A B C D E
F G H statistics:
at 10 10
Initiation
10 10 10 10 10 10 Method J ls-AL i.v/t
t-Stat or '+r 1��}} r"�-
z4 iO /(1 i to
(�, / Rank Sum r`rC.
Terms a l./ '" 1 o -1 Sion cl 1-Tailed
Critical
Mean survival: i DO/- Mean survival: 07 PASS or
Comment codes: d=dead,u=unhealthy,s=stressed FAIL r°A
Comments:
SOPATgi-Exhihit Ar41.2,revision 11-01-14

r ',.4 / f
,te�i�`. 1.''' }}t#h U:fit v2 2.`���i is ii W L`..
® �.c($ ,,,v# ,t C.
«x 351 Depot Street
y 'yi `1t:} .
1 AP C 7
Asheville,NC 28801
I__
Phone: [phone]
1 t
Environmental Testing Fax: [phone]
-•ww' ng Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES#: NC0085553 Pipe#: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Americanryrsis(Mhsidopsis) balria Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
Sample information: (to be completed by sample collector)
Crab sample: Sample location: f 0 -4//
Date: + —9 - 4 Time: 9 - 00 Volume collected for testing: / 9.11
Number of containers filled for testing: /
Method of transport to laboratory: G.,4".1,64%
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)
Sample collected by:
/✓a rA4n I t4NI>r�
�:,, su.y ..�, 9.. oo Am
Print Signature Dale and time ?
Relinquished by: f Received by:
d,k
Penn StgitaU rc Dar and lonekri,,fic4,,,z71,r,14? i l a S-��,
Print Signaturen Datee and time
Relinquishedby Received by:
°:-.3?5.,.4 I Jwch,, 1
J
Fe-a DPrml 'u nnaturc - / I
g Date and tunic Print Signature
Date and tume
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
I 014•06"IR Fullt, I 1°LiiiAde H ii,-,,, I IA_
/0. 1
Pont Signature Date and tune I
Print Signature Date and nine
Custody seals intact?: ` I EnSample temperature upon receipt at ETS(°C):
Yes No Not used 5,0•/�
Samples received in good condition?: t
Yes No Total residual chlorine upon receipt at ETS: _
e j"� ,/� (DPD Presence/Absensc Indicator,MDL=0.10 mWL) Present Absent
Tracking number: laii b‘t
Project number: 1324,1 Sample number: 1 eottf;ales-
Comments:

Americamysis (Mysidopsis) bahia
lit
' t Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc. Source: Aquatic Indicators, Inc.
I I 1 1 I I I 1 I I I I I I I 1 I I I I
0.54 -
Control Limits (± 2 Standard Deviations)
0.52 -
0.50 - • • • •• • • • • • •
• •
• . __. _ • • • • -
V 0.48 - • -
tto 0.46 -
I I I I I I l I I I I 1 I I I I I I I 1 .
0.65
_II I I I I I I I I I
L _
s 0.60 - Warning Limits
1
0.55 -
0.50 - • • • • • . _ •
_-•• ••- • • -
• •
0.40 -
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1y�ti yiCO�1AZ OZ0� �3p1'�A,pA DyO� �6ok 0�i 0I 1$�$O`��9.9 D10 1011'1101 Lp9 oyp9 O�0 o .oc3" 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 ToxCaic).
.o Central Tendency(mean logarithmic LC56 converted to anti-logarithmic values)
Control Limits (mean logarithmic LCS0±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 LC50±SA to converted to anti-logarithmic values,
SA 10=10th percentile of CVs reported nationally by USEPA)
[mtrctland
:~
t�sr�.r,

l� - 0J75
al }
a f r
t � si PO Box 7565
6 , ,
" y`' Asheville,NC 28802
Phone: [phone]
I Fax: [phone]
Environmental Testing Solutions,Inc.
February 23, 2018
Mr. Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
RE: ETS PROJECT NUMBER: 13092
Dear Mr. Baker:
Enclosed are the results of a toxicity test for a sample from the Bald Head Island received by
Environmental Testing Solutions, Inc. on February 09, 2018.
Parameter Test Procedure EPA Method Final Result
Code Number
North Carolina Methodology for Determining Acute Toxicity in a
TG E3E Single Effluent Concentration—Revision:September 1994 EPA-82 1-R-02-0 12 PASS
Americamysis(.Mysidopsis)hahia Acute Pass/Fail Toxicity Test
If this test was performed as an NPDES requirement or by Administrative Letter, please enter a
P on the Effluent Discharge Monitoring Form (MR-1) for the collection date
February 08, 2018 using the parameter code TGE3E.
Additionally, please sign and submit the original DWQ Aquatic Toxicity Form (AT-2) by
March 31, 2018.
If you have any questions concerning these results, please feel free to contact me.
Sincerely,
Jim umner
Laboratory Director
This report should not be reproduced,except in its entirety,without the written consent of Environmental Testing Solutions. Inc.
The results in this report relate only to the samples submitted for analysis.
North Carolina Certificate Numbers: Biological Analyses: 37, Drinking Water: 37786, Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

�'-'...-.- Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
IEPA-821-R-02-012,Method 2007.0
Client Environmental Chemists, Inc. NPDES# NC0085553
I Facility Bald Head Island Utilities Outfall 001
Project# _Bat
County Brunswick
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
25.0±1-0°C in a warm water bath.Artificial sea salt was added to the sample to raise the salinity to preparation: Sample Dilution water m L
25.0±1.0 ppt.The sample was then diluted to the test concentration prior to use with salt synthetic 990
110 1100
water.
IHours Date Feeding Test Initiation or Termination Location Randomlting
Time Analyst Time Analyst Incubator/Shelf Template Sample Number Salt SW Batch
,°m° *
uen o1:oA-t - crlbo �,y ,t 3a ( F
z4
d► � I�LlJ2. t$O�t�'t 02-a�-t�
Tr<m:,,ra° I lACk tfS'. kib•N
'Test organisms were fed in holding 2 to$hours prior to test initiation.Test organisms were not fed during the test.
IChemical Analyses: Test Organism Information:
Initial Final
Concentration Analyst
MS es4 Organism Source: Aquatic Indicators,Inc.
I pH(S.U.) _.61.2, tLisi2.11 Batch(Al Batch Ab):
vit61o4-tg
Dissolved oxygen(mg/L)
Control -‘.--j 1.5 Age(Ito 5 days old): 5 bitkS
' salt sw *Salinity(ppt) -IA.,1 Date organisms were born: (time
1 A4;,(O 0-2'OS-t F
*Alkalinity(mg/L CaCO3) organisms were born between is not
Ab t,l provided by supplier)
*Temperature(°C) -�`'
LA-E 1.`‘n 1 Average transfer volume: <0.25 mL
I pH(S.U.) s.70 4-1l ry Transfer bowl information:
pH(S.u.): —1.1%1
Dissolved oxygen(mg/L) f
Test 6.8 '},S"- Temperature('C):
Concentration *salinity(ppt) ..2.5-0
Za-3 arsA
*Temperature 1°C) -LS-0 'LS•O
100% pH(S.u,)
I salted Dissolved oxygen(mg/L)
*Salinity(ppt) (0-Q
pH(S.u.)
R.02 L
Dissolved oxygen(mg/L)
6-6'
*Salinity(ppt)
2.' •Analyst identified for each day,performed pH,dissolved oxygen and
I Conductivity(pmitos/cm) (.7�*t conductivity measurements only.Temperature and salinity performed at the
time of test initiation or termination by the analyst performing the toxicity test.
*Total residual chlorine(mg/L) � Alkalinity and total residual chlorine performed by the analysts identified on the
O test specific bench sheets and transcribed to this trench sheet.
ISurvival Data (number of living organisms):
Control Test Concentration
Hours
Replicate Replicate
A B C D E F G H -
Statistics:
'
0 10 10 10 10 10 10 10 10 Method V(StIA L liv
Initiation
t-Stator
Rank Sum Pk
24 to /0 /p ip /(21 10 '0 rp
I-Tailed `'
Termination /r
Critical y
Mean survival: 1007• Mean survival: (DO"(_ PASS or PASS
Comment codes: d=dead,u=unhealthy,s=stressed FAIL
'Comments:
SOP AT41-Exhibit AT41.2,revision 11-01-14

•
351 Depot Street
e::li'A ° , ' `. F,h Asheville,NC 28801
r., r Phone: [phone]
q —I Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists, Inc. NPDES#: NC0085553 Pipe#: 001 County: Brunswick
Bald Head Island Purchase order
Species: Americamysis(Mysidopsis)bahia Effluent dilution: 90%
Test type 24-hour Pass/Fail Acute Parameter code: TAA3E
Sample information: (to be completed by sample collector)
Grab sample: Q �j Sample location: eizfr.-
Date: 2--' 1 /.5-- �---r �' 1��� t1�D71rt
�( g Time: Volume collected for testing: / Gil
Number of containers filled for testing: /
Method of transport to laboratory: Pe+e, jC.
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)
Sample collected by:
(ni rhA/1 r-irrwu�ve 1 �/$
Ir,ldfay l 9:9-s
Dwc,Ie
i.ne
Relinquished by: Received by:
0/.....--- I I'4/9„., F/Vi" 0,2
, P 48
S,pc Dee mri!inn
Rio slpw:ve Dmc wd tine
Relinquished by: Received by:
I--- FIA— ..F.7—."—
H1/4- I 1
Prim
Sipe,gee Dmc.ed,ism Rim Si1wa tine
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by;
r` 1 W N0!8
'} l l 1���-- I v— y!$P ...;inc UJ
Pr<.N Sip.,,I.n'
y seats intact. Sample�.
- temperature upon receipt at ETS(°C):
Samples received in good condition?: _ ICss-41
v`. " Total residual chlorine upon receipt at ETS: ME 1-71
Tracking number. I �YJ
f�1 I/-! -1.(3{(J✓�00 (DPD PresenceinbuxMIDI_=(In indicator,MIDI_ mtJt.) ah' '
A
Project number:l 5CAZ Sample number: 1.60 AM,alb
comments: 6ANte e NOV' t)seb. SNAPIe exc,eebc µ4t.0 "TIMe-
U PO N ketR tin- Dki e. -it) Cene,4 44.0Ot2,

et
�E .
c .l i 351 Depot Street
LI i Asheville,NC 28801
I j \% Phone: [phone]
- Fax: [phone]
_ ' Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES#: NC0085553 Pipe#: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Aint'ricamysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TAA3E
Sample information: (to be completed by sample collector)
Grab sample: Sample location: A,o a u,A, /Q o /l ooy..
Date: ). .e•1 S Time: 6P-3 o Volume collected for testing: / Ciw/
Number of containers filled for testing: d /
Method of transport to laboratory: F•epQ4,,.
i
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.
,ample custody: (to be completed by sample collector and facility personnel)
Sample collected by:
A'A,rho 11 yy i Z--B-it
L lea dies y P.)o
Pint a000,n IMte..1 lux
Relinquished by: Received by:
��'4 t� 1 •
t f 1� t2tit:r-
IY>m Spviscc Oslo.1 lane I'M IAIC sod link
Relinquished by: Received by:
/AeJ
I'ImI .: IAIo and Mc lint Sµ,131m Dalo aal{1.1W
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
t�c o20�.W. Ot 1.1©
1" ctu4 qss I' 041ST
t m sv... t ml:m: {Yon Sputum IJ�L•anti rm:
Custody seals intact?: ri n n Sample temperature upon receipt at ETS CC):
Y Lac)Not l I,L -
�(v
Samples received in good condition?: 1- 1 n
Yes No Total residual chlorine upon receipt at ETS: F-1 1-71
(DPD PresenedAbsense Indicator.MDL=0.10 mg/L) ih ''
Tracking number: 1 ('e Project numbera � 0� Sample number: 9-ri-Comments:

r
a Americamysis (Mysidopsis) bahia
0 j f Acute Reference Toxicant Control Chart
.) Environmental Testing Solutions,Inc. Source: Aquatic Indicators, Inc.
1 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 - -
-�-�.. ....-�war. .aaa
0.50 - • • •-_ • • • • • • •
i • • • •
V 0.48 - • •
-
Q. 0.46 - _
O I I 1 I I I l 1 1 I 1 l I I I I I I 1 I
0.6s
I !- I 1 I I 1 I I I I I I I I I I I I I
L
0 0.60 - Warning Limits
00I
0.55 - -
0.40 -
1 l 1 I I I I I I I I_ I I t i I I I 1 I
09 13 1P pA 1101 1tiO 0 1potipl Ai O AA of, Or 0� S10 1$oAa o919 0A.1,s 11 NfS. :1:0(7.
p9 oio61a
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 LC,±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 LC,±SA10 converted to anti-logarithmic values,
Salo=10`h percentile of CVs reported nationally by USEPA)
nnMmd
Reviewed by

PO Box 7565
Asheville, NC 28802
' Phone: [phone]
Environmental Testing Solutions.fne.
Fax: [phone]
November 22, 2019
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington,NC 28405
ETS Project Number: 14654
Facility Tested: Bald Head Island Utilities
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter
Code Test Procedure,Method Number Result
PASS FAIL
TGE3E Americamysis Pass/Fail Acute Toxicity Test x/
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(a7ncdenr.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,
rtif�`—_'
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

` PC Box 7565
Asheville, NC 28802
Phone: [phone]
r"`""""°"T"'"'�°" °°""` Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: November 22,2019
Facility: Environmental Chemists, Inc. NPDES 4: NC 0085553 Pipe 4: 001 County: Brunswick
Bald Head Island Utilities
Laboratory Performing Test: Environmental Testing Solu
tions,Inc. Certificate
to ri 037 Comments:
Signature of Operator in Responsible Charge(ORC):
ORC Phone/E-mail: Project e: 14654
Signature of Laboratory Supervisor: cyc Sample 8: 191107.08
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: 11-06-19 Organism Tested
Collection Time: 0930
Test Start Date: 11-07-19 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration Control 7.92 7.95
X Q pH(S.U.)
x Treatment 7.84 8.41
Alkalinity(mg CaCO,/L) 100 Niagaga `9
Salinity(Initial/Adjusted)(ppt) 24.9 2.7/24.6 Control 7.8 7.8
Total Residual Chlorine(mg/L) ` <0.10 D.O.(mg/L)
Treatment 8.0 7.8
Sample Temp.at Receipt(°C) kI 2.7
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% 0% 0% 0% 0% 0.0%
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square Root t-Stat/Rank Sum NC PASS X
transformed data. 1-Tailed Critical NC 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 fall.
DWR Report Form AT-2

I'
Pace 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
v1EPA-821-R-02-012,Method 2007.0
Client Environmental Chemists,inc. NPDES k NC
0085553
Facility Bald Head Island Utilities Outfall 001
Project# t9L 5 County Brunswick
--, Test Concentration(Acute Limit) 90% Dilution ml ml Total volume
Sample was not aerated or treated unless otherwise noted on Chitform Cho sample was warmed preparation: Sample Dilution water nil
to 25.0 I L O'C Ina warm sealer bath.nrtitltlal tea leis was added to the sample to raise the nhnhy
to 2501 10 ppt The tamale was thsrsdduted to the test concentration with salt synthetic water, 990 110 1100
1 Feedlnl 7Mt lnillulon or Termination Locaten Randomising Hours Date Sample Number Salt SW Batch
1 Tirnt Analyst Time Analyst incubator/Shelf Template
-m24
.n IA-1/V Q I1b Vt 1 et'S lit
S i'tlast�
rcn it—D b`tC l�°S
1 -Test organisms were lad In holding 2 to 5 hours prior to lest Initiation.Test organisms wet 4 fed during the test
1 Chemical Analyses: Test Organism Information:
1 Initial Final
)-[� g
eoncentnuan Analyst Organism Source: Indicators,Aquatic tndicato ,Inc.
pH(S.U.) t n
c12 4.,_G- Batch(AI Batch Ab): tl-crb-i l
! Control Dissolved oxygen(meti .,-p T•g Age(1 to 5 days old): Lt
ltllOW 'Salinity(opt) ,y�.Q z�• Date organisms were born: (time `i_T4_tq
•Alkalinity(mg/C CaCO,) �1 l }1 organisms were born between is
100 not provided by supplier)
•Tempcm(ure{°Gl -S,0 1 •1 Average transfer volume: c 0.2S ml
pH{S.u.) Transfer bowt —
..aJl information:
.L 55 p S.u.). 'L J
Dissolved oxygen Imlt/ll
Test 6-07'V Temperature -
I
Concentration 'SalMiry(ppo) � �I•i
'Temperature(°c) -IS 3 -15.1—
f wax pH(s u.l
.7.87_
(Salinity Dissolved oxygen(mg/L)
Adjusted) /n 0
L 'Salinity Scot) r)V
pH(S.u.) �F
�f2
Dissaived oxygen(me/L)
6-1
a5si)nlCy(opt) •Analyst rdorgiiled for each day,performed pH.dissolved orygep and
_ 1Dax �.� conductivity moo suremontt only Temperature and saltndy performed at b'so
Conductivity(pmhos/cm) time of test Initiation or termination by the ana Nst performing the toxicity
YYSO test Alkahosty and total residual chlorine performed by she analysts
'Total residual chlorine(mg/L) <O .iC� Identified no the test specific leech sheets and transcribed to this bench
sheet
Survival Data (number of living organisms):
Control Test Concentration
Hours
Replicate Replicate
A B C 0 E F G H Statistics:
_ 0 10 10 10 10 10 10 10 10 Method vtSt (/.ls(1
Initiation
[•Slat or
IP 24
Termination f V J 10 r lJ'r, \J fo I/� / Rank Sum NC.,O �0 1-Teltcd
Crltkal
Mean survival: /007 Mean survival: /037 PASS or nor{
ril
FAIL Y U
Comment codes: d=dead,u=unhealthy,s n stressed
Comments:
11 — —.]
Grit,ATal.nev.tlnn c.Fahila t ATat 2

• .ry Mn comPfian-1-
°Mwta''�TKtS1'
tits �•�wr
351 Depot Street
Asheville,NC 28801
Phone: [phone]
Fax: [phone]
,) Environmental Testing Solutions,Inc. /71- 47i
Whole Effluent Toxicity Ch ' ustody Form
Facility: Environmental Chemists,Inc- NPDFS H: Pipe I!: 001 County: Brunswick
Bald Head Island Purchasccider:
Species: 4nrericamysis(Mysidopsis)Gahiu FRlucntdilution: 90%
Test type. 24-hour Pass/Fail Acute Pammetercoilc: TAA3E
Sample information: (to be completed by sample collector)
Crab sample: / q.7 Sample location: a✓,f-4lf
Date: // b // Time: /.,f O4m \roluinecollected for testing: / 9.'+a/i' rt
Number of containers tilled for testing: ph e
Method of transport to laburatory:
Comments: 1 /
Triple rinse sample container with snmplc before filling. Completely fill the sample container with no air space.
Pack the sample container completely in ice. The sample must lie<6.0"C upon receipt at the laboratory.
Sample custody: (to be completed by:ample collector and facility personnel)
Scripts sullttad by:
IRS hy�uln 11,1<an lac
O lingni.inJ by: Rccci•nf by:
I1/4/fez
R,n rt•LL \Io.nWc 1w<.e.1 u,K
ReIingu rill N I by: Recclvre by:
It/bjt�t (/1UCi.l 5
Prtn �snwr V nue..J1n Ism ,r-,.c i4,<���,c
•
^u
Sample receipt information: (to be completed by ETS personnel)
Relinguished to EIS by: ileccivnl a rIS by:
Ds13 r0(13 3
lw.1+1Sc suaa.t u.c t•nn spu„a n.c..a,b�
Custody seats intact?: I Sample temperature upon receipt at ETS CC):
Samples received in good condition?: n
v^ Total residual chlorine upon receipt at ETS:
Q, l� (DM)Procucc,Absnn se lndkaior,UDI-^e.Igmg L) I•"� �'""
'tracking number:eiz5e)e'-2 i Z 9
Project numbcr: 'x-1 Sample number: ks'�tli i Q' - S
Comments:

r{ ' ,foszy Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Envlrenm.nrAl Tailing Solutions,Inc. Source: Aquatic
c Ind
icators,dicators inc.
I I 1 1 1 ] I I ] l 1 1 I l I I r i I
0.54 -
Control Limits(± 2 Standard Deviations)
0.52 -
__ _
0.50 _ • .. _ ,.. _ �_.- ♦_ �__. ,,. .. _.. -
•
0.48 - ._ W. ., - • _
ba 0.46 -
I I I I I I 1 1 I I 1 I I I I I I I I 1
.vl 0.65
L _
t 0.60 - Warning Limits
oa -
0.55 - -
•
0.45
0.40 - `
8 1 1 1 l 1 1 1 1 1 1 1 I 1 l 1
1 I I 1
OQA3 py.0a DyrOS 0�IP pg.01 9IN 1e1.11O 1.01 p10WQ1 O 0 OS 01-0501. 60a 9i09.O 0 Al POW11OW
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 LC„converted to anti-logarithmic values)
--• Control Limits (mean logarithmic LCsp±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±SA.m converted to anti-logarithmic values,
SA io=10`h percentile of CVs reported nationally by USEPA)
P Iwwr

r
73
SS1, k' PO Box 7565
Asheville,NC 28802
Phone: [phone]
Fax: [phone]
,)
Environmental Testing Solutions,Inc.
October 25,2019
Mr. Jay Baker
Environmental Chemists,Inc.
6602 Windmill Way
Wilmington,NC 28405
RE: ETS PROJECT NUMBER: 14594
Dear Mr. Baker:
Enclosed are the results of a toxicity test for a sample from the Bald Head Island received by
Environmental Testing Solutions, Inc. on October 10,2019.
Parameter Test Procedure EPA Method Final Result
Code Number
North Carolina Methodology for Determining Acute Toxicity in a
TGE3E Single Effluent Concentration—Revision:September 1994 EPA-821-R-02-012 FAIL [•� /0
drrrerican,ysis(lvtysidopsis)balria Acute Pass/Foil Toxicity Test
If this test was performed as an NPDES requirement or by Administrative Letter,please enter an
F on the Effluent Discharge Monitoring Form (MR-1)for the collection date
October 09,2019 using the parameter code TGE3E.
Additionally, please sign and submit the original DWQ Aquatic Toxicity Form(AT-2)by
November 30, 2019.
If you have any questions concerning these results, please feel free to contact me.
Sincerely,
µ
J. Sumner
Laboratory Director
This report should not be reproduced,except in its entirety,without the written consent of Environmental Testing Solutions,Inc.
The results in this report relate only to the samples submitted for analysis.
North Carolina Certificate Numbers: Biological Analyses: 37,Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

i 'Mon inn ra
Page Iof1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R o2-012, Method 2007.0
Client Environmental Chemists,Inc. NPDES H NC0085553
Facility Bald Head Island Utilities outfail 001
Project u 1459 L.{ County Brunswick
Test Concentration(Acute Limit) 90% Dilution mL
Sample was not aerated or treated unless otherwise noted on fmL Total volume
this arm.The sample was warmed preparation: Sample Dilution water mL
to 25.0 s 1.0.0 fn a warm water bath.Artificial sea salt wat added to the sample to raise the salinity
to 25.0 t L1 ppt.The smote was then diluted to the test concentration with salt synthetic water.
990 110 1100
Hours Date Feeding Test initiation or Termination Location Randomizing
Time Analyst Time Analyst Incubator/She1! Template sample Number scan SW each
10.10.15 ' Ockto A t 155 ( 1 b uylitie, Vti l .11 10.6E•14
I 24 t 4 C
'Test organisms were led in holding 2 to 5 hours prior to toss Initiation.Test organisms wore not fed during the test.
IChemical Analyses: lest Organism Information:
Initial Final
Concentration Anal st a�
Y f C t _S Organism Source: Aquatic indicators,Inc.
pH(S.U.) y Batch(Al Batch Ab):
Dissolved oxygen(mg/L) � T
9S tO •01.-%i
Control 7 o —?8 Age(1 to 5 days old): 4 b A�S
sa ltsw •Sallnity(Opt) "i
ZQ 2. .l Date organisms were born: (time 1Q'Qys 1�
'Alkalinity(mg/LcaCO3) �� "! organisms were bore between is
not provided by supplier)
'Temperature(°c)
'Z$•\ •tS.v Average transfer volume: <0.25 mL
pH(S.U.) qu (p Transfer bowl information:
Dissolved oxygen(mg/L)
Test .'7 rat
Concentration •Salinft 'T u Temperature CC):
(PPtI 14.8 21L9 1s,t
*Temperature(°c) is L ,LS.ei
100% pH(S.U.) 7
93
(salinity Dissolved oxygen(mg/L)
Adjusted) -1.
•5alinity(opt) 8
.att.a
pH(S.U.)
8.zo
oxygen(mg/t)
100% Dissolved TV-
'Salinity Opt) 'Analyst identified for each day,performed pH,dissolved ocygan and
3,Q canductwity measurements only.Temperature and salinity performed at the
Conductivity{pmhos/cm) LI9Y0 time of test Initiation or termination by the analyst performing the toakity
test.Alkalinity and total residual chlorine performed by the analysts
*Total residual chlorine(mg/L) V at� Identified on the test specific bench sheets and transcribed to this bench
sheet.
ISurvival Data (number of living organisms):
Control Test Concentration
Hours
Replicate Replicate
A B C D E F G H Statistics:
0 10 10 10 10 10 10 10 10 Method ‘t5I)RL l Initiation krat
t-Stat or
24 t i
0 t U
A. S�. b„4 Rank Sum NC
Termination 1•Talled
critical N�
Mean survival: Ob Z. Mean survival: SZ S 7• PASS or
Comment codes: d=dead,u=unhealthy,s=stressed FAIL
rpm._
I 100mments:
I

•
i$t i (i'': ) 's W�
' + '4 7"4'l k 351 Depot Street
'._. ".•. `�� Asheville,NC 2880E
i q
1 Phone: [phone]
3 t�Y-s Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES ti: NC0085553 Pipe If: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Americatnysis(Mysidopsis)ba/tin Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
. -SIC -,2. .,
Sample information: (to be completed by sample collector)
Grab sample:
Sample location: 00 f 0 v
Date: /°q-10 /� Volume __C 0>7
Time: (C� collected for testing:
1 Number of contain
ers filled for tes
ting:
Method of transport to laboratory: P
res
Comm
ents:cots:
1 Triple rinse sample container with sample before filling. Completely till the sample container with no air space.
Packthe 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)
• Sample rationed by:
I
/V6)fh An I l 0-9-/9
L ., dick I . 9
Print
1 P
Signature Cure and ti -
RclinquisI J by:
Received by:
I
I �o`/C /"tC ��rl�Cs �' tcJr11<<t
root ! I - 12- I
Signature Date and time Print
Signature Da[c and tune
Relinquished by:
Received by:
f
1 le,,e.,MI-142Th J - '-/ a-I —1 I I
Pont Signature Date and inn; I
.. .. _..` ._... .
Pont Sgn.l.uc Don and Usc
��
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by:
I
I
Received at ETS by:
I
I
I kit,
Pant I I (h) /,
Siynatute Date and tine Punt "
Signature Dare and Unit
Custody seals intact?: t ,lNESample temperature upon receipt at ETS(°C):
Yes No Not used _J L
Samples received In good condition?: 71 f �Y
Yes No Total residual chlorine upon receipt at ETS:
g 2�G}11��0� T
�'1 (DPD Prescncc/Abscnsc Indicator,MDL-,0.10 mg/L)Tracking number: l6'
Project number: 14%4 Sample number: !q 11)1 4,1-4
Comments:

Americamysis (Mysidopsis) bahia
i lam, Acute Reference Toxicant Control Chart
L -J Envitenm.nedTosting Solutions.Inc. Source: Aquatic Indicators, Inc.
IIIIIIIIIIIIIIIIIIII
0.54 - Control Limits (± 2 Standard Deviations)
0.52 - -
•
0.50 - w • -
• • • •
• • • • • • • • • • • -
V 0.48 - • -
Y
0.46 - -
I l 1 I I I I I I 1 I 1 I I 1 1 I I I I
„Vj 0.65 IIIIIIIIIIIIIIIIIIII
s 0.60 - Warning Limitstzt
00 - -
0.55 - -
0.50 - • • .._ ..:.. . • • -
- • • • • • • • • •• • • • •
0.40 - -
1 1 1 1 1 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1
1 O 1i1 1O � D 19 O19 �9 106 A$� OS010p .01' 11.9o01AQ0Q .tit 0$
OgopS61 OS OW • L L 3Q o °
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 LCso converted to anti-logarithmic values)
——— Control Limits (mean logarithmic LC ,±2 standard deviations converted to anti-logarithmic values)
—•.—.• Laboratory Warning Limits(mean logarithmic LCo±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LC,±SA.,,converted to anti-logarithmic values,
sa.io=10th percentile of CVs reported nationally by USEPA)
1y

/ 9- O3go
,�, lAU @dJy!.riil 7aW :i11 ,,A4
:i tg.: i,k \ ,t�ty � PO Box 7565
Asheville,NC 28802
y f i Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
April 22,2019
Mr.Jay Baker
Environmental Chemists,Inc.
6602 Windmill Way
Wilmington,NC 28405
RE: ETS PROJECT NUMBER: 14136
Dear Mr. Baker:
Enclosed are the results of a toxicity test for a sample from the Bald Head Island received by
Environmental TestingSolutions, Inc. on April 04,2019.
P
Parameter Test Procedure EPA Method Final Result
Code Number
North Carolina Methodology for Determining Acute Toxicity in a
TG E3E Single Effluent Concentration—Revision:September 1944 EPA-82I-R-02-012 FAIL
4 nericarnysis(iW sidopsis)Bahia Acute Pass/Fail Toxicity Test
If this test was performed as an NPDES requirement or by Administrative Letter,please enter an
F on the Effluent Discharge Monitoring Form(MR-1)for the collection date
April 03,2019 using the parameter code TGE3E.
Additionally,please sign and submit the original DWQ Aquatic Toxicity Form(AT-2) by
May 31,2019.
If you have any questions concerning these results, please feel free to contact me.
Sincerely,
Jim umner
Laboratory Director
This report should not be reproduced,except in its entirety,without the written consent of Environmental Testing Solutions,Inc.
The results in this report relate only to the samples submitted for analysis.
North Carolina Certificate Numbers: Biological Analyses: 37,Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

I . =�f
"' Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012,Method 2007.0
Client Environmental Chemists,Inc. NPDES It NC0085553
t
Facility Bald Head Island Utilities Outfall 001
Projecttt lyt-L County Brunswick
Test Concentration(Acute Limit) 90% Dilution mt. mt. 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 a 1.0 C Ina warm water bark.Artificial sea salt was added to the sample to raise the salinity to
25.0 01,0 ppt.The sample was then diluted to the test concentration prior to use with tall synthetic 990 110 1100
water.
—
Hours Date Feeding Test Initiation or Termination location dandomiefog
Time Analyst Time Analyst incubator/shelf Templatt Sample Number San SW batch
ta,°ea n 044r4-tti ' o6 i0 kt *l�to A 1� WAtT� 15%040l cs•1146
24,—e 0�l uS-1ti�area t1v+3 ik
•Test organisms were fed in holding 2 to 5 hours prior to test Initiation.Test organisms were not fed during the test.
1 Chemical Analyses: Test Organism Information:
Initial Final
Concentration Analyst ' ,,a,{(' Organism Source: Aquatic Indicators,Inc.
pH(s.u.) era 3 17 e' Batch(Al Batch Ab):
Dissolved oxygen(mg/t) -�`•��
Control 1%(1 1-'1Age(Ito 5 days old): A O'ea,As
1 salt SW *Salinity(pot)
W Zit 9
i Date organisms were born: (time 014 as-3,,.ti
'Alkalinity(mg/l CaCo1) e! 1 organisms were born between is not
�(J provided by supplier)
`Temperature(°c) •IA,y •Ls.0 Average transfer volume: <0.25 ml
pH(s,u.) 7-Y Y 7.69 Transfer bow(Information:
pH(S.U.): —k.b0
Dissolved oxygen(mg/l) �y 8
Tact -1 Temperature 1°C):
Coneentratlen "Salinity(ppt) s•[t Z. "��,&
.Ga
1 'Temperature(°C) '.�•, -,.S••Q
lair
Salted Dissolved oxygen(mg/L)
S.o
r 'Salinity(pot) 25, 1
pH(S.u.)
100%
Dissolved oxygen(mg/l) P.o�
go
•Salinity(ppt) c?. r
`j 'Analyst Identified tar each day,performed pH,dissolved oaygea and
Conductivity(Jumbos/cm) conductivity measurements only.Temperature and salinity performed at the
7 07Q time of tart Imitation or termination by the analyst performing the toakity lost.
III `Total residual chlorine(met) 4 0010 Alkalinity and total residual chlorine performed bytheanalysts identified onthe
test speeiik bench sheets and transcribed to this bench sheet.
Survival Data (number of living organisms):
Control Test Concentration
Hours
Replicate Replicate
11, A B C D e F G H Statistics: 15
0
10 10 10 10 10 10 Z0 10 Method .1)UVA1.. tiJsP
Initiation
•
t•Stat so ,`C^
24 /O l 0. t 0 10 Z 3 �VOt Rank Sum
' i Termination
Critical
--- Mean survival: \00 1. Mean survival: ^� PASS or
3-z.S I FAIL k`L
Comment codes: d=dead,u=unhealthy,s=stressed
Comments:
SOP AT4I-E.hbt AT41.2,revit'on 11-01.14

r
3 , a,
exa ` i; r, sl,t`f.r ,04';+� �►� 351 Depot Street
CD ys,'' it,•,� `i ;t;.,•._ Asheville,NC 28801
_ ). 3 J�p r Phone: [phone]
! Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES#: NC0085553 Pipe#: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Antericantysis(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: Q& I Ott f.fiell/
Date: //- 3- / Time: g.,j—,S' Volume collected for testing: t/(o,a
Number of containers filled for testing: / tt t
Method of transport to laboratory: 4/rJ4oi 7r, t,wd/i,Ox
Comments:
f
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
v ! Sample custody: (to be completed by sample collector and facility personnel
)
Sample collected by:
jirltra Ste-kir "7..1 -:.--/-.---
NMI Signature Date and tint
Relinquished by: Received by:
++ ;ALI ,---yitc:7-3- t44q
Pant 5ignstnrc Dale and time Print Signat Date and link
. Relinquished by: Received by:
ti/3Iy 64-
Print Signa(uae(/ Date and tune Pent Sngnatutc Dale and time
1
l a e���a ezre - -,._
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
re f-e °Yo4,S ICU-- v4--- b 0? 3
Pam 5I nature Ode and time Print Signalurr Dec and lire
Custody seals intact?: I I MI Sample temperature upon receipt at ETS(°C):
Yes N° Nut cud lb .C'
Samples received in good condition?:Th MI
Yen ND Total residual chlorine upon receipt at ETS: _ l ``.... }
"" t[ r (DPD Presence/Absense Indicator,MDL=0.l0 tng/L) Pneeent At'''''
number: +2 T 03(4g�'n 1�2Z
Project number: (413(4 Sample number: iclpe1ty4.01
Comments:

� Los 4%L1'04 Americamysis (Mysidopsis) bahia
,P.az-� >`1
Sys
I 1 Acute Reference Toxicant Control Chart
Environmental Totting Solutions.Inc. Source: Aquatic Indicators, Inc.
1 I I I I I I I I I I I I I I 1 I I I I
0.54 - _
Control Limits (± 2 Standard Deviations)
0.52 -
—__..._ _.__._ r... _ w—__..-._..__
• • ......._-.--.
0.50 - • -
• •—...- ! •
-
r-.. • • • • • • • • • • •
Z30.48 - ....._........�.-._.�- ..�- --...._.---.....-_.-...._-..•---........e._... ..-..-.._..._.. ....__ -
.— ..r. M-.."" -- -
J _
W 0.46 -
-
co
o I I I I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
0.65
I I I I 1 1 1 I 1 I f I I I I 1 I 1 I 1
0.60 - Warning Limits
s _
4.4 - _
0.55 -
• • • • • • •
• •
-
0.40 `-
-
1 II 1 1 I I I I I I 1 I i j I 1 ill
10-3.y0" IN,'" 1.1--- ov- ol-06 03.06 oA 03 0'.0$0b— 0�.'0 — 03- Se:L'y SV- SI- OV-O�OS 03- Oe -
Test date
• 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 LCso converted to anti-logarithmic values)
——•- Control Limits (mean logarithmic LCso±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±Salo converted to anti-logarithmic values,
Salo=10th percentile of CVs reported nationally by USEPA)
.t.,,..
Saturn
g

r
tHetn�t1`tS'7� asy� w s1' 3t
a; t ant" t PO Box 7565
Asheville,NC 28802
Phone: [phone]
.j / Fax: [phone]
yy Environmental Testing Solutions,Inc.
January 25,2019
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington,NC 28405
RE: ETS PROJECT NUMBER: 13916
Dear Mr. Baker:
Enclosed are the results of a toxicity test for a sample from the Bald Head Island received by
Environmental Testing Solutions, Inc. on January 10,2019.
Parameter Test Procedure EPA Method Final Result
Code Number
North Carolina Methodology for Determining Acute Toxicity in a
TGE3E Single Effluent Concentration—Revision:September 199,1 EPA-82I-R 02-012 PASS
ibnericmnysis(rtaysidopsis)baba Acute Pass/fait Toxicity Test
If this test was performed as an NPDES requirement or by Administrative Letter,please enter a
P on the Effluent Discharge Monitoring Form (MR-1)for the collection date
January 09,2019 using the parameter code TGE3E.
Additionally,please sign and submit the original DWQ Aquatic Toxicity Form (AT-2) by
February 28, 2019.
If you have any questions concerning these results,please feel free to contact me.
Sincerely,
Sumner
Laboratory Director
v consent f Environmental Testing Inc.
This report should not be reproduced,except in its entirety,without the� I Ittcn once o S Solutions,
The results in this report relate only to the samples submitted for analysis,
North Carolina Certificate Numbers: Biological Analyses: 37, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

___..__.. Page 1 of 1
I Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamvsis bahia
EPA-821-R-02-012,Method 2007.0
Client Environmental Chemists,Inc. NPDES r( NC0085553
rFacility Bald Head Island Utilities Outfall 001
Project It t1&11110 County Brunswick
ITest Concentration(Acute Limit} 90% Dilution mi. ml Total volume
Sample was not aerated or treated unless otherwise noted on this form.The smnpie was warmed to preparation: Sample Dilution water mL
25.031_0°C In o warm water bath.Artlrmlal sea salt was added to the sample to raise the salinity to '
25.031.0 ppt.The sample was than dieted to the test concentration prior to use with sah synthetic 990 11D 110D
water.
Feeding Test Initiation or Termination Location Aandomlrint
noun Date Sample dumber Sale SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
e�tva to lei 11 !t A• we 1
DSO �& 4C. S t `� i-
b 0 9ota a ot�t
1C..0on UV V In '.,r, ( �.. .t ;;'. VI:IS r r * t . ,I.�s
°'Test organisms were fed in I roldhsg 2 to Shows polur to test IniltoTco.Ttst orEanl:ms wore n al fcd dur(ng the test.
IChemical Analyses: Test Organism information:
Initial Final
Concentration Analyst Organism Source: Aquatic Indicators,Inc.
1 pH(S.U.1 e ho may°yz. Batch(Al Batch Ab): 0\"Vie 1
Dissolved oxygen(ng/L) * 6 7 U� bA�S
Control Age(1 to 5 days old):
Salt sw 'Salinity(ppl) Date organisms were born: (time
Z�1,4 2 , a
`�^ ` organisms were born between is not t-{�b-l-`
I 'AI(salinity(me/LCacos) a i✓ provided by supplier)
'Temperature('q Ag°\ 'I i Average transfer volume_ <D.25 mi
p; pH(s.u.) 4-vU dzZ Transfer bowl information: H -1.6,,R.
Dissolved oxygen(mg/L)
Test "/,Ct .e Temperature(t):
Concentration °Salinity(ppt) aq.R 25.c "15 0
*Temperature toci
100% pH(s.U.) '1 a
-9.7
salted Dissolved oxygen(me/L)
la ct
"Salinity(plot) "'f S.0 . ..
pH(S.U.) S Z 7 1 { �'
r,
Dissolved oxygen(me/L) --7r
i t
z00% 'Salinity(Fpt!
I,t i •Analyst Identiflcd foe oath day,performed pH,utssolved oxygen and
ConduUfvit hos cm conductivity measurements only.Temperature and salinity performed at the
y(Wn / ) 'Lac, ,t,' ,� time of tut initiation or termination by the analyst porforming tho toxicity test.
'Total residual chlorine(mg/L) �0,lO Alkuknityandtotalresidualchfor.neperformedbytheanalystsIdentifiedonthe
test specilk hunch sheets and transcribed to this bench sleet.
Survival Data (number of living organisms):
Control Test Concentration
Hours
Replicate Replicate
I
A a c D E F G 1-1Statistics:
1 0 Method 10 10 10 14 10 1Q 10 10 v SJtAL IJ4P
Initfatton t-slat or _
/� '((�� Rank Sum �y
24 10 I Q /0 I (0 /0 'O tV 1-Tailed
Termination CriticalPASS /N
Mean survival: lop}_ Mean survival: (bct
!' ruts or lr' �
Comment codes: d o dead,u=unhealthy,5=stressed
Comments:
50P AT41-Echlblt AT41.2,revision 11-01-14

6 st. 35 I Depot Street
is 4�;c�` tJ: 5 j
` ,,44 .. R Asheville,NC 2880I
09 t l� 1 ;t rT--_ 1 `/ Phone: [phone]
•- Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES#: NC0085553 Pipe 0: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Americam_l cis(Mysidopsis) ba/tia 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: 00 1 0 c'`1"4//
Date: /-9 -I/p Time: / : 10 Am Volume collected for testing: / aye,//op
Number ofcontainers filled for testing: Qn.0
Method of transport to laboratory: IQ )C.
Comments:
I
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
Pncl<the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory. i
. Sample custody: (to be completed by sample collector and facility personnel)
Sample collected by: y
/VA�fta/) ' x f-9-I 9
L RrJf,,y --,..:- —,, 9: (o Ary '
trust Signature Darn and Lune
Relinquished by: Received by:
�v /971
C, _ 0l'09'1 q
Pal S,gnarnn Date mod tors Feat4
Print Ss ton: Dale and tunic
Relinquished by: Received by:
a .I
Print Sgxutur. Date and lime t'tnN S,gnalure Dam and tins
E
Sample receipt information: (to be completed by ETS personnel)
Rclinqutshcd In ETS by: Received at E rS by:
#=P rah--� °'/Do 3 _ �' — r1— °'f°a.
`'
rnr.l Sigjtalutc Data and lint Pant Sisnalruc Data anJ lunc
Custody seals intact?: IN ( I ` I Sample temperature upon receipt at ETS CC): r �r-
Yen No Not iced 1�a `�
Samples received in good condition?: IN"- I
y'es No Total residual chlorine upon receipt at ETS:
r (01'U I'resence/Absensc Indicator,MDL.=0.10 mg/I..) Presad Mint
J '!'racking number: ell'r 6�-I Zicc
Project number: l3&to Sample number: ( ilb Ho, (4
Comments:

o 4 �� Americamysis (Mysidopsis) bahia
1_ =` , � ,) Acute Reference Toxicant Control Chart
Environmental Testing Solutions•Inr. Source: Aquatic Indicators, Inc.
1 1 1 1 I 1 I 1 I I 1 1 I 1 I 1 I 1 1 I
0.54 -
Control Limits (± 2 Standard Deviations) -
0.52 -
o.
•
0.50 - • • •
• • • • • • • • • • -
.3 0.48 - -- "............... ____.,.—................_............ _
..J _
0.46 -
in
O 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I _
U
0.65
IIIIIIIIIIIIIII II III
.c 0.60 - Warning Limits _
ob -
szt
0.55 - _
0.50 - • —..—.._
e• • •• •
_ • • ems• • • • • • • e-• -.
0.45 - — _.._.._.. ..._..._..........._..._..._...._..._..—..._...._-..._...—.._....._....
0.40 -
I 1 1 1 i II 1 1 I I I i I it 1 1 i 1
0-11g 0�0A 62— 55 03'O.' 1�A�1y A5 6v— Oy 06 03 06 ow—3 62 O�62— 0�10 0�— 00'15' IN- 1,-- 0,.." 9
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 LC„converted to anti-logarithmic values)
——-•- Control Limits (mean logarithmic LC„±2 standard deviations converted to anti-logarithmic values)
—••--.. Laboratory Warning Limits(mean logarithmic LC,±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LCC±Salo converted to anti-logarithmic values,
Salo=1.0th percentile of CVs reported nationally by USEPA)
mullsIn
taw

MEN
5ffiT
k, ,�ra PO Box 7565
t �.3tR rw � ;, w, 4 Asheville,NC 28802
"! Jt f' Phone: [phone]
1 Fax: [phone]
E-mail: [e-mail]
•—_.• .' Environmental Testing Solutions,Inc.
Effluent ToxicityReport
R port Form -Acute Pass/Fail Date: January 25,2019
Facility: Environmental Chemists NPDES#: NC-0085553 Pipe#: 001 County: Brunswick
Bald Head Island
Laboratory Performing Test: Environmental Testino utiona, In . Comments:
Signature of Operator in Responsible Charge: _.." ,,��� Project: 13916
Signature of Laboratory Supervisor: , gy/A.A."____ Sample: 190110.14
Mail Original To: North Carolina Department of Environment and Natural Resources
DWQ/Environmental Sciences Branch
1621 Mail Service Center
Raleigh,NC 27699-1 621
North Carolina Acute Pass/Fail Toxicity Test
Collection Date: 01-09-19 Organism Tested
Collection Time: 0910
Test Start Date: 01-10-19 Americamysis 011ysitlopsis)Labia
Sample/Type/Duration ;
s.
Grab Comp. Duration o pH (S.U.} Control 8.10 7.92
X - uTreatment 7.94 8.22
o l= tr v
Alkalinity(mg CaCO3/L) 120 EMU; . 0 inn ul
Salinity(Initial/Final)(PPt) 24.9 1.4/25.0 Control 7.8 ' 7.8
Total Residual Chlorine(mg/L) "'.
0 10 D.O.{mg/L) Treatment 7.9 7.8
Sample Temp.at Receipt(°C) in 1.2
Mortality Replicate Mean Mortality
Treatment 1 (Control) A BCD
0% 0% 0% 0% 0.0%
Treatment 2(Exposure) A BCD
Concentration
Tested 90% 0% 0% 0% 0% 0.0%
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Calculated Student's t NC PASS X
Square Root transformed Tabular Student's t , NC FAIL .
data. (ONE TAILED)
-- lithe absolute value of ttte calculated t is less than or equal to the absolute value of the tabular t,check PASS.
lithe 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.
D1YQ form AT--2(8/D/)

• o %2 4 (
PO Box 7565
Asheville, NC 28802
Phone: [phone]
. Environmental Testing Solution;Inc. Fax: [phone]
October 23, 2020
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 15466
Test Start Date: 10-08-20
Facility Tested: Bald Head Island Utilities
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.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 Sumner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037,Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

7771 177, PO Box 7565
Asheville, NC 28802
Phone: [phone]
rnw,onnenalresungsaw<r°nc^c Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: October 23, 2020
Facility: Environmental Chemists, Inc. NPDES#: NC 0085553 Pipe#: 001 County: Brunswick
Bald Head Island Utilities
Laboratory Performing Test: Environmental Testing Solutions, Inc. Certificate#037 Comments
Signature of Operator in Responsible Charge(ORC): /joy/ J„fj�P
ORC Phone/E-mail: Project a: 15466
Signature of Laboratory Supervisor: r Sample t: 201008.13
e-Mail to: A [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: 10-07-20 Organism Tested
Collection Time: 103S
Test Start Date: 10-08-20 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration p6(S D Control 7.91 7.91
)
X s Treatment 8.00 8.23
Alkalinity(mg CaCO3/L) 98
Salinity(Initial/Adjusted)(ppt) 24.8 1.9/24.7 Control 7.9 7.7
D.Q.(mg/L) •
Total Residual Chlorine(mg/L) <0.10 Treatment 8.2 8.1
Sample Temp.at Receipt(°C) 3.6
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% 0% 0% 0% 0% 0.0%
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square t-Stat/ Rank Sum NA PASS X
Roottransformed 1-Tailed
t ans ormed data. �, 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

1 Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis Bahia
EPA-821-R-02-012, Method 2007.0
Client Environmental Chemists, Inc. NPDES# NC0085553
IFacility Bald Head Island Utilities Outfall 001
Project li t.S4kel,o County Brunswick
D Test Concentration(Acute Limit) 90% Dilution mL nil
Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to preparation: Sample Dilution water teL
25 0±1 O'C in a warm water bath. Artificia`sea Bait was added to the sample to raise the salinity to
25 0 0 1 0 ppt.The sample was then dIiuted to the test concentration with salt synthetic water. 990 110 1100
11
Feeding Test Initiation or Termination Location Randomiaing ~
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template
11 B ItyO�'lt} + Cr1 O i lt�?'�- 1 ( t 14tT!T 2o u t . is l0-os, ()
awl rr.,," J1\ �{@LIGsJ
24
Term natal io to zo toSO I1
'Test organisms were fed in holding 2 to 5 hours prior to test initiation. Test organisms were not red during the test
Chemical Analyses: 'Analyst identified for each day,performed pH and dissolved oxygen measurements only.Temperature
r 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
li Concentration Analyst
sheets and transcribed to this bench sheet.
•
j f 4` if"l�l�
pH{S.U.} •t �� Chemical analyses:
Dissolved oxygen(mg/L) a T'' -y Parameter Reporting limit Method number Meter Serial number
qqq Control 1
I
Salt SW "Salinity(ppt) 2 8 24.4
-
m pH 0.1 S.U. SM 4500-He 0.2011 Atcuet AR20 93312452
_.. `Alkalinity(mg/t CaC01)i AO Obtained oxygen t.0 mg/L SM 4500-0G-2011 Y51 Model 52CE 180104324
+Temperature(°C) 14-1_ '1...5•, Conductivity 14.9µmhos/cm SM25108.2011 AccumetAR20 93312452
) pH(S.U.) Salinity 1.0 ppt SM 2520 8-2011 YSI PR030 180104324
6.00 tY-23
Dissolved oxygen(mg/L) ,o -� ,O ( Alkalinity 5.0 mg CaCO,JL SM 2320 0-2011 Accumet AR20 93312452
1 Test •
Conc 11
Concentration "Salinity(ppt) 2.4 43 Total residual mat ORION 97-70-1977 Accumet A8250 92349123
chlorine '-Lt'
"Temperature(°C) •�-A \S., temperature 0.1°C SM 2550B-2010 Digital Thermometer t3rU1w•or6
iQ0% pH(S.u.) cjic i Test Organism Information:
(salinity Dissolved oxygen(mg/I) eg Z Organism Source: Aquatic Indicators,Inc.
Adjusted)
•Salinity(ppt) {�."1 Batch(Al Batch Ab): 1t1 pc}•-1.0pH fS.U.I eN$ Age(1 to 5 days old): Ll 'I NAS
Dissolved oxygen(mg/L) Date organisms were born: (time
100% e SAME AS BATCH DATE ABOVE
'Salinity(ppt) organisms were born between was not
I provided by supplier)
Conductivity(µmhos/cm) /� Average transfer volume: <0.25 mII t.
_*Total residual chlorine(mg/L) 4 0.i U Transfer bowl information: pH(s.U.)x g 53 Temp(°e)= is,a
Survival Data (number of living organisms):
liControl Test Concentration Statistics:
Hours Method J15� tNsP
Replicate Replicate
A B C 0 E F G H N
t-stat or Rank
C
10 10 10 10 10 10 10 10 �C
Imdation 1-tailed Critical
24 )lj i O J 0 10 I Q 10 /0 /0 PASS or FAIL P6SC
Termination
Mean survival: IO01- Mean survival: /007-
IComment codes: d=dead,u=unhealthy,5=stressed

t 351 Depot Street
Asheville,NC 28801
Phone: [phone]
Fax: [phone]
EnvirontnentaITesting Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists, Inc. NPDES p: NC0085553 Pipe 4: 001 County: Brunswick
Bald Head Island Purchase order:
Species: A►nericamysis(Mysidopsis) baltia 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: 0¢ I Oa/
Date: /O/7/,20 Time: /0 , � Volume collected for testing: 64f-
,t Number of containers filled for testing:
ii
Method of transport to laboratory:
sr`r. 4
Comments: j
'I
t
Triple rinse sample container with sample before filling. Completely till the sample container with no air space.
il
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory. 1.
c
it
ii
.npte 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 a
4 Sample collected by:
/r // f� /O'7. 2.Q
ii
tY,nt ti.£.-a:me Date and cm,
(p Relinquished by: Received by:
l 13 /� ,(J /} /� Z, , 'c/1/
:£ !�dArr'-�j✓tltr r �„�, e 1.2.-,p p IG.kA44 -ndl i•'IrOP�.. (
4 font S,�re!�c Date and tine Pnna i s-r:uf+'� note and lirtr ii
4y 4Relinquished by:ti k,,,,, ,,,,.„4.,........7 ,....,....,...../._.7, alb.: Received by:Si
1 tr-.0
qI'��nt a o.:nn. Ont<and tn,, Pnn %:inaSc.n One and In,
k-.mmaa,o:o.:s-:s.,:.:o..t...-._::. <:.:n-,::a.,.:-.:: xin,Y.,.--one-.».,,-...n-a .,.,_.:.:..w:>ar:::.a:,::::.ey....:a::.amp::_::s::.w+,:a,»;.::Gsnr;a...,rmac.,craw.- +n.arA;csx:w.rs.-*.>,Xr..y,.:,,ra:.n:: .w,a..:..a.�..,a.:.:..a.,:,aa..rn.�cv,
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by; Received at ETS by:
Pont s;ssra.:uce Date and time Pa,-.t Swaturc 11,tc and time
Custody seats intact?: U = - Sample temperature upon receipt at ETS(°C): t t
Samples received in good condition?: Fl n
y`* a,. Total residual chlorine upon receipt at ETS: Q I If
f DPD Presence Ahsen;e Indicator,MDL=0 IC)mglL) ;``a na Aisost
Tracking number. q ' - oei Li 1 r
Project number: WQV Sample number: C)t 0 8,3
Comments:

1 , Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions.Inc. Source: Aquatic Indicators, Inc.
1 I 1 1 I I 1 I I I I I 1 1 1 I 1 I I I
0.54 — Control Limits (± 2 Standard Deviations)
0.52 —
•G,w
0.50 — • • •
• • • • • • •
to 0.46 — —
G I I 1 I I I I 1 1 I 1 I 1 I I I 1 I 1 I
0.65
s_
s 0.60 — Warning Limits
0.55 — —
• • •
0.45 — n —
0.40 —
1 I 1 I I 1 1 1 1 1 1 1 1 I 1 1 1 1 1 1
05,190.' 01190a,19091g0 ' ••.11g0(1.- 0S19O'N190.1:L0OaZO(Ay001ti0OS° 02yOO.IyO11Z015.20oiti0
03' 00. OS' 06' of Os' 09' .`0• 'i yL_ 0L 0y 03. 0a. 0S. 06. 01. 0$. 09. 10.
Test date
• 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).
Ku,....-......._._ Central Tendency(mean logarithmic LCso converted to anti-logarithmic values)
..., Control Limits (mean logarithmic LCso±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±SA.io converted to anti-logarithmic values,
SA,o=10th percentile of CVs reported nationally by USEPA)

taTIV
PO Box 7565
Asheville, NC 28802
Phone: [phone]
EnvironmentalTestIng Solutions,n. Fax: [phone]
July 24, 2020
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 15257
Test Start Date: 07-09-20
Facility Tested: Bald Head Island Utilities
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;
[e-mail]
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,
Oin44Lumner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

.> i - '--'? PO Box 7565
Asheville,NC 28802
Phone: [phone]
fnNrmmem.l Teyb.g Salurlont Inc Fax: [phone]
Effluent Toxicity Report Form-Acute Pass/Fail Date: July 24,2020
Facility: Environmental Chemists, Inc. NPDES It: NC 0085553 Pipe it: 001 County: Brunswick
Bald Head Island Utilities
Laboratory Performing Test: Environmental Testing Solutions,Inc.,Certii,aat,e#_037 Comments
Signature of Operator in Responsible Charge(ORC): /� ����
•
ORC Phone/E-mail: 4/f -4 y or-Cj a Li '/' Protect#: 15257
Signature of Laboratory Supervisor: ! K,,. „ Sample if: 200709.14 ,
e-Mail to: AT [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: 07-08-20 Organism Tested
Collection Time: 0830
Test Start Date: 07-09-20 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
I Grab I Comp, Duration
11 Control 8.01 7.93
X o a pH(S.U.)
ro Treatment 8.03 8.35
x
o f°— t= la
Alkalinity(mg CaCO3/L) 110 .. _
v,
Salinity(Initial/Adjusted)(ppt) 24.8 1.6/25.8 Control 7.7 7.6
Total Residual Chlorine(mg/L) '. `. <0.10 D.O.(mg/L)
Treatment 8.0 7.6
Sample Temp.at Receipt(°C) 2.7 `
Mortality Replicate Mean Mortality
Treatment 1(Control) A BCD
10% 0% 1 0% I 0% i 0.0%
Treatment 2(Exposure) A B CD
Concentration
Tested 90% 0% 0% 0% 0% 0.0%
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 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012,Method 2007.0
Client Environmental Chemists,Inc. NPDES# NC0085553
Facility Bald Head Island Utilities Outfall 001
Project# '1
IS'15 County Brunswick
Test Concentration(Acute Limit) 90% Dilution
mL nil 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 sampie was then diluted to the test concentration with salt synthetic 990 110 1100
wafer.
Feeding Test/nitration or Termination location Randomizing
Hours Date an Sample Number Salt SW Batch
Time Analyst Time Analyst incubator/shelf Template
D •
01-6•1.0 VI op ik A Ds a 06 t'�'-• �.o oloti.tt{ cn•o-1'1.0
24 01 5b1 s
m rtvnaua. v`'go•'2o l lY.i
'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
Initial Final toxicity test.Alkalinity and total residual chlorine performed by the analysts identified on the test
Concentration Analyst �f f' J{�
pH(5.U.) ! tS ( `] specific bench sheets and transcribed to this bench sheet.
ea.01 -1-13 Chemical analyses:
Control Dissolved oxygen(mg/L) qa Parameter Reporting limit Method number Meter
7.4 Serial number
Sail SW 'Salinity(ppt) G of 01 S.U. SM 4500.H•0-2011 Accumet AR20 93312452
74 8 ��.1
'Alkalinity(mg/L CaCO3) Dissolved oxygen rygen 1.0 mg/L SM 4500-0 G•2011 Y51 Model 52CE 1BD704324
'Temperature('C) �t �� q Conductivity 14,9 µmhos/cm SM 2510 B-2011 Accumet AR20 93312452
_
pH(5.D.) D 1
r[J-0q (J�� Salinity 1.0 ppt SM 2520 B.2011 PSI PR030 180104324
Test Dissolved oxygen(mg/L) (] J S/8'0 /`(a Alkalinity 5,0 mg CaCO,/L SM 2320 8.2011 Accumet AR20 93312452
Concentration •Salinity Opt) � /� Total residual
25—,(.' Gy..�f--- chlorine 0.1mg/L ORION97-70.1977 AccumetAB150 92345123
'Temperature(eC) 1—Si.‘ 1 S. L Temperature s.lC SM 7550E-I030 Digital Thermometer klo66LOA'S
100% pH(S.U.)
0f^{ Test Organism information:
(Salinity Dissolved oxygen(mg/L) Organism Source:
B Aquaticlndicators,Inc.
Adjusted) 61
*Salinity(ppt) 2c;.3 Batch(Al Batch Ab):
pH(S.U.)
8.440 Age(1 to 5 days old): 44 -to AA
Dissolved oxygen(mg/L) Date organisms were born: (time
100%
'Salinity(ppt) `l organisms were born between was not SAME AS BATCH DATE ABOVE
,CO provided by supplier)
Conductivity(yamhos/cis
a-79 ,ib ,b Average transfer volume: <0,25 ml.
*Total residual chlorine
LQ•I j Transfer bowl information: pH(S.H.)..11.Q1••Teme.Cci= • n •a
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours Method
Replicate Replicate v lst/A L It3s p
A B C D E F G H t-stator Rank i'1/4, C
0 10 10 10 10 10 10 10 10 is C
Initiation 1-tailed Critical
24 ! ) I p 10 i u l 0 (p 10 10 PASS or FAIL 0P1 c.
Termination
i
Mean survival: I IiQ1. Mean survival: IDOL
Comment codes:d=dead,u=unhealthy,s=stressed
SOP AT41-Revision 5•Exhibit AT41.2

�S}^ ;!'l _ 194
. ! l t
351 Depot Street
Y Asheville.NC 28801
J rr l.1 Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES#: NC0085553 Pipe x 001 County Brunswick
Bald Head Island Purchase order:
Species: Antericamysis(itlysidopsis)ba/tia 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: 00/ OC/71 a,`/
a Date: 7-S-2--'6' Time: 6)- 0 Am Volume collected for testing:
1 Number of containers filled for testing! 0/(P :i
1 Method of transport to laboratory: '-4.4--A4a x- 0.
Comments: i.
ii
if
r
a Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
gPack 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)
j
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE k
Sample collected by:
A 2;iidlet y �,".. — 830
5 l'nm wp.lw< Roe eri rxse
I Relinquished by: Received by:
""cr.f Mr/t �,}sG1)a, ye°+-F-< 7:g 2.P r iJo ���/� s
k:.- Mz f G,/tj
lint M,pn,vc nrr e,xlnn,. /����?
` Relinquished by: Received by: I
II ker_.
7:..;ot— Fedi—p ..
hail slpiuv°o C tblcaml lave ISI.^11 % Iwe !bit aM11 lime
•
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by:Fe 01149
Received at ETS by:
f'�- JUvS
P0nl Sip,unu.' IX.Oral Irmo Rnll Slpr.clm' flue and tuna
ji
Custody seals intact?: l I EJ n Sample temperature upon receipt at ETS CC):I:o Mtl.lnt t7.3 L
Samples received in good condition?: n
Y. Nu Total residual chlorine upon receipt at ETS: L1 Ni
y C, ra (DPO Presence Absensc Indicator,M n1DL 0 10 AL) Htawa. A'".
Tracking number: LUEtV l It�w vi ����
LJ
Project numbcrl 2aSamplc number: eY_ O I!4
Comments:

Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Totting Solutions,Inc. Source: Aquatic Indicators, Inc.
I I I ! 1 I 1 { I I 1 I I I 1 1 1 1 1
0.54 —
Control Limits (± 2 Standard Deviations)
0.52 —
•
0.48 •
_1 - -
dA 0.46 — —
O I I I I I I 1 ! I 1 I 1 l I I 1 1 1 1 l
0.65 I I I I f— I I 1 1 1 1 i i 1 I I I I I
0 0.60 — Warning Limits
00
tzt
0.55 — —
0.50 — •
0.45 — —
0.40 —
1 I 1
Gt.' 0S- pc).l9 pc,- pl.- 0�.0 .0 p" 0619 1.1.L9 p.' OS"19 03.1g O7"Z�DA�O 03 20 ji .05
lti" Ol' 0: 6 Da" 6 6- 0�" 6 0p" 10' 1ti 1'L" 0-- 0: 6' 0:4 606" 01
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 t0=10th percentile of CVs reported nationally by USEPA)
4.1(44Vvelodb
Srm.n

PO Box 7565
Asheville, NC 28802
.______._. .._.___.._._. . Phone: [phone]
` Environmental resting Solutions.inc.
Fax: [phone]
April 24,2020
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 15029
Test Start Date: 04-09-20
Facility Tested: Bald Head Island Utilities
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
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,
Q47
Sumner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037,Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

. ! Page 1 of i
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0
1 Client Environmental Chemists, Inc. NPDES tt NC0085553
Facility Bald Head Island Utilities Outfall 001
Project# 15t)2„5 County Brunswick
1 Test Concentration(Acute Limit) 90% Dilution mt 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 t 1.0°C in a warm water bath.Artificial sea salt was added to the sample to raise the
salinity to 25.0 t 1.0 pet,The sample was then diluted to the test concentration with salt synthetic 990 110 1100
water.
IFeeding Test Initiation or Termination location r Randomizing
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/shelf Template
t '&-O io ` v 4 a5 V. t 62,5 A t E •teC.kov 100,101. 1 I d-l'o8-zu k
24
Termrzu Iron al D'20 (IY 't-
'Test organisms were fed In holding 2 to 5 hours prior to test initiation.Test organisms were not fed during the test.
IChemical Analyses: 'Analyst identified for each day,performed pH and dissolved oxygen measurements only.Temperature
and salinity performed at the time of tact 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 specific bench sheets and transcribed to this bench sheet.
Analyst
pH(S.U.) ll..fs r(f
1.29 7.Fj Chemical analyses:
Control Dissolved oxygen(mg/L) Lq. ail Parameter Reporting limit Method number Meter Serial number
'tt � V
Salt SW 'Salinity(ppt) s�s 1'1.8 ZS,o of 0.1 S.U. SM 4500-h.9.2011 Accumet AR20 93312{52
*Alkalinity(mg/L CaC0)) tt� Dissolved ox
ygen 1.0 mg/L SM 4500.0 G-2031 YSI Model 52CE 180104324
`Temperature('C) -tS.0 1S•1--- Conductivity 14.9 pmhos/cm SM 25106.2011 Attunes AR20 93312452
pH(S.U.) Salinity 1.0 pill SM 25208-2011 YSI PR030 180104324
Dissolved oxygen(mg/L) Alkalinity 5.0 erg CaCO,/L SM 2320 6.2011 Accumet AR20 93312452
■ Test �jJ. ( tT-1.J
■■■ Concentration 'Salinity(pp[) ZJ r,-4- 4 J.1 Total residualchlorine 0.1 mg/L ORION 97-70.1977 Accumet A8250 92349123
*Temperature(C) '-Ls.1 -Ls.'L Temperature 0.1°C SM 255013.2010 Digital Thermometer 1 j0446E6
100% pH(S.U.)
e-OL( Test Organism Information:
(Salinity Dissolved oxygen(mg/L)
Adjusted) B i Organism Source: Aquatic Indicators,Inc.
"Salinity(ppt) .z .e Batch(AI Batch Ab): U+oS'20
1 pH(S.U.)
3 I Age(1 to 5 days olds: 0 n fl-t
Dissolved oxygen(mg/L) Date organisms were born: (time L J
100%
'Salinity(pill) 2-63
organisms were born between was not SAME AS BATCH DATE ABOVE
provided by supplier)
Conductivity(pmhos/cm) Average transfer volume: <0.25 mL
[ 0
I *Total residual chlorine(mg/L) .4 0.40 Transfer bowl information: pH(S.U.(.8,0,i, Temp.MI.is a 0 —
Survival Data (number of living organisms):
IControl Test Concentration Statistics:
Hours Method V 1SJi3l itaSP
Replicate Replicate
IA B C 0 E F G H t-stat or Rank 4U
0 10 10 10 10 10 10 10 10 1-tailed Critical hL
India tier .1 �t C.,n I 24 1 L f 0 10 /0 Qlpvl /4Q DID Qtot( PASS or FAIL Fr S1 L
Terreleat:on .
Mean survival: IOU 7. Mean survival: 5 7,.
•
Comment codes: d=dead,u=unhealthy,s=stressed
SOP AT41•Revision 5•Exhibit AT41.2

4.
r1 itr:ias r It t.._.sr 1 -
4,,,4,-1..,MM Atg....N.._
` ' 351 Depot Street
'16/" Asheville,NC 28801
Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES#: NC0085553 Pipe#: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Anterieamysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
j� Si
Sample information: (to he completed by sample collector)
i
4j Grab sample: Sample location: lili
il Date: �— mod•' �V Time: S Volume collected forts g: rJt �/�
i
I
il
Number of containers filled for testing: /
-
Method of transport to laboratory: 1�
Comments:
1 e rinse sample container w sample before felting. Completely fill the sample container with no air space.
Pack the sample container completely in ice.
Tripl The sample must be<6.0°C upon receipt at the laboratory.
Sample custody: (to be completed by sample collector and facility personnel) +
Sample collected cJ by: /
I O2 SW+L 4-04/4 J yl�/a 0 f:/e 1
Print SignatureDate and time
11 Relinquished by: Received by:
t1ur�..Q*crate" l dcna 7�Y9� l�rc�r✓ (0,/ntCl�+ 4t7 �L��L t� l
Print Signature bale and time Pont Signature Dace and time
i
11 Relinquished by: Received by:
Print Signature Dam and time Pont Signature Dale and time i
..w.--: ...^..`a:."S:`a':]'__�_��2ti��.^-'.LYY3L�1...-._.......1:::=t�i::^Y��YL.•_^-.T..=Y^_�_.'.`�:ar-w�^9G'r.'�.'a.
Sample receipt information: (to be completed by ETS personnel)
Relinquished too ETS
by: Received at ETS by:
oNizo 0-touo
Pout Signature VateaWlima Print Signature Date nal nine
Custody scats intact?: MI - - Sample temperature upon receipt at ETS(°C): I _`
'
Yes No Not used . r
Samples received in good condition?:
Yes No Total residual chlorine upon receipt at ETS: _ F.7
/}, ,I �7 (DPD Presence/Absence Indicator,MDL=0.10 ntg/L) Pr'xrr .them
Tracking number: ./}, )uZ I�t-Ci i 114,
Project number: 6b2C) Sample number: ptOCA O'.(I
Comments:

I
Americamysis v,,, t<:F,,,,,,,,j A:rtz.? Americamysis (Mysidopsis) bahia
.
Acute Reference Toxicant Control Chart
.' EnvtroornentatTostIn95olutlons,Inc. Source: Aquatic Indicators, Inc.
- 1 1 1 1 1 1 I 1 I I I I I i I I I i I
0.54 -
Control Limits (± 2 Standard Deviations) -
0.52 -
•
-
.A 0.46 -
-
Ln
O 1 1 1 1 1 1 1 I 1 1 I 1 1 1 1 I L 1 1 1
0.65
I I I I I I I ( 1 I ! I t I I 1 I 1 I I
z
o 0.60 - Warning Limits
.c _
ca
tzt
0.55 -
0.50 •..n� - • • • •
•
-
0.40 -
fill -
I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Og 11.10 b3 15 06 1L,oa"010$�ALAS"p3A,pa.0-�yA�p6 Oa"Q9 A9"p$.ob"09-1 i0 05-�1.05 1�.05-QyA I Otioa Q3.05 Da.0 '
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 LC50±2 coefficent of variations converted to anti-logarithmic values)
USEPA Warning Limits (mean logarithmic LC50±SA.io converted to anti-logarithmic values,
SA.10= 10th percentile of CVs reported nationally by USEPA)
I
ife,e.eaana
ae,na...d ut
c s R
g

o o
�tr WPM
PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Inc. Fax: [phone]
January 24, 2020
Mr. Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 14801
Test Start Date: 01-09-20
Facility Tested: Bald Head Island Utilities
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 X
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
aridrPcs:
ATF:orms.ATB(cr�,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 S inner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037,Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

7, 0,r l;� Olt PO Box 7565
Asheville, NC 28802
Phone: [phone]
r°wr°°T.nae1 T.,Ing%caution..In<. Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: January 24, 2020
Facility: Environmental Chemists, inc. NPDES#: NC 0085553 Pipe#: 001 County: Brunswick
Bald Head Island Utilities
Laboratory Performing Test: Environmental Testing Solutions, inc.,Certificate 4 037 Comments:
Signature of Operator in Responsible Charge(ORC):
ORC Phone/E-mail: q,0- !_./L.1 - �2(,j4/ Project tt: 14801
Signature of Laboratory Supervisor: )44
4. o..- SampleH: 200109.10
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: 01-08-20 Organism Tested
Collection Time: 0920
Test Start Date: 01-09-20 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration Control 8.04 7.97
c pH (S.U.)
X g Treatment 8.09 8.29
=� x
d h 0 i b
Alkalinity(mg CaCO3/L) 120iiiiMI w
Salinity(initial/Adjusted)(opt) 25.0 1.5/25.1 Control 7.8 7.9
D.O. (mg/L)
Total Residual Chlorine(mg/L)ME <0.10 Treatment 8.1 7.9
Sample Temp.at Receipt(°C) 1y1'��
" � 1.5
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% 0% 0% 0% 0% 0.0%
Note: If mean control mortality exceeds 10%,the test is considered invalid.
Calculate using Arc-Sine Square Root t-Stat/ Rank Sum NA PASS X
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 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0
Client Environmental Chemists, Inc. NPDES it NC0085553
Facility Bald Head Island Utilities Outfa(I 001
Project if St4 g Q l County Brunswick
Test Concentration(Acute Limit) 90% Dilution mL mt. Total volume
Sample was not aerated or treated unless otherwise noted on this form. The sample was warmed to re aration"
p p Sample Dilution water ml
Slot 1 0°C in a warm water bath.Atti(iaal sea salt was added to the sample to rase the salinity to
2S 011 0 opt.The sample was then diluted to the test concentration with salt synthetic water 990 110 1100
Hours Date Feeding Test lnit(ation or Termination Location Randomizing
Time Analyst Time Analyst Incubator/Shelf template Sample Number Salt SW Batch
inan '
n°n meet° 0(aOS 14 1O'1 4` l C. UtitAl'Ct 'MOUND 0t•Oa-Z0
24
t.,ra,.nia, 04'10.10 1e4-1 , A
'Test organisms were fed in holding 2 to 5 hours prior to test initiation.Test organisms were not fed during the test.
Chemical Analyses: Test Organism information:
Initial Final
Concentration Analyst ta
/"r--� Organism Source: Aquatic Indicators,Inc.
pH(S.u.) Batch(Al Batch Ab):�l,b� �.9'� 41-(IS'zo
Control Dissolved oxygen(mgJL �
) e S Age(1 to 5 days old):
Salt SW � �"Q'�
'Salinity(ppt) 25,0
'
"7 •Z Date organisms were born: (time 01,..05.'.d
� organisms were born between is not
'Alkalinity{mg/L CaCO3) 1.0
1 W provided by supplier)
'Temperature(°C) 1.4.Ct. - 6 •0 Average transfer volume: <0.25 ml
pH(S.u.) Q Cy Transfer bowl information: E 1
62,
Dissolved oxygen(mg/L) ..v.�
rest 641 Temperature CC):
Concentration *Salinity(pot)
24'3.5 2.S.3 15. 1
'Temperature('CJ 15.l 15 •o
100% pH(S.U.)
8
(Salinity Dissolved oxygen(mg/L)
Adjusted) 6 I
'Salinity(ppt)
2S°`
! Dissolved oxygen(mg/l)
100% Kt
`Salinity(ppt)
•Analyst identified for each day,performed pH,dissolved oxygen and
conductivity measurements only Temperature and salinity performed at the
Conductivity(µmhos/cm)
2540 time of test initiation or termination by the analyst pet-rotating the tovltity test
'Total residual chlorine(mg/1) 0 I 0 Alkalinity and total residual chlorine performed by the analysts identified on
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 6 H Statistics:
0 10 10 10 10 10 10 10 10 Method t1I14J!°1t. it5SP
initiation
1
t-Stator `�
Rartk Sum N
24 t0 o o rC 10 tp to 10 1 •
Tolled ��
Termination
Crritical
Mean survival: (061_ Mean survival: 100l PASS or �'RSS
FAIL c 1"
Comment codes: d=dead,u=unhealthy,s=stressed
Comments:
SOP AT41-Revision 4-Inhibit ATn1 2

t . 'Z4 . a .e. m aP
(lie
351 Depot Street
(./e Asheville, NC 28801
Phone: [phone]
' Fax: [phone]
Environmental Testing Solutions,Inc. ,an K
Whole Effluent Toxicity Chain—of—Custody Form
Facility: Environmental Chemists, Inc. NPDES I: NC0085553 Pipe#: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Antericamysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
1 Sample information: (to be completed by sample collector) �M.A Jill
l
Grab sample: C� Sample location: Qvt�l/ ( J a
/ li
Date: l 8 `Z Time: •2- Volume collected for testing: G1.e1
Number of containers filled for testing: d fie e
Method of transport to laboratory: .1‘41.�.,,t. ii
Comments: h1
a
Triple rinse sample container with sample before filling. Completely till the sample container with no air space. 11
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory. D
w
Sample custody: x
Sam
P (to be completed by sample collector and facility personnel)
fSample collected by: r
L. rl()fa y I.e.Z. v
il Pent Signature Date and time 4
Relinquished by: ,
Received by:
Ici' -
lPentSinature /030
Date and nntc •r I•i
Print Stgnatt Date and nine
Relinquished by: Received by:
Gre M61 , L s/_,, iir/a..? I �( I Td P— jOl. o62o
i
Pent Signature Date and time Pontignature Date andum: 4
I ont
a.a.a.amrrm;.uarr+avwusa.:..;arx✓v..wc�vswnvamv.,�rxsavcs»s.rrmwancc ii Sample receipt information: (to be completed by ETS personnel)
Relinquished to E s by: Received at ETS by:
� ���. n_ Op oq. r�
C(- `h D�. J /�)G-�— I ,�t.._ I U r./(X�02- I
Print Signature Date and time Ut�� 1
PrattPtmt Signature Date and utne
Custody seals intact?: 0 IN - Sample temperature upon receipt at ETS(°C):
Yes No Not used ) S ' —
Samples received in good condition?: -
Yen No Total residual chlorine upon receipt at ETS: _ ` t, j
43
.1 (DPD PrexnceiAbs nsc Indicator.MDL.=0.10 melt) Pert AbsentTracking number: 3i` 7 I'.G4(4,6301/4"0
Project number:H.8M I Sample number: PI O Di Oetb
Comments:

77771 -° ? Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solulans,Inc. Source: Aquatic Indicators, Inc.
III 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
—J
_ 0.46 - -
! I I l I I I ! ! I 1 1 I I 1 I I l I !
,Vj 0.65 1 1 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
= 0.60 - Warning Limits _
0.55 - -
0.50 - • • • •
-•
•
1 l l 1 I 1 I 1 I l l 1 1 1 1 1 1 1 1 1
�5,1a 1�1a o1 1.6 1L.1$ L31$061$ 1%��19 ��19 'J519 ��19 19 �A 19 �919 06 19 11.19 �a.19 0519 a319 01 9
06' 01' 06' 09' 10' ti1 11: pL pt p3' pd' oS' 06' p1' ob' 09' 10' 11' 11 01
Test date
• 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).
�....a .:_ 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 10= 10th percentile of CVs reported nationally by USEPA)

PO Box 7565
Asheville, NC 28802
ti Phone: [phone]
Environmental Testing solutions,Inc. Fax: [phone]
October 14, 2021
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 16365
Test Start Date: 10-07-21
Facility Tested: Bald Head Island Utilities
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Result
Code Test Procedure, Method Number PASS FAIL
TGE3E Amerkamysis 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,
cil
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

Page 1 of 1
Acute Pass/Fail Whole Effluent ToxicityTest,Species:p es Americamysis bahia
EPA-821-R-02-012, Method 2007.0
Client Environmental Chemists,Inc. NPDES# NC0085553
Facility Bald Head Island Utilities Outfall 001
Project# ltn-YDS County Brunswick
0
Test Concentration(Acute Limit) 90% Dilu
tion mL mi. Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to
preparation: Sample Dilution water mi.25212 1.0°C in a warm water bath.Artificial sea salt was added to the sample to raise the salinity to
25.02 1.0 ppt.The sample was then diluted to the test concentration with salt synthetic water. 990 110 1100
Hours Date reeding Test Initiation or Termination Location RandomlNng
Time Analyst Time Analyst incubator/Shelf Template Sample Number Salt SW Batch
iaw ' nl oo
uoa I0•{1-t1 c yt IT IS y( l L, oftlwt�. -II tool.ii io•06.21 A
�` 4 `
7wrtns±ne 1.0.Oi.11 lift±
'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 Analyst / 1 sheets and transcribed to this bench sheet.
pH(5.U.} 1ria
'v -- _Chemical analyses:
Dissolved oxygen(mg/L)
Control � Parameter Reporting limit Method number Meter Serial number
Salt SW •Salinity(ppt) 24,63 � �
qJ PH 0.1 S.U. SM 4500-H+8-201 t Accumet AR20 43312452
'Alkalinity(man CaCO5) D d ❑issolved oxygen 1.0 met SM 4500.0 G.2018 Y51 Model 52CE 180104324
'Temperature{°C) ZS•5 Conductivity 14,9 Pmhos/cm SM 2510 8.2011 Accumet ARTS 93312452
pH{S.U.) 1)4,03,03 C�-Qt Salinity 1.0 ppt 5M 25208-1011 TSI PR030 180104324
T'l0✓
Dissolved oxygen(mg/L)
Test '1i `-t-T �- Alkalinity 5.0 mg CaCO,Jt SM 23708.2011 Accume:ARM 93312452
Concentration •Sallnity(ppt) 7�' n Total residual
ZS 0 ^-e v chlorine 0.1 mg/L ORION 97.70.1977 Accumet A8250 92349123
*Temperature(°C) 1..S•4 ISA Temperature 0.1°C SM2550E-2030 Digital Thermometer t30tptsditsi;5
100% pH(S.U.) /).k j Test Organism information:
(salinity Dissolved oxygen(mg/I)
Adjusted) 1).6
Organism Source: Aquatic Indicators,Inc.
'Salinity(pot)
Z 1 .0 Batch(Al Batch Ab): 10-04-21
pH(S.U.) 1y frf/i( Age(1 to 5 days old): �-41��5
100% Dissolved oxygen(mg/L) 7 � Date organisms were born: (time 10-03-21 1200 to
`Salinity{ppt) (/ � organisms were born between was not
• 7 provided by supplier) 10-04-21 1130
Conductivity(µmhos/cm) gQ7D Average transfer volume: <0.25 nil
'Total residual chlorine(mg/L) <0.tO Transfer bowl information:
RN(SM.).-•)sCA Temp.{'C)' -LC.C]
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours - Method
Replicate Replicate \l1,s/Pi,- I .ASP
A B C 0 E F G H t-stat or Rank NC—
0 10 10 10 10 10 10 10 10
1-tailed Critical
Initiation
24 ID (0 tb Lu 1 Q 10 l0 10 PASS or FAIL PMS
Termination
Mean survival: 1001. Mean survival: COO7.
Comment codes: d=dead,u=unhealthy,s=stressed
SOP AT41-Revision 5-Exhibit AT41.2

..t
` ;s. :y{,yam er . p ' C
� I 1..::.:.(: Li 351 Depot Street
I.:
•
t, /Lj C) Asheville,NC 28801
Phone: [phone]
Pax: [phone]
' Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES 4: NCOO8S553 Pipe 4: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Americamysis(Mysidopsis)baltia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
Sample information: (to be completed by sample collector) i
Grab sample: /'--- 1 Sample location: oaf env f�*t//
Date: /D-6 - Time: 3 Q Volume collected for testing p-e „ n a e
il ilNumber of containers filled for testing 0I?'€
Method of transport to laboratory e c_4... /f
ti X
dComments: 11 t
i s
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
1; Pack the sample container completely in ice. The sample must be<6,0°C upon receipt at the laboratory. i{
ti
,ample 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
11 Sample collected by:
h Ili
4 Pnnl %rptatk;rc III,and(Mc
II Relinquished by: Received by:
e✓wrc........ ,ri I a.sf 3.-/ /� / i
L _ /�M7 y.. /o'jO �rrc tvic i,t.-t ,(may ��`b/
M 1 / d /.�15Gt" 1
i tr,n, N,E,u,We vale and l,me IYrm .,IF,,,, Iklt snd male ,
I Relinquished by:
q Received by: ;i
, k,ec_ii& 1i ‘---� 4ye,„2.23. ,1 t CLLTh la Opeu
NM SI(eY1We Dm<.Nl none Rani S.p. W2 I.ble.Vine
l
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
Pint Ili rsl.x Dslr urn woe I'anl �.p:..irc Zblet..1 fire
Custody seals intact?: r---1 l Sample temperature upon receipt at ETS('Cl:
Y. No Not lard -b, +t'
Samples received in goad condition?: 1I
Y. No Total residual chlorine upon receipt at ETS: J ' I
42 6132 (IPD Presen ,v, ,,,:ce<Absense Ind,cator MDL.0 10 mg/1.) l' , Ai
-- Tracking number: ' �� J `��j�
Project number:r A3 Sanipic number: RI I 1 0Cr4.0-
' Comments:

7770 f.laQ,NA iT17 Americamysis (Mysidopsis) bahia
I Acute Reference Toxicant Control Chart
Environmental Totting Solutions,Inc. Source: Aquatic Indicators, Inc.
I I I I 1 1 I I I I I I [ I
0.54 — _
Control Limits (± 2 Standard Deviations)
0.52 —
0.50 • •-p...,w •w: •
• • • • • • ._a•.: - i -
0.48 — ,> .. • _.- _._ w -, . .,. _ ._ • • —
J _
0.46 —
I I 1 I I I l I 1 l 1 I I I ! 1 I ! —
0.65
I IIIIIIIIIIIII I I 1 ! r !
3 -
0 0.60 — Warning Limits
-c
oh -
0.55 — —
• • •
L
1 I I I 1 1_ I I _1 1 I I 1 I 1 I I 1 I I -
0303 0aAI'15 05 Ob.Oti 01.61 06 1.v09.0 10 06 ZO 03 i sis O 05 020 03.01 06 OS Ua o6Ag U1 SS 0a03 1a i�.05 T1
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).
-- .•--•-.--.w Central Tendency(mean logarithmic LCo 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±5A to converted to anti-logarithmic values,
SA 10=10th percentile of CVs reported nationally by USEPA)
(
Meted Old
V

2 - DU)3q
l
PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions.Inc Fax: [phone]
April 19, 2021
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 15909
Test Start Date: 04-08-21
Facility Tested: Bald Head Island Utilities
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,
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

Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0
Client Environmental Chemists,Inc. NPDES# NC0085553
Facility Bald Head Island Utilities Outfall 001
Project it t.S°o`. County Brunswick
Test Concentration(Acute Limit) 90%
Dilution nit mL Total volume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to
11
25.0±1.0°C Ina warm water bath.Artificial sea salt was added to the sample to raise the salinity to preparation: Sample Dilution water mL
25.0#1.0 ppt.The sample was then diluted to the test concentration with sat synthetic water.
990 110 1100
Hours Date reeding T Test Initiation or Termination Location Randomizing
Time Analyst Time Analyst Incubator/shelf Template Sample Number Salt SW Batch
0 a
'no.r°n 04-0(•Il O4O t L2-L t �1 K
24 r, l"L mitt�o.>7 LC OLi Off. t'1 o`4-0S-1(
•Test organisms were led in holding 2 to S hours prior to test initiation.Test organisms were And during the test
Chemical Analyses: •Analyst Identified for each day,performed pH and dissolved oxygen measurements only.Temperature
Initial and salinity performed at the time of test initiation or termination by she analyst performing the toxicity
Final test Alkalinity and total residual chlorine performed by the analysts Identified on the test specific bench
Concentration K Analyst ,., sheets and transcribed to this bench sheet.
pH(S.U.)
7.80 4,147 Chemical analyses:
Dissolved oxygen(mg/L) j
Control .N
Parameter Reporting limit Method number Meter
Serial number
5att5w *Salinity(pp!)
.24.4 •-LS••._ pll 0.1 5.U. 5M 4500-H.8.2011 Accumet AR2O 93312452
•Alkalinity{mg/t CaCO3) (`"t�
° p 0 Dissolved oxygen 1.0 mg/1 Sb1 4500.0 G-20I1 YSI Model 52CE 180104324
"Temperature("CI
-Lc•0 'LS•'L— Conductivity 14.9 pmhos/cm SM25108.2011 Accumet AR20 93312452
pH(S,U.) "^}a
I l5 ai ' Salinity 1,0 ppt SM 25208-2011 PSI PR030
"� L180304324
Dissolved oxygen(mg/L)
Alkalinity 5.0 mg CaC01/L SM,23208-2011 Accumet AR20 93312452
Test f_O "4.
.Concentration •581inity(ppt) 1 Total residual,-'� AS.,'\ chlorine 0,1 mg/L ORION 97.70.1977 Accumer A8250 92349I23
`Temperature et)
15.0 15,.` Temperature 0.1°C SM 25508.2010 DI ital Thermometer 1
100% PH(S.U.)
g 30t,t��16 ES
1.4N Test Organism Information:
(Salinity Dissolved oxygen(mg/L)
Adjusted) &•p Organism Source: Aquatic Indicators,inc.
*Salinity(ppQ t
Z1• Batch(Al Batch Ab): 04-05-21
1 pH(5-U.) g •��
10 Age(1 to 5 days old): 3_kk rilA`tS
100% Dissolved oxygen{mg/L}
1,''\ Date organisms were born: (time 04-04-21 1200 to
*Salinity(ppt} organisms were born between was not
I provided by supplier) 04.05-21 1130
Conductivity(pmhos/cm)
i0 Average transfer volume: <0,25 mi.
*Total residual chlorine(mg/L) l',
�1.1 - Transfer bowl Information: pll(S.D.).--( 8C� Temp.CC). -S-0
Survival Data (number of living organisms):
Control Test Concentration statistics:
Hours
Replicate Replicate Method v 4St1At- l NS P
-
A B C 0 E F G H
t-stator Rank a--)`
0 10 i0 10 10 10 10
Initiation 10 10 1-tailed Critical
24 � � iC 10 ID S Ss.t `�e� `'tom C
Termination PASS or FAIL rC'F�LI�
Mean survival: (00 l Mean survival: 4S 7_
Comment coder d=dead,u=unhealthy,s=stressed
SOP AT41•Revlsion 5•Eohlbit AT41.2

351 Depot Street
Asheville,NC 28801
licC, Phone: [phone]
Fax: [phone]
kJ
Environmental Testing Solutions.Inc. ,
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES f: NCO085553 Pipe/I: 001 County: Brunswick
Bald i-Iead Island Purchase order:
Species: Ainericanrysis(Mysidopris)baifia Effluent dilution 90°/0
Test type: 24-hour Pass/Fail Acute Parameter code. TGE3E
Sample information: (to
.,:::..2��",:,•.>�.�..�ar»>�:.,,� �;.,,..:•..�:,+�., ,.,.,...,..
ili p (to be completed by sample collector) .sa,. �._ .�_r. x�.r of
ll
11 Grab sample: Sample location: 00/ 0171-5►ell s
fit
Date: y` 7^�-I Time: 8-2 0 41 Volume collected for testing: (,'}n e /le0
Number of containers tilled for testing: Q 17P
Method of transport to laboratory c.,[,,, / `�,y( 1
Comments ` 1 +
1
ii Triple rinse sample container with sample before filling. Completely fill the sample container with no air space. I
Pack the sample container completely in ice. The sample must he<6.0°C upon receipt at the laboratory. s
.Sample custody: (to be completed by sample collector and facility petsonnel)
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE
1 Sample collected by:
PIM
a�1t.t,.. In,.,nl t,rt,, s
Relinquished by: Received by:
t Ar6rl.nrli .rs,.tai
jI IYty ,,,—r i htcarlikro, tnrt
9 ��"'°�' �,•,.,��,,.,
9 /,, it
Relinquished by: Received by:
I'nrt \r IJ,ui Jttm. et SsguY.• DJ,tnl IJ,
...,y„�«.a.�,.a..u.�._.�..............,,.-x+.....a_.....-.�.�, .._...-.....'....�.....,.n..�.ua.,.�.N.d.+.ur ...,.—..�..�-.n......n....s.<.uv..,..�.-..w...es.�.mrn+rnu�i...x..._+.a�.��a�a. .....:,.�(
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: �( Received at ETS by:
�� 0( '06Wqtog;7 of�l)j
^tvt ST.zoPuc thtr am:Woe t'nnt Siyraftrc :)etc and lien.
Custody seals intact?. l L._.J Sample temperature upon receipt at ETS(°C): f✓
Yet No Not u...
N.
Samples received in good condition?: 11
Y.t No Total residual chlorine upon receipt at ETS: I I
— 1 cis(0 t�,.,�,es (DPD Presence Absense Indicator,NIDL 0 10 mg/L) r^"*'t Ahw.:t
Tracking number: ^� )[�J!—lj�J] �/�p �p
Project number:t-1`1V ' Sample number: at( ved2-
Comments:

c.° t ,. y.;:,7-• rM 71 Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
—4) Environmental Testing Solutions.Mc. Source: Aquatic Indicators, Inc.
I- I I I I I I I i 1 I 1 1 1 1 1 1 1 I 1
0.54 - -
Control Limits (± 2 Standard Deviations)
0.52 -
0.50
•
_I
113. 0.46 - -
0 I I I I I I I I I I I L I I 1 I 1 I I I
IA
J 0.65 III 1 I I I I 1 I I I I I I I I I I i
L
o 0.60 - Warning Limits
.IC
00
nr
0.55 -
•
L • •
0.45 - -
0.40 -
I I I I I I i I 1 I L I I 1 I t 1 I I I
i1:L9 Oa 19.519 0319 1 7,0 a 10 310 1,20 SILO 1.0 1.10 20 1.0 :LO :,0 :LO =L1 1Z 1.1. 11
0 0 0 ,0 0 ,0 ,0 0 1} S5 06 0'� 04. 4 l 1 6
9 0 1 1L 1 1 0 0 0 0
0 1 1 1 0 O 03 O OS O6 01 0a O9 10 11 1Z 01 OZ 03 00.
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 ToxCaic).
---_-..— Central Tendency(mean logarithmic LC50 converted to anti-logarithmic values)
— -...-, ..-. Control Limits (mean logarithmic LCso±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 1.C50±SA 10 converted to anti-logarithmic values,
SA to=10th percentile of CVs reported nationally by USEPA)
1
Mn m nn.,

2 oin89 (/
PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Salutlons,Inc Fax: [phone]
January 18, 2021
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 15672
Test Start Date: 01-07-21
Facility Tested: Bald Head Island Utilities
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Test Procedure, Method Number Result
Code PASS FAIL
Americamysis Pass/Fail Acute Toxicity Test
TGE3E X •
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 S mner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037, Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012, Method 2007.0
Client Environmental Chemists, Inc. NPDES It NC0085553
Facility Bald Head Island Utilities Outfall 001
Project# tSLi_t1._ County Brunswick
Test Concentration(Acute Limit) 90%
Dilution mL mL Totatvolume
Sample was not aerated or treated unless otherwise noted on this form.The sample was warmed to
preparation: Sample Dilution water m!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 t 1.0 opt.The sample was then diluted to the tett concentration with salt synthetic water. 990 110
zloo
Hours Date Feeding Test initiation or Termination location Randomizing
Time Analyst Time Analyst Incubator/Shelf Template Sample Number Salt SW Babcl�t1
•
H24:°n nk al•1t bitSW l2n ti .-lal-f —Li 61a1.tL e orzltoVtit
to,r, Lion 0k-Ot-1 t t2 to X`
•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.A!Falinity and total residual chlorine performed by the analysts identified on the test specific bench
YQ 01.6' f
pH(S.U.) l 1�( sheets and Transcribed to this bench sheet.
Concentration Analyst - Q 1
X7,75 -L-i i Chemical analyses:
oxygen Dissolved (mg/L) 9 , t
Control 7. Parameter Reporting limit Method number Meter Serial number
Salt sw 'Salinity(ppt) pT•87..t.2 t `' ,
Zl-8 x !� pH 0.1 S.U. SM 4500-Ha8-2011 Accumet AR20 93312452
'Alkalinity(mg/t CaCO3)
b� Dissolved oxygen 1.0 mg/L SM 4500.0 G-2011 YSi Model 52CE 180104324
'Temperature(°C) IS_ 15.2 Conductivity 14.9 pmhos/cm SM 25108-2011 Accumet AR20 93312452
pH(S.U.) 7,64 i•9 Salinity 1.0 opt SM 2520 8•2011 WSi PRO30 180104324
Dissolved oxygen(mg/L) �f
Test V. o 1•te Allrallnity 5.0 mg CaCOiL SM 2320 8-2011 Accumet AR20 93312452
Concentration *Salinity(Pet) -y` Total residual —
�••�• 24•']a, chlorine 0.1 mg/! ORION 97-70.1977 Accumet A9250 92349121
'Temperature(°C)
•b ..S.1— Temperature 0.1°c SM 25508-2010 Digital Thermometer
11066Ss6415
pH 15.U.1
7 C23 Test Organism Information:
(Salinity Dissolved oxygen(mg/L) -, p
Adjusted) !, ( Organism Source: Aquatic Indicators,Inc.
"Salinity Ippt) - Batch(Al Batch Ab):
��! Pis Nb 0x-ot•IA
pH(S.U,)
7.97 Age{1to5daysold): .6NAf
106% Dissolved oxygen(rng/t) 75
Date organisms were born: (time Ol'Qt 11 VA-6 0 7-0
'Salinity(ppt) L.
•y! organisms were born between was not 4AiKE—BAT L.H DAItAHucEk ts•ct•t%
( provided by supplier) 01• ti.1.1 t13 N
Conductivity(pmhos/cm) RH10 Average transfer volume:
0.25 mL
"Total residual chlorine(mg/L)
4 0.1 b Transfer bowl information: pH(s.u.)=1,cii Temp.CC),. •1,,c•1
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours - Method
Replicate Replicate �4SJAf� ( �
A B C D E F G H i3�
t-stat or Rank
0 10 10 10 10 10 10 10 10
initiation 1-tailed Critical
24 (0 (0 (p i0 to (D (C fp PASS or FAIL ICI ASS
Termination
Mean survival: (007_ Mean survival: 100 1-
Comment codes: d=dead,u=unhealthy,s=stressed t
SOP AT41-Revision S.Fxhih,t AT41 7

•
0 -? 'Cl:i:::i:zi' f t�1':$IT?i.,'�'.,7'11 .:;'.;::!y:i4'1 �(/
,,� 351 Depot Street
i 4 •
pC �r
Asheville,NC 28801
/ Phone: [phone]
Fax: [phone]
Environmental Test ing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists, Inc. NPDES#: NC0085553 Pipe#: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Americamysis(Mysidopsis)bahia Effluent dilution: 90°/a
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
Ri
Sample information: (to be completed by sample collector)
Grab sample: • Sample location ONQu�4
Date: f- 0- . --1 Time: Volume collected c for
o testing / ,,//an
Number of containers filled for testing:c� ay)e
i Method of transport to laboratory:
Comments:
d
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space.
R Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
11
.mple custody: (to be completed by sample collector and facility personnel)
ids y
i BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE
Sample collected by: }s
,A T h a f} 71z /_5--Z/ H
r,1 „na c talc and nmv
�j Relinquished by: Received by; I
Ya 7A�/✓� H PA /wrcJ`
2: L.„
,- > A" z3 0 A^,i 0 4r�t}tea vr— LC 'i<' `1 b j3<Sc)I'nnt `,prulun I]xe anJ,:nK /..ry S �^�"
It,nt S,pwlu,c Wo tirrJntn,
G
Relinquished by: Received by:
//4/1
li dt)m
Neen.mac (Ate am/umc Ittnl .Sipna)wc nae anJ un,<
il
,•..:;:. ..:.a...._raassea...,tx.,rzr;..:rrrm�-u:.._»x:wr.,:w.-,nnnx.ss-_..-«..w,.a„ny,xi.,.,
Sample receipt information: (to be completed by ETS personnel)
Relinquishhe�ed to ETS by: Received at ETS by:
re
• J(�)y
lhnl Szitmure Ow and lame it,::i .SWISIWc bale and 114,c
Custody seals intact?: Sample temperature upon receipt at ETS(°C):
`Its NJ, K a,:ml 3--Tl I
Samples received in good condition?: El I //
Y: Total residual chlorine upon receipt at ETS: _ I f+
(DPD Presence Absence Indicator,MMDL 0 10 m5IL) I'"'a" '''''''
Tracking number: e)1si-7jtir QICO
Project number:1 Z Sample number: 4,10 t(S,12,
Comments:

1:^'x,::,i--1.77-77''. : Americamysis (Mysidopsis) Bahia
Acute Reference Toxicant Control Chart
Environmental Testing Solutions,Inc, Source: Aquatic Indicators, Inc.
1 1 I I 1 I 1 1 1 I I 1 I I I 1 1 1 1 I
0.54 -
Control Limits (± 2 Standard Deviations) -
0.52 -
• •
0.50 -
• •• • • • -
... ........ •
- • • • • • • • • I • -
Y 0.48 - • •
..:i -
40 0.46 - -
In
0 I l 1 I 1 I 1 1 I 1 I 1 I I 1 I 1 1 1 I
.�j 0.65 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
L.
s 0.60 - Warning Limits -
0o
0.55 -
-
0.50 - • •
0.45
-
0.40 -
,
1 I I I I i i i I 1 I I I I 1 I 1 i 1 I
pro Q�p1 49 O$O6 p9 11 10 O�11V 11' OV 0tisp.' 9. oaA1 09.05 0$ Q1 Al 0$11 dr 1C 06" 03 11: 0-pg�1
Test date
• 48-hour LCS0=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,
ISA 10=10th percentile of CVs reported nationally by USEPA)
ltratted I:

tr
- a,/ed /0-//- 2
22-- ti 41oO
` . PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions,Int. Fax: [phone]
July 21, 2022
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 17145
Test Start Date: 07-13-22
Facility Tested: Bald Head Island Utilities
Enclosed are toxicity test results for samples received by Environmental Testing Solutions Inc.
Parameter Result
Code Test Procedure, Method Number
PASS FAIL
TGE3E Americvmysis Pass/Fail Acute Toxicity Test X 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(u�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.7.777.1 PO Box 7565
Asheville, NC 28802
Phone: [phone]
t""'°"""""'�efngSoC UssU Fax: [phone]
Effluent Toxicity Report Form -Acute Pass/Fail Date: July 21, 2022
Facility: Environmental Chemists, Inc. NPDES#: NC 0085553 Pipe a: 001 County: Brunswick
Bald Head Island Utilities
Laboratory Performing Test: Environmental Testing Solutions, Inc.,Certificate#037 Comments
Signature of Operator in Responsible Charge(ORC):
ORC Phone/E-mail: 7/0_ _.y7/R i;rt[&aYQV;'let c /; Project it: 17145
Signature of Laboratory Supervisor: r ry�.�p .^ Sample It: 220713.16
r 1
e-Mail to: ATF [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: 07-12-22 Organism Tested
Collection Time: 0900
Test Start Date: 07-13-22 Americamysis(Mysidopsis)bahia
Sample/Type/Duration
Grab Comp. Duration Control 7.79 7.85
X o pH(S.U.)
Treatment 7.93 8.27
o
Alkalinity(mg CaCO3/L) in
99Co w
Salinity(Initial/Adjusted)(ppt) 25.1 1.9/25.7 Control 7.9 7.7
Total Residual Chlorine(mg/L) <0.10 D.O.(mgf L)
Treatment 7.8 7.6
Sample Temp.at Receipt(°C) 1.2
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
Tested 90% 0% 0% 0% 0% 0.0%
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.
lithe 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 Environmental Chemists, Inc. NPDES# NC0085553
Facility Bald Head Island Utilities outfall 001
Project# 1 11AS County Brunswick
Test Concentration(Acute Limit) 90% Dilution mi. mL Total volume
Sample war not aerated or treated unless otherwise noted on this form.The sample was warmed to preparation: Sample Dilution water ml.
25.021.0°C in a warm water bath.Artificial sea salt was added to the sample to raise the salinity to
25.0 t 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/Sheri Template
0 ' ASOD-r �.l4*-1 1.1.010). t(7 �-l-Ol-'1.16
i,ni.dan U'1.t3° - 1100 , a I�00 Al �-- �}eueNa
24
t.marud., 0 1.14.17/' \-1..5/ 6,
'Test organisms were fed In holding 2 to 5 hours prior to test initatfon.Test organisms were not led 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 test,
Initial final Altialtnity and total residual chlorine performed by the analysts identified on the test specific bench sheets
{ and transcribed so this bench sheet.
Concentration Analyst /G k y
pH(5.u.)
'7.W( ,6j Chemical analyses:
Dissolved oxygen(mOiL) ? G �� Parameter Reporting limit Method number Meter Serial number
Control
Salt SW *Salinity(ppt) 2C. ( pH 0.1 S.V. SM 4500-H.84011 Accumet AR20 93312452
'Alkalinity(mgJL CaCO,) ACi Dissolved oxygen 1.0 mg(L SM 4500-0G-2016 Y51 Model 52CE I80104324
'Temperature CC) 1-S°t 1S-, Conductivity 14,9µmhos/cm SM 2510 8-2011 AccumetAR20 93312452
pH(S.I,.) 74 3 0 2n' Salinity 1-0 ppt SM 2520 8.2011 Y51 PRO30 180104324
Dissolved oxygen(met)rest 7. 1`'� (p akaunlry 5.0 mg Caco(L SM 2320 0.2011 Accumet AR20 93312452
ConctnUaUon *Salinity(ppt) Total residual chlorine 0.1 mg/L ORION 97.70-1977 Accumet A10250 92349123
ZS.S 'lS-k
'Temperature 1°C) 1.4.61 °I 1_.. Temperature 0.1°C SM 25503.2010 Digital Thermometer t.xlab'.l64s
100% pH(S.U.) ? 9 Test Organism information:
(Salinity Dissolved oxygen 1mg/Il Organism Source: Aquatic Indicators,Inc.
Ad(ustedi '.s
'Salinity(ppt) zS 3— Batch(Al Batch Ab): 07-11-22
pH(Su.) g ? 7 Age(1 to 5 days old): 1-N q‘1s
Dissolved oxygen(mgJL)lD100% g.O Date organisms were born: (time 07-10-22 1200 to
'Salinity(ppt) organisms were born between was not
l'� provided by supplier) 07-11-22 1130
Conductivity(pmhos/cm) '5-
2 1 Average transfer volume: c 0.25 mL
'Total residual chlorine(mgJL) 40./U Transfer bowl Information: 1,$� l
p}{IS.U.Ia Temp.(°CJ= Z •
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours - Method
Replicate Replicate v1S11lil_ tkg)i)
A 0 C D 1 E F G H t-stat or Rank roc
0 10 10 10 10 10 10 10 10
Initiation i tailed Critical tJC
24 l ICD / 0 /0 i 0 1 0 / 0 1 0 'O PASS or FAIL PASc
Termination
Mean survival: (t1Q 7_ Mean survival: lisp?.
Comment codes: d=dead,u=unhealthy,s=stressed
SOP A741-Revision 5-Exhibit AT41.2

•
1..;:., 351 Depot Street
4 /", Asheville,NC 28801
) u I, Phone: [phone]
fax: (82S)350-9368
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES ti: NC0085553 Pipe#: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Anterirainysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
NSample information: (to be completed by sample collector)P.
1
I Grab sample: Sample location: 00 I O IAa-ail I 1 °
Date: 12—2 z Time:
7 - q.U 0Volume collected for testing. 1 9P no O ti
Number of containers filled for testing. )
1 Method of transport to laboratory: ( _
Comments: a
Triple rinse sample container with sample before filling. Completely lilt 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
j s
it
Sample custody: (to be completed by.ample collector and facility personnel)
1 BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE
Sample collected by:
Ian J Car'C 0 tilt, 7•12-22 fiti
q 11W S0......e Due and law i
I Relinquished by: Received by: l 1
Ca
VIt/yo ?/J441� 1
O.n L1�r 1 CO �p,., `arucr 7-(7- �2 !U to �►r"� �/' 1�'�- N wrr NM bu+'i• t)YeOfdlm¢ @.n. f"^" ,,1,., !„•e.ndL„.
Relinqutshed by: Received by: i
1
11.w 4eimo,e, tale aml["IK Trot rig.. tale lad lw"c i
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
j.-Q'r� CO 4% G� 4 L.e A/.'2' delve
11m1 ,lrywlue nam.:.S um. rant 5rrewart thin and l.Ine
Custody seals intact?: I--I 1=r I I Sample temperature upon receipt at ETS(°C):
Ya N. r~I toed 1.2 -
Samples received in good condition?:17 n
Ye. No Total residual chlorine upon receipt at ETS:
(DPD Presence Absense Indicator,MIX 0 IA mg/1.) keel ANeet
Tracking number:
Project number:lilt-IS-Sample number: 220t
a3.I
Comments:

0 mon „-7,517.7 Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Environmental TostInca Solutions.Inc. Source: Aquatic Indicators, Inc.
I I I I 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I
0.58 -
0.56 - Control Limits (± 2 Standard Deviations)
•
0.54 - • • • • -
0.52 -
•
0.46 -
tbo 0.44
1 I 1 1 I I 1 1 I 1 1 1 1 I 1 1 1 1 1 I
J 0.65 i ( 1 1 I I 1 1 1 I 1 1 1 i I I 1 I 1 1
L _
° 0.60 - Warning Limits •
•
izt
0.55 - • •
• • • •
•
0.45 - __„.. . ..
0.40 - - . .. ..w._
1 1 1 1 1 1_ 1 1 1 1 1 1 1 1 1 1 1 1 1
oSsp-06.0g�0�,3"08 03*0914 10AS 11 Otii2.0�01.0a��Z.08 021.6�3.0$'�3.2ti Da.05 �AS�pA.01�.19 05.03�6 01 prt Al:�2
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 LC56±2 coefficent of variations converted to anti-logarithmic values)
•• • USEPA Warning Limits (mean logarithmic LC50±5A 30 converted to anti-logarithmic values,
SA.�O=10tt'percentile of CVs reported nationally by USEPA)

2 2 - 0-121 �
PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental Testing Solutions.Inc. Fax: [phone]
April 15,2022
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 16889
Test Start Date: 04-07-22
Facility Tested: Bald Head Island Utilities
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 A •
Alt 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.ATBc ncdenr.ciov
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.
SSincceeLrel ,
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

• Page l of I.
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-02-012,Method 2007.0
Client Environmental Chemists, Inc. NPDES li NC0085553
Facility Bald Head Island Utilities Outfall 001
Project it It, eq County Brunswick
Test Concentration(Acute limit) 90% Dilution mL mL Total volume
Sample was not aerated or treated unless otherwise noted en this torm.The sample was warmed to preparation: Sample Dilution water ml
15.021.0'C In a warm water bath,Artificial sea salt was added to the sample to raise the salinity to
25.0 2 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 Randomising
Hours Date - Sample Number Salt SW Batch
Time Analyst Time Analyst incubator/shelf Template
.4„iiia cal.61.11- • 0$05
t(P O A 1 n W tkt `L'-!Atk(a. (1 OA.-0 --1.-L.
24 IArennin rim• Q`l 0�'LZ- (a'�a
'Test organisms were fed in holding 2 to 5 hours prior to test Initiation,Test organisms were not fed during the test.
Chemical Analyses: .Analytt Identified far 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 test.
Initial Final Alkalinity and total residual chlorine performed by the analysts identified on the test specific bench sheets
Concentration Z\i / a/ _ and transcribed to this bench sheet.
Analyst "V �/V
pH(S.u.) l 1S AO Chemical analyses:
Dissolved oxygen(mg/L) /J� • La'], Parameter Reporting limit Method number Meter Serial number
Control 7 'J
Salt SW 'Salinity(ppt) 2 C Zs.' pH 0.1 S.U. SM 4500-lea 8.2011 Accumet AR20 93312452
*Alkalinity(mg/LCaCO)) t 0 Dissolved oxygen 1.0 mill 5M4500-0G-2016 Y51 Model 52CE 180104324
'Temperature lull -tS t� I:)U -L Conductivity 14.9pmhas/cm 5M25108.2011 AccumetAR20 93312452
pH(5.U.) y r/� 13`n Salinity 1.0 ppt 5142520 PROM-2011 YSI PROM 180104324
Dissolved oxygen(mg/i) 1.1 } 3 Atkallnity 5.0 mg CaCOd/L SM 2320 0-2011 Accumet At120 93312452
Test U qq.'++t
Concentration 'Salinity(ppt) rg .lit ?41.6 Total residual chlorine 0.1 met ORION 97-70-1977 Accumet AB2S0 92349123
°Temperature('C) 'lc-9-s -1-ca.-L Temperature o.1'c 5n125508.2010 Digital Thermometer t-5 t{I
pHIS.U.l
100% gr) Test Organism Information:
(salinity Dissolved oxygen(rttg/L) -,x5 Organism Source: Aquatic Indicators,Inc.
Adjusted)
'Salinity(ppt) —1-4'S Batch(Al Batch Ab): 04-04-22
pH IS.U.) C,. tl —. Age(1 to 5 days old): .4 DAs S
100% Dissolved oxygen(mg/l) 1 5 Date organisms were born: (time 04-03-22 1200 to
*Salinity Opt) , 5 organisms were born between was not 04-04-22 1130
provided by supplier)
Conductivity(pmhos/cm) Average transfer volume: <0.25 ml 0,
'Total residual chlorine(mg/L) 0.10 Transfer bowl information: off(s.u.j= 4., Ternp.(°c)= ,AS{'1,aC1
Survival Data (number of living organisms):
Control Test Concentration Statistics:
Hours Method q 1SJAt (I•15 0
Replicate Replicate
A B C D E F 0 H t-stat or Rank t (_
0 10 10 10 10 10 10 10 10
1-tailed Critical �
Initiation0(..
O (
24 ( (� 6 (v ottd,,, 10 10 I PASS or FAIL 1 � C
Termination
Mean survival: l 001- Mean survival: CO_ S 7-
Comment codes:d=dead,u=unhealthy,s=stressed •
50P AT41-Revision 5-Eahiblt AT41.2

..-- �kLL�)llL.i#4� �,;�'y,,:'�Csit!;z!i'-f1 !<''':ri�''3 �µ is� /
1 ::a ::.
4 351 Depot Street
0 ` Asheville,NC 28801
r. � Phone: [phone]
Fax: [phone]
Environmental Testing Solutions,Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPUES#: NC0085553 Pipe II: 001 County: Brunswick
Bald Head Island Purchase order:
Species: Americam}psis(Mysidopsis)bahie 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: 00 / O Crl{�j
iii Date: - 6.-- ' Time: Volume collected for testing an C) //o'?
ll
it Number of containers tilled for testing Q/'}P e
Method of transport to laboratory. cams.
( Comments:
li
f
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space. u
it Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory.
4
it
Sample custody: (to be completed by sample collector and facility personnel)
i
BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE 1
Sample collected by:
,III Nay-h}a vs 7-1.
• L. n llfo,y -- ' ,.. - ,�' ->-
Uin.: s.„—, oax aul nm.
Relinquished by: Received by:
A!h-rhu.1 -7-t-fk-- Lr_.C.' -F. ,
..n oli'-•7 ,,:...--../ /o`_? 16it�elM/ 4•°4 ,1-2 %.a.-r—• r
h::,: oao.a J tutern Poet tin:_n.1:,n.t i
Relinquished by: Received by:
14..t e o. ..7 G�'k+4-� yIj „:./Tr--I f e C O�•LL�'LL
h:M c,„...va• Me Jut ttru 1'nrt G y.:rse !tee a nr1titz II
Sample receipt information: (to be completed by ETS personnel)
Relinquished to EIS by: Received me ETS by:
1'nM styuu;n Me end lent rent !Vulture Ihte nru Mee
ur
Custody seals intact?: n n Sample temperature upon receipt at ETS(°C):
Yet NA. NM aged r-j c
Samples received in good condition's n
Ya No Total residual chlorine upon receipt at ETS: 1
t (DPD Presence Absense Indicamr,MM.-0 10 mW.) ''n"'' '""""'
Tracking number: 1V('C -7
Project number:* 1Santplc number:22QL161*1
1-
Comments:

•
Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
Envltonmenni listing Solutions,Inc. Source: Aquatic Indicators, Inc.
i I I I I I 1 I 1 1 I 1 I IF I 1 I 1 I
0.58 - —
•
0.56 - Control Limits (± 2 Standard Deviations)
•
0.54 - • • -
0.52 - -
•
.
0.50 -
U -
0.46 -- .,_ . ... ..... :....
0.44 -
u'f
I I 1 1 I 1 1 I 1 1 1 1 1 I 1 I 1 1 1 l
0.65 I I 1 1 1 1 1 1 1 1 I 1 I 1 i 1 1 I I I
L _
0 0.60 - Warning Limits
oa •
izt 0.55 - • -
:... •
•
• • • • • • • -
0.45 -
0.40 ...
1 l 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
OS Ll 11'OZ 21 06.11 Oa.21 Oa!1 �,y L1 03 11 L1 t, 0. o�.L1 et. Oa.LZ�6 LZ O$LZ L11Z 051 tit, OI'L2
01' 01 03 ON- 0 O6" 01 0$ 09" 1p• 11' 11• ,A 0'L 01 03. 0.� ON Oa Oa.
Test date
• 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 LCso converted to anti-logarithmic values)
-- - --• •w Control Limits (mean logarithmic LCso±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±SA,converted to anti-logarithmic values,
SA.SO=10th percentile of CVs reported nationally by USEPA)
lhfC M
rvvw,d by
V

"Z2 ©00k
PO Box 7565
Asheville, NC 28802
Phone: [phone]
Environmental tasting Solution&loc. Fax: [phone]
January 14, 2022
Mr.Jay Baker
Environmental Chemists, Inc.
6602 Windmill Way
Wilmington, NC 28405
ETS Project Number: 16564
Test Start Date: 01-04-22
Facility Tested: Bald Head Island Utilities
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(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,
Jim Su ner
Laboratory Supervisor
North Carolina Certificate Numbers: Biological Analyses: 037,Drinking Water: 37786,Wastewater: 600
South Carolina Certificate Number: Clean Water Act: 99053-001

(—
Page 1 of 1
Acute Pass/Fail Whole Effluent Toxicity Test,Species: Americamysis bahia
EPA-821-R-0Z-012,Method 2007.0
client Environmental Chemists, Inc. NPDES# NC0085553
Facility Bald Head Island Utilities Outfall 00?
Project# t c, 2-at County Brunswick
Test Concentration(Acute Limit) 90% Dilution mL mL Total volume
Sample was not aerated or treated artless otherwise noted on this form.The sample was warmed to preparation: Sample Dilution water mL
25.03 1.0't in a warm water balls.Artificial sea salt was added to the sample to raise the salinity to
25.0 k 1.0 ppt.The sample was than diluted to the test concentration with salt synthetic water. 990 110 1100
Feeding Test Initiation or Termination Location Randomising
g
Hours Date Sample Number Salt SW Batch
Time Analyst Time Analyst Incubator/Shelf Template ��.�5.
Inu ir 0kn ot•ty�-1-l- • toys ►305 �/ le tAi N4C Z'tptu,-1.-fit\ 16 n .,-tg•1. 0
24 ( ‘
rwminan°n ok- -t.t. t3oa L��4
•Test organisms were fed In holding 2 to 5 hours prior to test initiation.Test organisms were not Led 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 tot.Alkalinity and total residual chlorine performed by the analysts identified on the test specific bench
Concentration Analyst R•( 1 sheets and transcribed to this bench sheet.
pH(S.U.) �/
—1.'1 1-- /4-OC/ Chemical analyses:
Control Dissolved oxygen(mg11) (1. o e)Q Parameter Reporting limit Method number Meter Serial number
4
Salt SV! *Salinity(ppt) IA
-1• 1 i.s b pH 0.1 S.U. SM 4500-Hs 8•2011 Accumet AR20 93312452
'Alkalinity(mg/I CaC05) 4 -1S tJ Dissolved oxygen 1.0 mg/L. SM 4500.0 G-2016 YMI Model 52CE 180104324
'Temperature(°C) - 0 -s t Conductivity 14.9 prnhosfcm SM 2510 8.2011 Accurnet ARM 93312452
pH(S.U.) 7
VJ/ 6j(S— Salinity 1.0 ppt SM 2520 0.2011 YSI PR030 180104324
Test Dissolved oxygen(mg/I) rr qe Alkalinity 5.0 mg CaCO,/L SM 2320 0.2011 Accumet AR20 93312452
Concentration °5ailnlly(ppt) / ti Total residual
l\T�'f! �,�-]�/ �S• chlorine Total mgfl ORION 97-70.1977 Accumet A8250 92343123
'Temperature(°C) •
'Orrrrt"��(f_)a, Temperature f
u•�� ., ,•t7 u•� P 0.1'C 5M 25500.2010 Digital Thermometer C3 ot�o•1tas
100% pH(S.U.) 1
y9 Test Organism information:
(Salinity Dissolved oxygen(mg/L}
Adjusted} 1.0 Organism Source: Aquatic indicators,Inc.
'Salinity(ppt) 71-b Batch(Al Batch Ab): 01-03-22
pH(s.o.) ? ptl7 Age(1 to 5 days old): I-1. -ee,,IS
Dissolved oxygen(mg/1.)
Q Date organisms were born: (time 100% '�•�j 8 01-02-22 1200 to
"Salinityt 7 - organisms were born between was not
provided by supplier}
(PP) r. 01-03-22 1130
Conductivity(µmhos/cm) 32 60 Average transfer volume: <0.25 mL
`Total residual chlorine(mg/L)
b•1p Transfer bowl information: pH(s.u,(= -t..1 Temp.("Cl. 1.1-to
,
Survival Data (number of living organisms):
Control Test Concentration srarisrics:
Hours Method SP
Replicate Replicate `.1‘Skim., I t'J
A B C 0 E F G H t-stat or Rank . 1C-
0 10 10 10 10 10 10 10 10 f)C
Initiation 1-tailed Critical C
24 (6 (0 I 0 (0 /O (p /0 i 0 PASS or FAR. er\%
Termination
1
Mean survival: (00 J- Mean survival: (Qp 7
Comment codes: d=dead,u=unhealthy,s=stressed
SOP AT41-Revlslon 5-Exhibit AT4t.2

•
/�t, N 417.
0 .,::1 ,..,...:,!,1.•l tj.,: • 351 Depot Street
J 3 .-' - Asheville,NC 28801
.-- ,_,,�ie» Phone: [phone]
Fax: [phone]
Environmental Testing Solutions.Inc.
Whole Effluent Toxicity Chain-of-Custody Form
Facility: Environmental Chemists,Inc. NPDES li: NC0085553 Pipe N: 001 County: Brunswick
Bald Head Island Purchase order:
Species: 4inericanaysis(Mysidopsis)bahia Effluent dilution: 90%
Test type: 24-hour Pass/Fail Acute Parameter code: TGE3E
Sample information: (to be completed by sample collector)
lCrab sample: Sample location: 0r,t 0„ Fa)( Inc n.
Date: Q f ja 3 f/t"2, Time: q; L.,, ,}'" Volume collected for testing: ,,„E P
Number of containers filled for testing: 1 1
Method of transport to laboratory: i
r
Comments: .....
1!
1
Triple rinse sample container with sample before filling. Completely fill the sample container with no air space. 5
Pack the sample container completely in ice. The sample must be<6.0°C upon receipt at the laboratory. I
Sample custody: (to be completed by sample collector and facility personnel)
S( r
i BY SIGNING BELOW,I CERTIFY THAT THE PERMIT AND TEST REQUIREMENTS IDENTIFIED ON THIS FORM ARE ACCURATE
Sample collected by;
of (0.3 fZ2
F
ki. .0"L q;,5-..S $
jInc. coal a le and lame l
Relinquished by:! Received by: k
Dav* k -1 ' '��-��'�'
Run S:gnaluw Dale and lumr Pant Sq./wart Pair anti We
,g! Relinquished by: Received by: 1
.3751''' //e/LasK.-
,L.....---.----1—..- N
''i Punt I Sipe Nay Daft aaJ lime anal \:tlnl4:n i)vn. lcYM ,l
1
xrca,n-aim '
.nssm-uvn•<r•r.�m.r...sa�„ .. ,mrtrmvrzr��nxxuaw.+..we. _ a"...»......n•n:n:we.u.�vavmm:>uT..:�wxac::ewe,-.avwwzvv.ea-. va.+,ear:su:>unr.-ens_......_.....m_rtaw,rv.mr-:...*„•:...r.:j
Sample receipt information: (to be completed by ETS personnel)
Relinquished to ETS by: Received at ETS by:
1
L"C14 m e'er 00 1-y )4)-- V� a�0 4zz
1}mt tilrnt:.ee Dne,elllme t'nn 'cen.Nrt Dale nal um.
Custody seals intact?: Q EJ 1 J Sample temperature upon receipt at ETS(°C):
In Ms Nnl net 0.5*C
Samples received in good condition?: n 1
Y. No Total residual chlorine upon receipt at ETS: Fi
(DOD Presence Absense Indscator,MIDL•0 10 mg/0 ty""m ^h"m.
Tracking number: OK
Project number: I($l , Sample number: 2t tO!-tk.
Comments:
213-two l`1

r r — Americamysis (Mysidopsis) bahia
Acute Reference Toxicant Control Chart
EnvIronmontal roving 5olutlons.Inc. Source: Aquatic Indicators, Inc.
I l II I IIIIIIIIIIIIIII
0.54 -
Control Limits (± 2 Standard Deviations)
0.52 - -
0.50 - • • • • -
• • • • • • •
.— 0.48 •
- _
ila 0.46 - -
5 I IIIIIIIIIIIIIIIIIII
J 0•65 1 I I 1 ( IIIIIII I I I I I I I I
),... _
s 0.60 - Warning Limits -
.
00 .,
41
0.55 - -
•
�...._._
0.45 - -
0.40 - -
1 1 1 1 1 1 1 1 1 1 1 1 I t I i 1 1 1 I
01 IP O�:LO 111.0 1y.10 Oy.10 03-to 0�20 05 II-Oy.7.'.OL 21 06'1.'1. Oa.11 0$21 1,�:0-03.21 1a_11 Oy.21 Oy.'L1 0�_IN OQ 1.1
Obi 0i 08 09. 10. 11' Ni. 01: 0l'� 0', OQ" O5 06Y 0�� 0N� 09. 10. 11 11 01
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).
--.n...-, Central Tendency(mean logarithmic LCso converted to anti-logarithmic values)
-- --. -- Control Limits (mean logarithmic LCS0±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 LC,±5A io converted to anti-logarithmic values,
SA.10— 10th percentile of CVs reported nationally by USEPA)
(
4,4
.u!
en•SovnIr

Attachment 7
Discharge Alternatives Evaluation for WET
Test Failures

EXECUTIVE SUMMARY of the
Mixing Zone Analysis for Bald Head Island
Water Treatment Plant NPDES Outfall
(NC0085553)
August 13, 2021
PREPARED FOR PREPARED BY
Village of Bald Head Island Tetra Tech, Inc.
Utilities Department One Park Drive, Suite 200
256 Edward Teach Extension PO Box 14409
Bald Head Island, NC 28461 Research Triangle Park, NC 27709
Tel [phone] Tel [phone]
REVIEWED AND SUBMITTED BY
McKim & Creed
243 North Front Street
Wilmington, NC 28401
Tel [phone]

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
INTRODUCTION
Under Section A. (3) of the National Pollutant Discharge Elimination System (NPDES) permit (NC0085553)
issued by the North Carolina Department of Environmental Quality's Division of Water Resources (NCDWR) and
effective January 1, 2018, the Village of Bald Head Island is required to perform a Discharge Alternatives
Evaluation for its water treatment plant(WTP) discharge. The evaluation was requested by NCDWR to determine
whether there are any economical and technologically feasible alternatives available to the Village to comply with
all NC Water Quality Standards. The current discharge from the WTP reverse osmosis (RO) system, which
averages about 25 gallons per minute (GPM) with a peak of 50 GPM, is at a bulkhead wall in the Bald Head
Island Marina Basin channel (Cape Fear River Basin - HUC 0303000508; Figure ES-1). The source water for the
RO system is groundwater wells on the island. The NPDES permit limit for arsenic is 10 micrograms per liter
(pg/L), and the facility is having intermittent exceedances up to approximately 25 pg/L of arsenic. The facility has
also experienced intermittent failures of the required whole effluent toxicity (WET) testing. The current NPDES
limits do not consider mixing in the receiving waters to establish an instream waste concentration and provide for
a mixing zone prior to meeting the instream criterion.
As part of the Discharge Alternatives Evaluation, Tetra Tech was subcontracted by the Village's primary
engineering consultant McKim & Creed—to conduct a mixing zone analysis to meet the intent of option 6,
"Discharge to a larger waterbody/Perform a dilution model" outlined in the permit requirement. This Executive
Summary outlines the steps taken by Tetra Tech in coordination with the Village and McKim & Creed to complete
the modeling analysis and summarizes the key findings. Copies of key documents prepared during the analysis
are attached to this summary for future reference.
Legend
.
Bald Head Island WTP NPDES�Iu!`all
CatdinaBeach
actom
ANT
K Ve."
V+YNYPOMT Kurt Beach.
4.7
^'l` •
Bald Head
• Island Marina
�7n. sA t
sootiipore
.11
y .. •
if gr
r •99.0=""3/4
. z y' '•
.�� . galt National Geographic.Ev, Garman.HERE,UNEP.V,K;ntC_USG5.NASA ESA.
" ''•= _ s•, MED.NRCAN.GEBCO,NOAA.increment P Corp
Bald Head Island WTP NPDES Outfall A — TETRA TECH
Map produced by M Schmidt 8-6-2020
NAU.1983_StatePlane NOrth_Carolina_FIPS_3200_Feet
Figure ES-1. Location of the Bald Head Island WTP NPDES Outfall
'TE TETRA TECH 2 August 13, 2021

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
STEP 1 - MODELING PLAN DEVELOPMENT AND APPROVAL
The objective of the modeling analysis is to establish acute and chronic dilution ratios that NCDWR can use to
develop site specific effluent limits. The chronic dilution ratio is also used by NCDWR to establish an instream
waste concentration (IWC) for assigning the appropriate whole-effluent toxicity testing requirements for the
discharge. The dilution ratios are determined at fixed distances from the discharge outfall based on determination
of acute and chronic mixing zones. According to NCDWR's guidance on mixing zones (NCDWR, 1999), the size
of each mixing zone is to be determined on a case-by-case basis, taking several factors into consideration such
as the receiving water, extent of mixing, and outfall configuration.
Because the marina receiving water is tidally influenced a more robust modeling analysis was needed to estimate
a dilution ratio for the WTP discharge compared to a 7Q10-based mass balance model which is typically used by
NCDWR for free flowing receiving streams. After reviewing background information with the Village and McKim &
Creed, the Cornell Mixing Zone Expert System (CORMIX) was selected by Tetra Tech to help establish
appropriate acute and chronic dilution ratios under dynamic (non-steady-state conditions) in the marina inlet.
Tetra Tech prepared a Modeling Plan for the proposed mixing zone analysis that could be reviewed and approved
by NCDWR prior to initiating model development. The purpose of this step was to ensure that modeling
performed on behalf of the Village was in line with regulatory requirements and the expectations of NCDWR. The
draft Modeling Plan (Attachment A) was submitted on September 8, 2020, for DWR review. The Plan details the
approach taken including model selection, model domain and simulation period, data requirements, model
development process, dilution analysis approach, and quality assurance and quality control (QAQC) measures
that were applied by Tetra Tech. NCDWR reviewed the plan and approved it during a joint meeting with Tetra
Tech, Village representatives, and McKim & Creed on November 19, 2020, adding a couple of recommendations
that were incorporated by Tetra Tech during plan implementation.
STEP 2 - MODEL DEVELOPMENT AND APPROVAL
The setup and application of the CORMIX model for this evaluation was rigorous and is detailed in the report,
Mixing Zone Analysis for Bald Head Island Water Treatment Plant NPDES Outfall (NC0085553), dated February
4, 2021 (Attachment B). The model and report were reviewed by NCDWR and approved in email correspondence
from Mr. David Hill on March 4, 2021 (Attachment C). However, before the model was applied to establish acute
and chronic dilution ratios, Mr. Hill requested that a model sensitivity analysis be performed for temperature and
salinity in the effluent and receiving water to determine the impacts on mixing and dilution of the effluent.
Additionally, NCDWR notified the Village and Tetra Tech team that background metals sampling for arsenic,
copper, and zinc would be required before an updated wasteload allocation would be issued to set new effluent
limits for the WTP discharge.
STEP 3 - MODEL SENSITIVITY ANALYSIS AND APPLICATION
Tetra Tech provided NCDWR staff with the results of the temperature and salinity model sensitivity analysis on
March 17, 2021 (Attachment D). The analysis showed that the CORMIX model output for the Bald Head Island
discharge was slightly more sensitive to salinity than temperature, but in all cases a 25 percent change in either
input value produced a much lower change in dilution ratio ranging from approximately zero for temperature to
about 11 percent for lower salinities.
In the March 17, 2021 email correspondence accompanying the sensitivity analysis results (provided in
Attachment D), Tetra Tech provided a rationale for NCDWR to consider in determining acute and chronic mixing
zones with corresponding dilution ratios:
(Thl TETRA TECH 3 August 13, 2021

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
"As we discussed on the phone, we think it is important in making your final decision for the Village of
Bald Head Island permit to consider the time frame appropriate for human health criteria, as well as acute
and chronic aquatic life criteria. The human health and chronic aquatic life criteria reflect long-term
exposure. Therefore, although CORMIX is not well suited to predict long-term average dilution, at a
minimum we can consider the tidally-averaged condition (i.e., the average across the low and high tidal
variation scenarios) as appropriate for these two criteria. Additionally, given the relatively short distance
that 1/3rd the inlet channel represents (8.33 m or 27 ft) along with the conservative assumption of
maximum concentration along the plume centerline instead of the radial average at the distance from the
outfall, we believe it makes sense to give the full 8.33 m for the chronic and human health criteria. In this
case that would result in using a dilution ratio of 10:1 for the tidally-averaged mixing, and an instream
waste concentration (IWC) for chronic testing of 10 percent. [see Table ES-1 below]
For any future application of acute aquatic life criteria, we recommend using the average dilution across
the low and high tidal variation scenarios for the most limiting month (June) but restricting it to the near-
field initial mixing. Average dilution ratio remains similar within the first 3 m or roughly 10 ft which seems
appropriate to capture initial mixing. Thus, for the acute dilution ratio we would recommend using 6.5:1."
Table ES-1. Dilution Ratios by Distance from Water Treatment Plant Outfall
High Tidal Variation Low Tidal Variation
Distance from Outfall (submerged outfall) (outfall above surface) Average Dilution
(m) Ratio
June December June December
1 2.7 2.7 7.1 8.3 6.0
2 5.9 5.3 7.1 8.3 6.7
3 5.9 5.3 7.1 8.3 6.7
4 5.9 5.3 11.7 13.8 9.2
5 5.9 5.3 12.2 13.8 9.3
6 6.6 6.0 12.2 14.2 9.8
7 6.6 6.0 12.5 14.6 9.9
8 6.6 6.0 12.5 14.6 9.9
8.33(1/3 width of the 6.6 6.0 12.8 14.6 10.0
channel)
9 7.1 6.0 12.8 14.9 10.2
10 7.1 6.5 12.8 15.1 10.4
1 11 7.1 6.5 13.0 15.1 10.4
12 7.1 6.5 13.2 15.3 10.5
13 7.8 7.0 13.2 15.5 10.9
14 7.8 7.0 13.4 15.5 10.9
15 7.8 7.0 13.4 15.7 11.0
16 7.8 7.0 13.6 15.9 11.1
17 8.5 7.7 13.7 15.9 11.5
18 8.5 7.7 13.7 16.1 11.5
19 8.5 7.7 13.9 16.2 11.6
20 9.2 7.7 13.9 16.2 11.8
21 9.2 8.4 14.1 16.4 12.0
22 9.2 8.4 14.3 16.6 12.1
23 9.2 8.4 14.3 16.6 12.1
24 10.0 8.4 14.5 16.8 12.4
25(width of the 10.0 9.1 14.5 17.0 12.7
channel)
lt TETRA TECH 4 August 13, 2021

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
STEP 4 — BACKGROUND METALS MONITORING
The final piece of information needed by NCDWR to complete reasonable potential analysis and wasteload
allocation determinations was the representative background concentrations for the metals of concern in the
Village's NPDES permit (arsenic, copper, and zinc). Based on discussion with the NCDWR NPDES Permitting
Unit representative, Tetra Tech provided the Village with a draft Monitoring Plan on January 26, 2021, that could
be used to guide the Village's field monitoring and lab analysis contractor and ensure that NCDWR would
approve of the methods applied to collect the data (see Attachment E).
The Village contracted with Environmental Chemists, Inc. to collect the background data in both the Cape Fear
River mainstem and in the marina per discussion with NCDWR (see Figure ES-2). Monitoring runs were
conducted twice daily, once on the incoming tide and once on the outgoing tide. Four sets of data were collected
between April 27, 2021, and May 21, 2021. The corresponding results were submitted to NCDWR on behalf of the
Village by Tetra Tech on June 10, 2021 (email and results provided in Attachment F).
River Sampling Site
(33.883167, -78.008933)
•
•
Cape Fear River b
t . ,. .•
-
NPDES Outfall -
Marina Sampling Site
.�'. (33.876293, -78.000442)
u ce s s."413it. •Jr r.'•)?f3 11;:17 ,next.J r t ,
.',D t 1.:ff, , ,% ,Jam at 1.19 War GOTNTP!(il>Pf
Metals Sampling Sites ,� TETRA TECH
Map produced by M Schmidt 6-10-2021
NAD 1983 StatePlane North Carolina FIPS 3200 Feet
Figure ES-2. Locations of Background Metals Sampling Sites Used by Environmental Chemists,-rti TETRA TECH 5 August 13, 2021

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
NCDWR APPROVED DILUTION RATIOS
NCDWR provided the following response to Tetra Tech, the Village, and McKim & Creed in a July 30, 2021 email
from David Hill, Environmental Specialist II within the NCDWR NPDES Permitting Unit, to Trevor Clements
(provided in Attachment G):
"After reviewing the model results, sensitivity analyses, and stream sampling, the Division concurs with
your assessment with using an average 10:1 dilution for human health and aquatic life chronic criteria. A
dilution of 6.5:1 for acute criteria is also acceptable. These dilution ratios only apply to the parameters
that were sampled for(arsenic, copper, and zinc) and WET testing."
RECOMMENDED NEXT STEPS
The existing NPDES permit limits will need to be modified to reflect the approved mixing zone dilution ratios.
Since the background metals sampling revealed no detectable levels, the new wasteload allocations should
provide credit for the full acute and chronic dilution ratios (i.e., 6.5:1 and 10:1, respectively). It is possible that
NCDWR may determine that only monitoring is required for some of the toxicants currently limited by the permit.
Therefore, we recommend that the Village take the following steps:
1. Make a request in writing for NCDWR to conduct an updated Reasonable Potential Analysis using the
approved dilution ratios to determine whether effluent limits or monitoring only will be required for total
arsenic, total copper, and total zinc, and if limits are required request what those limits will be and an
explanation of how they were calculated (i.e., formula and assumptions).
2. Submit an application for a permit modification to incorporate the new limits or monitoring requirements
for total arsenic, total copper, and total zinc, and to change the IWC for the WET test to 10 percent with
the appropriate test organism. Since the existing permit would not be up for renewal until November 30,
2022 and because NCDWR has a permitting backlog that would likely delay renewal past that date,
modifying the permit will greatly reduce the risk of noncompliance and exposure to civil fines in the
interim.
'h TETRA TECH 6 August 13, 2021

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
LIST OF ATTACHMENTS
Attachment A. Draft Modeling Plan
Attachment B. Mixing Zone Analysis Modeling Report
Attachment C. Email from NCDWR approving CORMIX model and requesting sensitivity analysis
Attachment D. Model sensitivity analysis results and Tetra Tech recommendations for mixing zone dilution ratios
Attachment E. Draft Background Metals Monitoring Plan
Attachment F. Email correspondence submitting background metals monitoring results
Attachment G. Email from NCDWR concurring with recommendations for mixing zone dilution ratios
. J TETRA TECH 7 August 13, 2021

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
ATTACHMENT A — DRAFT MODELING PLAN
Draft Modeling Plan
1TETRATECH August 13, 2021

Mixing Zone Analysis Modeling Plan —
Bald Head Island Water Treatment Plant
NPDES Outfall
September 8, 2020
PREPARED FOR PREPARED BY
North Carolina DEQ/Division of Water Tetra Tech, Inc.
Resources One Park Drive, Suite 200
512 North Salisbury Street PO Box 14409
1617 Mail Service Center Research Triangle Park,
Raleigh, NC 27699-1617 NC 27709
Tel [phone]
REVIEWED AND SUBMITTED BY
McKim & Creed
243 North Front Street
Wilmington, NC 28401
Tel [phone]

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
TABLE OF CONTENTS
1.0 INTRODUCTION 5
2.0 MODELING APPROACH 7
2.1 CORMIX 7
2.2 Model Domain and Simulation Period 7
2.3 Data Requirements and Model Development 9
2.3.1 Channel Geometry, Roughness, and Slope 9
2.3.2 Ambient Velocity and Density 11
2.3.3 Wind 12
2.3.4 NPDES Discharge 12
2.4 Dilution Analysis Approach 13
2.5 QA/QC Approach 14
3.0 ANTICIPATED DELIVERABLES 14
4.0 BIBLIOGRAPHY 15
'b TETRA TECH ii September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
LIST OF FIGURES
Figure 1-1. Location of the Bald Head Island WTP NPDES Outfall 6
Figure 2-1. CORMIX Model Domain 8
Figure 2-2. Average Salinity and Water Temperature by Month Observed at Lower Cape Fear River Program
Monitoring Station M18 (2010-2018)—June and December Simulation Periods (Green Boxes) 9
Figure 2-3. 5-foot Resolution Light Detection and Ranging (LiDAR) Data (NOAA, 2014) 10
Figure 2-4. Nearby Lower Cape Fear River Monitoring Station — M18 12
TETRA TECH III September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
ACRONYMS/ABBREVIATIONS
Acronyms/Abbreviations Definition
pg/L Micrograms per liter
CORMIX Cornell Mixing Zone Expert System
DMR Discharge Monitoring Report
EFDC Environmental Fluid Dynamics Code
GPM Gallons per minute
IWC Instream Waste Concentration
JP-EFDC Jet Plume- Environmental Fluid Dynamics Code
LCFRP Lower Cape Fear River Program
LiDAR Light Detection and Ranging
MGD Million gallons per day
NCDOT North Carolina Department of Transportation
NCDWR North Carolina Division of Water Resources
NOAA National Oceanic and Atmospheric Administration
NPDES National Pollutant Discharge Elimination System
PSU Practical Salinity Units
QA/QC Quality Assurance/Quality Control
RO Reverse Osmosis
UNCW University of North Carolina Wilmington
USEPA United States Environmental Protection Agency
WET Whole Effluent Toxicity
WTP Water Treatment Plant
I TETRA TECH iv September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
1.0 INTRODUCTION
McKim & Creed is supporting the Village of Bald Head Island to address issues associated with the disposal of
concentrate water from a reverse osmosis (RO) drinking water system under the National Pollutant Discharge
Elimination System (NPDES NC0085553) (Figure 1-1). The current discharge from the RO system, averaging
around 25 gallons per minute (GPM), with a peak of 50 GPM, is at a bulkhead wall in the Bald Head Island Marina
Basin channel (Cape Fear River Basin - HUC 0303000508). The source water for the RO system is groundwater
wells on the island. The NPDES permit limit for arsenic is 10 micrograms per liter (pg/L), and the facility is having
intermittent exceedances up to approximately 25 pg/L of arsenic. The facility has also experienced intermittent
failures of the required whole effluent toxicity (WET) testing. The current NPDES limits do not consider mixing in
andprovidefor mixingzoneprior to meeting
receiving waters to establish an instream waste concentration o a
the instream criterion.
Tetra Tech has been asked to prepare a plan for developing and applying a mixing zone model to support
regulatory permitting and potential diffuser design considerations, which is described in this report. The planned
dilution modeling analysis will allow the North Carolina Division of Water Resources (NCDWR), the Village of Bald
Head Island, and McKim & Creed to accurately determine the environmental impacts of the RO system effluent
on the receiving waterbody. A dilution ratio will be established for the NPDES permit based on site specific
effluent flow and mixing processes within the receiving waterbody. The dilution ratio can be used by NCDWR to
establish more accurate instream waste concentrations (IWC) needed for permitting decisions including effluent
limits and whole-effluent toxicity testing requirements.
IWCs for critical conditions are typically computed by dividing the effluent flow by the sum of the effluent flow and
7Q10 instream flow (lowest average flow over a period of one week with a recurrence interval of 10 years). This
calculation method, however, is not representative of effluent dilution in tidally influenced receiving waterbodies
and a more robust modeling analysis is needed to estimate a dilution ratio for the water treatment plant (WTP) on
Bald Head Island. Cornell Mixing Zone Expert System (CORMIX)will be used to evaluate dilution in the mixing
zone for the permitted discharge as described in this modeling plan. Upon NCDWR's approval of the modeling
plan, a second phase of work will be initiated to implement the modeling plan and conduct the dilution study.
lb TETRA TECH 5 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
tuna two Legend
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Map produced by M.Schmidt 8-6-2020 TETRA TECH
NAD 1983 StatePlane North Carolina FIPS 3200 Feet �-J
Figure 1-1. Location of the Bald Head Island WTP NPDES Outfall
l'TETRA TECH 6 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
2.0 MODELING APPROACH
2.1 CORMIX
CORMIX is a comprehensive software system for analysis of mixing zone dilution from the discharge of point
source effluent into receiving waterbodies (Doneker, 2007). The model can simulate numerous types of diffusers
(e.g., single or multi-port diffusers) under steady-state (fixed) or unsteady conditions. CORMIX was initially
developed in 1985 and was updated several times over the next two decades using funding provided by several
agencies, including the U.S. Environmental Protection Agency (USEPA), U.S. Bureau of Reclamation, Cornell
University, Oregon Graduate Institute, University of Karlsruhe, Germany, Portland State University, and MixZon
Inc. (Doneker, 2007). Programming languages like NEXPERT Object, an "expert systems shell", C++, and
FORTRAN were used to write CORMIX due to the complex programming requirements. While NEXPERT was
used for knowledge representation and logical reasoning, FORTRAN was used for mathematical calculations
(Doneker, 2007). The program can be used to predict the characteristics of the geometry and dilution of the initial
mixing zone to ensure compliance with the water quality regulatory constraints. The program can also be used to
study and predict the response of the plumes from the effluent discharges at larger distances (Doneker 2007).
CORMIX has been extensively verified by the developers, has undergone extensive peer review, and is often
applied for dilution analyses. The latest release is CORMIX v11.0, which will be applied in the mixing zone study
for the Bald Head Island WTP.
There is not compelling justification to develop a more complex and costly model, such as Environmental Fluid
Dynamics Code (EFDC). Given that nearfield dilution in the marina channel (Figure 1-1) is the primary study
question and that discharge is comprised primarily of RO concentrate and is relatively small (permitted design
flow rate of 0.288 million gallons per day (MGD)) compared with the volume of the Lower Cape Fear River
Estuary, CORMIX is an appropriate model to address the study objectives at this site. Based on a review of
velocity information at a nearby National Oceanic and Atmospheric Administration (NOAA) Tidal Current station—
Fort Caswell, and mixing facilitated by boating activities in the waterway and wind, dilution of the RO concentrate
is expected to be relatively high. The CORMIX model will support the estimation of dilution at different periods in
the tidal cycle for the existing outfall and, if needed, potential diffuser design.
2.2 MODEL DOMAIN AND SIMULATION PERIOD
The model domain, or coverage area, will include the marina channel from the Lower Cape Fear River Estuary
entry/exit location to the boat slips area entry/exit location, as shown in Figure 2-1. The outfall is located
approximately 45 meters from the marina docking area.
The efficiency of effluent mixing and the shape of the plume are influenced by the ambient temperature and
salinity of the receiving water, which determine the ambient density. The density of seawater is higher at lower
water temperatures and higher salinity. Density and salinity have been measured by the Lower Cape Fear River
Program (LCFRP) at nearby Cape Fear River station M18. Monthly averages are published in the LCFRP's
annual reports by site (LCFRP, 2011-2016; 2019). Across the period of 2010 to 2018, the month of December
tends to collectively exhibit a lower water temperature (13.3 degrees Celsius) and higher salinity (29.0 practical
salinity units, psu). Conversely, density of seawater is lower at higher water temperatures (26.4 degrees Celsius)
and lower salinity (25.5 psu); these conditions are typically co-observed in June. Two simulation periods will be
conducted that represent conditions in June and December. This serves to bound the expected range in ambient
density as a function of salinity and water temperature and to evaluate the impacts of ambient density on plume
geometry and dilution.
't TETRA TECH 7 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
rPir .
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Figure 2-1. CORMIX Model Domain
It TETRA TECH 8 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
35
30 Jul Aug
Jun •
•
25 Oct
too May •
v
v •
20
Apr Nov
• •
51 Mar
Dec
•
•
10 Jan Feb
• •
0
5
0
22 24 26 28 32
Observed Salinity(psu)
Figure 2-2. Average Salinity and Water Temperature by Month Observed at Lower Cape Fear River Program
Monitoring Station M18 (2010-2018)—June and December Simulation Periods (Green Boxes)
2.3 DATA REQUIREMENTS AND MODEL DEVELOPMENT
CORMIX requires information about the receiving channel geometry, ambient conditions in the receiving
waterbody, outfall design, and effluent properties. The sections below summarize the data that will be used for
model development. Sufficient data are available to construct a CORMIX dilution analysis model for the Bald
Head Island WTP RO concentrate discharge.
2.3.1 Channel Geometry, Roughness, and Slope
Geometric properties in the discharge vicinity will be specified in CORMIX. CORMIX requires that the receiving
water be represented as a rectangular channel that is either laterally bounded or unbounded. Receiving
waterbodies constrained on both sides by banks, such as rivers, are considered bounded. When interaction of the
plume is unlikely to reach the opposing bank(e.g., a wide estuary), the system is considered unbounded. The
bounded option is appropriate for the site and will be used for the marina channel. Aerial imagery and Light
Detection and Ranging (LiDAR) data for North Carolina from NOAA Fisheries Digital Coast were reviewed in
ArcGIS for channel geometry information for the study area. The 5-foot resolution LiDAR was produced as a joint
effort between NC Emergency Management, NC Geodetic Survey, and the NC Department of Transportation
(NCDOT). The elevation data were collected between late January and mid-March of 2014 (NOAA, 2014; Figure
2-3). Based on these sources, the channel is approximately 40 meters wide near the estuary (section about 65
meters long) and 25 meters wide near the docking area (section about 85 meters long). Therefore; a length-
It]TETRA TECH 9 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
weighted width of 31.5 meters will be applied in the model. The channel will be characterized as laterally bounded
and uniform. The length of the channel is approximately 150 meters long.
Legend
5-ft Resolution LiDAR(NOAA,2014) 111
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wimp High 15.05
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Figure 2-3. 5-foot Resolution Light Detection and Ranging (LiDAR) Data (NOAA, 2014)
Water depth in the marina channel will be based on tidal conditions at Bald Head Island, depth measurements
collected during a site visit at approximately low tide (completed on August 28, 2020), and outfall engineering
diagrams provided by McKim & Creed. Water depth measured during the site visit at low tide was 8 feet. Tidal
cycle charts for Bald Head Island were obtained (U.S. Harbors, 2020). On the day of the site visit, the water depth
variance from low to high tide was approximately 5.1 feet(afternoon high tide at 4:51 pm—5.1 feet and morning
low tide at 10:11 am—0.0 feet). An average daily water depth of 10.55 feet, therefore, will be applied in the
CORMIX model for mixing simulation.
In CORMIX, the roughness or friction of the channel is quantified through application of a Manning's n coefficient.
Manning's n values for open channel flow are typically selected from tables based on characteristics of the
waterbody, such as substrate type, vegetation and debris, and channel shape (meandering or straight). CORMIX
automatically converts this coefficient to a Darcy-Weisbach friction factor. Channel conditions were reviewed
during the site visit to support roughness characterization. The waterway is dredged, relatively straight, with a
clean (i.e., little debris accumulated at the bottom) and sandy/muddy substrate. These features will inform the
selection of a suitable Manning's n coefficient for the channel given specifications provided in open channel
hydraulic references, such as Chow(1959).
rtl TETRA TECH 10 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
CORMIX requires specification of bottom slope in the receiving channel. Bottom slope is measured from the bank
(i.e., location of the discharge) outwards into the receiving waterbody. The marina channel is dredged and is
expected to generally be of consistent depth across the width of the waterway. Therefore, a negligible bottom
slope will be applied in the model.
2.3.2 Ambient Velocity and Density
CORMIX provides the option to represent steady ambient flow conditions or unsteady ambient flow conditions for
tidally influenced systems that exhibit reversing flows. The CORMIX model for the Bald Head Island WTP
discharge will model unsteady flow due to the marina channel connection to the Lower Cape Fear River Estuary.
Information about the duration and timing of the tidal period will be obtained from charts published by U.S.
Harbors for Bald Head Island and used to inform the tidal period duration in the model (U.S. Harbors, 2020).
Measurements of velocity through the marina channel are not available. NOAA tidal current charts provide
information about ambient velocity at select stations in this region of North Carolina. The nearest site is Fort
Caswell (CFR1625, 33.8883° N - 78.0076° W) located north of the marina in the Lower Cape Fear River. Velocity
data at this site will be collected to inform the model input velocity. In addition, Tetra Tech recently updated and
calibrated the Jet Plume Environmental Fluid Dynamics Code (JP-EFDC) model of the Lower Cape Fear River
Estuary (Tetra Tech, 2019). The model extent does not cover the marina channel; however, the grid extends to
the shore of the river near the marina channel entrance. Simulated velocity at the nearest grid cell will be
extracted to inform the velocity input in the CORMIX model. Due to increased friction and confinement, it is
anticipated that the velocity in the marina channel is lower compared to the NOAA tidal current site and JP-EFDC
model. Sensitivity testing will be completed to quantify the impacts of the current velocity on mixing dynamics and
dilution.
For non-freshwater systems, CORMIX requires specification of the ambient density or ambient temperature and
salinity, which are applied during the model simulation to estimate receiving water density. Realistic predictions of
water density due to salinity and temperature is crucial for characterizing mixing processes in the dilution study.
Water temperature and salinity data are available from 1996 to 2018 (2016 to 2018 data only available in annual
reports) as part of the joint venture between LCFRP and University of North Carolina VVilmington's (UNCW)
Aquatic Ecology Laboratory. Site M18—Cape Fear River at Channel Marker 18— is the closest site to the study
area (Figure 2-4), and data from this location will be used to characterize salinity and water temperature in the
receiving waterbody for the two simulation periods, June and December, which bound the expected ambient
density conditions.
Based on the information published in the LCFRP Environmental Assessment Report for 2018, the mean salinity
concentration at the M18 station was 22.3 psu (LCFRP, 2019). The lowest salinities occurred in the late spring
and early fall due to hurricane activity and salinity in 2018 was lower compared to earlier years. Therefore, the
average salinity in June and December simulation periods from 2010 to 2018 will be applied for characterization
of ambient conditions. Data from M18 will be extracted from the annual reports to determine the representative
salinity conditions.
The mean water temperature observed at M18 during 2018 was 19.1 degrees Celsius (LCFRP, 2019). Monthly
average water temperature was lowest in January at 4.7 degrees Celsius and highest in July at 29.9 degrees
Celsius. Similar to salinity, average water temperature in June and December from 2010 to 2018 will be applied in
the CORMIX mixing zone model simulations.
TETRA TECH 11 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
hi ,+tea, .+>r• , •
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NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet
Figure 2-4. Nearby Lower Cape Fear River Monitoring Station — M18
2.3.3 Wind
CORMIX accounts for impacts of wind on the hydrodynamics of the system. Wind statistics, including the
average, minimum, and maximum wind speed, by month and wind direction are provided by WindFinder
(https://www.windfinder.com/windstatistics/bald head island) for Bald Head Island. The yearly average wind
speed at Bald Head Island is 9 miles per hour(mph) with gusts of 12 mph. The average wind speed reported for
both simulation months of June and December is also 9 mph. Continuous wind records are available at the
Wilmington International Airport; however, it is located about 42 miles away and is further inland. Therefore, the
average wind speed at Bald Head Island of 9 mph will be applied in the CORMIX model as it best represents local
conditions.
2.3.4 NPDES Discharge
CORMIX is capable of simulating single port and multiport discharges. The Bald Head Island RO concentrate
outfall is a single port. Information about the port configuration, including the port diameter, distance to the
nearest bank, vertical and horizontal angles, and port height above the channel bottom, will be based on
specifications in engineering diagrams provided by McKim & Creed for the facility. The vertical angle is measured
[lb]TETRA TECH 12 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
between the port centerline and the horizontal plane and the horizontal angle is measured counterclockwise from
the ambient current direction. Based on the engineering diagram, the outfall is directed parallel to the horizontal
plane and is perpendicular to the bank—this geometry will be specified in the CORMIX model.
The volumetric flow rate of the effluent to the receiving waterbody is specified in CORMIX. For dilution
quantification, it is important to represent the maximum allowable discharge rate to the marina channel.
Therefore, for the Bald Head Island WTP discharge, the dilution model will use the permitted design flow rate for
the facility, 0.288 MGD. Actual discharge rates from the RO system tend to be much lower. In 2019, for example,
Discharge Monitoring Reports (DMR) records show that the maximum monthly discharge rate from the facility
ranged from 0.038 to 0.077 MGD. Application of the design flow rate provides a conservative quantification of
dilution in the system.
The temperature of the effluent must also be specified. DMRs have been downloaded for the facility from the
ECHO Clean Water Act Search engine and database. These records will be used to establish the effluent
temperature for the dilution model.
2.4 DILUTION ANALYSIS APPROACH
Tetra Tech will develop a near-field CORMIX model to predict and analyze the geometry and the dilution
characteristics of the plume from the Bald Head Island WTP into the marina channel. Tetra Tech will use detailed
pipe outfall survey information provided by McKim & Creek to parameterize the effluent input parameters and
outlet geometry. Water surface elevation, velocity, salinity, and temperature monitoring data described previously
will be used to define the ambient conditions for the simulation periods. Following model setup, the model will be
run and reviewed to ensure that the model is numerically stable and that initial results are reasonable.
Adjustments will be made as necessary.
Following development, the model will be applied to simulate mixing and dilution of the effluent in the marina
channel. The concept of dilution is used to quantify the degree of mixing and the transport of the effluent
discharge in the system. The dilution of the effluent discharge can be determined by the following equation:
Ce
e
C
where, D is the dilution ratio,
Ce is the concentration of the effluent, and
C is the instream concentration.
For this assessment, a conservative tracer with a concentration of Ce will be introduced into the effluent
discharge. Background levels of the conservative tracer will be set to zero. The mixing model will then be used to
simulate the distribution of the tracer in the system such that a quasi-steady state is achieved.
Instream concentrations will be used to evaluate dilution ratios. The effluent flow rate will be equivalent to the
permitted design flow rate, which will provide the dilution ratios for the expected highest discharge from the
facility. The dilutions ratios will be calculated at the ebb, peak, and slack tides and summarized at multiple
distances from the facility outfall location.
Tetra Tech will perform Quality Assurance and Quality Control (QA/QC) on the processed data and model setup.
Tetra Tech will present the final CORMIX model and report describing the dilution analysis to McKim & Creek, the
Village of Bald Head Island, and NCDWR for review and approval.
(Th TETRA TECH 13 September 8, 2020

Bald Head Island WTP Mixing Zone Analysis Modeling Plan
2.5 QA/QC APPROACH
Tetra Tech will perform QA/QC checks throughout the modeling process, which includes the following
procedures:
1. Effective data organization. This task will involve:
a. Acquiring the data needed to setup the CORMIX model.
b. Archiving the data and recording the information on the source of the data.
2. Data transformation. This task is key in the model setup. After acquiring the data and archiving the
original data, the data will need to be transformed or processed to be used in the model setup. QA checks
will be performed on the effluent and ambient characteristics used as inputs for the model. Checks will be
performed to ensure reasonability and accuracy of the inputs.
3. Tracking of the data transformations. A data tracking sheet will be used for the dilution analysis study.
The sheet will be updated throughout the modeling process. The sheet will contain information on the
source of data for modeling inputs, how the data was manipulated and transformed, and the location of
the final data sets. This will provide documentation throughout the entire modeling process that can be
provided to clients or other modelers who assist on the project. Following completion of modeling, the
tracking sheet will be reviewed by a reviewer not directly involved in the modeling project, if time and
resources are available.
4. Model review. Information on data assumptions, model set-up, calibration parameters, and calibration
results at the completion of major calibration benchmarks will be discussed internally with input from
senior modelers.
3.0 ANTICIPATED DELIVERABLES
A draft modeling report will be delivered for the CORMIX analysis for NCDWR review. The modeling reports will
include documentation of all data sources and final results. Modeling assumptions and elements of uncertainty
will be clearly documented to support use by McKim & Creek, the Village of Bald Head Island, and NCDWR in
establishing the basis for permit conditions. As needed, a meeting will be conducted with all parties to review
results and discuss any potential concerns or needed model/report modifications. A final report will be submitted
for use by all parties.
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Bald Head Island WTP Mixing Zone Analysis Modeling Plan
4.0 BIBLIOGRAPHY
Chow, V. T. 1959. Open-Channel Hydraulics. McGraw-Hill, Inc.
Doneker L. Robert, Jirka, H. Gerhard. 2007. CORMIX User Manual. A Hydrodynamic Mixing Zone Model and
Decision Support System for Pollutant Discharges into Surface Waters. EPA-823-K-07-001
LCFRP. 2019. Environmental Assessment of the Lower Cape Fear River System, 2018. CMS Report No. 19-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2016. Environmental Assessment of the Lower Cape Fear River System, 2015. CMS Report No. 16-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2015. Environmental Assessment of the Lower Cape Fear River System, 2014. CMS Report No. 15-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2014. Environmental Assessment of the Lower Cape Fear River System, 2013. CMS Report No. 14-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2013. Environmental Assessment of the Lower Cape Fear River System, 2012. CMS Report No. 13-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2012. Environmental Assessment of the Lower Cape Fear River System, 2011. CMS Report No. 12-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2011. Environmental Assessment of the Lower Cape Fear River System, 2010. CMS Report No. 11-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
National Oceanic and Atmospheric Administration (NOAA) Digital Coast Data Access Viewer. Charleston, SC:
NOAA Office for Coastal Management. Accessed Aug 21, 2020 at https://coast.noaa.gov/dataviewer.
Tetra Tech. 2019. Effluent Mixing Analysis for the Cape Fear Public Utility Authority Southside and Sweeney
NPDES Outfalls. Prepared by Tetra Tech for Cape Fear Public Utility Authority, Wilmington, North
Carolina.
US Harbors. 2020. Tides in Bald Head, NC. Retrieved August 28, 2020, from
https://www.usharbors.com/harbor/North-Carolina/Bald-Head-nc/tides
lb TETRA TECH 15 September 8, 2020

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
ATTACHMENT B - MIXING ZONE ANALYSIS MODELING REPORT
Mixing Zone Analysis Modeling Report
TETRA TECH August 13, 2021

Mixing Zone Analysis for Bald Head Island
Water Treatment Plant NPDES Outfall
(NC0085553)
February 4, 2021
PREPARED FOR PREPARED BY
North Carolina DEQ/Division of Water Tetra Tech, Inc.
Resources One Park Drive, Suite 200
512 North Salisbury Street PO Box 14409
1617 Mail Service Center Research Triangle Park,
Raleigh, NC 27699-1617 NC 27709
Tel [phone]
REVIEWED AND SUBMITTED BY
McKim & Creed
243 North Front Street
Wilmington, NC 28401
Tel [phone]
L

Bald Head Island WTP Mixing Zone Analysis Modeling Report
TABLE OF CONTENTS
1.0 INTRODUCTION 1
2.0 MODELING APPROACH 3
2.1 CORMIX 3
2.2 Model Domain and Simulation Period 3
2.3 Data Requirements and Model Development 6
2.3.1 Channel Geometry, Roughness, and Slope 6
2.3.2 Ambient Velocity and Density 8
2.3.3 Wind 11
2.3.4 NPDES Discharge 11
2.4 Dilution Analysis Approach 12
3.0 MODELING RESULTS 13
4.0 SUMMARY AND CONCLUSIONS 20
5.0 BIBLIOGRAPHY 21
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Bald Head Island WTP Mixing Zone Analysis Modeling Report
LIST OF FIGURES
Figure 1-1. Location of the Bald Head Island WTP NPDES Outfall 2
Figure 2-1. CORMIX Model Domain 4
Figure 2-2. Average Salinity and Water Temperature by Month Observed at Lower Cape Fear River Program
Monitoring Station M18 (2010-2018)—June and December Simulation Periods (Green Boxes) 5
Figure 2-3. 5-foot Resolution Topobathymetric Light Detection and Ranging (LiDAR) Elevation Data (NOAA,
2014, Datum-NAVD 88) 7
Figure 2-4. Tidal Velocity Sine Curve for the Marina Channel -June 14, 2020, High Tide (3:38 PM) to Low Tide
(9:32 PM) 9
Figure 2-5. Nearby Lower Cape Fear River Monitoring Station — M18 11
Figure 3-1. Dilution Ratios for the Bald Head Island Water Treatment Plan Discharge 13
Figure 3-2. Plume Geometry for December, High Tidal Variation Scenario (submerged outfall) 14
Figure 3-3. Plume Geometry for June, High Tidal Variation Scenario (submerged outfall) 15
Figure 3-4. Plume Geometry for December, Low Tidal Variation Scenario (outfall above surface) 16
Figure 3-5. Plume Geometry for June, Low Tidal Variation Scenario (outfall above surface) 17
Figure 3-6. Sensitivity of Channel Width on Dilution Ratios for the Bald Head Island Water Treatment Plan
Discharge (December, high tidal variation, submerged outfall) 19
LIST OF TABLES
Table 2-1. Average Salinity and Water Temperature by Month Observed at Lower Cape Fear River Program
Monitoring Station M18 (2010-2018) and Calculated Ambient Density—June and December Simulation Periods
(Green Highlight) 5
Table 2-2. Approximated Tidal Velocity and Cumulative Volume Change in the Marina Channel - June 14, 2020,
High Tide (3:38 PM) to Low Tide (9:32 PM) 9
Table 2-3. Ambient Conditions for Bald Head Island CORMIX Scenarios 10
Table 3-1. Dilution Ratios by Distance from Water Treatment Plant Outfall 18
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Bald Head Island WTP Mixing Zone Analysis Modeling Report
ACRONYMS/ABBREVIATIONS
Acronyms/Abbreviations Definition
pg/L Micrograms per liter
CORMIX Cornell Mixing Zone Expert System
DMR Discharge Monitoring Report
EFDC Environmental Fluid Dynamics Code
GPM Gallons per minute
IWC Instream Waste Concentration
JP-EFDC Jet Plume - Environmental Fluid Dynamics Code
LCFRP Lower Cape Fear River Program
LiDAR Light Detection and Ranging
MGD Million gallons per day
MLLW Mean Lower Low Water
MLW Mean Low Water
NCDEQ North Carolina Department of Environmental Quality
NCDOT North Carolina Department of Transportation
NCDWR North Carolina Division of Water Resources
NOAA National Oceanic and Atmospheric Administration
NPDES National Pollutant Discharge Elimination System
PSU Practical Salinity Units
QA/QC Quality Assurance/Quality Control
RO Reverse Osmosis
UNCW University of North Carolina Wilmington
USEPA United States Environmental Protection Agency
WET Whole Effluent Toxicity
WTP Water Treatment Plant
•
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Bald Head Island WTP Mixing Zone Analysis Modeling Report
1.0 INTRODUCTION
McKim & Creed is supporting the Village of Bald Head Island to address issues associated with the disposal of
wastewater concentrate from a reverse osmosis (RO) drinking water treatment plant (WTP) under the National
Pollutant Discharge Elimination System (NPDES NC0085553) (Figure 1-1). The current discharge from the RO
system, averaging around 25 gallons per minute (GPM), with a peak of 50 GPM, is at a bulkhead wall in the Bald
Head Island Marina Basin channel (Cape Fear River Basin - HUC 0303000508, Subbasin 03-06-17, Stream
Segment 18-88-8-5). The source water for the RO system is derived from groundwater wells on the island. The
NPDES permit contains effluent limits for a variety of substances, including arsenic, copper, and zinc. The effluent
limit for arsenic is 10 micrograms per liter (pg/L) as both a monthly average and a daily maximum, required to be
monitored monthly. The facility is experiencing intermittent exceedances up to approximately 25 pg/L of arsenic.
The monthly average and daily maximum limits for total copper are 3.70 pg/L and 5.80 pg/L, respectively, and for
total zinc are 85.6 pg/L and 95.1 pg/L. The current NPDES limits are applied to the effluent and do not consider
mixing and dilution in the receiving waters.
As described in the North Carolina surface water standards under 15A NCAC 02B .0204 (b), "A mixing zone may
be established in the area of a discharge in order to provide opportunity for the mixture of the wastewater with the
receiving waters. Water quality standards shall not apply within regions designated as mixing zones,...". Mixing
zone guidance from the North Carolina Department of Environmental Quality (NCDEQ, 1999) states that the
Division is to evaluate the feasibility and appropriateness of a mixing zone if it is requested by the permittee. The
Bald Head Island WTP is requesting application of a mixing zone in their permit renewal.
Tetra Tech established a modeling plan for developing and applying a mixing zone model to support regulatory
permitting and diffuser design alternatives with the potential to enhance dilution, if needed. In September 2020 the
modeling plan was submitted to the North Carolina Division of Water Resources (NCDWR), the Village of Bald
Head Island, and McKim & Creed. NCDWR provided a few recommendations and approved the modeling plan
during a meeting on November 19, 2020. NCDWR's recommendations were implemented in the development and
application of the mixing model. These are discussed in this report.
Results from the modeling analyses were used to compute a dilution ratio for the NPDES permit. The dilution ratio
quantifies the environmental impacts of the RO system effluent on the receiving waterbody accounting for site-
specific ambient conditions, effluent characteristics, and mixing dynamics within the receiving channel. The
dilution ratio can be used by NCDWR to establish more accurate instream waste concentrations (IWC) needed for
permitting decisions including effluent limits and whole-effluent toxicity testing requirements.
IWCs for critical conditions in flowing streams (expressed as a fraction of the effluent concentration) are typically
computed by dividing the effluent flow by the sum of the effluent flow and 7Q10 instream flow (lowest average
flow over a period of one week with a recurrence interval of 10 years). This calculation method, however; is not
representative of effluent dilution in tidally influenced receiving waterbodies and a more robust modeling analysis
was applied to estimate a dilution ratio for the Bald Head Island WTP. The Cornell Mixing Zone Expert System
(CORMIX; Doneker et al., 2007) was used to evaluate dilution under dynamic (non-steady-state conditions) in the
receiving water for the permitted discharge.
According to NCDEQ's guidance on mixing zones (NCDEQ, 1999), the size of the mixing zone is to be
determined on a case-by-case basis, taking several factors into consideration such as the receiving water, extent
of mixing, and outfall configuration. For purposes of this mixing zone modeling report, dilution is reported at
several distances from the outfall, including at one-third the width of the channel, a relative distance applied as a
mixing zone for other facilities (e.g., City of Salisbury as described in NCDEQ, 1999).
'It TETRA TECH 1 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
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Figure 1-1. Location of the Bald Head Island WTP NPDES Outfall
I TETRA TECH 2 February 4, 2021

I i Modeling Report
Bald Head Island W Analysis Mixing Zone a ys s ode g ep rt
2.0 MODELING APPROACH
2.1 CORMIX
CORMIX is a comprehensive software system for the analysis of mixing zone dilution from the discharge of point
source effluent into receiving waterbodies (Doneker, 2007). The model can simulate numerous types of diffusers
(e.g., single or multi-port diffusers) under steady-state (fixed) or unsteady (dynamic) conditions. CORMIX was
initially developed in 1985 and was updated several times over the next two decades using funding provided by
several agencies, including the U.S. Environmental Protection Agency (USEPA), U.S. Bureau of Reclamation,
Cornell University, Oregon Graduate Institute, University of Karlsruhe, Germany, Portland State University, and
MixZon Inc. (Doneker, 2007). Programming languages like NEXPERT Object, an "expert systems shell", C++,
and FORTRAN were used to write CORMIX due to the complex programming requirements. While NEXPERT
was used for knowledge representation and logical reasoning, FORTRAN was used for mathematical calculations
(Doneker, 2007). The program can be used to predict the characteristics of the geometry and dilution of the initial
mixing zone to ensure compliance with the water quality regulatory constraints. The program can also be used to
study and predict the response of the plumes from the effluent discharges at larger distances (Doneker, 2007).
CORMIX has been verified by the developers, has undergone extensive peer review, and is often applied for
regulatory dilution analyses. The latest release is CORMIX v11.0, which was applied in the mixing zone study for
the Bald Head Island WTP.
There was not compelling justification to develop a more complex and costly continuous simulation model, such
as Environmental Fluid Dynamics Code (EFDC), for the Bald Head Island analysis. Given that nearfield dilution in
the marina channel (Figure 1-1) is the primary study question and that discharge is comprised primarily of RO
concentrate and is relatively small (permitted design flow rate of 0.0706 million gallons per day (MGD)) compared
with the volume of the Lower Cape Fear River Estuary, CORMIX is an appropriate model to address the study
objectives at this site. Based on a review of velocity information at a nearby National Oceanic and Atmospheric
Administration (NOAA) Tidal Current station — Fort Caswell, and mixing facilitated by boat traffic, including a ferry,
in the waterway and wind, dilution of the RO concentrate was expected to be relatively high. The CORMIX model
supported the estimation of dilution at different periods in the tidal cycle for the existing outfall and, if needed, can
be used to evaluate potential diffuser design alternatives.
2.2 MODEL DOMAIN AND SIMULATION PERIOD
The model domain, or coverage area, included the marina channel from the Lower Cape Fear River Estuary
entry/exit location to the boat slips area entry/exit location (i.e., inland-most end of the transportation channel), as
shown in Figure 2-1. The outfall is located approximately 45 meters from the marina docking area.
The efficiency of effluent mixing and the shape of the plume are influenced by the ambient temperature and
salinity of the receiving water, which determine the ambient density. The density of seawater is higher at lower
water temperatures and higher salinity. Density and salinity have been measured by the Lower Cape Fear River
Program (LCFRP) at nearby Cape Fear River Monitoring Station at Channel Marker 18 (M18). Monthly averages
are published in the LCFRP's annual reports by site (LCFRP, 2011-2016; 2019). Across the period of 2010 to
2018, the month of December tends to collectively exhibit a lower water temperature (13.3 degrees Celsius) and
higher salinity (29.0 practical salinity units, psu) (Figure 2-2). Conversely, density of seawater is lower at higher
water temperatures (26.4 degrees Celsius) and lower salinity (25.5 psu); these conditions are typically co-
observed in June. Water temperature and salinity measurements at M18 were compared to ambient samples
collected by the Village upstream and downstream of the outfall for quality assurance. The results were very
similar; the measurements from M18 were applied because the period of record was several years longer. Two
simulation periods were selected that represent conditions in June and December. This serves to bound the
It TETRA TECH 3 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
expected range in ambient density as a function of salinity and water temperature and to evaluate the impacts of
ambient density on plume geometry and dilution (Table 2-1).
. y'1' ifia,
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Figure 2-1. CORMIX Model Domain
TETRA TECH 4 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
35
30 Jul Aug
• • Sep
Jun •
•
25 Oct
May •
v •
20
Apr Nov
• •
15 Dec
Mar
••
10 Jan Feb
• •
O
5
0
22 24 26 28 30 32
Observed Salinity(psu)
Figure 2-2. Average Salinity and Water Temperature by Month Observed at Lower Cape Fear River Program
Monitoring Station M18 (2010-2018) -June and December Simulation Periods (Green Boxes)
Table 2-1. Average Salinity and Water Temperature by Month Observed at Lower Cape Fear River Program
Monitoring Station M18 (2010-2018) and Calculated Ambient Density-June and December Simulation Periods
(Green Highlight)
Month Salinity (ppt) Water Temperature (°C) Density (kg/m3)
January 24.4 9.2 1018.8
February 24.9 9.4 1019.2
March 23.9 12.5 1017.9
April 27.3 17.3 1019.6
May 25.7 22.2 1017.1
June 25.5 26.4 1015.8
July 27.6 28.7 1016.6
August 28.3 28.9 1017.1
September 29.7 28.0 1018.4
October 27.2 24.0 1017.8
November 29.6 17.1 1021.4
December 29.0 13.3 1021.7
OTETRA TECH 5 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
2.3 DATA REQUIREMENTS AND MODEL DEVELOPMENT
CORMIX requires information about the receiving channel geometry, ambient conditions in the receiving
waterbody, outfall design, and effluent properties. The sections below summarize the data that were used for
model development. Sufficient data were available to construct a CORMIX dilution analysis model for the Bald
Head Island WTP RO concentrate discharge.
2.3.1 Channel Geometry, Roughness, and Slope
Geometric properties in the discharge vicinity were specified in CORMIX. CORMIX requires that the receiving
water be represented as a rectangular channel that is either laterally bounded or unbounded. Receiving
waterbodies constrained on both sides by banks; such as rivers, are considered bounded. When the interaction of
the plume is unlikelyto reach the opposingbank e. ., a wide estuary), the system is considered unbounded. The
( 9 rY), Y
bounded option is appropriate for the site and is used for the marina channel. Aerial imagery and Light Detection
and Ranging (LiDAR) topobathymetry data for North Carolina from NOAA Fisheries Digital Coast were reviewed
in ArcGIS for channel geometry information for the study area. The 5-foot resolution LiDAR was produced as a
joint effort between NC Emergency Management, NC Geodetic Survey, and the NC Department of Transportation
(NCDOT). The elevation data were collected between late January and mid-March of 2014 (NOAA, 2014; Figure
2-3). Based on these sources, the length of the channel is 150 meters. The channel is approximately 40 meters
wide near the estuary (section about 65 meters long) and 25 meters wide near the harbor (section about 85
meters long). Therefore, a length-weighted width of 31.5 meters was applied in the model simulations. The
channel was characterized as laterally bounded and uniform. NCDWR requested that additional scenarios be
conducted using the width of the channel near the outfall (25 m). Sensitivity tests with the narrower channel width
were conducted to evaluate impacts on bank contact, plume geometry, and dilution.
lb TETRA TECH 6 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
- -:�
jLegend
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Figure 2-3. 5-foot Resolution Topobathymetric Light Detection and Ranging (LiDAR) Elevation Data (NOAA,
2014, Datum-NAVD 88)
Water depth in the marina channel was based on tidal conditions at Bald Head Island, depth measurements
collected during a site visit at approximately low tide (completed on August 28, 2020), and outfall engineering
diagrams provided by McKim & Creed. Water depth measured during the site visit at low tide was 8 feet. Tidal
cycle charts for Bald Head Island were obtained (U.S. Harbors, 2020). On the day of the site visit, the water depth
variance from low to high tide was approximately 5.1 feet (afternoon high tide at 4.51 pm — 5.1 feet and morning
low tide at 10:11 am — 0.0 feet). CORMIX requires specification of water depth at a selected instance in the tidal
cycle, ambient velocity, and the time before, at, or after slack tide are also specified for this instance in the tidal
cycle. The tidal charts for Bald Head Island apply the Mean Lower Low Water(MLLW) elevation as the reference.
The Mean Low Water (MLW) marker is 0.17 feet above MLLW(0.00 feet). The MLW is designated on the RO
outfall engineering design diagram and the MLW in the marina channel is 6.60 feet (2.01 m). Based on this
information, the marina channel water depth is 6.43 feet (1.96 m) at MLLW. Water depth at other times in the tidal
cycle was computed by summing the depth of the tide (measured with respect to MLLW) to the MLLW depth in
the channel.
In CORMIX, the roughness or friction of the channel bottom is represented through the application of Manning's n
coefficient. Manning's n values for open channel flow are typically selected from tables based on characteristics of
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Bald Head Island WTP Mixing Zone Analysis Modeling Report
the waterbody, such as substrate type, vegetation and debris, and channel shape (meandering or straight).
CORMIX automatically converts this coefficient to a Darcy-Weisbach friction factor. Channel conditions were
reviewed during the site visit to support roughness characterization. The waterway is dredged, relatively straight,
with a clean (i.e., little debris accumulated at the bottom) and sandy/muddy substrate. These features informed
the selection of a suitable Manning's n coefficient (n = 0.02) for the channel based on standard references (e.g.,
Chow, 1959).
CORMIX requires specification of bottom slope in the receiving channel. Bottom slope is measured from the bank
(i.e., location of the discharge) outwards into the receiving waterbody. The marina channel is dredged and is
expected to generally be of consistent depth across the width of the waterway. Therefore, a negligible bottom
slope was applied in the model.
2.3.2 Ambient Velocity and Density
CORMIX provides the option to represent steady ambient flow conditions or unsteady ambient flow conditions for
tidally influenced systems that exhibit reversing flows. The CORMIX model for the Bald Head Island WTP
discharge simulates unsteady flow due to the marina channel connection to the Lower Cape Fear River Estuary.
Information about the duration and timing of the tidal period was obtained from charts published by U.S. Harbors
for Bald Head Island and used to inform the tidal period duration in the model (U.S. Harbors, 2020).
Measurements of velocity through the marina channel are not available. NOAA tidal current charts provide
information about ambient velocity at select stations in this region of North Carolina. The nearest site is Fort
Caswell (CFR1625, 33.8883° N - 78.0076° W) located north of the marina in the Lower Cape Fear River. Tetra
Tech recently updated and calibrated the Jet Plume Environmental Fluid Dynamics Code (JP-EFDC) model of the
Lower Cape Fear River Estuary (Tetra Tech, 2019). The model extent, however, does not cover the marina
channel. Due to increased friction and confinement within the marina channel an alternative approach was
needed to estimate ambient velocity.
During the model plan review, NCDWR suggested a control volume approach for this purpose and the following
computation method was applied.
• For a given date, the high tide (n = 2) and low tide (n = 2) depths and associated times were collected
from the Bald Head Island Tidal charts.
• For each half tidal period (i.e., high tide to low tide) the duration and relative change in water depth were
computed.
• The change in water volume in the marina (i.e., flowing through the channel) was approximated by
multiplying the change in water depth by the surface area of the marina, which includes the marina
channel (4,725 m2) plus the marina docking area (31,350 m2).
• Flow through the marina channel due to tidal fluctuation was estimated by dividing the change in water
volume by the duration of the half tidal period.
• Instantaneous velocities over the half tidal period were then approximated with a sine curve. The
maximum velocity was assumed to occur halfway between the high and low slack tides. At each slack
tide velocity was assumed to be zero. The scaling constant was optimized to ensure the integral of the
velocity sine curve equaled the tidal exchange volume over the duration of the half tidal cycle. An
example is shown in Figure 2-4 and Table 2-2.
• The half tidal cycle exhibiting the largest change in volume on the selected day was used to approximate
the maximum velocity for the CORMIX simulation. On June 14, 2020, for example, this occurred in the
morning between high tide (3:02 AM) to low tide (9:00 AM). Maximum velocity for this scenario was 0.039
meters per second. Velocities in the channel are lower compared to the current measurements at Fort
Caswell, which often exceed 1 meter per second. This is reasonable given friction and confinement within
the marina channel.
(lb]TETRA TECH 8 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
• Instantaneous velocity at another point in the tidal cycle was applied. Model inputs, including the time
before, at, or after slack, water depth, and the configuration of the port with respect to the water surface
(i.e., submerged or above surface) were computed at the time of the velocity instance.
Ambient conditions for the CORMIX scenarios are provided in Table 2-3.
Figure 2-4. Tidal Velocity Sine Curve for the Marina Channel - June 14, 2020, High Tide (3:38 PM) to Low Tide
(9:32 PM)
0.0400
0.0350
0.0300
0.0250
E
. 0.0200
U
0
> 0.0150
0.0100
0.0050
0.0000
0 5,000 10,000 15,000 20,000 25,000
Time(sec)
Table 2-2. Approximated Tidal Velocity and Cumulative Volume Change in the Marina Channel - June 14, 2020,
High Tide (3:38 PM) to Low Tide (9:32 PM)
Time After High Tide (s) Velocity (m/s)
0 0.0000
2,124 1,937 0.0107
4,248 5,623 0.0204
6,372 10,695 0.0281
8,496 16,657 0.0330
10,620 22,927 0.0347
12,744 28,890 0.0330
14,868 33,962 0.0281
16,992 37,647 0.0204
19,116 39,584 0.0107
21,240 39,584 0.0000
It TETRA TECH 9 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
Table 2-3. Ambient Conditions for Bald Head Island CORMIX Scenarios
Outfall and
Maximum Depth Water Surface
Scenario Ambient Daily Maximum Instantaneous Corresponding Configuration
Date Density Tidal Velocity Velocity (m/s) with Corresponding
Variation (m/s) Instantaneous with
(m) Velocity (m) Instantaneous
Velocity
Low
June 5, 2020 seawater High (1.8) 0.056 0.055 2.77 Submerged
density
June 14, Low
2020 seawater Low (1.2) 0.039 0.035 2.69 Above surface
density
December High
14, 2020 seawater High (1.9) 0.062 0.059 2.77 Submerged
density
December
High
23, 2020 seawater Low (1.2) 0.039 0.035 2.66 Above surface
density
For non-freshwater systems, CORMIX requires specification of the ambient density or ambient temperature and
salinity, which are applied during the model simulation to estimate receiving water density. Realistic predictions of
water density due to salinity and temperature are crucial for characterizing mixing processes in the dilution study.
Water temperature and salinity data were available from 1996 to 2018 (2016 to 2018 data only available in annual
reports) as part of the joint venture between LCFRP and University of North Carolina Wilmington's (UNCW)
Aquatic Ecology Laboratory. Site M18 is the closest site to the study area (Figure 2-5), and data from this location
was used to characterize salinity and water temperature in the receiving waterbody for the two simulation periods,
June and December, which bound the expected ambient density conditions.
Based on the information published in the LCFRP Environmental Assessment Report for 2018, the mean salinity
concentration at the M18 station was 22.3 psu (LCFRP, 2019). The lowest salinities occurred in the late spring
and early fall due to hurricane activity and salinity in 2018 was lower compared to earlier years. Therefore, the
average salinity in June and December simulation periods from 2010 to 2018 were applied for the
characterization of ambient conditions. Data from M18 was extracted from the annual reports to determine the
representative salinity conditions.
The mean water temperature observed at M18 during 2018 was 19.1 degrees Celsius (LCFRP, 2019). Monthly
average water temperature was lowest in January at 4.7 degrees Celsius and highest in July at 29.9 degrees
Celsius. Similar to salinity, average water temperature in June and December from 2010 to 2018 was applied in
the CORMIX mixing zone model simulations.
The CORMIX pre-processing Density Calculator tool was applied to estimate ambient density from ambient
salinity and water temperature. Average densities were 1015.77 kg/m3 and 1021.69 kg/m3 for the June and
December scenarios.
lb TETRA TECH 10 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
�.
tM 1 Y.-. ,tie. ♦ «, i►af.
r.., ^^. � Legend
1;' a `. r A LCFRP Monitoring Sites
1 -.. 40
v ' ,.;. :• s' 0 Bald Head Island WTP NPDES Outfall
ta c4 .. -•` ',
Fi..
` :n r
/
:
, r
/ f
!rrirt'1'( gyp e real River r
• A.
Outfall f'� f
sc3 e 14,-' jitarekbo,40 j0 Etrathvaaaptphi Atrt ': ,
I A s•G-1 M7K4MA 4bik ygl L 018 tkac Oar t.
Lower Cape Fear River Program Monitoring Stations a o.n oas 7Ke,,, it TETRA TECH
Map produced by M Schmidt 9-1-2020 A 0 o. oe
NAD 1983 StatePlane North Carolina FIPS 3200 Feet
Figure 2-5. Nearby Lower Cape Fear River Monitoring Station — M18
2.3.3 Wind
CORMIX accounts for the impacts of wind on the hydrodynamics of the system. Wind statistics, including the
average, minimum, and maximum wind speed, by month and wind direction, are provided by WindFinder
(https://www.windfinder.com/windstatistics/bald head island) for Bald Head Island. The yearly average wind
speed at Bald Head Island is 9 miles per hour(mph)with gusts of 12 mph. The average wind speed reported for
both simulation months of June and December is also 9 mph. Continuous wind records are available at the
Wilmington International Airport; however, it is located about 42 miles away and is further inland. Therefore, the
average wind speed at Bald Head Island of 9 mph was applied in the CORMIX model as it best represents local
conditions.
2.3.4 NPDES Discharge
CORMIX is capable of simulating single port and multiport discharges. The Bald Head Island RO concentrate
outfall is a single port. Information about the port configuration, including the port diameter (0.1524 m), distance to
the nearest bank (0 m), vertical and horizontal angles, and port height above the channel bottom, was based on
specifications in engineering diagrams provided by McKim & Creed for the facility. The vertical angle is measured
lb)TETRA TECH 11 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
between the port centerline and the horizontal plane and the horizontal angle is measured counterclockwise from
the ambient current direction. Based on the engineering diagram, the outfall is directed parallel to the horizontal
plane (i.e., SIGMA = 270 degrees) and is perpendicular to the bank (i.e., THETA = 0 degrees)—this geometry
was specified in the CORMIX model.
The volumetric flow rate of the effluent to the receiving waterbody is specified in CORMIX. For dilution
quantification, it is important to represent the maximum allowable discharge rate to the marina channel.
Therefore, for the Bald Head Island WTP discharge, the dilution model will use the permitted design flow rate for
the facility, 0.0706 MGD, which corresponds with an effluent velocity of 0.1718 m/s. Actual discharge rates from
the RO system tend to be lower. In peak summer tourist season, the highest record is 0.067 MGD.
The temperature of the effluent must also be specified. Discharge monitoring reports (DMRs) were downloaded
for the facility from the ECHO Clean Water Act Search engine and database. Average effluent temperatures for
the months of June and December were 24.28°C and 16.39°C, respectively.
2.4 DILUTION ANALYSIS APPROACH
Following development of the CORMIX model, the model was applied to simulate mixing and dilution of the
effluent in the marina channel for the scenarios shown in Table 2-3. The concept of dilution is used to quantify the
degree of mixing and the transport of the effluent discharge in the system. The dilution of the effluent discharge
can be determined by the following equation:
D =
C
where, D is the dilution ratio,
Ce is the concentration of the effluent, and
C is the instream concentration.
For this assessment, a conservative tracer with a concentration of Ce was introduced into the effluent discharge. A
concentration of 100 mg/L (or 100 percent)was used as suggested in the manual for the purpose of computing
dilution ratios. Background levels of the conservative tracer will be set to zero. The mixing model was then used
to simulate the geometry of the plume and distribution of the tracer in the system such that a quasi-steady state is
achieved.
Instream concentrations along the plume centerline were used to evaluate dilution ratios at multiple distances with
respect to the outfall location. CORMIX reports dilution of the plume centerline using X and Y coordinates (in
meters) where the X axis is perpendicular to the outfall (i.e., parallel to the receiving channel) and the Y axis is
parallel to the outfall (i.e., perpendicular to the receiving channel). Geometric properties were applied to compute
the plume centerline distance (d in meters) relative to the outfall as follows:
d = X2 + Y2
The effluent flow rate was equivalent to the permitted design flow rate, which provides the dilution ratios for the
expected highest discharge from the facility.
m)TETRA TECH 12 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
3.0 MODELING RESULTS
Dilution ratios along the plume centerline are presented for the modeling scenarios inFigure 3-1. Seasonal
fluctuations in ambient conditions, including salinity, water temperature, tidal variation, and ambient velocities
through the marina channel, are shown to influence mixing and dilution of the facility's effluent. Plume geometry
and mixing dynamics differ depending on whether the outfall is submerged or situated above the water surface
(Figure 3-2 to Figure 3-5). Dilution is lower when the outfall is submerged (Figure 3-1) compared to when the
outfall is above the water surface. When the outfall is above the water surface the effluent cascades down and
this momentum projects the plume downward in the marina channel prior to multi-directional buoyant spreading
as shown in Figure 3-4 and Figure 3-5. Conversely, when the outfall is submerged the plume immediately is
subject to resistance as it enters the ambient water, concentrating the plume shape and associated constituents
in the effluent. Tabular results are provided in Table 3-1. For a mixing zone equal to one-third of the width of the
channel (i.e., 8.33 meters given the channel width is 25 meters at the outfall), the average dilution ratio is 10.
Figure 3-1. Dilution Ratios for the Bald Head Island Water Treatment Plan Discharge
25 _
20
0
0o
cc
c 15
10 '
5
f -
0 0 5 10 15 20 25 30 35 40 45 50
Plume Centerline Distance(m)
June, high tidal variation(submerged outfall)
December, high tidal variation (submerged outfall)
-June, low tidal variation(outfall above surface)
December, low tidal variation (outfall above surface)
TETRA TECH 13 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
U-
z
I _
V I
� I
N I
N I
N I
\ I
\I
BaldHeadlslandW TPDecember_HIg FWsn..gs
Discharge Excess (mg/I) Ro„czar.,pH IAs, ap arocv ema ——— PU.Cedadro >Cosda Attachment ni ine8ddy Idb.nng the l .¢ath
1 2 3 4 6 10 16 25 40 63 100 CORMlx1 s.xldm Lance ad.PI milers [d d Nea Gd0 Ream INGRI
— cmro Moe,e ee.a. ,Moo
Dwa1m Scab Yx•1 Z x•1 5
Ne.dreP+up to x•?am lout d ROl x•289 m;
Figure 3-2. Plume Geometry for December, High Tidal Variation Scenario (submerged outfall)
TETRA TECH 14 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
•
Y I
.r' I
\ I
\ I
\ I
\\ I
\I
BaldHeadIdandW TP_.hnleJ1ighTida Wsrw�
PVIe CefaMRomvan �Co da Apadrneri�mned.n+� „u�,.,,,�.�u, �si
Discharge Excess (mg/1) Ro,r0lvHusi o�r �,a.a.ems ___ �a wFpt
1 2 3 4 6 10 16 25 40 63 100 CORM xl Se.try eqn r. nrae ___ cor..Mocky eaxbev Too)
Demon Salt Y:x.1 Z:x.16
wvulonwmx.mea,drrolx.mm)
Figure 3-3. Plume Geometry for June, High Tidal Variation Scenario (submerged outfall)
11. TETRA TECH 15 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
U-
LL
Z
\\I
6aidheadIslandWTP December for
Discharge Excess (mg/I) F c 11,v2 aon Arden,Bono, ——— Pk.,ecaer►,e 1� m e is,n.= w>,.,n.,�,�.a�,.,inn n,e�I, N n�la
1 2 3 4 6 10 16 25 40 63 100 CORP",Smatom legl+uaa n mxen Nea Fold Repon INFR:
Paod,on Scale Y X.1 2 x-20 Cana Modde Bauday(MODS
4._ ) I Vaud awn w toX.197m Pa d ROI X.19'm.
Figure 3-4. Plume Geometry for December, Low Tidal Variation Scenario (outfall above surface)
l TETRA TECH 16 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
cc
t1
z
i
\ , „„,
.
z
\
N
N
I
\I
: \
t
BaldlleadlslandW TP_June_Lo.Tadar Wert.rga
Discharge Excess (m g/1) Flo»',,,IF.i Hoak*.said„ ——— Rune Cn1e Unlade >close to Bait/Sint..Boutdsti..e..dton al end a near field.
1 2 3 4 6 10 16 25 40 63 100 CORMI5I Snnl.00++ Lent"... _- CometEnd ce WA*Neff Bould ndary OD
Comm WA*Bouad.y NOD
Deutan Scab rx.l Zz."
" ill VeuelzaUonwmz.195nW ROIo.l95n1 _
Figure 3-5. Plume Geometry for June, Low Tidal Variation Scenario (outfall above surface)
74. TETRA TECH 17 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
Table 3-1. Dilution Ratios by Distance from Water Treatment Plant Outfall
High Tidal Variation Low Tidal Variation
(submerged outfall) (outfall above surface)
Distance from Outfall Average Dilution
(m) - Ratio
June December June December
1 2.7 2.7 7.1 8.3 6.0
2 5.9 5.3 7.1 8.3 6.7
3 5.9 5.3 7.1 8.3 6.7
4 5.9 5.3 11.7 13.8 9.2
5 5.9 5.3 12.2 13.8 9.3
6 6.6 6.0 12.2 14.2 9.8
7 6.6 6.0 12.5 14.6 9.9
8 6.6 6.0 12.5 14.6 9.9
8.33(1/3 width of the 6.6 6.0 12.8 14.6 10.0
channel)
9 7.1 6.0 12.8 14.9 10.2
10 7.1 6.5 12.8 15.1 10.4
11 7.1 6.5 13.0 15.1 10.4
12 7.1 6.5 13.2 15.3 10.5
13 7.8 7.0 13.2 15.5 10.9
14 7.8 7.0 13.4 15.5 10.9
15 7.8 7.0 13.4 15.7 11.0
16 7.8 7.0 13.6 15.9 11.1
17 8.5 7.7 13.7 15.9 11.5
18 8.5 7.7 13.7 16.1 11.5
19 8.5 7.7 13.9 16.2 11.6
20 9.2 7.7 13.9 16.2 11.8
21 9.2 8.4 14.1 16.4 12.0
22 9.2 8.4 14.3 16.6 12.1
23 9.2 8.4 14.3 16.6 12.1
24 10.0 8.4 14.5 16.8 12.4
25(width of the 10.0 9.1 14.5 17.0 12.7
channel)
The results presented above apply a length-weighted channel width of 31.5 meters (Section 2.3.1). Sensitivity
tests were also conducted using the width of the channel at the outfall locations, which is 25 meters. Mixing
it TETRA TECH 18 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
dynamics were not significantly altered by applying the narrower channel widths as shown by the dilution ratios
plotted in Figure 3-6.
12
0
0 9 ...... ... ....
cc ... .......
o ..
0
3
0
0 5 10 15 20 25
Plume Centerline Distance (m)
Channel width= 31.5 Channel width= 25.0 m
Note: Channel width is represented in the CORMIX model using a length-weighted average of 31.5 meters(Section 2.3.1).Channel width at
the outfall location is 25.0 meters.
Figure 3-6. Sensitivity of Channel Width on Dilution Ratios for the Bald Head Island Water Treatment Plan
Discharge (December, high tidal variation, submerged outfall)
lb TETRA TECH 19 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
4.0 SUMMARY AND CONCLUSIONS
The reverse osmosis effluent from the Village of Bald Head Island's Water Treatment Plan is discharged at a
bulkhead wall in the Bald Head Island Marina Basin channel off of the Lower Cape Fear River. The current
NPDES limits do not consider mixing in the receiving waters.
A CORMIX model was developed to simulate mixing and dilution under unsteady-state tidal conditions. The
model was developed using site-specific geometry (e.g., channel width) and ambient conditions. Salinity and
water temperature data from the Lower Cape Fear River's M18 station were applied in the approximation of
ambient density (Section 2.3.2). Scenarios were conducted for the months of June and December to bound
expected ambient density conditions in the receiving water. Average densities were 1015.77 kg/m3 and 1021.69
kg/m3 for the June and December scenarios.
Measurements of ambient velocity were not available for model development. Tidal cycle measurements from
NOAA's Fort Caswell site (CFR1625) were combined with channel geometry information to estimate ambient
velocity through the marina channel. Multiple scenarios were selected to capture the variance in tidal cycling (i.e.,
high and low tidal variation days for the months of June and December) and unsteady conditions account for re-
entrainment of the plume during the tidal reversal, which can effectively reduce dilution.
The port configuration and effluent characteristics were obtained from the facility's outfall diagrams, permit, and
Discharge Monitoring Reports (Section 2.3.4). Following model set-up for the alternative scenarios, a
conservative tracer was introduced into the effluent. Mixing dynamics within the receiving channel were simulated
and dilution ratios were quantified using the approach described in Section 2.4.
Dilution ratios along the plume centerline are presented for the modeling scenarios in Section 3.0. Seasonal
fluctuations in ambient conditions impact mixing in the receiving water, including ambient velocity through the
marina channel. Whether the outfall is submerged or situated above the water surface influences plume
trajectory, geometry, and mixing. Dilution is predicted to be lower when the outfall is submerged; the plume
remains narrower under this regime (Figure 3-3) whereas multi-directional buoyant spreading occurs when the
outfall is above the water surface, a mechanism shown to aid dilution of the effluent (Figure 3-5). For a mixing
zone equal to one-third of the width of the marina channel (i.e., 8.33 meters), the average dilution ratio based on
the CORMIX predictions is 10.0 (Table 3-1). The dilution ratio can be used by NCDWR to establish more accurate
IWC needed for permitting decisions including effluent limits and whole-effluent toxicity testing requirements.
rib]TETRA TECH 20 February 4, 2021

Bald Head Island WTP Mixing Zone Analysis Modeling Report
5.0 BIBLIOGRAPHY
Chow, V. T. 1959. Open-Channel Hydraulics. McGraw-Hill, Inc.
Doneker L. Robert, Jirka, H. Gerhard. 2007. CORMIX User Manual. A Hydrodynamic Mixing Zone Model and
Decision Support System for Pollutant Discharges into Surface Waters. EPA-823-K-07-001
nofLower Cape Fear River System, 2018. CMS Report No. 19-02.
LCFRP. 2019. Environmental Assessmentthe o p y p
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2016. Environmental Assessment of the Lower Cape Fear River System, 2015. CMS Report No. 16-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2015. Environmental Assessment of the Lower Cape Fear River System, 2014. CMS Report No. 15-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2014. Environmental Assessment of the Lower Cape Fear River System, 2013. CMS Report No. 14-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2013. Environmental Assessment of the Lower Cape Fear River System, 2012. CMS Report No. 13-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2012. Environmental Assessment of the Lower Cape Fear River System, 2011. CMS Report No. 12-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
LCFRP. 2011. Environmental Assessment of the Lower Cape Fear River System, 2010. CMS Report No. 11-02.
Center for Marine Science. University of North Carolina Wilmington. Wilmington, NC.
National Oceanic and Atmospheric Administration (NOAA) Digital Coast Data Access Viewer. Charleston, SC:
NOAA Office for Coastal Management. Accessed Aug 21, 2020 at https://coast.noaa.gov/dataviewer.
North Carolina Division of Environmental Quality, 1999. Mixing Zones in North Carolina. Accessed Jan 18, 2021
at
https://files.nc.gov/ncdeq/Water%20Quality/Surface%20Water%20Protection/NPDES/GUI DANCE/Mixing
Zones-20090710-DWQ-SWP-N PD ES.pdf
Tetra Tech. 2019. Effluent Mixing Analysis for the Cape Fear Public Utility Authority Southside and Sweeney
NPDES Outfalls. Prepared by Tetra Tech for Cape Fear Public Utility Authority, Wilmington, North
Carolina.
US Harbors. 2020. Tides in Bald Head, NC. Retrieved August 28, 2020, from
https://www.usharbors.com/harbor/North-Carolina/Bald-Head-nc/tides
it TETRA TECH 21 February 4, 2021

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
ATTACHMENT C — EMAIL FROM NCDWR APPROVING CORMIX MODEL
AND REQUESTING SENSITIVITY ANALYSIS
Email from NCDWR approving CORMIX model
and requesting sensitivity analysis
TETRA TECH August 13, 2021

From: Hill, David A
To: Clements,Trevor
Cc: Young. Brianna A;Schmidt,Michelle
Subject: Re: [External]RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Date: Thursday,March 4,2021 3:53:58 PM
Hello Trevor,
We find the model adequate for characterizing BHI's discharge. Could you please provide the
session and prediction files (pdf readable) for the scenarios you selected along with additional
scenario runs using the maximum and minimum daily flows from your DMR record for the
facility. As the December high tide scenario looks to be the more limiting condition, please
provide additional sensitivity analysis for temperature and salinity in both the ambient and
effluent variables for that scenario. We do not need any of the output files for this latter
request,just summarize the sensitivity analysis in table or graph. Let me know if you have any
questions.
Thanks,
David Hill
Environmental Specialist 11
Industrial Permitting Unit
**Email preferred during this time*
NC DEQ/Division of Water Resources/Water Quality Permitting Section
NPDES Industrial Permitting Unit
919 707 3612 office
919 707 9000 main office
david.hill(a ncdenr.gov
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Clements,Trevor<[e-mail]>
Sent:Thursday, March 4, 2021 2:29 PM
To: Hill, David A<[e-mail]>
Cc: Young, Brianna A<[e-mail]>; Schmidt, Michelle
<[e-mail]>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
CAUTION:External email. Do not click links or open attachments unless you verify.Send all suspicious email as an
attachment to Report Spam.
David,
Are you able to provide an estimated time for comments?

Thanks,
Trevor
From: Clements,Trevor
Sent: Monday, February 22, 2021 10:17 AM
To: Hill, David A<[e-mail]>
Cc:Young, Brianna A<[e-mail]>; Schmidt, Michelle
<[e-mail]>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Good Morning David,
Just checking in with you about the BHI mixing zone report. Did you have any questions and can you
let us know when we will likely be hearing back from you?
Thank you,
Trevor
Trevor Clements I Principal/Program Manager
Direct:919.485.2058 I Main: 919.485.8278 I Fax: [phone]
[e-mail]
Tetra Tech Engineering P.C.I Complex World,Clear Solutions
P.O. Box 14409 11 Park Drive, Suite 200 I Research Triangle Park, NC 27709 I www.tetratech.com
PLEASE NOTE:This message, including any attachments, may include privileged,confidential and/or inside information.
Any distribution or use of this communication by anyone other than the intended recipient is strictly prohibited and may be
unlawful. If you are not the intended recipient, please notify the sender by replying to this message and then delete it from
your system.
From:Young, Brianna A<Brianna.YounOncdenr.gov>
Sent: Monday, February 15, 2021 11:13 AM
To: Clements,Trevor<Trevor.ClementsPtetratech.com>
Cc: Hill, David A<david.hill(Wncdenr.gov>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Hello Trevor,
DEQ staff reviewed the report last week, and I believe David Hill is going to be reaching out to you
with follow-up comments (if he has not already). Please let me know if you would still like to
schedule a meeting to discuss.
Thank you,
Brianna Young, MS

Environmental Specialist II
Compliance and Expedited Permitting Unit
NC DEQ/Division of Water Resources
Office: 919-707-3619
Brianna.Youngla�ncdenr.gov (e-mail preferred during State of Emergency)
Mailing address: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental
Quality has adjusted operations to protect the health and safety of the staff and public. Many employees
are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office
locations are limiting public access to appointments only. Please check with the appropriate staff before
visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.
From: Clements,Trevor<Trevor.ClementsPtetratech.com>
Sent: Friday, February 05, 2021 3:03 PM
To:Young, Brianna A<Brianna.YoungPncdenr.gov>
Cc: Hill, David A<david.hillPncdenr.gov>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
CAUTION:External email. Do not click links or open attachments unless you verify.Send all suspicious email as an
attachment to Report Spam.
Brianna,
That's great. Thank you for the confirmation. We look forward to getting a meeting date on
everyone's calendar knowing the challenge that coordinating so many schedules poses.
Much appreciated and have a great weekend,
Trevor
From:Young, Brianna A<Brianna.Young( ncdenr.g_pv>
Sent: Friday, February 5, 2021 2:58 PM
To: Clements,Trevor<Trevor.Clements tetratech.com>
Cc: Hill, David A<david.hilk ncdenr.gov>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Hello Trevor,
Yes, I did receive your email. DWR staff will be meeting in the coming week to take an initial look at
the report. I can check with DWR staff on their schedules for the remainder of March to determine
potential meeting dates as well.

Thank you,
Brianna Young, MS
Environmental Specialist II
Compliance and Expedited Permitting Unit
NC DEQ/Division of Water Resources
Office: 919-707-3619
[e-mail] (e-mail preferred during State of Emergency)
Mailing address: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental
Quality has adjusted operations to protect the health and safety of the staff and public. Many employees
are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office
locations are limiting public access to appointments only. Please check with the appropriate staff before
visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.
From: Clements, Trevor<[e-mail]>
Sent: Friday, February 05, 2021 2:18 PM
To: Young, Brianna A<Brianna.YoungPncdenr.gov>
Subject: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
CAUTION:External email. Do not click links or open attachments unless you verify.Send all suspicious email as an
attachment to Report Spam.
Hi Brianna,
Just checking to make sure that you received our request. Please confirm.
Thank you,
Trevor
From: Clements,Trevor
Sent:Thursday, February 4, 20214:38 PM
To:Young, Brianna A<Brianna.YoungPncdenr.gov>
Cc: Montebello, Michael J <Michael.Montebelloc ncdenr.gov>; Hill, David A
<david.hill aPncdenr.gov>; Morella King<morella.sanchez-kingPncdenr.gov>;Tom Tharrington
<tom.tharringtonPncdenr.gov>;JP McCann <jmccannPvillagebhi.org>;Tony Boahn
(TBOAHN( mckimcreed.com) <tboahnc mckimcreed.com>; Schmidt, Michelle
<Michelle.Schmidt@ tetratech.com>
Subject: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal

Good Afternoon Brianna,
On behalf of the Village of Bald Head Island and the consulting team, I am pleased to submit our
Mixing Zone Analysis report for your review and consideration in modifying the instream waste
concentrations for toxicant limits and whole effluent toxicity requirements in the WTP reverse
osmosis concentrate discharge (NPDES No. NC0085553). The effort followed the Modeling Plan
discussed with and approved by DEQ during our virtual meeting on November 19, 2020. During that
meeting, the Tetra Tech modeling team agreed to make a couple of revisions to our approach which
were made and are documented in the attached report as requested by David Hill. The contents of
the Modeling Plan were incorporated directly into the report to document the approach applied.
As a side note, the Village recognizes that DEQ will want to see background monitoring information
to be able to complete the Reasonable Potential Analysis (RPA) to support effluent limits and
monitoring requirement decisions for specific parameters.The Village is in the process of contracting
with a vendor to conduct the monitoring and laboratory analysis. The contractor and consulting
team will submit the proposed monitoring plan for your review prior to conducting the work.
In the interim, we would like to receive any comments or questions on the Mixing Zone Analysis
report as soon as possible so that DEQ will have the necessary mixing assumptions ready to apply for
the Village's revised permit limitations when the background concentrations for the relevant
toxicants are also available.
Please let us know if you have any questions or would like to discuss anything further. We would
appreciate your acknowledgement of receipt of this report, and also getting something on your
calendar in mid March to discuss any agency comments or questions regarding the Mixing Zone
Analysis report. Please provide some potential dates and times and we will look for a mutually
available time.
Thank you,
Trevor
Trevor Clements I Principal/Program Manager
Direct: 919.485.2058 I Main: 919.485.8278 I Fax: [phone]
[e-mail]
Tetra Tech Engineering P.C.I Complex World,Clear Solutions
P.O. Box 14409 I 1 Park Drive,Suite 200 I Research Triangle Park, NC 27709 I www.tetratech.com
PLEASE NOTE:This message, including any attachments, may include privileged, confidential and/or inside information.
Any distribution or use of this communication by anyone other than the intended recipient is strictly prohibited and may be
unlawful. If you are not the intended recipient, please notify the sender by replying to this message and then delete it from
your system.

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
ATTACHMENT D — MODEL SENSITIVITY ANALYSIS RESULTS AND TETRA
TECH RECOMMENDATIONS FOR MIXING ZONE DILUTION RATIOS
Model sensitivity analysis results and tetra tech
recommendations for mixing zone dilution ratios
it,TETRA TECH August 13, 2021

From: Clements.Trevor
To: Hill, David A;Young.Brianna A
Cc: Schmidt.Michelle;JP McCann;Tony Boahn(TBOAHN(amckimcreed.com)
Subject: RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Date: Wednesday,March 17,2021 3:09:00 PM
Attachments: BHI Sensitivity Test Table Tt 3-17-21.odf
David and Brianna,
This email is to follow up on our previous email and conversation on 3/15/21. The attached tables
show the sensitivity to a 25 percent change in either direction for ambient temperature, ambient
salinity, and effluent temperature.The first table indicates the impact on the dilution ratio under
high tidal variation observed in December, and the second shows the results in terms of percent
change from the original output. As we might expect,the output is slightly more sensitive to salinity
than temperature, but in all cases the 25 percent change produced much lower change in dilution
ratio ranging from approximately zero for temperature to about 11 percent for lower salinities.
As we discussed on the phone, we think it is important in making your final decision for the Village of
Bald Head Island permit to consider the time frame appropriate for human health criteria, as well as
acute and chronic aquatic life criteria.The human health and chronic aquatic life criteria reflect long-
term exposure.Therefore, although CORMIX is not well suited to predict long-term average dilution,
at a minimum we can consider the tidally-averaged condition (i.e.,the average across the low and
high tidal variation scenarios) as appropriate for these two criteria. Additionally, given the relatively
short distance that 1/3rd the inlet channel represents (8.33 m or 27 ft) along with the conservative
assumption of maximum concentration along the plume centerline instead of the radial average at
the distance from the outfall, we believe it makes sense to give the full 8.33 m for the chronic and
human health criteria. In this case that would result in using a dilution ratio of 10:1 for the tidally-
averaged mixing, and an instream waste concentration (IWC) for chronic testing of 10 percent.
For any future application of acute aquatic life criteria, we recommend using the average dilution
across the low and high tidal variation scenarios for the most limiting month (June) but restricting it
to the near-field initial mixing. Average dilution ratio remains similar within the first 3 m or roughly
10 ft which seems appropriate to capture initial mixing.Thus, for the acute dilution ratio we would
recommend using 6.5:1.
We realize that the final piece of the information needed to complete reasonable potential analysis
and wasteload allocation determinations will be receipt of the background concentrations.The
Village is working with a field and lab analysis contractor to obtain this information and it will be
shared as soon as possible to complete the process.
In the interim, we would appreciate any further feedback for efforts to this point.
Sincerely,
Trevor
Trevor Clements I Principal/Program Manager
Direct:919.485.2058 I Main: 919.485.8278 I Fax:[phone]

Dilution ratios by distance from outfall for December high tidal variation sensitivity tests
Distance Effluent Ambient Ambient Salinity
from Outfall Current Temperature Temperature
Condition
(m) -25% +25% -25% +25% -25% +25%
1 2.7 2.7 2.7 2.7 2.7 2.8 2.9
2 5.3 5.4 5.3 5.4 5.4 5.8 5.1
3 5.3 5.4 5.3 5.4 5.4 5.8 5.1
4 5.3 5.4 5.3 5.4 5.4 5.8 5.1
5 5.3 5.4 5.3 5.4 5.4 5.8 5.7
6 6.0 6.1 6.0 6.0 6.1 6.5 5.7
7 6.0 6.1 6.0 6.0 6.1 6.5 5.7
8 6.0 6.1 6.0 6.0 6.1 6.5 5.7
8.33(1/3 6.0 6.1 6.0 6.0 6.1 6.5 5.7
width of the
channel)
9 6.0 6.1 6.0 6.0 6.1 6.5 6.2
10 6.5 6.5 6.5 6.5 6.5 7.0 6.2
11 6.5 6.5 6.5 6.5 6.5 7.0 6.2
12 6.5 6.5 6.5 6.5 6.5 7.0 6.2
13 7.0 7.1 7.0 7.0 7.1 7.0 6.7
14 7.0 7.1 7.0 7.0 7.1 7.7 6.7
15 7.0 7.1 7.0 7.0 7.1 7.7 6.7
16 7.0 7.1 7.0 7.0 7.1 7.7 7.2
17 7.7 7.8 7.7 7.7 7.8 7.7 7.2
18 7.7 7.8 7.7 7.7 7.8 8.5 7.2
19 7.7 7.8 7.7 7.7 7.8 8.5 7.2
20 7.7 7.8 7.7 7.7 7.8 8.5 7.9
21 8.4 8.5 8.4 8.4 8.5 8.5 7.9
22 8.4 8.5 8.4 8.4 8.5 9.3 7.9
23 8.4 8.5 8.4 8.4 8.5 9.3 7.9
24 8.4 8.5 8.4 8.4 8.5 9.3 8.5
25(width of 9.1 9.2 9.1 9.1 9.2 9.3 8.5
the channel)

Percent change in dilution ratio relative to current condition by distance from outfall for December high
tidal variation sensitivity tests
Effluent Ambient Ambient Salinity
Distance Temperature Temperature
from Outfall
(m) -25% +25% -25% +25% -25% +25%
1 <0.1% <0.1% <0.1% <0.1% 3.7% 7.4%
2 1.9% <0.1% 1.9% 1.9% 9.4% -3.8%
3 1.9% <0.1% 1.9% 1.9% 9.4% -3.8%
1.9% 01.9% 1.9% 0
4 <0.1/0 9.4/0 -3.8%
5 1.9% <0.1% 1.9% 1.9% 9.4% 7.5%
6 1.7% <0.1% <0.1% 1.7% 8.3% -5.0%
7 1.7% <0.1% <0.1% 1.7% 8.3% -5.0%
8 1.7% <0.1% <0.1% 1.7% 8.3% -5.0%
8.33 (1/3
width of the 1.7% <0.1% <0.1% 1.7% 8.3% -5.0%
channel)
9 1.7% <0.1% <0.1% 1.7% 8.3% 3.3%
10 <0.1% <0.1% <0.1% <0.1% 7.7% -4.6%
11 <0.1% <0.1% <0.1% < 0.1% 7.7% -4.6%
12 <0.1% <0.1% <0.1% <0.1% 7.7% -4.6%
13 1.4% <0.1% <0.1% 1.4% <0.1% -4.3%
14 1.4% <0.1% <0.1% 1.4% 10.0% -4.3%
15 1.4% <0.1% <0.1% 1.4% 10.0% -4.3%
16 1.4% <0.1% <0.1% 1.4% 10.0% 2.9%
17 1.3% <0.1% <0.1% 1.3% <0.1% -6.5%
18 1.3% <0.1% <0.1% 1.3% 10.4% -6.5%
19 1.3% <0.1% <0.1% 1.3% 10.4% -6.5%
20 1.3% <0.1% <0.1% 1.3% 10.4% 2.6%
21 1.2% <0.1% <0.1% 1.2% 1.2% -6.0%
22 1.2% <0.1% <0.1% 1.2% 10.7% -6.0%
23 1.2% <0.1% <0.1% 1.2% 10.7% -6.0%
24 1.2% <0.1% <0.1% 1.2% 10.7% 1.2%
25(width of
the channel) 1.1% <0.1% <0.1% 1.1% 2.2% -6.6%

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
ATTACHMENT E — DRAFT BACKGROUND METALS MONITORING PLAN
Draft Background Metals Monitoring Plan
[Thl TETRA TECH August 13, 2021

Background Sampling Plan for Bald Head
Island Water Treatment Plant NPDES
Outfall
January 26, 2021
PREPARED FOR PREPARED BY
North Carolina DEQ/Division of Water Tetra Tech, Inc.
Resources One Park Drive, Suite 200
512 North Salisbury Street PO Box 14409
1617 Mail Service Center Research Triangle Park,
Raleigh, NC 27699-1617 NC 27709
Tel [phone]
REVIEWED AND SUBMITTED BY
McKim & Creed
243 North Front Street
Wilmington, NC 28401
Tel [phone]

Background Sampling Plan Bald Head Island WTP
1 .0 INTRODUCTION
The North Carolina Department of Environmental Quality (DEQ) has advised the Village of Bald Head Island that
it will need to complete background dissolved arsenic sampling to support permit limit development for the
Village's Water Treatment Plan (WTP, NPDES NC0085553). The facility discharges reverse osmosis (RO)
concentrate water to a bulkhead wall in the Bald Head Island Mariana Basin Channel (Cape Fear River Basin -
HUC 0303000508), as shown in Figure 1. This report describes the objectives and a general plan for the
background sampling effort.
Wiflfl '
Legend
(11r{1 u
Bald Head Island WTP NPDES Outfall
Bruns,"
Couni,
Carolina Beach
. Kure Beach.
Bald Head •
Island Marina
) / ttls Southport
/ ,,„i Iaiu1.
-11
•
S 111(
•* p
grO• t u'c- ��D it IS be -•• -
,E t sttrG ogr c�v ,''1'6'1,
i USDA i,s )rJ National Geographic.Esri Garmin.HERE.UNEP-WCMC.USGS.NASA ESA
a-0J.019 GjS - lamtaxr7k METI NRCAN GEBCO.NOAA.increment P Corp
Bald Head Island WTP NPDES Outfall - mni=monimil It TETRA TECH
Map produced by M Schmidt 8-6-2020 , j
NAD 1983 StatePlane North Carolina FIPS 3200 Feet
Figure 1. Location of the Bald Head Island WTP NPDES Outfall
-rt TETRA TECH 2 January XX, 2021

Background Sampling Plan Bald Head Island WTP
2.0 BACKGROUND SAMPLING
The following subsections describe the background sampling plan for the Village of Bald Head Island's WTP.
2.1 MONITORING OBJECTIVE AND COMPONENTS
This monitoring plan was developed to help ensure that the results are representative of the sampled environment
and are scientifically and legally defensible. The objective of this monitoring effort is to collect grab samples to
characterize background (i.e., upstream) concentrations of the following constituents:
• Dissolved arsenic
• Dissolved copper
• Dissolved zinc
North Carolina water quality standards are set as dissolved metals; thus, measurement of the dissolved form is
needed for background sampling. DEQ has indicated that they will apply a saltwater translator in the Reasonable
Potential Analysis (RPA) for the NPDES permit to convert from the dissolved form of the metal to the total form.
Based on findings from the RPA, DEQ may establish specific acute and chronic metals effluent limits.
2.2 PRE-FIELD STUDY PLANNING
The selected background sampling team will plan and finalize the logistics and methodologies to be used for the
background sampling effort. This will include the following:
• Equipment procurement, including boat, field log books, collection and storage equipment, GPS Unit,
extra batteries for GPS unit and other equipment, camera, site map, first aid kit, and other needed items
• Arrangements with a NCDEQ-certified laboratory for dissolved arsenic, copper, and zinc analyses
• Field sampling methodology plan based on requirements specified for the analytical methods
• Advance notification of appropriate contacts before planned field work events (e.g., the Bald Head Island
marina)
• Checking the weather to ensure safe and reasonable conditions for the sampling event day
• Reviewing tidal charts to determine targeted sample collection times (see Section 2.3 for additional
information)
A brief memorandum documenting the methodology and field plan must be submitted to the Village of Bald Head
Island and McKim & Creek prior to conducting the reconnaissance study.
2.3 SAMPLING PROCEDURES
The sampling team will conduct background metals sampling using a boat crew of at least two passengers: a
driver and a field person; a third team member may be required based on the analytical method (e.g., if a "clean
hands" member and "dirty hands" member are needed for sample collection and processing plus the boat driver).
The field person(s)will be responsible for collecting, documenting, and storing the background samples.
Samples must be collected to measure dissolved arsenic, copper, and zinc. The sampling techniques will be
conducted using approved methodologies endorsed by NCDEQ for surface waters. Detection limits and
quantification levels need to be appropriate for the applicable North Carolina surface water quality standards (e.g.,
be able to detect concentrations of dissolved copper lower than the chronic standard of 3.1 pg/L). The associated
Standard Operating Procedures (SOPs) are to be followed. Samples must be collected with new, verified, and
certified-clean equipment. Filtering and/or acid preservation using clean hands and equipment will be conducted
onsite as required by the analytical method.
One or more waterproof field log books must be maintained for recording data collection activities performed
during the study. The general principle of information recording is that all entries be sufficient to reconstruct the
It]TETRA TECH 3 January 26, 2021

Background Sampling Plan Bald Head Island WTP
site investigation without reliance on memory. All field measurements from samples collected will be recorded.
Wherever a sample is collected, at a minimum, the following will be recorded:
• Sample collection location (i.e., coordinates)
• Field observations (e.g., wave conditions)
• Date and time
• Correspondence with high or low tide
• Sampling challenges or quality assurance issues
• Sample depth
• Sampling team member names
To ensure consistency, a standardized form will be developed by the monitoring team prior to the background
sampling effort and applied throughout the study duration. Each section of the form will be completed with an ink
pen. Any information not applicable to a certain site will be flagged as"NA". Additionally, digital photographs
documenting the sampling locations (i.e., showing the orientation to the surrounding area and nearby objects)
should be taken and included in the documentation. For each photograph documentation in the log book should
include, the assigned photograph number, field date, and subject.
Per DEQ recommendations, one sample should be collected around high tide and one sample should be
collected around low tide. The monitoring team should review the Bald Head Island tidal charts (e.g., from U.S.
Harbors, site#8658901) in advance of the sampling event and identify high and low tide times for collecting the
samples. For example, on January 26, 2021, the low tide sample could have been collected around 11:54 AM and
the high tide sample could have been collected around 6:00 PM. The high and low tide samples need to be
collected on the same day. DEQ has also specified that samples be collected once per week for four weeks,
resulting in (at least) eight samples per constituent for the full background sampling effort. Seasonal sampling is
not required; thus, the background monitoring effort can be conducted any time of the year.
Duplicate samples will provide precision information about the measurement system as a whole, which integrates
precision of sample collection, handling, and analysis procedures implemented by the laboratory. DEQ has not
specifically required duplicate samples, however, it is recommended that at least one duplicate field sample be
collected over the course of the monitoring effort for the analytes (i.e., arsenic, copper, and zinc). In addition to
the field duplicate, it is recommended that the laboratory completes at least one lab duplicate and at least one
method blank for quality assurance purposes.
The background sampling location must be outside of the facility's mixing zone and in the receiving water near but
above the wastewater discharge and unaffected by the discharge. The maximum expected mixing zone is the
width of the marina channel (approximately 25 m at the outfall location). Background samples should be collected
in the Lower Cape Fear River Estuary between Fort Caswell and the Bald Head Island Marina. This area is far
outside the mixing zone and it is appropriate for assessing background conditions, which are influenced by
freshwater flow from the Cape Fear River and ocean water. Given the relatively small volumetric flow rate of the
discharge and vibrant dynamics of the estuary, this vicinity is not expected to be influenced by the discharge. An
example background sampling location is shown in Figure 2.
it TETRA TECH 4 January 26, 2021

Background Sampling Plan Bald Head Island WTP
40.
Example Background Sampling Location
410.
; �.
NPDES Outfall
&um, igita'GI ,+,©J f,4, •lf.Uk arapt \a8NA1tb1>_,1
kaM.t.GS Aero, ;i6 ,altJ ^0^ aG�7r311inrril�y
Example Background Metals Sampling Site
Map produced by M Schmidt 1-26-2021 it
TETRA TECH
NAD 1983 StatePlane North Carolina FIPS 3200 Feet
Figure 2. Example Background Sampling Location
2.4 QUALITY ASSURANCE
Laboratory instruments and equipment will be maintained according to the schedule and procedures established
by the analytical method. Maintenance of field instruments will be based on the manufacturer's instructions and
the amount of use that the instruments receive. Maintenance records will be maintained in the logbook for the
study.
The sampling team must review and organize the results provided by the laboratory. The data must be reviewed
for outliers/anomalies and such findings documented, provided to, and discussed with the Village of Bald Head
Island and McKim & Creed.
Duplicate samples will be reviewed after receipt of the laboratory results. Duplicate samples with a relative
percent difference greater than 10 percent will initiate a corrective action sequence that may involve collection of
additional samples or refinements to the methodologies employed.
Quality assurance measures implemented in the study must be described in the sampling report. This will include
an assessment of measurement data accuracy, precision, and completeness, and any significant QA problems
and recommended solutions. The sampling memorandum will be submitted to the Village of Bald Head Island and
McKim & Creed. It will ultimately be provided to NCDEQ for permit applications.
lJ TETRA TECH 5 January 26, 2021

Background Sampling Plan Bald Head Island WTP
2.5 CUSTODY DOCUMENTATION
Chain-of-custody forms need to be maintained as the normal procedure to ensure samples are traceable from
collection to receipt at the analyzing laboratory. The custody forms will include the name and the person
delivering the samples, the date and time of delivery, project number, collection location, sample ID, and date and
time of collection. The chain-of-custody documentation will accompany samples and be provided to the Village of
Bald Head Island and McKim & Creed with the laboratory results.
2.6 HEALTH AND SAFETY PLAN
It is recommended that the sampling team develops a Health & Safety Plan (HASP) for each planned field
sampling event. The purpose of the HASP is to guide appropriate actions while conducting the water quality
assessments. It should include emergency contact information, local hospital and emergency room information,
and daily HASP-related checklists to be completed prior to field work. It is the responsibility of each staff member
participating the field reconnaissance to know and implement the HASP.
2.7 REPORTING
A brief memorandum must be prepared summarizing the dissolved arsenic, copper, and zinc sampling results.
The draft memorandum will be submitted to the Village of Bald Head Island and McKim & Creed for review and
comment. The sampling team will address the comments and revise the memorandum as necessary. The final
memorandum will be provided to NCDEQ by the Village for permitting purposes.
MI TETRA TECH 6 January 26, 2021

Background Sampling Plan Bald Head Island WTP
3.0 BIBLIOGRAPHY
Tetra Tech. 2021. Mixing Zone Analysis for Bald Head Island Water Treatment Plant NPDES Outfall
(NC0085553). Prepared by Tetra Tech for North Carolina DEQ/Division of Water Quality, Raleigh, North
Carolina.
TETRA TECH 7 January 26, 2021

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
ATTACHMENT F — EMAIL CORRESPONDENCE SUBMITTING
BACKGROUND METALS MONITORING RESULTS
Email correspondence submitting
background metals monitoring results
lb,TETRA TECH August 13, 2021

From: Clements.Trevor
To: "Hill. David A";"Youna.Brianna A"
Cc: Schmidt.Michelle;"JP McCann";Tony Boahn ITBOAHNfalmckimcreed.com'
Subject: RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Date: Thursday,June 10,2021 3:35:00 PM
Attachments: BkadMetals SummarvTable.xlsx
BALD HEAD-CFR BACKGROUND-REVISED-21-06010-4-14-21.odf
BALD HEAD-21-06680-4-27-21.odf
BALD HEAD-CAPE FEAR RNER-21-07451-5-7-21.odf
BALD HEAD-CAPE FEAR RIVER-21-08263-5-21-21.odf
BaldHeadIsland BackaroundSamolinaSites 2021.ioq
David and Brianna,
Good news...the monitoring and lab analysis for background concentrations of the identified metals
(As, Cu, Zn) was completed by Environmental Chemists and we received the final of the 4 data sets
this week(collected between April 14 and May 21) at the two monitoring locations (river and
marina, map attached with lat/long coordinates). The lab reports are attached for verification, and
we summarized the data in the attached Excel file with high or low tide time provided for
referencing to the timing of both sets of data collection for each sampling day.
As you will note, all samples were found to be below detection levels, which is also good news.This
indicates that observable build-up of metals concentrations in the marina associated with the
discharge of WTP concentrate from the Village is unlikely which I think everyone is glad to see.
Please use this information along with the previous submittals to calculate your revised NPDES limits
for the facility. We look forward to reviewing the proposed limits and discussing any of our previous
analyses and recommendations further with you as needed.
Thank you,
Trevor
Trevor Clements I Principal/Program Manager
Direct: 919.485.2058 I Main: 919.485.8278 I Cell: 919.328.0175
[e-mail]
Tetra Tech Engineering P.C. I Complex World,Clear Solutions
P.O. Box 14409 I 1 Park Drive,Suite 200 I Research Triangle Park, NC 27709 I www.tetratech.com
PLEASE NOTE:This message, including any attachments, may include privileged,confidential and/or inside information.
Any distribution or use of this communication by anyone other than the intended recipient is strictly prohibited and may be
unlawful. If you are not the intended recipient,please notify the sender by replying to this message and then delete it from
your system.
From: Clements,Trevor
Sent: Wednesday, March 17, 2021 3:10 PM
To: Hill, David A<[e-mail]>; Young, Brianna A<[e-mail]>
Cc:Schmidt, Michelle<[e-mail]>;JP McCann <[e-mail]>;

Tony Boahn ([e-mail]) <[e-mail]>
Subject: RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report
Submittal
David and Brianna,
This email is to follow up on our previous email and conversation on 3/15/21. The attached tables
show the sensitivity to a 25 percent change in either direction for ambient temperature, ambient
salinity, and effluent temperature.The first table indicates the impact on the dilution ratio under
high tidal variation observed in December, and the second shows the results in terms of percent
change from the original output. As we might expect, the output is slightly more sensitive to salinity
than temperature, but in all cases the 25 percent change produced much lower change in dilution
ratio ranging from approximately zero for temperature to about 11 percent for lower salinities.
As we discussed on the phone, we think it is important in making your final decision for the Village of
Bald Head Island permit to consider the time frame appropriate for human health criteria, as well as
acute and chronic aquatic life criteria. The human health and chronic aquatic life criteria reflect long-
term exposure.Therefore, although CORMIX is not well suited to predict long-term average dilution,
at a minimum we can consider the tidally-averaged condition (i.e.,the average across the low and
high tidal variation scenarios) as appropriate for these two criteria. Additionally, given the relatively
short distance that 1/3rd the inlet channel represents (8.33 m or 27 ft) along with the conservative
assumption of maximum concentration along the plume centerline instead of the radial average at
the distance from the outfall, we believe it makes sense to give the full 8.33 m for the chronic and
human health criteria. In this case that would result in using a dilution ratio of 10:1 for the tidally-
averaged mixing, and an instream waste concentration (IWC) for chronic testing of 10 percent.
For any future application of acute aquatic life criteria, we recommend using the average dilution
across the low and high tidal variation scenarios for the most limiting month (June) but restricting it
to the near-field initial mixing. Average dilution ratio remains similar within the first 3 m or roughly
10 ft which seems appropriate to capture initial mixing.Thus, for the acute dilution ratio we would
recommend using 6.5:1.
We realize that the final piece of the information needed to complete reasonable potential analysis
and wasteload allocation determinations will be receipt of the background concentrations. The
Village is working with a field and lab analysis contractor to obtain this information and it will be
shared as soon as possible to complete the process.
In the interim, we would appreciate any further feedback for efforts to this point.
Sincerely,
Trevor
Trevor Clements I Principal/Program Manager
Direct 919.485 2058 I Main. 919.485 8278 I Fax: [phone]
trevo [e-mail]

Tetra Tech Engineering P.C.I Complex World,Clear Solutions
P.O. Box 14409 I 1 Park Drive, Suite 200 I Research Triangle Park, NC 27709 I www.tetratech.com
PLEASE NOTE:This message, including any attachments, may include privileged,confidential and/or inside information.
Any distribution or use of this communication by anyone other than the intended recipient is strictly prohibited and may be
unlawful. If you are not the intended recipient, please notify the sender by replying to this message and then delete it from
your system.
From: Clements,Trevor
Sent:Wednesday, March 10, 2021 10:38 AM
To: Hill, David A<[e-mail]>
Cc:Young, Brianna A<Brianna.YoungPncdenr.gov>; Schmidt, Michelle
<[e-mail]>
Subject: REQUEST FOR CALL RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis
Report Submittal
Hello David,
The pdf readable files are attached for your review and use. We would like to speak with you
however regarding the additional request before proceeding. We have some questions and thoughts
that will be easier to handle over the phone. Are you and Brianna both available either tomorrow
morning or Friday morning for a TEAMS call to talk through a couple of things. I don't think it would
take more than 30 minutes and maybe not even that long.
Thanks,
Trevor
From: Hill, David A<david.hillPncdenr.gov>
Sent:Thursday, March 4, 2021 3:54 PM
To: Clements,Trevor<Trevor.ClementsPtetratech.com>
Cc:Young, Brianna A<[e-mail]>; Schmidt, Michelle
<[e-mail]>
Subject: Re: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Hello Trevor,
We find the model adequate for characterizing BHI's discharge. Could you please provide the
session and prediction files (pdf readable) for the scenarios you selected along with additional
scenario runs using the maximum and minimum daily flows from your DMR record for the
facility. As the December high tide scenario looks to be the more limiting condition, please
provide additional sensitivity analysis for temperature and salinity in both the ambient and
effluent variables for that scenario. We do not need any of the output files for this latter
request,just summarize the sensitivity analysis in table or graph. Let me know if you have any
questions.

Thanks,
David Hill
Environmental Specialist II
Industrial Permitting Unit
**Email preferred during this time*
NC DEQ/ Division of Water Resources/Water Quality Permitting Section
NPDES Industrial Permitting Unit
919 707 3612 office
919 707 9000 main office
david.hill(a�ncdenr.gov
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Clements,Trevor<Trevor.ClementsPtetratech.com>
Sent:Thursday, March 4, 2021 2:29 PM
To: Hill, David A<david.hillPncdenr.gov>
Cc: Young, Brianna A<Brianna.YoungPncdenr.gov>; Schmidt, Michelle
<Michelle.SchmidtPtetratech.com>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
CAUTION: External email. Do not click links or open attachments unless you verify.Send all suspicious email as an
attachment to Report Spam.
David,
Are you able to provide an estimated time for comments?
Thanks,
Trevor

From: Clements,Trevor
Sent: Monday, February 22, 2021 10:17 AM
To: Hill, David A<david.hillPncdenr.gov>
Cc:Young, Brianna A<Brianna.YoungPncdenr.gov>; Schmidt, Michelle
<Michel le.SchmidtPtetratech.com>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Good Morning David,
Just checking in with you about the BHI mixing zone report. Did you have any questions and can you
let us know when we will likely be hearing back from you?
Thank you,
Trevor
Trevor Clements I Principal/Program Manager
Direct:919.485.2058 I Main: 919.485.8278 I Fax:[phone]
trevor.clementsQtetratech.com
Tetra Tech Engineering P.C. I Complex World,Clear Solutions
P.O. Box 14409 11 Park Drive, Suite 200 I Research Triangle Park, NC 27709 I www.tetratech.com
PLEASE NOTE:This message, including any attachments, may include privileged,confidential and/or inside information.
Any distribution or use of this communication by anyone other than the intended recipient is strictly prohibited and may be
unlawful. If you are not the intended recipient, please notify the sender by replying to this message and then delete it from
your system.
From:Young, Brianna A<Brianna.YoungPncdenr.gov>
Sent: Monday, February 15, 2021 11:13 AM
To: Clements,Trevor<Trevor.ClementsPtetratech.com>
Cc: Hill, David A<david.hillPncdenr.gov>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Hello Trevor,
DEQ staff reviewed the report last week, and I believe David Hill is going to be reaching out to you
with follow-up comments (if he has not already). Please let me know if you would still like to
schedule a meeting to discuss.
Thank you,
Brianna Young, MS
Environmental Specialist II
Compliance and Expedited Permitting Unit
NC DEQ/Division of Water Resources
Office: 919-707-3619
Brianna.Young(@ncdenr.gov (e-mail preferred during State of Emergency)

Mailing address: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental
Quality has adjusted operations to protect the health and safety of the staff and public. Many employees
are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office
locations are limiting public access to appointments only. Please check with the appropriate staff before
visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.
From: Clements,Trevor<Trevor.ClementsPtetratech.com>
Sent: Friday, February 05, 2021 3:03 PM
To: Young, Brianna A<Brianna.YoungPncdenr.gov>
Cc: Hill, David A<david.hillPncdenr.gov>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
CAUTION: External email. Do not click links or open attachments unless you verify.Send all suspicious email as an
attachment to Report Soam.
Brianna,
That's great. Thank you for the confirmation. We look forward to getting a meeting date on
everyone's calendar knowing the challenge that coordinating so many schedules poses.
Much appreciated and have a great weekend,
Trevor
From:Young, Brianna A<Brianna,YoungPncdenr.gov>
Sent: Friday, February 5, 2021 2:58 PM
To: Clements,Trevor<Trevor.ClementsPtetratech.com>
Cc: Hill, David A<david.hillPncdenr.gov>
Subject: RE: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Hello Trevor,
Yes, I did receive your email. DWR staff will be meeting in the coming week to take an initial look at
the report. I can check with DWR staff on their schedules for the remainder of March to determine
potential meeting dates as well.
Thank you,
Brianna Young, MS
Environmental Specialist II
Compliance and Expedited Permitting Unit

NC DEQ/Division of Water Resources
Office: 919-707-3619
[e-mail] (e-mail preferred during State of Emergency)
Mailing address: 1617 Mail Service Center, Raleigh, NC 27699-1617
Physical address: 512 North Salisbury Street, Raleigh, NC 27604
Email correspondence to and from this address is subject to the North Carolina
Public Records Law and may be disclosed to third parties.
Based on the current guidance to minimize the spread of COVID-19, the Department of Environmental
Quality has adjusted operations to protect the health and safety of the staff and public. Many employees
are working remotely or are on staggered shifts. To accommodate these staffing changes, all DEQ office
locations are limiting public access to appointments only. Please check with the appropriate staff before
visiting our offices, as we may be able to handle your requests by phone or email. We appreciate your
patience as we continue to serve the public during this challenging time.
From: Clements,Trevor<Trevor.ClementsPtetratech.com>
Sent: Friday, February 05, 2021 2:18 PM
To: Young, Brianna A<Brianna.YoungPncdenr.gov>
Subject: [External] RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
CAUTION: External email. Do not click links or open attachments unless you verify.Send all suspicious email as an
attachment to Report Spam.
Hi Brianna,
Just checking to make sure that you received our request. Please confirm.
Thank you,
Trevor
From: Clements,Trevor
Sent:Thursday, February 4, 20214:38 PM
To:Young, Brianna A<Brianna.Youngc ncdenr.gov>
Cc: Montebello, Michael J <Michael.MontebelloPncdenr.gov>; Hill, David A
<david.hillPncdenr.gov>; Morella King<morella.sanchez-kingPncdenr.gov>; Tom Tharrington
<tom.tharrington(ancdenr.gov>;JP McCann <jmccannPvillagebhi.org>;Tony Boahn
(TBOAHNPmckimcreed.corn) <tboahnPmckimcreed.com>; Schmidt, Michelle
<Michelle.SchmidtPtetratech,com>
Subject: Bald Head Island WTP Discharge Mixing Zone Analysis Report Submittal
Good Afternoon Brianna,
On behalf of the Village of Bald Head Island and the consulting team, I am pleased to submit our
Mixing Zone Analysis report for your review and consideration in modifying the instream waste
concentrations for toxicant limits and whole effluent toxicity requirements in the WTP reverse

osmosis concentrate discharge (NPDES No. NC0085553).The effort followed the Modeling Plan
discussed with and approved by DEQ during our virtual meeting on November 19, 2020. During that
meeting,the Tetra Tech modeling team agreed to make a couple of revisions to our approach which
were made and are documented in the attached report as requested by David Hill. The contents of
the Modeling Plan were incorporated directly into the report to document the approach applied.
As a side note, the Village recognizes that DEQ will want to see background monitoring information
to be able to complete the Reasonable Potential Analysis (RPA) to support effluent limits and
monitoring requirement decisions for specific parameters.The Village is in the process of contracting
with a vendor to conduct the monitoring and laboratory analysis.The contractor and consulting
team will submit the proposed monitoring plan for your review prior to conducting the work.
In the interim, we would like to receive any comments or questions on the Mixing Zone Analysis
report as soon as possible so that DEQ will have the necessary mixing assumptions ready to apply for
the Village's revised permit limitations when the background concentrations for the relevant
toxicants are also available.
Please let us know if you have any questions or would like to discuss anything further. We would
appreciate your acknowledgement of receipt of this report, and also getting something on your
calendar in mid March to discuss any agency comments or questions regarding the Mixing Zone
Analysis report. Please provide some potential dates and times and we will look for a mutually
available time.
Thank you,
Trevor
Trevor Clements I Principal/Program Manager
Direct: 919.485.2058 I Main: 919.485.8278 I Fax: [phone]
trevor,[e-mail]
Tetra Tech Engineering P.C. I Complex World,Clear Solutions
P.O. Box 14409 I 1 Park Drive, Suite 200 I Research Triangle Park, NC 27709 I www.tetratech.com
PLEASE NOTE:This message, including any attachments, may include privileged, confidential and/or inside information.
Any distribution or use of this communication by anyone other than the intended recipient is strictly prohibited and may be
unlawful. If you are not the intended recipient, please notify the sender by replying to this message and then delete it from
your system.

Environmental Chemists, Inc.
envirochem 6602 Windmill Way,Wilmington,NC 28405 • 910.392.0223 Lab • 910.392.4424 Fax
710 Bowsertown Road,Manteo,NC 27954 • 252.473.5702 Lab/Fax
sn+ 255-A Wilmington Highway,Jacksonville,NC 28540 • 910.347.5843 Lab/Fax
ANALYTICAL&CONSULTING CHEMISTS [e-mail]
The Village Of Bald Head Island Date of Report: Apr 30, 2021
106 Lighthouse Wynd Customer PO #:
Bald Head Island NC 28461 Customer ID: 08100149
Attention: David Suther Report#: 2021-06680
Project ID: Cape Fear River Background
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-16636 Site: Cape Fear River Channel 4/27/2021 7:25 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 04/28/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 04/28/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 04/28/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-16637 Site: BHI Marina Basin 4/27/2021 7:40 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 04/28/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 04/28/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 04/28/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-16638 Site: Cape Fear River Channel 4/27/2021 9:35 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 04/28/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 04/28/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 04/28/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-16639 Site: BHI Marina Basin 4/27/2021 9:25 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 04/28/2021
Arsenic EPA 200 8(Dissolved) <0.005 mg/L 04/28/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 04/28/2021
Comment: Zinc-Reporting limit elevated due to matrix interference.
Reviewed by: d j0../ 0 QWL
Report#: 2021-06680 Page 1 of 1

• 13.' T/Od S-44FiSii4iE1G 9 BALD HEAD
April,2021
TIDES FOR BALD HEAD
DAY ' SOLUNAR ACTIVITY
1"TIDE 2"a TIDE 3r4 TIDE 44'TIDE COEFFICIENT
1 Thu xJ A 6:57 am v 7:33 pm 5:16 am o 1 ft ♦ 11:18 ama.r ft • 5:21 pm 02 ft ♦ 11:54 pms s ft ♦ 84 high 9
2 Fri 6:56 am v 7:33 pm 6:12 am 0.3 ft • 12:19 prno 6 h • 6:16 pm o a ft • 67 average 4.
3 Sat / A 6:54 am v 7:34 pm 12:57 ams 3 h • 7:11 am 0.4 h • 1:22 pm 44 ft • 7:17 pm o s ft • 51 average 4#
4 Sun A 6:53amv 7:35 pm 1:59am 5.1 ft • 8:12 am 0.5 ft • 2:24 pm 44 ft A 8:22 pm 06ft ♦ 41 low 4
5 Mon O' 6:52 am• 7:36 pm 3:00 am 5.0 ft • 9:12 am 0 5 ft • 3:25 pm a 4 ft ♦ 9:25 pm o 6 ft • 42 low
6 Tue 1111 a. 6:50 am• 7:36 pm 4:00 am 4.9 ft ♦ 10:09 arro.4 ft • 4:24 pm 4 5 ft ♦ 10:25 pmo s ft • 50 average •
7 Wed , A. 6:49 am♦ 7:37 pm 4:58 am 4.9 ft • 11:02 arr0 3 h • 5:21 pm 4 2 ft ♦ 11'21 pmo 4 ft ♦ 61 average 4
8 Thu . A 6:48 am v 7:38 pm 5:50 am 4.9 ft • 11:51 arm.2 h • 6:14 pm 49 ft A 72 high 4 .,
9 Fri ;. 6:46 am v 7:39 pm 12:13 amo 3 ft • 6:39 am 4.9 ft ♦ 12.38 pmo 1 ft • 7:02 pm 51 ft ♦ 80 high 4 4
10 Sat '. A 6:45 am v 7:39 pm 1:02 am 0.2 ft • 7:24 am 4 9 h ♦ 1:21 pm o.t(t • 7:46 pm 5 2 h ♦ 85 high 4 4 4
17 Sun A 6:44 am v 7:40 pm 1:48 am 0 2 h • 8:06 am 4 9 ft • 2:01 pm 0.2 ft • 8:27 pm 5 2 ft • 88 high 4 4
12 Mon A 6:42 am v 7:41 pm 2:32 am o.2 ft • 8:46 am 48 h • 2:38 pm 0.3 ft ♦ 9:05 pm 5 2 ft ♦ 87 high 4 4 4
13 Tue • A 6:41 am• 7:42 pm 3:13 am 0.3 h • 9:25 am 4 6 ft ♦ 3:12 pm 0.4 ft • 9:41 pm 5 t ft • 84 high 4 4 4
14 Wed i . 6:40amv 7:42 pm 3:52 am 0.4ft ♦ 10:03am44ft ♦ 3:42pm o.5h • 10.11 pms aft A 78 high 4 4
15 Thu I, A 6:39 am v 7:43 pm 4:30 am a s ft • 10:40 arm 3 ft ♦ 4:09 pm 0.6 ft • 10:32 pma 9 ft ♦ 70 high 9
16 Fri • 6:37 am v 7:44 pm 5:07 am 0 7 ft • 11:16 ama 1 ft ♦ 4:36 pm 0.6 ft • 10:51 pm4 e h • 61 average
17 Sat !) A 6:36 am v 7:45 pm 5:45 am 08 ft • 11:51 ama a ft • 5:11 pm 0.7 ft • 11:26 pma 8 ft ♦ 51 average
18 Sun I) A 6:35 am v 7:46 pm 6:28 am o.9 ft • 12:33 pma o ft • 5:55 pm 32 ft • 41 low 4
19 Mon A 6:34 am v 7:46 pm 12:15 arrt4.2 h ♦ 7:19 am o 9 h • 1:25 pm 4 o ft ♦ 6:52 pm o e ft ♦ 34 low 4 9
20 Tue A 6:33 am v 7:47 pm 1:14 am 4.7 ft • 8:19 am 0.9 ft • 2:25 pm 4 1 ft A 8:03 pm o e ft • 34 low 4104
21 Wed • A 6:31 am v 7:48 pm 2:21 am 4.6 ft ♦ 9:19 am o e ft • 3:26 pm 43 ft • 9:20 pm o 2 ft • 43 low ♦ 9
22 Thu l A 6:30 am v 7:49 pm 3:34 am 4 7 ft ♦ 10:16 arro 6 h ♦ 4:27 pm ash ♦ 10:30 pmo 6 h ♦ 57 average
23 Fri A 6:29 am v 7:49 pm 4:41 am 4.e ft ♦ 11:10 arm.4 h • 5:25 pm a 9 ft ♦ 11:33 pmo 3 ft • 73 high 4
24 Sat • A 6:28 am• 7:50 pm 5:42 am 4.9 h • 12:02 prra 2 h • 6:20 pm 5 2 ft A 89 high 4
25 Sun • A 6:27 am v 7:51 pm 12:32 arm.t ft • 6:36 am 5.o ft • 12.53 pmo t ft • 7:11 pm 5 5 ft • 102 very high 4
26 Mon A 6:26 am v 7:52 pm 1:29 am o.o h • 7:28 am Soft ♦ 1:42 pm-a t ft ♦ 8:01 pm s a h ♦ 110 very high 4 4
27 Tue A 6:25 am v 7:53 pm 2:23 am-01 h • 8:19 am 4.9 ft A 2:32 pm-0.1 h • 8:52 pm 5.9 ft • 111 very high 4;4
28 Wed 6:24 am v 7:53 pm 3:16 am-0.2 h • 9:11 am a e h • 3:21 pm-at ft • 9:45 pm 5 e ft • 106 very high 4•
29 Thu A 6:23 am v 7:54 pm 4:09 am-a t h • 10:06 an-s r h ♦ 4:11 pm o.o ft • 10:41 pm5.7 ft ♦ 94 very high 4
30 Fri • A 6:21 am v 7:55 pm 5:02 am 00 ft • 11:06 arra e ft ♦ 5:03 pm o.1 ft V 11:42 pms 4 ft ♦ 79 high
i2021 tides4fishing corn
Vl

Environmental Chemist, Inc., Wilmington, NC Lab #94 6602 Windmill Way
Wilmington, NC 28405
910.392.0223
Sample Receipt Checklist
Client: r• N .T . Date: q c�i / Report Number: 02/ --O (P `a 0 v
Receipt of sample: ECHEM Pickup] Client Delivery 0 UPS 0 FedEx 0 Other 0
❑ YES 0 NO X N/A 1. Were custody seals present on the cooler?
❑ YES ❑ NO ix N/A 2. If custody seals were present, were they intact/unbroken?
Original temperature upon receipt • °C Corrected temperature upon receipt °C
How temperature taken: 0 Temperature Blank A Against Bottles
IR Gun ID: Thomas Traceable S/N 192511657 IR Gun Correction Factor°C: 0.0
❑ YES 0 NO 3. If temperature of cooler exceeded 6°C, was Project Mgr./QA notified?
YES 0 NO 4. Were proper custody procedures (relinquished/received) followed?
YES 0 NO 5. Were sample ID's listed on the COC?
YES ❑ NO 6. Were samples ID's listed on sample containers?
YES ❑ NO 7. Were collection date and time listed on the COC?
YES ❑ NO 8. Were tests to be performed listed on the COC?
YES ❑ NO 9. Did samples arrive in proper containers for each test?
YES 0 NO 10. Did samples arrive in good condition for each test?
YES ❑ NO 11. Was adequate sample volume available?'
YES 0 NO 12. Were samples received within proper holding time for requested tests?
YES 0 NO 13. Were acid preserved samples received at a pH of<2? *
YES 0 NO 14. Were cyanide samples received at a pH >12?
❑ YES ❑ NO 15. Were sulfide samples received at a pH >9?
❑ YES 0 NO 16. Were NH3/TKN/Phenol received at a chlorine residual of<0.5 m/L? **
❑ YES ❑ NO 17. Were Sulfide/Cyanide received at a chlorine residual of<0.5 m/L?
0 YES 0 NO 18. Were orthophosphate samples filtered in the field within 15 minutes?
* TOC/Volatiles are pH checked at time of analysis and recorded on the benchsheet.
** Bacteria samples are checked for Chlorine at time of analysis and recorded on the benchsheet.
Sample Preservation: (Must be completed for any sample(s) incorrectly preserved or with headspace)
Sample(s) were received incorrectly preserved and were adjusted accordingly
by adding (circle one): H2504 HNO3 HCI NaOH
Time of preservation: If more than one preservative is needed, notate in comments below
Note:Notify customer service immediately for incorrectly preserved samples.Obtain a new sample or
notify the state lab if directed to analyzed by the customer.Who was notified,date and time:
Volatiles Sample(s) were received with headspace
COMMENTS:
DOC. QA.002 Rev 1

envirochem ENVIRONMENTAL CHEMISTS INC
6602 Windmill Way Wilmington, NC 28405
NCDENR: DWQ CERTIFICATION#94 NCDHHS: DLS CERTIFICATION#37729 iOnfo@e :9ronment223 FAX
Analytical$Consulting Chemists 910-392-4424
COLLECTION AND CHAIN OF CUSTODY
Client: 1,1+ict 0 o AHr
PROJECT NAME:C,, -0r ( v,2r
ADDRESS: �tm'f; REPORT NO: ��a I- (per
CONTACT NAME:
REPORT TO: PO NO:
PHONE/FAX:
lows
COPY TO:
Sampled B : �— Vc��- email:
- - _ _ SAMPLE TYPE: I = Influent, E = Effluent, W=Well, ST= Stream, SO=Soil, SL=Sludge, Other:
Collection _
Sample Identification � o c •` _, o o
PRESERVATION
no '� .o w p
4 E ,. C O O Ot m m W O M W �'
Date Time u a �' E x g o y o 0 o W w ANALYSIS REQUESTED
a Temp �, a z z = _ = z ~ I- o
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NOTICE-DECHLORINATION: Samples for Ammonia,TKN,Cyanide,Phenol and Bacteria must he dechlorinated(0.5 ppm or less)In the field at the time of collection.
Transfer Relinquished B See
yreverse for instructions
ns
1. Time
Received By: Date/Time
Temperature whe Received °C:_ 3,
Delivered B Accepted: Rejected:
y: Q d Resample Requested:
Comments: Received By;
�Z ii� •�S 194.n Date: 7 a ) Time: l4 i 5
TURNAROUND:

Environmental Chemists, Inc.
envirochem 6602 Windmill Way,Wilmington,NC 28405 • 910.392.0223 Lab • 910.392.4424 Fax
710 Bowsertown Road,Manteo,NC 27954 • 252.473.5702 Lab/Fax
S„ 255-A Wilmington Highway,Jacksonville,NC 28540 • 910.347.5843 Lab/Fax
ANALYTICAL&CONSULTING CHEMISTS infba environmentalchemists.com
The Village Of Bald Head Island Date of Report: May 17, 2021
106 Lighthouse Wynd Customer PO #:
Bald Head Island NC 28461 Customer ID: 08100149
Attention: David Suther Report#: 2021-07451
Project ID: Cape Fear River Background
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-18410 Site: Cape Fear River Channel 5/7/2021 10:14 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 05/12/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 05/10/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 05/10/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by 1
21-18411 Site: BHI Marina Basin 5/7/2021 10:22 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 05/12/2021 I
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 05/10/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 05/10/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-18412 Site: Cape Fear River Channel 5/7/2021 12:12 PM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 05/12/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 05/10/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 05/10/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-18413 Site: BHI Marina Basin 5/7/2021 12:30 PM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 05/12/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 05/10/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 05/10/2021
Comment: w n.A
Reviewed by: AQNli-i
Report#.: 2021-07451 Page 1 of 1

i
Environmental Chemist, Inc., Wilmington, NC Lab #94 6602 Windmill Way
Wilmington, NC 28405
910.392.0223
Sample Receipt Checklist
Client:\,I l vSt-G e {-{-J---L_ Date: ic)Ri Report Number: Q) —v 7(/)---7
Receipt of sample: ECHEM Pickup Client Delivery❑ UPS 0 FedEx 0 Other Cl
❑ YES 0 NO X N/A 1. ere custody seals present on the cooler?
❑ YES 0 NO R N/A 2. If custody seals were present, were they intact/unbroken?
Original temperature upon receipt ,), I °C Corrected temperature upon receipt °C
How temperature taken: 0 Temperature Blank f, '' Against Bottles
IR Gun ID: Thomas Traceable S/N 192511657 IR Gun Correction Factor°C: 0.0
❑ YES 0 NO 3. If temperature of cooler exceeded 6°C, was Project Mgr./QA notified?
YES 0 NO 4. Were proper custody procedures (relinquished/received) followed?
YES 0 NO 5. Were sample ID's listed on the COC?
YES 0 NO 6. Were samples ID's listed on sample containers?
YES 0 NO 7. Were collection date and time listed on the COC?
YES 0 NO 8. Were tests to be performed listed on the COC?
YES 0 NO 9. Did samples arrive in proper containers for each test?
YES 0 NO 10. Did samples arrive in good condition for each test?
YES 0 NO 11. Was adequate sample volume available?'
YES 0 NO 12. Were samples received within proper holding time for requested tests?
YES 0 NO 13. Were acid preserved samples received at a pH of<2? *
❑ YES 0 NO 14. Were cyanide samples received at a pH >12?
❑ YES ❑ NO 15. Were sulfide samples received at a pH >9?
❑ YES 0 NO 16. Were NH3/TKN/Phenol received at a chlorine residual of<0.5 m/L? **
❑ YES 0 NO 17. Were Sulfide/Cyanide received at a chlorine residual of<0.5 m/L?
❑ YES 0 NO 18. Were orthophosphate samples filtered in the field within 15 minutes?
* TOC/Volatiles are pH checked at time of analysis and recorded on the benchsheet.
** Bacteria samples are checked for Chlorine at time of analysis and recorded on the benchsheet.
Sample Preservation: (Must be completed for any sample(s) incorrectly preserved or with headspace)
Sample(s) were received incorrectly preserved and were adjusted accordingly
by adding (circle one): H2SO4 HNO3 HCI NaOH
Time of preservation: If more than one preservative is needed, notate in comments below
Note:Notify customer service immediately for incorrectly preserved samples.Obtain a new sample or
notify the state lab if directed to analyzed by the customer.Who was notified,date and time:
Volatiles Sample(s) were received with headspace
COMMENTS:
DOC. QA.002 Rev 1

envirochem ENVIRONMENTAL CHEMISTS INC
6602 Windmill Way Wilmington, NC 28405
NCDENR: DWQ CERTIFICATION#94 NCDHHS: DLS CERTIFICATION#37729 iinfo@en 910-392-0223 nta chemistsFAX com
Analytical&Consulting Chemists -4424
COLLECTION AND CHAIN OF CUSTODY
Client: L
t
I Q C. / i )�t"ecl S PROJECT NAME: ,
ADDRESS: REPORT NO: 9O4 1 — 7 5
CONTACT NAME:
REPORT TO: PO NO:
COPY TO: PHONE/FAX:
Sampled B „i`y email: _
_ SAMPLE TYPE: I =Influent, E = Effluent, W=Well, ST=Stream, SO =Soil, SL=Sludge, Other:
Collection
Sample Identification PRESERVATION
>` - a v a
o ` C C9 C J p O W
n act ° `o o rn m m w v a
E a o a c E `o Z -, O ^ = 0 w
Date Time O u o v �' x o �' w w ANALYSIS REQUESTED
I Temp a z Z = _ = z
Jer C�i11e ' lip
LL o
G 2 )F5-'L \',- /1 C
5 J zn d�it,�
P 4
G
iiiiimm 1.1..... UM. Zi 2. )g,-i) 1
NM
MINI%( \‘‘air 1E G ■
2 ISLIId- In
111111111111 P
/' G
IIIIIIIIM G c 2 189 1 111
C P
C G \ i
NOTICE-DECHLORINATION: Samples for Ammonia,TKN,Cyanide,Phenol and Bacteria must be dechlorinated(0.5 ppm or less)in the field at the time of collection. See reverse for In
Transfer Relinquished By;
e
Date/Tim Instructions
�' Received By: Date/Time
2.
Temperature wheneceived °C:
Delivered By: Accepted:=_ Rejected:
l a ���'" Resample Requested:
Comments: Received By.
--_ Date:> Time: �/_
TURNAR UND:

I
Environmental Chemists, Inc.
envirochem 6602 Windmill Way,Wilmington,NC 28405 • 910.392.0223 Lab • 910.392.4424 Fax
710 Bowsertown Road,Manteo,NC 27954 • 252.473.5702 Lab/Fax
srn 255-A Wilmington Highway,Jacksonville,NC 28540 • 910.347.5843 Lab/Fax
ANALYTICAL&CONSULTING CHEMISTS infora environmentalchemists.com
The Village Of Bald Head Island Date of Report: Jun 08, 2021
106 Lighthouse Wynd Customer PO#:
Bald Head Island NC 28461 Customer ID: 08100149
Attention: David Suther Report#: 2021-08263
Project ID: Cape Fear River Background
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-20480 Site: Cape Fear River Channel 5/21/2021 8:45 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.030 mg/L 06/03/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 05/25/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 05/25/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-20481 Site: BHI Marina Basin 5/21/2021 8:55 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.030 mg/L 06/03/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 05/25/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 05/25/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-20482 Site: Cape Fear River Channel 5/21/2021 10:50 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200 7(Dissolved) <0.030 mg/L 06/03/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 05/25/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 05/25/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-20483 Site: BHI Marina Basin 5/21/2021 10:58 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.030 mg/L 06/03/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 05/25/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 05/25/2021
Comment: Zinc-reporting limit elevated due to matrix interference.
Reviewed by: Kluticac2, uquui
Report#:: 2021-08263 Page 1 of 1

i
Environmental Chemist, Inc., Wilmington, NC Lab #94 6602 Windmill Way
Wilmington, NC 28405
910.392.0223
Sample Receipt Checklist
Client: g . N- .Z Date: 5 2 l AIRY Report Number: Q 1 —013 21p 3
Receipt of sample: ECHEM Pickup Client Delivery ❑ [UPS 0 FedEx 0 Other 0
❑ YES ❑ NO rr. N/A 1. Were custody seals present on the cooler?
0 YES �❑ NO N/A 2. If custodyseals were resent present, they intact/unbroken?
Original temperature upon receipt 3 3 °C Corrected temperature upon receipt °C
How temperature taken: 0 Temperature Blank f, " Against Bottles
IR Gun ID: Thomas Traceable S/N 192511657 IR Gun Correction Factor°C: 0.0
0 YES 0 NO 3. If temperature of cooler exceeded 6°C, was Project Mgr./QA notified?
..d YES 0 NO 4. Were proper custody procedures (relinquished/received) followed?
II YES 0 NO 5. Were sample ID's listed on the COC?
III YES 0 NO 6. Were samples ID's listed on sample containers?
II YES 0 NO 7. Were collection date and time listed on the COC?
'II YES 0 NO 8. Were tests to be performed listed on the COC?
II YES 0 NO 9. Did samples arrive in proper containers for each test?
II YES 0 NO 10. Did samples arrive in good condition for each test?
al YES 0 NO 11. Was adequate sample volume available?'
►'. YES 0 NO 12. Were samples received within proper holding time for requested tests?
U YES 0 NO 13. Were acid preserved samples received at a pH of<2? *
r YES 0 NO 14. Were cyanide samples received at a pH >12?
0 YES 0 NO 15. Were sulfide samples received at a pH >9?
D YES 0 NO 16. Were NH3/TKN/Phenol received at a chlorine residual of<0.5 m/L? **
0 YES 0 NO 17. Were Sulfide/Cyanide received at a chlorine residual of<0.5 m/L?
0 YES 0 NO 18. Were orthophosphate samples filtered in the field within 15 minutes?
* TOC/Volatiles are pH checked at time of analysis and recorded on the benchsheet.
** Bacteria samples are checked for Chlorine at time of analysis and recorded on the benchsheet.
Sample Preservation: (Must be completed for any sample(s) incorrectly preserved or with headspace)
Sample(s) were received incorrectly preserved and were adjusted accordingly
by adding (circle one): H2504 HNO3 HCI NaOH
Time of preservation: If more than one preservative is needed, notate in comments below
Note:Notify customer service immediately for incorrectly preserved samples.Obtain a new sample or
notify the state lab if directed to analyzed by the customer.Who was notified,date and time:
Volatiles Sample(s) were received with headspace
COMMENTS:
DOC. QA.002 Rev 1

envirochem ENVIRONMENTAL CHEMISTS
INC6602 Windmill Way Wilmington,NC 28405
Analytical&Consulting Chemists NCDENR: DWQ CERTIFICATION#94 NCDHHS: DLS CERTIFICATION#37729 OFFICE:
91onment223 Fm AX 910-39
OFFICE: 9ronme-talc FAX to co 2 4424
`---- COLLECTION AND CHAIN OF CUSTODY
Client: ,vl;
t PROJECT NAME:
ADDRESS: REPORT NO: ' .2 -5.2a 3
CONTACT NAME:
REPORT TO: PO NO:
COPY TO: PHONE/FAX:
Sam.led B : !,2r ‘''' r ••
email:
` SAMPLE TYPE: I =Influent, E = Effluent, W=Well, ST=Stream, SO =Soil, SL=Sludge, Other:
Collection
Sample Identification °' PRESERVATION
c0 o gum,
a aC7 =° a o al m m W O
Date E o = = E o Z o 0 5. o w W ANALYSIS REQUESTED
Time Temp u) o a z z x z z = w o
�� r. /r ..\ I::`i C P x s z o
IIIG G C 2 �o�.F50 x
III C P Z►� D S�Ive�
G G
P�� /lIII`, 085 C P
/C p
G G
l• .50 C P
a 1.1 Year e:V 1i ; Z
MI G C P
MI o C G
G G Z 94% X xI
C p
G G
NOTICE-DECHLORINATION: Samples for Ammonia,TKN,Cyanide,Phenol and Bacteria must be deehlorinated(0.5 ppm or less)in the field at the time of collection.
Transfer Relinquished By:
t. Date/Time See reverse for Instructions
Trans
Received By:
Date/Time
2.
temperature when Received °C:_`_aa
Accepted: Rejected:
Received By: Resample Requested:
Delivered By:
:omments:
Date:_ LIA L_Time: I
TURNAROUND:

i
Environmental Chemists, Inc.
envirochem 6602 Windmill Way,Wilmington,NC 28405 . 910.392.0223 Lab ' 910.392.4424 Fax
710 Bowsertown Road,Manteo,NC 27954 • 252.473.5702 Lab/Fax
sM 255-A Wilmington Highway,Jacksonville,NC 28540 • 910.347.5843 Lab/Fax
ANALYTICAL&CONSULTING CHEMISTS [e-mail]
The Village Of Bald Head Island Revised Report: May 07, 2021
106 Lighthouse Wynd Original Report Date: Apr 23, 2021
Bald Head Island NC 28461 Report#: 2021-06010
Attention: David Suther Customer ID: 08100149
Project ID: Cape Fear River Background
Sampling
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-14913A Site: Marina 1 4/14/2021 8:45 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200 7(Dissolved) <0.03 mg/L 04/20/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 04/19/2021
Copper EPA 200 8(Dissolved) <0.005 mg/L 04/19/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-14914A Site: River 1 4/14/2021 8:30 AM Water Zach Owen
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 04/20/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 04/19/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 04/19/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-14915A Site: Marina 2 4/14/2021 10:53 AM Water Rob Clark
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 04/20/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 04/19/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 04/19/2021
Lab ID Sample ID: Collect Date/Time Matrix Sampled by
21-14916A Site: River 2 4/14/2021 10:46 AM Water Rob Clark
Test Method Results Date Analyzed
Zinc EPA 200.7(Dissolved) <0.03 mg/L 04/20/2021
Arsenic EPA 200.8(Dissolved) <0.005 mg/L 04/19/2021
Copper EPA 200.8(Dissolved) <0.005 mg/L 04/19/2021
Comment: Zinc- Reporting limit elevated due to matrix interf nce. Revised to correct method and units.
Reviewed by:
Report# 2021-06010 Page 1 of 1

Environmental Chemist, Inc., Wilmington, NC Lab #94 6602 Windmill Way
Wilmington, NC 28405
910.392.0223
Sample/Receipt Checklist
Client:vku_Pt � o i• Date: v ( 4 c:=Ri Report Number: Qi —060/0
Receipt of sample: ECHEM Pickup Client Delivery ElUPS 0 FedEx 0 Other 0
0 YES 0 NO N/A Were custody seals present on the cooler?
0 YES 0 NO R N/A 2. If custody seals were present, were they intact/unbroken?
Original temperature upon receipt___,,,?.3 °C Corrected temperature upon receipt °C
How temperature taken: 0 Temperature Blank Or Against Bottles
IR Gun ID: Thomas Traceable S/N 192511657 IR Gun Correction Factor °C: 0.0
❑ YES 0 NO 3. If temperature of cooler exceeded 6°C, was Project Mgr./QA notified?
YES ❑ NO 4. Were proper custody procedures (relinquished/received) followed?
YES 0 NO 5. Were sample ID's listed on the COC?
YES 0 NO 6. Were samples ID's listed on sample containers?
YES 0 NO 7. Were collection date and time listed on the COC?
YES 0 NO 8. Were tests to be performed listed on the COC?
YES 0 NO 9. Did samples arrive in proper containers for each test?
YES 0 NO 10. Did samples arrive in good condition for each test?
YES 0 NO 11. Was adequate sample volume available?'
YES 0 NO 12. Were samples received within proper holding time for requested tests?
YES 0 NO 13. Were acid preserved samples received at a pH of<2? *
❑ YES 0 NO 14. Were cyanide samples received at a pH >12?
❑ YES 0 NO 15. Were sulfide samples received at a pH >9?
❑ YES 0 NO 16. Were NH3/TKN/Phenol received at a chlorine residual of<0.5 m/L? **
❑ YES 0 NO 17. Were Sulfide/Cyanide received at a chlorine residual of<0.5 m/L?
0 YES 0 NO 18. Were orthophosphate samples filtered in the field within 15 minutes?
* TOC/Volatiles are pH checked at time of analysis and recorded on the benchsheet.
** Bacteria samples are checked for Chlorine at time of analysis and recorded on the benchsheet.
Sample Preservation: (Must be completed for any sample(s) incorrectly preserved or with headspace)
Sample(s) were received incorrectly preserved and were adjusted accordingly
byadding g (circle one): H 4HNO3O HNO HCI NaOH
2
Time of preservation: If more than one preservative is needed, notate in comments below
Note:Notify customer service immediately for incorrectly preserved samples.Obtain a new sample or
notify the state lab if directed to analyzed by the customer.Who was notified,date and time:
Volatiles Sample(s) were received with headspace
COMMENTS:
DOC. QA.002 Rev 1

envirochem ENVIRONMENTAL CHEMISTS
Analytical 8 Consulting [e-mail]
1 6602 Windmill Way Wilmington, NC 28405
I N C
NCDENR: DWQ CERTIFICATION#94 NCDHHS: DLS CERTIFICATION #37729 OFFICE: 910-392-0223 FAX [phone]
Client: aald head 1SI �
COLLECTION AND CHAIN OF CUSTODY
PROJECT NAME: euc 'qt Ucktour4 REPORT NO:
CONTACT NAME: ZI - O60I Co
REPORT TO: PO NO:
COPY TO: PHONE/FAX:
Sampled B :
email:
SAMPLE TYPE: I = Influent, E -
Collection = Effluent, W= Well, ST= Stream, SO =Sample Identification a a PRESERVATION Soil, SL = Sludge, Other:
�' '^ A C U• c o Q a'
O- a CD c O O QI m W
Q1 p
Date A o a c E f ? "p = w
Time Temp u, v U 2 Z o = N 2 Q = w = ANALYSIS REQUESTED
/Ulac >\ n. (� it
Li'14-1 :ys z = Z o
G G 11111
14113
R;Ycr (1) ; :3o C P ASS Z^, (-1,,..f.. 1
G G • I111U
Uf r\ok (2) lo: C P x
G G lu 91S
R` (�-� 6:y6 C P
G G il� glb
C P
G G
C P
G G
P
G G
C P
G G
NOTICE-DECHLORINATION: Samples for Ammonia,TKN,Cyanide,Phenol and Bacteria must be dechlonnated p.5
Transfer
Relinquished By: I ppm or less)in the field at the time of collection. See reverse for instructions
Date/Time
1.
Received By:
Date/Time
2.
Temperature when Received °C: 1.jet _
Delivered By: Accepted: _ Rejected:
Comments: __ Received By: ,Resample Requested:
�- __ Date: N R ZI Time: 12:32
TURNAROUND:

Summary of Background Metals Monitoring Results Reported by Environmental Chemists,Inc
Reporting
Tide High/Low Sampling Level Results •R�
Parameter Sampling Date Time(NOM) Time Location Method (mg/L) (mg/L)
Arsenic 4/14/2021 10:03 AM(H) 8:30 AM River EPA 200.8(dissolved) <0.005 <0.005
Arsenic 4/14/2021 10:03 AM(H) 8:45 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Arsenic 4/14/2021 10:03 AM(H) 10:46 AM River EPA 200.8(dissolved) <0.005 <0.005
Arsenic 4/14/2021 10:03 AM(H) 10:53 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Arsenic 4/27/2021 8:19 AM(H) 7:25 AM River EPA 200.8(dissolved) <0.005 <0.005
Arsenic 4/27/2021 8:19 AM(H) 7:40 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Arsenic 4/27/2021 8:19 AM(H) 9:35 AM River EPA 200.8(dissolved) <0.005 <0.005
Arsenic 4/27/2021 8:19 AM(H) 9:25 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Arsenic 5/7/2021 11:18 AM(L) 10:14 AM River EPA 200.8(dissolved) <0.005 <0.005
Arsenic 5/7/2021 11:18 AM(L) 10:22 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Arsenic 5/7/2021 11:18 AM(L) 12:12 PM River EPA 200.8(dissolved) <0.005 <0.005
Arsenic 5/7/2021 11:18 AM(L) 12:30 PM Marina EPA 200.8(dissolved) <0.005 <0.005
Arsenic 5/21/2021 9:38 AM(L) 8:45 AM River EPA 200.8(dissolved) <0.005 <0.005
Arsenic 5/21/2021 9:38 AM(L) 8:55 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Arsenic 5/21/2021 9:38 AM(L) 10:50 AM River EPA 200.8(dissolved) <0.005 <0.005
Arsenic 5/21/2021 9:38 AM(L) 10:58 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Copper 4/14/2021 10:03 AM(H) 8:30 AM River EPA 200.8(dissolved) <0.005 <0.005
Copper 4/14/2021 10:03 AM(H) 8:45 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Copper 4/14/2021 10:03 AM(H) 10:46 AM River EPA 200.8(dissolved) <0.005 <0.005
Copper 4/14/2021 10:03 AM(H) 10:53 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Copper 4/27/2021 8:19 AM(H) 7:25 AM River EPA 200.8(dissolved) <0.005 <0.005
Copper 4/27/2021 8:19 AM(H) 7:40 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Copper 4/27/2021 8:19 AM(H) 9:35 AM River EPA 200.8(dissolved) <0.005 <0.005
Copper 4/27/2021 8:19 AM(H) 9:25 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Copper 5/7/2021 11:18 AM(L) 10:14 AM River EPA 200.8(dissolved) <0.005 <0.005
Copper 5/7/2021 11:18 AM(L) 10:22 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Copper 5/7/2021 11:18 AM(L) 12:12 PM River EPA 200.8(dissolved) <0.005 <0.005
Copper 5/7/2021 11:18 AM(L) 12:30 PM Marina EPA 200.8(dissolved) <0.005 <0.005
Copper 5/21/2021 9:38 AM(L) 8:45 AM River EPA 200.8(dissolved) <0.005 <0.005
Copper 5/21/2021 9:38 AM(L) 8:55 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Copper 5/21/2021 9:38 AM(L) 10:50 AM River EPA 200.8(dissolved) <0.005 <0.005
Copper 5/21/2021 9:38 AM(L) 10:58 AM Marina EPA 200.8(dissolved) <0.005 <0.005
Zinc 4/14/2021 10:03 AM(H) 8:30 AM River EPA 200.7(dissolved) <0.03 <0.03
Zinc 4/14/2021 10:03 AM(H) 8:45 AM Marina EPA 200.7(dissolved) <0.03 <0.03
Zinc 4/14/2021 10:03 AM(H) 10:46 AM River EPA 200.7(dissolved) <0.03 <0.03
Zinc 4/14/2021 10:03 AM(H) 10:53 AM Marina EPA 200.7(dissolved) <0.03 <0.03
Zinc 4/27/2021 8:19 AM(H) 7:25 AM River EPA 200.7(dissolved) <0.03 <0.03
Zinc 4/27/2021 8:19 AM(H) 7:40 AM Marina EPA 200.7(dissolved) <0.03 <0.03
Zinc 4/27/2021 8:19 AM(H) 9:35 AM River EPA 200.7(dissolved) <0.03 <0.03
Zinc 4/27/2021 8:19 AM(H) 9:25 AM Marina EPA 200.7(dissolved) <0.03 <0.03
Zinc 5/7/2021 11:18 AM(L) 10:14 AM River EPA 200.7(dissolved) <0.03 <0.03
Zinc 5/7/2021 11:18 AM(L) 10:22 AM Marina EPA 200.7(dissolved) <0.03 <0.03
Zinc 5/7/2021 11:18 AM(L) 12:12 PM River EPA 200.7(dissolved) <0.03 <0.03
Zinc 5/7/2021 11:18 AM(L) 12:30 PM Marina EPA 200.7(dissolved) <0.03 <0.03
Zinc 5/21/2021 9:38 AM(L) 8:45 AM River EPA 200.7(dissolved) <0.03 <0.03
Zinc 5/21/2021 9:38 AM(L) 8:55 AM Marina EPA 200.7(dissolved) <0.03 <0.03
Zinc 5/21/2021 9:38 AM(L) 10:50 AM River EPA 200.7(dissolved) <0.03 <0.03
Zinc 5/21/2021 9:38 AM(L) 10:58 AM Marina EPA 200.7(dissolved) <0.03 <0.03
NOAA:https://tidesandcurrents.noaa.gov/noaatidepredictions.html?id=8658901&units=standard&bdate=20210519&elate=20210522&timezone=LST/LDT&clock=l2hou r&datum=MLLW&interval=hilo&action=dailychart

f
V 4"
I.
t
t
River Sampling Site
(33.883167, -78.008933) ;
, /• •
,` r , 4 e
Cape Fear River i,. i '> . "
. 044,,. ,EL _.., , , , : -: yie
'.4 - itfil:2, . ,
NPDES Outfall t ..
...,,,
`1
i ', "'lb . Marina Sampling Site
ip
(33.876293, -78.000442)
Scarce: -I, ['lc ec- " Aliatiblrb rg elder anD ,
SDA. ,• 'G ,A--TJCnc o.1M,,:anti lira NS lime Comm
Metals Sampling Sites lit TETRA TECH
Map produced by M. Schmidt 6-10-2021
NAD 1983 StatePlane North Carolina FIPS 3200 Feet

Bald Head Island WTP EXECUTIVE SUMMARY: Mixing Zone Analysis for WTP Discharge
ATTACHMENT G — EMAIL FROM NCDWR CONCURRING WITH
RECOMMENDATIONS FOR MIXING ZONE DILUTION RATIOS
Email from NCDWR concurring with recommendations
for mixing zone dilution ratios
L �Th]TETRA TECH August 13, 2021

From: }sill, David A
To: Clements,Trevor;Young, Brianna A
Cc: Schmidt,Michell )P McCann;Tony Boahn(TBOAHNCamckimcreed.coml
Subject: Re: [External]RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report
Submittal
Date: Friday,July 30,2021 6:50:20 PM
Hello Trevor,
After reviewing the model results, sensitivity analyses, and stream sampling, the Division
concurs with your assessment with using an average 10:1 dilution for human health and
aquatic life chronic criteria. A dilution of 6.5:1 for acute criteria is also acceptable. These
dilution ratios only apply to the parameters that were sampled for (arsenic, copper, and zinc)
and WET testing.
Sincerely,
David Hill
Environmental Specialist II
Industrial Permitting Unit
**Email preferred during this time*
NC DEQ/Division of Water Resources/Water Quality Permitting Section
NPDES Industrial Permitting Unit
919 707 3612 office
919 707 9000 main office
[e-mail]
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Clements,Trevor<[e-mail]>
Sent:Wednesday,July 21, 2021 10:48 AM
To: Hill, David A<[e-mail]>; Young, Brianna A<[e-mail]>
Cc: Schmidt, Michelle<[e-mail]>;JP McCann <[e-mail]>;
Tony Boahn ([e-mail]) <[e-mail]>
Subject: RE: [External] RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone
Analysis Report Submittal
CAUTION: External email.Do not click links or open attachments unless you verify.Send all suspicious email as an
attachment to Report Spam.
David,
Thank you for the rapid response. We'll look forward to reviewing that with you at that time.
Much appreciated,
A

Trevor
From: Hill, David A<[e-mail]>
Sent: Wednesday,July 21, 2021 10:47 AM
To: Clements,Trevor<[e-mail]>; Young, Brianna A
<[e-mail]>
Cc: Schmidt, Michelle<[e-mail]>;JP McCann <[e-mail]>;
Tony Boahn ([e-mail]) <[e-mail]>
Subject: Re: [External] RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone
Analysis Report Submittal
Hi Trevor,
We'll have a response by the 30th.
Thanks,
David Hill
Environmental Specialist II
Industrial Permitting Unit
**Email preferred during this time*
NC DEQ/ Division of Water Resources/Water Quality Permitting Section
NPDES Industrial Permitting Unit
919 707 3612 office
919 707 9000 main office
[e-mail]
Physical Address: 512 North Salisbury St.,Raleigh, NC, 27604
Mailing Address: 1617 Mail Service Center, Raleigh, NC, 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Clements,Trevor<Trevor.ClementsPtetratech.com>
Sent: Wednesday,July 21, 2021 10:45 AM
To: Hill, David A<david.hillPncdenr.gov>; Young, Brianna A<Brianna.YoungPncdenr.gov>
Cc: Schmidt, Michelle<Michelle.SchmidtPtetratech.com>;JP McCann<jmccannPvillagebhi.org>;
Tony Boahn (TBOAHNPmckimcreed.com) <TBOAHNPmckimcreed.com>
Subject: [External] RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone
Analysis Report Submittal
CAUTION: External email.Do not click links or open attachments unless you verify.Send all suspicious email as an
attachment to Reoort Spam.
Hello David and Brianna,
I'm circling back to you to see if you've had a chance to calculate the revised permit limits for the
Bald Head Island RO concentrate discharge. Would you please update us regarding the status and

r I
your anticipated schedule?
Thank you,
Trevor
From: Clements,Trevor
Sent:Thursday,June 10, 2021 3:36 PM
To: 'Hill, David A'<david.hillPncdenr.gov>; 'Young, Brianna A'<Brianna.YoungPncdenr.gov>
Cc:Schmidt, Michelle<Michelle.SchmidtPtetratech.com>; 'JP McCann'<jmccannPvillagebhi.org>;
Tony Boahn (TBOAHNPmckimcreed.com) <tboahnPmckimcreed.com>
Subject: RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report
Submittal
David and Brianna,
Good news...the monitoring and lab analysis for background concentrations of the identified metals
(As, Cu, Zn) was completed by Environmental Chemists and we received the final of the 4 data sets
this week(collected between April 14 and May 21) at the two monitoring locations (river and
marina, map attached with lat/long coordinates).The lab reports are attached for verification, and
we summarized the data in the attached Excel file with high or low tide time provided for
referencing to the timing of both sets of data collection for each sampling day.
As you will note, all samples were found to be below detection levels, which is also good news.This
indicates that observable build-up of metals concentrations in the marina associated with the
discharge of WTP concentrate from the Village is unlikely which I think everyone is glad to see.
Please use this information along with the previous submittals to calculate your revised NPDES limits
for the facility. We look forward to reviewing the proposed limits and discussing any of our previous
analyses and recommendations further with you as needed.
Thank you,
Trevor
Trevor Clements I Principal/Program Manager
Direct: 919.485.2058 I Main: 919.485.8278 I Cell:919.328.0175
[e-mail]
Tetra Tech Engineering P.C.I Complex World,Clear Solutions
P.O. Box 14409 I 1 Park Drive, Suite 200 I Research Triangle Park, NC 27709 I www.tetratech.com
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From: Clements,Trevor
Sent: Wednesday, March 17, 2021 3:10 PM
To: Hill, David A<david.hillPncdenr.gov>; Young, Brianna A<Brianna.YoungPncdenr.gov>
Cc: Schmidt, Michelle<Michelle.SchmidtPtetratech.com>;JP McCann<jmccannPvillagebhi.org>;
Tony Boahn (TBOAHNPmckimcreed.com) <[e-mail]>
Subject: RE: Follow up to Request RE: Bald Head Island WTP Discharge Mixing Zone Analysis Report
Submittal
David and Brianna,
This email is to follow up on our previous email and conversation on 3/15/21. The attached tables
show the sensitivity to a 25 percent change in either direction for ambient temperature, ambient
salinity, and effluent temperature.The first table indicates the impact on the dilution ratio under
high tidal variation observed in December, and the second shows the results in terms of percent
change from the original output. As we might expect, the output is slightly more sensitive to salinity
than temperature, but in all cases the 25 percent change produced much lower change in dilution
ratio ranging from approximately zero for temperature to about 11 percent for lower salinities.
As we discussed on the phone, we think it is important in making your final decision for the Village of
Bald Head Island permit to consider the time frame appropriate for human health criteria, as well as
acute and chronic aquatic life criteria.The human health and chronic aquatic life criteria reflect long-
term exposure.Therefore, although CORMIX is not well suited to predict long-term average dilution,
at a minimum we can consider the tidally-averaged condition (i.e., the average across the low and
high tidal variation scenarios) as appropriate for these two criteria. Additionally, given the relatively
short distance that 1/3rd the inlet channel represents (8.33 m or 27 ft) along with the conservative
assumption of maximum concentration along the plume centerline instead of the radial average at
the distance from the outfall, we believe it makes sense to give the full 8.33 m for the chronic and
human health criteria. In this case that would result in using a dilution ratio of 10:1 for the tidally-
averaged mixing, and an instream waste concentration (IWC) for chronic testing of 10 percent.
For any future application of acute aquatic life criteria, we recommend using the average dilution
across the low and high tidal variation scenarios for the most limiting month (June) but restricting it
to the near-field initial mixing. Average dilution ratio remains similar within the first 3 m or roughly
10 ft which seems appropriate to capture initial mixing.Thus, for the acute dilution ratio we would
recommend using 6.5:1.
We realize that the final piece of the information needed to complete reasonable potential analysis
and wasteload allocation determinations will be receipt of the background concentrations.The
Village is working with a field and lab analysis contractor to obtain this information and it will be
shared as soon as possible to complete the process.
In the interim, we would appreciate any further feedback for efforts to this point.
Sincerely,
Trevor
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