NC0004308_More Information (Received)_20230112

Badin Business Park LLC
201 Isabella Street
Suite 500
Pittsburgh, PA 15212-5858 USA
Tel: [phone]
January 12, 2023
Amirhossein (Amir) Rezaei Adaryani, PhD
Division of Water Resources
Water Quality Permitting Section - NPDES
1611 Mail Service Center
Raleigh, NC 27699-1617
RE: Response to Request for Additional Information, NPDES Application NC0004308
Badin Business Park, LLC
Dear Dr. Adaryani:
Badin Business Park, LLC submits the attached information in response to your email request for
additional information on the central drainage channel, dated November 4, 2022. The provided
information supplements the April 25, 2022, permit renewal application (Application) and is based on
the analysis of a sample collected from the central drainage channel on December 15, 2022. Included
are updated Form 2F tables, December data summary tables (supplement the Application Tables 1-2
through 1-7), and the respective laboratory reports.
As previously discussed, the Reporting Limits (RL) and Method Detection Limits (MDL) available from the
commercial laboratory are reported. When a concentration was detected between the MDL and RL and
qualified with a J-flag, the concentration is considered an estimate and not summarized on Form 2F.
Should you have questions or require further information, please contact me at [e-mail]
or 412-315-2780.
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. 1 am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations.
Sincerely,
Robyn L. Gross
Director, Asset Management Americas
Badin Business Park LLC
cc: Douglas Dowden, NCDEQ
Jason Mibroda, Alcoa Corporation

EPA Identification Number NPDES Permit Number Facility Name Outfall Number Form Approved 03/05/19
NCD 003 162 542 NC0004308 Badin Business Park, LLC CDC OMB No. 2040-0004
TABLE A. CONVENTIONAL AND NON CONVENTIONALI
You must provide the results of at least one anal sis for every pollutant in this table. Complete one table for each outfall. See instructions for additional details and requirements.
Maximum Daily Discharge
Average Daily Discharge
Source of
(specify units)
(specify units)
Number of Storm
Information
Grab Sample Taken
Flow -Weighted
Grab Sample Taken
Flow -Weighted
Pollutant or Parameter
Events Sampled
(new source/new
During First
Composite
During First
Composite
dischargers only; use
30 Minutes
30 Minutes
codes in instructions )
1.
Oil and grease
< 2.4 mg/L
< 2.4 mg/L
1
NA
2.
Biochemical oxygen demand (BOD5)
8.5 mg/L
NA
8.5 mg/L
NA
1
NA
3.
Chemical oxygen demand (COD)
18 mg/L
NA
17 mg/L
NA
2
NA
4.
Total suspended solids (TSS)
21 mg/L
NA
16 mg/L
NA
3
NA
5.
Total phosphorus
<0.05 mg/L
NA
<0.05 mg/L
NA
1
NA
6.
Total Kjeldahl nitrogen (TKN)
0.13 mg/L
NA
0.13 mg/L
NA
1
NA
7.
Total nitrogen (as N)
0.34 mg/L
NA
0.34 mg/L
NA
1
NA
pH (minimum)
6.4 s.u.
6.4 s.u.
2
NA
An
8.
pH (maximum)
8.5 s.u.
8.5 s.u.
2
NA
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 3510-21F (Revised 3-19) Page 7

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
NCD 003 162 542 NC0004308 Badin Business Park, LLC CDC
Form Approved 03/05/19
OMB No. 2040-0004
TABLE B. CERTAIN CONVENTIONAL AND NON CONVENTIONAL POLLUTANTS (40 CFIR 122.26(c)(1)(i)(E)(4) and 40 CFR 1122.211(g)(7)(vi)(A))'
List each pollutant that is limited in an effluent limitation guideline (ELG) that the facility is subject to or any pollutant listed in the facility's NPDES permit for its process wastewater (if the
facility is operating under an existing NPDES permit). Complete one table for each outfall. See the instructions for additional details and requirements.
Pollutant and CAS Number (if available)
Maximum Daily Discharge
(specify units)
Average Daily Discharge
(specify units)
Number of Storm
Events Sampled
Source of
Information
(new source/new
dischargers only; use
codes in instructions)
Grab Sample Taken
During First
30 Minutes
Flow -Weighted
Composite
Grab Sample Taken
During First
30 Minutes
Flow -Weighted
Composite
Fluoride
1.3 mg/L
NA
1.1 mg/L
NA
2
NA
Cyanide, Total
<6 ug/L
NA
<6 ug/L
NA
2
NA
Aluminum, Total
3,900 ug/L
NA
2,350 ug/L
NA
2
NA
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 3510-21F (Revised 3-19) Page 9

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility Name Outfall Number
NCD 003 162 542 NC0004308 Badin Business Park, LLC CDC
Form Approved 03/05/19
OMB No. 2040-0004
TABLE C. TOXIC POLLUTANTS, CERTAIN HAZARDOUS SUBSTANCES, AND ASBESTOS (40 CIFIR 122.26(c)(1)(i)(E)(4) and 40 CIFIR 122.21(g)(7)(vi)(B) and (vii))'
List each pollutant shown in Exhibits 2F-2, 2F-3, and 2F-4 that you know or have reason to believe is present. Complete one table for each outfall. See the instructions for additional
details and requirements.
Pollutant and CAS Number (if available)
Maximum Daily Discharge
speci units
Average Daily Discharge
speci units
Number of Storm
Events Sampled
Source of
Information
(new source/new
dischargers only; use
codes in instructions)
Grab Sample Taken
During First
30 Minutes
Flow -Weighted
Composite
Grab Sample Taken
During First
30 Minutes
Flow -Weighted
Comosite
p
Copper
5.4 ug/L
NA
5.4 ug/L
NA
1
NA
Dicamba
1.1 ug/L
NA
1.1 ug/L
NA
1
NA
Additional parameters analyzed were less than tV
e MDL and summarizec
on the attached. Chl
romethane, lead and ni
kel were detected at concentrations
less than
the RL, but greater
an or equal o the IVIUL, qualified with a Fflag,
onsi ere an es ima e,
and are not included
n this table.
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 3510-21F (Revised 3-19) Page 11

This page intentionally left blank.

EPA Identification Number NPDES Permit Number Facility name Outfall Number Form Approved 03/05/19
NCD 003 162 542 NC0004308 Badin Business Park, LLC CDC OMB No. 2040-0004
STORMTABLE D. •' • I
Provide data for the storm event(s) that resulted in the maximum daily discharges for the flow -weighted composite sample.
Number of Hours Between
Total Rainfall During Maximum Flow Rate
Duration of Storm Event Beginning of Storm Measured and Total Flow from Rain Event
Date of Storm Event (in hours) Storm Event End of Previous Measurable Rain During Rain Event (in gallons or specify units)
(in inches) Event (in gpm or specify units)
NA NA NA NA NA
Provide a description of the method of flow measurement or estimate.
EPA Form 3510-21F (Revised 3-19) Page 13

Parameter
I Result
I RL
I MDL
I Units
I Qualifier(s)
Cyanide, Total
< 0.002
0.006
0.002
mg/L
Phenolics, Total Recoverable
< 0.025
0.05
0.025
m L
Oil & Grease
< 0.66
2.4
0.66
mg/L
Ammonia
< 0.1
0.25
0.10
m /L
Chromium (hexavalent)
< 3
10
3.0
ug/L
H
Total Suspended Solids
21
2.5
2.5
m /L
Biochemical Oxygen Demand
8.5
2.0
2.0
m /L
H b
Parameter
Result
I RL
I MDL
I Units
IQualifiers)
Antimony
< 0.52
5
0.52
ug/L
Arsenic
< 0.86
5
0.86
u L
Beryllium
< 0.2
1
0.2
ug/L
Cadmium
< 0.078
0.7
0.078
ug/L
Chromium
< 2.6
5
2.6
ug/L
Copper
5.4
5
0.9
ug/L
Lead
0.87
1
0.34
ug/L
1
Mercury
< 0.08
0.5
0.08
ug/L
Nickel
4.1
5
1.8
ug/L
J
Selenium
< 1.2
5
1.2
ug/L
Silver
< 0.39
5
0.39
ug/L
Thallium
< 0.26
1
0.26
ug/L
Zinc
< 10
10
10
ug/L
Parameter
I Result
I RL
I MDL
I Units
I Qualifiers)
Acrolein
< 15
50
15
ug/L
H
Acrylonitrile
< 5.5
50
5.5
ug/L
H
Benzene
< 0.27
2
0.27
ug/L
Dichlorobromomethane
< 0.25
10
0.25
1 ug/L
Bromoform
< 0.59
10
0.59
ug/L
Bromomethane
< 3.7
10
3.7
ug/L
Carbon tetrachloride
< 0.3
2
0.3
ug/L
Chlorobenzene
< 0.15
10
0.15
ug/L
Chloroethane
< 4.6
5
4.6
ug/L
+
2-Chloroethyl vinyl ether
< 0.59
10
0.59
ug/L
H
Chloroform
< 0.27
2
0.27
ug/L
Chloromethane
0.87
10
0.54
ug/L
J
Chlorodibromomethane
< 0.39
10
0.39
ug/L
1, 1 -Dichloroethane
< 0.33
2
0.33
ug/L
1,2-Dichloroethane
< 0.25
2
0.25
ug/L
1,1-Dichloroethene
< 0.33
2
0.33
ug/L
trans-1,2-Dichloroethene
< 0.34
2
0.34
ug/L
1,2-Dichloropropane
< 0.22
2
0.22
ug/L
Page 1 of 4

Parameter
I Result
I RL
I MDL
I Units
I Qualifier(s)
cis-1,3-Dichloropropene
< 0.26
2
0.26
ug/L
trans- 1,3 -Dichloropropene
< 0.23
2
0.23
ug/L
Eth lbenzene
< 0.2
2
0.2
ug/L
Methylene Chloride
< 3.2
10
3.2
1 ug/L
1,1,2,2-Tetrachloroethane
< 0.4
2
0.4
ug/L
Tetrachloroethene
< 0.35
2
0.35
ug/L
Toluene
< 0.25
2
0.25
ug/L
1, 1, 1 -Trichloroethane
< 0.21
2
0.21
ug/L
1,1,2-Trichloroethane
< 0.32
2
0.32
ug/L
Trichloroethene
< 0.2
2
0.2
ug/L
Vin 1 chloride
< 0.4
10
0.4
ug/L
Parameter
Result
I RL
I MDL
I Units
I Qualifier(s)
1,2,4-Trichlorobenzene
< 0.54
9.6
0.54
ug/L
1,2-Diphenylhydrazine
< 0.83
9.6
0.83
ug/L
1,3-Dichlorobenzene
< 0.31
1
0.31
ug/L
1,4-Dichlorobenzene
< 0.31
1
0.31
1 ug/L
2,2'-oxybis[1-chloropropane]
< 0.82
9.6
0.82
ug/L
2,4,6-Trichlorophenol
< 0.79
9.6
0.79
ug/L
2,4-Dichlorophenol
< 1.1
9.6
1.1
ug/L
2,4-Dimethylphenol
< 3.8
9.6
3.8
ug/L
2,4-Dinitrophenol
< 9.6
48
9.6
ug/L
2,4-Dinitrotoluene
< 1.2
9.6
1.2
ug/L
2,6-Dinitrotoluene
< 1.1
9.6
1.1
ug/L
2-Chloronaphthalene
< 0.75
9.6
0.75
ug/L
2-Chlorophenol
< 0.87
9.6
0.87
ug/L
2-Nitrophenol
< 0.71
9.6
0.71
ug/L
3,3'-Dichlorobenzidine
< 29
58
29
ug/L
4,6-Dinitro-2-methylphenol
< 4.8
48
4.8
ug/L
4-bromophe7yl phenyl ether
< 0.77
9.6
0.77
ug/L
4-Chlorophenyl phenyl ether
< 0.78
9.6
0.78
ug/L
4-Nitrophenol
< 9.6
48
9.6
ug/L
Acenaphthene
< 0.72
9.6
0.72
ug/L
Acenaphthylene
< 0.77
9.6
0.77
ug/L
Anthracene
< 0.7
9.6
0.7
ug/L
Benzidine
< 40
77
40
ug/L
Benzo[a]anthracene
< 0.9
9.6
0.9
ug/L
Benzo[a]pyrene
< 0.71
9.6
0.71
ug/L
Benzo[b]fluoranthene
< 2.4
9.6
2.4
ug/L
Benzo[g,h,i]perylene
< 0.86
9.6
0.86
ug/L
Benzo[k]fluoranthene
< 0.87
9.6
0.87
ug/L
1,2-Dichlorobenzene
< 0.54
9.6
0.54
ug/L
Page 2 of 4

Parameter
Result
I RL
I MDL
I Units
I Qualifier(s)
Bis(2-chloroethoxy)methane
< 1.1
9.6
1.1
ug/L
Bis(2-chloroethyl)ether
< 1.1
9.6
1.1
ug/L
Bis(2-eth lhex 1) phthalate
< 1.5
9.6
1.5
ug/L
Butyl benzyl phthalate
< 1.2
9.6
1.2
ug/L
Chrysene
< 0.5
9.6
0.5
ug/L
Dibenz(a,h)anthracene
< 0.73
9.6
0.73
ug/L
Diethyl phthalate
< 0.83
9.6
0.83
ug/L
Dimethyl phthalate
< 0.93
9.6
0.93
ug/L
Di-n-butyl phthalate
< 0.85
9.6
0.85
ug/L
Di-n-octyl phthalate
< 1.3
9.6
1.3
ug/L
Fluoranthene
< 0.68
9.6
0.68
ug/L
Fluorene
< 0.89
9.6
0.89
ug/L
Hexachlorobenzene
< 0.78
9.6
0.78
ug/L
Hexachlorobutadiene
< 0.6
9.6
0.6
ug/L
Hexachlorocyclopentadiene
< 9.6
19
9.6
ug/L
Hexachloroethane
< 0.78
9.6
0.78
ug/L
Indeno[1,2,3-cd]pyrene
< 1.1
9.6
1.1
ug/L
Isophorone
< 0.87
9.6
0.87
ug/L
Naphthalene
< 0.67
9.6
0.67
ug/L
Nitrobenzene
< 0.56
9.6
0.56
ug/L
N-Nitrosodimeth lamine
< 9.6
19
9.6
ug/L
N-Nitrosodi-n-propylamine
< 0.71
9.6
0.71
ug/L
N-Nitrosodiphenylamine
< 0.88
9.6
0.88
ug/L
p-chloro-m-cresol
< 1.1
9.6
1.1
ug/L
Pentachlorophenol
< 1.7
48
1.7
ug/L
Phenanthrene
< 0.78
9.6
0.78
ug/L
Phenol
< 1.1
9.6
1.1
ug/L
,Pyrene
< 0.62
9.6
0.62
ug/L
Parameter
Result
I RL
I MDL
I Units
I Qualifier(s)
Aldrin
< 0.0019
0.048
0.0019
ug/L
alpha-BHC
< 0.00096
0.048
0.00096
ug/L
beta-BHC
< 0.0019
0.048
0.0019
ug/L
gamma-BHC (Lindane)
< 0.00096
0.048
0.00096
ug/L
delta-BHC
< 0.0019
0.048
0.0019
ug/L
Chlordane (technical)
< 0.15
0.48
0.15
ug/L
4,4'-DDT
< 0.00096
0.048
0.00096
ug/L
4,4'-DDE
< 0.00096
0.048
0.00096
ug/L
4,4'-DDD
< 0.0019
0.048
0.0019
ug/L
Dieldrin
< 0.0019
0.048
0.0019
ug/L
Endosulfan I
< 0.0019
0.048
0.0019
ug/L
Endosulfan II
< 0.0019
1 0.048
0.0019
ug/L
Page 3 of 4

Parameter
Result
I RL
I MDL
I Units
I Qualifier(s)
Endosulfan sulfate
< 0.0019
0.048
0.0019
ug/L
Endrin
< 0.00096
0.048
0.00096
ug/L
Endrin aldehyde
< 0.0038
0.048
0.0038
ug/L
Heptachlor
< 0.00096
0.048
0.00096
ug/L
Heptachlor epoxide
< 0.0019
0.048
0.0019
ug/L
PCB-1242
< 0.33
0.96
0.33
ug/L
PCB-1254
< 0.33
0.96
0.33
ug/L
PCB-1221
< 0.33
0.96
0.33
ug/L
PCB-1232
< 0.33
0.96
0.33
ug/L
PCB-1248
< 0.33
0.96
0.33
ug/L
PCB-1260
< 0.33
0.96
0.33
ug/L
Toxaphene
< 0.3
4.8
0.3
ug/L
PCB-1016
< 0.31
0.96
0.31
ug/L
Parameter
Result
I RL
I MDL
I Units
I Qualifier s
2,3,7,8 - TCDD
< 0.085
1 3.8
1 0.085
1 pg/L
H: Prepped or analyzed out of hold time
+: LCS and/or LCSD out of acceptable range; biased high
b: Result detected in Unseeded Control Blank
J: Result is less than the RL but greater than or equal to the MDL and the concentration
is an approximate value.
Page 4 of 4

urofins
Environment Testing
America
ANALYTICAL REPORT
Eurofins Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Tel: [phone]
Laboratory Job ID: 680-212367-1
Client Project/Site: Outfall CDC
For:
Alcoa Badin Works
293 Highway 740
Badin, North Carolina 28009
Attn: Randall Kiser
Authorized for release by.
311612022 4:27:30 PM
Bernard Kirkland, Lab Director
[phone]
Bernard. [e-mail]
Designee for
Sheila Hoffman, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for
accredited parameters, exceptions are noted in this report. This report may not be reproduced
except in full, and with written approval from the laboratory. For questions please contact the
Project Manager at the e-mail address or telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic signature is
intended to be the legally binding equivalent of a traditionally handwritten signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Sample Summary
Client: Alcoa Badin Works
Project/Site: Outfall CDC
Lab Sample ID Client Sample ID
680-212367-1 Outfall CDC
Matrix
Water
Collected Received
03/09/22 09:47 03/10/22 08:20
Job ID: 680-212367-1
Page 2 of 16
Eurofins Savannah
3/16/2022

Method Summary
Client: Alcoa Badin Works
Project/Site: Outfall CDC
Job ID: 680-212367-1
Method
Method Description
Protocol
Laboratory
300.0
Anions, Ion Chromatography
MCAWW
TAL SAV
601 OD
Metals (ICP)
SW846
TAL SAV
1664B
HEM and SGT-HEM
1664B
TAL SAV
2540 D-2011
Total Suspended Solids (Dried at 103-105°C)
SM
TAL SAV
351.2
Nitrogen, Total Kjeldahl
MCAWW
TAL SAV
365.4
Phosphorus, Total
EPA
TAL SAV
410.4-1993R2.0
COD
MCAWW
TAL SAV
5210E-2011
BOD, 5-Day
SM
TAL SAV
Total Nitrogen
Nitrogen, Total
EPA
TAL SAV
1664B
HEM and SGT-HEM (Aqueous)
1664B
TAL SAV
3010A
Preparation, Total Metals
SW846
TAL SAV
Digestion
Digestion, Hot Block
MCAWW
TAL SAV
Protocol References:
1664B = EPA-821-98-002
EPA = US Environmental Protection Agency
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
SM = "Standard Methods For The Examination Of Water And Wastewater"
SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates.
Laboratory References:
TAL SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins Savannah
Page 3 of 16 3/16/2022

Definitions/Glossary
Client: Alcoa Badin Works
Project/Site: Outfall CDC
Qualifiers
General Chemistry
Qualifier Qualifier Description
F1 MS and/or MSD recovery exceeds control limits.
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
c Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
oil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level'
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRIES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Job ID: 680-212367-1
Eurofins Savannah
Page 4 of 16 3/16/2022

Case Narrative
Client: Alcoa Badin Works
Project/Site: Outfall CDC
Job ID: 680-212367-1
Laboratory: Eurofins Savannah
Narrative
Receipt
The sample was received on 3/10/2022 8:20 AM. Unless otherwise noted below, the sample arrived in good condition, and where
required, properly preserved and on ice. The temperature of the cooler at receipt was 2.00 C.
Job ID: 680-212367-1
HPLC/IC
No analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page.
Metals
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.
General Chemistry
Method SM 521 OB: The method blank result associated with batch 680-710133 was higher than the method -required limit of 0.2 mg/L.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page
Eurofins Savannah
Page 5 of 16 3/16/2022

Client Sample Results
Client: Alcoa Badin Works
Job ID: 680-212367-1
Project/Site: Outfall CDC
Client Sample ID: Outfall CDC
Lab Sample ID: 680-212367-1
Date Collected: 03/09/22 09:47
Matrix: Water
Date Received: 03/10/22 08:20
Method: 300.0 - Anions, Ion Chromatography
Analyte
Result
Qualifier
RL
MDL Unit
D Prepared
Analyzed Dil Fac
Fluoride
1.3
0.10
mg/L
03/11/2201:40 1
Method: 6010D - Metals (ICP)
Analyte
Result
Qualifier
RL
MDL Unit
D Prepared
Analyzed Dil Fac
Aluminum
3900
200
ug/L
03/11/2208:59
03/11/2219:38 1
General Chemistry
Analyte
Result
Qualifier
RL
MDL Unit
D Prepared
Analyzed Dil Fac
Oil & Grease
<5.9
5.9
mg/L
03/15/22 08:51
03/15/22 11:30 1
Nitrogen, Kjeldahl
0.13
F1
0.10
mg/L
03/10/22 15:52
03/11/22 17:29 1
Phosphorus
<0.050
F1
0.050
mg/L
03/10/2215:52
03/11/2218:34 1
Chemical Oxygen Demand
16
10
mg/L
03/16/22 09:58 1
Analyte
Result
Qualifier
RL
RL Unit
D Prepared
Analyzed Dil Fac
Total Suspended Solids
12
2.5
mg/L
03/10/22 14:39 1
Biochemical Oxygen Demand
<2.0
2.0
mg/L
03/10/22 13:57 1
Nitrogen, Total
0.34
0.25
mg/L
03/15/22 16:30 1
Eurofins Savannah
Page 6 of 16 3/16/2022

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-212367-1
Project/Site: Outfall CDC
Method: 300.0 - Anions, Ion Chromatography
Lab Sample ID: MB 680-710161/33
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710161
MB MB
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Fluoride
<0.10
0.10 mg/L 03/10/22 21:02 1
Lab Sample ID: LCS 680-710161/34
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710161
Spike
LCS LCS %Rec.
Analyte
Added
Result Qualifier Unit D %Rec Limits
Fluoride
2.00
1.96 mg/L 98 90 - 110
Lab Sample ID: LCSD 680-710161135
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710161
Spike
LCSD LCSD %Rec. RPD
Analyte
Added
Result Qualifier Unit D %Rec Limits RPD Limit
Fluoride
2.00
1.97 mg/L 98 90 - 110 1 15
Method: 6010D - Metals (ICP)
Lab Sample ID: MB 680-710330/1-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710677
Prep Batch: 710330
MB MB
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Aluminum
<200
200 ug/L 03/11/2208:59 03/11/2219:18 1
Lab Sample ID: LCS 680-710330/2-A
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710677
Prep Batch: 710330
Spike
LCS LCS %Rec.
Analyte
Added
Result Qualifier Unit D %Rec Limits
Aluminum
5000
5080 ug/L 102 80 - 120
Method: 1664B - HEM and SGT-HEM
Lab Sample ID: MB 680-710795/1-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710886
Prep Batch: 710795
MB MB
Analyte
Result Qualifier
RL MDL Unit D Prepared Analyzed Dil Fac
Oil & Grease
<5.0
5.0 mg/L 03/15/22 08:51 03/15/22 11:30 1
Lab Sample ID: LCS 680-710795/2-A
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710886
Prep Batch: 710795
Spike
LCS LCS %Rec.
Analyte
Added
Result Qualifier Unit D %Rec Limits
Oil & Grease
40.0
35.80 mg/L 90 78 - 114
Eurofins Savannah
Page 7 of 16 3/16/2022

QC Sample Results
Client: Alcoa Badin Works
Project/Site: Outfall CDC
Job ID: 680-212367-1
Method: 1664B - HEM and SGT-HEM (Continued)
Lab Sample ID: LCSD 680-710795/3-A Client Sample ID: Lab Control Sample Dup
Matrix: Water Prep Type: Total/NA
Analysis Batch: 710886 Prep Batch: 710795
Spike LCSD LCSD %Rec. RPD
Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit
Oil & Grease 40.0 35.20 mg/L 88 78 - 114 2 18
Method: 2540 D-2011 - Total Suspended Solids (Dried at 103-105°C)
Lab Sample ID: MB 680-710232/1
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710232
MB MB
Analyte
Result Qualifier
RL
RL Unit
D Prepared Analyzed Dil Fac
Total Suspended Solids
<2.5
2.5
mg/L
03/10/22 14:39 1
Lab Sample ID: LCS 680-710232/2
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710232
Spike
LCS
LCS
%Rec.
Analyte
Added
Result
Qualifier
Unit D %Rec Limits
Total Suspended Solids
951
832
mg/L 87 80 - 120
Lab Sample ID: LCSD 680-710232/3
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710232
Spike
LCSD
LCSD
%Rec. RPD
Analyte
Added
Result
Qualifier
Unit D %Rec Limits RPD Limit
Total Suspended Solids
951
838
mg/L 88 80 - 120 1 25
Method: 351.2 - Nitrogen, Total Kjeldahl
Lab Sample ID: MB 680-710245/13-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710788
Prep Batch: 710245
MB MB
Analyte Result Qualifier
RL MDL Unit
D Prepared Analyzed Dil Fac
Nitrogen, Kjeldahl <0.20
0.20 mg/L
03/10/22 15:52 03/14/22 18:31 1
Lab Sample ID: LCS 680-710245/14-A
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710639
Prep Batch: 710245
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier Unit
D %Rec Limits
Nitrogen, Kjeldahl
2.00
2.00 mg/L
100 75 - 125
Lab Sample ID: 680-212367-1 MS
Client Sample ID: Outfall CDC
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710639
Prep Batch: 710245
Sample Sample
Spike
MS MS
%Rec.
Analyte Result Qualifier
Added
Result Qualifier Unit
D %Rec Limits
Nitrogen, Kjeldahl 0.13 F1
1.00
0.639 F1 mg/L
51 75 - 125
Eurofins Savannah
Page 8 of 16 3/16/2022

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-212367-1
Project/Site: Outfall CDC
Method: 351.2 - Nitrogen, Total Kjeldahl (Continued)
Lab Sample ID: 680-212367-1 MSD
Client Sample ID: Outfall CDC
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710639
Prep Batch: 710245
Sample
Sample
Spike
MSD MSD
%Rec. RPD
Analyte Result
Qualifier
Added
Result Qualifier Unit
D %Rec Limits RPD Limit
Nitrogen, Kjeldahl 0.13
F1
1.00
0.608 F1 mg/L
48 75 - 125 5 40
Method: 365.4 - Phosphorus, Total
Lab Sample ID: 680-212367-1 MS
Client Sample ID: Outfall CDC
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710640
Prep Batch: 710245
Sample
Sample
Spike
MS MS
%Rec.
Analyte Result
Qualifier
Added
Result Qualifier Unit
D %Rec Limits
Phosphorus <0.050
F1
1.00
0.533 F1 mg/L
53 90 - 110
Lab Sample ID: 680-212367-1 MSD
Client Sample ID: Outfall CDC
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710640
Prep Batch: 710245
Sample
Sample
Spike
MSD MSD
%Rec. RPD
Analyte Result
Qualifier
Added
Result Qualifier Unit
D %Rec Limits RPD Limit
Phosphorus <0.050
F1
1.00
0.571 F1 mg/L
57 90 - 110 7 30
Method: 410.4-1993 R2.0 - COD
Lab Sample ID: MB 680-711050/3
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 711050
MB MB
Analyte Result
Qualifier
RL MDL Unit
D Prepared Analyzed Dil Fac
Chemical Oxygen Demand
<10
10 mg/L
03/16/22 09:58 1
Lab Sample ID: LCS 680-711050/4
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 711050
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier Unit
D %Rec Limits
Chemical Oxygen Demand
50.0
54.6 mg/L
109 90 - 110
Method: 521OB-2011 - BOD, 5-Day
Lab Sample ID: USB 680-710133/4
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710133
USB USB
Analyte Result
Qualifier
RL RL Unit
D Prepared Analyzed Dil Fac
Biochemical Oxygen Demand
<2.0
2.0 mg/L
03/10/22 12:35 1
Lab Sample ID: LCS 680-710133/5
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 710133
Spike
LCS LCS
%Rec.
Analyte
Added
Result Qualifier Unit
D %Rec Limits
Biochemical Oxygen Demand
198
198 mg/L
100 85 - 115
Page 9 of 16
Eurofins Savannah
3/16/2022

QC Sample Results
Client: Alcoa Badin Works
Project/Site: Outfall CDC
Method: 521OB-2011 - BOD, 5-Day (Continued)
Lab Sample ID: LCSD 680-710133/6
Matrix: Water
Analysis Batch: 710133
Spike LCSD LCSD
Analyte Added Result Qualifier Unit
Biochemical Oxygen Demand 198 201 mg/L
Job ID: 680-212367-1
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
%Rec.
D %Rec Limits
102 85-115
RPD
RPD Limit
2 30
Eurofins Savannah
Page 10 of 16 3/16/2022

QC Association Summary
Client: Alcoa Badin Works
Project/Site: Outfall CDC
HPLC/IC
Analysis Batch: 710161
Job ID: 680-212367-1
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
300.0
MB 680-710161/33
Method Blank
Total/NA
Water
300.0
LCS 680-710161/34
Lab Control Sample
Total/NA
Water
300.0
LCSD 680-710161/35
Lab Control Sample Dup
Total/NA
Water
300.0
Metals
Prep Batch: 710330
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
3010A
MB 680-710330/1-A
Method Blank
Total/NA
Water
3010A
LCS 680-710330/2-A
Lab Control Sample
Total/NA
Water
3010A
Analysis Batch: 710677
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
6010D
710330
MB 680-710330/1-A
Method Blank
Total/NA
Water
6010D
710330
LCS 680-710330/2-A
Lab Control Sample
Total/NA
Water
6010D
710330
General Chemistry
Analysis Batch: 710133
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
521OB-2011
USB 680-710133/4
Method Blank
Total/NA
Water
521OB-2011
LCS 680-710133/5
Lab Control Sample
Total/NA
Water
521 OB-2011
LCSD 680-710133/6
Lab Control Sample Dup
Total/NA
Water
521 OB-2011
Analysis Batch: 710232
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
2540 D-2011
MB 680-710232/1
Method Blank
Total/NA
Water
2540 D-2011
LCS 680-710232/2
Lab Control Sample
Total/NA
Water
2540 D-2011
LCSD 680-710232/3
Lab Control Sample Dup
Total/NA
Water
2540 D-2011
Prep Batch: 710245
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
Digestion
MB 680-710245/13-A
Method Blank
Total/NA
Water
Digestion
LCS 680-710245/14-A
Lab Control Sample
Total/NA
Water
Digestion
680-212367-1 MS
Ouffall CDC
Total/NA
Water
Digestion
680-212367-1 MSD
Ouffall CDC
Total/NA
Water
Digestion
Analysis Batch: 710290
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
Total Nitrogen
Analysis Batch: 710639
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
351.2
710245
LCS 680-710245/14-A
Lab Control Sample
Total/NA
Water
351.2
710245
680-212367-1 MS
Ouffall CDC
Total/NA
Water
351.2
710245
0
a
Eurofins Savannah
Page 11 of 16 3/16/2022

QC Association Summary
Client: Alcoa Badin Works
Job ID: 680-212367-1
Project/Site: Outfall CDC
General Chemistry (Continued)
Analysis Batch: 710639 (Continued)
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1 MSD
Outfall CDC
Total/NA
Water
351.2
710245
Analysis Batch: 710640
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
365.4
710245
680-212367-1 MS
Ouffall CDC
Total/NA
Water
365.4
710245
680-212367-1 MSD
Outfall CDC
Total/NA
Water
365.4
710245
Analysis Batch: 710788
CLab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
MB 680-710245/13-A
Method Blank
Total/NA
Water
351.2
710245
Prep Batch: 710795
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
1664B
MB 680-710795/1-A
Method Blank
Total/NA
Water
1664B
LCS 680-710795/2-A
Lab Control Sample
Total/NA
Water
1664B
LCSD 680-710795/3-A
Lab Control Sample Dup
Total/NA
Water
1664B
Analysis Batch: 710886
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
1664B
710795
MB 680-710795/1-A
Method Blank
Total/NA
Water
1664B
710795
LCS 680-710795/2-A
Lab Control Sample
Total/NA
Water
1664B
710795
LCSD 680-710795/3-A
Lab Control Sample Dup
Total/NA
Water
1664B
710795
Analysis Batch: 711050
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-212367-1
Outfall CDC
Total/NA
Water
410.4-1993 R2.0
MB 680-711050/3
Method Blank
Total/NA
Water
410.4-1993 R2.0
LCS 680-711050/4
Lab Control Sample
Total/NA
Water
410.4-1993 R2.0
Eurofins Savannah
Page 12 of 16 3/16/2022

Lab Chronicle
Client: Alcoa Badin Works
Project/Site: Outfall CDC
Job ID: 680-212367-1
Client Sample ID: Outfall CDC Lab Sample ID: 680-212367-1
Date Collected: 03/09/22 09:47 Matrix: Water
Date Received: 03/10/22 08:20
Prep Type
Batch Batch
Type Method
Total/NA
Analysis 300.0
Instrument ID: CICK
Total/NA
Prep 3010A
Total/NA
Analysis 601OD
Instrument ID: ICPH
Total/NA
Prep 1664B
Total/NA
Analysis 1664B
Instrument ID: NoEquip
Total/NA
Analysis 2540 D-2011
Instrument ID: NOEQUIP
Total/NA
Prep Digestion
Total/NA
Analysis 351.2
Instrument ID: SEAL 2
Total/NA
Prep Digestion
Total/NA
Analysis 365.4
Instrument ID: SEAL 2
Total/NA
Analysis 410.4-1993 R2.0
Instrument ID: SPC7
Total/NA
Analysis 521OB-2011
Instrument ID: BOD 2
Total/NA
Analysis Total Nitrogen
Instrument ID: NOEQUIP
Dil
Run Factor
Initial
Amount
Final
Amount
Batch
Number
Prepared
or Analyzed
Analyst
Lab
1
5 mL
5 mL
710161
03/11/22 01:40
OK
TAL SAV
50 mL
50 mL
710330
03/11/22 08:59
JE
TAL SAV
1
710677
03/11/22 19:38
BCB
TAL SAV
425 mL
500 mL
710795
03/15/22 08:51
JAS
TAL SAV
1
710886
03/15/22 11:30
JAS
TAL SAV
1
1000 mL
1000 mL
710232
03/10/22 14:39
PG
TAL SAV
40 mL
20 mL
710245
03/10/22 15:52
SM
TAL SAV
1
710639
03/11/22 17:29
NVF
TAL SAV
40 mL
20 mL
710245
03/10/22 15:52
SM
TAL SAV
1
2 mL
2 mL
710640
03/11/22 18:34
NVF
TAL SAV
1
2 mL
2 mL
711050
03/16/22 09:58
ALG
TAL SAV
1
710133
03/10/22 13:57
OLB
TAL SAV
1
710290
03/15/22 16:30
TJW
TAL SAV
Laboratory References:
TAL SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins Savannah
Page 13 of 16 3/16/2022

.0 a)
G LL
C O N
V
> M
U) a) a
V) V (D co
C 0
m
N
y. m rn
J c N
O > O
W to (n a
v
N
L15
r v v
�
Z
W N O O v O N N
m d O O N 0 0 0 a
C
any.
= Z¢ Z Z Z S N Q ma o
a
c
Sc
m
m
m
a 2zoaoa n�» tv
d
.�
c
E
(oi
E
0
E
0
00 co
(+)LO
O
c:
0
V o
�£ «
c
�-
N
C14C
N u ��
ma `m0Eu�
CL
b�
C) O
N m
N =ZNZZ� a¢ c�0 W W N
` L°
OU (Q
(L a
O. amC)a W w (D 2 _->YJ O
>
N)
s,ieule;uoo go )egwnN le)oy
;
M
b
E
E
E
E
v
ors
a
m
m
N
rnV
uM
a
(e
o
o
q
`o
ate..
y
yyy
LS
c
~
K
(SSl) pepuedsnS lelol'splloS • O069Z
Z
N
(s
a,
O
T
E
a)E
Im
GOB • BOLZ9
Z'...
ny
y
w
U
U
Q
c
essejo pue 110- B699L'
N
N U
O
m
ownulwnIV
(OOW) • 00L09
y
2
a
a
o
E
m
W
IeL01'uOBallN'6'OL6'6'99C'se)d Z'E9E'Z L9E
E
epUonld (GOW) Gel wJE)ao 00C
z:,.
.�
-
- -7t
E
m
E
p
(ON )o set,) eldweS
peja)lld plol:j
1a'
pp
m
nowt
J 2
W CO
c
c
c
C.
E
E
E
m
�
N
U
U
U
e
kA
a
p
n o
o
M
tirl
Z
(n~v�d
a
m
y
�ry
cJ
EE'
1
a
N ~
m
7
T
«
y
y
LL
G
0:
CO
U
—"
ti
o
z
a
o
E
E
E
oE
voi
O rO
ii
0y
00
E
:3
mo
a
O
a
a (o
N
o
c
='
�
a
m
N
c
N
(gyp
c
N
V)
N
O
Z
O
U
0o
O m
E
-
O
E
—
�
U
0
E
0
Cp.
41
—
A
N
a+
E
N
O
v
a
m
m
4
w
cr
N
C Z
N
3
vco
LL
Cm
+'
o Y
m
m
a)
o. C)
N
w
Y
m
N
L)
p
N
Y
$
c
O}
0}
c@
w
a o
V
Mp
14
CC)
N
v
U
c�a.
v
C�
v
«
E
y Z
O
j
N
Q�
E
c
c
U 4
(.)
U w
co) Q
o a)
a N
N¢
U m
N Z
t 0
a n
E
W ro
a
0
m
V)
O
Q.
O
W
m
E
w
a
w
0
Page 14 of 16
3/16/2022

Login Sample Receipt Checklist
Client: Alcoa Badin Works Job Number: 680-212367-1
Login Number: 212367
List Number: 1
Creator: Padayao, Abigail
Question
List Source: Eurofins Savannah
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey
N/A
meter.
The cooler's custody seal, if present, is intact.
True
Sample custody seals, if present, are intact.
True
The cooler or samples do not appear to have been compromised or
True
tampered with.
Samples were received on ice.
True
Cooler Temperature is acceptable.
True
Cooler Temperature is recorded.
True
COC is present.
True
COC is filled out in ink and legible.
True
COC is filled out with all pertinent information.
True
Is the Field Sampler's name present on COC?
True
There are no discrepancies between the containers received and the COC.
True
Samples are received within Holding Time (excluding tests with immediate
True
HTs)
Sample containers have legible labels.
True
Containers are not broken or leaking.
True
Sample collection date/times are provided.
True
Appropriate sample containers are used.
True
Sample bottles are completely filled.
True
Sample Preservation Verified.
True
There is sufficient vol. for all requested analyses, incl. any requested
True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is
True
<6mm (1/4").
Multiphasic samples are not present.
True
Samples do not require splitting or compositing.
True
Residual Chlorine Checked.
N/A
Eurofins Savannah
Page 15 of 16 3/16/2022

Accreditation/Certification Summary
Client: Alcoa Badin Works
Project/Site: Outfall CDC
Laboratory: Eurofins Savannah
The accreditations/certifications listed below are applicable to this report.
North Carolina (WW/SW)
State
Identification Number Expiration Date
269 12-31-22
Job ID: 680-212367-1
Eurofins Savannah
Page 16 of 16 3/16/2022

urofins
Environment Testing
America
ANALYTICAL REPORT
Eurofins Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Tel: [phone]
Laboratory Job ID: 680-218341-1
Client Project/Site: 06010-1805-001/Outfalls SW & CDC
For:
Alcoa Badin Works
293 Highway 740
Badin, North Carolina 28009
Attn: Randall Kiser
Authorized for release by:
712512022 2:38:35 PM
Sheila Hoffman, Project Manager II
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI
requirements for accredited parameters, exceptions are noted in this report. This
report may not be reproduced except in full, and with written approval from the
laboratory. For questions please contact the Project Manager at the e-mail address or
telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic
signature is intended to be the legally binding equivalent of a traditionally handwritten
signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Sample Summary
Client: Alcoa Badin Works Job ID: 680-218341-1
Project/Site: 06010-1805-001/Outfalls SW & CDC
Lab Sample ID
Client Sample ID
Matrix
Collected
Received
680-218341-1
Outfall 002 - SW
Water
07/13/22 18:57
07/15/22 08:50
680-218341-2
Outfall 004 - SW
Water
07/13/22 18:04
07/15/22 08:50
680-218341-3
Outfall 017 - SW
Water
07/13/22 17:55
07/15/22 08:50
680-218341-4
Outfall 018 - SW
Water
07/13/22 18:30
07/15/22 08:50
680-218341-5
Outfall 022 - SW
Water
07/13/22 18:13
07/15/22 08:50
680-218341-6
Outfall - CDC
Water
07/13/22 18:20
07/15/22 08:50
Eurofins Savannah
Page 2 of 16 7/25/2022

Method Summary
Client: Alcoa Badin Works
Project/Site: 06010-1805-001/Outfalls SW & CDC
Job ID: 680-218341-1
Method Method Description
Protocol
Laboratory
300.0 Anions, Ion Chromatography
MCAWW
TAL SAV
601 OD Metals (ICP)
SW846
TAL SAV
2540 D-2011 Total Suspended Solids (Dried at 103-105°C)
SM
TAL SAV
410.4-1993R2.0 COD
MCAWW
TAL SAV
3010A Preparation, Total Metals
SW846
TAL SAV
Protocol References:
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
SM = "Standard Methods For The Examination Of Water And Wastewater"
SW846 ='Test Methods For Evaluating Solid Waste, Physical/Chemical Methods",
Third Edition, November 1986 And Its Updates.
Laboratory References:
TAL SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Eurofins Savannah
Page 3 of 16 7/25/2022

Definitions/Glossary
Client: Alcoa Badin Works Job ID: 680-218341-1
Project/Site: 06010-1805-001/Outfalls SW & CDC
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
rX Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
oil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level'
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRIES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Savannah
Page 4 of 16 7/25/2022

Client Sample Results
Client: Alcoa Badin Works
Project/Site: 06010-1805-001/Outfalls SW & CDC
Client Sample ID: Outfall 002 - SW
Date Collected: 07/13/22 18:57
Date Received: 07/15/22 08:50
Method: 300.0 -Anions, Ion Chromatography
Analyte
Result Qualifier
Fluoride
1.1
Method: 6010D - Metals (ICP)
Analyte
Result Qualifier
Aluminum
200
General Chemistry
Analyte
Result Qualifier
Chemical Oxygen Demand
10
Analyte
Result Qualifier
Total Suspended Solids
2.5
Client Sample ID: Outfall 004 - SW
Date Collected: 07/13/22 18:04
Date Received: 07/15/22 08:50
Method: 300.0 -Anions, Ion Chromatography
Analyte
Result Qualifier
Fluoride
2.1
Method: 6010D - Metals (ICP)
Analyte
Result Qualifier
Aluminum
410
General Chemistry
Analyte
Result Qualifier
Chemical Oxygen Demand
<10
Analyte
Result Qualifier
Total Suspended Solids
<2.5
Client Sample ID: Outfall 017 - SW
Date Collected: 07/13/22 17:55
Date Received: 07/15/22 08:50
Method: 300.0 -Anions, Ion Chromatography
Analyte
Result Qualifier
Fluoride
0.26
Method: 6010D - Metals (ICP)
Analyte
Result Qualifier
Aluminum
<200
General Chemistry
Analyte
Result Qualifier
Chemical Oxygen Demand
23
Analyte
Result Qualifier
Total Suspended Solids
<2.5
Job ID: 680-218341-1
Lab Sample ID: 680-218341-1
Matrix: Water
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
0.10
mg/L
07/22/2211:28
1
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
200
ug/L
07/18/22 07:48
07/18/22 18:19
1
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
10
mg/L
07/22/2210:45
1
RL
RL
Unit
D
Prepared
Analyzed
Dil Fac
2.5
mg/L
07/15/22 11:31
1 I`[ ]
Lab Sample ID: 680-218341-2
Matrix: Water
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
0.10
RL
MDL
mg/L
Unit
D
Prepared
07/22/2212:06
Analyzed
1
Dil Fac
200
RL
MDL
ug/L
Unit
D
07/18/22 07:48
Prepared
07/18/22 18:27
Analyzed
1
Dil Fac
10
RL
RL
mg/L
Unit
D
Prepared
07/22/2210:45
Analyzed
1
Dil Fac
2.5
mg/L
07/15/2211:31
1
Lab Sample ID: 680-218341-3
Matrix: Water
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
0.10
RL
MDL
mg/L
Unit
D
Prepared
07/22/2212:19
Analyzed
1
Dil Fac
200
RL
MDL
ug/L
Unit
D
07/18/22 07:48
Prepared
07/18/22 18:30
Analyzed
1
Dil Fac
10
RL
RL
mg/L
Unit
D
Prepared
07/22/2210:45
Analyzed
1
Dil Fac
2.5
mg/L
07/15/2211:31
1
Page 5 of 16
Eurofins Savannah
7/25/2022

Client Sample Results
Client: Alcoa Badin Works
Job ID: 680-218341-1
Project/Site: 06010-1805-001/Outfalls SW & CDC
Client Sample ID: Outfall 018 - SW
Lab Sample ID: 680-218341-4
Date Collected: 07/13/22 18:30
Matrix: Water
Date Received: 07/15/22 08:50
Method: 300.0 -Anions, Ion Chromatography
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Fluoride
<0.10
0.10
mg/L
—
07/22/2212:32 1
Method: 6010D - Metals (ICP)
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Aluminum
280
200
ug/L
07/18/22 07:48
07/18/22 18:33 1
General Chemistry
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Chemical Oxygen Demand
31
10
mg/L
07/22/22 10:45 1
Analyte
Result Qualifier
RL
RL
Unit
D
Prepared
Analyzed Dil Fac
Total Suspended Solids
3.4
2.5
mg/L
07/15/22 11:31 1 I`[ ]
Client Sample ID: Outfall 022 - SW
Lab Sample ID: 680-218341-5
Date Collected: 07/13/22 18:13
Matrix: Water
Date Received: 07/15/22 08:50
Method: 300.0 -Anions, Ion Chromatography
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Fluoride
<0.10
0.10
mg/L
07/22/2212:44 1
Method: 6010D - Metals (ICP)
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Aluminum
<200
200
ug/L
07/18/22 07:48
07/18/22 18:35 1
General Chemistry
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Chemical Oxygen Demand
18
10
mg/L
07/22/22 10:45 1
Analyte
Result Qualifier
RL
RL
Unit
D
Prepared
Analyzed Dil Fac
Total Suspended Solids
<2.5
2.5
mg/L
07/15/22 11:31 1
Client Sample ID: Outfall - CDC
Lab Sample ID: 680-218341-6
Date Collected: 07/13/22 18:20
Matrix: Water
Date Received: 07/15/22 08:50
Method: 300.0 -Anions, Ion Chromatography
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Fluoride
0.98
0.10
mg/L
07/22/2212:57 1
Method: 6010D - Metals (ICP)
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Aluminum
800
200
ug/L
07/18/22 07:48
07/18/22 18:38 1
General Chemistry
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
Chemical Oxygen Demand
18
10
mg/L
07/22/22 10:45 1
Analyte
Result Qualifier
RL
RL
Unit
D
Prepared
Analyzed Dil Fac
Total Suspended Solids
16
2.5
mg/L
07/18/22 11:27 1
Page 6 of 16
Eurofins Savannah
7/25/2022

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-218341-1
Project/Site: 06010-1805-001/Outfalls SW & CDC
Method: 300.0 -Anions, Ion Chromatography
Lab Sample ID: MB 680-732116/2
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 732116
MB MB
Analyte
Result Qualifier
RL MDL Unit
D Prepared Analyzed Dil Fac
Fluoride
<0.10
0.10 mg/L
07/22/22 09:50 1
Lab Sample ID: LCS 680-732116/3
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 732116
Spike
LCS LCS
%Rec
Analyte
Added
Result Qualifier
Unit D %Rec Limits
Fluoride
2.00
1.92
mg/L 96 90 - 110
Lab Sample ID: LCSD 680-732116/4
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 732116
Spike
LCSD LCSD
%Rec RPD
Analyte
Added
Result Qualifier
Unit D %Rec Limits RPD Limit
Fluoride
2.00
2.02
mg/L 101 90 - 110 5 15
Lab Sample ID: LLCS 680-732116/5
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 732116
Spike
LLCS LLCS
%Rec
Analyte
Added
Result Qualifier
Unit D %Rec Limits
Fluoride
0.100
0.119
mg/L 119 50 - 150
Lab Sample ID: 680-218341-1 MS
Client Sample ID: Outfall 002 - SW
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 732116
Sample Sample
Spike
MS MS
%Rec
Analyte
Result Qualifier
Added
Result Qualifier
Unit D %Rec Limits
Fluoride
1.1
2.00
3.38
mg/L 112 80 - 120
Lab Sample ID: 680-218341-1 MSD
Client Sample ID: Outfall 002 - SW
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 732116
Sample Sample
Spike
MSD MSD
%Rec RPD
Analyte
Result Qualifier
Added
Result Qualifier
Unit D %Rec Limits RPD Limit
Fluoride
1.1
2.00
3.34
mg/L 110 80 - 120 1 15
Method: 6010D - Metals (ICP)
Lab Sample ID: MB 680-731127/1-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 731387
Prep Batch: 731127
MB MB
Analyte
Result Qualifier
RL MDL Unit
D Prepared Analyzed Dil Fac
Aluminum
<200
200 ug/L
07/18/22 07:48 07/18/22 18:01 1
Page 7 of 16
Eurofins Savannah
7/25/2022

QC Sample Results
Client: Alcoa Badin Works
Project/Site: 06010-1805-001/Outfalls SW & CDC
Method: 6010D - Metals (ICP) (Continued)
Lab Sample ID: LCS 680-731127/2-A
Matrix: Water
Analysis Batch: 731387
Spike LCS LCS
Analyte Added Result Qualifier Unit
Aluminum 5000 5050 ug/L
Method: 2540 D-2011 - Total Suspended Solids (Dried at 103-105°C)
Job ID: 680-218341-1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Prep Batch: 731127
%Rec
D %Rec Limits
101 80 - 120
Lab Sample ID: MB 680-730904/1
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 730904
MB MB
Analyte
Result Qualifier
RL
RL Unit
D Prepared Analyzed Dil Fac
Total Suspended Solids
<2.5
2.5
mg/L
07/15/22 11:31 1
Lab Sample ID: LCS 680-730904/2
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 730904
Spike
LCS
LCS
%Rec
Analyte
Added
Result
Qualifier
Unit D %Rec Limits
Total Suspended Solids
951
810
mg/L 85 80 - 120
Lab Sample ID: LCSD 680-730904/3
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 730904
Spike
LCSD
LCSD
%Rec RPD
Analyte
Added
Result
Qualifier
Unit D %Rec Limits RPD Limit
Total Suspended Solids
951
796
mg/L 84 80 - 120 2 25
Lab Sample ID: MB 680-731215/1
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 731215
MB MB
Analyte
Result Qualifier
RL
RL Unit
D Prepared Analyzed Dil Fac
Total Suspended Solids
<2.5
2.5
mg/L
07/18/22 11:27 1
Lab Sample ID: LCS 680-731215/2
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 731215
Spike
LCS
LCS
%Rec
Analyte
Added
Result
Qualifier
Unit D %Rec Limits
Total Suspended Solids
951
804
mg/L 85 80 - 120
Lab Sample ID: LCSD 680-731215/3
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 731215
Spike
LCSD
LCSD
%Rec RPD
Analyte
Added
Result
Qualifier
Unit D %Rec Limits RPD Limit
Total Suspended Solids
951
784
mg/L 82 80 - 120 3 25
Page 8 of 16
Eurofins Savannah
7/25/2022

QC Sample Results
Client: Alcoa Badin Works
Project/Site: 06010-1805-001/Outfalls SW & CDC
Method: 410.4-1993 R2.0 - COD
Lab Sample ID: MB 680-732175/3
Matrix: Water
Analysis Batch: 732175
Analyte
Chemical Oxygen Demand
Lab Sample ID: LCS 680-732175/4
Matrix: Water
Analysis Batch: 732175
Analyte
Chemical Oxygen Demand
Job ID: 680-218341-1
Client Sample ID: Method Blank
Prep Type: Total/NA
MB MB
Result Qualifier RL MDL Unit D Prepared Analyzed Dil Fac
<10 10 mg/L 07/22/2210:45 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec
Added Result Qualifier Unit D %Rec Limits
50.0 53.0 mg/L 106 90 - 110
Eurofins Savannah
Page 9 of 16 7/25/2022

QC Association Summary
Client: Alcoa Badin Works
Project/Site: 06010-1805-001/Outfalls SW & CDC
HPLC/IC
Job ID: 680-218341-1
Analysis Batch: 732116
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
680-218341-1
Outfall 002 - SW
Total/NA
Water
300.0
680-218341-2
Outfall 004 - SW
Total/NA
Water
300.0
680-218341-3
Outfall 017 - SW
Total/NA
Water
300.0
680-218341-4
Outfall 018 - SW
Total/NA
Water
300.0
680-218341-5
Outfall 022 - SW
Total/NA
Water
300.0
680-218341-6
Outfall - CDC
Total/NA
Water
300.0
MB 680-732116/2
Method Blank
Total/NA
Water
300.0
LCS 680-732116/3
Lab Control Sample
Total/NA
Water
300.0
LCSD 680-732116/4
Lab Control Sample Dup
Total/NA
Water
300.0
LLCS 680-732116/5
Lab Control Sample
Total/NA
Water
300.0
680-218341-1 MS
Outfall 002 - SW
Total/NA
Water
300.0
680-218341-1 MSD
Outfall 002 - SW
Total/NA
Water
300.0
Metals
Prep Batch: 731127
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-218341-1
Outfall 002 - SW
Total/NA
Water
3010A
680-218341-2
Outfall 004 - SW
Total/NA
Water
3010A
680-218341-3
Outfall 017 - SW
Total/NA
Water
3010A
680-218341-4
Outfall 018 - SW
Total/NA
Water
3010A
680-218341-5
Outfall 022 - SW
Total/NA
Water
3010A
680-218341-6
Outfall - CDC
Total/NA
Water
3010A
MB 680-731127/1-A
Method Blank
Total/NA
Water
3010A
LCS 680-731127/2-A
Lab Control Sample
Total/NA
Water
3010A
Analysis Batch: 731387
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-218341-1
Outfall 002 - SW
Total/NA
Water
6010D
731127
680-218341-2
Outfall 004 - SW
Total/NA
Water
6010D
731127
680-218341-3
Outfall 017 - SW
Total/NA
Water
6010D
731127
680-218341-4
Outfall 018 - SW
Total/NA
Water
6010D
731127
680-218341-5
Outfall 022 - SW
Total/NA
Water
6010D
731127
680-218341-6
Outfall - CDC
Total/NA
Water
6010D
731127
MB 680-731127/1-A
Method Blank
Total/NA
Water
6010D
731127
LCS 680-731127/2-A
Lab Control Sample
Total/NA
Water
6010D
731127
General Chemistry
Analysis Batch: 730904
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-218341-1
Outfall 002 - SW
Total/NA
Water
2540 D-2011
680-218341-2
Outfall 004 - SW
Total/NA
Water
2540 D-2011
680-218341-3
Outfall 017 - SW
Total/NA
Water
2540 D-2011
680-218341-4
Outfall 018 - SW
Total/NA
Water
2540 D-2011
680-218341-5
Outfall 022 - SW
Total/NA
Water
2540 D-2011
MB 680-730904/1
Method Blank
Total/NA
Water
2540 D-2011
LCS 680-730904/2
Lab Control Sample
Total/NA
Water
2540 D-2011
LCSD 680-730904/3
Lab Control Sample Dup
Total/NA
Water
2540 D-2011
Eurofins Savannah
Page 10 of 16 7/25/2022

QC Association Summary
Client: Alcoa Badin Works
Project/Site: 06010-1805-001/Outfalls SW & CDC
General Chemistry
Analysis Batch: 731215
Lab Sample ID
Client Sample ID
680-218341-6
Outfall - CDC
MB 680-731215/1
Method Blank
LCS 680-731215/2
Lab Control Sample
LCSD 680-731215/3
Lab Control Sample Dup
Analysis Batch: 732175
Lab Sample ID
Client Sample ID
680-218341-1
Outfall 002 - SW
680-218341-2
Outfall 004 - SW
680-218341-3
Outfall 017 - SW
680-218341-4
Outfall 018 - SW
680-218341-5
Outfall 022 - SW
680-218341-6
Outfall - CDC
MB 680-732175/3
Method Blank
LCS 680-732175/4
Lab Control Sample
Job ID: 680-218341-1
Prep Type
Matrix
Method Prep Batch
Total/NA
Water
2540 D-2011
Total/NA
Water
2540 D-2011
Total/NA
Water
2540 D-2011
Total/NA
Water
2540 D-2011
Prep Type
Matrix
Method Prep Batch
Total/NA
Water
410.4-1993 R2.0
Total/NA
Water
410.4-1993 R2.0
Total/NA
Water
410.4-1993 R2.0
Total/NA
Water
410.4-1993 R2.0
Total/NA
Water
410.4-1993 R2.0
Total/NA
Water
410.4-1993 R2.0
Total/NA
Water
410.4-1993 R2.0
Total/NA
Water
410.4-1993 R2.0
Page 11 of 16
Eurofins Savannah
7/25/2022

Lab Chronicle
Client: Alcoa Badin Works
Job ID: 680-218341-1
Project/Site: 06010-1805-001/Outfalls SW & CDC
Client Sample ID: Outfall 002 - SW
Lab Sample ID: 680-218341-1
Date Collected: 07/13/22 18:57
Matrix: Water
Date Received: 07/15/22 08:50
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Analysis 300.0
1
5 mL
5 mL
732116
07/22/22 11:28
AF
TAL SAV
Instrument ID: CICK
Total/NA Prep 3010A
50 mL
50 mL
731127
07/18/22 07:48
RR
TAL SAV
Total/NA Analysis 601 OD
1
731387
07/18/22 18:19
BJB
TAL SAV
Instrument ID: ICPH
Total/NA Analysis 2540 D-2011
1
1000 mL
1000 mL
730904
07/15/22 11:31
PG
TAL SAV
Instrument ID: NOEQUIP
Total/NA Analysis 410.4-1993 R2.0
1
2 mL
2 mL
732175
07/22/22 10:45
ALG
TAL SAV
Instrument ID: SPC7
Client Sample ID: Outfall 004 - SW
Lab Sample ID: 680-218341-2
Date Collected: 07/13/22 18:04
Matrix: Water
Date Received: 07/15/22 08:50
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Analysis 300.0
1
5 mL
5 mL
732116
07/22/22 12:06
AF
TAL SAV
Instrument ID: CICK
Total/NA Prep 3010A
50 mL
50 mL
731127
07/18/22 07:48
RR
TAL SAV
Total/NA Analysis 601 OD
1
731387
07/18/22 18:27
BJB
TAL SAV
Instrument ID: ICPH
Total/NA Analysis 2540 D-2011
1
1000 mL
1000 mL
730904
07/15/22 11:31
PG
TAL SAV
Instrument ID: NOEQUIP
Total/NA Analysis 410.4-1993 R2.0
1
2 mL
2 mL
732175
07/22/22 10:45
ALG
TAL SAV
Instrument ID: SPC7
Client Sample ID: Outfall 017 - SW
Lab Sample ID: 680-218341-3
Date Collected: 07/13/22 17:55
Matrix: Water
Date Received: 07/15/22 08:50
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Analysis 300.0
1
5 mL
5 mL
732116
07/22/22 12:19
AF
TAL SAV
Instrument ID: CICK
Total/NA Prep 3010A
50 mL
50 mL
731127
07/18/22 07:48
RR
TAL SAV
Total/NA Analysis 6010D
1
731387
07/18/22 18:30
BJB
TAL SAV
Instrument ID: ICPH
Total/NA Analysis 2540 D-2011
1
1000 mL
1000 mL
730904
07/15/22 11:31
PG
TAL SAV
Instrument ID: NOEQUIP
Total/NA Analysis 410.4-1993 R2.0
1
2 mL
2 mL
732175
07/22/22 10:45
ALG
TAL SAV
Instrument ID: SPC7
Page 12 of 16
Eurofins Savannah
7/25/2022

Lab Chronicle
Client: Alcoa Badin Works
Job ID: 680-218341-1
Project/Site: 06010-1805-001/Outfalls SW & CDC
Client Sample ID: Outfall 018 - SW
Lab Sample ID: 680-218341-4
Date Collected: 07/13/22 18:30
Matrix: Water
Date Received: 07/15/22 08:50
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Analysis 300.0
1
5 mL
5 mL
732116
07/22/22 12:32
AF
TAL SAV
Instrument ID: CICK
Total/NA Prep 3010A
50 mL
50 mL
731127
07/18/22 07:48
RR
TAL SAV
Total/NA Analysis 601 OD
1
731387
07/18/22 18:33
BJB
TAL SAV
Instrument ID: ICPH
Total/NA Analysis 2540 D-2011
1
1000 mL
1000 mL
730904
07/15/22 11:31
PG
TAL SAV
Instrument ID: NOEQUIP
Total/NA Analysis 410.4-1993 R2.0
1
2 mL
2 mL
732175
07/22/22 10:45
ALG
TAL SAV
Instrument ID: SPC7
Client Sample ID: Outfall 022 - SW
Lab Sample ID: 680-218341-5
Date Collected: 07/13/22 18:13
Matrix: Water
Date Received: 07/15/22 08:50
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Analysis 300.0
1
5 mL
5 mL
732116
07/22/22 12:44
AF
TAL SAV
Instrument ID: CICK
Total/NA Prep 3010A
50 mL
50 mL
731127
07/18/22 07:48
RR
TAL SAV
Total/NA Analysis 601 OD
1
731387
07/18/22 18:35
BJB
TAL SAV
Instrument ID: ICPH
Total/NA Analysis 2540 D-2011
1
1000 mL
1000 mL
730904
07/15/22 11:31
PG
TAL SAV
Instrument ID: NOEQUIP
Total/NA Analysis 410.4-1993 R2.0
1
2 mL
2 mL
732175
07/22/22 10:45
ALG
TAL SAV
Instrument ID: SPC7
Client Sample ID: Outfall - CDC
Lab Sample ID: 680-218341-6
Date Collected: 07/13/22 18:20
Matrix: Water
Date Received: 07/15/22 08:50
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst
Lab
Total/NA Analysis 300.0
1
5 mL
5 mL
732116
07/22/22 12:57
AF
TAL SAV
Instrument ID: CICK
Total/NA Prep 3010A
50 mL
50 mL
731127
07/18/22 07:48
RR
TAL SAV
Total/NA Analysis 6010D
1
731387
07/18/22 18:38
BJB
TAL SAV
Instrument ID: ICPH
Total/NA Analysis 2540 D-2011
1
1000 mL
1000 mL
731215
07/18/22 11:27
PG
TAL SAV
Instrument ID: NOEQUIP
Total/NA Analysis 410.4-1993 R2.0
1
2 mL
2 mL
732175
07/22/22 10:45
ALG
TAL SAV
Instrument ID: SPC7
Laboratory References:
TAL SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
Page 13 of 16
Eurofins Savannah
7/25/2022

16
>>€
`i
PAP
O
z
O
z
01
E
o
Z
.'
a
N
a
4)
o
o.
a`)
O
U
o
c
�°
iV A. _
n
E
E
L
Z
Z
wnulwnlVl�4ol
x
x
x:
xC
X
,.
a
z
n
a
Lo
a
YfsLU
x
x
X
o' 4 to - OOS V43) splio"ld IL704
z
o'
(Vow O:t IQ) S.SI
x
x
K
X
a
z
o.:
z
`
on'
x
X
X
X
X
m�
o�
o
a
a
v
a
a
�-
o
O
Z
Z
J
� �
�
c
N
C
E
a o
IL O
�;
C t'C M 0
C •�
z ^�
10. �
L1
z NCFW
m��
X
X
x
X
x
iC
3r
c
ss±
s c 13 'o
ao
-�
? v
z
w
rl
rl
N
a h
a
a
t�
a �
W
~U
,T
5i c
f
f
f
(3
Ti n)
m
cm
O
N
m
Lk-
'
o
o
o
5/2022
0

Login Sample Receipt Checklist
Client: Alcoa Badin Works Job Number: 680-218341-1
Login Number: 218341
List Number: 1
Creator: Padayao, Abigail
Question
List Source: Eurofins Savannah
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey
N/A
meter.
The cooler's custody seal, if present, is intact.
True
Sample custody seals, if present, are intact.
True
The cooler or samples do not appear to have been compromised or
True
tampered with.
Samples were received on ice.
True
Cooler Temperature is acceptable.
True
Cooler Temperature is recorded.
True
COC is present.
True
COC is filled out in ink and legible.
True
COC is filled out with all pertinent information.
True
Is the Field Sampler's name present on COC?
True
There are no discrepancies between the containers received and the COC.
True
Samples are received within Holding Time (excluding tests with immediate
True
HTs)
Sample containers have legible labels.
True
Containers are not broken or leaking.
True
Sample collection date/times are provided.
True
Appropriate sample containers are used.
True
Sample bottles are completely filled.
True
Sample Preservation Verified.
True
There is sufficient vol. for all requested analyses, incl. any requested
True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is
True
<6mm (1/4").
Multiphasic samples are not present.
True
Samples do not require splitting or compositing.
True
Residual Chlorine Checked.
N/A
0
Eurofins Savannah
Page 15 of 16 7/25/2022

Accreditation/Certification Summary
Client: Alcoa Badin Works Job ID: 680-218341-1
Project/Site: 06010-1805-001/Outfalls SW & CDC
Laboratory: Eurofins Savannah
The accreditations/certifications listed below are applicable to this report.
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 269 12-31-22
Eurofins Savannah
Page 16 of 16 7/25/2022

urofins
Environment Testing
America
ANALYTICAL REPORT
Eurofins Lancaster Laboratories Environment Testing, LLC
2425 New Holland Pike
Lancaster, PA 17601
Tel: [phone]
Laboratory Job ID: 410-91283-1
Client Project/Site: Badin Business Park - Stormwater CN
For:
FTN Associates
3 Innwood Circle
Suite 220
Little Rock, Arkansas 72211
Attn: Melissa Vaught
)*bW,L-
Authorized for release by:
711912022 10:23:35 AM
Kelly Bauer, Project Manager
[phone]
[e-mail]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI
requirements for accredited parameters, exceptions are noted in this report. This
report may not be reproduced except in full, and with written approval from the
laboratory. For questions please contact the Project Manager at the e-mail address or
telephone number listed on this page.
This report has been electronically signed and authorized by the signatory. Electronic
signature is intended to be the legally binding equivalent of a traditionally handwritten
signature.
Results relate only to the items tested and the sample(s) as received by the laboratory.

Client: FTN Associates Laboratory Job ID: 410-91283-1
Project/Site: Badin Business Park - Stormwater CN
Analytical test results meet all requirements of the associated regulatory program (e.g., NELAC (TNI), DoD,
and ISO 17025) unless otherwise noted under the individual analysis. Data qualifiers are applied to note
exceptions. Noncompliant quality control (QC) is further explained in narrative comments.
• QC results that exceed the upper limits and are associated with non -detect samples are qualified but further
narration is not required since the bias is high and does not change a non -detect result. Further narration is
also not required with QC blank detection when the associated sample concentration is non -detect or more
than ten times the level in the blank.
Matrix QC may not be reported if insufficient sample or site -specific QC samples were not submitted. In these
situations, to demonstrate precision and accuracy at a batch level, a LCS/LCSD is performed, unless otherwise
specified in the method.
Surrogate and/or isotope dilution analyte recoveries (if applicable) which are outside of the QC window are
confirmed unless attributed to a dilution or otherwise noted in the narrative.
Regulated compliance samples (e.g. SDWA, NPDES) must comply with the associated agency
requirements/permits.
Measurement uncertainty values, as applicable, are available upon request.
Test results relate only to the sample tested. Clients should be aware that a critical step in a chemical or
microbiological analysis is the collection of the sample. Unless the sample analyzed is truly representative of
the bulk of material involved, the test results will be meaningless. If you have questions regarding the proper
techniques of collecting samples, please contact us. We cannot be held responsible for sample integrity,
however, unless sampling has been performed by a member of our staff. Times are local to the area of activity.
Parameters listed in the 40 CFR Part 136 Table II as "analyze immediately" and tested in the laboratory are not
performed within 15 minutes of collection.
This report shall not be reproduced except in full, without the written approval of the laboratory.
WARRANTY AND LIMITS OF LIABILITY - In accepting analytical work, we warrant the accuracy of test results
for the sample as submitted. The foregoing express warranty is exclusive and is given in lieu of all other
warranties, expressed or implied, except as otherwise agreed. We disclaim any other warranties, expressed or
implied, including a warranty of fitness for particular purpose and warranty of merchantability. In no event shall
Eurofins Lancaster Laboratories Environmental, LLC be liable for indirect, special, consequential, or incidental
damages including, but not limited to, damages for loss of profit or goodwill regardless of (A) the negligence
(either sole or concurrent) of Eurofins Lancaster Laboratories Environmental and (B) whether Eurofins
Lancaster Laboratories Environmental has been informed of the possibility of such damages. We accept no
legal responsibility for the purposes for which the client uses the test results. Except as otherwise agreed, no
purchase order or other order for work shall be accepted by Eurofins Lancaster Laboratories Environmental
which includes any conditions that vary from the Standard Terms and Conditions, and Eurofins Lancaster
Laboratories Environmental hereby objects to any conflicting terms contained in any acceptance or order
submitted by client.
Kelly Bauer
Project Manager
711912022 10:23:35 AM
Page 2 of 15 7/19/2022

Client: FTN Associates Laboratory Job ID: 410-91283-1
Project/Site: Badin Business Park - Stormwater CN
Table of Contents
Cover Page ..............................................
1
Table of Contents .........................................
3
Definitions/Glossary.......................................
4
Case Narrative ...........................................
5
Detection Summary ........................................
6
Client Sample Results ......................................
7
QC Sample Results ........................................
8
QC Association Summary ...................................
9
Lab Chronicle ............................................
10
Certification Summary ......................................
11
Method Summary .........................................
12
Sample Summary .........................................
13
of Custody ..........................................
14
IsChain
Receipt Checklists .........................................
15
IM
Eurofins Lancaster Laboratories Environment Testing LLC
Page 3 of 15 7/19/2022

Definitions/Glossary
Client: FTN Associates
Project/Site: Badin Business Park - Stormwater CN
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
p Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
1C Result is from the primary column on a dual -column method.
2C Result is from the confirmation column on a dual -column method.
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
oil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level'
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Job ID: 410-91283-1
12
13
14
Eurofins Lancaster Laboratories Environment Testing, LLC
Page 4 of 15 7/19/2022

Case Narrative
Client: FTN Associates
Project/Site: Badin Business Park - Stormwater CN
Job ID: 410-91283-1
Laboratory: Eurofins Lancaster Laboratories Environment Testing, LLC
Narrative
Job Narrative
410-91283-1
Receipt
The samples were received on 7/15/2022 6:53 PM. Unless otherwise noted below, the samples arrived in good condition, and, where
required, properly preserved and on ice. The temperature of the cooler at receipt time was 5.2°C
General Chemistry
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
Job ID: 410-91283-1
12
13
14
Eurofins Lancaster Laboratories Environment Testing LLC
Page 5 of 15 7/1972022

Detection Summary
Client: FTN Associates
Project/Site: Badin Business Park - Stormwater CN
Client Sample ID: Outfall 002 - SW
Job ID: 410-91283-1
Lab Sample ID: 410-91283-1
CNo Detections.
Client Sample ID: Outfall 004 - SW
CNo Detections.
Lab Sample ID: 410-91283-2
Client Sample ID: Outfall 017 - SW
[ No Detections.
Lab Sample ID: 410-91283-3
iIIII'
Client Sample ID: Outfall 018 - SW
Lab Sample ID: 410-91283-4
CNo Detections.
Client Sample ID: Outfall 022 - SW
Lab Sample ID: 410-91283-5
CNo Detections.
Client Sample ID: Outfall CDC - SW
Lab Sample ID: 410-91283-6
[ No Detections
This Detection Summary does not include radiochemical test results.
I
Eurofins Lancaster Laboratories Environment Testing, LLC
Page 6 of 15 7/19/2022

Client Sample Results
Client: FTN Associates
Job ID: 410-91283-1
Project/Site: Badin Business Park - Stormwater CN
Client Sample ID: Outfall 002 - SW
Lab Sample ID: 410-91283-1
Date Collected: 07/13/2218:57
Matrix: Water
Date Received: 07/15/22 18:53
General Chemistry
Analyte
Result Qualifier
RL
MDL Unit
D Prepared Analyzed Dil Fac
Cyanide, Total
<0.0060
0.0060
mg/L
07/19/22 09:54 1
Client Sample ID: Outfall 004 - SW
Lab Sample ID: 410-91283-2
Date Collected: 07113/22 18:04
Matrix: Water
Date Received: 07/15/22 18:53
General Chemistry
Analyte
Result Qualifier
RL
MDL Unit
D Prepared Analyzed Dil Fac
Cyanide, Total
<0.0060
0.0060
mg/L
07/19/22 09:56 1 FO
Client Sample ID: Outfall 017 - SW
Lab Sample ID: 410-91283-3
Date Collected: 07/13/22 17:55
Matrix: Water
Date Received: 07/15/22 18:53
General Chemistry
Analyte
Result Qualifier
RL
MDL Unit
D Prepared Analyzed Dil Fac
—
Cyanide, Total
<0.0060
0.0060
mg/L
07/19/22 09:58 1
Client Sample ID: Outfall 018 - SW
Lab Sample ID: 410-91283-4
Date Collected: 07/13/22 18:30
Matrix: Water
Date Received: 07/15/22 18:53
General Chemistry
Analyte Result Qualifier
Cyanide, Total <0.0060
Client Sample ID: Outfall 022 - SW
Date Collected: 07/13/22 18:13
Date Received: 07/15/22 18:53
General Chemistry
Analyte Result Qualifier
Cyanide, Total <0.0060
Client Sample ID: Outfall CDC - SW
Date Collected: 07/13/22 18:20
Date Received: 07/15/22 18:53
RL MDL Unit
0.0060 mg/L
RL MDL Unit
0.0060 mg/L
General Chemistry
Analyte Result Qualifier RL MDL Unit
Cyanide, Total <0.0060 0.0060 mg/L
D Prepared Analyzed Dil Fac
07/19/22 10:00 1
Lab Sample ID: 410-91283-5
Matrix: Water
D Prepared Analyzed Dil Fac
07/19/22 10:02 1
Lab Sample ID: 410-91283-6
Matrix: Water
D Prepared Analyzed Dil Fac
07/19/22 10:09 1
Eurofins Lancaster Laboratories Environment Testing, LLC
Page 7 of 15 7/19/2022

QC Sample Results
Client: FTN Associates
Project/Site: Badin Business Park - Stormwater CN
Method: D7511-12 -Total Cyanide
Lab Sample ID: MB 410-277057/18
Matrix: Water
Analysis Batch: 277057
Analyte
Cyanide, Total
Lab Sample ID: LCS 410-277057/16
Matrix: Water
Analysis Batch: 277057
Analyte
Cyanide, Total
Lab Sample ID: LCSD 410-277057/17
Matrix: Water
Analysis Batch: 277057
Analyte
Cyanide, Total
FLab Sample ID: 410-91283-5 MS
Matrix: Water
Analysis Batch: 277057
MB MB
Result Qualifier
<0.0060
Sample Sample
Analyte Result Qualifier
Cyanide, Total <0.0060
Lab Sample ID: 410-91283-5 DU
Matrix: Water
Analysis Batch: 277057
Sample Sample
Analyte Result Qualifier
Cyanide, Total <0.0060
Job ID: 410-91283-1
Client Sample ID: Method Blank
Prep Type: Total/NA
RL
MDL Unit
D Prepared Analyzed Dil Fac
0.0060
mg/L
07/19/22 08:30 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike
LCS
LCS
%Rec
Added
Result
Qualifier
Unit
D %Rec Limits
0.0500
0.0472
mg/L
94 84 - 116
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike
LCSD
LCSD
%Rec RPD
Added
Result
Qualifier
Unit
D %Rec Limits RPD Limit
0.0500
0.0478
mg/L
96 84 - 116 1 20
Client Sample ID: Outfall 022 - SW
Prep Type: Total/NA
Spike
MS
MS
%Rec
Added
Result
Qualifier
Unit
D %Rec Limits
0.0500
0.0526
mg/L
105 84 - 116
Client Sample ID: Outfall 022 - SW
Prep Type: Total/NA
DU
DU
RPD
Result
Qualifier
Unit
D RPD Limit
<0.0060
mg/L
NC 20
Eurofins Lancaster Laboratories Environment Testing, LLC
Page 8 of 15 7/19/2022

QC Association Summary
Client: FTN Associates
Project/Site: Badin Business Park - Stormwater CN
General Chemistry
Analysis Batch: 277057
Lab Sample ID
Client Sample ID
410-91283-1
Outfall 002 - SW
410-91283-2
Outfall 004 - SW
410-91283-3
Outfall 017 - SW
410-91283-4
Outfall 018 - SW
410-91283-5
Outfall 022 - SW
410-91283-6
Outfall CDC - SW
MB 410-277057/18
Method Blank
LCS 410-277057/16
Lab Control Sample
LCSD 410-277057/17
Lab Control Sample Dup
410-91283-5 MS
Outfall 022 - SW
410-91283-5 DU
Outfall 022 - SW
Prep Type
Matrix
Method
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Total/NA
Water
D7511-12
Job ID: 410-91283-1
Prep Batch
0
12
13
14
Eurofins Lancaster Laboratories Environment Testing, LLC
Page 9 of 15 7/19/2022

Lab Chronicle
Client: FTN Associates
Project/Site: Badin Business Park - Stormwater CN
Client Sample ID: Outfall 002 - SW
Date Collected: 07/13/2218:57
Date Received: 07/15/22 18:53
Batch
Prep Type Type
Batch
Method
Total/NA Analysis
D7511-12
Client Sample ID: Outfall 004 - SW
Date Collected: 07/13/22 18:04
Date Received: 07/15/22 18:53
rBatch Batch
Prep Type Type Method
Total/NA Analysis D7511-12
Client Sample ID: Outfall 017 - SW
Date Collected: 07/13/22 17:55
Date Received: 07/15/22 18:53
Job ID: 410-91283-1
Lab Sample ID: 410-91283-1
Matrix: Water
Dilution
Batch
Prepared
Run Factor
Number
or Analyzed
Analyst Lab
1
277057
07/19/22 09:54
CBM8 ELLE
Lab Sample ID: 410-91283-2
Matrix: Water
Dilution Batch Prepared
Run Factor Number or Analyzed Analyst Lab
1 277057 07/19/22 09:56 CBM8 ELLE
Batch Batch
Prep Type Type Method Run
Total/NA Analysis D7511-12
Client Sample ID: Outfall 018 - SW
Date Collected: 07/13/22 18:30
Date Received: 07/15/22 18:53
Batch
Batch
Prep Type Type
Method
Total/NA Analysis
D7511-12
Client Sample ID: Outfall 022 - SW
Date Collected: 07/13/22 18:13
Date Received: 07/15/22 18:53
Batch
Batch
Prep Type Type
Method
Total/NA Analysis
D7511-12
Client Sample ID: Outfall CDC - SW
Date Collected: 07/13/22 18:20
Date Received: 07/15/22 18:53
Run
Lab Sample ID: 410-91283-3
Matrix: Water
Dilution Batch Prepared
Factor Number or Analyzed Analyst Lab Is
1 277057 07/19/22 09:58 CBM8 ELLE
Lab Sample ID: 410-91283-4
Matrix: Water
Dilution Batch Prepared
Factor Number or Analyzed Analyst Lab
1 277057 07/19/2210:00 CBM8 ELLE
Lab Sample ID: 410-91283-5
Matrix: Water
Dilution Batch Prepared
Run Factor Number or Analyzed Analyst Lab
1 277057 07/19/2210:02 CBM8 ELLE
Lab Sample ID: 410-91283-6
Matrix: Water
Batch Batch Dilution Batch Prepared
Prep Type Type Method Run Factor Number or Analyzed Analyst Lab
Total/NA Analysis D7511-12 1 277057 07/19/2210:09 CBM8 ELLE
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Environment Testing, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
Eurofins Lancaster Laboratories Environment Testing, LLC
Page 10 of 15 7/19/2022

Accreditation/Certification Summary
Client: FTN Associates Job ID: 410-91283-1
Project/Site: Badin Business Park - Stormwater CN
Laboratory: Eurofins Lancaster Laboratories Environment Testing, LLC
Unless otherwise noted, all analytes for this laboratory were covered under each accreditation/certification below.
Authority Program Identification Number Expiration Date
North Carolina (DW) State 42705 07-31-23
The following analytes are included in this report, but the laboratory is not certified by the governing authority. This list may include analytes for which
the agency does not offer certification.
Analysis Method Prep Method Matrix Analyte
D7511-12 Water Cyanide, Total
North Carolina (WW/SW) State 521 12-31-22
in
1
13
14
Eurofins Lancaster Laboratories Environment Testing, LLC
Page 11 of 15 7/19/2022

Method Summary
a Ji Dte10- (9 221 864 2
PH j1 84SM :d33dtDEBu2kD1 22EP3rkdC4 rmw34 rGB -
Method Method Description Protocol
t 75FFNFs 01 BID UDWI 9SOy
Protocol References:
9SOy E6E9SOy eDl rD34D D3J
Laboratory References:
ELLEE6EEurl 4Md_3D8324 rd-3i I r34 rb 2d=Df hl DMI DII 24fiUgLLags s5e I we I JIIDdEPlkl gL3DB324 rgP9EF7HfFgOEL07F7)F51 ftcTT
G i et :e FTWsocNF
Laboratory
ELLE
11
12
13
14
Eurl 4D2d_M8324 rd_3i I r34 rM 2£Df 131 Dnl Dill 24fl✓*La
Page 12 of 15 7/19/2022

Sample Summary
Client: FTN Associates
Project/Site: Badin Business Park - Stormwater CN
Lab Sample ID
Client Sample ID
Matrix
Collected
Received
410-91283-1
Outfall 002 - SW
Water
07/13/22 18:57
07/15/22 18:53
410-91283-2
Outfall 004 - SW
Water
07/13/22 18:04
07/15/22 18:53
410-91283-3
Outfall 017 - SW
Water
07/13/22 17:55
07/15/22 18:53
410-91283-4
Outfall 018 - SW
Water
07/13/22 18:30
07/15/22 18:53
410-91283-5
Outfall 022 - SW
Water
07/13/22 18:13
07/15/22 18:53
410-91283-6
Outfall CDC - SW
Water
07/13/22 18:20
07/15/22 18:53
Job ID: 410-91283-1
12
13
14
Eurofins Lancaster Laboratories Environment Testing LLC
Page 13 of 15 7/1972022

Mtn
410-91283 Chain of Custody
Date:
Project Name
JProject No.
Project Manager (Print)
—1 `Z�
1B.din Business Park - Stormwater CN
06010.1605-001
Jon Wilson
Laboratory Name:
Submitted by:
Parameters (Metltod Number)
Euroflns Lancaster Laboratories
Jon Wilson
Lab
Badin Business Park LLC
293 Highway 740
Badin, North Carolina 28009
704-662-6138
°
Other.
Sample Identification
all 002 - SW
all 004 - SW
all 017 - SW
all 018 - SW
1022 - SW
ICDC - SW
C)
1 JC.1 >^,1ISD-1
SAMPLE DESCRIPTION
Matrix*
Date Time
W S
-13-Z� 157 x
7-13-Z' l`yo� x
x
-7-1)-?7 183p x
-7 , 3 -2 1 t 3 x
7-13 --LZ t $z o x
Son I -VAC',
■ Wwer s - Soil
o - other
Date Time
•14-IL I 19CU
Date Time
Page 14 of 15
By �boratory (Signature)
7-15

Login Sample Receipt Checklist
Client: FTN Associates Job Number: 410-91283-1
Login Number: 91283
List Number: 1
Creator: Jeremiah, Cory T
Question
List Source: Eurofins Lancaster Laboratories Environment Testing, LLC
Answer Comment
The cooler's custody seal is intact.
True
The cooler or samples do not appear to have been compromised or
True
tampered with.
Samples were received on ice.
True
Cooler Temperature is acceptable (</=6C, not frozen).
True
Cooler Temperature is recorded.
True
WV: Container Temperature is acceptable (</=6C, not frozen).
N/A
WV: Container Temperature is recorded.
N/A
COC is present.
True
COC is filled out in ink and legible.
True
COC is filled out with all pertinent information.
True
There are no discrepancies between the containers received and the COC.
True
Sample containers have legible labels.
True
Containers are not broken or leaking.
True
Sample collection date/times are provided.
True
Appropriate sample containers are used.
True
Sample bottles are completely filled.
True
There is sufficient vol. for all requested analyses.
True
Is the Field Sampler's name present on COC?
True
Sample custody seals are intact.
N/A
VOA sample vials do not have headspace >6mm in diameter (none, if from
N/A
aMY
14
Eurofins Lancaster Laboratories Environment Testing, LLC
Page 15 of 15 7/19/2022

%%eurofins
Environment Testing
� ANALYTICAL REPORT
0
0
0
PREPARED FOR m
Attn: Randall Kiser
Alcoa Badin Works
293 Highway 740
Badin, North Carolina 28009
Generated 1 /10/2023 11:00:52 AM Revision 1
JOB DESCRIPTION
...
JOB NUMBER
680-227879-1

The test results in this report meet NELAP requirements for parameters for which accreditation is required or available. Any
exceptions to the NELAP requirements are noted. Results pertain only to samples listed in this report. This report may not be
reproduced, except in full, without the written approval of the laboratory. Questions should be directed to the person who
signed this report.
The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the
methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written
approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project
Manager.
- Generated �A� 74zz1/10/2023 11:00:52 AM
Revision 1
Authorized for release by
Sheila Hoffman, Project Manager II
Sheila. Hoffman (a)et.eu rofinsus.com
[phone]
Eurofins Savannah is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies
Page 2 of 37 1/10/2023 (Rev. 1)

Sample Summary
Client: Alcoa Badin Works
Project/Site: BBP
Job ID: 680-227879-1
Lab Sample ID Client Sample ID Matrix Collected Received
680-227879-1 Outfall CDC Water 12/15/22 12:03 12/16/22 08:15
680-227879-2 Trip Blank Water 12/15/22 12:00 12/16/22 08:15
Page 3 of 37

Method Summary
Client: Alcoa Badin Works
Project/Site: BBP
Method
Method Description
624.1
Volatile Organic Compounds (GC/MS)
625.1
Semivolatile Organic Compounds (GC/MS)
608.3
Organochlorine Pesticides/PCBs in Water
615
Herbicides (GC)
200.8-1994 R5.4
Metals (ICP/MS)
245.1
Mercury (CVAA)
1664B
HEM and SGT-HEM
2540 D-2011
Total Suspended Solids (Dried at 103-105°C)
420.1-1978
Phenolics, Total Recoverable
4500 NH3 G-2011
Ammonia
5210B-2011
BOD, 5-Day
7196A
Chromium, Hexavalent
D7511-12
Total Cyanide
1664B
HEM and SGT-HEM (Aqueous)
200.8-1994 R5.4
Preparation, Total Recoverable Metals
245.1
Preparation, Mercury
4500 NH3 B-2011
Ammonia, Distillation
608
Liquid -Liquid Extraction (Separatory Funnel)
615
Liquid -Liquid Extraction
625
Liquid -Liquid Extraction
Distill/Phenol
Distillation, Phenolics
Protocol References:
1664B = EPA-821-98-002
Job ID: 680-227879-1
Protocol
Laboratory
40CFR136A
EET SAV
40CFR136A
EET SAV
40CFR136A
EET SAV
EPA-01
EET SAV
EPA
EET SAV
EPA
EET SAV
1664E
EET SAV
SM
EET SAV
MCAWW
EET SAV
SM
EET SAV
SM
EET SAV
SW846
EET SAV
ASTM
ELLE
1664E
EET SAV
EPA
EET SAV
EPA
EET SAV
SM
EET SAV
40CFR136A
EET SAV
EPA-01
EET SAV
40CFR136A
EET SAV
None
EET SAV
40CFR136A = "Methods for Organic Chemical Analysis of Municipal Industrial Wastewater', 40CFR, Part 136, Appendix A, October 26, 1984 and
subsequent revisions.
ASTM = ASTM International
EPA = US Environmental Protection Agency
EPA-01 = "Methods For The Determination Of Nonconventional Pesticides In Municipal And Industrial Wastewater", EPA/821/R/92/002, April 1992.
MCAWW = "Methods For Chemical Analysis Of Water And Wastes", EPA-600/4-79-020, March 1983 And Subsequent Revisions.
None = None
SM = "Standard Methods For The Examination Of Water And Wastewater"
SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates.
Laboratory References:
EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
ELLE = Eurofins Lancaster Laboratories Environment Testing, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
Eurofins Savannah
Page 4 of 37 1/10/2023 (Rev. 1)

Definitions/Glossary
Client: Alcoa Badin Works
Project/Site: BBP
Qualifiers
GC/MS VOA
Qualifier Qualifier Description
*+ LCS and/or LCSD is outside acceptance limits, high biased.
H Sample was prepped or analyzed beyond the specified holding time
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
GC/MS Semi VOA
Qualifier Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
S1- Surrogate recovery exceeds control limits, low biased.
GC Semi VOA
Qualifier Qualifier Description
`+ LCS and/or LCSD is outside acceptance limits, high biased.
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
p The %RPD between the primary and confirmation column/detector is >40%. The lower value has been reported.
Metals
Qualifier Qualifier Description
J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value.
General Chemistry
Qualifier Qualifier Description
b Result Detected in the Unseeded Control blank (USB).
H Sample was prepped or analyzed beyond the specified holding time
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
tt Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level'
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
VIOL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
Job ID: 680-227879-1
Eurofins Savannah
Page 5 of 37 1/10/2023 (Rev. 1)

Definitions/Glossary
Client: Alcoa Badin Works
Project/Site: BBP
Glossary (Continued)
Abbreviation These commonly used abbreviations may or may not be present in this report.
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Job ID: 680-227879-1
Eurofins Savannah
Page 6 of 37 1/10/2023 (Rev. 1)

Case Narrative
Client: Alcoa Badin Works
Project/Site: BBP
Job ID: 680-227879-1
Laboratory: Eurofins Savannah
Narrative
Job Narrative
680-227879-1
Revision
The report has been revised to report results to the MDL.
Job ID: 680-227879-1
Receipt
The samples were received on 12/16/2022 8:15 AM. Unless otherwise noted below, the samples arrived in good condition, and, where
required, properly preserved and on ice. The temperature of the cooler at receipt time was 3.6°C
GC/MS VOA
Method 624.1_PREC: The laboratory control sample (LCS) and / or laboratory control sample duplicate (LCSD) for analytical batch
680-755835 recovered outside control limits for the following analytes: Chloroethane. These analytes were biased high in the LCS and
were not detected in the associated samples; therefore, the data have been reported.
Method 624.1_PREC: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate (MS/MSD) associated
with analytical batch 680-755835.
Method 624.1_PREC: The following sample(s) was received with less than 2 days remaining on the holding time or less than one shift (8
hours) remaining on a test with a holding time of 48 hours or less. As such, the laboratory had insufficient time remaining to perform the
analysis within holding time: Outfall CDC (680-227879-1) and Trip Blank (680-227879-2).
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
GC/MS Semi VOA
Method 625.1_PREC: Six surrogates are used for this analysis. The laboratory's SOP allows one acid and one base of these surrogates
to be outside acceptance criteria without performing re-extraction/re-analysis. The following sample contained an allowable number of
surrogate compounds outside limits: Outfall CDC (680-227879-1). These results have been reported and qualified.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
Herbicides
Method 615: The laboratory control sample (LCS) for preparation batch 680-756560 and analytical batch 680-758203 recovered outside
control limits for the following analytes: MCPP. These analytes were biased high in the LCS and were not detected in the associated
samples; therefore, the data have been reported.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
Pesticides/PCBs
Method 608.3_PREC: The closing continuing calibration verification (CCV) standard associated with batch 680-757158 failed to meet
acceptance limits. Sample matrix is adversely affecting the instrument and causing the failures.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
Metals
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
General Chemistry
Method 5210B: The method blank result associated with batch 680-755653 was higher than the method -required limit of 0.2 mg/L.
Method 7196A: The following samples were received outside of holding time: Outfall CDC (680-227879-1) and (680-228508-A-2).
Eurofins Savannah
Page 7 of 37 1/10/2023 (Rev. 1)

Case Narrative
Client: Alcoa Badin Works
Project/Site: BBP
Job ID: 680-227879-1 (Continued)
Job ID: 680-227879-1
Laboratory: Eurofins Savannah (Continued) aMethod D751112: 11 injections in a bracket. All adjacent QC are passing.Outfall CDC (680-227879-1), (LCS 410-330378/15), (LCSD
410-330378/16), (MB 410-330378/17), (410-110047-A-1), (410-110047-A-1 DU), (410-110047-A-1 MS) and (410-110047-A-1 MSD)
Method SM4500NH3_G: The reference method requires samples to be preserved to a pH of <pH_value>. The following sample was
received with insufficient preservation at a pH of <pH_Value>: Outfall CDC (680-227879-1). The sample(s) was preserved to the
appropriate pH in the laboratory.
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
Eurofins Savannah
Page 8 of 37 1/10/2023 (Rev. 1)

Client Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Client Sample ID: Outfall CDC
Lab Sample
ID: 680-227879-1
Date Collected: 12/15/22 12:03
Matrix:
Water
Date Received: 12/16/22 08:15
Method: 40CFR136A 624.1 - Volatile Organic Compounds (GC/MS)
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared
Analyzed
Dil Fac
Acrolein
<15 H
50
15
ug/L
12/19/22 20:37
1
Acrylonitrile
<5.5 H
50
5.5
ug/L
12/19/22 20:37
1
Benzene
<0.27
2.0
0.27
ug/L
12/19/22 20:37
1
Dichlorobromomethane
<0.25
10
0.25
ug/L
12/19/22 20:37
1
Bromoform
<0.59
10
0.59
ug/L
12/19/22 20:37
1
Bromomethane
<3.7
10
3.7
ug/L
12/19/22 20:37
1
Carbon tetrachloride
<0.30
2.0
0.30
ug/L
12/19/22 20:37
1
Chlorobenzene
<0.15
10
0.15
ug/L
12/19/22 20:37
1
Chloroethane
<4.6 «+
5.0
4.6
ug/L
12/19/22 20:37
1
2-Chloroethyl vinyl ether
<0.59 H
10
0.59
ug/L
12/19/22 20:37
1
Chloroform
<0.27
2.0
0.27
ug/L
12/19/22 20:37
1
Chloromethane
0.87 J
10
0.54
ug/L
12/19/22 20:37
1
Chlorodibromomethane
<0.39
10
0.39
ug/L
12/19/22 20:37
1
1,2-Dichlorobenzene
<0.31
1.0
0.31
ug/L
12/19/22 20:37
1
1,3-Dichlorobenzene
<0.31
1.0
0.31
ug/L
12/19/22 20:37
1
1,4-Dichlorobenzene
<0.31
1.0
0.31
ug/L
12/19/22 20:37
1
1,1-Dichloroethane
<0.33
2.0
0.33
ug/L
12/19/22 20:37
1
1,2-Dichloroethane
<0.25
2.0
0.25
ug/L
12/19/22 20:37
1
1,1-Dichloroethene
<0.33
2.0
0.33
ug/L
12/19/22 20:37
1
trans-1,2-Dichloroethene
<0.34
2.0
0.34
ug/L
12/19/22 20:37
1
1,2-Dichloropropane
<0.22
2.0
0.22
ug/L
12/19/22 20:37
1
cis-1,3-Dichloropropene
<0.26
2.0
0.26
ug/L
12/19/22 20:37
1
trans-1,3-Dichloropropene
<0.23
2.0
0.23
ug/L
12/19/22 20:37
1
Ethylbenzene
<0.20
2.0
0.20
ug/L
12/19/22 20:37
1
Methylene Chloride
<3.2
10
3.2
ug/L
12/19/22 20:37
1
1,1,2,2-Tetrachloroethane
<0.40
2.0
0.40
ug/L
12/19/22 20:37
1
Tetrachloroethene
<0.35
2.0
0.35
ug/L
12/19/22 20:37
1
Toluene
<0.25
2.0
0.25
ug/L
12/19/22 20:37
1
1,1,1-Trichloroethane
<0.21
2.0
0.21
ug/L
12/19/22 20:37
1
1,1,2-Trichloroethane
<0.32
2.0
0.32
ug/L
12/19/22 20:37
1
Trichloroethene
<0.20
2.0
0.20
ug/L
12/19/22 20:37
1
Trichlorofluoromethane
<0.33
1.0
0.33
ug/L
12/19/22 20:37
1
Vinyl chloride
<0.40
10
0.40
ug/L
12/19/22 20:37
1
Dichlorodifluoromethane
<0.36
1.0
0.36
ug/L
12/19/22 20:37
1
Surrogate %Recovery Qualifier
Limits
Prepared
Analyzed
Dil Fac
1,2-Dichloroethane-d4 (Surr)
97
60- 140
12119122 20:37
1
Toluene-d8 (Surr)
109
60 - 140
12119122 20:37
1
4-Bromofluorobenzene (Surr)
92
60 - 140
12119122 20:37
1
Dibromofluoromethane (Surr)
109
60 - 140
12119122 20:37
1
Method: 40CFR136A 625.1 - Semivolatile Organic Compounds
(GC/MS)
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared
Analyzed
Dil Fac
1,2,4-Trichlorobenzene
<0.54
9.6
0.54
ug/L
12/20/2215:35
12/28/2218:25
1
1,2-Diphenylhydrazine
<0.83
9.6
0.83
ug/L
12/20/2215:35
12/28/2218:25
1
1,4-Dioxane
<12
24
12
ug/L
12/20/2215:35
12/28/2218:25
1
2,2'-oxybis[1-chloropropane]
<0.82
9.6
0.82
ug/L
12/20/2215:35
12/28/2218:25
1
2,4,6-Trichlorophenol
<0.79
9.6
0.79
ug/L
12/20/2215:35
12/28/2218:25
1
2,4-Dichlorophenol
<1.1
9.6
1.1
ug/L
12/20/2215:35
12/28/2218:25
1
2,4-Dimethylphenol
<3.8
9.6
3.8
ug/L
12/20/2215:35
12/28/2218:25
1
Eurofins Savannah
Page 9 of 37 1/10/2023 (Rev. 1)

Client Sample Results
Client: Alcoa Badin Works
Project/Site: BBP
Job ID: 680-227879-1
Client Sample ID: Outfall CDC Lab Sample ID: 680-227879-1
Date Collected: 12/15/22 12:03 Matrix: Water
Date Received: 12/16/22 08:15
Method: 40CFR136A 625.1 - Semivolatile Organic Compounds (GC/MS) (Continued)
Analyte
Result Qualifier
RL
MDL
Unit D
2,4-Dinitrophenol
<9.6
48
9.6
ug/L
2,4-Dinitrotoluene
<1.2
9.6
1.2
ug/L
2,6-Dinitrotoluene
<1.1
9.6
1.1
ug/L
2-Chloronaphthalene
<0.75
9.6
0.75
ug/L
2-Chlorophenol
<0.87
9.6
0.87
ug/L
2-Methylphenol
<0.88
9.6
0.88
ug/L
2-Nitrophenol
<0.71
9.6
0.71
ug/L
3 & 4 Methylphenol
<1.3
9.6
1.3
ug/L
3,3'-Dichlorobenzidine
<29
58
29
ug/L
4,6-Dinitro-2-methyl phenol
<4.8
48
4.8
ug/L
4-Bromophenyl phenyl ether
<0.77
9.6
0.77
ug/L
4-Chloro-3-methylphenol
<1.1
9.6
1.1
ug/L
4-Chlorophenyl phenyl ether
<0.78
9.6
0.78
ug/L
4-Nitrophenol
<9.6
48
9.6
ug/L
Acenaphthene
<0.72
9.6
0.72
ug/L
Acenaphthylene
<0.77
9.6
0.77
ug/L
Anthracene
<0.70
9.6
0.70
ug/L
Benzidine
<40
77
40
ug/L
Benzo[a]anthracene
<0.90
9.6
0.90
ug/L
Benzo[a]pyrene
<0.71
9.6
0.71
ug/L
Benzo[k]fluoranthene
<2.4
9.6
2.4
ug/L
Benzo[g,h,i]perylene
<0.86
9.6
0.86
ug/L
Benzo[k]fluoranthene
<0.87
9.6
0.87
ug/L
1,2-Dichlorobenzene
<0.54
9.6
0.54
ug/L
Bis(2-chloroethoxy)methane
<1.1
9.6
1.1
ug/L
Bis(2-chloroethyl)ether
<1.1
9.6
1.1
ug/L
1,3-Dichlorobenzene
<0.63
9.6
0.63
ug/L
Bis(2-ethylhexyl) phthalate
<1.5
9.6
1.5
ug/L
Butyl benzyl phthalate
<1.2
9.6
1.2
ug/L
1,4-Dichlorobenzene
<0.56
9.6
0.56
ug/L
Carbazole
<0.64
9.6
0.64
ug/L
Chrysene
<0.50
9.6
0.50
ug/L
Dibenz(a,h)anthracene
<0.73
9.6
0.73
ug/L
Diethyl phthalate
<0.83
9.6
0.83
ug/L
Dimethyl phthalate
<0.93
9.6
0.93
ug/L
Di-n-butyl phthalate
<0.85
9.6
0.85
ug/L
Di-n-octyl phthalate
<1.3
9.6
1.3
ug/L
Fluoranthene
<0.68
9.6
0.68
ug/L
Fluorene
<0.89
9.6
0.89
ug/L
Hexachlorobenzene
<0.78
9.6
0.78
ug/L
Hexachlorobutadiene
<0.60
9.6
0.60
ug/L
Hexachlorocyclopentadiene
<9.6
19
9.6
ug/L
Hexachloroethane
<0.78
9.6
0.78
ug/L
Indeno[1,2,3-cd]pyrene
<1.1
9.6
1.1
ug/L
Isophorone
<0.87
9.6
0.87
ug/L
Naphthalene
<0.67
9.6
0.67
ug/L
Nitrobenzene
<0.56
9.6
0.56
ug/L
N-Nitrosodimethylamine
<9.6
19
9.6
ug/L
N-Nitrosodi-n-propylamine
<0.71
9.6
0.71
ug/L
Prepared
Analyzed
Dil Fac
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
12/20/22 15:35
12/28/22 18:25
1
Eurofins Savannah
Page 10 of 37 1/10/2023 (Rev. 1)

Client Sample Results
Client: Alcoa Badin Works
Project/Site: BBP
Client Sample ID: Outfall CDC
Date Collected: 12/15/22 12:03
Date Received: 12/16/22 08:15
Job ID: 680-227879-1
Lab Sample ID: 680-227879-1
Matrix: Water
Method: 40CFR136A 625.1 - Semivolatile Organic Compounds
(GC/MS) (Continued)
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared
Analyzed
Dil Fac
N-Nitrosodiphenylamine
<0.88
9.6
0.88
ug/L
12/2012215:35
12/28/22 18:25
1
Pentachlorophenol
<1.7
48
1.7
ug/L
12/20/2215:35
12/28/22 18:25
1
Phenanthrene
<0.78
9.6
0.78
ug/L
12/20/2215:35
12/28/22 18:25
1
Phenol
<1.1
9.6
1.1
ug/L
12/20/2215:35
12/28/22 18:25
1
Phthalates, Total
<0.83
9.6
0.83
ug/L
12/20/22 15:35
12/28/22 18:25
1
Pyrene
<0.62
9.6
0.62
ug/L
12/20/2215:35
12/28/22 18:25
1
Surrogate
%Recovery Qualifier
Limits
Prepared
Analyzed
Dil Fac
2,4,6-Tribromophenol
78
53- 111
12/20/22 15:35
12/28/22 18:25
1
2-Fluorobiphenyl
63
44 - 98
12120122 15:35
12/28/22 18:25
1
2-Fluorophenol
47
31- 90
12120122 15:35
12/28/22 18:25
1
Nitrobenzene-d5
60
15 - 314
12120122 15:35
12/28/22 18:25
1
Phenol-d5
52
8 - 424
12120122 15:35
12/28/22 18:25
1
Terphenyl-d14
32 S1-
51- 113
12120122 15:35
12/28/22 18:25
1
Method: 40CFR136A 608.3 - Organochlorine Pesticides/PCBs
in Water
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared
Analyzed
Dil Fac
Aldrin
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
alpha-BHC
<0.00096
0.048
0.00096
ug/L
12/22/22 21:19
12/28/22 19:52
1
beta-BHC
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
gamma-BHC (Lindane)
<0.00096
0.048
0.00096
ug/L
12/22/22 21:19
12/28/22 19:52
1
delta-BHC
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
Chlordane (technical)
<0.15
0.48
0.15
ug/L
12/22/22 21:19
12/28/22 19:52
1
4,4'-DDT
<0.00096
0.048
0.00096
ug/L
12/22/22 21:19
12/28/22 19:52
1
4,4'-DDE
<0.00096
0.048
0.00096
ug/L
12/22/22 21:19
12/28/22 19:52
1
4,4'-DDD
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
Dieldrin
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
Endosulfan 1
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
Endosulfan 11
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
Endosulfan sulfate
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
Endrin
<0.00096
0.048
0.00096
ug/L
12/22/22 21:19
12/28/22 19:52
1
Endrin aldehyde
<0.0038
0.048
0.0038
ug/L
12/22/22 21:19
12/28/22 19:52
1
Heptachlor
<0.00096
0.048
0.00096
ug/L
12/22/22 21:19
12/28/22 19:52
1
Heptachlor epoxide
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
PCB-1242
<0.33
0.96
0.33
ug/L
12/22/22 21:19
12/28/22 19:52
1
PCB-1254
<0.33
0.96
0.33
ug/L
12/22/22 21:19
12/28/22 19:52
1
PCB-1221
<0.33
0.96
0.33
ug/L
12/22/22 21:19
12/28/22 19:52
1
PCB-1232
<0.33
0.96
0.33
ug/L
12/22/22 21:19
12/28/22 19:52
1
PCB-1248
<0.33
0.96
0.33
ug/L
12/22/22 21:19
12/28/22 19:52
1
PCB-1260
<0.33
0.96
0.33
ug/L
12/22/22 21:19
12/28/22 19:52
1
Toxaphene
<0.30
4.8
0.30
ug/L
12/22/22 21:19
12/28/22 19:52
1
Methoxychlor
<0.0019
0.048
0.0019
ug/L
12/22/22 21:19
12/28/22 19:52
1
PCB-1016
<0.31
0.96
0.31
ug/L
12/22/22 21:19
12/28/22 19:52
1
Surrogate
%Recovery Qualifier
Limits
Prepared
Analyzed
Dil Fac
Tetrachloro-m-xylene
70
26 - 140
12122122 21:19
12/28/22 19:52
1
DCB Decachlorobiphenyl
82
10 - 131
12122122 21:19
12/28/22 19:52
1
Eurofins Savannah
Page 11 of 37 1/10/2023 (Rev. 1)

Client Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Client Sample ID: Outfall CDC
Lab Sample
ID: 680-227879-1
Date Collected: 12/15/22 12:03
Matrix:
Water
Date Received: 12/16/22 08:15
Method: EPA-01 615 - Herbicides (GC)
Analyte
Result
Qualifier
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
2,4-13
0.57
J p
1.0
0.17
ug/L
12/22/22 14:08
01/06/23 21:22
1
2,4-DB
<0.60
2.5
0.60
ug/L
12/22/22 14:08
01/06/23 21:22
1
2,4,5-T
<0.13
0.81
0.13
ug/L
12/22/22 14:08
01/06/23 21:22
1
Silvex (2,4,5-TP)
<0.091
0.81
0.091
ug/L
12/22/22 14:08
01/06/23 21:22
1
Dalapon
<0.94
5.2
0.94
ug/L
12/22/22 14:08
01/06/23 21:22
1
Dicamba
1.1
0.48
0.044
ug/L
12/22/22 14:08
01/06/23 21:22
1
Dichlorprop
<0.11
0.81
0.11
ug/L
12/22/22 14:08
01/06/23 21:22
1
Dinoseb
<0.095
0.48
0.095
ug/L
12/22/22 14:08
01/06/23 21:22
1
MCPA
<86
570
86
ug/L
12/22/22 14:08
01/06/23 21:22
1
MCPP
<30
*+
190
30
ug/L
12/22/22 14:08
01/06/23 21:22
1
Surrogate
%Recovery
Qualifier
Limits
Prepared
Analyzed
Dil Fac
2,4-Dichlorophenylacetic acid
89
p
26- 137
12/22/22 14:08
01106123 21:22
1
Method: EPA 200.8-1994 R5.4 - Metals (ICP/MS)
- Total Recoverable
Analyte
Result
Qualifier
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
Copper
5.4
5.0
0.90
ug/L
12/19/22 14:04
12/21/22 06:12
1
Cadmium
<0.078
0.70
0.078
ug/L
12/19/22 14:04
12/21/22 06:12
1
Silver
<0.39
5.0
0.39
ug/L
12/19/22 14:04
12/21/22 06:12
1
Arsenic
<0.86
5.0
0.86
ug/L
12/19/22 14:04
12/21/22 06:12
1
Beryllium
<0.20
1.0
0.20
ug/L
12/19/22 14:04
12/21/22 06:12
1
Chromium
<2.6
5.0
2.6
ug/L
12/19/22 14:04
12/21/22 06:12
1
Nickel
4.1
J
5.0
1.8
ug/L
12/19/22 14:04
12/21/22 06:12
1
Lead
0.87
J
1.0
0.34
ug/L
12/19/22 14:04
12/21/22 06:12
1
Antimony
<0.52
5.0
0.52
ug/L
12/19/22 14:04
12/21/22 06:12
1
Selenium
<1.2
5.0
1.2
ug/L
12/19/22 14:04
12/21/22 06:12
1
Thallium
<0.26
1.0
0.26
ug/L
12/19/22 14:04
12/21/22 06:12
1
Zinc
<10
10
10
ug/L
12/19/22 14:04
12/21/22 06:12
1
Method: EPA 245.1 - Mercury (CVAA)
Analyte
Result
Qualifier
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
Hg
<0.080
0.50
0.080
ug/L
12/20/22 08:20
12/21/22 10:00
1
General Chemistry
Analyte
Result
Qualifier
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
HEM (Oil & Grease) (1664B)
<0.66
2.4
0.66
mg/L
01/04/23 13:29
01/04/23 21:06
1
Phenolics, Total Recoverable
<0.025
0.050
0.025
mg/L
12/28/22 11:16
12/28/22 15:23
1
(MCAWW 420.1-1978)
Ammonia (SM 4500 NH3 G-2011)
<0.10
0.25
0.10
mg/L
12/21/22 13:01
12/21/22 15:09
1
Chromium (hexavalent) (SW846
<3.0
H
10
3.0
ug/L
12/31/22 13:24
1
7196A)
Cyanide, Total (ASTM D7511-12)
<0.0020
0.0060
0.0020
mg/L
12/27/22 08:44
1
Analyte
Result
Qualifier
RL
RL
Unit
D
Prepared
Analyzed
Dil Fac
Total Suspended Solids (SM 2540
21
2.5
2.5
mg/L
12/22/22 15:39
1
D-2011)
Biochemical Oxygen Demand (SM
8.5
H b
2.0
2.0
mg/L
12/17/22 16:33
1
5210B-2011)
Eurofins Savannah
Page 12 of 37 1/10/2023 (Rev. 1)

Client Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Client Sample ID: Trip Blank
Lab Sample ID: 680-227879-2
Date Collected: 12/15/22 12:00
Matrix:
Water
Date Received: 12/16/22 08:15
Method: 40CFR136A 624.1 - Volatile Organic Compounds (GC/MS)
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared Analyzed
Dil Fac
Acrolein
<15 H
50
15
ug/L
12/19/22 14:16
1
Acrylonitrile
<5.5 H
50
5.5
ug/L
12/19/22 14:16
1
Benzene
<0.27
2.0
0.27
ug/L
12/19/22 14:16
1
Dichlorobromomethane
<0.25
10
0.25
ug/L
12/19/22 14:16
1
Bromoform
<0.59
10
0.59
ug/L
12/19/22 14:16
1
Bromomethane
<3.7
10
3.7
ug/L
12/19/22 14:16
1
Carbon tetrachloride
<0.30
2.0
0.30
ug/L
12/19/22 14:16
1
Chlorobenzene
<0.15
10
0.15
ug/L
12/19/22 14:16
1
Chloroethane
<4.6 *+
5.0
4.6
ug/L
12/19/22 14:16
1
2-Chloroethyl vinyl ether
<0.59 H
10
0.59
ug/L
12/19/22 14:16
1
Chloroform
<0.27
2.0
0.27
ug/L
12/19/22 14:16
1
Chloromethane
<0.54
10
0.54
ug/L
12/19/22 14:16
1
Chlorodibromomethane
<0.39
10
0.39
ug/L
12/19/22 14:16
1
1,2-Dichlorobenzene
<0.31
1.0
0.31
ug/L
12/19/22 14:16
1
1,3-Dichlorobenzene
<0.31
1.0
0.31
ug/L
12/19/22 14:16
1
1,4-Dichlorobenzene
<0.31
1.0
0.31
ug/L
12/19/22 14:16
1
1,1-Dichloroethane
<0.33
2.0
0.33
ug/L
12/19/22 14:16
1
1,2-Dichloroethane
<0.25
2.0
0.25
ug/L
12/19/22 14:16
1
1,1-Dichloroethene
<0.33
2.0
0.33
ug/L
12/19/22 14:16
1
trans-1,2-Dichloroethene
<0.34
2.0
0.34
ug/L
12/19/22 14:16
1
1,2-Dichloropropane
<0.22
2.0
0.22
ug/L
12/19/22 14:16
1
cis-1,3-Dichloropropene
<0.26
2.0
0.26
ug/L
12/19/22 14:16
1
trans-1,3-Dichloropropene
<0.23
2.0
0.23
ug/L
12/19/22 14:16
1
Ethylbenzene
<0.20
2.0
0.20
ug/L
12/19/22 14:16
1
Methylene Chloride
<3.2
10
3.2
ug/L
12/19/22 14:16
1
1,1,2,2-Tetrachloroethane
<0.40
2.0
0.40
ug/L
12/19/22 14:16
1
Tetrachloroethene
<0.35
2.0
0.35
ug/L
12/19/22 14:16
1
Toluene
<0.25
2.0
0.25
ug/L
12/19/22 14:16
1
1,1,1-Trichloroethane
<0.21
2.0
0.21
ug/L
12/19/22 14:16
1
1,1,2-Trichloroethane
<0.32
2.0
0.32
ug/L
12/19/22 14:16
1
Trichloroethene
<0.20
2.0
0.20
ug/L
12/19/22 14:16
1
Trichlorofluoromethane
<0.33
1.0
0.33
ug/L
12/19/22 14:16
1
Vinyl chloride
<0.40
10
0.40
ug/L
12/19/22 14:16
1
Dichlorodifluoromethane
<0.36
1.0
0.36
ug/L
12/19/22 14:16
1
Surrogate %Recovery Qualifier
Limits
Prepared Analyzed
Dil Fac
1,2-Dichloroethane-d4 (Surr)
98
60- 140
12119122 14:16
1
Toluene-d8 (Surr)
107
60 - 140
12119122 14:16
1
4-Bromofluorobenzene (Surr)
81
60 - 140
12119122 14:16
1
Dibromofluoromethane (Surr)
110
60 - 140
12/19/22 14:16
1
Eurofins Savannah
Page 13 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Method: 624.1 - Volatile Organic
Compounds (GC/MS)
Lab Sample ID: MB 680-755835/8
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 755835
MB
MB
Analyte
Result
Qualifier RL
MDL
Unit
D Prepared Analyzed
Dil Fac
Acrolein
<15
50
15
Ha/g
12/19/22 1 L:06
1
Acr. lonitrile
<535
50
53
Ha/g
12/19/22 1 L:06
1
Benyene
<027
23D
027
Ha/g
12/19/22 1 L:06
1
Diczlorobroh oh etzane
<0325
10
0325
Ha/g
12/19/22 1 L:06
1
Broh ororh
<03i9
10
0T59
Ha/g
12/19/22 1 L:06
1
Broh oh etzane
<LT
10
LT
Ha/g
12/19/22 1 L:06
1
Carbon tetraczloride
<03-0
23D
03-0
FU/g
12/19/22 1 L:06
1
Czlorobenyene
<0315
10
0315
FU/g
12/19/22 1 L:06
1
Czloroetzane
<f I
53D
f 33
FU/g
12/19/22 1 L:06
1
2-Czloroetz. 14in. I etzer
<019
10
019
FU/g
12/19/22 1 L:06
1
Czlorororh
<0T7
21
027
FU/g
12/19/22 1 L:06
1
Czloroh etzane
<03if
10
03if
FU/g
12/19/22 1 L:06
1
Czlorodibroh oh etzane
<03-9
10
03-9
Ha/g
12/19/22 1 L:06
1
1'2-Diczlorobenyene
<03-1
1 a)
03-1
Ha/g
12/19/22 1 L:06
1
1'L-Diczlorobenyene
<03-1
13)
03-1
Ha/g
12/19/22 1 L:06
1
11-Diczlorobenyene
<03-1
13D
03-1
Ha/g
12/19/22 1 L:06
1
1'1-Diczloroetzane
<03-L
23D
03-L
Ha/g
12/19/22 1 L:06
1
1'2-Diczloroetzane
<025
23D
025
Ha/g
12/19/22 1 L:06
1
1'1-Diczloroetzene
<03-L
23D
03-L
Ha/g
12/19/22 1 L:06
1
trans-1'2-Diczloroetzene
<03-f
23D
03-f
Ha/g
12/19/22 1 L:06
1
1'2-Diczloro+ro+ane
<0322
23D
0322
Ha/g
12/19/22 1 L:06
1
cis-1'L-Diczloro+ro+ene
<0226
23D
0326
FU/g
12/19/22 1 L:06
1
trans-1'L-Diczloro+ro+ene
<033L
23D
032L
FU/g
12/19/22 1 L:06
1
vtz.lbenyene
<0220
23D
0320
Fti/g
12/19/22 1 L:06
1
, etz. Iene Czloride
<L22
10
LT
FU/g
12/19/22 1 L:06
1
1'1'2'2-petraczloroetzane
<03 0
23D
030
FU/g
12/19/22 1 L:06
1
petraczloroetzene
<03-5
23D
03-5
Fb/g
12/19/22 1 L:06
1
polFbne
<0225
23)
035
Ha/g
12/19/22 1 L:06
1
1'1'1-priczloroetzane
<0221
23)
031
Ha/g
12/19/22 1 L:06
1
1'1'2-priczloroetzane
<03-2
23)
03-2
Ha/g
12/19/22 1 L:06
1
priczloroetzene
<020
23D
020
Ha/g
12/19/22 1 L:06
1
priczlororh-broh etzane
<03-L
13D
03-L
Ha/g
12/19/22 1 L:06
1
Ein. I czloride
<03 0
10
030
Ha/g
12/19/22 1 L:06
1
Diczlorodirli-broh etzane
<03-6
13D
03-6
Fij/g
12/19/22 1 L:06
1
MB
MB
Surrogate %Recovery
Qualifier Limits
Prepared Analyzed
Dil Fac
1,2-Dichloroethane-d4 (Surr)
97
60- 140
12119122 1: X6
1
Toluene-d8 (Surr)
107
60 - 140
12119122 1: 3)6
1
4-Bromofluorobenzene (Surr)
92
60 - 140
12119122 1: 3)6
1
Dibromofluoromethane (Surr)
107
60 - 140
12119122 1: 16
1
Lab Sample ID: LCS 680-755835/4
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 755835
Spike LCS
LCS
%Rec
Analyte
Added Result
Qualifier
Unit D %Rec Limits
Acrolein
1000 1260
Ha/g 126 60 -1f 0
Acr. lonitrile
500 f 2f
Ha/g 85 60 -1f 0
v H-onlns Sa4annaz
Page 14 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Method: 624.1 - Volatile Organic Compounds (GC/MS) (Continued)
Lab Sample ID: LCS 680-755835/4
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 755835
Spike
LCS
LCS
%Rec
Analyte
Added
Result
Qualifier Unit
D %Rec
Limits
Benyene
503D
f 73
Ha/g
95
65 -1 L5
Diczlorobroh oh etzane
503)
f 83
Ha/g
97
65 -1 L5
Broh ororh
50T
f 63i
Ha/g
9L
70 -1 LO
Broh oh etzane
503D
593B
Ha/g
120
15 -185
Carbon tetraczloride
503)
5027
Ha/g
101
70 -1 LO
Czlorobenyene
503)
f 83D
Ha/g
98
65 -1 L5
Czloroetzane
503)
122
Nf Ha/g
2f f
f 0 -160
2-Czloroetz. 14in. I etzer
50a)
f L3_
Ha/g
87
1 - 225
Czlorororh
50a)
f 7a)
Ha/g
9f
70 -1 L5
Czloroh etzane
503D
61T
Ha/g
12L
1 -205
Czlorodibroh oh etzane
503D
f 9l
FU/g
99
70 -1 L5
1 *2-Diczlorobenyene
503D
f 73D
I-U/g
9f
65 -1 L5
1 *L-Diczlorobenyene
503D
f 63B
I-U/g
9f
70 -1 LO
11-Diczlorobenyene
503D
f 6l
Ha/g
9L
65 -1 L5
1 *1-Diczloroetzane
5030
f 73
Ha/g
95
70 -1 LO
1'2-Diczloroetzane
5030
f 831
Ha/g
96
81 -121
1*1-Diczloroetzene
503)
f 831
Ha/g
96
50 -150
trans-1 *2-Diczloroetzene
503)
f 83i
Ha/g
97
70 -1 LO
1 *2-Diczloro+ro+ane
503)
f 73
Ha/g
95
L5 -165
cis-1 *L-Diczloro+ro+ene
503D
f 73B
Ha/g
96
25 -175
trans-1 *L-Diczloro+ro+ene
503D
f 83
Ha/g
97
50 -150
vtz. Ibenyene
503J
f 73B
Ha/g
96
60 -1f 0
etz. Iene Czloride
503D
50TD
Ha/g
101
60 -1f 0
1*1*2 2-petraczloroetzane
503D
f LT
Ha/g
87
60 -1f 0
petraczloroetzene
503D
f 727
Ha/g
95
70 -1 LO
poles ne
503D
f 831
I-U/g
96
70 -1 LO
1 *1 *1-priczloroetzane
503D
f 7T>
I-U/g
95
70 -1 LO
1 *1 *2-priczloroetzane
503D
f f 31
I-U/g
88
70 -1 LO
priczloroetzene
501
5031
FU/g
100
65 -1 L5
priczlororitbroh etzane
503D
713-
FU/g
1f L
50 -150
Ein. I czloride
503)
603-
FU/g
121
5 -195
LCS LCS
Surrogate %Recovery Qualifier
Limits
1,2-Dichloroethane-d4 (Surr) 91
60- 140
Toluene-d8 (Surr) 102
60 - 140
4-Bromofluorobenzene (Surr) 9:
60 - 140
Dibromofluoromethane (Surr) 101
60 - 140
Lab Sample ID: LCSD 680-75583515
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 755835
Spike
LCSD
LCSD
%Rec RPD
Analyte
Added
Result
Qualifier Unit
D %Rec
Limits RPD Limit
Acrolein
1000
976
I-U/g
98
60 -1f 0 25 60
Acr. Ionitrile
500
L29
HJ/g
66
60 -1f 0 25 60
Benyene
503D
f 822
I-U/g
96
65 -1 L5 2 61
Diczlorobroh oh etzane
5033
f 922
FU/g
98
65 -1 L5 2 56
Broh ororh
501
f 63-
FU/g
9L
70 -1 LO 1 f 2
0
v H-orins Sa4annaz
Page 15 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Project/Site: BBP
Job ID:
680-227879-1
Method: 624.1 - Volatile Organic Compounds (GC/MS)
(Continued)
Lab Sample ID: LCSD 680-755835/5
Client Sample ID: Lab Control
Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 755835
Spike
LCSD
LCSD
%Rec
RPD
Analyte
Added
Result
Qualifier Unit
D %Rec
Limits
RPD
Limit
Broh oh etzane
503)
591
Ha/g
119
15 -185
0
61
Carbon tetraczloride
503)
508'
Ha/g
101
70 -1 LO
0
f 1
Czlorobenyene
503)
f 83-
Ha/g
97
65 -1 L5
1
5L
Czloroetzane
503)
1f 0
IT Ha/g
280
f 0 -160
1 L
78
2-Czloroetz. 14in. I etzer
503)
f 63
Ha/g
9L
1 - 225
7
71
Czlorororh
503)
f 73
Ha/g
9f
70 -1 L5
0
5f
Czloroh etzane
503)
6L3
Ha/g
126
1 - 205
L
60
Czlorodibroh oh etzane
50a)
f 93
Ha/g
99
70 -1 L5
0
50
1'2-Diczlorobenyene
50a)
f 722
Ha/g
9f
65 -1 L5
1
57
1'L-Diczlorobenyene
50a)
f 731
Ha/g
9f
70 -1 LO
1
f L
1'f -Diczlorobenyene
503)
f 631
FIi/g
92
65 -1 L5
1
57
1'1-Diczloroetzane
503)
f f I
FIi/g
89
70 -1 LO
7
f 0
1'2-Diczloroetzane
503)
f 93)
FIi/g
98
81 -121
2
f 9
1'1-Diczloroetzene
503)
f 027
Ha/g
81
50 -150
17
L2
trans-1'2-Diczloroetzene
503)
f 13
Ha/g
8L
70 -1 LO
16
f 5
1'2-Diczloro+ro+ane
503)
f 93)
Ha/g
98
L5 -165
L
55
cis-1 "L-Diczloro+ro+ene
503D
f 927
Ha/g
99
25 -175
f
58
trans-1'L-Diczloro+ro+ene
503D
f 9T
Ha/g
100
50 -150
L
86
vtz. Ibenyene
503D
f 831
Ha/g
96
60 - if 0
1
6L
, etz. lene Czloride
50a)
f 03
Ha/g
81
60 - if 0
22
28
1'1'2'2-petraczloroetzane
503D
f 53-
Ha/g
91
60 - if 0
f
61
petraczloroetzene
503D
f 6a)
Ha/g
9f
70 -1 LO
2
L9
polH:ne
503D
f 83B
Ha/g
98
70 -1 LO
1
f 1
1'1'1-priczloroetzane
503D
f 73B
Ha/g
96
70 -1 LO
1
L6
1'1'2-priczloroetzane
503D
f 53B
Ha/g
92
70 -1 LO
f
f 5
priczloroetzene
503)
f 93
FU/g
99
65- 1L5
1
f 8
priczlororittroh etzane
503)
7027
I-U/g
1f 1
50 -150
1
8f
Ein. I czloride
503)
603
FU/g
121
5 -195
0
66
LCSD LCSD
Surrogate %Recovery Qualifier Limits
1,2-Dichloroethane-d4 (Surr) 92 60-140
Toluene-d8 (Surr) 102 60 -140
4-Bromofluorobenzene (Surr) 9p 60 -140
Dibromofluoromethane (Surr) 100 60 - 140
Method: 625.1 - Semivolatile Organic Compounds (GC/MS)
Lab Sample ID: MB 680-756148/6-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757062
Prep Batch: 756148
MB MB
Analyte
Result Qualifier
RL
MDL
Unit
D Prepared
Analyzed Dil Fac
1'2'f -priczlorobenyene
<0356
10
0356
Ha/g
12/20/22 1515
12/28/22 1 L:f 5 1
1'2-Di+zen. Iz. drayine
<016
10
0336
Ha/g
12/20/22 1515
12/28/22 1 L:f 5 1
11-DioVane
<12
25
12
Ha/g
12/20/22 1515
12/28/22 1 L:f 5 1
2'2xoV. bis' 1-czloro+ro+ane[
<015
10
015
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5 1
2'f'6-priczloro+zenol
<012
10
012
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5 1
2'f -Diczloro+zenol
<131
10
131
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5 1
2'f -Dih etz. I+zenol
<La)
10
La)
F j/g
12/20/22 15:L5
12/28/22 1 L:f 5 1
v H-orins Sa4annaz
Page 16 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Project/Site: BBP
Job ID: 680-227879-1
Method: 625.1 - Semivolatile Organic
Compounds (GC/MS) (Continued)
Lab Sample ID: MB 680-756148/6-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757062
Prep Batch: 756148
MB MB
Analyte
Result Qualifier
RL
MDL
Unit D
Prepared
Analyzed
Dil Fac
2'f -Dinitro+zenol
<10
50
10
FU/g
12/20/22 1515
12/28/22 11-15
1
2'f-DinitrotolFbne
<12
10
1 T
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
2'6-DinitrotolFbne
<131
10
131
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
2-Czlorona+ztzalene
<0378
10
0378
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
2-Czloro+zenol
<0330
10
0330
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
2-, etz. I+zenol
<03)1
10
0331
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
2-] itro+zenol
<031f
10
031f
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
L N f , etz. I+zenol
<19
10
13
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
L'LxDiczlorobenyidine
<LO
60
LO
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
f'6-Dinitro-2-h etz. I+zenol
<53D
50
53D
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
f -Broh o+zen. I +zen. I etzer
<03B0
10
03B0
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
f -Czloro-L-h etz. I+zenol
<131
10
131
I-U/g
12/20/22 1515
12/28/22 1 L:f 5
1
f -Czloro+zen. I +zen. I etzer
<OT1
10
0331
1-U/g
12/20/22 1515
12/28/22 1 L:f 5
1
f -] itro+zenol
<10
50
10
Hi/g
12/20/22 1515
12/28/22 1 L:f 5
1
Acena+ztzene
<0375
10
075
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Acena+ztz. lene
<010
10
010
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Antzracene
<037L
10
031
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Benyidine
<f 2
80
f 2
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Benyo'a[antzracene
<033f
10
033f
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Benyo'a[+. rene
<037f
10
037f
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Benyo'b[rtFbrantzene
<235
10
23
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Benyo'u'z i[+er. lene
<03B9
10
03139
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Benyo'k[rtFbrantzene
<03)0
10
0T0
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
1'2-Diczlorobenyene
<0T56
10
0T56
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5
1
Bis&-czloroetzoV. (h etzane
<131
10
131
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5
1
Bis&-czloroetz. I(etzer
<131
10
131
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5
1
11-Diczlorobenyene
<0�136
10
016
Fb/g
12/20/22 1515
12/28/22 1 L:f 5
1
Bis&-etz. IzeV. 1( +ztzalate
<133
10
1 �13
Fb/g
12/20/22 1515
12/28/22 1 L:f 5
1
BH. I beny. I +ztzalate
<1 T
10
1 T
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
1'f -Diczlorobenyene
<018
10
018
Fig/g
12/20/22 1515
12/28/22 1 L:f 5
1
Carbayole
<017
10
017
Fig/g
12/20/22 1515
12/28/22 1 L:f 5
1
Czr. sene
<012
10
012
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
Dibeny&a'7(antzracene
<0316
10
076
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Dietz. I +ztzalate
<0336
10
0336
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Dih etz. I +ztzalate
<017
10
0337
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Di-n-bH. I +ztzalate
<018
10
03138
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
Di-n-oct. I +ztzalate
<11
10
13-
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
IF-brantzene
<0311
10
03'1
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
IFbrene
<029L
10
029L
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5
1
FeVaczlorobenyene
<03B1
10
03131
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5
1
FeVaczlorobHadiene
<012
10
012
Ha/g
12/20/22 15:L5
12/28/22 1 L:f 5
1
FeVaczloroc. clo+entadiene
<10
20
10
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
FeVaczloroetzane
<03B1
10
0331
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
Indeno' 1'2'L-cd[+. rene
<131
10
131
1-U/g
12/20/22 1515
12/28/22 1 L:f 5
1
Iso+zorone
<0330
10
0330
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
] a+ztzalene
<0370
10
070
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
] itrobenyene
<0T)8
10
018
FU/g
12/20/22 1515
12/28/22 1 L:f 5
1
] -] itrosodih etz. lah ine
<10
20
10
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
] -] itrosodi-n-+ro+. lah ine
<031f
10
07f
Ha/g
12/20/22 1515
12/28/22 1 L:f 5
1
v H-orilns Sa4annaz
Page 17 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Method: 625.1 - Semivolatile Organic
Compounds
(GC/MS) (Continued)
Lab Sample ID: MB 680-756148/6-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757062
Prep Batch: 756148
MB
MB
Analyte
Result
Qualifier
RL
MDL Unit
D
Prepared
Analyzed Dil Fac
] ] itrosodi+zen. lah ine
<03)1
10
03d1 FU/g
12/20/22 1515
12/28/22 1 L:f 5 1
•
Pentaczloro+zenol
<11
50
11 Fla/g
12/20/22 1515
12/28/22 1 L:f 5 1
Pzenantzrene
<011
10
0331 Fla/g
12/20/22 1515
12/28/22 1 L:f 5 1
Pzenol
<131
10
131 Fla/g
12/20/22 1515
12/28/22 1 L:f 5 1
Pztzalates" potal
<03B6
10
016 Ha/g
12/20/22 1515
12/28/22 1 L:f 5 1
P. rene
<01f
10
033f Ha/g
12/20/22 1515
12/28/22 1 L:f 5 1
MB
MB
Surrogate %Recovery
Qualifier
Limits
Prepared
Analyzed Dil Fac
2,4,6-Tribromo5henol
80
p: -Ill
12120122 1p3 p
12128122 1: 31p 1
2-Fluorobi5henyl
7p
44.98
12120122 1p3 p
12128122 1: 31p 1
2-Fluoro5henol
pp
: 1.90
12120122 1p3 p
12128122 1: 31p 1
Nitrobenzene-dp
70
1 p - : 14
12120122 1 p3 p
12/28/22 1: 3lp 1
Phenol-dp
p8
8 - 424
12120122 1 p3 p
12/28/22 1: 31p 1
Ter5henyl-d14
7p
p1. 11:
12120122 1p3 p
12/28/22 1: 3lp 1
Lab Sample ID: LCS 680-756148/7-A
Client Sample ID:
Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757062
Prep Batch: 756148
Spike
LCS
LCS
%Rec
Analyte
Added
Result
Qualifier
Unit
D %Rec
Limits
1*2`f-priczlorobenyene
100
621
Ha/g
6L
f f -1f 2
1 *2-Di+zen. Iz. drayine
100
793B
Ha/g
80
f 8 -112
1 *f-DioVane
100
523
Ha/g
52
12 - 91
2*2xoV. bis' 1-czloro+ro+ane[
100
793D
Ha/g
79
LO -10f
2*f *6-pricz1oro+zeno1
100
821
Ha/g
82
L7 - if f
2*f-Diczloro+zenol
100
7LI
Ha/g
7f
L9 -1 L5
2*f -Dih etz. I+zenol
100
623B
Ha/g
6L
L2 -120
2*f -Dinitro+zenol
200
176
FU/g
88
1 -191
2*f -Dinitrotoll-bne
100
803)
Ha/g
81
L9 -1 L9
2'6-Dlnitroto1Fbne
100
773
Ha/g
77
50 -158
2-Cz1orona+ztza1ene
100
69T
Ha/g
70
60 -120
2-Cz1oro+zeno1
100
6f 3-
Ha/g
6f
2L _ 1 Lf
2-, etz. I+zenol
100
6831
FU/g
68
f L - 97
2-] itro+zenol
100
7LT
Ha/g
7f
29 -182
L N f , etz. I+zenol
100
673
Ha/g
67
f f - 99
L*LxDiczlorobenyidine
100
7L31
Ha/g
7L
1 - 262
f *6-Dinitro-2-h etz. I+zenol
200
18f
H.a/g
92
1 -181
f -Broh o+zen. I +zen. I etzer
100
7822
Ha/g
78
5L -127
f -Czloro-L-h etz. I+zenol
100
79TD
Ha/g
80
22 -1f 7
f -Czloro+zen. I +zen. I etzer
100
7631
Ha/g
76
25 -158
f -] itro+zenol
200
175
Ha/g
88
1 -1 L2
Acena+ztzene
100
7f TD
Ha/g
75
f 7 -1f 5
Acena+ztz. lene
100
753-
Ha/g
75
LL -1f 5
Antzracene
100
7822
Fb/g
78
27 -1 LL
Benyidine
100
f 637
J
Fb/g
f 7
1_ 122
Benyo'a[antzracene
100
823
FD/g
82
LL _ 1f L
Benyo'a[+. rene
100
781
FD/g
79
17.16L
Benyo'b[rtFbrantzene
100
783
FU/g
78
2f -159
v Fforins Sa4annaz
Page 18 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Method: 625.1 - Semivolatile Organic Compounds
(GC/MS) (Continued)
Lab Sample ID: LCS 680-756148/7-A
Client
Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757062
Prep Batch: 756148
Spike
LCS
LCS
%Rec
Analyte
Added
Result
Qualifier Unit
D %Rec
Limits
Benyo'u z i[+er. lene
100
8531
Ha/g
85
1 -219
Benyo'k[rtFbrantzene
100
821
Ha/g
8L
11 -162
1'2-Diczlorobenyene
100
561
Ha/g
56
L9 - 88
Bis&-czloroetzoV. (h etzane
100
753'
Ha/g
76
LL -18f
Bis&-czloroetz. I(etzer
100
7f T
Ha/g
75
12 -158
1'L-Diczlorobenyene
100
5L3D
Ha/g
5L
L7 - 87
Bis&-etz. IzeV. 1( +ztzalate
100
821
Ha/g
8L
8 -158
BH. I beny. I +ztzalate
100
8L3)
Ha/g
8f
1 -152
1'f -Diczlorobenyene
100
5f 3B
Ha/g
55
L8 - 87
Carbayole
100
793B
Ha/g
80
58 -109
Czr. sene
100
75T
Ha/g
76
17 -168
Dibeny&z(antzracene
100
82T>
I-U/g
8L
1 -227
Dietz. I +ztzalate
100
76T>
HJ/g
76
1 -120
Dih etz. I +ztzalate
100
763'
FiJ/g
77
1 -120
Di-n-bH. I +ztzalate
100
8L3_
Ha/g
8L
1 -120
Di-n-oct. I +ztzalate
100
87T
Ha/g
88
f -1f 6
IFbrantzene
100
8L3
Ha/g
8L
26 -1 L7
IFbrene
100
753)
Ha/g
75
59 -121
FeVaczlorobenyene
100
77T
Ha/g
78
1 -152
FeVaczlorobHadiene
100
583_
Ha/g
58
2f -120
FeVaczloroc. clo+entadiene
100
LOT
Ha/g
LO
1 -5L
FeVaczloroetzane
100
513B
Ha/g
52
f 0 -120
Indeno' 1'2'L-cd[+. rene
100
872D
Ha/g
88
1 -171
Iso+zorone
100
773
Ha/g
77
21 -196
] a+ztzalene
100
6722
Ha/g
67
21 -1 LL
] itrobenyene
100
7227
Ha/g
7L
L5 -180
] -] itrosodih etz. lah ine
100
77T
I-U/g
77
25 -111
] -] itrosodi-n-+ro+. lah ine
100
753
FU/g
75
1 -2L0
] -] itrosodi+zen. lah ine
100
7f 7
FU/g
75
5f -10f
Pentaczloro+zenol
200
178
Ha/g
89
1f -176
Pzenantzrene
100
79T
Ha/g
79
5f -120
Pzenol
100
6531
Ha/g
65
5 -120
P. rene
100
791
Ha/g
79
52 -120
LCS LCS
Surrogate %Recovery Qualifier
Limits
2,4,6-Tribromo5henol 82
p: -Ill
2-Fluorobi5henyl 68
44 - 98
2-Fluoro5henol p6
: 1- 90
Nitrobenzene-dp 68
1 p _ : 14
Phenol-dp 62
8 - 424
Ter5henyl-d 14 76
PI _ 11:
Lab Sample ID: LCSD 680-756148/8-A
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757062
Prep Batch: 756148
Spike
LCSD
LCSD
%Rec RPD
Analyte
Added
Result
Qualifier Unit
D %Rec
Limits RPD Limit
1'2'f-priczlorobenyene
100
6733
Ha/g
68
f f -1f 2 8 50
v H-orins Sa4annaz
Page 19 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID:
680-227879-1
Project/Site: BBP
Method: 625.1 - Semivolatile Organic Compounds
(GC/MS) (Continued)
Lab Sample ID: LCSD 680-756148/8-A
Client Sample ID: Lab Control
Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757062
Prep Batch: 756148
Spike
LCSD
LCSD
%Rec
RPD
Analyte
Added
Result
Qualifier Unit
D %Rec
Limits
RPD
Limit
1'2-Di+zen. Iz. drayine
100
853)
HJ/g
85
f 8 -112
6
f,
�
11-DioVane
100
593-
FU/g
59
12 - 91
12
57
2'2)(oV. bis' 1-czloro+ro+ane[
100
90T
Ha/g
90
LO -10f
1 L
f 2
2'f'6-pricz1oro+zenol
100
86T
Ha/g
86
L7 -1f f
f
58
2'f-Diczloro+zenol
100
811
Ha/g
82
L9 -1 L5
11
50
2'f -Dih etz. I+zenol
100
683-
Ha/g
68
L2 -120
8
58
2'f -Dinitro+zenol
200
199
Ha/g
100
1 -191
12
1 L2
2'f-DinitrotolH;ne
100
893i
Ha/g
90
L9 -1 L9
10
f 2
2'6-DinitrotolFbne
100
8LT
Ha/g
8f
50 -158
8
5L
2-Czlorona+ztzalene
100
753B
Ha/g
76
60 -120
8
2f
2-Czloro+zenol
100
7227
Ha/g
7L
2L -1 Lf
12
61
2-, etz. I+zenol
100
7f 3'
I-U/g
75
f L- 97
9
f L
2-] itro+zenol
100
80)
I-U/g
8L
29 -182
12
55
L N f, etz. I+zenol
100
7L22
I-U/g
7L
f f- 99
8
f L
L'L)(Diczlorobenyidine
100
86T
Fia/g
86
1 - 262
16
108
f'6-Dinitro-2-h etz. I+zenol
200
207
Ha/g
10f
1 -181
12
20L
f -Broh o+zen. I +zen. I etzer
100
851
Fia/g
86
5L -127
9
f L
f -Czloro-L-h etz. I+zenol
100
863
Ha/g
86
22 -1f 7
8
7L
f -Czloro+zen. I +zen. I etzer
100
811
Ha/g
81
25 -158
7
61
f -] itro+zenol
200
191
Ha/g
96
1 -1 L2
9
1 L1
Acena+ztzene
100
813-
Ha/g
81
f 7 -1f 5
9
f 8
Acena+ztz. lene
100
8135
Ha/g
82
LL -1f 5
8
7f
Antzracene
100
823i
Ha/g
8L
27 -1 LL
6
66
Benyidine
100
583B
J Ha/g
59
1 -122
2L
1 L1
Benyo'a[antzracene
100
903)
Ha/g
90
LL -1f L
9
5L
Benyo'a[+. rene
100
859
Fii/g
85
17 -16L
8
72
Benyo'b[dirbrantzene
100
853)
I-U/g
85
2f -159
8
71
Benyo'u*z i[+er. Iene
100
9031
I-U/g
90
1 -219
6
97
Benyo'k[di-brantzene
100
8f Ta
I-U/g
8f
11 -162
2
6L
1'2-Diczlorobenyene
100
621
FU/g
6L
L9 - 88
10
f 6
Bis&-czloroetzoV. (h etzane
100
827
FU/g
8L
LL -18f
9
5f
Bis&-czloroetz. I(etzer
100
823)
FU/g
82
12 -158
9
108
1'L-Diczlorobenyene
100
581
Ha/g
59
L7 - 87
10
f 9
Bis&-etz. IzeV. 1( +ztzalate
100
893'
Ha/g
90
8 -158
8
82
BH. I beny. I +ztzalate
100
923i
Ha/g
9L
1 -152
10
60
11-Diczlorobenyene
100
593i
Ha/g
60
L8 - 87
9
f 6
Carbayole
100
8527
Ha/g
86
58 -109
7
L9
Czr. sene
100
81 T
Ha/g
82
17 -168
8
87
Dibeny83 z(antzracene
100
871
Ha/g
88
1 - 227
6
126
Dietz. I +ztzalate
100
8f 31
Ha/g
8f
1 -120
10
100
Dih etz. I +ztzalate
100
8L3
Ha/g
8L
1 -120
8
18L
Di-n-bH. I +ztzalate
100
903'
I-U/g
91
1 -120
9
f 7
Di-n-oct. I +ztzalate
100
963
I-U/g
96
f -1f 6
9
69
IFbrantzene
100
893
I-U/g
89
26 -1 L7
7
66
IFbrene
100
79T
FU/g
80
59-121
6
L8
FeVaczlorobenyene
100
8f 3)
FU/g
8f
1 -152
8
55
FeVaczlorobHadiene
100
6L3
Ha/g
6L
2f -120
8
62
FeVaczloroc. clo+entadiene
100
LLT
Ha/g
LL
1 - 5L
9
f 7
FeVaczloroetzane
100
563-
Ha/g
56
f 0 -120
8
52
v FI-orins
Sa4annaz
Page 20 of 37
1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Method: 625.1 - Semivolatile Organic Compounds
(GC/MS) (Continued)
Lab Sample ID: LCSD 680-756148/8-A
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757062
Prep Batch: 756148
Spike
LCSD LCSD
%Rec
RPD
Analyte
Added
Result Qualifier
Unit
D %Rec
Limits RPD
Limit
Indeno'1'2*L-cd[+. rene
100
923)
FU/g
9L
1 - 771 6
99
Iso+zorone
100
8733
Ha/g
88
21 -196 1 L
9L
] a+ztzalene
100
7222
Ha/g
72
21 -1 LL 7
65
] itrobenyene
100
813
Ha/g
81
L5 -180 11
62
] -] itrosodih etz. lah ine
100
8527
Ha/g
86
25 -111 10
50
] -] itrosodi-n-+ro+. lah ine
100
8L35
Ha/g
8L
1 -2L0 10
87
] -] itrosodi+zen. lah ine
100
793-
Ha/g
79
5f -10f 6
L9
Pentaczloro+zenol
200
195
Ha/g
97
1f -176 9
86
Pzenantzrene
100
8f T5
Ha/g
85
5f -120 6
L9
Pzenol
100
713)
Ha/g
71
5 -120 9
6f
P. rene
100
863-
FiJ/g
86
52 -120 8
f 9
LCSD LCSD
Surrogate
%Recovery Qualifier
Limits
2,4,6-Tribromo5henol
87
p: -Ill
2-Fluorobi5henyl
7:
44 - 98
2-Fluoro5henol
62
: 1- 90
Nitrobenzene-dp
77
1 p - : 14
Phenol-dp
67
8 - 424
Ter5henyl-d14
8:
p1- 11:
Method: 608.3 - Organochlorine Pesticides/PCBs in Water
Lab Sample ID: MB 680-756643/1-A
Client Sample ID: Method
Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757018
Prep Batch: 756643
MB MB
Analyte
Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed
Dil Fac
Aldrin
<03)020
03)50
03D020
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
al+za-BFC
<03)010
03)50
03D010
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
beta-BFC
<03)020
03)50
03D020
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
uah h a-BFC �gindane(
<03)010
0150
03D010
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
delta-BFC
<03)020
0150
03D020
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
Czlordane aecznical(
<0316
0TD0
0316
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
f'f xDDp
<03DO10
03D50
03D010
F-U/g
12/22/22 21:19
12/28/22 11:f 6
1
f'f xDDv
<03DO10
03D50
03D010
I-U/g
12/22/22 21:19
12/28/22 11:f 6
1
f'f xDDD
<03D020
03D50
03D020
I-U/g
12/22/22 21:19
12/28/22 11:f 6
1
Dieldrin
<03D020
03D50
01020
FU/g
12/22/22 21:19
12/28/22 11:f 6
1
v ndosHran I
<03D020
03D50
01020
FU/g
12/22/22 21:19
12/28/22 11:f 6
1
v ndosHran II
<03D020
03D50
01020
FU/g
12/22/22 21:19
12/28/22 11:f 6
1
v ndosHran sHrate
<03D020
03D50
03D020
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
v ndrin
<03D010
03D50
03D010
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
v ndrin aldez. de
<03DOf 0
03D50
03DOf 0
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
Fe+taczlor
<03D010
03D50
03D010
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
Fe+taczlor e+oMde
<03D020
03D50
03D020
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
PCB-12f 2
<03-f
13D
03-f
Ha/g
12/22/22 21:19
12/28/22 11:f 6
1
PCB-125f
<03-f
13D
03-f
Hi/g
12/22/22 21:19
12/28/22 1116
1
PCB-1221
<03-f
13D
03-f
Ha/g
12/22/22 21:19
12/28/22 1116
1
PCB-12L2
<03-f
13)
03-f
Ha/g
12/22/22 21:19
12/28/22 1116
1
PCB-12f 8
<03-f
13D
03-f
Hi/g
12/22/22 21:19
12/28/22 11:f 6
1
v H-orrins Sa4annaz
Page 21 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Method: 608.3 - Organochlorine Pesticides/PCBs in Water (Continued)
Lab Sample ID: MB 680-756643/1-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757018
Prep Batch: 756643
MB MB
Analyte Result Qualifier
RL
MDL Unit
D
Prepared
Analyzed Dil Fac
PCB-1260 <03-f
13D
03-f Ha/g
12/22/22 21:19
12/28/22 11:f 6 1
poVa+zene <03-1
53D
03-1 Ha/g
12/22/22 21:19
12/28/22 11:f 6 1
, etzoV. czlor <03D020
03D50
03D020 Ha/g
12/22/22 21:19
12/28/22 11:f 6 1
PCB-1016 <03-2
11
03-2 Ha/g
12/22/22 21:19
12/28/22 11:f 6 1
MB MB
Surrogate %Recovery Qualifier
Limits
Prepared
Analyzed Dil Fac
Tetrachloro-m-xylene 68
26 - 140
12122122 21319
12/28/22 11316 1
DCB Decachlorobi5henyl 100
10 - 1: 1
12122122 21319
12/28/22 113t6 1
Lab Sample ID: LCS 680-756643/2-A
Client Sample ID:
Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757018
Prep Batch: 756643
Spike
LCS
LCS
%Rec
Analyte
Added
Result
Qualifier
Unit
D %Rec
Limits
Aldrin
03Jf 00
03JLf 7
J
I-U/g
87
f 2 -1f 0
al+za-BFC
03Jf 00
03JLf 7
J
F-U/g
87
L7 - if 0
beta-BFC
03Jf 00
03JLf 8
J
I-U/g
87
17 -1f 7
uah h a-BFC &Jindane(
03Jf 00
0IL66
J
Ha/g
91
L2 - if O
delta-BFC
0V 00
0lf 6f
J
Ha/g
116
19 -1f O
f I xDDp
0V 00
0lf 79
J
Ha/g
120
25 -160
f "f xDDv
03Df 00
03DL80
J
Ha/g
95
LO -1f 5
f "f xDDD
03Df 00
03DL96
J
Ha/g
99
L1 -1f O
Dieldrin
03Df 00
03DL99
J
Ha/g
100
L6 - if 6
v ndosHran I
03Df 00
03DLL5
J
Ha/g
8f
f 5 -15L
v ndosHran 11
Oa)f 00
03DL58
J
Ha/g
89
1 - 202
v ndosHran sHrate
Oa)f 00
03Df f 2
J
Ha/g
111
26 -1f f
v ndrin
03Jf 00
03Jf 51
J
Hi/g
11 L
LO -1f 7
v ndrin aldez. de
03Df 00
03JL81
J
Hi/g
95
f 9 -169
Fe+taczlor
03Jf 00
03JL91
J
Fb/g
98
Lf -1f 0
Fe+taczlor a+oMde
03Jf 00
03JL65
J
1-U/g
91
L7 -167
etzoV. czlor
03Jf 00
03Jf 90
J
HJ/g
12L
28 -167
LCS LCS
Surrogate %Recovery Qualifier
Limits
Tetrachloro-m-xylene 77
26 - 140
DCB Decachlorobi5henyl 114
10- 1: 1
Lab Sample ID: LCS 680-756643/6-A
Client Sample ID:
Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757018
Prep Batch: 756643
Spike
LCS
LCS
%Rec
Analyte
Added
Result
Qualifier
Unit
D %Rec
Limits
PCB-1260
230
217
Ha/g
95
8 -1 f 0
PCB-1016
230
212
Ha/g
92
50 -1f 0
LCS LCS
Surrogate %Recovery Qualifier
Limits
Tetrachloro-m-xylene 72
26 - 140
DCB Decachlorobi5henyl 109
10 - 1: 1
v H-orins Sa4annaz
Page 22 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Method: 608.3 - Organochlorine Pesticides/PCBs in Water (Continued)
Lab Sample ID: LCSD 680-756643/7-A
Client Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757018
Prep Batch: 756643
Spike
LCSD
LCSD
%Rec RPD
Analyte
Added
Result
Qualifier
Unit
D %Rec
Limits RPD Limit
PCB-1260
230
23-1
Fla/g
96
8 -1f O 2 L8
PCB-1016
230
2328
Fla/g
95
50 -1f 0 L L6
LCSD LCSD
Surrogate %Recovery Qualifier
Limits
Tetrachloro-m-xylene 77
26 - 140
DCB Decachlorobi5henyl 108
10- 1: 1
Method: 615 - Herbicides (GC)
Lab Sample ID: MB 680-756560/1-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 758203
Prep Batch: 756560
MB MB
Analyte Result Qualifier
RL
MDL
Unit
D
Prepared
Analyzed Dil Fac
2'f-D <0318
131
0318
Fla/g
12/22/22 1f :08
01/06/2L 1611 1
2'f-DB <0IL
21
0IL
Fla/g
12/22/22 1f :08
01/06/2L 16:f 1 1
2'f `5-p <031 f
015
031 f
Fla/g
12/22/22 1f :08
01/06/2L 1611 1
Sil4eV&*f *5-pP( <03)96
015
03)96
Ha/g
12/22/22 1f :08
01/06/2L 1611 1
Dala+on <03)9
51
019
FU/g
12/22/22 1f :08
01/06/2L 16:f 1 1
Dicah ba <03)f 6
030
03)f 6
Ha/g
12/22/22 1f :08
01/06/2L 1611 1
Diczlor+ro+ <0312
015
0312
Fla/g
12/22/22 1f :08
01/06/2L 1611 1
Dinoseb <0310
030
0310
Fla/g
12/22/22 1f :08
01/06/2L 1611 1
CPA <90
600
90
Fla/g
12/22/22 1f :08
01/06/2L 16:f 1 1
CPP <L2
200
L2
Fla/g
12/22/22 1f :08
01/06/2L 1611 1
MB MB
Surrogate %Recovery Qualifier
Limits
Prepared
Analyzed Dil Fac
2,4-Dichloro5henylacetic acid 10p 5
26-
1: 7
12/22/22 14T8
0110612: 16XI 1
Lab Sample ID: LCS 680-756560/2-A
Client Sample ID:
Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 758203
Prep Batch: 756560
Spike
LCS
LCS
%Rec
Analyte
Added
Result
Qualifier
Unit
D %Rec
Limits
2*f -D
630
779
Fla/g
122
21 -1 f 7
2'f -DB
161
183-
Fla/g
11 f
20 -1 L8
2'f `5-p
1 To
1337
Fla/g
12L
11 -1 LO
Sil4eV&*f"5-pP(
1330
118
Hia/g
118
L1-1ff
Dala+on
630
53)7
J +
Hia/g
79
10 -165
Dicah ba
LTO
L318
Fla/g
118
29 -1 LO
Diczlor+ro+
630
7316
Hia/g
112
22 -1 LO
Dinoseb
630
f T8
Hia/g
67
10 -1f 1
CPA
1600
1620
+
Ha/g
101
10 -1 LO
CPP
1600
2580
KT
Fla/g
161
10 -1 LL
LCS LCS
Surrogate %Recovery Qualifier
Limits
2,4-Dichloro5henylacetic acid 12:
26-1: 7
v H-orins Sa4annaz
Page 23 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-1
Project/Site: BBP
Method: 200.8-1994 R5.4 - Metals (ICP/MS)
Lab Sample ID: MB 680-755919/1-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total Recoverable
Analysis Batch: 756301
Prep Batch: 755919
MB MB
Analyte Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Co—er <OTO
53D
OTT
Ha/g
12/19/22 1 L15 12/21/22 05:25 1
Cadh il-h <03)78
0310
03)78
Ha/g
12/19/22 1 L15 12/21/22 05:25 1
Sil4er <03-9
53D
03-9
Ha/g
12/19/22 1 L15 12/21/22 05:25 1
Arsenic <03B6
53D
03136
Ha/g
12/19/22 1 L:L5 12/21/22 05:25 1
Ber. IIiF-h <0320
13D
0320
Ha/g
12/19/22 1 L:L5 12/21/22 05:25 1
Czroh iF-h <21
53D
2TD
Ha/g
12/19/22 1 L:L5 12/21/22 05:25 1
] ickel <11
53D
1T
F1i/g
12/19/22 1 L:L5 12/21/22 05:25 1
gead <03-f
13D
03-f
F1i/g
12/19/22 1 L15 12/21/22 05:25 1
Antih on. <032
53D
03i2
F1i/g
12/19/22 1 L15 12/21/22 05:25 1
SeleniFh <122
51
122
Fb/g
12/19/22 1 L15 12/21/22 05:25 1
pzalliFh <0226
11
026
Fb/g
12/19/22 1 L15 12/21/22 05:25 1
Zinc <10
10
10
Fb/g
12/19/22 1 L15 12/21/22 05:25 1
Method: 245.1 - Mercury (CVAA)
Lab Sample ID: MB 680-756015/1-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 756338
Prep Batch: 756015
MB MB
Analyte Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Fu <03J80
0T0
03J80
Fb/g
12/20/22 08:20 12/21/22 09:f 8 1
Lab Sample ID: LCS 680-756015/3-A
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 756338
Prep Batch: 756015
Spike
LCS LCS
%Rec
Analyte
Added
Result Qualifier
Unit D %Rec Limits
F u
230
23 f
Fb/g 98 85 -115
Method: 1664B - HEM and SGT-HEM
Lab Sample ID: MB 680-757835/1-A
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757910
Prep Batch: 757835
MB MB
Analyte Result Qualifier
RL
MDL
Unit
D Prepared Analyzed Dil Fac
Fv, 8Di1 N Grease( <13
53)
13
h u/g
01/Of/2L 1L:29 01/Of/2L 21:06 1
Lab Sample ID: LCS 680-757835/2-A
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757910
Prep Batch: 757835
Spike
LCS LCS
%Rec
Analyte
Added
Result Qualifier
Unit D %Rec Limits
Fv, 8Di1 N Grease(
f 03D
L6M
h u/g 90 78-11f
v H-onns Sa4annaz
Page 24 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Project/Site: BBP
Method: 1664B - HEM and SGT-HEM (Continued)
Lab Sample ID: LCSD 680-757835/3-A
Matrix: Water
Analysis Batch: 757910
I Analyte
Fv, 8Dil N Grease(
Method: 2540 D-2011 - Total Sus
Lab Sample ID: MB 680-75660111
Matrix: Water
Analysis Batch: 756601
MB MB
Analyte Result Qualifier
potal SFb+ended Solids <235
Lab Sample ID: LCS 680-756601/2
Matrix: Water
Analysis Batch: 756601
Analyte
Lpotal SFk+ended Solids
Lab Sample ID: LCSD 680-756601/3
Matrix: Water
Analysis Batch: 756601
Analyte
potal SFt+ended Solids
Spike
Added
f03D
Job ID: 680-227879-1
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Prep Batch: 757835
LCSD LCSD %Rec RPD
Result Qualifier Unit D %Rec Limits RPD Limit
L63J0 hu/g 90 78-11f 1 18
Solids (Dried at 103-105
Client Sample ID: Method Blank
Prep Type: Total/NA
RL RL Unit D Prepared Analyzed Dil Fac
235 23 h u/g 12/22/22 1519 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Spike LCS LCS %Rec
Added Result Qualifier Unit D %Rec Limits
987 988 h u/g 100 80 -120
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
Spike
LCSD LCSD
%Rec
RPD
Added
Result Qualifier
Unit
D %Rec Limits
RPD Limit
987
1020
h u/g
10L 80 -120
L 25
Method: 420.1-1978 - Phenolics, Total Recoverable
Lab Sample ID: MB 680-757065/1-A Client Sample ID: Method Blank
Matrix: Water Prep Type: Total/NA
Analysis Batch: 757149 Prep Batch: 757065
MB MB
Analyte Result Qualifier
RL MDL Unit
D Prepared
Analyzed Dil Fac
LPzenolics' potal Reco4erable <03J25
03J50 03J25 h u/g
12/28/22 11:16
12/28/22 15:15 1
Lab Sample ID: LCS 680-757065/2-A
Client Sample ID:
Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757149
Prep Batch: 757065
Spike LCS LCS
%Rec
Analyte
Added Result Qualifier
Unit D %Rec
Limits
Pzenolics' potal Reco4erable
03100 0181-7
h u/g 8f
75 -125
Method: 4500 NH3 G-2011 - Ammonia
FLab Sample ID: MB 680-756310/1-A
Matrix: Water
Analysis Batch: 756518
MB MB
Analyte Result Qualifier RL MDL Unit
Ah h onia <0310 035 0310 h u/g
Client Sample ID: Method Blank
Prep Type: Total/NA
Prep Batch: 756310
D Prepared Analyzed Dil Fac
12/21 /22 1 L:01 12/21 /22 15:19 1
Page 25 of 37
v H orims Sa4annaz
1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Project/Site: BBP
Method: 4500 NH3 G-2011 - Ammonia (Continued)
Lab Sample ID: LCS 680-756310/3-A
Matrix: Water
Analysis Batch: 756518
Spike
Analyte Added
Ah h onia 110
Job ID: 680-227879-1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Prep Batch: 756310
LCS LCS %Rec
Result Qualifier Unit D %Rec Limits
13)6 h u/g 106 90 -110
Method: 521OB-2011 - BOD, 5-Day
Lab Sample ID: USB 680-755653/4
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 755653
USB
USB
Analyte Result
Qualifier RL RL Unit
D Prepared Analyzed Dil Fac
Bioczeh ical OV. uen Deh and <2a)
23D 23D h u/g
12/17/22 1f :07 1
Lab Sample ID: LCS 680-755653/5
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 755653
Spike LCS LCS
%Rec
Analyte
Added Result Qualifier
Unit D %Rec Limits
Bioczeh ical OV. uen Deh and
198 189
h u/g 96 85 -115
Lab Sample ID: LCSD 680-755653/6
Client
Sample ID: Lab Control Sample Dup
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 755653
Spike LCSD LCSD
%Rec RPD
Analyte
Added Result Qualifier
Unit D %Rec Limits RPD Limit
Bioczeh ical OV. uen Deh and
198 199
h u/g 100 85 -115 5 LO
Method: 7196A - Chromium, Hexavalent
Lab Sample ID: MB 680-757549/10
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757549
MB
MB
Analyte Result
Qualifier RL MDL Unit
D Prepared Analyzed Dil Fac
LCzroh il-h &eVa4alent( <L3J
10 L3J FU/g
12/1-1/22 11-:2L 1
Lab Sample ID: LCS 680-757549/11
Client Sample ID: Lab Control Sample
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 757549
Spike LCS LCS
%Rec
Analyte
Added Result Qualifier
Unit D %Rec Limits
Czroh il-h &eVa4alent(
200 20L
Fka/g 102 85-115
Method: D7511-12 - Total Cyanide
FLab Sample ID: MB 410-330378/17
Client Sample ID: Method Blank
Matrix: Water
Prep Type: Total/NA
Analysis Batch: 330378
MB
MB
Analyte Result
Qualifier RL MDL Unit
D Prepared Analyzed Dil Fac
C. anide* potal <03D020
03D060 03D020 h u/g
12/27/22 08:27 1
v H orims Sa4annaz
Page 26 of 37 1/10/2023 (Rev. 1)

QC Sample Results
Client: Alcoa Badin Works
Project/Site: BBP
Method: D7511-12 - Total Cyanide (Continued)
Lab Sample ID: LCS 410-330378/15
Matrix: Water
Analysis Batch: 330378
Spike
Analyte
Added
C. anide* potal
03D500
Lab Sample ID: LCSD 410-330378/16
Matrix: Water
Analysis Batch: 330378
Spike
Analyte
Added
C. anide* potal
03D500
Job ID: 680-227879-1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
LCS LCS %Rec
Result Qualifier Unit D %Rec Limits
03Df L9 h u/g 88 8f -116
Client Sample ID: Lab Control Sample Dup
Prep Type: Total/NA
LCSD LCSD %Rec RPD
Result Qualifier Unit D %Rec Limits RPD Limit
03Df 85 h u/g 97 8f -116 10 20
v H-orins Sa4annaz
Page 27 of 37 1/10/2023 (Rev. 1)

QC Association Summary
Client: Alcoa Badin Works
Project/Site: BBP
GC/MS VOA
Analysis Batch: 755835
Job ID: 680-227879-1
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
624.1
680-227879-2
Trip Blank
Total/NA
Water
624.1
MB 680-755835/8
Method Blank
Total/NA
Water
624.1
LCS 680-755835/4
Lab Control Sample
Total/NA
Water
624.1
LCSD 680-755835/5
Lab Control Sample Dup
Total/NA
Water
624.1
GC/MS Semi VOA
Prep Batch: 756148
Lab Sample ID
680-227879-1
MB 680-756148/6-A
LCS 680-756148/7-A
LCSD 680-756148/8-A
Analysis Batch: 757062
Lab Sample ID
680-227879-1
MB 680-756148/6-A
LCS 680-756148/7-A
LCSD 680-756148/8-A
GC Semi VOA
Prep Batch: 756560
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
Outfall CDC
Total/NA
Water
625
Method Blank
Total/NA
Water
625
Lab Control Sample
Total/NA
Water
625
Lab Control Sample Dup
Total/NA
Water
625
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
Outfall CDC
Total/NA
Water
625.1
756148
Method Blank
Total/NA
Water
625.1
756148
Lab Control Sample
Total/NA
Water
625.1
756148
Lab Control Sample Dup
Total/NA
Water
625.1
756148
Lab Sample ID
Client Sample ID
680-227879-1
Outfall CDC
MB 680-756560/1-A
Method Blank
LCS 680-756560/2-A
Lab Control Sample
Prep Batch: 756643
Prep Type
Matrix
Method Prep Batch
Total/NA
Water
615
Total/NA
Water
615
Total/NA
Water
615
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
608
MB 680-756643/1-A
Method Blank
Total/NA
Water
608
LCS 680-756643/2-A
Lab Control Sample
Total/NA
Water
608
LCS 680-756643/6-A
Lab Control Sample
Total/NA
Water
608
LCSD 680-756643/7-A
Lab Control Sample Dup
Total/NA
Water
608
Analysis Batch: 757018
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
MB 680-756643/1-A
Method Blank
Total/NA
Water
W8.3
756643
LCS 680-756643/2-A
Lab Control Sample
Total/NA
Water
608.3
756643
LCS 680-756643/6-A
Lab Control Sample
Total/NA
Water
608.3
756643
LCSD 680-756643/7-A
Lab Control Sample Dup
Total/NA
Water
608.3
756643
Analysis Batch: 757158
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
608.3
756643
Analysis Batch: 758203
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
615
756560
Page 28 of 37
Eurofins Savannah
1/10/2023 (Rev. 1)

QC Association Summary
Client: Alcoa Badin Works
Project/Site: BBP
GC Semi VOA (Continued)
Analysis Batch: 758203 (Continued)
Job ID: 680-227879-1
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
MB 680-756560/1-A
LCS 680-756560/2-A
Method Blank
Lab Control Sample
Total/NA
Total/NA
Water
Water
615
615
756560
756560
Metals
Prep Batch: 755919
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total Recoverable
Water
200.8-1994 R5.4
MB 680-755919/1-A
Method Blank
Total Recoverable
Water
200.8-1994 R5.4
LCS 680-755919/2-A
Lab Control Sample
Total Recoverable
Water
200.8-1994 R5.4
Prep Batch: 756015
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
245.1
MB 680-756015/1-A
Method Blank
Total/NA
Water
245.1
LCS 680-756015/3-A
Lab Control Sample
Total/NA
Water
245.1
Analysis Batch: 756301
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total Recoverable
Water
200.8-1994 R5.4
755919
MB 680-755919/1-A
Method Blank
Total Recoverable
Water
200.8-1994 R5.4
755919
LCS 680-755919/2-A
Lab Control Sample
Total Recoverable
Water
200.8-1994 R5.4
755919
Analysis Batch: 756338
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
245.1
756015
MB 680-756015/1-A
Method Blank
Total/NA
Water
245.1
756015
LCS 680-756015/3-A
Lab Control Sample
Total/NA
Water
245.1
756015
General Chemistry
Analysis Batch: 330378
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
D7511-12
MB 410-330378/17
Method Blank
Total/NA
Water
D7511-12
LCS 410-330378/15
Lab Control Sample
Total/NA
Water
D7511-12
LCSD 410-330378/16
Lab Control Sample Dup
Total/NA
Water
D7511-12
Analysis Batch: 755653
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
521OB-2011
USB 680-755653/4
Method Blank
Total/NA
Water
521OB-2011
LCS 680-755653/5
Lab Control Sample
Total/NA
Water
521OB-2011
LCSD 680-755653/6
Lab Control Sample Dup
Total/NA
Water
521OB-2011
Prep Batch: 756310
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
4500 NH3
B-2011
MB 680-756310/1-A
Method Blank
Total/NA
Water
4500 NH3
B-2011
Eurofins Savannah
Page 29 of 37 1/10/2023 (Rev. 1)

QC Association Summary
Client: Alcoa Badin Works
Job ID:
680-227879-1
Project/Site: BBP
General Chemistry (Continued)
Prep Batch: 756310 (Continued)
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
LCS 680-756310/3-A
Lab Control Sample
Total/NA
Water
4500 NH3
B-2011
Analysis Batch: 756518
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
4500 NH3
756310
G-2011
MB 680-756310/1-A
Method Blank
Total/NA
Water
4500 NH3
756310
G-2011
LCS 680-756310/3-A
Lab Control Sample
Total/NA
Water
4500 NH3
756310
G-2011
Analysis Batch: 756601
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
2540 D-2011
MB 680-756601/1
Method Blank
Total/NA
Water
2540 D-2011
LCS 680-756601/2
Lab Control Sample
Total/NA
Water
2540 D-2011
LCSD 680-756601/3
Lab Control Sample Dup
Total/NA
Water
2540 D-2011
Prep Batch: 757065
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
Distill/Phenol
MB 680-757065/1-A
Method Blank
Total/NA
Water
Distill/Phenol
LCS 680-757065/2-A
Lab Control Sample
Total/NA
Water
Distill/Phenol
Analysis Batch: 757149
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
420.1-1978
757065
MB 680-757065/1-A
Method Blank
Total/NA
Water
420.1-1978
757065
LCS 680-757065/2-A
Lab Control Sample
Total/NA
Water
420.1-1978
757065
Analysis Batch: 757549
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
7196A
MB 680-757549/10
Method Blank
Total/NA
Water
7196A
LCS 680-757549/11
Lab Control Sample
Total/NA
Water
7196A
Prep Batch: 757835
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
1664B
MB 680-757835/1-A
Method Blank
Total/NA
Water
1664B
LCS 680-757835/2-A
Lab Control Sample
Total/NA
Water
1664B
LCSD 680-757835/3-A
Lab Control Sample DuD
Total/NA
Water
1664B
Analysis Batch: 757910
Lab Sample ID
Client Sample ID
Prep Type
Matrix
Method
Prep Batch
680-227879-1
Outfall CDC
Total/NA
Water
1664B
757835
MB 680-757835/1-A
Method Blank
Total/NA
Water
1664B
757835
LCS 680-757835/2-A
Lab Control Sample
Total/NA
Water
1664B
757835
LCSD 680-757835/3-A
Lab Control Sample Dup
Total/NA
Water
1664B
757835
Eurofins Savannah
Page 30 of 37 1/10/2023 (Rev. 1)

Lab Chronicle
Client: Alcoa Badin Works
Job ID:
680-227879-1
Project/Site: BBP
Client Sample
ID: Outfall CDC
Lab
Sample ID: 680-227879-1
Date Collected: 12/15/22
12:03
Matrix: Water
Date Received: 12/16/22
08:15
Batch Batch
Dil
Initial
Final
Batch
Prepared
Prep Type
Type Method Run
Factor
Amount
Amount
Number
or Analyzed
Analyst Lab
Total/NA
Analysis 624.1
1
5 mL
5 mL
755835
12/19/22 20:37
P1 C
EET SAV
Instrument ID: CMSU
Total/NA
Prep 625
1039.5 mL
1 mL
756148
12/20/22 15:35
IR
EET SAV
Total/NA
Analysis 625.1
1
1 mL
1 mL
757062
12/28/2218:25
TIC
EET SAV
Instrument ID: CMSG
Total/NA
Prep 608
261.3 mL
1 mL
756643
12/22/22 21:19
MR
EET SAV •
Total/NA
Analysis 608.3
1
1 mL
1 mL
757158
12/28/22 19:52
JCK
EET SAV
Instrument ID: CSGAA
Total/NA
Prep 615
131.2 mL
5 mL
756560
12/22/22 14:08
KID
EET SAV
Total/NA
Analysis 615
1
1 mL
1 mL
758203
01 /06/23 21:22
JCK
EET SAV
Instrument ID: CSGS
Total Recoverable
Prep 200.8-1994 R5.4
50 mL
250 mL
755919
12/19/22 14:04
RR
EET SAV
Total Recoverable
Analysis 200.8-1994 R5.4
1
756301
12/21/22 06:12
BWR
EET SAV
Instrument ID: ICPMSC
Total/NA
Prep 245.1
50 mL
50 mL
756015
12/20/22 08:20
BCB
EET SAV
Total/NA
Analysis 245.1
1
756338
12/21/22 10:00
BCB
EET SAV
Instrument ID: LEEMAN2
Total/NA
Prep 1664B
1054 mL
500 mL
757835
01/04/23 13:29
TD
EET SAV
Total/NA
Analysis 1664B
1
757910
01/04/23 21:06
TD
EET SAV
Instrument ID: NoEquip
Total/NA
Analysis 2540 D-2011
1
1000 mL
1000 mL
756601
12/22/22 15:39
PG
EET SAV
Instrument ID: NOEQUIP
Total/NA
Prep Distill/Phenol
6 mL
6 mL
757065
12/28/22 11:16
SM
EET SAV
Total/NA
Analysis 420.1-1978
1
6 mL
6 mL
757149
12/28/22 15:23
SM
EET SAV
Instrument ID: KONELAB3
Total/NA
Prep 4500 NH3 B-2011
6 mL
6 mL
756310
12/21/22 13:01
PB
EET SAV
Total/NA
Analysis 4500 NH3 G-2011
1
2 mL
2 mL
756518
12/21/22 15:09
PB
EET SAV
Instrument ID: KONELAB1
Total/NA
Analysis 521OB-2011
1
755653
12/17/22 16:33
JE
EET SAV
Instrument ID: BOD 2
Total/NA
Analysis 7196A
1
2 mL
2 mL
757549
12/31/22 13:24
EO
EET SAV
Instrument ID: KONELAB4
Total/NA
Analysis D7511-12
1
330378
12/27/22 08:44
CBM8 ELLE
Instrument ID: 19369
Client Sample ID: Trip Blank
Lab Sample ID: 680-227879-2
Date Collected: 12/15/22 12:00
Matrix: Water
Date Received: 12/16/22 08:15
Batch Batch Dil Initial Final
Batch Prepared
Prep Type Type Method Run Factor Amount Amount
Number or Analyzed Analyst Lab
Total/NA Analysis 624.1 1 5 mL 5 mL
755835 12/19/22 14:16 P1 C EET SAV
Instrument ID: CMSU
Laboratory References:
EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL [phone]
ELLE = Eurofins Lancaster Laboratories Environment Testing, LLC, 2425 New Holland Pike, Lancaster,
PA 17601, TEL [phone]
Eurofins Savannah
Page 31 of 37
1/10/2023 (Rev. 1)

i
N
LO
C N tN
c
M
Q Cr)
(n O Q
V) U
C O N_
�1. N O)
J C C
O @ S
W u7 U3
O
l
c O O N a° c Q ro
N'
axiortI�m�ANa
Sz QZZZSQ'�
a
ro
a
m
o
in iz Oado: v7F»3}N
.�+"
O
o
U
0
U
0
U
00
m
9
y
C
,'
I
2
]
to
« a { Q
'1j ,y
p
aas�p
J
S
U)
o
z
N
4
L J O Q O u U > F Q
v U m c ro m E o o
N SZNZZMQQ ii❑W W m
r
U
U Q'
U (D
m
6� 0.
-°I
fL QmUO W W U' 2_ YJ
OD
d -1aed - 03Nd £ s0s
m
E�
E
E
dd-89JoH 5L9�
0001'e'1'E'Z-6£L5L
'�'A
��
eplueRO • ZL LLSZO
d
a
°
�j
m
m
eluowwy-0£HNOOM4YS
",.. ,.�.�
y
vaseai0Pue110-9499L
N
a
(551) PepuedenS lelol'gPll°S - 0045ZaEi
008-90LZ5'j
c
l
E
>,
ro
s ao vssLc'
w
m
c
Q
q U
CY
m
dal- L'OZ4
c
dd - snoA- 03Md L'4Z9
m
m
E
O
2
a
$
a
w
a
F-
dd - goons - 03Ud L'M
`
L'S4Z 'VMS O'OOL
.. ...
0
U)
S
E
2 E
m
t+-7t1
iG "" 1 S
pk lel ll� plow,
1
a o
.� .
IL
"p'. v
N
c
c
m
o
U
E
0
U
cu
C o :
o
o
E T O u.,
rl
a
a
�
a
K*'9
tlr
s
a
E
�
�ru
c
❑
LL
o
4q
a
Of
❑.
j
raj
l
m
°
co
e?
o
E
:. ,.,f
O
y
O
Q
0
iTy�
0.
Y
v
z
L
V
J
0 o
o
_
~
e
C
0
.
I
c
i
v
y
o
m
>
a
>
>
c
Kz
4
T
m_
W
S
Jq
C
ui
m
o
c m
a O
M
ap
00
N
N�
f0
c
z
d
y
U
iz
,>
—°
c
oU�ornim«(
`O
«
,fit
aE
d
E
O®
a)
E
m
-
U
ciU
UQ
QN
Um
mZ
ar
w
n
N
V)
O
❑
W
Page 32 of 37
1/10/2023 (Rev. 1)

Eurofins Savannah
5102 LaRoche Avenue
Savannah, GA 31404
Phone [phone] Fax.[phone]
Chain of Custody Record
f tier eurofins i
Environment Testing
Sampler
Lab PM-
Carrier Tracking No(s)
COC No:
Client Information Sub Contract Lab
Hoffman, Sheila B
680-721476.1
Client Contact.
Phone
E-Mail.
State of Origin
Page:
Shipping/Receiving
Sheila Hoffman@et eurofinsus com
North Carolina
Page 1 of 1
Company:
Accreddations Required (See note).
Job n
Eurofins Lancaster Laboratories Environm
State Program - North Carolina (WW/SW)
680-227879-1
Address:
Due Date Requested:
Preservation Codes:
2425 New Holland Pike,
12/28/2022
Analysis
Requested
A HCL M- Hexane
N - None
B-NaOH
Gty:
TAT Requested (days):
Lancaster
0-AsNa02
C - Zn Acetate P - Na204S
D - Nitric Add
State, Zip:
PA, 17601
O - Na2SO3
E - NaHSO4
R - Na2S203
F - McOH S - H2SO4
G - Amchlor
Phone:
PO N
717-656-2300(Tel)
o
2
p
H - Ascorbic Acid T - Dodecahydrate
I - Ice U - AAcetone
Email
WON
o
ct
J - DI Water
0
=
8
rj
,p
W pHM4-5
K - EDTA Y • Tnzma
L - EDA
Project Name
Project #
BBP
68000358
ro
E
m
a
m
o
U
Z - other (spemty)
Oth er
S to
SSOWN.E
fin
rn
�I
U
Sample
Matrix
n
Type
(vt.sw.
LL
E
?
r
z
Sample
(C=Comp,
$gelid,
o.,, arox,
m
t
n
Sample Identification - Client ID Lab ID
Sample Date
Time
G= rab)
BT•TI„ .A•Alr
X
IL
o
I°—
Special Instructions/Note:
Preservation Code:
Outfall CDC (680-227879-1)
12/15/22
00:03
Water
X
X
3
Eastern
11
ITT
Note. Since laboratory accreditations are subject to change, Eurofins Environment Testing Southeast, LLC places the ownership of method, analyte 6 accreditation compliance upon our subcontract laboratories. This sample shipment is forwarded under chain -of -custody. lithe laboratory
does not currently maintain accreditation in the State of Ongin listed above for analysisliests/matnx being analyzed, the samples must be shipped back to the Eurofins Environment Testing Southeast, LLC laboratory or other instructions will be provided. Any changes to accreditation
status should be brought to Eurofins Environment Testing Southeast, LLC attention immediately. If all requested accreditations are current to dale, return the signed Chain of Custody attesting to said compliance to Eurofins Environment Testing Southeast, LLC.
Possible Hazard Identification
Sample Disposal (A fee may be assessed if samples are retained longer than 1 month)
Unconfirmed
= Return To Client O Disposal By Lab Archive For Months
Deliverable Requested: I, II, III, IV, Other (specify) Primary Deliverable Rank. 2
Special Instructions/QC Requirements:
Empty Kit RelingiVd b4t Date: Time (Method of Shipment:
i
Relinquished by
/--
DaterTlme: /
`
Com any
Received by:
Date/7ime
'Company
Ralinquishetl by
Date/Time:
p y
Received by:
Daterrime.
ompany
1
Relinquished by
Daterrlme
Com any
� t-� F
ompany
Receor y
r -y
Da me
it -'�z It q0!
Cust dy eals Intact.
Custody Seal No.:
Cooler Temperature(s)°C and Other Remarks "I
Ye No
, II
0
Page 33 of 37
Vcr 06!08/2021
1/10/2023 (Rev. 1)

Login Sample Receipt Checklist
Client: Alcoa Badin Works
Job Number: 680-227879-1
Login Number: 227879
List Source: Eurofins Savannah
List Number: 1
Creator: Sims, Robert D
Question
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey
N/A
meter.
The cooler's custody seal, if present, is intact.
True
Sample custody seals, if present, are intact.
True
The cooler or samples do not appear to have been compromised or
True
tampered with.
Samples were received on ice.
True
Cooler Temperature is acceptable.
True
Cooler Temperature is recorded.
True
COC is present.
True
COC is filled out in ink and legible.
True
COC is filled out with all pertinent information.
True
Is the Field Sampler's name present on COC?
True
There are no discrepancies between the containers received and the COC.
False Received Trip Blank(s) not listed on COC.
Samples are received within Holding Time (excluding tests with immediate
True
HTs)
Sample containers have legible labels.
True
Containers are not broken or leaking.
True
Sample collection date/times are provided.
True
Appropriate sample containers are used.
True
Sample bottles are completely filled.
True
Sample Preservation Verified.
N/A
There is sufficient vol. for all requested analyses, incl. any requested
True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is
N/A
<6mm (1/4").
Multiphasic samples are not present.
True
Samples do not require splitting or compositing.
True
Residual Chlorine Checked.
N/A
Eurofins Savannah
Page 34 of 37 1/10/2023 (Rev. 1)

Login Sample Receipt Checklist
Client: Alcoa Badin Works
Job Number: 680-227879-1
Login Number: 227879 List Source: Eurofins Lancaster Laboratories Environment Testing, LLC
List Number: 2 List Creation: 12/21/22 01:09 PM
Creator: Ballard, Megan
Question Answer Comment
The cooler's custody seal is intact.
True
The cooler or samples do not appear to have been compromised or
True
tampered with.
Samples were received on ice.
True
Cooler Temperature is acceptable (</=6C, not frozen).
True
Cooler Temperature is recorded.
True
WV: Container Temperature is acceptable (</=6C, not frozen).
N/A
WV: Container Temperature is recorded.
N/A
COC is present.
True
COC is filled out in ink and legible.
True
COC is filled out with all pertinent information.
True
There are no discrepancies between the containers received and the COC.
True
Sample containers have legible labels.
True
Containers are not broken or leaking.
True
Sample collection date/times are provided.
True
Appropriate sample containers are used.
True
Sample bottles are completely filled.
True
There is sufficient vol. for all requested analyses.
True
Is the Field Sampler's name present on COC?
False Received project as a subcontract.
Sample custody seals are intact.
N/A
VOA sample vials do not have headspace >6mm in diameter (none, if from
N/A
WV)?
Eurofins Savannah
Page 35 of 37 1/10/2023 (Rev. 1)

Accreditation/Certification Summary
Client: Alcoa Badin Works
Project/Site: BBP
Laboratory: Eurofins Savannah
The accreditations/certifications listed below are applicable to this report.
Job ID: 680-227879-1
Authority Program Identification Number Expiration Date
North Carolina (WW/SW) State 269 12-31-23
Laboratory: Eurofins Lancaster Laboratories Environment Testing, LLC
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority
Program
Identification Number
Expiration Date
A21-A
Dept. of Defense ELAP
0001.01
11-30-24
A21-A
ISO/IEC 17025
0001.01
11-30-24
Alaska
State
PA00009
06-30-23
Alaska (UST)
State
17-027
02-28-23
Arizona
State
AZ0780
03-12-23
Arkansas DEQ
State
88-00660
08-09-23
California
State
2792
11-30-22 "
Colorado
State
PA00009
06-30-23
Connecticut
State
PH-0746
06-30-23
DE Haz. Subst. Cleanup Act (HSCA)
State
019-006 (PA cert)
01-31-23
Delaware (DW)
State
N/A
01-31-23
Florida
NELAP
E87997
06-30-23
Georgia (DW)
State
C048
01-31-23
Hawaii
State
N/A
01-31-23
Illinois
NELAP
200027
01-31-23
Iowa
State
361
03-01-24
Kansas
NELAP
E-10151
10-31-23
Kentucky (DW)
State
KY90088
12-31-22
Kentucky (UST)
State
0001.01
11-30-24
Kentucky (WW)
State
KY90088
12-31-22
Louisiana (All)
NELAP
02055
06-30-23
Maine
State
2019012
03-12-23
Maryland
State
100
06-30-23
Massachusetts
State
M-PA009
01-14-23
Michigan
State
9930
01-31-23
Minnesota
NELAP
042-999-487
12-31-23
Mississippi
State
022
01-31-23
Missouri
State
450
01-31-25
Montana (DW)
State
0098
01-01-23
Montana (UST)
State
<cert No.>
02-01-23
Nebraska
State
NE-OS-32-17
01-31-23
New Hampshire
NELAP
2730
01-10-23
New Jersey
NELAP
PA011
06-30-23
New York
NELAP
10670
04-01-23
North Carolina (DW)
State
42705
07-31-23
North Carolina (WW/SW)
State
521
12-31-22
North Dakota
State
R-205
01-31-23
Oklahoma
NELAP
R-205
08-31-23
Oregon
NELAP
PA200001
09-11-23
PALA
Canada
1978
09-16-24
Pennsylvania
NELAP
36-00037
01-31-23
Rhode Island
State
LAO00338
12-30-22
South Carolina
State
89002
01-31-23
Tennessee
State
02838
01-31-23
" Accreditation/Certification renewal pending - accreditation/certification considered valid.
Eurofins Savannah
Page 36 of 37 1/10/2023 (Rev. 1)

Accreditation/Certification Summary
Client: Alcoa Badin Works
Project/Site: BBP
Job ID: 680-227879-1
Laboratory: Eurofins Lancaster Laboratories Environment Testing, LLC (Continued)
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
Authority
Program
Texas
NELAP
USDA
US Federal Programs
Vermont
State
Virginia
NELAP
Washington
State
West Virginia (DW)
State
West Virginia DEP
State
Wyoming
State
Wyoming (UST)
A21-A
Identification Number Expiration Date
T104704194-22-45
08-31-23
P330-19-00197
08-09-23
VT - 36037
10-28-23
460182
06-14-23
C457
04-11-23
9906 C
12-31-22
055
07-31-23
8TMS-L
01-31-23
0001.01
11-30-24
Eurofins Savannah
Page 37 of 37 1/10/2023 (Rev. 1)

%%eurofins
Environment Testing
� ANALYTICAL REPORT
0
0
0
PREPARED FOR m
Attn: Randall Kiser
Alcoa Badin Works
293 Highway 740
Badin, North Carolina 28009
Generated 1 /6/2023 2:58:00 PM
JOB DESCRIPTION
...
JOB NUMBER
680-227879-2

The test results in this report meet NELAP requirements for parameters for which accreditation is required or available. Any
exceptions to the NELAP requirements are noted. Results pertain only to samples listed in this report. This report may not be
reproduced, except in full, without the written approval of the laboratory. Questions should be directed to the person who
signed this report.
The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the
methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written
approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project
Manager.
- Generated �A� 74zz1/6/2023 2:58:00 PM
Authorized for release by
Sheila Hoffman, Project Manager II
Sheila. Hoffman (a)et.eu rofinsus.com
[phone]
Eurofins Savannah is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies
Page 2 of 15 1 /6/2023

Sample Summary
Client: Alcoa Badin Works
Project/Site: BBP
Lab Sample ID Client Sample ID
680-227879-1 Outfall CDC
Matrix
Water
Collected Received
12/15/22 00:03 12/16/22 08:15
Job ID: 680-227879-2
Page 3 of 15
Eurofins Savannah
1 /6/2023

Method Summary
Client: Alcoa Badin Works Job ID: 680-227879-2
Project/Site: BBP
Method Method Description Protocol Laboratory
1613B Dioxins and Furans (HRGC/HRMS) EPA ELLE
1613B Separatory Funnel (Liquid -Liquid) Extraction EPA ELLE
Protocol References:
EPA = US Environmental Protection Agency
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Environment Testing, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
Eurofins Savannah
Page 4 of 15 1 /6/2023

Definitions/Glossary
Client: Alcoa Badin Works Job ID: 680-227879-2
Project/Site: BBP
Glossary
Abbreviation These commonly used abbreviations may or may not be present in this report.
rX Listed under the "D" column to designate that the result is reported on a dry weight basis
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference)
oil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re -analysis, Re -extraction, or additional Initial metals/anion analysis of the sample
DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level'
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown)
NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRIES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points
TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Savannah
Page 5 of 15 1 /6/2023

Case Narrative
Client: Alcoa Badin Works
Project/Site: BBP
Job ID: 680-227879-2
Laboratory: Eurofins Savannah
Narrative
Job Narrative
680-227879-2
Job ID: 680-227879-2
Receipt
The samples were received on 12/16/2022 8:15 AM. Unless otherwise noted below, the samples arrived in good condition, and, where
required, properly preserved and on ice. The temperature of the cooler at receipt time was 3.6°C
Dioxin
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.
Eurofins Savannah
Page 6 of 15 1 /6/2023

Client Sample Results
Client: Alcoa Badin Works
Job ID: 680-227879-2
Project/Site: BBP
Client Sample ID: Outfall CDC
Lab Sample ID: 680-227879-1
Date Collected: 12/15/22 00:03
Matrix: Water
Date Received: 12/16/22 08:15
Method: EPA 1613B - Dioxins and Furans (HRGC/HRMS)
Analyte
Result Qualifier RL EDL Unit
D Prepared
Analyzed Dil Fac
2,3,7,8-TCDD
<3.8 3.8 pg/L
01/04/2312:52
01/05/2317:54 1
Isotope Dilution
%Recovery Qualifier Limits
Prepared
Analyzed Dil Fac
13C-2, 3, 7, 8-TCDD
42 25 - 164
01104123 12:52
01105123 17:54 1
Eurofins Savannah
Page 7 of 15 1 /6/2023

Isotope Dilution Summary
Client: Alcoa Badin Works
Project/Site: BBP
Method: 1613B - Dioxins and Furans (HRGC/HRMS)
Matrix: Water
TCDD
Lab Sample ID Client Sample ID
(25-164)
680-227879-1 Outfall CDC
42
MB 410-332516/1-A Method Blank
42
Surrogate Legend
TCDD = 13C-2,3,7,8-TCDD
Method: 1613B - Dioxins and Furans (HRGC/HRMS)
Matrix: Water
TCDD
Lab Sample ID Client Sample ID (20-175)
LCS 410-332516/2-A Lab Control Sample 95
Surrogate Legend
TCDD = 13C-2,3,7,8-TCDD
Job ID: 680-227879-2
Percent Isotope Dilution Recovery (Acceptance Limits)
Percent Isotope Dilution Recovery (Acceptance Limits)
Total/NA
Total/NA
0
Page 8 of 15
Eurofins Savannah
1 /6/2023

QC Sample Results
Client: Alcoa Badin Works
Project/Site: BBP
Method: 1613B - Dioxins and Furans (HRGC/HRMS)
Lab Sample ID: MB 410-332516/1-A
Matrix: Water
Analysis Batch: 332462
MB MB
Analyte Result Qualifier
2-3<7�6-. CDD pgLD
MB MB
Isotope Dilution %Recovery Qualifier
13C-2, 3, 7, 8-TCDD 42
Lab Sample ID: LCS 410-332516/2-A
Matrix: Water
Analysis Batch: 332462
Analyte
2-317�8-. CDD
RL
9LD
Limits
25 - 164
Spike
Added
200
LCS LCS
Isotope Dilution %Recovery Qualifier Limits
13C-2, 3, 7, 8-TCDD 95 20 - 175
EDL Unit
14/5
LCS LCS
Result Qualifier Unit
.86 14/5
Job ID: 680-227879-2
Client Sample ID: Method Blank
Prep Type: Total/NA
Prep Batch: 332516
D Prepared
Analyzed Dil Fac
0, /Og/23 , 2:T2
0, /Og/23 , 7:T9
Prepared
Analyzed Dil Fac
01104123 12:52
01104123 17 59 1
Client Sample ID: Lab Control Sample
Prep Type: Total/NA
Prep Batch: 332516
%Rec
D %Rec
Limits
93
67 - . T8
Page 9 of 15
Eurofins Savannah
1 /6/2023

QC Association Summary
Client: Alcoa Badin Works
Project/Site: BBP
Specialty Organics
Analysis Batch: 332462
Lab Sample ID
Client Sample ID
MB 410-332516/1-A
Method Blank
LCS 410-332516/2-A
Lab Control Sample
Prep Batch: 332516
Lab Sample ID
Client Sample ID
680-227879-1
Outfall CDC
MB 410-332516/1-A
Method Blank
LCS 410-332516/2-A
Lab Control Sample
Analysis Batch: 332652
Lab Sample ID
Client Sample ID
680-227879-1
Outfall CDC
Job ID: 680-227879-2
Prep Type
Matrix
Method
Prep Batch
Total/NA
Water
1613B
332516
Total/NA
Water
1613B
332516
Prep Type
Matrix
Method
Prep Batch
Total/NA
Water
1613E
Total/NA
Water
1613E
Total/NA
Water
1613E
Prep Type
Matrix
Method
Prep Batch
Total/NA
Water
1613B
332516
Eurofins Savannah
Page 10 of 15 1/6/2023

Lab Chronicle
Client: Alcoa Badin Works
Project/Site: BBP
Job ID: 680-227879-2
Client Sample ID: Outfall CDC Lab Sample ID: 680-227879-1
Date Collected: 12/15/22 00:03 Matrix: Water
Date Received: 12/16/22 08:15
Batch
Batch
Dil Initial
Final
Batch
Prepared
Prep Type
Type
Method
Run Factor Amount
Amount
Number
or Analyzed
Analyst Lab
Total/NA
Prep
1613B
1042.6 mL
20 uL
332516
01/04/23 12:52
UJSZ ELLE
Total/NA
Analysis
1613B
1 20 uL
20 uL
332652
01/05/23 17:54
DZ6A ELLE
Instrument ID: DF18471
Laboratory References:
ELLE = Eurofins Lancaster Laboratories Environment Testing, LLC, 2425 New Holland Pike, Lancaster, PA 17601, TEL [phone]
0
Page 11 of 15
Eurofins Savannah
1 /6/2023

i
.0
C m LL
c
M Lr,
M > Cr) a
Q
N cLi 0
C O (�
Cr
m m O
Q — (L
N �
W @ S
n vy a
l
T
c O O a° c Q ro
«6
N'
C
axi o zt� m A
2z QZ Z aF o
�'
a
ro
a
m
O
. I I I
in i z O a 0 w (Q :3 N
-�
O
o
U
0
U
0
U
9
C
2
to
p
J
S
V)
o 11
z
—
a)v
$k
L J O Q.t O u U > F Q
U m c ro m E o o
N SZNZzm 66 ii❑W W m
r
U
U Q'
000
f0
rn m
OD
d 190d 03Nd £ 00e
OD
m
dd-89JGH SO
0401-82'E'Z-6£L9L
"�'A
��
aplueRO•ZL Lwza
a
°
�j
m
elu°wwy- £HN00M4 YS
v
19
N
a)
N
aseei0Pue110-9499L
a
m
(SS1) PepuedsnS lelol'sPllOS - 0045Z
008-90LZ9'j
,�.�
m
c
E
>,
�
a�i
�
ui
m
c
Q
q U
CY
m
dal- L'OZ4
c
dd - seOA - 03LId L'4Z9
ro
m
E
2
a
a
a
dd - 930AS - 03Ud L'9Z9F-
L'94Z'VMS O'OOL
.. ...�
w
Of
lw I
tj
M
E
E
m
t±
N �d V1 w*g
pd�+181N NOW
F
_- a
6
a o
.� .
.mac
2
tit [n
x e ?"
v
N
u
c
c
" €
m
`�`
E
o
U
E
0
U
O. N 0
o
E T
a
a
�
K*'9
tlr
s
ri
a
E
�ELL
c
❑
I ra
� �
i,
o
4q�
�_J.
j
l
m
°
coOO
e?
v�i
#E
o
E00
0
l ~
C
O
y
O
O
U
O
Q
0
iTy�
0.
Y
v
z
L
V
o m
>
o
0
c
i
v
y
o
m
>
a
>
>
Kz
m
C
'
�2
v
a
U
x 2
N
X
U
CO
Y
o
co.
c m
0
f
c
0
N N0
f0
c�
..
N
Z
T'i
y
—°
oU�ornim
p(
E
a
d
m
O
a
E
—
V
UCl)
mZ
ar•
w
Q`
N
(71
:. O
CL
❑
w
w
Page 12 of 15
1 /6/2023

Login Sample Receipt Checklist
Client: Alcoa Badin Works Job Number: 680-227879-2
Login Number: 227879
List Number: 1
Creator: Sims, Robert D
Question
List Source: Eurofins Savannah
Answer Comment
Radioactivity wasn't checked or is </= background as measured by a survey
N/A
meter.
The cooler's custody seal, if present, is intact.
True
Sample custody seals, if present, are intact.
True
The cooler or samples do not appear to have been compromised or
True
tampered with.
Samples were received on ice.
True
Cooler Temperature is acceptable.
True
Cooler Temperature is recorded.
True
COC is present.
True
COC is filled out in ink and legible.
True
COC is filled out with all pertinent information.
True
Is the Field Sampler's name present on COC?
True
There are no discrepancies between the containers received and the COC.
False Received Trip Blank(s) not listed on COC.
Samples are received within Holding Time (excluding tests with immediate
True
HTs)
Sample containers have legible labels.
True
Containers are not broken or leaking.
True
Sample collection date/times are provided.
True
Appropriate sample containers are used.
True
Sample bottles are completely filled.
True
Sample Preservation Verified.
N/A
There is sufficient vol. for all requested analyses, incl. any requested
True
MS/MSDs
Containers requiring zero headspace have no headspace or bubble is
N/A
<6mm (1/4").
Multiphasic samples are not present.
True
Samples do not require splitting or compositing.
True
Residual Chlorine Checked.
N/A
Eurofins Savannah
Page 13 of 15 1/6/2023

Login Sample Receipt Checklist
Client: Alcoa Badin Works Job Number: 680-227879-2
Login Number: 227879
List Number: 2
Creator: Ballard, Megan
Question
List Source: Eurofins Lancaster Laboratories Environment Testing, LLC
List Creation: 12/21/22 01:09 PM
Answer Comment
The cooler's custody seal is intact.
True
The cooler or samples do not appear to have been compromised or
True
tampered with.
Samples were received on ice.
True
Cooler Temperature is acceptable (</=6C, not frozen).
True
Cooler Temperature is recorded.
True
WV: Container Temperature is acceptable (</=6C, not frozen).
N/A
WV: Container Temperature is recorded.
N/A
COC is present.
True
COC is filled out in ink and legible.
True
COC is filled out with all pertinent information.
True
There are no discrepancies between the containers received and the COC.
True
Sample containers have legible labels.
True
Containers are not broken or leaking.
True
Sample collection date/times are provided.
True
Appropriate sample containers are used.
True
Sample bottles are completely filled.
True
There is sufficient vol. for all requested analyses.
True
Is the Field Sampler's name present on COC?
False Received project as a subcontract.
Sample custody seals are intact.
N/A
VOA sample vials do not have headspace >6mm in diameter (none, if from
N/A
my"
Eurofins Savannah
Page 14 of 15 1/6/2023

Accreditation/Certification Summary
Client: Alcoa Badin Works
Project/Site: BBP
Laboratory: Eurofins Lancaster Laboratories Environment Testing, LLC
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.
A21LA
Dept. of Defense ELAP
A21LA
ISO/IEC 17025
Alaska
State
Alaska (UST)
State
Arizona
State
Arkansas DEQ
State
California
State
Colorado
State
Connecticut
State
DE Haz. Subst. Cleanup Act (HSCA)
State
Delaware (DW)
State
Florida
NELAP
Georgia (DW)
State
Hawaii
State
Illinois
NELAP
Iowa
State
Kansas
NELAP
Kentucky (UST)
State
Kentucky (WW)
State
Louisiana (All)
NELAP
Maine
State
Maryland
State
Massachusetts
State
Michigan
State
Minnesota
NELAP
Mississippi
State
Missouri
State
Montana (UST)
State
Nebraska
State
New Hampshire
NELAP
New Jersey
NELAP
New York
NELAP
North Carolina (DW)
State
North Carolina (WW/SW)
State
North Dakota
State
Oklahoma
NELAP
Oregon
NELAP
PALA
Canada
Pennsylvania
NELAP
South Carolina
State
Tennessee
State
Texas
NELAP
USDA
US Federal Programs
Vermont
State
Virginia
NELAP
Washington
State
West Virginia DEP
State
Wyoming
State
Wyoming (UST)
A21LA
* Accreditation/Certification renewal pending - accreditation/certification considered valid.
Job ID: 680-227879-2
Identification Number
Expiration Date
0001.01
11-30-24
0001.01
11-30-24
PA00009
06-30-23
17-027
02-28-23
AZ0780
03-12-23
88-00660
08-09-23
2792
11-30-22
PA00009
06-30-23
PH-0746
06-30-23
019-006(PA cert)
01-31-23
N/A
01-31-23
E87997
06-30-23
C048
01-31-23
N/A
01-31-23
200027
01-31-23
361
03-01-24
E-10151
10-31-23
0001.01
11-30-24
KY90088
12-31-23
02055
06-30-23
2019012
03-12-23
100
06-30-23
M-PA009
06-30-23
9930
01-31-23
042-999-487
12-31-23
022
01-31-23
450
01-31-25
<cert No.>
02-01-23
N E-OS-32-17
01-31-23
2730
01-10-23
PA011
06-30-23
10670
04-01-23
42705
07-31-23
521
12-31-23
R-205
01-31-23
R-205
08-31-23
PA200001
09-11-23
1978
09-16-24
36-00037
01-31-23
89002
01-31-23
02838
01-31-23
T104704194-22-45
08-31-23
P330-19-00197
08-09-23
VT - 36037
10-28-23
460182
06-14-23
C457
04-11-23
055
07-31-23
8TMS-L
01-31-23
0001.01
11-30-24
Eurofins Savannah
Page 15 of 15 1/6/2023