ITB-2025-05_Locklin_Lake_Restoration-Maintenance_Dredge_-_Analytical_Report.pdf

ANALYTICAL REPORT

PREPARED FOR

Attn: Dillon Draughn

Baskerville-Donovan, Inc.

449 W. Main Street

Pensacola, Florida 32502 Generated 12/30/2024 4:34:40 PM

JOB DESCRIPTION

Locklin Lake Dredge Material Testing

JOB NUMBER

400-267973-1

See page two for job notes and contact information.

Pensacola FL 32514 3355 McLemore Drive Eurofins Pensacola https://eol.et.eurofinsus.com/myEOL/

Eurofins Pensacola

Eurofins Pensacola is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies

Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page.

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.

Authorization

Generated

12/30/2024 4:34:40 PM

Authorized for release by Isabel Enfinger, Project Manager I isabel.enfinger@et.eurofinsus.com (850)471-6237

Page 2 of 22 12/30/2024

Table of Contents

Client: Baskerville-Donovan, Inc.

Project/Site: Locklin Lake Dredge Material Testing

Laboratory Job ID: 400-267973-1

Eurofins Pensacola

12/30/2024

Cover Page

Table of Contents

Case Narrative

Detection Summary

Method Summary

Sample Summary

Client Sample Results

Definitions

QC Association

QC Sample Results

Chronicle

Certification Summary

Chain of Custody

Receipt Checklists

Job Narrative 400-267973-1

Receipt The samples were received on 12/16/2024 3:53 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 was 10.8º C.

Metals No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.

General Chemistry No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.

Organic Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.

Case Narrative Client: Baskerville-Donovan, Inc. Job ID: 400-267973-1 Project: Locklin Lake Dredge Material Testing

Eurofins Pensacola

Job ID: 400-267973-1 Eurofins Pensacola

Page 4 of 22 12/30/2024

Detection Summary Job ID: 400-267973-1Client: Baskerville-Donovan, Inc.

Project/Site: Locklin Lake Dredge Material Testing

Client Sample ID: DOGWOOD Lab Sample ID: 400-267973-1

Corrosivity

PQL

SU

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type

Total/NA16.0 9045D

Client Sample ID: PARK AVE Lab Sample ID: 400-267973-2

Corrosivity

PQL

SU

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type

Total/NA15.3 9045D

Client Sample ID: DAM Lab Sample ID: 400-267973-3

Corrosivity

PQL

SU

MDLAnalyte Result Qualifier Unit Dil Fac D Method Prep Type

Total/NA14.2 9045D

Eurofins Pensacola

This Detection Summary does not include radiochemical test results.

Page 5 of 22 12/30/2024

Method Summary

Project/Site: Locklin Lake Dredge Material Testing

Method Method Description LaboratoryProtocol

SW8466010D Metals (ICP) EET SAV

SW8467470A Mercury (CVAA) EET SAV

SW8469045D pH EET PEN

SW8461311 TCLP Extraction EET SAV

SW8463010A Preparation, Total Metals EET SAV

SW8467470A Preparation, Mercury EET SAV

Protocol References:

SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates.

Laboratory References:

EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001

EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL (912)354-7858

Eurofins Pensacola

Page 6 of 22 12/30/2024

Sample Summary Client: Baskerville-Donovan, Inc. Job ID: 400-267973-1 Project/Site: Locklin Lake Dredge Material Testing

Lab Sample ID Client Sample ID Matrix Collected Received

400-267973-1 DOGWOOD Solid 12/13/24 16:35 12/16/24 15:53

400-267973-2 PARK AVE Solid 12/13/24 16:43 12/16/24 15:53

400-267973-3 DAM Solid 12/13/24 16:50 12/16/24 15:53

Eurofins Pensacola Page 7 of 22 12/30/2024

Client Sample Results

Project/Site: Locklin Lake Dredge Material Testing

Lab Sample ID: 400-267973-1Client Sample ID: DOGWOOD Matrix: SolidDate Collected: 12/13/24 16:35

Date Received: 12/16/24 15:53

Method: SW846 6010D - Metals (ICP) - TCLP

PQL MDL

0.20 U 0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:04 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Arsenic

1.0 1.0 mg/L 12/27/24 11:25 12/30/24 13:04 11.0 UBarium

0.10 0.10 mg/L 12/27/24 11:25 12/30/24 13:04 10.10 UCadmium

0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:04 10.20 UChromium

0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:04 10.20 ULead

0.50 0.50 mg/L 12/27/24 11:25 12/30/24 13:04 10.50 USelenium

0.10 0.10 mg/L 12/27/24 11:25 12/30/24 13:04 10.10 USilver

Method: SW846 7470A - Mercury (CVAA) - TCLP

PQL MDL

0.020 U 0.020 0.020 mg/L 12/27/24 11:43 12/27/24 16:24 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Mercury

General Chemistry

PQL MDL

6.0 SU 12/18/24 13:28 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Corrosivity (SW846 9045D)

Eurofins Pensacola

Page 8 of 22 12/30/2024

Project/Site: Locklin Lake Dredge Material Testing

Lab Sample ID: 400-267973-2Client Sample ID: PARK AVE Matrix: SolidDate Collected: 12/13/24 16:43

Date Received: 12/16/24 15:53

Method: SW846 6010D - Metals (ICP) - TCLP

PQL MDL

0.20 U 0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:07 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Arsenic

1.0 1.0 mg/L 12/27/24 11:25 12/30/24 13:07 11.0 UBarium

0.10 0.10 mg/L 12/27/24 11:25 12/30/24 13:07 10.10 UCadmium

0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:07 10.20 UChromium

0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:07 10.20 ULead

0.50 0.50 mg/L 12/27/24 11:25 12/30/24 13:07 10.50 USelenium

0.10 0.10 mg/L 12/27/24 11:25 12/30/24 13:07 10.10 USilver

Method: SW846 7470A - Mercury (CVAA) - TCLP

PQL MDL

0.020 U 0.020 0.020 mg/L 12/27/24 11:43 12/27/24 16:26 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Mercury

General Chemistry

PQL MDL

5.3 SU 12/18/24 14:12 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Corrosivity (SW846 9045D)

Eurofins Pensacola

Page 9 of 22 12/30/2024

Project/Site: Locklin Lake Dredge Material Testing

Lab Sample ID: 400-267973-3Client Sample ID: DAM Matrix: SolidDate Collected: 12/13/24 16:50

Date Received: 12/16/24 15:53

Method: SW846 6010D - Metals (ICP) - TCLP

PQL MDL

0.20 U 0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:09 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Arsenic

1.0 1.0 mg/L 12/27/24 11:25 12/30/24 13:09 11.0 UBarium

0.10 0.10 mg/L 12/27/24 11:25 12/30/24 13:09 10.10 UCadmium

0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:09 10.20 UChromium

0.20 0.20 mg/L 12/27/24 11:25 12/30/24 13:09 10.20 ULead

0.50 0.50 mg/L 12/27/24 11:25 12/30/24 13:09 10.50 USelenium

0.10 0.10 mg/L 12/27/24 11:25 12/30/24 13:09 10.10 USilver

Method: SW846 7470A - Mercury (CVAA) - TCLP

PQL MDL

0.020 U 0.020 0.020 mg/L 12/27/24 11:43 12/27/24 16:32 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Mercury

General Chemistry

PQL MDL

4.2 SU 12/18/24 14:34 1

Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

Corrosivity (SW846 9045D)

Eurofins Pensacola

Page 10 of 22 12/30/2024

Definitions/Glossary

Project/Site: Locklin Lake Dredge Material Testing

Qualifiers

Metals Qualifier Description

U Indicates that the compound was analyzed for but not detected.

Qualifier

Glossary

These commonly used abbreviations may or may not be present in this report.

☼ Listed under the "D" column to designate that the result is reported on a dry weight basis

Abbreviation

%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

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

Eurofins Pensacola

Page 11 of 22 12/30/2024

QC Association Summary

Project/Site: Locklin Lake Dredge Material Testing

Metals

Leach Batch: 870449

Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch

Solid 1311400-267973-1 DOGWOOD TCLP

Solid 1311400-267973-2 PARK AVE TCLP

Solid 1311400-267973-3 DAM TCLP

Solid 1311LB 680-870449/1-C Method Blank TCLP

Solid 1311LB 680-870449/1-D Method Blank TCLP

Prep Batch: 870599

Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch

Solid 3010A 870449400-267973-1 DOGWOOD TCLP

Solid 3010A 870449400-267973-2 PARK AVE TCLP

Solid 3010A 870449400-267973-3 DAM TCLP

Solid 3010A 870449LB 680-870449/1-C Method Blank TCLP

Solid 3010AMB 680-870599/1-A Method Blank Total/NA

Solid 3010ALCS 680-870599/2-A Lab Control Sample Total/NA

Prep Batch: 870607

Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch

Solid 7470A 870449400-267973-1 DOGWOOD TCLP

Solid 7470A 870449400-267973-2 PARK AVE TCLP

Solid 7470A 870449400-267973-3 DAM TCLP

Solid 7470A 870449LB 680-870449/1-D Method Blank TCLP

Solid 7470AMB 680-870607/1-A Method Blank Total/NA

Solid 7470ALCS 680-870607/2-A Lab Control Sample Total/NA

Analysis Batch: 870666

Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch

Solid 7470A 870607400-267973-1 DOGWOOD TCLP

Solid 7470A 870607400-267973-2 PARK AVE TCLP

Solid 7470A 870607400-267973-3 DAM TCLP

Solid 7470A 870607LB 680-870449/1-D Method Blank TCLP

Solid 7470A 870607MB 680-870607/1-A Method Blank Total/NA

Solid 7470A 870607LCS 680-870607/2-A Lab Control Sample Total/NA

Analysis Batch: 870862

Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch

Solid 6010D 870599400-267973-1 DOGWOOD TCLP

Solid 6010D 870599400-267973-2 PARK AVE TCLP

Solid 6010D 870599400-267973-3 DAM TCLP

Solid 6010D 870599LB 680-870449/1-C Method Blank TCLP

Solid 6010D 870599MB 680-870599/1-A Method Blank Total/NA

Solid 6010D 870599LCS 680-870599/2-A Lab Control Sample Total/NA

General Chemistry

Analysis Batch: 694748

Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch

Solid 9045D400-267973-1 DOGWOOD Total/NA

Solid 9045D400-267973-2 PARK AVE Total/NA

Solid 9045D400-267973-3 DAM Total/NA

Solid 9045DLCS 400-694748/4 Lab Control Sample Total/NA

Solid 9045D400-267973-1 DU DOGWOOD Total/NA

Eurofins Pensacola

Page 12 of 22 12/30/2024

QC Sample Results

Project/Site: Locklin Lake Dredge Material Testing

Method: 6010D - Metals (ICP)

Client Sample ID: Method BlankLab Sample ID: MB 680-870599/1-A Matrix: Solid Prep Type: Total/NA Analysis Batch: 870862 Prep Batch: 870599

PQL MDL

Arsenic 0.020 U 0.020 0.020 mg/L 12/27/24 11:25 12/30/24 12:36 1

MB MB

Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier

0.10 U 0.100.10 mg/L 12/27/24 11:25 12/30/24 12:36 1Barium

0.010 U 0.0100.010 mg/L 12/27/24 11:25 12/30/24 12:36 1Cadmium

0.020 U 0.0200.020 mg/L 12/27/24 11:25 12/30/24 12:36 1Chromium

0.020 U 0.0200.020 mg/L 12/27/24 11:25 12/30/24 12:36 1Lead

0.050 U 0.0500.050 mg/L 12/27/24 11:25 12/30/24 12:36 1Selenium

0.010 U 0.0100.010 mg/L 12/27/24 11:25 12/30/24 12:36 1Silver

Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-870599/2-A Matrix: Solid Prep Type: Total/NA Analysis Batch: 870862 Prep Batch: 870599

Arsenic 0.200 0.187 mg/L 93 80 - 120

Analyte

LCS LCS

DUnitResult Qualifier %Rec

Spike

Added

%Rec

Limits

Barium 0.200 0.200 mg/L 100 80 - 120

Cadmium 0.100 0.100 mg/L 100 80 - 120

Chromium 0.200 0.202 mg/L 101 80 - 120

Lead 1.00 1.01 mg/L 101 80 - 120

Selenium 0.200 0.183 mg/L 92 80 - 120

Silver 0.100 0.0950 mg/L 95 80 - 120

Client Sample ID: Method BlankLab Sample ID: LB 680-870449/1-C Matrix: Solid Prep Type: TCLP Analysis Batch: 870862 Prep Batch: 870599

PQL MDL

Arsenic 0.20 U 0.20 0.20 mg/L 12/27/24 11:25 12/30/24 12:41 1

LB LB

Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier

1.0 U 1.01.0 mg/L 12/27/24 11:25 12/30/24 12:41 1Barium

0.10 U 0.100.10 mg/L 12/27/24 11:25 12/30/24 12:41 1Cadmium

0.20 U 0.200.20 mg/L 12/27/24 11:25 12/30/24 12:41 1Chromium

0.20 U 0.200.20 mg/L 12/27/24 11:25 12/30/24 12:41 1Lead

0.50 U 0.500.50 mg/L 12/27/24 11:25 12/30/24 12:41 1Selenium

0.10 U 0.100.10 mg/L 12/27/24 11:25 12/30/24 12:41 1Silver

Method: 7470A - Mercury (CVAA)

Client Sample ID: Method BlankLab Sample ID: MB 680-870607/1-A Matrix: Solid Prep Type: Total/NA Analysis Batch: 870666 Prep Batch: 870607

PQL MDL

Mercury 0.00020 U 0.00020 0.00020 mg/L 12/27/24 11:43 12/27/24 15:59 1

MB MB

Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier

Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-870607/2-A Matrix: Solid Prep Type: Total/NA Analysis Batch: 870666 Prep Batch: 870607

Mercury 0.00250 0.00271 mg/L 109 80 - 120

Analyte

LCS LCS

DUnitResult Qualifier %Rec

Spike

Added

%Rec

Limits

Eurofins Pensacola

Page 13 of 22 12/30/2024

QC Sample Results

Project/Site: Locklin Lake Dredge Material Testing

Method: 7470A - Mercury (CVAA) (Continued)

Client Sample ID: Method BlankLab Sample ID: LB 680-870449/1-D Matrix: Solid Prep Type: TCLP Analysis Batch: 870666 Prep Batch: 870607

PQL MDL

Mercury 0.020 U 0.020 0.020 mg/L 12/27/24 11:43 12/27/24 16:07 1

LB LB

Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier

Method: 9045D - pH

Client Sample ID: DOGWOODLab Sample ID: 400-267973-1 DU Matrix: Solid Prep Type: Total/NA Analysis Batch: 694748

Corrosivity 6.0 6.1 SU 2 30

Analyte

DU DU

DUnitResult Qualifier

Sample

Result

Sample

Qualifier LimitRPD

RPD

Eurofins Pensacola

Page 14 of 22 12/30/2024

Lab Chronicle

Project/Site: Locklin Lake Dredge Material Testing

Client Sample ID: DOGWOOD Lab Sample ID: 400-267973-1 Matrix: SolidDate Collected: 12/13/24 16:35

Date Received: 12/16/24 15:53

Leach 1311 KC12/26/24 14:52 EET SAV870449

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

TCLP 50.05 g 1000 mL

Prep 3010A 870599 12/27/24 11:25 RR EET SAVTCLP 2.5 mL 25 mL

Analysis 6010D 1 870862 12/30/24 13:04 BCB EET SAVTCLP

Leach 1311 870449 12/26/24 14:52 KC EET SAVTCLP 50.05 g 1000 mL

Prep 7470A 870607 12/27/24 11:43 MG EET SAVTCLP 0.5 mL 50 mL

Analysis 7470A 1 870666 12/27/24 16:24 BCB EET SAVTCLP

Analysis 9045D 1 694748 12/18/24 13:28 JP EET PENTotal/NA 20 g 20 mL

Client Sample ID: PARK AVE Lab Sample ID: 400-267973-2 Matrix: SolidDate Collected: 12/13/24 16:43

Date Received: 12/16/24 15:53

Leach 1311 KC12/26/24 14:52 EET SAV870449

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

TCLP 50.02 g 1000 mL

Prep 3010A 870599 12/27/24 11:25 RR EET SAVTCLP 2.5 mL 25 mL

Analysis 6010D 1 870862 12/30/24 13:07 BCB EET SAVTCLP

Leach 1311 870449 12/26/24 14:52 KC EET SAVTCLP 50.02 g 1000 mL

Prep 7470A 870607 12/27/24 11:43 MG EET SAVTCLP 0.5 mL 50 mL

Analysis 7470A 1 870666 12/27/24 16:26 BCB EET SAVTCLP

Analysis 9045D 1 694748 12/18/24 14:12 JP EET PENTotal/NA 20 g 20 mL

Client Sample ID: DAM Lab Sample ID: 400-267973-3 Matrix: SolidDate Collected: 12/13/24 16:50

Date Received: 12/16/24 15:53

Leach 1311 KC12/26/24 14:52 EET SAV870449

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

TCLP 50.03 g 1000 mL

Prep 3010A 870599 12/27/24 11:25 RR EET SAVTCLP 2.5 mL 25 mL

Analysis 6010D 1 870862 12/30/24 13:09 BCB EET SAVTCLP

Leach 1311 870449 12/26/24 14:52 KC EET SAVTCLP 50.03 g 1000 mL

Prep 7470A 870607 12/27/24 11:43 MG EET SAVTCLP 0.5 mL 50 mL

Analysis 7470A 1 870666 12/27/24 16:32 BCB EET SAVTCLP

Analysis 9045D 1 694748 12/18/24 14:34 JP EET PENTotal/NA 20 g 20 mL

Client Sample ID: Method Blank Lab Sample ID: LB 680-870449/1-C Matrix: SolidDate Collected: N/A

Date Received: N/A

Leach 1311 KC12/26/24 14:52 EET SAV870449

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

TCLP 1.0 g 2000 mL

Prep 3010A 870599 12/27/24 11:25 RR EET SAVTCLP 2.5 mL 25 mL

Analysis 6010D 1 870862 12/30/24 12:41 BCB EET SAVTCLP

Eurofins Pensacola

Page 15 of 22 12/30/2024

Project/Site: Locklin Lake Dredge Material Testing

Client Sample ID: Method Blank Lab Sample ID: LB 680-870449/1-D Matrix: SolidDate Collected: N/A

Date Received: N/A

Leach 1311 KC12/26/24 14:52 EET SAV870449

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

TCLP 1.0 g 2000 mL

Prep 7470A 870607 12/27/24 11:43 MG EET SAVTCLP 0.5 mL 50 mL

Analysis 7470A 1 870666 12/27/24 16:07 BCB EET SAVTCLP

Client Sample ID: Method Blank Lab Sample ID: MB 680-870599/1-A Matrix: SolidDate Collected: N/A

Date Received: N/A

Prep 3010A RR12/27/24 11:25 EET SAV870599

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

Total/NA 25 mL 25 mL

Analysis 6010D 1 870862 12/30/24 12:36 BCB EET SAVTotal/NA

Client Sample ID: Method Blank Lab Sample ID: MB 680-870607/1-A Matrix: SolidDate Collected: N/A

Date Received: N/A

Prep 7470A MG12/27/24 11:43 EET SAV870607

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

Total/NA 50 mL 50 mL

Analysis 7470A 1 870666 12/27/24 15:59 BCB EET SAVTotal/NA

Client Sample ID: Lab Control Sample Lab Sample ID: LCS 400-694748/4 Matrix: SolidDate Collected: N/A

Date Received: N/A

Analysis 9045D JP12/18/24 13:061 EET PEN694748

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

Total/NA

Client Sample ID: Lab Control Sample Lab Sample ID: LCS 680-870599/2-A Matrix: SolidDate Collected: N/A

Date Received: N/A

Prep 3010A RR12/27/24 11:25 EET SAV870599

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

Total/NA 25 mL 25 mL

Analysis 6010D 1 870862 12/30/24 12:38 BCB EET SAVTotal/NA

Client Sample ID: Lab Control Sample Lab Sample ID: LCS 680-870607/2-A Matrix: SolidDate Collected: N/A

Date Received: N/A

Prep 7470A MG12/27/24 11:43 EET SAV870607

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

Total/NA 50 mL 50 mL

Analysis 7470A 1 870666 12/27/24 16:01 BCB EET SAVTotal/NA

Eurofins Pensacola

Page 16 of 22 12/30/2024

Project/Site: Locklin Lake Dredge Material Testing

Client Sample ID: DOGWOOD Lab Sample ID: 400-267973-1 DU Matrix: SolidDate Collected: 12/13/24 16:35

Date Received: 12/16/24 15:53

Analysis 9045D JP12/18/24 13:501 EET PEN694748

Type

Batch

Method

Batch

Prep Type LabAnalystRun

Prepared or Analyzed

Initial

Amount Amount

Final Batch

NumberFactor

Dil

Total/NA 20 g 20 mL

Laboratory References:

EET PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001

EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL (912)354-7858

Eurofins Pensacola

Page 17 of 22 12/30/2024

Accreditation/Certification Summary

Project/Site: Locklin Lake Dredge Material Testing

Laboratory: Eurofins Pensacola Unless otherwise noted, all analytes for this laboratory were covered under each accreditation/certification below.

Authority Program Identification Number Expiration Date

Florida NELAP E81010 06-30-25

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

9045D Solid Corrosivity

Laboratory: Eurofins Savannah Unless otherwise noted, all analytes for this laboratory were covered under each accreditation/certification below.

Authority Program Identification Number Expiration Date

Florida NELAP E87052 06-30-25

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

7470A 7470A Solid Mercury

Eurofins Pensacola

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Login Sample Receipt Checklist

Client: Baskerville-Donovan, Inc. Job Number: 400-267973-1

Login Number: 267973

Question Answer Comment

Creator: Beecher (Roberts), Alexis J

List Source: Eurofins Pensacola

List Number: 1

N/ARadioactivity wasn't checked or is </= background as measured by a survey meter.

N/AThe cooler's custody seal, if present, is intact.

N/ASample custody seals, if present, are intact.

TrueThe cooler or samples do not appear to have been compromised or tampered with.

TrueSamples were received on ice. Thermal preservation not required.

TrueCooler Temperature is acceptable.

TrueCooler Temperature is recorded. 10.8°C IR8

TrueCOC is present.

TrueCOC is filled out in ink and legible.

TrueCOC is filled out with all pertinent information.

TrueIs the Field Sampler's name present on COC?

TrueThere are no discrepancies between the containers received and the COC. NO ID on containes

TrueSamples are received within Holding Time (excluding tests with immediate HTs)

TrueSample containers have legible labels.

TrueContainers are not broken or leaking.

TrueSample collection date/times are provided.

TrueAppropriate sample containers are used.

TrueSample bottles are completely filled.

N/ASample Preservation Verified.

TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs

N/AContainers requiring zero headspace have no headspace or bubble is <6mm (1/4").

TrueMultiphasic samples are not present.

TrueSamples do not require splitting or compositing.

N/AResidual Chlorine Checked.

Eurofins Pensacola Page 21 of 22 12/30/2024

Login Sample Receipt Checklist

Client: Baskerville-Donovan, Inc. Job Number: 400-267973-1

Login Number: 267973

Question Answer Comment

Creator: Lincoln, Alyssa

List Source: Eurofins Savannah

List Creation: 12/19/24 02:18 PMList Number: 2

N/ARadioactivity wasn't checked or is </= background as measured by a survey meter.

TrueThe cooler's custody seal, if present, is intact.

TrueSample custody seals, if present, are intact.

TrueThe cooler or samples do not appear to have been compromised or tampered with.

TrueSamples were received on ice.

TrueCooler Temperature is acceptable.

TrueCooler Temperature is recorded.

TrueCOC is present.

TrueCOC is filled out in ink and legible.

TrueCOC is filled out with all pertinent information.

TrueIs the Field Sampler's name present on COC?

TrueThere are no discrepancies between the containers received and the COC.

TrueSamples are received within Holding Time (excluding tests with immediate HTs)

TrueSample containers have legible labels.

TrueContainers are not broken or leaking.

TrueSample collection date/times are provided.

TrueAppropriate sample containers are used.

TrueSample bottles are completely filled.

N/ASample Preservation Verified.

TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs

N/AContainers requiring zero headspace have no headspace or bubble is <6mm (1/4").

TrueMultiphasic samples are not present.

TrueSamples do not require splitting or compositing.

N/AResidual Chlorine Checked.

Eurofins Pensacola Page 22 of 22 12/30/2024