25-0087 LeadAsbestosReport.pdf

Lead Survey FC444 Aluminum Sulfate Tank Repairs

MCB Camp Lejeune

Lead Paint Survey

Project # 25-0087

Report Prepared By:

Christopher B. Walker The Walker Group Architecture, Inc

June 10th, 2026 WGA Project No. – 2609.SUFL

Project Information

The Walker Group Architecture, Inc. was contracted by NRW Engineering to conduct a lead sampling survey for FC444 Aluminum Sulfate Tank repairs project. The specified structure is slated for demolition and replacement of the tank and associated piping. The survey was conducted to determine if building components were coated with lead-based paint.

Scope of Services

A. The survey was performed on 04/30/2026 by Christopher B. Walker (NC Accredited Lead Inspector #110239 expires August 31st, 2026. Samples were collected from areas defined by the scope of work.

Findings

A. The Walker Group Architecture collected paint chip samples from each surface visibly coated with a different color of paint and delivered them to EMSL Analytical, Inc. (AIHA ELLAP lab code no. 102564) for analysis for lead content by Flame AAS (SW 846 3050B*/7420) in accordance with EPA 3050B/Modified/7000B. OSHA 29 CFR

1926.62 defines any detectable level of lead in paint a concern when renovations/demolitions will impact lead coated surfaces.

B. The detection limit is determined by weight of the sample, which is typically 0.01%.

See attached Lab Results for additional information.

Building Description and Findings

FC444 Aluminum Sulfate Tank is a large fiberglass tank supported on a concrete pad. The tank has several appurtenances and sets of piping that route around the tank enclosure pit and penetrate the concrete pit walls.

Laboratory Results

Suspect Material Sampled Location Condition Concentration

% by Weight White Fiberglass Tank Sulfate Tank Coating Intact <0.0064%

Based on the sample analysis, none of the sampled coatings were found to contain Lead Based Paint.

MCB Camp Lejeune

Recommendations

A. Any demolition/renovation work in which lead coated surfaces are disturbed must be in compliance with all Federal, State, and Local regulations. All work should be conducted by workers trained in "lead safe practices" as outlined by

OSHA.

B. If additional suspect materials are discovered during demolition/renovation, they should be classified presumed to contain lead-based paint until sampling by a state of North Carolina licensed Lead Inspector personnel and analysis by an Accredited and state of North Carolina licensed laboratory can be performed.

See attached for Plan Locations, Lead Laboratory Results, and Chain of Custody.

If further information is required, please contact me at 1-252-636-8778

Report Prepared by:

North Carolina Lead Inspector Accreditation# 110239 The Walker Group Architecture, Inc.

PO Box 541 New Bern, NC 28560

Lead Interpretive Report

Analyte Analyzed Method Reporting

Limit

IndicatorResultsUnits

EMSL Analytical, Inc.

706 Gralin Street, Kernersville, NC, 27284

Telephone: (336)-992-1025 Fax:(336)-992-4175

Attention: Chris Walker

The Walker Group Architecture [WALK85]

PO Box 541

New Bern, NC 28563

(252) 636-8778 chris@wgarc.com

EMSL Sales Rep:

Project Name:

Customer PO:

Reported:

Received:

Project ID:

FC444 Aluminum Sulfate Tank Repairs

02-WALK85-LEAD

Jason McDonald

5/4/26 13:00

05/07/26 07:38

EMSL Order ID: 022650361

LIMS Reference ID: KE50361

EMSL Customer ID: WALK85

Weight(g) Q

Collected: 04/30/26 00:00Customer Sample ID: Pb01 Lab Sample ID: KE50361-01

0.0064Lead SW 846-7000B05/06/26 08:16

Site:

% wt <0.00640.253

Collected: 04/30/26 00:00Customer Sample ID: Pb02 Lab Sample ID: KE50361-02

0.0064Lead SW 846-7000B05/06/26 08:17

Site:

% wt <0.00640.2607

Above action level Above Reporting Limit (RL) but below action level

These guidance limits are typically used in most scenarios. Other local or project specific guidelines may apply.

Please contact the laboratory for statement of uncertainty data for the utility of properly evaluating these results against any regulatory standards or guidelines.

No responsibility or liability is assumed for the manner in which the results are used or interpreted.

Below Reporting Limit (RL)

Interpretation Key and Definitions

Guidelines for Federal USEPA/HUD Lead in Paint Chips

=0.5 % Wt or =1.0 mg/cm2 is the EPA definition of a lead-based paint.

James Cole, Laboratory Manager or other approved signatory

Page 1 of 3Printed: 5/7/2026 7:39:03AMRev 5/7/2026

Please visit our website at http://www.emsl.com

(c) 2023 EMSL Analytical, Inc. All rights reserved. No part of this report may be reproduced or otherwise distributed or used without the expressed written consent of EMSL.

CertificationsAnalyte

Certified Analyses included in this Report

SW 846-7000B in Chips

02-AIHA ELLAPLead

List of Certifications

Code Description Number Expires

02-AIHA ELLAP 102564American Industrial Hygiene Association (AIHA LAP, LLC) - ELLAP 06/01/2026

02-AIHA EMLAP 102564American Industrial Hygiene Association (AIHA LAP, LLC) - EMLAP 06/01/2026

Please see the specific Field of Testing (FOT) on www.emsl.com <http://www.emsl.com> for a complete listing of parameters for which EMSL is certified.

Notes and Definitions

Item Definition

(Dig) For metals analysis, sample was digested.

[2C] Reported from the second channel in dual column analysis.

DA Direct Analysis

DF Dilution Factor

MDL Method Detection Limit.

ND Analyte was NOT DETECTED at or above the reporting limit, or the mdl if provided.

NR Spike/Surrogate showed no recovery.

Q Qualifier

RCS Respirable Crystalline Silica

RL Reporting Limit

Wet Sample is not dry weight corrected.

Measurement of uncertainty and any applicable definitions of method modifications are available upon request. Per EPA NLLAP policy, sample results are not blank corrected.

Page 2 of 3Printed: 5/7/2026 7:39:03AMRev 5/7/2026

Please visit our website at http://www.emsl.com

(c) 2023 EMSL Analytical, Inc. All rights reserved. No part of this report may be reproduced or otherwise distributed or used without the expressed written consent of EMSL.

Asbestos Survey

Project # 25-0087

Report Prepared By:

The Walker Group Architecture, Inc

June 10th, 2026 WGA Project No. – 2609.SUFL

Project Information

The Walker Group Architecture, Inc. was contracted by NRW Engineering to conduct an asbestos sampling survey for FC444 Aluminum Sulfate Tank repairs project. The specified structure is slated for demolition and replacement of the tank and associated piping. An asbestos survey has been requested prior to disturbance of any potential asbestos containing materials (ACM).

Scope of Services

A. The survey was performed on 04/30/2026 by Christopher B. Walker (NC Accredited Inspector #12878, expires June, 2026). The sampling was conducted in general accordance with the U.S. Environmental Protection Agency (EPA) requirements as defined in the asbestos Hazards Emergency Response Act (40 CFR Part 763) guidelines (AHERA) and in general accordance with the North Carolina Health Hazards Control Unit

(NCHHCU).

B. The survey was conducted to identify the presence of asbestos containing materials (ACM) prior to repairs to the building.

C. The building was assessed to determine homogenous areas (groups of materials appearing to have been installed in the same general time period and uniform in color and texture).

D. As per AHERA, sufficient samples were collected from random locations of each homogenous area, with the number of samples based on the following criteria:

a. Thermal Insulation Materials (piping, breeching, boiler insulation, etc.) – A minimum of (3) samples are required. Patch areas (less than 6 square or liner feet) may have (2) sample collected.

b. Surfacing Materials (plaster, fireproofing, etc.) – A minimum of (7) samples are to be taken for areas greater than 5,000 square feet, five (5) samples for areas greater than 1,000 square feet, but less than 5,000 square feet, three (3) samples for areas less than 1,000 square feet, two (2) samples for patching materials.

c. Miscellaneous Materials (flooring, adhesives, roofing, wallboard, etc.) – A minimum of (2) samples are required.

If any one sample of a material from a homogenous area is found to be positive, then that material is considered positive, regardless of results of other samples of that material, within that area.

Samples

A. The Walker Group Architecture collected suspect samples and shipped them to EMSL Analytical, Inc. (NVLAP Accredited Laboratory 102104-0) for PLM (polarized Light Microscopy) analysis. In an effort to reduce cost, the Walker Group instructed the laboratory to Stop Analysis at the first positive sample for each suspect material HGA and not to analyze the remaining samples from the same HGA.

Building Description and Findings

FC444 Aluminum Sulfate Tank is a large fiberglass tank supported on a concrete pad. The tanks has several appurtenances and sets of piping that route around the tank enclosure pit and penetrate the concrete pit walls.

A. Laboratory Results

Material Material

Type Location Friability Laboratory Result Approx.Quantity

Miscellaneous Sealant Misc Pipe penetrations at concrete wall

NF Non-Detected N/A

Concrete Textured Coating Surfacing Concrete pit and slab coating

NF Non-Detected N/A

Based on the sample lab analysis none of the materials sampled were found to be Asbestos Containing Materials.

Disposal

A. In accordance with the NCHHCU regulations, asbestos containing materials (ACM) waste should be taken to an approved landfill. All demolition/renovation work must be performed in accordance with NESHAP asbestos regulations, 40CFR61, Subpart M, and OSHA Regulations 29 CFR 1926.1101. Any disturbance should be conducted in accordance with federal, state, and local regulations.

Recommendations

A. Any demolition/renovation work in which ACM is disturbed must be in compliance with, EPA, OSHA and the state of North Carolina regulations. Abatement work shall be conducted by NC Accredited asbestos workers under the supervision of a NC accredited asbestos supervisor. The contractor conducting asbestos abatement activities must notify the North Carolina Department of Health and Human Services (HHS) ten (10) days prior to the disturbance of ACM if it is friable and greater than or equal to 160 square feet, 260 linear feet or 35 cubic feet.

B. If additional suspect materials are discovered during demolition/renovation, they should be classified presumed to be asbestos-containing until sampling by a state of North Carolina licensed Asbestos Building Inspector personnel and analysis by a NVLAP-Accredited and state of North Carolina licensed laboratory can be performed.

MCB Camp Lejeune

See attached for Accreditations, Asbestos Lab Results and Chain of Custody. If further information is required, please contact me at 1-252-636-8778

Report Prepared by:

Christopher B. Walker, AIA North Carolina Asbestos Inspector Accreditation# 12878 The Walker Group Architecture, Inc., PO Box 541, New Bern, NC 28560

EMSL Analytical, Inc.

706 Gralin Street Kernersville, NC 27284

Tel/Fax: (336) 992-1025 / (336) 992-4175 http://www.EMSL.com / kernersvillelab@emsl.com

022601777EMSL Order:

Customer ID: WALK85

Customer PO:

Project ID:

Attention: Phone:Chris Walker (252) 636-8778

Fax:The Walker Group Architecture (252) 636-8992

Received Date:PO Box 541 05/04/2026 1:00 PM

Analysis Date:New Bern, NC 28563 05/04/2026

Collected Date:

Project: FC444 Aluminium Sulfate Tank Repairs

Test Report: Asbestos Analysis of Bulk Materials via AHERA Method 40CFR 763 Subpart E

Appendix E supplemented with EPA 600/R-93/116 using Polarized Light Microscopy

Sample Description Appearance % Fibrous % Non-Fibrous

Non-Asbestos Asbestos

% Type

022601777-0001

None DetectedNon-fibrous (Other)100%Cellulose

Synthetic

Glass

<1%

<1%

<1%

Gray/Silver

Non-Fibrous

Homogeneous misc. sealant

022601777-0002

None DetectedNon-fibrous (Other)100%Silver

Non-Fibrous

Homogeneous misc. sealant

022601777-0003

None DetectedCa Carbonate

Non-fibrous (Other)

10%

88%

Cellulose

Synthetic

Glass

Hair

2%

<1%

<1%

<1%

Tan/White/Yellow

Non-Fibrous

Heterogeneous concrete textured coating

022601777-0004

None DetectedCa Carbonate

Non-fibrous (Other)

10%

88%

Cellulose

Synthetic

Glass

2%

<1%

<1%

Tan/White/Yellow

Non-Fibrous

Heterogeneous concrete textured coating

022601777-0005

None DetectedCa Carbonate

Non-fibrous (Other)

5%

93%

Glass2%White

Non-Fibrous

Heterogeneous concrete textured coating

Analyst(s)

Bobby Wheatley (2)

Scott Combs (3)

Stephen Bennett, Laboratory Manager or Other Approved Signatory

EMSL maintains liability limited to cost of analysis. Interpretation and use of test results are the responsibility of the client. This report relates only to the samples reported above, and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. The report reflects the samples as received.

Results are generated from the field sampling data (sampling volumes and areas, locations, etc.) provided by the client on the Chain of Custody. Samples are within quality control criteria and met method specifications unless otherwise noted. The above analyses were performed in general compliance with Appendix E to Subpart E of 40 CFR (previously EPA 600/M4-82-020 “Interim Method”) but augmented with procedures outlined in the 1993 (”final”) version of the method. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the federal government. Non-friable organically bound materials present a problem matrix and therefore EMSL recommends gravimetric reduction prior to analysis. Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Estimation of uncertainty is available on request.

Samples analyzed by EMSL Analytical, Inc. Kernersville, NC NVLAP Lab Code 102104-0, Virginia 3333-000228, West Virginia LT000321

Initial report from: 05/06/2026 14:44:42

Page 1 of 1ASB_PLM_0008_0002 - 2.31 Printed: 5/6/2026 2:44 PM

OrderID: 022601777