23-089-076_Bldg 407_ Asbestos Inspection.pdf

MONTANA | WASHINGTON | IDAHO | NORTH DAKOTA | PENNSYLVANIA

4 0 6 . 7 6 1 . 3 0 1 0 t d h e n g i n e e r i n g . c o m

1 8 0 0 R i v e r D r i v e N o r t h

G r e a t F a l l s , MT 5 9 4 0 1

August 8, 2023

Mr. Jared Grundhauser Malmstrom Air Force Base

341 CES/CEIS

Malmstrom AFB, MT 59402-7536

RE: PRE-RENOVATION ASBESTOS INSPECTION

BUILDING 407

MALMSTROM AIR FORCE BASE, MONTANA

TD&H ENGINEERING JOB NO. 23-089-076

Dear Mr. Grundhauser, TD&H Engineering, Inc. (TD&H) understands Malmstrom Air Force Base (MAFB) plans to replace the flooring in rooms 101, 104 and the hallway within Building 407. TD&H performed a limited pre-renovation asbestos inspection on July 27, 2023. This asbestos inspection report must be kept on site during all renovation activities.

ASBESTOS INSPECTION

The Administrative Rules of Montana (ARM) 17.74.354 require an asbestos inspection be completed for all building materials prior to scheduled renovation activities to determine if asbestos-containing materials (ACM) are present. ACM is defined as any material or product that contains more than 1% asbestos. The National Emissions Standards for Hazardous Air Pollutants [NESHAP – 40 Code of Federal Regulations (CFR) 61], the Occupational Safety and Health Administration (OSHA), and the ARM regulate asbestos due to the respiratory hazard that airborne asbestos fibers present. The inspection was performed by Ms. Thuy Anh Nguyen of TD&H, a technician Montana-accredited asbestos inspector, in accordance with the Environmental Protection Agency (EPA) – Asbestos Hazards and Emergency Response Act (AHERA) regulation 40 CFR 763. Documentation of accreditation is provided in Appendix A.

Building materials were identified, categorized, numbered, and placed into homogeneous areas (HAs) for sample collection and laboratory analysis. The number of samples collected from building materials identified during the inspection is based on the following:

• Surfacing Materials: At least three samples for surfacing materials that are 1,000 square feet (SF) or less, at least five samples for surfacing materials that are greater than 1,000 SF but less than or equal to 5,000 SF, and at least seven samples for surfacing materials that are greater than 5,000 SF.

• Thermal System Insulation: Three samples from each HA of thermal system insulation, which may include but is not limited to boiler insulation, mudded fittings, and expanded vermiculite insulation.

August 8, 2023 PAGE NO. 2 t d h e n g i n e e r i n g . c o m

• Miscellaneous Materials: Three samples from each HA of miscellaneous material, such as ceiling tile, wallboard system, cove base mastic, floor tile and mastic, concrete, roofing materials, and brick mortar.

• Materials Less Than Regulated Quantities: At least one sample from each HA of patching material, such as replacement floor tiles or patching plaster, and materials of less than 10 SF in total area, which are not subject to regulation by the Montana DEQ but may still trigger OSHA requirements.

A total of seven suspect building materials in building 407 were identified during the inspection. Bulk samples were collected from the building in accordance with the currently recognized standard protocol developed under AHERA. Bulk samples were placed into containers and shipped to Crisp Analytical LLC (CA Labs) in Baton Rouge, Louisiana, for analysis using Polarized Light Microscopy (PLM) in accordance with the EPA Method 600/R-93/116. CA Labs is accredited through the National Institute of Standards and Technology’s (NIST) National Voluntary Laboratory Accreditation Program (NVLAP). The point-counting technique employed by CA Labs in the analysis of these samples has a limit of detection of approximately 0.1% by volume on samples that contained asbestos at concentrations under 1%.

All samples collected during the inspection were determined to be non-asbestos containing and were listed in the report as “None Detected.” These HAs are shown in Table 1. The analytical report provided by CA Labs is provided in Appendix B, and sample locations are shown on Figure 1 in Appendix C.

Table 1 Non-Asbestos-Containing Building Materials

Building 407 MAFB, Montana

Homogenous Area (HA)

Sample Description Location-Room

F2.1 12”x12” Light Gray Vinyl Floor Tile

(VFT)

Rooms 101, 104, Hallway

M2.1 Tan Mastic Below F2.1 and F2.2 Rooms 101, 104, Hallway

F2.2 Light Blue VFT Rooms 101, 104, Hallway

M9.1 Orange Mastic Below F2.2 Rooms 101, 104

D1.1 White Leveling Compound Rooms 101, 104

M6.1 4” Gray Cove Base/ Tan Mastic Hallway

M6.2 4” Gray Cove Base/ White Mastic Rooms 101, 104, Hallway

RECOMMENDATIONS

Since none of the suspect materials were determined by laboratory analysis to be ACM, no further action is required regarding asbestos. Additional sampling may be necessary if site

August 8, 2023 PAGE NO. 3 t d h e n g i n e e r i n g . c o m activities expose other suspect materials or the scope of work changes to include suspect materials not described in this report.

LIMITATIONS

This asbestos inspection report was prepared based on information gathered during one site visit and interpretations of laboratory analytical results provided by CA Labs. The inspection report is intended to provide information concerning the various types of building materials that were considered suspected for containing asbestos and to inform MAFB of which building materials tested positive.

Additional suspect materials may be encountered during renovation activities. If work will disturb materials in addition to those included in this report, TD&H should be contacted and may need to be present during these activities.

This asbestos inspection report is intended for use by MAFB and their clients. The scope of services performed by TD&H Engineering may not be appropriate to satisfy the needs of other users, and any use or re-use of this document, or the findings presented herein, is at the sole risk of the user.

CLOSING

We appreciate this opportunity to provide these industrial hygiene-consulting services to you. Should you have questions or need further clarification about information contained herein, please feel free to contact us at (406) 761-3010.

Sincerely, Thuy Nguyen Corey League CHMM MTA-6185 Exp. 2024.03.15 MTA-5902 Exp. 2023.11.04 Industrial Hygiene Technician Project Manager

TD&H ENGINEERING TD&H ENGINEERING

APPENDICES: A DOCUMENTATION OF CERTIFICATIONS

B ASBESTOS LABORATORY REPORT

C ASBESTOS SAMPLE LOCATIONS

J:\2023\23-089 MAFB IH 2023\05_DESIGN (Tech & Reports)\INDUSTRIAL HYGIENE\076\23-089-076_Bldg 407_ Asbestos Inspection.docx

APPENDIX A

DOCUMENTATION OF

ACCREDITATION

has met the requirements of Montana Administrative Rule

17.74.362 and/or 17.74.363 for accreditation in the following asbestos occupation(s) through the specified expiration date(s).

THI ANH THUY NGUYEN

T H

I A

N H

T H

U Y

N G

U Y

E N

8T H

S T

R E

E T

N O

R T

H G

R E

A T

F A

L L

S M

T

MTA-6185

Asbestos Inspector 03/15/2024

MT DEQ Asbestos Control Program

APPENDIX B

ASBESTOS LABORATORY

REPORT

Attn:

Customer Project:

Reference #: Date: 8/3/2023

Analysis and Method

Discussion

Qualifications

CA Labs Dedicated to Quality

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Materials Characterization - Bulk Asbestos Analysis Laboratory Analysis Report - Polarized Light

TD & H Engineering Corey League 1800 River Drive North Great Falls, MT 59401

Building 407-MAFB

CBR23075909

Summary of polarizing light microscopy (PLM / Stereomicroscopy bulk asbestos analysis) using the methods described in 40CFR Part 763 Appendix E to Subpart E (Interim and EPA 600 / R-93 / 116 (Improved). The sample is first viewed with the aid of stereomicroscopy. Numerous liquid slide preparations are created for analysis under the polarized microscope where identifications and quantifications are preformed. Calibrated liquid refractive oils are used as liquid mouting medium. These oils are used for identification (dispersion staining). A calibrated visual estimation is reported, should any asbestiform mineral be present. Other techniques such as acid washing are used in conjugation with refractive oils for detection of smaller quantities of asbestos. All asbestos percentages are based on calibrated visual estimation traceable to NIST standards for regulated of asbestos. Traceability to measurement and calibration is achieved by using known amounts and types of asbestos from standards where analyst and laboratory accuracy are measured. As little as 0.001% asbestos can be detected in favorable samples, while detection in unfavorable samples may approach the detection limit of 0.50% (well above the laboratory definition of trace).

Vermiculite containing samples may have trace amounts of actinolite-tremolite, where not found be PLM should be analyzed using TEM methods and / or water separation techniques. Suspected actinolite/vermiculite presence will be indicated through the sample comment section of this report.

Fibrous talc containing samples may even contain a related asbestos fiber known as anthophyllite. Under certain conditions the same fiber may actually contain both talc and anthophyllite (a phenomenon called intergrowth). Again, TEM detection methods are recommended. CA Labs PLM report comments will denote suspected amounts of asbestiform anthophyllite with talc, where further analysis is recommended.

Some samples (floor tiles, surfacings, etc.) may contain fibers too small to be detectable by PLM analysis and should be analyzed by TEM bulk protocols.

A "trace asbestos" will be reported if the analyst observes far less than 1% asbestos. CA Labs defines "trace asbestos" as a few fibers detected by the analyst in several preparations and will indicate as such under these circumstances.

Quantification of <1% will actually be reported as <=1% (allowable variance close to 1% is high). Such results are ideal for point counting, and the technique is mandatory for friable samples (NESHAP, Nov. 1990 and clarification letter 8 May 1991) under 1% percent asbestos and the "trace asbestos". In order to make all initial PLM reports issued from CA Labs NESHAP compliant, all <1% asbestos results (except floor tiles) will be point counted at no additional charge.

CA Labs is accredited by the National Voluntary Accreditation Program (NVLAP) for selected test methods for airborne fiber analysis (TEM), and for bulk asbestos fiber analysis (PLM). All analysts have a college degree in a natural science (geology, biology, or environmental science) or are recognized by a state professional board in one these disciplines .Extensive in-house training programs are used to augment education background of the analyst. The group leader of polarized light has received supplemental McCrone Research training for asbestos identification. This report is not covered by the scope of AIHA accreditation. Analysis performed at CA Labs, LLC 12232 Industriplex, Suite 32 Baton Rouge, LA 70809.

Labs

A

C

Overview of Project Sample Material Containing Asbestos

Customer Project: Building 407-MAFB CA Labs Project #: CBR23075909

No Asbestos Detected.

Glossary of abbreviations (non-asbestos fibers and non-fibrous minerals):

CA Labs Dedicated to Quality

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Sample # Layer

Analysts Physical Description of Subsample

Asbestos type / calibrated visual estimate percent

List of Affected Building Material Types ca - carbonate gypsum - gypsum bi - binder or - organic ma - matrix mi - mica ve - vermiculite ot - other pe - perlite qu - quartz fg - fiberglass mw - mineral wool wo - wollastinite ta - talc sy - synthetic ce - cellulose br - brucite ka - kaolin (clay) pa - palygorskite (clay)

This report relates to the items tested. This report is not to be used by the customer to claim product certification, approval or endorsement by NVLAP, NIST, AIHA LAP, LLC, or any other agency of the federal government. This report may not be reproduced except in full without written permission from CA Labs. These results are submitted pursuant to CA Labs' current terms and sale, condition of sale, including the company's standard warranty and limitations of liability provisions and no responsibility or liability is assumed for the manner in which the results are used or interpreted. Unless notified in writing to return the samples covered by this report, CA Labs will store the samples for a period of ninety (90) days before discarding. A shipping or handling fee may be assessed for the return of any samples.

Labs

A

Polarized Light Asbestiform Materials Characterization

Customer Info: Attn: Customer Project:

8/3/2023 5 Days 7/28/2023

Phone # Fax # 23-089-075

Laboratory Director

Chris Williams

CA Labs Dedicated to Quality

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Corey League CA Labs Project #:

TD & H Engineering Building 407-MAFB CBR23075909 1800 River Drive North Great Falls, MT 59401 Date:

Turnaround Time: Samples Received:

406-761-3010 Date Of Sampling:

406-727-2872 Purchase Order #:

Sample # Com ment

Layer

Analysts Physical Description of Subsample

Homo-geneo us (Y/N)

Asbestos type / calibrated visual estimate percent

Non-asbestos fiber type / percent

Non-fibrous type / percent

F2.1A+M2.

1A

M2.1 A-1 Gray Floor Tile Y None Detected 100% qu, ca

M2.1 A-2 Tan Mastic Y None Detected 100% qu, bi

F2.1B+M2.

1B

M2.1 B-1 Gray Floor Tile Y None Detected 100% qu, ca

M2.1 B-2 Tan Mastic Y None Detected 100% qu, bi

F2.1C+M2.

1C

M2.1 C-1 Gray Floor Tile Y None Detected 100% qu, ca

M2.1 C-2 Tan Mastic Y None Detected 100% qu, bi

F2.1D+M2.

1D

M2.1 D-1 Gray Floor Tile Y None Detected 100% qu, ca

Analysis Method: Interim (40CFR Part 763 Appendix E to Subpart E) / Improved (EPA-600 / R-93/116) Preparation Method: HCL acid washing for carbonate based samples, chemical reduction for organically bound components, oil immersion for identification of asbestos types by dispersion attaining / becke line method.

ca - carbonate gypsum - gypsum bi - binder or - organic ma - matrix mi - mica ve - vermiculite ot -other pe - perlite qu - quartz fg - fiberglass mw - mineral wool wo - wollastinite ta - talc sy - synthetic ce - cellulose br - brucite ka - kaolin (clay) pa - palygorskite (clay) Approved Signatories:

David Darby Senior Analyst

Analyst Alicia Stretz

1. Fire Damage significant fiber damage - reported percentages reflect unaltered fibers

2. Fire Damage no significant fiber damages effecting fibrous percentages

3. Actinolite in association with Vermiculite

4. Layer not analyzed - attached to previous positive layer and contamination is suspected

5. Not enough sample to analyze

6. Anthophyllite in association with Fibrous Talc

7. Contamination suspected from other building materials

8. Favorable scenario for water separation on vermiculite for possible analysis by another method

9. < 1% Result point counted positive

10. TEM analysis suggested

Labs

A

8/3/2023 5 Days 7/28/2023

Phone # Fax # 23-089-075

Laboratory Director

Chris Williams

CA Labs Dedicated to Quality

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Corey League CA Labs Project #:

TD & H Engineering Building 407-MAFB CBR23075909 1800 River Drive North Great Falls, MT 59401 Date:

Turnaround Time: Samples Received:

406-761-3010 Date Of Sampling:

406-727-2872 Purchase Order #:

Sample # Com ment

Layer

Analysts Physical Description of Subsample

Homo-geneo us (Y/N)

Asbestos type / calibrated visual estimate percent

Non-asbestos fiber type / percent

Non-fibrous type / percent

M2.1 D-2 Tan Mastic Y None Detected 100% qu, bi

F2.1E+M2.

1E

M2.1 E-1 Gray Floor Tile Y None Detected 100% qu, ca

M2.1 E-2 Tan Mastic Y None Detected 100% qu, bi

F2.2A+M2.

1A+D1.1A

D1.1 A-1 Gray Floor Tile Y None Detected 100% qu, ca

D1.1 A-2 Tan Mastic Y None Detected 100% qu, bi

D1.1 A-3 White Leveling Compound Y None Detected 100% qu, ma, ca

F2.2B+M2.

1B

M2.1 B-1 Gray Floor Tile Y None Detected 100% qu, ca

Analysis Method: Interim (40CFR Part 763 Appendix E to Subpart E) / Improved (EPA-600 / R-93/116) Preparation Method: HCL acid washing for carbonate based samples, chemical reduction for organically bound components, oil immersion for identification of asbestos types by dispersion attaining / becke line method.

ca - carbonate gypsum - gypsum bi - binder or - organic ma - matrix mi - mica ve - vermiculite ot -other pe - perlite qu - quartz fg - fiberglass mw - mineral wool wo - wollastinite ta - talc sy - synthetic ce - cellulose br - brucite ka - kaolin (clay) pa - palygorskite (clay) Approved Signatories:

David Darby Senior Analyst

Analyst Alicia Stretz

1. Fire Damage significant fiber damage - reported percentages reflect unaltered fibers

2. Fire Damage no significant fiber damages effecting fibrous percentages

3. Actinolite in association with Vermiculite

4. Layer not analyzed - attached to previous positive layer and contamination is suspected

5. Not enough sample to analyze

6. Anthophyllite in association with Fibrous Talc

7. Contamination suspected from other building materials

8. Favorable scenario for water separation on vermiculite for possible analysis by another method

9. < 1% Result point counted positive

10. TEM analysis suggested

Labs

A

8/3/2023 5 Days 7/28/2023

Phone # Fax # 23-089-075

Laboratory Director

Chris Williams

CA Labs Dedicated to Quality

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Corey League CA Labs Project #:

TD & H Engineering Building 407-MAFB CBR23075909 1800 River Drive North Great Falls, MT 59401 Date:

Turnaround Time: Samples Received:

406-761-3010 Date Of Sampling:

406-727-2872 Purchase Order #:

Sample # Com ment

Layer

Analysts Physical Description of Subsample

Homo-geneo us (Y/N)

Asbestos type / calibrated visual estimate percent

Non-asbestos fiber type / percent

Non-fibrous type / percent

M2.1 B-2 Tan Mastic Y None Detected 100% qu, bi

M2.1 B-3 White Leveling Compound Y None Detected 100% qu, ma, ca

F2.2C+M2.

1C+D1.1B+ M9.1A

M9.1 A-1 Gray Floor Tile Y None Detected 100% qu, ca

M9.1 A-2 Tan Mastic Y None Detected 100% qu, bi

M9.1 A-3 White Leveling Compound Y None Detected 100% qu, ma, ca

M9.1 A-4 Orange Mastic Y None Detected 100% qu, bi

F2.2D+M2.

1D+D1.1C+ M9.1B

M9.1 B-1 Gray Floor Tile Y None Detected 100% qu, ca

Analysis Method: Interim (40CFR Part 763 Appendix E to Subpart E) / Improved (EPA-600 / R-93/116) Preparation Method: HCL acid washing for carbonate based samples, chemical reduction for organically bound components, oil immersion for identification of asbestos types by dispersion attaining / becke line method.

ca - carbonate gypsum - gypsum bi - binder or - organic ma - matrix mi - mica ve - vermiculite ot -other pe - perlite qu - quartz fg - fiberglass mw - mineral wool wo - wollastinite ta - talc sy - synthetic ce - cellulose br - brucite ka - kaolin (clay) pa - palygorskite (clay) Approved Signatories:

David Darby Senior Analyst

Analyst Alicia Stretz

1. Fire Damage significant fiber damage - reported percentages reflect unaltered fibers

2. Fire Damage no significant fiber damages effecting fibrous percentages

3. Actinolite in association with Vermiculite

4. Layer not analyzed - attached to previous positive layer and contamination is suspected

5. Not enough sample to analyze

6. Anthophyllite in association with Fibrous Talc

7. Contamination suspected from other building materials

8. Favorable scenario for water separation on vermiculite for possible analysis by another method

9. < 1% Result point counted positive

10. TEM analysis suggested

Labs

A

8/3/2023 5 Days 7/28/2023

Phone # Fax # 23-089-075

Laboratory Director

Chris Williams

CA Labs Dedicated to Quality

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Corey League CA Labs Project #:

TD & H Engineering Building 407-MAFB CBR23075909 1800 River Drive North Great Falls, MT 59401 Date:

Turnaround Time: Samples Received:

406-761-3010 Date Of Sampling:

406-727-2872 Purchase Order #:

Sample # Com ment

Layer

Analysts Physical Description of Subsample

Homo-geneo us (Y/N)

Asbestos type / calibrated visual estimate percent

Non-asbestos fiber type / percent

Non-fibrous type / percent

M9.1 B-2 Tan Mastic Y None Detected 100% qu, bi

M9.1 B-3 White Leveling Compound Y None Detected 100% qu, ma, ca

M9.1 B-4 Orange Mastic Y None Detected 100% qu, bi

F2.2E+M2.

1E

M2.1 E-1 Gray Floor Tile Y None Detected 100% qu, ca

M2.1 E-2 Tan Mastic Y None Detected 100% qu, bi

M6.1A M6.1 A-1 Gray Cove Base Y None Detected 100% qu, ma

M6.1 A-2 Tan Mastic Y None Detected 100% qu, bi

Analysis Method: Interim (40CFR Part 763 Appendix E to Subpart E) / Improved (EPA-600 / R-93/116) Preparation Method: HCL acid washing for carbonate based samples, chemical reduction for organically bound components, oil immersion for identification of asbestos types by dispersion attaining / becke line method.

ca - carbonate gypsum - gypsum bi - binder or - organic ma - matrix mi - mica ve - vermiculite ot -other pe - perlite qu - quartz fg - fiberglass mw - mineral wool wo - wollastinite ta - talc sy - synthetic ce - cellulose br - brucite ka - kaolin (clay) pa - palygorskite (clay) Approved Signatories:

David Darby Senior Analyst

Analyst Alicia Stretz

1. Fire Damage significant fiber damage - reported percentages reflect unaltered fibers

2. Fire Damage no significant fiber damages effecting fibrous percentages

3. Actinolite in association with Vermiculite

4. Layer not analyzed - attached to previous positive layer and contamination is suspected

5. Not enough sample to analyze

6. Anthophyllite in association with Fibrous Talc

7. Contamination suspected from other building materials

8. Favorable scenario for water separation on vermiculite for possible analysis by another method

9. < 1% Result point counted positive

10. TEM analysis suggested

Labs

A

8/3/2023 5 Days 7/28/2023

Phone # Fax # 23-089-075

Laboratory Director

Chris Williams

CA Labs Dedicated to Quality

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Corey League CA Labs Project #:

TD & H Engineering Building 407-MAFB CBR23075909 1800 River Drive North Great Falls, MT 59401 Date:

Turnaround Time: Samples Received:

406-761-3010 Date Of Sampling:

406-727-2872 Purchase Order #:

Sample # Com ment

Layer

Analysts Physical Description of Subsample

Homo-geneo us (Y/N)

Asbestos type / calibrated visual estimate percent

Non-asbestos fiber type / percent

Non-fibrous type / percent

M6.1B M6.1 B-1 Gray Cove Base Y None Detected 100% qu, ma

M6.1 B-2 Tan Mastic Y None Detected 100% qu, bi

M6.2A M6.2 A-1 Gray Cove Base Y None Detected 100% qu, ma

M6.2 A-2 Tan Mastic Y None Detected 100% qu, bi

M6.2B M6.2 B-1 Gray Cove Base Y None Detected 100% qu, ma

M6.2 B-2 Tan Mastic Y None Detected 100% qu, bi

M6.2C M6.2 C-1 Gray Cove Base Y None Detected 100% qu, ma

Analysis Method: Interim (40CFR Part 763 Appendix E to Subpart E) / Improved (EPA-600 / R-93/116) Preparation Method: HCL acid washing for carbonate based samples, chemical reduction for organically bound components, oil immersion for identification of asbestos types by dispersion attaining / becke line method.

ca - carbonate gypsum - gypsum bi - binder or - organic ma - matrix mi - mica ve - vermiculite ot -other pe - perlite qu - quartz fg - fiberglass mw - mineral wool wo - wollastinite ta - talc sy - synthetic ce - cellulose br - brucite ka - kaolin (clay) pa - palygorskite (clay) Approved Signatories:

David Darby Senior Analyst

Analyst Alicia Stretz

1. Fire Damage significant fiber damage - reported percentages reflect unaltered fibers

2. Fire Damage no significant fiber damages effecting fibrous percentages

3. Actinolite in association with Vermiculite

4. Layer not analyzed - attached to previous positive layer and contamination is suspected

5. Not enough sample to analyze

6. Anthophyllite in association with Fibrous Talc

7. Contamination suspected from other building materials

8. Favorable scenario for water separation on vermiculite for possible analysis by another method

9. < 1% Result point counted positive

10. TEM analysis suggested

Labs

A

8/3/2023 5 Days 7/28/2023

Phone # Fax # 23-089-075

Laboratory Director

Chris Williams

CA Labs Dedicated to Quality

CA Labs, L.L.C.

12232 Industriplex, Suite 32 Baton Rouge, LA 70809 Phone 225-751-5632 Fax 225-751-5634

NVLAP #200772-0

TDSHS #300370

CDPHE #AL-18111

LELAP #03069

Corey League CA Labs Project #:

TD & H Engineering Building 407-MAFB CBR23075909 1800 River Drive North Great Falls, MT 59401 Date:

Turnaround Time: Samples Received:

406-761-3010 Date Of Sampling:

406-727-2872 Purchase Order #:

Sample # Com ment

Layer

Analysts Physical Description of Subsample

Homo-geneo us (Y/N)

Asbestos type / calibrated visual estimate percent

Non-asbestos fiber type / percent

Non-fibrous type / percent

M6.2 C-2 Tan Mastic Y None Detected 100% qu, bi

Analysis Method: Interim (40CFR Part 763 Appendix E to Subpart E) / Improved (EPA-600 / R-93/116) Preparation Method: HCL acid washing for carbonate based samples, chemical reduction for organically bound components, oil immersion for identification of asbestos types by dispersion attaining / becke line method.

ca - carbonate gypsum - gypsum bi - binder or - organic ma - matrix mi - mica ve - vermiculite ot -other pe - perlite qu - quartz fg - fiberglass mw - mineral wool wo - wollastinite ta - talc sy - synthetic ce - cellulose br - brucite ka - kaolin (clay) pa - palygorskite (clay) Approved Signatories:

1. Fire Damage significant fiber damage - reported percentages reflect unaltered fibers

2. Fire Damage no significant fiber damages effecting fibrous percentages

3. Actinolite in association with Vermiculite

4. Layer not analyzed - attached to previous positive layer and contamination is suspected

5. Not enough sample to analyze

6. Anthophyllite in association with Fibrous Talc

7. Contamination suspected from other building materials

8. Favorable scenario for water separation on vermiculite for possible analysis by another method

9. < 1% Result point counted positive

10. TEM analysis suggested

David Darby Senior Analyst

Analyst Alicia Stretz

Labs

A

APPENDIX C

ASBESTOS SAMPLE

LOCATIONS

Asbestos-Containing Material

Non Asbestos-Containing Material

LEGEND

X0.0X

X0.0X

F2.1A +M2.1A

F2.2A +M2.1A +D1.1A

F2.1B +M2.1B

F2.2B +M2.1B

M6.1A

F2.1C +M2.1C

F2.2C+M2.1C +D1.1B+M9.1A

M6.2A

M6.1B

F2.1D +M2.1D

F2.2D+M2.1C +D1.1C+M9.1B

M6.2B

F2.1E +M2.1E

F2.2E +M2.1E

M6.2C

B u ild in g

M

A F

B

A s b e s to s S a m p le

L o ca ti o n s