9-Attachement 9 Asbestos Report.pdf

Limited Asbestos Survey

Conducted for:

Texas Workforce Commission Trinity Building Cooling Tower and Chiller Renovations 1117 Trinity Street Austin, Travis County, Texas

Prepared for:

Texas Workforce Commission Construction & Facilities Management 101 E. 15th Street, Room 116 Austin, Travis County, Texas

Prepared by:

August 2025

AVO 52249.038

August 6, 2025

AVO 52249.038

Mr. William Briseno, MBA, CTCD, CTCM Project Manager II Texas Workforce Commission Construction & Facilities Management 101 E. 15th Street, Room 116 Austin, TX 78778-0001

Re: Limited Asbestos Survey for the Proposed Cooling Tower and Chiller Renovations at the Texas Workforce Commission – Trinity Building, addressed 1117 Trinity Street, Austin, Texas

Dear Mr. Briseno:

Halff Associates Inc. (Halff) performed a limited asbestos survey for the proposed cooling tower and chiller renovation project at the above-referenced building. The limited asbestos survey was conducted on July 17, 2025.

According to information provided by the Texas Workforce Commission (TWC) personnel, the general scope of work for the cooling tower and chiller renovation project included replacement of the 5th Floor Mechanical Room chillers, roof-top cooling tower, and associated mechanical system piping. Therefore, suspect building materials that have a potential to be disturbed during the proposed project were sampled as part of this limited survey.

Suspect building materials that could potentially be impacted during the project included mastics, exterior plaster and lath wall system, chiller compressor insulation blankets, pipe flange gaskets, a fan vibration damper, and pipe insulation consisting of mastic on paper/foil wrapped fiberglass or foam. Materials not sampled based on previous asbestos surveys conducted by Halff in May 2023, included the interior drywall system of the 5th

Floor Mechanical Room.

Because asbestos has historically been a component of a wide variety of building materials, the types of building materials, which may potentially contain asbestos, are termed “suspect ACM.” The actual asbestos content, if any, of suspect ACM can be determined only through proper sampling and analytical procedures performed by qualified asbestos inspector and laboratory.

Additionally, at present in the State of Texas, only materials with an asbestos content greater than 1% (1% or greater in a Public Building) are considered regulated asbestos containing material (RACM).

Mr. William Briseno Texas Workforce Commission

August 6, 2025

Asbestos Survey

Halff is licensed by the Texas Department of State Health Services (DSHS) as an Asbestos Consulting Agency (DSHS License #100386). Mr. Michael Thiele (DSHS Asbestos Consultant #105780) assessed readily accessible building materials located in the identified areas of proposed renovation activities. Halff collected a total of thirty-nine bulk samples of suspect building materials. Bulk samples of the suspect building materials were obtained and placed in individual sample bags labeled with a unique number.

The samples were transported to Cates Laboratories in Dallas, Texas for analysis. Cates Laboratories is a successful participant in the Department of Commerce, National Institute of Standards and Technology, National Voluntary Laboratory Accreditation Program (NVLAP, Lab ID# 200569). Cates Laboratories is also licensed by the DSHS as an Asbestos laboratory (DSHS License # 30-0287). The samples were analyzed by Cates Laboratories using Polarized Light Microscopy (PLM).

The limited asbestos survey identified thirteen homogenous areas and yielded a collection of thirty-nine bulk samples. Based on laboratory analysis, asbestos was not identified in the samples collected from the suspect building materials as part of this survey.

The sample locations are illustrated on Figure 1. Summary of homogeneous materials and bulk sample analysis tables, a sample location map, chain of custody, laboratory report, photographs, and licenses/certifications are presented as attachments at the end of this report.

This limited asbestos survey was intended to provide bulk sampling for suspect ACM in the area of proposed renovation associated with the cooling tower and chiller at the facility. This survey was not intended to satisfy EPA guidelines in the Asbestos Hazard Emergency Response Act (AHERA) codified in 40 CFR Part 763 but was intended to provide general information concerning the presence of ACM associated with the areas identified in this report. The regulations covering this project may be found in 40 CFR PART 61 Subpart M:

National Emission Standards for Hazardous air Pollutants: Asbestos (NESHAP) and the Texas Department of State Health Services Texas Asbestos Health Protection Rules (TAPHR) 25 TAC 296. Regardless of the thoroughness of an asbestos survey, the possibility exists in which some areas containing asbestos were inaccessible or different from those at specific locations. Suspect materials not sampled should be assumed ACM until tested by laboratory analysis.

Mr. William Briseno Texas Workforce Commission

August 6, 2025

Conclusions and Recommendations

Based on data developed during this limited asbestos survey, the following conclusions can be made:

No asbestos was identified in the thirty-nine samples collected from the suspect ACMs located in the areas of proposed renovation at the TWC Trinity Building.

The following recommendations are made based on the results of the limited asbestos survey:

If during any renovation activities, suspect ACM is encountered in areas that were not accessible at the time this survey was performed, samples of these materials should be collected by a DSHS licensed inspector and analyzed by a qualified laboratory.

No asbestos-containing materials were identified during this limited ACM survey. Any identified ACM in the building that is not subject to immediate abatement should be monitored for proper maintenance procedures as part of a site-specific O&M Program. Prior to any remodeling, renovation, or demolition activities, proper asbestos abatement procedures developed by a licensed asbestos consultant should be followed for all identified ACM. These procedures include the use of a licensed asbestos contractor and the proper disposal of such materials in a landfill that is authorized to accept asbestos.

The enclosed information documents our process and findings. If you have any questions or require any additional information, please do not hesitate to contact us. We appreciate the opportunity to be of service to TWC.

Sincerely, HALFF ASSOCIATES, INC.

Michael Thiele, P.G.

Senior Geologist Individual Asbestos Consultant No. 105780

Attachments (5)

HOMOGENOUS MATERIALS

AND

SUMMARY OF BULK SAMPLE ANALYSIS AND ASSESSMENT

Halff Associates AVO 52249.038 Page 1

TABLE 1 - HOMOGENOUS MATERIALS

Cooling Tower and Chiller Renovations

No. Material Description Sample Numbers Location

1 Tan Mastic CTC-01, 02, 03 Exterior Wall at CWR

2 Grey Mastic CTC-04, 05, 06 Exterior Wall at CWS

3 Black Mastic CTC-07, 08, 09 Cooling Tower Floor & Seams

4 Plaster & Lath Texture, Coating, Light Tan CTC-10, 11, 12 Exterior Wall at CWS/R

5 Silver Insulation Blanket CTC-13, 14, 15 Chiller 2, Southwest Chiller 2, Northwest Chiller 1, Northeast

6 Mastic, Paper/Foil Wrap, Fiberglass Insulation CTC-16, 17, 18 Blue CHS & CWS 6"

Mechanical Room

7 White Mastic on Paper/Foil Wrap, Tan Foam Insulation CTC-19, 20, 21 Mechanical

Room, 4" CHR Pipes, White

8 Red Gasket CTC-22, 23, 24 Mechanical Room, 6" CWS at Chiller 2

9 Green/Teal Gasket CTC-25, 26, 27 Mechanical Room, Green CWS at CWP-2

10 White Mastic CTC-28, 29, 30

Mechanical Room, 12" HVAC Duct

Mechanical Room, 14" HVAC Duct at EF-7

11 Black Vibration Damper CTC-31, 32, 33 HVAC Duct at EF-7

12 Grey Caulk CTC-34, 35, 36 Cooling Tower Scaffolding Pedestal

13 Mastic on Paper/Foil Wrap, Blue Foam Insulation CTC-37, 38, 39 Mechanical Room, CWS/CHS, Blue Note: No Asbestos Identified in samples.

CHS/R – Chilled Water Supply/Return Lines CWS/R – Condenser Water Supply/Return Lines

TABLE 2 - SUMMARY OF BULK SAMPLE ANALYSIS AND ASSESSMENT

NOTES:

a CH = Chrysotile; AM = Amosite; CR = Crocidolite; AN = Anthophyllite; TR = Tremolite; AC = Actinolite; NAD = No Asbestos Detected b M = Miscellaneous; S = Surfacing; TSI = Thermal System Insulation c F = Friable; NF = Non-Friable d G = Good; U = Undamaged; D = Damaged; SD = Significantly damaged e H = High; M = Moderate; L = Low NA = Not Applicable

Sample

ID

Number Sample Description Material Location Percentage and Type of

Asbestos Detected a

Estimated Quantity

(SF/LF)

Type of ACM b Friability c

Physical Condition d

Potential for Disturbance e

CTC-01 Tan Mastic Exterior Wall at CWR NAD NA NA NF G L

CTC-02 Tan Mastic Exterior Wall at CWR NAD NA NA NF G L

CTC-03 Tan Mastic Exterior Wall at CWR NAD NA NA NF G L

CTC-04 Grey Mastic Exterior Wall at CWS NAD NA NA NF G L

CTC-05 Grey Mastic Exterior Wall at CWS NAD NA NA NF G L

CTC-06 Grey Mastic Exterior Wall at CWS NAD NA NA NF G L

CTC-07 Black Mastic Cooling Tower Floor & Seams NAD NA NA NF G L

CTC-08 Black Mastic Cooling Tower Floor & Seams NAD NA NA NF G L

CTC-09 Black Mastic Cooling Tower Floor & Seams NAD NA NA NF G L

CTC-10 Plaster & Lath Texture, Coating, Light Tan

Exterior Wall at

CWS/R

NAD - Paint Texture NAD - Plaster NA NA NF G L a CH = Chrysotile; AM = Amosite; CR = Crocidolite; AN = Anthophyllite; TR = Tremolite; AC = Actinolite; NAD = No Asbestos Detected b M = Miscellaneous; S = Surfacing; TSI = Thermal System Insulation c F = Friable; NF = Non-Friable d G = Good; U = Undamaged; D = Damaged; SD = Significantly damaged e H = High; M = Moderate; L = Low NA = Not Applicable

Sample

ID

Number Sample Description Material Location Percentage and Type of

Asbestos Detected a

Estimated Quantity

(SF/LF)

Type of ACM b Friability c

Physical Condition d

Potential for Disturbance e

CTC-11 Plaster & Lath Texture, Coating, Light Tan

Exterior Wall at

CWS/R

NAD - Paint Texture NAD - Plaster NA NA NF G L

CTC-12 Plaster & Lath Texture, Coating, Light Tan

Exterior Wall at

CWS/R

NAD - Paint Texture NAD - Plaster NA NA NF G L

CTC-13 Silver Insulation Blanket Chiller 2, Southwest NAD - Wrap 1 NAD - Wrap 1

NAD - Insulation

NA NA NF G L

CTC-14 Silver Insulation Blanket Chiller 2, Northwest NAD - Wrap 1 NAD - Wrap 1

NAD - Insulation

NA NA NF G L

CTC-15 Silver Insulation Blanket Chiller 1, Northeast NAD - Wrap 1 NAD - Wrap 1

NAD - Insulation

NA NA NF G L

CTC-16 Mastic, Paper/Foil Wrap, Fiberglass Insulation

Blue CHS & CWS 6" Mechanical Room

NAD - Paint Layer NAD - White Mastic

NAD - Wrap NAD - Insulation

NA NA NF G L

CTC-17 Mastic, Paper/Foil Wrap, Fiberglass Insulation

Blue CHS & CWS 6" Mechanical Room

NAD - Paint Layer NAD - White Mastic

NAD - Wrap NAD - Insulation

NA NA NF G L

CTC-18 Mastic, Paper/Foil Wrap, Fiberglass Insulation

Blue CHS & CWS 6" Mechanical Room

NAD - Paint Layer NAD - White Mastic

NAD - Wrap NAD - Insulation

NA NA NF G L

CTC-19 White Mastic on Paper/Foil Wrap, Tan Foam Insulation

Mechanical Room, 4" CHR Pipes, White

NAD - White Mastic NAD - Wrap

NAD - Insulation

NA NA NF G L

a CH = Chrysotile; AM = Amosite; CR = Crocidolite; AN = Anthophyllite; TR = Tremolite; AC = Actinolite; NAD = No Asbestos Detected b M = Miscellaneous; S = Surfacing; TSI = Thermal System Insulation c F = Friable; NF = Non-Friable d G = Good; U = Undamaged; D = Damaged; SD = Significantly damaged e H = High; M = Moderate; L = Low NA = Not Applicable

Sample

ID

Number Sample Description Material Location Percentage and Type of

Asbestos Detected a

Estimated Quantity

(SF/LF)

Type of ACM b Friability c

Physical Condition d

Potential for Disturbance e

CTC-20 White Mastic on Paper/Foil Wrap, Tan Foam Insulation

Mechanical Room, 4" CHR Pipes, White

NAD - White Mastic NAD - Wrap

NAD - Insulation

NA NA NF G L

CTC-21 White Mastic on Paper/Foil Wrap, Tan Foam Insulation

Mechanical Room, 4" CHR Pipes, White

NAD - White Mastic NAD - Wrap

NAD - Insulation

NA NA NF G L

CTC-22 Red Gasket Mechanical Room, 6" CWS at Chiller 2 NAD NA NA NF G L

CTC-23 Red Gasket Mechanical Room, 6" CWS at Chiller 2 NAD NA NA NF G L

CTC-24 Red Gasket Mechanical Room, 6" CWS at Chiller 2 NAD NA NA NF G L

CTC-25 Green/Teal Gasket Mechanical Room, Green CWS at CWP-

NAD NA NA NF G L

CTC-26 Green/Teal Gasket Mechanical Room, Green CWS at CWP-

NAD NA NA NF G L

CTC-27 Green/Teal Gasket Mechanical Room, Green CWS at CWP-

NAD NA NA NF G L

CTC-28 White Mastic Mechanical Room, 12" HVAC Duct NAD NA NA NF G L

CTC-29 White Mastic Mechanical Room, 12" HVAC Duct NAD NA NA NF G L a CH = Chrysotile; AM = Amosite; CR = Crocidolite; AN = Anthophyllite; TR = Tremolite; AC = Actinolite; NAD = No Asbestos Detected b M = Miscellaneous; S = Surfacing; TSI = Thermal System Insulation c F = Friable; NF = Non-Friable d G = Good; U = Undamaged; D = Damaged; SD = Significantly damaged e H = High; M = Moderate; L = Low NA = Not Applicable

Sample

ID

Number Sample Description Material Location Percentage and Type of

Asbestos Detected a

Estimated Quantity

(SF/LF)

Type of ACM b Friability c

Physical Condition d

Potential for Disturbance e

CTC-30 White Mastic Mechanical Room, 14" HVAC Duct at

EF-7

NAD NA NA NF G L

CTC-31 Black Vibration Damper HVAC Duct at EF-7 NAD NA NA NF G L

CTC-32 Black Vibration Damper HVAC Duct at EF-7 NAD NA NA NF G L

CTC-33 Black Vibration Damper HVAC Duct at EF-7 NAD NA NA NF G L

CTC-34 Grey Caulk Cooling Tower Scaffolding Pedestal NAD NA NA NF G L

CTC-35 Grey Caulk Cooling Tower Scaffolding Pedestal NAD NA NA NF G L

CTC-36 Grey Caulk Cooling Tower Scaffolding Pedestal NAD NA NA NF G L

CTC-37 Mastic on Paper/Foil Wrap, Blue Foam Insulation

Mechanical Room, CWS/CHS, Blue

NAD - Paint Layer NAD - White Mastic

NAD - Wrap NAD - Insulation

NA NA NF G L

CTC-38 Mastic on Paper/Foil Wrap, Blue Foam Insulation

Mechanical Room, CWS/CHS, Blue

NAD - Paint Layer NAD - White Mastic

NAD - Wrap NAD - Insulation

NA NA NF G L

CTC-39 Mastic on Paper/Foil Wrap, Blue Foam Insulation

Mechanical Room, CWS/CHS, Blue

NAD - Paint Layer NAD - White Mastic

NAD - Wrap NAD - Insulation

NA NA NF G L

SAMPLE LOCATION MAP

Project No.: 52249.038 Issued: July 2025 Drawn By: FD Checked By: MT Scale: Not to Scale

Sa m pl e

Lo ca tio n

M ap

TW

C

T rin ity B ui ld in g

T rin ity S tr ee t Au st in

, T x

Explanation

Sample Location Map TWC Trinity Building

1117 Trinity Street Austin, Tx 78701

Figure Number 1

Sample Location (No Asbestos Detected)CTC-XX

CTC-20

Inset A See Inset A for Ductwork Samples

CTC-19

CTC-21

CTC-16

CTC-13

CTC-17

CTC-14

CTC-22, 23, 24

CTC-25, 26, 27CTC-37, 38

CTC-39

CTC-18

CTC-15

CTC-11, 12

CTC-9

CTC-7

CTC-8

CTC-4, 5, 6

CTC-34

CTC-36

CTC-35

CTC-1, 2, 3CTC-10

CTC-29 CTC-28

CTC-31, 32

CTC-33

CTC-30

LABORATORY REPORT

And

CHAIN OF CUSTODY

PLM REPORT SUMMARY

Cates Laboratories NVLAP Lab No. 200569-0

1339 Motor Circle TDSHS License No. 30-0287

Dallas, Texas 75207 (214) 920-5006

Client: Halff Associates Lab Job No.: PLM-41480

Project (Line 1): TWC - Trinity Chillers/Cool Towers Project Set No.: 59881

Project (Line 2): Report Date: 7/24/2025

Project No: 52249.038 Sample Date: 7/17/2025

Identification: Asbestos, Bulk Sample Analysis

Test Method: Polarized Light Microscopy/Dispersion Staining (PLM/DS)

EPA Method 600/R-93/116 Page 1 of 4

On 7/21/2025, thirty-nine (39) bulk samples were submitted by Mr. Michael Thiele of Halff Associates for asbestos analysis by PLM/DS.

Copies of the lab data sheets are attached; additional information may be found therein. The results are summarized below:

Lab

Sample No.

Client

Field I.D.

Sample Description/Location Asbestos Content

These samples were analyzed by layers. The overall percent asbestos for the sample is reported when relevant. The EPA considers a material to be asbestos containing only if it contains greater than one percent asbestos by Calibrated Visual Area Estimation (CVAE). EPA regulations also indicate that Regulated Asbestos Containing

Materials (RACM) – materials that are friable or may become friable – be further analyzed by point counting when the results indicate less than ten percent asbestos by CVAE. CatesLab utilizes CVAE on a routine basis and does not include point counting unless specifically requested by the client. The results may not be reproduced except in full.

CL1396882

CTC-01

Tan Mastic - Exterior Wall at CWR

None Detected - Tan Mastic

CL1396883

CTC-02

CL1396884

CTC-03

CL1396885

CTC-04

Grey Mastic - Exterior Wall at CWS

None Detected - Grey Mastic

CL1396886

CTC-05

CL1396887

CTC-06

CL1396888

CTC-07

Black Mastic - Cooling Tower Floor & Seams

None Detected - Black Mastic

CL1396889

CTC-08

CL1396890

CTC-09

CL1396891

CTC-10

Plaster & Lath Texture, Coating, Light Tan - Exterior Wall at CWS/R

None Detected - Paint Texture

None Detected - Plaster

CL1396892

CTC-11

CL1396893

CTC-12

CL1396894

CTC-13

Silver Insulation Blanket - Chiller 2, Southwest

None Detected - Wrap 1

None Detected - Insulation

CL1396895

CTC-14

Silver Insulation Blanket - Chiller 2, Northwest

CL1396896

CTC-15

Silver Insulation Blanket - Chiller 1, Northeast

Project (Line 2): Report Date: 7/24/2025

Project No: 52249.038 Sample Date: 7/17/2025

Identification: Asbestos, Bulk Sample Analysis

Test Method: Polarized Light Microscopy/Dispersion Staining (PLM/DS)

EPA Method 600/R-93/116 Page 2 of 4

On 7/21/2025, thirty-nine (39) bulk samples were submitted by Mr. Michael Thiele of Halff Associates for asbestos analysis by PLM/DS.

Copies of the lab data sheets are attached; additional information may be found therein. The results are summarized below:

Client

These samples were analyzed by layers. The overall percent asbestos for the sample is reported when relevant. The EPA considers a material to be asbestos containing only if it contains greater than one percent asbestos by Calibrated Visual Area Estimation (CVAE). EPA regulations also indicate that Regulated Asbestos Containing

Materials (RACM) – materials that are friable or may become friable – be further analyzed by point counting when the results indicate less than ten percent asbestos by CVAE. CatesLab utilizes CVAE on a routine basis and does not include point counting unless specifically requested by the client. The results may not be reproduced

CL1396897

CTC-16

Mastic, Paper/Foil Wrap, Fiberglass Insulation - Blue CHS & CWS 6"

Mechanical Room

None Detected - Paint Layer

None Detected - White Mastic

None Detected - Wrap

CL1396898

CTC-17

CL1396899

CTC-18

CL1396900

CTC-19

White Mastic on Paper/Foil Wrap, Tan Foam Insulation - Mechanical

Room, 4" CHR Pipes, White

CL1396901

CTC-20

CL1396902

CTC-21

CL1396903

CTC-22

Red Gasket - Mechanical Room, 6" CWS at Chiller 2

None Detected - Gasket Material

CL1396904

CTC-23

CL1396905

CTC-24

CL1396906

CTC-25

Green/Teal Gasket - Mechanical Room, Green CWS at CWP-2

CL1396907

CTC-26

CL1396908

CTC-27

CL1396909

CTC-28

White Mastic - Mechanical Room, 12" HVAC Duct

Project (Line 2): Report Date: 7/24/2025

Project No: 52249.038 Sample Date: 7/17/2025

Identification: Asbestos, Bulk Sample Analysis

Test Method: Polarized Light Microscopy/Dispersion Staining (PLM/DS)

EPA Method 600/R-93/116 Page 3 of 4

On 7/21/2025, thirty-nine (39) bulk samples were submitted by Mr. Michael Thiele of Halff Associates for asbestos analysis by PLM/DS.

Copies of the lab data sheets are attached; additional information may be found therein. The results are summarized below:

Client

These samples were analyzed by layers. The overall percent asbestos for the sample is reported when relevant. The EPA considers a material to be asbestos containing only if it contains greater than one percent asbestos by Calibrated Visual Area Estimation (CVAE). EPA regulations also indicate that Regulated Asbestos Containing

Materials (RACM) – materials that are friable or may become friable – be further analyzed by point counting when the results indicate less than ten percent asbestos by CVAE. CatesLab utilizes CVAE on a routine basis and does not include point counting unless specifically requested by the client. The results may not be reproduced

CL1396910

CTC-29

White Mastic - Mechanical Room, 12" HVAC Duct

CL1396911

CTC-30

White Mastic - Mechanical Room, 14" HVAC Duct at EF-7

CL1396912

CTC-31

Black Vibration Damper - HVAC Duct at EF-7

None Detected - Vibration Dampener

CL1396913

CTC-32

CL1396914

CTC-33

CL1396915

CTC-34

Grey Caulk - Cooling Tower Scaffolding Pedestal

None Detected - Caulking

CL1396916

CTC-35

CL1396917

CTC-36

CL1396918

CTC-37

Mastic on Paper/Foil Wrap, Glue Foam Insulation - Mechanical Room, CWS/CHS, Blue

CL1396919

CTC-38

CL1396920

CTC-39

Project (Line 2): Report Date: 7/24/2025

Project No: 52249.038 Sample Date: 7/17/2025

Identification: Asbestos, Bulk Sample Analysis

Test Method: Polarized Light Microscopy/Dispersion Staining (PLM/DS)

EPA Method 600/R-93/116 Page 4 of 4

On 7/21/2025, thirty-nine (39) bulk samples were submitted by Mr. Michael Thiele of Halff Associates for asbestos analysis by PLM/DS.

Copies of the lab data sheets are attached; additional information may be found therein.

STATEMENT OF LABORATORY ACCREDITATION

The samples were analyzed in general accordance with the procedures outlined in the U.S. EPA Interim Method for the Determination of Asbestos in Bulk Insulation Samples as found in 40 CFR, Part 763, Subpart E, Appendix E (formerly Subpart F, Appendix A), or the current U.S. EPA method (EPA Method 600/R-93/116) for the analysis of asbestos in building materials, by polarized light microscopy. The results of each bulk sample relate only to the material tested and the results shall not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the Federal Government.

Specific questions concerning bulk sample results shall be directed to the Laboratory Director.

Analyst:

Chris Munch

Laboratory Director: John R. Cates, P.G.

Approved Signatory:

TESTING

NVLAP LAB CODE 200569-0

Bulk Asbestos Analysis Sheet

Cates Laboratories EPA Method 600/R-93/116 NVLAP Lab No. 200569-0

Client: Halff Associates Lab Proj #: PLM-41480

Project (Line 1): TWC - Trinity Chillers/Cool Towers Project Set #: 59881

Project (Line 2):

Project #: 52249.038 Sample #: CL1396882

Field ID #: CTC-01 Page 1 of 1

Sample Description: Tan Mastic - Exterior Wall at CWR

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396882 kkkx Layer 1 Tan Mastic Stereoscopic Examination 1 1396882 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glue Binders 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected zzz

Project (Line 2):

Project #: 52249.038 Sample #: CL1396883

Field ID #: CTC-02 Page 1 of 1

Sample Description: Tan Mastic - Exterior Wall at CWR

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396883 kx Layer 1 Tan Mastic Stereoscopic Examination 1 1396883 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glue Binders 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396884

Field ID #: CTC-03 Page 1 of 1

Sample Description: Tan Mastic - Exterior Wall at CWR

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396884 kx Layer 1 Tan Mastic Stereoscopic Examination 1 1396884 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glue Binders 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396885

Field ID #: CTC-04 Page 1 of 1

Sample Description: Grey Mastic - Exterior Wall at CWS

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396885 kx Layer 1 Grey Mastic Stereoscopic Examination 1 1396885 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Grey Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glue Binders 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396886

Field ID #: CTC-05 Page 1 of 1

Sample Description: Grey Mastic - Exterior Wall at CWS

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396886 kx Layer 1 Grey Mastic Stereoscopic Examination 1 1396886 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Grey Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glue Binders 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396887

Field ID #: CTC-06 Page 1 of 1

Sample Description: Grey Mastic - Exterior Wall at CWS

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396887 kx Layer 1 Grey Mastic Stereoscopic Examination 1 1396887 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Grey Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glue Binders 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396888

Field ID #: CTC-07 Page 1 of 1

Sample Description: Black Mastic - Cooling Tower Floor & Seams

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396888 kx Layer 1 Black Mastic Stereoscopic Examination 1 1396888 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Black Putty Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Binders / Fillers 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396889

Field ID #: CTC-08 Page 1 of 1

Sample Description: Black Mastic - Cooling Tower Floor & Seams

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396889 kx Layer 1 Black Mastic Stereoscopic Examination 1 1396889 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Black Putty Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Binders / Fillers 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396890

Field ID #: CTC-09 Page 1 of 1

Sample Description: Black Mastic - Cooling Tower Floor & Seams

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396890 kx Layer 1 Black Mastic Stereoscopic Examination 1 1396890 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Black Putty Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Binders / Fillers 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396891

Field ID #: CTC-10 Page 1 of 1

Sample Description: Plaster & Lath Texture, Coating, Light Tan - Exterior Wall at CWS/R

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396891 kx Layer 1 Paint Texture Stereoscopic Examination 1 1396891 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Blocky Yes ND ND 5 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate/Binders/Paint 100 Non-fibrous 1 1

Prep/treatment: solvent dissolution Asbestos Content: None Detected

Layer 2 Plaster Stereoscopic Examination 2 1396891 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Hard / Blocky Yes ND ND 95 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate 65 Non-fibrous 2 1 Cement Binders 35 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396892

Field ID #: CTC-11 Page 1 of 1

Sample Description: Plaster & Lath Texture, Coating, Light Tan - Exterior Wall at CWS/R

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396892 kx Layer 1 Paint Texture Stereoscopic Examination 1 1396892 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Blocky Yes ND ND 5 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate/Binders/Paint 100 Non-fibrous 1 1

Prep/treatment: solvent dissolution Asbestos Content: None Detected

Layer 2 Plaster Stereoscopic Examination 2 1396892 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Hard / Blocky Yes ND ND 95 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate 65 Non-fibrous 2 1 Cement Binders 35 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396893

Field ID #: CTC-12 Page 1 of 1

Sample Description: Plaster & Lath Texture, Coating, Light Tan - Exterior Wall at CWS/R

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396893 kx Layer 1 Paint Texture Stereoscopic Examination 1 1396893 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Blocky Yes ND ND 5 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate/Binders/Paint 100 Non-fibrous 1 1

Prep/treatment: solvent dissolution Asbestos Content: None Detected

Layer 2 Plaster Stereoscopic Examination 2 1396893 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Hard / Blocky Yes ND ND 95 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate 65 Non-fibrous 2 1 Cement Binders 35 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396894

Field ID #: CTC-13 Page 1 of 1

Sample Description: Silver Insulation Blanket - Chiller 2, Southwest

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396894 kx Layer 1 Wrap 1 Stereoscopic Examination 1 1396894 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Silver Fibrous / Woven Yes 85 ND 15 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glass Fibers 85 straight none none 1 1 Binders 15 Non-fibrous 1 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 2 Wrap 1 Stereoscopic Examination 2 1396894 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Black Rubbery Yes ND ND 30 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Binders / Fillers 100 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 3 Insulation Stereoscopic Examination 3 1396894 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Fibrous Yes 95 ND 55 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Mineral Wool Fibers 95 Rods 0 3 1 Resin Binders 5 Non-fibrous 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396895

Field ID #: CTC-14 Page 1 of 1

Sample Description: Silver Insulation Blanket - Chiller 2, Northwest

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396895 kx Layer 1 Wrap 1 Stereoscopic Examination 1 1396895 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Silver Fibrous / Woven Yes 85 ND 15 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glass Fibers 85 straight none none 1 1 Binders 15 Non-fibrous 1 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 2 Wrap 1 Stereoscopic Examination 2 1396895 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Black Rubbery Yes ND ND 30 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Binders / Fillers 100 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 3 Insulation Stereoscopic Examination 3 1396895 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Fibrous Yes 95 ND 55 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Mineral Wool Fibers 95 Rods 0 3 1 Resin Binders 5 Non-fibrous 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396896

Field ID #: CTC-15 Page 1 of 1

Sample Description: Silver Insulation Blanket - Chiller 1, Northeast

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396896 kx Layer 1 Wrap 1 Stereoscopic Examination 1 1396896 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Silver Fibrous / Woven Yes 85 ND 15 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Glass Fibers 85 straight none none 1 1 Binders 15 Non-fibrous 1 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 2 Wrap 1 Stereoscopic Examination 2 1396896 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Black Rubbery Yes ND ND 30 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Binders / Fillers 100 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 3 Insulation Stereoscopic Examination 3 1396896 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Fibrous Yes 95 ND 55 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Mineral Wool Fibers 95 Rods 0 3 1 Resin Binders 5 Non-fibrous 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396897

Field ID #: CTC-16 Page 1 of 1

Sample Description: Mastic, Paper/Foil Wrap, Fiberglass Insulation - Blue CHS & CWS 6" Mechanical Room

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396897 kx Layer 1 Paint Layer Stereoscopic Examination 1 1396897 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Blue Hard Yes ND ND 10 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Paint 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 2 White Mastic Stereoscopic Examination 2 1396897 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Rubbery Yes ND ND 10 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Wollastonite 5 Laths +/- 2 1 Aggregate/Binders 95 Non-fibrous 2 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 3 Wrap Stereoscopic Examination 3 1396897 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample 0 White / Silver Fibrous No 75 ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Cellulose Fibers 70 ribbons high 3 1 Glass Fibers 5 straight none none 3 1 Metal Foil 15 Opaque 3 1 Binders 10 Non-fibrous 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 4 Insulation Stereoscopic Examination 4 1396897 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Yellow-Tan Fibrous Yes 95 ND 60 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Mineral Wool Fibers 95 Rods 0 4 1 Resin Binders 5 Non-fibrous 4 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396898

Field ID #: CTC-17 Page 1 of 1

Sample Description: Mastic, Paper/Foil Wrap, Fiberglass Insulation - Blue CHS & CWS 6" Mechanical Room

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396898 kx Layer 1 Paint Layer Stereoscopic Examination 1 1396898 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Blue Hard Yes ND ND 10 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Paint 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 2 White Mastic Stereoscopic Examination 2 1396898 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Rubbery Yes ND ND 10 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Wollastonite 5 Laths +/- 2 1 Aggregate/Binders 95 Non-fibrous 2 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 3 Wrap Stereoscopic Examination 3 1396898 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample 0 White / Silver Fibrous No 75 ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Cellulose Fibers 70 ribbons high 3 1 Glass Fibers 5 straight none none 3 1 Metal Foil 15 Opaque 3 1 Binders 10 Non-fibrous 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 4 Insulation Stereoscopic Examination 4 1396898 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Yellow-Tan Fibrous Yes 95 ND 60 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Mineral Wool Fibers 95 Rods 0 4 1 Resin Binders 5 Non-fibrous 4 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396899

Field ID #: CTC-18 Page 1 of 1

Sample Description: Mastic, Paper/Foil Wrap, Fiberglass Insulation - Blue CHS & CWS 6" Mechanical Room

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396899 kx Layer 1 Paint Layer Stereoscopic Examination 1 1396899 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Blue Hard Yes ND ND 10 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Paint 100 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 2 White Mastic Stereoscopic Examination 2 1396899 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Rubbery Yes ND ND 10 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Wollastonite 5 Laths +/- 2 1 Aggregate/Binders 95 Non-fibrous 2 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 3 Wrap Stereoscopic Examination 3 1396899 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample 0 White / Silver Fibrous No 75 ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Cellulose Fibers 70 ribbons high 3 1 Glass Fibers 5 straight none none 3 1 Metal Foil 15 Opaque 3 1 Binders 10 Non-fibrous 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 4 Insulation Stereoscopic Examination 4 1396899 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Yellow-Tan Fibrous Yes 95 ND 60 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Mineral Wool Fibers 95 Rods 0 4 1 Resin Binders 5 Non-fibrous 4 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396900

Field ID #: CTC-19 Page 1 of 1

Sample Description: White Mastic on Paper/Foil Wrap, Tan Foam Insulation - Mechanical Room, 4" CHR Pipes, White

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396900 kx Layer 1 White Mastic Stereoscopic Examination 1 1396900 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Rubbery Yes ND ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Wollastonite 5 Laths +/- 1 1 Aggregate/Binders 95 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 2 Wrap Stereoscopic Examination 2 1396900 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample 0 White / Silver Fibrous No 75 ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Cellulose Fibers 70 ribbons high 2 1 Glass Fibers 5 straight none none 2 1 Metal Foil 15 Opaque 2 1 Binders 10 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 3 Insulation Stereoscopic Examination 3 1396900 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Blocky Yes ND ND 60 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Synthetic Foam 100 Closed Cells 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396901

Field ID #: CTC-20 Page 1 of 1

Sample Description: White Mastic on Paper/Foil Wrap, Tan Foam Insulation - Mechanical Room, 4" CHR Pipes, White

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396901 kx Layer 1 White Mastic Stereoscopic Examination 1 1396901 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Rubbery Yes ND ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Wollastonite 5 Laths +/- 1 1 Aggregate/Binders 95 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 2 Wrap Stereoscopic Examination 2 1396901 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample 0 White / Silver Fibrous No 75 ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Cellulose Fibers 70 ribbons high 2 1 Glass Fibers 5 straight none none 2 1 Metal Foil 15 Opaque 2 1 Binders 10 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 3 Insulation Stereoscopic Examination 3 1396901 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Blocky Yes ND ND 60 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Synthetic Foam 100 Closed Cells 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396902

Field ID #: CTC-21 Page 1 of 1

Sample Description: White Mastic on Paper/Foil Wrap, Tan Foam Insulation - Mechanical Room, 4" CHR Pipes, White

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396902 kx Layer 1 White Mastic Stereoscopic Examination 1 1396902 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 White Rubbery Yes ND ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Wollastonite 5 Laths +/- 1 1 Aggregate/Binders 95 Non-fibrous 1 1

Prep/treatment: heat / melt Asbestos Content: None Detected

Layer 2 Wrap Stereoscopic Examination 2 1396902 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample 0 White / Silver Fibrous No 75 ND 20 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Cellulose Fibers 70 ribbons high 2 1 Glass Fibers 5 straight none none 2 1 Metal Foil 15 Opaque 2 1 Binders 10 Non-fibrous 2 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Layer 3 Insulation Stereoscopic Examination 3 1396902 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Tan Blocky Yes ND ND 60 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Synthetic Foam 100 Closed Cells 3 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396903

Field ID #: CTC-22 Page 1 of 1

Sample Description: Red Gasket - Mechanical Room, 6" CWS at Chiller 2

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396903 kx Layer 1 Gasket Material Stereoscopic Examination 1 1396903 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Red Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate/Vinyl Binders 100 Non-fibrous 1 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396904

Field ID #: CTC-23 Page 1 of 1

Sample Description: Red Gasket - Mechanical Room, 6" CWS at Chiller 2

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396904 kx Layer 1 Gasket Material Stereoscopic Examination 1 1396904 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Red Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate/Vinyl Binders 100 Non-fibrous 1 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396905

Field ID #: CTC-24 Page 1 of 1

Sample Description: Red Gasket - Mechanical Room, 6" CWS at Chiller 2

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396905 kx Layer 1 Gasket Material Stereoscopic Examination 1 1396905 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Red Rubbery Yes ND ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Aggregate/Vinyl Binders 100 Non-fibrous 1 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396906

Field ID #: CTC-25 Page 1 of 1

Sample Description: Green/Teal Gasket - Mechanical Room, Green CWS at CWP-2

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396906 kx Layer 1 Gasket Material Stereoscopic Examination 1 1396906 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Lt. Green Fibrous Yes 45 ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Synthetic Fibers 35 Monofilaments 1 1 Cellulose Fibers 10 ribbons high 1 1 Binders / Fillers 55 Non-fibrous 1 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396907

Field ID #: CTC-26 Page 1 of 1

Sample Description: Green/Teal Gasket - Mechanical Room, Green CWS at CWP-2

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396907 kx Layer 1 Gasket Material Stereoscopic Examination 1 1396907 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Lt. Green Fibrous Yes 45 ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref. Index Ref. Index Biref Angle Elongation Synthetic Fibers 35 Monofilaments 1 1 Cellulose Fibers 10 ribbons high 1 1 Binders / Fillers 55 Non-fibrous 1 1

Prep/treatment: mechanical separation Asbestos Content: None Detected

Project (Line 2):

Project #: 52249.038 Sample #: CL1396908

Field ID #: CTC-27 Page 1 of 1

Sample Description: Green/Teal Gasket - Mechanical Room, Green CWS at CWP-2

Comments: Analyst: Chris Munch Date Analyzed: 7/23/2025

Lab Job #: PLM-41480 Sample #: CL1396908 kx Layer 1 Gasket Material Stereoscopic Examination 1 1396908 Color Texture Homogeneous? % Fibrous % Asbestos % of Sample -1 Lt. Green Fibrous Yes 45 ND 100 PLM Examination:

Color/ Parallel Perpendicular Extinction Sign of Components % +/- Morphology Pleochroism Ref.