January 31, 2019

GEM EnvironmentalP.O. Box 9053Missoula, MT 59807

CLIENT PROJECT: U of M - McGill Hall, Rm 001A, 001, 015, 19-024LAB CODE: T190368

Dear Customer:

Enclosed are asbestos analysis results for TEM dust wipe samples received at our laboratoryon January 30, 2019. The samples were analyzed for asbestos using transmission electronmicroscopy (TEM) per ASTM D6480-05 Method.

Currently, there is no regulatory limit for asbestos in dust. The analytical sensitivity for theASTM D6480-05 method is 1,000 structures per square centimeter.

Thank you for your business and we look forward to continuing good relations.

730 SE Maynard Road • Cary, NC 27511 • 919.481.1413

Tianbao Bai, Ph.D., CIHLaboratory Director

Kind Regards,

ASBESTOS ANALYTICAL REPORTBy: Transmission Electron Microscopy

Prepared for

GEM Environmental

CLIENT PROJECT:

LAB CODE:

TEST METHOD: Dust WipeASTM D6480-05

REPORT DATE:

U of M - McGill Hall, Rm 001A, 001, 015, 19-024

T190368

01/31/19

ASBESTOS DUST ANALYSISBy: TRANSMISSION ELECTRON MICROSCOPY

Lab Code: T190368Date Received: 01-30-19Date Analyzed: 01-31-19Date Reported: 01-31-19

Client IDLab ID

AreaSampled

(cm2)

TEM DUST WIPE (ASTM D6480-05)

Client: GEM EnvironmentalP.O. Box 9053Missoula, MT 59807

Project: U of M - McGill Hall, Rm 001A, 001, 015, 19-024

AreaAnalyzed

(mm2)Filtration

Factor

AnalyticalSensitivity

(s/cm2)# of

StructuresAsbestos

TypeConcentration

(s/cm2)

T92456

AHA-W-001A-04

0.08 2,400 102 Chrysotile100 20 240,000

T92457

AHA-W-001A-05

0.1 1,900 86 Chrysotile100 20 170,000

T92458

AHA-W-001A-06

0.07 1,400 104 Chrysotile100 10 140,000

T92459

AHA-W-001A-07

0.1 960 93 Chrysotile100 10 89,000

T92460

AHA-W-001-03

0.1 4,800 84 Chrysotile100 50 400,000

T92461

AHA-W-001-04

0.1 4,800 54 Chrysotile100 50 260,000

T92462

AHA-W-001-05

0.1 1,900 6 Chrysotile100 20 12,000

T92463

AHA-W-001-06

0.1 960 31 Chrysotile100 10 30,000

T92464

AHA-W-001-07

0.1 4,800 9 Chrysotile100 50 43,000

Page 1 of 4

ASBESTOS DUST ANALYSISBy: TRANSMISSION ELECTRON MICROSCOPY

Lab Code: T190368Date Received: 01-30-19Date Analyzed: 01-31-19Date Reported: 01-31-19

Client IDLab ID

AreaSampled

(cm2)

TEM DUST WIPE (ASTM D6480-05)

Client: GEM EnvironmentalP.O. Box 9053Missoula, MT 59807

Project: U of M - McGill Hall, Rm 001A, 001, 015, 19-024

AreaAnalyzed

(mm2)Filtration

Factor

AnalyticalSensitivity

(s/cm2)# of

StructuresAsbestos

TypeConcentration

(s/cm2)

T92465

AHA-W-015-01

0.1 960 8 Chrysotile100 10 7,700

T92466AHA-015B-01 0.1 960 41 Chrysotile100 10 39,000

T92467

AHA-W-021-01

0.1 960 1 Amosite100 10 9604 Chrysotile 3,800

T92468

AHA-W-029-01

0.1 960 7 Chrysotile100 10 6,7001 Amosite 960

T92469

AHA-W-127-01

0.1 960 4 Chrysotile100 10 3,800

T92470

AHA-W-127-02

0.1 960 4 Chrysotile100 10 3,800

T92471

AHA-W-127-03

0.1 960 21 Chrysotile100 10 20,000

T92472

AHA-W-126-01

0.1 960 6 Chrysotile100 10 5,800

T92473

AHA-W-126-02

0.1 960 6 Chrysotile100 10 5,800

Page 2 of 4

ASBESTOS DUST ANALYSISBy: TRANSMISSION ELECTRON MICROSCOPY

Lab Code: T190368Date Received: 01-30-19Date Analyzed: 01-31-19Date Reported: 01-31-19

Client IDLab ID

AreaSampled

(cm2)

TEM DUST WIPE (ASTM D6480-05)

Client: GEM EnvironmentalP.O. Box 9053Missoula, MT 59807

Project: U of M - McGill Hall, Rm 001A, 001, 015, 19-024

AreaAnalyzed

(mm2)Filtration

Factor

AnalyticalSensitivity

(s/cm2)# of

StructuresAsbestos

TypeConcentration

(s/cm2)

T92474

AHA-W-215-01

0.1 1,900 4 Chrysotile100 20 7,700

T92475

AHA-W-215-02

0.1 1,900 2 Chrysotile100 20 3,800

T92476

AHA-W-BB-01

0.1 960 0 NoneDetected

100 10 <960

Page 3 of 4

LEGEND: None

METHOD: ASTM D6480-05

ANALYTICAL SENSITIVITY: 1,000 structures/cm2

REGULATORY LIMIT: None

This report relates only to the samples tested or analyzed and may not be reproduced, except in full,without written approval by Eurofins CEI. Eurofins CEI makes no warranty representation regardingthe accuracy of client submitted information in preparing and presenting analytical results.Interpretation of the analytical results is the sole responsibility of the client. Estimated measurement ofuncertainty is available on request. Samples were received in acceptable condition unless otherwisenoted.

Information provided by customer includes customer sample ID, location, volume and area as well asdate and time of sampling.

Page 4 of 4

ANALYST: APPROVED BY:Tianbao Bai, Ph.D., CIHLaboratory Director

Kamila Reichert