5-5. CTL REPORT - 1770 21st Street., ASBESTOS, DN52856.000-221-R1-Signed.pdf

CTL | Thompson, Inc.

Denver, Fort Collins, Colorado Springs, Glenwood Springs, Pueblo, Summit County – Colorado

Cheyenne, Wyoming and Bozeman, Montana

ASBESTOS SURVEY AND LEAD-BASED

PAINT SAMPLING FOR DEMOLITION

COPPER DOOR FACILITY

1770 21st Street Boulder, Colorado 80302

Prepared for:

BOULDER COUNTY PUBLIC WORKS

PO Box 471

Boulder, Colorado 80306

Attention:

Joe May

Project No. DN52,856.000-221-R1

April 22, 2026 https://ctlthompson.com/ https://ctlthompson.com/denver https://www.ctlthompson.com/fortcollins https://www.ctlthompson.com/coloradosprings https://www.ctlthompson.com/glenwoodsprings https://www.ctlthompson.com/pueblo https://www.ctlthompson.com/summitcounty https://www.ctlthompson.com/cheyenne https://www.ctlthompson.com/bozeman

BOULDER COUNTY OUBLIC WORKS

LIMITED ASBESTOS SURVEY

COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

TABLE OF CONTENTS

ACRONYMS ................................................................................................................................ i

1.0 INTRODUCTION

2.0 ASBESTOS METHODOLOGY

3.0 ASBESTOS INSPECTION PROCEDURE

3.1 Asbestos Sample Collection

3.2 Asbestos Sample Analysis

4.0 ASBESTOS REGULATORY CRITERIA

5.0 ASBESTOS INSPECTION RESULTS

5.1 Asbestos Containing Material

5.2 Trace / OSHA Regulated Material

6.0 LEAD PAINT SAMPLING

7.0 REGULATED BUILDING MATERIALS / HAZARDOUS MATERIALS

8.0 LIMITATIONS

SUMMARY OF FEDERAL AND STATE ASBESTOS REGULATIONS

TABLE 1 – ASBESTOS RESULTS FOR HOMOGENOUS MATERIALS

FIS. 1A THROUGH 1C – APPROXIMATE SAMPLE LOCATIONS

FIG. 2 – TEXTURE ACM LOCATIONS – FIRST FLOOR

FIG. 3 – TEXTURE ACM LOCATIONS – SECOND FLOOR

FIG. 4 – TEXTURE ACM LOCATIONS – THIRD FLOOR

FIG. 5 – FLOORING ACM LOCATIONS – FIRST FLOOR

FIG. 6 – FLOORING ACM LOCATIONS – SECOND FLOOR

FIG. 7 – FLOORING ACM LOCATIONS – THIRD FLOOR

FIG. 8 – OTHER ACM LOCATIONS – FIRST FLOOR

FIG. 9 – OTHER ACM LOCATIONS – SECOND FLOOR

FIG. 10 – OTHER ACM LOCATIONS – THIRD FLOOR

APPENDIX A – SITE PHOTOGRAPHS

APPENDIX B – ASBESTOS LABORATORY RESULTS AND CHAINS OF CUSTODY

APPENDIX C – LEAD LABORATORY RESULTS AND CHAINS OF CUSTODY

APPENDIX D – CDPHE REGULATED BUILDING MATERIALS INFORMATION

APPENDIX E – CTL|THOMPSON CERTIFICATIONS

BOULDER COUNTY OUBLIC WORKS i of i

COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

ACRONYMS

ACBM Asbestos Containing Building Materials

ACM Asbestos Containing Materials

AHERA Asbestos Hazard Emergency Response Act

EPA Environmental Protection Agency

HA Homogeneous Area

HEPA High Efficiency Particulate Air

HVAC Heating Ventilation and Air Conditioning

NESHAP National Emission Standards for Hazardous Air Pollutants

O&M Operations and Maintenance

OSHA Occupational Safety and Health Administration

PCM Phase Contrast Microscopy

PLM Polarized Light Microscopy

PPM Parts Per Million

RBM Regulated Building Material

TEM Transmission Electron Microscopy

TSI Thermal System Insulation

BOULDER COUNTY OUBLIC WORKS 1 of 12

COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

1.0 INTRODUCTION

Boulder County Public Works retained CTL|Thompson, Inc. (CTL|T) to perform an asbestos survey for the demolition of 1770 21st Street in Boulder, Colorado.

The subject property is a 3-story apartment type building with a newER addition on the southwest corner of the first floor. The building is currently unoccupied. The building is approxi-mately 15,168 square feet and was constructed in 1972, with the addition constructed in 1998.

The building is heated by hot water radiant heat and cooled by three roof-mounted swamp cool-ers.

The building is being considered for demolition. Mr. Benjamin Rief and Mr. Kendal

Fosbaugh, certified CDPHE Asbestos Inspectors #30857 and #28216, performed the asbestos sur-vey on March 10, 11, 16, 17, and April 2, 2026. We observed and sampled suspect asbestos con-taining building materials (ACBM) in the structure. All observed suspect ACBM were sampled in general accordance with AHERA regulations.

2.0 ASBESTOS METHODOLOGY

The purpose of the asbestos inspection was to identify the condition and location of friable and non-friable asbestos materials that are present in the building. During the asbestos materials survey, CTL|T performed the following tasks:

• Inspected accessible areas for suspected asbestos materials;

• Determined friability of suspected asbestos materials by touching;

• Developed a sampling plan for each material based on the homogeneous material type, friability, accessibility, and material locations;

• Assessed the condition and potential hazards of the suspected asbestos materials;

• Collected samples of suspected homogeneous and non-homogeneous materials and submitted them for laboratory analysis by Polarized Light Microscopy (PLM);

and,

• Documented findings and inspection protocol in accordance with accepted industry standards.

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COPPER DOOR FACILITY – 1770 21ST STREET

3.0 ASBESTOS INSPECTION PROCEDURE

Homogeneous suspect asbestos materials were identified by visually inspecting the following systems:

• Wall/ceiling systems;

• Flooring systems;

• Thermal systems; and

• Miscellaneous / Roofing systems.

Based on our inspection, the following types of suspect asbestos-containing materials were identified and sampled:

• Wall and Ceiling Systems o Drywall / Texture – 34 Samples o Joint Compound – 4 Samples o Cove Base Mastic – 10 Samples

• Flooring Systems o Floor Tile / Mastic – 12 Samples o Carpet Mastic – 14 Samples o Vinyl – 2 Samples o Rubber Threshold Mastic - 4

• Thermal Systems o Blown in Insulation – 6 Samples o Fire Door – 2 Samples o Water Heater Insulation – 3 Samples o Boiler/Radiator Pipe Insulation – 3 Samples o Pipe Dope – 2 Samples

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COPPER DOOR FACILITY – 1770 21ST STREET

• Miscellaneous / Roofing Systems o Roof Shingles – 2 Samples o Bath Tile – 2 Samples o Vinyl – 2 Samples o Sink Coating / Mastic – 2 Samples o Caulking – 10 Samples o Window Glazing – 4 Samples o Countertop Mastic – 8 Samples

The inspection did involve limited destructive observation methods; this generally consisted of placing small holes in walls/floors and collecting samples of various materials. Although destructive observations and sampling were conducted, there may be areas warranting further investigation. If additional suspect materials are encountered during the demolition, CTL|T should be contacted for additional sampling.

3.1 Asbestos Sample Collection

CTL|T collected bulk samples of the suspected friable ACBM and non-friable RACM (that would become friable during demolition) asbestos materials in a random and representative manner as defined by the U.S. Environmental Protection Agency (EPA) statistical sampling methods. Friable surfacing materials, if present, were sampled in general accordance with the random sampling procedures presented in EPA Publication EPA560/5-85-030a (also known as the “Pink Book”). The collected samples were packaged in sealed and labeled containers.

3.2 Asbestos Sample Analysis

The bulk samples of suspected asbestos materials were submitted to EMSL Analytical

Inc. for analysis. EMSL is accredited by the National Voluntary Laboratory Accreditation Program

(NVLAP) (Lab Code NVLAP Lab Code 200828-0).

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COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

Individual layers of the suspect asbestos samples were analyzed by Polarized Light Mi-croscopy (PLM) to determine asbestos type and content. Unused portions of the samples were archived for 60 days, unless the client requested special handling. By regulation, any single pos-itive asbestos sample classifies the entire homogeneous material as asbestos-containing and additional analysis is not required.

4.0 ASBESTOS REGULATORY CRITERIA

According to the Occupational Safety and Health Administration (OSHA), the Environmen-tal Protection Agency (EPA), and the Colorado Department of Public Health and Environment

(CDPHE), samples with asbestos concentrations greater than one percent (1%) are classified as asbestos-containing materials and are a regulated material. If a building structure is scheduled for renovation or demolition, friable samples that contain trace amounts of asbestos (1% or less) must be further analyzed by a more accurate point-count analysis to determine if they exceed the

1% threshold, or the materials must be assumed to contain asbestos and be classified as a reg-ulated material.

The EPA and OSHA distinguish between friable and non-friable forms of asbestos mate-rials. Friable materials can be crumbled or reduced to powder by hand pressure when dry. Non-friable materials cannot be crumbled, pulverized, or reduced to powder by hand pressure when dry. Friable materials are more likely to be released into the air, especially if impacted or damaged during normal use, renovation, or demolition of a building. Therefore, the distinction between fri-able and non-friable asbestos materials is important. The EPA further segregates non-friable as-bestos materials into Category I or Category II. Category I non-friable asbestos materials include resilient floor coverings, asphalt roofing products, packings, and gaskets. Removal of these as-bestos materials is not required prior to demolition of a building, as long as they are in good condition and not friable and/or rendered friable. Category II asbestos materials are all other non-friable asbestos materials and may be required to be removed prior to demolition of a building if those materials will be rendered friable. All ACM that will be disturbed during a renovation must be abated.

Whether removed or remaining in a structure during demolition, the confirmed or presumed asbestos materials are subject to EPA National Emission Standards for Hazardous Air Pollutants

(NESHAP) and OSHA regulations. In 40 CFR 61.145, NESHAP requires that each owner or

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COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

operator of a demolition activity provide the administrator with written notice of intent. The CDPHE has implemented the NESHAP program.

5.0 ASBESTOS INSPECTION RESULTS

CTL|T completed a survey of the building. Results of the asbestos analyses for the homogeneous materials collected from the building by CTL|T are summarized below. Laboratory reports for the samples collected by CTL|T are presented in Appendix B.

CTL|T collected one hundred and twenty-six (126) samples of suspect ACM from the building.

5.1 Asbestos Containing Material

Our survey identified the following ACM:

• Wall and Ceiling Systems o Popcorn Texture (white) – HA1 - Ceilings – approx. 15,000 square feet

(essentially the entire building except the boiler and storage rooms) o Overspray (white) – HA32 - approx. 2,000 square feet - visible on wood trusses in attic (above ceiling hatch on 3rd floor hallway) and on HVAC components visible at floor level behind access hatches in the hallways.

o Orange Peel Texture (yellow) – HA2 - Hallway and Stairwell walls – approx.

8,400 square feet o Orange Peel Texture (white) – HA3 - Residence Rooms walls – approx.

27,400 square feet o Orange Peel Texture (green) – HA4 - Security Office walls – approx. 440 square feet o Joint compound on all walls – HA9 - assumed that – for anywhere there are textured walls – this will also be abated. See Section 5.2 for further discussion where untextured.

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COPPER DOOR FACILITY – 1770 21ST STREET

• Floor Systems o Green speckled 12x12 floor tile and mastic below – HA12 - Offices in northeast corner of each floor – approx. 150 square feet o Brown speckled 12x12 floor tile and mastic below – HA13 - Bathrooms in offices in northeast corner of each floor – approx. 90 square feet o White speckled 12x12 floor tile and mastic below – HA26 - Under carpet in

1st floor office in northeast corner– approx. 40 square feet

• Thermal Systems o Pipe Cement – HA42 - White cement coating pipes exiting boiler – approx.

5 linear feet o Pipe “Sealant” – HA49 - Associated with pipe insulation penetrating down beneath the slab in the boiler room; this material point-counted to less than 0.25% asbestos and so may or may not be “Trace”, but appears to have been picked up on only one of our three insulation samples; by rule we have to assume that this is ACM until further observation and sampling is performed, and this will necessitate at least some destruction of the concrete slab. At present we assume approximately 400 linear feet beneath the first floor slab, until further observation is performed.

• Other Miscellaneous Systems o Black cove base mastic/mud – HA7 – Hallways and stairwells - approx. 250 square feet o White cove base mastic/mud – HA8 – resident rooms - approx. 350 square feet o Fire Doors – HA18 - Entrances, and doors exiting stairwells and boiler room

– approx. 300 square feet (12 doors) o White speckled 4x4 shower tile mastic – HA15 - Bathrooms on north side of building – approx. 160 square feet

These materials will require abatement by a General Abatement Contractor (GAC) for dem-olition in Boulder; we note that typically, Category I nonfriable floor tile and mastic can stay in place provided they remain in generally nonfriable condition (the other materials to be abated are either

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COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

friable, would become friable, or are adhered to friable materials). However, City of Boulder decon-struction requirements, found at: https://bouldercolorado.gov/services/sustainable-deconstruction-requirements outlines the need for recycling at least 75% of some building materials (though this may or may not be subject to discussions with the City). In addition, it may be challenging for the contractor to keep flooring materials on the 2nd and 3rd floors in relatively nonfriable condition during demolition. Furthermore, the GAC will need to abate walls and ceilings regardless – along with cove base and shower tile adhering - and will have containments erected where flooring and other materials can be included in abatement relatively easily.

5.2 Trace / OSHA Regulated Material

The following materials were point-counted to <0.25% Chrysotile asbestos:

• An exterior window glazing on the 3rd floor east stairwell; minimal - approx. (one) 1 square foot;

• A mastic beneath the faux wood vinyl flooring in the kitchens; approx. 720 square feet; and,

• Joint Compound – Drywall System - approx. 700 square feet untextured in the boiler and storage rooms.

Materials with any amount of asbestos are still regulated by OSHA, but these materials are not regulated by CDPHE. Specifications for demolition should identify the trace materials and es-tablish a scope of work compliant with EPA, OSHA, State, and local regulations. We also recom-mend removal of all visible debris found on the ground surface so as to avoid any asbestos-in-soils issue after demolition.

There is some interpretation as to how City of Boulder requirements mesh with EPA and

CDPHE asbestos/demolition regulations; we offer these points for consideration for trace (1% or less asbestos) where often these would otherwise be left in place as demo waste:

• If the Trace material is chosen to not be abated – for example the window glazing – care should be taken not to mix these trace materials in with recycled materials.

• The FAQ guidance at the Boulder website, in reference to “non-friable, non-regu-lated, or trace asbestos”, simply states the need to talk with the City before starting deconstruction.

https://bouldercolorado.gov/services/sustainable-deconstruction-requirements https://bouldercolorado.gov/services/sustainable-deconstruction-requirements

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COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

• CTL|T spoke with a CDPHE representative on April 21, 2026, who clarified that -though they do regulate ACM flooring materials - they do not regulate, per se, Trace materials, nor does EPA, but suggested that consideration and/or notice be given to:

o The landfill / ultimate recipient of demo materials;

o OSHA. Worker protection should be of utmost priority regardless of deci-sions made on disposal or recycling, particularly when creating dust (e.g.

cutting or grinding of concrete) with any amount of asbestos adhering to it;

and, o Local requirements (stated above).

A summary of asbestos sample results can be found in Table 1, and sample locations can be found on Figures 1A thru 1C. Asbestos sample lab results and chain of custody can be found in Appendix B.

6.0 LEAD PAINT SAMPLING

Since the building is planned for a demolition, the building waste is planned to be placed in a landfill, we conducted sampling for lead containing paint.

CTL|T collected eight (8) paint samples as follows:

• Pb1 – White Exterior = 120 ppm

• Pb2 – Yellow Exterior = <64 ppm

• Pb3 – White Resident Rooms = <64 ppm

• Pb4 – Yellow Hallway = <64 ppm

• Pb5 – Blue Stair Rails / Window Frames = 160 ppm

• Pb6 – Blue Addition = <64 ppm

• Pb7 – White Addition = <64 ppm

• Pb8 – Green Security Office = <64 ppm

Lead was detected in the eight paint samples. Two of the lead paint samples resulted in a lead concentration above 20 times the TCLP hazardous waste limit of 5 parts per million (5ppm), or 0.01% / 100 ppm. Considering the laboratory results and implied “20 times TCLP waiver of

TCLP sampling”, referenced in section 1.2 of TCLP Method 1311, required under 40 CFR 261.24, BOULDER COUNTY OUBLIC WORKS 9 of 12

COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

lead TCLP sampling will be necessary for disposal of the painted components. We are currently awaiting the results of this analysis and will provide them when they are received from the labor-atory.

Paint sample locations can be found on Figure 1. Paint sample lab results and chain of custody can be found in Appendix C.

7.0 REGULATED BUILDING MATERIALS / HAZARDOUS MATERIALS

We did observe regulated building materials that should be removed properly prior to the demolition of the building. These materials include:

• (1) Mini Refrigerator (2nd Floor Office)

• (23) Fire-Extinguishers

• (23) Window A/C units

• (1) Condenser

• (25) 8 feet or higher, 2-foot fluorescent light bulbs (Addition)

• (13) 8 feet or higher, fluorescent light ballast (Addition)

• (52) 8 feet or higher, 2-foot fluorescent light bulbs (Original Building)

• (17) 8 feet or higher, fluorescent light ballast (Original Building)

8.0 LIMITATIONS

This report was prepared for the use of Boulder County Public Works in assessing asbestos for the demolition of 1770 21st Street in Boulder, Colorado. Observations made were with limited intrusiveness and of readily visible or exposed building materials. Our services were performed with limited destructive sampling; thus, our services are not intended to guarantee or certify the absence of asbestos.

This report is not to be used as a bid document for the removal, repair, encapsulation, enclosure, or Operations and Maintenance (O&M) of asbestos containing materials. CDPHE certified individuals from our firm can prepare a scope of work, bid documents, removal and repair methods/procedures, specifications, designs and O&M plans if desired.

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COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

The accuracy and reliability of environmental studies are a reflection of the number and type of samples taken and extent of the analyses conducted and are thus inherently limited to and dependent upon the resources expended. An independent laboratory performed laboratory analysis. CTL|T is not responsible for the accuracy of data presented by others.

We believe we performed the survey in a manner consistent with the level of care and expertise exercised by members of the asbestos inspection and assessment profession. CTL|T does not imply or guarantee that every suspect asbestos material on or in the buildings has been identified or sampled. Historically, asbestos has been used extensively in the United States. This inspection is intended to identify those components that are reasonably suspect and hence most likely to be asbestos materials in quantities subject to regulation based on existing industry and regulatory standards. If additional asbestos materials or asbestos-suspect materials are encountered, work should be stopped, and an additional inspection performed.

If we can be of further service discussing the contents of this report, please call us

CTL|THOMPSON, INC.

Asbestos Consulting Firm No.: ACF-14870

Benjamin Rief Staff Geologist Certified Asbestos Inspector #30857 brief@ctlthompson.com

Kendal Fosbaugh Environmental Technician Certified Asbestos Inspector #28216 kfosbaugh@ctlthompson.com

Reviewed by:

Matthew L. Wardlow, P.E.

Environmental Department Manager Certified Asbestos Inspector #775 mwardlow@ctlthompson.com

Via e-mail: jmay@bouldercounty.gov mailto:brief@ctlthompson.com mailto:kfosbaugh@ctlthompson.com mailto:mwardlow@ctlthompson.com mailto:jmay@bouldercounty.gov

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1770 21ST STREET, BOULDER CO

SUMMARY OF FEDERAL AND STATE ASBESTOS REGULATIONS

OSHA: U.S. Department of Labor, Occupational Safety, and Health Administration, including but not limited to:

• Occupational Exposure to Asbestos, Tremolite, Anthophyllite, and Actinolite;

• Final Rules Title 29, Part 1910, Section 1325 and Part 1926, Section 1101 of the Code of Federal Regulations;

• Respiratory Protection Standard Title 29, Part 1910, Section 134 of the Code of Federal Regulations;

• Construction Industry Title 29, Part 1926, of the Code of Federal Regulations;

• Access to Employee Exposure and Medical Records Title 29, Part 1910, Section 2 of the Code of Federal Regulations;

• Hazard Communication Title 29, Part 1926 Section 59 of the Code of Federal Regulations; and

• Specifications for Accident Prevention Signs and Tags Title 29, Part 1910, Section 145 of the Code of Federal Regulations.

DOT: U.S. Department of Transportation, including but not limited to:

• Hazardous Substances Title 29, Part 171 and 172 of the Code of Federal Regulations.

EPA: U.S. Environmental Protection Agency, including but not limited to:

• Asbestos Hazard Emergency Response Act (AHERA) Regulation;

• Asbestos Containing Materials in Schools Final Rule & Notice Title 40, Part 763 Sub-part E of the Code of Federal Regulations;

• Training Requirements of (AHERA) Regulation;

• Asbestos Containing Materials in Schools Final Rule & Notice Title 40, Part 763, Sub-part E, Appendix C of the Code of Federal Regulations;

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1770 21ST STREET, BOULDER CO

• National Emission Standard for Hazardous Air Pollutants (NESHAPS); and

• National Emission Standard for Asbestos Title 40, Part 61, Sub-part A, Sub-part M (Revised Sub-part B) of the Code of Federal Regulations.

CDPHE: Colorado Department of Public Health and Environment, including but not limited to:

• Air Quality Control Commission, Regulation No. 8, Part B “Emissions Standards for Asbestos”; and

• Hazardous Materials and Waste Management Division, 6 CCR 1007-2, Section 5 “Asbestos Waste Management.”

STAIR

! 161 SF!

SUPPORT

! 258SF !

CONFERENCE

SUPPORT

Till]IT

CONFERENCE

TOILET C

! 68SF !

MECH

! 135SF!

CONFERENCE

(1

STORAGE

CORR

!379SF!

STORAGE

SUPPORT

Till]IT

SUPPORT

!258SF!

LEGEND

L.___J

D

ORGANIZATION BLDG GROSS PERSONNEL

1,427

1,478

CMI-Core Civic cONTRACTOR

APARTMENT

ONTRACTOR

SUPPORT

COMMUNITY

SERVICE CORRIDOR

BUILDING SUPPORT

BUILDING GROSS: 15,168 SF

FLOOR GROSS: 5,612 SF

SCALE: 1 "=1 O'

FACILITY OCCUPATION STUDY

BOULDER COUNTY

BOULDER COUNTY TRANSITION CENTER

(BCTC) - (COPPER DOOR)

1770 21st STREET

1 ST FLOOR PLAN VIEW

1-)� SURVEY DATE:

File No:

Boulder County Transition Center HOR

1/31/17 o, SHEET 1 OF 3 kemery Text Box kemery Text Box kemery Text Box 103, 104 kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box 111, 112, kemery Text Box kemery Text Box 109, kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box 67, 68 kemery Text Box 57, 58, kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box Pb1 kemery Text Box Pb2 kemery Text Box Pb3 kemery Text Box Pb4 kemery Text Box Pb5 kemery Text Box Pb6 kemery Text Box Pb7 kemery Text Box Pb8 kemery Text Box kemery Text Box kemery Rectangle kemery Text Box # = Asbestos Samples # = Paint Samples # = Roof Samples # = Asbestos Containing Material (>1% Asbestos) # = Trace Asbestos (≤1% Asbestos) kemery Text Box kemery Text Box Figure 1A Approximate Sample Locations 1770 21st Street

DN52856.000-221-R1

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DN52856.000-221-R1

kemery Text Box 122, 123 kemery Rectangle kemery Text Box # = Asbestos Samples # = Paint Samples # = Roof Samples # = Asbestos Containing Material (>1% Asbestos) # = Trace Asbestos (≤1% Asbestos) kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box 70 72 kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box 116, 117 kemery Text Box kemery Text Box kemery Text Box kemery Text Box kemery Text Box 78, 79 kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box Figure 1C Approximate Sample Locations 1770 21st Street

DN52856.000-221-R1

kemery Rectangle kemery Text Box # = Asbestos Samples # = Paint Samples # = Roof Samples # = Asbestos Containing Material (>1% Asbestos) # = Trace Asbestos (≤1% Asbestos) kemery Text Box kemery Ellipse kemery Ellipse kemery Ellipse

COPPER DOOR BUILDING

1770 21ST STREET

DN52856.000-221-R1

FIGURE 2

FLOOR 1 - TEXTURE ACM LOCATIONS

kemery Polygon kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery

= Popcorn Ceiling & ACM Wall Texture (HA 1-4)

DN52856.000-221-R1

FIGURE 3

FLOOR 2 - TEXTURE ACM LOCATIONS

kemery Polygon kemery Polygon kemery Polygon kemery Rectangle kemery

= Popcorn Ceiling & ACM Wall Texture (HA 1-4)

DN52856.000-221-R1

FIGURE 4

FLOOR 3 - TEXTURE ACM LOCATIONS

kemery Rectangle kemery Text Box = Popcorn Ceiling & ACM Wall Texture (HA 1-4) kemery Polygon kemery Polygon

Polygon

DN52856.000-221-R1

FIGURE 5

FLOOR 1 - FLOORING AND OTHER ACM LOCATIONS

kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box = 12 x 12 Brown Floor Tile (HA 13) kemery Rectangle kemery Text Box = 12 x 12 Green Floor Tile (HA 12) kemery Rectangle kemery Text Box = 12 x 12 White Floor Tile (HA 26) kemery Text Box = White Shower Tile (HA 15)

Rectangle

DN52856.000-221-R1

FIGURE 6

FLOOR 2 - FLOORING AND OTHER ACM LOCATIONS

kemery Polygon kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box = 12 x 12 Brown Floor Tile (HA 13) kemery Rectangle kemery Text Box = 12 x 12 Green Floor Tile (HA 12) kemery Rectangle kemery

= White Shower Tile (HA 15)

DN52856.000-221-R1

FIGURE 7

FLOOR 3 - FLOORING AND OTHER ACM LOCATIONS

kemery Polygon kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box = 12 x 12 Brown Floor Tile (HA 13) kemery Rectangle kemery Text Box = 12 x 12 Green Floor Tile (HA 12) kemery Rectangle kemery

= White Shower Tile (HA 15)

DN52856.000-221-R1

FIGURE 8

FLOOR 1 - OTHER ACM LOCATIONS

kemery Rectangle kemery Rectangle kemery Rectangle kemery Polygon kemery Rectangle kemery Text Box = Fire Door (HA 18) kemery Rectangle kemery Text Box = Pipe Cement (HA 42) kemery Rectangle kemery Text Box = Black Cove Base (HA 8) kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box = White Cove Base (HA 7) kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Polygon kemery Polygon kemery Rectangle kemery Rectangle kemery Polygon kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle mwardlow Rectangle mwardlow Rectangle mwardlow Rectangle mwardlow Rectangle mwardlow Line mwardlow Text Box mwardlow Line mwardlow Text Box mwardlow Text Box mwardlow Line mwardlow Text Box = Pipe Sealant Beneath Slab (HA 49) mwardlow

DN52856.000-221-

FIGURE 9

FLOOR 2 - OTHER MISC. ACM LOCATIONS

kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box = Fire Door (HA 18) kemery Rectangle kemery Text Box = Black Cove Base (HA 8) kemery Rectangle kemery

= White Cove Base (HA 7)

DN52856.000-221-R

FIGURE 10

FLOOR 3 - OTHER MISC. ACM LOCATIONS

kemery Rectangle kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Polygon kemery Rectangle kemery Polygon kemery Polygon kemery Polygon kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Rectangle kemery Text Box = Fire Door (HA 18) kemery Rectangle kemery Text Box = Black Cove Base (HA 8) kemery Rectangle kemery

= White Cove Base (HA 7)

BOULDER COUNTY OUBLIC WORK

COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

APPENDIX A

SITE PHOTOGRAPHS

CTL Project No. DN52856.000-221

Description: General view of the south side of the building

Description: General view of the south side of the building

Description: General view of the exterior of the addition

Description: General view of the north side of the building

Description: Front lobby and security office.

Description: General view of a hallway.

Description: General view of stairwell.

Description: General view of the boiler room.

Description: Example of HA-1, Popcorn Texture.

Description: Example of HA-2, Orange Peel Texture (yellow).

Description: Example of HA-3, Orange Peel Texture (white).

Description: Example of HA-4, Orange Peel Texture (green)..

Description: Example of HA-7, Cove Base w/ mastic (black).

Description: Example of HA-8, Cove Base w/ mastic (white).

Description: Example of HA-9, Joint Compound.

Description: Example of HA-18, Fire Door.

Description: Example of HA-12, Floor Tile (green).

Description: Example of HA-13, Floor Tile (brown).

Description: Example of HA-15, Shower Tile (white).

Description: Example of HA-42, Pipe Dope (white cement).

Description: Inside boiler (to the extent it could be accessed).

Description: Example of HA-49, Pipe Insulation.

Description: Example of popcorn overspray on rafters in attic.

Description: Building envelope, fiberglass insulation.

COPPER DOOR FACILITY – 1770 21ST STREET

CTL|T PROJECT NO. DN52856.000-221-R1

APPENDIX B

ASBESTOS LABORATORY RESULTS AND CHAINS OF CUSTODY

EMSL Analytical, Inc.

1010 Yuma Street Denver, CO 80204

Tel/Fax: (303) 740-5700 / (303) 741-1400 http://www.EMSL.com / denverlab@emsl.com

222601309EMSL Order:

Customer ID: CTLT34

Customer PO:

Project ID:

Attention: Phone:Benjamin Rief (303) 825-0777

Fax:CTL Thompson

Received Date:1971 West 12th Avenue 03/19/2026 9:45 AM

Analysis Date:Denver, CO 80204 03/23/2026 - 03/25/2026

Collected Date: 03/10/2026

Project: Copper Door Facility / DN52856.000-221

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

1-TXT-1

222601309-0001

None DetectedCa Carbonate

Non-fibrous (Other)

9%

91%

White

Non-Fibrous

Homogeneous

Popcorn ceiling

(white)

Inseparable paint/coating layer included in analysis.

HA: 1

1-TXT-2

222601309-0002

3% ChrysotileCa Carbonate

Non-fibrous (Other)

11%

86%

White

Non-Fibrous

Homogeneous

Popcorn ceiling

(white)

Inseparable paint/coating layer included in analysis.

HA: 1

1-TXT-3

222601309-0003

3% ChrysotileCa Carbonate

Non-fibrous (Other)

9%

88%

Beige

Non-Fibrous

Homogeneous

Popcorn ceiling

(white)

HA: 1

1-TXT-4

222601309-0004

3% ChrysotileCa Carbonate

Non-fibrous (Other)

10%

87%

Beige

Non-Fibrous

Homogeneous

Popcorn ceiling

(white)

HA: 1

1-TXT-5

222601309-0005

3% ChrysotileCa Carbonate

Non-fibrous (Other)

8%

89%

White

Non-Fibrous

Homogeneous

Popcorn ceiling

(white)

Inseparable paint / coating layer included in analysis

HA: 1

1-TXT-6

222601309-0006

3% ChrysotileCa Carbonate

Non-fibrous (Other)

8%

89%

White

Non-Fibrous

Homogeneous

Popcorn ceiling

(white)

Inseparable paint / coating layer included in analysis

HA: 1

1-TXT-7

222601309-0007

3% ChrysotileCa Carbonate

Non-fibrous (Other)

8%

89%

White

Non-Fibrous

Homogeneous

Popcorn ceiling

(white)

HA: 1

2-TXT-8-Texture

222601309-0008

2% ChrysotileCa Carbonate

Non-fibrous (Other)

6%

92%

White

Non-Fibrous

Heterogeneous

Orange peel texture

(yellow)

Multiple inseparable paint/texture layers analyzed as one.

HA: 2

2-TXT-8-Drywall

222601309-0008A

None DetectedGypsum

Non-fibrous (Other)

58%

30%

Cellulose

Glass

12%

<1%

White

Fibrous

Homogeneous

Orange peel texture

(yellow)

HA: 2

2-TXT-9-Texture

222601309-0009

2% ChrysotileCa Carbonate

Non-fibrous (Other)

6%

92%

White

Non-Fibrous

Heterogeneous

Orange peel texture

(yellow)

HA: 2

2-TXT-9-Drywall

222601309-0009A

None DetectedGypsum

Non-fibrous (Other)

60%

27%

Cellulose

Glass

13%

<1%

White

Fibrous

Homogeneous

Orange peel texture

(yellow)

HA: 2

Initial report from: 03/26/2026 09:49:36

Page 1 of 15ASB_PLM_0008_0002 - 2.31 Printed: 3/26/2026 7:49 AM

Tel/Fax: (303) 740-5700 / (303) 741-1400 http://www.EMSL.com / denverlab@emsl.com

222601309EMSL Order:

Customer ID: CTLT34

Customer PO:

Project ID:

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

2-TXT-10-Texture

222601309-0010

3% ChrysotileCa Carbonate

Non-fibrous (Other)

6%

91%

White

Non-Fibrous

Heterogeneous

Orange peel texture

(yellow)

Multiple inseparable paint/texture layers analyzed as one.

HA: 2

2-TXT-10-Drywall

222601309-0010A

None DetectedGypsum

Non-fibrous (Other)

60%

28%

Cellulose

Glass

12%

<1%

Gray/White

Fibrous

Homogeneous

Orange peel texture

(yellow)

HA: 2

2-TXT-11-Texture

222601309-0011

3% ChrysotileCa Carbonate

Non-fibrous (Other)

7%

90%

White

Non-Fibrous

Heterogeneous

Orange peel texture

(yellow)

Multiple inseparable paint/texture layers analyzed as one.

HA: 2

2-TXT-11-Drywall

222601309-0011A

None DetectedGypsum

Non-fibrous (Other)

60%

28%

Cellulose

Glass

12%

<1%

Gray/White

Fibrous

Homogeneous

Orange peel texture

(yellow)

HA: 2

2-TXT-12

222601309-0012

None DetectedNon-fibrous (Other)100%White

Non-Fibrous

Homogeneous

Orange peel texture

(yellow) only paint present

HA: 2

2-TXT-13

222601309-0013

2% ChrysotileCa Carbonate

Non-fibrous (Other)

10%

88%

White

Non-Fibrous

Homogeneous

Orange peel texture

(yellow)

HA: 2

2-TXT-14

222601309-0014

2% ChrysotileCa Carbonate

Non-fibrous (Other)

10%

88%

White

Non-Fibrous

Homogeneous

Orange peel texture

(yellow)

HA: 2

3-TXT-15

222601309-0015

2% ChrysotileNon-fibrous (Other)98%Beige

Non-Fibrous

Heterogeneous

Orange peel texture

(white)

Multiple inseparable paint/texture layers analyzed as one.

HA: 3

3-TXT-16-Texture

222601309-0016

2% ChrysotileCa Carbonate

Non-fibrous (Other)

7%

91%

Beige

Non-Fibrous

Heterogeneous

Orange peel texture

(white)

Multiple inseparable paint/texture layers analyzed as one.

HA: 3

3-TXT-16-Drywall

222601309-0016A

None DetectedGypsum

Non-fibrous (Other)

60%

27%

Cellulose13%White

Fibrous

Homogeneous

Orange peel texture

(white)

HA: 3

3-TXT-17-Texture

222601309-0017

2% ChrysotileCa Carbonate

Non-fibrous (Other)

6%

92%

White

Non-Fibrous

Heterogeneous

Orange peel texture

(white)

Multiple inseparable paint/texture layers analyzed as one.

HA: 3

3-TXT-17-Drywall

222601309-0017A

None DetectedGypsum

Non-fibrous (Other)

60%

29%

Cellulose

Glass

11%

<1%

White

Fibrous

Homogeneous

Orange peel texture

(white)

HA: 3

3-TXT-18-Texture

222601309-0018

2% ChrysotileCa Carbonate

Non-fibrous (Other)

7%

91%

White

Non-Fibrous

Heterogeneous

Orange peel texture

(white)

HA: 3

Page 2 of 15ASB_PLM_0008_0002 - 2.31 Printed: 3/26/2026 7:49 AM

Tel/Fax: (303) 740-5700 / (303) 741-1400 http://www.EMSL.com / denverlab@emsl.com

222601309EMSL Order:

Customer ID: CTLT34

Customer PO:

Project ID:

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

3-TXT-18-Drywall

222601309-0018A

None DetectedGypsum

Non-fibrous (Other)

60%

30%

Cellulose

Glass

10%

<1%

White

Fibrous

Homogeneous

Orange peel texture

(white)

HA: 3

3-TXT-19-Texture

222601309-0019

None DetectedCa Carbonate

Non-fibrous (Other)

10%

90%

White

Non-Fibrous

Homogeneous

Orange peel texture

(white)

HA: 3

3-TXT-19-Drywall

222601309-0019A

None DetectedGypsum

Non-fibrous (Other)

60%

30%

Cellulose10%White

Fibrous

Heterogeneous

Orange peel texture

(white)

HA: 3

3-TXT-20-Texture

222601309-0020

2% ChrysotileCa Carbonate

Non-fibrous (Other)

10%

88%

White

Non-Fibrous

Homogeneous

Orange peel texture

(white)

HA: 3

3-TXT-20-Drywall

222601309-0020A

None DetectedGypsum

Non-fibrous (Other)

60%

30%

Cellulose10%White

Fibrous

Heterogeneous

Orange peel texture

(white)

HA: 3

3-TXT-21-Texture

222601309-0021

2% ChrysotileCa Carbonate

Non-fibrous (Other)

10%

88%

White

Non-Fibrous

Homogeneous

Orange peel texture

(white)

Inseparable paint / coating layer included in analysis

HA: 3

3-TXT-21-Drywall

222601309-0021A

None DetectedGypsum

Non-fibrous (Other)

60%

30%

Cellulose

Glass

10%

<1%

White

Fibrous

Heterogeneous

Orange peel texture

(white)

HA: 3

4-TXT-22

222601309-0022

2% ChrysotileCa Carbonate

Non-fibrous (Other)

7%

91%

White

Non-Fibrous

Heterogeneous

Orange peel texture

(green)

HA: 4

4-TXT-23

222601309-0023

2% ChrysotileCa Carbonate

Non-fibrous (Other)

6%

92%

White

Non-Fibrous

Heterogeneous

Orange peel texture

(green)

Multiple inseparable paint/texture layers analyzed as one.

HA: 4

4-TXT-24-Texture

222601309-0024

None DetectedCa Carbonate

Non-fibrous (Other)

10%

90%

White

Non-Fibrous

Homogeneous

Orange peel texture

(green)

Inseparable paint / coating layer included in analysis

HA: 4

4-TXT-24-Drywall

222601309-0024A

None DetectedGypsum

Non-fibrous (Other)

60%

30%

Cellulose10%Pink/Beige

Fibrous

Heterogeneous

Orange peel texture

(green)

HA: 4

5-CB-25

222601309-0025

None DetectedNon-fibrous (Other)100%Beige

Non-Fibrous

Homogeneous

Cove base w/ adhesive (gray)

No cove base present-adhesive analyzed.

HA: 5

5-CB-26

222601309-0026

None DetectedNon-fibrous (Other)100%Beige

Non-Fibrous

Homogeneous

Cove base w/ adhesive (gray) only adhesive present

HA: 5

Page 3 of 15ASB_PLM_0008_0002 - 2.31 Printed: 3/26/2026 7:49 AM

Tel/Fax: (303) 740-5700 / (303) 741-1400 http://www.EMSL.com / denverlab@emsl.com

222601309EMSL Order:

Customer ID: CTLT34

Customer PO:

Project ID:

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

6-CB-27-Cove Base

222601309-0027

None DetectedNon-fibrous (Other)100%Green/Beige

Non-Fibrous

Homogeneous

Cove base w/ adhesive (green)

HA: 6

6-CB-27-Adhesive

222601309-0027A

None DetectedNon-fibrous (Other)100%Brown

Non-Fibrous

Homogeneous

Cove base w/ adhesive (green)

HA: 6

6-CB-28-Cove Base

222601309-0028

None DetectedNon-fibrous (Other)100%Green

Non-Fibrous

Homogeneous

Cove base w/ adhesive (green)

HA: 6

6-CB-28-Mastic

222601309-0028A

None DetectedNon-fibrous (Other)98%Wollastonite2%Brown

Non-Fibrous

Homogeneous

Cove base w/ adhesive (green)

HA: 6

7-CB-29-Cove Base

222601309-0029

None DetectedNon-fibrous (Other)100%Black

Non-Fibrous

Homogeneous

Cove base w/ adhesive (black)

HA: 7

7-CB-29-Adhesive

222601309-0029A

None DetectedNon-fibrous (Other)100%Yellow

Non-Fibrous

Homogeneous

Cove base w/ adhesive (black)

Inseparable mud layer included in analysis.

HA: 7

7-CB-30-Mastic

222601309-0030

None DetectedNon-fibrous (Other)100%Tan

Non-Fibrous

Homogeneous

Cove base w/ adhesive (black) no cove base present

HA: 7

7-CB-30-Mud

222601309-0030A

2% ChrysotileCa Carbonate

Non-fibrous (Other)

8%

90%

White

Non-Fibrous

Homogeneous

Cove base w/ adhesive (black)

HA: 7

8-CB-31-Cove Base

222601309-0031

None DetectedNon-fibrous (Other)100%White

Non-Fibrous

Homogeneous

Cove base w/ adhesive (white)

HA: 8

8-CB-31-Adhesive

222601309-0031A

None DetectedNon-fibrous (Other)100%Yellow

Non-Fibrous

Heterogeneous

Cove base w/ adhesive (white)

Inseparable paint and mud layers included in analysis.

HA: 8

8-CB-32-Cove Base

222601309-0032

None DetectedNon-fibrous (Other)100%White

Non-Fibrous

Homogeneous

Cove base w/ adhesive (white)

HA: 8

8-CB-32-Mastic

222601309-0032A

None DetectedNon-fibrous (Other)100%Tan/Beige

Non-Fibrous

Homogeneous

Cove base w/ adhesive (white)

HA: 8

8-CB-32-Mud

222601309-0032B

2% ChrysotileCa Carbonate

Non-fibrous (Other)

6%

92%

White

Non-Fibrous

Homogeneous

Cove base w/ adhesive (white)

Inseparable paint / coating layer included in analysis

HA: 8

9-JC-33

222601309-0033

None DetectedGypsum

Non-fibrous (Other)

60%

25%

Cellulose15%Gray

Fibrous

Homogeneous

Joint compound

Page 4 of 15ASB_PLM_0008_0002 - 2.31 Printed: 3/26/2026 7:49 AM

Tel/Fax: (303) 740-5700 / (303) 741-1400 http://www.EMSL.com / denverlab@emsl.com

222601309EMSL Order:

Customer ID: CTLT34

Customer PO:

Project ID:

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

No joint compound present-drywall analyzed.

HA: 9

9-JC-34-Joint

Compound

222601309-0034

2% ChrysotileCa Carbonate

Non-fibrous (Other)

10%

88%

White

Non-Fibrous

Homogeneous

Joint compound

Inseparable paint / coating layer included in analysis

HA: 9

9-JC-34-Tape

222601309-0034A

None DetectedNon-fibrous (Other)3%Cellulose97%White/Beige

Fibrous

Homogeneous

Joint compound

HA: 9

10-T-35-Floor Tile

222601309-0035

None DetectedNon-fibrous (Other)100%Beige

Non-Fibrous

Homogeneous

Laminate tile 12x12

(off white)

HA: 10

10-T-35-Adhesive

222601309-0035A

None DetectedNon-fibrous (Other)100%Gray/Yellow

Non-Fibrous

Heterogeneous

Laminate tile 12x12

(off white)

Adhesive and leveler are inseparable and were analyzed as one.

HA: 10

10-T-36-Floor Tile

222601309-0036

None DetectedNon-fibrous (Other)100%White

Non-Fibrous

Homogeneous

Laminate tile 12x12

(off white)

HA: 10

10-T-36-Adhesive

222601309-0036A

None DetectedNon-fibrous (Other)100%Brown/Tan

Non-Fibrous

Homogeneous

Laminate tile 12x12

(off white)

HA: 10

10-T-36-Leveler

222601309-0036B

None DetectedNon-fibrous (Other)100%Gray

Non-Fibrous

Homogeneous

Laminate tile 12x12

(off white)

HA: 10

11-T-37-Floor Tile

222601309-0037

None DetectedNon-fibrous (Other)100%Gray

Non-Fibrous

Homogeneous

Laminate tile 12x12

(light gray)

HA: 11

11-T-37-Adhesive

222601309-0037A

None DetectedNon-fibrous (Other)100%Gray/Yellow

Non-Fibrous

Heterogeneous

Laminate tile 12x12

(light gray)

Adhesive and leveler are inseparable and were analyzed as one.

HA: 11

11-T-38-Floor Tile

222601309-0038

None DetectedNon-fibrous (Other)100%Gray

Non-Fibrous

Homogeneous

Laminate tile 12x12

(light gray)

HA: 11

11-T-38-Adhesive

222601309-0038A

None DetectedNon-fibrous (Other)100%Brown/Tan

Non-Fibrous

Homogeneous

Laminate tile 12x12

(light gray)

HA: 11

11-T-38-Leveler

222601309-0038B

None DetectedCa Carbonate

Non-fibrous (Other)

4%

96%

Gray

Non-Fibrous

Homogeneous

Laminate tile 12x12

(light gray)

Result includes a small amount of inseparable attached material

HA: 11

12-T-39-Floor Tile

222601309-0039

5% ChrysotileNon-fibrous (Other)95%Beige

Non-Fibrous

Homogeneous

Laminate tile 12x12

(green)

HA: 12

Page 5 of 15ASB_PLM_0008_0002 - 2.31 Printed: 3/26/2026 7:49 AM

Tel/Fax: (303) 740-5700 / (303) 741-1400 http://www.EMSL.com / denverlab@emsl.com

222601309EMSL Order:

Customer ID: CTLT34

Customer PO:

Project ID:

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

12-T-39-Mastic

222601309-0039A

4% ChrysotileNon-fibrous (Other)96%Black

Non-Fibrous

Homogeneous

Laminate tile 12x12

(green)

HA: 12

12-T-39-Leveler

222601309-0039B

None DetectedCa Carbonate

Non-fibrous (Other)

5%

95%

Tan

Non-Fibrous

Homogeneous

Laminate tile 12x12

(green)

HA: 12

12-T-40-Tile

222601309-0040

4% ChrysotileNon-fibrous (Other)96%Green

Non-Fibrous

Homogeneous

Laminate tile 12x12

(green)

HA: 12

12-T-40-Mastic

222601309-0040A

5% ChrysotileNon-fibrous (Other)95%Black

Non-Fibrous

Homogeneous

Laminate tile 12x12

(green)

HA: 12

13-T-41-Floor Tile

222601309-0041

5% ChrysotileNon-fibrous (Other)95%Beige

Non-Fibrous

Homogeneous

Laminate tile 12x12

(brown)

HA: 13

13-T-41-Mastic

222601309-0041A

5% ChrysotileNon-fibrous (Other)95%Black

Non-Fibrous

Homogeneous

Laminate tile 12x12

(brown)

HA: 13

13-T-41-Leveler

222601309-0041B

None DetectedCa Carbonate

Non-fibrous (Other)

3%

97%

Tan

Non-Fibrous

Homogeneous

Laminate tile 12x12

(brown)

HA: 13

13-T-42-Tile

222601309-0042

5% ChrysotileNon-fibrous (Other)95%Brown/Beige

Non-Fibrous

Homogeneous

Laminate tile 12x12

(brown)

HA: 13

13-T-42-Mastic

222601309-0042A

7%…