ATT-PFMD-060826-14-Environmental Report - SHR HDDC Recreation Cntr Yard Dvdrs.pdf

Converse Consultants Geotechnical Engineering, Environmental & Groundwater Science, Inspection & Testing Services

MAILING ADDRESS: 717 South Myrtle Avenue, Monrovia, CA 91016

8333 Foothill Boulevard, Suite 104, Rancho Cucamonga, California 91730 Telephone: (909) 796-0544 ♦ www.converseconsultants.com

September 26, 2025

Ms. Elsy Banks Project Manager III San Bernardino County 620 South E Street San Bernardino, California 92415

Subject: LIMITED ASBESTOS and LEAD-BASE PAINT SURVEY REPORT

High Desert Detention Center 9438 Commerce Way Adelanto, California Converse Project No. 22-16-180-29

Ms. Banks:

Provided is our report of the Limited Asbestos & Lead-Based Paint (LBP) Survey completed on September 12, 2025, for the referenced site. Our work was completed in general accordance with our proposal dated August 6, 2025.

The Scope of Services was completed by, or under the supervision, of the following Converse employees:

Name Asbestos Cert. No.

CDPH Cert. No. Project Responsibility Contact Number

Norman Eke

(NSE)

CAC #96-2093 --

Project Management

Report QA/QC 626-930-1260

Rodney Stansfield (RDS)

CAC #97-2309

Inspector/Assessor

#4397

ASB Inspection & Sampling

LBP Survey 714-333-8222

Kaspar Wittlinger

(KW)

CSST #22-7016

Sampling Tech

#11395

ASB Inspection and Sampling

Report Generation 714-932-2154

All bulk asbestos samples were submitted and analyzed by the following laboratory:

• Eurofins Built Environment Testing (800-651-4802) 931 Corporate Center Drive Pomona, CA 91768

NVLAP #600282-0

Copies of applicable staff and laboratory certifications have been attached to this letter.

Limited Asbestos and LBP Survey 9438 Commerce Way, Adelanto, California

September 26, 2025

Copyright 2025 Converse Consultants

ASBESTOS

Prior to sampling, Converse visually surveyed the project areas for suspect asbestos-containing materials (ACMs) and homogeneous areas (areas that have uniform color, texture, and appearance). Suspect materials were divided into friable (crushable to dust) and non-friable materials, and placed in one of the following Environmental Protection Agency (EPA) categories:

• Surfacing Materials (sprayed or troweled-on materials)

• Thermal Systems Insulations (materials generally applied to various mechanical systems)

• Miscellaneous Materials (any materials which do not fit in the above categories)

The strategy for the collection of asbestos samples was in general accordance with the EPA guidance document “Asbestos in Buildings: Simplified Sampling Scheme for Friable Surfacing Materials”, EPA 560/5-85-030a, October 1985, 40 CFR 763 (AHERA); National Exposure Standards for Hazardous Air Pollutants (NESHAP), 40 CFR Part 61; and South Coast Air Quality Management District, Rule 1403, Asbestos Emissions From Demolition/Renovation Activities, Amended October 5, 2007.

Bulk samples were collected of the following types of materials:

• Spray-on fireproofing • 2x4 ceiling panels

• Vinyl floor tile and associated mastic • Concrete and mortar

• Texture coating on concrete • Baseboard mastic

• Stucco • Drywall/joint compound

The bulk samples were analyzed by Polarized Light Microscopy (PLM) in accordance with EPA Test Method 600/R-93/116. A summary of the types of suspect materials sampled along with the analytical results is presented in the following table.

Table 1 – Suspect Materials Sampled & Analytical Results Sample

No.

Suspect Material

% Asbestos Detected

Fri or NF Material

I or D Condition

SF

01-03

Concrete floor ND NF I 28,000

Comments:

Located in the western and in the eastern recreation yard.

04-06

Drywall/joint compound ND NF I 600

Comments:

Located around the control rooms’ windows, up to one foot below the deck. On metal studs.

07-09

CMU mortar ND NF I 4,000

Comments:

Located in the western and in the eastern recreation yard.

10-12

Gray spray-on fireproofing ND Fri I 600

Comments:

Located on structural steel of the control rooms and the adjacent units.

Table 1 – Suspect Materials Sampled & Analytical Results Sample

No.

Suspect Material

% Asbestos Detected

Fri or NF Material

I or D Condition

SF

13-15

2x4 gray ceiling panels ND Fri I 80

Comments:

Located above the control rooms’ windows. Suspended system.

16-18

Exterior stucco ND NF I 400

Comments:

Located in the western and in the eastern recreation yard.

19-21

Concrete wall ND NF I 30,000

Comments: --

22-24

12x12 green vinyl floor tile & beige mastic

ND NF I 60

Comments:

Located below the control rooms’ windows. On concrete substrate.

25-27

Grey texture coating on concrete floor

ND NF I 7,390

Comments:

Located in the eastern recreation yard only.

Beige baseboard mastic ND NF I 1

Comments:

On CMU substrate. Baseboard is non-suspect vinyl. Patch only.

Additional Comments:

The buildings were occupied at the time of the survey; therefore, this was a non-destructive survey.

All materials were generally in good condition at the time of the survey. No obvious vandalism, fire, renovation, demolition or structural damage was observed.

The sampled suspect materials did not contain asbestos.

In the event that other suspect ACMs are uncovered during renovation activities, those suspect materials should be inspected, sampled, and analyzed for asbestos content. If not sampled and analyzed, these new suspect materials will need to be assumed positive for asbestos.

The analytical report and chain of custody documentation are attached to this letter report.

A sample location map is also attached to this letter report.

LEAD-BASED PAINTS (LBPs) OR LEAD-CONTAINING MATERIALS (LCMs)

Prior to sampling, Converse visually surveyed the project areas for painted or ceramic building components. Our sampling methodology generally followed the “Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing” published by the

LEGEND

Fri: Friable Material ND: None Detected

NF: Non-Friable Material I: Intact Condition

D: Damaged Condition SF: Square Footage

Department of Housing and Urban Development (HUD) in 1995. However, similarly painted building components were treated as homogenous throughout each building.

The LBP Survey was conducted using a Viken Pb200e X-ray fluorescence (XRF) device.

The detection level for lead was set at 1.0 milligrams per square centimeter (mg/cm²).

Suspect components surveyed included:

Interior Components Exterior Components

• Walls • Walls, wall joints, and floors

• I-Beams • Exercise units

• Windows and associated components • Doors and associated components

• Doors and associated components • Windows and associated components

No LBPs were detected during this survey. All materials were observed to be in intact condition at the time of the survey.

The XRF Summary Table is attached to this letter report. This table provides a complete list of the components surveyed.

Although painted materials did not meet the criteria for LBP, concentrations of lead were detected in these materials. Title 8 CCR 1532.1 (Cal/OSHA Lead regulation) may require workers that perform work that disturbs these materials, such as manual demolition, manual scraping, sanding of painted surfaces, etc. to undergo an exposure assessment including, but not limited to, air monitoring of the breathing zone. Other requirements including training and medical surveillance may be necessary per the lead regulation. Employers are responsible for worker exposure in relation to lead.

In the event that other suspect LBPs are observed during the renovation activities that were not previously sampled, these materials should be assumed to contain lead in concentrations exceeding 1.0 mg/cm2, until such time that they can be sampled and evaluated for lead content.

CLOSURE

This report is for the sole benefit and exclusive use of the County of San Bernardino (herein referred to as Client) in accordance with the terms and conditions of our contract under which these services have been provided. Its preparation has been in accordance with generally accepted environmental practices. No other warranty, either express or implied, is made. The Scope of Services associated with the report was designed solely in accordance with the objectives, schedule, budget, and risk-management preferences of Client.

This letter report should not be regarded as a guarantee that no further ACMs or LBPs, beyond that which could be detected within the scope of this survey, are present at the property. Converse makes no warranties or guarantees as to the accuracy or completeness of information provided or compiled by others. It is not possible to absolutely confirm that no ACMs or LBPs exist at the property. If none are identified as part of a limited scope of work, such a conclusion should not be construed as a guaranteed absence of such materials, but merely the results of the evaluation of the property at the time of the survey.

Also, events may occur after the survey, which may result in contamination of the property.

Additional information, which was not found or available to Converse at the time of report preparation, may result in a modification of the conclusions and recommendations presented.

Any reliance on this report by Third Parties shall be at the Third Party’s sole risk.

We appreciate the opportunity to be of service to you. If you should have any questions or comments regarding the results, please contact Norman Eke at (626) 930-1260.

CONVERSE CONSULTANTS

Rodney Stansfield Normand S. Eke CDPH Lead Inspector/Assessor, #4397 Certified Asbestos Consultant, #96-2093 Sr. Staff Professional Managing Officer/COB

Attached: Certifications

Asbestos - Analytical Report & Sample Location Map LBPs – XRF Summary Table

Certifications

Converse Staff & Laboratory

United States Department of Commerce National Institute of Standards and Technology

Certificate of Accreditation to ISO/IEC 17025:2017

NVLAP LAB CODE: 600282-0

Eurofins Built Environment Testing West- Pomona, CA Pomona, CA is accredited by the National Voluntary Laboratory Accreditation Program for specific services, listed on the Scope of Accreditation, for:

Asbestos Fiber Analysis

2025-07-01 through 2026-06-30 Effective Dates For the National Voluntary Laboratory Accreditation Program

This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017.

This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to joint ISO-ILAC-IAF Communique on ISO/IEC 17025).

SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017

For the National Voluntary Laboratory Accreditation Program

Effective

National Voluntary Laboratory Accreditation Program

2025-07-01 through 2026-06-30

Eurofins Built Environment Testing West- Pomona, CA 931 Corporate Center Drive

Pomona, CA 91768 Quynh Nguyen

Phone: 800-651-4802 Email: quynh.nguyen@et.eurofinsus.com https://www.eurofinsus.com/environment-testing/built-environment

ASBESTOS FIBER ANALYSIS NVLAP LAB CODE 600282-0

Bulk Asbestos Analysis

Code Description 18/A01 EPA -- 40 CFR Appendix E to Subpart E of Part 763, Interim Method of the Determination of

Asbestos in Bulk Insulation Samples

18/A03 EPA 600/R-93/116: Method for the Determination of Asbestos in Bulk Building Materials

Asbestos

Analytical Report & Chain of Custody Sample Location Map

Approved by:

Approved Signatory Peter Mai

Report for:

Mr. Norman Eke Converse Consultants, Monrovia & Costa Mesa 717 S. Myrtle Avenue Monrovia, CA 91016

Regarding:

Eurofins Built Environment Testing West, LLC Project: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

EML ID: 4227801

All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. The results relate only to the samples as received and tested. The results include an inherent uncertainty of measurement associated with estimating percentages by polarized light microscopy. Measurement uncertainty data for sample results with >1% asbestos concentration can be provided when requested.

Eurofins Built Environment Testing West, LLC ("the Company"), a member of the Eurofins Built Environment Testing group of companies, shall have no liability to the client or the client's customer with respect to decisions or recommendations made, actions taken or courses of conduct implemented by either the client or the client's customer as a result of or based upon the Test Results. In no event shall the Company be liable to the client with respect to the Test Results except for the Company's own willful misconduct or gross negligence nor shall the Company be liable for incidental or consequential damages or lost profits or revenues to the fullest extent such liability may be disclaimed by law, even if the Company has been advised of the possibility of such damages, lost profits or lost revenues. In no event shall the Company's liability with respect to the Test Results exceed the amount paid to the Company by the client therefor.

Dates of Analysis:

Asbestos PLM: 09-22-2025

Service SOPs: Asbestos PLM (EPA 40CFR App E to Sub E of Part 763 & EPA METHOD 600/R-93-116, SOP EB-AS-S-1267) NVLAP Lab Code 600282-0

EMLab ID: 4227801, Page 1 of 20Eurofins Built Environment Testing West, LLC

Eurofins Built Environment Testing West, LLC 931 Corporate Center Drive, Pomona, CA 91768

(833) 465-5857 www.eurofinsus.com/Built Client: Converse Consultants, Monrovia & Costa Mesa C/O: Mr. Norman Eke Re: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

Date of Sampling: 09-12-2025 Date of Receipt: 09-15-2025 Date of Report: 09-22-2025

ASBESTOS PLM REPORT

Total Samples Submitted: 28 Total Samples Analyzed: 28

Total Samples with Layer Asbestos Content > 1%: 0

Location: 01, [Concrete Floor] West Yard, Center Lab ID-Version‡: 21141442-1

Sample Layers Asbestos Content Gray Concrete Floor ND

Sample Composite Homogeneity: Good

Location: 02, [Concrete Floor] East Yard, Center Lab ID-Version‡: 21141443-1

Sample Layers Asbestos Content Gray Concrete Floor ND

Sample Composite Homogeneity: Good

Location: 03, [Concrete Floor] East Yard, Northeast by Phone Lab ID-Version‡: 21141444-1

Sample Layers Asbestos Content Gray Concrete Floor ND

Sample Composite Homogeneity: Good

Location: 04, [Drywall & Joint Compound] Unit 1 Control Room, East, By Large Window Lab ID-Version‡: 21141445-1

Sample Layers Asbestos Content White Joint Compound ND

Brown Tape ND White Drywall ND

Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good

EMLab ID: 4227801, Page 2 of 20Eurofins Built Environment Testing West, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x".

(833) 465-5857 www.eurofinsus.com/Built Client: Converse Consultants, Monrovia & Costa Mesa C/O: Mr. Norman Eke Re: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

Date of Sampling: 09-12-2025 Date of Receipt: 09-15-2025 Date of Report: 09-22-2025

ASBESTOS PLM REPORT

Location: 05, [Drywall & Joint Compound] Unit 2 Control Room, West Above Large Window Lab ID-Version‡: 21141446-1

Sample Layers Asbestos Content White Joint Compound ND

Brown Tape ND White Drywall ND

Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good

Location: 06, [Drywall & Joint Compound] Unit 2 Control Room, West, Beside Large Window Lab ID-Version‡: 21141447-1

Sample Layers Asbestos Content White Joint Compound ND

Brown Tape ND White Drywall ND

Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good

Location: 07, [CMU Mortar] West Yard, West by Toilet Lab ID-Version‡: 21141448-1

Sample Layers Asbestos Content Gray Mortar ND

Sample Composite Homogeneity: Good

Location: 08, [CMU Mortar] East Yard, Northeast Side Lab ID-Version‡: 21141449-1

Sample Layers Asbestos Content Gray Mortar ND

Sample Composite Homogeneity: Good

EMLab ID: 4227801, Page 3 of 20Eurofins Built Environment Testing West, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(833) 465-5857 www.eurofinsus.com/Built Client: Converse Consultants, Monrovia & Costa Mesa C/O: Mr. Norman Eke Re: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

Date of Sampling: 09-12-2025 Date of Receipt: 09-15-2025 Date of Report: 09-22-2025

ASBESTOS PLM REPORT

Location: 09, [CMU Mortar] East Yard, West Lab ID-Version‡: 21141450-1

Sample Layers Asbestos Content Gray Mortar ND

Sample Composite Homogeneity: Good

Location: 10, [Grey Spray-on Fireproofing] West Yard, Control Room, East Lab ID-Version‡: 21141451-1

Sample Layers Asbestos Content Gray Fireproofing ND

Composite Non-Asbestos Content: 90% Glass Fibers Sample Composite Homogeneity: Good

Location: 11, [Grey Spray-on Fireproofing] East Yard, Control Room, West Lab ID-Version‡: 21141452-1

Sample Layers Asbestos Content Gray Fireproofing ND

Composite Non-Asbestos Content: 90% Glass Fibers Sample Composite Homogeneity: Good

Location: 12, [Grey Spray-on Fireproofing] East Yard, Control Room, West Lab ID-Version‡: 21141453-1

Sample Layers Asbestos Content Gray Fireproofing ND

Composite Non-Asbestos Content: 90% Glass Fibers Sample Composite Homogeneity: Good

Location: 13, [2x4 Grey Ceiling Panels] Unit 2, Control Room, West Lab ID-Version‡: 21141454-1

Sample Layers Asbestos Content Gray Ceiling Tile / Panel ND

Composite Non-Asbestos Content: 75% Cellulose 20% Glass Fibers

Sample Composite Homogeneity: Good

EMLab ID: 4227801, Page 4 of 20Eurofins Built Environment Testing West, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(833) 465-5857 www.eurofinsus.com/Built Client: Converse Consultants, Monrovia & Costa Mesa C/O: Mr. Norman Eke Re: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

Date of Sampling: 09-12-2025 Date of Receipt: 09-15-2025 Date of Report: 09-22-2025

ASBESTOS PLM REPORT

Location: 14, [2x4 Grey Ceiling Panels] Unit 2, Control Room, West Lab ID-Version‡: 21141455-1

Sample Layers Asbestos Content Gray Ceiling Tile / Panel ND

Composite Non-Asbestos Content: 75% Cellulose 20% Glass Fibers

Sample Composite Homogeneity: Good

Location: 15, [2x4 Grey Ceiling Panels] Unit 1, Control Room, East Lab ID-Version‡: 21141456-1

Sample Layers Asbestos Content Gray Ceiling Tile / Panel ND

Composite Non-Asbestos Content: 75% Cellulose 20% Glass Fibers

Sample Composite Homogeneity: Good

Location: 16, [Exterior Stucco] West Yard, Northwest Side Lab ID-Version‡: 21141457-1

Sample Layers Asbestos Content White Stucco ND Gray Stucco ND

Sample Composite Homogeneity: Good

Location: 17, [Exterior Stucco] East Yard, Southeast Side Lab ID-Version‡: 21141458-1

Sample Layers Asbestos Content White Stucco ND Gray Stucco ND

Sample Composite Homogeneity: Good

EMLab ID: 4227801, Page 5 of 20Eurofins Built Environment Testing West, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(833) 465-5857 www.eurofinsus.com/Built Client: Converse Consultants, Monrovia & Costa Mesa C/O: Mr. Norman Eke Re: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

Date of Sampling: 09-12-2025 Date of Receipt: 09-15-2025 Date of Report: 09-22-2025

ASBESTOS PLM REPORT

Location: 18, [Exterior Stucco] East Yard, Southeast Side Lab ID-Version‡: 21141459-1

Sample Layers Asbestos Content White Stucco ND Gray Stucco ND

Sample Composite Homogeneity: Good

Location: 19, [Concrete Wall] West Yard, Northwest Side Lab ID-Version‡: 21141460-1

Sample Layers Asbestos Content Gray Concrete Wall ND

Sample Composite Homogeneity: Good

Location: 20, [Concrete Wall] East Yard, Northwest Lab ID-Version‡: 21141461-1

Sample Layers Asbestos Content Gray Concrete Wall ND

Sample Composite Homogeneity: Good

Location: 21, [Concrete Wall] East Yard, Southeast Corner Lab ID-Version‡: 21141462-1

Sample Layers Asbestos Content Gray Concrete Wall ND

Sample Composite Homogeneity: Good

EMLab ID: 4227801, Page 6 of 20Eurofins Built Environment Testing West, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(833) 465-5857 www.eurofinsus.com/Built Client: Converse Consultants, Monrovia & Costa Mesa C/O: Mr. Norman Eke Re: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

Date of Sampling: 09-12-2025 Date of Receipt: 09-15-2025 Date of Report: 09-22-2025

ASBESTOS PLM REPORT

Location: 22, [12x12 Green Vinyl Floor Tiles & Beige Mastic] West Yard, Control Room, East by Window Lab ID-Version‡: 21141463-1

Sample Layers Asbestos Content Green Tile ND

Beige Mastic ND Sample Composite Homogeneity: Good

Location: 23, [12x12 Green Vinyl Floor Tiles & Beige Mastic] East Yard, Control Room, West by Window Lab ID-Version‡: 21141464-1

Sample Layers Asbestos Content Green Tile ND

Beige Mastic ND Sample Composite Homogeneity: Good

Location: 24, [12x12 Green Vinyl Floor Tiles & Beige Mastic] East Yard, Control Room, West by Window Lab ID-Version‡: 21141465-1

Sample Layers Asbestos Content Green Tile ND

Beige Mastic ND Sample Composite Homogeneity: Good

Location: 25, [Grey Texture Coating on Concrete] East Yard, Center, Floor Lab ID-Version‡: 21141466-1

Sample Layers Asbestos Content Gray Texture Coating ND

Sample Composite Homogeneity: Good

EMLab ID: 4227801, Page 7 of 20Eurofins Built Environment Testing West, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(833) 465-5857 www.eurofinsus.com/Built Client: Converse Consultants, Monrovia & Costa Mesa C/O: Mr. Norman Eke Re: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

Date of Sampling: 09-12-2025 Date of Receipt: 09-15-2025 Date of Report: 09-22-2025

ASBESTOS PLM REPORT

Location: 26, [Grey Texture Coating on Concrete] East Yard, Center, Floor Lab ID-Version‡: 21141467-1

Sample Layers Asbestos Content Gray Texture Coating ND

Sample Composite Homogeneity: Good

Location: 27, [Grey Texture Coating on Concrete] East Yard, Center, Floor Lab ID-Version‡: 21141468-1

Sample Layers Asbestos Content Gray Texture Coating ND

Sample Composite Homogeneity: Good

Location: 28, [Beige Baseboard Mastic] Unit 1 Control Room, East, Near Window Lab ID-Version‡: 21141469-1

Sample Layers Asbestos Content Beige Baseboard Mastic ND

Sample Composite Homogeneity: Good

EMLab ID: 4227801, Page 8 of 20Eurofins Built Environment Testing West, LLC

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam.

Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is

(833) 465-5857 www.eurofinsus.com/Built Client: Converse Consultants, Monrovia & Costa Mesa C/O: Mr. Norman Eke Re: SB County / High Desert Detention Ctr; 9438 Commerce Way, Adelanto, CA 92301

Date of Sampling: 09-12-2025 Date of Receipt: 09-15-2025 Date of Report: 09-22-2025

ASBESTOS PLM REPORT

PROJECT ANALYST AND SIGNATORY REPORT

Project Analyst

The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified.

‡ A "Version" indicated by -"x" after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of "x".

Analyst: Peter Mai

EMLab ID: 4227801, Page 9 of 20Eurofins Built Environment Testing West, LLC

Pa ge of

LBP

XRF Summary Table

Viken XRF Pb200e Date: September 12, 2025

XRF Summary table SB County - High Desert Det Ctr

Action Level: 1.0 mg/cm2

Reading

No.

Exterior/Int erior Location Component Substrate Side Color Condition

Pb Conc.

(mg/cm2) Result

1 1.1 Positive

2 1.1 Positive

3 1.1 Positive

4 Exterior Court Yard Wall Concrete North Beige Intact 0.3 Negative

5 Exterior Court Yard Wall Concrete North Brown Intact 0.4 Negative

6 Exterior Court Yard Door Metal North Black Intact 0.1 Negative

7 Exterior Court Yard Door Frame Metal North Black Intact 0.4 Negative

8 Exterior Court Yard Door Frame Metal North Black Intact 0.5 Negative

9 Exterior Court Yard Door Metal North Black Intact 0.1 Negative

10 Exterior Court Yard Joint Metal North Beige Intact 0 Negative

11 Exterior Court Yard Joint Metal North Brown Intact 0.4 Negative

12 Exterior Court Yard Window Frame Metal North Black Intact 0.5 Negative

13 Exterior Court Yard Window Casing Metal North Black Intact -0.3 Negative

14 Exterior Court Yard Wall CMU East Brown Intact 0.2 Negative

15 Exterior Court Yard Wall CMU East Brown Intact 0.2 Negative

16 Exterior Court Yard Wall Stucco East Brown Intact 0.3 Negative

17 Exterior Court Yard Wall Concrete East Brown Intact 0.1 Negative

18 Exterior Court Yard Wall Concrete East Beige Intact 0.3 Negative

19 Exterior Court Yard Window Frame Metal East Black Intact 0 Negative

20 Interior Dining Room Wall Concrete West Beige Intact 0.3 Negative

21 Interior Dining Room Wall Concrete West Black Intact 0.4 Negative

22 Interior Dining Room Window Frame Metal West Brown Intact 0.4 Negative

23 Interior Office Wall Drywall West Beige Intact 0 Negative

24 Interior Office Window Frame Metal West Black Intact 0 Negative

25 Interior Office I-Beam Metal West Red Intact 0.1 Negative

26 Exterior Court Yard Wall CMU West Beige Intact 0.2 Negative

27 Exterior Court Yard Door Metal West Brown Intact 0.1 Negative

28 Exterior Court Yard Door Frame Metal West Brown Intact 0.4 Negative

29 Exterior Court Yard Door Frame Metal West Brown Intact 0.3 Negative

Calibration check

Calibration check

Calibration check

Converse Project No. 22-16-180-29 1

XRF Summary table SB County - High Desert Det Ctr

Action Level: 1.0 mg/cm2

Reading

No.

Exterior/Int erior Location Component Substrate Side Color Condition

Pb Conc.

(mg/cm2) Result

Calibration check30 Exterior Court Yard Door Metal West Brown Intact 0.1 Negative

31 Exterior Court Yard Exercise Unit Metal Silver Intact 0.1 Negative

32 Exterior Court Yard Floor Metal Gray Intact 0.3 Negative

33 Exterior Court Yard Floor Metal West Red Intact 0.2 Negative

34 Interior Office Window Frame Metal East Black Intact 0 Negative

35 Interior Office Wall CMU East Beige Intact 0.2 Negative

36 Interior Office Wall Drywall East Beige Intact 0 Negative

37 Interior Office I-Beam Metal East Red Intact -0.1 Negative

38 Exterior Court Yard Wall Concrete North Beige Intact 0.3 Negative

39 Exterior Court Yard Wall Concrete North Brown Intact 0.3 Negative

40 Exterior Court Yard Door Metal North Black Intact 0 Negative

41 Exterior Court Yard Door Frame Metal North Black Intact 0.3 Negative

42 Exterior Court Yard Door Step Metal North Yellow Intact 0.1 Negative

43 Exterior Court Yard Wall CMU East Beige Intact 0.3 Negative

44 Exterior Court Yard Door Metal East Brown Intact 0 Negative

45 Exterior Court Yard Door Frame Metal East Brown Intact 0.3 Negative

46 Exterior Court Yard Door Frame Metal East Brown Intact 0.4 Negative

47 Exterior Court Yard Door Frame Metal East Brown Intact 0.4 Negative

48 Exterior Court Yard Door Metal East Brown Intact 0.1 Negative

49 Exterior Court Yard Door Metal South Black Intact 0 Negative

50 Exterior Court Yard Door Frame Metal South Black Intact 0.5 Negative

51 Exterior Court Yard Joint Metal South Beige Intact 0.2 Negative

52 Exterior Court Yard Joint Metal South Brown Intact 0.5 Negative

53 Exterior Court Yard Wall CMU West Brown Intact 0.3 Negative

54 Exterior Court Yard Wall CMU West Brown Intact 0.2 Negative

55 Exterior Court Yard Wall Stucco West Beige Intact 0 Negative

56 Exterior Court Yard Window Frame Metal West Black Intact 0 Negative

57 Exterior Court Yard Exercise Unit Metal Silver Intact 0.1 Negative

58 Exterior Court Yard Floor Concrete West Green Intact 0.3 Negative

Converse Project No. 22-16-180-29 2

XRF Summary table SB County - High Desert Det Ctr

Action Level: 1.0 mg/cm2

Reading

No.

Exterior/Int erior Location Component Substrate Side Color Condition

Pb Conc.

(mg/cm2) Result

Calibration check59 Exterior Court Yard Floor Concrete West Red Intact 0.2 Negative

60 1 Positive

61 0.9 Negative

62 1.1 Positive

Calibration check

Calibration check

Calibration check

Converse Project No. 22-16-180-29 3