10 H 06 Hazmat DC0092ZZ 2023 O M Inspection of Robert C Weaver.pdf

2023 OPERATIONS AND MAINTENANCE

INSPECTION REPORT

ROBERT C. WEAVER FEDERAL BUILDING

(DC0092ZZ)

451 7th Street, SW Washington, D.C. 20410

Prepared for

GENERAL SERVICES ADMINISTRATION

Safety, Environment, and Fire Protection Branch

National Capital Region 1800 F Street, NW., Room 4324

Washington, D.C., 20006

Submitted by

Rambin Global JV 6401 Golden Triangle Drive, Suite 304

Greenbelt, MD 20770

September 25, 2023

Contract No. 47PM0618D0014 PDN No. EP-47PM0923F0044 Order No. 47PM0923F0044

Reviewed by:

Judi Todd Darnell Dr. Channa Bambaradeniya, CIH Director of Operations Certified Industrial Hygienist

General Services Administration 2023 O&M Inspection Report Robert C. Weaver Building (DC0092ZZ) Rambin Global JV Project # GSA-2023-01 i

Executive Summary Rambin Global Joint Venture (RGJV) conducted a reinspection at the Robert C. Weaver Federal Building located at 451 7th Street, SW, Washington, D.C., 20410, between the dates of September 5 and 6, 2023. This reinspection was conducted as per the General Services Administration’s (GSA’s) scope of work and in accordance with Asbestos Hazard Emergency Response Act (AHERA) Protocols.

The survey was based on previous reinspection reports submitted to RGJV by GSA.

The following six (6) materials are confirmed as asbestos-containing materials (ACMs):

12”x12” Floor Tile (Grey with Light Grey Streaks) and Black Mastic 12”x12” Floor Tile (Black with Grey Flecks) and Black Mastic Gray Floor Tile and Black Mastic Tank Insulation, Tank T-1-10 Tank Insulation, Tank T-1-7 Underlying Floor Tile (Under HSA#2) *

*Note: HSA=Homogeneous Sampling Area

The following twenty-one (21) materials are presumed asbestos-containing materials (PACM):

12”x12” Floor Tile (Dark Grey with Light Grey Flecks) and Black Mastic 12”x12” Floor Tile (Blue with Light and Dark Blue Flecks) and Black Mastic 12”x12” Floor Tile (Tan with Beige Flecks) and Yellow/Tan Adhesives 12”x12” Floor Tile (Cream with Brown Flecks) and Black Mastic 12”x12” Floor Tile (Grey with Light & Dark Grey Flecks) and Yellow/Brown Adhesive Residual Black Mastic under Carpeting 1’x2’ Tan-Brown Stone Floor Tile 4” Brown Cove Base with Yellow-Tan Adhesive 4” Black Cove Base with Yellow-Tan Adhesive 4” Grey Cove Base with Dark Brown Mastic Drywall Panel Office Wall – Metal Frame Wall Systems Ceiling Plaster (White) in Metal Panel Frames Beige Seam Sealants on Fiberglass HVAC Duct Insulation 2”-4” OD Mudded Fittings on Fiberglass Pipe Insulation 4”-6” OD Mudded Fittings on Fiberglass Pipe Insulation 6”-8” OD Mudded Fittings on Fiberglass Pipe Insulation 8”-10” OD Mudded Fittings on Fiberglass Pipe Insulation 10”-12” OD Mudded Fittings on Fiberglass Insulation Water Supply Pipe Lines 10”-12” OD Mudded Fittings on Fiberglass Insulation Storm-Water Pipe Lines Fire Doors

Sixteen (16) materials are non-ACM per PLM Analysis. A summary of those materials is provided in the Findings section of this report.

ii

All accessible areas were surveyed to identify and assess the condition of ACBMs as part of this reinspection.

The survey information and updates, along with any other observations, are provided in the Findings and Recommendations of this report. To assist GSA with budgeting, approximate abatement costs are provided.

iii

Table of Contents

EXECUTIVE SUMMARY I

TABLE OF CONTENTS III

1.0 INTRODUCTION 1

2.0 METHODOLOGY 2

3.0 FINDINGS 4

4.0 RECOMMENDATIONS 6

APPENDIX A - ASBESTOS-CONTAINING MATERIAL INVENTORY

APPENDIX B – PRESUMED ASBESTOS-CONTAINING MATERIAL INVENTORY

APPENDIX C - NON-ASBESTOS-CONTAINING MATERIAL INVENTORY

APPENDIX D – LABORATORY ANALYTICAL RESULTS

APPENDIX E – GSA ASBESTOS ASSESSMENT FORMS

APPENDIX F – INSPECTOR(S) ACCREDITATION

APPENDIX G – 2023 INVENTORY OF ACM AND PACM, MATERIAL ASSESSMENT, AND APPROXIMATE

ABATEMENT COSTS

1.0 Introduction

In accordance with our Industrial Hygiene Services contract with the General Services Administration (GSA), Rambin Global JV (RGJV) completed the 2023 Asbestos Hazard Emergency Response Act (AHERA) Operations and Maintenance (O&M) survey of the Robert C. Weaver Building (DC0092ZZ) on September 5 and 6, 2023. The Weaver Building is located at 451 7th Street, SW, in Washington, D.C. The purpose of the survey was to assess previously identified asbestos-containing materials (ACMs), to sample and confirm the asbestos content of presumed asbestos-containing materials, and to identify and sample any additional suspect ACMs not previously identified. Sampling within the Weaver Building was limited to 30 samples per the contract’s scope of work. GSA provided RGJV with the 2016 TTL-Arc Environmental JV Reinspection Report. A list of previous abatement activities was not available.

Mr. John Fuentes (#230003039), Mr. Sameera Meegoda (#230002759), and Mr. Daniel Wooddell (#220001918), all EPA and Maryland-accredited AHERA Inspectors, with reciprocity in Washington, D.C., conducted the reinspection. The Inspectors’ certifications are provided in Appendix F.

Survey and reinspection protocols were based on those adopted by the U.S. Environmental Protection Agency (EPA) as detailed in the Asbestos Hazard Emergency Response Act (AHERA; 40 CFR 763, Subpart E), and guidelines detailed by GSA.

2.0 Methodology

RGJV conducted the asbestos survey under protocols established by USEPA 40 Code of Federal Regulations (CFR) 763 Asbestos Hazard Emergency Response Act (AHERA) and 40 CFR 61 Subpart M, National Emission Standards for Hazardous Air Pollutants (NESHAP). GSA-established protocols for asbestos bulk sampling were followed during the survey.

When possible, suspect materials, according to AHERA, that were homogeneous in nature (i.e., uniform in color and texture, installation date) were identified, touched to determine friability, and sampled by removing a small piece. Extreme care was taken to avoid potential fiber release during the inspection/sampling process. Before sample collection, a fine mist of water was typically applied to the sample site. Samples were collected using sharpened core samplers and/or razor knives, where necessary, and immediately placed in labeled containers and sealed. Any dust generated was wet-wiped to minimize the potential for fiber release. Samples were not collected from occupied rooms. The location (selected at random), condition, and quantity of each homogeneous material were recorded in the inspector’s log.

During the survey, RGJV collected a total of twenty-nine (29) bulk samples of ten (10) suspect materials. The bulk samples were submitted, along with the corresponding chain-of-custody documentation, to AmeriSci Group of Midlothian, VA, a National Voluntary Laboratory Accreditation Program (NVLAP) accredited-laboratory, to determine the presence of asbestos in the sampled materials. Quantification of asbestos content in bulk samples was performed via EPA 600/R-93/116 Method using Polarized Light Microscopy (PLM). The EPA, the Occupational Health and Safety Administration (OSHA), and the District’s Department of Energy and Environment (DOEE) define an ACM as any material containing greater than 1% asbestos.

Assessment of friable ACBM was performed in accordance with Section 763.88 of 40 CFR, Part 763, Subpart E (AHERA). Numerous factors were considered for each homogeneous ACBM in each inspected functional space so as to group each ACBM into one of the seven AHERA assessment categories. Specific factors considered in assessing ACBM conditions included:

Friability Proximity to air plenum/stream Physical condition and extent of damage: Accessibility to building occupants

- Water damage Potential for damage

- Contact damage

- Deterioration

Inaccessible areas could be addressed only through extrapolation of conditions in accessible building space and review of building plans, specifications, or other building documents provided to RGJV. Such inaccessible areas might include but are not limited to:

Within walls Within fire doors Enclosed pipe/duct chases Inside mechanical equipment/ductwork Above plaster ceilings Behind doors that cannot be opened High areas beyond reach of 12-foot ladders

Limited access areas such as those beneath fixed or wall-to-wall carpeting, or above fixed ceilings with small access hatches, etc. were investigated as feasible. Conclusions regarding the presence or absence of asbestos in these areas might be of limited accuracy.

Suspect ACBMs were classified as per § 763.88 of the AHERA Rule, into one of the following seven-hazard assessment categories:

1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged or significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

6. ACBM with potential for significant damage

7. Any remaining friable ACBM or friable suspected ACBM

3.0 Findings

Based on the laboratory analytical results, three (3) of the materials sampled during 2023 survey were confirmed to be asbestos-containing by PLM analysis. The following lists include all materials noted and/or assessed by RGJV’s Inspector.

Details of confirmed asbestos-containing materials, including photos, are provided in Appendix A. Details for presumed ACM is summarized in Appendix B. Details for non-asbestos-containing materials is summarized in Appendix C. Current and previous (when feasible) analytical results may be found in Appendix D. GSA’s Asbestos Assessment Data Forms are provided as Appendix E.

Confirmed ACM

12”x12” Floor Tile (Grey with Light Grey Streaks) and Black Mastic 12”x12” Floor Tile (Black with Grey Flecks) and Black Mastic Gray Floor Tile and Black Mastic Tank Insulation, Tank T-1-10 Tank Insulation, Tank T-1-7 Underlying Floor Tile (Under HSA#2)

PACM

12”x12” Floor Tile (Dark Grey with Light Grey Flecks) and Black Mastic 12”x12” Floor Tile (Blue with Light and Dark Blue Flecks) and Black Mastic 12”x12” Floor Tile (Tan with Beige Flecks) and Yellow/Tan Adhesives 12”x12” Floor Tile (Cream with Brown Flecks) and Black Mastic 12”x12” Floor Tile (Grey with Light & Dark Grey Flecks) and Yellow/Brown Adhesive Residual Black Mastic under Carpeting 1’x2’ Tan-Brown Stone Floor Tile 4” Brown Cove Base with Yellow-Tan Adhesive 4” Black Cove Base with Yellow-Tan Adhesive 4” Grey Cove Base with Dark Brown Mastic Drywall Panel Office Wall – Metal Frame Wall Systems Ceiling Plaster (White) in Metal Panel Frames Beige Seam Sealants on Fiberglass HVAC Duct Insulation 2”-4” OD Mudded Fittings on Fiberglass Pipe Insulation 4”-6” OD Mudded Fittings on Fiberglass Pipe Insulation 6”-8” OD Mudded Fittings on Fiberglass Pipe Insulation 8”-10” OD Mudded Fittings on Fiberglass Pipe Insulation 10”-12” OD Mudded Fittings on Fiberglass Insulation Water Supply Pipe Lines 10”-12” OD Mudded Fittings on Fiberglass Insulation Storm-Water Pipe Lines Fire Doors

Confirmed Non-ACM

4” Black Cove Base with Brown Mastic 6” Gray Cove Base with Brown Mastic Wall Plaster with Skim Coat (Inner Corridor Walls on Pyrobar Block) Wall Plaster with Skim Coat (Outer Office Walls on Wire Mesh) Ceiling Plaster on Drywall 2’x4’ Drop Ceiling Panel (Track and Pinhole Pattern) 2’x4’ Rigid Drop Ceiling Panel Off-White Seam Sealant on Fiberglass HVAC Duct Insulation Off-White Seam Sealant on 2”-4” O.D. Fiberglass Pipe Insulation 9”x9” Floor Tile (Gray with Cream Flecks) Black Mastic Associated with 9”x9” Floor Tile (Gray with Cream Flecks) Tank Insulation (Gray Mud Over Fiberglass) (Tank T-1-11) Tank Insulation (Gray Mud Over Fiberglass) (Tank T-1-28) Underlying Floor Tile (3rd Floor Café) Mastic Associated with Underlying Floor Tile (3rd Floor Café) Mastic Associated with Underlying Floor Tile (Room SB-11) *

* Mastic is associated with Asbestos-Containing Underlying Floor Tile (GSA-HUD-38)

4.0 Recommendations

Any planned renovations or maintenance activities that will disturb known and suspect ACBM (and potentially render them friable) will require the proper response action of abatement, encapsulation, enclosure, and/or repair by AHERA and DOEE-accredited and trained personnel. All ACBM and PACM must be maintained in place, unless removed, in accordance with the O&M plan. All assumed ACBM(s) must be sampled prior to any disturbance to verify the presence of asbestos by an AHERA and DOEE-accredited Inspector and analyzed by a NIST/NVLAP accredited laboratory.

Specific material condition and response actions are provided in the table presented in Appendix G.

APPENDIX A – ASBESTOS-CONTAINING MATERIAL INVENTORY

Asbestos-Containing Materials Inventory – Robert C. Weaver Building

HSA

Material

Description Location

Estimated Quantity

Sample Number

Results Photograph

GSA-

HUD-01

12”x12” Floor Tile (Gray with Light Gray Streaks) and

Black Mastic

Throughout Building in Main Corridors, Under

Carpeting

610,830 SF

HUD-01A,

01B, 01C

Floor Tile: 2% Chrysotile Mastic: 5% Chrysotile

GSA-

HUD-02

12”x12” Floor Tile (Black with Gray Flecks) and Black

Mastic

Freight Elevator Lobbies, Suite

1100, Layer 2 in 3rd Floor Café, Basement Custodial Break

Room

5,515 SF

HUD-02A,

02B, 02C

Mastic: 5%

HUD-02.1

Gray Floor Tile with Black Mastic

Second Layer of tile in Suite 1100

1,200 SF

HUD-02C-C,

02C-D

Floor Tile: 2% Chrysotile Mastic: 5%

Not Available

Asbestos-Containing Materials Inventory – Robert C. Weaver Building

Material

Description Location

Estimated Quantity

Sample Number

Results Photograph

GSA-

HUD-33

Tank Insulation (Gray Mud over

Fiberglass)

Room B-248, Tank T-1-10

230 SF

GSA-HUD-

33A, 33B, 33C 2% Chrysotile

HUD-35

Tank Insulation (Gray Mud over

Fiberglass)

Room B-248, Tank T-1-7

370 SF

GSA-HUD-

35A, 35B, 35C

HUD-38

Underlying Floor Tile (Under

HSA#2)

Room SB-11 520 SF

GSA-HUD-

38A, 38B, 38C

Key: HSA= Homogeneous Sampling Area

APPENDIX B – PRESUMED ASBESTOS-CONTAINING MATERIAL

INVENTORY

Presumed Asbestos-Containing Materials Inventory – Robert C. Weaver Building

Material

Description Location Quantity Photograph

GSA-

HUD- 13

12”x12” Floor Tile (Dark Grey with Light Grey

Flecks) and Black Mastic

Replacement flooring throughout Main

Corridors of building and in Basement 200

Corridor

2,300 SF

HUD- 14

12”x12” Floor Tile (Blue with Light and Dark

Blue Flecks) and Black Mastic

Room 5133 (Copy Room)

600 SF

HUD- 15

12”x12” Floor Tile (Tan with Beige Flecks) and Yellow/Tan Adhesives

3rd Floor Café with Dining and Restaurant

Areas

1,375 SF

HUD- 16

12”x12” Floor Tile (Cream with Brown Flecks) and Black Mastic

Room B-155 (Vending/Snack

Room)

288 SF

Material

Description Location Quantity Photograph

GSA-

HUD- 17

12”x12” Floor Tile (Grey with Light & Dark

Grey Flecks) and Yellow/Brown

Adhesive

Conference Room 10239 rear AV Room

185 SF

HUD- 18

Residual Black Mastic under

Carpeting

Basement Room B-

600 SF

HUD- 19

1’x2’ Tan-Brown Stone Floor Tile

1st Floor Main Lobby and Corridors, Main 1st Floor Cafeteria central walkway

5,415 SF No Photo Available

GSA-

HUD- 20

4” Brown Cove Base w/Yellow- Tan Adhesive

Throughout Building – Occupied Office Areas

5,200 LF No Photo Available

GSA-

HUD- 21

4” Black Cove Base w/Yellow- Tan Adhesive

Throughout Building – Occupied Office Areas

12,885 LF

HUD- 22

4” Grey Cove Base w/Dark Brown Mastic

Freight Elevator Lobbies, occupied offices, and inner hallways

3,800 LF No Photo Available

GSA-

HUD- 23

Drywall Panel Office Wall – Metal Frame Wall Systems

Throughout Building – Occupied Office Areas

81,525 SF No Photo Available

GSA-

HUD- 24

Ceiling Plaster (White) in Metal

Panel Frames

Stairwell Ceilings:

NW Stairwell 3 Exit on 1st Floor at Security Desk and SE

Stairwell 1 Exit at Security Desk

480 SF

Material

Description Location Quantity Photograph

GSA-

HUD- 25

Beige Seam Sealants on

Fiberglass HVAC Duct Insulation

Penthouse AHU MEC Room ducts and fan units, Sub- Basement Level fan units and associated ductwork

6,800 LF

HUD- 26

2”-4” OD

Mudded Fittings on Fiberglass Pipe Insulation

10th Floor (above ceilings on HVAC wall unit piping);

Stairwells, Penthouse MEC Rooms, Basement & Sub- Basement MEC

Rooms, Restroom piping chases

503 EA

HUD- 27

4”-6” OD

Mudded Fittings on Fiberglass Pipe Insulation

Overhead pipe runs in Penthouse MEC and Sub-Basement MEC Rooms and piping chases to upper floors

72 EA

HUD- 28

6”-8” OD

Mudded Fittings on Fiberglass Pipe Insulation

Overhead pipe runs in Penthouse MEC and Sub-Basement MEC Rooms and piping chases to upper floors

65 EA

Material

Description Location Quantity Photograph

GSA-

HUD- 29

8”-10” OD

Mudded Fittings on Fiberglass Pipe Insulation

25 Fittings in Penthouse Chiller

Plant 18 Fittings in Sub- Basement overhead pipe runs for HVAC and Water Supply

43 EA

HUD- 30

10”-12” OD

Mudded Fittings on Fiberglass Insulation Water

Supply Pipe Lines

Water Supply Line TSI – overhead piping in Basement and Sub-

Basement

12 EA

HUD- 31

10”-12” OD

Mudded Fittings on Fiberglass Insulation Storm- Water Pipe Lines

Storm-Water Drainage

– Vertical Runs in

Stairwells 5/6/7/8 and above ceilings in

22 EA

HUD- 32

Fire Doors

Throughout Building – At Stairwell Exits, Service Exits and Mechanical and

Electrical Room Areas

169 EA

Key: HSA = Homogeneous Sampling Area

APPENDIX C – NON- ASBESTOS-CONTAINING MATERIAL INVENTORY

Non-Asbestos-Containing Materials Inventory – Robert C. Weaver Building HSA Material Description Location Sample Number Results Photograph

GSA-HUD-03

4” Black Cove Base w/Brown Mastic

Freight Elevator Lobbies, Occupied

Office Areas

HUD-03A, 03B,

03C

No Asbestos Detected

No Photo Available

GSA-HUD-04

6” Gray Cove Base w/Brown Mastic Main Corridors throughout building

HUD-04A, 04B,

04C No Asbestos

Detected No Photo Available

GSA-HUD-05

Wall Plaster w/ Skim Coat

(Inner Corridor Walls on Pyrobar Block)

Main Corridors throughout building

HUD-05A, 05B,

05C

No Asbestos Detected

No Photo Available

GSA-HUD-06

Wall Plaster w/ Skim Coat

(Outer Office Walls on Wire Mesh)

Throughout Building – Office Areas

HUD-06A, 06B,

06C

No Asbestos Detected

No Photo Available

GSA-HUD-07

Ceiling Plaster on

Drywall

Main Elevator Lobby Areas

2nd to 10th Floors

HUD-07A, 07B,

07C

No Asbestos Detected

No Photo Available

GSA-HUD-08

2’x4’ Drop Ceiling

Panel (Track w/Pinhole)

Main Corridors throughout building and basement areas

HUD-08A, 08B,

08C, 08D, 08E

No Asbestos Detected

No Photo Available

GSA-HUD-09

2’x4’ Rigid Drop

Ceiling Panel Throughout Building –

Office Areas

HUD-09A, 09B,

09C No Asbestos

Detected No Photo Available

GSA-HUD-10

Off-White Seam Sealant on Fiberglass

HVAC Duct Insulation

Throughout Building - Above ceilings and HVAC mechanical equipment

HUD-10A, 10B,

10C

No Asbestos Detected

No Photo Available

GSA-HUD-11

Off-White Seam Sealant on 2”-4”

O.D.

Fiberglass Pipe

Insulation

Throughout Building - Above ceilings in overhead piping

HUD-11A, 11B,

11C

No Asbestos

GSA-HUD-12

9”x9” Floor Tile (Gray w/ Cream

Flecks) Room B-182

GSA-HUD-12A-

FT, 12B-FT,

12C-FT

No Asbestos

Black Mastic Associated with

HSA#12

Room B-182

GSA-HUD-12A-

M, 12B-M, 12C-

M

No Asbestos Detected

GSA-HUD-34

Tank Insulation (Gray Mud Over Fiberglass)

Room B-248, Tank T-1-11

GSA-HUD-34A,

34B, 34C

GSA-HUD-36

Tank Insulation (Gray Mud Over Fiberglass)

North Penthouse Mechanical Room, Tank

T-1-28

GSA-HUD-36A,

36B

GSA-HUD-37

Underlying Floor Tile (Under HSA#15)

3rd Floor Café

GSA-HUD-37A-

FT, 37B-FT,

37C-FT

Mastic Associated with Underlying Floor Tile

(Under HSA#15) 3rd Floor Café

GSA-HUD-37A-

M, 37B-M, 37C-

M

No Asbestos Detected

GSA-HUD-38

*Mastic Associated with Underlying Floor Tile (Under HSA#2)

Room SB-11

GSA-HUD-38A-

M, 38B-M, 38C-

M

No Asbestos

HSA: Homogeneous Sampling Area

*Mastic is associated with Asbestos-Containing Underlying Floor Tile (GSA-HUD-38)

APPENDIX D – LABORATORY ANALYTICAL RESULTS

September 18, 2023

Dear Judi Darnell:

Global Consulting, Inc.

Attn: Judi Darnell 6401 Golden Triangle Drive, #304 Greenbelt, MD 20770

RE: Global Consulting, Inc.

Job Number 123091258

P.O. #GSA-2023-01

GSA-2023-01; GSA Weaver Bldg 2023; 451 7th St SW; Washington DC

AmeriSci Richmond

13635 GENITO ROAD

MIDLOTHIAN, VIRGINIA 23112

TEL: 8047631200 FAX: 8047631800

Enclosed are the results for PLM asbestos analysis of the following Global Consulting, Inc. samples received at AmeriSci on Monday, September 11, 2023, for a 5 day turnaround:

GSA-HUD-12A-FT, GSA-HUD-12B-FT, GSA-HUD-12C-FT, GSA-HUD-12A-M, GSA-HUD-12B-M, GSA-HUD-12C-M, GSA-HUD-33A, GSA-HUD-33B, GSA-HUD-33C, GSA-HUD-34A, GSA-HUD-34B, GSA-HUD-34C, GSA-HUD-35A, GSA-HUD-35B, GSA-HUD-35C, GSA-HUD-36A, GSA-HUD-36B, GSA-HUD-37A-FT, GSA-HUD-37B-FT, GSA-HUD-37C-FT, GSA-HUD-37A-M, GSA-HUD-37B-M, GSA-HUD-37C-M, GSA-HUD-38A-FT, GSA-HUD-38B-FT, GSA-HUD-38C-FT, GSA-HUD-38A-M, GSA-HUD-38B-M, GSA-HUD-38C- M

The 29 samples contained in zip lock bag were shipped to AmeriSci via Fed Ex 8123 4318 3760 B 840. These samples were prepared and analyzed according to EPA PLM Method (EPA 600/R-93/116 Section 2.2). The required analytical information, analysis results, analyst signature and laboratory identification are contained in the PLM Bulk Asbestos Report. If TEM analysis was requested for selected samples the gravimetric reduction data (by Sec 2.3) and TEM Asbestos % (by Sec 2.5) are included in Table 1 along with a summary of Asbestos % by PLM for all samples analyzed.

This report relates ONLY to the sample analysis expressed as % asbestos. AmeriSci assumes no responsibility for customer supplied data such as “sample type”, "location", or “area sampled”. This report must not be used to claim product endorsement by AmeriSci, NVLAP or any agency of the U. S. Government. The National Institute of Standards and Technology accreditation requirements mandate that this report must not be reproduced, except in full, without the written approval of the laboratory.

This report may contain specific data not covered by NVLAP or ELAP accreditations, if so identified in relevant footnotes.

Glenn F. Massey

Sincerely, QA Manager | Authorized Signatory

AmeriSci appreciates this opportunity to serve your organization. Please contact us for any further assistance or with any questions.

Boston - Los Angeles - New York - Richmond

AmeriSci Richmond

13635 GENITO ROAD

MIDLOTHIAN, VIRGINIA 23112

TEL: (804) 763-1200 • FAX: (804) 763-1800

09/11/23 AmeriSci Job # 123091258 09/15/23

1 8 GSA-2023-01; GSA Weaver Bldg 2023; 451 7th St SW;

Washington DC

PLM Bulk Asbestos Report Date Received Date Examined

RE:

ofPage

P.O. # Global Consulting, Inc.

6401 Golden Triangle Drive, #304

Greenbelt, MD 20770

Attn: Judi Darnell

Asbestos Present Total % AsbestosClient No. / HGA Lab No.

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12A-FT 123091258-01L1 NAD

9"X9" FLOOR TILE (GRAY W/CREAM FLECKS); ROOM B-18212

Green, Heterogeneous, Non-Fibrous, Carpet Mastic

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12A-FT 123091258-01L2 NAD

9"X9" FLOOR TILE (GRAY W/CREAM FLECKS); ROOM B-18212

Gray, Heterogeneous, Non-Fibrous, Floor Tile

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12B-FT 123091258-02L1 NAD

9"X9" FLOOR TILE (GRAY W/CREAM FLECKS); ROOM B-18212

Green, Heterogeneous, Non-Fibrous, Carpet Mastic

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12B-FT 123091258-02L2 NAD

9"X9" FLOOR TILE (GRAY W/CREAM FLECKS); ROOM B-18212

Gray, Heterogeneous, Non-Fibrous, Floor Tile

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12C-FT 123091258-03L1 NAD

9"X9" FLOOR TILE (GRAY W/CREAM FLECKS); ROOM B-18212

Green, Heterogeneous, Non-Fibrous, Carpet Mastic

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

See Reporting notes on last page

AmeriSci Job #: 123091258 Page 2 of 8

GSA-2023-01; GSA Weaver Bldg 2023; 451 7th St SW;

Washington DC

PLM Bulk Asbestos Report Client Name: Global Consulting, Inc.

Asbestos Present Total % AsbestosClient No. / HGA Lab No.

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12C-FT 123091258-03L2 NAD

9"X9" FLOOR TILE (GRAY W/CREAM FLECKS); ROOM B-18212

Gray, Heterogeneous, Non-Fibrous, Floor Tile

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12A-M 123091258-04 NAD

BLACK MASTIC ASSOCIATED WITH HSA#12; ROOM B-18212

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12B-M 123091258-05 NAD

BLACK MASTIC ASSOCIATED WITH HSA#12; ROOM B-18212

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-12C-M 123091258-06 NAD

BLACK MASTIC ASSOCIATED WITH HSA#12; ROOM B-18212

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

YesGSA-HUD-33A 123091258-07 2.0%

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-10,END OF TANK

Gray, Heterogeneous, Non-Fibrous, Bulk Material Chrysotile 2.0% Fibrous glass 30%, Non-fibrous 68%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

GSA-HUD-33B 123091258-08 NA/PS

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-10,END OF TANK

Bulk Material

AmeriSci Job #: 123091258 Page 3 of 8

Washington DC

PLM Bulk Asbestos Report Client Name: Global Consulting, Inc.

Asbestos Present Total % AsbestosClient No. / HGA Lab No.

Location:

Analyst Description:

Asbestos Types:

Other Material:

GSA-HUD-33C 123091258-09 NA/PS

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,TANK

T-1-10, MIDDLE OF TANK

Bulk Material

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-34A 123091258-10L1 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,TANK

T-1-11,END OF TANK

Orange, Heterogeneous, Non-Fibrous, Wrap

Cellulose 65%, Non-fibrous 35%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-34A 123091258-10L2 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,TANK

T-1-11,END OF TANK

Gray, Heterogeneous, Non-Fibrous, Mud

Fibrous glass 30%, Non-fibrous 70%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-34B 123091258-11L1 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-11,MIDDLE OF TANK

Orange, Heterogeneous, Non-Fibrous, Wrap

Cellulose 65%, Non-fibrous 35%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-34B 123091258-11L2 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-11,MIDDLE OF TANK

Gray, Heterogeneous, Non-Fibrous, Mud

Fibrous glass 30%, Non-fibrous 70%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-34C 123091258-12L1 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-11,END OF TANK

Orange, Heterogeneous, Non-Fibrous, Wrap

Cellulose 65%, Fibrous glass 35%

(by CVES) by Gordon T. Saleeby

AmeriSci Job #: 123091258 Page 4 of 8

Washington DC

PLM Bulk Asbestos Report Client Name: Global Consulting, Inc.

Asbestos Present Total % AsbestosClient No. / HGA Lab No.

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-34C 123091258-12L2 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-11,END OF TANK

Gray, Heterogeneous, Non-Fibrous, Mud

Fibrous glass 30%, Non-fibrous 70%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-35A 123091258-13L1 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T- 1-7, END OF TANK

Blue, Homogeneous, Fibrous, Wrap

Cellulose 65%, Non-fibrous 35%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

YesGSA-HUD-35A 123091258-13L2 2.0%

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T- 1-7, END OF TANK

Gray, Heterogeneous, Non-Fibrous, Mud Chrysotile 2.0% Fibrous glass 30%, Non-fibrous 68%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-35B 123091258-14L1 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-7, END OF TANK

Blue, Heterogeneous, Non-Fibrous, Wrap

Cellulose 65%, Non-fibrous 35%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

GSA-HUD-35B 123091258-14L2 NA/PS

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-7, END OF TANK

Mud

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-35C 123091258-15L1 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-7, MIDDLE OF TANK

Blue, Heterogeneous, Non-Fibrous, Wrap

Cellulose 65%, Non-fibrous 35%

(by CVES) by Gordon T. Saleeby

AmeriSci Job #: 123091258 Page 5 of 8

Washington DC

PLM Bulk Asbestos Report Client Name: Global Consulting, Inc.

Asbestos Present Total % AsbestosClient No. / HGA Lab No.

Location:

Analyst Description:

Asbestos Types:

Other Material:

GSA-HUD-35C 123091258-15L2 NA/PS

TANK INSULATION (GRAY MUD OVER FIBERGLASS); ROOM B-248,

TANK T-1-7, MIDDLE OF TANK

Mud

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-36A 123091258-16L1 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); NORTH

PENTHOUSE MECHANICAL ROOM, TANK T-1-28, END OF TANK

Orange, Heterogeneous, Non-Fibrous, Wrap

Cellulose 65%, Non-fibrous 35%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-36A 123091258-16L2 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); NORTH

PENTHOUSE MECHANICAL ROOM, TANK T-1-28, END OF TANK

Gray, Homogeneous, Fibrous, Mud

Fibrous glass 30%, Non-fibrous 70%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-36B 123091258-17L1 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); NORTH

PENTHOUSE MECHANICAL ROOM, TANK T-1-28, END OF TANK

Blue, Heterogeneous, Non-Fibrous, Wrap

Cellulose 65%, Non-fibrous 35%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-36B 123091258-17L2 NAD

TANK INSULATION (GRAY MUD OVER FIBERGLASS); NORTH

PENTHOUSE MECHANICAL ROOM, TANK T-1-28, END OF TANK

Gray, Heterogeneous, Non-Fibrous, Mud

Fibrous glass 30%, Non-fibrous 70%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-37A-FT 123091258-18 NAD

UNDERLYING FLOOR TILE (UNDER HSA#15); 3RD FLOOR CAFE37

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby

AmeriSci Job #: 123091258 Page 6 of 8

Washington DC

PLM Bulk Asbestos Report Client Name: Global Consulting, Inc.

Asbestos Present Total % AsbestosClient No. / HGA Lab No.

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-37B-FT 123091258-19 NAD

UNDERLYING FLOOR TILE (UNDER HSA#15); 3RD FLOOR CAFE37

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-37C-FT 123091258-20 NAD

UNDERLYING FLOOR TILE (UNDER HSA#15); 3RD FLOOR CAFE37

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-37A-M 123091258-21 NAD

MASTIC ASSOCIATED WITH UNDERLYING FLOOR TILE (UNDER

HSA#15); 3RD FLOOR CAFE

Clear, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-37B-M 123091258-22 NAD

MASTIC ASSOCIATED WITH UNDERLYING FLOOR TILE (UNDER

HSA#15); 3RD FLOOR CAFE

Dark, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-37C-M 123091258-23 NAD

MASTIC ASSOCIATED WITH UNDERLYING FLOOR TILE (UNDER

HSA#15); 3RD FLOOR CAFE

Clear, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

YesGSA-HUD-38A-FT 123091258-24 2.0%

UNDERLYING FLOOR TILE (UNDER HSA#2); ROOM SB-1138

Drk. Gray, Heterogeneous, Non-Fibrous, Bulk Material Chrysotile 2.0% Non-fibrous 98%

(by CVES) by Gordon T. Saleeby

AmeriSci Job #: 123091258 Page 7 of 8

Washington DC

PLM Bulk Asbestos Report Client Name: Global Consulting, Inc.

Asbestos Present Total % AsbestosClient No. / HGA Lab No.

Location:

Analyst Description:

Asbestos Types:

Other Material:

GSA-HUD-38B-FT 123091258-25 NA/PS

UNDERLYING FLOOR TILE (UNDER HSA#2); ROOM SB-1138

Bulk Material

Location:

Analyst Description:

Asbestos Types:

Other Material:

GSA-HUD-38C-FT 123091258-26 NA/PS

UNDERLYING FLOOR TILE (UNDER HSA#2); ROOM SB-1138

Bulk Material

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-38A-M 123091258-27 NAD

MASTIC ASSOCIATED WITH UNDERLYING FLOOR TILE (UNDER HSA#2);

ROOM SB-11

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-38B-M 123091258-28 NAD

MASTIC ASSOCIATED WITH UNDERLYING FLOOR TILE (UNDER HSA#2);

ROOM SB-11

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby on 09/15/23

Location:

Analyst Description:

Asbestos Types:

Other Material:

NoGSA-HUD-38C-M 123091258-29 NAD

MASTIC ASSOCIATED WITH UNDERLYING FLOOR TILE (UNDER HSA#2);

ROOM SB-11

Black, Heterogeneous, Non-Fibrous, Bulk Material

Non-fibrous 100%

(by CVES) by Gordon T. Saleeby

AmeriSci Job #: 123091258 Page 8 of 8

Washington DC

PLM Bulk Asbestos Report Client Name: Global Consulting, Inc.

Reporting Notes:

*NAD = no asbestos detected, Detection Limit <1%, Reporting Limits: CVES = 1%, 400 Pt Ct = 0.25%, 1000 Pt Ct = 0.1%; "Present" or NVA = "No Visible Asbestos" are observations made during a qualitative analysis; NA = not analyzed; NA/PS = not analyzed / positive stop; PLM Bulk Asbestos Analysis using Olympus, Model BH-2 microscope, Serial #237649, by EPA 600/R-93/116 per 40 CFR 763 (NVLAP Lab Code 101904-0) and ELAP PLM Analysis Protocol 198.1 for New York friable samples which includes quantitation of any vermiculite observed (198.6 for NOB samples) or EPA 400 pt ct by EPA 600/M4-82-020 (NYSDOH ELAP Lab # 10984); CA ELAP Lab # 2508; Note: PLM is not consistently reliable in detecting asbestos in floor coverings and similar NOB materials. NAD or Trace results by PLM are inconclusive, TEM is currently the only method that can be used to determine if this material can be considered or treated as non-asbestos-containing in New York State (also see EPA Advisory for floor tile, FR 59, 146, 38970, 8/1/94). NIST Accreditation requirements mandate that this report must not be reproduced except in full without the approval of the laboratory. This PLM report relates ONLY to the items tested.

Analyzed by: Gordon T. Saleeby Date: 9/15/2023

Reviewed by: Gordon T. Saleeby

LAB #173190

Lab Sample ID Lab Notes mastic 11612552PLM_1 tile1612552PLM_36 mastic 21612552PLM_37 mastic 11612552PLM_2 tile1612552PLM_38 mastic 21612552PLM_39

1612552PLM_3

tile1612552PLM_41 mastic 21612552PLM_42 tile1612552PLM_4 mastic1612552PLM_43 tile1612552PLM_5 mastic1612552PLM_44 tile 11612552PLM_6 mastic 11612552PLM_45 tile 21612552PLM_46 mastic 21612552PLM_47 cove base1612552PLM_7 mastic1612552PLM_48 cove base1612552PLM_8 mastic 11612552PLM_49 mastic 21612552PLM_50 cove base1612552PLM_9 mastic 11612552PLM_51 mastic 21612552PLM_52 cove base1612552PLM_10 mastic1612552PLM_53 cove base1612552PLM_11 mastic 11612552PLM_54 mastic 21612552PLM_55 cove base1612552PLM_12 mastic 11612552PLM_56 mastic 21612552PLM_57 skim1612552PLM_13 plaster1612552PLM_58 skim1612552PLM_14 plaster1612552PLM_59 skim1612552PLM_15 plaster1612552PLM_60 skim1612552PLM_16 plaster1612552PLM_61 skim1612552PLM_17 plaster1612552PLM_62 skim1612552PLM_18 plaster1612552PLM_63 drywall1612552PLM_19 skim1612552PLM_64 drywall1612552PLM_20 skim1612552PLM_65 drywall1612552PLM_21 skim1612552PLM_66

1612552PLM_22

1612552PLM_23

1612552PLM_24

1612552PLM_25

1612552PLM_26

1612552PLM_27

1612552PLM_28

1612552PLM_29

1612552PLM_30

1612552PLM_31

1612552PLM_32

1612552PLM_33

1612552PLM_34

1612552PLM_35

APPENDIX E – GSA ASBESTOS ASSESSMENT FORMS

Asbestos Assessment Data Form

Bldg. Name: Robert C. Weaver Building Assessment Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

610,830 SF

Asbestos Inspector: John Fuentes, Sameera Meegoda, Daniel Wooddell

Homogeneous Sampling Area #: GSA-HUD- 01

(Assign HSA Number)

HSA Description: 12”x12” Floor Tile (Gray with Light Gray Streaks) and Black Mastic

Location(s) of HSA in Bldg.: Throughout building in Main Corridors and under carpeting in Occupied Office Areas

(Include Functional Space)

HSA Category Damage Accessibility

Surfacing Material Significant High

Thermal Systems Insulation Minor Medium

X Miscellaneous Material X None X Low

Air Plenum: Yes X No

Friability Traffic Vibration Potential for Air Erosion

Yes High High High

X No Medium Medium Medium

X Low X Low X Low

Comments: ACM identified on prior survey. Floor Tile 2% Chrysotile, Mastic 5% Chrysotile

AHERA

Classification:

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

Sample Number Sample Location Result

HUD-01A Room 10250 Floor Tile: 2% Chrysotile

Mastic: 5% Chrysotile HUD-01B Room 10258 Floor Tile: 2% Chrysotile

Mastic: 5% Chrysotile HUD-01C Room 9154 Floor Tile: 2% Chrysotile

Mastic: 5% Chrysotile

(Include percent and type of asbestos in result, e.g. 50% Chrysotile)

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

5,515 SF

Homogeneous Sampling Area #: GSA-HUD- 02

HSA Description: 12”x12” Floor Tile (Black with Gray Flecks) and Black Mastic

Location(s) of HSA in Bldg.: Freight Elevator Lobbies, Suite 1100, Layer 2 in 3rd Floor Café, Basement Level Custodial Break Room

Thermal Systems Insulation X Minor Medium

X Miscellaneous Material None X Low

Comments: ACM identified on prior survey. Floor Tile 2% Chrysotile, Mastic 5% Chrysotile.

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

HUD-02A 10th Floor North Freight Elevator Lobby Mastic: 5% Chrysotile HUD-02B Room 9231 / South Freight Elevator Lobby Mastic: 5% Chrysotile HUD-02C Room 1100 Mastic: 5% Chrysotile

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

1,200 SF

Homogeneous Sampling Area #: GSA-HUD- 02.1

HSA Description: Gray Floor Tile and Black Mastic

Location(s) of HSA in Bldg.: Second Layer of tile in Suite 1100

Comments: ACM identified on prior survey. Floor Tile 2% Chrysotile, Mastic 5% Chrysotile

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

HUD-02C Room 1100 Floor Tile: 2% Chrysotile

Mastic: 5% Chrysotile

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

230 SF

Homogeneous Sampling Area #: GSA-HUD- 33

HSA Description: Tank Insulation, Tank T-1-10

Location(s) of HSA in Bldg.: Room B-248

Surfacing Material Significant X High

X Thermal Systems Insulation X Minor Medium

Miscellaneous Material None Low

X Yes High High High

No Medium Medium Medium

Comments:

1 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

GSA-HUD-33A Room B-248, Tank T-1-10 2% Chrysotile GSA-HUD-33B Room B-248, Tank T-1-10 Not Analyzed - Positive Stop GSA-HUD-33C Room B-248, Tank T-1-10 Not Analyzed – Positive Stop

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

370 SF

Homogeneous Sampling Area #: GSA-HUD-35

HSA Description: Tank Insulation, Tank T-1-7

Location(s) of HSA in Bldg.: Room B-248

Surfacing Material Significant X High

X Thermal Systems Insulation Minor Medium

Miscellaneous Material X None Low

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

GSA-HUD-35A Room B-248, Tank T-1-7 2% Chrysotile

GSA-HUD-35B Room B-248, Tank T-1-7 Not Analyzed – Positive Stop

GSA-HUD-35C Room B-248, Tank T-1-7 Not Analyzed – Positive Stop

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

520 SF

Homogeneous Sampling Area #: GSA-HUD-38

HSA Description: Underlying Floor Tile (Under HSA#2)

Location(s) of HSA in Bldg.: Room SB-11

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

GSA-HUD-38A-FT Room SB-11 2% Chrysotile GSA-HUD-38B-FT Room SB-11 Not Analyzed – Positive Stop GSA-HUD-38C-FT Room SB-11 Not Analyzed – Positive Stop

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

2,300 SF

Homogeneous Sampling Area #: GSA-HUD- 13

HSA Description: 12”x12” Floor Tile (Dark Grey with Light Grey Flecks) and Black Mastic

Location(s) of HSA in Bldg.: Replacement flooring throughout Main Corridors of building and in Basement 200 Corridor

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

600 SF

Homogeneous Sampling Area #: GSA-HUD- 14

HSA Description: 12”x12” Floor Tile (Blue with Light and Dark Blue Flecks) and Black Mastic

Location(s) of HSA in Bldg.: Room 5133 (Copy Room)

Comments: Material is presumed to be asbestos-containing

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

1,375 SF

Homogeneous Sampling Area #: GSA-HUD- 15

HSA Description: 12”x12” Floor Tile (Tan with Beige Flecks) and Yellow/Tan Adhesives

Location(s) of HSA in Bldg.: 3rd Floor Café with Dining and Restaurant Areas

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

288 SF

Homogeneous Sampling Area #: GSA-HUD- 16

HSA Description: 12”x12” Floor Tile (Cream with Brown Flecks) and Black Mastic

Location(s) of HSA in Bldg.: Room B-155 (Vending/Snack Room)

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

185 SF

Homogeneous Sampling Area #: GSA-HUD- 17

HSA Description: 12”x12” Floor Tile (Grey with Light & Dark Grey Flecks) and Yellow/Brown Adhesive

Location(s) of HSA in Bldg.: Conference Room 10239 rear AV Room

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

600 SF

Homogeneous Sampling Area #: GSA-HUD- 18

HSA Description: Residual Black Mastic under Carpeting

Location(s) of HSA in Bldg.: Basement Room B- 160

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

5,415 SF

Homogeneous Sampling Area #: GSA-HUD- 19

HSA Description: 1’x2’ Tan-Brown Stone Floor Tile

Location(s) of HSA in Bldg.: 1st Floor Main Lobby and Corridors, Main 1st Floor Cafeteria central walkway

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

5,200 SF

Homogeneous Sampling Area #: GSA-HUD- 20

HSA Description: 4” Brown Cove Base w/Yellow-Tan Adhesive

Location(s) of HSA in Bldg.: Throughout Building – Occupied Office Areas

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

12,885 LF

Homogeneous Sampling Area #: GSA-HUD-21

HSA Description: 4” Black Cove Base w/Yellow-Tan Adhesive

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

3,800 LF

Homogeneous Sampling Area #: GSA-HUD- 22

HSA Description: 4” Grey Cove Base w/Dark Brown Mastic

Location(s) of HSA in Bldg.: Freight Elevator Lobbies, occupied offices and inner hallways

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

81,525

Homogeneous Sampling Area #: GSA-HUD- 23

HSA Description: Drywall Panel Office Wall – Metal Frame Wall Systems

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

480 SF

Homogeneous Sampling Area #: GSA-HUD- 24

HSA Description: Ceiling Plaster (White) in Metal Panel Frames

Location(s) of HSA in Bldg.: Stairwell Ceilings: NW Stairwell 3 Exit on 1st Floor at Security Desk and SE Stairwell 1 Exit at Security Desk

X Surfacing Material Significant High

Miscellaneous Material X None X Low

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form per homogeneous sampling area. Consult 40 CFR Part 763 for sampling and analytical protocols and definitions.

Date:

9/6/2023

Address: 451 7th St. SW, Washington, DC

GSA Bldg. No: DC0092ZZ Amounts

(SF/LF/CF):

6,800 LF

Homogeneous Sampling Area #: GSA-HUD- 25

HSA Description: Beige Seam Sealants on Fiberglass HVAC Duct Insulation

Location(s) of HSA in Bldg.: Penthouse AHU MEC Room ducts and fan units, Sub- Basement Level fan units and associated ductwork

5 1. Damaged or significantly damaged TSI ACBM

2. Damaged friable surfacing ACBM

3. Significantly damaged friable surfacing ACBM

4. Damaged and significantly damaged friable miscellaneous ACBM

5. ACBM with potential for damage

NOTE: Use one form…