Attachment_1_HazMat_Report_Henshaw.pdf

THE VERTEX COMPANIES, LLC

6990 COLUMBIA GATEWAY DRIVE, SUITE 325

COLUMBIA, MARYLAND 21046 443.539.7757 | VERTEXENG.COM

December 2, 2022

Mr. Charles Wick Eastern Ecological Science Center 12100 Beech Forest Road Laurel, MD 20708

Re: Hazardous Building Materials Survey Patuxent Wildlife Refuge 12100 Beech Forest Road Laurel, MD 20708 VERTEX Project No.: 82475

Dear Mr. Wick:

The Vertex Companies, LLC (VERTEX) of Columbia, Maryland, was retained by Eastern Ecological Science Center (“Client”) to perform a limited hazardous materials survey which included an inspection for Asbestos-Containing Material (ACM), Lead-Based Paint (LBP), Polychlorinated Biphyenyls (PCBs) containing equipment and mercury-containing equipment.

ACM Findings

Mr. Alejandro Daza, a State of Maryland licensed asbestos inspector performed the screening on September 29, 2022 and September 30, 2022. A total of one hundred two (102) bulk samples of suspect asbestos-containing materials were collected from the designated area. Laboratory analytical results identified regulated amounts of asbestos (>1%) in Black Mastic Tar, 9”x9” Brown Floor Tile, 9”x9” Green Floor Tile, and Black Roof Flashing/Sealant. Table I contains the results of the sampling, including location, material description, and analytical result of the bulk samples collected.

Table I – Bulk Sample Results

Sample Number Material Description Sample Location Analytical

Result

339930-01 White Skin Coat Plaster 1st Floor Southeast Room NAD 339930-02 Brown Rough Plaster 1st Floor Southeast Room NAD 339930-03 White Skin Coat Plaster 1st Floor Southeast Stairwell NAD 339930-04 Brown Rough Plaster 1st Floor Southeast Stairwell NAD 339930-05 White Skin Coat Plaster 2nd Floor Room 206 NAD 339930-06 Brown Rough Plaster 2nd Floor Room 206 NAD 339930-07 White Skin Coat Plaster 2nd Floor Room 206 NAD 339930-08 Brown Rough Plaster 2nd Floor Room 206 NAD 339930-09 White Skin Coat Plaster 2nd Floor Room 204 NAD 339930-10 Brown Rough Plaster 2nd Floor Room 204 NAD 339930-11 White Skin Coat Plaster 1st Floor Southwest Room NAD

12100 Beech Forest Road

Sample Number Material Description Sample Location Analytical

Result

339930-12 Brown Rough Plaster 1st Floor Southwest Room NAD 339930-13

White Textured Ceiling Plaster 1st Floor Northeast Room NAD

339930-14 1st Floor Northeast Room NAD 339930-15 1st Floor Northeast Room NAD 339930-16

Grey Ceramic Tile Grout 1st Floor Women’s Bathroom NAD

339930-17 1st Floor Women’s Bathroom NAD 339930-18

Grey Ceramic Tile Mastic 1st Floor Women’s Bathroom NAD

339930-19 1st Floor Women’s Bathroom NAD 339930-20 4” Black Cove base 1st Floor South Room NAD 339930-21 Brown Cove base Mastic 1st Floor South Room NAD 339930-22 4” Black Cove base 2nd Floor Room 201 NAD 339930-23 Brown Cove base Mastic 2nd Floor Room 201 NAD 339930-24

Black Waterproofing Mastic 1st Floor Crawl Space NAD

339930-25 1st Floor Crawl Space NAD 339930-26

Black Mastic Glue Dots 2nd Floor Attic Entrance Doors NAD

339930-27 2nd Floor Attic Entrance Doors NAD 339930-28

Black Pipe Wrap 1st Floor Heater Tank Room NAD

339930-29 1st Floor Heater Tank Room NAD 339930-30

White Seam Sealant 1st Floor Southeast Room NAD

339930-31 1st Floor Southwest Room NAD

339930-32 Black Mastic Tar

1st Floor Southwest 10% Chrysotile

339930-33 1st Floor Southwest 10% Chrysotile

339930-34 White Fine Brick Insulation

1st Floor Southwest NAD 339930-35 1st Floor Southwest NAD 339930-36

White Electrical Cable Insulation 1st Floor Southwest NAD

339930-37 1st Floor Southwest NAD 339930-38 Brown Stair Thread Mastic 1st Floor Stairwell Southeast NAD 339930-39 Brown Stair Thread Mastic 1st Floor Stairwell Southwest NAD 339930-40

Yellow Carpet Mastic 2nd Floor Room 205 NAD

339930-41 2nd Floor Room 207 NAD 339930-42 Grey Floor Leveling Compound 1st Floor Southwest Stairwell NAD 339930-43 Grey Floor Leveling Compound 1st Floor Southwest Stairwell NAD

339930-44 12” x 12” Brown w/ White Dots Floor Tile 1st Floor Southwest Stairwell NAD

339930-45 Yellow Floor Mastic 1st Floor Southwest Stairwell NAD

339930-46 12” x 12” Brown w/ White Dots Floor Tile 1st Floor Southeast Stairwell NAD

339930-47 Yellow Floor Mastic 1st Floor Southeast Stairwell NAD 339930-48 9” x 9” Brown Floor Tile 1st Floor Crawl Space Closet Entrance 5% Chrysotile 339930-49 Black Floor Mastic 1st Floor Crawl Space Closet Entrance NAD 339930-50 9” x 9” Brown Floor Tile 1st Floor Crawl Space Closet Entrance 5% Chrysotile 339930-51 Black Floor Mastic 1st Floor Crawl Space Closet NAD 339930-52 9” x 9” Green Floor Tile 2nd Floor Room 205 2% Chrysotile 339930-53 Black Floor Mastic 2nd Floor Room 205 NAD

Sample Number Material Description Sample Location Analytical

Result

339930-54 9” x 9” Green Floor Tile 2nd Floor Hallway West 2% Chrysotile 339930-55 Black Floor Mastic 2nd Floor Hallway West NAD 339930-56 White Window Blinds Canvas Rope 2nd Floor Room 206 NAD 339930-57 White Window Blinds Canvas Rope 2nd Floor Room 204 NAD 339930-58 White Window Blinds Canvas Blinds 2nd Floor Room 206 NAD 339930-59 White Window Blinds Canvas Blinds 2nd Floor Room 204 NAD 339930-60

Fine Hose White Canvas Rope 2nd Floor Northwest NAD

339930-61 2nd Floor Northwest NAD 339930-62

Grey Fine Blanket 2nd Floor Northwest NAD

339930-63 2nd Floor Northwest NAD 339930-64 White Skin Coat Plaster 1st Floor Northwest Room NAD 339930-65 Grey Rough Plaster 1st Floor Northwest Room NAD 339930-66 White Skin Coat Plaster 1st Floor Northeast Room NAD 339930-67 Grey Rough Plaster 1st Floor Northeast Room NAD 339930-68 White Skin Coat Plaster 1st Floor Southwest Wall NAD 339930-69 Grey Rough Plaster 1st Floor Southwest Wall NAD 339930-70 White Skin Coat Plaster 1st Floor South Wall NAD 339930-71 Grey Rough Plaster 1st Floor South Wall NAD 339930-72 White Skin Coat Plaster 1st Floor North Wall NAD 339930-73 Grey Rough Plaster 1st Floor North Wall NAD 339930-74 White Skin Coat Plaster 1st Floor Northeast Wall NAD 339930-75 Grey Rough Plaster 1st Floor Northeast Wall NAD 339930-76 White Skin Coat Plaster 1st Floor Southeast Wall NAD 339930-77 Grey Rough Plaster 1st Floor Southeast Wall NAD 339930-78

White Drywall 1st Floor West Room NAD

339930-79 1st Floor West Room NAD 339930-80

White Joint Compound 1st Floor West Room NAD

339930-81 1st Floor West Room NAD 339930-82 1st Floor West Room NAD 339930-83

White Window Caulking

North Exterior NAD 339930-84 South Exterior NAD 339930-85 North Exterior NAD 339930-86 South Exterior NAD 339930-87

White Window Glazing North Exterior NAD

339930-88 South Exterior NAD 339930-89

White Door Caulking North Exterior Door NAD

339930-90 South Exterior Door NAD 339930-91

White/Grey Window Glazing Exterior Green House NAD

339930-92 Exterior Green House NAD 339930-93 Grey Roof Shingle West Roof NAD 339930-94 Grey Roof Shingle East Roof NAD 339930-95

Black Roof Paper Felt West Roof NAD

339930-96 East Roof NAD

Sample Number Material Description Sample Location Analytical

Result

339930-97 Black Roof Flashing / Penetration Sealant

West Roof 10% Chrysotile

339930-98 East Roof 10% Chrysotile

339930-99 Brown Attic Insulation

1st Floor West Building NAD 339930-

100 2nd Floor East Building NAD

339930-

Grey/Red Brick Grout North Exterior NAD

339930- 102 South Exterior NAD

Table II contains a listing of identified ACM at the above referenced location. This table includes the locations, types of materials and general material condition.

Table II – Asbestos Containing Building Materials

Material Description Material Location Quantity NESHAP Category Condition

9”x9” Green Vinyl Floor Tile Throughout 2nd Floor 2,500 SF CAT I Good

9”x9” Brown Vinyl Floor Tile 1st Floor Crawl Space Closet 24 SF CAT I Good

Black Wall Mastic/Tar Cold Storage Closet 12 LF CAT II Good

Roof Flashing/Penetration Sealant

East/West Building 18 LF CAT I Good

CAT I – Category I Non-Friable Asbestos-Containing Material (Roofing, flooring and gaskets) CAT II – Category II Non-Friable Asbestos-Containing Material (Roofing, flooring and gaskets) SF – Square Feet; LF – Linear Feet

VERTEX's inspector performed both the visual inspection and bulk sampling at the referenced location in accordance with methods outlined in the U.S. Environmental Protection Agency (EPA) guidance document titled, "Guidance for Controlling Asbestos-Containing Materials in Buildings" (Document No. 560/5- 85/024). The findings of this report are based upon observations of accessible materials and the number of representative bulk samples that were collected and analyzed.

Bulk samples of suspect materials were analyzed by AMA Analytical Services, Inc. of Lanham, Maryland (AMA) using the approved polarized light microscopy with dispersion staining (PLM/DS) method. Only the asbestos content, if any, is recorded in the bulk sample ‘Report of Analysis’.

If a material contains greater than 1% asbestos, it is considered to be asbestos-containing material. Upon client request, or at the recommendation of the analyst, the Point Counting Method, or Transmission Electron Microscopy, Non-Organically Bound (TEM-NOB) Analysis Method may be used to verify the presence/absence of asbestos when a sample contains less than 10% asbestos by visual estimate and/or is a non-friable organically bound building material. Please reference Appendices A, B and C for the laboratory analytical results, samples locations and photographic log

AMA is an accredited laboratory by the EPA for "Interim Asbestos Bulk Sample Analysis Quality Assurance Program". AMA is also accredited by the National Voluntary Laboratory Accreditation Program (NVLAP).

The PLM/DS analytical method is modeled after 40 CFR Part 763, Subpart F, Appendix A: "Interim Method for the Determination of Asbestos in Bulk Insulation Samples".

Conclusions and Recommendations

VERTEX recommends the removal of identified asbestos-containing materials should future renovation activities disturb or impact the identified ACM in any way. A contractor holding a current State of Maryland Asbestos Abatement license should perform the abatement of all identified asbestos-containing materials in accordance with all applicable federal, state, and local regulations and standards.

All identified ACBMs that remain in place should be maintained under an asbestos Operation and Maintenance (O&M) Program in accordance with current Occupational Safety and Health Administration (OSHA) standards (29 CFR 1926.1001).

It is recommended that suspect materials not identified within this report and uncovered during any future renovation/demolition activities be assumed to be asbestos-containing, unless future bulk sampling determines otherwise.

Lead-Based Paint Findings

VERTEX collected representative samples of suspect lead-containing paint from site. Paint bulk samples were also sent to AMA for analysis. AMA participates in the American Industrial Hygiene Association’s (AIHA) Environmental Lead Proficiency Analytical Testing (ELPAT) for Lead program. Samples were analyzed by Flame Atomic Absorption Spectroscopy EPA Method 7420. State of Maryland regulations define lead-based paint as paint by weight which contains greater than 0.5 % by weight of lead. OSHA regulations also apply to detectable amounts less than or equal to 0.5% of lead.

Table III contains a summary of the paint sampling results at the site:

Table III – Asbestos Containing Building Materials

Sample Number Color Substrate/Component Location

Lead Concentration (% by weight)

640163-1 White Window Sash / Wood 2nd Floor East Side Room – A1 0.14

640163-2 White w/ Green Basecoat Window Frame / Wood 2nd Floor East Side

Room – A1 0.16

640163-3 White w/ Green Basecoat Windowsill / Wood 2nd Floor East Side

Room – A1 0.38

640163-4 White w/ Green Basecoat

Rear Entrance Door / Wood Door Frame

2nd Floor East Side Room – A1 24

640163-5 White w/ Green Basecoat

Rear Entrance Door / Wood Door

2nd Floor East Side Room – A1 19

640163-6 White Ceiling Plaster 2nd Floor East Side Room 201 0.22

640163-7 White Wall Plaster 2nd Floor East Side Room 201 0.0091

640163-8 White Wall Plaster 2nd Floor East Side Room 201 13

640163-9 Dark Brown Window Sash / Wood 2nd Floor East Side Room 201 19

640163-10 White w/ Green Basecoat Wall Plaster Ground Floor East Side

Room 107 0.018

640163-11 Brown w/ Green Basecoat Ceiling Plaster Ground Floor East Side

Room 107 0.04

640163-12 White w/ Green Basecoat Wall Plaster Ground Floor East Side

Building Hallway 0.12

640163-13 White w/ Green Basecoat Ceiling Plaster Ground Floor East Side

Building Hallway 0.042

640163-14 Dark Yellow w/ Tan and Green Basecoat Ceiling Plaster Ground Floor West Side

Electrical Closet 0.27

640163-15 White w/ Tan Basecoat Door Frame / Wood Ground Floor West Side

Main Entrance Room <0.0079

640163-16 White w/ Tan Basecoat Door / Wood Ground Floor West Side

Main Entrance Room 0.012

640163-17 White w/ Green Basecoat Wall Plaster Ground Floor West Side

Restroom 4.7

640163-18 Dark Brown Stairwell Railing / Wood Ground Floor East Side Stairwell 0.14

640163-19 White Wall Plaster 2nd Floor West Side East Corner <0.0082

640163-20 White w/ Green Basecoat Windowsill / Wood 2nd Floor West Side East

Corner 0.14

640163-21 White w/ Green Basecoat Window Frame / Wood 2nd Floor West Side East

Corner Room 13

640163-22 White Window Sash / Wood 2nd Floor West Side East Corner Room 7.5

640163-23 White Door Frame / Wood 2nd Floor West Side East Corner Room 0.0099

640163-24 White Door / Wood 2nd Floor West Side East Corner Room <0.0078

640163-25 White Ceiling Plaster 2nd Floor West Side Room Next to East

Corner Room <0.0058

640163-26 White Drywall / Wall 2nd Floor West Side Hallway <0.0085

640163-27 White w/ Green Basecoat

Rear Wall Entrance Door / Door Frame

2nd Floor West Side West Corner Room 0.085

640163-28 White w/ Green Basecoat

Rear Wall Entrance Door / Door

2nd Floor West Side West Corner Room 28

640163-29 White Door Frame / Wood Exterior of East Side 33 640163-30 White Door / Wood Exterior of East Side 66

640163-31 White Window Frame / Wood Exterior East Side Hallway 15

Please reference Appendix B for the laboratory analytical results.

LBP Regulatory Implications and Regulations

The implications of lead-containing paint existing in a non-residential building are related to the future use of the facility and the need to impact these painted surfaces during the demolition process.

OSHA defines any detectable levels of lead as a potential lead exposure hazard to workers doing construction-type work on these surfaces and requires appropriate safety and health measures be followed as stated in 29 CFR 1926.62. OSHA states that until the employer performs an exposure assessment and documents that the employees are not exposed above the permissible exposure limit (PEL) of greater than 50 micrograms per cubic meter (µg/m3) of air, the employer must treat employees as if they were exposed above the PEL for the following operations:

• Manual demolition of structures, manual scraping, manual sanding, and use of heat gun where lead-containing coatings or paints are present;

• Abrasive blasting, enclosure movement and removal;

• Power tool cleaning;

• Lead burning;

• Using lead-containing mortar or spray painting with lead-containing paint;

• Abrasive blasting, rivet busting, or welding, cutting, or burning on any structure where lead-containing coatings or paint are present;

• Cleanup activities where dry expendable abrasives are used; and

• Any other task the employer believes may cause exposure in excess of the PEL.

Work precautions include providing respiratory protection, protective work clothing and equipment, changing areas, hand washing facilities, biological monitoring, and training until an exposure assessment has determined that the work activity will result in an exposure below the PEL. Additional requirements under this standard include a written compliance program as well as record-keeping.

Waste disposal is governed by the Federal Resource Conservation and Recovery Act (RCRA) regulations that distinguish between solid wastes and hazardous wastes. Solid wastes include general construction debris and are subject to minimum handling, transportation, and landfill disposal requirements under RCRA regulations. Hazardous wastes, including certain lead-containing materials, are subject to restrictions designed to prevent the hazardous materials from entering the environment. Lead-containing waste is classified as hazardous or non-hazardous based on the results of the Toxic Characteristic Leachate Procedure (TCLP) testing. The TCLP test measures whether or not lead leaches from the waste in excess of the regulated level of 5.0 milligrams per liter (mg/L). If the results of the TCLP analysis exceed this level, the waste must be handled, transported and disposed as a hazardous waste in an approved waste site, reclamation facility or incinerator site.

Recommendations

It is recommended that any contractor performing work that will disturb lead-containing paint comply with OSHA Standard 29 CFR 1926.62 “Lead in Construction Standard”, as well as all applicable federal, state, and local requirements pertaining to the disturbance of lead-containing paint.

PCB-Containing Materials

The PCB-containing materials screening objective was to evaluate for the presence of suspect PCB-containing light ballasts that would require special management during planned renovation or demolition activities.

Building renovations may involve the removal and disposal of lamps and/or ballasts. The proper method for disposing spent ballasts is dependent on the type and condition of the ballast’s and the state(s) in which the ballast’s are removed and discarded.

Fluorescent light ballast’s manufactured prior to 1979 may contain small quantities of PCBs. Recently manufactured fluorescent light ballasts are required to have “No PCB” labels. Light ballasts that do not have “No PCB” labels should be treated as PCB-containing and handled and disposed of accordingly.

As part of the site investigation, VERTEX performed a limited site reconnaissance of representative light ballasts throughout the designated area to determine the presence/absence of PCBs within the ballasts.

Representative light ballasts that were inspected had “No PCBs” labels.

It is recommended that during removal and/or upgrade of any lighting ballasts, ballasts which are being removed should be inspected for the presence/absence of PCB labeling. Any unlabeled light ballasts identified are assumed to be PCB-containing. It is recommended that the unlabeled lighting ballasts be disposed of by an appropriately licensed contractor in accordance with a written project specification addressing Federal and State of Maryland hazardous waste disposal guidelines.

Mercury

Mercury-containing equipment (i.e., fluorescent and high-intensity discharge (HID) lamps, HVAC systems switches, thermometers, gas stoves, electrical contact switches, sensors, space heaters, gas-fired refrigerators, gas-fired water heaters, etc.) contain a small amount of mercury that can potentially be harmful to the environment and to human health. Mercury is regulated under the Resource Conservation

Recovery Act (RCRA), which is administered by the United States Environmental Protection Agency

(USEPA).

As part of the field work, VERTEX performed a limited inspection for mercury-containing equipment in the building. VERTEX identified the following mercury-containing equipment: two (2) thermostats and approximately 330 fluorescent light tubes. . These items should be disposed of by an appropriately licensed contractor in accordance with a written project specification addressing Federal and State of Maryland hazardous waste disposal guidelines.

Respectfully submitted, The Vertex Companies, Inc.

Derek Dauberman Division Manager, IHBS VERTEX – Columbia, MD

Attachments

APPENDIX A

ASBESTOS BULK SAMPLE RESULTS

Chain of Custody: 339930 Client: Vertex Address: 6990 Columbia Gateway Drive

Suite 325 Columbia, MD 21046

Attention: Derek Dauberman

Job Name: Patuxent Wildlife Refuge Job Location: 12100 Beech Forest Road, Laurel, MD Job Number: 82475 P.O. Number: Not Provided

Date Submitted: 10/06/2022 Date Analyzed: 10/12/2022 Report Date: 10/12/2022 Date Sampled: 09/29/2022 - 09/30/2022 Person Submitting: Alejandro Daza

CERTIFICATE OF ANALYSIS

Summary of Polarized Light Microscopy

AMA

Sample Number

Client Sample Number

Total Asbestos

Chrysotile Percent

Amosite Percent

Crocidolite Percent

Other Asbestos Percent

Mineral Wool Percent

Fiberglass Percent

Organic Percent

Synthetic Percent

Other Percent

Particulate Percent

Sample Type

Sample Color

Homogeneity Analyst

ID

Comments

339930-1 PWR-01 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-2 PWR-02 NAD -- -- -- -- -- -- TR -- -- 100 BC Brown Homogeneous SW

339930-3 PWR-03 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-4 PWR-04 NAD -- -- -- -- -- -- -- -- -- 100 BC Brown Homogeneous SW

339930-5 PWR-05 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-6 PWR-06 NAD -- -- -- -- -- -- -- -- -- 100 BC Brown Homogeneous SW

339930-7 PWR-07 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-8 PWR-08 NAD -- -- -- -- -- -- -- -- -- 100 BC Brown Homogeneous SW

339930-9 PWR-09 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-10 PWR-10 NAD -- -- -- -- -- -- -- -- -- 100 BC Brown Homogeneous SW

339930-11 PWR-11 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-12 PWR-12 NAD -- -- -- -- -- -- -- -- -- 100 BC Brown Homogeneous SW

339930-13 PWR-13 NAD -- -- -- -- -- -- -- -- -- 100 CPL White Homogeneous SW

339930-14 PWR-14 NAD -- -- -- -- -- -- -- -- -- 100 CPL White Homogeneous SW

339930-15 PWR-15 NAD -- -- -- -- -- -- -- -- -- 100 CPL White Homogeneous SW

339930-16 PWR-16 NAD -- -- -- -- -- -- -- -- -- 100 Grout Gray Homogeneous SW

339930-17 PWR-17 NAD -- -- -- -- -- -- -- -- -- 100 Grout Gray Homogeneous SW

339930-18 PWR-18 NAD -- -- -- -- -- -- -- -- -- 100 LC Gray Homogeneous SW

339930-19 PWR-19 NAD -- -- -- -- -- -- -- -- -- 100 LC Gray Homogeneous SW

339930-20 PWR-20 NAD -- -- -- -- -- -- -- -- -- 100 CB Black Homogeneous SW

339930-21 PWR-21 NAD -- -- -- -- -- -- -- -- -- 100 MS Brown Homogeneous SW

339930-22 PWR-22 NAD -- -- -- -- -- -- -- -- -- 100 CB Black Homogeneous SW

339930-23 PWR-23 NAD -- -- -- -- -- -- TR -- -- 100 MS Brown Homogeneous SW

339930-24 PWR-24 NAD -- -- -- -- -- -- -- -- -- 100 MS Black Homogeneous SW

339930-25 PWR-25 NAD -- -- -- -- -- -- -- -- -- 100 MS Black Homogeneous SW

339930-26 PWR-26 NAD -- -- -- -- TR -- -- -- -- 100 MS Black Homogeneous SW

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 1/5

Address: 6990 Columbia Gateway Drive

Suite 325 Columbia, MD 21046

Attention: Derek Dauberman

Job Name: Patuxent Wildlife Refuge Job Location: 12100 Beech Forest Road, Laurel, MD Job Number: 82475 P.O. Number: Not Provided

Date Submitted: 10/06/2022 Date Analyzed: 10/12/2022 Report Date: 10/12/2022 Date Sampled: 09/29/2022 - 09/30/2022 Person Submitting: Alejandro Daza

339930-27 PWR-27 NAD -- -- -- -- TR -- -- -- -- 100 MS Black Homogeneous SW

339930-28 PWR-28 NAD -- -- -- -- -- -- TR -- -- 100 PW Black Homogeneous SW

339930-29 PWR-29 NAD -- -- -- -- -- -- TR -- -- 100 PW Black Homogeneous SW

339930-30 PWR-30 NAD -- -- -- -- -- TR TR -- -- 100 SSL White Homogeneous SW

339930-31 PWR-31 NAD -- -- -- -- -- -- TR -- -- 100 SSL White Homogeneous SW

339930-32 PWR-32 10 10 -- -- -- -- -- -- -- -- 90 Tar Black Homogeneous SW

339930-33 PWR-33 10 10 -- -- -- -- -- -- -- -- 90 Tar Black Homogeneous SW

339930-34 PWR-34 NAD -- -- -- -- -- -- -- -- -- 100 Fire Br. White Homogeneous SW

339930-35 PWR-35 NAD -- -- -- -- -- -- -- -- -- 100 Fire Br. White Homogeneous SW

339930-36 PWR-36 NAD -- -- -- -- -- -- 80 -- -- 20 CI White Homogeneous SW

339930-37 PWR-37 NAD -- -- -- -- -- -- 80 -- -- 20 CI White Homogeneous SW

339930-38 PWR-38 NAD -- -- -- -- -- -- TR -- -- 100 MS Brown Homogeneous SW

339930-39 PWR-39 NAD -- -- -- -- -- -- TR -- -- 100 MS Brown Homogeneous SW

339930-40 PWR-40 NAD -- -- -- -- -- -- -- -- -- 100 CM Yellow Homogeneous SW

339930-41 PWR-41 NAD -- -- -- -- -- -- TR -- -- 100 CM Yellow Homogeneous SW

339930-42 PWR-42 NAD -- -- -- -- -- -- -- -- -- 100 LC Gray Homogeneous SW

339930-43 PWR-43 NAD -- -- -- -- -- -- -- -- -- 100 LC Gray Homogeneous SW

339930-44 PWR-44 NAD -- -- -- -- -- -- -- -- -- 100 FT Multi Homogeneous SW

339930-45 PWR-45 NAD -- -- -- -- -- -- TR -- -- 100 MS Yellow Homogeneous SW

339930-46 PWR-46 NAD -- -- -- -- -- -- -- -- -- 100 FT Multi Homogeneous SW

339930-47 PWR-47 NAD -- -- -- -- -- -- TR -- -- 100 MS Yellow Homogeneous SW

339930-48 PWR-48 5 5 -- -- -- -- -- -- -- -- 95 FT Brown Homogeneous SW

339930-49 PWR-49 NAD -- -- -- -- -- -- TR -- -- 100 MS Black Homogeneous SW

339930-50 PWR-50 5 5 -- -- -- -- -- -- -- -- 95 FT Brown Homogeneous SW

339930-51 PWR-51 NAD -- -- -- -- -- -- TR -- -- 100 MS Black Homogeneous SW

339930-52 PWR-52 2 2 -- -- -- -- -- -- -- -- 98 FT Green Homogeneous SW

CERTIFICATE OF ANALYSIS

Summary of Polarized Light Microscopy

AMA

Sample Number

Client Sample Number

Total Asbestos

Chrysotile Percent

Amosite Percent

Crocidolite Percent

Other Asbestos Percent

Mineral Wool Percent

Fiberglass Percent

Organic Percent

Synthetic Percent

Other Percent

Particulate Percent

Sample Type

Sample Color

Homogeneity Analyst

ID

Comments

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 2/5

Address: 6990 Columbia Gateway Drive

Suite 325 Columbia, MD 21046

Attention: Derek Dauberman

Job Name: Patuxent Wildlife Refuge Job Location: 12100 Beech Forest Road, Laurel, MD Job Number: 82475 P.O. Number: Not Provided

Date Submitted: 10/06/2022 Date Analyzed: 10/12/2022 Report Date: 10/12/2022 Date Sampled: 09/29/2022 - 09/30/2022 Person Submitting: Alejandro Daza

339930-53 PWR-53 NAD -- -- -- -- -- -- -- -- -- 100 MS Black Homogeneous SW

339930-54 PWR-54 2 2 -- -- -- -- -- -- -- -- 98 FT Green Homogeneous SW

339930-55 PWR-55 NAD -- -- -- -- -- -- TR -- -- 100 MS Black Homogeneous SW

339930-56 PWR-56 NAD -- -- -- -- -- -- 60 20 -- 20 Rope White Homogeneous SW

339930-57 PWR-57 NAD -- -- -- -- -- -- 60 20 -- 20 Rope White Homogeneous SW

339930-58 PWR-58 NAD -- -- -- -- -- -- 80 -- -- 20 CVS Tan Homogeneous SW

339930-59 PWR-59 NAD -- -- -- -- -- -- 80 -- -- 20 CVS Tan Homogeneous SW

339930-60 PWR-60 NAD -- -- -- -- -- -- 80 -- -- 20 CVS Off- White

Homogeneous SW

339930-61 PWR-61 NAD -- -- -- -- -- -- 80 -- -- 20 CVS Off- White

Homogeneous SW

339930-62 PWR-62 NAD -- -- -- -- -- -- 30 50 -- 20 Cloth Black Homogeneous SW

339930-63 PWR-63 NAD -- -- -- -- -- -- 30 50 -- 20 Cloth Black Homogeneous SW

339930-64 PWR-64 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-65 PWR-65 NAD -- -- -- -- -- -- -- -- -- 100 BC Gray Homogeneous SW

339930-66 PWR-66 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-67 PWR-67 NAD -- -- -- -- -- -- -- -- -- 100 BC Gray Homogeneous SW

339930-68 PWR-68 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-69 PWR-69 NAD -- -- -- -- -- -- -- -- -- 100 BC Gray Homogeneous SW

339930-70 PWR-70 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-71 PWR-71 NAD -- -- -- -- -- -- -- -- -- 100 BC Gray Homogeneous SW

339930-72 PWR-72 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-73 PWR-73 NAD -- -- -- -- -- -- -- -- -- 100 BC Gray Homogeneous SW

339930-74 PWR-74 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-75 PWR-75 NAD -- -- -- -- -- -- -- -- -- 100 BC Gray Homogeneous SW

339930-76 PWR-76 NAD -- -- -- -- -- -- -- -- -- 100 SKC White Homogeneous SW

339930-77 PWR-77 NAD -- -- -- -- -- -- -- -- -- 100 BC Gray Homogeneous SW

CERTIFICATE OF ANALYSIS

Summary of Polarized Light Microscopy

AMA

Sample Number

Client Sample Number

Total Asbestos

Chrysotile Percent

Amosite Percent

Crocidolite Percent

Other Asbestos Percent

Mineral Wool Percent

Fiberglass Percent

Organic Percent

Synthetic Percent

Other Percent

Particulate Percent

Sample Type

Sample Color

Homogeneity Analyst

ID

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 3/5

Address: 6990 Columbia Gateway Drive

Suite 325 Columbia, MD 21046

Attention: Derek Dauberman

Job Name: Patuxent Wildlife Refuge Job Location: 12100 Beech Forest Road, Laurel, MD Job Number: 82475 P.O. Number: Not Provided

Date Submitted: 10/06/2022 Date Analyzed: 10/12/2022 Report Date: 10/12/2022 Date Sampled: 09/29/2022 - 09/30/2022 Person Submitting: Alejandro Daza

339930-78 PWR-78 NAD -- -- -- -- -- TR TR -- -- 100 DW White Homogeneous SW

339930-79 PWR-79 NAD -- -- -- -- -- -- 10 -- -- 90 DW Multi Homogeneous SW

339930-80 PWR-80 NAD -- -- -- -- -- -- -- -- -- 100 JC White Homogeneous SW

339930-81 PWR-81 NAD -- -- -- -- -- -- -- -- -- 100 JC White Homogeneous SW

339930-82 PWR-82 NAD -- -- -- -- -- -- -- -- -- 100 JC White Homogeneous SW

339930-83 PWR-83 NAD -- -- -- -- -- -- -- -- -- 100 CK White Homogeneous SW

339930-84 PWR-84 NAD -- -- -- -- -- -- -- -- -- 100 CK White Homogeneous SW

339930-85 PWR-85 NAD -- -- -- -- -- -- -- -- -- 100 CK White Homogeneous SW

339930-86 PWR-86 NAD -- -- -- -- -- -- -- -- -- 100 CK White Homogeneous SW

339930-87 PWR-87 NAD -- -- -- -- -- -- -- -- -- 100 CK White Homogeneous SW

339930-88 PWR-88 NAD -- -- -- -- -- -- -- -- -- 100 CK White Homogeneous SW

339930-89 PWR-89 NAD -- -- -- -- -- -- -- -- -- 100 CK White Homogeneous SW

339930-90 PWR-90 NAD -- -- -- -- -- -- -- -- -- 100 CK White Homogeneous SW

339930-91 PWR-91 NAD -- -- -- -- -- -- -- -- -- 100 WG White Homogeneous SW

339930-92 PWR-92 NAD -- -- -- -- -- -- -- -- -- 100 WG White Homogeneous SW

339930-93 PWR-93 NAD -- -- -- -- -- -- -- -- -- 100 RS Gray Homogeneous SW

339930-94 PWR-94 NAD -- -- -- -- -- -- -- -- -- 100 RS Gray Homogeneous SW

339930-95 PWR-95 NAD -- -- -- -- -- -- 25 5 -- 70 Felt P. Black Homogeneous SW

339930-96 PWR-96 NAD -- -- -- -- -- -- 25 5 -- 70 Felt P. Black Homogeneous SW

339930-97 PWR-97 10 10 -- -- -- -- -- -- -- -- 90 FLS Black Homogeneous SW

339930-98 PWR-98 10 10 -- -- -- -- -- -- -- -- 90 FLS Black Homogeneous SW

339930-99 PWR-99 NAD -- -- -- -- -- -- 80 -- -- 20 AI Brown Homogeneous SW

339930-

PWR-100 NAD -- -- -- -- -- -- 80 -- -- 20 AI Brown Homogeneous SW

339930-

PWR-101 NAD -- -- -- -- -- -- -- -- -- 100 Grout Gray Homogeneous SW

CERTIFICATE OF ANALYSIS

Summary of Polarized Light Microscopy

AMA

Sample Number

Client Sample Number

Total Asbestos

Chrysotile Percent

Amosite Percent

Crocidolite Percent

Other Asbestos Percent

Mineral Wool Percent

Fiberglass Percent

Organic Percent

Synthetic Percent

Other Percent

Particulate Percent

Sample Type

Sample Color

Homogeneity Analyst

ID

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 4/5

Address: 6990 Columbia Gateway Drive

Suite 325 Columbia, MD 21046

Attention: Derek Dauberman

Job Name: Patuxent Wildlife Refuge Job Location: 12100 Beech Forest Road, Laurel, MD Job Number: 82475 P.O. Number: Not Provided

Date Submitted: 10/06/2022 Date Analyzed: 10/12/2022 Report Date: 10/12/2022 Date Sampled: 09/29/2022 - 09/30/2022 Person Submitting: Alejandro Daza

339930-

PWR-102 NAD -- -- -- -- -- -- -- -- -- 100 Grout Gray Homogeneous SW

CERTIFICATE OF ANALYSIS

Summary of Polarized Light Microscopy

AMA

Sample Number

Client Sample Number

Total Asbestos

Chrysotile Percent

Amosite Percent

Crocidolite Percent

Other Asbestos Percent

Mineral Wool Percent

Fiberglass Percent

Organic Percent

Synthetic Percent

Other Percent

Particulate Percent

Sample Type

Sample Color

Homogeneity Analyst

ID

Comments

The following footnotes only apply to those samples which the total asbestos result is flagged with a note number.

TEM RECOMMENDATION - Please note, due to resolution limitations with optical microscopy and/or interference from matrix components of this sample, results which are reported via PLM as negative or trace (<1%) for asbestos may contain a significant quantity of asbestos. It is recommended that the additional analytical technique of TEM be used to check for asbestos fibers below the resolution limits of optical microscopy.

MATRIX REDUCTION RECOMMENDATION - Please note, due to interference from the matrix components of this sample, results which are reported via PLM as negative or trace (<1%) for asbestos may contain a significant quantity of asbestos which is obscured from view. It is recommended that the additional preparation technique of gravimetric reduction be performed on this sample to minimize the obscuring effects of matrix components, followed by reanalysis by PLM and/or TEM.

Analysis Method - EPA/600/R-93/116 dated July 1993 NAD = "No Asbestos Detected" TR = "Trace equals less than 1% of this component"

Uncertainty: For samples containing asbestos in range of 1-10% the CV is 0.43, 11-35% CV=0.55, >35 CV=0.23. All results are to be considered preliminary and subject to change unless signed by the Technical Director or Deputy.

Analyst(s): Surat Watson

Technical Director

Michael Greenberg

This report applies only to the sample, or samples, investigated and is not necessarily indicative of the quality or condition of apparently identical or similar products. As a mutual protection to clients, the public, and these Laboratories, this report is submitted and accepted for the exclusive use of the client to whom it is addressed and upon the condition that it is not to be used, in whole or in part, in any advertising or publicity matter without prior written authorization from us. Sample types, locations, and collection protocols are based upon the information provided by the persons submitting them and, unless collected by personnel of these Laboratories, we expressly disclaim any knowledge and liability for the accuracy and completeness of this information. Residual sample material will be discarded in accordance with the appropriate regulatory guidelines, unless otherwise requested by the client. NVLAP accreditation applies only to polarized light microscopy of bulk samples and transmission electron microscopy of AHERA air samples. This report must not be used to claim, and does not imply product certification, approval, or endorsement by NVLAP or any agency of the Federal Government. All rights reserved. AMA Analytical Services, Inc.

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 5/5

APPENDIX B

PAINT CHIP SAMPLE RESULTS

Chain of Custody: 640163

Address: 6990 Columbia Gateway Drive

Suite 325 Columbia, MD 21046

Attention: Derek Dauberman

Job Name: USGS - Patuxent Wildlife Research Center

Job Location: Patuxent Wildlife Research Center, Laurel;, MD

Job Number: Not Provided P.O. Number: Not Provided

Date Submitted: 10/04/2022 Date Analyzed: 10/07/2022 Report Date: 10/07/2022 Date Sampled: 09/29/2022 Person Submitting: N/A

CERTIFICATE OF ANALYSIS

Summary of Atomic Absorption Analysis for Lead

AMA Sample Number Client Sample Number Analysis Type Sample Type Reporting Limit Final Result Comments

640163-1 USGS-09-29-01 Flame AA Paint Chip 0.0056 %Pb 0.14 %Pb

640163-2 USGS-09-29-02 Flame AA Paint Chip 0.0082 %Pb 0.16 %Pb

640163-3 USGS-09-29-03 Flame AA Paint Chip 0.008 %Pb 0.38 %Pb

640163-4 USGS-09-29-04 Flame AA Paint Chip 0.0056 %Pb 24 %Pb

640163-5 USGS-09-29-05 Flame AA Paint Chip 0.005 %Pb 19 %Pb

640163-6 USGS-09-29-06 Flame AA Paint Chip 0.0076 %Pb 0.22 %Pb

640163-7 USGS-09-29-07 Flame AA Paint Chip 0.0072 %Pb 0.0091 %Pb

640163-8 USGS-09-29-08 Flame AA Paint Chip 0.0077 %Pb 13 %Pb

640163-9 USGS-09-29-09 Flame AA Paint Chip 0.0085 %Pb 19 %Pb

640163-10 USGS-09-29-10 Flame AA Paint Chip 0.0068 %Pb 0.018 %Pb

640163-11 USGS-09-29-11 Flame AA Paint Chip 0.0046 %Pb 0.04 %Pb

640163-12 USGS-09-29-12 Flame AA Paint Chip 0.0069 %Pb 0.12 %Pb

640163-13 USGS-09-29-13 Flame AA Paint Chip 0.0067 %Pb 0.042 %Pb

640163-14 USGS-09-29-14 Flame AA Paint Chip 0.0059 %Pb 0.27 %Pb

640163-15 USGS-09-29-15 Flame AA Paint Chip 0.0079 %Pb <0.0079 %Pb

640163-16 USGS-09-29-16 Flame AA Paint Chip 0.0072 %Pb 0.012 %Pb

640163-17 USGS-09-29-17 Flame AA Paint Chip 0.0048 %Pb 4.7 %Pb

640163-18 USGS-09-29-18 Flame AA Paint Chip 0.009 %Pb 0.14 %Pb

640163-19 USGS-09-29-19 Flame AA Paint Chip 0.0082 %Pb <0.0082 %Pb

640163-20 USGS-09-29-20 Flame AA Paint Chip 0.0061 %Pb 0.14 %Pb

640163-21 USGS-09-29-21 Flame AA Paint Chip 0.0062 %Pb 13 %Pb

640163-22 USGS-09-29-22 Flame AA Paint Chip 0.004 %Pb 7.5 %Pb

640163-23 USGS-09-29-23 Flame AA Paint Chip 0.0082 %Pb 0.0099 %Pb

640163-24 USGS-09-29-24 Flame AA Paint Chip 0.0078 %Pb <0.0078 %Pb

640163-25 USGS-09-29-25 Flame AA Paint Chip 0.0058 %Pb <0.0058 %Pb

640163-26 USGS-09-29-26 Flame AA Paint Chip 0.0085 %Pb <0.0085 %Pb

640163-27 USGS-09-29-27 Flame AA Paint Chip 0.0069 %Pb 0.085 %Pb

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 1/2

Chain of Custody: 640163

Address: 6990 Columbia Gateway Drive

Suite 325 Columbia, MD 21046

Attention: Derek Dauberman

Job Name: USGS - Patuxent Wildlife Research Center

Job Location: Patuxent Wildlife Research Center, Laurel;, MD

Job Number: Not Provided P.O. Number: Not Provided

Date Submitted: 10/04/2022 Date Analyzed: 10/07/2022 Report Date: 10/07/2022 Date Sampled: 09/29/2022 Person Submitting: N/A

640163-28 USGS-09-29-28 Flame AA Paint Chip 0.0063 %Pb 28 %Pb

640163-29 USGS-09-29-29 Flame AA Paint Chip 0.0063 %Pb 33 %Pb

640163-30 USGS-09-29-30 Flame AA Paint Chip 0.006 %Pb 66 %Pb

640163-31 USGS-09-29-31 Flame AA Paint Chip 0.008 %Pb 15 %Pb

CERTIFICATE OF ANALYSIS

Summary of Atomic Absorption Analysis for Lead

AMA Sample Number Client Sample Number Analysis Type Sample Type Reporting Limit Final Result Comments

Analysis Method for Flame: Air, Wipes, Paints, and Soil/Solids: EPA 600/R-93/200(M)-7000B; Water: SM-3111B Analysis Method For Furnace: Air, Wipes, Paints, and Soil/Solids : EPA 600/R-93/200(M)-7010; Water: SM-3113B N/A = Not Applicable mg/Kg = parts per million (ppm) on a dry weight basis mg/L = parts per million (ppm) %Pb = percent lead on a dry weight basis ug = micrograms ug/L = parts per billion (ppb) Note: All samples were received in good condition unless otherwise noted.

Note: All results have two significant digits. Any additional digits shown should not be considered when interpreting the result.

Analyst(s): Jean-Paul Littleton, Suphin Chinnapad

See QC Summary for analytical results of quality control samples associated with these samples.

Air and Wipe results are not corrected for any blank results. Final results for air and wipe samples are based on client supplied information not verified by this laboratory.

All results are to be considered preliminary and subject to change unless signed by the Technical Director or Deputy.

Technical Director

George Land

This report applies only to the sample, or samples, investigated and is not necessarily indicative of the quality or condition of apparently identical or similar products. As a mutual protection to clients, the public, and these Laboratories, this report is submitted and accepted for the exclusive use of the client to whom it is addressed and upon the condition that it is not to be used, in whole or in part, in any advertising or publicity matter without prior written authorization from us. Sample types, locations, and collection protocols are based upon the information provided by the persons submitting them and, unless collected by personnel of these Laboratories, we expressly disclaim any knowledge and liability for the accuracy and completeness of this information. Residual sample material will be discarded in accordance with the appropriate regulatory guidelines, unless otherwise requested by the client. This report must not be used to claim, and does not imply product certification, approval, or endorsement by NY ELAP, AIHA-LAP, or any agency of the Federal Government. All rights reserved. AMA Analytical Services, Inc.

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 2/2

QC Summary for SDG #73433

Overview

Analysis Type: Flame AA Sample Type: Paint Chip Analysis Date: 10/07/2022

Samples Included

640163-1 640163-10 640163-11 640163-12 640163-13 640163-14 640163-15 640163-16 640163-17 640163-18 640163-2 640163-3 640163-4 640163-5 640163-6 640163-7 640163-8 640163-9

Preparation Blank

Result: 0.072 ppm

Report Limit Vertification Sample

Percent Recovery: 108.7%

Duplicates

RPD: 9.3%

Matrix Spike Analysis

Spiked Sample Percent Recovery: N/A Spike Duplicate Percent Recovery: N/A

RPD: N/A

Matrix Blank

Result: 0.066 ppm

Laboratory Control Sample #1

Percent Recovery: 117.0%

Laboratory Control Sample #2

Percent Recovery: 113.81%

Reference Sample

Percent Recovery: N/A

Calibration Curve

Correlation: 0.997959

Serial Dilution / Bench Spike

Serial Dilution RPD: 8.2 Bench Spike Percent Recovery: N/A

Notes

The lead content of the sample selected for spike and spike duplicate analysis was more than four times greater than the spike level, making recovery limits for these QC samples not applicable. Serial Dilution Analysis was performed on the unspiked sample with a RPD of 8.2% obtained, within the 10% RPD control limit.

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 1/2

QC Summary for SDG #73434

Overview

Analysis Type: Flame AA Sample Type: Paint Chip Analysis Date: 10/07/2022

Samples Included

640163-19 640163-20 640163-21 640163-22 640163-23 640163-24 640163-25 640163- 26 640163-27 640163-28 640163-29 640163-30 640163-31

Preparation Blank

Result: -0.046 ppm

Report Limit Vertification Sample

Percent Recovery: 109.2%

Duplicates

RPD: N/A

Matrix Spike Analysis

Spiked Sample Percent Recovery: 119.8% Spike Duplicate Percent Recovery: 113.4%

RPD: 5.5%

Matrix Blank

Result: 0.025 ppm

Laboratory Control Sample #1

Percent Recovery: 122.3%

Laboratory Control Sample #2

Percent Recovery: 110.14%

Reference Sample

Percent Recovery: N/A

Calibration Curve

Correlation: 0.999352

Serial Dilution / Bench Spike

Serial Dilution RPD: N/A Bench Spike Percent Recovery: N/A

Notes

Both Duplicate results are below the reporting limit, making RPD limits for these QC samples not applicable. Recovery for Laboratory Control Sample 1 (LCS1) is 122.3%, above the upper control limit of 120%, indicating a possible high bias for results for this sample group. Results for LCS2 and all other QC analyses associated with this sample delivery group are within control limits. This outlier may be the result of an error in the weighing of the LCS reference dust.

4475 Forbes Blvd. · Lanham, MD, 20706 · (301) 459-2640 · Toll Free (800) 346-0961 · Fax (301) 459-2643 2/2

APPENDIX C

SAMPLE LOCATION PLAN

APPENDIX D

PHOTOGRAPHIC LOG

Photographic Documentation

Laurel, Maryland 20708 VERTEX Proj. No. 82475

Photographs taken on September 29, 2022 by A. Daza

Photo #1: Asbestos-containing 9”x9” Green Vinyl Floor Tile. Photo #2: Asbestos-containing 9”x9” Green Vinyl Floor Tile

Photo #3: Asbestos-containing 9”x9” Brown Vinyl Floor Tile. Photo #4: Asbestos-containing 9”x9” Brown Vinyl Floor Tile.

Photo #5: Asbestos-containing Black Wall Mastic/Tar. Photo #6: Asbestos-containing Black Wall Mastic/Tar.

Photographic Documentation

Laurel, Maryland 20708 VERTEX Proj. No. 82475

Photographs taken on September 29, 2022 by A. Daza

Photo #1: Asbestos-containing Grey Roof Flashing. Photo #2: Asbestos-containing Grey Roof Flashing.

Photo #3: LBP on Window Sash / Wood (typical) Photo #4: LBP on Window Frame / Wood.

Photo #5: LBP on Wall Plaster (typical) Photo #6: LBP on Door Frame / Wood (typical)

APPENDIX E

VERTEX PERSONNEL LICENSES