K3237099 LP-48 HazMat Report 3.5.26 - signed.pdf

Prepared for:

Clark Nexsen

4225 Main Street, Suite 1400

Virginia Beach, VA 23462

Hangar LP-48 Norfolk Naval Station Norfolk, Virginia

Revised May 22, 2024 | Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials

May 22, 2024

Clark Nexsen 4225 Main Street, Suite 1400 Virginia Beach, VA 23462

Attn: Mr. Steve Bennett, PE P: (757) 455-5800 E: sbennet@clarknexsen.com

Re: Hazardous Materials Inspection Report P-222 MQ-25 Aircraft Laydown Facilities - Hangar LP-48 Norfolk Naval Station, Norfolk, Virginia Terracon Project No. K3237099

Dear Mr. Bennett:

Terracon Consultants, Inc. (Terracon) is pleased to present the results of the hazardous materials inspection performed for the approximate 42,667 square foot Hangar LP-48 located within the Norfolk Naval Station in Norfolk, Virginia. Our services were performed in general accordance with Terracon Proposal No.

PK3237099 dated May 18, 2023.

Asbestos-containing materials (ACM) were not identified in samples of suspect materials collected during the inspection. Lead was not identified above the inspection. Chromium and cadmium were identified detection limit in the paint samples collected during this inspection. Polychlorinated biphenyls (PCBs) were not detected at concentrations above the l method detection limit in the submitted samples from the building. Please refer to the report for further details.

Terracon appreciates the opportunity to provide environmental consulting services to you on this project. If you should have any questions regarding this report, please contact the undersigned at (864) 292-2901.

Sincerely, Terracon Consultants, Inc.

T. Christopher Hahn, REM For Alicia Coley, CIH Environmental Department Manager Authorized Project Reviewer

Hazardous Materials Inspection Report Hangar LP-48 Norfolk Naval Station Norfolk, Virginia May 22, 2024 Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials i

Table of Contents

EXECUTIVE SUMMARY..................................................................................................ii

1. Introduction

2. Building Description

3. Field Activities

4. Regulatory Overview

5. Findings and Recommendations

6. General Comments

Appendix A Sample Summary Tables

Table 1 Asbestos Inspection Sample Summary

Table 2 Metals in Paint Summary

Table 3 PCB Sample Summary

Appendix B Analytical Laboratory Reports

Appendix C

Appendix D Sample Location Drawings

Appendix E Site Photographs

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EXECUTIVE SUMMARY

Terracon Consultants, Inc. (Terracon) conducted a hazardous materials inspection for the approximate 42,667 square foot Hangar LP-48 located within the Norfolk Naval Station in Norfolk, Virginia. Our inspection was conducted on November 15, 2023, in support of the planned proposed renovations and additions to the existing hangar.

This executive summary is intended as an overview for the convenience of the reader. The complete report must be reviewed in its entirety prior to making decisions regarding this site.

The asbestos-containing material (ACM) inspection was conducted by Mr. Chris Hahn, a Virginia licensed asbestos inspector. The inspection was conducted in general accordance with the sampling protocols outlined in the Environmental Protection

Asbestos Hazard Emergency Response Act (AHERA), and Commonwealth of Virginia regulations.

Asbestos

A total of fifty-four (54) bulk samples were collected from the structure. Many of the bulk samples contained several layers bringing the total number of sample layers analyzed to eighty-seven (87). Sample descriptions, locations, analytical results, and classifications are summarized in Table 1 in Appendix A. Copies of the asbestos laboratory analytical reports are included in Appendix B.

Asbestos was not identified in samples of suspect materials collected during the inspection.

Lead, Chromium, Cadmium in Paint

A total of six (6) paint chip samples were collected from the interior and exterior of the subject structure and submitted to the contract laboratory for analysis for the presence and concentrations of lead, chromium, and cadmium via EPA Method 6010D. The results are summarized in Table 2 in Appendix A. None of the samples submitted for analysis contained lead concentrations detection limit. None of the samples contained lead concentrations that exceed the

-Based Paint of 0.5% by weight.

May 22, 2024 Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials iii t in five (5) of the submitted paint samples: L-2, L-3, L-4, L-5, and L-6.

Cadmium three (3) of the submitted paint samples: L-3, L-4, and L-5.

PCBs

One (1) sample of caulk/sealant associated with the structure was collected and submitted to the contract laboratory for analysis for the presence and concentrations of polychlorinated biphenyls (PCBs) via EPA Method 8082A. The sample, PCB-1, was not reported to contain (s). Please refer to the report for further details. The results are summarized in Table 3 in Appendix A.

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1.0 Introduction

Terracon Consultants, Inc. (Terracon) conducted a hazardous materials inspection on the interior and exterior of Hangar LP-48, an approximate 42,667 square foot aircraft maintenance hangar and associated office space structure located within the Norfolk Naval Station in Norfolk, Virginia. Our inspection was conducted on November 15, 2023, in support of the planned renovations and additions to the existing hangar, and in accordance with our Proposal No. PK3237099, dated May 18, 2023.

1.1 Project Objective

We understand this hazardous materials inspection was requested to identify and sample, where applicable, the following suspect hazardous materials:

Asbestos-containing materials (ACM) Lead, chromium and cadmium containing paint PCB-containing caulks/sealants

In addition, a visual inspection of potentially PCB containing and mercury containing equipment/components was conducted.

ing information regarding the identity, location, condition, and approximate quantities of the above-mentioned hazardous materials in interior and exterior building components (including the roof) prior to renovation of the building.

EPA regulation 40 CFR 61, Subpart M, National Emission Standards for Hazardous Air Pollutants (NESHAP), prohibits the release of asbestos fibers to the atmosphere during renovation or demolition activities. The asbestos NESHAP requires that potentially regulated ACM be identified, classified, and quantified prior to planned disturbances or demolition activities. The Occupational Health and Safety Administration (OSHA) has promulgated worker protection standard for the disturbance of materials containing asbestos during demolition and renovation projects.

The Occupational Health and Safety Administration (OSHA) has promulgated a worker protection standard for the disturbance of lead-containing paints during demolition projects. The limited lead paint sampling was performed to meet informational needs to comply with the OSHA Lead in Construction Standard (29 CRF 1926.62). Currently, proposed renovations or demolition activities which may impact lead paint is subject to OSHA regulation 29 CFR 1926.62 Lead Exposure in Construction. Proposed renovations or demolition activities which may impact cadmium and chromium containing paint are subject to OSHA regulations 29 CFR 1926.1127 and 29 CFR 1926.1126, respectively.

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1.2 General Conditions and Limitations

The hazardous materials inspection encompassed the interior and exterior of the building. At the direction of the Client, the roof system and associated materials were included in the scope of the inspection. The level of effort and associated tasks proposal.

1.3 Reliance

This report is prepared for the exclusive use and reliance of Clark Nexsen (The Client).

Use or reliance by any other party is prohibited without the written authorization of the Client and Terracon.

Reliance on the report by the Client and all authorized parties will be subject to the terms, conditions, Services. The limitation of liability defined in the Agreement for Services is the lient and all relying parties.

2.0 Building Description

The subject building is an approximate 42,667 square foot hangar and office building that was originally constructed in 2004 within the Norfolk Naval Station in Norfolk, Virginia. The building is currently occupied by naval personnel and equipment associated with aircraft maintenance and repair.

The two-story building consists of structural steel framing with concrete masonry unit (CMU) exterior perimeter walls with a partial vinyl panel façade system. The lower roof system is a membrane roof system over a metal steel deck, and the upper roof is a Cantilever standing seem metal roof system. Interior finishes consist of painted CMU walls and reinforced concrete floors, painted drywall walls, vinyl floor tile, ceramic wall and floor tile, and acoustical ceiling tiles suspended on a metal grid system.

3.0 Field Activities

3.1 Asbestos

The asbestos inspection was conducted by Mr. Chris Hahn, a Virginia Licensed Asbestos Building Inspector (License No. 3303001983). A copy of Mr. license is provided in Appendix C. The inspection was conducted on November 15, 2023, in general accordance with National Emissions

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Standard for Hazardous Air Pollutants (NESHAP), Asbestos Hazard Emergency Response Act (AHERA), and Commonwealth of Virginia Regulations.

Visual Assessment

Our inspection activities began with visual observation of the interior and exter ior of the building, including the roof, to identify apparent homogeneous areas of suspect ACM. A homogeneous area consists of building materials, which appear similar throughout in terms of color, texture and date of application. Building materials which were not identified as concrete, glass, wood, masonry, metal or rubber were considered suspect

ACM.

Physical Assessment

A physical assessment of each homogeneous area of suspect ACM was conducted to assess the friability and condition of the materials. A friable material is defined by the EPA as a material, which can be crumbled, pulverized or reduced to powder by hand pressure when dry. Friability was assessed by physically touching suspect materials.

Sample Collection

Based on the results of the visual sampling, bulk samples of suspect ACM were collected in general accordance with AHERA sampling protocols. Random samples of suspect materials were collected in each homogeneous area. Bulk samples were collected using wet methods as applicable to reduce the potential for fiber release. Samples were placed in sealable containers and labeled with unique sample numbers using an indelible marker.

A total of fifty-four (54) bulk samples were collected from the structure. Many of the bulk samples contained several layers bringing the total number of sample layers analyzed to eighty-seven (87). A summary of the suspect ACM samples collected during the inspection is presented in Table 1 in Appendix A.

Sample Analysis

Bulk samples were submitted using chain-of-custody procedures to EMSL Analytical, Inc.

(EMSL) in Cinnaminson, New Jersey. EMSL is accredited by the National Voluntary Laboratory Accreditation Program (NVLAP Accreditation No. 101048-0) and Virginia (Lab Accreditation No. 3333-000075) to analyze suspect asbestos-containing bulk materials.

The samples were analyzed using Polarized Light Microscopy (PLM) following EPA Method 600/R-93/116. The percentage of asbestos, where applicable, was determined by microscopical visual estimation.

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3.2 Lead, Chromium, and Cadmium in Paint

The lead, chromium, and cadmium in paint sampling was conducted by Chris Hahn of Terracon. Paint chip samples were collected from homogenous painted surfaces identified to determine its lead, chromium, and cadmium content, measured in milligrams/Kilogram dry weight. Suspect lead, chromium, and cadmium paint samples conducting lead paint activities (40 CFR 745.227). Currently, proposed renovation and demolition activities that could potentially disturb lead, chromium, and cadmium containing paint are subject to the OSHA regulations (29 CFR 1926.62 Lead, 29 CFR

1926.1126 Chromium, and 29 CFR 1926.1127 Cadmium).

The paint sampling began with the Terracon representative walking the structure, observing painted surfaces, and selecting sample locations. After the sampling strategy was determined, Terracon collected six (6) paint chip samples from homogeneous surfaces.

Paint chip samples were submitted under a chain of custody to EMSL Analytical (EMSL) in Cinnaminson, New Jersey. Paint chip samples were analyzed by Inductively Coupled Plasma method SW846 6010D. EMSL is an American Industrial Hygiene Association (AIHA) Environmental Lead Laboratory Accreditation (ELLAP) accredited laboratory (ELLAP Lab Code 100194), to perform Flame Atomic Absorption Spectrophotometry and ICP analysis. A summary of the paint chip samples collected during the sampling is presented in Table 2 in Appendix A. The lead, chromium, and cadmium paint laboratory analytical report is provided in Appendix B.

3.3 Polychlorinated Biphenyls (PCBS) in Caulk/Sealants

The PCBs in caulk/sealant sampling was conducted by Terracon representative, Chris Hahn. One (1) sample of caulk/sealant associated with interior and exterior components of the structure was collected by removing the caulk/sealant with decontaminated hand representative. The samples were placed into non-preserved laboratory certified clean glass jars and packed on ice.

One (1) sample was submitted under chain of custody to EMSL Analytical (EMSL) in Cinnaminson, New Jersey for analysis. Suspect caulk/sealant samples were analyzed by Method EPA 8082A for PCB concentrations. EMSL is an accredited laboratory for solid waste analysis by the Commonwealth of Virginia (VELAP Certificate No. 12613).

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3.4 Limited Visual Assessment for Hazardous Materials

Terracon conducted a limited visual inspection for hazardous materials consisting of PCBs in light ballasts/electrical transformers, mercury bulbs/light tubes, and mercury-containing devices. Materials were not sampled as part of this service. A summary of findings regarding this service is included in Section 5.5.

4.0 Regulatory Overview

4.1 Asbestos

The following sections provide a general overview to the applicable asbestos regulations.

Please refer to the complete current regulation in order to verify compliance before any actions are initiated on an ACM.

NESHAP

The asbestos NESHAP (40 CFR Part 61, Subpart M) regulates asbestos fiber emissions and asbestos waste disposal practices. It also requires the identification and classification of existing building materials prior to demolition or renovation activities.

Under NESHAP, asbestos-containing building materials are classified as either friable, Category I non-friable or Category II non-friable ACM. Friable materials are those that, when dry, may be crumbled, pulverized or reduced to powder by hand pressure.

Category I non-friable ACM includes packings, gaskets, resilient floor coverings and asphalt roofing products containing more than 1% asbestos. Category II non-friable ACM are any materials other than Category I materials that contain more than 1% asbestos.

Friable ACM, Category I and Category II non-friable ACM which is in poor condition and has become friable or which will be subjected to drilling, sanding, grinding, cutting or abrading and which could be crushed or pulverized during anticipated renovation or demolition activities are considered regulated ACM (RACM).

Commonwealth of Virginia Regulations

In the State of Virginia, asbestos activities are regulated by the Virginia Department of Labor and Industry (DOLI). DOLI regulates asbestos through enforcement of the Virginia Occupational Safety and Health (VOSH) regulations, enforcement of the U.S. EPA Asbestos NESHAP, and enforcement of the Asbestos Notification regulations found in the labor laws of Virginia. DOLI requires written notification by licensed asbestos abatement contractors for any asbestos abatement project at least 10 linear feet or 10 square feet.

A notification is not required for nonfriable asbestos containing roofing, flooring, or siding materials that will not become friable during removal. Notifications must be

May 22, 2024 Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials 6 submitted 20 calendar days prior to starting the asbestos project. The EPA must also be notified for any asbestos projects that are at least 150 square feet, or 250 linear feet and essentially all demolition projects. The EPA notification period is 10 working days prior to starting the asbestos project. The VA DOLI asbestos regulations can be found at http://www.doli.virginia.gov.

Asbestos abatement must be conducted under the direct supervision of a Virginia accredited supervisor, except that permitted removals of roofing products may be conducted under the direct supervision of a Virginia accredited roofing supervisor. An asbestos abatement design must be prepared by a Virginia accredited abatement designer for each individually permitted removal of more than 3000 square feet (281 square meters), 1500 linear feet (462 meters) or 656 cubic feet (18 cubic meters), of regulated asbestos containing materials conducted in public areas. Third-party air monitoring must be conducted during the abatement activities in accordance with Asbestos Hazard Management Plan (AHMP) requirements.

OSHA

exercise due diligence in complying with the requirements to inform their employees and affected contractors working in the facility about the presence and location of both ACM and materials assumed to contain asbestos.

The OSHA Asbestos standard for construction (29 CFR 1926.1101) regulates workplace exposure to asbestos during construction and maintenance activities. The standard classifies construction and maintenance activities which could disturb ACM, and specifies work practices and precautions which employers must follow when engaging in each class of regulated work. States which administer their own federally-approved state OSHA programs may require additional precautions.

A full copy of the OSHA asbestos standard for general and construction industry may be www.osha.gov) and should be referenced for specific information.

4.2 Lead, Chromium, and Cadmium in Paint

The metals in paint sampling activities were conducted in general accordance with the and local regulations) to meet informational needs to comply with the OSHA Lead in Construction Standard. Lead, chromium, and cadmium are regulated by the Environmental Protection Agency (EPA) and the Occupational Safety and Health Administration (OSHA).

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The Resource Conservation and Recovery Act (RCRA) gave the USEPA authority to regulate the waste status of demolition or renovation debris, including lead, chromium and cadmium-containing materials. Specific notification and testing requirements must be addressed prior to transporting, treating, storing, or disposing of hazardous wastes.

Lead, chromium, and cadmium-containing wastes are considered hazardous waste under RCRA if Toxicity Characteristic Leaching Procedure (TCLP) results exceed 5 milligrams per liter (mg/L) for lead and chromium, and 1.0 mg/L for cadmium. EPA exempts from most RCRA requirements those generators whose combined hazardous waste generation is less than 100 kilograms (kg) per month.

Detectable lead, chromium, and cadmium quantities may constitute a dust hazard during renovation and demolition activities. Personnel performing renovation and demolition activities that may disturb painted components with concentrations of lead, chromium, and cadmium above the designated analytical detection limit should comply with all current OSHA regulations in order to minimize employee exposure. OSHA defines lead-containing paint as a paint, which contains lead, regardless of the concentration.

Currently, any proposed renovation and demolition is subject to the OSHA regulations 29 CFR 1926.62 (Lead), 29 CFR 1926.1126 (Chromium), and 29 CFR 1926.1127 (Cadmium). The OSHA regulation defines specific training requirements, engineering controls, and working practices for construction personnel subject to this standard.

Occupational exposure to lead occurring in the course of construction work, including maintenance activities, painting, alteration and repairs is subject to the OSHA Lead Exposure in Construction standard.

Construction work covered by 29 CFR 1926.62 includes any repair or renovation activities or other activities that disturb in-place lead-containing materials, but does not include routine cleaning and repainting where there is insignificant damage, wear, or corrosion of existing lead-containing coatings or substrates. Employers must assure that no employee will be exposed to lead at concentrations greater than 50 micrograms per cubic meter ( g/m3) averaged over an eight-hour period without adequate protection.

The OSHA Standard also establishes an action level of 30 g/m3 which if exceeded triggers the requirement for medical monitoring.

The above overview is not intended to be inclusive of all potentially pertinent regulatory information. The relevant EPA and OSHA standards should be consulted prior to undertaking activities involving the demolition, renovation, or maintenance of surfaces coated with lead-based paints.

4.3 PCBs

Current PCB regulations can be found in the Code of Federal Regulations (CFR) at 40 CRF 761, the Toxic Substances Control Act (TSCA). Commonwealth of Virginia regulations pertaining to PCB wastes can be found in the Virginia Administrative Code

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(VAC) 9VAC20-81-630. Under TSCA, PCB-containing caulk is considered PCB bulk mg/Kg mg/Kg must be disposed of as PCB bulk product waste according to 40 CFR 761.62.

PCB bulk product waste includes waste derived from manufactured products containing PCBs in a non-liquid state where the concentration at the time of designation for disposal is 50 ppm PCBs (see 40 CFR 761.3 and 761.62). Caulk with PCB concentrations 50 ppm is not authorized for use and must be disposed of as PCB bulk product waste according to 40 CFR 761.62. Additionally, the definition of PCB bulk product waste includes building materials that have been coated or serviced with PCBs.

That is masonry, wood, metals, and other building materials that are purposely coated with PCB-containing caulk are regulated as PCB bulk product waste if the caulk coating the building materials contains PCBs at concentrations 50 ppm.

4.4 Hazardous Materials

Materials such as heavy metals (e.g., mercury and lead), PCBs, and various other chemicals/hazardous substances may be found at commercial and industrial facilities.

These materials may be located in containers or be contained in various building materials, fixtures, or equipment. These materials, if improperly managed, may be considered environmental hazards and, therefore, require special handling and disposal considerations prior to, or in conjunction with, renovation or demolition efforts to prevent their entry into the environment. Hazardous materials are regulated under different federal and state statutes including the Toxic Substances Control Act (TSCA) and RCRA.

5.0 Findings and Recommendations

5.1 Asbestos

Asbestos was not detected at concentrations above the laboratory method detection limit in any of the samples collected and submitted for analysis.

Sample descriptions, locations, analytical results, and classification are summarized in Table 1 in Appendix A. Copies of the asbestos laboratory analytical reports are included in Appendix B.

It must be noted that some areas behind solid walls and floors were inaccessible and could not be visually inspected for the presence of ACM. Terracon attempted to visually inspect wall cavities and pipe chases from above suspended ceiling systems where

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Facilities | Environmental | Geotechnical | Materials 9 appropriate. ACM including, but not limited to, thermal pipe and pipe fitting insulation may exist in these locations.

Additionally, suspect ACM, including the following materials (if encountered during demolition) should be considered asbestos containing until sampling determines otherwise: fire door insulation, vermiculite insulation within concrete block walls, pipe flanges and gaskets, and vapor barrier behind the façade. Evaluation of the structure for the presence of these materials will require further exploratory demolition and/or additional sampling by a Commonwealth of Virginia licensed asbestos inspector prior to renovation or demolition. Federal, state, and local regulations should be consulted before initiating any action on an ACM.

5.2 Lead, Chromium, and Cadmium-Containing Paint

Lead was not detected above the laboratory reporting limits in any of the paint samples collected and submitted for analysis.

method detection limit in five (5) of the submitted paint samples: L-2, L-3, L-4, L-5, and L-6. three (3) of the submitted paint samples: L-3, L-4, and L-5. The results are summarized in Table 2 in Appendix A.

Contractors should be made aware of the presence of the identified chromium, and cadmium coatings, so that they may maintain compliance with worker protection regulations, employ lead-safe work practices, and/or conduct a negative exposure assessment per OSHA regulations 29 CFR 1926.62 (Lead in Construction), 29 CFR

1926.1126 (Chromium), and 29 CFR 1926.1127 (Cadmium).

OSHA does not consider methods that rely solely on the analysis of bulk materials or surface content of lead (or other toxic material) to be acceptable for safely predicting employee exposure to airborne contaminants. Without air monitoring results or without the benefit of historical or objective data (including air sampling which clearly demonstrates that the employee cannot be exposed above the action level during any process, operation, or activity) the analysis of bulk or surface samples cannot be used to determine employee airborne exposure.

Terracon recommends a project specification be written to address work practices, clean-up, and specific disposal requirements to satisfy EPA, Virginia, and OSHA regulations; this document can be prepared by Terracon for inclusion in the bidding specifications. Terracon also recommends a Toxicity Characteristic Leaching Procedure (TCLP) of representative debris for specific areas of construction/renovation. The specific scope of construction was not specified at the issuance of this report, and as such a TCLP analysis was not executed.

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5.3 PCBs

The submitted sample was not reported to contain PCB congeners method detection limit. The results are further summarized in Table 3 in Appendix A.

5.4 Limited Visual Inspection for Mercury & PCB-Containing

Equipment/Components

PCBs in Light Ballasts

Light ballasts are the electrical components attached to fluorescent light fixtures usually found under a metal over-plate. Prior to 1978, ballasts were commonly manufactured with polychlorinated biphenyls (PCBs). PCBs were used in fluorescent light ballasts because of their good electrical insulating capabilities. Ballasts made after 1978 are usually marked "Non-PCB." Certain sealants have been found to contain PCBs.

Terracon observed a representative number of fluorescent light ballasts throughout the building. The observed fluorescent light ballasts were predominantly not labeled as non- PCBs containing. Terracon estimates that the building contains approximately 200 fluorescent light ballasts that may contain PCBs.

Terracon recommends that any fluorescent light ballasts that may be found within the

- label are not regulated and can be disposed of with general construction and demolition debris. Should fluorescent light ballasts without the

- , and/or recycled according to Federal and Commonwealth of Virginia waste disposal guidelines by an appropriately licensed contractor.

Mercury

Mercury is used in several building components including fluorescent lamps, thermostats, and thermometers. Terracon conducted a visual inspection to identify mercury-containing components throughout the building.

During this inspection, Terracon personnel observed approximately 400 fluorescent lamps throughout the building. Terracon did not observe thermostats or thermometers suspected to contain mercury.

Terracon recommends that all fluorescent bulbs within the building be presumed to be mercury-containing. The mercury-containing building components that are to be impacted as part of renovation and demolition activities should be removed, disposed of, May 22, 2024 Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials 11 and/or recycled according to Federal and Commonwealth of Virginia hazardous waste disposal guidelines by an appropriately licensed contractor.

Other Hazardous and Regulated Materials

Terracon observed small quantities (<5.0 gallon containers) of oils and lubricants as well as small quantities of solvent cleaners in the Hangar area within the building. These chemicals were observed locked in designated/labeled flammables storage closets and/or stored responsibly in an upright position with no observed evidence of leakage or spillage on or around them.

6.0 General Comments

This hazardous materials inspection was conducted in a manner consistent with the level of care and skill ordinarily exercised by members of the profession currently practicing under similar conditions in the same locale. The results, findings, conclusions and recommendations expressed in this report are based on conditions observed during our survey of the building. The information contained in this report is relevant to the date on which this survey was performed and should not be relied upon to represent conditions at a later date.

This report has been prepared on behalf of and exclusively for use by Clark Nexsen for specific application to their project, as discussed herein. Terracon does not warrant the work of regulatory agencies, laboratories or other third parties supplying information, which may have been used in the preparation of this report. No warranty, express or implied is made.

This report is not a bidding document. Contractors or consultants reviewing this report must draw their own conclusions regarding further investigation or remediation deemed necessary.

APPENDIX A

TABLES

S a m p le

N u m b e r

P h o to

ID

o

A n a ly ti ca l R e su lt s

S a m p le

L o ca ti o n S a m p le

D e sc ri p ti o n

H o m o g e n e o u s A re a

C la ss if ic a ti o n

F ri a b le

N o n

-F ri a b le C u rr e n t C o n d it io n

B -1

N A D

B -2

N A D

B -3

N A D

B -4

N A D

B -5

N A D

B -6

N A D

B -7

N A D

B -8

N A D

B -9

N A D

B -1

N

A D

B -1

N

A D

B -1

N

A D

B -1

N

A D

B -1

N

A D

B -1

N

A D

B -1

N

A D

B -1

N

A D

B -1

N

A D

1 1 2

N /A 1 1

R oo f C or e

N or th L o w

R oo f

G oo d

B la ck R oo f E d g e

M as ti c

M is ce lla n eo u s

N on

-F ri a b le

G o od

N or th L o w

R oo f

M is ce lla n eo u s

N on

-F ri a b le

G o od

N or th L o w

R oo f

N on

-F ri ab le

T A

B L

E

A

B

E S

T O

S R

E S

U L

T S

S A

M P

L E

S U

M M

A R

Y

H A

N G

A R

L P

-4

N O

R F

O L

K N

A V

A L

S T

A T

IO

N

N O

R F

O L

K

V

IR

G

IN

IA

T

E R

R A

C O

N P

R O

J E

C T

N O

. K

G ra y G ro u n d in g W ir e P la te

Fa st en e r

S ea la n t

M is ce lla n eo u s

N or th F ac e of R oo f

N or th F ac e of R oo f

B e ig e M e ta l R oo f S u p p or t S e al a n t

M is ce lla n eo u s

N on

-F ri ab le

N or th F ac e of R oo f

C re a m

R oo f S ea la n t

M is ce lla n e ou s N o n -F ri ab le G oo d

N on

-F ri ab le

G oo d

S ilv er P ar ap et F la sh in g e al a n t

G oo d

M is ce lla n eo u s

P ag e o f m m b e r

P h o

A n a ly ti ca l R e su lt s

S a m p le

L o ca ti o n S a m p le

D e sc ri p ti o n

H o m o g e n e o u s A re a

C la ss if ic a ti o n

F ri a b le

N o n

-F ri a b le C u rr e n t C o n d it io n

T A

B L

B

E S

T O

S R

E S

U L

T S

S A

M P

L E

S U

M M

A R

Y

H A

N G

A R

L P

-4

N O

R F

O L

K N

A V

A L

S T

A T

IO

N

N O

R F

O L

K

V

IR

G

IN

IA

T

E R

R A

C O

N P

R O

J E

C T

N O

. K

B -1

A

N A D

B -1

B

N A D

B -2

A

N A D

B -2

B

N A D

B -2

A

N A D

B -2

B

N A D

B -2

A

N A D

B -2

B

N A D

B -2

A

N A D

B -2

B

N A D

B -2

A

N A D

B -2

B

N A D

B -2

N

A D

B -2

N

A D

B -2

N

A D

B -2

N

A D

B -2

N

A D

B -3

N

A D

B -3

A

N A D

B -3

B

N A D

B -3

A

N A D

B -3

B

N A D

B -3

A

N A D

B -3

B

N A D

N /A

N /A

N /A

N /A n d F lo or

H al lw ay

W al l n d F lo or

H al lw ay

W al l

O n S te el

B ea m s in H a n g ar

(f ro m

M ez za n in e)

B la ck

V in yl B a se

Y el lo w

M a st ic

B

M is ce lla n eo u s

N on

-F ri ab le

G oo d

G oo d n d F lo or

C ei lin g

W h it e x

A co u st ic

C ei lin g T ile

M is ce lla n eo u s

G oo d

G oo d

N on

-F ri ab le

W h it e

D ry w a ll

(A

W h it e

Jo in t C o m p o u n d

B

M is ce lla n eo u s

N on

-F ri ab le n d F lo or

T op o f S ta ri ca se B lu e

V in yl F lo or

T ile

B ig e G lu e

M a st ic

B

M is ce lla n eo u s

N on

-F ri a b le

G o od

G ra y S p ra y on

F ir ep ro o fi n g

M is ce lla n eo u s

Fr ia b le

P ag e o m m b e r

P h o

A n a ly ti ca l R e su lt s

S a m p le

L o ca ti o n S a m p le

D e sc ri p ti o n

H o m o g e n e o u s A re a

C la ss if ic a ti o n

F ri a b le

N o n

-F ri a b le C u rr e n t C o n d it io n

T A

B L

B

E S

T O

S R

E S

U L

T S

S A

M P

L E

S U

M M

A R

Y

H A

N G

A R

L P

-4

N O

R F

O L

K N

A V

A L

S T

A T

IO

N

N O

R F

O L

K

V

IR

G

IN

IA

T

E R

R A

C O

N P

R O

J E

C T

N O

. K

B -3

A

N A D

B -3

B

N A D

B -3

A

N A D

B -3

B

N A D

B -3

A

N A D

B -3

B

N A D

B -3

A

N A D

B -3

B

N A D

B -3

A

N A D

B -3

B

N A D

B -3

A

N A D

B -3

B

N A D

B -4

A

N A D

B -4

B

N A D

B -4

C

N A D

B -4

D

N A D

B -4

A

N A D

B -4

B

N A D

B -4

C

N A D

B -4

D

N A D

B -4

A

N A D

B -4

B

N A D

B -4

C

N A D

B -4

D

N A D

N /A

N /A

N /A

M is ce lla n eo u s

N on

-F ri a b le

G o od n d F lo or

T op o f S ta ir ca se W h it e

V in yl F lo or

T ile ig e G lu e

M a st ic

B st

F lo or B ot to m o f S ta ir ca se B la ck

V in yl F lo or

T ile

C ar M as ti c

(B

M is ce lla n eo u s

N on

-F ri a b le

G o od st

F lo o r

E n tr an ce

R o om

G ra y C e ra m ic

B as e

G ra y C e ra m ic

F lo or T ile y G ro u t

(C

W h it e

T h in se t

(D

M is ce lla n eo u s

N on

-F ri a b le

G o od

P ag e o m m b e r

P h o

A n a ly ti ca l R e su lt s

S a m p le

L o ca ti o n S a m p le

D e sc ri p ti o n

H o m o g e n e o u s A re a

C la ss if ic a ti o n

F ri a b le

N o n

-F ri a b le C u rr e n t C o n d it io n

T A

B L

B

E S

T O

S R

E S

U L

T S

S A

M P

L E

S U

M M

A R

Y

H A

N G

A R

L P

-4

N O

R F

O L

K N

A V

A L

S T

A T

IO

N

N O

R F

O L

K

V

IR

G

IN

IA

T

E R

R A

C O

N P

R O

J E

C T

N O

. K

B -4

A

N A D

B -4

B

N A D

B -4

A

N A D

B -4

B

N A D

B -4

A

N A D

B -4

B

N A D

B -4

N

A D

B -4

N

A D

B -4

N

A D

B -4

A

N A D

B -4

B

N A D

B -4

C

N A D

B -5

A

N A D

B -5

B

N A D

B -5

C

N A D

B -5

A

N A D

B -5

B

N A D

B -5

C

N A D

B -5

N

A D

B -5

N

A D

B -5

N

A D

N ot es

N /A

N /A

N /A 1

N or th ea st E xt e ri o r o n C h ill e r

S ys te m

N A D

N o A sb es to s D et ec te d

Id e n ti fi ed a sb e st os -c o n ta in in g m at er ia ls a re h ig h lig h te d a n d b ol d e d ig e C h ill e r

P ip e W ra p

M is ce lla n e ou s N o n -F ri ab le G oo d st

F lo or H a llw a y

W al l B lu e

V in yl B as e

Y el lo w

M a st ic

B

M is ce lla n eo u s

N on

-F ri a b le

G o od st

F lo or H a llw a y on C em en t Fl oo r

M is ce lla n eo u s

N on

-F ri a b le

G o od st

F lo o r

M en

's R es tr oo m

B lu e a n d W h it e

Pa tt er n ed

Fl oo r

T ile y T h in se t

(B y G ro u t

(C

B lu e E p ox y C oa t

M is ce lla n eo u s

N on

-F ri ab le

G oo d

P ag e o

Sample ID No.

Photo ID No.

Area Substrate Component Color Cadmium

Concentration (mg/Kg)

Chromium Concentration

(mg/Kg)

Lead Concentration

(% weight)

L-1 1 Cantilever Roof Pipe Support Concrete Roof Cream ND ND <0.008

L-2 N/A Wall in 2nd Floor East Hallway Drywall Wall Cream ND 18 <0.007

L-3 N/A Wall in 1st Floor Hallway Drywall Wall Blue 64 15 <0.011

L-4 N/A Wall in 2nd Floor Hallway Drywall Wall White 1.9 2.5 <0.022

L-5 N/A Southwest Hangar Floor Concrete Floor Red 25 190 <0.008

L-6 N/A North Exterior Storage Container Metal Container White ND 39 <0.011

Notes:

1) Values indicative of Lead-Based Paint are indicated in bold type

2) mg/Kg = Milligram per Killogram or parts per million

TABLE 2

CHROMIUM, CADMIUM AND LEAD IN PAINT SAMPLE SUMMARY

HANGAR LP-48 NORFOLK NAVAL STATION

PORTSMOUTH, VIRGINIA

TERRACON PROJECT NO. K3237044

Sample ID No.

Photo ID No.

Sample Location Sample Description Aroclor-1016

(mg/Kg) Aroclor-1221

(mg/Kg) Aroclor-1232

(mg/Kg) Aroclor-1242

(mg/Kg) Aroclor-1248

(mg/Kg) Aroclor-1254

(mg/Kg) Aroclor-1260

(mg/Kg) Aroclor-1062

(mg/Kg) Aroclor-1268

(mg/Kg)

PCB-1 2

North Face of Upper Roof on

Support Beige Metal Roof Support Sealant ND ND ND ND ND ND ND ND ND

Notes:

1) Samples with detectable levels of PCB analytes are bolded

TABLE 3

PCB SAMPLE SUMMARY

HANGAR LP-48 NORFOLK NAVAL STATION

NORFOLK, VIRGINIA

TERRACON PROJECT NO. K3237099

December 7, 2023 Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials 13

APPENDIX B

LABORATORY REPORTS

Fax: (757) 518-1704 Phone: (757) 518-1703

11/28/2023Attn: Chris Hahn GET Solutions Inc., A Terracon Company 5465 Greenwich Rd Virginia Beach, VA 23462

2845.25

The samples associated with this report were received in good condition unless otherwise noted. This report relates only to those items tested as received by the laboratory. This report may not be reproducted except in full and without written approval by EMSL Analytical, Inc. A2LA accredited chemical testing laboratory for Metals in Solids and Liquids by Inductively Coupled Plasma (ICP), as well as Mercury by Cold Vapor Atomic Absorption (CVAA).

Aleksandrea Kuchenbrod, Inorganic Chemistry Lab Manager

Approved By:

The following analytical report covers the analysis performed on samples submitted to EMSL Analytical, Inc. on 11/27/2023. The results are tabulated on the attached data pages for the following client designated project:

LP-48/K3237099

The reference number for these samples is EMSL Order #162327669. Please use this reference when calling about these samples. If you have any questions, please do not hesitate to contact me at (317) 803-2997.

Chemical Testing

EMSL Analytical, Inc.

6340 CastlePlace Dr., Indianapolis, IN 46250

Phone: (317) 803-2997 Fax: (317) 803-3047 Email: indianapolislab@emsl.com

EMSL Analytical, Inc.

6340 CastlePlace Dr., Indianapolis, IN 46250

Phone/Fax: (317) 803-2997 / (317) 803-3047 http://www.EMSL.com indianapolislab@emsl.com

162327669

CustomerID: GETS42

CustomerPO: K3237099

ProjectID:

EMSL Order:

Analytical Results

Attn: Chris Hahn GET Solutions Inc., A Terracon Company 5465 Greenwich Rd Virginia Beach, VA 23462

Received: 11/27/2023 10:00 AM

LP-48/K3237099

Fax: (757) 518-1704

Phone: (757) 518-1703

Project:

11/15/2023Collected:

Client Sample Description Lab ID:L-1 162327669-0001

CANTLEVER ROOF PIPE SUPPORT-CREAM

Collected: 11/15/2023

Method Parameter Result UnitsRL Prep

Date & Analyst Analysis

Date & Analyst

METALS

3050B/6010D Cadmium JWND ppm 11/28/20230.43 11/28/2023 JW

3050B/6010D Chromium JWND ppm 11/28/20231.1 11/28/2023 JW

Client Sample Description Lab ID:L-2 162327669-0002

2ND FLOOR HALL WALL-CREAM-EAST

Collected: 11/15/2023

Method Parameter Result UnitsRL Prep

Date & Analyst Analysis

Date & Analyst

METALS

3050B/6010D Cadmium JWND ppm 11/28/20232.6 11/28/2023 JW

3050B/6010D Chromium JW18 ppm 11/28/20236.5 11/28/2023 JW

Client Sample Description Lab ID:L-3 162327669-0003

1ST FLOOR HALL WALL-BLUE

Collected: 11/15/2023

Method Parameter Result UnitsRL Prep

Date & Analyst Analysis

Date & Analyst

METALS

3050B/6010D Cadmium JW64 ppm 11/28/20230.40 11/28/2023 JW

3050B/6010D Chromium JW15 ppm 11/28/20230.99 11/28/2023 JW

Client Sample Description Lab ID:L-4 162327669-0004

1ST FLOOR HALL WALL-WHITE-CMU

Collected: 11/15/2023

Method Parameter Result UnitsRL Prep

Date & Analyst Analysis

Date & Analyst

METALS

3050B/6010D Cadmium JW1.9 ppm 11/28/20230.97 11/28/2023 JW

3050B/6010D Chromium JW2.5 ppm 11/28/20232.4 11/28/2023 JW

Client Sample Description Lab ID:L-5 162327669-0005

SOUTHWEST HANGER FLOOR-RED

Collected: 11/15/2023

Method Parameter Result UnitsRL Prep

Date & Analyst Analysis

Date & Analyst

METALS

3050B/6010D Cadmium JW25 ppm 11/28/20230.78 11/28/2023 JW

3050B/6010D Chromium JW190 ppm 11/28/20231.9 11/28/2023 JW

Page 2 of 3ChemSmplw/RDL/NELAC-2.19.0.0 Printed: 11/28/2023 7:51:08 PM

EMSL Analytical, Inc.

6340 CastlePlace Dr., Indianapolis, IN 46250

Phone/Fax: (317) 803-2997 / (317) 803-3047 http://www.EMSL.com indianapolislab@emsl.com

162327669

CustomerID: GETS42

CustomerPO: K3237099

ProjectID:

EMSL Order:

Analytical Results

Attn: Chris Hahn GET Solutions Inc., A Terracon Company 5465 Greenwich Rd Virginia Beach, VA 23462

Received: 11/27/2023 10:00 AM

LP-48/K3237099

Fax: (757) 518-1704

Phone: (757) 518-1703

Project:

11/15/2023Collected:

Client Sample Description Lab ID:L-6 162327669-0006

EXTERIOR N. STORAGE CONTAINER-WHITE

Collected: 11/15/2023

Method Parameter Result UnitsRL Prep

Date & Analyst Analysis

Date & Analyst

METALS

3050B/6010D Cadmium JWND ppm 11/28/20230.39 11/28/2023 JW

3050B/6010D Chromium JW39 ppm 11/28/20230.99 11/28/2023 JW

MDL - method detection limit J - Result was below the reporting limit, but at or above the MDL ND - indicates that the analyte was not detected at the reporting limit RL - Reporting Limit (Analytical) D - Dilution Sample required a dilution which was used to calculate final results

Definitions:

Page 3 of 3ChemSmplw/RDL/NELAC-2.19.0.0 Printed: 11/28/2023 7:51:08 PM

December 7, 2023 Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials 14

APPENDIX C

INSPECTOR S CREDENTIAL

December 7, 2023 Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials 15

APPENDIX D

SAMPLE LOCATION DRAWINGS

54'-4 1/2" 2'-9 1/2" 25'-7 1/8" 19'-2 3/8" 19'-2 3/8" 12'-9 1/2" 4'-11" 1'-3 7/8"

140'-2 1/4"

1'-4 5/8" 38'-5 1/4"

UNCLASSIFIED

55'-10 1/4"

CLCLCLCLCL

10'-0" 7'-0" 13'-0" 10'-0" 6'-9 5/8"

4'-10 7/8"

26'-5 3/8"28'-0 1/4"1'-4 5/8"

55'-8 1/4" 2"28'-6 1/4" 84'-4"

AREA PLANS

B

-1

54'-4 1/2" 2'-9 1/2" 25'-7 1/8" 19'-2 3/8" 19'-2 3/8" 12'-9 1/2" 4'-11" 1'-3 7/8"

140'-2 1/4"

1'-4 5/8" 38'-5 1/4"

OVERALL FIRST FLOOR PLAN

55'-10 1/4"

CLCLCLCLCL

10'-0" 7'-0" 13'-0" 10'-0" 6'-9 5/8"

4'-10 7/8"

26'-5 3/8"28'-0 1/4"1'-4 5/8"

55'-8 1/4" 2"28'-6 1/4" 84'-4"

L

P C

December 7, 2023 Terracon Project No. K3237099

Facilities | Environmental | Geotechnical | Materials 16

APPENDIX E

SITE PHOTOGRAPHS

Asbestos Inspection Report Norfolk Naval Station Hangar LP-48 Norfolk, Virginia Photographs Taken: November 15, 2023 Terracon Project No. K3237099

E-1

Photo #1 Main Roof System of Hangar LP-48 Photo #2 Upper Roof System of Hangar LP-48

Photo #3 Lower N Roof System of Hangar LP-48 Photo #4 Piping and Fireproofing above drop ceiling in office area

Photo #5 Piping and fireproofing in hangar area Photo #6 Piping and fireproofing in hangar area

Asbestos Inspection Report Norfolk Naval Station Hangar LP-48 Norfolk, Virginia Photographs Taken: November 15, 2023 Terracon Project No. K3237099

E-2

Photo #7 Fire Pump System in hangar Photo #8 Exterior finishes on north façade of LP-48

Photo #9 Transformers and exterior finishes Photo #10 Chiller on N Exterior of LP-48 on north side of LP-48

Photo #11 Chiller on N Exterior of LP-48 Photo #12 Pipe Insulation from damaged Chiller System Piping