JUNE 25, Copyright 2018 Kleinfelder All Rights Reserved

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1 REPORT OF LIMITED HAZARDOUS BUILDING MATERIALS SURVEY VAL BASE SAN DIEGO BUILDINGS 3232 AND 3292 RENOVATION PROJECT PHASE 3 BUILDING st FLOOR AND BUILDING st FLOOR SAN DIEGO, CALIFORNIA KLEINFELDER PROJECT NO A JUNE 25, 2018 Copyright 2018 Kleinfelder All Rights Reserved ONLY THE CLIENT OR ITS DESIGTED REPRESENTATIVES MAY USE THIS DOCUMENT AND ONLY FOR THE SPECIFIC PROJECT FOR WHICH THIS REPORT WAS PREPARED A/SDI18R80327 Page i of iii June 25, 2018

2 A Report Prepared for: Ms. Joyce Chow, Leed AP Joseph Chow and Associates, Inc. 650 Delancey Street, Suite 211 San Francisco, California REPORT OF LIMITED HAZARDOUS BUILDING MATERIALS SURVEY VAL BASE SAN DIEGO BUILDINGS 3232 AND 3292 RENOVATION PROJECT PHASE 3 BUILDING ST FLOOR AND BUILDING ST FLOOR SAN DIEGO, CALIFORNIA Prepared by: Richard H. Stevenson Certified Asbestos Consultant No Lead Inspector/Assessor/Project Monitor No Reviewed By: Margaret R. Carroll Senior Professional KLEINFELDER 550 West C Street, Suite 1200 San Diego, California Phone: Fax: June 25, 2018 Kleinfelder Project No A A/SDI18R80327 Page ii of iii June 25, 2018

3 TABLE OF CONTENTS Section Page 1 EXECUTIVE SUMMARY INTRODUCTION AND BUILDING DESCRIPTIONS INTRODUCTION BUILDING DESCRIPTIONS PHYSICAL LIMITATIONS ASBESTOS-CONTAINING MATERIALS SURVEY ASBESTOS-CONTAINING MATERIALS SURVEY METHODS REGULATORY OVERVIEW FOR ASBESTOS Asbestos Hazard Emergency Response Act National Emission Standards for Hazardous Air Pollutants Asbestos Standard for the Construction Industry ASBESTOS-CONTAINING MATERIALS SURVEY RESULTS LEAD-CONTAINING MATERIALS SURVEY LEAD-CONTAINING MATERIALS SURVEY METHODS REGULATORY OVERVIEW FOR LEAD-BASED PAINTS LEAD-CONTAINING MATERIALS SURVEY RESULTS Lead-Based Paints Lead-Containing Paints OTHER HAZARDOUS BUILDING MATERIALS SURVEY OTHER HAZARDOUS BUILDING MATERIALS SURVEY METHODS REGULATORY OVERVIEW FOR OTHER HAZARDOUS MATERIALS PCBs Universal Waste OTHER HAZARDOUS BUILDING MATERIALS SURVEY RESULTS CONCLUSIONS AND RECOMMENDATIONS CONCLUSIONS RECOMMENDATIONS LIMITATIONS FIGURES 1 Sample Location Map, Building st Floor 2 Sample Location Map, Building st Floor TABLES 1 Summary of Asbestos Survey Results 2 Summary of Lead-Containing Materials Survey Results 3 Summary of Other Hazardous Materials Survey Results APPENDIX A XRF Field Measurement Documentation, Laboratory Analytical Reports, and Chain-of- Custody Documentation A/SDI18R80327 Page iii of iii June 25, 2018

4 1 EXECUTIVE SUMMARY This report presents results of the limited Hazardous Building Materials Survey (HBMS) performed by Kleinfelder at targeted areas of Naval Base San Diego (Site) Buildings 3232 and 3292 on June 6, The purpose of the limited HBMS was to evaluate the presence, location, and quantity of accessible suspected hazardous building materials that may represent a potential worker safety hazard if disturbed, and/or may require special handling and/or disposal as hazardous waste, as part of planned building renovation activities for Phase 3 of the Building 3232 and 3292 Renovation Project (Project) at the Site. Suspected hazardous building materials surveyed included asbestos-containing materials (ACMs), lead-containing materials (LCMs), and building equipment that may contain other hazardous materials, including polychlorinated biphenyls (PCBs), mercury or mercury vapor, chlorofluorocarbon (CFC)-containing refrigerants, or other potential hazardous materials. The following table presents a summary of findings from the limited HBMS. The findings are based on observations made during the HBMS and our review of laboratory analytical results of samples collected during the HBMS. Detailed discussions of HBMS survey methods and results are presented in Sections 3 through 5 of this report. Summary of HBMS Findings BUILDING ACM LBP LCP HBM Building 3232, 1 st Floor X Building 3292, 1 st Floor X X Notes: ACM = Asbestos-containing materials LBP = Lead-based paints LCP = Lead-containing paints HBM = Other hazardous building materials X = Denotes specified material was identified in building A/SDI18R80327 Page 1 of 17 June 25, 2018

5 2 INTRODUCTION AND BUILDING DESCRIPTIONS 2.1 INTRODUCTION This report presents results of the limited HBMS performed by Kleinfelder at targeted areas of Site Buildings 3232 and 3292 on June 6, The purpose of the limited HBMS was to evaluate the presence, location, and quantity of accessible suspected hazardous building materials that may represent a potential worker safety hazard if disturbed, and/or may require special handling and/or disposal as hazardous waste as part of planned building renovation activities for Phase 3 of the Project at the Site. Suspected hazardous building materials surveyed included ACMs, LCMs, and building equipment that may contain other hazardous materials, including PCBs, mercury or mercury vapor, CFC-containing refrigerants, or other potential hazardous materials. The HBMS was performed in accordance with Kleinfelder s proposal dated September 19, 2016 and subsequent discussions with the Client. 2.2 BUILDING DESCRIPTIONS The following provides descriptions of the targeted areas of the Site buildings included in the HBMS. Building 3232, 1 st Floor The targeted survey area, which encompasses approximately 7,650 square feet, included existing office and administrative spaces in Room S1-44, S1-54, storage area S1-54A, classroom space in Room S1-54B, office S1-51, and the janitor s closet adjacent to Room S1-44 (See Figure 1). Interior floors were finished with 2-foot by 2-foot carpet squares with the exception of the janitor s closet, which was finished with vinyl floor tile (VFT). Interior wall finishes consisted of drywall. Interior ceiling finishes consisted of suspended ceiling systems with 2-foot by 2-foot lay-in ceiling panels. Building 3292, 1st Floor The targeted survey area, which encompasses approximately 3,350 square feet, included the existing office spaces in Rooms 104 and 104A, laboratory space in Room 103, and the adjacent hallway (See Figure 2). Interior floors were finished with carpet, VFT, or raised floor panels. Interior wall finishes consisted of drywall or concrete masonry unit (CMU). Interior ceiling finishes consisted of suspended ceiling systems with 2-foot by 4-foot lay-in ceiling panels, 12-inch acoustic ceiling tiles adhered to the ceiling deck with brown mastic, or were open to the concrete ceiling deck A/SDI18R80327 Page 2 of 17 June 25, 2018

6 2.3 PHYSICAL LIMITATIONS Kleinfelder s survey included accessible areas of the interiors and/or exteriors of the targeted areas of the Site buildings. The survey is considered limited because only the targeted areas of proposed renovation in the Site buildings were included in the scope of the HBMS. The survey is also considered limited because destructive sampling techniques were not used during the surveys. Based on these limitations, there is a possibility that additional ACMs, LCMs, or other hazardous materials may be encountered during building renovation activities in areas inaccessible to Kleinfelder at the time of the surveys (for example, between interstitial walls and ceiling spaces, or in underground utility conduits and pipes). If suspect hazardous materials are encountered during hazardous material abatement or renovation activities, they should be assumed to be hazardous until results of an appropriate assessment of the material indicate whether special handling and/or disposal are necessary A/SDI18R80327 Page 3 of 17 June 25, 2018

7 3 ASBESTOS-CONTAINING MATERIALS SURVEY 3.1 ASBESTOS-CONTAINING MATERIALS SURVEY METHODS Kleinfelder personnel performed visual surveys of the targeted areas of the Site buildings and collected representative bulk samples of building materials suspected to contain asbestos. Mr. Richard Stevenson, a California Division of Occupational Safety and Health (DOSH, also known as Cal/OSHA) Certified Asbestos Consultant (CAC, Number [No.] ) performed the survey. The survey was completed consistent with Asbestos Hazard Emergency Response Act (AHERA) methods (40 Code of Federal Regulations [CFR] Part 763) and San Diego County Air Pollution Control District (SDCAPCD) requirements as guidelines. In accordance with the Contract Scope of Work, destructive inspection and sampling methods were not used for the survey. Areas of homogeneous suspect ACM were identified by the visual inspection of building materials. Bulk samples of suspect ACM were collected using hand tools, such as utility knives, chisels, or putty knives, or using a T-handled manual corer with 3-inch brass core tubes. Up to approximately 2 square inches of material were collected for each sample, which was then placed in either 2-ounce or 4-ounce plastic Whirl-Pak sample bags and labeled with a unique sample identification number directly on the sample bag. Sampling tools were cleaned with soap and water following collection of each sample. Kleinfelder collected a total of 33 representative building material samples during the asbestos survey at the Site buildings. Bulk samples collected during the survey were delivered by Kleinfelder under chain-of-custody protocol to EMSL Analytical, Inc. (EMSL) in San Diego, California for analysis of asbestos content by polarized light microscopy (PLM). EMSL is a United States Environmental Protection Agency (US EPA) and California State-certified laboratory and National Voluntary Laboratory Accreditation Program (NVLAP) participant. PLM analysis has a limit of quantification (LOQ) of 1 percent (%) asbestos. PLM results reported as less than (<) 1% denote the presence of asbestos below the PLM LOQ. Point count analysis is necessary to confirm asbestos content is less than 1%. Bulk samples reported to contain less than 1% asbestos by PLM analysis were further analyzed by 1,000 point count analysis (US EPA Method 600/R-93/116). Summaries of building material samples collected, sample locations, asbestos content, condition, friability, and area estimates are presented in Table 1. Sample location maps, A/SDI18R80327 Page 4 of 17 June 25, 2018

8 indicating the approximate locations of building material samples collected are provided as Figures 1 and 2. Copies of the analytical laboratory reports and chain-of-custody documentation are included in Appendix A. 3.2 REGULATORY OVERVIEW FOR ASBESTOS Regulatory oversight for the management, removal, and disposal of ACMs is provided by a variety of Federal, State, and local agencies. The three primary regulations enforced by regulatory agencies that govern various activities (e.g., inspection, assessment, abatement, etc.) relating to ACMs include the following: AHERA, National Emission Standards for Hazardous Air Pollutants (NESHAP), and the Asbestos Construction Safety Standard (as codified in Federal Occupational Safety and Health Administration [OSHA] and Cal/OSHA regulations). US EPA regulations concerning the identification, handling, management, and abatement of ACMs (as defined in the AHERA and NESHAP) are implemented locally by SDCAPCD. Both Cal/OSHA and Federal OSHA regulate asbestos as a worker health and safety issue. In addition, the transportation and disposal of asbestos-containing wastes are overseen by the California Environmental Protection Agency s Department of Toxic Substances Control (DTSC). Federal OSHA, US EPA, DTSC, and SDCAPCD define ACM as material containing greater than 1% asbestos. The following is a brief description of the three major regulations relating to ACMs Asbestos Hazard Emergency Response Act AHERA (40 CFR Part 763), as implemented by the US EPA, primarily pertains to the assessment and management of ACMs in Kindergarten through Grade 12, non-profit schools. However, many of the procedures, training requirements, and certifications defined by AHERA have become the industry standard for most other facilities. For this survey, AHERA protocols were generally utilized in the identification, assessment, and sampling of building materials suspected of containing asbestos National Emission Standards for Hazardous Air Pollutants The asbestos NESHAP (40 CFR Part 61, Subpart M) is an asbestos standard that protects the general public from asbestos exposure due to renovation or demolition activities. NESHAP A/SDI18R80327 Page 5 of 17 June 25, 2018

9 requires surveying for suspect materials (as defined above), notifying of intent to renovate or demolish, removing Regulated Asbestos-Containing Material (RACM) prior to renovation or demolition, and properly managing asbestos-containing wastes. A RACM is defined by NESHAP as any of the following: Any friable ACM; A Category I non-friable ACM (such as floor tiles, mastics, and asphalt roofing products) that has become friable or will be subject to sanding, grinding, cutting, or abrading during renovation or demolition activities; and, A Category II non-friable ACM (all other non-friable ACMs) that has a high probability of becoming friable during demolition or renovation activities. NESHAP requires that demolition activities be conducted with no visible emissions using wet methods. Note that although NESHAP regulates renovation and demolition activities, it does not protect individual workers performing asbestos abatement or provide instructions for how asbestos abatement projects should be performed Asbestos Standard for the Construction Industry Federal OSHA, under its Asbestos Standard for the Construction Industry (29 CFR ), and Cal/OSHA, under California Code of Regulations (CCR) Title 8, Section 1529, regulate asbestos exposure in the work place. This includes persons working in a building containing ACM, as well as asbestos abatement workers/contractors. For abatement workers and contractors, the Asbestos Standard for Construction (i.e., the Construction Standard) regulates the following: Protection of workers and the public during removal of ACM; Medical surveillance requirements for workers; Detailed requirements for how ACMs are to be removed; and, Training requirements for abatement personnel. Furthermore, Cal/OSHA defines asbestos-containing construction material (ACCM) as any building material that contains more than 0.1% asbestos by weight. Building materials presumed A/SDI18R80327 Page 6 of 17 June 25, 2018

10 or known to contain at least trace amounts (less than 1%, but greater than 0.1% by weight) of asbestos should be considered ACCM and managed according to Cal/OSHA regulations (as presented in CCR Title 8, Section 1529). 3.3 ASBESTOS-CONTAINING MATERIALS SURVEY RESULTS Based on our observations and evaluation of the laboratory analytical reports, asbestos was not detected in the 21 bulk samples collected from the 1 st floor of Building Joint compound layers in two drywall wall system samples collected from the 1 st floor of Building 3232 (Samples KLF-24 and KLF-25) were reported by the laboratory to contain less than 1% asbestos. Both samples were further analyzed by 1,000 Point Count methods. Sample KLF-24 was reported to contain 0.1% chrysotile asbestos and sample KLF-25 was reported to contain less than 0.1% chrysotile asbestos. Therefore, the joint compound layers do not meet the definition of ACM (defined as materials containing greater than 1% asbestos) or ACCM (defined as materials containing less than 1%, but greater than 0.1% by weight). Asbestos was not detected in the remaining 10 samples collected from the 1 st floor of Building A/SDI18R80327 Page 7 of 17 June 25, 2018

11 4 LEAD-CONTAINING MATERIALS SURVEY 4.1 LEAD-CONTAINING MATERIALS SURVEY METHODS Kleinfelder personnel performed a survey of painted and/or coated surfaces suspected of containing lead in the targeted survey areas of Site buildings. Mr. Richard Stevenson, a California Department of Public Health (CDPH) Certified Lead Inspector/Assessor/Project Monitor (No ), performed the LCM survey using US EPA, Federal Housing and Urban Development (HUD), and CDPH protocols as a general guidance. Predominant interior and exterior painted and/or coated surfaces were tested for the presence of lead utilizing a portable Niton x-ray fluorescence (XRF) analyzer unit. The XRF unit allows for non-destructive/non-intrusive measurements of lead content in paints up to 3/8-inch thick. Kleinfelder collected 58 XRF readings (including calibration checks) from building components suspected of containing lead in the targeted survey areas of the Site buildings. The XRF measurements were recorded via field notations, which are provided in Appendix A. The survey also included the visual observation and physical assessment of painted surfaces. The physical assessment is performed by assessing if a painted surface is in intact, fair or poor condition. Suspect painted surfaces observed to be cracking, peeling away from the substrate, or otherwise damaged are considered to be in fair to poor condition, depending on the degree of the observed damage. Materials that do not exhibit these conditions are considered to be in intact condition. 4.2 REGULATORY OVERVIEW FOR LEAD-BASED PAINTS The US EPA, HUD and CDPH define LBP as paint containing greater than 0.5% lead by weight or 5,000 parts per million (ppm) of total lead by laboratory analysis, or a lead content of 1.0 milligrams per square centimeter (mg/cm 2 ) by XRF measurement. Furthermore, the City of San Diego requires disturbance of any paint containing 0.5 mg/cm 2 or 1,000 ppm total lead be performed using lead-safe work practices as defined in the City of San Diego Lead Hazard Prevention and Control Ordinance. Federal OSHA and Cal/OSHA regulations (Lead Construction Standard) do not provide a definition for lead-based paint but refer to the US EPA, HUD and A/SDI18R80327 Page 8 of 17 June 25, 2018

12 CDPH criteria mentioned above. Cal/OSHA is primarily concerned with worker protection, and regulates any amount of lead contained within painted building components. Both Federal OSHA and Cal/OSHA provide an Action Level (AL) of 30 micrograms per cubic meter (µg/m 3 ) of airborne lead for an 8-hour, time-weighted average. Specific worker training and worker protection are to be provided by employers if workers are exposed to airborne lead at or above the AL. Additionally, both Federal OSHA and Cal/OSHA provide a Permissible Exposure Limit (PEL) for worker exposure to airborne lead particles of 50 µg/m 3 of air for an 8-hour, timeweighted average (TWA). According to Cal/OSHA (CCR Title 8, Section ), employers may assume that disturbance of coatings or materials shown to contain less than 0.06% lead by weight (equivalent to 600 ppm lead) will not result in exposures above the applicable AL as long as workers are not performing the Cal/OSHA designated trigger tasks (such as manual demolition, manual sanding or scraping, or abrasive blasting). However, renovation or demolition activities that include materials with lead in any concentration could, under certain circumstances, trigger Federal OSHA and Cal/OSHA regulations. The concentrations of airborne lead generated by disturbing paints at the Site would vary based upon several factors, including the type of activity (including "trigger tasks") and the severity of disturbance to the building materials. Measurement of airborne lead concentrations would require air monitoring during building material disturbance by a trained lead professional. 4.3 LEAD-CONTAINING MATERIALS SURVEY RESULTS A summary of Kleinfelder s XRF measurements of the lead content of the various paints applied to the building components is presented in Table 2. In accordance with CCR Title 8 Section , CCR Title 17 Section et. seq., and the City of San Diego Lead Hazard Prevention and Control Ordinance (Chapter 5, Article 10, Division 10 of City of San Diego Municipal Code) criteria, XRF measurement results were interpreted as follows: a Positive-Lead-Based Paint (LBP) result is indicated when the XRF measurement reading is 0.5 mg/cm 2 or greater, a Negative-Lead-Containing Paint (LCP) result is indicated when the XRF measurement reading is 0.10 mg/cm 2 or greater, but less than 0.5 mg/cm 2, and a Negative result is indicated when the XRF measurement reading is less than 0.10 mg/cm A/SDI18R80327 Page 9 of 17 June 25, 2018

13 4.3.1 Lead-Based Paints Based on our review of XRF readings, LBPs were not identified within the targeted survey areas of Site Buildings 3232 or Lead-Containing Paints Based on our review of XRF readings, LCPs were not identified within the targeted survey areas of Buildings With the following exception, LCPs were also not identified within the targeted survey areas of Buildings Brown paint applied to the metal door frame of the southern entry to the hallway contains 0.21 mg/cm 2 of lead by XRF reading and is therefore, classified as LCP. The brown paint was observed to be in an intact condition A/SDI18R80327 Page 10 of 17 June 25, 2018

14 5 OTHER HAZARDOUS BUILDING MATERIALS SURVEY 5.1 OTHER HAZARDOUS BUILDING MATERIALS SURVEY METHODS Kleinfelder personnel visually inspected the targeted survey areas of the Site buildings for equipment that may contain PCBs, mercury or mercury vapor, CFC-containing refrigerants, and other potential hazardous materials. Survey methods included visual observation. No samples of suspect hazardous materials were collected during this portion of the survey. 5.2 REGULATORY OVERVIEW FOR OTHER HAZARDOUS MATERIALS Other hazardous building materials documented at the Site included mercury-containing equipment, PCB-containing equipment, lead-containing batteries, CFC-containing equipment, and Universal Wastes (e.g., fluorescent light tubes). Regulatory oversight for removal and disposal of these materials is provided by a variety of Federal and State agencies PCBs US EPA (40 CFR Part 761) requires that insulating oils containing PCBs at concentrations greater than 50 milligrams per liter be disposed of properly by a licensed hazardous waste hauler. Cal/OSHA provides a PEL for worker exposure to airborne PCBs of 0.05 milligram per cubic meter (mg/m 3 ) on an 8-hour TWA basis Universal Waste California s Universal Waste Rule allows individuals and businesses to transport, handle, and recycle certain common hazardous wastes, termed Universal Wastes, in a manner that differs from the requirements of most hazardous wastes. The hazardous waste regulations found in CCR, Title 22, Division. 4.5, Chapter 11, Section list seven categories of hazardous wastes that can be managed as Universal Wastes. An unwanted item that falls within one of these waste streams may be handled, transported, and recycled following the simple requirements set forth in the Universal Waste Regulations (UWR) in CCR Title 22, Division 4.5, Chapter A/SDI18R80327 Page 11 of 17 June 25, 2018

15 A small quantity generator of Universal Waste accumulates no more than 5,000 kilograms (kg) of waste and no more than 35 kg of mercury drained from gauges on a given site. A US EPA identification (ID)/Notification and Uniform Hazardous Waste Manifest is not required for disposal of Universal Waste. Universal Wastes should be placed in containers according to the Universal Waste Container Requirements in CCR Title 22, Section Universal Wastes, and containers and packages of Universal Waste, should be labeled or marked to identify their types. Universal Waste should be sent to a facility authorized to collect, recycle, or dispose of Universal Waste. Pursuant to Cal/OSHA, the PEL for airborne mercury is 0.1 mg/m 3 and the PEL for acid (using the PEL for sulfuric acid) is 1.0 mg/m 3 of air for an 8-hour TWA basis. Certain other regulations that may apply include the following (although this is not a complete list): 29 CFR Air Contaminants; 40 CFR, Part 82 - Protection of Stratospheric Ozone; Refrigerant Recycling; 40 CFR, Part PCB Manufacturing, Processing, Distribution in Commerce, and Use Prohibitions; 40 CFR, Parts 260 through Federal Regulations for Identification, Transportation, and Disposal of Hazardous Wastes; 22 CCR, Sections through California Regulations for Identification, Transportation, and Disposal of Hazardous Wastes; and, 49 CFR, Parts 171 through United States Department of Transportation (DOT) regulations. 5.3 OTHER HAZARDOUS BUILDING MATERIALS SURVEY RESULTS A summary of equipment observed in the targeted survey areas of the Site buildings, which may contain other hazardous materials, is presented in Table 3. Typical hazardous building materials observed in the Site buildings included, but are not limited to: A/SDI18R80327 Page 12 of 17 June 25, 2018

16 Fluorescent light tubes that may contain mercury or mercury vapor; Fluorescent light fixture ballasts that may contain PCBs; and, Exit signs with batteries that may contain lead acid or heavy metals; A/SDI18R80327 Page 13 of 17 June 25, 2018

17 6 CONCLUSIONS AND RECOMMENDATIONS 6.1 CONCLUSIONS Based upon Kleinfelder s limited HBMS and subsequent laboratory analysis, the following hazardous building materials (denoted with an X in the respective column) have been identified at the Site buildings. Summary of HBMS Findings BUILDING ACM LBP LCP HBM Building 3232, 1 st Floor X Building 3292, 1 st Floor X X Notes: ACM = Asbestos-containing materials LBP = Lead-based paints LCP = Lead-containing paints HBM = Other hazardous building materials X = Denotes specified material was identified in building 6.2 RECOMMENDATIONS Planned renovation or general work activities, which may disturb LCP or other hazardous building materials, should be performed by properly trained and qualified personnel in accordance with all Federal, State, and local regulations, as implemented by Cal/OSHA, Federal OSHA, US EPA, DTSC, and SDCAPCD. Prior to future demolition work, Kleinfelder recommends that the following actions be taken: Prior to building renovation, the owner of the property should retain a State of Californialicensed lead abatement contractor to perform abatement of LCP that could potentially be disturbed. The general contractor for the renovation project may be a source of information concerning locally licensed abatement contractors. Kleinfelder can also provide names of licensed and qualified abatement contractors in the area upon request. Submittal of an SDCAPCD Notification of Demolition or Asbestos Removal is required for every demolition in SDCAPCD s jurisdiction, even when no ACMs are present, and for each asbestos removal project where the amount of ACM to be removed is equal to, or greater than 100 square or linear feet. Prior to the initiation of abatement or demolition A/SDI18R80327 Page 14 of 17 June 25, 2018

18 work, the abatement or demolition contractor must complete the Notification of Demolition or Asbestos Removal form and submit it to SDCAPCD at least 10 business days before the start of abatement or demolition. SDCAPCD will return the form, with a notification number added, to the abatement or demolition contractor, depending on who submitted the form. Written notification to the local Cal/OSHA district office will be required from the selected lead abatement contractor regarding its Intent to Conduct Lead-Related Work. This notifications should be submitted at least 24 hours in advance of performing lead-related work. The Site may have a waste management program designed to manage and reduce waste. Kleinfelder recommends the client research records for the Site regarding its waste management program to evaluate if the other potentially hazardous building materials can be managed under the Universal Waste Rules. These items will require segregation and may require further testing and analysis to determine whether they meet the definition of a hazardous waste in California. Hazardous wastes should only be handled by properly trained workers. Notification should be provided to contractor and subcontractor personnel as to the presence of LCP and other hazardous building materials at the Site A/SDI18R80327 Page 15 of 17 June 25, 2018

19 7 LIMITATIONS This work was performed in a manner consistent with that level of care and skill ordinarily exercised by other members of Kleinfelder s profession practicing in the same locality, under similar conditions and at the date the services are provided. Our conclusions, opinions and recommendations are based on a limited number of observations and data. It is possible that conditions could vary between or beyond the data evaluated. Kleinfelder makes no other representation, guarantee or warranty, express or implied, regarding the services, communication (oral or written), report, opinion, or instrument of service provided. This report may be used only by Joseph Chow and Associates, Inc. (Client), the Project Manager, and the registered design professional in responsible charge and only for the purposes stated for this specific engagement within a reasonable time from its issuance, but in no event later than two (2) years from the date of the report. The work performed was based on project information provided by the Client. If Client does not retain Kleinfelder to review any revisions or modifications to the plans and specifications, Kleinfelder assumes no responsibility for the suitability of our estimate. In addition, if there are any changes in the field to the plans and specifications, Client must obtain written approval from Kleinfelder s engineer that such changes do not affect our recommendations. Failure to do so will vitiate Kleinfelder s recommendations. Kleinfelder offers various levels of investigative and engineering services to suit the varying needs of different clients. It should be recognized that definition and evaluation of environmental conditions are a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with incomplete knowledge of site conditions present due to the limitations of data from field studies. Although risk can never be eliminated, more-detailed and extensive studies yield more information, which may help understand and manage the level of risk. Since detailed study and analysis involves greater expense, our clients participate in determining levels of service that provide adequate information for their purposes at acceptable levels of risk. Acceptance of this report will indicate that the Client has reviewed the document and determined that it does not need or want a greater level of service than provided A/SDI18R80327 Page 16 of 17 June 25, 2018

20 During the course of the performance of Kleinfelder's services, hazardous materials may have been discovered. Kleinfelder assumes no responsibility or liability whatsoever for any claim, loss of property value, damage, or injury that results from pre-existing hazardous materials being encountered or present on the project site, or from the discovery of such hazardous materials. Nothing contained in this report should be construed or interpreted as requiring Kleinfelder to assume the status of an Owner, operator, or generator, or person who arranges for disposal, transport, storage, or treatment of hazardous materials within the meaning of any governmental statute, regulation, or order. Client is solely responsible for directing notification of all governmental agencies, and the public at large, of the existence, release, treatment or disposal of any hazardous materials observed at the project site, either before or during performance of Kleinfelder's services. Client is responsible for directing all arrangements to lawfully store, treat, recycle, dispose, or otherwise handle hazardous materials, including cuttings and samples resulting from Kleinfelder's services A/SDI18R80327 Page 17 of 17 June 25, 2018

21 FIGURES A/SDI18R80327 June 25, 2018

22 CAD FILE: U:\DFAHRNEY\Old-HP-computer\TITLEBLOCKS.dwg LAYOUT: 11x17Horiz PLOTTED: 1/12/ :50 AM BY: dean fahrney D N.T.S N KLF 22 KLF 23 The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice. Kleinfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. This document is not intended for use as a land survey product nor is it designed or intended as a construction design document. The use or misuse of the information contained on this graphic representation is at the sole risk of the party using or misusing the information. EXPLATION KLF 33 KLF 27 SAMPLE IDENTIFICATION AND APPROXIMATE LOCATION OF SUSPECT ACM BULK SAMPLE A, B, C, D ORIENTATION OF LEAD CONTAINING MATERIALS XRF SURVEY A KLF 28 KLF 25 KLF 29 KLF 26 KLF 24 C KLF 32 KLF 31 KLF 30 KLF 33 PROJECT NO xxxx DRAWN BY Drawn RHS CHECKED BY Checked MRC DATE: REVISED: SAMPLE LOCATION TITLE1 MAP BUILDING 3232 TITLE2 1ST FLOOR VAL PROJECT BASE SAN ME DIEGO BUILDING 3232 AND 3292 RENOVATION PROJECT PHASE 3 B3232 PROJECT 1ST FLOOR ADDRESS AND B3292 1ST FLOOR SAN DIEGO, CALIFORNIA PROJECT LOCATION B FIGURE 1 ###

23 CAD FILE: U:\DFAHRNEY\Old-HP-computer\TITLEBLOCKS.dwg LAYOUT: 11x17Horiz PLOTTED: 1/12/ :50 AM BY: dean fahrney D N N.T.S KLF 3 KLF 2 The information included on this graphic representation has been compiled from a variety of sources and is subject to change without notice. Kleinfelder makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. This document is not intended for use as a land survey product nor is it designed or intended as a construction design document. The use or misuse of the information contained on this graphic representation is at the sole risk of the party using or misusing the information. KLF 18 KLF 21 KLF 11 KLF 20 KLF 8 KLF 6 KLF 9 KLF 4 KLF 17 KLF 13 KLF 5 KLF 10 KLF 1 KLF 15 KLF 12 KLF 19 KLF 14 KLF 16 KLF 7 EXPLATION KLF 21 SAMPLE IDENTIFICATION AND APPROXIMATE LOCATION OF SUSPECT ACM BULK SAMPLE A, B, C, D ORIENTATION OF LEAD CONTAINING MATERIALS XRF SURVEY A C PROJECT NO xxxx DRAWN BY Drawn RHS CHECKED BY Checked MRC DATE: REVISED: SAMPLE TITLE1 LOCATION MAP BUILDING 3292 TITLE2 1ST FLOOR VAL PROJECT BASE SAN ME DIEGO BUILDING 3232 AND 3292 RENOVATION PROJECT PHASE 3 B3232 PROJECT 1ST FLOOR ADDRESS AND B3292 1ST FLOOR SAN DIEGO, CALIFORNIA PROJECT LOCATION B FIGURE 2 ###

24 TABLES A/SDI18R80327 June 25, 2018

25 TABLE 1 Summary of Asbestos Survey Results Naval Base San Diego Buildings 3232 and 3292 Renovation Project Phase 3 - Building st Floor and Building st Floor San Diego, California Sample Number Sample Description 1 Sample Location Asbestos Content Building st Floor Condition / Friability Estimated Quantity KLF-1 2-foot by 4-foot lay-in ceiling tile Room 103, west-middle of room, ceiling ND KLF-2 12-inch ceiling tile / Brown mastic Corridor, west end near southern exit, ceiling Ceiling tile: ND Mastic: ND KLF-3 12-inch ceiling tile / Brown mastic Corridor, west end near western exit, ceiling Ceiling tile: ND Mastic: ND KLF-4 Drywall / Joint compound Room 104A, wall, southeast corner Drywall: ND Joint compound: ND KLF-5 Drywall / Joint compound Room 104A, wall, northwest corner Drywall: ND Joint compound: ND KLF-6 Drywall / Joint compound Room 104, wall, southeast corner Drywall: ND Joint compound: ND KLF-7 Drywall / Joint compound Room 103, wall, northeast corner of stick-out Drywall: ND Joint compound: ND KLF-8 Drywall / Joint compound Room 103, wall, northwest corner Drywall: ND Joint compound: ND KLF-9 4-inch black base cove / Tan mastic Room 104A, south wall Cove base: ND Mastic: ND KLF-10 KLF-11 Tan mastic associated with 4-inch black base cove Tan mastic associated with 4-inch black base cove Room 103, north wall at northwestern door ND Corridor, south wall ND KLF-12 Tan raised floor riser mastic Room 103, eastern portion, beneath raised floor ND KLF-13 Tan raised floor riser mastic Room 103, western portion, beneath raised floor ND KLF-14 Yellow floor mastic (former carpet glue) Room 103, eastern portion, beneath raised floor ND KLF-15 Yellow floor mastic (former carpet glue) Room 103, western portion, beneath raised floor ND KLF inch mottled beige VFT / Yellow mastic Room 103, northeast entry VFT: ND Mastic: ND KLF inch mottled beige VFT / Yellow mastic Room 103, northwest entry VFT: ND Mastic: ND KLF inch mottled tan VFT / Black mastic Corridor, west side VFT: ND Mastic: ND KLF inch mottled tan VFT / Black mastic Corridor, east side at Room 104A VFT: ND Mastic: ND KLF-20 Gray CMU grout Corridor, south wall, east side ND KLF-21 Gray CMU grout Corridor, south wall, west side ND A/SDI18R Kleinfelder Page 1 of 2 June 25, 2018

26 TABLE 1 Summary of Asbestos Survey Results Naval Base San Diego Buildings 3232 and 3292 Renovation Project Phase 3 - Building st Floor and Building st Floor San Diego, California Sample Number Sample Description 1 Sample Location Asbestos Content Building st Floor Condition / Friability Estimated Quantity KLF-22 4-inch gray base cove / mastic Room 116, northern entry/exit Cove base: ND Mastic: ND KLF-23 Clear carpet square mastic Room 116, northern entry/exit ND KLF-24 Drywall / Joint compound Room S1-44, wall, southwest corner Drywall: ND Joint compound: < 1% CH ( 0.1% CH by 1,000 PC) KLF-25 Drywall / Joint compound Room S1-44, wall, southeast corner Drywall: ND Joint compound: < 1% CH (<0.1% CH by 1,000 PC) KLF-26 4-inch gray base cove / mastic Room S1-44, wall at southern entry Cove base: ND Mastic: ND KLF-27 Clear carpet square mastic Room S1-44, floor, middle of room ND KLF-28 2-foot by 2-foot acoustic ceiling tile Room S1-44, ceiling, near southern entry ND KLF inch dark gray VFT / Yellow mastic Janitor's Closet, floor near door VFT: ND Mastic: ND KLF-30 Drywall / Joint compound Room S1-54, wall, southeast corner Drywall: ND Joint compound: ND KLF-31 4-inch gray base cove / mastic Room S1-54, wall, northwest corner by storage closet Cove base: ND Mastic: ND KLF-32 Clear carpet square mastic Room S1-54, floor, near northeast entry ND KLF-33 2-foot by 2-foot acoustic ceiling tile Room S1-54B, ceiling, north side of classroom ND Notes: 1 = Sample descriptions are derived from field observations and chain-of-custody documentation. VFT = Vinyl floor tile CMU = Concrete masonry unit 1,000 PC = Point count analysis by 1,000-point count method CH = Chrysotile asbestos ND = None detected = Not applicable. Condition, friability, and area estimates are because laboratory results were reported as none detected or equal to / less than 0.1% for asbestos content A/SDI18R Kleinfelder Page 2 of 2 June 25, 2018

27 Reading Number TABLE 2 Summary of Lead-Containing Materials Survey Results Naval Base San Diego Buildings 3232 and 3292 Renovation Project Phase 3 - Building st Floor and Building st Floor San Diego, California Component Substrate Side Condition Color Location Results mg/cm 2 Building st Floor 1 Shutter Calibration Pass Calibration mg/cm 2 standard Pass Calibration mg/cm 2 standard (buried) Pass Wall Drywall A Intact Beige Room 104A Negative < Wall Drywall B Intact Beige Room 104A Negative < Wall Drywall C Intact Beige Room 104A Negative < Wall Drywall D Intact Beige Room 104A Negative < Window Frame Metal A Intact Brown Room 104A Negative < Door Wood C Intact Beige Room 104A Negative < Door Frame Metal C Intact Brown Room 104A Negative Wall Drywall A Intact Beige Room 104 Negative < Wall Drywall B Intact Beige Room 104 Negative < Wall Drywall C Intact Beige Room 104 Negative < Wall Concrete D Intact Beige Room 104 Negative < Window Frame Metal A Intact Brown Room 104 Negative < Door Wood C Intact Beige Room 104 Negative < Door Frame Metal C Intact Brown Room 104 Negative Wall Concrete A Intact Room 103 Negative < Wall Drywall B Intact Room 103 Negative < Wall Drywall C Intact Room 103 Negative < Wall Drywall D Intact Room 103 Negative < Door Wood A Intact Beige Room 103 Negative < Door Frame Metal A Intact Brown Room 103 Negative Wall Drywall A Intact Beige Hallway Negative < Wall Drywall C Intact Beige Hallway Negative < Door Wood C Intact Hallway Negative Door Frame Metal C Intact Brown Hallway Negative-LCP A/SDI18R Kleinfelder Page 1 of 2 June 25, 2018

28 Reading Number Notes: TABLE 2 Summary of Lead-Containing Materials Survey Results Naval Base San Diego Buildings 3232 and 3292 Renovation Project Phase 3 - Building st Floor and Building st Floor San Diego, California Component Substrate Side Condition Color Location Results mg/cm 2 28 Wall Drywall A Intact Brown Room S1-44 Negative < Wall Drywall B Intact Gray Room S1-44 Negative < Wall Drywall C Intact Gray Room S1-44 Negative < Wall Drywall D Intact Gray Room S1-44 Negative < Door Wood A Intact Gray Room S1-44 Negative < Door Frame Metal A Intact Brown Room S1-44 Negative Door Wood B Intact Gray Room S1-44 Negative < Door Frame Metal B Intact Gray Room S1-44 Negative < Wall Drywall A Intact Janitor Closet Negative < Wall Drywall B Intact Janitor Closet Negative < Wall Drywall C Intact Janitor Closet Negative < Wall Drywall D Intact Janitor Closet Negative < Wall Drywall A Intact Room S1-54 Negative < Wall Drywall B Intact Room S1-54 Negative < Wall Drywall C Intact Room S1-54 Negative < Wall Drywall D Intact Room S1-54 Negative < Door Frame Metal B Intact Gray Room S1-54 Negative < Door Wood D Intact Gray Room S1-54 Negative < Door Frame Metal D Intact Gray Room S1-54 Negative < Wall Drywall A Intact Beige Room S1-54B - Classroom Negative < Wall Drywall B Intact Beige Room S1-54B - Classroom Negative < Wall Drywall C Intact Beige Room S1-54B - Classroom Negative < Wall Drywall D Intact Tan Room S1-54B - Classroom Negative < Door Wood A Intact Gray Room S1-54B - Classroom Negative < Door Frame Metal A Intact Gray Room S1-54B - Classroom Negative < Wall Drywall A Intact Beige Room S Office Negative < Wall Drywall B Intact Beige Room S Office Negative < Wall Drywall C Intact Beige Room S Office Negative < Wall Drywall D Intact Beige Room S Office Negative < Calibration mg/cm 2 standard Pass Calibration mg/cm 2 standard (buried) Pass 1.04 XRF = X-ray fluorescence LCP = Lead-containing paint mg/cm 2 = milligrams per square centimeter Negative-LCP = Result indicates an XRF reading greater than or equal to 0.10 mg/cm 2 but less than 0.5 mg/cm 2. Results are indicated in italicized text. Negative = Result indicates an XRF reading less than 0.10 mg/cm 2. Building st Floor A/SDI18R Kleinfelder Page 2 of 2 June 25, 2018

29 TABLE 3 Summary of Other Hazardous Building Materials Survey Results Naval Base San Diego Buildings 3232 and 3292 Renovation Project Phase 3 - Building st Floor and Building st Floor San Diego, California Installed Equipment Locations Estimated Quantity Potential Hazardous Material Building st Floor Fluorescent light tubes Throughout survey area 61 Mercury and mercury vapor Fluorescent light fixture ballasts Throughout survey area 38 PCBs Exit signs with batteries Exits from Room 103, west end of hallway 3 Battery acid, heavy metals Building st Floor Fluorescent light tubes Throughout survey area 59 Mercury and mercury vapor Exit signs with batteries Exits from Room S Battery acid, heavy metals Notes: PCBs = Polychlorinated Biphenyls Material quantities are estimates only and are not intended for bidding purposes. Contractors are responsible for verifying quantities prior to bid A/SDI18R Kleinfelder Page 1 of 1 June 25, 2018

30 APPENDIX A XRF Field Measurement Documentation, Laboratory Analytical Reports, and Chain-of-Custody Documentation A/SDI18R80327 June 25, 2018

31 EMSL Analytical, Inc Convoy Court,Building 4, Suite A San Diego, CA Tel/Fax: (858) / (858) / sandiegolab@emsl.com EMSL Order: Customer ID: 32KLFD45 Customer PO: Project ID: Attention: Rich Stevenson Phone: Kleinfelder Fax: (949) Ada Received Date: 06/07/2018 9:48 AM Suite 250 Analysis Date: 06/09/2018 Irvine, CA Project: NBSD B3232_3292/ Collected Date: Test Report: Asbestos Analysis of Bulk Materials via EPA 600/R-93/116 Method using Polarized Light Microscopy Non-Asbestos Sample Description Appearance % Fibrous % KLF KLF-2-Ceiling Tile KLF-2-Mastic A KLF-3-Ceiling Tile KLF-3-Mastic A KLF-4-Drywall KLF-4-Joint Compound A KLF-5-Drywall KLF-5-Joint Compound A KLF-6-Drywall KLF-6-Joint Compound A KLF-7-Drywall RM 103 W MIDDLE OF RM CEILING 2X4 CEILING TILE RM 103 CORRIDOR W END NEAR S EXIT CEILING 12" CEILING TILE/BROWN MASTIC RM 103 CORRIDOR W END NEAR S EXIT CEILING 12" CEILING TILE/BROWN MASTIC RM 103 CORRIDOR W END NEAR W EXIT CEILING 12" CEILING TILE/BROWN MASTIC RM 103 CORRIDOR W END NEAR W EXIT CEILING 12" CEILING TILE/BROWN MASTIC RM 104A WALL SE CORNER DW/JC RM 104A WALL SE CORNER DW/JC RM 104A WALL NW CORNER DW/JC RM 104A WALL NW CORNER DW/JC RM 104 WALL SE CORNER DW/JC RM 104 WALL SE CORNER DW/JC RM 103 WALL NE CORNER OF STICK-OUT DW/JC Fibrous Fibrous Brown Fibrous Brown Fibrous Fibrous Fibrous Fibrous 60% Cellulose 30% Cellulose 40% Min. Wool 30% Cellulose 40% Min. Wool 2% Glass 2% Glass 2% Glass 2% Glass 10% Perlite 30% Non-fibrous (Other) 10% Perlite 20% Non-fibrous (Other) 10% Perlite 20% Non-fibrous (Other) 98% Non-fibrous (Other) 98% Non-fibrous (Other) 98% Non-fibrous (Other) 98% Non-fibrous (Other) Asbestos % Type Initial report from: 06/09/ :54:39 ASB_PLM_0008_ Printed: 6/9/2018 2:54 PM Page 1 of 4

32 EMSL Analytical, Inc Convoy Court,Building 4, Suite A San Diego, CA Tel/Fax: (858) / (858) / sandiegolab@emsl.com EMSL Order: Customer ID: 32KLFD45 Customer PO: Project ID: Test Report: Asbestos Analysis of Bulk Materials via EPA 600/R-93/116 Method using Polarized Light Microscopy Non-Asbestos Sample Description Appearance % Fibrous % KLF-7-Joint Compound A KLF-8-Drywall KLF-8-Joint Compound A KLF-9-Cove Base KLF-9-Mastic A KLF KLF KLF KLF KLF KLF KLF-16-Floor Tile KLF-16-Mastic A KLF-17-Floor Tile KLF-17-Mastic A RM 103 WALL NE CORNER OF STICK-OUT DW/JC RM 103 WALL NW CORNER DW/JC RM 103 WALL NW CORNER DW/JC RM 104A S WALL 4" BLK BASE COVE/TAN MASTIC RM 104A S WALL 4" BLK BASE COVE/TAN MASTIC RM 103 N WALL AT NW DOOR TAN MASTIC ASSOC. W/4" BLK BASE RM 103 CORRIDOR S WALL TAN MASTIC ASSOC. W/4" BLK BASE RM 103 E PORTION BENEATH RAISED FLR TAN RAISED FLR RISER MASTIC RM 103 W PORTION BENEATH RAISED FLR TAN RAISED FLR RISER MASTIC RM 103 E PORTION BENEATH RAISED FLR YELLOW FLR MASTIC FORMER CARPET GLUE RM 103 W PORTION BENEATH RAISED FLR YELLOW FLR MASTIC FORMER CARPET GLUE RM 103 NE ENTRY 12" MOTTLED BEIGE VFT YELLOW MASTIC RM 103 NE ENTRY 12" MOTTLED BEIGE VFT YELLOW MASTIC RM 103 NW ENTRY 12" MOTTLED BEIGE VFT YELLOW MASTIC RM 103 NW ENTRY 12" MOTTLED BEIGE VFT YELLOW MASTIC Fibrous Black Tan Tan Tan Tan Tan Yellow Yellow Beige Yellow Beige Yellow 2% Glass 98% Non-fibrous (Other) Asbestos % Type Initial report from: 06/09/ :54:39 ASB_PLM_0008_ Printed: 6/9/2018 2:54 PM Page 2 of 4

33 EMSL Analytical, Inc Convoy Court,Building 4, Suite A San Diego, CA Tel/Fax: (858) / (858) / sandiegolab@emsl.com EMSL Order: Customer ID: 32KLFD45 Customer PO: Project ID: Test Report: Asbestos Analysis of Bulk Materials via EPA 600/R-93/116 Method using Polarized Light Microscopy Non-Asbestos Sample Description Appearance % Fibrous % KLF-18-Floor Tile KLF-18-Mastic A KLF-19-Floor Tile KLF-19-Mastic A KLF KLF KLF-22-Cove Base KLF-22-Mastic A KLF KLF-24-Drywall KLF-24-Joint Compound A KLF-25-Drywall KLF-25-Joint Compound A KLF-26-Cove Base KLF-26-Mastic A KLF RM 103 CORRIDOR W SIDE 12" MOTTLED TAN VFT BLK MASTIC RM 103 CORRIDOR W SIDE 12" MOTTLED TAN VFT BLK MASTIC RM 103 CORRIDOR E RM 104A 12" MOTTLED TAN VFT BLK MASTIC RM 103 CORRIDOR E RM 104A 12" MOTTLED TAN VFT BLK MASTIC RM 103 CORRIDOR S WALL E SIDE GRAY CMU GROUT RM 103 CORRIDOR S WALL W SIDE GRAY CMU GROUT RM 116 N ENTRY/EXIT 4" GRAY BASE COVE WHT MASTIC RM 116 N ENTRY/EXIT 4" GRAY BASE COVE WHT MASTIC RM 116 N ENTRY/EXIT CLEAR CARPET SQUARE MASTIC S1-44 WALL SW CORNER DW/JC S1-44 WALL SW CORNER DW/JC S1-44 WALL SE CORNER DW/JC S1-44 WALL SE CORNER DW/JC S1-44 WALL AT S ENTRY 4" GRAY BASE COVE WHT MASTIC S1-44 WALL AT S ENTRY 4" GRAY BASE COVE WHT MASTIC S1-44 FLR MIDDLE CLEAR CARPET GLUE MASTIC Tan Black Tan Black Gray Gray Gray Clear Fibrous Fibrous Gray Clear 3% Cellulose 3% Cellulose 3% Glass 3% Glass 97% Non-fibrous (Other) 97% Non-fibrous (Other) 97% Non-fibrous (Other) 97% Non-fibrous (Other) Asbestos % Type <1% Chrysotile <1% Chrysotile Initial report from: 06/09/ :54:39 ASB_PLM_0008_ Printed: 6/9/2018 2:54 PM Page 3 of 4

34 EMSL Analytical, Inc Convoy Court,Building 4, Suite A San Diego, CA Tel/Fax: (858) / (858) / sandiegolab@emsl.com EMSL Order: Customer ID: 32KLFD45 Customer PO: Project ID: Test Report: Asbestos Analysis of Bulk Materials via EPA 600/R-93/116 Method using Polarized Light Microscopy Non-Asbestos Sample Description Appearance % Fibrous % KLF KLF-29-Floor Tile KLF-29-Mastic A KLF-30-Drywall KLF-30-Joint Compound A KLF-31-Cove Base KLF-31-Mastic A KLF KLF S1-44 CEILING NEAR S ENTRY 2X2 ACOUSTIC CEILING PANEL J.C. FLR AT DOOR 12" DARK GRAY VFT YELLOW MASTIC J.C. FLR AT DOOR 12" DARK GRAY VFT YELLOW MASTIC S1-54 WALL SE CORNER DW/JC S1-54 WALL SE CORNER DW/JC S1-54 WALL NW CORNER BY STORAGE CLOSET 4" GRAY BASE COVE WHT MASTIC S1-54 WALL NW CORNER BY STORAGE CLOSET 4" GRAY BASE COVE WHT MASTIC S1-54 FLR NEAR NE ENTRY CLEAR CARPET SQUARE MASTIC S1-54B CLASSROOM CEILING N SIDE 2X2 ACOUSTIC CEILING PANEL Fibrous Gray Yellow Fibrous Gray Clear Fibrous 40% Cellulose 30% Min. Wool 3% Glass 40% Cellulose 30% Min. Wool 10% Perlite 20% Non-fibrous (Other) 97% Non-fibrous (Other) 10% Perlite 20% Non-fibrous (Other) Asbestos % Type Analyst(s) Natalia Toscano (52) Mariah Curran, Laboratory Manager or Other Approved Signatory EMSL maintains liability limited to cost of analysis. This report relates only to the samples reported and may not be reproduced, except in full, without written approval by EMSL. EMSL bears no responsibility for sample collection activities or analytical method limitations. Interpretation and use of test results are the responsibility of the client. This report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST or any agency of the federal government. Non-friable organically bound materials present a problem matrix and therefore EMSL recommends gravimetric reduction prior to analysis. Samples received in good condition unless otherwise noted. Estimated accuracy, precision and uncertainty data available upon request. Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Reporting limit is 1% Samples analyzed by EMSL Analytical, Inc. San Diego, CA NVLAP Lab Code , CA ELAP 2713 Initial report from: 06/09/ :54:39 ASB_PLM_0008_ Printed: 6/9/2018 2:54 PM Page 4 of 4

35 EMSL Analytical, Inc Convoy Court,Building 4, Suite A San Diego, CA Phone/Fax: (858) / (858) / sandiegolab@emsl.com EMSL Order: Customer ID: 32KLFD45 Customer PO: Project ID: Attention: Rich Stevenson Phone: Kleinfelder Fax: (949) Ridge Route Drive Received: 06/07/2018 9:48 AM Suite 225 Analysis Date: 06/12/2018 Laguna Hills, CA Collected: Project: NBSD B3232_3292/ Test Report: Asbestos Analysis of Bulk Material via EPA 600/R-93/116. Quantitation using the 1,000 Point Count Procedure Non-Asbestos Sample Description Appearance % Fibrous % % Type Asbestos KLF-24-Joint Compound A S1-44 WALL SW CORNER DW/JC 99.9% Non-fibrous (Other) 0.1%Chrysotile KLF-25-Joint Compound A S1-44 WALL SE CORNER DW/JC <0.1%Chrysotile Analyst(s) Shayne Boney (2) Mariah Curran, Laboratory Manager or other approved signatory Some samples may contain asbestos fibers present in dimensions below PLM resolution limits.the limit of detection as stated in the method is 0.1%. EMSL Analytical Inc suggests that samples reported as <0.1% or none detected undergo additional analysis via TEM. The above test report relates only to the items tested. This report may not be reproduced, except in full, without written approval EMSL Analytical Inc. This test report must not be used by the client to claim product endorsement by NVLAP or any agency of the United States Government. EMSL Analytical Inc. bears no responsibility for sample collection activities, analytical method limitations, or the accuracy of results when requested to separate layered samples. EMSL Analytical Inc liability is limited to the cost of sample analysis.the test results contained within this report meet the requirements of NELAC unless otherwise noted. Samples received in good condition unless otherwise noted. Unless requested by the client, building materials manufactured with multiple layers (i.e. linoleum, wallboard, etc.) are reported as a single sample. Samples analyzed by EMSL Analytical, Inc. San Diego, CA Initial report from: 06/12/ :19:41 ASB_PLMPC_0006_0003 Printed 6/12/2018 5:19:42PM Page 1 of 1

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