P2599006_Attachments_1-3.pdf

Demolition Level Asbestos and Lead Survey Report

Green Island Multiple Structures

2983 Green Island Road Napa, California

September 6, 2023

Terracon Project No. R120P020

Prepared for:

Mr. Rob Benson

California Department of Fish and Wildlife Engineering Branch

1010 Riverside Parkway West Sacramento, California

Prepared by:

Terracon Consultants, Inc.

1220 Concord Avenue, Suite 450 Concord, California 94520

(510) 557-7144

Report Prepared by: Miguel Rocha Industrial Hygienist, CSST # 15-5504

Report Reviewed by: _____________________________________Karin Schroeter Project Manager CAC #92-0772, CDPH #2228

RBenson Typewriter

RBenson Typewriter Estimated quantities listed in this report are for information only.

Contractor shall be responsible for determining actual quantities for bidding purposes.

ii

September 6, 2023

Mr. Rob Benson California Department of Fish and Wildlife Engineering Branch 1010 Riverside Parkway West Sacramento, California

Telephone: (916) 323-1488 E-mail: rob.benson@wildlife.ca.gov

RE: Demolition Level Asbestos and Lead Survey Report Green Island Multiple Structures 2983 Green Island Road Napa, California

Dear Mr. Benson:

Terracon Consultants, Inc. (Terracon) hereby submits the attached report for the referenced site to the Department of Fish and Wildlife. The purpose of this report is to present the data gathered during the recent hazardous materials building survey as performed by Terracon Consultants, Inc.

(Terracon) on June 28 – June 29, 2023. We understand that this study was requested in preparation for the complete demolition of the affected structure.

Terracon appreciates the opportunity to provide this service to the Department of Fish and Wildlife. If you have any questions regarding this report, please contact our office at your convenience.

Sincerely, Terracon Consultants, Inc.

Miguel Rocha, CSST Karin Schroeter, CAC, CDPH Lead I/A Industrial Hygienist Industrial Hygiene Department Manager

TABLE OF CONTENTS

1.0 INTRODUCTION

1.1 Project Scope

1.2 Reliance

2.0 METHODS AND SAMPLING STRATEGY

2.1 Asbestos, Lead, PCBs, and Other Hazardous Building Materials

2.2 Visual Assessment - Asbestos

2.3 Physical Assessment - Asbestos

2.4 Sample Analysis - Asbestos

2.5 Lead Containing Paint and Materials

2.6 Visual Assessment - Lead Containing Paint and Materials

2.7 Physical Assessment - Lead Containing Paint and Materials

2.8 Paint and Bulk Material Analysis - Lead

2.9 Visual Assessment - Other Hazardous Building Materials

3.0 SURVEY FINDINGS

3.1 Asbestos

3.2 Lead Containing Paint and Bulk Materials

3.3 Other Hazardous Building Materials

4.0 CONCLUSIONS

5.0 REGULATORY OVERVIEW

5.1 Asbestos

5.2 Lead Containing Paint/Materials

5.3 Refrigerants

5.4 Universal Waste

6.0 LIMITATIONS / GENERAL COMMENTS

APPENDIX A ASBESTOS ANALYTICAL LABORATORY DATA

APPENDIX B LEAD ANALYTICAL LABORATORY DATA

APPENDIX C ACM MATERIAL LOCATION DIAGRAMS

APPENDIX D SITE INSPECTOR CERTIFICATIONS

Asbestos, Lead and Health and Safety Survey Report Green Island Site ■ Napa, California September 6, 2023 ■ Terracon Project No. R120P020

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DEMOLITION LEVEL ASBESTOS AND LEAD SURVEY REPORT

Green Island Site

Multiple Structures Napa, California

Terracon Project No. R120P020 September 1, 2023

1.0 INTRODUCTION

Terracon Consultants, Inc. (Terracon) conducted a limited pre-demolition level hazardous materials survey of four structures associated with the Green Island site located at 2983 Green Island Road in Napa, California. The survey was conducted on June 28-29, 2023. Survey activities were conducted in general accordance with the asbestos sampling protocols established in Environmental Protection Agency (EPA) regulation 40 Code of Federal Regulations (CFR) Part 763 Subpart E 763.86, (Asbestos Hazard Emergency Response Act, AHERA).

The purpose of this survey was to identify asbestos and lead containing materials within the affected areas that may be impacted by the pending planned demolition project scheduled to occur at the property. The areas included in this survey were as follows:

Residence North Garage South Garage Office Small Warehouse Large Warehouse Shed

A total of fifty-nine (59) suspect asbestos containing materials (ACMs) were identified and sampled throughout the aforementioned structures. Of the materials sampled, fifteen (15) were reported positive for asbestos content in concentrations exceeding the laboratory limit of detection. Confirmed asbestos containing materials were noted to be present in each of the four structures included within the survey.

Thirty-seven (37) painted surfaces, four (4) ceramic tile glazing compounds, and two (2) bulk building materials were sampled and analyzed for potential lead content during the survey. Of the materials sampled, thirty-nine (39) were found to contain lead in concentrations in exceedance of the laboratory detection limit. The presence of lead containing materials was reported in each of the seven (7) structures surveyed.

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Mercury containing lighting systems were present throughout the surveyed structures. All mercury containing materials must be removed from the site prior to demolition.

Representative lighting ballasts inspected in the structures were labeled as containing “No PCBs”.

All ballasts not specifically labeled as “No PCBs” are assumed to contain PCBs.

1.1 Project Scope

The scope of the survey was as follows:

Inspect the seven (7) listed buildings of the Green Island site for the presence of suspect ACMs, lead-containing paint, PCB-containing lighting ballasts as well as mercury containing light tubes.

Collect samples of suspect ACMs following a National Emissions Standards for Hazardous Air

Pollutants (NESHAPS) protocol for sample collection for a demolition survey.

Asbestos bulk samples will be analyzed using polarized light microscopy (PLM) in accordance with the EPA’s July 1993 method for the determination of asbestos in bulk building materials -

EPA 600/R-93/116.

Collect bulk paint chip samples of primary painted surfaces and other materials suspected to be lead containing. Bulk samples will be analyzed at an accredited laboratory by Flame Atomic Absorption (AA) for Total Lead reported in parts per million (ppm).

Submit a written report including analytical results, regulatory requirements, and conclusions.

1.2 Reliance

This report is for the exclusive use of the California Department of Fish and Wildlife for the demolition of various structures on the Green Island site in Napa, California. Reliance by any other party on this report is prohibited without written authorization of Terracon and the client. Reliance on this report by the client and all authorized parties will be subject to the terms, conditions, and limitations stated in the proposal, this report, and the project contract.

2.0 METHODS AND SAMPLING STRATEGY

2.1 Asbestos, Lead, PCBs, and Other Hazardous Building Materials

The survey was conducted by Remington Caldwell, California Certified Asbestos Consultant (CAC) and California Department of Public Health (CDPH) Lead Inspector/Assessor. Copies of pertinent training certifications are included in Appendix D. The asbestos portion of the survey was conducted in general accordance with the sample collection protocols established in EPA 40 CFR Part 763 Subpart E 763.86, AHERA. A summary of survey activities is provided below. EPA regulation 40 CFR 61, Subpart M, the National Emission Standards for Hazardous Air Pollutants (NESHAP) prohibits the release of asbestos fibers to the atmosphere during renovation or

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2.2 Visual Assessment - Asbestos

Survey activities were initiated with visual observation of the subject structures to identify homogeneous areas of suspect ACM. A homogeneous area (HA) consists of a building material that appears similar throughout in terms of color, size and texture with consideration given to the date of application. Assessment was conducted in all accessible areas of the buildings including the interiors, exteriors, and roofs.

2.3 Physical Assessment - Asbestos

A physical assessment of each HA of suspect ACM was conducted to assess the current 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.

Based on results of the visual observation, bulk samples of suspect ACM were collected in general accordance with EPA AHERA sampling protocols. Samples of suspect materials were collected from representative locations 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.

The selection of sample locations and frequency of sampling were based on Terracon’s observations and the assumption that like materials in the same area are homogeneous in content.

Terracon collected a total of one hundred and eighty-three (183) bulk samples from fifty-nine (59) homogeneous areas of suspect ACM. A summary of the materials reported to contain asbestos is provided in Table I below.

2.4 Sample Analysis - Asbestos

Asbestos bulk samples were submitted under chain of custody to Eurofins EPK Built Environment Testing, LLC (Eurofins) in Tustin, California for analysis by polarized light microscopy with dispersion staining techniques per EPA methodology 600/R-93/116. The percentage of asbestos, where applicable, was determined by microscopic visual estimation.

EML is accredited under the National Voluntary Laboratory Accreditation Program (NVLAP). The laboratory reports for the asbestos bulk samples are included as Appendix A.

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2.5 Lead Containing Paint and Materials

Terracon collected paint chip samples to determine the lead content in parts per million (ppm) of the predominant painted interior and exterior surfaces throughout the subject structures. In addition, suspect lead containing bulk materials, such as exterior sealants, were sampled to determine potential lead content. Suspect lead paint and bulk material samples were collected in sealable containers and labeled with unique sample numbers using an indelible marker.

2.6 Visual Assessment - Lead Containing Paint and Materials

Inspection activities began with visual observations of painted surfaces to identify unique combinations of paint on building materials. A unique combination of paint consists of paint that is applied to a building material and has similar color, substrate, and component. Assessment was conducted throughout the visually accessible areas of the subject buildings. Suspect lead containing bulk materials were also identified visually in similar fashion.

2.7 Physical Assessment - Lead Containing Paint and Materials

A physical assessment of the predominant combination of paints that would be expected to be impacted by pending construction activities was conducted in order to assess the condition of the paint. Typically, known lead containing paints that are in visually poor condition require stabilization activities prior to final building demolition. Lead paint chip samples were collected to comply with Cal-OSHA regulations (Title 8 CCR 1532.1 - Lead Exposure in Construction) for the proposed demolition activities. Paint and bulk materials were sampled to identify potential worker exposure and disposal restrictions.

Terracon collected forty-three (43) bulk samples of suspect lead-containing paint (LCP) and materials. A summary of suspect LCP samples collected during the survey is included in Table

III.

2.8 Paint and Bulk Material Analysis - Lead

Paint chip and bulk material samples were submitted under chain of custody to Eurofins in Tustin, California. Paint chip and material samples were analyzed by Flame Atomic Absorption method SW846-7000B. Eurofins is accredited by the American Industry Hygiene Association’s (AIHA) Environmental Lead Laboratory Accreditation Program (ELLAP) to perform Flame Atomic Absorption analysis. The laboratory reports for the lead paint chip and material samples are included as Appendix B.

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2.9 Visual Assessment - Other Hazardous Building Materials

The structures were visually surveyed for the presence of mercury containing products such as fluorescent light tubes, switches, high intensity discharge (HID) bulbs, and thermometers. Lighting fixtures were screened for the potential presence of PCB containing ballasts. All materials were visually assessed. No testing was performed.

3.0 SURVEY FINDINGS

3.1 Asbestos

A total of fifty-nine (59) suspect asbestos containing materials (ACMs) were identified and sampled throughout the interior and exterior areas of each of the seven (7) affected structures.

Upon laboratory analysis using polarized light microscopy techniques, fifteen (15) of the fifty-nine

(59) materials identified during the survey were reported to contain asbestos in concentrations exceeding the laboratory method limit of detection. Confirmed ACMs were present within the following structures.

Four (4) confirmed ACMs were reported within the Residence One (1) confirmed ACM was reported at the North Garage Five (5) confirmed ACMs were reported within the Office Five (5) confirmed ACMs were reported within Large Warehouse

The confirmed asbestos containing materials are listed in Table 1, below.

Table I - Asbestos Containing Materials Material

Description General Material

Location(s) Waste

Category Asbestos Result Estimated Quantity*

Residence

Drywall with Joint Compound

Material is Present Throughout Interior Wall and Ceiling Systems

RACM

Off-White Compound with Paint: 2% CH

Cream Tape: ND Off-White Joint Compound: 2%

CH

White Drywall with Brown

Paper: ND

4,000 sf

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Material Description

General Material Location(s)

Waste Category Asbestos Result Estimated

Quantity*

Drywall and Ceiling Texture

Material is Present Throughout Interior Wall and Ceiling Systems

RACM

Off-White Compound with Paint: 2% CH

Cream Tape: ND Off-White Joint Compound: 2%

CH

White Drywall with Brown

Paper: ND

4,000 sf

Hot Water Heater Asbestos Cement

Material is Limited to East End of the Attic Cat. II Gray Cementitious Material:

20% CH 12 sf

Grey Roof Penetration Patch

Material is Limited to the Exterior Roof Cat. I Black Mastic: 5% CH 2 sf

North Garage

Window Caulking Material is Limited on the East Elevation – Garage Space

Cat. II White Caulk: ND

Beige Caulk: 2% CH 1 sf

Office

Drywall with Joint Compound

Material is Present Throughout Interior Wall Systems of the Office Space and Restrooms

RACM

Off-White Compound with Paint: 2% CH

Cream Tape: ND Off-White Joint Compound: 2%

CH

White Drywall with Brown

Paper: ND

2700 sf

Window Caulking

Material is Limited to the Window Wood Frame to the Exterior Transite Siding

Cat. II Tan Caulk: 2% CH 3 sf

Transite Exterior Panels

Material is Present Throughout the Exterior Siding and Roof

Cat. II Grey Transite: 10% CH 3,200 sf

9” Tan Vinyl Floor Tile with Black

Mastic

Material is Limited in Room #2, Room#3, and Room #7.

Cat. I Tan Floor Tile: 2% CH

Black Mastic: ND 300 sf

Grey HVAC Sealant

Material is Present Throughout the Exterior Mounted HAVC System on the Exterior Roof

Cat. II Gray Sealant: 3% CH 8 sf

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Material Description

General Material Location(s)

Waste Category Asbestos Result Estimated

Quantity*

Large Warehouse

Grey Sealant Patch Material is Limited to the East Elevation – North End

Cat. I Grey Sealant: 7% CH 2 sf

Transite Walls and Ceiling Panels

Material is Limited to South Half of Building Walls and Exterior Roof

Cat. II Grey Transite: 15% CH 9,500 sf

Black Sealant Adjacent to 6” OD Transite Pipe Flue

Material is Limited on the South Side Elevation

Cat. II Black Sealant: 7% CH Tan Sealant: 3% CH

5 sf

6” OD Transite Pipe Flue

Material is Limited on the South Side Elevation

Cat. II Gray Transite:

10% CH & 2% CR 40 sf

Transite Exterior Corner Guard

Protector

Material is Limited on the Southwest Corner Cat. II Grey Transite: 15% CH 20 sf

ND = None Detected, NA = Not Applicable, CH = Chrysotile Asbestos, CR = Crocidolite Asbestos, RACM = Regulated asbestos containing material (friable), Cat. I = Non-friable (note ACM must be reclassified as a RACM if rendered friable during removal), Cat.

II = Category II Non-friable (note ACM must be reclassified as a RACM if rendered friable during removal), sf = square feet, lf = linear feet, *Estimated quantity should be field verified prior to abatement or abatement design

It should be reemphasized that although reasonable efforts were made to survey accessible suspect materials, additional suspect but un-sampled materials could be located under existing building materials, inside walls, above ceilings, in isolated areas or in other concealed areas.

Therefore, if suspect materials are encountered during abatement and/or demolition activities that do not appear to have been characterized as ACM or non-ACM, these materials must be assumed to be ACM until samples are collected and analyzed to prove otherwise. Any assumed material should be treated as asbestos or sampled to determine asbestos content before disturbing the material.

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Forty-four (44) additional suspect materials were sampled throughout the seven (7) affected structures but were not reported to contain asbestos in detectable quantities. The non-asbestos containing materials and sampling locations are listed in Table II, below.

Table II - Non-Asbestos Containing Materials Material Description Sampling Description

Residence

4” Yellow and White Ceramic Grout and Mortar Material Sampled at Kitchen Area

Black Vapor Barrier Material Sampled at Living Room Area – South Wall Cavity

Brown Vapor Barrier Material Sampled at Living Room Area – East Wall Cavity

Knob Tubes Electrical Wire Insulation Material Sampled at Attic Area

Pink Attic Insulation Material Sampled at Attic Area

4” Off-White Cove Base with Off-White Adhesive Material Sampled at Various Interior Wall Systems

4” Black Cove Base with Tan Adhesive Material Sampled at West Restroom Area

Sheet Flooring Systems (2 Layers) – Brown Vinyl Sheet Flooring with Square Pattern

Vinyl Sheet Flooring with Yellow Adhesive Material Sampled at Kitchen Area

Sheet Flooring System – Tan Vinyl Sheet Flooring with Black Squares with Yellow

Adhesive Material Sampled at West Restroom

Blue Ceramic Wall Tile with Grout and Plaster Wall System Material is Limited to West Restroom

White Window Sealant Material Sampled from Multiple Window Assemblies

Floor Tile Systems (2 layers) – 12” White Vinyl Floor Tile with Clear Adhesive with

Yellow Vinyl Floor Tile with Black and Brown Mastic Adhesive

Material is Limited to Kitchen Countertop

Sheet Flooring System – White Vinyl Sheet Flooring with tan Squares with Yellow

Adhesive Material is Limited to East Restroom

4” Light Green Ceramic Wall Tile with Grout, Plaster Wall System, and Black

Mastic Material is Limited to East Restroom Shower System

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Material Description Sampling Description

Brown and Black Vapor Barrier Material is Limited to East Restroom Shower Insert

Exterior Roof Shingles and Felt Paper

Material is Sampled at Exterior Roof **Side Note: The Entire Roof Shingle and Felt Field is Confirmed Clean; The ACM Grey Roof Penetration Mastic was Accidentally Inserted in Bulk Sample

19C.

Concrete Slab Material is Present at the Concrete Slab Foundation

Concrete – Sidewalk Material is Sampled at North Sidewalk Area

Brown and White Wallpaper with Adhesive Material is Limited in the Living Room Area

Water Tank Concrete Material is Limited at the Water Tank Valve

Concrete Planters Material is Limited at the Outside Fenced Areas

North Garage

Exterior Roof Shingle and Felt Material Sampled at Main Roofing Field System

Concrete Pad Material is Limited to North Elevation of Structure

Concrete Slab Material is Present at the Concrete Slab Foundation

Drywall System with No Joint Compound Material is Limited to North Wall System

Office

Concrete Slab Material is Present at the Concrete Slab Foundation

12” Brown Vinyl Floor Tile with Brown Mastic

Material is Limited in Room #4, Room #5, and Room #6

Concrete Sidewalk Material is Present at the Exterior Sidewalk Area

Concrete Planters Material is Present in Various Locations of the Exterior Area

White Patch on HVAC System Material is Limited in the Exterior Roof – HVAC Duct System

Black Patch on HVAC System Material is Limited in the Exterior Roof – HVAC Round Duct

Small Warehouse

Interior Wall System - Drywall with Joint Compound Material is Limited in the Office Space

Concrete Slab Material is Present at the Concrete Slab Foundation

Screwhead Washer Black Material is Present at Exterior Siding

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Material Description Sampling Description

White Caulk Material is Limited at South Elevation Window

Assemblies

Large Warehouse

East Concrete Pad Material is Limited on the East Elevation of Building

Concrete Slab Material is Present at Eastern Entry Area Porch

Concrete Footer Material Material is Limited to Warehouse Footer Assemblies

Drywall System with No Joint Compound Material is Limited to Large Warehouse – Mezzanine Area

West Concrete Pad Material is Limited on the West Elevation of Building

Shed

Black Vapor Barrier Material is Present Behind the Interior Wall System

Exterior Roof Shingles and Felt Material is Present at Exterior Roof

Concrete Slab Material is Present at the Concrete Slab Foundation

Concrete Ramp Material is Present at Shed Ramp

3.2 Lead Containing Paint and Bulk Materials

Thirty-seven (37) painted surfaces, four (4) ceramic tile glazing compounds and two (2) bulk building materials were sampled and analyzed for potential lead content during the survey. Of the items sampled, thirty-nine (39) were found to contain lead in concentrations in exceedance of the laboratory detection limit. The presence of lead containing materials was reported in each of the seven structures surveyed. A summary of lead sample locations and analytical results is below in Table III. Paint or materials reported with “<” is below the laboratory analytical reporting limit for the sample submitted.

Table III - Lead Containing Paints and Materials

Sample No. Material Description Sample Location Lead Concentration

Residence

Pb-01 White Paint on Exterior Wood Siding

Residence – South Elevation Exterior Wood Siding 8000 ppm

Pb-02 Yellow Paint on Interior Drywall System

Residence – East Entry at North Wall Adjacent to Kitchen 110 ppm

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Sample No. Material Description Sample Location Lead Concentration

Pb-03 Tan Paint on Interior Drywall System

Residence – Living Room North Wall 230 ppm

Pb-04 White Paint on Drywall Ceiling System

Residence – Center West Bedroom Ceiling 780 ppm

Pb-05 White Paint on Wood Door Frame

Residence – Kitchen at South Door Frame 440 ppm

Pb-06 White Paint on Wood Cabinet Residence – Kitchen Cabinet 1300 ppm

Pb-07 4” Yellow Ceramic Tile Cabinet Top

Residence – Kitchen Cabinet Top/Splash Guard 45 ppm

Pb-08 4” White Ceramic Tile Cabinet Top

Residence – Kitchen Cabinet Top/Splash Guard <40 ppm

Pb-09 4” Dark Blue Ceramic Wall Tile Residence – Bathtub Surround 67 ppm

Pb-10 4” Light Green Wall Tile Residence – East Restroom at Shower Surround <40 ppm

Pb-11 Brown Paint on Wood Window Frame

Residence – East Elevation Window Frame 5100 ppm

Pb-12 Green Paint on Wood Floor Residence – West Front at Enclosed Patio Floor 7500 ppm

Pb-21 White Paint on Wood Eave Residence – North Eave 29,000 ppm

North Garage

Pb-13 White Window Caulking North Garage – Window Assembly at Eastern Elevation 820 ppm

Pb-14 White Paint on Wood Door North Garage – North Door 2300 ppm

Pb-15 Green Paint on Window Wood Trim

North Garage – Window Assembly at East Elevation 4700 ppm

Pb-16 White Paint on Wood Roof North Garage – Roof Field at East Elevation 710 ppm

Pb-19 White Paint on Wood Eave System North Garage – South Eave 3900 ppm

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Sample No. Material Description Sample Location Lead Concentration

South Garage

Pb-17 White Paint on Metal Roof South Garage – Roof at South Elevation 1200 ppm

Pb-18 White Paint on Wood Door Frame

South Garage – North Door Frame 4800 ppm

Pb-20 White Paint on Metal Eave South Garage – North Eave 14,000 ppm

Office

Pb-22 White Paint on Wood Window Frame

Office – South Elevation at West End 4700 ppm

Pb-23 Off-White Paint on Drywall System Office – Room #7 at West Wall <44 ppm

Pb-24 White Paint on Wood Door Trim Office – South Elevation 18,000 ppm

Pb-25 Tan Window Caulking Office – West Window Assembly at South Elevation 13,000 ppm

Pb-26 White Paint on Metal Flagpole Office – Flagpole 150 ppm

Pb-27 Red Paint on Concrete Planters Office – Concrete Planters 61 ppm

Pb-28 Beige Paint on Metal Guards Office – Exterior Corner Metal Guards 110 ppm

Pb-29 Grey Metal HVAC Sealant Office – Exterior Roof at HVAC Unit Seam Sealant 3500 ppm

Small Warehouse

Pb-30 Green Paint on Drywall System Small Warehouse – Office at South Wall 100,000 ppm

Pb-31 White Paint on Drywall System Small Warehouse – Office at South Wall 210 ppm

Pb-32 White Paint on Metal Warehouse Door Small Warehouse – East Door 200 ppm

Pb-33 Grey Paint on Metal Office Door Small Warehouse – Office Door Exit 780 ppm

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Sample No. Material Description Sample Location Lead Concentration

Pb-42 White Caulk on Metal Window Frame to Exterior Siding

Small Warehouse – Window Assembly at South Elevation 73 ppm

Large Warehouse

Pb-34 White Paint on Metal Ballard Large Warehouse – East Elevation 45 ppm

Pb-35 Red Paint on Metal Edge Protector

Large Warehouse – East Elevation 62,000 ppm

Pb-36 Red Paint on Metal Door Large Warehouse – Interior Door 99 ppm

Pb-37 Grey Paint on Metal Building Column

Large Warehouse – North Center Area 290 ppm

Pb-38 Grey Paint on Metal Rollup Door Frame Large Warehouse – East Door 44,000 ppm

Shed

Pb-40 Beige Paint on Exterior Wood Siding Shed – South Elevation <46 ppm

Pb-41 Beige Paint on Exterior Wood Eave Shed – Eave at East Elevation <40 ppm

Green Island Site

Pb-39 Beige Paint on Metal Post Green Island Site – Large Fence at West End of Site (Fence Runs from East to West)

220 ppm

Pb-43 Grey Paint on Metal Plank Green Island Site – Large Fence at Horizontal Metal Plank <46 ppm ppm = parts per million

Uncharacterized paints and/or suspect materials should be assumed to contain lead until sampling and analysis prove otherwise.

3.3 Other Hazardous Building Materials

Terracon visually assessed the buildings for the presence of mercury containing products such as fluorescent light tubes, HID bulbs, mercury switches, thermometers, and compact fluorescent light bulbs. Mercury-containing tubes, bulbs, switches, and thermometers should be removed from the

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Select lighting ballasts were inspected for labeling indicating the absence of PCBs. Ballasts observed were labeled as non-PCB ballasts. All ballasts should be inspected prior to disposal to verify the presence/absence of PCBs. Ballasts should be assumed to be PCB-containing unless specified by the manufacturer’s label as containing “No PCBs”.

Terracon visually inspected equipment with potential chlorofluorocarbon (CFC) or hydrochlorofluorocarbon (HCFC) refrigerants. No testing was performed, and no units were observed, however all refrigerant systems should be verified prior to disconnection; lubricating fluids and refrigerant must be reclaimed for recycling or destruction prior to removal of the equipment.

4.0 CONCLUSIONS

Based upon the survey results, Terracon concludes the following:

Fifteen (15) of the fifty-nine (59) materials sampled during the course of the survey were reported to contain asbestos in concentrations exceeding the laboratory method limit of detection.

Estimated quantities provided are for information purposes only and are not intended to serve as the basis for any sort of contractor abatement bid.

If additional suspect materials that have not been characterized as ACM or non-ACM in this report are discovered during construction related processes, these materials should be assumed to contain asbestos and be treated accordingly until proven otherwise by appropriate sampling and laboratory analysis.

Lead was detected above the laboratory detection limit in thirty-nine (39) of the forty-three

(43) materials sampled, including various paints, glazing compounds and sealants.

Additional hazardous building materials, such as mercury containing florescent light fixtures and associated suspect PCB-containing ballasts were observed throughout the referenced structures.

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5.0 REGULATORY OVERVIEW

5.1 Asbestos

The Asbestos NESHAP program in California is enforced by federal, state, and county Asbestos NESHAP Coordinators.

The asbestos NESHAP (40 CFR Part 61, Subpart M) regulates asbestos fiber emissions and asbestos waste disposal practices. The asbestos NESHAP regulation also requires the identification and classification of existing ACM according to friability prior to demolition or renovation activity. Friable ACM is a material containing more than 1% asbestos that, when dry, can be crumbled, pulverized or reduced to powder by hand pressure. All friable ACM is considered regulated asbestos-containing material (RACM). The NESHAP regulation is implemented locally by the BAAQMD in their Regulation 11, Rule 2.

The asbestos NESHAP regulation classifies ACM as either RACM, Category I non-friable ACM or Category II non-friable ACM. RACM includes all friable ACM, along with Category I and Category II non-friable ACM that has become friable, will be or has been subjected to sanding, grinding, cutting, or abrading, or ACM that has a high probability of becoming or has become crumbled, pulverized, or reduced to powder in the course of renovation or demolition activity.

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

The California Department of Occupational Safety and Health (DOSH) asbestos standard for construction (Title 8 CCR 1529) regulates workplace exposure to asbestos. The DOSH standard requires that employee exposure to airborne asbestos must not exceed 0.1 fibers per cubic centimeter of air (0.1 f/cc) as an eight-hour time weighted average (TWA) and not exceed 1.0 fibers per cubic centimeter of air (1.0 f/cc) over a 30-minute time period known as an excursion limit (EL). The TWA and EL are known as DOSH’s asbestos permissible exposure limits (PELs).

The DOSH 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.

5.2 Lead Containing Paint/Materials

Personnel performing demolition activities that may disturb painted components or materials with concentrations of lead above the designated analytical detection limit should comply with all current DOSH regulations in order to minimize employee exposure. DOSH defines lead containing paint as a paint, which contains lead, regardless of the concentration. Currently, any proposed renovation/demolition is subject to the DOSH regulations (Title 8 CCR 1532.1 – Lead Exposure in

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Construction). The DOSH 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 DOSH Lead Exposure in Construction standard.

Construction work covered by Title 8 CCR 1532.1 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 DOSH Standard also establishes an action level of 30 g/m3 which if exceeded triggers the requirement for medical monitoring.

Proper waste stream categorization is required for the disposal of all lead containing materials and painted construction debris with total lead content that exceeds 50 ppm. The debris should be classified as hazardous waste if lead waste concentrations exceed either the total lead concentration or soluble lead concentration regulatory limits. Total lead concentration is determined by Total Threshold Limit Concentration (TTLC). Soluble or leachable lead is determined by the Soluble Threshold Limit Concentration (STLC, California required test) and/or Toxicity Characteristic Leaching Procedure (TCLP) (Federal EPA required test). Regulatory limits characterize a lead waste as a hazardous waste if lead concentrations exceed 1,000 ppm by TTLC or 5 milligrams per liter by STLC or TCLP.

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 containing paints.

5.3 Refrigerants

The use, management, and release of ozone depleting substances used as refrigerants are regulated under the Clean Air Act (CAA) of 1990. Section 608 of the CAA forbids the venting of regulated refrigerants such as chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC), and blended refrigerants. If they are present, all regulated refrigerants associated with the buildings and equipment must be recovered prior to severing pressurized systems or disposal of equipment.

5.4 Universal Waste

Universal waste are common wastes with hazardous properties that must be managed and have landfill disposal restrictions. Example of universal waste include electronic devices, batteries, and mercury containing equipment or lighting. Handling, transportation, and disposal is simplified under the universal waste regulation in the California Code of Regulations Title 22, Division 4.5

September 6, 2023 ■ Terracon Project No. R120P020

Responsive ■ Resourceful ■ Reliable 17

Chapter 11.

All materials in the buildings meeting the definition of the universal waste must be removed prior to demolition and handled, transported and disposed through an appropriate vendor.

6.0 LIMITATIONS / GENERAL COMMENTS

Terracon performed limited destructive testing such as selective demolition of walls, dismantling of equipment or removal of protective coverings during the survey. Uncharacterized hidden materials may exist under existing finishes, equipment, or structural materials.

This hazardous materials survey 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 at the subject site.

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 AMCAL Multi-Housing, Inc. for specific application to their project as discussed. 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. 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.

Appendix 1:

Laboratory Results and Chain of Custody - Asbestos

Approved by:

Approved Signatory Ahmed Fageer

Report for:

Ms. Karin Schroeter Terracon Consultants, Inc.-Oakland 1220 Concord Avenue Suite 450 Concord, CA 94520

Regarding:

Eurofins EPK Built Environment Testing, LLC Project: R120P020-19A; Task 19A- Napa Sonoma Green Island Unit

EML ID: 3309999

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

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

Dates of Analysis:

Asbestos PLM: 07-07-2023

Service SOPs: Asbestos PLM (EPA 40CFR App E to Sub E of Part 763 & EPA METHOD 600/R-93-116, SOP EM-AS-S-1267) NVLAP Lab Code 500034-0

EMLab ID: 3309999, Page 1 of 25Eurofins EPK Built Environment Testing, LLC

Eurofins EPK Built Environment Testing, LLC 8304 Clairemont Mesa Blvd, Suite 103, San Diego, CA 92111

(800) 651-4802 www.eurofinsus.com/BuiltClient: Terracon Consultants, Inc.-Oakland C/O: Ms. Karin Schroeter Re: R120P020-19A; Task 19A- Napa Sonoma Green Island Unit

Date of Sampling: 06-28-2023 Date of Receipt: 07-05-2023 Date of Report: 07-07-2023

ASBESTOS PLM REPORT

Total Samples Submitted: 88 Total Samples Analyzed: 88

Total Samples with Layer Asbestos Content > 1%: 17

Location: 1A, Drywall/Joint Comp, R- NE Restroom Corner Lab ID-Version‡: 16086742-1

Sample Layers Asbestos Content Off-White Compound with Paint 2% Chrysotile

Cream Tape ND Off-White Joint Compound 2% Chrysotile

White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos

Composite Non-Asbestos Content: 15% Cellulose Sample Composite Homogeneity: Poor

Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines.

Location: 1B, Drywall/Joint Comp, R- SW Corner- Guest Room Lab ID-Version‡: 16086743-1

Sample Layers Asbestos Content Off-White Compound with Paint 2% Chrysotile

Cream Tape ND Off-White Joint Compound 2% Chrysotile

White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos

Composite Non-Asbestos Content: 15% Cellulose Sample Composite Homogeneity: Poor

Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines.

Location: 1C, Drywall/Joint Comp, R- Living Room- SW Corner Lab ID-Version‡: 16086744-1

Sample Layers Asbestos Content Off-White Compound with Paint 2% Chrysotile

Cream Tape ND Off-White Joint Compound 2% Chrysotile

White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos

Composite Non-Asbestos Content: 15% Cellulose Sample Composite Homogeneity: Poor

Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines.

EMLab ID: 3309999, Page 2 of 25Eurofins EPK Built Environment Testing, LLC

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

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

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

(800) 651-4802 www.eurofinsus.com/BuiltClient: Terracon Consultants, Inc.-Oakland C/O: Ms. Karin Schroeter Re: R120P020-19A; Task 19A- Napa Sonoma Green Island Unit

Date of Sampling: 06-28-2023 Date of Receipt: 07-05-2023 Date of Report: 07-07-2023

ASBESTOS PLM REPORT

Location: 1D, Drywall/Joint Comp, R- West Restroom- NE Corner Lab ID-Version‡: 16086745-1

Sample Layers Asbestos Content Off-White Compound with Paint 2% Chrysotile

Cream Tape ND Off-White Joint Compound 2% Chrysotile

White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos

Composite Non-Asbestos Content: 15% Cellulose Sample Composite Homogeneity: Poor

Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines.

EMLab ID: 3309999, Page 3 of 25Eurofins EPK Built Environment Testing, LLC

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

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

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

(800) 651-4802 www.eurofinsus.com/BuiltClient: Terracon Consultants, Inc.-Oakland C/O: Ms. Karin Schroeter Re: R120P020-19A; Task 19A- Napa Sonoma Green Island Unit

Date of Sampling: 06-28-2023 Date of Receipt: 07-05-2023 Date of Report: 07-07-2023

ASBESTOS PLM REPORT

Location: 1E, Drywall/Joint Comp, R- West Porch- North West Corner Lab ID-Version‡: 16086746-1

Sample Layers Asbestos Content White Joint Compound with Paint ND

White Woven Material (Mesh) ND White Drywall with Brown Paper ND

Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor

Location: 2A, Texture, R- Living Room- North Wall Lab ID-Version‡: 16086747-1

Sample Layers Asbestos Content White Drywall with Brown Paper and Paint ND

Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor

Location: 2B, Texture, R- West Bedroom- SW Corner Lab ID-Version‡: 16086748-1

Sample Layers Asbestos Content Off-White Compound with Paint 2% Chrysotile

Cream Tape ND Off-White Joint Compound 2% Chrysotile

Brown Paper (Trace) ND Composite Non-Asbestos Content: 15% Cellulose Sample Composite Homogeneity: Poor

Location: 2C, Texture, R- West Bedroom- Ceiling Lab ID-Version‡: 16086749-1

Sample Layers Asbestos Content Off-White Joint Compound with Paint 2% Chrysotile

White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos

Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor

Comments: Composite content provided for this analysis has been performed by following the NESHAP guidelines.

EMLab ID: 3309999, Page 4 of 25Eurofins EPK Built Environment Testing, LLC

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

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

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

(800) 651-4802 www.eurofinsus.com/BuiltClient: Terracon Consultants, Inc.-Oakland C/O: Ms. Karin Schroeter Re: R120P020-19A; Task 19A- Napa Sonoma Green Island Unit

Date of Sampling: 06-28-2023 Date of Receipt: 07-05-2023 Date of Report: 07-07-2023

ASBESTOS PLM REPORT

Location: 2D, Texture, R- Living Room Ceiling Lab ID-Version‡: 16086750-1

Sample Layers Asbestos Content Off-White Joint Compound with Paint 2% Chrysotile

White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos

Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor

Comments: Composite content provided for this analysis has been performed by following the NESHAP guidelines.

Location: 2E, Texture, R- West Center Bedroom Ceiling Lab ID-Version‡: 16086751-1

Sample Layers Asbestos Content Off-White Joint Compound with Paint 2% Chrysotile

White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos

Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor

Comments: Composite content provided for this analysis has been performed by following the NESHAP guidelines.

Location: 3A, 4" Yellow and White Ceramic Grout and Mortar, R- Kitchen Lab ID-Version‡: 16086752-1

Sample Layers Asbestos Content White Ceramic Tile ND

Gray Mortar ND Gray Grout ND

Sample Composite Homogeneity: Moderate

Location: 3B, 4" Yellow and White Ceramic Grout and Mortar, R- Kitchen Lab ID-Version‡: 16086753-1

Sample Layers Asbestos Content White Ceramic Tile ND

Gray Mortar ND Gray Grout ND

Sample Composite Homogeneity: Moderate

EMLab ID: 3309999, Page 5 of 25Eurofins EPK Built Environment Testing, LLC

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

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

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

(800) 651-4802 www.eurofinsus.com/BuiltClient: Terracon Consultants, Inc.-Oakland C/O: Ms. Karin Schroeter Re: R120P020-19A; Task 19A- Napa Sonoma Green Island Unit

Date of Sampling: 06-28-2023 Date of Receipt: 07-05-2023 Date of Report: 07-07-2023

ASBESTOS PLM REPORT

Location: 3C, 4" Yellow and White Ceramic Grout and Mortar, R- Kitchen Lab ID-Version‡: 16086754-1

Sample Layers Asbestos Content White Ceramic Tile ND

Gray Mortar ND…