26-727 Class 30 - Cat Ex - 716 W Kearney Draft — Fresno City Council, June 25, 2026 (part 1 of 2)

CITY OF FRESNO

CATEGORICAL EXEMPTION
ENVIRONMENTAL ASSESSMENT APPLICATION NO. P26-00224

THE PROJECT DESCRIBED HEREIN IS DETERMINED TO BE CATEGORICALLY

EXEMPT FROM THE PREPARATION OF ENVIRONMENTAL DOCUMENTS
PURSUANT TO ARTICLE 19 OF THE STATE CEQA GUIDELINES.

APPLICANT: David Densley
City of Fresno Planning & Development Department
2600 Fresno Street, Room 3076
Fresno, CA 93721

PROJECT LOCATION: 716 West Kearney Boulevard; Located on the north side of West Kearney Boulevard between South Thorne and South Teilman Avenues (APN: 464-220-43T)

PROJECT DESCRIPTION: The project involves hazardous material abatement of an existing hangar and removal of lead- impacted soils from 3.34 acres of the subject property . Actions will include asbestos abatement, lead- based paint abatement, and excavation and offsite disposal of contaminated soil. The City will approve a loan agreement to fund the proposed project.

This project is exempt under Section 15330/Class 30 of the California Environmental Quality Act (CEQA) Guidelines as follows:

Under Section 15330/Class 30, the proposed project is exempt from CEQA requirements when the project consists of any minor cleanup actions taken to prevent, minimize, stabilize, mitigate, or eliminate the release or threat of release of a hazardous waste or substance which are small or medium removal actions costing $1 million or less.

a) No cleanup action shall be subject to this Class 30 exemption if the action requires the onsite use of a hazardous waste incinerator or thermal treatment unit or the relocation of residences or businesses, or the action involves the potential release into the air of volatile organic compounds as defined in Health and Safety Code Section 25123.6, except for small scale in situ soil vapor extraction and treatment systems which have been permitted by the local Air Pollution Control District or Air Quality Mana gement District. All actions must be consistent with applicable state and local environmental permitting requirements including, but not limited to, off -site disposal, air quality rules such as those governing volatile organic compounds and water quality standards, and approved by the regulatory body with jurisdiction over the site.

b) Examples of such minor cleanup actions include, but are not limited to, excavation and/or offsite disposal of contaminated soils or sludges in regulated units.

The proposed project will approve a loan agreement between the Planning & Development Department and the Airports Department in the amount of $385,500 to complete environmental contaminant abatement at an existing hangar within the Fresno Chandler Executive Airport.

Cleanup actions will include the complete abatement of asbestos and lead- based paint, combined with the excavation and off-site disposal of lead-impacted soil. Remediation activities do not include the use of a hazardous waste incinerator or thermal treatment unit, no residences or businesses will be displaced or relocated, and volatile organic compounds will not be released into the air as a result of cleanup activities. The City will require a Construction Safety Plan prior to the initiation of abatement activities, and the contractor must maintain compliance with Occupation Safety and Health Administration (OSHA) regulations at all times.

Approximately 140 cubic yards of lead-impacted soils will be excavated and removed as part of the cleanup action. As outlined in the Cleanup Work Plan prepared by Stantec Consulting Services (Exhibit A), the contractor will be responsible for removing the upper three feet of soil to minimize the potential for direct exposure to lead in the soil. Impacted soils are to be removed with standard earthmoving equipment and will be pre-profiled for disposal at the receiving landfill.

None of the exceptions to Categorical Exemptions set forth in the CEQA Guidelines, Section 15300.2 apply to the project. The subject property is not located on a hazardous waste site included on any list compiled to Government Code Section 65962.5. Also, the proposed project was reviewed by the State Historic Preservation Officer and in the attached letter dated May 1, 2026 (Exhibit B), made its finding of no historic properties affected. Furthermore, the proposed project is not expected to have a significant effect or cumulative effect on the environment.

Therefore, a categorical exemption has been prepared for the proposed project.

Date: May 6, 2026

Prepared By: Chris Lang, Supervising Planner

Submitted by:

Chris Lang
Supervising Planner
City of Fresno
Planning & Development
Department
(559) 621-8023

Attachments:

Exhibit A – Cleanup Work Plan
Exhibit B – Office of Historic Preservation Memo dated May 1, 2026

Cleanup Work Plan
Stantec Consulting Services Inc.

Prepared for:

City of Fresno
Prepared by:

Stantec Consulting Services, Inc.

April 17, 2026
Project/File: 203724380

Chandler Airport, 716 West Kerney Boulevard, Fresno, California

Sign-off Sheet and Signatures of Environmental Professionals Project: 203724380

This document entitled Hazardous Building Materials Work Plan (Work Plan), Chandler Airport, 716 West Kerney Boulevard, Fresno, California, was prepared by Stantec Consulting Services Inc. (“Stantec”) for the account of the City of Fresno (the “Client”). The requirements detailed herein represent Stantec’s professional opinion, as of the time of the Work Plan, and concerning the scope described in the Work Plan.

The document is based on conditions and information existing at the time the Work Plan was prepared and does not take into account any subsequent changes. The Work Plan relates solely to the specific project for which Stantec was retained and the stated purpose for which the Work Plan was prepared. The Work Plan is not to be used or relied on for any variation or extension of the project, or for any other project or purpose, and any unauthorized use or reliance is at the recipient’s own risk.

Stantec has assumed all information received from the “Client” and third parties in the preparation of the Work Plan to be correct. While Stantec has exercised a customary level of judgment or due diligence in the use of such information, Stantec assumes no responsibility for the consequences of any error or omission contained therein.

This Work Plan is intended solely for use by the Client in accordance with Stantec’s contract with the Client.

While the Work Plan may be provided to applicable authorities having jurisdiction and others for whom the Client is responsible, Stantec does not warrant the services to any third party.

Author:

Kristin Stout
Project Manager
Quality Reviewer:

Doug Weaver
Project Manager

Independent Reviewer:

Graeme Taylor
Principal

Project: 203724380 i

Table of Contents
Executive Summary ..................................................................................................................... iii 1 Introduction .......................................................................................................................... 1

1.1 Subject Property Location and Description ........................................................................ 1

1.2 Subject Property History .................................................................................................... 1

1.3 Analysis of Brownfield Cleanup Alternatives (ABCA) ......................................................... 3 2 Construction Safety Plan and Pre-Mobilization Submittals ........................................... 5 3 ACM and LBP Scope of Work ............................................................................................. 6

3.1 Designated Supervisor/Safety Person ............................................................................... 8

3.2 Emergency Response and Evacuation Procedures ........................................................... 8

3.3 Notifications ....................................................................................................................... 9

3.4 Personal Protective Equipment (PPE) ............................................................................... 9

3.5 Work Plan Procedures ..................................................................................................... 10

3.5.1 Utility Disconnections and Lock-Out-Tag-Out ................................................... 10

3.5.2 Work Area Preparation ..................................................................................... 10

3.5.3 Water Service ................................................................................................... 12

3.5.4 Negative Pressure System ............................................................................... 13

3.6 Asbestos Abatement Methods ......................................................................................... 13

3.6.1 Door Window Putty ........................................................................................... 14

3.6.2 Roofing Materials .............................................................................................. 14

3.6.3 Flooring Materials ............................................................................................. 15

3.6.4 Drywall with Joint Compound (Blue) ................................................................. 15

3.6.5 Texture Coat ..................................................................................................... 16

3.6.6 Drywall with Joint Compound ........................................................................... 16

3.6.7 Sprayed on Acoustical Ceiling .......................................................................... 16

3.6.8 Electrical Switch Blocks .................................................................................... 17

3.6.9 Waste Handling and Disposal ........................................................................... 17

3.6.10 Transportation of Hazardous Waste Material (Lead-Based Paint) .................... 18

3.6.11 Equipment Operation ........................................................................................ 18

3.6.12 Fall Protection ................................................................................................... 18

3.6.13 Corrective Action Plan – Dust & Debris Control Measures ............................... 19

3.6.14 Air Monitoring ................................................................................................... 19

3.6.15 Decontamination Procedure ............................................................................. 20

3.6.16 Signage ............................................................................................................ 21

3.6.17 Disposal – Packaging & Labeling ..................................................................... 21

3.6.18 Visual Inspections / Air Monitoring Clearances ................................................. 22 4 Lead Impacted Soils Scope of Work ............................................................................... 24

4.1 Permitting......................................................................................................................... 24

4.2 Utility Clearance ............................................................................................................... 24

Project: 203724380 ii

4.3 Soil Excavation ................................................................................................................ 24

4.4 Soil Backfill ...................................................................................................................... 25

4.5 Control Measures ............................................................................................................ 25

4.6 Responsibilities of the Contractor .................................................................................... 26 5 Post-Job Submittals .......................................................................................................... 28 6 Airport Security and FAA Requirements ........................................................................ 30 References ................................................................................................................................... 31

FIGURES:

Figure 1 - Property Location Map
Figure 2 - Property Layout and Routing
Figure 3 - Property Area Map
Attachments

Attachment 1 - Asbestos and Lead Paint Survey
Attachment 2 - Draft Phase II Environmental Site Assessment

Project: 203724380 iii

Executive Summary
Stantec Consulting Services Inc. (Stantec) has prepared a Cleanup Work Plan (Work Plan) for the property located at Chandler Airport, 716 West Kearney Boulevard, Fresno, California (the “Site” or the “Subject Property”), on behalf of the City of Fresno (the “City” and “Client”). The work was performed according to Stantec’s contracting terms and conditions, as well as the Client’s USEPA Brownfield Assessment Cooperative Agreement 4B98T50501. The City has been designated as the User of this Work Plan. The intended use of this Work Plan is for the solicitation of bids and the performance of the work described within.

The Subject Property is comprised of a 3.34-acre portion of a larger 55.860-acre parcel of land (Assessor Parcel Number [APN] 646-220-43T) which is part of the Fresno Chandler Executive Airport, a regional airport. The Site is currently improved with a Fuselage Trainer (FUT) hangar building with an assigned address of 716 West Kearney Boulevard. The building is approximately 11,000 square feet in size and was built in 1948 (Group Delta 2024a).

We have prepared this Work Plan based upon the results of the Asbestos and Lead-Based Paint Survey and Phase I Environmental Site Assessment (ESA) completed in December 2024 by Group Delta (Group Delta 2024b) and a Phase II ESA completed by Group Delta in May 2025 (Group Delta 2025). The selected contractor shall be responsible for inspecting the Site to confirm the scope of work. Any quantities listed in this Work Plan or the surveys are done so as approximation. Confirmation of the actual quantities of hazardous materials present and requiring abatement/excavation is the responsibility of the contractor.

Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
Introduction
Project: 203724380 1

1 Introduction
The objective of this Work Plan is to provide guidance to contractors preparing bids for the abatement of asbestos containing materials (ACM), proper management of lead-based paint (LBP), and excavation and off-site disposal of lead-impacted soil as part of planned renovations of the building at the referenced Site.

This Work Plan is based on the reports of ACM and LBP surveys, Phase I ESA and Phase II ESA performed by Group Delta, Inc. (Group Delta) in December 2024 and May 2025, respectively.

1.1 Subject Property Location and Description
The Subject Property is comprised of a 3.34-acre portion of a larger 55.86-acre parcel of land (Assessor Parcel Number [APN] 646-220-43T) which is part of the Fresno Chandler Executive Airport, a regional airport. The Site is currently improved with a Fuselage Trainer (FUT) hangar building with an assigned address of 716 West Kearney Boulevard. The building is approximately 11,000 square feet in size and was built in 1948 (Group Delta 2024a). A general location map is provided as Figure 1. A map depicting the exclusions zone, staging area, and haul zones is provided as Figure 2. A map illustrating the main features of the Subject Property is provided as Figure 3.

1.2 Subject Property History
In December 2024, Group Delta completed a Phase I Environmental Site Assessment (ESA) to document environmental conditions on the Subject Property. At the time of the assessment the Subject Property building was unoccupied. Based on a review of historical sources, the Subject Property appeared to be part of the Fresno Chandler Executive Airport since at least 1937. The Subject Property appeared to be in use as aircraft parking, a taxiway and undeveloped land from at least 1937 until approximately 1946, when a hangar and associated storage buildings appear to have been developed. According to historical city directories, the building was occupied by several tenants including Lambe Piper Aircraft Sales, Ruiz Frank X Avionics, Buchner Aero Specialties, and Tom’s Flying Service. Group Delta identified three recognized environmental conditions (RECs) associated with the Subject Property (Group Delta 2024a), summarized below.
• REC1 - A letter issued by the County of Fresno Department of Health to the City of Fresno dated August 29, 1991, confirmed the completion of a site inspection and/or remedial action regarding the release of hazardous substances or waste in relation to underground storage tanks (USTs).

No further action was required, and UST closure documentation does not include documentation indicating the presence or absence of a petroleum discharge. • REC2 - Evidence of an exterior wash down area with a drain and single-chamber oil/water separator (OWS) was observed adjacent to the west side of the hangar building. The installation date of the washdown area and drain is unknown. The OWS drain is used to collect washdown water and separates oil, sludge, and debris collected into the drain prior to entering the municipal sewer system. The potential exists that the OWS may be breached, allowing oil and sludge to leak into subsurface media.

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Introduction
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• REC3 - Evidence of a spray booth was observed within the interior northwestern portion of the hangar building. The installation date of the spray booth is unknown. An oil stain was observed on the floor of the spray booth, and an oily odor was noted.

Group Delta also identified two ‘other environmental considerations’ (OECs) which are items of environmental interest that do not qualify as a REC but warrant further discussion:
• OEC1 – Group Delta completed a lead-based paint (LBP) survey to assess for lead in building materials and to document concentrations of lead within the paint. Samples were collected from various interior and exterior areas that may be impacted by renovation/demolition. The survey results confirmed the presence of LBP at the hangar. The final survey report is provided in Appendix A.
• OEC2 - Group Delta completed an asbestos survey to assess potential asbestos-containing materials (ACM) for the presence of asbestos and the relative concentrations where present. The survey results confirmed that ACM was present in nine samples analyzed at the hangar. The final survey report is provided in Appendix A.

Group Delta recommended obtaining additional documentation regarding the historical on-site UST, including the former UST location, subsequent removal, and associated remedial activities. In addition, Group Delta recommended a limited subsurface investigation (soil and/or soil vapor sampling) in the area of the former UST, a limited subsurface investigation (soil and soil vapor sampling) to assess the shallow soil conditions in the areas of the OWS and spray booth at 716 West Kearney Boulevard, and assessment of lead in soil sourced from lead-based paint in areas of exposed soil based on the lead X- ray Fluorescence (XRF) results (Group Delta 2024b).

Based on the findings of the Phase I ESA, Group Delta conducted a Phase II ESA to evaluate the RECs and the potential presence of lead in soil. Based on the anticipated future use as an educational facility, Group Delta expanded the investigation to evaluate potential soil impacts from organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in accordance with guidance published by California Department of Toxic Substances Control (DTSC). The investigation included soil vapor sampling to assess the potential presence of volatile organic compound (VOCs) and evaluate the potential for vapor intrusion from soil vapor into indoor air. A copy of the Phase II ESA report is provided in Appendix B.

Two soil borings were advanced on either side of the wash down drain OWS, two soil borings were advanced within the paint booth area, six soil borings were advanced along the south and east sides of the hangar building, and two soil borings were advanced on each side of the pole-mounted stepdown transformer servicing the Subject Property. Soil borings were advanced to 5 feet below ground surface (ft bgs) with samples collected at 0.5, 1.0, 1.5, and 5.0 ft bgs. Eight soil borings were advanced inside and outside the hangar building for the installation of dual nested soil vapor probes (SV-1 through SV-8) at depths of 5 and 10 feet bgs.

The only soil samples exceeding regulatory screening levels were those analyzed for total lead that were collected within the dripline of the existing hangar building. Five of the twelve samples collected within the dripline exceed the DTSC Screening Level (SL) of 80 milligrams per kilogram (mg/kg) for unrestricted site Cleanup Work Plan
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Introduction
Project: 203724380 3

use. Based on soluble lead concentrations, several of the soil samples would qualify as California hazardous waste if the soils were excavated (Group Delta 2025). Stantec developed a preliminary estimate of the potential volume of lead-impacted soil based on the impacted area depicted on the Group Delta Soil Sample Location Map and assuming concentrations exceeding the DTSC SL (80 mg/kg) extend to an average depth of 3 feet bgs. This estimated volume is 3,780 cubic feet or 140 cubic yards.

This would equal approximately 210 tons (assuming an average soil density of 1.5 tons per cubic yard).

1.3 Analysis of Brownfield Cleanup Alternatives (ABCA)
An Analysis of Brownfield Cleanup Alternatives (ABCA) was prepared for the City on January 6, 2026, which evaluated four cleanup alternatives for effectiveness, ability to implement, costs, and green remediation considerations (Stantec 2026). The recommended cleanup alternative chosen was Alternative #4, Complete Abatement of ACM and LBP and Excavation and Off-Site Disposal of Impacted Soil.

The complete abatement alternative includes the following activities to address hazardous building materials:

1. Permitting and notifications for ACM and LBP abatement activities.

2. Site preparation by establishing security fencing, drop boxes, decontamination areas, appropriate containment, barrier, and air -filtration systems and other work area preparations necessary for workers in appropriate protective clothing to work in areas where RBMs are present.

3. Abating known ACM in other areas of the building.

4. Disposing of waste at an appropriately licensed landfill under applicable waste manifests at a facility that can receive ACM and LBP impacted building materials.

This alternative includes the following activities to address lead-impacted soils:

Excavation and disposal of the area where lead is present at concentrations exceeding 80 mg/kg. During excavation, soil would be scanned using an XRF device and separated and stockpiled according to whether it is anticipated to be classified as a non-hazardous waste, a RCRA-hazardous waste, or a California non-RCRA hazardous waste based on previous sampling data. Prior to disposal, the waste classifications would be confirmed via waste characterization sampling conducted at the direction of the selected disposal facility.

Based on the available data, it is estimated that a total of 140 cubic yards of soil would be excavated and disposed of off-site. Soils in the areas south and east of the building would be excavated to 3 feet bgs.

Due to the inherent uncertainty of the previous environmental investigation, it was assumed that all the soil removed will be classified as California non-RCRA hazardous waste. A 10% contingency was applied to the estimated volume.

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Introduction
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This work plan has been divided into separate sections, Section 2.0 addressing the ACM and LBP abatement and Section 3.0 addressing the lead impacted soil excavation.

Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
Construction Safety Plan and Pre-Mobilization Submittals Project: 203724380 5

2 Construction Safety Plan and Pre-Mobilization
Submittals
The City will require a Construction Safety Plan and other submittals prior to mobilizing to initiate abatement and cleanup activities. The following details must be incorporated into the Contractor’s work planning and provided to the City prior to project initiation. Construction Safety Plan – Contractor must prepare a Construction Safety Plan to maintain a safe, clean, and compliant jobsite at all times in accordance with Occupational Safety and Health Administration (OSHA), local building codes, and project-specific requirements. This includes all hazards (open trenches, overhead work, electrical work, etc.) must be clearly marked, barricaded, or mitigated; Contractor responsible for maintaining safe storage of materials, tools, fuel, and chemicals; daily cleanup is required; no debris or materials may obstruct walkways or exits; and construction areas must remain organized, with materials safely stacked or secured. All subcontractors must follow the Contractors’ safety protocols and participate in daily/weekly safety meetings.

Pre-mobilization submittals – Prior to mobilization, the Contractor must submit the Construction Safety Plan, Air Monitoring Plan consistent with the requirements listed in Section 2.6.14, Waste Disposal Plan with the requirements listed in Section 2.6.17 and 3.6, Fall Hazard Assessment / Written Plan with the requirements listed in Section 2.6.12, training certs, subcontractor list, and insurance to the City.

Designated Staging Area – The City can provide a designated location for a laydown/staging yard, but storage of equipment will be at the Contractor’s risk. A map depicting the preliminary storage/staging area is included in Figure 2.

Access, Routing and Path of Travel Coordination – All routing plans and/or construction staging yard layout with dimensions must be submitted to the Project Administrator for review before implementation.

Routing must maintain clear access to emergency exits, Americans with Disabilities Act (ADA) compliant pathways, fire lanes, and building operations. Work zones must be clearly barricaded and marked with appropriate signage. Deliveries, materials staging, and equipment movement must follow approved routes and scheduled times to avoid impacting occupants, operations, or traffic. A map depicting the preliminary routing plan is included in Figure 2.

Federal Aviation Administration (FAA) requirements: Contractor must adhere to FAA requirements at all times while working on the Subject Property. These provisions are described in Section 6.

Look Ahead: A daily or weekly look-ahead schedule must be provided to support coordination with building operations.

Changes: The Contractor must notify the Airports Project Administrator of any changes in work sequencing, routing, or safety conditions.

Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
ACM and LBP Scope of Work
Project: 203724380 6

3 ACM and LBP Scope of Work
Abatement activities must be performed in accordance with all applicable local, state, and federal regulations governing the abatement and management of ACMs and LBP, as well as the removal of lead‑impacted soils.

Additional hazardous materials may be uncovered when performing structural and component demolition that were not accessible during the original surveys. If additional suspect materials are discovered during work at the Site, additional sampling and analysis will be required to ensure that all hazardous materials are properly identified and removed as a part of this project.

Due to the quantity of asbestos identified during the survey, the abatement contractor must submit a 10- calendar day asbestos notification to San Joaquin Valley Air Pollution Control District (SJVAPCD), as well as a courtesy 24-hour asbestos notification to the California Department of Industrial Relations – Division of Occupational Health and Safety (Cal/OSHA).

The abatement contractor assumes responsibility for the overall implementation of this Work Plan. Prior to the start of the project, the abatement contractor will designate a certified Asbestos Supervisor to serve as the individual with primary responsibility to ensure the Work Plan is implemented and executed.

The on-site Asbestos Supervisor will collaborate with the Owner and/or General Contractor to adopt and implement an Emergency Action Plan, First Aid Medical Emergency Plan and Accident/Incident Investigation Plan. The on-site Supervisor and/or Safety Person are responsible for completing a job hazard analysis, inspection of the project throughout its duration, personnel monitoring for OSHA compliance throughout the project and correcting identified hazards in a timely manner.

The abatement contractor shall provide the regulatory waste profiling, manifesting, removal and disposal of ACMs that are set for removal based on the schedule for select demolition activities to be completed by other contractor(s) for the roof and in select interior areas. The following ACMs are scheduled for removal for this project:

Sample
Number
Homogenous Area
Description
Material
Location
Percent and
Type of Asbestos
NESHAP
Designation
Estimated
Quantity
01-03 Door window putty
FUT Hangar
– Exterior
Doors
Chrysotile – trace (<1%) Not
Applicable 800 SF
07-09 Roof core FUT Hangar
– Roof Chrysotile – 40-60% Category I
Non-Friable 9,375 SF
13-15 Walking mat with
adhesive
FUT Hangar
– Roof Chrysotile – 2% Category I
Non-Friable 20 SF
31-33 12x12 floor tile and
mastic
FUT Hangar –
Northwest
Office
Chrysotile – 3-4% Category I
Non-Friable 125 SF
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ACM and LBP Scope of Work
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36 Drywall with joint
compound (painted
blue)
FUT Hangar –
Northwest
Office
Chrysotile – trace (<1%) Not
Applicable 500 SF
37-39 Texture coat
FUT Hangar –
Northwest
Office
Chrysotile – trace (<1%) Not
Applicable 500 SF
44-46 Drywall with joint
compound
FUT Hangar –
Shop Kitchen Chrysotile – 2% Friable 500 SF
47-49 Sprayed on
acoustic ceiling
FUT Hangar –
South Wall Chrysotile – 2% Friable 500 SF
51-53 9x9 floor tile
FUT Hangar –
Ladies’
Restroom
Chrysotile – 5% Category I
Non-Friable 25 SF
Assumed Electrical switch
blocks
FUT Hangar –
Electrical
Panels
Assumed Category II
Non-Friable 12 SF
In addition, the abatement contractor shall provide the regulatory waste profiling, manifesting, removal and disposal of LBP that will be impacted during asbestos removal activities. The following LBP-coated building components are scheduled for removal for this project:

Sample
Number Paint Sampled Paint
Location
Lead Content
(mg/cm2) Condition Estimated Quantity
36 White Metal on V
Beam
FUT Hangar
(Hangar 2)
Exterior

1.7 Intact 250 SF
38 White Wood on V
Beam
FUT Hangar
(Hangar 2)
Exterior

2.2 Poor 250 SF
40 Red Metal on
Beam
FUT Hangar
(Hangar 2)
Exterior

2.7 Intact 100 SF
Assumed Red Metal on
Beam
FUT Hangar
(Hangar 2)
Interior
ASSUMED Intact 1,800 SF

In addition, several other painted surfaces detailed in the attached LBP survey report were found to contain lead above the detection limit by XRF and are defined as lead-containing paint.

This work plan includes general work procedures in accordance with industry standards and best practices. This Work Plan may be adjusted by the abatement contractor’s competent field person or Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
ACM and LBP Scope of Work
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manager to improve safe working conditions, eliminate hazards, and improve productivity as the project is performed.

3.1 Designated Supervisor/Safety Person
The designated Supervisor/Safety Person on-site during abatement will be provided by the abatement contractor. Asbestos supervisor and worker training records will be maintained on-site and made available for review and will include the following as applicable:
• OSHA 30-Hour Construction Training for Supervisors
• OSHA 10-Hour Construction Training for Laborers
• Demolition Qualified Supervisor
• First Aid & Cardiopulmonary Resuscitation (CPR) training • Asbestos/Lead (California Department of Public Health [CDPH])/HAZWOPER Abatement Supervisor (40-Hour Training)
• Asbestos Abatement Workers (32-Hour Training)
• Lead Abatement Workers (24-Hour Training + CDPH)
• HAZWOPER Workers (24-Hour Training)
• Other applicable and required scope related certifications such as forklifts, rigging, fall protection, etc.

Abatement personnel shall be trained according to Cal/OSHA, Fed/OSHA, and CDPH licensing requirements. Abatement personnel shall also be enrolled in a medical surveillance program and receive annual respiratory protection training/ testing which includes fit testing and shall be medically cleared by a licensed physician to wear respiratory protection.

3.2 Emergency Response and Evacuation Procedures
In the event of a site emergency and/or local disaster, personnel will call 911 to contact the appropriate agency such as fire, police or ambulance. The Abatement Supervisor will be the designated contact on- site for all emergencies.

The abatement contractor shall prepare a contingency plan for emergencies including fire, accident, power failure, negative pressure system failure, supplied air system failure (if applicable), evacuation of injured persons for both life threatening and non-life threatening, or any other event that may require modification or abridgment of decontamination or work area isolation procedures. Include in plan specific procedures for decontamination or work area isolation. Note that nothing in this specification should Cleanup Work Plan
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impede safe exiting or providing of adequate medical attention in the event of an emergency. Keep these plans in the on-site office.

The contractor shall establish and mark emergency and fire exits from the work area. Emergency procedures shall have priority over established decontamination entry and exit procedures. Audible and visible fire and emergency evacuation alarms shall be installed to be heard and seen throughout the entire work area. In the event of site wide emergency, a hand-held air horn shall be used to alert personnel to evacuate the Site.

Primary and secondary assembly areas will be identified during an on-site orientation conducted by the Abatement Contractor. Daily tailgate sign-in sheets shall be utilized to account for personnel on-site.

3.3 Notifications
The Asbestos National Emission Standards for Hazardous Air Pollutants (NESHAP), 40 CFR Part 61, Subpart M, requires written notification of demolition or renovation operations under Section 61.145. The SJVAPCD form may be used to fulfill this requirement. Incomplete notification may result in enforcement action. The notification must be postmarked or delivered no later than ten working days prior to the beginning of the asbestos removal activity or demolition. Please submit this form and corresponding notification fees (per District Rule 3050) to the following office:

SJVAPCD
Attention: Asbestos Program
1990 E. Gettysburg Avenue
Fresno, California 93726
[email protected]

3.4 Personal Protective Equipment (PPE)
Provide worker protection as required by OSHA, state, and local standards applicable to the work.

Contractor is solely responsible for enforcing worker protection requirements at least equal to those specified in this Section. All workers will be required to wear the following PPE:
• Head protection (hard hats)
• High-visibility vests
• Eye protection (safety glasses, face shields as necessary) • Foot protection (work boots, steel toe at discretion of worker) • Hearing protection (ear plugs, earmuffs as necessary) • Hand protection (gloves, as necessary)
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• Respiratory protection, abatement work (half/full-face respirator, powered air purifying respirator [PAPR], w/ P-100 filters)
• Clothing protection, for all abatement work (disposable Tyvek full-body coveralls)

3.5 Work Plan Procedures

3.5.1 Utility Disconnections and Lock-Out-Tag-Out
The abatement contractor will coordinate and verify with the owner the following general requirements regarding temporary facilities:
• Provide temporary connections to existing building utilities or provide temporary facilities as required herein or as necessary to conduct the work.
• Use qualified tradesmen for installation of temporary services and facilities. Locate, modify, and extend temporary services and facilities where they will serve the project adequately and result in minimum interference with the performance of the work.
• In occupied buildings, the owner's maintenance personnel shall lock and tag out all electrical and HVAC equipment in the asbestos abatement area. The contractor shall verify that the power and HVAC have been locked and tagged out prior to beginning work. • In unoccupied buildings, the contractor is responsible for the lock and tag out of all power sources and HVAC equipment.
• Comply with applicable National Electrical Manufacturers Association (NEMA), National Electrical Code (NEC) and Underwriters Laboratories (UL) standards and governing state and local regulations for materials and layout of temporary electric service. • Ground Fault Protection: Provide receptacle outlets equipped with ground fault circuit interrupters, reset button and pilot light, for plug-in connection of power tools and equipment. • Provide a weatherproof, grounded temporary electric power service and distribution system of sufficient size, capacity, and power characteristics to accommodate performance of work during the construction period.

3.5.2 Work Area Preparation
The Site is mostly paved with some landscaped areas. No surficial preparation is needed prior to beginning work. The Site will be secured with fencing and secured access gates. The proposed excavation areas presented in Figure 3 will be surveyed and staked by a licensed surveyor to ensure that the remedial excavation is performed in the correct locations. The following Site preparation procedures should be implemented prior to abatement or excavation activities:

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• Non-stationary items will be removed from the work area to prevent future contamination of the items and to facilitate the abatement process.
• Temporary fencing should be erected to establish an exclusion zone as depicted in Figure 2. • The Contractor shall set up a staging area that will be used for equipment, drop boxes and materials used for abatement and remediation. A preliminary staging area is shown in Figure 2.

Any variations to the exclusion zone and staging area must be approved by the City or project architect as the facility is an active airport and operated under Federal Aviation Administration Guidelines.
• Before abatement work begins, a decontamination unit must be in operation and should be positioned within the designated staging area. The abatement contractor will isolate the work area with caution tape and asbestos signs, in both English & Spanish. Signs will be posted at the entrances of the work areas.
• The Contractor’s site supervisor/personnel will be required to monitor entrance of the restricted work area and prohibit access to the work area by untrained personnel once abatement work starts. Only trained, certified and approved persons will be allowed within the work area from start of work until final clearances are provided by the 3
rd party environmental consultant.
• The Contractor shall wet clean and/or High-Efficiency Particulate Air (HEPA) vacuum all items and equipment in the work area suspected of being contaminated with asbestos, but not in direct contact with the asbestos material and either secure these items in place with polyethylene sheeting or have them removed from the work area.
• Critical Barriers: The contractor shall thoroughly seal the work area for the duration of the work by completely sealing off all individual openings and fixtures in the work area, including, but not limited to, heating and ventilation ducts, doorways, corridors, windows, skylights, and lighting, with polyethylene sheeting taped securely in place. If the contractor is using sealant materials to fill in small holes or cracks, the material shall have appropriate fire ratings. • Floors (if required): Apply one or more layers of 6 mil (minimum) polyethylene plastic sheeting with joints overlapped 24 inches and taped securely. Plastic shall be carried up walls a minimum of 12 inches and secured.
• Walls (if required): Apply one or more layers of 4 mil (minimum) polyethylene plastic sheeting with joints lapped 24 inches and taped securely. Plastic shall be lapped over floor coverings and taped securely.
• Floors and walls (if required) shall be installed in such a manner that they may be removed independently of the critical barriers.
• Entrances and exits from the work area will have triple barriers of polyethylene plastic sheeting so that the work area is always closed off by one barrier when workers enter or exit.

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• No water may be left standing on the floor at the end of the workday. • Floor surfaces, walls, finishes or coverings, etc., that in the contractor’s opinion will likely be damaged by water or that may become contaminated with asbestos, shall have additional protective preparation as the contractor sees appropriate, at his cost, to protect the original condition of the surfaces.
• Any costs associated with physical damage caused by water or securing polyethylene sheeting to areas inside or outside the abatement area shall be the contractor's responsibility. • Integrity of these seals shall be regularly checked and maintained by the contractor. • After work area preparation, the contractor shall notify the air monitor verbally with written follow- up that he is ready for a prework inspection.
• Provide a Personnel Decontamination Unit with the following components:
o Require all persons without exception to pass through this decontamination unit for entry into and exiting from the work area for any purpose. Do not allow parallel routes for entry or exit. Do not remove equipment or materials through Personnel Decontamination Unit. o Provide temporary lighting within decontamination unit as necessary to reach an adequate lighting level.
o Maintain floor of changing room dry and clean at all times. Do not allow the overflow water from the shower to escape the shower room.
o Damp wipe all surfaces twice after each shift change with a disinfectant solution. o Provide hot and cold water, drainage and standard fixtures including an elevated shower head as necessary for a complete and operable shower. A water hose and bucket are not an acceptable shower.
o Arrange water shut off and drain pump operation controls so that a single individual can shower without assistance from either inside or outside of the work area. o Pump shower wastewater to drain. Provide 20-micron and 5-micron wastewater filters in line to drain. Change filters daily or more often if necessary.

3.5.3 Water Service
• The City shall supply a source of water. The Contractor bears all expense of heating and getting water to the work and decontamination areas.
• Supply hot and cold water to the decontamination unit. Hot water shall be supplied at a minimum temperature of 100 degrees Fahrenheit.

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• After completion of use, connections and fittings shall be removed without damage or alteration to existing water piping and equipment.

3.5.4 Negative Pressure System
• HEPA filter exhaust systems equipped with new HEPA filters for each project shall be used.

Exhaust equipment and systems shall comply with ANSI Z9.2-79 and used according to manufacturer's recommendations.
• A system of HEPA-equipped air filtration devices shall be configured so that a pressure differential is established between the work area and the surrounding area (-0.02 to -0.04" water column). A continuous chart-recorded manometer shall be used to confirm this condition. • Additional air filtration devices shall be provided inside the work area for emergency standby as well as for circulation of dead air spaces.
• The pressure differential is always maintained after preparation is complete and until the final visual inspection and air tests confirm the area is clean and acceptable for occupancy and the designer confirms verbally with written follow- up to discontinue the use of the negative pressure system.
• Air shall be exhausted outside the building. Any variations must be approved by the air monitor or the Owner’s representative.
• The contractor shall check daily for leaks and log his checks in the bound logbook. This includes checks internal to air-moving devices.
• There shall be a minimum of four air changes per hour in any containment.

3.6 Asbestos Abatement Methods
Prior to starting asbestos removal, the contractor's equipment, work area and decontamination units will be inspected and approved by the air monitor or Owner’s representative. • All loose ACM removed in the work area shall be adequately wet, bagged, sealed, and labeled properly before personnel breaks or end of shift.
• All plastic sheeting, tape, cleaning material, clothing and all other disposable material or items used in the work area shall be packed into sealable plastic bags (6 mil minimum) and treated as contaminated material.
• All material shall be double bagged.
• All excess water (except shower water) shall be combined with removed material or other absorptive material and properly disposed of as per EPA regulations. The selected contractor Cleanup Work Plan
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shall not place water in storm drains, onto lawns, or into ditches, creeks, streams, rivers, or oceans.

3.6.1 Door Window Putty
• The removal of putty at the door windows does not require containment to be established. A regulated work area with asbestos signage and controlled access shall be established prior to the start of either whole component removal or putty removal prior to resealing the windows. • Personnel will place 6-mil polyethylene drop cloths to the area below and /or adjacent to the work areas.
• Material generated from removal will be placed in 6 mil poly bags (double-bagged) or whole components may be wrapped in 6 mil poly and labeled accordingly. • The putty or whole components doors shall be removed with the use of hand tools (scrapers, non-mechanized saws or blades, etc.). If whole component removal is undertaken, the doors shall be cut into manageable pieces without disturbing the putty and be placed into asbestos bags or double wrapped with 6-mil polyethylene sheeting for disposal. Non-asbestos door or window components may be segregated and disposed of as construction debris. • Asbestos-containing putty may be removed with the use of scrapers. Wire brushes and scouring pads will be used for detailed cleaning of the surface to prepare the windows for resealing. • During removal water will be applied to the surface area to reduce potential of dust and/or to comply with wet removal methods. Hudson sprayers or airless sprayers containing water will be staged within the regulated area for wet removal methods during abatement. • ACM shall be placed into the labeled/lockable disposal containers. • A remote, two-stage decontamination unit will be installed at the edge of the regulated area for the decontamination of workers.

3.6.2 Roofing Materials
The roof core at the building contains asbestos. The abatement contractor’s asbestos supervisor and safety person should determine the safest method for the removal of the roofing materials that ensures workers are not injured during abatement work at the roof. This may include working from articulating boom lifts that can reach all roof areas, scaffolding, or temporary shoring that is approved by a structural engineer. The removal of ACM at the roof shall comply with the following general guidelines:
• Open-air removal of roofing materials does not require containment to be established. A regulated work area with asbestos signage and controlled access shall be established prior to the start of roof abatement work.

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• Personnel will place 6-mil polyethylene drop cloths to the area below and /or adjacent to the roof work areas.
• Material generated from removal will be placed in 6 mil poly bags (double-bagged) or larger items may be wrapped in 6 mil poly and labeled accordingly.
• All asbestos-containing roofing materials must be lowered using a lift or stairs and cannot be thrown or fed through a chute to the ground. ACM roofing shall be placed into the labeled/lockable disposal containers.
• The roof membrane and felt layers shall be removed to the roof deck with the use of hand tools (hatchets, non-mechanized saws or blades, etc.). The roof shall be hand cut into manageable pieces that are to be placed into asbestos bags for disposal. Non-asbestos roof components may be segregated and disposed of as construction debris.
• Asbestos-containing roof mastics will be removed with the use of razor scrapers or by whole component removal. Personnel will remove visible mastic at the wall cap. Wire brushes and scouring pads will be used for detailed cleaning of the surface to prepare the area for re-roofing. • During removal water will be applied to the surface area to reduce potential of dust and/or to comply with wet removal methods. Hudson sprayers or airless sprayers containing water will be staged within the regulated area for wet removal methods during abatement. • A remote, two-stage decontamination unit will be installed at the edge of the regulated area for the decontamination of workers.

3.6.3 Flooring Materials
• Asbestos-containing flooring and mastic will be removed in a negative pressure full containment work area. See preparation procedures in Section 6.4.
• A three-stage decontamination unit will be installed at the regulated area as required. • The abatement contractor will remove the material using wet methods. • The abatement contractor will utilize handheld equipment and tools, and ACM will be removed in manageable sections.
• ACM will be placed in 6 mil poly bags (double-bagged) or larger items may be wrapped in 6 mil poly and labeled accordingly.

3.6.4 Drywall with Joint Compound (Blue)
• Asbestos-containing drywall with joint compound systems will be removed in a negative pressure full containment work area.
• A three-stage decontamination unit will be installed at the regulated area as required.

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• The abatement contractor will remove the material using wet methods. • The abatement contractor will utilize handheld equipment and tools, and ACM will be removed in manageable sections.
• ACM will be placed in 6 mil poly bags (double-bagged) or larger items may be wrapped in 6 mil poly and labeled accordingly.

3.6.5 Texture Coat
• Asbestos-containing texture coat will be removed in a negative pressure full containment work area.
• A three-stage decontamination unit will be installed at the regulated area as required. • The abatement contractor will remove the material using wet methods. • The abatement contractor will utilize handheld equipment and tools, and ACM will be removed in manageable sections.
• ACM will be placed in 6 mil poly bags (double-bagged) or larger items may be wrapped in 6 mil poly and labeled accordingly.

3.6.6 Drywall with Joint Compound
• Asbestos-containing drywall with joint compound systems will be removed in a negative pressure full containment work area.
• A three-stage decontamination unit will be installed at the regulated area as required. • The abatement contractor will remove the material using wet methods. • The abatement contractor will utilize handheld equipment and tools, and ACM will be removed in manageable sections.
• ACM will be placed in 6 mil poly bags (double-bagged) or larger items may be wrapped in 6 mil poly and labeled accordingly.

3.6.7 Sprayed on Acoustical Ceiling
• Asbestos-containing sprayed on acoustical ceiling will be removed in a negative pressure full containment work area.
• A three-stage decontamination unit will be installed at the regulated area as required.

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3.6.8 Electrical Switch Blocks
• The removal of electrical switch blocks does not require containment to be established. A regulated work area with asbestos signage and controlled access shall be established prior to the start of either whole component removal if these materials are determined to contain asbestos once deenergized.
• Personnel will place 6-mil polyethylene drop cloths to the area below and /or adjacent to the work areas.
• Material generated from removal will be placed in 6 mil poly bags (double-bagged) or oversized components may be wrapped in 6 mil poly and labeled accordingly. • The electrical switch blocks shall be removed with the use of hand tools without breaking the material. Non-asbestos components associated with the electrical switch blocks may be segregated and disposed of as construction debris.
• During removal water will be applied to the surface area to reduce potential of dust and/or to comply with wet removal methods. Hudson sprayers or airless sprayers containing water will be staged within the regulated area for wet removal methods during abatement. • ACM shall be placed into the labeled/lockable disposal containers. • A remote, two-stage decontamination unit will be installed at the edge of the regulated area for the decontamination of workers.

3.6.9 Waste Handling and Disposal
• During the ACM abatement activity, all asbestos materials will be adequately wet with amended water in accordance with OSHA/SJVUAPCD regulations.
• The waste will be placed into double 6 mil polyethylene bags with asbestos labels. • Each bag will be independently sealed and taped and placed into a waste shipping container pending waste profiling: off-site transportation and disposal. • Upon receipt of the waste acceptance from the landfill a waste manifest will be created for waste transportation and disposal and the transportation will be scheduled Cleanup Work Plan
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• The manifest will be signed prior to the waste shipment and final landfill disposal.

3.6.10 Transportation of Hazardous Waste Material (Lead-Based Paint)
• As part of the waste profiling, transportation and disposal, the owner (Waste Generator) will provide a Generator EPA identification number. Once the EPA ID number is received the following scope will follow:
o A waste profile will be generated for review and signature approval. o Upon receipt of the generator signed waste profile the profile will be forwarded to the designated landfill for review and issuance of a project specific waste acceptance letter o Upon receipt of the waste acceptance from the landfill a waste manifest will be created for waste transportation and disposal and the transportation will be scheduled o A manifest will be signed prior to the waste shipment and final landfill disposition. • Regulated waste shall be removed from Site by DOT certified hauler who will transport to a regulated facility for ultimate disposal.
• Non-Friable and Friable Waste will be transported to a waste facility that accepts asbestos and/or hazardous waste.

3.6.11 Equipment Operation
• Qualified/trained operators are required to operate lifts and other mechanical equipment used on this project.
• Daily inspections of equipment shall be completed and documented. • Inspections/certifications shall be maintained on-site for review.

3.6.12 Fall Protection
In the event personnel are required to perform work at heights greater than 6 feet the following will be mandatory:
• Competent person identified as per the Fall Hazard Assessment / Written Plan. • Documented inspections of all fall protection equipment. • Equipment to be properly stored.

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• Fall Hazard Assessment / Written Plan completed prior to all work. Tailgate meeting to be conducted based on fall hazard assessment findings. This document will be maintained on site always and made available for review upon request.
• Use of boom & scissor-lift use always requires 100% tie-off. • Workers wearing fall protection equipment are properly trained. • Anchorages / Tie-off points capable of withstanding 5000 lbs. per person. • Fall Rescue Plan identified in Fall Hazard Assessment / Written Plan.

3.6.13 Corrective Action Plan – Dust & Debris Control Measures In the event fugitive dust is observed migrating outside the perimeter construction area, whether due to high windy conditions or inadequate dust control measures, all work will be immediately stopped to enact the Corrective Action Plan.
• Stop dust-generating activity until the problem is corrected. • Notify the Site Superintendent of dust conditions and implement dust suppression procedures. • Remove accumulated debris from problematic areas, and/or cover, enclose or isolate dust generating areas/surfaces to shield them from dust-causing sources. • Increase frequency, volume, and/or coverage of watering to prevent debris/dust from drying. • Provide additional dust suppression systems and operating personnel during the demolition task duration.
• Modify operating procedures and methods to eliminate problematic conditions. • Increase the level of worker awareness and instruct them in the implementation of any new or modified operation procedures.
• Report and document all procedural modifications and results. • Perform routine inspections of dust suppression methods and work areas for fugitive dust sources.

3.6.14 Air Monitoring
• The Owner shall be responsible for the coordination and contracting of an industrial hygiene firm to perform ambient and clearance air monitoring for asbestos, as required. Services of the industrial hygiene firm will be paid by the Owner. Air monitors shall be accredited in California.

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• The industrial hygiene firm shall submit copies of their accreditations and documentation on respiratory protection training to the Owner’s representative prior to the award of the contract. • The abatement contractor will conduct personal air monitoring for their workers in accordance with OSHA requirements for asbestos and lead exposure (during operations with LBP The abatement contractor for each individual task being performed as this is required as part of our respiratory protection program and as required in Title 8 CCR 1529 and 1532.1. • Personal air monitoring will be conducted to evaluate the effectiveness of wet removal methods to control the potential release of asbestos fibers and lead dust.

3.6.15 Decontamination Procedure
• A decontamination unit will be required at each asbestos work area. o Cover the floor where the decontamination unit will be placed with two (2) layers of 6-mil polyethylene prior to setting-up of unit.
o The abatement contractor will remove all visible accumulations of asbestos material and debris, HEPA vacuum, and wet-clean surfaces within the work area to remove asbestos residue.
o After cleaning, the abatement contractor shall perform a complete visual inspection of the Work Area to ensure that all the areas are free of any visible debris or residue. o Provide a single entry and exit to each work area.
o Provide a three (3) or (2) stage decontamination unit consisting of a clean room, equipment/ dirty room, and shower. This area must be constructed of 6-mil polyethylene sheeting and PVC piping at a minimum.
• Each of the three (3) stages shall be separated from each other and the abatement area by a rigid door with vents that allow for the flow of air through the clean room, and shower room. • The equipment room should utilize a separate HEPA vent to allow air to be drawn into the containment, but not through the equipment room.
• Decontamination units:
o The equipment room must be of sufficient size for storage of all equipment, disposal facilities for contaminated clothing, and allow removal of such clothing by employees. o Shower facilities must be watertight, have ample hot and cold-water supply adjustable at the tap, and drain for wastewater with a filter capable of removing particles greater than

0.5 microns. Prefabricated shower facilities are acceptable; however, "Hudson Sprayer" style shower systems are not acceptable.

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o The clean room must be of adequate size to allow employees to put on abatement gear.

Storage facilities for street clothing and respirators must be provided. Towels will be available in this area to use after showering.

3.6.16 Signage
• Warning signs in English and Spanish shall be provided at each regulated area. o Labeling shall be in accordance with U.S. EPA requirements. Provide the required signs, labels, warnings, or posted instructions for containers used to transport asbestos or lead material to the landfill(s).
o Location of Caution Signs and Labels: Provide bilingual caution signs at all approaches to each work area. Locate signs at such a distance that personnel may read the sign and take the necessary protective steps required before entering the area. Provide labels and affix to all asbestos or lead materials, scrap, waste, debris, and other products contaminated with asbestos or lead.

3.6.17 Disposal – Packaging & Labeling
• 6-mm-thick leak-proof polyethylene bags shall be provided labeled as follows:
o First label is to be used on all hazardous and non-hazardous asbestos waste, in accordance with 40 CFR 264 and 265.
o A second label is to be used on all non-friable, non-hazardous asbestos waste in accordance with NESHAPS 40 CFR § 262.152 (b)(i)(IV) for Waste Generator Identification.
o All asbestos waste shall be segregated into Friable and Non-Friable waste streams to be dispose of as Hazardous Asbestos Waste (Friable) and Non-Hazardous Waste (Non- Friable).
• Ensure all disposal containers are properly labeled according to 8 CCR 1529, 5194 (HAZCOM), 49 CFR 171-179 (USDOT), 40 CFR 61 Subpart M (NESHAP), and any local regulations and state regulations a required by this specification.
• It is the responsibility of the abatement contractor to determine current waste handling, labeling, transportation and disposal regulations for the work site and for each waste disposal landfill. The abatement contractor will fully comply with local, state, and federal regulations and provide documentation.
• Comply with local, state and federal codes relating to wastewater release from work areas and decontamination units.

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• Asbestos-containing waste that is properly labeled and double-bagged may be temporarily stored in unoccupied areas approved by the Owner. Rooms must be made secure before storing the waste.
• All asbestos waste shall be double wrapped prior to transport from the work area. • All vehicles used to transport waste must be registered with the Department of Toxic Substances Control.
• Hazardous waste containers/roll offs shall be fully lined with a double layer of 6 mil polyethylene sheeting.
• All trace asbestos waste shall be treated as non-friable non-hazardous waste and packaged accordingly.

3.6.18 Visual Inspections / Air Monitoring Clearances
• The abatement contractor and Owner shall coordinate with the Abatement Monitoring and Clearance Testing Program (AMCTP) through a third-party on-site monitoring firm/ hygienist who will monitor the abatement actions and activities. This firm will be responsible to report and advise the Owner on whether the ACM and LBP are properly abated or managed, and that the abatement contractor has complied with all the required hazardous material rules and this Work Plan.
• A final visual inspection shall be conducted by the industrial hygiene firm. The inspection shall be conducted following the guidelines set forth in the ASTM International Standard Practices for Visual Inspection of Asbestos Abatement Projects, Designation: E1368.23. If the work area is found visibly clean, air samples will be collected by the industrial hygiene firm. o During the air testing, the accredited air monitor shall cause disruptive air currents as described in the EPA-AHERA regulations (40 CFR Part 763, Subpart E, Appendix A). o If samples are to be analyzed using the phase contrast microscopy (PCM) with a minimum of five samples using NIOSH 7400 method, then the maximum flow rate is 12 liters per minute, with a minimum sample size of 1,201 liters for each sample. Clearance criteria shall be less than 0.01 fibers per cubic centimeter (F/cc) for all samples analyzed. o If samples are to be analyzed using transmission electron microscopy (TEM), the Mandatory Transmission Electron Microscopy Method described in 40 CFR Part 763, Subpart E, Appendix F shall be used. Clearance criteria shall be an arithmetic mean less than or equal to 70 structures per square millimeter.
• The industrial hygiene firm shall immediately report the final air sampling clearance results to the designer.

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• The use of the negative pressure system may be discontinued after the industrial hygiene firm instructs the contractor that they have passed the final project decontamination inspection.

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4 Lead Impacted Soils Scope of Work

4.1 Permitting
Necessary permits for excavation activities shall be obtained prior to start of excavation. Based on the selected removal action alternative, the following permits may be required:
• Grading and stormwater pollution prevention permits from the City of Fresno. • Project approval from Valley Air District.
• City of Fresno will obtain a US EPA identification number as the generator of the waste.

The excavation and soil handling will be conducted by a qualified, HAZWOPER-trained contractor using conventional earthwork equipment. The contractor will prepare a Construction Safety Plan, which will address identification of hazards, hazard mitigation, safe work practices and emergency response procedures for the project. The site-specific Construction Safety Plan will be prepared to comply with 29 CFR 1910.120 and 8 CCR GIS0 5192. In addition, workers should maintain the appropriate certificates provided by CDPH for the work being performed.

4.2 Utility Clearance
Prior to scheduled field work activities, the remediation contractor will mark the extent of the proposed excavation in accordance with Underground Services Alert (USA) guidelines. The remediation contractor will contact USA at least 72 hours prior to the start of field work to allow USA members to mark out subsurface utility locations. Additionally, the remediation contractor will confirm the locations of any potential post-demolition utilities that may remain on-site with the property owner and ensure that they have been de-energized where applicable. Any utilities encountered within the excavation extent will be de-energized of any energy source and worked around, cut and capped, or re-routed along the excavation extent in the most feasible way as directed by the City of Fresno. A private utility locator will be retained as needed to confirm the locations of subsurface utilities, and to confirm that proposed excavation areas are free of shallow, detectable utilities or installations.

4.3 Soil Excavation
The upper three (3) feet of soil will be removed to minimize the potential for direct exposure to lead in soil.

The proposed excavation limits for impacted soils are shown on Figure 3. It is anticipated that no sloping or benching will be needed. If needed, a ramp leading into the excavation will be sloped at a minimum of five (5) percent to allow for safe equipment access. It is estimated that the total in-place volume of impacted soil for excavation is approximately 140 cubic yards.

Soil excavation activities are expected to take approximately one (1) week to complete. Work will be conducted between 7 a.m. and 5 p.m., Monday through Friday, in accordance with City requirements. Soil Cleanup Work Plan
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will be removed using standard earthmoving equipment (e.g., track excavator, front end loader) or with hand tools if near subsurface utilities. It is anticipated that excavated soils will be direct loaded into haul trucks and would be pre-profiled for disposal using existing data or data obtained at the direction of the receiving landfill. Alternatively, excavated soil may be segregated into stockpiles for characterization as Class II fill or California-hazardous waste (based on lead solubility). Soil segregation must be approved in advance by the City.

If soil is stockpiled, it would be placed on plastic sheeting and covered with plastic sheeting when not actively being worked on and at the end of each workday. Sandbags, or other weighting materials, will be used to keep the plastic cover in place. Soil characterization activities (either in situ or from soil piles) will be directed by the receiving facility landfill and would be coordinated by the Contractor with approval by the City. No soil may leave the Site without approval from the City.

Collection of confirmation soil samples from the floor and sidewalls would be screened using an XRF and/or submitted for laboratory analyses when excavations are deemed complete. Excavation areas would not be backfilled until laboratory confirmation samples are received to ensure that remedial action objectives are met.

Confirmation soil samples will be assigned a unique sample ID, logged onto a chain of custody, and placed into pre-chilled coolers containing ice. Samples will be transported daily (via courier or commercial shipping) to a state-certified analytical laboratory. Samples will be analyzed for lead by USEPA Method 6010. Waste profile samples, if required, will be analyzed for COCs at the direction of the receiving landfill. All sampling (including QC samples) will be conducted in accordance with the procedures detailed in the project Quality Assurance Project Plan (QAPP).

4.4 Soil Backfill
Excavation areas would not be backfilled until laboratory confirmation samples are received to ensure that remedial action objectives are met. Backfill material would be sourced from on-site soils (from grading) that are not impacted above DTSC-SLs where possible and/or imported clean fill from a local source. Imported material should be crushed gravel (3/4-inch minus) sourced from a local quarry. It is anticipated that the required backfill soil volume would be approximately 140 cubic yards. Imported soil would require analytical testing prior to importing. No backfill materials may be brought onto the Site without prior approval from the City.

4.5 Control Measures
During excavation activities, depending on soil conditions, there is potential to generate airborne dust.

Dust control measures will comply with the Valley Air District dust control measures to protect on-site and off-site receptors from chemicals in soil and nuisance dust.

Dust suppression will be performed by spraying the work areas (such as the active excavation, soil handling areas, and haul roads) with water, BioSolve®, or a similar surfactant if water is not sufficient to reduce the potential for dust generation. Misting may also be used on soil placed in the transport trucks.

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Efforts will be made to minimize the soil drop height from the excavator’s bucket onto the soil pile or into the transport trucks. The excavator will be positioned to facilitate loading soil from the leeward side. After the soil is loaded into the transport trucks, the soil will be covered to prevent soil from spilling out of the truck during transport to the disposal facility. Additionally, soil stockpiles and truck beds containing soil will be covered to minimize the potential for dust generation.

The Site is currently unfenced. Prior to commencing Site operations, the Site will be surrounded with temporary security fencing with lockable gates. Low-visibility and low-permeability windscreen will be attached to the temporary fencing prior to commencement of on-site activities.

If precipitation is anticipated during the work, engineering controls will be implemented to minimize the collection of rainwater in the excavation. While on the property, all vehicles will maintain slow speeds (e.g., less than 5 miles per hour) for safety purposes and to minimize generation of dust. Before exiting the job site, the vehicle’s tires will be inspected and brushed, if necessary, to ensure that impacted soil remains on-site. This cleanup/decontamination area will be established as close to the excavation and/or loading areas as possible to minimize spreading the impacted soil. During and at the end of each day (or Add lead as necessary during the work shift) any soil deposited on off-site roadways outside the exit of the Site will be swept and/or collected by hand or with a street sweeper and returned to the property.

4.6 Responsibilities of the Contractor
Bidder agrees to perform all the work included in the Contract as indicated in the Contract Documents for the project. In addition to the items identified in the Contract, the Contractor’s responsibilities shall include, but are not limited to, the following:
• The Contractor shall provide the City of Fresno a 10-business day notice prior to mobilization. • Secure all the required local and state permits within 10 business days after receiving a Notice to Proceed. The Contractor shall provide a copy of the permit(s) to Stantec prior to beginning the work scope.
• Coordinate California 811 and a private utility locator to locate and mark all subsurface utilities prior to mobilization to the Site.
• Establish exclusion and support zones in consultation with Stantec. • Provide sanitary facilities, potable water, first aid kit, and eye wash station within the support zone.
• Install an OSHA-compliant temporary chain-link construction fence along the perimeter of the work areas prior to beginning the work scope.
• Provide a written plan to the City of Fresno prior to mobilization detailing the actions to be taken by the Contractor to protect the existing power and water lines and storm sewer. The plan must detail estimated time frames to properly repair any underground utility that is compromised.

Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
Lead Impacted Soils Scope of Work
Project: 203724380 27

Contractor will make every effort to have these utilities properly repaired as quickly as possible.

The plan must also include the Contractor’s plan to immediately provide a temporary water source to maintain operations of the adjacent building until the water line is repaired. • Excavate, load, and transport all demolition debris to a City of Fresno-approved landfill. • Trucks, trailers and equipment must be cleaned of dirt, gravel and debris prior to leaving the Site.

Measures must be in place to clean trucks to prevent materials from dropping from tail gates, bumpers, tires, trailers, etc. once they leave the Site. Trucks transporting materials shall have latching tailgates and secondary bindery - chains or strapping are acceptable. • Provide accurate tracking of trucks and tonnage information daily and provide the original completed waste manifests, weight tickets and disposal manifests to the City. • Provide the City with the name, address, contact and telephone number of the source/provider of backfill material. The backfill material shall consist of soil with no stones greater than two inches in maximum dimension and free of organic material, sod, peat, perishable or other deleterious materials, and backfill material shall be approved by the City prior to placement. Fill must come from a California Brownfield Program approved facility. • Once excavation and remedial activities are complete, the contractor will backfill and compact the excavation up to 0.5 feet from land surface. The backfill will be compacted in place by tamping in 1-foot lifts using the bucket of the excavator, a soil compactor roller, rammer or similar approved compactor. The excavation areas shall be graded to prevent stormwater from pooling in the excavations.

Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
Post-Job Submittals
Project: 203724380 28

5 Post-Job Submittals
• Submit two sets of post-job submittals to the City following the final completion of the work.

Requests for final payment will not be approved until the submittal package has been reviewed and approved by the City.
• Affidavits: Contractor’s affidavit of payment of debts and claims, affidavit of release of liens, and consent of surety company to final payment.
• ACM and LBP Clearance Report
o Waste Manifests: Receipts from landfill operator which acknowledges the contractor's delivery(s) of waste material. Include date, quantity of material delivered and signature of authorized representative of landfill. Also, include name of waste transporter.
o Daily Logs: A copy of all daily logs showing the following: name, date, entering and leaving time, company or agency represented, reason for entry for all persons entering the work area, employee's daily air monitoring data as required by the OSHA standard and written comments by inspectors, industrial hygienists, designers, and visitors.
o Medical: Copies of worker release forms, asbestos training certification forms and respirator training documentation of all new employees hired during the project. o Photographs
o Chain of Custodies
o Air Monitoring Results
• Lead Impacted Soils Removal Completion Report
o Waste Manifests, Weight Tickets: Receipts from landfill operator which acknowledges the contractor's delivery(s) of waste material. Include date, quantity of material delivered and signature of authorized representative of landfill. Also, include name of waste transporter.
o Daily Logs: A copy of all daily logs showing the following: name, date, entering and leaving time, company or agency represented, reason for entry for all persons entering the work area, employee's daily air monitoring data as required by the OSHA standard and written comments by inspectors, industrial hygienists, designers, and visitors.
o Medical: Copies of worker release forms, asbestos training certification forms and respirator training documentation of all new employees hired during the project.

Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
Post-Job Submittals
Project: 203724380 29

o Photographs
o Chain of Custodies
o Air Monitoring Results
o Soil Confirmations sampling.
o Summary of Soil Removal Activities
o Confirmation of Clean Imported Backfill
o Confirmation of Compaction of Backfilled Materials
Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
Airport Security and FAA Requirements
Project: 203724380 30

6 Airport Security and FAA Requirements
A brief note on badging, escorting, secure storage, FAA construction safety, and routing coordination. If any cranes are being used on the facility, it will require a FAA Form 7460 to be completed, and the review process takes a minimum of 45 days. Badging is not required at the Subject Property, but PIN code access is. PIN codes can be provided to the Contractor by the City.

Cleanup Work Plan
716 West Kearney Boulevard, Fresno, California
References
Project: 203724380 31

References
Group Delta, Inc. 2024a. Phase I Environmental Site Assessment, Chandler Airport Hangar, 716 West Kearney Boulevard, Fresno, California. December 2024.

Group Delta 2024b. Asbestos and Lead-Based Paint Survey, Chandler Airport Hangar, 716 West Kearney Boulevard, Fresno, California. December 2024.

Group Delta 2025. Phase II Environmental Site Assessment, Chandler Airport Hangar, 716 West Kearney Boulevard, Fresno, California (Draft). May 2025.

Stantec 2026. Analysis of Brownfield Cleanup Alternatives, Chandler Airport Hangar, Fresno, California.

January 6, 2026.

Figures

Los Angeles
San Francisco
Fresno
Disclaimer: This document has been prepared based on information provided by others as cited in the Notes section. Stantec has not verified the accuracy and/or completeness of this information and shall not be responsible for any errors or omissions which may be incorporated herein as a result. Stantec assumes no responsibility for data supplied in electronic format, and the recipient accepts full responsibility for verifying the accuracy and completeness of the data.

Subject Property Boundary
Notes

1. Coordinate System: NAD 1983 UTM Zone 10N

2. Background: USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S.

Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed July 22, 2025., Sources: Esri, TomTom, Garmin, FAO, NOAA, USGS, © OpenStreetMap contributors, and the GIS User Community
(At original document size of 8.5x11)
1:10,000
0 500 1,000
Feet Client/Project
Figure No.

Project Location
Title
Chandler Airport
716 West Kearney
Fresno, California 93706
203724380
City of Fresno
EPA Coalition Assessment Grant
Hazardous Building Materials Work Plan
Property Location Map
1 716
Aircraft Parking

AIRPORT RD

WCHANDLERAVE
S
FRUIT
AVES
TEILM
AN
AVE

W KEARNEY BLVD
Disclaimer: This document has been prepared based on information provided by others as cited in the Notes section. Stantec has not verified the accuracy and/or completeness of this information and shall not be responsible for any errors or omissions which may be incorporated herein as a result. Stantec assumes no responsibility for data supplied in electronic format, and the recipient accepts full responsibility for verifying the accuracy and completeness of the data.

C:\working\203724380_fresno\gis\pro\west_kearney_abca_20260302.aprx Revised: 2026-03-02 By: awisher Haul Route
Exclusion Zone
Staging Area
Lead Impacted Soil
Notes

1. Coordinate System: NAD 1983 UTM Zone 11N

2. Background: © OpenStreetMap (and) contributors, CC-
BY-SA
(At original document size of 8.5x11)
1:1,600
0 90 180
Feet
Client/Project
Figure No.

Project Location
Title
Chandler Airport
716 West Kearney
Fresno, California 93706
203724380
City of Fresno
EPA Coalition Assessment Grant
Analysis of Brownfield Cleanup Alternatives
Property Layout and Routing
2 716

C:\working\203724380_fresno\gis\pro\west_kearney_abca_20260302.aprx Revised: 2026-03-02 By: awisher Lead Impacted Soil
Subject Property Boundary
Notes

1. Coordinate System: NAD 1983 UTM Zone 11N

2. Background: © OpenStreetMap (and) contributors, CC-
BY-SA
(At original document size of 8.5x11)
1:400
0 25 50
Feet
Client/Project
Figure No.

Project Location
Title
203724380
Property Area Map
3 Chandler Airport
716 West Kearney
Fresno, California 93706
City of Fresno
EPA Coalition Assessment Grant
Analysis of Brownfield Cleanup Alternatives

Attachment 1

Asbestos and Lead Based Paint Survey

ASBESTOS AND LEAD-BASED PAINT SURVEY

Fresno Chandler Airport
FUT and T Hangars
510 W. Kearney Blvd.

Fresno, CA

Submitted to

City of Fresno
4995 E. Clinton Way
Fresno, CA 93727

Prepared by

GROUP DELTA CONSULTANTS, INC.
32 Mauchly, Suite B
Irvine, CA 92618

Project No. EN8461A
December 13, 2024

32 Mauchly Suite B, Irvine, CA 92618 TEL: (949) 450-2100 Anaheim – Irvine – Ontario – San Diego – Torrance
www.GroupDelta.com

December 13, 2024

City of Fresno
4995 E. Clinton Way
Fresno, CA 93727

Attention: Ms. Cristal De La Torre

Subject: Asbestos and Lead Based Paint Survey
Fresno Chandler Executive Airport
FUT and T Hangars
510 W. Kearney Blvd., Fresno, CA
Group Delta Project No. EN8461A

Dear Ms. De La Torre:

Group Delta Consultants, Inc. (Group Delta ) is pleased to submit this Asbestos and Lead-Based Paint Survey report for the Fresno Chandler Airport, FUT (Hangar 2) and T (Hangar 1) Hangars, 510 W. Kearney Blvd., Fresno, CA.

The purpose of the testing and this report is to provide locations of asbestos-containing materials (ACMs), and lead-based paint (LBP) at the structures within the scope of work.

We appreciate your selection of Group Delta for this project and look forward to assisting you further on this and other projects. If you have any questions, please do not hesitate to contact us.

Very truly yours,
GROUP DELTA CONSULTANTS, INC.

Jerry Sherman, CAC, CDPH, HAZWOPER Supervisor Certified Hazardous Materials Division Manager

TABLE OF CONTENTS

1.0 INTRODUCTION .......................................................................................................... 1

2.0 BUILDING DESCRIPTION.............................................................................................. 1

3.0 METHODOLOGY ......................................................................................................... 1

3.1 Asbestos – Survey Methodology .............................................................................. 1

3.2 Asbestos Analytical Methodology ............................................................................ 2

3.3 Lead Testing – Survey and Analytical Methodology ................................................ 2

4.0 RESULTS ..................................................................................................................... 3

4.1 Asbestos Survey ........................................................................................................ 3

4.2 Lead Containing Paints, Coatings, and Materials ..................................................... 4

5.0 CONCLUSIONS AND RECOMMENDATIONS .................................................................. 5

5.1 Asbestos Containing Materials ................................................................................. 5

5.2 Lead Containing Paints and Coatings ....................................................................... 6

6.0 LIMITATIONS .............................................................................................................. 7

7.0 CLOSING ..................................................................................................................... 7

8.0 SIGNATURES AND QUALIFICATIONS OF ENVIRONMENTAL PROFESSIONALS ................ 8

LIST OF FIGURES

Figures- Positive XRF and Bulk Sample Location Maps

Appendices

Appendix A - Asbestos Analytical Data and Sample Chain of Custody Record Forms Appendix B - XRF Download for Lead-based Paint Testing
Appendix C - Consultant Certificates

Asbestos and Lead Based Paint Survey 1
Fresno Chandler Airport
Fresno, CA

1.0 INTRODUCTION
Group Delta Consultants, Inc. (Group Delta) performed an asbestos and lead-based paint (LBP) survey at the Fresno Chandler Airport, FUT and T Hangars, 510 W. Kearney Blvd., Fresno, CA (site).

The purpose of this survey was to test for asbestos and lead in building materials and to quantify these amounts. Samples were collected throughout the interior and exterior areas including the roof. All work completed is compliant with federal, state, and local air quality regulations.

Group Delta’s on -site asbestos and LBP survey was performed on October 10 th-11th, and November 19,
2024. On-site survey work was completed by Group Delta employees, Mr. David Raver, and Mr. Jerry Sherman. Mr. Raver and Mr. Sherman are Cal/OSHA Certified Asbestos Consultants (CAC) and California Department of Public Health ( CDPH) Lead Inspector/Assessors and/or Lead Sampling Technicians . This report summarizes our assessment findings.

2.0 BUILDING DESCRIPTION
The FUT Hangar is a concrete and metal/wood framed building on concrete slab finished with paint on the exterior. The building construction typically consists of a concrete foundation, wood or metal framing with wood, sheet vinyl, vinyl floor tiles and ceiling tiles. The roof is built up roofing material.

The T Hangars are a metal framed and metal finished building on a concrete foundation. Interior walls are unfinished drywall and the roof is metal.

3.0 METHODOLOGY
The survey was based on sampling of suspect asbestos -containing materials ( ACMs) and a screening of representative painted surfaces and coatings for LBP. Specific survey procedures followed by Group Delta for this survey are provided in the following paragraphs. Laboratory reports for the samples collected are included in Attachment A.

3.1 Asbestos – Survey Methodology
Identification of suspect ACM was performed by visually surveying accessible structural and architectural components and finishes at the site. No excavation or subsurface investigation was conducted to discover buried insulated piping and/or asbestos cement pipes concealed below the surface. All findings, conclusions, and analytical data presented in this report are based on visual inspection and the results of the sampling and analysis of suspected ACM discovered during the survey.

Suspect ACM identified during this survey was bulk sampled using sampling guidelines established by the Environmental Protection Agency (EPA) and by generally following the methods described in Appendix K of Title 8, CCR, Section 1529 of the California Code of Regulations for sample collection. The following summarizes the sampling procedures utilized.
• Visually identified suspect ACM were categorized into homogeneous material areas. A homogeneous material is defined as being a surfacing material, thermal system insulation, or miscellaneous material which is uniform in color and texture. • A sampling scheme was developed based upon the location and quantity of the various Asbestos and Lead Based Paint Survey 2
Fresno Chandler Airport
Fresno, CA

homogeneous materials.
• Trained and certified personnel using appropriate sampling tools and leak -tight containers collected bulk samples.
• Bulk sample collection tools were decontaminated after the collection of each bulk sample to prevent the spread of secondary contamination to subsequent bulk samples. • Each bulk sample was labeled with a unique sample identification number and recorded on a bulk sample log.
• Bulk samples collected were submitted to a laboratory with a chain of custody record.

All material quantities reported herein are rough order of magnitude estimates and should not be used for bidding purposes without review of available record drawings and on -site field verification by the bidder. The information provided in this report should be used in conjunction with construction documents and the contractor’s own field verification of the abatement scope of work including location and extent of removal required for the renovation/demolition project being undertaken at the site. In the event concealed suspect ACMs not previously identified are discovered, the contractor is obligated to stop and notify the owner immediately in compliance with applicable regulations.

3.2 Asbestos Analytical Methodology
Bulk samples of suspect ACM were sent to AmeriSci in Carson, California and EMSL in San Diego, California.

AmeriSci and EMSL are laboratory’s accredited under the National Institute of Standards and Technology (NIST)/National Voluntary Laboratory Accreditation Program (NVLAP) and the California Environmental Laboratory Accreditation Program (Cal- ELAP) for bulk asbestos sample analysis. The sam ples were submitted for analysis by Polarized Light Microscopy (PLM) utilizing dispersion staining techniques in accordance with the EPA’s “Method for the Determination of Asbestos in B ulk Building Materials” U.S.

EPA/600/R-93/116, dated July 1993 and adopted by the NVLAP as Test Method Code 18/A01.

The standard PLM analytical method has a limit of quantification of 1% asbestos. For materials with asbestos detected at trace levels or below 1% by standard PLM, the material must be considered above 1% (ACM) unless re-analyzed and found to be less than 1% by the PLM point count method (400 points minimum but recommended at 1,000 points ). Each sample of a homogeneous area material with trace result(s) must be re-analyzed by point count and found to be less than 1% or assumed to be an ACM per EPA regulation.

3.3 Lead Testing – Survey and Analytical Methodology
LBP is defined as any painted surface with lead levels exceeding 5,000 parts per million (ppm), 1.0 milligrams per square centimeter (mg/cm²) or greater than 0.5 percent by weight (wt%), as set forth in the Department of Housing and Urban Development (HUD) guidelines and California Department of Public Health (CDPH) regulations. Lead-Containing Paints (LCPs) are paints and coatings that contain any amount of detectable lead as defined by Cal/OSHA. It is likely LBPs are present at the site due to the age of construction. Most paints and coatings on pre -1978 buildings contain some detectable lead subject to Cal/OSHA regulation. Therefore, the exhaustive testing required to prove painted coatings do not contain lead is not practical or cost effective. Consequently, all paints and architectural coatings must be considered to contain some detectable levels of lead unless proven otherwise by laboratory analysis.

This survey was based on screening level LBP testing for c haracterizing the general presence of lead in
existing paints and coatings. A n
XRF Analyzer direct read lead testing instrument was used for paint Asbestos and Lead Based Paint Survey 3
Fresno Chandler Airport
Fresno, CA

analysis. The results presented herein are anticipated to be representative of typical conditions but are not inclusive of all painted/coated surfaces present at the buildings. The results of this survey should assist with compliance to the Cal/OSHA L ead in C onstruction Standard and preliminary evaluation of potential construction waste streams.

4.0 RESULTS

4.1 Asbestos Survey
Group Delta collected 71 bulk samples of suspect ACM which were analyzed by PLM analysis. The suspect ACM sampled during this survey are summarized below. The analytical laboratory results for sampled suspect ACMs are listed in Appendix A – Analytical Laboratory Reports. Material sample locations can be found in the attached Figures.

Materials Sampled with Asbestos Reported:

Sample # Material Building/Location Asbestos
(Type/Percentage) Condition
Friable /
Non-
Friable
Approx.

Qnty.
01-03 Door window
putty
FUT Hanger- Exterior
doors
Chrysotile-
Trace <1% * Good Non-friable 800 SF
07-09 Roof core FUT Hanger- Roof Chrysotile-
40-60% Good Non-friable 9,375SF
13-15 Walking mat w/
adhesive FUT Hanger- Roof Chrysotile-
2% Good Non-friable 20 SF
31-33 12x12 Floor tile
and mastic
FUT Hanger- NW office
floor
Chrysotile-
3-4% Good Non-friable 125 SF
36 Drywall w/ joint
compound
(painted blue)
FUT Hanger- NW office Chrysotile-
Trace <1% * Good Friable 500 SF
37-39 Texture coat FUT Hanger- NW office
walls
Chrysotile-
Trace <1% * Good Friable 500 SF
44-46 Drywall w/ joint
compound
FUT Hanger- Shop
kitchen
Chrysotile-
2% Good Friable 500 SF
47-49 Sprayed on
acoustic ceiling FUT Hanger- South wall Chrysotile-
2% Good Non-friable 500 SF
51-53 9x9 Floor tile FUT Hanger- Ladies
restroom
Chrysotile-
5% Good Non-friable 25 SF
Assumed Electrical switch
blocks
FUT Hanger- electrical
panels Assumed Good Non-friable 12 SF
SF = square foot
* = Materials with <1% asbestos reported are considered ACM unless PLM 400 or 1,000-point count analysis is conducted to confirm material is <1%.

Asbestos and Lead Based Paint Survey 4
Fresno Chandler Airport
Fresno, CA

Materials sampled with no asbestos reported FUT Hangar:

• Unfinished drywall
• Roof penetration mastic
• Vapor barrier paper
• Exterior seal
• Window putty (Windows, not door windows)
• Concrete
• Pebble path and adhesive
• Electrical outlet
• Desktop
• Electrical tape
• 12x12 Ceiling tile and mastic
• Ceramic tile and mortar
• White and gray sheet flooring

Materials sampled with no asbestos reported T Ha ngar:

• Drywall

Refer to Attachments for a complete set of the laboratory results and Figures for sample locations.

4.2 Lead Containing Paints, Coatings, and Materials
Group Delta performed a total of 74 XRF lead tests including calibrations from the areas that may be impacted by renovation/demolition. The following is a summary of building components tested and found to be positive for LBP by XRF:

Component Location, Result and Approx.

Quantity
Color, Substrate, & Condition
V Beam
XRF Sample # 36

FUT Hangar (Hangar 2)
Exterior
(250 SF) 1.7 mg/cm²

White,
Metal, Intact
V Beam
XRF Sample # 38

FUT Hangar (Hangar 2)
Exterior
(250 SF) 2.2 mg/cm²

White,
Wood, Poor
Asbestos and Lead Based Paint Survey 5
Fresno Chandler Airport
Fresno, CA

Beam
XRF Sample # 40

FUT Hangar (Hangar 2)
Exterior
(100 SF) 2.7 mg/cm²

Brown,
Wood, Poor
Beam
Assumed, (Inaccessible)

FUT Hangar (Hangar 2)
Interior
(1,800 SF) Assumed

Red,
Metal, Intact

Note: red metal structural beams were not tested for lead due to height restrictions. They are assumed to be LBP.

Materials tested t hat are not lead-based paint can be found in the attached XRF table.

General Interpretations of Lead-Containing Paint (LCP) and LBP Findings Reported:

All painted components must be presumed to contain some detectable levels of lead regardless of non – detection by the XRF method unless exhaustively tested by paint chip analysis. Untested painted/coated components must be presumed to contain some lead at detectable levels. Limited surfaces tested contained high levels of lead considered to be LBP and most of the remaining surfaces contained some detectable lead. The tested surfaces that reported low levels of detected lead must be considered LCP and coatings in the absence of exhaustive testing by wet chemistry methods.

Paint Condition Findings:

The condition of paint at this site is generally in intact and poor condition. Since even low levels of paint may exhibit hazardous waste characteristics, care must be taken to eliminate loose and peeling paint prior to general building demolition. Any loose, peeling or flaking paint should be removed and disposed of as lead-containing waste.

5.0 CONCLUSIONS AND RECOMMENDATIONS

5.1 Asbestos Containing Materials
Prior to renovation a
ctivities, known or assumed ACMs and asbestos-containing construction materials (ACCMs) that are likely to be disturbed by those activities must be removed and disposed of in accordance with all applicable regulations including but not limited to the federal National Emissions Standard for Hazardous Air Pollutants (NESHAPS) and Cal/OSHA regulations. A Cal-OSHA registered, and State licensed,
registered asbestos contractor (abatement/demolition/roofing) is required for removal of ACM prior to general demolition.

Where known or suspected asbestos contaminated spaces must be accessed and entered, the Contractor shall either abate the contamination throughout the space or employ a contractor assist type approach using asbestos qualified and protected trades personnel assisted by a registered asbestos contractor to access the area safely to perform the work and leave the contaminated area through a decontamination containment in a manner that does not allow the exposure of personnel or spread of contamination outside the contaminated work space.

Asbestos and Lead Based Paint Survey 6
Fresno Chandler Airport
Fresno, CA

Where removal is unavoidable, the contractor’s abatement sub -contractor should remove all friable regulated asbestos-containing material (RACM) under Class 1 removal requirements and dispose of waste as hazardous asbestos waste at a landfill permitted for asbestos hazardous waste disposal. The contractor’s abatement sub-contractor should also remove all category I & II non-friable ACM in a manner that does not produce friable ACM under Cal/OSHA Class II removal requirements and dispose of removed materials as non-hazardous asbestos waste at a landfill permitted for asbestos waste disposal.

The following additional requirements should be adhered to for any maintenance, renov ation, or demolition projects requiring asbestos disturbance and/or removal:
• All asbestos-containing wastes shall be manifested as either hazardous or non- hazardous based on asbestos content, friability, and actual waste stream classification. • All asbestos removal should be overseen by a qualified independent third party , retained by the building owner or manager of the building to ensure proper removal, clean up, work area clearance, and review waste shipping and disposal documentation. • Contractor should perform all work in compliance with contract documents and the most recent edition of all applicable Federal, State, and local regulations, standards, and codes governing abatement, transport, and disposal of asbestos.

5.2 Lead Containing Paints and Coatings
The painted components tested at the subject building typically had detectable levels of lead and should be considered LCP coated. LBP was detected at several areas of the building. All paints and coatings should be considered LCP or coatings in the absence of exhaustive sampling and laboratory analysis. The disturbance of these components during demolition activities will require use of personnel trained in lead hazards for construction and will require compliance with applicable Cal/OSHA and Cal/EPA regulation.

At the present time, there is no state or federal regulation requiring mandatory lead removal or abatement prior to disturbance, demolition or renovation of structures with identified lead materials.

However, prior to hot work on painted metal, the paint either needs to be removed or supplied air respirators worn during welding or cutting operation. In addition, there are applicable lead specific Cal/OSHA worker protection requirements and Cal/EPA waste disposal requirements that do apply to lead-related construction activities and associated wastes:
♦ Cal/OSHA: The Cal/OSHA regulation, Title 8, CCR, Section 1532.1 Lead governs occupation exposure to lead. This regulation requires that any task that may potentially expose workers to a
ny concentration of lead, be monitored to determine workers eight-hour time weighted average (TWA) exposure to lead. Prior to initiation of certain activities, referred to as “trigger tasks”, that are believed to have the capability of creating an excessive lead exposure, such workers must be properly fitted with respiratory protection and protective clothing until personal eight-hour TWA results reveal exposures within acceptable levels. Pertinent examples of trigger tasks are manual demolition, manual paint scraping and power tool removal, and hot work involving lead - containing coatings or materials. Cal/OSHA also has agency pre -start notification requirements and worker training and certification depending on exposure levels. Clearly these requirements will apply to demolition, patch and repair, paint removal, and surface preparation work at this site.
♦ Ca
l/EPA: Cal/EPA regulates disposal of lead hazardous waste (22 CCR Division 4.5, Environmental Health Standards for the Management of Hazardous Waste ). The Cal/EPA Department of Toxic Asbestos and Lead Based Paint Survey 7
Fresno Chandler Airport
Fresno, CA

Substance Control (DTSC) has issued guidance indicating that architectural debris with intact lead paint is normally anticipated to be handled as general construction waste. Since detected LCP w
as generally in fair to good condition and most paint coatings tested had low to moderate lead content, it is unlikely that most of the demolition debris will be hazardous as a composite sample.

However, all lead containing waste streams should be considered potentially lead hazardous pending waste tes ting. Further, all surface preparation and paint removal wastes must be considered hazardous wastes due to the likelihood of paint chip lead levels exceeding 1,000 total lead or 5 ppm soluble lead.

All c
onstruction activities impacting lead must be performed in compliance with the most recent edition of all applicable Federal, State, and local regulations, standards, and codes governing abatement, transport, and disposal of lead containing/contaminat ed materials. Selective and general demolition activities will involve disturbing lead and possibly creating lead hazardous wastes. These construction activities must be controlled to prevent uncontrolled release of lead contamination and for environmental protection.

The Contractor conducting building renovation and selective demolition controls the means and methods used and therefore should be required by the contract document to ensure that the renovation and demolition processes are conducted in a manner that creates the minimum amount of hazardous waste and leaves the site free of lead contamination exceeding regulatory levels.

6.0 LIMITATIONS
Group Delta conducted this asbestos and lead survey of above ground conditions . No excavation or subsurface investigation was conducted to discover buried insulated piping and/or asbestos cement pipes concealed below the surface.

7.0 CLOSING
Group Delta Consultants performed the hazardous materials survey services in a manner consistent with that degree of care and skill ordinarily exercised by members of the same profession currently practicing under similar circumstances.

Conclusions and recommendations made regarding hazardous materials were based upon information obtained from samples and tests collected at specific locations, review of information provided to us, and professional judgment. Recommendations in this report were made based on conditions that Group Delta reasonably infer to exist between sampling points.

This report is intended as an informational resource for UCSD. Any contractor using this document assumes all responsibility for reviewing all available information and for verifying existing site conditions including location and extent of hazardous materials present at the Site.

Should any significant discrepancy between this report and existing conditions be discovered, the contractor shall notify the project manager, contracting officer, or inspector immediately.

If you have any questions or concerns regarding this document, please do not hesitate to call Jerry Sherman at 619-348-9145.

Asbestos and Lead Based Paint Survey 8
Fresno Chandler Airport
Fresno, CA

8.0 SIGNATURES AND QUALIFICATIONS OF ENVIRONMENTAL PROFESSIONALS Report prepared for Report reviewed for
City of Fresno by: City of Fresno by:

Jerry Sherman, LEED AP, CAC, CDPH David Raver, CAC, CDPH Hazardous Materials Division Manager Hazardous Materials Project Manager Certified Asbestos Consultant #97-2324 Certified Asbestos Consultant #18-6221 CDPH Lead I/A, #LRC00004015 CDPH Lead Sampling Tech., #LRC00005894

Figures

Customer: City of Fresno Project# EN8461A Location: Chandler Executive Airport Area: Large Hanger (FUT) Sampled by: David Raver Sample Date: 10-10-2024 & 11-19-2024 ASBESTOS & POSITIVE XRF SAMPLE LOCATION MAP = Roof Sample 39 3837
31-3330 363534
29 28
27 26
25 24
23 22
19 16-18
1013-15
12 11
09 08
07 50 47-49464544
41-43
40 21
20 Assumed Lead Based Paint on Structural Beams
51-5657-62
65 6463
POSXRF#38POSXRF#40POSXRF#36
D
C
B
A
CDABXRF Orientation
11/19 - 0111/19 - 0211/19 - 03

SECOND FLOOR OFFICE

Customer: City of Fresno Project# EN8461A Location: Chandler Executive Airport Area: Ex Hanger Sampled by: David Raver Sample Date: 10-10-2024 & 11-19-2024

ASBESTOS SAMPLE LOCATION MAP
11/19 - 04
01-03
11/19 - 0511/19 - 06
040506
11 12
10 9
8 76
5 4
3 2
1 Appendix A Asbestos Analytical Data and Sample Chain of Custody Record Forms

Appendix B - XRF Download for Lead-based Paint Testing

Viken Detection
Model Pb200i
Type XRF Lead Paint Analyzer
Serial Num. 1396
App Version Pb200i-5.3.1
# Concentration Units Date Quantity Component Substrate Side Condition Color INT/EXT Building 1 1.1 mg/cm2 10/10/2024 Calibrate
2 1 mg/cm2 10/10/2024 Calibrate
3 1 mg/cm2 10/10/2024 Calibrate
4 0.1 mg/cm2 10/10/2024 Door Metal C Intact Red Exterior Hanger 1 5 0.2 mg/cm2 10/10/2024 Wall Metal C Intact White Exterior Hanger 1 6 0.1 mg/cm2 10/10/2024 Door Metal C Intact Red Exterior Hanger 1 7 0 mg/cm2 10/10/2024 Door Casing Metal C Intact Red Exterior Hanger 1 8 0.3 mg/cm2 10/10/2024 Floor Metal C Intact Red Interior Hanger 1 9 0.3 mg/cm2 10/10/2024 Elec. Box/Panel Metal B Intact Red Interior Hanger 1 10 0.1 mg/cm2 10/10/2024 Wall Metal B Intact White Interior Hanger 1 11 0.1 mg/cm2 10/10/2024 Vertical Beam Metal A Intact Red Interior Hanger 1 12 0 mg/cm2 10/10/2024 Horizontal Beam Metal A Intact Red Interior Hanger 1 13 0.2 mg/cm2 10/10/2024 Shelf Metal B Intact Green Interior Hanger 1 14 0.1 mg/cm2 10/10/2024 Door Metal C Intact Brown Interior Hanger 1 15 1 mg/cm2 10/10/2024 Calibrate
16 1 mg/cm2 10/10/2024 Calibrate
17 1 mg/cm2 10/10/2024 Calibrate
18 0.9 mg/cm2 10/11/2024 Calibrate
19 1 mg/cm2 10/11/2024 Calibrate
20 1 mg/cm2 10/11/2024 Calibrate
21 0.1 mg/cm2 10/11/2024 Roof Metal West Intact White Exterior Hanger 2 22 0.3 mg/cm2 10/11/2024 Flashing Metal West Intact White Exterior Hanger 2 23 0.3 mg/cm2 10/11/2024 Wall Wood West Intact White Exterior Hanger 2 24 0.1 mg/cm2 10/11/2024 Rain Gutter Plastic West Intact White Exterior Hanger 2 25 0 mg/cm2 10/11/2024 Winow Casing Wood West Poor White Exterior Hanger 2 26 0.3 mg/cm2 10/11/2024 Window Metal West Intact White Exterior Hanger 2 27 0 mg/cm2 10/11/2024 Window Sill Wood West Poor White Exterior Hanger 2 28 0.2 mg/cm2 10/11/2024 Pipe Metal West Intact White Exterior Hanger 2 29 0.2 mg/cm2 10/11/2024 Roll up door Metal A Poor White Exterior Hanger 2 30 0.3 mg/cm2 10/11/2024 Wall Metal A Poor White Exterior Hanger 2 31 0.2 mg/cm2 10/11/2024 Wall Metal B Poor White Exterior Hanger 2 32 0.2 mg/cm2 10/11/2024 Wall Metal A Intact Brown Exterior Hanger 2 33 0.7 mg/cm2 10/11/2024 Conduit Metal A Intact White Exterior Hanger 2 34 0.2 mg/cm2 10/11/2024 Elec. Box/Panel Metal A Intact White Exterior Hanger 2 35 0.2 mg/cm2 10/11/2024 Wall Wood A Intact Brown Exterior Hanger 2 36 1.7 mg/cm2 10/11/2024 250SF V Beam Metal C Intact White Exterior Hanger 2 37 0 mg/cm2 10/11/2024 Hanger Door Metal C Intact White Exterior Hanger 2 38 2.2 mg/cm2 10/11/2024 250SF V Beam Wood C Poor White Exterior Hanger 2 39 0.2 mg/cm2 10/11/2024 V Beam Wood C Intact White Exterior Hanger 2 40 2.7 mg/cm2 10/11/2024 100SF Beam Wood C Poor Brown Exterior Hanger 2 41 0.3 mg/cm2 10/11/2024 Flashing Metal C Intact Brown Exterior Hanger 2 42 0.2 mg/cm2 10/11/2024 Door Metal C Intact Brown Exterior Hanger 2 43 0.2 mg/cm2 10/11/2024 Door Metal C Intact Green Interior Hanger 2 44 0.2 mg/cm2 10/11/2024 Floor Concrete Middle Intact Green Interior Hanger 2 45 0.4 mg/cm2 10/11/2024 Wall Metal C Poor Yellow Interior Hanger 2 46 0.3 mg/cm2 10/11/2024 Door Metal C Intact Clear (Stain Interior Hanger 2 47 0 mg/cm2 10/11/2024 Door Casing Wood B Intact Blue Interior Hanger 2 48 0.1 mg/cm2 10/11/2024 Wall Drywall B Intact White Interior Hanger 2 49 0.1 mg/cm2 10/11/2024 Door Wood B Intact Brown Interior Hanger 2 50 0.2 mg/cm2 10/11/2024 Door Jamb Wood B Intact White Interior Hanger 2 51 0.3 mg/cm2 10/11/2024 Door Jamb Drywall B Intact Blue Interior Hanger 2 52 0.1 mg/cm2 10/11/2024 Baseboard Wood B Intact White Interior Hanger 2 53 0.1 mg/cm2 10/11/2024 V Beam Wood C Intact White Interior Hanger 2 54 0.1 mg/cm2 10/11/2024 Winow Casing Wood C Intact Blue Interior Hanger 2 55 0.2 mg/cm2 10/11/2024 Door Wood C Intact Clear (Stain Interior Hanger 2 56 0.1 mg/cm2 10/11/2024 Wall Drywall B Intact White Interior Hanger 2 57 0.1 mg/cm2 10/11/2024 Wall Drywall C Intact White Interior Hanger 2 58 0.1 mg/cm2 10/11/2024 Wall Drywall D Intact White Interior Hanger 2 59 0.2 mg/cm2 10/11/2024 Door Wood C Intact White Interior Hanger 2 60 0.1 mg/cm2 10/11/2024 Door Jamb Wood C Intact White Interior Hanger 2 61 0.3 mg/cm2 10/11/2024 Wall Metal C Intact White Interior Hanger 2 62 0.2 mg/cm2 10/11/2024 Door Wood C Intact White Interior Hanger 2 63 0 mg/cm2 10/11/2024 Wall Drywall C Intact White Interior Hanger 2 64 0.1 mg/cm2 10/11/2024 Shelf Wood C Intact Blue Interior Hanger 2 65 0.2 mg/cm2 10/11/2024 Shelf Wood C Intact White Interior Hanger 2 66 0.3 mg/cm2 10/11/2024 Ceiling Wood Middle Intact White Interior Hanger 2 67 0.2 mg/cm2 10/11/2024 Ceiling Wood Middle Intact White Interior Hanger 2 68 0.1 mg/cm2 10/11/2024 Handrail Metal D Intact Tan Interior Hanger 2 69 0.1 mg/cm2 10/11/2024 Door Wood C Intact Red Interior Hanger 2 70 0.2 mg/cm2 10/11/2024 Door Casing Wood C Intact Red Interior Hanger 2 71 0.2 mg/cm2 10/11/2024 Wall Wood C Intact Red Interior Hanger 2 72 1.1 mg/cm2 10/11/2024 Calibrate
73 1 mg/cm2 10/11/2024 Calibrate
74 1 mg/cm2 10/11/2024 Calibrate

Appendix C - Consultant Certificates

STATE OF CALIFORNIA

DEPARTMENT OF PUBLIC HEALTH

LEAD-RELATED CONSTRUCTION CERTIFICATE
Disclaimer: This document alone should not be relied upon to confirm certification status. Compare the individual’s photo and name to another valid form of government issued photo identification. Verify the individual’s certification status by searching for Lead-Related Construction Professionals at ***.cdph.ca.gov/programs/clppb or calling (800) 597-LEAD INDIVIDUAL: CERTIFICATE TYPE: NUMBER: EXPIRATION DATE:

Lead Inspector/Assessor LRC-00004015 1/7/2026
Jerry Sherman

STATE OF CALIFORNIADEPARTMENT OF PUBLIC HEALTH

LEAD-RELATED CONSTRUCTION CERTIFICATE
Disclaimer: This document alone should not be relied upon to confirm certification status. Compare the individual’s photo and name to another valid form ofgovernment issued photo identification. Verify the individual’s certification status by searching for Lead-Related Construction Professionals at www.cdph.ca.gov/programs/clppb or calling (800) 597-LEAD INDIVIDUAL:CERTIFICATE TYPE: NUMBER: EXPIRATION DATE:

Lead Sampling Technician LRC-00005894 3/30/2025
David Raver

Attachment 2

Draft Phase II Environmental Site
Assessment

DRAFT PHASE II ENVIRONMENTAL SITE ASSESSMENT

PROPOSED AVIATION ACADEMY

FRESNO CHANDLER EXECUTIVE AIRPORT
716 WEST KEARNEY BOULEVARD

FRESNO, CALIFORNIA

Prepared for:

City of Fresno Airports Department
4995 East Clinton Way
Fresno, California 93727

Prepared by:

GROUP DELTA CONSULTANTS, INC.
133 Technology Drive, Suite 200
Irvine, California 92681
Tel: (949) 419-3030

Group Delta Project No. EN8461A
May 22, 2025

133 Technology Drive, Suite 200, Irvine, CA 92618 TEL: (949) 419-3030 www.GroupDelta.com

City of Fresno, Airports Department May 22, 2025
4995 East Clinton Way Project No. EN8461A
Fresno, California 93727

Attention: Ms. Cristal De La Torre

SUBJECT: DRAFT Phase II Environmental Site Assessment
Proposed Aviation Academy
Fresno Chandler Executive Airport
716 West Kearney Boulevard
Fresno, California

Dear Ms. Cristal De La Torre,

Group Delta Consultants, Inc. (Group Delta) is pleased to submit to City of Fresno , Airports Department (Client), this Phase I I Environmental Site Assessment (Phase I I ESA) for the subject property in Fresno, California. The Client requested the Phase II ESA based on the findings and recommendations from the Phase I ESA and Title V Hazard Review , in anticipation of proposed construction of an Aviation Academy. The Academy plans to construct a new conference center building within the footprint of the existing hangar building located at 716 West Kearney Boulevard.

We appreciate your selection of Group Delta for this project and look forward to assisting you further on this and other projects. If you have any questions, please do not hesitate to contact us.

Sincerely,
GROUP DELTA CONSULTANTS, INC.

Ryan Seelbach, CPESC, QSD Terry Otis, PG, CEG Associate Geologist Associate Geologist

A report prepared for:

City of Fresno Airports Department
4995 East Clinton Way
Fresno, California 93727

DRAFT Phase II Environmental Site Assessment
Proposed Aviation Academy, Fresno Unified School District Fresno Chandler Executive Airport
716 West Kearney Boulevard
Fresno, California

Prepared by:

Ryan Seelbach
Associate Geologist
Reviewed by:

Terry Otis, PG, CEG
Associate Geologist

Group Delta Consultants, Inc.
133 Technology Drive, Suite 200
Irvine, California 92681

Group Delta Project No. EN8461A
May 22, 2025
Phase II Environmental Site Assessment May 22, 2025
Proposed Aviation Academy Page i 716 West Kearney Boulevard
Fresno, California

TABLE OF CONTENTS

1.0 INTRODUCTION 1

1.1 Site Description 1

1.2 Background 1

1.3 Project Objectives 2

1.4 Site Geology 2

1.5 Site Hydrogeology 3

2.0 FIELD INVESTIGATION 4

2.1 Utility Clearance 4

2.2 Soil Sampling 4

2.2.1 Field Sampling Equipment 5

2.2.2 Sampling Procedures 5

2.3 Soil Vapor Sampling 6

2.3.1 Soil Vapor Probe Installation 6

2.3.2 Soil Vapor Probe Sampling 7

2.4 Waste Disposal 7

3.0 RESULTS OF LABORATORY TESTING 9

3.1 Soil Analyses 9

3.2 Soil Vapor Analyses 9

3.3 Screening Criteria 9

3.4 Soil Analytical Results 11

3.4.1 Metals 11

3.4.2 Total Petroleum Hydrocarbons (TPHs) 12

3.4.3 Semi Volatile Organic Compounds (SVOCs) 12

3.4.4 Volatile Organic Compounds (VOCs) 12

3.4.5 Organochlorine Pesticides (OCPs) 12

3.4.6 Polychlorinated Biphenyls (PCBs) 13

3.5 Soil Vapor Analytical Results 13

3.6 Quality Assurance and Quality Control (QA/QC) 14

4.0 DISCUSSION – LINES OF EVIDENCE FOR VAPOR INTRUSION RISKS 16

4.1 Site History 16

4.2 Soil Type and Chemical Data 16

4.3 Groundwater 17

4.4 Proposed Building Construction 17

5.0 CONCLUSIONS AND RECOMENDATIONS 18

6.0 REFERENCES 19

Phase II Environmental Site Assessment May 22, 2025
Proposed Aviation Academy Page ii 716 West Kearney Boulevard
Fresno, California

TABLE OF CONTENTS

FIGURES

Figure 1 – Site Location Plan
Figure 2 – Soil Vapor and Soil Sample Location Map

TABLES

Table 1 – Soil Analytical Results for Title 22 Metals
Table 2 - Soil Analytical Results for Lead Soluble Threshold Limit Concentrations (STLC) Table 3 - Soil Analytical Results for Organochlorine Pesticides (OCPs) Table 4 - Soil Analytical Results for Volatile Organic Compounds (VOCs) Table 5 - Soil Vapor Analytical Results for Volatile Organic Compounds (VOCs)

APPENDICES

Appendix A – Boring Log and Soil Vapor Probe Log (Typical) Appendix B – Waste Disposal Manifest
Appendix C1 – Laboratory Analytical Reports – Soil Samples Appendix C2 – Laboratory Analytical Reports – Soil Vapor Samples

DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 1 716 West Kearney Boulevard
Fresno, California

1.0 INTRODUCTION

City of Fresno Airports Department (Client) engaged Group Delta to conduct a Phase II ESA following the completion of a Phase I ESA, Title V Hazard Review. The assessment focuses on the two buildings located at 640 and 716 West Kearney Boulevard, a portion of APN 464-220-43T, in Fresno, California (Site). The location of the Site is shown on Figure 1. The Phase II ESA includes a soil and soil vapor investigation to evaluate potential chemical impacts to soil and soil vapor below the existing hangar building located at 716 West Kearney Boulevard.

1.1 Site Description

The Site is located in a mixed use aviation and residential area of Fresno and comprises approximate 3.34 -acres within a larger 55.86 -acre parcel of land that is part of the Fresno Chandler Executive Airport, a regional airport (Figure 1). The Site includes a corrugated metal T- hangar building built in 1960 at 640 West Kearney Boulevard, as well as an older hangar building at 716 West Kearney Boulevard built in 1948. The 1948 hangar consists of a concrete slab -on- grade foundation, painted wood and corrugated steel walls , and a pitched wood-shingled roof with composite shingles. This site has been occupied by multiple tenants including Lambe Piper Aircraft Sales, Ruiz Frank X Avionics, Buchner Aero Specialties, and Tom’s Flying Service. The remainder of the site consists of concrete-pavement, asphalt-pavement, landscaping areas with trees, shrubs, grass, and vacant land covered in grass.

1.2 Background
In preparation of construction of the proposed Aviation Academy , Group Delta conducted a Phase I ESA in accordance with the American Society for Testing and Materials E1527-21 (ASTM, 2021) (Group Delta, 2025). The Phase I ES A identified several environmental conditions related to current and past land use , including three recognized environmental conditions (RECs) and two other environmental considerations (OECs) associated with the existing 1948 hangar building outlined below:

• REC1 – A letter issued by the County of Fresno Department of Health to the City of Fresno dated August 29, 1991, confirmed the completion of a site inspection and/or remedial action regarding the release of hazardous substances or waste in relation to underground storage tanks ( USTs). No further action was required, and UST closure documentation does not include documentation indicating the presence or absence of a petroleum discharge.

• REC2 - Evidence of an exterior wash down area with a drain and single-chamber oil/water separator (OWS) was observed adjacent to the west side of the hangar building. The installation date of the washdown area and drain is unknown. The OWS drain is used to collect washdown water and separates oil, sludge , and debris collected into the drain DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 2
716 West Kearney Boulevard
Fresno, California

prior to entering the municipal sewer system. T he potential exists that the OWS may be breached, allowing oil and sludge to leak into subsurface media.

• OEC1 – Group Delta completed a Lead-Based Paint (LBP) survey to test for lead in building materials and to assess concentrations. Samples were collected from various interior and exterior areas that may be impacted by renovation/demolition. T he survey results confirmed the presence of LBP at the hangar.

• OEC2 - Group Delta completed an Asbestos Survey to test asbestos -containing materials (ACM) and to assess concentrations. The survey results confirmed that ACM was present in nine samples analyzed at the hangar.

Due to the historical nature of the hangar building, the RECs and OECs identified in the Phase I ESA, and the proposed redevelopment of the site for an Aviation Academy , the California Department of Toxic Substances Control (DTSC) requires a Phase II ESA in accordance with DTSC’s Interim Guidance, Evaluation of School Sites with Potential Soil Contamination as a Result of Lead from LBP, Organochlorine Pesticides (OCPs) from Termiticides, and Polychlorinated Biphenyls (PCBs) dated June 2006, to assess potential impacts.

1.3 Project Objectives

The objective of this subsurface investigation was to evaluate the RECs, OEC1, OCPs, and PCBs identified in the Phase I ESA and to address DTSC’s Interim Guidance for School Sites specifically related to hazardous materials, petroleum products , and other potential contaminants commonly found at airports and industrial sites . This assessment was conducted in accordance with the Interim Guidance for School Sites (DTSC, 2006). The investigation also included soil vapor sampling to detect the presence of volatile organic compound concentrations (VOC) concentrations and evaluate the potential for soil vapor intrusion into the indoor air of the proposed development. To achieve this objective, a comprehensive soil vapor investigation was conducted withi n the proposed building footprint to characterize the human health risks associated with vapor intrusion. The detected VOC concentrations in soil vapor, along with applicable regulatory screening criteria were used to estimate the potential health risks from vapor intrusion.

1.4 Site Geology
Based on the review of the Geologic Map of California, the Site is situated in the Great Valley Geomorphic Province of California (United States Geological Survey, 1977) . The Great Valley is DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 3
716 West Kearney Boulevard
Fresno, California

an alluvial plain about 50 miles wide and 400 miles long in the central part of California. Its northern part is the Sacramento Valley, drained by the Sacramento River , and its southern part is the San Joaquin Valley drained by the San Joaquin River. The Great Valley is a trough in which sediments have been deposited almost continuously since the Jurassic (about 160 million years ago) (Group Delta, 2024).

During Group Delta’s soil sampling event, a dark brown to reddish brown sandy silt to silty sand soil was encountered during drilling and sampling activities to a depth of 10 feet. The soil was firm and moist; however, no groundwater was encountered during the sampling event.

1.5 Site Hydrogeology
According to the California Department of Water Resources website referenced in 2024, the Site is in the Tulare Lake Hydrologic Region, San Joaquin Valley Groundwater Basin, Kings Subbasin.

The San Joaquin Valley is bordered by the Coast Ranges to the west, the San Emigdio and Tehachapi Mountains to the south, the Sierra Nevada to the east, and Sacramento-San Joaquin Delta and Sacramento Valley to the north.

The nearest surface water in the vicinity of the Site is Dry Creek, located approximately 0.50-mile northwest of the Site. According to conversations with airport staff, the City of Fresno operates a public water system that serves the Site vicinity. Additionally, the shallow groundwater beneath the Site is used for domestic purposes Based on data obtained from the California State Water Resources Control Board (SWRCB) GeoTracker database, the depth to groundwater beneath the Site is approximately 100 feet (ft) below ground surface (bgs) and flows in a southwesterly direction (SWRCB, 2024).

DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 4
716 West Kearney Boulevard
Fresno, California

2.0 FIELD INVESTIGATION

The field investigation consisted of concrete coring, hand auger borings, direct push drilling, and soil vapor probe installation for the collection of soil and soil vapor samples.

2.1 Utility Clearance

Prior to conducting the Site investigation, an initial site reconnaissance was performed to ensure accessibility and safety of sampling locations. Boring locations were marked in the field with white paint. Underground Service Alert of Northern California was notified of the field work at least 48 hours prior to the start to identify potential subsurface utility conflicts at the boring locations. BESS Utility Solutions of Freno, California cleared each marked boring location for subsurface utilities in advance of the field work.

2.2 Soil Sampling

Using hand augers and/or a truck mounted direct push drill rig, each boring was advanced to depths ranging from three to ten feet. A photo Ionization detector (PID) was used to screen soil samples retrieved from the borings for VOCs. Soil samples for analysis were selected based on PID readings, visual observations, and olfactory detection at various depths.

Soil borings were advanced at the following locations:
• REC2: Two soil borings were advanced on either side of the wash down drain OWS. • REC3: Two soil borings were advanced within the paint booth area. • OEC1: Six soil borings were advanced along the south and east sides of the hangar building and two borings on each side of the power pole.

Boring locations are shown in Figure 2. Soil borings were advanced to 5 ft bgs, with samples collected at 0.5, 1.0, 1.5, and 5.0 ft bgs. Discrete, composite and duplicate samples were collected during the investigation. Samples for assessing l ead-based paint (LBP) in soil were collected in accordance with California Code of Regulations (CCR), Title 22, Section 69105 (DTSC, 2006).

Group Delta assigned boring names based on the type of sample followed by sequential boring numbers. The letters “B” for borings and “SV” for soil vapor samples followed by a dash and the depth the sample was collected from in ft bgs (e.g., B4-1.5, SV3-5, etc.). Duplicate samples were collected during soil vapor sampling and labeled with the same sample name as the primary sample followed by “REP” (e.g., SV6-5 REP).

DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 5
716 West Kearney Boulevard
Fresno, California

2.2.1 Field Sampling Equipment

The following equipment was used:

1. A direct push rig was utilized to drill the soil vapor probe borings, All other borings were drilled using a hand auger.

2. Enough 8-ounce (oz) sealed glass jars with Teflon lined lids were provided by the analytical laboratory;

3. Personal Protective Equipment (PPE);

4. Deionized water;

5. Box cooler with ice for storage of the collected samples, and;

6. Self-adhesive labels and chain of custody sheets.

2.2.2 Sampling Procedures

Presented below is the sampling and decontamination methodology followed in the field:

1. The soil vapor borings were advanced using a direct-push drill rig. The direct -push drill rig used a percussion hammer to drive a 5-foot-long hollow steel rod lined with an acetate sleeve into the ground. As the rod was advanced into the ground, soil filled the acetate sleeve for sample collection. All other borings were advanced using a hand auger.

2. Borings were advanced to the first sampling depth.

3. All soil samples from hand -augered borings were collected in 8 -ounce glass jars. For the direct-push borings, soil samples were obtained by retrieving the acetate sleeve from the drill rod and cutting a 0.5 -foot-long section of the sleeve. Teflon sheets were placed at each end, and the sleeve was sealed with polyethylene end caps.

4. All soil samples were appropriately label with the boring number, sample depth, time, and date of collection;

5. Place samples on ice in the cooler box;

6. Decon equipment, utilizing deionized water and a concentrated detergent;

7. Repeat the procedure for remaining sample depths for each boring location;

8. Record a summary of the observations and general soil conditions for each boring;

9. Backfill borings with soil cuttings and native soil to meet the existing grade;

10. Patch boring with concrete and asphalt patch to match existing finish; DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 6
716 West Kearney Boulevard
Fresno, California

11. Collected a rinsate/equipment blank by pouring deionized water over the decontaminated sampling equipment and collecting it in a sample container at the end of each day for analysis;

12. Fill out chain-of-custody (COC) form, and;

13. Transport the samples on ice to a certified chemical testing laboratory.

2.3 Soil Vapor Sampling

The following is a description of the field activities including boring advancement and soil vapor probe installation and sampling. During all Site investigation activities, a Group Delta geologist, working under the direction of a California Professional Geologist, monitored the work and classified the soil types encountered according to the Unified Soil Classification System.

2.3.1 Soil Vapor Probe Installation

On February 5, 2025, Group Delta engaged Millennium Environmental Inc. of Anaheim, California, to advance eight borings inside and outside the hangar building for the installation of duel nested soil vapor probes (SV-1 through SV-8). Soil vapor probe SV-7 was installed in the western portion of the Site, to evaluate potential soil gas contamination associated with the use of the former exterior wash down area drain and single-chamber OWS. The soil vapor probes were installed to depths of 5 ft and 10 ft bgs except for vapor probe SV-6, which was installed at depths of 5 ft and 8 ft bgs due to overhead clearance restrictions. The location of the eight temporary dual-nested vapor probes are shown in Figure 2.

During boring advancement, soil was collected at depths of approximately 1.5, 3, 5 and 10 ft bgs.

The retrieved soil was placed in Ziploc baggies and prescreened for VOCs using a photoionization detector (PID). Soil types, PID values, and other pertinent geologic data were recorded on boring logs.

At each location, soil vapor probes were installed at 5 ft bgs and 10 ft bgs (8 ft bgs in SV-6). The vapor probes were constructed using a one-inch long airstone filter connected to ¼-inch diameter Teflon® tube. To ensure that the probe tips were placed at the target depths, a PVC rod was used to temporarily support the probes and tubing within the borehole. A one -foot thick sand pack was placed around each probe, followed by six inches of dry bentonite. To seal the annular space, hydrated bentonite was placed to either the next probe depth or to the ground surface.

To protect the vapor probes and provide access for future sampling, each probe tip was sealed within a Ziploc baggie using tape and coiled within the borehole. Clean No. 3 sand was placed around the probes followed by a thin layer of concrete at the ground surface. The vapor probe completion details are provided on the boring log in Appendix A.

DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 7
716 West Kearney Boulevard
Fresno, California

The soil generated during the drilling activities was temporarily stored on -site until transportation and disposal to an off-site treatment facility was determined.

2.3.2 Soil Vapor Probe Sampling

On February 20, 2025, soil vapor samples were collected in accordance with DTSC’s Advisory for Active Soil Gas Investigations (DTSC, 2015). Sampling was conducted a minimum of 48 hours after probe installation to allow subsurface conditions to equilibrate. Vapor probe purging and sample collection was conducted by Jones Environmental Inc. (Jones) of Santa Fe Springs, California.

Initially, a shut -in test was conducted to check for leaks in the above -ground sampling system following the assemblage of the above-ground valves, lines, and fittings to the top of each of the vapor probes. With the valve at the top of the vapor probe pl aced in the closed position, the system was evacuated to a minimum of 100 inches of water using a purge pump. A vacuum gauge connected to the system was observed for at least one minute to ensure no observable loss of vacuum.

Once the shut- in test was completed, each of the newly installed nested vapor probes was purged. Approximately three purge volumes were removed from each vapor probe using a constant flow rate between 100 and 200 milliliters per minute at a vacuum less tha n 100 inches of water. One purge volume is defined as the combined internal volume of the tubing, the void space of the sand pack around the probe, and void space of the dry bentonite in the annular space.

After removing the three purge volumes from each vapor probe, a vapor sample was collected from each location with a syringe. During sample collection, the vacuum pressure was recorded and samples were not collected if the vacuum pressure exceeded 136 inches of water column (10 inches of mercury).

Leak testing was performed using tracer compounds (n- pentane, n-hexane, n-heptane). A rag sprayed with the compounds and placed at the surface of the boring around all connections. The tracer compounds were re-applied every 10 minutes during purging and sampling. The soil vapor samples were analyzed for the presence of the tracer compounds, and corrective action s were implemented if the tracer compounds were detected at a concentration more than or equal to 10 times the method reporting limits.

2.4 Waste Disposal

Soil cuttings generated during drilling activities were placed in two 55-gallon metal drums , labeled, and stored on -site. A soil sample was collected and analyzed, with results confirming DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 8
716 West Kearney Boulevard
Fresno, California

that the soil could be disposed of as non-hazardous waste. The drums were transported off site on April 18, 2025. The non-hazardous waste disposal documentation is provided as Appendix B.

DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 9
716 West Kearney Boulevard
Fresno, California

3.0 RESULTS OF LABORATORY TESTING

The results of the laboratory analysis are presented in the laboratory analytical reports provided as Appendix C1 and C2 . The reports include copies of the completed COC forms, laboratory analytical results, the quality control sample (field and laboratory) results, and a narrative of any deviations and corrective actions taken.

3.1 Soil Analyses

All s oil samples collected during the investigation were transported to Eurofins Environment Testing (Eurofins) located in Tustin, California for laboratory analysis. Eurofins is a laboratory certified by the State Water Resources Control Board’s (SWRCB) Environmental Laboratory Accreditation Program (ELAP). The s oil samples were analyzed for the following combination of analyses depending upon the type of environmental condition that was being investigated. The analysis for each soil sample is listed in Tables 1 through 4.

• Title 22 Metals by EPA Method 6010B/7471A [3 samples from REC2, 4 samples from REC3] • Total lead by EPA Method 6010B [12 samples from OEC1] • California Waste Extraction Test (CA- WET) test was conducted to determine the Soluble Threshold Limit Concentration (STLC) [4 samples from OEC1] • Total Petroleum Hydrocarbons (TPHs) by EPA Method 8015B [3 samples from REC2, 4 samples from REC3]
• Semi Volatile Organic Compounds (SVOCs) by EPA Method 8270C [3 samples from REC2, 4 samples from REC3]
• Volatile Organic Compounds (VOCs) by EPA Method 8260B [4 samples from REC2, 4 samples from REC3]
• Organochlorine Pesticides (OCP) by EPA Method 8081A [4 composite samples for DTSC, 2006]
• Polychlorinated Biphenyls (PCBs) by EPA Method 8082A [4 samples for DTSC, 2006]

3.2 Soil Vapor Analyses

The soil vapor samples were collected and analyzed by Jones Environmental, Inc. (Jones) on February 20 , 202 5. All vapor samples were analyzed for TPH gasoline (TPHg) and VOCs in accordance with EPA Method 8260 on-site using their mobile laboratory, which is certified by the SWRCB ELAP.

3.3 Screening Criteria

The following criteria were used to assist with the review of the analytical data for soil and soil vapor. The screening criteria cited in this section were compared to the laboratory results. The most applicable criteria were selected for each media and analyte.

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• The Department of Toxic Substances Control ( DTSC) Human and Ecological Risk Office (HERO) modified screening levels (DTSC-SLs) in soil are screening concentrations used to evaluate the exposure risk of chemicals to human health during a human health risk assessment (HHRA). The DTSC-SLs were most recently updated in May 2022. DTSC-SLs developed for residential land use were applied to metal, OCP, and VOC concentrations in soil, as well as VOC concentrations in soil vapor (DTSC, 2022).

• The DTSC Interim Guidance Evaluation of School Sites with Potential Soil Contamination as a Result of lead from LBP was revised on June 9, 2006. The screening value for lead in soil from LBP at proposed school sites was changed in 2007. According to the most recent version of the Lead Risk Assessment Spreadsheet (dated 2011), the recommended residential soil lead screening level (DTSC -SL) is 80 milligrams per kilogram ( mg/kg), as stated in the DTSC HHRA Note 3 (DTSC, 2011a).
• The EPA Regional Screening Levels ( RSLs) are screening concentrations of chemicals in soil, water, and ambient air and represent thresholds of concern for risks to human health developed by the EPA. The thresholds of concern used to develop the RSLs for soil equate to lifetime cancer risk of one in a million and a hazard quotient of 1.0 for non -cancer health effects. The EPA RSLs were developed using exposure information assumptions combined with EPA toxicity data. The EPA RSLs were most recently updated in November 2024. The EPA RSLs developed for residential land use were applied to metal, OCP, and VOC concentrations in soil, as well as VOC concentrations in soil vapor (EPA, 2024). • Detected lead concentrations in soil were compared to State and Federal criteria for hazardous waste provided in California Code of Regulations (CCR) Title 22, Section 66261.24, to determine the appropriate waste classification and disposal requirements.

Total concentrations were compared to the Total Threshold Limit Concentration (TTLC) criteria for California hazardous waste. Total concentrations were also compared to 10 times the STLC and 20 times Federal TCLP concentration to determine if further waste extraction laboratory analyses were warranted to properly characterize the material as California or Federal hazardous waste.

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3.4 Soil Analytical Results

The soil analytical results of this investigation are summarized in Tables 1 through 4 and described in the following subsections. The laboratory reports for all soil samples are provided as Appendix C1.

3.4.1 Metals

A total of 7 soil samples were collected and analyzed for metals. Soil analytical results for metals are presented in Table 1. All 7 samples contained detectable concentrations of one or more metals (other than lead) including barium, chromium, cobalt, copper, nickel, vanadium, and zinc.

All detected concentrations for these metals were below the residential EPA RSLs and the residential DTSC-SLs. Arsenic and lead results are discussed below.

Arsenic

Arsenic was not detected in any of the samples collected; however, it should be noted that the residential EPA RSLs and residential DTSC-SLs are below the laboratory reporting limits (RLs).

Arsenic was not detected above the maximum laboratory RL of less than 3.27 mg/kg in any of the soil samples collected. However, b ecause arsenic is naturally occurring in soil in California, the DTSC has determined the upper -bound background arsenic concentration to be 12 mg/kg and generally accepts this concentration as a useful screening value for evaluating arsenic as a chemical of potential concern. Accordingly , a screening level of 12 mg/kg was used to evaluate arsenic concentrations at the Site, and no samples exceeded this screening level.

Lead

A total of 19 soil samples collected were analyzed for lead. Soil analytical results for lead are also presented in Table 1 . Lead was detected above the laboratory RL in 14 of the 19 samples analyzed. Lead concentrations ranged from 3.07 mg/kg in SV7-1’ to 543 mg/kg in B2-0.5’ with an average detected concentration of approximately 103.3 mg/kg.

The DTSC-SL for lead in residential soil is 80 mg/kg. This screening level was exceeded in five samples: B1-1.5’, B2-0.5’, B2-1.5’, B3-0.5’, and B6-0.5’.

Soluble Lead – Soluble Threshold Limit Concentration (STLC)

A total of 4 soil samples contained total lead concentrations that were greater than or equal to the 50 mg/kg threshold, which requires the samples to be analyzed for soluble lead using the CA- WET method. A summary of these results is presented in Table 2.

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Detectable concentrations using CA -WET ranged from 2.31 mg/L in sample B1 -1.5’ at 1.5 ft bgs to 23.1 mg/L in sample B2-0.5’ at 0.5 ft bgs, with an average concentration of approximately

10.17 mg/L. Three of the 4 samples exceeded the STLC threshold of 5 mg/L, meeting the criteria for non-RCRA California hazardous waste.

The California total threshold limit concentration (TTLC) is the threshold used as criteria for non- Resource Conservation and Recovery Act (non -RCRA) California hazardous waste. No lead concentrations were detected in any of the soil samples above the California TTLC of 1,000 mg/kg.

It should be noted that 4 samples contained total lead concentrations that were greater than or equal to the 100 mg/kg threshold which requires samples to be analyzed for soluble lead using the EPA TCLP method. However, due to a sample holding time discrepancy, these samples could not be analyzed using the EPA TCLP method. As a result, it could not be determined whether the samples exceeded the TCLP threshold of 5 mg/L , which is used as criteria for RCRA Federal hazardous waste.

3.4.2 Total Petroleum Hydrocarbons (TPHs)

A total of 7 soil samples were collected and analyzed for TPHs. None of the samples exceeded the laboratory RLs.

3.4.3 Semi Volatile Organic Compounds (SVOCs)

A total of 7 soil samples were collected and analyzed for SVOCs . None of the samples exceeded the laboratory RLs.

3.4.4 Volatile Organic Compounds (VOCs)

A total of 8 soil samples collected were analyzed for VOCs. Soil analytical results for VOCs are presented in Table 4 . Acetone was the only VOC detected above the laboratory’s RL in 3 of 8 samples collected and ranged from 21 µg/kg in B9-5’ to 76 µg/kg in SV8-5’. All three detections of acetone were from 5 ft bgs. None of the samples collected exceeded the residential screening levels.

3.4.5 Organochlorine Pesticides (OCPs)

A total of 4 composite soil samples were collected and analyzed for OCPs from 0.5 and 3.0 ft bgs.

Soil analytical results for OCPs are presented in Table 3. A total of 11 OCPs were detected above the laboratory’s RLs in the 2-0.5 ft bgs composite soil samples collected. The OCPs included 4,4’- Dichlorodiphenyldichloroethane (4,4’ -DDD), 4,4’ -Dichlorodiphenyldichloroethylene (4,4’ -DDE), 4,4'-Dichlorodiphenyltrichloroethane (4,4’-DDT), alpha-Chlordane, Beta-hexachlorocyclohexane DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 13
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(beta-BHC), Chlordane, Endosulfan II, Endrin ketone, gamma -Chlordane, Methoxychlor, and Toxaphene. None of the samples collected exceeded the residential screening levels. It should be noted sample COMP (B4-B-6-0.5’) exceeded its holding time.

3.4.6 Polychlorinated Biphenyls (PCBs)

A total of 4 soil samples were collected and analyzed for PCBs . None of the samples exceeded the laboratory RLs.

3.5 Soil Vapor Analytical Results

Soil vapor samples were collected at 5, 8and 10 feet bgs (8 ft bgs probe in SV-6 due to an overhead clearance issue) were analyzed for TPHg and VOCs by EPA Method 8260. A total of 16 primary and 2 duplicate soil vapor samples were collected and analyzed for VOCs by EPA 8260. A total of 5 VOC compounds were reported with “J” flag s indicating concentrations were above the laboratory method detection limit (MDL) but below the laboratory RLs. A summary of the detected compounds is provided below.

• Tetrachloroethene (PCE) was detected in 7 of the 18 vapor probes sampled at concentrations ranging from 2 to 8 µg/m3 in borings SV3, SV7, and SV8. • Toluene was detected in 3 of the 18 vapor probes sampled at concentrations ranging from 2 to 4 µg/m3 in borings SV3 and SV6.
• 1,2,4-Trimethylbenzene was detected in 2 of the 18 soil vapor probes sampled at concentrations ranging from 5 to 6 µg/m3 in boring SV6. • 1,3,5-Trimethylbenzene was detected in 1 of the 28 soil vapor samples (SV -5-5’) at a concentration of 4 µg/m3 in boring SV6.
• o-Xylene was detected in 2 of the 18 soil vapor probes sampled at concentrations ranging from 4 to 5 µg/m3 in boring SV6.

Soil vapor analytical results for VOCs are presented in Table 5 and the laboratory reports are provided in Appendix C2.

3.5.1 Future Potential Soil Vapor Intrusion Risks

Potential future vapor intrusion risks are assessed by utilizing DTSC’s modified Johnson & Ettinger screening model. The DTSC model estimates indoor air concentrations resulting from the migration of subsurface vapors into indoor air. DTSC updated the mode l to ensure consistent assumptions across various state agencies and republished it in October 2024 (DTSC, 2024). In February 2023, the California Environmental Protection Agency (CalEPA) Vapor Intrusion Workgroup, which includes members from the DTSC, the San Francisco Bay Regional Water Quality Control Board, the Santa Ana Regional Water Quality Control Board, the State Water Resources Control Board (SWRCBs), and the Office of Environmental Health Hazard Assessment, DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 14
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released the Supplemental Guidance: Screening and Evaluating Vapor Intrusion (Final Draft Supplemental Guidance) (DTSC and SWRCBs, 2023). Practitioners are encouraged to use this supplemental guidance alongside the existing DTSC Vapor Intrusion Guidance (DTSC, 2011b).

The attenuation factor (AF) is defined as the ratio between indoor air and subsurface soil vapor concentrations. Therefore, a larger AF applied to a given subsurface soil vapor concentration will result in a larger estimated indoor air concentration.

The potential risks to human health from vapor intrusion of VOCs to indoor air were evaluated by applying the USEPA 2012 AF of 0.03 to the soil vapor results and comparing directly with the State and Federal screening levels for residential indoor air for c ancer and non-cancer risks. The AF of 0.03 represents the current recommended value for screening soil vapor results in the Final Draft Supplemental Guidance (DTSC and SWRCB, 2023).

3.5.2 Predicted Indoor Air

By applying the AF of 0.03, the predicted indoor air concentrations were compared to the appropriate residential DTSC-SLs and EPA RSLs for direct exposure to indoor air as an initial step for site screening criteria. The five VOCs detected in soil vapor were all below the s oil vapor screening levels (SVSLs) calculated assuming the lowest residential indoor air screening value divided by the DTSC -recommended AF of 0.03 as a conservative approach for this initial evaluation to assess the potential for vapors entering the hangar building ( DTSC and SWRCB, 2023). None of the five detected VOC compounds exceeded this initial step for site screening criteria.

3.6 Quality Assurance and Quality Control (QA/QC)

Group Delta , Eurofins , and Jones Environmental applied Quality Assurance/Quality Control (QA/QC) measures to minimize and control errors associated with field and laboratory methods.

A review of the laboratory QA/QC results indicates satisfactory data reporting, and the data is of sufficient quality for the purposes of this report.

Soil Sample QA/QC

An equipment blank sample (EQB-0205) was collected and analyzed as a measure of accuracy of the field techniques and to determine if any contamination was introduced through sample collection or decontamination procedures. Sample EQB-0205 was collected by pouring deionized water over or through the decontaminated sampling equipment at the end of the day . The equipment blank was analyzed for metals, TPHs, and VOCs. There was no detection of metals or TPHs in the equipment blank sample ; however, four VOCs were detected slightly above the laboratory RLs. A summary of the detected compounds is provided below.

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• Acetone was detected at a concentration of 30 micrograms per liter (µg/L) with a RL of 10 µg/L.
• Bromodichloromethane was detected at a concentration of 5.6 µg/L with a RL of 1.0 µg/L. • Chloroform was detected at a concentration of 4.3 µg/L with a RL of 1.0 µg/L. • Dibromochloromethane was detected at a concentration of 6.4 µg/L with a RL of 2.0 µg/L.

Since acetone was detected in three soil samples collected prior to EQB-0205, it is possible some level of cross -contamination may have occurred during the investigation. The other three VOC compounds were not detected in soil samples. These VOCs are typically related to disinfectant byproducts found in chlorinated water. It is possible that the equipment blank had trace levels of disinfectant byproducts. Since only trace acetone concentrations were detected in the soil samples at several orders of magnitude below screening levels, these equipment blank detections did not interfere with the data quality.

Soil Vapor Sample QA/QC

Duplicate soil vapor samples were collected at a rate of approximately one duplicate per ten primary soil vapor samples. Analytical results for duplicate samples were generally consistent with the results for the associated primary samples and indicated there was an acceptable correlation between these two data sets for the detected analytes . The results of duplicate soil vapor samples are presented in Table 5.

A review of the Jones Analytical laboratory’s internal QA/QC analysis of continuing calibration verification (CCV), analytical method blanks, laboratory control standards (LCS), and matrix spike/matrix spike duplicate (MS/MSD) samples indicate no deviations from internal laboratory QC limits. Laboratory QA/QC data are presented in Appendix C2.

A tracer gas (leak check) 1,1 -DFA was used as a leak detection compound during soil vapor sampling. Soil vapor samples were analyzed for the presence of 1,1-DFA by EPA Method 8260.

The tracer gas was not detected in the soil vapor samples.

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4.0 DISCUSSION – LINES OF EVIDENCE FOR VAPOR INTRUSION RISKS

The DTSC recommends using multiple lines of evidence to provide a better understanding of the vapor intrusion risks (DTSC and SWRCB, 2023). Lines of evidence available for a site may include site history information, subsurface sampling data, contaminant subsurface source, soil type, and proposed building construction. The multiple lines of evidence are discussed below.

4.1 Site History

The Phase I ESA identified three RECs in connection with the hangar building at the Site that could potentially impact the soil vapor conditions; 1) a former UST without proper closure documentation, including its location and contents, was reportedly removed from the hangar building’s address in 1991; 2) a wash down area with a drain and single -chamber OWS was observed west of the building; and 3) a spray paint booth was observed within the northwest portion of the building. Based on the results of this investigation, none of these potential sources appear to have impacted subsurface soil vapor conditions at the Site

4.2 Soil Type and Chemical Data

Soils encountered during this Site investigation consisted mainly of a brown sandy silt to silty sand that was observed to a maximum depth of 10 ft bgs (total depth drilled). In general, coarse- grained soils (e.g., sands, gravels) allow for greater vapor migration than fine-grained soils (e.g., silts, clays) (DTSC and SWRCB, 2023). The soils present a moderate degree of vapor migration potential at the Site.

VOCs were not detected in headspace of all soil samples collected, as measured in the field with the PID. Acetone was the only VOC detected in 3 of 8 soil samples at concentrations of several orders of magnitude below their representative residential EPA RSL and DTSC-SL.

Seven soil vapor probes were installed inside the hangar building to evaluate the subsurface soil vapor conditions at a rate of one probe for every 1,400 square feet, representing a high frequency of sampling. Samples were collected at approximately 5 and 10 feet bgs at each probe location.

Consequently, residual soil vapor VOCs were delineated both laterally and vertically. Additionally, the five VOCs detected in soil vapor were all reported below the laboratory reporting limits but above the method detect ion limits (J- flag). SVSLs were calculated using the lowest residential indoor air screening value divided by the DTSC -recommended attenuation factor (AF) of 0.03 as a conservative approach for this evaluation to assess the potential for vapors entering the hangar building (DTSC and SWRCB, 2023). None of the five detected VOC compounds exceeded this initial step for site screening criteria.

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4.3 Groundwater

Groundwater sampling was not conducted as part of this investigation and no prior groundwater sampling data is available. Groundwater was not encountered during the investigation and is reportedly present at approximately 100 feet bgs at the Site. Based on the soil vapor data, residual VOC concentrations do not increase with depth, which indicates that a deeper source is not present.

4.4 Proposed Building Construction

Although the details of the proposed construction and renovation of the existing hangar building are unknown, the planned use is for a conference center constructed within the existing building footprint. The current slab-on-grade hangar building features a high ceiling, allowing for optimal indoor ventilation. New building construction with an undamaged slab and proper indoor air ventilation will reduce exposure risk. Unfortunately, building conditions can change over time, and no building should be consid ered inherently safe. Additionally, sanitary sewers, drains, electrical pipes, and other conduits may present preferential pathways for vapor intrusion (DTSC and SWRCB, 2023). However, based on the initial site screening, there is no significant risk of vapor intrusion in the building subsurface.

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5.0 CONCLUSIONS AND RECOMENDATIONS

Group Delta performed a Phase I ESA for the proposed redevelopment to an Aviation Academy.

The Phase I ES A identif ied several RECs associated with current or past land use and recommended further investigation of the existing 1948 hangar building located at 716 West Kearney Blvd ( Group Delta, 2024 ). This Phase II ESA assessed RECs identified in the hangar building that is being considered for restoration and use as a conference center.

Soil samples were analyzed for lead (12 samples), metals (7 samples), TPHs (7 samples), SVOCs (7 samples), VOCs (8 samples), OCPs (4 composite samples), and PCBs (4 samples). The only soil samples exceeding regulatory screening levels were those analyzed for total l ead that were collected within dripline of the existing hangar building . Five of the twelve samples collected within the dripline exceed the DTSC -SL of 80 mg/kg for residential soil and several of these samples met the criteria for California hazardous waste. Further action is warranted as part of the proposed site redevelopment to remove soils around the dripline that exceed 80 mg/kg of lead. The potential presence of lead in soil within the dripline will be retained as a REC. All other soil samples were below regulatory screening levels.

A total of 16 primary and 2 field duplicate soil vapor samples were analyzed for VOCs by EPA 8260. Five VOCs were detected in soil vapor at low concentrations below the laboratory RL and did not exceed SVSLs calculated assuming the lowest residential indoor air screening value divided by the DTSC -recommended AF of 0.03 as a conservative approach for this initial evaluation of the potential for vapors entering the hangar building (DTSC and SWRCB, 2023).

Based on the Phase II ESA investigation results and the multiple lines of evidence, the Site
presents a low vapor intrusion risk, and no additional characterization is recommended to assess the potential for future soil vapor intrusion at this time . In addition, Group Delta does not recommend mitigation measures to reduce the risks associated with the residual VOCs detected in shallow soil vapor based on current data.

DRAFT Phase II Environmental Site Assessment May 22, 2025 Fresno Chandler Executive Airport Page 19
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6.0 REFERENCES

American Society for Testing and Materials (ASTM), 2021. Phase I Environmental Site Assessments (ESAs). E1527-21 – Standard Practice for Environmental Site Assessments:

Phase I Environmental Site Assessment Process. November 1.

California Department of Toxic Substances Control (DTSC). California Code of Regulations, title 22, section 69105, “Sampling for Lead in Soil from Lead-based Paint.” June 2006.

DTSC, 2006. Interim Guidance, Evaluation of School Sites with Potential Soil Contamination as a Result of Lead from lead based paint , Organochlorine Pesticides from Termiticides, and Polychlorinated Biphenyls, June.

DTSC, 2011a. Interim Guidance Evaluation of School Sites with Potential Soil Contamination as a Result of lead from lead-based paint.

DTSC, (2011b). Vapor Intrusion Mitigation Advisory, October.

DTSC (2015). Advisory – Active Soil Gas Investigations, July.

DTSC, 2022. Human and Ecological Risk Office (HERO), Human Health Risk Assessment (HHRA) Note 3, DTSC-modified Screening Levels, May.

DTSC and State Water Resources Control Board , (2023). Final Draft, Supplemental Guidance:

Screening and Evaluating Vapor Intrusion, February.

California Department of Water Resources (DWR), 2024 www.dwr.ca.gov/

California State Water Resources Control Board (SWRCB) , 2024, GeoTracker Database. www.geotracker.waterboards.ca.gov

Environmental Protection Agency (EPA), 2024. Region 9 Regional Screening Level Summary Table.

November.

United States Geologic Survey, 1977. Geologic Map of California, California Division of Mines and Geology.

Group Delta Consultants, Inc. 2024. Phase I Environmental Site Assessment and Title V Hazard Review, Fresno Chandler Executive Airport, 640 and 716 West Kearny Blvd, Fresno, California , December 13.

Figures

GDC Project No. EN8461A
Site Location Map
Phase II Environmental Site Assessment
Proposed Aviation Academy
Fresno, California
Figure 1
Reference: Google Earth
Project Site
Site boundary
Multi-Family Apartment Complex
(621-809 W. Kearney Blvd.)
Dwelling
(883 W. Kearney Blvd.)
Aircraft Parking
Hangar Buildings
(548, 612, 648 and 668 W. Kearney Blvd.)
Hangar Building
(540 W. Kearney Blvd.)
Hangar Buildings
(716 ½, 760 and
800 W. Kearney Blvd.
716
640
SV1 SV3
SV5
SV2 SV4
SV7
SV6
SV8
B9
B7 B8
B1 B2 B3
B4
B5
B6
FILE PATH: \\10.75.80.6\Files$\Projects\_EN\EN8400\EN8461A City of Fresno - Phase I Hazmat\CAD\EN8461A.dwg PLOTTED DATE: 5/13/2025 1:02:16 PM SAVED BY: josemiguelt 0 80'40'
PROJECT NUMBER:

EN8461A
FIGURE NUMBER:
2SOIL VAPOR AND SOIL SAMPLE LOCATION MAP
DRAFTED BY:

JMT
REVIEWED BY:

RS
GROUP DELTA, AN NV5 COMPANY
1035 S. MILLIKEN AVENUE SUITE G
ONTARIO, CA 91761

PHASE II ENVIRONMENTAL SITE ASSESSMENT

PROPOSED AVIATION ACADEMY
716 W. KEARNEY BLVD.

FRESNO, CALIFORNIA
LEGEND:

SOIL VAPOR LOCATION

SOIL SAMPLE LOCATION

SOIL VAPOR / SOIL SAMPLE LOCATION
REC2 - DRAIN/OIL WATER SEPARATOR
REC3 - PAINT BOOTH
OEC1 - AREA OF LEAD-BASED PAINT

IN EXPOSED SOIL

POWER POLE WITH

TRANSFORMER

Tables

Table 1
Soil Analytical Results for Title 22 Metals
EPA Test Method 6020/7471A
Phase II Environmental Site Assessment
Proposed Aviation Academy at Fresno Chandler Executive Airport Fresno, California
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium
Cobalt
Copper
Lead
Mercury
Molybdenum
Nickel
Selenium
Silver
Thallium
Vanadium
Zinc
B1-0.5' 2/5/2025 -- -- -- -- -- -- -- -- 14.0 -- -- -- -- -- -- -- -- B1-1.5' 2/5/2025 -- -- -- -- -- -- -- -- 159 -- -- -- -- -- -- -- -- B2-0.5' 2/5/2025 -- -- -- -- -- -- -- -- 543 -- -- -- -- -- -- -- -- B2-1.5' 2/5/2025 -- -- -- -- -- -- -- -- 304 -- -- -- -- -- -- -- -- B3-0.5' 2/5/2025 -- -- -- -- -- -- -- -- 91.5 -- -- -- -- -- -- -- -- B3-1.5' 2/5/2025 -- -- -- -- -- -- -- -- 22.7 -- -- -- -- -- -- -- -- B4-0.5' 2/5/2025 -- -- -- -- -- -- -- -- 64.4 -- -- -- -- -- -- -- -- B4-1.5' 2/5/2025 -- -- -- -- -- -- -- -- <1.78 -- -- -- -- -- -- -- -- B5-0.5' 2/5/2025 -- -- -- -- -- -- -- -- 58.1 -- -- -- -- -- -- -- -- B5-1.5' 2/5/2025 -- -- -- -- -- -- -- -- 4.68 -- -- -- -- -- -- -- -- B6-0.5' 2/5/2025 -- -- -- -- -- -- -- -- 171 -- -- -- -- -- -- -- -- B6-1.5' 2/5/2025 -- -- -- -- -- -- -- -- <2.27 -- -- -- -- -- -- -- -- B9-1' 2/5/2025 <9.32 <2.80* 90.6 <0.373 <0.373 23.2 5.63 9.06 4.77 <0.0833 <3.73 22.3 <2.80 <1.86 <9.32 23.4 20.4 SV6-1' 2/5/2025 <10.9 <3.26* 49.1 <0.434 <0.434 16.0 3.50 5.71 <2.17 <0.0801 <4.34 15.0 <3.26 <2.17 <10.9 17.3 12.8 SV6-5' 2/5/2025 <9.70 <2.91* 82.7 <0.388 <0.388 32.1 6.25 12.1 3.45 <0.0801 <3.88 33.5 <2.91 <1.94 <9.70 42.6 30.2 SV7-1' 2/5/2025 <8.82 <2.65* 74.9 <0.353 <0.353 23.5 5.57 8.36 3.07 <0.0850 <3.53 21.7 <2.65 <1.76 <8.82 24.6 19.0 SV7-5' 2/5/2025 <8.41 <2.52* 55.4 <0.337 <0.337 26.6 4.76 7.08 <1.68 <0.0868 <3.37 23.8 <2.52 <1.68 <8.41 23.2 16.6 SV8-1' 2/5/2025 <10.9 <3.27* 88.2 <0.436 <0.436 24.7 4.76 7.77 <2.18 <0.0850 <4.36 21.1 <3.27 <2.18 <10.9 22.8 17.9 SV8-5' 2/5/2025 <8.65 <2.59* 81.0 <0.346 <0.346 26.2 6.97 10.8 3.16 <0.0817 <3.46 32.0 <2.59 <1.73 <8.65 32.8 26.0 31 0.68 15,000 160 7.1 120,000 23 3,100 200 7.1 390 1,400 390 390 0.78 390 23,000 470 3.0 220,000 2,300 100 1,800,000 350 47,000 800 30 5,800 17,000 5,800 5,800 12 5,800 350,000 NL 0.41 NL 16 7.1 NL NL NL 80 1 NL 820 NL NL NL NL NL
NL 12** NL 230 79 NL NL NL 500 4.4 NL 11,000 NL NL NL NL NL 500 500 10,000 75 100 2,500 8,000 2,500 1,000 20 3,500 2,000 100 500 700 2,400 5,000 150 50 1,000 7.5 10 50 800 250 50 2.0 3,500 200 10 50 70 240 2,500 NL 100 2,000 NL 20 100 NL NL 100 4.0 NL NL 20 100 NL NL NL Notes:

EPA RSL = US Environmental Protection Agency Regional Screening Level (November 2024) DTSC SL = Department of Toxic Substance Control - Screening Level (May 2022) mg/kg = milligrams per kilogram
<0.0* = Laboratory reporting limit exceeds EPA RSL and/or DTSC SL for Residential Soil NL = not listed regulatory screening limit for constituent ** = Arsenic concentrations were evaluated using the DTSC-accepted upper-bound background level of 12 mg/kg X Indicates an exceedance of either the EPA RSL and/or the DTSC SL for residential soil X Indicates an exceedance of the EPA RSL for Commercial/Industrial Soil X Indicates an exceedance of the DTSC Background Concentration 20 x TCLP
BOLD = indicates detected concentration exceeding the laboratory reporting limit <0.0 = not detected above laboratory reporting limit
Sample ID Sample Date
Units: mg/kg
EPA RSL for Residential Soil
EPA RSL for Commercial/Industrial Soil
DTSC SL for Residential Soil
DTSC SL for Commercial/Industrial Soil
TTLC*
10 x STLC
TTLC = Total Threshold Limit Concentration
STLC = Soluble Threshold Limit Concentration
TCLP = Toxicity Characteristic Leaching Procedure

Page 1 of 5 ends

Table 2
Soil Analytical Results for Lead Soluble Threshold Limit Concentrations (STLC) EPA Test Method 6010B and CA-WET
Phase II Environmental Site Assessment
Proposed Aviation Academy at Fresno Chandler Executive Airport Fresno, California
Sample ID Sample
Date
Total Lead
(mg/kg)
Lead-STLC
CA-WET
(mg/L)
B1-1.5' 2/5/2025 159* 2.31
B2-0.5' 2/5/2025 543* 23.1
B2-1.5' 2/5/2025 304* 5.80
B6-0.5' 2/5/2025 171* 9.46
1,000 5.0
Notes:

Lead-STLC Lead Soluble Threshold Limit Concentrations
CA-WET California- Waste Extraction Test
mg/kg milligrams per kilogram
mg/L milligrams per liter
Bold indicates a detection
* greater than 50 mg/kg threshold requires additional waste characterization X indicates an exceedance of Hazardous Waste Criteria
Hazardous Waste Criteria
2 of 5
Table 3
Soil Analytical Results for Organochlorine Pesticides (OCPs) EPA Test Method 8081A
Phase II Environmental Site Assessment
Proposed Aviation Academy at Fresno Chandler Executive Airport Fresno, California
4,4'-DDD 4,4'-DDE 4,4'-DDT alpha-
Chlordane beta-BHC Chlordane Endosulfan II Endrin
ketone
gamma-
Chlordane Methoxychlor Toxaphene
COMP (B1-B3-0.5') 2/5/2025 17 62 320 21 44 p 150 14 8.9 28 6.6 p <75 COMP (B1-B3-3') 2/5/2025 <5.0 <5.0 <5.0 <5.0 <5.0 <25 <5.0 <5.0 <5.0 <5.0 <25 COMP (B4-B6-0.5') 2/5/2025 <5.0 6.8 H 64 H 58 H <5.0 290 H <5.0 <5.0 59 H <5.0 150 H, p COMP (B4-B6-3') 2/5/2025 <5.0 <5.0 <5.0 <5.0 <5.0 <25 <5.0 <5.0 <5.0 <5.0 <25 2,300 2,000 1,900 36,000 300 1,700 NL NL 36,000 320,000 490 9,600 9,300 8,500 500,000 1,300 7,700 NL NL 500,000 4,100,000 2,100 1,900 2,000 1,900 NL NL 1,700 NL NL NL 320,000 450
6,200 9,300 7,100 NL NL 6,100 NL NL NL 2,600,000 1,200
Notes:

EPA RSL = US Environmental Protection Agency Regional Screening Level (November 2024) DTSC SL = Department of Toxic Substance Control - Screening Level (May 2022) µg/kg = micrograms per kilogram
BOLD = indicates detected concentration exceeding the laboratory reporting limit <0.0 = not detected above laboratory reporting limit
Analytes not detected at or above the laboratory reporting limit were excluded from the results table Sample ID Sample Date
Units: µg/kg
p = the relative percent difference between the primary and confirmation column/detec COMP = composite soil sample
EPA RSL for Residential Soil
DTSC SL for Commercial/Industrial Soil
DTSC SL for Residential Soil
EPA RSL for Commercial/Industrial Soil
NL = no listed regulatory screening limit for constituent H = the sample was prepared or analyzed beyond the specified holding time and does no

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Table 4
Soil Analytical Results for Volatile Organic Compounds (VOCs) EPA Test Method 8260B
Phase II Environmental Site Assessment
Proposed Aviation Academy at Fresno Chandler Executive Airport Fresno, California
Sample ID Sample Date Units Acetone
B9-1' 2/5/2025 µg/kg <19
B9-5' 2/5/2025 µg/kg 21
SV6-1' 2/5/2025 µg/kg <19
SV6-5' 2/5/2025 µg/kg <25
SV7-1' 2/5/2025 µg/kg <20
SV7-5' 2/5/2025 µg/kg 31
SV8-1' 2/5/2025 µg/kg <19
SV8-5' 2/5/2025 µg/kg 76
µg/kg 70,000,000
µg/kg 1,100,000,000
µg/kg NL
µg/kg NL
Notes:
µg/kg = micrograms per kilogram
Bold = detected concentration at or above the laboratory reporting limit <0.0 = not detected above reporting limit
NL = not listed regulatory screening limit for constituent EPA RSL for Residential Soil
DTSC SL for Commercial/Industrial Soil
EPA RSL = US Environmental Protection Agency Regional Screening Level (November 2024) DTSC SL = Department of Toxic Substance Control - Screening Level (May 2022) EPA RSL for Commercial/Industrial Soil
DTSC SL for Residential Soil

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Table 5
Soil Vapor Analytical Results for Volatile Organic Compounds (VOCs) EPA Test Method 8260B
Phase II Environmental Site Assessment
Proposed Aviation Academy at Fresno Chandler Executive Airport Fresno, California
Tetrachloroethene Toluene 1,2,4-
Trimethylbenzene
1,3,5-
Trimethylbenzene o-Xylene
SV1-5' 2/20/2025 <8 <8 <8 <8 <8
SV1-9.5' 2/20/2025 <8 <8 <8 <8 <8
SV2-5' 2/20/2025 <8 <8 <8 <8 <8
SV2-9.5' 2/20/2025 <8 <8 <8 <8 <8
SV3-5' 2/20/2025 2 J <8 <8 <8 <8
SV3-5' REP 2/20/2025 8 J 4 J <8 <8 <8
SV3-9.5' 2/20/2025 3 J <8 <8 <8 <8
SV4-5' 2/20/2025 <8 <8 <8 <8 <8
SV4-9.5' 2/20/2025 <8 <8 <8 <8 <8
SV5-5' 2/20/2025 <8 <8 <8 <8 <8
SV5-9.5' 2/20/2025 <8 <8 <8 <8 <8
SV6-5' 2/20/2025 <8 2 J 6 J <8 4 J
SV6-5' REP 2/20/2025 <8 3 J 5 J 4 J 5 J
SV6-8' 2/20/2025 <8 <8 <8 <8 <8
SV7-5' 2/20/2025 2 J <8 <8 <8 <8
SV7-9.5' 2/20/2025 6 J <8 <8 <8 <8
SV8-5' 2/20/2025 2 J <8 <8 <8 <8
SV8-9.5' 2/20/2025 6 J <8 <8 <8 <8
11 NL NL NL NL
NL 5,200 63 63 100

0.46 NL NL NL NL
42 310 NL NL NL
15 10,333 2,100 2,100 3,333
Notes:

AF = Attenuation Factor
SL = Screening Level
µg/m³ = micrograms per cubic meters
BOLD = indicates detected concentration exceeding the method detection limit (MDL) <0.0 = not detected above laboratory reporting limit
J = Value less then practical quantitation limit (PQL) but greater than the MDL NL = not listed regulatory screening limit for constituent Analytes not detected at or above the laboratory reporting limit were excluded from the results tables Indicates lowest screening value of the DTSC-SLs and EPA RSLs for residential air Sample ID Sample Date
Units: µg/m³
EPA RSL = US Environmental Protection Agency Regional Screening Level for Residential Air, TR=1E-06, HQ=1.0 (November 2024) DTSC Hero Note 3 = Department of Toxic Substance Control - Screening Level for Residential Air (May 2022) Cancer SL: DTSC Hero Note 3 - SL for Residential Air
Cancer SL: EPA RSL for Residential Air
Non-cancer SL: DTSC Hero Note 3 - SL for Residential Air Non-cancer SL: EPA RSL for Residential Air
Calculated SVSL (DTSC-Recommended AF = 0.03)
SVSL = Soil Vapor Screening Level calculated assuming the lowest residential indoor air screening value divided by the DTSC-recommended AF of 0.03 used for this initial evaluation of the potential for vapors entering the building per the DTSC Supplemental Vapor Intrusion Guidance (February 2023).

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Appendix A
Boring Log and Soil Vapor Probe Log (Typical)

SOIL VAPOR PROBE BORING Boring No. SV-1 (Typical) Sheet 1 of 1 Site Fresno Chandler Airport Date February 5, 2025
Address 716 Kearney Blvd Driller Millenium Environmental, Inc.

Fresno, CA Drilling Foreman
Project No. EN8461A Method Geoprobe 6011 DT hole diam.: 2.25 inches Logged By: Kevin Hall 9.5 feet bgs
casing: 1/4" Tubing screen: 1" air stone filter casing diam.: N/A screen slot: N/A NA
5' & 9.5'
Blow Descriptions of Materials PID
Type No. Count Time Recov. and Conditions (PPM)
- 4 to 5" of concrete
1 2
SM
3 4
SV1-5 0900 5 0
6 SM
7 8
9 SV1-9.5 0905 0
10 11
12 13
14 15
16 17
18 19
20 Comments:

Well Pack (#3
Sand): 4.5' to 5.5' & 8.5' to 9.5' Well Construction:

Total depth of boring:

Depth LITHO
COLUMN
Depth to Groundwater:

Probe Depths:

0.5' to 4.0' and 6.0' to 8.0'

4.0' to 4.5', 8.0' to 8.5'
Hydrated Bent.:

Granular Bentonite
Silty Sand, Dark Brown (10YR 3/3), fine to coarse grained, loose, no odor
Sandy Silt, Dark Brown (10YR 3/3), moist, stiff, fine grained, no odor
On 2-5-25, temporary vapor probes were installed at depths of 5- and 9.5-feet bgs using a Geoprobe Driect-Push drillrig.

Probe construction as shown, tubing for deeper probe has greater stick-up above ground. PID readings taken from
headspace inside Ziploc baggie. Two soil samples collected from each boring, but only selected samples were analyzed by the laboratory. Soil vapor samples were collected and anlayzed on 5-20-25.

Sample Sample
Scale
#3 Sand
Granular #8 Bentonite
Hydrated #8 Bentonite
Concrete Slab

Appendix B
Waste Disposal Manifest

Appendix C1
Laboratory Analytical Reports – Soil Samples

ANALYTICAL REPORT

PREPARED FOR
Attn: Mr. Kevin Hall
Group Delta Consultants, Inc
32 Mauchly
Suite B
Irvine, California 92618
Generated 3/26/2025 11:08:49 AM

JOB DESCRIPTION
Fresno Airport

JOB NUMBER
570-217080-2
See page two for job notes and contact information.

Tustin CA 92780
2841 Dow Avenue, Suite 100
Eurofins Calscience

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13 Eurofins Calscience
Eurofins Calscience is a laboratory within Eurofins Environment Testing Southwest, LLC, a company within Eurofins Environment Testing Group of Companies Job Notes
This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page.

The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins Calscience Project Manager.

Authorization
Generated
3/26/2025 11:08:49 AM
Authorized for release by
Carla Hollowell, Project Manager I
[email protected]
(714)895-5494

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13 Table of Contents
Client: Group Delta Consultants, Inc
Project/Site: Fresno Airport
Laboratory Job ID: 570-217080-2

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Eurofins Calscience
3/26/2025
Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1 2
3 4
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9 10
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13 Definitions/Glossary
Job ID: 570-217080-2Client: Group Delta Consultants, Inc Project/Site: Fresno Airport
Glossary
These commonly used abbreviations may or may not be present in this report. ☼ Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Calscience

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13 Job Narrative
570-217080-2
Analytical test results meet all requirementsof the associated regulatory program listed on the Accreditation/CertificationSummary Page unless otherwise noted under the individual analysis. Data qualifiers and/or narrative comments are included to explain any exceptions, if applicable.
· Matrix QC may not be reported if insufficient sample is provided or site-specific QC samples were not submitted. In these situations, to demonstrateprecision and accuracy at a batch level, a LCS/LCSD may be performed, unless otherwise specified in the method.
· Surrogate and/or isotope dilution analyte recoveries (if applicable) which are outside of the QC window are confirmed unless attributed to a dilution or otherwise noted in the narrative.

Regulated compliance samples (e.g. SDWA, NPDES) must comply with the associated agency requirements/permits.

Receipt
The samples were received on 2/6/2025 1:37 PM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperaturesof the 2 coolers at receipt time were 2.9°C and 3.9°C.

Metals
No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page.

Case Narrative
Client: Group Delta Consultants, Inc Job ID: 570-217080-2 Project: Fresno Airport
Eurofins Calscience
Job ID: 570-217080-2 Eurofins Calscience

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13 Detection Summary
Job ID: 570-217080-2Client: Group Delta Consultants, Inc Project/Site: Fresno Airport
Client Sample ID: B1-1.5 Lab Sample ID: 570-217080-6
Lead
RL

1.00 mg/L
Analyte Result Qualifier Unit Dil Fac D Method Prep Type STLC Citrate12.31 6010B
Client Sample ID: B2-0.5 Lab Sample ID: 570-217080-8
Lead
RL

1.00 mg/L
Analyte Result Qualifier Unit Dil Fac D Method Prep Type STLC Citrate123.1 6010B
Client Sample ID: B2-1.5 Lab Sample ID: 570-217080-9
Lead
RL

1.00 mg/L
Analyte Result Qualifier Unit Dil Fac D Method Prep Type STLC Citrate15.80 6010B
Client Sample ID: B6-0.5 Lab Sample ID: 570-217080-20
Lead
RL

1.00 mg/L
Analyte Result Qualifier Unit Dil Fac D Method Prep Type STLC Citrate19.46 6010B
Eurofins Calscience
This Detection Summary does not include radiochemical test results.

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13 Client Sample Results
Job ID: 570-217080-2Client: Group Delta Consultants, Inc Project/Site: Fresno Airport
Method: SW846 6010B - Metals (ICP) - STLC Citrate
Lab Sample ID: 570-217080-6Client Sample ID: B1-1.5
Matrix: SolidDate Collected: 02/05/25 08:12
Date Received: 02/06/25 13:37
RL

2.31 1.00 mg/L 03/24/25 10:08 03/24/25 12:29 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Lead
Lab Sample ID: 570-217080-8Client Sample ID: B2-0.5
Matrix: SolidDate Collected: 02/05/25 08:16
Date Received: 02/06/25 13:37
RL

23.1 1.00 mg/L 03/24/25 10:08 03/24/25 12:36 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Lead
Lab Sample ID: 570-217080-9Client Sample ID: B2-1.5
Matrix: SolidDate Collected: 02/05/25 08:18
Date Received: 02/06/25 13:37
RL

5.80 1.00 mg/L 03/24/25 10:08 03/24/25 12:39 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Lead
Lab Sample ID: 570-217080-20Client Sample ID: B6-0.5
Matrix: SolidDate Collected: 02/05/25 08:50
Date Received: 02/06/25 13:37
RL

9.46 1.00 mg/L 03/24/25 10:08 03/24/25 12:41 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Lead
Eurofins Calscience

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13 QC Sample Results
Job ID: 570-217080-2Client: Group Delta Consultants, Inc Project/Site: Fresno Airport
Method: 6010B - Metals (ICP)
Client Sample ID: Method BlankLab Sample ID: LB 570-547366/1-C Matrix: Solid Prep Type: STLC Citrate
Analysis Batch: 548859 Prep Batch: 548626
RL
Lead ND 1.00 mg/L 03/24/25 10:08 03/24/25 12:20 1
LB LB
Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier
Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-547366/2-C Matrix: Solid Prep Type: STLC Citrate
Analysis Batch: 548859 Prep Batch: 548626
Lead 20.0 19.58 mg/L 98 80 - 120
Analyte

LCS LCS
DUnitResult Qualifier %Rec
Spike
Added
%Rec
Limits
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-547366/3-C Matrix: Solid Prep Type: STLC Citrate
Analysis Batch: 548859 Prep Batch: 548626
Lead 20.0 19.53 mg/L 98 80 - 120 0 20
Analyte

LCSD LCSD
DUnitResult Qualifier %Rec
Spike
Added
%Rec
Limits LimitRPD
RPD
Client Sample ID: B1-1.5Lab Sample ID: 570-217080-6 MS
Matrix: Solid Prep Type: STLC Citrate
Analysis Batch: 548859 Prep Batch: 548626
Lead 2.31 20.0 21.86 mg/L 98 84 - 120
Analyte
MS MS
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec
Limits
Client Sample ID: B1-1.5Lab Sample ID: 570-217080-6 MSD Matrix: Solid Prep Type: STLC Citrate
Analysis Batch: 548859 Prep Batch: 548626
Lead 2.31 20.0 21.84 mg/L 98 84 - 120 0 7
Analyte

MSD MSD
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec
Limits LimitRPD
RPD
Eurofins Calscience

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Job ID: 570-217080-2Client: Group Delta Consultants, Inc Project/Site: Fresno Airport
Metals
Leach Batch: 547366
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid CA WET Citrate570-217080-6 B1-1.5 STLC Citrate
Solid CA WET Citrate570-217080-8 B2-0.5 STLC Citrate
Solid CA WET Citrate570-217080-9 B2-1.5 STLC Citrate
Solid CA WET Citrate570-217080-20 B6-0.5 STLC Citrate
Solid CA WET CitrateLB 570-547366/1-C Method Blank STLC Citrate Solid CA WET CitrateLCS 570-547366/2-C Lab Control Sample STLC Citrate Solid CA WET CitrateLCSD 570-547366/3-C Lab Control Sample Dup STLC Citrate Solid CA WET Citrate570-217080-6 MS B1-1.5 STLC Citrate Solid CA WET Citrate570-217080-6 MSD B1-1.5 STLC Citrate Prep Batch: 548626
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid Dilution 547366570-217080-6 B1-1.5 STLC Citrate
Solid Dilution 547366570-217080-8 B2-0.5 STLC Citrate
Solid Dilution 547366570-217080-9 B2-1.5 STLC Citrate
Solid Dilution 547366570-217080-20 B6-0.5 STLC Citrate
Solid Dilution 547366LB 570-547366/1-C Method Blank STLC Citrate Solid Dilution 547366LCS 570-547366/2-C Lab Control Sample STLC Citrate Solid Dilution 547366LCSD 570-547366/3-C Lab Control Sample Dup STLC Citrate Solid Dilution 547366570-217080-6 MS B1-1.5 STLC Citrate Solid Dilution 547366570-217080-6 MSD B1-1.5 STLC Citrate Analysis Batch: 548859
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 6010B 548626570-217080-6 B1-1.5 STLC Citrate
Solid 6010B 548626570-217080-8 B2-0.5 STLC Citrate
Solid 6010B 548626570-217080-9 B2-1.5 STLC Citrate
Solid 6010B 548626570-217080-20 B6-0.5 STLC Citrate
Solid 6010B 548626LB 570-547366/1-C Method Blank STLC Citrate Solid 6010B 548626LCS 570-547366/2-C Lab Control Sample STLC Citrate Solid 6010B 548626LCSD 570-547366/3-C Lab Control Sample Dup STLC Citrate Solid 6010B 548626570-217080-6 MS B1-1.5 STLC Citrate
Solid 6010B 548626570-217080-6 MSD B1-1.5 STLC Citrate
Eurofins Calscience

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13 Lab Chronicle
Client: Group Delta Consultants, Inc Job ID: 570-217080-2 Project/Site: Fresno Airport
Client Sample ID: B1-1.5 Lab Sample ID: 570-217080-6
Matrix: SolidDate Collected: 02/05/25 08:12
Date Received: 02/06/25 13:37
Leach CA WET Citrate VCN703/20/25 12:30 EET CAL 4547366 Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
STLC Citrate 50.14 g 500 mL
Prep Dilution 548626 03/24/25 10:08 UFLE EET CAL 4STLC Citrate 0.6 mL 12 mL Analysis 6010B 1 548859 03/24/25 12:29 P1R EET CAL 4STLC Citrate ICP10Instrument ID:

Client Sample ID: B2-0.5 Lab Sample ID: 570-217080-8
Matrix: SolidDate Collected: 02/05/25 08:16
Date Received: 02/06/25 13:37
Leach CA WET Citrate VCN703/20/25 12:30 EET CAL 4547366 Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
STLC Citrate 50.01 g 500 mL
Prep Dilution 548626 03/24/25 10:08 UFLE EET CAL 4STLC Citrate 0.6 mL 12 mL Analysis 6010B 1 548859 03/24/25 12:36 P1R EET CAL 4STLC Citrate ICP10Instrument ID:

Client Sample ID: B2-1.5 Lab Sample ID: 570-217080-9
Matrix: SolidDate Collected: 02/05/25 08:18
Date Received: 02/06/25 13:37
Leach CA WET Citrate VCN703/20/25 12:30 EET CAL 4547366 Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
STLC Citrate 50.06 g 500 mL
Prep Dilution 548626 03/24/25 10:08 UFLE EET CAL 4STLC Citrate 0.6 mL 12 mL Analysis 6010B 1 548859 03/24/25 12:39 P1R EET CAL 4STLC Citrate ICP10Instrument ID:

Client Sample ID: B6-0.5 Lab Sample ID: 570-217080-20
Matrix: SolidDate Collected: 02/05/25 08:50
Date Received: 02/06/25 13:37
Leach CA WET Citrate VCN703/20/25 12:30 EET CAL 4547366 Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
STLC Citrate 50.17 g 500 mL
Prep Dilution 548626 03/24/25 10:08 UFLE EET CAL 4STLC Citrate 0.6 mL 12 mL Analysis 6010B 1 548859 03/24/25 12:41 P1R EET CAL 4STLC Citrate ICP10Instrument ID:
¹ This procedure uses a method stipulated length of time for the process. Both start and end times are displayed.

Laboratory References:

EET CAL 4 = Eurofins Calscience Tustin, 2841 Dow Avenue, Tustin, CA 92780, TEL (714)895-5494 Eurofins Calscience

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13 Accreditation/Certification Summary
Client: Group Delta Consultants, Inc Job ID: 570-217080-2 Project/Site: Fresno Airport
Laboratory: Eurofins Calscience
The accreditations/certifications listed below are applicable to this report.

Authority Program Identification Number Expiration Date California State 3082 07-31-25
Oregon NELAP 4175 02-02-26
Eurofins Calscience

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13 Method Summary
Job ID: 570-217080-2Client: Group Delta Consultants, Inc Project/Site: Fresno Airport
Method Method Description LaboratoryProtocol
SW8466010B Metals (ICP) EET CAL 4
CA-WETCA WET Citrate California - Waste Extraction Test with Citrate Leach EET CAL 4 NoneDilution Preparation / Dilution Process EET CAL 4
Protocol References:

CA-WET = California Waste Extraction Test, from Title 22 None = None
SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates.

Laboratory References:

EET CAL 4 = Eurofins Calscience Tustin, 2841 Dow Avenue, Tustin, CA 92780, TEL (714)895-5494 Eurofins Calscience

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13 Sample Summary
Client: Group Delta Consultants, Inc Job ID: 570-217080-2 Project/Site: Fresno Airport
Lab Sample ID Client Sample ID Matrix Collected Received 570-217080-6 B1-1.5 Solid 02/05/25 08:12 02/06/25 13:37 570-217080-8 B2-0.5 Solid 02/05/25 08:16 02/06/25 13:37 570-217080-9 B2-1.5 Solid 02/05/25 08:18 02/06/25 13:37 570-217080-20 B6-0.5 Solid 02/05/25 08:50 02/06/25 13:37 Eurofins Calscience

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13 Login Sample Receipt Checklist
Client: Group Delta Consultants, Inc Job Number: 570-217080-2 Login Number: 217080
Question Answer Comment
Creator: Ovalle, Erick
List Source: Eurofins Calscience
List Number: 1
N/ARadioactivity wasn't checked or is </= background as measured by a survey meter.

TrueThe cooler's custody seal, if present, is intact.

TrueSample custody seals, if present, are intact.

TrueThe cooler or samples do not appear to have been compromised or tampered with.

TrueSamples were received on ice.

TrueCooler Temperature is acceptable.

TrueCooler Temperature is recorded.

TrueCOC is present.

TrueCOC is filled out in ink and legible.

TrueCOC is filled out with all pertinent information.

TrueIs the Field Sampler's name present on COC?
TrueThere are no discrepancies between the containers received and the COC.

TrueSamples are received within Holding Time (excluding tests with immediate HTs)
TrueSample containers have legible labels.

TrueContainers are not broken or leaking.

TrueSample collection date/times are provided.

TrueAppropriate sample containers are used.

TrueSample bottles are completely filled.

TrueSample Preservation Verified.

TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs
TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4").

TrueMultiphasic samples are not present.

TrueSamples do not require splitting or compositing.

N/AResidual Chlorine Checked.

Eurofins Calscience
This receipt checklist is generated for all samples received in this Login. It may not be applicable to all Jobs associated with this Login.

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13 Appendix C2
Laboratory Analytical Reports – Soil Vapor Samples
Logo
25 February 2025
Kevin Hall
Group Delta Consultants, Inc.
370 Amapola Avenue, Ste 212
Torrance, CA 90501
Re: Fresno Chandler Exec. Airport Ph. 2
Enclosed are the results of analyses for samples received by the laboratory on 02/20/25. If you have any questions concerning this report, please feel free to contact me.

Sincerely,
Colby Wakeman
Lab Director

Page 1 of 49 ends

11007 FOREST PLACE
SANTA FE SPRINGS, CA 90670
714-449-9937 PHONE
562-646-1611 FAX
Project Manager: Kevin Hall
Group Delta Consultants, Inc.
370 Amapola Avenue, Ste 212
Torrance, CA 90501
Project Number: EN8461A
Project: Fresno Chandler Exec. Airport Ph.

Reported
02/25/25 11:23

ANALYTICAL REPORT FOR SAMPLES
Sample ID Laboratory ID Matrix Date Sampled Date Received SV3-5' J250588-001 Soil Vapor 02/20/2025 07:53 02/20/2025 08:03 SV3-5' REP J250588-002 Soil Vapor 02/20/2025 08:01 02/20/2025 08:03 SV3-9.5' J250588-003 Soil Vapor 02/20/2025 08:26 02/20/2025 08:03 SV4-5' J250588-004 Soil Vapor 02/20/2025 08:46 02/20/2025 08:03 SV4-9.5' J250588-005 Soil Vapor 02/20/2025 08:59 02/20/2025 08:03 SV5-5' J250588-006 Soil Vapor 02/20/2025 09:18 02/20/2025 08:03 SV5-9.5' J250588-007 Soil Vapor 02/20/2025 09:34 02/20/2025 08:03 SV2-5' J250588-008 Soil Vapor 02/20/2025 09:50 02/20/2025 08:03 SV2-9.5' J250588-009 Soil Vapor 02/20/2025 10:08 02/20/2025 08:03 SV1-5' J250588-010 Soil Vapor 02/20/2025 10:27 02/20/2025 08:03 SV1-9.5' J250588-011 Soil Vapor 02/20/2025 10:43 02/20/2025 08:03 SV6-5' J250588-012 Soil Vapor 02/20/2025 10:58 02/20/2025 08:03 SV6-5' REP J250588-013 Soil Vapor 02/20/2025 11:03 02/20/2025 08:03 SV6-8' J250588-014 Soil Vapor 02/20/2025 11:32 02/20/2025 08:03 SV8-5' J250588-015 Soil Vapor 02/20/2025 11:57 02/20/2025 08:03 SV8-9.5' J250588-016 Soil Vapor 02/20/2025 12:03 02/20/2025 08:03 SV7-5' J250588-017 Soil Vapor 02/20/2025 12:27 02/20/2025 08:03 SV7-9.5' J250588-018 Soil Vapor 02/20/2025 12:30 02/20/2025 08:03 The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety.

Jones Environmental, Inc.

Colby Wakeman
Lab Director

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Reported
02/25/25 11:23

DETECTIONS SUMMARY
Sample ID: Laboratory ID:SV3-5' J250588-001
Analyte Result
Reporting
Limit Units Method Notes
Tetrachloroethene 82 µg/m3 EPA 8260 J
Sample ID: Laboratory ID:SV3-5' REP J250588-002
Analyte Result
Reporting
Limit Units Method Notes
Tetrachloroethene 88 µg/m3 EPA 8260 J
Toluene 84 µg/m3 EPA 8260 J
Sample ID: Laboratory ID:SV3-9.5' J250588-003
Analyte Result
Reporting
Limit Units Method Notes
Tetrachloroethene 83 µg/m3 EPA 8260 J
Sample ID: Laboratory ID:SV4-5' J250588-004
No Results Detected
Sample ID: Laboratory ID:SV4-9.5' J250588-005
No Results Detected
Sample ID: Laboratory ID:SV5-5' J250588-006
No Results Detected
Sample ID: Laboratory ID:SV5-9.5' J250588-007
No Results Detected
The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety.

Jones Environmental, Inc.

Colby Wakeman
Lab Director

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Reported
02/25/25 11:23

DETECTIONS SUMMARY
Sample ID: Laboratory ID:SV2-5' J250588-008
No Results Detected
Sample ID: Laboratory ID:SV2-9.5' J250588-009
No Results Detected
Sample ID: Laboratory ID:SV1-5' J250588-010
No Results Detected
Sample ID: Laboratory ID:SV1-9.5' J250588-011
No Results Detected
Sample ID: Laboratory ID:SV6-5' J250588-012
Analyte Result
Reporting
Limit Units Method Notes
1,2,4-Trimethylbenzene 86 µg/m3 EPA 8260 J
o-Xylene 84 µg/m3 EPA 8260 J
Toluene 82 µg/m3 EPA 8260 J
Sample ID: Laboratory ID:SV6-5' REP J250588-013
Analyte Result
Reporting
Limit Units Method Notes
1,2,4-Trimethylbenzene 85 µg/m3 EPA 8260 J
1,3,5-Trimethylbenzene 84 µg/m3 EPA 8260 J
o-Xylene 85 µg/m3 EPA 8260 J
Toluene 83 µg/m3 EPA 8260 J
The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety.

Jones Environmental, Inc.

Colby Wakeman
Lab Director

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Reported
02/25/25 11:23

DETECTIONS SUMMARY
Sample ID: Laboratory ID:SV6-8' J250588-014
No Results Detected
Sample ID: Laboratory ID:SV8-5' J250588-015
Analyte Result
Reporting
Limit Units Method Notes
Tetrachloroethene 82 µg/m3 EPA 8260 J
Sample ID: Laboratory ID:SV8-9.5' J250588-016
Analyte Result
Reporting
Limit Units Method Notes
Tetrachloroethene 86 µg/m3 EPA 8260 J
Sample ID: Laboratory ID:SV7-5' J250588-017
Analyte Result
Reporting
Limit Units Method Notes
Tetrachloroethene 82 µg/m3 EPA 8260 J
Sample ID: Laboratory ID:SV7-9.5' J250588-018
Analyte Result
Reporting
Limit Units Method Notes
Tetrachloroethene 86 µg/m3 EPA 8260 J
The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety.

Jones Environmental, Inc.

Colby Wakeman
Lab Director

Page 5 of 49 ends

Reported
02/25/25 11:23
SV3-5'
J250588-001(Soil Vapor)
Result
Rep.