M – Phase II Environmental Site Assessment — Cupertino City Council, April 1, 2026

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www.aeiconsultants.com
Limited Phase II Subsurface
Investigation Report
REPORT DATE: October 18, 2023

SITE INFORMATION
10857, 10867, 10877, and 10887 Linda Vista Drive
Cupertino, California 95014

PROJECT INFORMATION
AEI Project No. 482220

PREPARED FOR
Roy Evulich and Angela Evulich
Co-Trustees of the Evulich Living Trust dated
7-8-1980, as amended.
13616 Surrey Ln Saratoga, California 95070
Barris J Evulich and Sondrea Evulich
Co-Trustees of the Evulich 2000 Family UTD Trust
dated October 3, 2000, as amended.
2451 Fairway Village Drive, Park City, Utah, 84060

PREPARED BY
AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
October 18, 2023
Roy Evulich and Angela Evulich
Co-Trustees of the Evulich Living Trust dated
7-8-1980, as amended
13616 Surrey Ln Saratoga, California 95070
Barris J Evulich and Sondrea Evulich
Co-Trustees of the Evulich 2000 Family UTD Trust
dated October 3, 2000, as amended
2451 Fairway Village Drive, Park City, Utah 84060
Subject: Limited Phase II Subsurface Investigation
10857, 10867, 10877, and 10887 Linda Vista Drive
Cupertino, California 95014
AEI Project No. 482220
Dear Ladies and Gentlemen,
This report presents the results of the Limited Phase II Subsurface Investigation conducted by AEI Consultants (AEI) at 10857, 10867, 10877, and 10887 Linda Vista Drive, Cupertino, California (“the Site”) to assess the environmental conditions identified in AEI’s Draft Phase I Environmental Site Assessment report (AEI Project No. 482220) dated September 8, 2023.The investigation was performed in general accordance with the scope of services outlined in our proposal dated August 10, 2023 (AEI Proposal Number 91984v3 ), which was subsequently authorized on August 11, 2023.

AEI appreciates the opportunity to support this important project. If you have any questions, please do not hesitate to contact me.

Sincerely,
Jeremy Smith
Senior Project Manager
925-746-6028
[email protected]

AEI Consultants
Project No. 482220
October 18, 2023
Page iii

TABLE OF CONTENTS

1.0 PURPOSE .......................................................................................................... 1

2.0 SITE DESCRIPTION AND BACKGROUND........................................................................ 1

2.1 Site Description.................................................................................................... 1

2.2 Background......................................................................................................... 2

3.0 FIELD INVESTIGATION AND OBSERVATIONS.................................................................. 2

3.1 Health and Safety Plan ........................................................................................... 2

3.2 Utility Clearance .................................................................................................. 3

3.3 Geophysical Survey ............................................................................................... 3

3.4 Drilling and Soil Sample Collection ............................................................................. 3

3.5 Boring Abandonment.............................................................................................. 5

3.6 Decontamination Procedures and Investigation-Derived Waste ............................................ 5

3.7 Laboratory Analyses .............................................................................................. 5

4.0 FINDINGS........................................................................................................... 6

4.1 Subsurface Conditions ............................................................................................ 6

4.2 Analytical Results ................................................................................................. 6

4.2.1 Soil Sample Analytical Results...................................................................... 6

5.0 SUMMARY AND CONCLUSIONS.................................................................................. 8

6.0 REFERENCES ...................................................................................................... 8

7.0 REPORT LIMITATIONS............................................................................................ 9

7.1 Reliance ............................................................................................................ 9

8.0 SIGNATURES .....................................................................................................10

FIGURES
Figure 1 Site Location Map
Figure 2 Site Map
TABLES
Table 1 Soil Sample Data Summary –TPH and VOCs
Table 2 Soil Sample Data Summary –Arsenic, Lead, and Pesticides

APPENDICES
Appendix A GPR Summary Report
Appendix B Boring Logs
Appendix C Laboratory Analytical Report
Limited Phase II Subsurface Investigation
10857, 10867, 10877, and 10887 Linda Vista Drive, Cupertino, California 95014 Project No. 482220
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1.0 PURPOSE
This report presents the results of the Limited Phase II Subsurface Investigation (Phase II) performed by AEI Consultants (AEI) at 10857, 10867, 10877, and 10887 Linda Vista Drive in Cupertino, California (“the Site”). The investigation was conducted in general accordance with the scope of work presented in AEI’s proposal number 91984v3 dated August 10, 2023 , authorized by the Client on August 11, 2023.

The general purpose of this Phase II was to evaluate whether the subsurface has been materially impacted by the environmental conditions identified in the Draft Phase I Environmental Site Assessment (Phase I ESA) prepared by AEI (AEI Project No. 482220) dated September 8, 2023.

The Site descriptions, background, investigation procedures, findings, summary , and conclusions are presented in the following sections.

2.0 SITE DESCRIPTION AND BACKGROUND
Details on the Site description and background are presented belowas referenced in the PhaseI ESA.

2.1 Site Description
The Site is located on the west side of Linda Vista Drive in a primarily residential area of Cupertino, California. The Site is approximately 3 acres of land consisting of an unimproved cul-de-sac and four individual parcels totaling approximately 2.54 acres that are improved with four single-story residential buildings with additional detached garage and shed structures, parking areas, and associated landscaping.

The Site appeared to be graded to mostly flat and is situated at an elevation of approximately 400 feet above mean sea level. Based on review of information from the United States Department of Agriculture Soil Survey, soils underlying the Site are classified as Urban Land, meaning soils which have been disturbed or paved over to a high degree and for which site - specific investigation is typically required in order to determine soil properties. Groundwater flow direction beneath the Site is inferred to flow to the west-northwest, in the direction of Stevens Creek, located approximately 600 feet to the west of the Site . Depth to groundwater was anticipated to be approximately 25 to 30 feet below ground surface (bgs) for the Site, based on information for a nearby property reviewed during the Phase I ESA; groundwater sampling was not included within the scope of this investigation. The Site location is shown on Figure 1.

Refer to Section 4.1 below for additional information on the Site subsurface conditions encountered during drilling.

Limited Phase II Subsurface Investigation
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2.2 Background
The Draft Phase I ESA identified the following recognized environmental condition (REC) for the Site:

According to the Property Owner, the Siteis equipped with two 560-gallon underground storage tanks (USTs), constructed of steel, which were installed in 1972 . Both of the two observed USTs appeared to be abandoned and filled with concrete based on AEI’s visual inspection; however details of the abandonment were not available. According to information presented in the regulatory database report, the Site is/was equipped with at least two, and potentially as many as four, 550 -gallon USTs, containing regular leaded and unleaded gasoline, which were installed in 1972, and potentially 1982. Four unique State Water Resources Control Board (SWRCB) Tank ID numbers are identified within the SWEEPS UST database listing. The HIST UST listing and SWEEPS UST listings both identify the total number of tanks present at the site as four; however, it is unclear whether this is accurate or may have been the result of an administrative error, as property ownership was only aware of two USTs at the site. Based on the indicated ages of the tanks (41-51 years old), there is potential for these USTs to have been in place for a period of time far exceeding the useful life expectancy for steel USTs. No releases have been reported in association with the USTs. However, based on the lack of information regarding historical sampling or formal closure activities relating to the two known USTs; as well as the potential for up to two additional USTs, the historical storage of petroleum products in USTs at the Site is considered a REC.

Additionally, the following other environmental consideration (OEC) was identified for the Site:

Based on a review of aerial photographs, the Sitewas historically used for agricultural purposes.

There is a potential that agricultural chemicals, such as pesticides, were used on site, and that the Site has been impacted by the use of such agricultural chemicals.

3.0 FIELD INVESTIGATION AND OBSERVATIONS
Investigation efforts included performing a geophysical surveyand advancing eleven soil borings at the Site to collect soil samples. The geophysical survey was performed to evaluate if additional USTs (beyond the two known USTs) may be present, four deeper soil borings were advanced to assess soil conditions adjacent to the two known USTs, and seven shallow soil borings were advanced across the Site to evaluate shallow soils in connection with historical agricultural use.

The boring locations are shown on the sample location map in Figure 2. The completed Site activities are summarized below.

3.1 Health and Safety Plan
A site-specific health and safety plan was prepared, reviewed by on- site personnel, and kept on the Site for the duration of the fieldwork.

Limited Phase II Subsurface Investigation
10857, 10867, 10877, and 10887 Linda Vista Drive, Cupertino, California 95014 Project No. 482220
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3.2 Utility Clearance
The public underground utility locator Underground Service Alert of Northern California and Nevada was notified who, in turn, notified subscribing utility companies of the planned investigation work for underground utility locations to be marked along the ground surface around the Site boundaries and proposed boring locations, where accessible. Private utility locating was conducted by Foresite Engineering Surveys of Pleasant Hill , California under subcontract to AEI to further identify and locate underground utilities on the Site, and to shift boring locations, as appropriate. Subsurface utilities identified on the Site included potable water, sanitary sewer, natural gas, and unknown utility lines.

3.3 Geophysical Survey
On September 14, 2023, in addition to the utility locating activities, a geophysical survey was conducted by Foresite Engineering Surveys. The geophysical survey was conducted across the Site, in the area of the two known USTs and at other accessible areas of the Site. The purpose of the survey was to evaluate the potential presence of USTs and/or associated piping . The geophysical survey was conducted using ground penetrating radar (GPR) and reflective induction (RI). During the scanning process, subsurface visibility was noted to be up to 8 feet below ground surface (bgs). During geophysical scanning, evidence of two existing USTs on the Site was confirmed at the areas shown on Figure 2 , which correlates with the location of the two known tanks identified by property management and observed by AEI during the Phase I ESA. No evidence of additional USTs was identified in the areas scanned; therefore, AEI anticipates that only two USTs, not four, are present at the Site.

Subsurface anomalies not consistent with the presence of USTs were identified near the garage in the eastern portion of the Site. The anomalies appear to be up to 8 feet in depth, indicative of debris, which based on conversations with the owner, likely consists of concrete and wood debris buried over time. An additionalisolated anomaly, likely cement debris, was additionally noted west of the residence at 10877 Linda Vista Drive at approximately 2.5 feet bgs. The geophysical survey report prepared by Foresite Engineering Surveys, including mapped locations of utilities and detected anomalies, is presented as Appendix A.

The Client should be aware of the inherent limitations of geophysical surveying methods and that utilities and features whether above-ground or in the subsurface(i.e., automobiles, debris piles, tree roots, reinforced concrete, certain soil conditions, etc.), may decrease the effectiveness of the survey equipment. The Client should not conclude that such features are definitively non- existent, only that they were not detected. Conversely, should the survey indicate that a subsurface obstruction may be present in a proposed boring location, the boring location will be adjusted accordingly.

3.4 Drilling and Soil Sample Collection
On September 19, 2023, under the direct supervision of AEI, eleven exploratory soil borings, SB-1, SB-2A, SB-3B, and SB-4 through SB-11 were advanced at the Site by ECA Inc. using a truck- mounted direct push drilling rig at the locations shown on Figure 2. The locations of the borings are listed below:

Limited Phase II Subsurface Investigation
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October 18, 2023

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• Boring SB -1 and SB -2 were advanced to a total depth of 12 feet bgs, adjacent to the abandoned UST in the western portion of the Site;
• Boring SB-3 and SB -4 were advanced to a total depth of 12 feet bgs, adjacent to the abandoned UST in the eastern portion of the Site;
• Boring SB-5 was advanced to a total depth of 4 feet bgs, on the northwest portion of the Site;
• Boring SB-6 through SB-11 were advanced to a total depth of 4 feet bgs across the Site to provide lateral coverage to assess historical agricultural use.

The locations of the borings were chosen in part based on the results of the utility clearance, the locations of the identified USTs (SB -1, SB-2A, SB-3A, and SB -4), and to provide general lateral coverage of the Site (SB-5 through SB-11).

Soil core was collected while advancing each of the soil borings continuously across their entire depth for the purposes of lithologic logging, field screening (headspace testing), and laboratory analyses. The soil samples from borings were obtained using a single -walled coring system approximately 1 inch in diameter and 4 feet in length containing acetate liners. The coring system was connected to 2.25-inch diameter, flush- jointed drill rod that was hydraulically driven (pushed) by the rig to each target sample depth. Upon retrieval from each sample depth interval, the coring system was opened, and the liners were removed and cut for visual inspection and lithologic logging purposes. Recovered soil samples were examined for soil classification and described on detailed boring log in general conformance with the Unified Soil Classification System. The boring logs are presented in Appendix B.

Headspace screening was performed using a calibrated photoionization device (PID) equipped with an electrodeless 10.6 or 11.7electron volt (eV) ultraviolet lamp for detecting the presence of organic vapors in the soil samples collected. To initiate the headspace testing procedure, soil samples were placed into labeled, plastic bags, and sealed prior to conducting the tests .

After approximately 20 -30 minutes had elapsed for equilibration of organic vapor inside the bags, each bag was punctured with the probe tip of the PID to allow for measurement of the organic vapors or headspace gases. No visual or olfactory evidence (i.e., soil discoloration/odor) of potential impacts were observed in soils recovered from the borings. The maximum PID reading was 0.2 parts per million (ppm) obtained from soils in four of the eleven soil borings advanced at the Site. Obtained PID measurements are recorded in the boring logs that are presented in Appendix B.

Select soil sample s were collected for potential laboratory analysis from the depth interval representing the highest likelihood for impacts based on the field screening results, observed field geology, or feature to assess. Samples for potential analysis of volatile organic compounds (VOCs) were transferred from the acetate liners and placed into clean, laboratory-supplied containers with preservative in accordance with US EPA Method 5035. Soil samples for potential analysis of non-volatile compoundsremained in the acetate sleeve and were capped with Teflon tape and end caps. All samples were sealed and labeled with the project name and number, boring name, sample depth, and sampling date/time and placed into an insulated shipping container with icefor transport to the analytical laboratoryunder appropriate chain-of-custody documentation. The following is a summary of the soil samples collected and analyzed(the “T” indicates the sample was collected using terracore bottles for Method 5035 preservation):

Limited Phase II Subsurface Investigation
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• Samples SB-1-6’, TSB-1-6’, SB-2A-6’, and TSB-2A-6’ were collected at 6 feet bgs, from a depth adjacent to the estimated bottom of the western UST; • Samples SB-1-12’ and TSB-1-12’, SB-2A-12’, and TSB-2A-12’ were collected at 12 feet bgs, from a depth below the western UST;
• Samples SB-3B-6’, TSB-3-6’, SB-4-6’, and TSB-4-6’ were collected at 6 feet bgs, from a near the bottom of the eastern UST;
• Samples SB-3B-12’, TSB-3-12’, SB-4-12’, and TSB-4-12’ were collected at 12 feet bgs, from a depth below the eastern UST;
• Samples SB -5-1.5’, SB-6-1.5’, SB-7-1.5’, SB-8-1.5’, SB-9-1.5’, SB-10-1.5’, and SB-11-1.5’ were collected below fill material within first encountered native material most likely to be impacted by historical agricultural usage of the Site.

3.5 Boring Abandonment
Following completion of field ac tivities and removal of tooling, the boring locations were backfilled with neat cement grout.

3.6 Decontamination Procedures and Investigation-Derived Waste AEI personnel wore disposable Nitrile gloves during sample collection, changinggloves between sample locations. Down-hole equipment including samplers, and hand tools were dedicated to a single boring or were decontaminated prior to drilling each boring using a triple rinse system with the initial rinse consisting of an Alconox and tap water solution, followed by the second and third rinses consisting of tap water rinses.

Investigation-derived waste (e.g., drill cuttings) w ere left on -site in a labelled five -gallon bucket with a secured lid, pending the results of sample analyses.

3.7 Laboratory Analyses
The soil samples were labeled and placed into an insulated container containing ice before being transported under appropriate chain- of-custody documentation to Torrent Laboratory, Inc. of Milpitas, California. Two soil samples from each of the four deeper borings were collected and analyzed for VOCs using United States Environmental Protection Agency (US EPA) Testing Method 8260and TPH multi-range using US EPA Method 8015. One soil sample from each of the seven shallow borings were collected and analyzed for arsenic and lead using US EPA Test Method 6010B and organochlorine pesticides (OCPs) using US EPA Methods 8081A.

Twelve additional soil samples were collected and held at the laboratory pending receipt of the analytical results for the initial samples. As the initial soil samples did not contain contaminant levels above their respective regulatory limits, analysis of the additional samples was unnecessary, and the laboratory was instructed to discard the m. No further analyses were conducted as part of this investigation. Laboratory analytical reports with chain- of-custody documentation are provided in Appendix C.

Limited Phase II Subsurface Investigation
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4.0 FINDINGS
The findings of this investigation are summarized below.

4.1 Subsurface Conditions
Subsurface conditions observed in the core collected from soil borings SB-1, SB-2A, SB-3B, and SB-4 indicated that soils at the Site consisted of approximately 6 inches of topsoil and/or fill underlain by primarily silt with gravel to a depth of 4 to 6.75 feet , with deeper layers of sand with gravel and/or silt to the total depth of 12 feet bgs borings, the maximum depth explored as part of this investigation. Soils recovered from borings SB -5 through SB-11 consisted of silt with plant roots.

Refusal was initially encountered during drilling activities at boring SB-2 at approximately 9 feet bgs, and boring SB-2A was advanced as a step out boring. At the location of boring SB -3, refusal was first encountered at 6 feet bgs, then at 7 feet bgs at the first step out location, before the second attempted step out SB-3B was completed.Groundwater was not encountered during drilling activities at the eleven borings advanced during this investigation.

4.2 Analytical Results
For purposes of providing context to the data obtained during this investigation, analytical results were evaluated in general accordance with the User’s Guide: Derivation and Application of Environmental Screening Levels (ESLs), Interim Final July 2019, Revision 2, issued by the San Francisco Bay Regional Water Quality Control Board (SFBRWQCB). Under most circumstances, and within the limitations described in the User’s Guide, the presence of a chemical in soil at concentrations below the corresponding ESL may be assumed to not pose a significant threat to human health and the environment. Additional evaluation may be necessary at sites where a chemical is present at concentrations above the corresponding ESL.

For this investigation, it is assumed that the Site will continue as Residential land use; and therefore, the soil analytical results were compared to either Tier I ESLs (most conservative), or ESLs assuming a direct contact (inhalation, ingestion and/or dermal contact) under a Residential land use scenario.

For soil analytical results for arsenic, Establishing Background Arsenic in Soil of the San Francisco Bay Region, dated December 2011 by D.J. Duvergé was used for comparison of background arsenic in soil in the San Francisco Bay area. Laboratory analytical reports with chain-of-custody documentation are presented in Appendix C.

4.2.1 Soil Sample Analytical Results
The soil sample results are presented below for those samples collected near the USTs and those for the former agricultural use.

UST Investigation Results –TPH and VOCs
Table 1 presents a summary of the soil sample analytical results and comparison screening levels for borings advanced near the USTs. Two soil samples from each of the borings SB -1, Limited Phase II Subsurface Investigation
10857, 10867, 10877, and 10887 Linda Vista Drive, Cupertino, California 95014 Project No. 482220
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SB-2A, SB-3B, and SB-4 were collected and analyzed. The analytical results can be additionally summarized as follows:
• TPH as gasoline (TPH-g) was not detected at concentrations above the respective laboratory reporting limits (RLs) in the eight soil samples analyzed from borings SB -1, SB-2A, SB-3B, and SB-4.
• TPH as diesel (TPH -D) was detected in each of the four samples from 5 to 6 feet bgs , observed at a maximum of 12.3 milligrams per kilogram (mg/kg) in sample SB -1-6’, and in each of the four samples from 11 to 12 feet bgs, observed at a maximum of 5.53 mg/kg in sample SB-4-12’.Each of these detections is considered insignificant as it is below the Tier I ESL of 260 mg/kg.
• TPH as motor oil (TPH -mo) was detected in soil sample SB -3B-6’ at a concentration of

7.12 mg/kg which is below the Tier I ESL of 1,600 mg/kg. • VOCs, including benzene, toluene, ethylbenzene, and xylenes (BTEX), were not detected above the laboratory reporting limit (RL) in the soil samples collected and analyzed.

Shallow Soil Sample Results –Arsenic, Lead, and Pesticides Table 2 presents a summary of the soil sample analytical results and comparison screening values for the shallow soil borings advanced across the Site. One shallow soil sample was collected from each of the soil borings SB-5 through SB-11 and analyzed. The “J” flag indicates that the detected concentration is an estimate between the method detection limit (MDL) and the method quantification limit or reporting limit (RL). The analytical results can be additionally summarized as follows:
• Arsenic was detected in each of the seven shallow soil samples collected and analyzed, observed at a maximum concentration of 3.55 mg/kg in sample SB -6-1.5’. The detected concentrations are not considered significant as they are below the generally accepted background soil concentration of 11 mg/kg for arsenic.
• Lead was detected in each of the seven soil shallow samples collected and analyzed , observed at a maximum concentration of 10.5 mg/kg in sample SB -8-1.5’. The detected concentrations are not considered significant as they are below the Tier I ESL of 32 mg/kg, and well below the Residential Direct Exposure ESL of 80 mg/kg. • OCP compounds p,p-DDE and p,p-DDT were detected above laboratory RLs in three of the seven shallow soil samples collected and analyzed, observed at maximum concentrations of

0.0278 mg/kg and 0.0107 mg/kg, respectively, in sample SB -10-1.5’. The detected concentrations are well below the Residential Direct Exposure ESL values of 1.8 mg/kg (p,p- DDE) and 1.9 mg/kg (p,p-DDT).
• OCP compounds p,p-DDD and dieldrin were additionally detected above laboratory MDLs in shallow soil sample SB-10-1.5’, at maximum concentrations of 0.00240 J mg/kg and 0.00129 J mg/kg, respectively. The detected concentrations are well below the Residential Direct Exposure ESLs of 1.8 mg/kg and 0.037 mg/kg, respectively. • No additional OCPs were detected above laboratory limits in the seven shallow soil samples collected and analyzed.

Limited Phase II Subsurface Investigation
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5.0 SUMMARY AND CONCLUSIONS
AEI completed a Phase II at the Site to evaluate whether the subsurface has been adversely impacted by the petroleum USTs at the Site and/or historical agricultural operations identified as in the Draft Phase I ESA. Investigation efforts include d performing a geophysical survey to identify potential USTs, advancing four borings adjacent to the USTs (SB -1, SB-2A, SB-3B, and SB-4) to collect soil samples for analysis of TPH multirange and VOCs, and advancing seven shallow soil borings across the Site (SB-5 through SB-11) to collect soil samples for analysis of arsenic, lead, and OCPs. The investigation results can be summarized as follows:
• The geophysical survey identified evidence of two potential existing USTs at the Site, one in the northwest portion and one in the east portion, which correlate with the locations of the two known USTs identified at the Site by property management during the Phase I ESA.

No evidence of additional USTs was identified at the Site. Therefore, the historical reference to additional USTs is considered to be incorrect. • For the soil samples from borings advanced adjacent to the USTs, TPH was either not detected above laboratory limits or was detected at concentrations below the Tier I ESLs.

VOCs were not detected above laboratory limits in thesamples from the soil borings. Based on this data it does not appear that a significant release has occurred from the historical USTs at the Site.
• For the shallow soil samples from borings across the Site, arsenic and lead were not detected above the known background levels (arsenic) or applicable Tier I ESL, indicating that lead arsenate does not appear to be a significant concern. In addition, OCPs were either not detected above laboratory limits or were detected well below the Residential Direct Exposure ESLs. Therefore, significant residual pesticides were not identified in the areas sampled from the historical agricultural use at the Site.

Based on the results summarized above, no additional investigation is recommended for the Site. However, it is recommended that the two onsite abandoned USTs be formally closed/removed from the Site.

6.0 REFERENCES
AEI, 2023. Draft Phase I Environmental Site Assessment, 10857, 10867, 10877, and 10887 Linda Vista Drive, Cupertino, Santa Clara County, California 95014 (AEI Project No. 482220).

September 8.

Duvergé, D.J., 2011. Establishing Background Arsenic in Soil of the Urbanized San Francisco Bay Region, San Francisco State University, MS Thesis. December.

Bradford, G. R., Chang, A. C., Page, A. L., Bakhtar, D., Frampton, J. A., and Wright, H., 1996.

Background Concentrations of Trace and Major Elements in California Soils, Kearney Foundation of Soil Science Division of Agricultural and Natural Resources University of California. March.

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San Francisco Bay Regional Water Quality Control Board (SFBRWQCB), 2019 . Environmental Screening Levels, Rev. 2. July.

7.0 REPORT LIMITATIONS
This report presents a summary of work completed by AEI Consultants. The completed work includes observations and descriptions of site conditions encountered . Where appropriate, it includes analytical results for samples taken during the course of the work . The number and location of samples are chosen to provide the requested information, subject to scope of work for which AEI was retained and limitations inherent in this type of work, but it cannot be assumed that they are representative of areas not sampled. This report should not be regarded as a guarantee that no further contamination beyond that which could have been detected within the scope of this investigation is present beneath the Site. Undocumented, unauthorized releases of hazardous material, the remains of which are not readily identifiable by visual inspection and are of different chemical constituents, are difficult and often impossible to detect within the scope of a chemical specific investigation.

Any conclusions and/or recommendations are based on these analyses and observations, and the governing regulations. Conclusions beyond those stated and reported herein should not be inferred from this document. These services were performed in accordance w ith generally accepted practices, in the environmental engineering and construction field, which existed at the time and location of the work . No other warranty, either expressed or implied, has been made.

7.1 Reliance
This investigation was prepared for the sole use and benefit of Roy Evulich and Angela Evulich Co-Trustees of The Evulich Living Trust dated 7 -8-1980, as amended, Barris J Evulich and Sondrea Evulich, Co-Trustees of The Evulich 2000 Family UTD Trust dated October 3, 2000, as amended, and Seubert Frimel & Warner LLP (the “Designated Recipients”). Such investigation results, both verbal and written, whether in draft or final, are for the benefit of the Designated Recipients and specified third parties, if any, who are named in a reliance letter executed by AEI Consultants. This report has no other purpose and may not be relied upon by any other person or entity without the written consent of AEI. Either verbally or in writing, third parties may come into possession of this report or all or part of the information generated as a result of this work. In the absence of a written agreement with AEI or reliance letter executed by AEI granting such rights, no third parties shall have rights of recourse or recovery whatsoever under any course of action against AEI, its officers, employees, vendors, successors or assigns.

Reliance is provided in accordance with AEI’s Proposal, Standard Terms & Conditions, and Addendum (collectively, the “Services Agreement”) executed by AEI Consultants and the Designated Recipients. The limitation of liability defined in the Service Agreement is the aggregate limit of AEI Consultant’s liability to the client and all relying parties.

Limited Phase II Subsurface Investigation
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8.0 SIGNATURES
This document was prepared by, or under the direction of, the undersigned.

Jeremy Smith Trent A. Weise, P.E.

Senior Project Manager Vice President
Trent
A.

Weise
, P.
, P.

E
.
, P.

FIGURES

LEGEND

SITE LOCATION MAP
FIGURE 1
Project No. 482220
0 20 40
SCALE: 1” = 40’
Estimated Groundwater Flow Direction
0 30
SCALE: 1” = 30’
15 Scale is Approximate
SCALE

INFERRED DIRECTION

OF GROUNDWATER FLOW
Map: Cupertino, CA
Date: 2021
Source:

Approximate Site Boundary
USGS
SITE

LOCATION

MAP ICONS
10857; -67; -77; and -87

LINDA VISTA DRIVE
CUPERTINO, CALIFORNIA 95014
LEGEND

SITE MAP
FIGURE 2
Project No. 482220
10857; -67; -77; and -87

LINDA VISTA DRIVE
CUPERTINO, CALIFORNIA 95014
Approximate Site Boundary
Abandoned UST
Soil Boring Location
Shallow Soil Sample Location
0 30 60
SCALE: 1” ~ 60’
Temporary Well Point
Monitoring Well
Soil Boring
SB-1
Proposed Soil Gas Sample Location
Hydraulic Lift
Oil/Water Separator
Floor Drain
UST
Estimated Groundwater Flow Direction

STREET AVENUE ROAD BOULEVARD
SB-9
SB-10
SB-11
SB-4
SB-6
SB-7
SB-5
SB-8
SB-1
SB-2
SB-3
SB-1
10857
10877
10887
10867
TABLES

TABLE 1: SOIL SAMPLE DATA SUMMARY - TPH AND VOCS
10857; -67; -77; and -87 Linda Vista Drive, Cupertino, California 95014 Total Remaining
Location Depth TPH-g TPH-d TPH-mo Benzene Toluene Ethylbenzene Xylenes VOCs ID Date (feet bgs) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) SB-1 9/19/2023 5-6 <100 12.3 <5.0 <0.0098 <0.0098 <0.0098 <0.0186 <RL SB-1 9/19/2023 11-12 <100 3.07 <5.0 <0.018 <0.018 <0.018 <0.036 <RL SB-2 9/19/2023 5-6 <100 4.84 <5.0 <0.014 <0.014 <0.014 <0.028 <RL SB-2 9/19/2023 11-12 <100 3.22 <5.0 <0.013 <0.013 <0.013 <0.026 <RL SB-3 9/19/2023 5-6 <100 6.26 7.12 <0.013 <0.013 <0.013 <0.026 <RL SB-3 9/19/2023 11-12 <100 4.83 <5.0 <0.0090 <0.0090 <0.0090 <0.018 <RL SB-4 9/19/2023 5-6 <100 2.66 <5.0 <0.011 <0.011 <0.011 <0.022 <RL SB-4 9/19/2023 11-12 <100 5.53 <5.0 <0.014 <0.014 <0.014 <0.028 <RL Comparison Values:

ESL- Tier 1 100 260 1,600 0.025 3.2 0.43 2.1 Various
Notes:
mg/kg milligrams per kilogram
<RL less than the laboratory reporting limit
bgs below ground surface
TPH-g Total Petroleum Hydrocarbons as Gasoline
TPH-d Total Petroleum Hydrocarbons as Diesel
TPH-mo Total Petroleum Hydrocarbons as Motor Oil
VOCs Volatile Organic Compounds
Comparison Values:

ESL Tier 1: Environmental Screening Levels (ESLs) showing Tier 1 (most conservative) exposure risks from July 2019 (Rev. 2) ESL Summary Tables, prepared by the San Francisco Bay Regional Water Quality Control Board AEI Project No. 482220 Page 1 of 1 AEI Consultants
TABLE 2: SOIL SAMPLE DATA SUMMARY - ARSENIC, LEAD, AND PESTICIDES 10857; -67; -77; and -87 Linda Vista Drive, Cupertino, California 95014 Remaining
Location Depth Arsenic Lead p,p-DDE p,p-DDD p,p-DDT Dieldrin Pesticides ID Date (feet bgs) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) SB-5 9/19/2023 1-1.5 2.75 6.85 0.00645 <0.0020 0.00563 <0.0020 <RL SB-6 9/19/2023 1-1.5 3.55 10.2 <0.0020 <0.0020 <0.0020 <0.0020 <RL SB-7 9/19/2023 1-1.5 3.16 7.05 <0.0020 <0.0020 <0.0020 <0.0020 <RL SB-8 9/19/2023 1-1.5 2.89 10.5 <0.0020 <0.0020 <0.0020 <0.0020 <RL SB-9 9/19/2023 1-1.5 2.58 7.40 <0.0020 <0.0020 <0.0020 <0.0020 <RL SB-10 9/19/2023 1-1.5 3.19 8.25 0.0278 0.00240 J 0.0107 0.00129 J <RL SB-11 9/19/2023 1-1.5 2.67 8.55 0.00469 <0.0020 0.00272 <0.0020 <RL Comparison Values:

ESL- Tier 1 0.067 1
32 0.33 2.7 0.0011 0.00046 Various
ESL Direct Exposure - R 0.067 1
80 1.8 1.8 1.9 0.037 Various
Notes:
mg/kg
<RL
bgs
DDE
DDD Dichlorodiphenyldichloroethane
DDT
1 Arsenic concentrations from Establishing Background Arsenic in Soil of the San Francisco Bay Region, December 2011 study indicate background levels of arsenic in California Bay Area soil typically range between 1.2 and 11 mg/kg.

J Indicates a value between the method MDL and PQL and that the reported concentration should be considered as estimated.

Comparison Values:

ESL Tier 1: Environmental Screening Levels (ESLs) showing Tier 1 (most conservative) exposure risks from July 2019 (Rev. 2) ESL Summary Tables, prepared by the San Francisco Bay Regional Water Quality Control Board ESL Direct Exposure - R: Environmental Screening Levels (ESLs) showing Direct Exposure Human Health Residential (R) Use exposure risks from July 2019 (Rev. 2) ESL Summary Tables, prepared by the San Francisco Bay Regional Water Quality Control Board milligrams per kilogram
less than the laboratory reporting limit
below ground surface
Dichlorodiphenyldichloroethylene
Dichlorodiphenyltrichloroethane
AEI Project No. 482220 Page 1 of 1 AEI Consultants

APPENDIX A
GPR Summary Report

GPR Summary Report
Project Name: 10857,-67,-77 &-87LindaVista Drive, Cupertino, CA Survey Date: 2023-09-14
Report Date: 2023-09-15
Client: AEI
Site Description: Formerly a small ranch this property currently includes four(4) residences and three(3) small storage sheds. The cover is mostly dirt with three driveways, none reinforced.

Foresite was asked to determine the locations of any underground storage tanks (UST) and scan for any conflicts with utilities in future drilling locations.

Using electromagnetic field (EMF) transmitter and receiver we located utilities and marked the ground in accordance with APWA/USA colored paint.

The results are shown on the attached map with gas in yellow , water in blue, sewer in green and unknown in pink. The electric and communications are supplied overhead on north side and south side of property boundaries.

Reflective induction (RI) was then used to scan the site in north to south traverses at 5 ft intervals marking the surface where mass anomalies were detected. This can include soil changes, cans, lids, manholes, valves and UST's.

Ground penetrating radar (GPR) was also used to scan the area and gain profile images through the soils as an aid in identifying buried objects. This unit has GPS antenna attached which enables mapping of our findings using World Coordinates.

With good reflections reaching nearly 8 feet in depth we were able to map the area in the same day. Where obstacles such as dense undergrowth, trees, vehicles and buildings were located we could not scan with GPR but using RI we did not detect additional anomalies other than those shown on map here.

Two (2) existing UST's were discovered at approximately 4ft below grade.

Screenshot on figure 1 shows possible UST #2 at almost 3ft deep, possibly 3ft diameter and 6ft long.

Screenshots #3 & #4 show possible UST #1 behind fence in western parcel.

Also discovered was a possible debris pile, see screenshot #5, figure 5 and possible pit, neither of which are typical of UST signature.

Additional Comments: The equipment used in this survey included LMX 200 Enhanced GPR with onboard GPS, RD 540 sewer locator kit, RD8200 G EMF transmitter and receiver and TW-6 RI scanner.

All were in good working order and performed to manufacturers standards.

On site personnel included Samantha Golding of AEI and Simon Taylor of Foresite Engineering Surveys, compiler of this report.

No safety issues were present on this site. Owner provided access to all areas.

The soils provided good GPR results to over 9ft below grade.

This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

Screenshot_1.jpg
Figure 1
Pink dot denotes top of cylindrical (UST # 2) reflection almost 3ft deep and 4 feet wide.

This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

Screenshot_2.jpg
Figure 2
Pink dot denotes possible cement debris 2ft 6 in deep.

This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

Screenshot_3.jpg
Figure 3
Left pink dot suggests cylinder reflection (UST # 1), rear end, almost 4ft diameter at just over 4ft deep and perhaps 7ft in length.

On the right the pink dot suggests a possible pipe or debris at approximately 2ft deep.

This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

Screenshot_4.jpg
Figure 4
Pink dot suggests cylinder (UST #1) at 4ft deep, front end closest to street.

This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

Screenshot_5.jpg
Figure 5
Pink dots suggest debris 2ft below surface to almost 6ft.

This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

Screenshot_6.jpg
Figure 6
Purple dots 0ft 6 in deep suggest flat cover of pit to 8 feet in depth, NOT a typical indicator of UST cylinder.

This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

ResultsMap.jpg
Figure 7
This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

Results of survey shown on Google image for properties 10857,-67,-77 & -87 Linda Vista Dr,Cupertino,CA

line1-profile.png
Figure 8
Profile of soils scan showing assumed buried items in colored dots This report is created using a Sensors & Software EKKO_Project software template.

All content, interpretations, conclusions and recommendations are created by the user and Sensors & Software is not responsible for the reliability or veracity of the contents report.

APPENDIX B
Boring Logs

0.5 6.8

9.5 11.0

11.3 12.0
Topsoil/fill material, 6 inches thick
SILT (MH) with gravel, dark yellowish brown (10YR 3/6), stiff, moist, fines to fine gravel, low plasticity, no odor, roots
Grades to dark brown (10YR 3/3) at 4.25 feet
SAND (SW) with fine gravel, dark yellowish brown (10YR 4/4), medium dense, moist, fine sand to fine gravel, no odor, no roots Grades to very dark grayish brown (10YR 3/2) at 8.5 feet Grades to dark yellowish brown (10YR 4/4) at 9 feet
SILTY SAND (SM) dark yellowish brown (10YR 4/4), medium dense, moist, fines to fine gravel, no odor
CLAYEY SILT (ML) dark yellowish brown (10YR 4/4), very stiff, moist, fines to fine sand, low plasticity, no odor
SILTY SAND (SM) dark yellowish brown (10YR 4/4), medium dense, moist, fines to fine gravel, no odor
Bottom of borehole at 12.0 feet.

SB-1-4
SB-1-6
SB-1-8.25
SB-1-12

0.1 0.0

0.0 0.1

0.0 0.2
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

5.0 7.5

10.0 MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-1
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:21 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

0.5 4.0

6.0 11.5

12.0 Topsoil/fill material, 6 inches thick
SILT (MH) with fine gravel, dark yellowish brown (10YR 4/4), medium stiff, moist, fines to fine gravel, low plasticity, no odor, with roots and brick fragments
With no brick fragments at 3.5 feet
CLAYEY SILT (ML) with fine gravel, dark brown (10YR 3/3), very stiff, moist, fines to fine gravel, medium plasticity, no odor SANDS (SW) with fine gravel, dark yellowish brown (10YR 3/4), medium dense, moist, fine sand to fine gravel, no odor
Grades to yellowish brown (10YR 5/6) at 7.5 feet
Grades to dark yellowish brown (10YR 3/4) at 8 feet
SILTY SAND (SM) dark yellowish brown (10YR 4/4), medium dense, moist, fines to fine gravel, no odor
Bottom of borehole at 12.0 feet.

SB-2A-6
SB-2A-10
SB-2A-12

0.1 0.0

0.2 0.1

0.1 0.0
NOTES Step-out location

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

5.0 7.5

10.0 MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-2A
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:21 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

0.5 4.3

10.5 10.8

12.0 Fill material, 6 inches thick
SILT (MH) with fine gravel, dark yellowish brown (10YR 4/4), stiff, moist, fines to fine gravel, low plasticity, no odor, roots SAND (SW) with fine gravel, dark yellowish brown (10YR 3/4), medium dense, moist, fine sand to fine gravel, no odor
Grades to yellowish brown (10YR 5/6) for 3 inches at 7.5 feet CLAYEY SILT (ML) dark yellowish brown (10YR 3/4), very stiff, moist, fines, low plasticity, no odor
SAND (SW) with trace fine gravel, dark yellowish brown (10YR 3/4), medium dense, moist, fine sand to fine gravel, no odor
Bottom of borehole at 12.0 feet.

SB-3B-6
SB-3B-10
SB-3B-12

0.1 0.0

0.0 0.0

0.1 0.0
NOTES Second step-out location

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

5.0 7.5

10.0 MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-3B
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:21 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

0.5 5.0

7.5 12.0
Topsoil/fill material, 6 inches thick
SILT (MH) with fine gravel, dark yellowish brown (10YR 4/4), medium stiff, moist, fines to fine gravel, low plasticity, no odor, roots GRAVELLY SAND (SW) dark yellowish brown (10YR 3/4), loose, moist, fine sand to fine gravel, no odor
SILTY SAND (SM) dark brown (10YR 3/3), medium dense, moist, fine sand to medium sand, no odor
Grades to silty sand with fine gravel, dark yellowish brown (10YR 3/4), fines to fine gravel at 8 feet
Bottom of borehole at 12.0 feet.

SB-4-6
SB-4-7.5
SB-4-12

0.0 0.0

0.0 0.1

0.0 0.2
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

5.0 7.5

10.0 MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-4
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:21 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

0.5 4.0
Topsoil/fill material, 6 inches thick
SILT (MH) with some fine gravel, dark yellowish brown (10YR 4/4), medium stiff, moist, fines to fine gravel, low plasticity, no odor, roots Bottom of borehole at 4.0 feet.

SB-5-1.5
SB-5-4

0.0 0.1
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-5
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:21 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

0.3 4.0
Fill material, 3 inches thick
SILT (MH) with trace fine gravel, dark yellowish brown (10YR 4/4), medium stiff, moist, fines to fine gravel, low plasticity, no odor, roots Change to silt with fine gravel at 2.5 feet
Bottom of borehole at 4.0 feet.

SB-6-1.5
SB-6-4

0.0 0.1
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-6
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:21 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

0.3 4.0
Fill material with wood fragments, 3 inches thick
SILT (MH) with some fine gravel, dark yellowish brown (10YR 4/4), medium stiff, moist, fines to fine gravel, low plasticity, no odor, roots Bottom of borehole at 4.0 feet.

SB-7-1.5
SB-7-4

0.1 0.1
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-7
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:21 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

0.3 4.0
Topsoil/fill material, 3 inches thick
SILT (MH) with trace fine gravel, dark yellowish brown (10YR 4/4), medium stiff, moist, fines to fine gravel, low plasticity, no odor, roots Bottom of borehole at 4.0 feet.

SB-8-1.5
SB-8-4

0.2 0.1
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-8
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:22 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

SB-9-1.5
SB-9-4

0.1 0.0
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-9
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:22 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

SB-10-1.5
SB-10-4

0.2 0.2
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-10
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:22 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

SB-11-1.5
SB-11-4

0.1 0.1
NOTES

GROUND ELEVATION
LOGGED BY S. Golding
DRILLING METHOD Direct Push
DRILLING CONTRACTOR ECA GROUND WATER LEVELS:

CHECKED BY J. Smith
DATE STARTED 9/19/23 COMPLETED 9/19/23
AT TIME OF DRILLING --- Not encountered

AT END OF DRILLING ---

AFTER DRILLING ---
HOLE SIZE 2.25 inches

GRAPHIC
LOG
DEPTH
(ft)

0.0 2.5

MATERIAL DESCRIPTION COMPLETION

SAMPLE TYPE
NUMBER
BLOW
COUNTS
PID DATA (ppm)
PAGE 1 OF 1
BORING NUMBER SB-11
CLIENT Evulich Trust
PROJECT NUMBER 482220
PROJECT NAME Limited Phase II Subsurface Investigation
PROJECT LOCATION 10857, -67, -77, and -87 Linda Vista Dr, Cupertino CA AEI BORING - GINT STD US LAB.GDT - 10/10/23 16:22 - P:\COMPANYWIDE PROJECTS\482000 SERIES\482220 CUPERTINO, CA\PHII\DELIVERABLES\WORKING DOCUMENT\482220 CUPERTINO CA PHII BORING LOGS.GPJ AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Telephone: 925-746-6028

APPENDIX C
Laboratory Analytical
Report

AEI Consultants
2500 Camino Diablo
Walnut Creek, California 94597
Tel: 925-746-6048
RE: 10857; -67; -77; and -87 Linda Vista Drive
Torrent Laboratory, Inc. received 36 sample(s) on September 19, 2023 for the analyses presented in the following Report.

Dear Jeremy Smith:

Work Order No.: 2309157 Rev: 1
All data for associated QC met EPA or laboratory specification(s) except where noted in the case narrative.

Torrent Laboratory, Inc. is certified by the State of California, ELAP #1991 . If you have any questions regarding these test results, please feel free to contact the Project Management Team at (408)263-5258; ext 204.

Date
September 26, 2023
Kathie Evans
Project Manager

Page 1 of 71 ends

Date: 9/26/2023
Client: AEI Consultants
Project: 10857; -67; -77; and -87 Linda Vista Drive
Work Order: 2309157

CASE NARRATIVE
Unless otherwise indicated in the following narrative, no issues encountered with the receiving, preparation, analysis or reporting of the results associated with this work order.

Unless otherwise indicated in the following narrative, no results have been method and/or field blank corrected.

Reported results relate only to the items/samples tested by the laboratory.

This report shall not be reproduced, except in full, without the written approval of Torrent Laboratory, Inc.

Note: for 8260B VOCs: Final result & MDL/PQL (Detection Limit/Reporting limit) have been corrected for actual mass removed from the Encore container.

REVISIONS
Per client request, report revised to change the project name.

Rev. 1 (10/10/23)

Page 2 of 71 ends

Report prepared for: Jeremy Smith
AEI Consultants
Date Received: 09/19/23
Date Reported: 09/26/23
Sample Result Summary
2309157-001SB-1-6'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
TPH as Diesel mg/Kg12.32.00.661SW8015B
2309157-002SB-1-12'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
TPH as Diesel mg/Kg3.072.00.661SW8015B
2309157-003TSB-1-6'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
All compounds were non-detectable for this sample.
2309157-004TSB-1-12'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
All compounds were non-detectable for this sample.
2309157-005SB-2A-6'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
TPH as Diesel mg/Kg4.842.00.661SW8015B
2309157-006SB-2A-12'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
TPH as Diesel mg/Kg3.222.00.661SW8015B
2309157-007TSB-2A-6'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
All compounds were non-detectable for this sample.
2309157-008TSB-2A-12'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
All compounds were non-detectable for this sample.
2309157-009SB-3B-6'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
TPH as Diesel mg/Kg6.262.00.661SW8015B
TPH as Motor Oil mg/Kg7.125.00.761SW8015B
2309157-010SB-3B-12'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
TPH as Diesel mg/Kg4.832.00.661SW8015B

Page 3 of 71 ends

Report prepared for: Jeremy Smith
AEI Consultants
Date Received: 09/19/23
Date Reported: 09/26/23
Sample Result Summary
2309157-011TSB-3B-6'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
All compounds were non-detectable for this sample.
2309157-012TSB-3B-12'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
All compounds were non-detectable for this sample.
2309157-013SB-4-6'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
TPH as Diesel mg/Kg2.662.00.661SW8015B
2309157-014SB-4-12'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
TPH as Diesel mg/Kg5.532.00.661SW8015B
2309157-015TSB-4-6'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
All compounds were non-detectable for this sample.
2309157-016TSB-4-12'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
All compounds were non-detectable for this sample.
2309157-017SB-5-1.5'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
Arsenic mg/Kg2.751.30.151SW6010B
Lead mg/Kg6.853.00.121SW6010B
4,4'-DDE ug/Kg6.452.00.611SW8081B
4,4'-DDT ug/Kg5.632.00.741SW8081B
2309157-018SB-6-1.5'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
Arsenic mg/Kg3.551.30.151SW6010B
Lead mg/Kg10.23.00.121SW6010B
2309157-019SB-7-1.5'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
Arsenic mg/Kg3.161.30.151SW6010B
Lead mg/Kg7.053.00.121SW6010B

Page 4 of 71 ends

Report prepared for: Jeremy Smith
AEI Consultants
Date Received: 09/19/23
Date Reported: 09/26/23
Sample Result Summary
2309157-020SB-8-1.5'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
Arsenic mg/Kg2.891.30.151SW6010B
Lead mg/Kg10.53.00.121SW6010B
2309157-021SB-9-1.5'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
Arsenic mg/Kg2.581.30.151SW6010B
Lead mg/Kg7.403.00.121SW6010B
2309157-022SB-10-1.5'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
Arsenic mg/Kg3.191.30.151SW6010B
Lead mg/Kg8.253.00.121SW6010B
4,4'-DDE ug/Kg27.86.01.83SW8081B
Dieldrin ug/Kg1.296.00.743SW8081B
4,4'-DDD ug/Kg2.406.01.93SW8081B
4,4'-DDT ug/Kg10.76.02.23SW8081B
2309157-023SB-11-1.5'
Parameters: PQLMDL UnitResultsDFAnalysis
Method
Arsenic mg/Kg2.671.30.151SW6010B
Lead mg/Kg8.553.00.121SW6010B
4,4'-DDE ug/Kg4.692.00.611SW8081B
4,4'-DDT ug/Kg2.722.00.741SW8081B

Page 5 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 9:52
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-1-6'
SoilSample Matrix:

Lab Sample ID: 2309157-001A
SDG:

Prep Batch ID: 1154541
Prep Batch Date/Time: 9/20/23 12:41:00PM
Prep Analyst: NDUM
Prep Method: 3546_TPH
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
x12.3TPH as Diesel 09/21/230.66 2.01 mg/Kg 478245SW8015B 19:22 SN NDTPH as Motor Oil 09/21/230.76 5.01 mg/Kg 478245SW8015B 19:22 SN Acceptance Limits

91.7Pentacosane (S) 09/21/23% 478245SW8015B 19:22 SN45 - 130 NOTE: x- Chromatographic pattern does not resemble typical diesel reference standard; unknown organics within diesel range quantified as diesel.

Page 6 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 9:52
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-1-6'
SoilSample Matrix:

Lab Sample ID: 2309157-001A
SDG:

Prep Batch ID: 1154617
Prep Batch Date/Time: 9/21/23 10:45:00AM
Prep Analyst: HVYAS
Prep Method: 5035GRO
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDTPH as Gasoline 09/21/2343 1001 ug/Kg 478191SW8260B(TPH )
14:53 HV

62.4(S) 4-Bromofluorobenzene 09/21/23% 478191SW8260B(TPH )
14:53 HV43.9 - 127

Page 7 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 10:20
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-1-12'
SoilSample Matrix:

Lab Sample ID: 2309157-002A
SDG:

Prep Batch ID: 1154541
Prep Batch Date/Time: 9/20/23 12:41:00PM
Prep Analyst: NDUM
Prep Method: 3546_TPH
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
x3.07TPH as Diesel 09/21/230.66 2.01 mg/Kg 478245SW8015B 19:48 SN NDTPH as Motor Oil 09/21/230.76 5.01 mg/Kg 478245SW8015B 19:48 SN Acceptance Limits

85.2Pentacosane (S) 09/21/23% 478245SW8015B 19:48 SN45 - 130 NOTE: x- Chromatographic pattern does not resemble typical diesel reference standard; unknown organics within diesel range quantified as diesel.

Page 8 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 10:20
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-1-12'
SoilSample Matrix:

Lab Sample ID: 2309157-002A
SDG:

Prep Batch ID: 1154617
Prep Batch Date/Time: 9/21/23 10:45:00AM
Prep Analyst: HVYAS
Prep Method: 5035GRO
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDTPH as Gasoline 09/21/2343 1001 ug/Kg 478191SW8260B(TPH )
15:29 HV

59.3(S) 4-Bromofluorobenzene 09/21/23% 478191SW8260B(TPH )
15:29 HV43.9 - 127

Page 9 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 9:52
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-1-6'
SoilSample Matrix:

Lab Sample ID: 2309157-003A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDDichlorodifluoromethane 09/20/231.2 9.81 ug/Kg 478150SW8260B 17:47 HV NDChloromethane 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDVinyl Chloride 09/20/232.0 9.81 ug/Kg 478150SW8260B 17:47 HV NDBromomethane 09/20/232.6 9.81 ug/Kg 478150SW8260B 17:47 HV NDChloroethane 09/20/233.0 9.81 ug/Kg 478150SW8260B 17:47 HV NDTrichlorofluoromethane 09/20/232.0 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,1-Dichloroethene 09/20/232.0 9.81 ug/Kg 478150SW8260B 17:47 HV NDFreon 113 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDMethylene Chloride 09/20/236.9 9.81 ug/Kg 478150SW8260B 17:47 HV NDtrans-1,2-Dichloroethene 09/20/232.0 9.81 ug/Kg 478150SW8260B 17:47 HV NDMTBE 09/20/232.3 9.81 ug/Kg 478150SW8260B 17:47 HV
NDTBA 09/20/2311 48.91 ug/Kg 478150SW8260B 17:47 HV
NDDiisopropyl ether 09/20/232.2 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,1-Dichloroethane 09/20/232.2 9.81 ug/Kg 478150SW8260B 17:47 HV NDEthyl tert-Butyl ether 09/20/232.2 9.81 ug/Kg 478150SW8260B 17:47 HV NDcis-1,2-Dichloroethene 09/20/232.2 9.81 ug/Kg 478150SW8260B 17:47 HV ND2,2-Dichloropropane 09/20/231.9 9.81 ug/Kg 478150SW8260B 17:47 HV NDBromochloromethane 09/20/232.3 9.81 ug/Kg 478150SW8260B 17:47 HV NDChloroform 09/20/232.3 9.81 ug/Kg 478150SW8260B 17:47 HV NDCarbon Tetrachloride 09/20/232.0 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,1,1-Trichloroethane 09/20/232.0 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,1-Dichloropropene 09/20/231.9 9.81 ug/Kg 478150SW8260B 17:47 HV NDBenzene 09/20/232.2 9.81 ug/Kg 478150SW8260B 17:47 HV NDTAME 09/20/232.2 9.81 ug/Kg 478150SW8260B 17:47 HV
ND1,2-Dichloroethane 09/20/232.3 9.81 ug/Kg 478150SW8260B 17:47 HV NDTrichloroethene 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDDibromomethane 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,2-Dichloropropane 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDBromodichloromethane 09/20/231.9 9.81 ug/Kg 478150SW8260B 17 :47 HV NDcis-1,3-Dichloropropene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV NDToluene 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDTetrachloroethylene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV NDtrans-1,3-Dichloropropene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,1,2-Trichloroethane 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDDibromochloromethane 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,3-Dichloropropane 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,2-Dibromoethane 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDChlorobenzene 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDEthylbenzene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV

Page 10 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 9:52
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-1-6'
SoilSample Matrix:

Lab Sample ID: 2309157-003A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
ND1,1,1,2-Tetrachloroethane 09/20/231.9 9.81 ug/Kg 478150SW8260B 17:47 HV NDm,p-Xylene 09/20/233.1 9.81 ug/Kg 478150SW8260B 17:47 HV NDo-Xylene 09/20/231.7 9.81 ug/Kg 478150SW8260B 17:47 HV NDStyrene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV NDBromoform 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV NDIsopropyl Benzene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV NDn-Propylbenzene 09/20/231.5 9.81 ug/Kg 478150SW8260B 17:47 HV NDBromobenzene 09/20/231.7 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,1,2,2-Tetrachloroethane 09/20/231.9 9.81 ug/Kg 478150SW8260B 17:47 HV ND2-Chlorotoluene 09/20/231.7 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,3,5-Trimethylbenzene 09/20/231.5 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,2,3-Trichloropropane 09/20/231.9 9.81 ug/Kg 478150SW8260B 17:47 HV ND4-Chlorotoluene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV NDtert-Butylbenzene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,2,4-Trimethylbenzene 09/20/231.3 9.81 ug/Kg 478150SW8260B 17:47 HV NDsec-Butyl Benzene 09/20/231.5 9.81 ug/Kg 478150SW8260B 17:47 HV NDp-Isopropyltoluene 09/20/231.4 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,3-Dichlorobenzene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,4-Dichlorobenzene 09/20/231.7 9.81 ug/Kg 478150SW8260B 17:47 HV NDn-Butylbenzene 09/20/231.4 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,2-Dichlorobenzene 09/20/231.7 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,2-Dibromo-3-Chloropropane 09/20/231.8 9.81 ug/Kg 478150SW8260B 17:47 HV NDHexachlorobutadiene 09/20/231.3 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,2,4-Trichlorobenzene 09/20/231.4 9.81 ug/Kg 478150SW8260B 17:47 HV NDNaphthalene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV ND1,2,3-Trichlorobenzene 09/20/231.6 9.81 ug/Kg 478150SW8260B 17:47 HV ND2-Butanone 09/20/232.2 9.781 ug/Kg 478150SW8260B 17:47 HV

93.3(S) Dibromofluoromethane 09/20/23% 478150SW8260B 17:47 HV59.8 - 148 101(S) Toluene-d8 09/20/23% 478150SW8260B 17:47 HV55 .2 - 133 103(S) 4-Bromofluorobenzene 09/20/23% 478150SW8260B 17:47 HV55.8 - 141

Page 11 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 10:20
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-1-12'
SoilSample Matrix:

Lab Sample ID: 2309157-004A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDDichlorodifluoromethane 09/20/232.2 181 ug/Kg 478150SW8260B 18:17 HV NDChloromethane 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV NDVinyl Chloride 09/20/233.6 181 ug/Kg 478150SW8260B 18:17 HV NDBromomethane 09/20/234.7 181 ug/Kg 478150SW8260B 18:17 HV NDChloroethane 09/20/235.3 181 ug/Kg 478150SW8260B 18:17 HV NDTrichlorofluoromethane 09/20/233.6 181 ug/Kg 478150SW8260B 18:17 HV ND1,1-Dichloroethene 09/20/233.6 181 ug/Kg 478150SW8260B 18:17 HV NDFreon 113 09/20/233.3 181 ug/Kg 478150SW8260B 18:17 HV NDMethylene Chloride 09/20/2312 181 ug/Kg 478150SW8260B 18:17 HV NDtrans-1,2-Dichloroethene 09/20/233.7 181 ug/Kg 478150SW8260B 18:17 HV NDMTBE 09/20/234.1 181 ug/Kg 478150SW8260B 18:17 HV
NDTBA 09/20/2320 87.71 ug/Kg 478150SW8260B 18:17 HV
NDDiisopropyl ether 09/20/234.0 181 ug/Kg 478150SW8260B 18:17 HV ND1,1-Dichloroethane 09/20/233.9 181 ug/Kg 478150SW8260B 18:17 HV NDEthyl tert-Butyl ether 09/20/234.0 181 ug/Kg 478150SW8260B 18:17 HV NDcis-1,2-Dichloroethene 09/20/233.9 181 ug/Kg 478150SW8260B 18:17 HV ND2,2-Dichloropropane 09/20/233.4 181 ug/Kg 478150SW8260B 18:17 HV NDBromochloromethane 09/20/234.1 181 ug/Kg 478150SW8260B 18:17 HV NDChloroform 09/20/234.1 181 ug/Kg 478150SW8260B 18:17 HV NDCarbon Tetrachloride 09/20/233.6 181 ug/Kg 478150SW8260B 18:17 HV ND1,1,1-Trichloroethane 09/20/233.7 181 ug/Kg 478150SW8260B 18:17 HV ND1,1-Dichloropropene 09/20/233.5 181 ug/Kg 478150SW8260B 18:17 HV NDBenzene 09/20/233.9 181 ug/Kg 478150SW8260B 18:17 HV NDTAME 09/20/234.0 181 ug/Kg 478150SW8260B 18:17 HV
ND1,2-Dichloroethane 09/20/234.1 181 ug/Kg 478150SW8260B 18:17 HV NDTrichloroethene 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV NDDibromomethane 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV ND1,2-Dichloropropane 09/20/233.3 181 ug/Kg 478150SW8260B 18:17 HV NDBromodichloromethane 09/20/233.5 181 ug/Kg 478150SW8260B 18 :17 HV NDcis-1,3-Dichloropropene 09/20/232.8 181 ug/Kg 478150SW8260B 18:17 HV NDToluene 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV
NDTetrachloroethylene 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV NDtrans-1,3-Dichloropropene 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV ND1,1,2-Trichloroethane 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV NDDibromochloromethane 09/20/233.3 181 ug/Kg 478150SW8260B 18:17 HV ND1,3-Dichloropropane 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV ND1,2-Dibromoethane 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV NDChlorobenzene 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV NDEthylbenzene 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV

Page 12 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 10:20
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-1-12'
SoilSample Matrix:

Lab Sample ID: 2309157-004A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
ND1,1,1,2-Tetrachloroethane 09/20/233.4 181 ug/Kg 478150SW8260B 18:17 HV NDm,p-Xylene 09/20/235.5 181 ug/Kg 478150SW8260B 18:17 HV NDo-Xylene 09/20/233.0 181 ug/Kg 478150SW8260B 18:17 HV NDStyrene 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV NDBromoform 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV NDIsopropyl Benzene 09/20/232.8 181 ug/Kg 478150SW8260B 18:17 HV NDn-Propylbenzene 09/20/232.7 181 ug/Kg 478150SW8260B 18:17 HV NDBromobenzene 09/20/233.1 181 ug/Kg 478150SW8260B 18:17 HV ND1,1,2,2-Tetrachloroethane 09/20/233.4 181 ug/Kg 478150SW8260B 18:17 HV ND2-Chlorotoluene 09/20/233.1 181 ug/Kg 478150SW8260B 18:17 HV ND1,3,5-Trimethylbenzene 09/20/232.8 181 ug/Kg 478150SW8260B 18:17 HV ND1,2,3-Trichloropropane 09/20/233.3 181 ug/Kg 478150SW8260B 18:17 HV ND4-Chlorotoluene 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV NDtert-Butylbenzene 09/20/232.8 181 ug/Kg 478150SW8260B 18:17 HV ND1,2,4-Trimethylbenzene 09/20/232.4 181 ug/Kg 478150SW8260B 18:17 HV NDsec-Butyl Benzene 09/20/232.7 181 ug/Kg 478150SW8260B 18:17 HV NDp-Isopropyltoluene 09/20/232.6 181 ug/Kg 478150SW8260B 18:17 HV ND1,3-Dichlorobenzene 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV ND1,4-Dichlorobenzene 09/20/233.0 181 ug/Kg 478150SW8260B 18:17 HV NDn-Butylbenzene 09/20/232.5 181 ug/Kg 478150SW8260B 18:17 HV ND1,2-Dichlorobenzene 09/20/233.1 181 ug/Kg 478150SW8260B 18:17 HV ND1,2-Dibromo-3-Chloropropane 09/20/233.2 181 ug/Kg 478150SW8260B 18:17 HV NDHexachlorobutadiene 09/20/232.4 181 ug/Kg 478150SW8260B 18:17 HV ND1,2,4-Trichlorobenzene 09/20/232.6 181 ug/Kg 478150SW8260B 18:17 HV NDNaphthalene 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV ND1,2,3-Trichlorobenzene 09/20/232.9 181 ug/Kg 478150SW8260B 18:17 HV ND2-Butanone 09/20/234.0 17.51 ug/Kg 478150SW8260B 18:17 HV

82.7(S) Dibromofluoromethane 09/20/23% 478150SW8260B 18:17 HV59.8 - 148 104(S) Toluene-d8 09/20/23% 478150SW8260B 18:17 HV55 .2 - 133

99.3(S) 4-Bromofluorobenzene 09/20/23% 478150SW8260B 18:17 HV55.8 - 141

Page 13 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 11:19
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-2A-6'
SoilSample Matrix:

Lab Sample ID: 2309157-005A
SDG:

Prep Batch ID: 1154541
Prep Batch Date/Time: 9/20/23 12:41:00PM
Prep Analyst: NDUM
Prep Method: 3546_TPH
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
x4.84TPH as Diesel 09/21/230.66 2.01 mg/Kg 478245SW8015B 20:13 SN NDTPH as Motor Oil 09/21/230.76 5.01 mg/Kg 478245SW8015B 20:13 SN Acceptance Limits

80.9Pentacosane (S) 09/21/23% 478245SW8015B 20:13 SN45 - 130 NOTE: x- Chromatographic pattern does not resemble typical diesel reference standard; unknown organics within diesel range quantified as diesel.

Page 14 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 11:19
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-2A-6'
SoilSample Matrix:

Lab Sample ID: 2309157-005A
SDG:

Prep Batch ID: 1154617
Prep Batch Date/Time: 9/21/23 10:45:00AM
Prep Analyst: HVYAS
Prep Method: 5035GRO
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDTPH as Gasoline 09/21/2343 1001 ug/Kg 478191SW8260B(TPH )
19:41 HV

60.1(S) 4-Bromofluorobenzene 09/21/23% 478191SW8260B(TPH )
19:41 HV43.9 - 127

Page 15 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 11:42
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-2A-12'
SoilSample Matrix:

Lab Sample ID: 2309157-006A
SDG:

Prep Batch ID: 1154541
Prep Batch Date/Time: 9/20/23 12:41:00PM
Prep Analyst: NDUM
Prep Method: 3546_TPH
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
x3.22TPH as Diesel 09/21/230.66 2.01 mg/Kg 478245SW8015B 20:39 SN NDTPH as Motor Oil 09/21/230.76 5.01 mg/Kg 478245SW8015B 20:39 SN Acceptance Limits

90.3Pentacosane (S) 09/21/23% 478245SW8015B 20:39 SN45 - 130 NOTE: x- Chromatographic pattern does not resemble typical diesel reference standard; unknown organics within diesel range quantified as diesel.

Page 16 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 11:42
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-2A-12'
SoilSample Matrix:

Lab Sample ID: 2309157-006A
SDG:

Prep Batch ID: 1154617
Prep Batch Date/Time: 9/21/23 10:45:00AM
Prep Analyst: HVYAS
Prep Method: 5035GRO
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDTPH as Gasoline 09/21/2343 1001 ug/Kg 478191SW8260B(TPH )
16:41 HV

66.5(S) 4-Bromofluorobenzene 09/21/23% 478191SW8260B(TPH )
16:41 HV43.9 - 127

Page 17 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 11:19
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-2A-6'
SoilSample Matrix:

Lab Sample ID: 2309157-007A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDDichlorodifluoromethane 09/20/231.8 141 ug/Kg 478150SW8260B 18:48 HV NDChloromethane 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV NDVinyl Chloride 09/20/232.9 141 ug/Kg 478150SW8260B 18:48 HV NDBromomethane 09/20/233.8 141 ug/Kg 478150SW8260B 18:48 HV NDChloroethane 09/20/234.3 141 ug/Kg 478150SW8260B 18:48 HV NDTrichlorofluoromethane 09/20/232.9 141 ug/Kg 478150SW8260B 18:48 HV ND1,1-Dichloroethene 09/20/232.9 141 ug/Kg 478150SW8260B 18:48 HV NDFreon 113 09/20/232.7 141 ug/Kg 478150SW8260B 18:48 HV NDMethylene Chloride 09/20/2310 141 ug/Kg 478150SW8260B 18:48 HV NDtrans-1,2-Dichloroethene 09/20/233.0 141 ug/Kg 478150SW8260B 18:48 HV NDMTBE 09/20/233.3 141 ug/Kg 478150SW8260B 18:48 HV
NDTBA 09/20/2317 71.41 ug/Kg 478150SW8260B 18:48 HV
NDDiisopropyl ether 09/20/233.3 141 ug/Kg 478150SW8260B 18:48 HV ND1,1-Dichloroethane 09/20/233.2 141 ug/Kg 478150SW8260B 18:48 HV NDEthyl tert-Butyl ether 09/20/233.3 141 ug/Kg 478150SW8260B 18:48 HV NDcis-1,2-Dichloroethene 09/20/233.2 141 ug/Kg 478150SW8260B 18:48 HV ND2,2-Dichloropropane 09/20/232.7 141 ug/Kg 478150SW8260B 18:48 HV NDBromochloromethane 09/20/233.3 141 ug/Kg 478150SW8260B 18:48 HV NDChloroform 09/20/233.4 141 ug/Kg 478150SW8260B 18:48 HV NDCarbon Tetrachloride 09/20/232.9 141 ug/Kg 478150SW8260B 18:48 HV ND1,1,1-Trichloroethane 09/20/233.0 141 ug/Kg 478150SW8260B 18:48 HV ND1,1-Dichloropropene 09/20/232.8 141 ug/Kg 478150SW8260B 18:48 HV NDBenzene 09/20/233.2 141 ug/Kg 478150SW8260B 18:48 HV NDTAME 09/20/233.2 141 ug/Kg 478150SW8260B 18:48 HV
ND1,2-Dichloroethane 09/20/233.3 141 ug/Kg 478150SW8260B 18:48 HV NDTrichloroethene 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV NDDibromomethane 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV ND1,2-Dichloropropane 09/20/232.7 141 ug/Kg 478150SW8260B 18:48 HV NDBromodichloromethane 09/20/232.8 141 ug/Kg 478150SW8260B 18 :48 HV NDcis-1,3-Dichloropropene 09/20/232.3 141 ug/Kg 478150SW8260B 18:48 HV NDToluene 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV
NDTetrachloroethylene 09/20/232.4 141 ug/Kg 478150SW8260B 18:48 HV NDtrans-1,3-Dichloropropene 09/20/232.3 141 ug/Kg 478150SW8260B 18:48 HV ND1,1,2-Trichloroethane 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV NDDibromochloromethane 09/20/232.7 141 ug/Kg 478150SW8260B 18:48 HV ND1,3-Dichloropropane 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV ND1,2-Dibromoethane 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV NDChlorobenzene 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV NDEthylbenzene 09/20/232.4 141 ug/Kg 478150SW8260B 18:48 HV

Page 18 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 11:19
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-2A-6'
SoilSample Matrix:

Lab Sample ID: 2309157-007A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
ND1,1,1,2-Tetrachloroethane 09/20/232.8 141 ug/Kg 478150SW8260B 18:48 HV NDm,p-Xylene 09/20/234.5 141 ug/Kg 478150SW8260B 18:48 HV NDo-Xylene 09/20/232.5 141 ug/Kg 478150SW8260B 18:48 HV NDStyrene 09/20/232.3 141 ug/Kg 478150SW8260B 18:48 HV NDBromoform 09/20/232.4 141 ug/Kg 478150SW8260B 18:48 HV NDIsopropyl Benzene 09/20/232.3 141 ug/Kg 478150SW8260B 18:48 HV NDn-Propylbenzene 09/20/232.2 141 ug/Kg 478150SW8260B 18:48 HV NDBromobenzene 09/20/232.5 141 ug/Kg 478150SW8260B 18:48 HV ND1,1,2,2-Tetrachloroethane 09/20/232.7 141 ug/Kg 478150SW8260B 18:48 HV ND2-Chlorotoluene 09/20/232.5 141 ug/Kg 478150SW8260B 18:48 HV ND1,3,5-Trimethylbenzene 09/20/232.2 141 ug/Kg 478150SW8260B 18:48 HV ND1,2,3-Trichloropropane 09/20/232.7 141 ug/Kg 478150SW8260B 18:48 HV ND4-Chlorotoluene 09/20/232.3 141 ug/Kg 478150SW8260B 18:48 HV NDtert-Butylbenzene 09/20/232.3 141 ug/Kg 478150SW8260B 18:48 HV ND1,2,4-Trimethylbenzene 09/20/231.9 141 ug/Kg 478150SW8260B 18:48 HV NDsec-Butyl Benzene 09/20/232.2 141 ug/Kg 478150SW8260B 18:48 HV NDp-Isopropyltoluene 09/20/232.1 141 ug/Kg 478150SW8260B 18:48 HV ND1,3-Dichlorobenzene 09/20/232.4 141 ug/Kg 478150SW8260B 18:48 HV ND1,4-Dichlorobenzene 09/20/232.4 141 ug/Kg 478150SW8260B 18:48 HV NDn-Butylbenzene 09/20/232.1 141 ug/Kg 478150SW8260B 18:48 HV ND1,2-Dichlorobenzene 09/20/232.5 141 ug/Kg 478150SW8260B 18:48 HV ND1,2-Dibromo-3-Chloropropane 09/20/232.6 141 ug/Kg 478150SW8260B 18:48 HV NDHexachlorobutadiene 09/20/232.0 141 ug/Kg 478150SW8260B 18:48 HV ND1,2,4-Trichlorobenzene 09/20/232.1 141 ug/Kg 478150SW8260B 18:48 HV NDNaphthalene 09/20/232.4 141 ug/Kg 478150SW8260B 18:48 HV ND1,2,3-Trichlorobenzene 09/20/232.4 141 ug/Kg 478150SW8260B 18:48 HV ND2-Butanone 09/20/233.3 14.31 ug/Kg 478150SW8260B 18:48 HV

80.5(S) Dibromofluoromethane 09/20/23% 478150SW8260B 18:48 HV59.8 - 148 105(S) Toluene-d8 09/20/23% 478150SW8260B 18:48 HV55 .2 - 133

96.7(S) 4-Bromofluorobenzene 09/20/23% 478150SW8260B 18:48 HV55.8 - 141

Page 19 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 11:42
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-2A-12'
SoilSample Matrix:

Lab Sample ID: 2309157-008A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDDichlorodifluoromethane 09/20/231.6 131 ug/Kg 478150SW8260B 19:19 HV NDChloromethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV NDVinyl Chloride 09/20/232.7 131 ug/Kg 478150SW8260B 19:19 HV NDBromomethane 09/20/233.5 131 ug/Kg 478150SW8260B 19:19 HV NDChloroethane 09/20/234.0 131 ug/Kg 478150SW8260B 19:19 HV NDTrichlorofluoromethane 09/20/232.7 131 ug/Kg 478150SW8260B 19:19 HV ND1,1-Dichloroethene 09/20/232.7 131 ug/Kg 478150SW8260B 19:19 HV NDFreon 113 09/20/232.5 131 ug/Kg 478150SW8260B 19:19 HV NDMethylene Chloride 09/20/239.3 131 ug/Kg 478150SW8260B 19:19 HV NDtrans-1,2-Dichloroethene 09/20/232.7 131 ug/Kg 478150SW8260B 19:19 HV NDMTBE 09/20/233.1 131 ug/Kg 478150SW8260B 19:19 HV
NDTBA 09/20/2315 65.61 ug/Kg 478150SW8260B 19:19 HV
NDDiisopropyl ether 09/20/233.0 131 ug/Kg 478150SW8260B 19:19 HV ND1,1-Dichloroethane 09/20/232.9 131 ug/Kg 478150SW8260B 19:19 HV NDEthyl tert-Butyl ether 09/20/233.0 131 ug/Kg 478150SW8260B 19:19 HV NDcis-1,2-Dichloroethene 09/20/232.9 131 ug/Kg 478150SW8260B 19:19 HV ND2,2-Dichloropropane 09/20/232.5 131 ug/Kg 478150SW8260B 19:19 HV NDBromochloromethane 09/20/233.1 131 ug/Kg 478150SW8260B 19:19 HV NDChloroform 09/20/233.1 131 ug/Kg 478150SW8260B 19:19 HV NDCarbon Tetrachloride 09/20/232.7 131 ug/Kg 478150SW8260B 19:19 HV ND1,1,1-Trichloroethane 09/20/232.7 131 ug/Kg 478150SW8260B 19:19 HV ND1,1-Dichloropropene 09/20/232.6 131 ug/Kg 478150SW8260B 19:19 HV NDBenzene 09/20/232.9 131 ug/Kg 478150SW8260B 19:19 HV NDTAME 09/20/233.0 131 ug/Kg 478150SW8260B 19:19 HV
ND1,2-Dichloroethane 09/20/233.0 131 ug/Kg 478150SW8260B 19:19 HV NDTrichloroethene 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV NDDibromomethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV ND1,2-Dichloropropane 09/20/232.5 131 ug/Kg 478150SW8260B 19:19 HV NDBromodichloromethane 09/20/232.6 131 ug/Kg 478150SW8260B 19 :19 HV NDcis-1,3-Dichloropropene 09/20/232.1 131 ug/Kg 478150SW8260B 19:19 HV NDToluene 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV
NDTetrachloroethylene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV NDtrans-1,3-Dichloropropene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV ND1,1,2-Trichloroethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV NDDibromochloromethane 09/20/232.5 131 ug/Kg 478150SW8260B 19:19 HV ND1,3-Dichloropropane 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV ND1,2-Dibromoethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV NDChlorobenzene 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV NDEthylbenzene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV

Page 20 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 11:42
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-2A-12'
SoilSample Matrix:

Lab Sample ID: 2309157-008A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
ND1,1,1,2-Tetrachloroethane 09/20/232.5 131 ug/Kg 478150SW8260B 19:19 HV NDm,p-Xylene 09/20/234.1 131 ug/Kg 478150SW8260B 19:19 HV NDo-Xylene 09/20/232.3 131 ug/Kg 478150SW8260B 19:19 HV NDStyrene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV NDBromoform 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV NDIsopropyl Benzene 09/20/232.1 131 ug/Kg 478150SW8260B 19:19 HV NDn-Propylbenzene 09/20/232.1 131 ug/Kg 478150SW8260B 19:19 HV NDBromobenzene 09/20/232.3 131 ug/Kg 478150SW8260B 19:19 HV ND1,1,2,2-Tetrachloroethane 09/20/232.5 131 ug/Kg 478150SW8260B 19:19 HV ND2-Chlorotoluene 09/20/232.3 131 ug/Kg 478150SW8260B 19:19 HV ND1,3,5-Trimethylbenzene 09/20/232.1 131 ug/Kg 478150SW8260B 19:19 HV ND1,2,3-Trichloropropane 09/20/232.5 131 ug/Kg 478150SW8260B 19:19 HV ND4-Chlorotoluene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV NDtert-Butylbenzene 09/20/232.1 131 ug/Kg 478150SW8260B 19:19 HV ND1,2,4-Trimethylbenzene 09/20/231.8 131 ug/Kg 478150SW8260B 19:19 HV NDsec-Butyl Benzene 09/20/232.0 131 ug/Kg 478150SW8260B 19:19 HV NDp-Isopropyltoluene 09/20/231.9 131 ug/Kg 478150SW8260B 19:19 HV ND1,3-Dichlorobenzene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV ND1,4-Dichlorobenzene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV NDn-Butylbenzene 09/20/231.9 131 ug/Kg 478150SW8260B 19:19 HV ND1,2-Dichlorobenzene 09/20/232.3 131 ug/Kg 478150SW8260B 19:19 HV ND1,2-Dibromo-3-Chloropropane 09/20/232.4 131 ug/Kg 478150SW8260B 19:19 HV NDHexachlorobutadiene 09/20/231.8 131 ug/Kg 478150SW8260B 19:19 HV ND1,2,4-Trichlorobenzene 09/20/231.9 131 ug/Kg 478150SW8260B 19:19 HV NDNaphthalene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV ND1,2,3-Trichlorobenzene 09/20/232.2 131 ug/Kg 478150SW8260B 19:19 HV ND2-Butanone 09/20/233.0 13.11 ug/Kg 478150SW8260B 19:19 HV

82.9(S) Dibromofluoromethane 09/20/23% 478150SW8260B 19:19 HV59.8 - 148 104(S) Toluene-d8 09/20/23% 478150SW8260B 19:19 HV55 .2 - 133

98.5(S) 4-Bromofluorobenzene 09/20/23% 478150SW8260B 19:19 HV55.8 - 141

Page 21 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 15:37
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-3B-6'
SoilSample Matrix:

Lab Sample ID: 2309157-009A
SDG:

Prep Batch ID: 1154541
Prep Batch Date/Time: 9/20/23 12:41:00PM
Prep Analyst: NDUM
Prep Method: 3546_TPH
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
x6.26TPH as Diesel 09/26/230.66 2.01 mg/Kg 478253SW8015B 12:07 SN

7.12TPH as Motor Oil 09/26/230.76 5.01 mg/Kg 478253SW8015B 12:07 SN Acceptance Limits

85.2Pentacosane (S) 09/26/23% 478253SW8015B 12:07 SN45 - 130 NOTE: x- Chromatographic pattern does not resemble typical diesel reference standard; unknown organics within diesel range quantified as diesel.

Page 22 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 15:37
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-3B-6'
SoilSample Matrix:

Lab Sample ID: 2309157-009A
SDG:

Prep Batch ID: 1154617
Prep Batch Date/Time: 9/21/23 10:45:00AM
Prep Analyst: HVYAS
Prep Method: 5035GRO
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDTPH as Gasoline 09/21/2343 1001 ug/Kg 478191SW8260B(TPH )
17:17 HV

60.3(S) 4-Bromofluorobenzene 09/21/23% 478191SW8260B(TPH )
17:17 HV43.9 - 127

Page 23 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 15:38
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-3B-12'
SoilSample Matrix:

Lab Sample ID: 2309157-010A
SDG:

Prep Batch ID: 1154541
Prep Batch Date/Time: 9/20/23 12:41:00PM
Prep Analyst: NDUM
Prep Method: 3546_TPH
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
x4.83TPH as Diesel 09/21/230.66 2.01 mg/Kg 478245SW8015B 21:04 SN NDTPH as Motor Oil 09/21/230.76 5.01 mg/Kg 478245SW8015B 21:04 SN Acceptance Limits

77.5Pentacosane (S) 09/21/23% 478245SW8015B 21:04 SN45 - 130 NOTE: x- Chromatographic pattern does not resemble typical diesel reference standard; unknown organics within diesel range quantified as diesel.

Page 24 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 15:38
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-3B-12'
SoilSample Matrix:

Lab Sample ID: 2309157-010A
SDG:

Prep Batch ID: 1154617
Prep Batch Date/Time: 9/21/23 10:45:00AM
Prep Analyst: HVYAS
Prep Method: 5035GRO
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDTPH as Gasoline 09/21/2343 1001 ug/Kg 478191SW8260B(TPH )
17:53 HV

64.2(S) 4-Bromofluorobenzene 09/21/23% 478191SW8260B(TPH )
17:53 HV43.9 - 127

Page 25 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 15:45
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-3B-6'
SoilSample Matrix:

Lab Sample ID: 2309157-011A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDDichlorodifluoromethane 09/20/231.6 131 ug/Kg 478150SW8260B 19:50 HV NDChloromethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV NDVinyl Chloride 09/20/232.7 131 ug/Kg 478150SW8260B 19:50 HV NDBromomethane 09/20/233.5 131 ug/Kg 478150SW8260B 19:50 HV NDChloroethane 09/20/233.9 131 ug/Kg 478150SW8260B 19:50 HV NDTrichlorofluoromethane 09/20/232.7 131 ug/Kg 478150SW8260B 19:50 HV ND1,1-Dichloroethene 09/20/232.6 131 ug/Kg 478150SW8260B 19:50 HV NDFreon 113 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV NDMethylene Chloride 09/20/239.2 131 ug/Kg 478150SW8260B 19:50 HV NDtrans-1,2-Dichloroethene 09/20/232.7 131 ug/Kg 478150SW8260B 19:50 HV NDMTBE 09/20/233.1 131 ug/Kg 478150SW8260B 19:50 HV
NDTBA 09/20/2315 65.11 ug/Kg 478150SW8260B 19:50 HV
NDDiisopropyl ether 09/20/233.0 131 ug/Kg 478150SW8260B 19:50 HV ND1,1-Dichloroethane 09/20/232.9 131 ug/Kg 478150SW8260B 19:50 HV NDEthyl tert-Butyl ether 09/20/233.0 131 ug/Kg 478150SW8260B 19:50 HV NDcis-1,2-Dichloroethene 09/20/232.9 131 ug/Kg 478150SW8260B 19:50 HV ND2,2-Dichloropropane 09/20/232.5 131 ug/Kg 478150SW8260B 19:50 HV NDBromochloromethane 09/20/233.0 131 ug/Kg 478150SW8260B 19:50 HV NDChloroform 09/20/233.1 131 ug/Kg 478150SW8260B 19:50 HV NDCarbon Tetrachloride 09/20/232.7 131 ug/Kg 478150SW8260B 19:50 HV ND1,1,1-Trichloroethane 09/20/232.7 131 ug/Kg 478150SW8260B 19:50 HV ND1,1-Dichloropropene 09/20/232.6 131 ug/Kg 478150SW8260B 19:50 HV NDBenzene 09/20/232.9 131 ug/Kg 478150SW8260B 19:50 HV NDTAME 09/20/233.0 131 ug/Kg 478150SW8260B 19:50 HV
ND1,2-Dichloroethane 09/20/233.0 131 ug/Kg 478150SW8260B 19:50 HV NDTrichloroethene 09/20/232.3 131 ug/Kg 478150SW8260B 19:50 HV NDDibromomethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV ND1,2-Dichloropropane 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV NDBromodichloromethane 09/20/232.6 131 ug/Kg 478150SW8260B 19 :50 HV NDcis-1,3-Dichloropropene 09/20/232.1 131 ug/Kg 478150SW8260B 19:50 HV NDToluene 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV
NDTetrachloroethylene 09/20/232.2 131 ug/Kg 478150SW8260B 19:50 HV NDtrans-1,3-Dichloropropene 09/20/232.1 131 ug/Kg 478150SW8260B 19:50 HV ND1,1,2-Trichloroethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV NDDibromochloromethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV ND1,3-Dichloropropane 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV ND1,2-Dibromoethane 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV NDChlorobenzene 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV NDEthylbenzene 09/20/232.2 131 ug/Kg 478150SW8260B 19:50 HV

Page 26 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 15:45
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-3B-6'
SoilSample Matrix:

Lab Sample ID: 2309157-011A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
ND1,1,1,2-Tetrachloroethane 09/20/232.5 131 ug/Kg 478150SW8260B 19:50 HV NDm,p-Xylene 09/20/234.1 131 ug/Kg 478150SW8260B 19:50 HV NDo-Xylene 09/20/232.2 131 ug/Kg 478150SW8260B 19:50 HV NDStyrene 09/20/232.1 131 ug/Kg 478150SW8260B 19:50 HV NDBromoform 09/20/232.2 131 ug/Kg 478150SW8260B 19:50 HV NDIsopropyl Benzene 09/20/232.1 131 ug/Kg 478150SW8260B 19:50 HV NDn-Propylbenzene 09/20/232.0 131 ug/Kg 478150SW8260B 19:50 HV NDBromobenzene 09/20/232.3 131 ug/Kg 478150SW8260B 19:50 HV ND1,1,2,2-Tetrachloroethane 09/20/232.5 131 ug/Kg 478150SW8260B 19:50 HV ND2-Chlorotoluene 09/20/232.3 131 ug/Kg 478150SW8260B 19:50 HV ND1,3,5-Trimethylbenzene 09/20/232.0 131 ug/Kg 478150SW8260B 19:50 HV ND1,2,3-Trichloropropane 09/20/232.5 131 ug/Kg 478150SW8260B 19:50 HV ND4-Chlorotoluene 09/20/232.1 131 ug/Kg 478150SW8260B 19:50 HV NDtert-Butylbenzene 09/20/232.1 131 ug/Kg 478150SW8260B 19:50 HV ND1,2,4-Trimethylbenzene 09/20/231.8 131 ug/Kg 478150SW8260B 19:50 HV NDsec-Butyl Benzene 09/20/232.0 131 ug/Kg 478150SW8260B 19:50 HV NDp-Isopropyltoluene 09/20/231.9 131 ug/Kg 478150SW8260B 19:50 HV ND1,3-Dichlorobenzene 09/20/232.2 131 ug/Kg 478150SW8260B 19:50 HV ND1,4-Dichlorobenzene 09/20/232.2 131 ug/Kg 478150SW8260B 19:50 HV NDn-Butylbenzene 09/20/231.9 131 ug/Kg 478150SW8260B 19:50 HV ND1,2-Dichlorobenzene 09/20/232.3 131 ug/Kg 478150SW8260B 19:50 HV ND1,2-Dibromo-3-Chloropropane 09/20/232.4 131 ug/Kg 478150SW8260B 19:50 HV NDHexachlorobutadiene 09/20/231.8 131 ug/Kg 478150SW8260B 19:50 HV ND1,2,4-Trichlorobenzene 09/20/231.9 131 ug/Kg 478150SW8260B 19:50 HV NDNaphthalene 09/20/232.2 131 ug/Kg 478150SW8260B 19:50 HV ND1,2,3-Trichlorobenzene 09/20/232.2 131 ug/Kg 478150SW8260B 19:50 HV ND2-Butanone 09/20/233.0 13.01 ug/Kg 478150SW8260B 19:50 HV

80.3(S) Dibromofluoromethane 09/20/23% 478150SW8260B 19:50 HV59.8 - 148 105(S) Toluene-d8 09/20/23% 478150SW8260B 19:50 HV55 .2 - 133

99.3(S) 4-Bromofluorobenzene 09/20/23% 478150SW8260B 19:50 HV55.8 - 141

Page 27 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 15:45
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-3B-12'
SoilSample Matrix:

Lab Sample ID: 2309157-012A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDDichlorodifluoromethane 09/20/231.1 9.01 ug/Kg 478150SW8260B 20:20 HV NDChloromethane 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV NDVinyl Chloride 09/20/231.8 9.01 ug/Kg 478150SW8260B 20:20 HV NDBromomethane 09/20/232.4 9.01 ug/Kg 478150SW8260B 20:20 HV NDChloroethane 09/20/232.7 9.01 ug/Kg 478150SW8260B 20:20 HV NDTrichlorofluoromethane 09/20/231.9 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,1-Dichloroethene 09/20/231.8 9.01 ug/Kg 478150SW8260B 20:20 HV NDFreon 113 09/20/231.7 9.01 ug/Kg 478150SW8260B 20:20 HV NDMethylene Chloride 09/20/236.4 9.01 ug/Kg 478150SW8260B 20:20 HV NDtrans-1,2-Dichloroethene 09/20/231.9 9.01 ug/Kg 478150SW8260B 20:20 HV NDMTBE 09/20/232.1 9.01 ug/Kg 478150SW8260B 20:20 HV
NDTBA 09/20/2310 44.91 ug/Kg 478150SW8260B 20:20 HV
NDDiisopropyl ether 09/20/232.1 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,1-Dichloroethane 09/20/232.0 9.01 ug/Kg 478150SW8260B 20:20 HV NDEthyl tert-Butyl ether 09/20/232.1 9.01 ug/Kg 478150SW8260B 20:20 HV NDcis-1,2-Dichloroethene 09/20/232.0 9.01 ug/Kg 478150SW8260B 20:20 HV ND2,2-Dichloropropane 09/20/231.7 9.01 ug/Kg 478150SW8260B 20:20 HV NDBromochloromethane 09/20/232.1 9.01 ug/Kg 478150SW8260B 20:20 HV NDChloroform 09/20/232.1 9.01 ug/Kg 478150SW8260B 20:20 HV NDCarbon Tetrachloride 09/20/231.8 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,1,1-Trichloroethane 09/20/231.9 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,1-Dichloropropene 09/20/231.8 9.01 ug/Kg 478150SW8260B 20:20 HV NDBenzene 09/20/232.0 9.01 ug/Kg 478150SW8260B 20:20 HV NDTAME 09/20/232.0 9.01 ug/Kg 478150SW8260B 20:20 HV
ND1,2-Dichloroethane 09/20/232.1 9.01 ug/Kg 478150SW8260B 20:20 HV NDTrichloroethene 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV NDDibromomethane 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,2-Dichloropropane 09/20/231.7 9.01 ug/Kg 478150SW8260B 20:20 HV NDBromodichloromethane 09/20/231.8 9.01 ug/Kg 478150SW8260B 20 :20 HV NDcis-1,3-Dichloropropene 09/20/231.4 9.01 ug/Kg 478150SW8260B 20:20 HV NDToluene 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV NDTetrachloroethylene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV NDtrans-1,3-Dichloropropene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,1,2-Trichloroethane 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV NDDibromochloromethane 09/20/231.7 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,3-Dichloropropane 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,2-Dibromoethane 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV NDChlorobenzene 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV NDEthylbenzene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV

Page 28 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 15:45
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-3B-12'
SoilSample Matrix:

Lab Sample ID: 2309157-012A
SDG:

Prep Batch ID: 1154575
Prep Batch Date/Time: 9/20/23 10:18:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
ND1,1,1,2-Tetrachloroethane 09/20/231.7 9.01 ug/Kg 478150SW8260B 20:20 HV NDm,p-Xylene 09/20/232.8 9.01 ug/Kg 478150SW8260B 20:20 HV NDo-Xylene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV NDStyrene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV NDBromoform 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV NDIsopropyl Benzene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV NDn-Propylbenzene 09/20/231.4 9.01 ug/Kg 478150SW8260B 20:20 HV NDBromobenzene 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,1,2,2-Tetrachloroethane 09/20/231.7 9.01 ug/Kg 478150SW8260B 20:20 HV ND2-Chlorotoluene 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,3,5-Trimethylbenzene 09/20/231.4 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,2,3-Trichloropropane 09/20/231.7 9.01 ug/Kg 478150SW8260B 20:20 HV ND4-Chlorotoluene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV NDtert-Butylbenzene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,2,4-Trimethylbenzene 09/20/231.2 9.01 ug/Kg 478150SW8260B 20:20 HV NDsec-Butyl Benzene 09/20/231.4 9.01 ug/Kg 478150SW8260B 20:20 HV NDp-Isopropyltoluene 09/20/231.3 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,3-Dichlorobenzene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,4-Dichlorobenzene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV NDn-Butylbenzene 09/20/231.3 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,2-Dichlorobenzene 09/20/231.6 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,2-Dibromo-3-Chloropropane 09/20/231.7 9.01 ug/Kg 478150SW8260B 20:20 HV NDHexachlorobutadiene 09/20/231.2 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,2,4-Trichlorobenzene 09/20/231.3 9.01 ug/Kg 478150SW8260B 20:20 HV NDNaphthalene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV ND1,2,3-Trichlorobenzene 09/20/231.5 9.01 ug/Kg 478150SW8260B 20:20 HV ND2-Butanone 09/20/232.1 8.981 ug/Kg 478150SW8260B 20:20 HV

85.4(S) Dibromofluoromethane 09/20/23% 478150SW8260B 20:20 HV59.8 - 148 101(S) Toluene-d8 09/20/23% 478150SW8260B 20:20 HV55 .2 - 133

98.6(S) 4-Bromofluorobenzene 09/20/23% 478150SW8260B 20:20 HV55.8 - 141

Page 29 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 14:25
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-4-6'
SoilSample Matrix:

Lab Sample ID: 2309157-013A
SDG:

Prep Batch ID: 1154541
Prep Batch Date/Time: 9/20/23 12:41:00PM
Prep Analyst: NDUM
Prep Method: 3546_TPH
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
x2.66TPH as Diesel 09/21/230.66 2.01 mg/Kg 478245SW8015B 21:29 SN NDTPH as Motor Oil 09/21/230.76 5.01 mg/Kg 478245SW8015B 21:29 SN Acceptance Limits

75.3Pentacosane (S) 09/21/23% 478245SW8015B 21:29 SN45 - 130 NOTE: x- Chromatographic pattern does not resemble typical diesel reference standard; unknown organics within diesel range quantified as diesel.

Page 30 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 14:25
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-4-6'
SoilSample Matrix:

Lab Sample ID: 2309157-013A
SDG:

Prep Batch ID: 1154617
Prep Batch Date/Time: 9/21/23 10:45:00AM
Prep Analyst: HVYAS
Prep Method: 5035GRO
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDTPH as Gasoline 09/21/2343 1001 ug/Kg 478191SW8260B(TPH )
18:29 HV

58.5(S) 4-Bromofluorobenzene 09/21/23% 478191SW8260B(TPH )
18:29 HV43.9 - 127

Page 31 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 14:44
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-4-12'
SoilSample Matrix:

Lab Sample ID: 2309157-014A
SDG:

Prep Batch ID: 1154541
Prep Batch Date/Time: 9/20/23 12:41:00PM
Prep Analyst: NDUM
Prep Method: 3546_TPH
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
x5.53TPH as Diesel 09/21/230.66 2.01 mg/Kg 478245SW8015B 21:54 SN NDTPH as Motor Oil 09/21/230.76 5.01 mg/Kg 478245SW8015B 21:54 SN Acceptance Limits

92.0Pentacosane (S) 09/21/23% 478245SW8015B 21:54 SN45 - 130 NOTE: x- Chromatographic pattern does not resemble typical diesel reference standard; unknown organics within diesel range quantified as diesel.

Page 32 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 14:44
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-4-12'
SoilSample Matrix:

Lab Sample ID: 2309157-014A
SDG:

Prep Batch ID: 1154617
Prep Batch Date/Time: 9/21/23 10:45:00AM
Prep Analyst: HVYAS
Prep Method: 5035GRO
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDTPH as Gasoline 09/21/2343 1001 ug/Kg 478191SW8260B(TPH )
19:05 HV

61.2(S) 4-Bromofluorobenzene 09/21/23% 478191SW8260B(TPH )
19:05 HV43.9 - 127

Page 33 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 14:25
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-4-6'
SoilSample Matrix:

Lab Sample ID: 2309157-015A
SDG:

Prep Batch ID: 1154560
Prep Batch Date/Time: 9/20/23 10:31:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDDichlorodifluoromethane 09/20/231.4 111 ug/Kg 478130SW8260B 18:40 HV NDChloromethane 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV NDVinyl Chloride 09/20/232.3 111 ug/Kg 478130SW8260B 18:40 HV NDBromomethane 09/20/233.1 111 ug/Kg 478130SW8260B 18:40 HV NDChloroethane 09/20/233.5 111 ug/Kg 478130SW8260B 18:40 HV NDTrichlorofluoromethane 09/20/232.4 111 ug/Kg 478130SW8260B 18:40 HV ND1,1-Dichloroethene 09/20/232.3 111 ug/Kg 478130SW8260B 18:40 HV NDFreon 113 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV NDMethylene Chloride 09/20/238.1 111 ug/Kg 478130SW8260B 18:40 HV NDtrans-1,2-Dichloroethene 09/20/232.4 111 ug/Kg 478130SW8260B 18:40 HV NDMTBE 09/20/232.7 111 ug/Kg 478130SW8260B 18:40 HV
NDTBA 09/20/2313 57.21 ug/Kg 478130SW8260B 18:40 HV
NDDiisopropyl ether 09/20/232.6 111 ug/Kg 478130SW8260B 18:40 HV ND1,1-Dichloroethane 09/20/232.5 111 ug/Kg 478130SW8260B 18:40 HV NDEthyl tert-Butyl ether 09/20/232.6 111 ug/Kg 478130SW8260B 18:40 HV NDcis-1,2-Dichloroethene 09/20/232.5 111 ug/Kg 478130SW8260B 18:40 HV ND2,2-Dichloropropane 09/20/232.2 111 ug/Kg 478130SW8260B 18:40 HV NDBromochloromethane 09/20/232.7 111 ug/Kg 478130SW8260B 18:40 HV NDChloroform 09/20/232.7 111 ug/Kg 478130SW8260B 18:40 HV NDCarbon Tetrachloride 09/20/232.3 111 ug/Kg 478130SW8260B 18:40 HV ND1,1,1-Trichloroethane 09/20/232.4 111 ug/Kg 478130SW8260B 18:40 HV ND1,1-Dichloropropene 09/20/232.3 111 ug/Kg 478130SW8260B 18:40 HV NDBenzene 09/20/232.5 111 ug/Kg 478130SW8260B 18:40 HV NDTAME 09/20/232.6 111 ug/Kg 478130SW8260B 18:40 HV
ND1,2-Dichloroethane 09/20/232.7 111 ug/Kg 478130SW8260B 18:40 HV NDTrichloroethene 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV NDDibromomethane 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV ND1,2-Dichloropropane 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV NDBromodichloromethane 09/20/232.3 111 ug/Kg 478130SW8260B 18 :40 HV NDcis-1,3-Dichloropropene 09/20/231.8 111 ug/Kg 478130SW8260B 18:40 HV NDToluene 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV
NDTetrachloroethylene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV NDtrans-1,3-Dichloropropene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV ND1,1,2-Trichloroethane 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV NDDibromochloromethane 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV ND1,3-Dichloropropane 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV ND1,2-Dibromoethane 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV NDChlorobenzene 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV NDEthylbenzene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV

Page 34 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 14:25
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-4-6'
SoilSample Matrix:

Lab Sample ID: 2309157-015A
SDG:

Prep Batch ID: 1154560
Prep Batch Date/Time: 9/20/23 10:31:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
ND1,1,1,2-Tetrachloroethane 09/20/232.2 111 ug/Kg 478130SW8260B 18:40 HV NDm,p-Xylene 09/20/233.6 111 ug/Kg 478130SW8260B 18:40 HV NDo-Xylene 09/20/232.0 111 ug/Kg 478130SW8260B 18:40 HV NDStyrene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV NDBromoform 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV NDIsopropyl Benzene 09/20/231.8 111 ug/Kg 478130SW8260B 18:40 HV NDn-Propylbenzene 09/20/231.8 111 ug/Kg 478130SW8260B 18:40 HV NDBromobenzene 09/20/232.0 111 ug/Kg 478130SW8260B 18:40 HV ND1,1,2,2-Tetrachloroethane 09/20/232.2 111 ug/Kg 478130SW8260B 18:40 HV ND2-Chlorotoluene 09/20/232.0 111 ug/Kg 478130SW8260B 18:40 HV ND1,3,5-Trimethylbenzene 09/20/231.8 111 ug/Kg 478130SW8260B 18:40 HV ND1,2,3-Trichloropropane 09/20/232.2 111 ug/Kg 478130SW8260B 18:40 HV ND4-Chlorotoluene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV NDtert-Butylbenzene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV ND1,2,4-Trimethylbenzene 09/20/231.6 111 ug/Kg 478130SW8260B 18:40 HV NDsec-Butyl Benzene 09/20/231.8 111 ug/Kg 478130SW8260B 18:40 HV NDp-Isopropyltoluene 09/20/231.7 111 ug/Kg 478130SW8260B 18:40 HV ND1,3-Dichlorobenzene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV ND1,4-Dichlorobenzene 09/20/232.0 111 ug/Kg 478130SW8260B 18:40 HV NDn-Butylbenzene 09/20/231.7 111 ug/Kg 478130SW8260B 18:40 HV ND1,2-Dichlorobenzene 09/20/232.0 111 ug/Kg 478130SW8260B 18:40 HV ND1,2-Dibromo-3-Chloropropane 09/20/232.1 111 ug/Kg 478130SW8260B 18:40 HV NDHexachlorobutadiene 09/20/231.6 111 ug/Kg 478130SW8260B 18:40 HV ND1,2,4-Trichlorobenzene 09/20/231.7 111 ug/Kg 478130SW8260B 18:40 HV NDNaphthalene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV ND1,2,3-Trichlorobenzene 09/20/231.9 111 ug/Kg 478130SW8260B 18:40 HV ND2-Butanone 09/20/232.6 11.41 ug/Kg 478130SW8260B 18:40 HV 115(S) Dibromofluoromethane 09/20/23% 478130SW8260B 18:40 HV59.8 - 148 108(S) Toluene-d8 09/20/23% 478130SW8260B 18:40 HV55 .2 - 133

99.1(S) 4-Bromofluorobenzene 09/20/23% 478130SW8260B 18:40 HV55.8 - 141

Page 35 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 14:44
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-4-12'
SoilSample Matrix:

Lab Sample ID: 2309157-016A
SDG:

Prep Batch ID: 1154560
Prep Batch Date/Time: 9/20/23 10:31:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDDichlorodifluoromethane 09/20/231.7 141 ug/Kg 478130SW8260B 19:15 HV NDChloromethane 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV NDVinyl Chloride 09/20/232.9 141 ug/Kg 478130SW8260B 19:15 HV NDBromomethane 09/20/233.8 141 ug/Kg 478130SW8260B 19:15 HV NDChloroethane 09/20/234.3 141 ug/Kg 478130SW8260B 19:15 HV NDTrichlorofluoromethane 09/20/232.9 141 ug/Kg 478130SW8260B 19:15 HV ND1,1-Dichloroethene 09/20/232.9 141 ug/Kg 478130SW8260B 19:15 HV NDFreon 113 09/20/232.7 141 ug/Kg 478130SW8260B 19:15 HV NDMethylene Chloride 09/20/2310 141 ug/Kg 478130SW8260B 19:15 HV NDtrans-1,2-Dichloroethene 09/20/233.0 141 ug/Kg 478130SW8260B 19:15 HV NDMTBE 09/20/233.3 141 ug/Kg 478130SW8260B 19:15 HV
NDTBA 09/20/2316 71.01 ug/Kg 478130SW8260B 19:15 HV
NDDiisopropyl ether 09/20/233.2 141 ug/Kg 478130SW8260B 19:15 HV ND1,1-Dichloroethane 09/20/233.1 141 ug/Kg 478130SW8260B 19:15 HV NDEthyl tert-Butyl ether 09/20/233.2 141 ug/Kg 478130SW8260B 19:15 HV NDcis-1,2-Dichloroethene 09/20/233.2 141 ug/Kg 478130SW8260B 19:15 HV ND2,2-Dichloropropane 09/20/232.7 141 ug/Kg 478130SW8260B 19:15 HV NDBromochloromethane 09/20/233.3 141 ug/Kg 478130SW8260B 19:15 HV NDChloroform 09/20/233.4 141 ug/Kg 478130SW8260B 19:15 HV NDCarbon Tetrachloride 09/20/232.9 141 ug/Kg 478130SW8260B 19:15 HV ND1,1,1-Trichloroethane 09/20/233.0 141 ug/Kg 478130SW8260B 19:15 HV ND1,1-Dichloropropene 09/20/232.8 141 ug/Kg 478130SW8260B 19:15 HV NDBenzene 09/20/233.2 141 ug/Kg 478130SW8260B 19:15 HV NDTAME 09/20/233.2 141 ug/Kg 478130SW8260B 19:15 HV
ND1,2-Dichloroethane 09/20/233.3 141 ug/Kg 478130SW8260B 19:15 HV NDTrichloroethene 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV NDDibromomethane 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV ND1,2-Dichloropropane 09/20/232.7 141 ug/Kg 478130SW8260B 19:15 HV NDBromodichloromethane 09/20/232.8 141 ug/Kg 478130SW8260B 19 :15 HV NDcis-1,3-Dichloropropene 09/20/232.3 141 ug/Kg 478130SW8260B 19:15 HV NDToluene 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV
NDTetrachloroethylene 09/20/232.4 141 ug/Kg 478130SW8260B 19:15 HV NDtrans-1,3-Dichloropropene 09/20/232.3 141 ug/Kg 478130SW8260B 19:15 HV ND1,1,2-Trichloroethane 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV NDDibromochloromethane 09/20/232.7 141 ug/Kg 478130SW8260B 19:15 HV ND1,3-Dichloropropane 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV ND1,2-Dibromoethane 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV NDChlorobenzene 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV NDEthylbenzene 09/20/232.3 141 ug/Kg 478130SW8260B 19:15 HV

Page 36 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 14:44
482220
10857; -67; -77; and -87 Linda Vista Drive
TSB-4-12'
SoilSample Matrix:

Lab Sample ID: 2309157-016A
SDG:

Prep Batch ID: 1154560
Prep Batch Date/Time: 9/20/23 10:31:00AM
Prep Analyst: HVYAS
Prep Method: 5035
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
ND1,1,1,2-Tetrachloroethane 09/20/232.7 141 ug/Kg 478130SW8260B 19:15 HV NDm,p-Xylene 09/20/234.5 141 ug/Kg 478130SW8260B 19:15 HV NDo-Xylene 09/20/232.5 141 ug/Kg 478130SW8260B 19:15 HV NDStyrene 09/20/232.3 141 ug/Kg 478130SW8260B 19:15 HV NDBromoform 09/20/232.4 141 ug/Kg 478130SW8260B 19:15 HV NDIsopropyl Benzene 09/20/232.3 141 ug/Kg 478130SW8260B 19:15 HV NDn-Propylbenzene 09/20/232.2 141 ug/Kg 478130SW8260B 19:15 HV NDBromobenzene 09/20/232.5 141 ug/Kg 478130SW8260B 19:15 HV ND1,1,2,2-Tetrachloroethane 09/20/232.7 141 ug/Kg 478130SW8260B 19:15 HV ND2-Chlorotoluene 09/20/232.5 141 ug/Kg 478130SW8260B 19:15 HV ND1,3,5-Trimethylbenzene 09/20/232.2 141 ug/Kg 478130SW8260B 19:15 HV ND1,2,3-Trichloropropane 09/20/232.7 141 ug/Kg 478130SW8260B 19:15 HV ND4-Chlorotoluene 09/20/232.3 141 ug/Kg 478130SW8260B 19:15 HV NDtert-Butylbenzene 09/20/232.3 141 ug/Kg 478130SW8260B 19:15 HV ND1,2,4-Trimethylbenzene 09/20/231.9 141 ug/Kg 478130SW8260B 19:15 HV NDsec-Butyl Benzene 09/20/232.2 141 ug/Kg 478130SW8260B 19:15 HV NDp-Isopropyltoluene 09/20/232.1 141 ug/Kg 478130SW8260B 19:15 HV ND1,3-Dichlorobenzene 09/20/232.4 141 ug/Kg 478130SW8260B 19:15 HV ND1,4-Dichlorobenzene 09/20/232.4 141 ug/Kg 478130SW8260B 19:15 HV NDn-Butylbenzene 09/20/232.1 141 ug/Kg 478130SW8260B 19:15 HV ND1,2-Dichlorobenzene 09/20/232.5 141 ug/Kg 478130SW8260B 19:15 HV ND1,2-Dibromo-3-Chloropropane 09/20/232.6 141 ug/Kg 478130SW8260B 19:15 HV NDHexachlorobutadiene 09/20/231.9 141 ug/Kg 478130SW8260B 19:15 HV ND1,2,4-Trichlorobenzene 09/20/232.1 141 ug/Kg 478130SW8260B 19:15 HV NDNaphthalene 09/20/232.4 141 ug/Kg 478130SW8260B 19:15 HV ND1,2,3-Trichlorobenzene 09/20/232.4 141 ug/Kg 478130SW8260B 19:15 HV ND2-Butanone 09/20/233.2 14.21 ug/Kg 478130SW8260B 19:15 HV 114(S) Dibromofluoromethane 09/20/23% 478130SW8260B 19:15 HV59.8 - 148 107(S) Toluene-d8 09/20/23% 478130SW8260B 19:15 HV55 .2 - 133

97.9(S) 4-Bromofluorobenzene 09/20/23% 478130SW8260B 19:15 HV55.8 - 141

Page 37 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:13
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-5-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-017A
SDG:

Prep Batch ID: 1154583
Prep Batch Date/Time: 9/21/23 12:25:00PM
Prep Analyst: KEYO
Prep Method: 3050B
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By

2.75Arsenic 09/21/230.15 1.31 mg/Kg 478197SW6010B 18:36 PH

6.85Lead 09/21/230.12 3.01 mg/Kg 478197SW6010B 18:36 PH

Page 38 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:13
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-5-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-017A
SDG:

Prep Batch ID: 1154548
Prep Batch Date/Time: 9/20/23 2:48:00PM
Prep Analyst: AKIZ
Prep Method: 3546_OCP
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDalpha-BHC 09/21/230.25 2.01 ug/Kg 478246SW8081B 23:51 MK NDgamma-BHC (Lindane) 09/21/230.71 2.01 ug/Kg 478246SW8081B 23:51 MK NDbeta-BHC 09/21/230.44 2.01 ug/Kg 478246SW8081B 23:51 MK NDdelta-BHC 09/21/230.65 2.01 ug/Kg 478246SW8081B 23:51 MK NDHeptachlor 09/21/230.27 2.01 ug/Kg 478246SW8081B 23:51 MK NDAldrin 09/21/230.29 2.01 ug/Kg 478246SW8081B 23:51 MK NDHeptachlor Epoxide 09/21/230.31 2.01 ug/Kg 478246SW8081B 23:51 MK NDgamma-Chlordane 09/21/231.5 3.01 ug/Kg 478246SW8081B 23:51 MK NDalpha-Chlordane 09/21/230.36 2.01 ug/Kg 478246SW8081B 23:51 MK

6.454,4'-DDE 09/21/230.61 2.01 ug/Kg 478246SW8081B 23:51 MK NDEndosulfan I 09/21/230.29 2.01 ug/Kg 478246SW8081B 23:51 MK NDDieldrin 09/21/230.25 2.01 ug/Kg 478246SW8081B 23:51 MK NDEndrin 09/21/230.79 2.01 ug/Kg 478246SW8081B 23:51 MK ND4,4'-DDD 09/21/230.64 2.01 ug/Kg 478246SW8081B 23:51 MK NDEndosulfan II 09/21/230.34 2.01 ug/Kg 478246SW8081B 23:51 MK

5.634,4'-DDT 09/21/230.74 2.01 ug/Kg 478246SW8081B 23:51 MK NDEndrin Aldehyde 09/21/230.51 2.01 ug/Kg 478246SW8081B 23:51 MK NDMethoxychlor 09/21/232.6 6.01 ug/Kg 478246SW8081B 23:51 MK NDEndosulfan Sulfate 09/21/230.51 2.01 ug/Kg 478246SW8081B 23:51 MK NDEndrin Ketone 09/21/230.43 2.01 ug/Kg 478246SW8081B 23 :51 MK NDChlordane, Technical 09/21/232.7 201 ug/Kg 478246SW8081B 23:51 MK NDToxaphene 09/21/2322 501 ug/Kg 478246SW8081B 23:51 MK Acceptance Limits

86.8Tetrachloro-M-Xylene (S) 09/21/23% 478246SW8081B 23:51 MK48 - 125

86.8Decachlorobiphenyl (S) 09/21/23% 478246SW8081B 23:51 MK38 - 135

Page 39 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 13:12
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-6-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-018A
SDG:

Prep Batch ID: 1154583
Prep Batch Date/Time: 9/21/23 12:25:00PM
Prep Analyst: KEYO
Prep Method: 3050B
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By

3.55Arsenic 09/21/230.15 1.31 mg/Kg 478197SW6010B 18:41 PH

10.2Lead 09/21/230.12 3.01 mg/Kg 478197SW6010B 18:41 PH

Page 40 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 13:12
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-6-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-018A
SDG:

Prep Batch ID: 1154548
Prep Batch Date/Time: 9/20/23 2:48:00PM
Prep Analyst: AKIZ
Prep Method: 3546_OCP
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDalpha-BHC 09/22/230.25 2.01 ug/Kg 478246SW8081B 0:04 MK NDgamma-BHC (Lindane) 09/22/230.71 2.01 ug/Kg 478246SW8081B 0:04 MK NDbeta-BHC 09/22/230.44 2.01 ug/Kg 478246SW8081B 0:04 MK NDdelta-BHC 09/22/230.65 2.01 ug/Kg 478246SW8081B 0:04 MK NDHeptachlor 09/22/230.27 2.01 ug/Kg 478246SW8081B 0:04 MK NDAldrin 09/22/230.29 2.01 ug/Kg 478246SW8081B 0:04 MK NDHeptachlor Epoxide 09/22/230.31 2.01 ug/Kg 478246SW8081B 0:04 MK NDgamma-Chlordane 09/22/231.5 3.01 ug/Kg 478246SW8081B 0:04 MK NDalpha-Chlordane 09/22/230.36 2.01 ug/Kg 478246SW8081B 0:04 MK ND4,4'-DDE 09/22/230.61 2.01 ug/Kg 478246SW8081B 0:04 MK NDEndosulfan I 09/22/230.29 2.01 ug/Kg 478246SW8081B 0:04 MK NDDieldrin 09/22/230.25 2.01 ug/Kg 478246SW8081B 0:04 MK NDEndrin 09/22/230.79 2.01 ug/Kg 478246SW8081B 0:04 MK ND4,4'-DDD 09/22/230.64 2.01 ug/Kg 478246SW8081B 0:04 MK NDEndosulfan II 09/22/230.34 2.01 ug/Kg 478246SW8081B 0:04 MK ND4,4'-DDT 09/22/230.74 2.01 ug/Kg 478246SW8081B 0:04 MK NDEndrin Aldehyde 09/22/230.51 2.01 ug/Kg 478246SW8081B 0:04 MK NDMethoxychlor 09/22/232.6 6.01 ug/Kg 478246SW8081B 0:04 MK NDEndosulfan Sulfate 09/22/230.51 2.01 ug/Kg 478246SW8081B 0:04 MK NDEndrin Ketone 09/22/230.43 2.01 ug/Kg 478246SW8081B 0: 04 MK NDChlordane, Technical 09/22/232.7 201 ug/Kg 478246SW8081B 0:04 MK NDToxaphene 09/22/2322 501 ug/Kg 478246SW8081B 0:04 MK Acceptance Limits

83.8Tetrachloro-M-Xylene (S) 09/22/23% 478246SW8081B 0:04 MK48 - 125

76.9Decachlorobiphenyl (S) 09/22/23% 478246SW8081B 0:04 MK38 - 135

Page 41 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:03
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-7-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-019A
SDG:

Prep Batch ID: 1154583
Prep Batch Date/Time: 9/21/23 12:25:00PM
Prep Analyst: KEYO
Prep Method: 3050B
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By

3.16Arsenic 09/21/230.15 1.31 mg/Kg 478197SW6010B 18:43 PH

7.05Lead 09/21/230.12 3.01 mg/Kg 478197SW6010B 18:43 PH

Page 42 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:03
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-7-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-019A
SDG:

Prep Batch ID: 1154548
Prep Batch Date/Time: 9/20/23 2:48:00PM
Prep Analyst: AKIZ
Prep Method: 3546_OCP
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDalpha-BHC 09/22/230.25 2.01 ug/Kg 478246SW8081B 0:17 MK NDgamma-BHC (Lindane) 09/22/230.71 2.01 ug/Kg 478246SW8081B 0:17 MK NDbeta-BHC 09/22/230.44 2.01 ug/Kg 478246SW8081B 0:17 MK NDdelta-BHC 09/22/230.65 2.01 ug/Kg 478246SW8081B 0:17 MK NDHeptachlor 09/22/230.27 2.01 ug/Kg 478246SW8081B 0:17 MK NDAldrin 09/22/230.29 2.01 ug/Kg 478246SW8081B 0:17 MK NDHeptachlor Epoxide 09/22/230.31 2.01 ug/Kg 478246SW8081B 0:17 MK NDgamma-Chlordane 09/22/231.5 3.01 ug/Kg 478246SW8081B 0:17 MK NDalpha-Chlordane 09/22/230.36 2.01 ug/Kg 478246SW8081B 0:17 MK ND4,4'-DDE 09/22/230.61 2.01 ug/Kg 478246SW8081B 0:17 MK NDEndosulfan I 09/22/230.29 2.01 ug/Kg 478246SW8081B 0:17 MK NDDieldrin 09/22/230.25 2.01 ug/Kg 478246SW8081B 0:17 MK NDEndrin 09/22/230.79 2.01 ug/Kg 478246SW8081B 0:17 MK ND4,4'-DDD 09/22/230.64 2.01 ug/Kg 478246SW8081B 0:17 MK NDEndosulfan II 09/22/230.34 2.01 ug/Kg 478246SW8081B 0:17 MK ND4,4'-DDT 09/22/230.74 2.01 ug/Kg 478246SW8081B 0:17 MK NDEndrin Aldehyde 09/22/230.51 2.01 ug/Kg 478246SW8081B 0:17 MK NDMethoxychlor 09/22/232.6 6.01 ug/Kg 478246SW8081B 0:17 MK NDEndosulfan Sulfate 09/22/230.51 2.01 ug/Kg 478246SW8081B 0:17 MK NDEndrin Ketone 09/22/230.43 2.01 ug/Kg 478246SW8081B 0: 17 MK NDChlordane, Technical 09/22/232.7 201 ug/Kg 478246SW8081B 0:17 MK NDToxaphene 09/22/2322 501 ug/Kg 478246SW8081B 0:17 MK Acceptance Limits

83.5Tetrachloro-M-Xylene (S) 09/22/23% 478246SW8081B 0:17 MK48 - 125

76.3Decachlorobiphenyl (S) 09/22/23% 478246SW8081B 0:17 MK38 - 135

Page 43 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:31
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-8-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-020A
SDG:

Prep Batch ID: 1154583
Prep Batch Date/Time: 9/21/23 12:25:00PM
Prep Analyst: KEYO
Prep Method: 3050B
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By

2.89Arsenic 09/21/230.15 1.31 mg/Kg 478197SW6010B 18:44 PH

10.5Lead 09/21/230.12 3.01 mg/Kg 478197SW6010B 18:44 PH

Page 44 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:31
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-8-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-020A
SDG:

Prep Batch ID: 1154548
Prep Batch Date/Time: 9/20/23 2:48:00PM
Prep Analyst: AKIZ
Prep Method: 3546_OCP
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDalpha-BHC 09/22/230.25 2.01 ug/Kg 478246SW8081B 0:30 MK NDgamma-BHC (Lindane) 09/22/230.71 2.01 ug/Kg 478246SW8081B 0:30 MK NDbeta-BHC 09/22/230.44 2.01 ug/Kg 478246SW8081B 0:30 MK NDdelta-BHC 09/22/230.65 2.01 ug/Kg 478246SW8081B 0:30 MK NDHeptachlor 09/22/230.27 2.01 ug/Kg 478246SW8081B 0:30 MK NDAldrin 09/22/230.29 2.01 ug/Kg 478246SW8081B 0:30 MK NDHeptachlor Epoxide 09/22/230.31 2.01 ug/Kg 478246SW8081B 0:30 MK NDgamma-Chlordane 09/22/231.5 3.01 ug/Kg 478246SW8081B 0:30 MK NDalpha-Chlordane 09/22/230.36 2.01 ug/Kg 478246SW8081B 0:30 MK ND4,4'-DDE 09/22/230.61 2.01 ug/Kg 478246SW8081B 0:30 MK NDEndosulfan I 09/22/230.29 2.01 ug/Kg 478246SW8081B 0:30 MK NDDieldrin 09/22/230.25 2.01 ug/Kg 478246SW8081B 0:30 MK NDEndrin 09/22/230.79 2.01 ug/Kg 478246SW8081B 0:30 MK ND4,4'-DDD 09/22/230.64 2.01 ug/Kg 478246SW8081B 0:30 MK NDEndosulfan II 09/22/230.34 2.01 ug/Kg 478246SW8081B 0:30 MK ND4,4'-DDT 09/22/230.74 2.01 ug/Kg 478246SW8081B 0:30 MK NDEndrin Aldehyde 09/22/230.51 2.01 ug/Kg 478246SW8081B 0:30 MK NDMethoxychlor 09/22/232.6 6.01 ug/Kg 478246SW8081B 0:30 MK NDEndosulfan Sulfate 09/22/230.51 2.01 ug/Kg 478246SW8081B 0:30 MK NDEndrin Ketone 09/22/230.43 2.01 ug/Kg 478246SW8081B 0: 30 MK NDChlordane, Technical 09/22/232.7 201 ug/Kg 478246SW8081B 0:30 MK NDToxaphene 09/22/2322 501 ug/Kg 478246SW8081B 0:30 MK Acceptance Limits

91.9Tetrachloro-M-Xylene (S) 09/22/23% 478246SW8081B 0:30 MK48 - 125

84.2Decachlorobiphenyl (S) 09/22/23% 478246SW8081B 0:30 MK38 - 135

Page 45 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:38
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-9-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-021A
SDG:

Prep Batch ID: 1154583
Prep Batch Date/Time: 9/21/23 12:25:00PM
Prep Analyst: KEYO
Prep Method: 3050B
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By

2.58Arsenic 09/21/230.15 1.31 mg/Kg 478197SW6010B 18:46 PH

7.40Lead 09/21/230.12 3.01 mg/Kg 478197SW6010B 18:46 PH

Page 46 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:38
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-9-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-021A
SDG:

Prep Batch ID: 1154548
Prep Batch Date/Time: 9/20/23 2:48:00PM
Prep Analyst: AKIZ
Prep Method: 3546_OCP
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDalpha-BHC 09/22/230.25 2.01 ug/Kg 478246SW8081B 0:43 MK NDgamma-BHC (Lindane) 09/22/230.71 2.01 ug/Kg 478246SW8081B 0:43 MK NDbeta-BHC 09/22/230.44 2.01 ug/Kg 478246SW8081B 0:43 MK NDdelta-BHC 09/22/230.65 2.01 ug/Kg 478246SW8081B 0:43 MK NDHeptachlor 09/22/230.27 2.01 ug/Kg 478246SW8081B 0:43 MK NDAldrin 09/22/230.29 2.01 ug/Kg 478246SW8081B 0:43 MK NDHeptachlor Epoxide 09/22/230.31 2.01 ug/Kg 478246SW8081B 0:43 MK NDgamma-Chlordane 09/22/231.5 3.01 ug/Kg 478246SW8081B 0:43 MK NDalpha-Chlordane 09/22/230.36 2.01 ug/Kg 478246SW8081B 0:43 MK ND4,4'-DDE 09/22/230.61 2.01 ug/Kg 478246SW8081B 0:43 MK NDEndosulfan I 09/22/230.29 2.01 ug/Kg 478246SW8081B 0:43 MK NDDieldrin 09/22/230.25 2.01 ug/Kg 478246SW8081B 0:43 MK NDEndrin 09/22/230.79 2.01 ug/Kg 478246SW8081B 0:43 MK ND4,4'-DDD 09/22/230.64 2.01 ug/Kg 478246SW8081B 0:43 MK NDEndosulfan II 09/22/230.34 2.01 ug/Kg 478246SW8081B 0:43 MK ND4,4'-DDT 09/22/230.74 2.01 ug/Kg 478246SW8081B 0:43 MK NDEndrin Aldehyde 09/22/230.51 2.01 ug/Kg 478246SW8081B 0:43 MK NDMethoxychlor 09/22/232.6 6.01 ug/Kg 478246SW8081B 0:43 MK NDEndosulfan Sulfate 09/22/230.51 2.01 ug/Kg 478246SW8081B 0:43 MK NDEndrin Ketone 09/22/230.43 2.01 ug/Kg 478246SW8081B 0: 43 MK NDChlordane, Technical 09/22/232.7 201 ug/Kg 478246SW8081B 0:43 MK NDToxaphene 09/22/2322 501 ug/Kg 478246SW8081B 0:43 MK Acceptance Limits

84.3Tetrachloro-M-Xylene (S) 09/22/23% 478246SW8081B 0:43 MK48 - 125

78.0Decachlorobiphenyl (S) 09/22/23% 478246SW8081B 0:43 MK38 - 135

Page 47 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:47
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-10-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-022A
SDG:

Prep Batch ID: 1154583
Prep Batch Date/Time: 9/21/23 12:25:00PM
Prep Analyst: KEYO
Prep Method: 3050B
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By

3.19Arsenic 09/21/230.15 1.31 mg/Kg 478197SW6010B 18:51 PH

8.25Lead 09/21/230.12 3.01 mg/Kg 478197SW6010B 18:51 PH

Page 48 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:47
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-10-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-022A
SDG:

Prep Batch ID: 1154548
Prep Batch Date/Time: 9/20/23 2:48:00PM
Prep Analyst: AKIZ
Prep Method: 3546_OCP
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
The results shown below are reported using their MDL.

NDalpha-BHC 09/22/230.75 6.03 ug/Kg 478246SW8081B 0:56 MK NDgamma-BHC (Lindane) 09/22/232.1 6.03 ug/Kg 478246SW8081B 0:56 MK NDbeta-BHC 09/22/231.3 6.03 ug/Kg 478246SW8081B 0:56 MK NDdelta-BHC 09/22/231.9 6.03 ug/Kg 478246SW8081B 0:56 MK NDHeptachlor 09/22/230.80 6.03 ug/Kg 478246SW8081B 0:56 MK NDAldrin 09/22/230.88 6.03 ug/Kg 478246SW8081B 0:56 MK NDHeptachlor Epoxide 09/22/230.92 6.03 ug/Kg 478246SW8081B 0:56 MK NDgamma-Chlordane 09/22/234.4 9.03 ug/Kg 478246SW8081B 0:56 MK NDalpha-Chlordane 09/22/231.1 6.03 ug/Kg 478246SW8081B 0:56 MK

27.84,4'-DDE 09/22/231.8 6.03 ug/Kg 478246SW8081B 0:56 MK NDEndosulfan I 09/22/230.86 6.03 ug/Kg 478246SW8081B 0:56 MK J1.29Dieldrin 09/22/230.74 6.03 ug/Kg 478246SW8081B 0:56 MK NDEndrin 09/22/232.4 6.03 ug/Kg 478246SW8081B 0:56 MK
J2.404,4'-DDD 09/22/231.9 6.03 ug/Kg 478246SW8081B 0:56 MK NDEndosulfan II 09/22/231.0 6.03 ug/Kg 478246SW8081B 0:56 MK

10.74,4'-DDT 09/22/232.2 6.03 ug/Kg 478246SW8081B 0:56 MK NDEndrin Aldehyde 09/22/231.5 6.03 ug/Kg 478246SW8081B 0:56 MK NDMethoxychlor 09/22/237.7 183 ug/Kg 478246SW8081B 0:56 MK NDEndosulfan Sulfate 09/22/231.5 6.03 ug/Kg 478246SW8081B 0:56 MK NDEndrin Ketone 09/22/231.3 6.03 ug/Kg 478246SW8081B 0:56 MK NDChlordane, Technical 09/22/238.0 603 ug/Kg 478246SW8081B 0:56 MK NDToxaphene 09/22/2367 1503 ug/Kg 478246SW8081B 0:56 MK Acceptance Limits

89.9Tetrachloro-M-Xylene (S) 09/22/23% 478246SW8081B 0:56 MK48 - 125

91.3Decachlorobiphenyl (S) 09/22/23% 478246SW8081B 0:56 MK38 - 135 NOTE: Sample diluted due to the nature of the sample matrix (dark colored extract)

Page 49 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:55
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-11-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-023A
SDG:

Prep Batch ID: 1154583
Prep Batch Date/Time: 9/21/23 12:25:00PM
Prep Analyst: KEYO
Prep Method: 3050B
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By

2.67Arsenic 09/21/230.15 1.31 mg/Kg 478197SW6010B 18:53 PH

8.55Lead 09/21/230.12 3.01 mg/Kg 478197SW6010B 18:53 PH

Page 50 of 71 ends

SAMPLE RESULTS
Report prepared for:

Date Reported: 09/26/23
Date/Time Received: 09/19/23, 5:48 pm
AEI Consultants
Jeremy Smith
Client Sample ID:

Date/Time Sampled:

Project Number:

Project Name/Location:
09/19/23 / 12:55
482220
10857; -67; -77; and -87 Linda Vista Drive
SB-11-1.5'
SoilSample Matrix:

Lab Sample ID: 2309157-023A
SDG:

Prep Batch ID: 1154548
Prep Batch Date/Time: 9/20/23 2:48:00PM
Prep Analyst: AKIZ
Prep Method: 3546_OCP
Parameters:

Analytical
BatchUnitsQ
ResultsPQLMDLDF
Analyzed
Analysis
Method Time By
NDalpha-BHC 09/22/230.25 2.01 ug/Kg 478246SW8081B 1:09 MK NDgamma-BHC (Lindane) 09/22/230.71 2.01 ug/Kg 478246SW8081B 1:09 MK NDbeta-BHC 09/22/230.44 2.01 ug/Kg 478246SW8081B 1:09 MK NDdelta-BHC 09/22/230.65 2.01 ug/Kg 478246SW8081B 1:09 MK NDHeptachlor 09/22/230.27 2.01 ug/Kg 478246SW8081B 1:09 MK NDAldrin 09/22/230.29 2.01 ug/Kg 478246SW8081B 1:09 MK NDHeptachlor Epoxide 09/22/230.31 2.01 ug/Kg 478246SW8081B 1:09 MK NDgamma-Chlordane 09/22/231.5 3.01 ug/Kg 478246SW8081B 1:09 MK NDalpha-Chlordane 09/22/230.36 2.01 ug/Kg 478246SW8081B 1:09 MK

4.694,4'-DDE 09/22/230.61 2.01 ug/Kg 478246SW8081B 1:09 MK NDEndosulfan I 09/22/230.29 2.01 ug/Kg 478246SW8081B 1:09 MK NDDieldrin 09/22/230.25 2.01 ug/Kg 478246SW8081B 1:09 MK NDEndrin 09/22/230.79 2.01 ug/Kg 478246SW8081B 1:09 MK ND4,4'-DDD 09/22/230.64 2.01 ug/Kg 478246SW8081B 1:09 MK NDEndosulfan II 09/22/230.34 2.01 ug/Kg 478246SW8081B 1:09 MK

2.724,4'-DDT 09/22/230.74 2.01 ug/Kg 478246SW8081B 1:09 MK NDEndrin Aldehyde 09/22/230.51 2.01 ug/Kg 478246SW8081B 1:09 MK NDMethoxychlor 09/22/232.6 6.01 ug/Kg 478246SW8081B 1:09 MK NDEndosulfan Sulfate 09/22/230.51 2.01 ug/Kg 478246SW8081B 1:09 MK NDEndrin Ketone 09/22/230.43 2.01 ug/Kg 478246SW8081B 1: 09 MK NDChlordane, Technical 09/22/232.7 201 ug/Kg 478246SW8081B 1:09 MK NDToxaphene 09/22/2322 501 ug/Kg 478246SW8081B 1:09 MK Acceptance Limits

76.5Tetrachloro-M-Xylene (S) 09/22/23% 478246SW8081B 1:09 MK48 - 125

71.2Decachlorobiphenyl (S) 09/22/23% 478246SW8081B 1:09 MK38 - 135

Page 51 of 71 ends

MB Summary Report
Work Order:

Matrix:

Units:

Prep Method:

SW8015BAnalytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
mg/Kg
11545413546_TPH
Soil 478162
2309157
9/21/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier

0.85 2.0TPH as Diesel 0.860

3.2 10TPH as Motor Oil ND
Pentacosane (S) 85.3
Work Order:

Matrix:

Units:

Prep Method:

SW8081B
Analytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
ug/Kg
11545483546_OCP
Soil 478145
2309157
9/20/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier

0.25 2.0alpha-BHC ND

0.71 2.0gamma-BHC (Lindane) ND

0.44 2.0beta-BHC ND

0.65 2.0delta-BHC ND

0.27 2.0Heptachlor ND

0.29 2.0Aldrin ND

0.31 2.0Heptachlor Epoxide ND

1.5 3.0gamma-Chlordane ND

0.36 2.0alpha-Chlordane ND

0.61 2.04,4'-DDE ND

0.29 2.0Endosulfan I ND

0.25 2.0Dieldrin ND

0.79 2.0Endrin ND

0.64 2.04,4'-DDD ND

0.34 2.0Endosulfan II ND

0.74 2.04,4'-DDT ND

0.51 2.0Endrin Aldehyde ND

2.6 6.0Methoxychlor ND

0.51 2.0Endosulfan Sulfate ND

0.43 2.0Endrin Ketone ND

2.7 20Chlordane, Technical ND
22 50Toxaphene ND
Tetrachloro-M-Xylene (S) 90.2
Decachlorobiphenyl (S) 70.3

Page 52 of 71 ends

MB Summary Report
Work Order:

Matrix:

Units:

Prep Method:

SW8260BAnalytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
ug/Kg
11545605035
Soil 478130
2309157
9/20/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier

1.2 10Dichlorodifluoromethane ND

1.8 10Chloromethane ND

2.0 10Vinyl Chloride ND

2.7 10Bromomethane ND

3.0 10Chloroethane ND

2.1 10Trichlorofluoromethane ND

2.0 101,1-Dichloroethene ND

1.9 10Freon 113 ND

7.1 10Methylene Chloride ND

2.1 10trans-1,2-Dichloroethene ND

2.3 10MTBE ND
12 50TBA ND

2.3 10Diisopropyl ether ND

2.2 101,1-Dichloroethane ND

2.3 10Ethyl tert-Butyl ether ND

2.2 10cis-1,2-Dichloroethene ND

1.9 102,2-Dichloropropane ND

2.3 10Bromochloromethane ND

2.4 10Chloroform ND

2.1 10Carbon Tetrachloride ND

2.1 101,1,1-Trichloroethane ND

2.0 101,1-Dichloropropene ND

2.2 10Benzene ND

2.3 10TAME ND

2.3 101,2-Dichloroethane ND

1.8 10Trichloroethene ND

1.8 10Dibromomethane ND

1.9 101,2-Dichloropropane ND

2.0 10Bromodichloromethane ND

1.6 10cis-1,3-Dichloropropene ND

1.8 10Toluene ND

1.7 10Tetrachloroethene ND

1.6 10trans-1,3-Dichloropropene ND

1.8 101,1,2-Trichloroethane ND

1.9 10Dibromochloromethane ND

1.8 101,3-Dichloropropane ND

1.8 101,2-Dibromoethane ND

1.8 10Chlorobenzene ND

1.7 10Ethylbenzene ND

1.9 101,1,1,2-Tetrachloroethane ND

3.2 10m,p-Xylene ND

1.7 10o-Xylene ND

1.6 10Styrene ND

1. 7 10Bromoform ND

1.6 10Isopropyl Benzene ND

Page 53 of 71 ends

MB Summary Report
Work Order:

Matrix:

Units:

Prep Method:

SW8260BAnalytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
ug/Kg
11545605035
Soil 478130
2309157
9/20/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier

1.6 10n-Propylbenzene ND

1.8 10Bromobenzene ND

1.9 101,1,2,2-Tetrachloroethane ND

1.8 102-Chlorotoluene ND

1.6 101,3,5-Trimethylbenzene ND

1.9 101,2,3-Trichloropropane ND

1.6 104-Chlorotoluene ND

1.6 10tert-Butylbenzene ND

1.4 101,2,4-Trimethylbenzene ND

1.6 10sec-Butyl Benzene ND

1.5 10p-Isopropyltoluene ND

1.7 101,3-Dichlorobenzene ND

1.7 101,4-Dichlorobenzene ND

1.5 10n-Butylbenzene ND

1.8 101,2-Dichlorobenzene ND

1.8 101,2-Dibromo-3-Chloropropane ND

1.4 10Hexachlorobutadiene ND

1.5 101,2,4-Trichlorobenzene ND

1.7 10Naphthalene ND

1.7 101,2,3-Trichlorobenzene ND

2.3 102-Butanone ND

2.0 20MIBK ND

5.0 10Hexachloroethane ND
100 2001,4-Dioxane ND

5.0 202-Hexanone ND

8.2 20Acetone ND
(S) Dibromofluoromethane 109
(S) Toluene-d8 106
(S) 4-Bromofluorobenzene 98.7

Page 54 of 71 ends

MB Summary Report
Work Order:

Matrix:

Units:

Prep Method:

SW8260BAnalytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
ug/Kg
11545605035
Soil 478130
2309157
9/20/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier
120 1000Dichlorodifluoromethane ND
180 1000Chloromethane ND
200 1000Vinyl Chloride ND
270 1000Bromomethane ND
300 1000Chloroethane ND
210 1000Trichlorofluoromethane ND
200 10001,1-Dichloroethene ND
190 1000Freon 113 ND
710 1000Methylene Chloride ND
210 1000trans-1,2-Dichloroethene ND
230 1000MTBE ND
1200 5000TBA ND
230 1000Diisopropyl ether ND
220 10001,1-Dichloroethane ND
230 1000Ethyl tert-Butyl ether ND
220 1000cis-1,2-Dichloroethene ND
190 10002,2-Dichloropropane ND
230 1000Bromochloromethane ND
240 1000Chloroform ND
210 1000Carbon Tetrachloride ND
210 10001,1,1-Trichloroethane ND
200 10001,1-Dichloropropene ND
220 1000Benzene ND
230 1000TAME ND
230 10001,2-Dichloroethane ND
180 1000Trichloroethene ND
180 1000Dibromomethane ND
190 10001,2-Dichloropropane ND
200 1000Bromodichloromethane ND
160 1000cis-1,3-Dichloropropene ND
180 1000Toluene ND
170 1000Tetrachloroethene ND
160 1000trans-1,3-Dichloropropene ND
180 10001,1,2-Trichloroethane ND
190 1000Dibromochloromethane ND
180 10001,3-Dichloropropane ND
180 10001,2-Dibromoethane ND
180 1000Chlorobenzene ND
170 1000Ethylbenzene ND
190 10001,1,1,2-Tetrachloroethane ND
320 1000m,p-Xylene ND
170 1000o-Xylene ND
160 1000Styrene ND
1 70 1000Bromoform ND
160 1000Isopropyl Benzene ND

Page 55 of 71 ends

MB Summary Report
Work Order:

Matrix:

Units:

Prep Method:

SW8260BAnalytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
ug/Kg
11545605035
Soil 478130
2309157
9/20/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier
160 1000n-Propylbenzene ND
180 1000Bromobenzene ND
190 10001,1,2,2-Tetrachloroethane ND
180 10002-Chlorotoluene ND
160 10001,3,5-Trimethylbenzene ND
190 10001,2,3-Trichloropropane ND
160 10004-Chlorotoluene ND
160 1000tert-Butylbenzene ND
140 10001,2,4-Trimethylbenzene ND
160 1000sec-Butyl Benzene ND
150 1000p-Isopropyltoluene ND
170 10001,3-Dichlorobenzene ND
170 10001,4-Dichlorobenzene ND
150 1000n-Butylbenzene ND
180 10001,2-Dichlorobenzene ND
180 10001,2-Dibromo-3-Chloropropane ND
140 1000Hexachlorobutadiene ND
150 10001,2,4-Trichlorobenzene ND
170 1000Naphthalene ND
170 10001,2,3-Trichlorobenzene ND
230 10002-Butanone ND
200 2000MIBK ND
500 1000Hexachloroethane ND
10000 200001,4-Dioxane ND
500 20002-Hexanone ND
820 2000Acetone 1400
(S) Dibromofluoromethane 124
(S) Toluene-d8 102
(S) 4-Bromofluorobenzene 97.9

Page 56 of 71 ends

MB Summary Report
Work Order:

Matrix:

Units:

Prep Method:

SW8260BAnalytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
ug/Kg
11545755035
Soil 478150
2309157
9/20/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier

1.2 10Dichlorodifluoromethane ND

1.8 10Chloromethane ND

2.0 10Vinyl Chloride ND

2.7 10Bromomethane ND

3.0 10Chloroethane ND

2.1 10Trichlorofluoromethane ND

2.0 101,1-Dichloroethene ND

1.9 10Freon 113 ND

7.1 10Methylene Chloride ND

2.1 10trans-1,2-Dichloroethene ND

2.3 10MTBE ND
12 50TBA ND

2.3 10Diisopropyl ether ND

2.2 101,1-Dichloroethane ND

2.3 10Ethyl tert-Butyl ether ND

2.2 10cis-1,2-Dichloroethene ND

1.9 102,2-Dichloropropane ND

2.3 10Bromochloromethane ND

2.4 10Chloroform ND

2.1 10Carbon Tetrachloride ND

2.1 101,1,1-Trichloroethane ND

2.0 101,1-Dichloropropene ND

2.2 10Benzene ND

2.3 10TAME ND

2.3 101,2-Dichloroethane ND

1.8 10Trichloroethene ND

1.8 10Dibromomethane ND

1.9 101,2-Dichloropropane ND

2.0 10Bromodichloromethane ND

1.6 10cis-1,3-Dichloropropene ND

1.8 10Toluene ND

1.7 10Tetrachloroethene ND

1.6 10trans-1,3-Dichloropropene ND

1.8 101,1,2-Trichloroethane ND

1.9 10Dibromochloromethane ND

1.8 101,3-Dichloropropane ND

1.8 101,2-Dibromoethane ND

1.8 10Chlorobenzene ND

1.7 10Ethylbenzene ND

1.9 101,1,1,2-Tetrachloroethane ND

3.2 10m,p-Xylene ND

1.7 10o-Xylene ND

1.6 10Styrene ND

1. 7 10Bromoform ND

1.6 10Isopropyl Benzene ND

Page 57 of 71 ends

MB Summary Report
Work Order:

Matrix:

Units:

Prep Method:

SW8260BAnalytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
ug/Kg
11545755035
Soil 478150
2309157
9/20/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier

1.6 10n-Propylbenzene ND

1.8 10Bromobenzene ND

1.9 101,1,2,2-Tetrachloroethane ND

1.8 102-Chlorotoluene ND

1.6 101,3,5-Trimethylbenzene ND

1.9 101,2,3-Trichloropropane ND

1.6 104-Chlorotoluene ND

1.6 10tert-Butylbenzene ND

1.4 101,2,4-Trimethylbenzene ND

1.6 10sec-Butyl Benzene ND

1.5 10p-Isopropyltoluene ND

1.7 101,3-Dichlorobenzene ND

1.7 101,4-Dichlorobenzene ND

1.5 10n-Butylbenzene ND

1.8 101,2-Dichlorobenzene ND

1.8 101,2-Dibromo-3-Chloropropane ND

1.4 10Hexachlorobutadiene ND

1.5 101,2,4-Trichlorobenzene ND

1.7 10Naphthalene ND

1.7 101,2,3-Trichlorobenzene ND

2.3 102-Butanone ND

2.0 20MIBK ND

5.0 10Hexachloroethane ND
100 2001,4-Dioxane ND

5.0 202-Hexanone ND

8.2 20Acetone ND
(S) Dibromofluoromethane 96.1
(S) Toluene-d8 104
(S) 4-Bromofluorobenzene 99.5
Work Order:

Matrix:

Units:

Prep Method:

SW6010BAnalytical
Method:

Prep Date:

Analyzed Date:
09/21/23 Prep Batch:

Analytical
Batch:
mg/Kg
11545833050B
Soil 478197
2309157
9/21/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier

0.15 1.30Arsenic ND

0.10 3.00Lead 0.18

Page 58 of 71 ends

MB Summary Report
Work Order:

Matrix:

Units:

Prep Method:

SW8260B(TPH)Analytical
Method:

Prep Date:

Analyzed Date:
09/21/23 Prep Batch:

Analytical
Batch:
ug/Kg
11546175035GRO
Soil 478191
2309157
9/21/2023
Parameters
Method
Blank
Conc.

PQL MDL
Lab
Qualifier
43 100TPH as Gasoline ND
(S) 4-Bromofluorobenzene 76.3

Page 59 of 71 ends

LCS/LCSD Summary Report
Raw values are used in quality control assessment.

Work Order:

Matrix:

Units:

Prep Method:

Analytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
3546_TPH 1154541
9/21/2023
SW8015B 478162
mg/Kg
2309157
Soil
Parameters MDL PQL
Method
Blank
Conc.

Spike
Conc.

LCS %
Recovery
LCSD %
Recovery

LCS/LCSD
% RPD
%
Recovery
Limits
% RPD
Limits
Lab
Qualifier

2.0 25.00.85 1.41 3052 - 115TPH as Diesel 85.5 84.40.860 200 45 - 130Pentacosane (S) 95.3 94.2
Work Order:

Matrix:

Units:

Prep Method:

Analytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
3546_OCP 1154548
9/20/2023
SW8081B 478145
ug/Kg
2309157
Soil
Parameters MDL PQL
Method
Blank
Conc.

Spike
Conc.

LCS %
Recovery
LCSD %
Recovery

LCS/LCSD
% RPD
%
Recovery
Limits
% RPD
Limits
Lab
Qualifier

2.0 400.16 8.59 3025 - 135gamma-BHC (Lindane) 75.3 81.9ND

2.0 400.11 8.16 3040 - 130Heptachlor 73.5 79.7ND

2.0 400.20 9.97 3025 - 140Aldrin 90.6 100ND

2.0 400.15 9.23 30 60 - 130delta-BHC 77.4 85.0ND

2.0 400.19 8.33 30 55 - 135Heptachlor 74.7 81.3ND

2.0 400.13 3.84 30 45 - 1404,4'-DDT 57.5 59.8ND
100 48 - 125Tetrachloro-M-Xylene (S) 79.7 87.5
100 38 - 135Decachlorobiphenyl (S) 68.4 78.0
Work Order:

Matrix:

Units:

Prep Method:

Analytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
5035 1154560
9/20/2023
SW8260B 478130
ug/Kg
2309157
Soil
Parameters MDL PQL
Method
Blank
Conc.

Spike
Conc.

LCS %
Recovery
LCSD %
Recovery

LCS/LCSD
% RPD
%
Recovery
Limits
% RPD
Limits
Lab
Qualifier
10 50.02.0 0.370 3053.7 - 1391,1-Dichloroethene 108 108 ND 10 50.02.2 1.25 3066.5 - 135Benzene 113 111ND
10 50.01.8 3.87 3057.5 - 150Trichloroethene 100 96.5ND
10 50.01.8 0.185 3056.8 - 134Toluene 108 108ND
10 50.01.8 1.93 3057.4 - 134Chlorobenzene 102 104 ND

50.0 59.8 - 148(S) Dibromofluoromethane 103 102

50.0 55.2 - 133(S) Toluene-d8 100 98.1

50.0 55.8 - 141(S) 4-Bromofluorobenzene 103 97.9

Page 60 of 71 ends

LCS/LCSD Summary Report
Raw values are used in quality control assessment.

Work Order:

Matrix:

Units:

Prep Method:

Analytical
Method:

Prep Date:

Analyzed Date:
09/20/23 Prep Batch:

Analytical
Batch:
5035 1154575
9/20/2023SW8260B 478150
ug/Kg
2309157
Soil
Parameters MDL PQL
Method
Blank
Conc.

Spike
Conc.

LCS %
Recovery
LCSD %
Recovery

LCS/LCSD
% RPD
%
Recovery
Limits
% RPD
Limits
Lab
Qualifier
10 50.02.0 4.74 3053.7 - 1391,1-Dichloroethene 86.4 82.3 ND 10 50.02.2 5.41 3066.5 - 135Benzene 95.0 90.1ND
10 50.01.8 3.05 3057.5 - 150Trichloroethene 99.8 96.9ND 10 50.01.8 4.21 3056.8 - 134Toluene 102 97.6ND
10 50.01.8 3.46 3057.4 - 134Chlorobenzene 99.9 96.6 ND

50.0 59.8 - 148(S) Dibromofluoromethane 105 107

50.0 55.2 - 133(S) Toluene-d8 107 102

50.0 55.8 - 141(S) 4-Bromofluorobenzene 105 101
Work Order:

Matrix:

Units:

Prep Method:

Analytical
Method:

Prep Date:

Analyzed Date:
09/21/23 Prep Batch:

Analytical
Batch:
3050B 1154583
9/21/2023
SW6010B 478197
mg/Kg
2309157
Soil
Parameters MDL PQL
Method
Blank
Conc.

Spike
Conc.

LCS %
Recovery
LCSD %
Recovery

LCS/LCSD
% RPD
%
Recovery
Limits
% RPD
Limits
Lab
Qualifier

1.30 500.15 2.67 3080 - 120Arsenic 96.0 98.6ND

3.00 500.10 3.39 30 80 - 120Lead 98.6 1020.18
Work Order:

Matrix:

Units:

Prep Method:

Analytical
Method:

Prep Date:

Analyzed Date:
09/21/23 Prep Batch:

Analytical
Batch:
5035GRO 1154617
9/21/2023
SW8260B(TPH) 478191
ug/Kg
2309157
Soil
Parameters MDL PQL
Method
Blank
Conc.

Spike
Conc.

LCS %
Recovery
LCSD %
Recovery

LCS/LCSD
% RPD
%
Recovery
Limits
% RPD
Limits
Lab
Qualifier
100 100043 16.5 3048.2 - 132TPH as Gasoline 85.6 101ND
50 43.9 - 127(S) 4-Bromofluorobenzene 77.5 88.5

Page 61 of 71 ends

MS/MSD Summary Report
Raw values are used in quality control assessment.

Work Order: 2309157
Analyzed Date:

Prep Date:

Matrix:

Prep Method: 09/20/23
2309157-017ASpiked Sample:

Analytical
Method:

Prep Batch:

Units:

Analytical
Batch:
11545483546_OCP
Soil 478246
ug/Kg
SW8081B 9/22/2023
Parameters MDL PQL Sample
Conc.

Spike
Conc.

MS %
Recovery
MSD %
Recovery
MS/MSD
% RPD
%
Recovery
Limits
% RPD
Limits
Lab
Qualifier
40 25 - 1350.159 2.00 17.2 30gamma-BHC (Lindane) 94.4 79.4ND 40 40 - 1300.105 2.00 21.6 30Heptachlor 105 84.8ND
40 25 - 1400.195 2.00 12.1 30Aldrin 96.5 85.4ND
40 60 - 1300.148 2.00 18.6 30Dieldrin 99.4 82.3ND
40 55 - 1350.188 2.00 23.9 30Endrin 111 87.4ND
40 45 - 1400.129 2.00 27.4 304,4'-DDT 115 78.85.63
100 48 - 125Tetrachloro-M-Xylene (S) 93.5 84.6
100 38 - 135Decachlorobiphenyl (S) 92.1 78.8
Work Order: 2309157
Analyzed Date:

Prep Date:

Matrix:

Prep Method: 09/21/23
2309157-017ASpiked Sample:

Analytical
Method:

Prep Batch:

Units:

Analytical
Batch:
11545833050B
Soil 478197
mg/Kg
SW6010B 9/21/2023
Parameters MDL PQL Sample
Conc.

Spike
Conc.

MS %
Recovery
MSD %
Recovery
MS/MSD
% RPD
%
Recovery
Limits
% RPD
Limits
Lab
Qualifier
50 71.0 - 1210.15 5.00 0.205 30Arsenic 92.1 91.8ND
50 67.9 - 1180.10 5.00 0.000 30Lead 91.3 91.36.85

Page 62 of 71 ends

Laboratory Qualifiers and Definitions
Method Detection Limit (MDL) - the minimum concentration of a subst ance that can be measured and reported with a 99% confidence that the analyte concentration is greater than zero
Matrix Spike (MS/MSD) - Client sample spiked with identical conc entrations of target analyte (s). The spiking occurs prior to the sample preparation and analysis. They are used to document the precision and bias of a method in a given sample matrix.

Matrix - the component or substrate that contains the analyte of interest (e.g., - groundwater, sediment, soil, waste water, etc) Laboratory Control Sample (LCS ad LCSD) - A known matrix spiked with compounds representative of the target analyte(s). This is used to document laboratory performance.

Duplicate - a field sample and/or laboratory QC sample prepared in duplicate following all of the same processes and procedures used on the original sample (sample duplicate, LCSD, MSD)
Blank (Method/Preparation Blank) -MB/PB - An analyte-free matrix to which all reagents are added in the same volumes/proportions as used in sample processing. The method blank is used to document contamination resulting from the analytical process.

Practical Quantitation Limit/Reporting Limit/Limit of Quantitation (PQL /RL/LOQ) - a laboratory determined value at 2 to 5 times above the MDL that can be reproduced in a manner that results in a 99% confidence level that the result is both accurate and precise. PQLs/RLs/LODs reflect all preparation factors and/or dilution factors that have been applied to the sample during the preparation and/or analytical processes.

Precision (%RPD) - The agreement among a set of replicate/duplicate measurements without regard to known value of the replicates Surrogate (S) or (Surr) - An organic compound which is similar to the target analyte(s) in chemical composition and behavior in the analytical process, but which is not normally found in environmental samples. Surrogates are used in most organic analysis to demonstrate matrix compatibility with the chosen method of analysis
Tentatively Identified Compound (TIC) -A compound not contained within the analytical calibration standards but present in the GCMS library of defined compounds. When the library is searched for an unknown compound, it c an frequently give a tentative identification to the compound based on retention time and primary and secondary ion match. TICs are reported as estimates and are candidates for further investigation.

Units: the unit of measure used to express the reported result - mg/L and mg/Kg (equivalent to PPM - parts per million in liquid and solid), ug/L and ug/Kg (equivalent to PPB - parts per billion in liquid and solid), ug/m3, mg/m3, ppbv and ppmv (all units of measure for reporting concentrations in air), % ( equivalent to 10000 ppm or 1,000,000 ppb), ug/Wipe ( concentration found on the surface of a single Wipe usually taken over a 100cm2 surface) B - Indicates when the analyte is found in the associated method or preparation blank D - Surrogate is not recoverable due to the necessary dilution of the sample E - Indicates the reportable value is outside of the calibration range of the instrument but within the linear range of the instrument (unless otherwise noted) Values reported with an E qualifier should be considered as estimated.

H- Indicates that the recommended holding time for the analyte or compound has been exceeded J- Indicates a value between the method MDL and PQL and that the reported concentration should be considered as estimated rather the quantitative NA - Not Analyzed
N/A - Not Applicable
ND - Not Detected at a concentration greater than the PQL/RL or, if reported to the MDL, at greater than the MDL.

NR - Not recoverable - a matrix spike concentration is not recoverable due to a concentration within the original sample that is greater than four times the spike concentration added
R- The % RPD between a duplicate set of samples is outside of the absolute values established by laboratory control charts S- Spike recovery is outside of established method and/or laboratory control limits. Further explanation of the use of this qualifier should be included within a case narrative
X -Used to indicate that a value based on pattern identification is within the pattern range but not typical of the pattern found in standards.

Further explanation may
or may not be provided within the sample footnote and/or the case narrative.

DEFINITIONS:

Accuracy/Bias (% Recovery) - The closeness of agreement between an observed value and an accepted reference value.

LABORATORY QUALIFIERS:

Page 63 of 71 ends

Sample Receipt Checklist
Client Name: AEI Consultants
Project Name: 10857 ; -67; -77; and -87 Linda Vista Drive Work Order No.: 2309157
Date and Time Received: 9 /19/2023 5:48:00PM
Received By: Claudia Moreno
Physically Logged By: Claudia Moreno
Carrier Name: Client Drop Off
Checklist Completed By: Claudia Moreno
RECEIVED 3 EXTRA SAMPLES, SB-3-4', SB-2-6', SB-3A-6' NOT LISTED ON COC.

Comments:

Chain of Custody (COC) Information
Shipping Container/Cooler In Good Condition?
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Chain of custody present?
Chain of custody signed when relinquished and received? Chain of custody agrees with sample labels?
Samples in proper container/bottle?
Sufficient sample volume for indicated test?
All samples received within holding time?
Container/Temp Blank temperature in compliance?
Water-VOA vials have zero headspace?
Water-pH acceptable upon receipt?
Temperature:

Yes
Not Present
Not Present
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
N/A
Samples containers intact? Yes
°C
Sample Receipt Information
Sample Preservation and Hold Time (HT) Information
pH Checked by: N/A pH Adjusted by: N/A

6.0

Page 64 of 71 ends

Login Summary Report
Report Due Date:
9/19/2023
IIAEI ConsultantsTL5781
10857; -67; -77; and -87 Linda Vista Drive
482220
9/26/2023
TAT Requested:

Date Received:

Time Received:

QC Level:

Project Name:

Project # :

Comments:

Client ID:
5+ day:5
5:48 pm
2309157Work Order # :

SubbedRequested
Tests
Test
On Hold
Sample
On Hold
Scheduled
Disposal
MatrixCollection
Date/Time
Client
Sample ID
WO Sample ID
SB-1-6'2309157-001A Soil 03/17/24 09/19/23 9:52
VOC_S_GRO
TPHDO_S_8015(Mod
)
SB-1-12'2309157-002A Soil 03/17/2409/19/23 10:20
VOC_S_GRO
TPHDO_S_8015(Mod
)
TSB-1-6'2309157-003A Soil 03/17/2409/19/23 9:52
EN_VOC_8260B
TSB-1-6'2309157-003B Soil 03/17/2409/19/23 9:52
Hold Samples
TSB-1-12'2309157-004A Soil 03/17/2409/19/23 10:20
EN_VOC_8260B
TSB-1-12'2309157-004B Soil 03/17/2409/19/23 10:20
Hold Samples
SB-2A-6'2309157-005A Soil 03/17/2409/19/23 11:19
VOC_S_GRO
TPHDO_S_8015(Mod
)
SB-2A-12'2309157-006A Soil 03/17/2409/19/23 11:42
VOC_S_GRO
TPHDO_S_8015(Mod
)
TSB-2A-6'2309157-007A Soil 03/17/2409/19/23 11:19
EN_VOC_8260B
TSB-2A-6'2309157-007B Soil 03/17/2409/19/23 11:19
Hold Samples
TSB-2A-12'2309157-008A Soil 03/17/2409/19/23 11:42
EN_VOC_8260B
TSB-2A-12'2309157-008B Soil 03/17/2409/19/23 11:42
Hold Samples
SB-3B-6'2309157-009A Soil 03/17/2409/19/23 15:37
TPHDO_S_8015(Mod
)
VOC_S_GRO
SB-3B-12'2309157-010A Soil 03/17/2409/19/23 15:38
VOC_S_GRO
TPHDO_S_8015(Mod
)
TSB-3B-6'2309157-011A Soil 03/17/2409/19/23 15:45
EN_VOC_8260B

Page 65 of 71 ends

Login Summary Report
Report Due Date:
9/19/2023
IIAEI ConsultantsTL5781
10857; -67; -77; and -87 Linda Vista Drive
482220
9/26/2023
TAT Requested:

Date Received:

Time Received:

QC Level:

Project Name:

Project # :

Comments:

Client ID:
5+ day:5
5:48 pm
2309157Work Order # :

SubbedRequested
Tests
Test
On Hold
Sample
On Hold
Scheduled
Disposal
MatrixCollection
Date/Time
Client
Sample ID
WO Sample ID
TSB-3B-6'2309157-011B Soil 03/17/24 09/19/23 15:45
Hold Samples
TSB-3B-12'2309157-012A Soil 03/17/2409/19/23 15:45
EN_VOC_8260B
TSB-3B-12'2309157-012B Soil 03/17/2409/19/23 15:45
Hold Samples
SB-4-6'2309157-013A Soil 03/17/2409/19/23 14:25
VOC_S_GRO
TPHDO_S_8015(Mod
)
SB-4-12'2309157-014A Soil 03/17/2409/19/23 14:44
VOC_S_GRO
TPHDO_S_8015(Mod
)
TSB-4-6'2309157-015A Soil 03/17/2409/19/23 14:25
EN_VOC_8260B
TSB-4-6'2309157-015B Soil 03/17/2409/19/23 14:25
Hold Samples
TSB-4-12'2309157-016A Soil 03/17/2409/19/23 14:44
EN_VOC_8260B
TSB-4-12'2309157-016B Soil 03/17/2409/19/23 14:25
Hold Samples
SB-5-1.5'2309157-017A Soil 03/17/2409/19/23 12:13
Met_S_As Pb
Pest_S_8081OCP
SB-6-1.5'2309157-018A Soil 03/17/2409/19/23 13:12
Met_S_As Pb
Pest_S_8081OCP
SB-7-1.5'2309157-019A Soil 03/17/2409/19/23 12:03
Met_S_As Pb
Pest_S_8081OCP
SB-8-1.5'2309157-020A Soil 03/17/2409/19/23 12:31
Met_S_As Pb
Pest_S_8081OCP
SB-9-1.5'2309157-021A Soil 03/17/2409/19/23 12:38
Met_S_As Pb
Pest_S_8081OCP
SB-10-1.5'2309157-022A Soil 03/17/2409/19/23 12:47
Met_S_As Pb
Pest_S_8081OCP
SB-11-1.5'2309157-023A Soil 03/17/2409/19/23 12:55
Met_S_As Pb

Page 66 of 71 ends

Login Summary Report
Report Due Date:
9/19/2023
IIAEI ConsultantsTL5781
10857; -67; -77; and -87 Linda Vista Drive
482220
9/26/2023
TAT Requested:

Date Received:

Time Received:

QC Level:

Project Name:

Project # :

Comments:

Client ID:
5+ day:5
5:48 pm
2309157Work Order # :

SubbedRequested
Tests
Test
On Hold
Sample
On Hold
Scheduled
Disposal
MatrixCollection
Date/Time
Client
Sample ID
WO Sample ID
Pest_S_8081OCP
SB-1-4'2309157-024A Soil 03/17/2409/19/23 9:40
Hold Samples
SB-1-8.25'2309157-025A Soil 03/17/2409/19/23 10:21
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SB-2A-10'2309157-026A Soil 03/17/2409/19/23 11:56
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SB-3B-10'2309157-027A Soil 03/17/2409/19/23 15:39
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SB-4-7.5'2309157-028A Soil 03/17/2409/19/23 14:26
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SB-5-4'2309157-029A Soil 03/17/2409/19/23 12:12
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SB-6-4'2309157-030A Soil 03/17/2409/19/23 13:11
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SB-7-4'2309157-031A Soil 03/17/2409/19/23 12:04
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SB-8-4'2309157-032A Soil 03/17/2409/19/23 12:30
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SB-9-4'2309157-033A Soil 03/17/2409/19/23 12:37
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SB-10-4'2309157-034A Soil 03/17/2409/19/23 12:48
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SB-11-4'2309157-035A Soil 03/17/2409/19/23 12:54
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SB-3-4'2309157-036A Soil 03/17/2409/19/23 13:43
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SB-3A-6'2309157-037A Soil 03/17/2409/19/23 15:17
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SB-2-6'2309157-038A Soil 03/17/2409/19/23 11:01
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Cupertino City CouncilApril 1, 2026

Cupertino City Council
April 1, 2026