City Council/Public Financing Authority
March 3, 2026

Prepared for:

City of Huntington Beach
Public Works Department - Engineering
2000 Main Street
Huntington Beach, California 92648

GEOTECHNICAL REPORT

PROPOSED IMPROVEMENTS

EDISON PARK

HUNTINGTON BEACH, CALIFORNIA

Prepared by:

3530 Hyland Avenue, Suite 100
Costa Mesa, CA 92626
Project Number: SC1369
November 30, 2023

SC1369\FINAL Geotechnical Report - Edison Park Improvements 11/30/2023

GEOTECHNICAL REPORT

PROPOSED IMPROVEMENTS

EDISON PARK

HUNTINGTON BEACH, CALIFORNIA

This report was prepared by Geosyntec Consultants, Inc., under the supervision of the professionals whose signatures appear hereon. The findings or professional opinions were prepared in accordance with generally accepted professional engineering and geologic practice.

No attempt to verify the accuracy of the data provided by others was made. No warranty is expressed or implied.

Sneha Upadhyaya, Ph.D., P.E. (CA) Yonas Zemuy, P.E. (AZ, CA, ID, NV) Senior Staff Professional Senior Principal Engineer

Date: November 30, 2023
09-30-24
12-31-23

SC1369\FINAL Geotechnical Report - Edison Park Improvements 11/30/2023

TABLE OF CONTENTS
Page

1. INTRODUCTION ............................................................................................................ 1

1.1 General ..................................................................................................................... 1

1.2 Project Understanding.............................................................................................. 1

1.3 Site Background ....................................................................................................... 2

1.4 Objective and Scope of Services ............................................................................. 3

1.5 Organization of the Report ...................................................................................... 3

2. RELEVANT DOCUMENT REVIEW ............................................................................. 5

2.1 Site Documents Reviewed ....................................................................................... 5

2.2 Geosyntec (2018) Feasibility Study for Settlement Related Damage Repair .......... 5

2.3 Geosyntec (2020, 2021) Field Investigations .......................................................... 6

2.4 Geosyntec (2023) Oil Well Locating Geophysical Survey ..................................... 7

2.5 RJM (2023) Edison Park Draft Conceptual Plan ..................................................... 7

3. SITE SURFACE AND SUBSURFACE CONDITIONS ................................................. 8

3.1 Surface Conditions ................................................................................................... 8

3.2 Subsurface Conditions ............................................................................................. 8

3.3 Groundwater Conditions .......................................................................................... 8

4. GEOHAZARDS ............................................................................................................... 9

4.1 Strong Ground Shaking and Design Ground Motions ............................................. 9

4.2 Liquefaction ........................................................................................................... 10

4.3 Lateral Spreading ................................................................................................... 11

4.4 Fault Surface Rupture ............................................................................................ 11

4.5 Other Geologic Hazards ......................................................................................... 11

5. GEOTECHNICAL ENGINEERING ASSESSMENTS AND
RECOMMENDATIONS ................................................................................................ 12

5.1 General ................................................................................................................... 12

5.2 Earthwork and Grading .......................................................................................... 12

5.2.1 Subgrade Preparation and Overexcavation ............................................... 12

5.2.2 Fill and Backfill ......................................................................................... 13

5.2.3 Surface Drainage ....................................................................................... 13

5.3 Shallow Foundation Recommendations ................................................................ 14

5.4 Slabs-On-Grade ..................................................................................................... 15

5.5 Lateral Earth Pressures for Retaining Walls .......................................................... 15

5.6 Construction Observation and Considerations ...................................................... 15

6. LIMITATIONS ............................................................................................................... 17

TABLE OF CONTENTS (Continued)
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7. REFERENCES ............................................................................................................... 18

LIST OF TABLES
Table 1: Summary of Findings and Preliminary Recommendation from Geosyntec’s Review of Edison Park Draft Conceptual Plan Prepared by RJM dated 25 July 2023 Table 2: Nearby Active Faults
Table 3: Design Ground Motion Parameters

LIST OF FIGURES
Figure 1: Site Location Map
Figure 2: Draft Conceptual Plan Prepared by RJM
Figure 3: Waste Settlement Estimates
Figure 4: Existing Conditions and Field Investigation Locations

LIST OF APPENDICES
Appendix A: Geosyntec (2021) Waste Delineation Report
Appendix B: Laboratory Analytical Test Results
Appendix C: Geosyntec (2023) Geophysical Oil Well Locating Survey Report Appendix D: ASCE7 Hazard Tool Output

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1. INTRODUCTION

1.1 General
Geosyntec Consultants, Inc. (Geosyntec) is pleased to submit this Geotechnical Report to the City of Huntington Beach, Public Works Department (City). This report documents the review of the available geotechnical subsurface information from previous field investigations, geotechnical engineering assessment and provides preliminary geotechnical recommendations in support of the proposed park improvements at Edison Park (Project), located in Huntington Beach, California (Site). The site location is shown on Figure 1.

Geosyntec conducted the scope of services documented in this report in general accordance with the Professional Services Contract between the City and Geosyntec for As- Needed General Environmental Engineering Services, dated February 2021 and the scope of work described in our proposal dated April 7, 2023.

1.2 Project Understanding
Edison Park was constructed over the Cannery Street Former Refuse Disposal Station, also previously known as Cannery Street Landfill (CSL) , in early 1970s. The types of waste disposed at the CSL generally included wood (stumps, logs, and large timber) and construction debris.

Edison Park is approximately 39.7 acres, located at the northwest corner of the intersection of Magnolia Street and Hamilton Avenue in the City of Huntington Beach. The site’s formal address is 21379 Magnolia Street, Huntington Beach, California 92647.

Several existing facilities/amenities at the Site are constructed on top of existing waste material deposited at the former CSL. Settlement, differential settlement, and potential sinkholes are typically expected to occur at facilities constructed on top of waste. The effect of settlement, differential settlement and/or a combination of both are observed at the existing tennis courts, sidewalks, open park areas and other hardscape/amenities at the Site.

Geosyntec understands that the City is currently evaluating conceptual designs for impro vements at the Site. The proposed improvements include construction of new structures and amenities such as a sport court plaza with seating and shade, basketball, tennis, and pickleball courts, practice hitting walls, retaining walls, fence posts for batt ing cages, entry monument sign, new shade shelters, an all-wheels skate plaza, pump track, and light poles. Figure 2 includes the most recent draft conceptual plan prepared by RJM Design Group (RJM).

Given the historic Site use as a landfill and the presence of waste materials that are susceptible to settlement, the City retained Geosyntec to perform geotechnical evaluation to assess the feasibility and compatibility of the proposed improvements at the Site as well as provide preliminary geotechnical recommendations to support the design.

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1.3 Site Background
The Site was used by Southern California Edison (SCE) as a sand and gravel pit from 1956 to 1957. In December of 1957, the County of Orange purchased the site from SCE . Between December 1957 and May 1969, the County of Orange owned and operated the Cannery Street waste disposal station, which has been referred to as the Cannery Street Landfill or Ediso n Pit.

Based on information included in the Solid Waste Assessment Test (SWAT) prepared by The Earth Technology Corporation (TETC , 1990), approximately 90 percent of the pit is 36 ft deep, while the remaining 10 percent is approximately 46 ft deep. The si des of the excavation range from vertical to a 1 horizontal:1 vertical (1H:1V) slope. According to planning documents, filling the landfill was proposed in two stages.

The first stage consisted of filling the portion of the pit below the water table, which was found to be approximately 10 ft below ground surface (bgs), with logs, stumps, and large timber. After the first stage of filling was complete, the County planned a second stage of filling by placing approximately 1 ft of soil over the logs, stumps, and large timber and filling the remaining available space (approximately 500,000 yd
3) with municipal solid waste (MSW). However, the
Closed Landfill Environmental Assessment and Response (CLEAR) report (TRC, 2001) states that no MSW was disposed of on the site; rather, that only construction debris was landfilled.

Records also state the waste disposed of at the site was placed directly into standing water in the pit. Liners were not placed, nor were leachate or gas collection systems installed, at the sit e. The waste was confined to the rectangular westerly 20.5 acres of the site. The edge of native soils around the waste varies from 20 ft in width to less than 12 ft at some points along the west and north boundaries.

The CLEAR report (TRC, 2001) states: “Boundaries of the refuse prism remained constant during its construction based on a review of aerial photographs dated 1953, 1959, and 1967 and Project documents. Thus, the refuse appears to have been placed within reasonably well -defined limits within the Site.”
The County built up the western edge of the site with fill to prevent overflow from the pit from washing into the nearby homes to the west. As of July 1965, dumping was restricted to materials that would not float. Household waste was not allowe d at the site. To control the water level in the pit, an open ditch was excavated between July 1967 and June 1968 to connect the pit to a storm drain along Hamilton Avenue.

Upon completion of fill, soil stockpiled to one side of the site was spread over the entire area. The soil cover was graded to improve drainage from the northwest to the southeast. The depth of soil cover is estimated to range from 2 to 3 ft over the site.

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Upon closure of the landfill, the site was deeded to the City of Huntington Beac h in 1970. To comply with the park restriction zoning, the City developed the area into a public park named Edison Community Park. In 1971, approximately 5 acres of the site were deeded to the City’s School District of Orange County to be used as the Willi am E. Kettler Elementary School Playground. Since then, the City and the School District have operated the site for recreation and school purposes and have had control of and responsibility for site conditions.

A groundwater Solid Waste Assessment Test (S WAT) was conducted in 1989, and the results indicated the need for quarterly groundwater monitoring at the site. Six groundwater monitoring wells were installed in June 1990 and monitored from 1990 to 1994. The results of groundwater monitoring indicated that groundwater quality was naturally poor both upgradient and downgradient of the site due to saltwater intrusion. No organic compounds were detected in the wells at the site during monitoring. The California Regional Water Quality Control Board (CRWQCB) approved the termination of the groundwater monitoring program in 1994.

1.4 Objective and Scope of Services
The objectives of this study were to develop understanding of the Site subsurface conditions through review of existing documents and previous field investigations , develop relevant geotechnical design parameters and provide preliminary geotechnical recommendations as it relates to the proposed improvements.

The specific geotechnical scope of services provided by Geosyntec included:
• Reviewing available project documents including previous field investigation reports; • Reviewing site geologic and seismic hazards;
• Performing geotechnical engineering analyses;
• Developing preliminary geotechnical recommendations; and • Preparing this geotechnical report to present results and findings of the document review , results of the geotechnical engineering analyses, and preliminary recommendations.

1.5 Organization of the Report
The body of this Report is divided into four sections, which contain the following:
• Section 1 – Introduction;
• Section 2 – Relevant Document Review – provides a list of documents reviewed and a summary of previous field investigations;
• Section 3 – Site Conditions – describes our understanding of the surface and subsurface conditions based on the review of previous field investigation and interpretation of the available data;

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• Section 4 – Geohazards – discusses Site Geohazards, including a ssessment of Design Ground Motions; and
• Section 5 – Geotechnical Recommendations – presents the results of geotechnical evaluations and provides preliminary geotechnical recommendations for design and construction of the proposed Site improvements.

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2. RELEVANT DOCUMENT REVIEW

2.1 Site Documents Reviewed
Geosyntec performed a limited review of available relevant project documents and existing information pertinent to the proposed improvements . Geosyntec’s review included the following documents:
• Construction Quali ty Assurance Report, Landfill Gas Collection and Control System Construction, Cannery Street Former Refuse Disposal Station, Huntington Beach, California, prepared by Geosyntec Consultants, Inc. dated March 2010. • Feasibility Study for Edison Park Settlement Related Damage Repair, Edison Park, Huntington Beach, California, prepared by Geosyntec Consultants, Inc. dated October 2018.
• Focused Area Waste Limit/Depth Evaluation, Edison Park, Huntington Beach, California, prepared by Geosyntec Consultants, Inc. dated June 2021. • Edison Park Draft Conceptual Plan, City of Huntington Beach, California, prepared by RJM Design Group dated 25 July 2023.
• Letter Report – Geophysical Oil Well Locating Survey, Edison Park, Huntington Beach, California, prepared by Geosyntec Consultants, Inc. dated July 2023.

2.2 Geosyntec (2018) Feasibility Study for Settlement Related Damage Repair Geosyntec performed a feasibil ity study in 2018 to evaluate several alternatives for repairing or reconstructing settlement related damage to the existing park facilities/amenities at the Site (Geosyntec, 2018). The primary objective of this evaluation was to develop general recommendations for the repair/reconstruction and preliminary cost estimated of the evaluated repair/reconstruction alternative of the settlement related damages. As part of this assessment, Geosyntec performed a waste settlement evaluation to estimate the rate of w aste settlement considering secondary (long term) settlement as the predominant on -going mechanism of waste settlement at the Site. In waste, secondary settlement is comprised of long-term compression due to self -weight, external loads, and biological degr adation of the organic portion of the waste materials.

The results of the settlement evaluation indicated that the site is settling at approximately 1 inch every two years. Geosyntec (2018) also evaluated the impacts of additional load (soil layer) placed on top of the waste on the estimated settlement rate and/or magnitude. The results of the settlement analyses are summarized in Figure 3.

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2.3 Geosyntec (2020, 2021) Field Investigations
Geosyntec performed limited field investigations to evaluate the approximate lateral limit(s) and depth(s) of existing waste along a selected portion of the approximate eastern limits of waste estimated by TRC (2001) at Edison Park in November 2020 and March 2021. The results and findings of these field investigation s are documented in the letter report prepared by Geosyntec (2021) and included here as Appendix A. These field investigations included five (5) exploratory test pits (TP-1 through TP-5) and twelve (12) hollow-stem auger (HSA) borings (HSA-1 through HSA-5, and HSA -2A through HSA -8A), the locations of which are shown in Figure 4. The objective of the test pits was to evaluate the approximate lateral limit(s) of the existing waste in the study. The objective of the HSA borings was to confirm the presence of waste and/or estimate the depth of the waste where present. The limits of the delineated waste based on Geosyntec (2021) are shown in Figure 4.

A summary of the findings from these investigations is provided below:
• Lateral limit of waste was delineated at two test pit locations (TP -1 and TP -2). The approximate depths to the encountered waste layer at TP-1 and TP-2 were 3.5 ft bgs and 3 ft bgs, respectively.
• Waste was identified at three test pit locations (TP-3, TP-4, and TP-5); however, the lateral limit of waste was not identified. It is likely that the lateral limits of waste at these locations extended eastward past the obstruction such as the concrete slab at TP -3 and TP -4, and concrete sidewalk at TP-5. The approximate depths to waste from existing surface at TP - 3, TP-4, and TP-5 ranged between 2 to 3 ft bgs.
• The depths of waste at HSA borings near the TRC (2001) estimated lateral limits of waste (HSA-1 through HSA-3) were found to range between 10.5 ft and 20.5 ft bgs. The depth of waste at HSA -5 near the northern edge of existing tennis court was observed to be approximately 40.5 ft bgs. The depth of waste at HSA -4 near the southern edge of the tennis court could not be identified due to refusal, however waste was still observed up to 34 ft bgs. At the borings under existing concrete slab (HSA -2A through HSA -8A), soil materials encountered in the borehole contained slight traces of waste materials based on visual and odor field observations at depths between 5 ft and 15 ft bgs. However, no clearly defined waste layer was encountered. Slight waste traces observed in th ese boreholes (HSA-2A through HSA-8A) may not be part of a continuous waste layer. • The top soil layer overlying the waste material at the Site was visually classified as silty sand (SM) in general accordance with ASTM D2488. The thickness of the soil layer generally ranged between 2 to 3.5 ft bgs.

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• The waste material encountered at the site generally composed of dark gray asphalt concrete debris and decayed wood pieces within the landscape areas and dark gray, medium to high plasticity clay soils, with trace debris and slight organic odor within the concrete slab areas. The waste materials did not have any unusual odor. The above characteristics of the waste material was consistent throughout the investigation locations. • Groundwater was encountered at ten of the twelve HSA borings during the investigations.

The depth to groundwater in the landscape borings generally ranged between 8 to 12 ft bgs.

The depth to groundwater in the concrete slab borings generally ranged between 12.5 to

16.5 ft bgs except at HSA-2A and HSA-6A where groundwater was not encountered. • Composite samples of drill cuttings from HSA drilling were collected and sent to laboratory for analytical testing prior to disposal. The analytical laboratory testing included the following:
o Total Petroleum Hydrocarbons (TPH) by EPA 8015M;
o Volatile Organic Compounds (VOCs) by EPA 8260B;
o Title 22 Metals by EPA 6010B/7471A; and
o Lead, STLC by EPA 6010B
Results of the analytical testing are included here as Appendix B. The test results indicated that the waste was non -hazardous and thus the soil cuttings w ere disposed by American Integrated Services at Crosby & Overton, Inc., which is a licensed non- hazardous off-site waste disposal facility.

2.4 Geosyntec (2023) Oil Well Locating Geophysical Survey Geosyntec retained the services of GEOVision Geophysical Services (GEOVision), a geophysical specialty subcontractor to perform a non-intrusive geophysical survey in July 2023 to locate two known existing historical oil wells located at the northeast corner of the Site (Geosyntec, 2023).

The approximate interpreted locations of the Oil Wells based on the geophysical interpretation are shown in Figure 4. A copy of the Geophysical Oil Well Locating Survey Report is included as Appendix C.

2.5 RJM (2023) Edison Park Draft Conceptual Plan
Geosyntec performed a review of the Draft Conceptual Plan prepared by RJM dated 25 July 2023 (Figure 2) to assess the compatibility and feasibility of the proposed park improvements .

Geosyntec’s review findings and preliminary recommendations related to RJM’s draft conceptual plan are presented in Table 1.

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3. SITE SURFACE AND SUBSURFACE CONDITIONS

3.1 Surface Conditions
The Site is currently developed as a public park. E xisting features/amenities at the park include tennis courts, racquetball court, basketball courts, softball field, Children’s play area, picnic area with tables and shades, skate spot, Edison Community Center Building, Fire Station, asphalt concrete paved parking areas, and landscapes.

The Site is bordered by Stilwell drive to the north, Magnolia Street to the east, Hamilton Avenue to the south, and residential areas to the west. The Site elevation ranges from approximately 3 ft to 10 ft North American Vertical Datum of 1988 (NAVD88).

3.2 Subsurface Conditions
Based on the review of the previous Site documents and field investigation reports as discussed in Section 2, the subsurface conditions within the limits of waste consists of a top soil layer overlying the waste materials. Based on the field investigation performed by Geosyntec in 2020 and 2021 (Geosyntec, 2021), the thickness of the top soil layer is estimated to range between 2 to 3.5 ft bgs.

The thickness of waste materials is estimated to range from 35 to 46 ft, with approximately 90 percent of the thickness being 35 ft (TETC, 1990). The thi ckness of waste encountered during focused field investigation as documented in Geosyntec (2021) ranged between 2.5 ft to 38 ft with smaller thicknesses near the limits of the waste.

Based on the review of available limited soil sampling and laboratory testing as documented in Geosyntec (2010), the shallow site soils generally consist of poorly graded sand with silt, silty and clayey sands. Review of the Quaternary Geologic Map of the Newport Beach 7.5- minute quadrangle (CGS, 2006) indicates that the Site is underlain by young alluvium (Qya) deposits.

3.3 Groundwater Conditions
Groundwater was encountered at depths ranging between approximately 8 to 16.5 ft bgs during Geosyntec (2021) field investigation. However, due to proximity to the ocean, water level is anticipated to exhibit muted fluctuation with the tides.

Based on the review of the Seismic Hazard Zone Report for the Anaheim and Newport Beach 7.5- Minute Quadrangles, Orange County, California [California Geological Survey (CGS), 2006], the historically highest groundwater level at the vicinity of the Site is approximately 3 ft bgs.

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4. GEOHAZARDS
This section contains a description and evaluation of potential geologic and seismic hazards such as fault rupture, strong ground shaking, liquefaction, etc. based the understanding of site conditions described in Section 3 and a review of relevant publicly available information.

4.1 Strong Ground Shaking and Design Ground Motions
The Site is situated within a seismically active Southern California region and will like ly experience moderate to severe ground shaking in response to a large magnitude earthquake occurring on a local or more distant active fault during the lifespan of the proposed facility. As a result, seismically induced ground shaking in response to an ea rthquake occurring on a nearby active fault, such as the Newport Inglewood fault zone located to the northeast of the Site , is considered to be the major geologic hazard affecting the project. Other active faults in the vicinity and their respective distances from the Site and the representative maximum Moment Magnitudes, as obtained from the 2013 Caltrans Fault database are summarized in Table 2 below.

Table 2 – Nearby Active Faults
Fault Name Distance and Direction
from Site
Maximum Moment
Magnitude
Newport Inglewood fault zone (S. Los Angeles
Basin section) About 1.2 miles to northeast 7.2
Thums-Huntington Beach (northern) About 1.3 miles to west 6.6 San Joaquin Hills About 3.8 miles to northeast 7.0
Compton About 5.5 miles to northwest 6.9
Anaheim About 8.8 miles to northwest 6.4
The seismic design parameters for the project were established in accordance with ASCE 7 -16, Chapter 11, for Site Class D (Default). Mapped ground motion parameters SS and S1 were obtained using the ASCE 7 Hazard Tool (https://asce7hazardtool.online/). The output from the web tool is included in Appendix D. The seismic design parameters are summarized in Table 3.

Note that ASCE 7-16, Section 11.4.8, requires that sites classified as Site Class D with an S1 greater than or equal to 0.2 perform a site-specific ground motion hazard analysis. Although the Site meets the criteria for this requirement, a site-specific ground motion hazard analysis was not performed, which is permitte d per Exception #2 in ASCE 7- 16 Section 11.4.8. This exception states that a ground motion hazard analysis is not required provided that the value of the seismic response coefficient Cs is determined by Eq. (12.8-2) for values of T ≤ 1.5T s and taken as equal to 1.5 times
the value computed in accordance with either Eq. (12.8-3) for TL ≥ T > 1.5Ts or Eq. (12.8-4) for T

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> TL. This approach to computation of the seismic response coefficient Cs, should be implemented by the structural engineer.

Table 3 – Design Ground Motion Parameters
Parameter Value
Approximate Site Latitude 33.652693 degrees
Approximate Site Longitude -117.9721 degrees
Site Class D - Default
Mapped Short Period Spectral Response Acceleration, Ss 1.391 g Mapped 1-second Spectral Response Acceleration, S1 0.502 g Short Period Site coefficient (at 0.2-s period), Fa 1.2 Long Period Site coefficient (at 1.0-s period), Fv 1.8 (a) Site-modified Short Period Spectral Response Acceleration, SMS 1.67 g Site-modified 1-second Spectral Response Acceleration, SM1 0.904 g (a) Design Short Period Spectral Response Acceleration, SDS 1.113 g Design 1-second Spectral Response Acceleration, SD1 0.602 g (a) Long Period Transition 8 s
Mapped MCEG Peak Ground Acceleration, PGA 0.606 g
Site Coefficient, FPGA 1.2
Site Class Adjusted MCEG Peak Ground Acceleration, PGAM 0.728 g Design Moment Magnitude 6.8
Notes:
a. See the commentary in ASCE/SEI 7-16, Section 11.4.8 “Exception note” 2.

4.2 Liquefaction
Seismically induced soil liquefaction can be described as a significant loss of strength and stiffness due to cyclic pore water pressure generation from seismic shaking or other large cyclic loading.

The material types considered most susceptible to liquefaction are saturated, loose - to medium- dense granular soils and low-plasticity, fine-grained soils. Manifestations of soil liquefaction can include the loss of bearing capacity below foundations, surface settlements and tilting in leve l ground, and instabilities in areas of sloping ground. Soil liquefaction can also result in increased lateral and uplift pressures on buried structures. Lightweight or unrestrained buried structures may float upward to the ground surface during a liquefaction event.

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Based on the review of the Seismic Hazard Zones Official Map for Newport Beach Quadrangle (CGS, 1997), the Site is located within the areas identified as potential liquefaction zone. However, given the site use and proposed improvement types, no liquefaction mitigation improvements are recommended.

4.3 Lateral Spreading
When liquefaction occurs, sloping ground or level ground near a steep slope or vertical face can potentially move as a mass downslope or towards the steep slope/vertical face, applying lateral forces to structures and their foundations, and potentially imposing large deformations.

Given the absence of a steel slope or vertical face, lateral spreading is not believed to pose a significant hazard to the proposed improvements.

4.4 Fault Surface Rupture
Fault surface rupture refers to the offset that occurs in the ground during an earthquake as a result of the relative movement of the ground on both sides of a fault. When that offset reaches the ground surface, either because the fault extend s to the surface or because the offset propagates from the fault at depth through overlying soil to the surface, it is referred to as surface fault rupture. A review of published geologic data and the locations of fault -rupture hazard zones in Southern California did not indicate the presence of any active or potentially active faults crossing on or projecting towards the proposed improvements . The nearest identified fault zone is located approximately 1.2 miles to the northeast from the Site. Based on the above discussion, fault rupture is not believed to pose a hazard to the proposed improvements.

4.5 Other Geologic Hazards
Other geologic hazards, including land sliding, tsunami, and volcanic activity, are not considered to be significant hazards, given the geologic and topographic setting of the Site, and are not likely to pose an impact to the proposed improvements.

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5. GEOTECHNICAL ENGINEERING ASSESSMENTS AND

RECOMMENDATIONS

5.1 General
The preliminary recommendation provided here in assume that the proposed structures will generally be placed outside the identified limits of the w aste, as shown on the draft conceptual plans prepared by RJM (Figure 2). Based on our understanding of site conditions, it is our opinion that the proposed improvements as shown in the draft conceptual plan are feasible from the geotechnical perspective provided that the recommendations outlined in this report are implemented in the design and construction.

5.2 Earthwork and Grading
Earthwork should be performed in accordance with the geotechnical recommendations of this report, the project specifications, applicable sections of the California Building Code (20 22), applicable Orange County grading regulations, the current version of the Standard Specifications for Public Works Construction “Greenbook,” as well as California Occupational Safety and Health Administration (Cal OSHA) safety requirements.

Earthwork at the Site is expected to include minor grading to achieve the planned vertical grades, subgrade preparation, limited excavations for foundations , and potential retaining wall backfill.

Since the proposed park structures are generally expected to be outside the delineated limits of the waste, it is expected that the earthwork and grading activities will generally not include waste excavation. However, limited partial waste excavation may be needed , if encountered during construction, particularly near the identi fied limits of the waste . Geosyntec recommends that earthwork be performed under the observation and testing of an experienced geotechnical landfill engineer to help further identify the limits of potential waste materials and limit the volume of potential waste excavation.

In addition, proposed grading work should avoid as much as possible disturbance to the existing oil wells at the Site. Grading work that might require adjustment to oil well height/depth can be considered “Re- entry into the well” which may trigger the need for potentially costly re - abandonment of the affected wells to current California Geologic Energy Management Division (CalGEM) Standards. Geosyntec recommends that limi ted excavation be performed at the geophysical survey inferred locations of the oil wells to physically confirm the well locations during detailed design phase of the project.

5.2.1 Subgrade Preparation and Overexcavation
The grading areas should be cleared of debris, and organic or deleterious materials. Such materials should be removed and properly disposed off -site. Abandoned underground utilities (if

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encountered) should either be excavated and the trench properly backfilled or the pipe filled with two-sack sand-cement slurry.

Existing subgrade material should be overexcavated to a minimum depth of 12 inches below the bottom of proposed concrete slab or below the bottom of footings and replaced with engineered fill. The horizontal limits of removal excavation should extend at least 2 ft beyond the outer edge of concrete slabs.

The bottoms of excavations /footings should be scarified to a depth of 8 inches, moisture conditioned between 1 and 3 percent above optimum moisture content, and compacted to at least 90 percent of the maximum dry density as determined by ASTM D1557.

Excavation beyond the above requirements may be needed if waste or other unsuitable materials are encountered and replaced with engineered fill, as directed by the geotechnical engineer.

5.2.2 Fill and Backfill
Fill soils should possess:

1. At least 40% material less than ¼-inch in size;

2. A maximum size in the largest dimension of 3 inches;

3. Less than 50% of fines content passing sieve No. 200;

4. A plasticity index of less than 15 and a liquid limit of less than 40;

5. An expansion index (ASTM D4829) of less than 20 for materials placed within 5 feet of retaining walls, and an expansion index of less than 50 for other fill areas; and

6. No perishable, organic, deleterious, or otherwise unsuitable material.

The project geotechnical engineer should review and evaluate the proposed fill materials before their use.

Fill and backfill material should be placed in loose lifts no thicker than 8 inches, moisture conditioned, and processed as necessary to achieve unif orm moisture content at 0 to 3 percent above the optimum moisture content. Each lift should be compacted to not less than 90 percent relative compaction. Relative compaction is defined as the ratio of the in -place dry density to the theoretical laboratory maximum dry density, using ASTM D1557 as the compaction standard. The in-place dry density and moisture content should be determined in accordance with ASTM D6938 or ASTM D1556 at a frequency as determined by the qualified geotechnical representative responsible for quality assurance during construction.

5.2.3 Surface Drainage
Surface drainage should be planned to prevent ponding and promote the drainage of surface water away from the concrete slabs/flatworks and towards suitable collection and discharge facilities.

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Paved areas should be sloped to drain water away from structures and flatwork at a minimum gradient of 1 percent, and unpaved areas should be finish graded with a minimum slope of 2 percent away from the concrete slabs.

Additionally, for proposed landscaped areas and park facilities developed above the known waste limit, the amount of irrigation should be limited/minimized as much possible since moisture infiltration can accelerate the rate and increase the overall magnitude of settlement in waste. This may be achieved through the use of smart irrigation systems that limit the amount of water or use of vegetation types that can sustain with little water to minimize the infiltration of water into the waste material. Furthermore, proper positive drainage should be implemented and maintained to reduce potential ponding.

5.3 Shallow Foundation Recommendations
Shallow foundations, such as spread and continuous footings are suitable to support the proposed structures at the Site as shown in the draft conceptual plans prepared by RJM dated 25 July 2023 (Figure 2).

Allowable bearing pressure of 2,000 psf can be used for the foundations with a minimum width of 2 ft and minimum embedment of 2 ft. The allowable bearing capacity can be increased by one - third for short term wind or earthquake loading conditions.

Resistance to lateral loads may be provided by passive resistance along the outside face of the foundation and frictional resistance along the bottom of concrete. For allowable passive resistance, an equivalent fluid weight of 150 pounds per cubic foot (pcf) can be used for design of foundations.

Passive resistance of the top 1 ft of soil should be neglected unless the grade next to the foundation is paved. If friction is used to resist lateral loads, a coefficient of 0.25 between soil and foundation concrete can be used.

Total and differential settlements of foundations are expected to be in tolerable ranges if recommendations provided in this report are implemented . Total settlement is not expected to exceed one inch, while differential settlements between footings are expected not to exceed approximately one-half inch.

A unit modulus of subgrade reaction for compacted subgrade can be assumed as 150 pci. The recommended value is valid for a unit area of one square foot. For larger loading areas, the modulus of subgrade reaction can be estimated by the following equation:
k
B = k1 [ (B + 1) / (2 B) ]2
where B is the width of effective soil reaction area in ft, and k1 is the unit modulus of subgrade reaction.

SC1369\FINAL Geotechnical Report - Edison Park Improvements 15 11/30/2023

5.4 Slabs-On-Grade
Conventional concrete slabs -on-grade may be used for the hardscape at the Site. Subgrade soils supporting the slab should be prepared as recommended in Section 5.2.1. At the time of concre te pour, the subgrade soils should be firm and relatively unyielding. Significant local loads are not expected in these slabs, as they are not expected to serve as structural slabs.

The concrete slabs-on-grade thickness and steel reinforcement should be properly designed by the project structural engineer for the anticipated floor loads and other structural considerations. Crack control or expansion/contraction joints should be provided at spacing appropriate for the slab thickness.

Concrete slabs should be underlain by a minimum of 4 inches of compacted clean, coarse sand or aggregate. Special care should be taken by the contractor so that a uniform thickness of sand is maintained to achieve uniformity in the concrete thickness for the slab. Geosyntec recom mends that the subgrade soils be wetted prior to placement of the sand or aggregate beneath the slab.

5.5 Lateral Earth Pressures for Retaining Walls
In general, retaining walls should be designed to resist earth pressures, surcharge loads, and anticipated hydrostatic pressure.

The lateral earth pressure used in design of the cantilever retaining wall should include a triangular distribution with an equivalent fluid weight of 40 pcf.

Surcharge pressures (dead or live) should be added to the above lateral earth pressures where surcharge loads may be located above or adjacent to the wall. Surcharge pressures should be applied as a uniform rectangular pressure distribution by using a lateral earth pressure coefficient of 0.33 for cantilever walls. Surcharges that are set back behind the wall a horizontal distance greater than the wall height need not be included in the design pressure. A uniform vertical surcharge pressure of 300 psf may be used to simulate traffic loads.

The lateral earth pressures recommended abo ve are based upon the assumption that the grade behind the walls is level and the wall backfill is well-drained to prevent the buildup of hydrostatic pressure behind the wall. Lateral earth pressures on walls for specific wall heights, unique surcharge conditions, or other conditions not described herein can be developed once details and construction procedures are available.

5.6 Construction Observation and Considerations
We recommended that a representative from Geosyntec as the Geotechnical Engineer of Record with experience in landfill engineering review the subsurface conditions as they are exposed during construction, observe, and assess the site preparation and earthwork construction, observe the

SC1369\FINAL Geotechnical Report - Edison Park Improvements 16 11/30/2023
materials exposed in excavations, and assess whether subsurface conditions encountered throughout the site deviate significantly from those used as a basis for development of the recommendations contained herein. The Geotechnical Engineer of Record shall alert all parties of any unsuitable conditions related to the aspects discussed in this report.

Based on the field observations, additional recommendations may be provided regarding the suitability of soil and other materials for compaction, import soil, etc.

It is recommended that the Geotechnical Engineer of Record maintain a full-time on-site presence for construction quality assurance (CQA) during earthwork operations such as footing excavations and fill placement.

SC1369\FINAL Geotechnical Report - Edison Park Improvements 17 11/30/2023

6. LIMITATIONS
This report was prepared exclusively for use by City of Huntington Beach, in support of the proposed improvements at Edison Park. The report is not intended to be suitable for reuse on extensions or modifications of the project or for use on any project other than the currently proposed development, as it may not contain suf ficient or appropriate information for such uses.

If this report or portions of this report are provided to contractors or included in specifications, it should be understood that they are provided for information only.

Subsurface deposits may vary in type , strength, and many other important properties between points of exploration due to non-uniformity of the geologic formations or to man-made cut and fill operations. While we cannot evaluate the consistency of the properties of materials in areas not explored, the conclusions drawn in this report are based on the assumption that the data obtained in the field are reasonably representative of field conditions and are conducive to interpolation and extrapolation.

Our investigation and evaluations were perfor med using generally accepted engineering approaches and principles available at this time and the degree of care and skill ordinarily exercised under similar circumstances by reputable Geotechnical Engineers practicing in this area. No other representation, either expressed or implied, is included or intended in our report.

SC1369\FINAL Geotechnical Report - Edison Park Improvements 18 11/30/2023

7. REFERENCES
American Society for Testing and Materials, 2020. Annual Book of ASTM Standards. Section 4 Construction, Volume 04.08 Soil and Rock.

CGS (1997). Seismic Hazard Zones Official Map for Newport Beach Quadrangle.

CGS (20 06). Seismic Hazard Zone Report for the Anaheim and Newport Beach 7.5- Minute Quadrangles, Orange County, California.

Geosyntec (2010). Construction Quality Assurance Report, Landfill Gas Collection and Control System Construction, Cannery Street Former Refuse Disposal Station, Huntington Beach, California, prepared by Geosyntec Consultants, Inc. dated March 2010.

Geosyntec (2018). Draft Feasibility Study for Edison Park Settlement Related Damage Repair , Geosyntec Consultants, Inc., October 3, 2018.

Geosyntec (2021). Focused Area Waste Limit/Depth Evaluation, Edison Park, Huntington Beach, California, prepared by Geosyntec Consultants, Inc. dated June 2021.

Geosyntec (2023). Letter Report – Geophysical Oil Well Locating Survey, Edison Park, Huntington Beach, California, prepared by Geosyntec Consultants, Inc. dated July 2023. “Greenbook,” Standard Specifications for Public Works Construction, 2021 Edition.

The Earth Technology Corporation (TETC) (1990). Report, Solid Waste Assessment Test, Cannery Street Disposal Station, Huntington Beach, California.

TRC (2001). Environmental Site Assessment Report, Former Cannery Street Refuse Disposal Station, prepared for the County of Orange Integrated Waste Management Department.

January.

TABLE

Table 1. Summary of Findings and Preliminary Recommendation from Geosyntec’s Review of Edison Park Draft Conceptual Plan Prepared by RJM dated 25 July 2023 Item
No.

Proposed Improvement/ Existing
Features
Within waste limit?
(Yes/No) Description Notes/Comments Preliminary Recommendations 1 Reconfigured parking lot with new entry at
Edison H.S. intersection. (Total Parking
Spaces +/- 250)
No (However, in close proximity to
inferred locations of Oil Wells #1
and #2)
Conceptual plans show notch
around the oil well #1 for the
proposed parking areas.

Placing a parking lot over the oil wells is generally not expected to impede access to the oil wells. However, care must be taken to not disturb the oil wells by grading
activities.

Please note: proposed grading work should avoid as
much as possible disturbance to the existing
“plugged” oil wells. Grading work that might require
adjustment to well height/depth can be considered
“Re-entry into the well” which may trigger the need
for costly re-abandonment of the affected wells to
current CalGEM Standards. In addition to cost
implications, this can also result in significant delay.

Recommends the following:
1) Perform limited excavation at the locations
marked by geophysical survey for
confirmation and survey of actual well
locations during detail design phase of the
project.
2) Adjust, as/if needed, the extent of the
proposed parking reconfiguration to be
compatible with the actual oil well
location(s).

2 New parking lot entry at Poston Lane. No Similar comments as Item No. 1 Similar recommendations as Item No. 1 3 New sport court plaza with seating and
shade. No n/a n/a n/a
4 New full court basketball court (4). No n/a n/a n/a
5 New half-court basketball court (4). No n/a n/a n/a
6 New tennis courts (2). No
Concrete slabs with potential
penetrations for tennis nets and
ball containment chain link
fencing
While the tennis court is outside the shown limits of waste, the western edge of the tennis courts is in close proximity to the edge of the waste which may result in localized surface cracking/distress.

Limited partial waste excavation maybe required.

Potential impact is anticipated to be not significant,
and limit/volume of waste excavation can be
adjusted in the field during construction, if
encountered.
7 New practice hitting wall (4). No n/a n/a n/a
8 New picnic tables. No n/a n/a n/a
9 Dual use courts (2 tennis with 8
pickleball). No n/a n/a n/a
10 Existing tennis courts (#3 and #4)
converted to pickleball courts (8). Yes
Concrete slabs with potential
penetrations for pickleball nets
and ball containment chain
link fencing.

Southern half of the existing
tennis courts to be removed
and may salvage the northern
half.

Entirely within the waste limits and on top of thick portion of waste which may result in significant total and
differential settlements.

Northern half of the tennis courts may be salvageable but suggest taking a closer look to assess its current condition.

Suggest one of the following:
1) Partial waste removal and off-site disposal of
waste and placement of engineered fill prior
to construction of the proposed pickleball
court. [This option is possible but could add
cost to the project]
2) Place the proposed courts on deep
foundation system capable to transferring the
load to competent soil layer below the
existing waste. [This option is possible but
n/a: not applicable
Item
No.

Proposed Improvement/ Existing
Features
Within waste limit?
(Yes/No) Description Notes/Comments Preliminary Recommendations potentially costly and with added
complexity]
Alternatively, if the above two options are not
feasible, the proposed pickleball courts can be
constructed with the understanding that the
performance of the concrete slab will be affected by
differential settlement and extensive
repair/maintenance and/or replacement of the
proposed courts will be required.
11 Reconfigured walkways. No n/a n/a n/a
12 Existing trees. Yes n/a n/a n/a
13 New trees. No n/a n/a n/a
14 New shade shelter No n/a n/a n/a
15 Existing softball fields. Yes Periodic corrective regrading work might be required. This type of park amenities can tolerate settlement and considered compatible for sites with waste layer.
16 Existing SCE Towers and overhead utility
lines. No n/a n/a n/a
17 Expanded exterior restrooms at
Community Center. No n/a n/a n/a
18 Existing walkways. Yes Concrete surface
If the existing walkways are being replaced,
recommend using surfaces that are more tolerant to
differential settlement such as flexible pavers.

Concrete surfaces are prone to cracking from
potential settlement and can result in uneven walking
surfaces.
19 New U10 (50yds x 70yds) soccer field
overlay in SCE Corridor (pending SCE
review and approval).

No n/a n/a n/a
20 New U14 (60yds x 70yds) soccer field
overlay in SCE Corridor (pending SCE
review and approval).

No n/a n/a n/a
21 Enlarged plaza all-wheels Partially Yes
Concrete features proposed to
be constructed on existing
concrete slab with no
intrusion/penetration below the
existing slab within the limits
of waste, some potential for
penetration outside the waste
limits
Proposed all-wheels plaza straddles between the waste and native soils; however, this feature is generally considered to be compatible with the site characteristics.

Suggest one of the following:
1) Perform selected repair of the existing
concrete slab if needed, especially in the
older sections of concrete that has shown
signs of distress/cracks.
2) Remove the existing concrete slab and
replace with new slab with potential for
limited waste removal.
22 New Play Area with rubber surfacing,
equipment, and shade. No n/a n/a n/a
23 New pump track. No n/a n/a n/a
24 Landfill monitoring station No Existing landfill gas management/blower system Need to be protected in place Suggest vegetation screen for enhanced aesthetics of the area
25 Oil Well #1 No n/a n/a n/a
26 Oil Well #2 No n/a n/a n/a

FIGURES

0 3,000

SCALE IN FEET
BASEMAP SOURCE: CITY OF HUNTINGTON BEACH,

COUNTY OF LOS ANGELES, CALIFORNIA STATE PARKS,

ESRI, HERE, GARMIN, SAFEGRAPH, GEOTECHNOLOGIES,
INC., METI/NASA, USGS, BUREAU OF LAND
MANAGEMENT, EPA, NPS, USDA.

N
SITE
PROJECT NO:

FIGURE
N:\CACADD\E\EDISION PARK\EDISON PARK-SC1369\FIGURES\SC1369F002 - Last Saved By: KViswanathan on 9/13/23

SITE LOCATION MAP

EDISON PARK - PROPOSED

IMPROVEMENTS

HUNTINGTON BEACH, CALIFORNIA
NOVEMBER 2023
1 SC1369

DRAFT CONCEPTUAL PLAN BY RJM

EDISON PARK - PROPOSED IMPROVEMENTS

HUNTINGTON BEACH, CALIFORNIA
NOVEMBER 2023
FIGURE
2PROJECT NO: SC1369
\\orangecounty-01\DATA\PRJ4\CAWP\SC1369 - Edison Park Geotech Support\08 Geotechnical Report\Figures\Figure 2 - Conceptual Plan by RJM.pptx DRAFT

WASTE SETTLEMENT ESTIMATES
EDISON PARK – PROPOSED IMPROVEMENTS

HUNTINGTON BEACH, CALIFORNIA
NOVEMBER 2023
FIGURE
3PROJECT NO: SC1369
\\orangecounty-01\DATA\PRJ4\CAWP\SC1369 - Edison Park Geotech Support\08 Geotechnical Report\Figures\Figure 3 - Waste Settlement Estimates.pptx 0 5
10 15
20 25
30 0 5 10 15 20

SETTLEMENT (INCHES)

TIME (YEARS)
Fill = 0
Fill = 0.5 ft
Fill = 1 ft
Note:

Waste settlement estimates from Geosyntec (2018) Feasibility Study for Edison Park Settlement Related Damage Repair
G G G

GGGGGGG
GGGGG
GG
GGG
GEOSYNTEC (2021)

INVESTIGATION AREA

HAMILTON STREET

MAGNOLIA STREET

EXISTING BASKETBALL COURT

EDISON COMMUNITY CENTER

OUTDOOR RACQUETBALL COURT

SOFTBALL FIELD

EXISTING TENNIS COURTS

SKATE PARK
FIRE STATION #4

APPROXIMATE LIMITS OF EXISTING CANNERY

STREET FORMER REFUSE DISPOSAL STATION
WASTE [TRC, 2001]

CHILDREN'S PLAY AREA
TP-1
TP-2
TP-3
TP-4
TP-5
TP-5A
HSA-2A
HSA-1
HSA-2
HSA-3HSA-4
HSA-5
HSA-3A
HSA-6A
HSA-5A
HSA-4A
HSA-7A HSA-8A
Aldrich Fee #1
Aldrich #2
GEOSYNTEC (2020)

INVESTIGATION AREA

LANDFILL GAS

BLOWER STATION
0 150

SCALE IN FEET
N

BORINGS PERFORMED TO DETERMINE
DEPTH OF WASTE (GEOSYNTEC, 2020)

EXPLORATORY TEST PITS PERFORMED
(GEOSYNTEC, 2020)

BORINGS PERFORMED TO DETERMINE
DEPTH OF WASTE (GEOSYNTEC, 2021)

INTERPRETED LOCATION OF OIL WELL

FROM GEOPHYSICAL OIL WELL LOCATING
SURVEY (GEOSYNTEC, 2023)
GEOSYNTEC (2020) INVESTIGATION AREA
GEOSYNTEC (2021) INVESTIGATION AREA

EXISTING BURIED LFG HEADER PIPE

LATERAL LIMITS OF WASTE MATERIAL
DELINATED DURING GEOSYNTEC 2020
AND 2021 EXPLORATIONS
LEGEND
G
PROJECT NO:

FIGURE
N:\CACADD\E\EDISION PARK\EDISON PARK-SC1369\FIGURES\SC1369F003 - Last Saved by: KViswanathan on 9/14/23

EXISTING CONDITIONS AND FIELD

INVESTIGATION LOCATIONS

EDISON PARK PROPOSED IMPROVEMNTS

HUNTINGTON BEACH, CALIFORNIA
NOVEMBER 2023
4 SC1369
AERIAL BACKGROUND IMAGERY: © 2023
NEARMAP.

APPENDIX A

GEOSYNTEC (2021) WASTE DELINEATION REPORT

2100 Main Street, Suite 150
Huntington Beach, California 92648
PH 714.969.0800
FAX 714.969.0820
www.geosyntec.com
HL1685B\Edison Park Waste Delineation Final Report

June 7, 2021

Farhad Bolourchi, MSCE
Project Coordinator - Development Division
Community Service Department - City of Huntington Beach 2000 Main Street
Huntington Beach, California 92648
Subject: Focused Area Waste Limit/Depth Evaluation
Edison Park, Huntington Beach, California

INTRODUCTION
At the request of City of Huntington Beach, Community Services Department (City) , Geosyntec Consultants Inc. (Geosyntec) has prepared this letter report documenting the results of limited subsurface investigation s to evaluate the approximate lateral limit(s) and depth(s) of existing waste along a selected portion of the eastern edge of the former Canary Street Refuse Disposal Station (Landfill) at Edison Park (hereafter Site). The requested area for waste delineation at the Site is shown on Figure 1 as it was provided to Geosyntec by the City in January 2019. The objective of the scope of work performed by Geosyntec was to collect field data to support the City in its evaluation of potential locations/types of proposed facilities/amenities at the Site.

BACKGROUND
Edison Park was constructed over the Cannery Street Former Refuse Disposal Station, also previously known as Cannery Street Landfill (CSL) in early 1970s. The CSL is approximately 27.5 acres, located in the City of Huntington Beach at the northwest corner of the intersection of Magnolia Street and Hamilton Avenue. The site’s formal address is 21379 Magnolia Street, Huntington Beach, California 92647.

Some of the existing facilities /amenities at the Site are constructed on top of waste material deposited at the former CSL. Settlement, differential settlement, and potential sinkholes are typically expected to occur at facilities constructed on top of waste. The effect of settlement, differential settlement and/or a combination of both are observed at the existing tennis courts, sidewalks, open park areas and other hardscape /amenities at the Site. However, the surface expression of settlement /differential settlement is more pronounced in the vicinity of the Tennis courts potentially limiting the functionality and aesthetics of the Tennis courts.

Edison Park Waste Delineation
June 7, 2021

HL1685B\Edison Park Waste Delineation Final Report
In 2018, the City retained Geosyntec to prepare a feasibility study to evaluate several alternatives for repairing or reconstructing settlement related damage to the existing park and recreational areas at the Site [Geosyntec, 2018].

Geosyntec performed two site investigations for this project – the first investigation was performed between in November 2020 in the landscaped areas within the requested focus area and the second investigation was conducted on March 2021 in the areas of the park within the focus area currently under concrete slab.

PRE-FIELD INVESTIGATION ACTIVITIES
Geosyntec prepare d a Site-specific Task Hazard Analysis (THA) that identified S ite conditions, potential hazards, hazard control, monitoring procedures, personal protective equipment, and emergency procedures. Prior to field investigations, Geosyntec notified Underground Service Alert (USA) of southern California to mark and clear utilities in, and near to, the investigation focus area to reduce the potential for accidentally encountering buried utility lines. In addition, Geosyntec utilize d the services of GEOVision, Inc. to perform a limited geophysical survey of the investigation focus area (and other potential boring/test pit locations) to evaluate potential buried underground utilities/features prior to performing field investigations. Geosyntec also obtained permits to advance soil borings from the Orange County Health Care Agency, Environmental Health Division, required under Orange County Well Ordinance (County Ordinance No. 2607) [ Permit No. 20-08-22 and Permit No. 21-03-07]. The DigAlert ticket confirmations, field sketches provided by GEOVision and the soil boring permit s are included here in Appendix A.

Geosyntec had, under a previous authorization from the City, prepared and submitted to the South Coast Air Quality Management District (SCAQMD) the required permit application package in general compliance with Rule 1150 which included an Excavation Management Plan. The permit application, was submitted on April 30, 2019 and deemed complete on May 03, 2019 [Application Number: 612262]. The SCAQMD issued the permit on September 11, 2020. An SCAQMD permit was no t required for the second investigation. The permit issued by the SCAQMD for the first investigation and a copy of the Excavation Management Plan is included here in Appendix B.

Edison Park Waste Delineation
June 7, 2021

HL1685B\Edison Park Waste Delineation Final Report

FIELD INVESTIGATION
Test Pits
Five (5) exploratory test pits were logged between November 24 and November 25, 2020 by a Geosyntec engineer under the direction of a Professional Engineer licensed in the State of California to evaluate the approximate lateral limit(s) of the existing waste in the approximate areas shown on Figure 2A. The logs were prepared based on visual field observations of the exploratory test pits’ exposed side -wall and retrieved soil cuttings.

The logs include a general description of the encountered soils in accordance with the Unified Soil Classification System (USCS) and Standard Practice for Description and Identification of Soils (ASTM D2488) as well as a field sketch of the exploratory test pit wall showing interfaces of encountered materials. Geosyntec subcontract ed with American Integrated Services, Inc. (AIS) to excavate and backfill the exploratory test pits using a standard backhoe.

The proposed exploratory test pits commenced at the approximate waste limit estimated by TRC [2001] as shown on Figure 1. The exploratory test pits were advanced to an approximate depth of 5 feet vertically and horizontally until existing waste limits are visually observed. Once waste wa s encountered in the exploratory test pit, efforts were made to reduce the excavation of additional material. Waste materials were not, to the extent practical, removed from the excavation. The exploratory test pits were generally advanced until waste material was encountered or until an obstruction such as surface concrete or other infrastructure wa s reached. Plastic tarps were placed with plyw ood sheeting to temporarily stage the test pit spoils during the excavation. Additionally, approximately 10 ft by 20 ft fence panels with windscreen attached were used to serve as a work exclusion area and visual barrier on three sides . Existing grass and topsoil were segregated from the exploratory test pits and replaced after backfilling the test pits directly with the materials excavated from the test pits. Backfill material was compacted in place to help provide unyielding condition using a roller attached to the end of the backhoe, however, density or moisture testing was not performed and/or required. Test pit logs are provided here in Appendix C.

Test pits were first advanced vertically until the waste material was encountered, and then advanced horizontally in an eastward direction to determine the lateral limit of the waste.

The thickness of the soil overlying the waste were generally observed to range between 2 ft to 3.5 ft below the ground surface (bgs). Waste material was encountered at the five exploratory test pits (TP-1 through TP -5). Lateral limit of waste was delineated at test pits TP-1 and TP-2; however, the lateral limit of waste could not be identified at test pits

Edison Park Waste Delineation
June 7, 2021

HL1685B\Edison Park Waste Delineation Final Report
TP-3, TP-4, and TP -5. The approximate lateral limits of the waste as observed by the exploratory test pits are indicated in Figures 2 A and 2B . A summary of test pit dimensions, thickness of the soil layer/depth to the top of waste is presented in Table 1.

Table 1: Summary of Test Pits
Test Pit ID Width (ft) Length (ft) Soil layer thickness/ Depth to Top of Waste (ft bgs)
Total Depth
(ft bgs)
TP-1 3.5 19.5 3.0 4.5
TP-2 3.5 8.0 2.0 2.5
TP-3 3.5 21.5 3.0 3.5
TP-4 3.5 - 7.5 15.0 3.0 4.0
TP-5 3.5 45.0 2.0 2.5 - 4
TP-5A 3.5 6.0 2.0 3.5
Hollow-Stem Auger Borings
ABC Livion Drilling, Inc, working as a drilling subcontractor to Geosyntec advanced five (5) hollow-stem auger (H SA) borings on October 28, 2020 in the landscape areas and seven (7) HSA borings on March 12, 2021 in the concrete covered areas. The purpose of the HSA borings was to estimate the thickness of the existing waste layer at the approximate locations shown on Figures 2A and 2B. The HSA borings advanced near the estimated lateral limits of waste ( i.e., HSA-1 through HSA-3) started approximately 5 to 10 feet to the west of waste limit as observed by the exploratory test pits. The purpose of these HSA borings (i.e., HSA-1 through HSA-3) was to evaluate the depth of waste at or near the lateral limits of waste as observed by field measurements from the exploratory test pits. The objective of the HSA borings advanced near the Tennis Court (i.e., HSA-4 and HSA-5) was to estimate the depth of existing waste in the vicinity of the Tennis Court area. The objective of HSA-2A through HSA-8A was to confirm if waste is present under the existing concrete slab and determine its depth, if present. Borehole logs for the HSA borings are provided in Appendix D.

Each boring was logged by Geosyntec field engineer and include s a description of the encountered soils performed in general accordance with the USCS and Standard Practice for Description and Identification of Soils (ASTM D2488). Soil samples were collected from the HSA borings for logging and visual identification purposes, but no samples were retained for laboratory testing. Split-spoon samples were performed generally on the soil

Edison Park Waste Delineation
June 7, 2021

HL1685B\Edison Park Waste Delineation Final Report
material encountered at the bottom of the boreholes to estimate the depth of waste. Each boring was advanced to a minimum of 1 foot below the bottom of the waste material, or until refusal, to visually assess that bottom of waste was reached. The HSA borings were backfilled with hydrated bentonite chips and the upper six inches with topsoil. The cuttings were containerized in 55-gallon drums, stored on-Site pending waste profiling, and disposed off-Site by AIS under waste manifest. Groundwater levels encountered in the HSA borings were recorded using a water level indicator. The depths to encountered groundwater at each of the HSA are listed in Table 2.

The thickness of the soil overlying the waste material, as observed from the HSA borings were found to range between 2 ft to 3.5 ft bgs. Borings HSA-4 and HSA-5 were advanced to depths of 34 ft and 41.5 ft bgs, respectively. Borings HSA-1, HSA-2, and HSA-3 were advanced to depths of 11.5 ft, 16.5 ft, and 21.5 ft bgs, respectively. HSA- 2A through HSA-8A were advanced to depths that ranged from about 16.5 to 18 feet. The depths of groundwater encountered in the landscape HSA borings (HSA -1 through HSA -5 performed) were observed to range between 8 and 12 ft bgs. The depths of groundwater encountered in borings (HSA -3A through HSA -5A, HSA- 7A and HSA -8A) were observed to range between 12.5 and 16.5 ft bgs. Groundwater was not encountered at borings HSA-2A and HSA-6A. The depth of waste was identified in the HSA borings where waste was encountered except HSA -4, which hit refusal at a depth of 34 ft bgs before reaching the bottom of the waste. A summary of the HSA borings including the depth/thickness of the soil layer and waste, and the depth to groundwater is presented in Table 2.

Table 2: Summary of HSA Borings
Boring ID
Soil layer
thickness/ Depth
to Top of Waste
(ft bgs)
Depth to
bottom of
Waste (ft)
Waste
Thickness
(ft)
Total
Depth
(ft bgs)
Depth to
Groundwater (ft
bgs)
HSA-1 3.5 10.5 7.0 11.5 10.5
HSA-2 2.5 15.5 13.0 16.5 12.5
HSA-3 2.5 20.5 18.0 21.5 11.0
HSA-4 2.0 − >32.0 34.0 8.0
HSA-5 2.5 40.5 38.0 41.5 12.0
HSA-2A* 3.0* 10* 7.0* 16.5 Not observed
HSA-3A* 2.5* 10* 7.5* 16.5 15

Edison Park Waste Delineation
June 7, 2021

HL1685B\Edison Park Waste Delineation Final Report
Boring ID
Soil layer
thickness/ Depth
to Top of Waste
(ft bgs)
Depth to
bottom of
Waste (ft)
Waste
Thickness
(ft)
Total
Depth
(ft bgs)
Depth to
Groundwater (ft
bgs)
HSA-4A* 2.5* 5* 2.5* 16.5 14.0
HSA-5A* 2.5* 15* 12.5* 17 16.5
HSA-6A* 2.5* 15* 12.5* 16.5 Not observed
HSA-7A* 3* 10* 7* 18 13.5
HSA-8A* 2.5* 11* 8.5* 16.5 12.5
*Soil materials encountered in this borehole contained slight traces of waste materials based on visual and odor field observations. No clearly defined waste layer was encountered in this borehole. Slight waste traces observed in this borehole may not be part of a continuous waste layer.

The approximate locations of the exploratory test pits and HSA borings were recorded using a hand-held global positioning system (GPS) unit.

Daily field reports with photo logs for the field investigation activities are included in Appendix E.

Air Monitoring
Geosyntec provided air monitoring services during the first field investigation phase of the project. The air monitoring was performed by Geosyntec in general accordance with the requirements of the SCAQMD Rule 1150. T he general prevailing wind direction at the site was typically onshore from the west-southwest to east-northeast. The upwind and downwind monitoring locations are shown on Figure 1.

In accordance with the requirements of the SCAQMD Rule 1150, the following air quality parameters were monitored:
• Particulate matter (dust) as PM 10 – PM10 monitoring will be performed using a DustTRAK DRX Handheld Aerosol monitor. Dust monitoring was conducted approximately every 60 minutes throughout the workday at the upwind and downwind monitoring locations. Action levels for dust at the monitoring locations was set in accordance with the SCAQMD Rule 1150 requirements at 0.05 mg/m3 above background. The recorded PM 10 levels were below the action level of

0.05 mg/m3 above background.
• Total Organic Compounds (TOCs) as methane – Continuous monitoring of TOC was conducted using an QRAE III monitoring equipment at the working face of

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June 7, 2021

HL1685B\Edison Park Waste Delineation Final Report
the excavation and at the downwind property monitoring location. The maximum sustained readings (greater than 15 seconds) were recorded at approximately every 15 minutes . Action levels for TOC readings at the excavation face and downwind property monitoring location was set at 500 ppmv and 200 ppmv, respectively, in accordance with the SCAQMD Rule 1150 requirements. The recorded TOC level were below the action levels at the monitoring locations. • Odor – Unusual odor or increase in odor was not detected by Geosyntec personnel during the test pit excavation or HSA drilling.
• Local Weather – Local weather parameters were monitored at approximately every 15 minutes throughout the workday. Ambient Temperature (℉), and Wind Direction were monitored digitally from the KCAHUNT143 weather station located in close proximity to the Site. Wind Speed (miles/hour) was measured using a handheld Kestrel 4000 monitoring device.

Daily air monitoring logs are provided in Appendix E.

FINDINGS
Waste Delineated
Lateral limits of waste was delineated at two test pit locations (TP-1 and TP-2). Figure 2 shows an approximate limit of waste as identified from the test pits . The approximate depths to the encountered waste layer at TP-1 and TP -2 were 3.5 ft bgs and 3 ft bgs, respectively.

Waste Not-Delineated
Waste was identified at three test pit locations (TP -3, TP -4, and TP -5); however, the lateral limit of waste was not identified. It is likely that the lateral limits of waste at these locations may extend eastward past the obstruction such as the concrete slab at TP-3 and TP-4, and concrete sidewalk at TP -5. The approximate depths to waste from existing surface at TP-3, TP-4, and TP-5 ranged between 2 to 3 ft bgs.

Waste Depth
The depths of waste at HSA borings near the estimated lateral limits of waste (HSA -1 through HSA-3) were found to range between 10.5 ft and 20.5 ft bgs. The depth of waste at HSA -5 near the northern edge of tennis court was observed to be approximately

40.5 ft bgs. The depth of waste at HSA-4 near the southern edge of the tennis court could not be identified due to refusal, however waste was still observed up to 34 ft bgs. The

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HL1685B\Edison Park Waste Delineation Final Report
depths of waste at the borings under concrete slab (HSA-2A through HSA -8A) were found to range between 5 ft and 15 ft bgs.

Waste and Soil Layer Characteristics
The soil layer at the Site was visually classified as silty sand (SM) in general accordance with ASTM D2 488. The thickness of the soil layer generally ranged between 2 to 3.5 ft bgs. The waste material encountered at the site generally composed of dark gray asphalt concrete deb ris and decayed wood pieces within the landscape areas and dark gr ay, medium to high plasticity clay soils, with trace debris and slight organic odor within the concrete slab areas . The waste materials did not have any unusual odor. The above characteristics of the waste material was consistent throughout the investigation locations.

Groundwater
Groundwater was encountered at all five HSA boring locations in the landscape areas and all but two HSA borings in the concrete slab areas. The depth to groundwater in the landscape borings generally ranged between 8 to 12 ft bgs. The depth to groundwater in the concrete slab borings generally ranged between 12.5 to 16.5 ft bgs except at HSA-2A and HSA-6A where groundwater was not encountered.

SUMMARY AND RECOMMENDATIONS
In general, existing waste limit was delineated along the Eastern limit of the CSL as identified by Test Pits (TP -1 and TP -2). However, the existing waste limit along the Southern Section of the Eastern limit of CSL was not delineated due the existing structures and/or concrete lined areas. Test Pits ( TP-3, TP-4 and TP -5) were advanced until the test pit encountered a structure and/or lined areas. Based on borings HSA -2A through HSA-8A, traces of waste material impeded within soil layer is present under the concrete slab within the focus area as shown in Figure 2B. However, the exact waste amount that maybe impeded in the soil layer located in areas under the concrete slab of the site is not known. Geosyntec recommends that field observations and monitoring services are performed by an experienced landfill engineer during the construction and/or excavation phase of the project to help further identify the limit of potential waste materials. Geosyntec also recommends that excavation and/construction activities in the areas described in this letter report are performed by a licensed Contractor with extensive experience in working in landfill environments. Proposed design features, amenities and structures should take into consideration the potential pr esence of waste materials in the areas described in this letter report. Furthermore, Geosyntec recommends that the design team for proposed structures and park amenities work closely with an experience landfill

Edison Park Waste Delineation
June 7, 2021

HL1685B\Edison Park Waste Delineation Final Report
engineer that can provide design input recommendation including but not limited to potential settlement, methane, drainage, irrigation and other design considerations.

LIMITATIONS
The conclusions and professional opinions pre sented in this letter report were prepared for the City of Huntington Beach in accordance with generally accepted geotechnical and landfill engineering principles and practices.

The subsurface conditions presented in this letter report are based on informa tion obtained from a limited number of exploratory test pits and HSA borings advanced to evaluate lateral limits and depths of the existing waste.

The data, conclusions, and recommendation contained herein should be considered only for this specific project and locations discussed in this letter report. Geosyntec is not responsible for any conclusions or recommendations that may be made by others, unless we have been given an opportunity to review such conclusions and/or recommendations and concur with them in writing. If any changes are made in the project as outlined in this letter report, the conclusions and/or recommendations contained in this letter report shall not be valid unless the changes are reviewed and the conclusions and/or recommendations of this letter report are modified or approved in writing by Geosyntec.

Edison Park Waste Delineation
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HL1685B\Edison Park Waste Delineation Final Report

CLOSURE
We appreciate the opportunity of assisting you on this important project. If you have any questions about this letter report, or require additional information, please do not hesitate to call the undersigned at (714) 969-0800.

Sincerely,

________________________________
Karthik Viswanathan, E.I.T.

Engineer

________________________________
Yonas B. Zemuy, P.E.

Principal Engineer

______________________________
Sneha Upadhyaya, Ph.D.

Senior Staff Engineer

Attachments:

Figure 1 – Site Plan
Figure 2a – Field Investigation Locations (North)
Figure 2b – Field Investigation Locations (South)
Appendix A – Soil Boring Permit, DigAlert Ticket Confirmations and Geophysical Utility Clearance Field Notes
Appendix B – SCAQMD Permit for Rule 1150
Appendix C – Test Pit Logs
Appendix D – Boring Logs with Key
Appendix E – Daily Field Reports
Appendix F – Air Monitoring Logs

Edison Park Waste Delineation
June 7, 2021

HL1685B\Edison Park Waste Delineation Final Report

REFERENCES
Geosyntec [2018], “Feasibility Study for Edison Park Settlement Related Damage Repair,” Geosyntec Consultants, Inc., October 3, 2018.

TRC [2001], “Environmental Site Assessment Report, Former Cannery Street Refuse Disposal Station,” prepared for the County of Orange Integrated Waste Management Department. January.

HL1685B\Edison Park Waste Delineation Final Report

Figures

GGGGGGGGGGGGGGGGGGGG CURRENT INVESTIGATIONAREA

HAMILTON STREET

MAGNOLIA STREET

EXISTING BASKETBALL COURT

EDISON COMMUNITY CENTER

OUTDOOR RACQUETBALL COURT

SOFTBALL FIELD

EXISTING TENNIS COURTS
PICNIC AREAFIRE STATION #4

EDISON HIGH SCHOOL
APPROXIMATE LIMITS OF EXISTING CANNERYSTREET FORMER REFUSE DISPOSAL STATIONWASTE [TRC, 2001]

CHILDREN'S PLAY AREA
TP-1TP-2TP-3
TP-4TP-5TP-5A
HSA-2A
HSA-1HSA-2HSA-3HSA-4
HSA-5
HSA-3AHSA-6AHSA-5AHSA-4AHSA-7AHSA-8A
PROJECT NO:FIGURE
N:\CACADD\E\EDISION PARK\EDISON PARK-HL1685\FIGURES\1685F016 - Last Saved by: KViswanathan on 3/15/21 SITE MAP - ADDITIONAL BORING LOCATIONSEDISON PARK - ADDITIONAL WASTEDELINEATIONHUNTINGTON BEACH, CALIFORNIAJUNE 20211HL1685B 0150SCALE IN FEETN
BORINGS PERFORMED TODETERMINE DEPTH OF WASTE(GEOSYNTEC, 2020)EXPLORATORY TEST PITSPERFORMED (GEOSYNTEC, 2020)BORINGS PERFORMED TODETERMINE DEPTH OF WASTE(GEOSYNTEC, 2021)PREVIOUS INVESTIGATION AREACURRENT REQUESTEDINVESTIGATION AREAEXISTING BURIED LFG HEADERPIPE LEGEND
G

EXISTING BASKETBALL COURT

OUTDOOR RACQUETBALL COURT

EXISTING TENNIS COURTS

G G G G G G G
TP-1
TP-2
TP-3
HSA-2A
HSA-2
HSA-5

LATERAL LIMITS OF

DELINEATED WASTE
HSA-1
PROJECT NO:

FIGURE
N:\CACADD\E\EDISION PARK\EDISON PARK-HL1685\FIGURES\1685F014 - Last Saved by: KViswanathan on 5/6/21

FIELD INVESTIGATION LOCATIONS (NORTH)

EDISON PARK - WASTE DELINEATION

HUNTINGTON BEACH, CALIFORNIA
JUNE 2021
2A
HL1685B
500

SCALE IN FEET
N
LEGEND

APPROXIMATE LIMITS OF EXISTING

CANNERY STREET FORMER

REFUSE DISPOSAL STATION
WASTE [TRC, 2001]

BORINGS PERFORMED TO

DETERMINE DEPTH OF WASTE
(GEOSYNTEC, 2020)

EXPLORATORY TEST PITS
PERFORMED (GEOSYNTEC, 2020)

REQUESTED INVESTIGATION AREA
(2020)

REQUESTED INVESTIGATION AREA
(2021)

EXISTING BURIED LFG HEADER
PIPE

APPROXIMATE LATERAL LIMITS OF

DELINEATED WASTE

AREAS WITH TRACES OF WASTE

MATERIAL (QUERIED WHERE

UNCERTAIN)
G
PICNIC
AREA

CHILDREN'S PLAY AREA
TP-4
TP-5
TP-5A

INVESTIGATION
AREA (2021)
HSA-2A
HSA-3A
HSA-6A
HSA-5A
HSA-4A
HSA-7A HSA-8A
HSA-3HSA-4
PROJECT NO:

FIGURE
N:\CACADD\E\EDISION PARK\EDISON PARK-HL1685\FIGURES\1685F014 - Last Saved by: KViswanathan on 5/6/21

FIELD INVESTIGATION LOCATIONS (SOUTH)

EDISON PARK - WASTE DELINEATION

HUNTINGTON BEACH, CALIFORNIA
JUNE 2021
2B
HL1685B
500

SCALE IN FEET
N
LEGEND

APPROXIMATE LIMITS OF EXISTING

CANNERY STREET FORMER

REFUSE DISPOSAL STATION
WASTE [TRC, 2001]

BORINGS PERFORMED TO

DETERMINE DEPTH OF WASTE
(GEOSYNTEC, 2020)

EXPLORATORY TEST PITS
PERFORMED (GEOSYNTEC, 2020)

BORINGS PERFORMED TO

DETERMINE DEPTH OF WASTE
(GEOSYNTEC, 2021)

REQUESTED INVESTIGATION AREA
(2020)

REQUESTED INVESTIGATION AREA
(2021)

EXISTING BURIED LFG HEADER
PIPE

AREAS WITH TRACES OF WASTE

MATERIAL (QUERIED WHERE

UNCERTAIN)
G

HL1685B\Edison Park Waste Delineation Final Report

Appendix A
Soil Boring Permit, DigAlert Ticket
Confirmations and Geophysical Utility
Clearance Field Notes

1 Karthik Viswanathan
From: [email protected]
Sent: Friday, September 18, 2020 6:25 PM
To: Karthik Viswanathan
Subject: DigAlert Confirmation for Ticket A202620900-00A CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. If you have any suspicion, please confirm with the sender verbally that this email is authentic.

EMLCFM 03993A USAS 09/18/20 18:25:10 A202620900-00A NEW NORM POLY LREQ

Thank you for contacting Underground Service Alert of Southern California.

This is an automatically generated confirmation of your DigAlert.

For your safety please excavate carefully around the marked utility lines.

For more information regarding DigAlert's web portals, mobile apps and text messaging, please visit www.digalert.org or text Services to DIGALT (344258).

This email comes from an automated program that is NOT MONITORED.

DO NOT REPLY TO THIS EMAIL.

This is not a certified copy of the ticket.

Ticket: A202620900 Rev: 00A Created: 09/18/20 18:24 User: BRJ Chan: 100

Work Start: 09/24/20 07:00 Legal Start: 09/24/20 07:00 Expires: 10/16/20 23:59 Response required: Y Priority: 2

Excavator Information
Company: AMERICAN INTERGRATED SERVICES
Co Addr: 1502 E OPP ST
City : WILMINGTON State: CA Zip: 90744 Created By: KARTHIK VISWANATHAN-GEOSYNTEC Language: ENGLISH Office Phone: 714-969-0800 SMS/Cell: 510-993-8823 Office Email: [email protected]

Site Contact: SNEHA UPADHYAYA
Site Phone: 714-461-9911 Site SMS/Cell: 714-461-9911 Site Email: [email protected]

Excavation Area
State: CA County: ORANGE Place: HUNTINGTON BEACH Zip: 92646
Location: Address/Street: STILWELL DR
: X/ST1: POSTON LN
:
: APPROX 65FT W/OF POSTON LN AT APPROX 250FT, 400FT, 520FT, 760FT, : 1015FT S/OF STILWELL DR **ALL LOCATIONS WITHIN PARK** **PROPERTY OF : EDISON COMMUNITY PARK** **MARK 25FT RADIUS ALL LOCATIONS**

Delineated Method: WHITEPAINT
Work Type: (5) TEST PITS (8FT DEPTH)
Work For : GEOSYNTEC CONSULTANTS
Permit: Job/Work order:
1 Year: N Boring: N Street/Sidewalk: N Vacuum: N Explosives: N 2 Lat/Long
Center Generated (NAD83): 33.653755/-117.973122 33.653752/-117.972114 : 33.650862/-117.973129 33.650859/-117.972121
Excavator Provided: 33.653346/-117.972630 33.652895/-117.972609 : 33.652569/-117.972623 33.651933/-117.972633 33.651273/-117.972623

Map link:
https://newtin.digalert.org/newtinweb/map_tkt.nap?TRG=E4TbQYTXQXOSNVW-C

Members:

CSD91 ORANGE CO SANITATION CONTROL CENTER 714-593-7025 HUN01 C/OF HUNTINGTON BCH-WTR DAVID RICO 714-861-0134 MCISOCAL MCI (VERIZON BUSINESS) FIBE FIBER SECURITY DEPT 800-624-9675 SCG2XN SC GAS - GARDEN GROVE LEAD DISPATCHER - CHUCK 800-603-7060 UCHTRW_C5 UTIL/SPECTRUM GG - CATV SPECTRUM DAMAGE ONLY 844-780-6054 UOCW01 UTILIQUEST 4 OR CNTY WTR DIST SCOTT DAVIDSON / JUSTIN 714-766-9375xCELL USCEOR UTILIQUEST FOR SCE- ORANGE RE SC EDISON PERSONNEL 800-611-1911 UTFTRCA01 UTILIQUEST/FRONTIER - TEL/ UTILIQUEST DISPATCH 800-366-7801 (c) Copyright 2017 Underground Service Alert of Southern California.

All rights reserved.
1 Karthik Viswanathan
From: [email protected]
Sent: Friday, September 18, 2020 6:35 PM
To: Karthik Viswanathan
Subject: DigAlert Confirmation for Ticket A202620902-00A CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. If you have any suspicion, please confirm with the sender verbally that this email is authentic.

EMLCFM 03997A USAS 09/18/20 18:34:34 A202620902-00A NEW NORM POLY LREQ

Thank you for contacting Underground Service Alert of Southern California.

This is an automatically generated confirmation of your DigAlert.

For your safety please excavate carefully around the marked utility lines.

For more information regarding DigAlert's web portals, mobile apps and text messaging, please visit www.digalert.org or text Services to DIGALT (344258).

This email comes from an automated program that is NOT MONITORED.

DO NOT REPLY TO THIS EMAIL.

This is not a certified copy of the ticket.

Ticket: A202620902 Rev: 00A Created: 09/18/20 18:34 User: BRJ Chan: 100

Work Start: 09/24/20 07:00 Legal Start: 09/24/20 07:00 Expires: 10/16/20 23:59 Response required: Y Priority: 2

Excavator Information
Company: ABC LIOVIN DRILLING
Co Addr: 1180 E BURNETT ST
City : SIGNAL HILL State: CA Zip: 90755 Created By: KARTHIK VISWANATHAN-GEOSYNTEC Language: ENGLISH Office Phone: 714-969-0800 SMS/Cell: 510-993-8823 Office Email: [email protected]

Site Contact: SNEHA UPADHYAYA
Site Phone: 714-461-9911 Site SMS/Cell: 714-461-9911 Site Email: [email protected]

Excavation Area
State: CA County: ORANGE Place: HUNTINGTON BEACH Zip: 92646
Location: Address/Street: STILWELL DR
: X/ST1: POSTON LN
:
: APPROX 50FT W/OF POSTON LN AT APPROX 320FT, 570FT, 745FT S/OF STILWELL : DR; APPROX 240FT W/OF POSTON LN AT APPROX 720FT & 450FT S/OF STILWELL : DR **ALL LOCATIONS WITHIN PARK** **PROPERTY OF EDISON COMMUNITY : PARK** **MARK 25FT RADIUS ALL LOCATIONS**

Delineated Method: WHITEPAINT
Work Type: (5) SOIL BORINGS
Work For : GEOSYNTEC CONSULTANTS
Permit: Job/Work order:
2 1 Year: N Boring: N Street/Sidewalk: N Vacuum: N Explosives: N

Lat/Long
Center Generated (NAD83): 33.653556/-117.973708 33.653537/-117.972127 : 33.651572/-117.973731 33.651553/-117.972151
Excavator Provided: 33.653131/-117.972625 33.652477/-117.972639 : 33.651969/-117.972632 33.652032/-117.973225 33.652770/-117.973224

Map link:
https://newtin.digalert.org/newtinweb/map_tkt.nap?TRG=64Co9pCk9sztws3-k

Members:

HUN01 C/OF HUNTINGTON BCH-WTR DAVID RICO 714-861-0134 SCG2XN SC GAS - GARDEN GROVE LEAD DISPATCHER - CHUCK 800-603-7060 UCHTRW_C5 UTIL/SPECTRUM GG - CATV SPECTRUM DAMAGE ONLY 844-780-6054 UOCW01 UTILIQUEST 4 OR CNTY WTR DIST SCOTT DAVIDSON / JUSTIN 714-766-9375xCELL USCEOR UTILIQUEST FOR SCE- ORANGE RE SC EDISON PERSONNEL 800-611-1911 UTFTRCA01 UTILIQUEST/FRONTIER - TEL/ UTILIQUEST DISPATCH 800-366-7801 (c) Copyright 2017 Underground Service Alert of Southern California.

All rights reserved.
1 Karthik Viswanathan
From: [email protected]
Sent: Monday, March 8, 2021 3:11 PM
To: Sneha Upadhyaya
Subject: DigAlert Confirmation for Ticket A210670984-00A CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. If you have any suspicion, please confirm with the sender verbally that this email is authentic.

EMLCFM 04567A USAS 03/08/21 15:11:07 A210670984-00A NEW NORM POLY LREQ

Thank you for contacting Underground Service Alert of Southern California.

This is an automatically generated confirmation of your DigAlert.

For your safety please excavate carefully around the marked utility lines.

For more information regarding DigAlert's web portals, mobile apps and text messaging, please visit www.digalert.org or text Services to DIGALT (344258).

This email comes from an automated program that is NOT MONITORED.

DO NOT REPLY TO THIS EMAIL.

This is not a certified copy of the ticket.

Ticket: A210670984 Rev: 00A Created: 03/08/21 15:10 User: NAN Chan: 100

Work Start: 03/12/21 07:00 Legal Start: 03/12/21 07:00 Expires: 04/05/21 23:59 Response required: Y Priority: 2

Excavator Information
Company: ABC LIOVIN DRILLING
Co Addr: 1180 E BURNETT ST
City : SIGNAL HILL State: CA Zip: 90755 Created By: KARTHIK VISWANATHAN (GEOSYNTEC Language: ENGLISH Office Phone: 714-969-0800 SMS/Cell: 510-993-8823 Office Email: [email protected]

Site Contact: SNEHA UPADHYAYA
Site Phone: 714-461-9911 Site SMS/Cell: 714-461-9911 Site Email: [email protected]

Excavation Area
State: CA County: ORANGE Place: HUNTINGTON BEACH Zip: 92646
Location: Address/Street: MAGNOLIA ST
: X/ST1: HAMILTON AVE
:
: APPROX 685FT N/OF HAMILTON AVE AT APPROX 430FT W/OF S/BOUND MAGNOLIA : ST; APPROX 630FT N/OF HAMILTON AVE AT APPROX 370FT W/OF S/BOUND : MAGNOLIA ST; APPROX 585FT N/OF HAMILTON AVE AT APPROX 345FT W/OF : S/BOUND MAGNOLIA ST; APPROX 525FT N/OF HAMILTON AVE AT APPROX 335FT : W/OF S/BOUND MAGNOLIA ST; APPROX 530FT N/OF HAMILTON AVE AT APPROX : 375FT W/OF S/BOUND MAGNOLIA ST; APPROX 545FT N/OF HAMILTON AVE AT : APPROX 420FT W/OF S/BOUND MAGNOLIA ST; APPROX 608FT N/OF HAMILTON AVE : AT APPROX 375FT W/OF S/BOUND MAGNOLIA ST; **MARK 25FT RADIUS AROUND : EACH LOCATION** **DELINEATED EACH LOCATION #1-8 IN WHITE PAINT**

2 Delineated Method: WHITEPAINT
Work Type: 8 SOIL BORINGS
Work For : GEOSYNTEC
Permit: Job/Work order:
1 Year: N Boring: N Street/Sidewalk: N Vacuum: N Explosives: N

Lat/Long
Center Generated (NAD83): 33.652888/-117.972945 33.652751/-117.971663 : 33.651623/-117.973080 33.651486/-117.971798
Excavator Provided: 33.652427/-117.972528 33.652276/-117.972352 : 33.652137/-117.972245 33.651984/-117.972236 33.651974/-117.972353 : 33.652017/-117.972514 33.652159/-117.972535 33.652187/-117.972344

Map link:
https://newtin.digalert.org/newtinweb/map_tkt.nap?TRG=F5RZPXUXMfKaEaN-Q

Members:

HUN01 C/OF HUNTINGTON BCH-WTR DAVID RICO 714-861-0134 SCG2XN SOCALGAS DISTRIBUTION GARDEN LEAD DISPATCHER - CHUCK 800-603-7060 UOCW01 UTILIQUEST 4 OR CNTY WTR DIST SCOTT DAVIDSON / JUSTIN 714-766-9375xCELL USCEOR UTILIQUEST FOR SCE- ORANGE RE SC EDISON PERSONNEL 800-611-1911 UTFTRCA01 UTILIQUEST/FRONTIER - TEL/ UTILIQUEST DISPATCH 800-366-7801 (c) Copyright 2017 Underground Service Alert of Southern California.

All rights reserved.

APPLICATIONFOR WELL CONSTRUCTIONPErB^FHCA/ACC . UNTING

ORANGE COUNTY HEALTH CARE AGENCY

ENVIRONMENTAL HEALTH DIVISION
CITY
Huntington Beach
1241 E. DYER ROAD, SUITE 120
SANTA ANA, CA 92706-5611
(714) 433«)00
(714) 433^1
DATE
03/02/2021
MAR 0 3

WELL LOCATION (ADDRESS IF AVAILABLE)
Edison Park - 21377 Magnolia St., Huntington Beach, CA 92646 ENVIRONMENTALhEAL "I^

NAME OF WELL OWNER
City of Huntington Beach - Community Services Dept.

ADDRESS
2000 Main Street

CITY ZIP
Huntington Beach 92648

NAME OF CONSULTING FIRM
Geosyntec Consultants, Inc.

BUSINESS ADDRESS
2100 Main Street. Suite 150

TELEPHONE
714-536-5486

CITY ZIP TELEPHONE
Huntington Beach 92648 714-969-0800
NAME OF DRILLING CO.

ABC Liovin Drilling Inc. v/
C-57 LICENSE NO.
422904 y
CITY
Signal Hill
ZIP
90755

TELEPHONE
562-981-8575
DIAGRAM OF WELL SITE (Use additional sheets and/or attachments) 1SITEPLAN ATTACHED
FOR ACCOUNTING USE ONLY:

MlOHnHSO NO.

DATE. 3/5 U
INTL.

CHECK NO.

AMOUNT
APPROVAL BY OTHER AGENCIES:

JURISDICTION

REMARKS

AUTHORIZED SIGNATURE
00^
DATE
TYPE OF W/ELL (CHECK) PROBE SURVEY 
PRIVATE DOMESTIC  MONITORING 
PUBLIC DOMESTIC  SOIL BORING
IRRIGATION  OTHER n
CATHODIC  TOTAL NUMBER ^
A. WELLS - SUBMIT A WELL CONSTRUCTION DIAGRAM
(INCLUDE DIMENSIONS)
B. SOIL BORINGS AND PROBES-
TOTAL DEPTH ^ feet
SEALING MATERIAL Hydrated Bentonite Chips
C. PROPOSEDSTART DATE 3/12/2021
/ hereby agree lo comply in every respect with all
requirements of the Health Care Agency and with all
ordinances and laws of the County of Orange and of the
Slate of California pertaining lo well construction,
reconstruction and destruction, including the require*
ments to maintain the integrity of all significant confining zones.
3/2/2021

APPLICANT'S SIGNATURE
Karthik Viswanathan
DATE

PRINT NAME
714-465-1250

PHONE NUMBER
714-333-4275

FAXNUMBER
DISPOSITION OF PERMIT (DO NOT FILL IN):

APPROVED SUBJECT TO THE FOLLOWING CONDITIONS;
A. NOTIFY THIS AGENCY AT LEAST 48 HOURS
PRIOR TO START. di\ar\<^eS
 PRIOR TOSEALINGTHE ANNULARSPACEORFILLINGOF
THE CONDUCTOR CASING.

B, SUBMIT TO THE AGENCY WTTHIN 30 DAYS AFTER
COMPLETION OF WORK. A WELL COMPLETION REPORT
AND/OR DRILLING LOGS, PLEASE REFERENCE PERMIT NO.

C.  SECURE ALL MONITORING WELLS TO PREVENT TAMPERING.

I
D. M OTHER
 DENIED
PERMjTBSUEDETA— , , PAT^ _
iNT NAME PHONE NUMBER
WHEN SIGNED BY ORANGE COUNTY HEALTH CARE AGENCY REPRESENTATIVE, THIS APPLICATION IS A PERMIT. fi.F272-09.0803(R11/01)

HL1685B\Edison Park Waste Delineation Final Report

Appendix B
SCAQMD Permit for Rule 1150

HL1685B\Edison Park Waste Delineation Final Report

Appendix C
Test Pit Logs

HL1685B\Edison Park Waste Delineation Final Report

Appendix D
Borings Logs with Key

KEY/SYMBOLS 01/04

PTHIGHLY ORGANIC SOILS
NOTE: DUAL SYMBOLS USED FOR BORDERLINE CLASSIFICATIONS

UNIFIED SOIL CLASSIFICATION AND SYMBOL CHART
COARSE

GRAINED
SOILS

MORE THAN
50% OF

MATERIAL

COARSER
THAN NO. 200

SIEVE SIZE

MAJOR DIVISIONS SYMBOLS DESCRIPTIONS
GRAVEL
AND

GRAVELLY
SOILS

MORE THAN
50% OF
COARSE

FRACTION

RETAINED ON
NO.4 SIEVE
SAND
AND
AND
CLAYS

LIQUID LIMIT
LESS THAN 50

LIQUID LIMIT

GREATER
THAN 50
ML
CL
OL
MH
CH
OH
SANDY
SOILS

MORE THAN
50% OF
COARSE

FRACTION
PASSING NO.4
SIEVE
CLEAN

GRAVELS

LITTLE OR NO
FINES

GRAVELS

WITH FINES

APPRECIABLE

AMOUNT OF
FINES
SANDS
CLEAN

LITTLE OR NO
FINES
SANDS
GW
GP
GM
GC
SW
SM
SP

WELL-GRADED GRAVELS,

GRAVEL-SAND MIXTURES,

LITTLE OR NO FINES

POORLY GRADED GRAVELS,

GRAVEL-SAND MIXTURES,

LITTLE OR NO FINES

SILTY GRAVELS, GRAVEL-

SAND-SILT MIXTURES

CLAYEY GRAVELS, GRAVEL
-SAND-CLAY MIXTURES

WELL GRADED SANDS,

GRAVELLY SANDS, LITTLE OR

NO FINES

POORLY GRADED SANDS,

GRAVELLY SANDS, LITTLE OR

NO FINES

SILTY SANDS, SAND-SILT

MIXTURESWITH FINES

APPRECIABLE

AMOUNT OF
FINES

SC CLAYEY SANDS, SAND-CLAY

MIXTURES
FINE

GRAINED
SOILS

MORE THAN
50% OF

MATERIAL

FINER THAN
NO. 200

SIEVE SIZE
SILTS
AND
CLAYS
SILTS

PEAT, HUMUS, SWAMP SOILS

WITH HIGH ORGANIC CONTENT

ORGANIC CLAYS OF MEDIUM TO

HIGH PLASTICITY, ORGANIC
SILTS

INORGANIC CLAYS OF HIGH

PLASTICITY, FAT CLAYS

INORGANIC SILTS, MICACEOUS OR DIATOMACEOUS FINE

SANDY OR SILTY SOILS, ELASTIC SILT

ORGANIC SILTS AND ORGANIC

SILTY CLAYS OF LOW PLASTICITY

INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY,

GRAVELLY CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN
CLAYS

INORGANIC SILTS AND VERY FINE SANDS, ROCK FLOUR,

SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH

SLIGHT PLASTICITY

CONSISTENCY UNCONFINED COMPRESSIVE

STRENGTH (TONS/SQ FT)
FINE

GRAINED
SOILS
0 - 2
3 - 4
5 - 8
9 - 15
16 - 30
31 - 50
>50

VERY SOFT
SOFT
FIRM
STIFF

VERY STIFF
HARD

VERY HARD
<0.25

0.25 - 0.50

0.50 - 1.00

1.00 - 2.00

2.00 - 4.00
>4.00
COARSE

GRAINED
SOILS

RELATIVE

DENSITY
0 - 4
5 - 10
11 - 30
31 - 50
>50

VERY LOOSE
LOOSE

MEDIUM DENSE
DENSE

VERY DENSE
EMPIRICAL CORRELATIONS WITH STANDARD PENETRATION RESISTANCE N60 VALUES * N60 VALUE *
(BLOWS/FT)
N60 VALUE *
(BLOWS/FT)
* ASTM D 1586; NUMBER OF BLOWS OF 140 POUND HAMMER FALLING 30 INCHES TO DRIVE A 2 IN. O.D., 1.4 IN. I.D. SAMPLER ONE FOOT, CORRECTED FOR HAMMER EFFICIENCY.

PLASTICITY CHART
P
L
A
S
T
I
C
I
T
Y
I
N
D
E
X
LIQUID LIMIT (LL) (%)
"U" LINE
CH or OH
CL or OL
"A" LINE
MH or OH
PI=0.73(LL-20)
ML or OLCL-ML
0 10
20 30
40 50
60 0 10 20 30 40 50 60 70 80 9016 100
01-KEY/SYMBOLS HL1685A.GPJ GEOSNTEC.GDT 10/25/20

PARTICLE SIZE IDENTIFICATION
USCS (SOILS ONLY) * SEDIMENTARY (ROCK ONLY)

BOULDER
COBBLE
GRAVEL: COARSE
GRAVEL: FINE
SAND: COARSE
SAND: MEDIUM
SAND: FINE

SILT/CLAY
>300 mm
75 - 300 mm
20 - 75 mm

4.75 - 20 mm
2 - 4.75 mm

0.42 - 2 mm

0.074 - 0.42 mm
<0.074 mm

BOULDER
COBBLE
PEBBLE

GRANULE
SAND: V. COARSE
SAND: COARSE
SAND: MEDIUM
SAND: FINE
SAND: V. FINE
SILT
CLAY
>256 mm
64 - 256 mm
4 - 64 mm
2 - 4 mm
1 - 2 mm

0.5 - 1 mm

0.25 - 0.5 mm

0.125 - 0.25 mm

0.063 - 0.125 mm

0.004 - 0.063 mm
<0.004 mm
* POORLY GRADED - PREDOMINANTLY ONE GRAIN SIZE, OR HAVING A RANGE OF SIZES

WITH SOME INTERMEDIATE SIZES MISSING
* WELL GRADED - HAVING WIDE RANGE OF GRAIN SIZES AND APPRECIABLE AMOUNTS OF

ALL INTERMEDIATE PARTICLE SIZES

PERCENTAGE OF PARTICLE TYPE IN DECREASING ORDER OF PARTICLE SIZE (GRAVEL,SAND,FINES), BASED ON VISUAL OBSERVATION

WELL SYMBOLS

BENTONITE SEAL

CONCRETE
GROUT

TRANSITION
SAND

SAND PACK

CENTRALIZER

NATIVE/SLUFF

GRAVEL PACK
MSL: Mean Sea Level
Pump Inlet

SAMPLE TYPE AND OTHER SYMBOLS
Static Water Level
Water Level at Time
Drilling, or as Shown
HSA: Hollow Stem Auger
BTOC: Below Top of
Casing
BGS: Below Ground
Surface
AGS: Above Ground
Surface

MODIFIED CALIFORNIA
SAMPLE

CORE SAMPLE

BULK SAMPLE

DRIVE SAMPLE

STANDARD

PENETRATION TEST

SHELBY TUBE
Loss of Drilling Fluid

PROJECT NUMBER

PROJECT LOCATION

PROJECT
GS FORM:

Huntington Beach, CA

KEY SHEET - CLASSIFICATIONS AND SYMBOLS
Edison Park Waste Delineation
HL1685A

OTHER MATERIAL SYMBOLS
Conglomerate
Clayey Sandstone
Sandy Siltstone
Siltstone
Clayey Siltstone/
Silty Claystone
Sandstone
Silty Sandstone
Claystone
Sandy Claystone
Metamorphic
Limestone
Dolomite
Glacial Till
Granitic/Intrusive
Volcanic/Extrusive
Landslide Debris
Artificial Fill
Concrete/Asphalt
Marker Bed
Refuse
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

Silty SAND (SM): brown; dry; fine sand; [0,80,20];
non-plastic.

LANDFILL MAERIAL: dark grey; moist; no odor; wood
pieces, asphalt concrete debris.

Silty SAND (SM): grey; wet; fine sand; [0,80,20]; low
plastic.

Terminate boring at 11.5-ft below ground surface
(bgs).
16:20
16:30
16:45
16:55
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
10 5
0 -5
-10
-15
02-GEOTECH1 HL1685A.GPJ GEOSNTEC.GDT 10/25/20

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin 33.65306
-117.97278
Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:

GS FORM:

SHEET
Sep 28, 20
HSA-1 OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 11

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685A
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

Silty SAND (SM): brown; dry; fine sand; [5,75,20];
non-plastic; 1/4-in. to 1/2-in. gravel.

LANDFILL MAERIAL: dark grey; moist; no odor; wood
pieces, asphalt concrete debris.

Silty SAND (SM): grey; wet; fine sand; [0,80,20];
non-plastic.

Terminate boring at 16.5-ft below ground surface
(bgs).
15:30
15:35
15:45
15:50
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
5 0
-5
-10
-15
-20
02-GEOTECH1 HL1685A.GPJ GEOSNTEC.GDT 10/25/20

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin 33.65250
-117.97250
Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:

GS FORM:

SHEET
Sep 28, 20
HSA-2 OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 7

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685A
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

Silty SAND (SM): brown; dry; fine sand; [5,75,20];
non-plastic; 1/4-in. to 1/2-in. gravel.

LANDFILL MAERIAL: dark grey; moist; no odor; wood
pieces, asphalt concrete debris.

Poorly-graded SAND with Silt (SP-SM): grey; wet;
predominantly fine sand; [0,90,10]; non-plastic.

Terminate boring at 21.5-ft below ground
surface (bgs).
13:55
14:05
14:20
14:30
14:40
14:45
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
5 0
-5
-10
-15
-20
02-GEOTECH1 HL1685A.GPJ GEOSNTEC.GDT 10/25/20

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-in
ch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME
85 ABC Liovin 33.65194
-117.97250
Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:

GS FORM:

SHEET
Sep 28, 20
HSA-3 OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 7

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685A
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

Hard drilling observed.

Hard drilling observed.

Silty SAND (SM): brown; dry; fine sand; [5,75,20];
non-plastic; 1/4-in. to 1/2-in. gravel.

LANDFILL MAERIAL: dark grey; moist; no odor; wood
pieces, asphalt concrete debris.
10:50
10:55
11:10
11:15
11:20
11:30
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
0 -5
-10
-15
-20
-25
02-GEOTECH1 HL1685A.GPJ GEOSNTEC.GDT 10/25/20

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin 33.65194
-117.97306
Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:

GS FORM:

SHEET
Sep 28, 20
HSA-4 OF1
GS FORM:

BORING 2

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 5

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685A
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Very hard drilling, little to no spoils.

Refusal; auger plugged with wood.

Wood chunks observed in the spoils
as the auger was retracted.

Terminate boring at 34-ft below ground surface (bgs)
due to refusal.
12:00
12:40
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
35 40
45 50
55 60
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
-30
-35
-40
-45
-50
-55
02-GEOTECH1 HL1685A.GPJ GEOSNTEC.GDT 10/25/20

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin 33.65194
-117.97306
Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:

GS FORM:

SHEET
Sep 28, 20
HSA-4 OF2
GS FORM:

BORING 2

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 5

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685A
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

Silty SAND (SM): brown; dry; fine sand; [5,75,20];
non-plastic; 1/4-in. to 1/2-in. gravel.

LANDFILL MAERIAL: dark grey; moist; no odor; wood
pieces, asphalt concrete debris.
organic odor.
becomes wet.
07:45
08:00
08:20
08:25
08:30
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
5 0
-5
-10
-15
-20
02-GEOTECH1 HL1685A.GPJ GEOSNTEC.GDT 10/25/20

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin 33.65278
-117.97333
Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:

GS FORM:

SHEET
Sep 28, 20
HSA-5 OF1
GS FORM:

BORING 2

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 9

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685A
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hard drilling (rattling of auger)
observed.

No recovery.

Hard drilling observed.

No recovery.

Silty SAND (SM): grey; wet; fine sand; [0,80,20];
non-plastic.

Terminate boring at 41.5-ft below ground surface
(bgs).
09:00
09:30
09:32
09:35
09:45
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
35 40
45 50
55 60
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
-25
-30
-35
-40
-45
-50
02-GEOTECH1 HL1685A.GPJ GEOSNTEC.GDT 10/25/20

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin 33.65278
-117.97333
Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:

GS FORM:

SHEET
Sep 28, 20
HSA-5 OF2
GS FORM:

BORING 2

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 9

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685A
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
KEY/SYMBOLS 01/04

PTHIGHLY ORGANIC SOILS
NOTE: DUAL SYMBOLS USED FOR BORDERLINE CLASSIFICATIONS

UNIFIED SOIL CLASSIFICATION AND SYMBOL CHART
COARSE

GRAINED
SOILS

MORE THAN
50% OF

MATERIAL

COARSER
THAN NO. 200

SIEVE SIZE

MAJOR DIVISIONS SYMBOLS DESCRIPTIONS
GRAVEL
AND

GRAVELLY
SOILS

MORE THAN
50% OF
COARSE

FRACTION

RETAINED ON
NO.4 SIEVE
SAND
AND
AND
CLAYS

LIQUID LIMIT
LESS THAN 50

LIQUID LIMIT

GREATER
THAN 50
ML
CL
OL
MH
CH
OH
SANDY
SOILS

MORE THAN
50% OF
COARSE

FRACTION
PASSING NO.4
SIEVE
CLEAN

GRAVELS

LITTLE OR NO
FINES

GRAVELS

WITH FINES

APPRECIABLE

AMOUNT OF
FINES
SANDS
CLEAN

LITTLE OR NO
FINES
SANDS
GW
GP
GM
GC
SW
SM
SP

WELL-GRADED GRAVELS,

GRAVEL-SAND MIXTURES,

LITTLE OR NO FINES

POORLY GRADED GRAVELS,

GRAVEL-SAND MIXTURES,

LITTLE OR NO FINES

SILTY GRAVELS, GRAVEL-

SAND-SILT MIXTURES

CLAYEY GRAVELS, GRAVEL
-SAND-CLAY MIXTURES

WELL GRADED SANDS,

GRAVELLY SANDS, LITTLE OR

NO FINES

POORLY GRADED SANDS,

GRAVELLY SANDS, LITTLE OR

NO FINES

SILTY SANDS, SAND-SILT

MIXTURESWITH FINES

APPRECIABLE

AMOUNT OF
FINES

SC CLAYEY SANDS, SAND-CLAY

MIXTURES
FINE

GRAINED
SOILS

MORE THAN
50% OF

MATERIAL

FINER THAN
NO. 200

SIEVE SIZE
SILTS
AND
CLAYS
SILTS

PEAT, HUMUS, SWAMP SOILS

WITH HIGH ORGANIC CONTENT

ORGANIC CLAYS OF MEDIUM TO

HIGH PLASTICITY, ORGANIC
SILTS

INORGANIC CLAYS OF HIGH

PLASTICITY, FAT CLAYS

INORGANIC SILTS, MICACEOUS OR DIATOMACEOUS FINE

SANDY OR SILTY SOILS, ELASTIC SILT

ORGANIC SILTS AND ORGANIC

SILTY CLAYS OF LOW PLASTICITY

INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY,

GRAVELLY CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN
CLAYS

INORGANIC SILTS AND VERY FINE SANDS, ROCK FLOUR,

SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH

SLIGHT PLASTICITY

CONSISTENCY UNCONFINED COMPRESSIVE

STRENGTH (TONS/SQ FT)
FINE

GRAINED
SOILS
0 - 2
3 - 4
5 - 8
9 - 15
16 - 30
31 - 50
>50

VERY SOFT
SOFT
FIRM
STIFF

VERY STIFF
HARD

VERY HARD
<0.25

0.25 - 0.50

0.50 - 1.00

1.00 - 2.00

2.00 - 4.00
>4.00
COARSE

GRAINED
SOILS

RELATIVE

DENSITY
0 - 4
5 - 10
11 - 30
31 - 50
>50

VERY LOOSE
LOOSE

MEDIUM DENSE
DENSE

VERY DENSE
EMPIRICAL CORRELATIONS WITH STANDARD PENETRATION RESISTANCE N60 VALUES * N60 VALUE *
(BLOWS/FT)
N60 VALUE *
(BLOWS/FT)
* ASTM D 1586; NUMBER OF BLOWS OF 140 POUND HAMMER FALLING 30 INCHES TO DRIVE A 2 IN. O.D., 1.4 IN. I.D. SAMPLER ONE FOOT, CORRECTED FOR HAMMER EFFICIENCY.

PLASTICITY CHART
P
L
A
S
T
I
C
I
T
Y
I
N
D
E
X
LIQUID LIMIT (LL) (%)
"U" LINE
CH or OH
CL or OL
"A" LINE
MH or OH
PI=0.73(LL-20)
ML or OLCL-ML
0 10
20 30
40 50
60 0 10 20 30 40 50 60 70 80 9016 100
01-KEY/SYMBOLS HL1685B.GPJ GEOSNTEC.GDT 3/26/21

PARTICLE SIZE IDENTIFICATION
USCS (SOILS ONLY) * SEDIMENTARY (ROCK ONLY)

BOULDER
COBBLE
GRAVEL: COARSE
GRAVEL: FINE
SAND: COARSE
SAND: MEDIUM
SAND: FINE

SILT/CLAY
>300 mm
75 - 300 mm
20 - 75 mm

4.75 - 20 mm
2 - 4.75 mm

0.42 - 2 mm

0.074 - 0.42 mm
<0.074 mm

BOULDER
COBBLE
PEBBLE

GRANULE
SAND: V. COARSE
SAND: COARSE
SAND: MEDIUM
SAND: FINE
SAND: V. FINE
SILT
CLAY
>256 mm
64 - 256 mm
4 - 64 mm
2 - 4 mm
1 - 2 mm

0.5 - 1 mm

0.25 - 0.5 mm

0.125 - 0.25 mm

0.063 - 0.125 mm

0.004 - 0.063 mm
<0.004 mm
* POORLY GRADED - PREDOMINANTLY ONE GRAIN SIZE, OR HAVING A RANGE OF SIZES

WITH SOME INTERMEDIATE SIZES MISSING
* WELL GRADED - HAVING WIDE RANGE OF GRAIN SIZES AND APPRECIABLE AMOUNTS OF

ALL INTERMEDIATE PARTICLE SIZES

PERCENTAGE OF PARTICLE TYPE IN DECREASING ORDER OF PARTICLE SIZE (GRAVEL,SAND,FINES), BASED ON VISUAL OBSERVATION

WELL SYMBOLS

BENTONITE SEAL

CONCRETE
GROUT

TRANSITION
SAND

SAND PACK

CENTRALIZER

NATIVE/SLUFF

GRAVEL PACK
MSL: Mean Sea Level
Pump Inlet

SAMPLE TYPE AND OTHER SYMBOLS
Static Water Level
Water Level at Time
Drilling, or as Shown
HSA: Hollow Stem Auger
BTOC: Below Top of
Casing
BGS: Below Ground
Surface
AGS: Above Ground
Surface

MODIFIED CALIFORNIA
SAMPLE

CORE SAMPLE

BULK SAMPLE

DRIVE SAMPLE

STANDARD

PENETRATION TEST

SHELBY TUBE
Loss of Drilling Fluid

PROJECT NUMBER

PROJECT LOCATION

PROJECT
GS FORM:

Huntington Beach, CA

KEY SHEET - CLASSIFICATIONS AND SYMBOLS
Edison Park Waste Delineation
HL1685B

OTHER MATERIAL SYMBOLS
Conglomerate
Clayey Sandstone
Sandy Siltstone
Siltstone
Clayey Siltstone/
Silty Claystone
Sandstone
Silty Sandstone
Claystone
Sandy Claystone
Metamorphic
Limestone
Dolomite
Glacial Till
Granitic/Intrusive
Volcanic/Extrusive
Landslide Debris
Artificial Fill
Concrete/Asphalt
Marker Bed
Refuse
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

CONCRETE
Silty SAND (SM): brown; moist; fine sand; [5,80,15];
non-plastic; trace 1/4-in. to 1/2-in. gravel.

Fat CLAY (CH): dark grey; moist; trace fine sand;
[5,5,90]; medium to high plasticity; slight organic odor; trace brick debris pieces.

Fat CLAY with Sand (CH): dark grey; moist; fine
sand; [0;20;80]; medium to high plasticity.

Sandy SILT (ML): dark grey; wet; fine sand; [0,40,60];
none to low plasticity.

Terminate boring at 16.5-ft below ground surface
(bgs).
13:05
13:15
13:25
13:40
13:45
13:50
100
100
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
8 7
6 5
4 3
2 1
0 -1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
02-GEOTECH1 HL1685B.GPJ GEOSNTEC.GDT 4/9/21

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin Groundwater was not encountered. Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:
-117.972310

33.652273
GS FORM:

SHEET
Mar 12, 21
HSA-2A OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 9

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685B
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

CONCRETE
Silty SAND (SM): brown; moist; fine sand; [5,80,15];
non-plastic; trace 1/4-in. to 1/2-in. gravel.

Fat CLAY (CH): dark grey; moist; trace fine sand;
[0,5,95]; medium to high plasticity; slight organic odor; trace asphalt debris pieces.

Fat CLAY with Sand (CH): dark grey; moist; fine
sand; [0;25;75]; medium to high plasticity.

Silty SAND (SM): grey; wet; fine sand; [0,60,40]; none
to low plasticity.

Terminate boring at 16.5-ft below ground surface
(bgs).
11:20
11:35
11:45
12:00
12:10
12:20
100
100
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
7 6
5 4
3 2
1 0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
02-GEOTECH1 HL1685B.GPJ GEOSNTEC.GDT 4/9/21

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:
-117.972250

33.652136
GS FORM:

SHEET
Mar 12, 21
HSA-3A OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 8

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685B
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

CONCRETE
Silty SAND (SM): brown; moist; fine sand; [5,75,20];
non-plastic; trace 1/4-in. to 1/2-in. gravel.

Fat CLAY (CH): dark grey; moist; trace fine sand;
[5,5,90]; medium to high plasticity; slight organic odor; wood debris; trace brick debris pieces.
few brick debris pieces.

Fat CLAY (CH): dark grey; moist; few fine sand;
[0;10;90]; medium to high plasticity; trace sea shells. becomes wet; [0;5;95].

Sandy SILT (ML): grey; wet; fine sand; (0;40;60); low
to medium plasticity.

Fat CLAY (CH): grey; wet; few fine sand; [0,10,90];
medium to high plasticity.

Terminate boring at 16.5-ft below ground surface
(bgs).
14:30
14:40
14:50
15:15
15:25
15:30
100
100
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
8 7
6 5
4 3
2 1
0 -1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
02-GEOTECH1 HL1685B.GPJ GEOSNTEC.GDT 4/9/21

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:
-117.972290

33.651973
GS FORM:

SHEET
Mar 12, 21
HSA-4A OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 9

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685B
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

CONCRETE
Silty SAND (SM): brown; moist; fine sand; [5,75,20];
none to low plasticity; trace 1/4-in. to 1/2-in. gravel.

Fat CLAY (CH): dark grey; moist; trace fine sand;
[0,5,95]; medium to high plasticity; slight organic odor.

Sandy SILT (ML): dark grey; wet; fine sand; (0;30;70);
low to medium plasticity.

Terminate boring at 17.0-ft below ground surface
(bgs).
16:00
16:15
16:25
16:45
16:50
17:00
100
100
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
8 7
6 5
4 3
2 1
0 -1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
02-GEOTECH1 HL1685B.GPJ GEOSNTEC.GDT 4/9/21

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-in
ch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME
85 ABC Liovin Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:
-117.972360

33.651951
GS FORM:

SHEET
Mar 12, 21
HSA-5A OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 9

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685B
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

CONCRETE
Silty SAND (SM): brown; moist; fine sand; [5,80,15];
non-plastic; trace 1/4-in. to 1/2-in. gravel.

Fat CLAY (CH): dark grey; moist; trace fine sand;
[0,5,95]; medium to high plasticity; slight organic odor. [0;10;90]; no odor.

Sandy SILT (ML): dark grey; wet; fine sand; [0,30,70];
none to low plasticity.

Terminate boring at 16.5-ft below ground surface
(bgs).
17:10
17:15
17:30
17:35
17:45
17:50
100
100
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
6 5
4 3
2 1
0 -1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
-21
-22
-23
02-GEOTECH1 HL1685B.GPJ GEOSNTEC.GDT 4/9/21

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

K. Viswanathan
CME 85
ABC Liovin Groundwater was not encountered. Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:
-117.972510

33.652033
GS FORM:

SHEET
Mar 12, 21
HSA-6A OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 7

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685B
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275
Hand augered to 5 ft bgs.

First depth to groundwater.

CONCRETE
Silty SAND (SM): brown; moist; fine sand; [5,80,15];
none to low plasticity; trace 1/4-in. to 1/2-in. gravel.

Fat CLAY (CH): dark grey; moist; trace fine sand;
[0,5,95]; medium to high plasticity; slight organic odor.

Sandy SILT (ML): dark brown; wet; fine sand;
(0;40;60); low to medium plasticity.

Fat CLAY (CH): grey; wet; few fine sand; [0,10,90];
medium to high plasticity.

Terminate boring at 18.0-ft below ground surface
(bgs).
07:50
08:00
08:10
08:25
08:35
100
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
9 8
7 6
5 4
3 2
1 0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
02-GEOTECH1 HL1685B.GPJ GEOSNTEC.GDT 4/9/21

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:
-117.972520

33.652178
GS FORM:

SHEET
Mar 12, 21
HSA-7A OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 10

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685B
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275

CONCRETE
Silty SAND (SM): brown; moist; fine sand; [0,85,15];
non-plastic.

Fat CLAY (CH): dark grey; moist; trace fine sand;
[0,5,95]; medium to high plasticity; slight organic odor.

Sandy SILT (ML): dark gray; wet; fine sand; (0;40;60);
low to medium plasticity.

Silty SAND (SM): grey; wet; fine to medium sand;
[0;80;20]; none to low plasticity.

Terminate boring at 16.5-ft below ground surface
(bgs).
09:50
10:10
10:15
10:20
10:30
10:35
100
100
1) Soil Name (USCS Sym.)
2) Color
3) Moisture
4) Grain Size
5) Percentage
6) Plasticity
7) Density/Consistency
8) Other (Mineral Content,
Discoloration, Odor, etc.)

BOREHOLE LOG
ELEV.
(ft)
BLOWS PER 6"
PID READING (ppm)
DEPTH
(ft-bgs)

COMMENTS
TYPE

GRAPHIC LOG
5 10
15 20
25 30
SAMPLE
GEOTECH1 01/04
SAMPLE NO.

N VALUE
RECOVERY (%)
TIME (00:00)

DESCRIPTION
1) Rig Behavior
2) Air Monitoring
3) Pocket Pen
4) Tor Vane
9 8
7 6
5 4
3 2
1 0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
-19
-20
02-GEOTECH1 HL1685B.GPJ GEOSNTEC.GDT 4/9/21

EASTING

NORTHING
LOGGER

DIAMETER

DRILL MTHD

EQUIPMENT

CONTRACTOR

REVIEWER
Hollow Stem Auger
Y. Zemuy, P. E.
8-inch

SEE KEY SHEET FOR SYMBOLS AND ABBREVIATIONS
COORDINATE SYSTEM:

S. Upadhyaya
CME 85
ABC Liovin Borehole backfilled with hydrated bentonite chips. Logging of soils completed in general accordance with ASTM D2488 and ASTM D1586.

NOTES:
-117.972360

33.652181
GS FORM:

SHEET
Mar 12, 21
HSA-8A OF1
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 10

TOP OF CASING
DATUM ft +MSLEdison Park Waste Delineation
Huntington Beach, CA
HL1685B
2100 Main St
Suite 150
Huntington Beach, CA 92648
Tel: (714) 969-0800
Fax: (714) 333-4275

HL1685B\Edison Park Waste Delineation Final Report

Appendix E
Daily Field Reports

DAILY FIELD REPORT Report Sequence No.:001
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 01 DESCRIPTION: Geophysical Survey for Locating Utilities CONTRACTOR: GEOVision, Inc., DAY OF WEEK: Wednesday DATE: September 23, 2020
WEATHER: Sunny, High 72° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-001 - GEOPHYSICAL UTILITY CLEARANCE - 9.23.2020 1 of 4 Time Field Work Activities
0700 Arrived on site and met with GEOVision field crew Martin Garcia and Christopher Collins. 0705 Held a brief tailgate safety meeting. GEOVision crew acknowledged the THA. 0710 Performed a site walk with GEOVision crew to observe the proposed investigation locations (HSA-1 through HSA-5; TP-1 through TP-5).
0730 GEOVision started utility clearance survey at location of TP-1 test pit. Some utilities (likely irrigation and main water line) were encountered within 5 ft of TP-1. GEOVision marked a new location 14 ft north of the existing TP-1 location. 0800 GEOVision performed utility clearance survey at location of HSA-1 boring. No conflicts were found at HSA-1 location. 0810 GEOVision performed utility clearance survey at location of TP-2. Electrical and irrigation utility lines were located within 3 ft of TP-2 location. GEOVision marked a new TP-2 location 10 ft south of the existing location. 0820 GEOVision performed utility clearance survey at location of HSA-5 boring. No conflicts were found at HSA-5 location. 0835 GEOVision performed utility clearance survey at locations of TP-3 and HSA-2. Some utilities (likely irrigation lines) were encountered within 5 ft of HSA -2 and TP-3 location. GEOVision marked a new HAS-2 location 3 ft east of the existing location.
0850 GEOVision performed utility clearance survey at location of HSA -4. Some utilities were encountered within 2 ft of the HSA-4 location. GEOVision marked a new location 3 ft east of the existing location. 0900 GEOVision performed utility clearance survey at location s of TP-4 and HSA-3. Electrical and irrigation utility lines were encountered within 5-10 ft of TP-4 and HSA-3 locations. No conflict at HSA -3. GEOVision marked a new location 15 ft southwest of the existing TP-4 location.
0920 GEOVision performed utility clearance survey at TP-5 location. No conflicts were found at TP-5. 0945 Geosyntec and GEOVision departed the site for the day.

DAILY FIELD REPORT Report Sequence No.:001
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 01 DESCRIPTION: Geophysical Survey for Locating Utilities CONTRACTOR: GEOVision, Inc., DAY OF WEEK: Wednesday DATE: September 23, 2020
WEATHER: Sunny, High 72° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-001 - GEOPHYSICAL UTILITY CLEARANCE - 9.23.2020 2 of 4

GEOVision crew performing utility clearance survey at
location TP-1 (looking west)
Utility markings at TP-1 and the new TP-1 location
(looking west)

Location HSA-1 cleared of utilities (looking north) GEOVision crew performing utility clearance survey at location TP-2 (looking north)

New TP-1 location
Existing TP-1

DAILY FIELD REPORT Report Sequence No.:001
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 01 DESCRIPTION: Geophysical Survey for Locating Utilities CONTRACTOR: GEOVision, Inc., DAY OF WEEK: Wednesday DATE: September 23, 2020
WEATHER: Sunny, High 72° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-001 - GEOPHYSICAL UTILITY CLEARANCE - 9.23.2020 3 of 4

Electrical utility markings at existing TP-2 and the new TP- 2 location (looking north)
Location HSA-5 cleared of utilities (looking south)

Utility markings at existing TP-3 and HSA-2 locations and the new HSA-2 location (looking northwest)
Utility markings at existing HSA-4 location and the new HSA-4 location (looking northwest)

New TP-2 location
New HSA-2 location
TP-3
New HSA-4 location

DAILY FIELD REPORT Report Sequence No.:001
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 01 DESCRIPTION: Geophysical Survey for Locating Utilities CONTRACTOR: GEOVision, Inc., DAY OF WEEK: Wednesday DATE: September 23, 2020
WEATHER: Sunny, High 72° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-001 - GEOPHYSICAL UTILITY CLEARANCE - 9.23.2020 4 of 4

Utility markings (electrical and irrigation lines) at TP-4 and HSA-3 locations and the new TP-4 location (looking north) Location TP-5 cleared of utilities (looking northwest). The anomalies located are likely roots.

HSA-3
New TP-4 location

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Thursday DATE: September 24, 2020
WEATHER: Sunny, High 76° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-002 - TRENCHING AND BACKFILLING - 9.24.2020 1 of 5 Time Field Work Activities
0645 Geosyntec air monitoring staff Eric Garcia arrived on site. 0650 Geosyntec field staff Sneha Upadhyaya arrived on site. 0700 Met with American Integrated Services (AIS) field crew (Geoff Harris, Antonio Sanchez, Jose Avila, and Brandon Duncan) and Geosyntec Air Monitoring field staff (Eric Garcia). Discussed the plan for the day with AIS field crew. 0710 AIS unloaded the drums at the parking lot.
0720 AIS mobilized the field equipment to proposed TP-1 exploratory test pit location. Plywood panels were placed on the ground to prevent potential rutting of the vegetation from the backhoe tires. 0730 Conducted a brief tailgate safety meeting.
0740 Fence panels with wind screens were placed around the excavation area . Plastic tarps were placed for temporarily staging the excavated soil.
0745 Started excavation activities at TP -1 location using a backhoe (CASE 580 Super N) with 36 inches wide bucket. About 4 inches of sod and topsoil was removed carefully.
0750 Continued excavating through the cover soil [visual classification in general accordance with ASTM D2488: Silty SAND (SM)]
0810 Encountered a 1 ft long metallic object at 2 ft below the ground surface (bgs). 0820 Encountered waste at approximately 3.5 ft bgs. Continued excavation to delineate the lateral limit of the waste. 0825 Geosyntec engineer Karthik Viswanathan arrived on-site. 0830 Encountered an underground irrigation pipe at approximately 3.0 ft bgs(1.5-inch PVC pipe). Minor damage caused during excavation was observed on the pipe.
0900 A section of the irrigation pipe was cut for repair. Excavation was continued towards the east to delineate the lateral limit of waste.
0930 Observed the lateral limit of the waste. Geosyntec took field measurements, prepared a log of the test-pit to include the field sketch of the exploratory test-pit wall.
0950 AIS repaired the damaged section of the irrigation pipe. 1010 AIS went to fill up the water trailer.
1050 Started backfilling the test pit (TP -1) with the excavated materials. The excavated material was backfilled into the test-pit and compacted to a firm condition.
1130 City of Huntington Beach personnel (Farhad Bolourchi) arrived on-site. Geosyntec provided an update to Mr. Bolourchi on TP-1 excavation activities.
1140 Geosyntec Senior Engineer (Yonas Zemuy) arrived on-site. Mr. Zemuy and Mr. Bolourchi performed a site walk. 1200 Backfilling activities were completed at TP-1.
1210 AIS field crew stopped for lunch break.

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Thursday DATE: September 24, 2020
WEATHER: Sunny, High 76° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-002 - TRENCHING AND BACKFILLING - 9.24.2020 2 of 5 1250 Mobilized to TP-2 location.
1300 Excavation activities started at TP -2 location. The sod and topsoil were carefully removed. Excavation continued through the cover soil [visual classification in general accordance with ASTM D2488: Silty SAND (SM)]. 1315 Encountered waste at approximately 2 ft bgs at TP-2. Continued excavation towards the east to delineate the lateral limit of the waste.
1320 Observed the lateral limit of the waste at TP-2. Geosyntec took field measurements, prepared a log of the test-pit to include the field sketch of the exploratory test-pit wall.
1330 Started backfilling the test pit (TP -2) with the excavated materials. The excavated material was backfilled into the test-pit and compacted to a firm condition.
1350 Backfilling activities were completed at TP-2.
1355 Mobilized to TP-3 location.
1410 Excavation activities started at TP -3 location. The sod and topsoil were carefully removed. Excavation continued through the cover soil [visual classification in general accordance with ASTM D2488: Silty SAND (SM)]. 1420 Encountered waste at approximately 3 ft bgs at TP-3. Continued excavation towards the east to delineate the lateral limit of the waste.
1430 Could not reach the lateral limit of the waste due to proximity to electric utility lines toward the east. Geosyntec field staff contacted Karthik Viswanathan (Geosyntec) and discussed about backfilling the excavated test -pit at TP -3 and starting a new test-pit the following day at 2 ft away from the marked electric lines (towards the east). 1440 Started backfilling the test pit (TP-3) with the excavated materials. The excavated material was returned into the test-pit and compacted to a firm condition.
1510 Backfilling activities were completed at TP-3. AIS to excavate a new test-pit at TP-3 tomorrow. 1515 AIS started moving the field equipment to the parking lot. Drums, plywood panels, and other equipment were secured within the fence panels at the parking lot.
1520 Geosyntec air monitoring staff Eric Garcia departed the site. 1545 Geosyntec field staff Sneha U. departed the site.

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Thursday DATE: September 24, 2020
WEATHER: Sunny, High 76° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-002 - TRENCHING AND BACKFILLING - 9.24.2020 3 of 5

Start of excavation at TP-1 location (looking south). Waste encountered at TP-1. Also indicated is the exposed underground irrigation pipeline (looking southeast).

Lateral limit of waste at TP-1 (looking south) Backfilling at TP-1(looking northeast)

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Thursday DATE: September 24, 2020
WEATHER: Sunny, High 76° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-002 - TRENCHING AND BACKFILLING - 9.24.2020 4 of 5

Start of excavation at TP-2 location (looking north). Waste encountered at TP-2 and the lateral limit of waste (looking northeast).

Backfilling at TP-2; placing the vegetation back (looking northeast).

Start of excavation at TP-3 location (looking southeast).

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Thursday DATE: September 24, 2020
WEATHER: Sunny, High 76° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-002 - TRENCHING AND BACKFILLING - 9.24.2020 5 of 5

Waste encountered at TP-3 (looking east). Backfilling at TP-3 (looking southeast).

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 1 of 9 Time Field Work Activities
0650 Geosyntec field staff Sneha Upadhyaya and Eric Garcia arrived on site. 0700 Met with American Integrated Services (AIS) field crew and mobilized the equipment to TP-3 location to resume trenching activities at TP-3. Note that the trenching activities were discontinued at TP-3 on September 24 due to proximity to marked electric utility line.
0710 Plywood panels were placed on the ground to prevent potential rutting of the vegetation from the backhoe tires. Fence panels with wind screens were placed around the excavation area. Plastic tarps were placed for temporarily staging the excavated soil.
0715 Started excavation activities at TP-3 location 2 ft east of the marked electric utility line. Approximately 4 inches of sod and topsoil was removed carefully.
0720 Encountered the electric line at approximately 3.5 ft east of the marked utility line (1.5 ft from the western edge of the trench). Continued trenching from 1.5 ft away from the actual electric line (towards east). 0730 Encountered waste at about 3 ft bgs (dark grey Asphalt concrete debris, no odor) . Continued excavation to delineate the lateral limit of the waste.
0810 Trench extended up to the edge of the concrete slab. Waste was observed to extent underneath the concrete slab. Unable to delineate the lateral extent of the waste. Geosyntec took field measurements, prepared a log of the test-pit to include the field sketch of the exploratory test-pit wall.
0815 Started backfilling the test pit (TP -3) with the excavated materials. The excavated material was backfilled into the test-pit and compacted to a firm condition.
0830 Backfilling activities completed at TP-3.
0840 Mobilized to proposed TP-4 location.
0850 Excavation activities started at TP -4 location. The sod and topsoil were carefully removed. Excavation continued through the cover soil [visual classification in general accordance with ASTM D2488: Silty SAND (SM)]. 0855 Traces of Asphalt concrete observed at approximately 1.5 ft bgs. Some poorly graded fine sand (SP) was also observed at about 2 ft bgs (likely pipe bedding material).
0900 Encountered irrigation line (2 -in. PVC pipe) at approximately 1 ft 8 in bgs. The irrigation pipe was damaged during excavation activities.
0915 Started another test pit 1 ft south of the existing test-pit at TP-4. 0930 Encountered waste at about 3 ft 3 inches bgs at TP-4 (dark grey Asphalt concrete debris, no odor) . Continued excavation towards the east to delineate the lateral limit of the waste. 1025 Excavation was discontinued at approximately 3.5 ft away from the concrete slab due to close proximity to the marked utilities lines along the edge of the concrete slab. Unable to delineate the lateral extent of the waste. Geosyntec took field measurements, prepared a log of the test-pit to include the field sketch of the exploratory test-pit wall. 1030 AIS fixed the damaged irrigation pipe.

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 2 of 9 1055 Started backfilling at TP -4 with the excavated materials. The excavated material was backfilled into the test -pit and compacted to a firm condition.
1140 Backfilling activities were completed at TP-2. AIS stopped for lunch. 1215 AIS returned from lunch.
1220 City of Huntington Beach Park Development Division officials arrived at the site (Chris Slama et al.). 1230 Mobilized to proposed TP-5 location.
1250 Excavation activities started at TP -5 location. The sod and topsoil were carefully removed. Excavation continued through the cover soil [visual classification in general accordance with ASTM D2488: Silty SAND (SM)]. 1300 Encountered waste (Asphalt concrete debris) at 1 ft 8 in bgs. 1310 Decayed wood pieces encountered at 4 ft 2 in bgs (mild organic odor). 1330 Excavation activities were continued towards the east. Waste was observed consistently at about 2 ft below the ground surface along the length of the trench.
1400 Excavation activities were continued until the edge of concrete sidewalk was reached (45 ft from the western edge of the trench). Excavation activities were discontinued. Unable to determine the lateral extent of the waste. 1410 Started backfilling the test pit (TP -5) with the excavated materials. The excavated material was backfilled into the test-pit and compacted to a firm condition.
1500 Backfilling activities were completed at the excavated trench at TP-5. 1530 A pothole was excavated at about 35 ft away from the eastern edge of the TP-5 trench (past the sidewalks). Waste was observed at 2 ft bgs.
1540 Backfilled the pothole.
1545 AIS started demobilization activities.
1600 AIS and Geosyntec departed the site.

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 3 of 9

Resumption of excavation at TP-3 location (looking south). Electric utility pipe encountered at TP-3 (looking south).

Waste encountered at TP-3, waste continues underneath the concrete slab (looking east)
Backfilling at TP-3 (looking east)

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 4 of 9

Start of excavation at TP-4 location (looking northeast). Damaged irrigation pipe at TP-4 (looking northeast).

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 5 of 9

Excavation of second trench adjacent to the first trench at TP-4 (looking southeast).

Waste encountered at TP-4 (looking east).

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 6 of 9

Waste observed to continue underneath the concrete slab at TP-4 (looking south).

AIS repairing the damaged irrigation pipe at TP-4 (looking northwest).

Start of excavation at TP-5 (looking southeast). Waste encountered at TP-5 (looking south).

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 7 of 9

Waste materials at TP-5 (looking south). Trench wall face at TP-5 (looking south).

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 8 of 9

Waste material encountered at TP-5 (looking south). Pothole 35 ft east of excavated trench at TP-5 and observation of waste (looking west).

DAILY FIELD REPORT Report Sequence No.:003
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Trenching and Backfilling CONTRACTOR: American Integrated Services, Inc.

DAY OF WEEK: Friday DATE: September 25, 2020
WEATHER: Sunny, High 78° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-003 - TRENCHING AND BACKFILLING - 9.25.2020 9 of 9

Backfilling the pothole at TP-5 (looking northwest).

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 1 of 9
Time Field Work Activities
0650 Geosyntec field staff Sneha Upadhyaya arrived on site. 0655 Geosyntec air monitoring staff Eric Garcia arrived on site. 0705 ABC Liovin Drilling (ABC) arrived on site. Met with ABC crew Julio Gutierrez and Jimmy Candelaria. 0710 Discussed the plan for the day and walked to the first hollow stem auger location (HS A-5) to check the equipment access route.
0715 Conducted a brief safety meeting with ABC. ABC acknowledged the THA. 0730 Mobilized to proposed HSA-5 location.
0750 ABC carefully removed the top soil and vegetation. Hand augered the top 5 ft of soil. 0800 Encountered waste at approximately 2.5 ft bgs (dark gray Asphalt concrete debris, no odor). Continued hand augering. The soil cuttings were placed in 55-gallon drums.
0820 Started HSA drilling with CME85 drill rig. Mild organic odor at 8 ft bgs. 0825 Hard drilling observed at approximately 12 ft bgs. Some brick debris observed in the spoil. 0830 Observed wet spoil at approximately 18 ft indicative of reaching the ground water table (GWT). Measured the depth to the GWT to approximately 12 ft bgs.
0845 ABC project manager Bill Borgo on site.
0900 First split spoon sample collected at 30 – 31.5 ft bgs. Sample indicative of the presence of waste (dark gray, wet, with pieces of decayed wood, mild organic odor).
0905 Observed hard drilling (rattling of auger) at approximately 32 ft bgs. Advanced through the hard material at approximately 34 ft bgs.
0920 City of Huntington Beach Park Development Division official Farhad Bolourchi arrived at the site. 0930 Unsuccessful attempt to collect a split spoon sample at 35 to 36.5 ft bgs (no recovery, sample too soft). Second attempt was made to collect sample at 38-39.5 ft bgs, still unsuccessful. 0935 Third attempt was made to collect the sample at 40 to 41.5 ft bgs. The sample indicated the end of waste and beginning of native soil at approximately 40.5 ft bgs. Native soil was visually classified as Silty SAND (SM) in general accordance with ASTM D2488.
0940 HSA drilling terminated at 41.5 ft bgs.
0945 Geosyntec Senior Engineer Yonas Zemuy arrived at the site. 0950 Started backfilling the borehole at HSA-5 with hydrated bentonite chips. 1015 Mr. Bolourchi departed the site.
1025 Mr. Zemuy departed the site.
1030 Completed backfilling the borehole at HSA -5. The upper 6 inches were covered with top soil and vegetation. Mr. Borgo departed the site.

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 2 of 9
1035 Mobilized to proposed HSA-4 location.
1050 ABC carefully removed the top soil and vegetation. Hand augered the top 5 ft of soil at HSA-4. 1055 Encountered waste at approximately 2 ft bgs (dark gray asphalt concrete debris, no odor). Continued hand augering. The soil cuttings were placed in 55-gallon drums.
1105 Started HSA drilling with CME85 drill rig.
1110 Encountered GWT; the depth to GWT was measured to be approximately 8 ft bgs. 1115 Hard drilling (rattling and rumbling of auger) observed starting at approximately 16 ft bgs. 1130 Hard drilling continues at approximately 25 ft bgs. Auger tilting observed. Little to no spoil observed starting at this depth. 1140 Damage to the wire connecting the sampling barrel assembly to the lead auger. 1150 ABC repaired the wire damage and continued drilling. 1200 Hard drilling continues at 30 ft bgs, little to no spoil observed at the ground surface. 1215 Continued attempt to drill past 30 ft bgs. Very slow advancement of the auger. 1235 At 34 ft bgs, auger tilting observed. Unable to drill past 34 ft. 1240 Terminated boring at 34 ft bgs.
1245 Retrieved the auger. The lead auger was plugged with wood. The wood had mild organic odor. 1300 Started backfilling the borehole at HSA-4 with hydrated bentonite chips. 1335 Completed backfilling the borehole at HSA-4. The upper 6 inches were covered with top soil and vegetation. 1345 Mobilized to HSA-3.
1355 ABC carefully removed the top soil and vegetation. Hand augered the top 5 ft of soil at HSA-3. 1405 Encountered waste at approximately 2.5 ft bgs (dark gray Asphalt concrete debris, no odor). Continued hand augering. The soil cuttings were placed in 55-gallon drums.
1415 Started HSA drilling with CME85 drill rig.
1420 Encountered GWT; the depth to GWT was measured to be approximately 11 ft bgs. 1430 First split spoon sample collected at 15 – 16.5 ft bgs. Observed material with a different texture than the overlying waste material (Visual classification: Sandy CLAY, dark gray, wet, medium to high plasticity, no odor), likely an interim soil cover layer.
1440 Second split spoon sample collected at 20 to 21.5 ft bgs. The sample indicated the end of waste and beginning of native soil at approximately 20.5 ft bgs. Native soil was visually classified as Poorl y graded SAND with silt (SP-SM) in general accordance with ASTM D2488.
1445 Terminated boring HSA-3 at 21.5 ft bgs.
1450 Started backfilling the borehole at HSA-3 with hydrated bentonite chips. 1510 Completed backfilling the borehole at HSA-3. The upper 6 inches were covered with top soil and vegetation.

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 3 of 9
1515 Mobilized to proposed HSA-2 location.
1530 ABC carefully removed the top soil and vegetation. Hand augered the top 5 ft of soil at HSA-2. 1535 Encountered waste at approximately 2.7 ft bgs (dark gray Asphalt concrete debris, no odor). Continued hand augering. The soil cuttings were placed in 55-gallon drums.
1540 Started HSA drilling at HSA-2 with CME85 drill rig. 1545 Split spoon sample collected at 15 – 16.5 ft bgs. The sample indicated the end of waste and beginning of native soil at approximately 15.5 ft bgs. Native soil was visually classified as Silty SAND (SM) in general accordance with ASTM D2488. 1550 Terminated boring HSA-2 at 16.5 ft bgs. Started backfilling at HSA-2. 1600 Completed backfilling HSA-2.
1615 Mobilized to HSA-1.
1620 ABC carefully removed the top soil and vegetation. Hand augered the top 5 ft of soil at HSA-1. 1630 Encountered waste at approximately 3.5 ft bgs (dark gray Asphalt concrete debris, no odor). Continued hand augering. The soil cuttings were placed in 55-gallon drums.
1640 Started HSA drilling at HSA-1 with CME85 drill rig. 1645 Split spoon sample collected at 10 – 11.5 ft bgs. The sample indicated the end of waste and beginning of native soil at approximately 10.3 ft bgs. Native soil was visually classified as Silty SAND (SM) in general accordance with ASTM D2488. 1650 Depth to GWT measured to be at approximately 10.5 ft bgs. 1655 Terminated boring HSA-1 at 11.5 ft bgs.
1700 Started backfilling at HSA-1.
1710 Completed backfilling at HSA-1.
1715 Geosyntec air monitoring staff Eric G. departed the site. 1720 ABC crew Julio G. departed the site.
1730 ABC crew Jimmy C. helped store the drums at the backyard of Edison Park Community Center, pending analysis and disposal.
1740 ABC crew Jimmy departed the site.
1745 Geosyntec field staff Sneha Upadhyaya departed the site

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 4 of 9

Removal of top soil and vegetation at HSA-5 (looking northeast). Waste encountered at HSA-5 (looking northwest).

First split spoon sample collected at 30 – 31.5 ft bgs at HSA-5.

Sample indicates of the presence of waste.

Split spoon sample collected at 40 – 41.5 ft bgs at HSA-5. The interface between the waste and native soil is indicated.

Piece of wood

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 5 of 9

Backfilling the borehole at HSA-5 (looking northeast). Waste encountered at HSA-4 (looking northwest).

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 6 of 9

Damage to the wire connecting the sampling barrel assembly to the lead auger at HSA-4; ABC fixing the wire (looking west).

Tilting of auger at HSA-4 (looking west).

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 7 of 9

Spoil (wood debris) retrieved from the auger at HSA-4. Wood plugged in the lead auger at HSA-4.

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 8 of 9

Waste observed in the soil cuttings at HSA-3 (looking northeast). Split spoon sample collected at 20 to 21.5 ft bgs at HSA-3. The interface between the waste and native soil is indicated.

DAILY FIELD REPORT Report Sequence No.:004
PROJECT: Edison Park Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685A TASK NO.: 02 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Monday DATE: September 28, 2020
WEATHER: Sunny, High 82° Low 64°

Printed Name: Sneha Upadhyaya Signature
DFR-004 - HSA DRILLING - 9.28.2020 9 of 9

Waste material observed in the spoil at HSA-2 (looking
northeast).

Split spoon sample collected at 15 – 16.5 ft bgs at HSA-2. The interface between the waste and native soil is indicated.

Waste material observed at HSA-1 (looking northwest). Split spoon sample collected at 10 – 11.5 ft bgs at HSA-1. The interface between the waste and native soil is indicated.

DAILY FIELD REPORT Report Sequence No.:001
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Geophysical Survey for Locating Utilities CONTRACTOR: GEOVision, Inc., DAY OF WEEK: Thursday DATE: March 11, 2021
WEATHER: Sunny, High 64° Low 55°

Printed Name: Sneha Upadhyaya Signature
DFR-001 - GEOPHYSICAL UTILITY CLEARANCE - 3.11.2021 1 of 3 Time Field Work Activities
0700 Arrived on site and met with GEOVision field crew J. Weiss and J. Foster. 0705 Held a brief tailgate safety meeting. GEOVision crew acknowledged the THA. 0710 Performed a site walk with GEOVision crew to observe the proposed investigation locations (HSA-1A through HSA-8A). 0720 GEOVision started utility clearance survey at proposed location of HSA-1A using the RD 8000 electromagnetic utility locater, Fisher TW -6 deep search pipe locator/metal detector, 60 HDZ, SIR3000 Ground Penetrating Radar, and walk in tandem. No conflicts were found at HSA-1A.
0730 GEOVision performed utility clearance survey at proposed location of HSA-2A boring. No conflicts were found at HSA - 2A location.
0745 GEOVision performed utility clearance survey at location of HSA-3A. Unknown anomalies were detected at the location of HSA-3A. GEOVision marked a new HSA-3A location 3 ft west of the existing location. 0800 GEOVision performed utility clearance survey at proposed location of HSA -4A boring. High voltage electrical lines and other unknown anomalies were detected within 5 ft of HSA-4A location. GEOVision marked a new HSA -4A location 3 ft north of the existing location.
0815 GEOVision performed utility clearance survey at proposed location of HSA-5A. Electrical lines were detected conflicting with the proposed HSA-5A location. GEOVision marked a new HSA-5A location 5.5 ft west of the existing location. 0825 GEOVision performed utility clearance survey at proposed location of HSA-6A. Some anomalies were detected within 5 ft of the HSA-6A location. GEOVision marked a new location 1.5 ft north of the existing location. 0840 GEOVision performed utility clearance survey at proposed location of HSA -7A. No conflicts were found at HSA -7A location.
0850 GEOVision performed utility clearance survey at HSA-8A location. Unknown utilities were detected conflicting with the HSA-8A location. GEOVision marked a new location 2.5 ft south of the existing location 0915 Geosyntec and GEOVision departed the site for the day.

DAILY FIELD REPORT Report Sequence No.:001
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Geophysical Survey for Locating Utilities CONTRACTOR: GEOVision, Inc., DAY OF WEEK: Thursday DATE: March 11, 2021
WEATHER: Sunny, High 64° Low 55°

Printed Name: Sneha Upadhyaya Signature
DFR-001 - GEOPHYSICAL UTILITY CLEARANCE - 3.11.2021 2 of 3

Location HSA-1A cleared of utilities (looking north) Location HSA-2A cleared of utilities (looking north)

Marked anomalies at HSA-3A and the new HSA-3A
location (looking north)
Marked utilities at HSA-4A and the new HSA-4A location
(looking north)

DAILY FIELD REPORT Report Sequence No.:001
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Geophysical Survey for Locating Utilities CONTRACTOR: GEOVision, Inc., DAY OF WEEK: Thursday DATE: March 11, 2021
WEATHER: Sunny, High 64° Low 55°

Printed Name: Sneha Upadhyaya Signature
DFR-001 - GEOPHYSICAL UTILITY CLEARANCE - 3.11.2021 3 of 3

Electrical utility markings at existing HSA-5A and the
new HSA-5A location (looking north)
Marked anomalies at HSA-6A and the new HSA-6A
location (looking north)

Location HSA-7A cleared of utilities (looking north) Marked anomalies at HSA-8 and the new HSA-8A location (looking north)

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Friday DATE: March 12, 2021
WEATHER: Sunny, High 68° Low 52°

Printed Name: Sneha Upadhyaya and Karthik Viswanathan Signature DFR-002 - HSA DRILLING - 3.12.2021 1 of 8
Time Field Work Activities
0650 Geosyntec field staff Sneha Upadhyaya arrived on site. 0705 ABC Liovin Drilling (ABC) arrived on site. Met with ABC crew N. De La Torres and C. Villicana. 0715 Conducted a brief safety meeting with ABC. ABC acknowledged the THA. Discussed the scope of work and plan for the day.
0720 Mobilized to proposed HSA-7A location.
0750 ABC started drilling through the concrete at HSA-7A. Hand augered the top 5 ft of soil. The soil cuttings were placed in 55- gallon drums.
0810 Started HSA drilling with CME85 drill rig.
0825 Split spoon sample collected at 10 – 11.5 ft bgs.
0830 Encountered GWT; the depth to GWT was measured to be approximately 13.5 ft bgs. 0835 Terminated boring HSA-7A at approximately 18 ft bgs. 0850 Backfilled the borehole at HSA-7A with hydrated bentonite chips and patched the surface with rapid setting concrete. 0900 Bill Borgo from ABC arrived at the site.
0915 Mobilized to proposed HSA-8A location.
0920 Bill Borgo departed the site.
0925 ABC started drilling through the concrete and noticed 2 distinct layers of concrete. ABC informed that this could be indicative of potential utilities underneath the concrete slab and this decided to move the drilling locatio n approximately 5 ft south of the originally proposed HSA-8A location.
0950 ABC started drilling through the concrete at the new HSA-8A location. Hand augered the top 5 ft of soil. The soil cuttings were placed in 55-gallon drums.
1015 Started HSA drilling at HSA-8A with CME85 drill rig. 1020 First split spoon sample collected at 10 – 11.5 ft bgs. 1025 Encountered GWT; the depth to GWT was measured to be approximately 12.5 ft bgs. 1030 A second split spoon sample was collected at 15 – 16.5 ft bgs. 1035 Terminated boring HSA-8A at 16.5 ft bgs.
1100 Backfilled the borehole at HSA-8A with hydrated bentonite chips and patched the surface with rapid setting concrete. 1115 Mobilized to HSA-3A.
1120 ABC started drilling through the concrete at the HSA-3A location. Hand augered the top 5 ft of soil. The soil cuttings were placed in 55-gallon drums.
1145 Started HSA drilling at HSA-3A with CME85 drill rig. 1200 First split spoon sample collected at 10 – 11.5 ft bgs.

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Friday DATE: March 12, 2021
WEATHER: Sunny, High 68° Low 52°

Printed Name: Sneha Upadhyaya and Karthik Viswanathan Signature DFR-002 - HSA DRILLING - 3.12.2021 2 of 8
1210 A second split spoon sample was collected at 15 – 16.5 ft bgs. 1215 Encountered GWT; the depth to GWT was measured to be approximately 15 ft bgs. 1220 Terminated boring HSA-3A at 16.5 ft bgs.
1240 Backfilled the borehole at HSA-3A with hydrated bentonite chips and patched the surface with rapid setting concrete. 1250 Mobilized to HSA-2A.
1305 ABC started drilling through the concrete at the HSA-2A location. Hand augered the top 5 ft of soil. The soil cuttings were placed in 55-gallon drums.
1325 Started HSA drilling at HSA-2A with CME85 drill rig. 1340 First split spoon sample collected at 10 – 11.5 ft bgs. 1345 A second split spoon sample was collected at 15 – 16.5 ft bgs. 1350 Terminated boring HSA-2A at 16.5 ft bgs. No groundwater was encountered at this location. 1410 Backfilled the borehole at HSA-2A with hydrated bentonite chips and patched the surface with rapid setting concrete. 1420 Mobilized to HSA-4A.
1430 ABC started drilling through the concrete at the HSA-4A location. Hand augered the top 5 ft of soil. The soil cuttings were placed in 55-gallon drums.
1450 Started HSA drilling at HSA-4A with CME85 drill rig. 15:15 First split spoon sample collected at 10 – 11.5 ft bgs. 15:20 Encountered GWT; the depth to GWT was measured to be approximately 14.1 ft bgs. 15:25 A second split spoon sample was collected at 15 – 16.5 ft bgs. 1530 Terminated boring HSA-4A at 16.5 ft bgs.
1545 Backfilled the borehole at HSA-4A with hydrated bentonite chips and patched the surface with rapid setting concrete. 1555 Mobilized to HSA-5A.
1600 ABC started drilling through the concrete at the HSA-5A location. Hand augered the top 5 ft of soil. The soil cuttings were placed in 55-gallon drums.
1625 Started HSA drilling at HSA-4A with CME85 drill rig. 1630 K. Viswanathan (Geosyntec) arrived on-site.
1645 First split spoon sample collected at 10 – 11.5 ft bgs. 1650 A second split spoon sample was collected at 15 – 16.5 ft bgs. 1655 Encountered GWT; the depth to GWT was measured to be approximately 16.6 ft bgs. 1700 Terminated boring HSA-5A at 17 ft bgs.
1710 Mobilized to HSA-6A.

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Friday DATE: March 12, 2021
WEATHER: Sunny, High 68° Low 52°

Printed Name: Sneha Upadhyaya and Karthik Viswanathan Signature DFR-002 - HSA DRILLING - 3.12.2021 3 of 8
1715 Backfilled the borehole at HSA-5A with hydrated bentonite chips and patched the surface with rapid setting concrete.

ABC started drilling through the concrete at the HSA-6A location. Hand augered the top 5 ft of soil. The soil cuttings were placed in 55-gallon drums.
1720 S. Upadhyaya (Geosyntec) departed the site.
1730 Started HSA drilling at HSA-3A with CME85 drill rig. 1735 First split spoon sample collected at 10 – 11.5 ft bgs. 1745 A second split spoon sample was collected at 15 – 16.5 ft bgs. 1800 Terminated boring HSA-6A at 16.5 ft bgs. No groundwater was encountered at this location. 1805 Backfilled the borehole at HSA-5A with hydrated bentonite chips and patched the surface with rapid setting concrete. 1830 ABC moved the 55-gallon drums (7 drums) within the fenced construction area south of the investigation area. 1845 Geosyntec and ABC personnel departed the site.

Drilling through concrete slab at HSA-7A (looking southeast) Hand augering at HSA-7A (looking east)

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Friday DATE: March 12, 2021
WEATHER: Sunny, High 68° Low 52°

Printed Name: Sneha Upadhyaya and Karthik Viswanathan Signature DFR-002 - HSA DRILLING - 3.12.2021 4 of 8

Change in material observed in the drill cuttings at HSA-7A (looking east)
Split spoon sample collected at 10 – 11.5 ft bgs at HSA-7A.

Backfilling the borehole at HSA-7A with hydrated bentonite chips (looking southeast)
Surface patching with rapid set concrete at HSA-7A (looking southwest)

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Friday DATE: March 12, 2021
WEATHER: Sunny, High 68° Low 52°

Printed Name: Sneha Upadhyaya and Karthik Viswanathan Signature DFR-002 - HSA DRILLING - 3.12.2021 5 of 8

Change in material observed in the drill cuttings at HSA-8A at approximately 2.5 ft bgs
Split spoon sample collected at 10 – 11.5 ft bgs at HSA-8A.

Split spoon sample collected at 10 – 11.5 ft bgs at HSA-3A. Split spoon sample collected at 15 – 16.5 ft bgs at HSA-3A.

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Friday DATE: March 12, 2021
WEATHER: Sunny, High 68° Low 52°

Printed Name: Sneha Upadhyaya and Karthik Viswanathan Signature DFR-002 - HSA DRILLING - 3.12.2021 6 of 8

Split spoon sample collected at 10 – 11.5 ft bgs at HSA-2A. Split spoon sample collected at 15 – 16.5 ft bgs at HSA-2A.

Wood debris observed in the drill cuttings at HSA-4A Brick pieces observed in the drill cuttings at HSA-4A

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Friday DATE: March 12, 2021
WEATHER: Sunny, High 68° Low 52°

Printed Name: Sneha Upadhyaya and Karthik Viswanathan Signature DFR-002 - HSA DRILLING - 3.12.2021 7 of 8

Split spoon sample collected at 10 – 11.5 ft bgs at HSA-4A. Split spoon sample collected at 15 – 16.5 ft bgs at HSA-4A.

Split spoon sample collected at 10 – 11.5 ft bgs at HSA-5A. Split spoon sample collected at 15 – 16.5 ft bgs at HSA-5A.

DAILY FIELD REPORT Report Sequence No.:002
PROJECT: Edison Park Additional Waste Delineation
LOCATION: Huntington Beach, California PROJECT NO.: HL1685B TASK NO.: 01 DESCRIPTION: Hollow-Stem Auger (HSA) drilling CONTRACTOR: ABC Liovin Drilling DAY OF WEEK: Friday DATE: March 12, 2021
WEATHER: Sunny, High 68° Low 52°

Printed Name: Sneha Upadhyaya and Karthik Viswanathan Signature DFR-002 - HSA DRILLING - 3.12.2021 8 of 8

Split spoon sample collected at 10 – 11.5 ft bgs at HSA-6A. Split spoon sample collected at 15 – 16.5 ft bgs at HSA-6A.

HL1685B\Edison Park Waste Delineation Final Report

Appendix F
Air Monitoring Logs

Time1,4 Ambient
Temp2,4 Wind Speed2,4 Wind
Direction3,4 Time1,4 Ambient
Temp2,4 Wind Speed2,4 Wind
Direction3,4
8:00 65 3.5 W 14:00 77 2.4 NW
8:20 65 5.1 W 14:15 77 2.7 NW
8:35 66 3.6 W 14:30 77 5.8 NW
8:50 66 1.8 W 14:45 77 5.4 NW
9:00 66 1.7 NW 15:00 77 4 NW
9:15 66 1.9 NW
9:30 67 0.8 E
9:45 67 1.3 E
10:00 69 1.6 E
10:15 70 2.4 NW
10:30 70 2.4 W
10:45 71 3.1 W
11:00 72 3.9 NW
11:15 72 4.1 NW
11:30 74 3.5 NW
11:45 74 5.3 NW
12:00 74 3.1 NW
12:15 74 3.4 W
12:30 73 3 W
12:45 73 2.8 W
13:00 74 4.4 NW
13:15 76 2.8 NW
13:30 77 1.9 NW
13:45 78 1.5 NW
3 - Wind Direction from KCAHUNT143 weather station
4 - Collect Readings Every 15 Minutes
Daily Local Weather Monitoring Log - 09/24/2020
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
1 - Pacific Daylight Time (PDT)
2 - Ambient Temperature (℉), and Wind Speed (miles/hour) - measured using Kestrel 4000 and from KCAHUNT143 weather statio Time1,4 Ambient
Temp2,4 Wind Speed2,4 Wind
Direction3,4 Time1,4 Ambient
Temp2,4 Wind Speed2,4 Wind
Direction3,4
7:15 65 2 NW 13:15 77 6.4 N
7:30 65 0.9 NW 13:30 76 5.4 N
7:45 66 2.1 W 13:45 76 5.1 NW
8:00 67 2.7 SW 14:00 75 4.8 NW
8:15 67 0.9 NW 14:15 75 6.7 NE
8:30 67 1.4 NW 14:30 74 6.1 NE
8:45 67 2.3 NW 14:45 74 5.4 NE
9:00 68 3.1 NW 15:00 74 4.5 NE
9:15 68 1.5 SW 15:15 74 4.8 NE
9:30 69 2.6 NW 15:30 74 5.1 N
9:45 69 2.1 NW
10:00 70 3.5 NW
10:15 72 3.6 NW
10:30 72 2.6 NW
10:45 72 3.4 NW
11:00 72 2.7 SW
11:15 72 2.1 W
11:30 74 2.5 NW
11:45 75 3.9 NW
12:00 75 3 NW
12:15 75 3.8 NW
12:30 76 3.5 NW
12:45 76 6 NW
13:00 76 5.2 N
4 - Collect Readings Every 15 Minutes
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
Daily Local Weather Monitoring Log - 09/25/2020
1 - Pacific Daylight Time (PDT)
2 - Ambient Temperature (℉), and Wind Speed (miles/hour) - measured using Kestrel 4000 and from KCAHUNT143 weather statio 3 - Wind Direction from KCAHUNT143 weather station
Time1,4 Ambient
Temp2,4 Wind Speed2,4 Wind
Direction3,4 Time1,4 Ambient
Temp2,4 Wind Speed2,4 Wind
Direction3,4
7:45 66 1 E 13:45 81 5.7 NE
8:00 66 1.2 E 14:00 81 5.1 NE
8:15 66 1.3 E 14:15 81 9 NE
8:30 68 1.7 NE 14:30 80 7.7 NE
8:45 70 1.9 NW 14:45 79 7.5 NE
9:00 70 2.2 NW 15:00 79 8.9 NE
9:15 70 2.5 W 15:15 78 3.3 NE
9:30 72 1.4 W 15:30 77 4.4 NE
9:45 72 2.5 SW 15:45 77 9.2 NE
10:00 72 1.2 SW 16:00 76 5.4 NE
10:15 73 1.8 SW 16:15 76 8 NE
10:30 73 2.1 SW 16:30 76 7.9 NE
10:45 73 2.5 NE 16:45 76 7.4 NE
11:00 74 4.2 NE 17:00 75 5.4 NE
11:15 75 3.8 NE
11:30 75 3.4 NE
11:45 75 3 NE
12:00 78 5.5 NE
12:15 78 4.8 NE
12:30 81 6.5 NE
12:45 81 5.4 NE
13:00 81 5.2 NE
13:15 81 4.4 NE
13:30 81 5.2 NE
4 - Collect Readings Every 15 Minutes
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
Daily Local Weather Monitoring Log - 09/28/2020
1 - Pacific Daylight Time (PDT)
2 - Ambient Temperature (℉), and Wind Speed (miles/hour) - measured using Kestrel 4000 and from KCAHUNT143 weather statio 3 - Wind Direction from KCAHUNT143 weather station
Date Time1 Location2 Equipment
ID3
Equipment
Operator
Reading
(mg/m3)4 Comments
24-Sep-20 8:00 TP-1 FA02926 EG 0.113 Background
24-Sep-20 8:05 UW FA02926 EG 0.089
24-Sep-20 8:12 DW FA02926 EG 0.093
24-Sep-20 9:00 UW FA02926 EG 0.055
24-Sep-20 9:10 DW FA02926 EG 0.075
24-Sep-20 10:00 UW FA02926 EG 0.061
24-Sep-20 10:10 DW FA02926 EG 0.059
24-Sep-20 11:00 UW FA02926 EG 0.023
24-Sep-20 11:05 DW FA02926 EG 0.062
24-Sep-20 11:15 Stop excavating
24-Sep-20 13:10 DW FA02926 EG 0.036
24-Sep-20 13:20 UW FA02926 EG 0.037 Stop excavating mob to TP-3 24-Sep-20 14:20 DW FA02926 EG 0.027
24-Sep-20 14:25 UW FA02926 EG 0.022 Stop excavating
25-Sep-20 7:15 TP-3 FA02926 EG 0.059 Background
25-Sep-20 7:21 UW FA02926 EG 0.039
25-Sep-20 7:26 DW FA02926 EG 0.041
25-Sep-20 8:15 Stop excavation at TP-2
25-Sep-20 8:53 Start excavation at TP-4
25-Sep-20 8:58 DW FA02926 EG 0.043
25-Sep-20 9:03 UW FA02926 EG 0.041
25-Sep-20 9:58 DW FA02926 EG 0.053
25-Sep-20 10:05 UW FA02926 EG 0.047
25-Sep-20 11:08 DW FA02926 EG 0.048
25-Sep-20 11:18 UW FA02926 EG 0.035 Start backfilling at TP-4 25-Sep-20 12:50 Start excavating TP-5
25-Sep-20 12:55 DW FA02926 EG 0.039
25-Sep-20 13:00 UW FA02926 EG 0.045
25-Sep-20 14:05 DW FA02926 EG 0.037
25-Sep-20 14:15 UW FA02926 EG 0.058
25-Sep-20 15:10 DW FA02926 EG 0.041
25-Sep-20 15:20 UW FA02926 EG 0.049
28-Sep-20 7:45 DW FA02926 EG 0.081 Background
28-Sep-20 7:50 UW FA02926 EG 0.088
28-Sep-20 8:00 DW FA02926 EG 0.095
28-Sep-20 8:08 UW FA02926 EG 0.097
28-Sep-20 9:05 DW FA02926 EG 0.076
28-Sep-20 9:10 UW FA02926 EG 0.09
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
Daily Particulate Matter (PM) Monitoring Log
1 of 2
Date Time1 Location2 Equipment
ID3
Equipment
Operator
Reading
(mg/m3)4 Comments
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
Daily Particulate Matter (PM) Monitoring Log
28-Sep-20 9:35 Stop boring at HSA5
28-Sep-20 10:55 Start boring at HSA4
28-Sep-20 11:00 DW FA02926 EG 0.099
28-Sep-20 11:05 UW FA02926 EG 0.097
28-Sep-20 12:00 DW FA02926 EG 0.088
28-Sep-20 12:08 UW FA02926 EG 0.092
28-Sep-20 13:05 Stop boring at HSA4
28-Sep-20 14:15 DW FA02926 EG 0.059
28-Sep-20 14:25 UW FA02926 EG 0.078
28-Sep-20 15:20 UW FA02926 EG 0.058
28-Sep-20 15:30 DW FA02926 EG 0.065
28-Sep-20 15:45 Stop boring at HSA2
28-Sep-20 16:45 DW FA02926 EG 0.078
28-Sep-20 16:50 UW FA02926 EG 0.052
Notes:
4 - Recorded every 60 minutes, when soil handling or excavation is in progress 3 - DustTRAK DRX Handheld Aerosol
1 - Pacific Daylight Time (PDT)
2 - Upwind or Downwind (perimeter)
2 of 2
Date Time1 Location2 Equipment
ID3
Equipment
Operator
Reading
(ppm)4 Comments
24-Sep-20 8:00 TP-1 FA02533 EG 0
24-Sep-20 8:12 DW FA02533 EG 0
24-Sep-20 8:20 TP-1 FA02533 EG 0
24-Sep-20 8:28 DW FA02533 EG 0
24-Sep-20 8:35 TP-1 FA02533 EG 0
24-Sep-20 8:40 DW FA02533 EG 0
24-Sep-20 8:47 TP-1 FA02533 EG 0
24-Sep-20 8:55 DW FA02533 EG 0
24-Sep-20 9:00 TP-1 FA02533 EG 0
24-Sep-20 9:10 DW 0
24-Sep-20 9:15 TP-1 FA02533 EG 0
24-Sep-20 9:20 DW FA02533 EG 0
24-Sep-20 9:30 TP-1 FA02533 EG 0
24-Sep-20 9:35 DW FA02533 EG 0
24-Sep-20 9:45 TP-1 FA02533 EG 0
24-Sep-20 9:55 DW FA02533 EG 0.2
24-Sep-20 10:00 TP-1 FA02533 EG 0.1
24-Sep-20 10:10 DW FA02533 EG 0
24-Sep-20 10:15 TP-1 FA02533 EG 0.1
24-Sep-20 10:30 DW FA02533 EG 0.1
24-Sep-20 10:35 TP-1 FA02533 EG 0.1
24-Sep-20 10:45 DW FA02533 EG 0.1
24-Sep-20 10:50 TP-1 FA02533 EG 0.1
24-Sep-20 11:05 DW FA02533 EG 0.1
24-Sep-20 11:15 TP-1 FA02533 EG 0.1
24-Sep-20 11:25 DW FA02533 EG 0.1
24-Sep-20 11:30 TP-1 FA02533 EG 0.1
24-Sep-20 11:40 DW FA02533 EG 0.1
24-Sep-20 11:45 TP-1 FA02533 EG 0.1
24-Sep-20 11:50 Stop excavation
24-Sep-20 13:05 TP-2 FA02533 EG 0
24-Sep-20 13:10 DW FA02533 EG 0
24-Sep-20 13:20 TP-2 FA02533 EG 0
24-Sep-20 13:30 DW FA02533 EG 0
24-Sep-20 13:35 TP-2 FA02533 EG 0
24-Sep-20 13:45 DW FA02533 EG 0.1
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
Daily Total Organic Compounds (TOC) Monitoring Log
1 of 4
Date Time1 Location2 Equipment
ID3
Equipment
Operator
Reading
(ppm)4 Comments
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
Daily Total Organic Compounds (TOC) Monitoring Log
24-Sep-20 13:50 TP-2 FA02533 EG 0.1 Stop excavation mob to TP-3 24-Sep-20 14:15 TP-3 FA02533 EG 0.1
24-Sep-20 14:20 DW FA02533 EG 0.1
24-Sep-20 14:30 TP-3 FA02533 EG 0.1
24-Sep-20 14:40 DW FA02533 EG 0.1
24-Sep-20 14:45 TP-3 FA02533 EG 0.1
24-Sep-20 14:55 DW FA02533 EG 0
24-Sep-20 15:00 TP-3 FA02533 EG 0.1 Stop excavation at TP-3 25-Sep-20 7:15 TP-3 FA02533 EG 0.1 Start excavation at TP-3 25-Sep-20 7:26 DW FA02533 EG 0.1
25-Sep-20 7:30 TP-3 FA02533 EG 0.2
25-Sep-20 7:35 DW FA02533 EG 0.3
25-Sep-20 7:45 TP-3 FA02533 EG 0.1
25-Sep-20 7:50 DW FA02533 EG 0.2
25-Sep-20 8:00 TP-3 FA02533 EG 0.1
25-Sep-20 8:10 DW FA02533 EG 0.1
25-Sep-20 8:15 TP-3 FA02533 EG 0.1 Stop excavation at TP-3. Mob to TP-4 25-Sep-20 8:53 TP-4 FA02533 EG 0.2
25-Sep-20 8:58 DW FA02533 EG 0.2
25-Sep-20 9:10 TP-4 FA02533 EG 0.2
25-Sep-20 9:15 DW FA02533 EG 0.1
25-Sep-20 9:25 TP-4 FA02533 EG 0.2
25-Sep-20 9:30 DW FA02533 EG 0.1
25-Sep-20 9:40 TP-4 FA02533 EG 0.2
25-Sep-20 9:45 DW FA02533 EG 0.2
25-Sep-20 9:55 TP-4 FA02533 EG 0.2
25-Sep-20 10:00 DW FA02533 EG 0.1
25-Sep-20 10:15 TP-4 FA02533 EG 0.1
25-Sep-20 10:20 DW FA02533 EG 0.1
25-Sep-20 10:30 TP-4 FA02533 EG 0.1 Stop excavation at TP-4 and begin backfilling 25-Sep-20 10:55 TP-4 FA02533 EG 0.1
25-Sep-20 11:00 DW FA02533 EG 0.1
25-Sep-20 11:05 TP-4 FA02533 EG 0.1
25-Sep-20 11:15 DW FA02533 EG 0.1
25-Sep-20 12:50 TP-4 FA02533 EG 0.1
25-Sep-20 12:55 DW FA02533 EG 0.1 Finished backfilling TP-4 2 of 4
Date Time1 Location2 Equipment
ID3
Equipment
Operator
Reading
(ppm)4 Comments
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
Daily Total Organic Compounds (TOC) Monitoring Log
25-Sep-20 13:05 TP-5 FA02533 EG 0.1 Start excavation at TP-5 25-Sep-20 13:10 DW FA02533 EG 0.1
25-Sep-20 13:20 TP-5 FA02533 EG 0.2
25-Sep-20 13:30 DW FA02533 EG 0.1
25-Sep-20 13:35 TP-5 FA02533 EG 0.2
25-Sep-20 13:50 DW FA02533 EG 0.1
25-Sep-20 13:55 TP-5 FA02533 EG 0.2
25-Sep-20 14:05 DW FA02533 EG 0.1
25-Sep-20 14:10 TP-5 FA02533 EG 0.2 Begin backfilling at TP-5 25-Sep-20 14:25 DW FA02533 EG 0.1
25-Sep-20 14:40 TP-5 FA02533 EG 0.1
25-Sep-20 15:15 TP-5 FA02533 EG 0.1 Excavate small trench 25-Sep-20 15:25 DW FA02533 EG 0.1
25-Sep-20 15:30 TP-5 FA02533 EG 0.1 Backfill done
28-Sep-20 7:45 DW FA02533 EG 0.1
28-Sep-20 7:55 HSA5 FA02533 EG 0.1
28-Sep-20 8:00 DW FA02533 EG 0.2
28-Sep-20 8:10 HSA5 FA02533 EG 0.2
28-Sep-20 8:15 DW FA02533 EG 0.2
28-Sep-20 8:25 HSA5 FA02533 EG 0.4
28-Sep-20 8:30 DW FA02533 EG 0.2
28-Sep-20 8:40 HSA5 FA02533 EG 0.4
28-Sep-20 8:50 DW FA02533 EG 0.2
28-Sep-20 8:55 HSA5 FA02533 EG 0.3
28-Sep-20 9:05 DW FA02533 EG 0.2
28-Sep-20 9:15 HSA5 FA02533 EG 0.3
28-Sep-20 9:20 DW FA02533 EG 0.1 Stop boring HSA5
28-Sep-20 9:30 HSA5 FA02533 EG 0.3 Start boring HSA4
28-Sep-20 9:35 DW FA02533 EG 0.1
28-Sep-20 10:55 HSA4 FA02533 EG 0.1
28-Sep-20 11:00 DW FA02533 EG 0.2
28-Sep-20 11:10 HSA4 FA02533 EG 0.2
28-Sep-20 11:15 DW FA02533 EG 0.2
28-Sep-20 11:20 HSA4 FA02533 EG 0.3
28-Sep-20 11:35 DW FA02533 EG 0.2
28-Sep-20 11:45 HSA4 FA02533 EG 0.3
3 of 4
Date Time1 Location2 Equipment
ID3
Equipment
Operator
Reading
(ppm)4 Comments
Edison Park Waste Delineation Project
Edison Park
21379 Magnolia Street, Huntington Beach, CA 92647
Daily Total Organic Compounds (TOC) Monitoring Log
28-Sep-20 11:50 DW FA02533 EG 0.5
28-Sep-20 12:00 HSA4 FA02533 EG 0.3
28-Sep-20 12:05 DW FA02533 EG 0.2
28-Sep-20 12:15 HSA4 FA02533 EG 0.3
28-Sep-20 12:20 DW FA02533 EG 0.2
28-Sep-20 12:30 HSA4 FA02533 EG 0.3
28-Sep-20 12:35 DW FA02533 EG 0.2
28-Sep-20 12:45 HSA4 FA02533 EG 0.3
28-Sep-20 12:50 DW FA02533 EG 0.2
28-Sep-20 13:00 HSA4 FA02533 EG 0.3
28-Sep-20 14:20 HSA3 FA02533 EG 0.1
28-Sep-20 14:25 DW FA02533 EG 0.1
28-Sep-20 14:35 HSA3 FA02533 EG 0.3
28-Sep-20 14:40 DW FA02533 EG 0.1
28-Sep-20 14:50 HSA3 FA02533 EG 0.3
28-Sep-20 14:55 DW FA02533 EG 0.1
28-Sep-20 14:58 Begin backfilling at HSA3
28-Sep-20 15:20 Begin boring at HSA2
28-Sep-20 15:25 HSA2 FA02533 EG 0.3
28-Sep-20 15:35 DW FA02533 EG 0.1
28-Sep-20 15:40 HSA2 FA02533 EG 0.3
28-Sep-20 15:45 Stop boring at HSA2 and backfill
28-Sep-20 16:30 Begin boring at HSA1
28-Sep-20 16:35 HSA1 FA02533 EG 0.4
28-Sep-20 16:45 DW FA02533 EG 0.1 Stop boring at HSA1
Notes:
1 - Pacific Daylight Time (PDT)
2 - Excavation Face or Perimeter (downwind)
3 - PID Monitor QRae III
4 - 15 seconds sustained readings, recorded every 15 minutes 4 of 4

APPENDIX B

LABORATORY ANALYTICAL TEST RESULTS

ANALYTICAL REPORT
Eurofins Calscience LLC
7440 Lincoln Way
Garden Grove, CA 92841
Tel:
(714)895-5494
Laboratory Job ID: 570-53807-1
Client Project/Site: Edison Park Waste Delineation / HL1685B For:

Geosyntec Consultants, Inc.
2100 Main Street
Suite 150
Huntington Beach, California 92648
Attn: Karthik Viswanathan
Authorized for release by:
3/19/2021 4:37:23 PM
Stephen Nowak, Project Manager I
(714)895-5494
[email protected]
The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page.

This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature.

Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2
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Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Laboratory Job ID: 570-53807-1

Eurofins Calscience LLC
3/19/2021
Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 1
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Definitions/Glossary
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Qualifiers

GC/MS VOA
Qualifier Description
F1 MS and/or MSD recovery exceeds control limits.

Qualifier
Metals
Qualifier Description
F1 MS and/or MSD recovery exceeds control limits.

Qualifier
Glossary
These commonly used abbreviations may or may not be present in this report. ¤ Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation
%R Percent Recovery
CFL Contains Free Liquid
CFU Colony Forming Unit
CNF Contains No Free Liquid
DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor
DL Detection Limit (DoD/DOE)
DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry)
EDL Estimated Detection Limit (Dioxin)
LOD Limit of Detection (DoD/DOE)
LOQ Limit of Quantitation (DoD/DOE)
MCL EPA recommended "Maximum Contaminant Level"
MDA Minimum Detectable Activity (Radiochemistry)
MDC Minimum Detectable Concentration (Radiochemistry)
MDL Method Detection Limit
ML Minimum Level (Dioxin)
MPN Most Probable Number
MQL Method Quantitation Limit
NC Not Calculated
ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent
POS Positive / Present
PQL Practical Quantitation Limit
PRES Presumptive
QC Quality Control
RER Relative Error Ratio (Radiochemistry)
RL Reporting Limit or Requested Limit (Radiochemistry)
RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin)
TEQ Toxicity Equivalent Quotient (Dioxin)
TNTC Too Numerous To Count
Eurofins Calscience LLC

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15 Case Narrative
Client: Geosyntec Consultants, Inc. Job ID: 570-53807-1 Project/Site: Edison Park Waste Delineation / HL1685B
Job ID: 570-53807-1
Laboratory: Eurofins Calscience LLC
Narrative
Job Narrative
570-53807-1
Comments
No additional comments.

Receipt
The sample was received on 3/15/2021 10:15 AM. Unless otherwise noted below, the sample arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 3.8º C.

GC/MS VOA
Method 8260B: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for preparation batch 570-136182 and analytical batch 570-136236 were outside control limits. Sample matrix interference is suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits.

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

GC Semi VOA
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.

Metals
Method 6010B: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for preparation batch 570-136938 and analytical batch 570-137251 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits.

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

Organic Prep
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.

VOA Prep
No analytical or quality issues were noted, other than those described in the Definitions/Glossary page.

Eurofins Calscience LLC

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15 Detection Summary
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Client Sample ID: EP-IDW-01 Lab Sample ID: 570-53807-1
Acetone
RL
20 ug/Kg
Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA127 8260B
C6-C44 5.0 mg/Kg Total/NA19.5 8015B
Arsenic 2.48 mg/Kg Total/NA16.38 6010B
Barium 0.495 mg/Kg Total/NA191.1 6010B
Beryllium 0.248 mg/Kg Total/NA11.06 6010B
Cadmium 0.495 mg/Kg Total/NA11.13 6010B
Chromium 0.990 mg/Kg Total/NA121.3 6010B
Cobalt 0.990 mg/Kg Total/NA110.2 6010B
Copper 0.990 mg/Kg Total/NA120.3 6010B
Nickel 0.495 mg/Kg Total/NA115.5 6010B
Vanadium 0.990 mg/Kg Total/NA142.1 6010B
Zinc 9.90 mg/Kg Total/NA157.6 6010B
Eurofins Calscience LLC
This Detection Summary does not include radiochemical test results.

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15 Client Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS)
Lab Sample ID: 570-53807-1Client Sample ID: EP-IDW-01
Matrix: SolidDate Collected: 03/12/21 18:20
Date Received: 03/15/21 10:15
RL
1,1,1,2-Tetrachloroethane ND 0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,1,1-Trichloroethane ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,1,2,2-Tetrachloroethane ND

9.9 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,1,2-Trichloro-1,2,2-trifluoroethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,1,2-Trichloroethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,1-Dichloroethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,1-Dichloroethene ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,1-Dichloropropene ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2,3-Trichlorobenzene ND F1

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2,3-Trichloropropane ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2,4-Trichlorobenzene ND F1

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2,4-Trimethylbenzene ND

9.9 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2-Dibromo-3-Chloropropane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2-Dibromoethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2-Dichlorobenzene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2-Dichloroethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,2-Dichloropropane ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,3,5-Trimethylbenzene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,3-Dichlorobenzene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,3-Dichloropropane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 11,4-Dichlorobenzene ND

5.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 12,2-Dichloropropane ND 20 ug/Kg 03/16/21 11:27 03/16/21 11:57 12-Butanone ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 12-Chlorotoluene ND 20 ug/Kg 03/16/21 11:27 03/16/21 11:57 12-Hexanone ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 14-Chlorotoluene ND 20 ug/Kg 03/16/21 11:27 03/16/21 11:57 14-Methyl-2-pentanone ND 20 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Acetone 27

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Benzene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Bromobenzene ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Bromochloromethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Bromodichloromethane ND

5.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Bromoform ND
20 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Bromomethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1cis-1,2-Dichloroethene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1cis-1,3-Dichloropropene ND

9.9 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Carbon disulfide ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Carbon tetrachloride ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Chlorobenzene ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Chloroethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Chloroform ND 20 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Chloromethane ND F1

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Dibromochloromethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Dibromomethane ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Dichlorodifluoromethane ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Ethylbenzene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Isopropylbenzene ND

9.9 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Methylene Chloride ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Methyl-t-Butyl Ether (MTBE) ND Eurofins Calscience LLC

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Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 570-53807-1Client Sample ID: EP-IDW-01
Matrix: SolidDate Collected: 03/12/21 18:20
Date Received: 03/15/21 10:15
RL
Naphthalene ND F1 9.9 ug/Kg 03/16/21 11:27 03/16/21 11:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1n-Butylbenzene ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1N-Propylbenzene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1o-Xylene ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1m,p-Xylene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1p-Isopropyltoluene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1sec-Butylbenzene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Styrene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1trans-1,2-Dichloroethene ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1trans-1,3-Dichloropropene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1tert-Butylbenzene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Tetrachloroethene ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Toluene ND

2.0 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Trichloroethene ND

9.9 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Trichlorofluoromethane ND

9.9 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Vinyl acetate ND

0.99 ug/Kg 03/16/21 11:27 03/16/21 11:57 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr) 106 71 - 155 03/16/21 11:27 03/16/21 11:57 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene (Surr) 95 03/16/21 11:27 03/16/21 11:57 180 - 120 Dibromofluoromethane (Surr) 96 03/16/21 11:27 03/16/21 11:57 179 - 133 Toluene-d8 (Surr) 96 03/16/21 11:27 03/16/21 11:57 180 - 120 Eurofins Calscience LLC

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Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8015B - Diesel Range Organics (DRO) (GC)
Lab Sample ID: 570-53807-1Client Sample ID: EP-IDW-01
Matrix: SolidDate Collected: 03/12/21 18:20
Date Received: 03/15/21 10:15
RL
C6 as C6 ND 5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C7 as C7 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C8 as C8 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C9-C10 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C11-C12 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C13-C14 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C15-C16 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C17-C18 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C19-C20 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C21-C22 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C23-C24 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C25-C28 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C29-C32 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C33-C36 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C37-C40 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C41-C44 ND

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1C6-C44 9.5

5.0 mg/Kg 03/16/21 14:07 03/17/21 03:11 1Diesel Range Organics [C10-C28] ND n-Octacosane (Surr) 95 60 - 138 03/16/21 14:07 03/17/21 03:11 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Calscience LLC

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15 Client Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 6010B - Metals (ICP)
Lab Sample ID: 570-53807-1Client Sample ID: EP-IDW-01
Matrix: SolidDate Collected: 03/12/21 18:20
Date Received: 03/15/21 10:15
RL
Antimony ND 2.97 mg/Kg 03/18/21 15:00 03/19/21 11:01 1
Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier

2.48 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Arsenic 6.38

0.495 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Barium 91.1

0.248 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Beryllium 1.06

0.495 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Cadmium 1.13

0.990 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Chromium 21.3

0.990 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Cobalt 10.2

0.990 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Copper 20.3

4.95 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Lead ND

0.495 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Molybdenum ND

0.495 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Nickel 15.5

4.95 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Selenium ND

0.990 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Silver ND

4.95 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Thallium ND

0.990 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Vanadium 42.1

9.90 mg/Kg 03/18/21 15:00 03/19/21 11:01 1Zinc 57.6
Eurofins Calscience LLC

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15 Client Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 7471A - Mercury (CVAA)
Lab Sample ID: 570-53807-1Client Sample ID: EP-IDW-01
Matrix: SolidDate Collected: 03/12/21 18:20
Date Received: 03/15/21 10:15
RL
Mercury ND 0.0847 mg/Kg 03/18/21 15:00 03/19/21 12:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier
Eurofins Calscience LLC

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15 Surrogate Summary
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS)
Prep Type: Total/NAMatrix: Solid
Lab Sample ID Client Sample ID (71-155) (80-120) (79-133) (80-120)

DCA BFB DBFM TOL
106 95 96 96570-53807-1
Percent Surrogate Recovery (Acceptance Limits)
EP-IDW-01
107 101 103 102570-53807-1 MS EP-IDW-01
105 101 103 103570-53807-1 MSD EP-IDW-01
100 99 102 102LCS 570-136182/1-A Lab Control Sample
100 102 102 102LCSD 570-136182/2-A Lab Control Sample Dup 108 98 98 97MB 570-136182/3-A Method Blank
Surrogate Legend
DCA = 1,2-Dichloroethane-d4 (Surr)
BFB = 4-Bromofluorobenzene (Surr)
DBFM = Dibromofluoromethane (Surr)
TOL = Toluene-d8 (Surr)
Method: 8015B - Diesel Range Organics (DRO) (GC)
Prep Type: Total/NAMatrix: Solid
Lab Sample ID Client Sample ID (60-138)
OTCSN1
86570-53646-A-4-A MS
Percent Surrogate Recovery (Acceptance Limits)
Matrix Spike
94570-53646-A-4-B MSD Matrix Spike Duplicate
95570-53807-1 EP-IDW-01
85LCS 570-136343/2-A Lab Control Sample
87LCSD 570-136343/3-A Lab Control Sample Dup
86MB 570-136343/1-A Method Blank
Surrogate Legend
OTCSN = n-Octacosane (Surr)
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS)
Client Sample ID: Method BlankLab Sample ID: MB 570-136182/3-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
RL
1,1,1,2-Tetrachloroethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1 MB MB
Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier
ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,1,1-Trichloroethane ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,1,2,2-Tetrachloroethane ND 10 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,1,2-Trichloro-1,2,2-trifluoroethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,1,2-Trichloroethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,1-Dichloroethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,1-Dichloroethene ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,1-Dichloropropene ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2,3-Trichlorobenzene ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2,3-Trichloropropane ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2,4-Trichlorobenzene ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2,4-Trimethylbenzene ND 10 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2-Dibromo-3-Chloropropane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2-Dibromoethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2-Dichlorobenzene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2-Dichloroethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,2-Dichloropropane ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,3,5-Trimethylbenzene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,3-Dichlorobenzene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,3-Dichloropropane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 11,4-Dichlorobenzene ND 5.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 12,2-Dichloropropane ND 20 ug/Kg 03/16/21 07:28 03/16/21 10:36 12-Butanone
ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 12-Chlorotoluene ND 20 ug/Kg 03/16/21 07:28 03/16/21 10:36 12-Hexanone
ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 14-Chlorotoluene ND 20 ug/Kg 03/16/21 07:28 03/16/21 10:36 14-Methyl-2-pentanone ND 20 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Acetone
ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Benzene
ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Bromobenzene ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Bromochloromethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Bromodichloromethane ND 5.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Bromoform
ND 20 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Bromomethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1cis-1,2-Dichloroethene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1cis-1,3-Dichloropropene ND 10 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Carbon disulfide ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Carbon tetrachloride ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Chlorobenzene ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Chloroethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Chloroform
ND 20 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Chloromethane ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Dibromochloromethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Dibromomethane ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Dichlorodifluoromethane ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Ethylbenzene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Isopropylbenzene ND 10 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Methylene Chloride Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 570-136182/3-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
RL
Methyl-t-Butyl Ether (MTBE) ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1 MB MB
Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier
ND 10 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Naphthalene
ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1n-Butylbenzene ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1N-Propylbenzene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1o-Xylene
ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1m,p-Xylene
ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1p-Isopropyltoluene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1sec-Butylbenzene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Styrene
ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1trans-1,2-Dichloroethene ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1trans-1,3-Dichloropropene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1tert-Butylbenzene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Tetrachloroethene ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Toluene
ND 2.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Trichloroethene ND 10 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Trichlorofluoromethane ND 10 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Vinyl acetate ND 1.0 ug/Kg 03/16/21 07:28 03/16/21 10:36 1Vinyl chloride 1,2-Dichloroethane-d4 (Surr) 108 71 - 155 03/16/21 10:36 1 MB MB
Surrogate
03/16/21 07:28
Dil FacPrepared AnalyzedQualifier Limits%Recovery
98 03/16/21 07:28 03/16/21 10:36 14-Bromofluorobenzene (Surr) 80 - 120 98 03/16/21 07:28 03/16/21 10:36 1Dibromofluoromethane (Surr) 79 - 133 97 03/16/21 07:28 03/16/21 10:36 1Toluene-d8 (Surr) 80 - 120 Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-136182/1-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
1,1,1,2-Tetrachloroethane 50.0 48.43 ug/Kg 97 70 - 130
Analyte

LCS LCS
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits
1,1,1-Trichloroethane 50.0 46.20 ug/Kg 92 70 - 130
1,1,2,2-Tetrachloroethane 50.0 51.17 ug/Kg 102 70 - 130 1,1,2-Trichloro-1,2,2-trifluoroetha
ne

50.0 41.44 ug/Kg 83 70 - 130
1,1,2-Trichloroethane 50.0 50.28 ug/Kg 101 70 - 130
1,1-Dichloroethane 50.0 46.72 ug/Kg 93 70 - 130
1,1-Dichloroethene 50.0 47.49 ug/Kg 95 74 - 122
1,1-Dichloropropene 50.0 46.75 ug/Kg 94 70 - 130
1,2,3-Trichlorobenzene 50.0 51.14 ug/Kg 102 70 - 130
1,2,3-Trichloropropane 50.0 50.79 ug/Kg 102 70 - 130
1,2,4-Trichlorobenzene 50.0 50.36 ug/Kg 101 70 - 130
1,2,4-Trimethylbenzene 50.0 49.41 ug/Kg 99 70 - 130
1,2-Dibromo-3-Chloropropane 50.0 50.89 ug/Kg 102 70 - 130 1,2-Dibromoethane 50.0 50.47 ug/Kg 101 70 - 130
1,2-Dichlorobenzene 50.0 48.68 ug/Kg 97 75 - 120
1,2-Dichloroethane 50.0 48.29 ug/Kg 97 70 - 130
1,2-Dichloropropane 50.0 49.28 ug/Kg 99 79 - 115
1,3,5-Trimethylbenzene 50.0 48.61 ug/Kg 97 70 - 130
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-136182/1-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
1,3-Dichlorobenzene 50.0 48.72 ug/Kg 97 70 - 130
Analyte

LCS LCS
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits
1,3-Dichloropropane 50.0 49.24 ug/Kg 98 70 - 130
1,4-Dichlorobenzene 50.0 46.79 ug/Kg 94 70 - 130
2,2-Dichloropropane 50.0 49.93 ug/Kg 100 70 - 130
2-Butanone 50.0 55.45 ug/Kg 111 70 - 130
2-Chlorotoluene 50.0 47.35 ug/Kg 95 70 - 130
2-Hexanone 50.0 54.55 ug/Kg 109 70 - 130
4-Chlorotoluene 50.0 48.07 ug/Kg 96 70 - 130
4-Methyl-2-pentanone 50.0 51.75 ug/Kg 104 70 - 130
Acetone 50.0 54.17 ug/Kg 108 70 - 130
Benzene 50.0 45.01 ug/Kg 90 78 - 120
Bromobenzene 50.0 47.72 ug/Kg 95 70 - 130
Bromochloromethane 50.0 48.38 ug/Kg 97 70 - 130
Bromodichloromethane 50.0 51.51 ug/Kg 103 70 - 130
Bromoform 50.0 52.81 ug/Kg 106 70 - 130
Bromomethane 50.0 53.26 ug/Kg 107 70 - 130
cis-1,2-Dichloroethene 50.0 49.54 ug/Kg 99 70 - 130
cis-1,3-Dichloropropene 50.0 51.19 ug/Kg 102 70 - 130
Carbon disulfide 50.0 48.28 ug/Kg 97 70 - 130
Carbon tetrachloride 50.0 47.14 ug/Kg 94 49 - 139
Chlorobenzene 50.0 46.39 ug/Kg 93 79 - 120
Chloroethane 50.0 47.14 ug/Kg 94 70 - 130
Chloroform 50.0 49.29 ug/Kg 99 70 - 130
Chloromethane 50.0 39.53 ug/Kg 79 70 - 130
Dibromochloromethane 50.0 53.56 ug/Kg 107 70 - 130
Dibromomethane 50.0 50.64 ug/Kg 101 70 - 130
Dichlorodifluoromethane 50.0 41.86 ug/Kg 84 70 - 130
Ethylbenzene 50.0 47.46 ug/Kg 95 76 - 120
Isopropylbenzene 50.0 48.63 ug/Kg 97 70 - 130
Methylene Chloride 50.0 47.58 ug/Kg 95 70 - 130
Methyl-t-Butyl Ether (MTBE) 50.0 47.76 ug/Kg 96 70 - 124 Naphthalene 50.0 47.38 ug/Kg 95 70 - 130
n-Butylbenzene 50.0 48.67 ug/Kg 97 77 - 123
N-Propylbenzene 50.0 47.56 ug/Kg 95 70 - 130
o-Xylene 50.0 50.38 ug/Kg 101 70 - 130
m,p-Xylene 100 96.11 ug/Kg 96 70 - 130
p-Isopropyltoluene 50.0 48.94 ug/Kg 98 70 - 130
sec-Butylbenzene 50.0 48.44 ug/Kg 97 70 - 130
Styrene 50.0 50.33 ug/Kg 101 70 - 130
trans-1,2-Dichloroethene 50.0 46.24 ug/Kg 92 70 - 130
trans-1,3-Dichloropropene 50.0 50.71 ug/Kg 101 70 - 130 tert-Butylbenzene 50.0 48.09 ug/Kg 96 70 - 130
Tetrachloroethene 50.0 45.69 ug/Kg 91 70 - 130
Toluene 50.0 47.19 ug/Kg 94 77 - 120
Trichloroethene 50.0 46.52 ug/Kg 93 70 - 130
Trichlorofluoromethane 50.0 44.58 ug/Kg 89 70 - 130
Vinyl acetate 50.0 55.69 ug/Kg 111 70 - 130
Vinyl chloride 50.0 42.41 ug/Kg 85 68 - 122
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-136182/1-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
1,2-Dichloroethane-d4 (Surr) 71 - 155
Surrogate
100

LCS LCS
Qualifier Limits%Recovery
994-Bromofluorobenzene (Surr) 80 - 120
102Dibromofluoromethane (Surr) 79 - 133
102Toluene-d8 (Surr) 80 - 120
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-136182/2-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
1,1,1,2-Tetrachloroethane 50.0 47.55 ug/Kg 95 70 - 130 2 20 Analyte

LCSD LCSD
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits LimitRPD
RPD
1,1,1-Trichloroethane 50.0 44.51 ug/Kg 89 70 - 130 4 20 1,1,2,2-Tetrachloroethane 50.0 52.39 ug/Kg 105 70 - 130 2 20 1,1,2-Trichloro-1,2,2-trifluoroetha
ne

50.0 40.04 ug/Kg 80 70 - 130 3 20
1,1,2-Trichloroethane 50.0 48.47 ug/Kg 97 70 - 130 4 20 1,1-Dichloroethane 50.0 45.06 ug/Kg 90 70 - 130 4 20
1,1-Dichloroethene 50.0 45.46 ug/Kg 91 74 - 122 4 20
1,1-Dichloropropene 50.0 44.77 ug/Kg 90 70 - 130 4 20
1,2,3-Trichlorobenzene 50.0 48.77 ug/Kg 98 70 - 130 5 20 1,2,3-Trichloropropane 50.0 49.29 ug/Kg 99 70 - 130 3 20 1,2,4-Trichlorobenzene 50.0 49.35 ug/Kg 99 70 - 130 2 20 1,2,4-Trimethylbenzene 50.0 47.41 ug/Kg 95 70 - 130 4 20 1,2-Dibromo-3-Chloropropane 50.0 49.22 ug/Kg 98 70 - 130 3 20 1,2-Dibromoethane 50.0 49.91 ug/Kg 100 70 - 130 1 20
1,2-Dichlorobenzene 50.0 47.84 ug/Kg 96 75 - 120 2 20
1,2-Dichloroethane 50.0 45.67 ug/Kg 91 70 - 130 6 20
1,2-Dichloropropane 50.0 47.19 ug/Kg 94 79 - 115 4 25
1,3,5-Trimethylbenzene 50.0 47.59 ug/Kg 95 70 - 130 2 20 1,3-Dichlorobenzene 50.0 46.65 ug/Kg 93 70 - 130 4 20
1,3-Dichloropropane 50.0 48.49 ug/Kg 97 70 - 130 2 20
1,4-Dichlorobenzene 50.0 45.61 ug/Kg 91 70 - 130 3 20
2,2-Dichloropropane 50.0 48.31 ug/Kg 97 70 - 130 3 20
2-Butanone 50.0 52.32 ug/Kg 105 70 - 130 6 20
2-Chlorotoluene 50.0 46.43 ug/Kg 93 70 - 130 2 20
2-Hexanone 50.0 51.94 ug/Kg 104 70 - 130 5 20
4-Chlorotoluene 50.0 48.57 ug/Kg 97 70 - 130 1 20
4-Methyl-2-pentanone 50.0 48.76 ug/Kg 98 70 - 130 6 20
Acetone 50.0 50.31 ug/Kg 101 70 - 130 7 20
Benzene 50.0 43.12 ug/Kg 86 78 - 120 4 20
Bromobenzene 50.0 46.97 ug/Kg 94 70 - 130 2 20
Bromochloromethane 50.0 47.46 ug/Kg 95 70 - 130 2 20
Bromodichloromethane 50.0 48.85 ug/Kg 98 70 - 130 5 20
Bromoform 50.0 53.33 ug/Kg 107 70 - 130 1 20
Bromomethane 50.0 50.93 ug/Kg 102 70 - 130 4 20
cis-1,2-Dichloroethene 50.0 48.17 ug/Kg 96 70 - 130 3 20 cis-1,3-Dichloropropene 50.0 49.14 ug/Kg 98 70 - 130 4 20 Carbon disulfide 50.0 46.48 ug/Kg 93 70 - 130 4 20
Carbon tetrachloride 50.0 45.38 ug/Kg 91 49 - 139 4 20
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-136182/2-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
Chlorobenzene 50.0 45.51 ug/Kg 91 79 - 120 2 20
Analyte

LCSD LCSD
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits LimitRPD
RPD
Chloroethane 50.0 46.80 ug/Kg 94 70 - 130 1 20
Chloroform 50.0 47.74 ug/Kg 95 70 - 130 3 20
Chloromethane 50.0 39.64 ug/Kg 79 70 - 130 0 20
Dibromochloromethane 50.0 52.57 ug/Kg 105 70 - 130 2 20 Dibromomethane 50.0 47.92 ug/Kg 96 70 - 130 6 20
Dichlorodifluoromethane 50.0 41.72 ug/Kg 83 70 - 130 0 20 Ethylbenzene 50.0 46.56 ug/Kg 93 76 - 120 2 20
Isopropylbenzene 50.0 47.64 ug/Kg 95 70 - 130 2 20
Methylene Chloride 50.0 46.24 ug/Kg 92 70 - 130 3 20
Methyl-t-Butyl Ether (MTBE) 50.0 46.09 ug/Kg 92 70 - 124 4 20 Naphthalene 50.0 46.78 ug/Kg 94 70 - 130 1 20
n-Butylbenzene 50.0 46.87 ug/Kg 94 77 - 123 4 25
N-Propylbenzene 50.0 46.40 ug/Kg 93 70 - 130 2 20
o-Xylene 50.0 49.43 ug/Kg 99 70 - 130 2 20
m,p-Xylene 100 93.58 ug/Kg 94 70 - 130 3 20
p-Isopropyltoluene 50.0 47.94 ug/Kg 96 70 - 130 2 20
sec-Butylbenzene 50.0 47.17 ug/Kg 94 70 - 130 3 20
Styrene 50.0 49.52 ug/Kg 99 70 - 130 2 20
trans-1,2-Dichloroethene 50.0 44.40 ug/Kg 89 70 - 130 4 20 trans-1,3-Dichloropropene 50.0 48.86 ug/Kg 98 70 - 130 4 20 tert-Butylbenzene 50.0 48.75 ug/Kg 98 70 - 130 1 20
Tetrachloroethene 50.0 44.88 ug/Kg 90 70 - 130 2 20
Toluene 50.0 45.11 ug/Kg 90 77 - 120 4 20
Trichloroethene 50.0 43.99 ug/Kg 88 70 - 130 6 20
Trichlorofluoromethane 50.0 46.56 ug/Kg 93 70 - 130 4 20 Vinyl acetate 50.0 53.52 ug/Kg 107 70 - 130 4 20
Vinyl chloride 50.0 43.04 ug/Kg 86 68 - 122 1 20
1,2-Dichloroethane-d4 (Surr) 71 - 155
Surrogate
100

LCSD LCSD
Qualifier Limits%Recovery
1024-Bromofluorobenzene (Surr) 80 - 120
102Dibromofluoromethane (Surr) 79 - 133
102Toluene-d8 (Surr) 80 - 120
Client Sample ID: EP-IDW-01Lab Sample ID: 570-53807-1 MS Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
1,1,1,2-Tetrachloroethane ND 51.8 44.14 ug/Kg 85 70 - 130 Analyte
MS MS
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits
1,1,1-Trichloroethane ND 51.8 47.35 ug/Kg 91 70 - 130
1,1,2,2-Tetrachloroethane ND 51.8 45.83 ug/Kg 89 70 - 130 1,1,2-Trichloro-1,2,2-trifluoroetha
ne
ND 51.8 41.81 ug/Kg 81 70 - 130
1,1,2-Trichloroethane ND 51.8 42.48 ug/Kg 82 70 - 130
1,1-Dichloroethane ND 51.8 44.86 ug/Kg 87 70 - 130
1,1-Dichloroethene ND 51.8 45.23 ug/Kg 87 47 - 143
1,1-Dichloropropene ND 51.8 47.83 ug/Kg 92 70 - 130
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: EP-IDW-01Lab Sample ID: 570-53807-1 MS Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
1,2,3-Trichlorobenzene ND F1 51.8 37.72 ug/Kg 73 70 - 130 Analyte
MS MS
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits
1,2,3-Trichloropropane ND 51.8 42.57 ug/Kg 82 70 - 130
1,2,4-Trichlorobenzene ND F1 51.8 38.06 ug/Kg 74 70 - 130 1,2,4-Trimethylbenzene ND 51.8 46.30 ug/Kg 89 70 - 130
1,2-Dibromo-3-Chloropropane ND 51.8 39.88 ug/Kg 77 70 - 130 1,2-Dibromoethane ND 51.8 40.08 ug/Kg 77 64 - 124
1,2-Dichlorobenzene ND 51.8 42.29 ug/Kg 82 35 - 131
1,2-Dichloroethane ND 51.8 39.96 ug/Kg 77 70 - 130
1,2-Dichloropropane ND 51.8 43.27 ug/Kg 84 79 - 115
1,3,5-Trimethylbenzene ND 51.8 46.68 ug/Kg 90 70 - 130
1,3-Dichlorobenzene ND 51.8 42.85 ug/Kg 83 70 - 130
1,3-Dichloropropane ND 51.8 40.83 ug/Kg 79 70 - 130
1,4-Dichlorobenzene ND 51.8 40.88 ug/Kg 79 70 - 130
2,2-Dichloropropane ND 51.8 50.35 ug/Kg 97 70 - 130
2-Butanone ND 51.8 49.88 ug/Kg 96 70 - 130
2-Chlorotoluene ND 51.8 44.85 ug/Kg 87 70 - 130
2-Hexanone ND 51.8 45.87 ug/Kg 89 70 - 130
4-Chlorotoluene ND 51.8 44.54 ug/Kg 86 70 - 130
4-Methyl-2-pentanone ND 51.8 42.25 ug/Kg 82 70 - 130
Acetone 27 51.8 71.05 ug/Kg 84 70 - 130
Benzene ND 51.8 42.26 ug/Kg 82 61 - 127
Bromobenzene ND 51.8 41.40 ug/Kg 80 70 - 130
Bromochloromethane ND 51.8 41.01 ug/Kg 79 70 - 130
Bromodichloromethane ND 51.8 43.78 ug/Kg 85 70 - 130
Bromoform ND 51.8 42.48 ug/Kg 82 70 - 130
Bromomethane ND 51.8 47.33 ug/Kg 91 70 - 130
cis-1,2-Dichloroethene ND 51.8 45.26 ug/Kg 87 70 - 130
cis-1,3-Dichloropropene ND 51.8 42.21 ug/Kg 82 70 - 130 Carbon disulfide ND 51.8 48.30 ug/Kg 92 70 - 130
Carbon tetrachloride ND 51.8 47.57 ug/Kg 92 51 - 135
Chlorobenzene ND 51.8 42.38 ug/Kg 82 57 - 123
Chloroethane ND 51.8 41.47 ug/Kg 80 70 - 130
Chloroform ND 51.8 46.22 ug/Kg 89 70 - 130
Chloromethane ND F1 51.8 34.00 F1 ug/Kg 66 70 - 130
Dibromochloromethane ND 51.8 43.66 ug/Kg 84 70 - 130
Dibromomethane ND 51.8 40.02 ug/Kg 77 70 - 130
Dichlorodifluoromethane ND 51.8 41.21 ug/Kg 80 70 - 130 Ethylbenzene ND 51.8 46.31 ug/Kg 89 57 - 129
Isopropylbenzene ND 51.8 48.27 ug/Kg 93 70 - 130
Methylene Chloride ND 51.8 41.82 ug/Kg 81 70 - 130
Methyl-t-Butyl Ether (MTBE) ND 51.8 38.27 ug/Kg 74 57 - 123 Naphthalene ND F1 51.8 33.61 F1 ug/Kg 65 70 - 130
n-Butylbenzene ND 51.8 46.77 ug/Kg 90 77 - 123
N-Propylbenzene ND 51.8 46.82 ug/Kg 90 70 - 130
o-Xylene ND 51.8 47.43 ug/Kg 92 70 - 130
m,p-Xylene ND 104 92.43 ug/Kg 89 70 - 130
p-Isopropyltoluene ND 51.8 47.74 ug/Kg 92 70 - 130
sec-Butylbenzene ND 51.8 47.69 ug/Kg 92 70 - 130
Styrene ND 51.8 44.60 ug/Kg 86 70 - 130
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: EP-IDW-01Lab Sample ID: 570-53807-1 MS Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
trans-1,2-Dichloroethene ND 51.8 45.14 ug/Kg 87 70 - 130 Analyte
MS MS
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits
trans-1,3-Dichloropropene ND 51.8 39.56 ug/Kg 76 70 - 130 tert-Butylbenzene ND 51.8 47.89 ug/Kg 93 70 - 130
Tetrachloroethene ND 51.8 45.57 ug/Kg 88 70 - 130
Toluene ND 51.8 44.42 ug/Kg 86 63 - 123
Trichloroethene ND 51.8 44.43 ug/Kg 86 44 - 158
Trichlorofluoromethane ND 51.8 44.07 ug/Kg 85 70 - 130
Vinyl acetate ND 51.8 41.32 ug/Kg 80 70 - 130
Vinyl chloride ND 51.8 38.17 ug/Kg 74 49 - 139
1,2-Dichloroethane-d4 (Surr) 71 - 155
Surrogate
107
MS MS
Qualifier Limits%Recovery
1014-Bromofluorobenzene (Surr) 80 - 120
103Dibromofluoromethane (Surr) 79 - 133
102Toluene-d8 (Surr) 80 - 120
Client Sample ID: EP-IDW-01Lab Sample ID: 570-53807-1 MSD Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
1,1,1,2-Tetrachloroethane ND 50.5 44.60 ug/Kg 88 70 - 130 1 20 Analyte

MSD MSD
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits LimitRPD
RPD
1,1,1-Trichloroethane ND 50.5 49.24 ug/Kg 97 70 - 130 4 20 1,1,2,2-Tetrachloroethane ND 50.5 42.78 ug/Kg 85 70 - 130 7 20 1,1,2-Trichloro-1,2,2-trifluoroetha
ne
ND 50.5 41.15 ug/Kg 81 70 - 130 2 20
1,1,2-Trichloroethane ND 50.5 44.37 ug/Kg 88 70 - 130 4 20 1,1-Dichloroethane ND 50.5 47.83 ug/Kg 95 70 - 130 6 20 1,1-Dichloroethene ND 50.5 45.11 ug/Kg 89 47 - 143 0 25 1,1-Dichloropropene ND 50.5 50.26 ug/Kg 100 70 - 130 5 20 1,2,3-Trichlorobenzene ND F1 50.5 33.56 F1 ug/Kg 66 70 - 130 12 20 1,2,3-Trichloropropane ND 50.5 40.58 ug/Kg 80 70 - 130 5 20 1,2,4-Trichlorobenzene ND F1 50.5 34.65 F1 ug/Kg 69 70 - 130 9 20 1,2,4-Trimethylbenzene ND 50.5 46.70 ug/Kg 92 70 - 130 1 20 1,2-Dibromo-3-Chloropropane ND 50.5 37.66 ug/Kg 75 70 - 130 6 20 1,2-Dibromoethane ND 50.5 42.65 ug/Kg 84 64 - 124 6 20
1,2-Dichlorobenzene ND 50.5 39.41 ug/Kg 78 35 - 131 7 25 1,2-Dichloroethane ND 50.5 43.61 ug/Kg 86 70 - 130 9 20 1,2-Dichloropropane ND 50.5 46.74 ug/Kg 93 79 - 115 8 25 1,3,5-Trimethylbenzene ND 50.5 47.29 ug/Kg 94 70 - 130 1 20 1,3-Dichlorobenzene ND 50.5 41.05 ug/Kg 81 70 - 130 4 20 1,3-Dichloropropane ND 50.5 43.58 ug/Kg 86 70 - 130 7 20 1,4-Dichlorobenzene ND 50.5 38.95 ug/Kg 77 70 - 130 5 20 2,2-Dichloropropane ND 50.5 52.83 ug/Kg 105 70 - 130 5 20 2-Butanone ND 50.5 57.22 ug/Kg 113 70 - 130 14 20
2-Chlorotoluene ND 50.5 44.77 ug/Kg 89 70 - 130 0 20
2-Hexanone ND 50.5 46.36 ug/Kg 92 70 - 130 1 20
4-Chlorotoluene ND 50.5 44.11 ug/Kg 87 70 - 130 1 20
4-Methyl-2-pentanone ND 50.5 44.03 ug/Kg 87 70 - 130 4 20 Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: EP-IDW-01Lab Sample ID: 570-53807-1 MSD Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136236 Prep Batch: 136182
Acetone 27 50.5 82.53 ug/Kg 109 70 - 130 15 20
Analyte

MSD MSD
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits LimitRPD
RPD
Benzene ND 50.5 45.67 ug/Kg 90 61 - 127 8 20
Bromobenzene ND 50.5 41.39 ug/Kg 82 70 - 130 0 20
Bromochloromethane ND 50.5 43.86 ug/Kg 87 70 - 130 7 20 Bromodichloromethane ND 50.5 46.85 ug/Kg 93 70 - 130 7 20 Bromoform ND 50.5 40.70 ug/Kg 81 70 - 130 4 20
Bromomethane ND 50.5 49.70 ug/Kg 98 70 - 130 5 20
cis-1,2-Dichloroethene ND 50.5 48.38 ug/Kg 96 70 - 130 7 20 cis-1,3-Dichloropropene ND 50.5 45.23 ug/Kg 90 70 - 130 7 20 Carbon disulfide ND 50.5 45.92 ug/Kg 90 70 - 130 5 20
Carbon tetrachloride ND 50.5 49.41 ug/Kg 98 51 - 135 4 29 Chlorobenzene ND 50.5 43.65 ug/Kg 86 57 - 123 3 20
Chloroethane ND 50.5 41.14 ug/Kg 81 70 - 130 1 20
Chloroform ND 50.5 49.02 ug/Kg 97 70 - 130 6 20
Chloromethane ND F1 50.5 36.19 ug/Kg 72 70 - 130 6 20
Dibromochloromethane ND 50.5 45.05 ug/Kg 89 70 - 130 3 20 Dibromomethane ND 50.5 43.33 ug/Kg 86 70 - 130 8 20
Dichlorodifluoromethane ND 50.5 40.57 ug/Kg 80 70 - 130 2 20 Ethylbenzene ND 50.5 47.90 ug/Kg 95 57 - 129 3 22
Isopropylbenzene ND 50.5 47.85 ug/Kg 95 70 - 130 1 20
Methylene Chloride ND 50.5 45.35 ug/Kg 90 70 - 130 8 20 Methyl-t-Butyl Ether (MTBE) ND 50.5 43.29 ug/Kg 86 57 - 123 12 21 Naphthalene ND F1 50.5 30.72 F1 ug/Kg 61 70 - 130 9 20
n-Butylbenzene ND 50.5 46.95 ug/Kg 93 77 - 123 0 21
N-Propylbenzene ND 50.5 47.76 ug/Kg 95 70 - 130 2 20
o-Xylene ND 50.5 48.62 ug/Kg 96 70 - 130 2 20
m,p-Xylene ND 101 95.46 ug/Kg 95 70 - 130 3 20
p-Isopropyltoluene ND 50.5 47.86 ug/Kg 95 70 - 130 0 20 sec-Butylbenzene ND 50.5 48.47 ug/Kg 96 70 - 130 2 20
Styrene ND 50.5 44.81 ug/Kg 89 70 - 130 0 20
trans-1,2-Dichloroethene ND 50.5 47.17 ug/Kg 93 70 - 130 4 20 trans-1,3-Dichloropropene ND 50.5 41.20 ug/Kg 82 70 - 130 4 20 tert-Butylbenzene ND 50.5 48.62 ug/Kg 96 70 - 130 1 20
Tetrachloroethene ND 50.5 47.32 ug/Kg 94 70 - 130 4 20
Toluene ND 50.5 47.37 ug/Kg 94 63 - 123 6 20
Trichloroethene ND 50.5 47.01 ug/Kg 93 44 - 158 6 20
Trichlorofluoromethane ND 50.5 43.36 ug/Kg 86 70 - 130 2 20 Vinyl acetate ND 50.5 42.76 ug/Kg 85 70 - 130 3 20
Vinyl chloride ND 50.5 42.63 ug/Kg 84 49 - 139 11 47
1,2-Dichloroethane-d4 (Surr) 71 - 155
Surrogate
105

MSD MSD
Qualifier Limits%Recovery
1014-Bromofluorobenzene (Surr) 80 - 120
103Dibromofluoromethane (Surr) 79 - 133
103Toluene-d8 (Surr) 80 - 120
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8015B - Diesel Range Organics (DRO) (GC)
Client Sample ID: Method BlankLab Sample ID: MB 570-136343/1-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136311 Prep Batch: 136343
RL
C6 as C6 ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C7 as C7
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C8 as C8
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C9-C10
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C11-C12
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C13-C14
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C15-C16
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C17-C18
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C19-C20
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C21-C22
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C23-C24
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C25-C28
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C29-C32
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C33-C36
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C37-C40
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C41-C44
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1C6-C44
ND 5.0 mg/Kg 03/16/21 14:05 03/16/21 23:20 1Diesel Range Organics [C10-C28] n-Octacosane (Surr) 86 60 - 138 03/16/21 23:20 1
MB MB
Surrogate
03/16/21 14:05
Dil FacPrepared AnalyzedQualifier Limits%Recovery
Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-136343/2-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136311 Prep Batch: 136343
Diesel Range Organics
[C10-C28]
400 432.0 mg/Kg 108 80 - 130
Analyte

LCS LCS
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits
n-Octacosane (Surr) 60 - 138
Surrogate
85 LCS LCS
Qualifier Limits%Recovery
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-136343/3-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136311 Prep Batch: 136343
Diesel Range Organics
[C10-C28]
400 446.0 mg/Kg 112 80 - 130 3 20
Analyte

LCSD LCSD
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits LimitRPD
RPD
n-Octacosane (Surr) 60 - 138
Surrogate
87 LCSD LCSD
Qualifier Limits%Recovery
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 8015B - Diesel Range Organics (DRO) (GC) (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 570-53646-A-4-A MS Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136311 Prep Batch: 136343
Diesel Range Organics
[C10-C28]

6.2 402 438.9 mg/Kg 108 43 - 165
Analyte
MS MS
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits
n-Octacosane (Surr) 60 - 138
Surrogate
86 MS MS
Qualifier Limits%Recovery
Client Sample ID: Matrix Spike DuplicateLab Sample ID: 570-53646-A-4-B MSD Matrix: Solid Prep Type: Total/NA
Analysis Batch: 136311 Prep Batch: 136343
Diesel Range Organics
[C10-C28]

6.2 393 445.4 mg/Kg 112 43 - 165 1 35
Analyte

MSD MSD
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits LimitRPD
RPD
n-Octacosane (Surr) 60 - 138
Surrogate
94 MSD MSD
Qualifier Limits%Recovery
Method: 6010B - Metals (ICP)
Client Sample ID: Method BlankLab Sample ID: MB 570-136938/1-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137251 Prep Batch: 136938
RL
Antimony ND 2.96 mg/Kg 03/18/21 15:00 03/19/21 10:14 1
MB MB
Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier
ND 2.46 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Arsenic
ND 0.493 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Barium
ND 0.246 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Beryllium ND 0.493 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Cadmium
ND 0.985 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Chromium
ND 0.985 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Cobalt
ND 0.985 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Copper
ND 4.93 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Lead
ND 0.493 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Molybdenum ND 0.493 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Nickel
ND 4.93 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Selenium
ND 0.985 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Silver
ND 4.93 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Thallium
ND 0.985 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Vanadium
ND 9.85 mg/Kg 03/18/21 15:00 03/19/21 10:14 1Zinc
Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-136938/2-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137251 Prep Batch: 136938
Antimony 25.3 26.68 mg/Kg 106 80 - 120
Analyte

LCS LCS
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits
Arsenic 25.3 24.33 mg/Kg 96 80 - 120
Barium 25.3 26.89 mg/Kg 106 80 - 120
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 6010B - Metals (ICP) (Continued)
Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-136938/2-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137251 Prep Batch: 136938
Beryllium 25.3 25.01 mg/Kg 99 80 - 120
Analyte

LCS LCS
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits
Cadmium 25.3 24.99 mg/Kg 99 80 - 120
Chromium 25.3 25.27 mg/Kg 100 80 - 120
Cobalt 25.3 25.20 mg/Kg 100 80 - 120
Copper 25.3 25.76 mg/Kg 102 80 - 120
Lead 25.3 25.62 mg/Kg 101 80 - 120
Molybdenum 25.3 25.84 mg/Kg 102 80 - 120
Nickel 25.3 26.52 mg/Kg 105 80 - 120
Selenium 25.3 24.29 mg/Kg 96 80 - 120
Silver 12.6 12.62 mg/Kg 100 80 - 120
Thallium 25.3 26.68 mg/Kg 106 80 - 120
Vanadium 25.3 24.49 mg/Kg 97 80 - 120
Zinc 25.3 25.63 mg/Kg 101 80 - 120
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-136938/3-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137251 Prep Batch: 136938
Antimony 24.9 27.05 mg/Kg 109 80 - 120 1 20
Analyte

LCSD LCSD
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits LimitRPD
RPD
Arsenic 24.9 24.54 mg/Kg 99 80 - 120 1 20
Barium 24.9 26.43 mg/Kg 106 80 - 120 2 20
Beryllium 24.9 24.80 mg/Kg 100 80 - 120 1 20
Cadmium 24.9 24.73 mg/Kg 99 80 - 120 1 20
Chromium 24.9 24.93 mg/Kg 100 80 - 120 1 20
Cobalt 24.9 24.92 mg/Kg 100 80 - 120 1 20
Copper 24.9 25.49 mg/Kg 102 80 - 120 1 20
Lead 24.9 25.68 mg/Kg 103 80 - 120 0 20
Molybdenum 24.9 25.78 mg/Kg 104 80 - 120 0 20
Nickel 24.9 26.12 mg/Kg 105 80 - 120 2 20
Selenium 24.9 23.63 mg/Kg 95 80 - 120 3 20
Silver 12.4 12.41 mg/Kg 100 80 - 120 2 20
Thallium 24.9 25.24 mg/Kg 101 80 - 120 6 20
Vanadium 24.9 24.12 mg/Kg 97 80 - 120 2 20
Zinc 24.9 25.12 mg/Kg 101 80 - 120 2 20
Client Sample ID: Matrix SpikeLab Sample ID: 570-54150-A-5-B MS Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137251 Prep Batch: 136938
Antimony ND F1 26.0 11.68 F1 mg/Kg 45 50 - 115
Analyte
MS MS
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits
Arsenic 3.94 26.0 29.43 mg/Kg 98 75 - 125
Barium 34.4 F1 26.0 76.81 F1 mg/Kg 163 75 - 125
Beryllium 0.258 26.0 27.17 mg/Kg 103 75 - 125
Cadmium ND 26.0 25.59 mg/Kg 98 75 - 125
Chromium 2.51 26.0 28.80 mg/Kg 101 75 - 125
Cobalt 1.89 26.0 28.19 mg/Kg 101 75 - 125
Copper 3.41 26.0 30.07 mg/Kg 102 75 - 125
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 6010B - Metals (ICP) (Continued)
Client Sample ID: Matrix SpikeLab Sample ID: 570-54150-A-5-B MS Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137251 Prep Batch: 136938
Lead ND 26.0 30.34 mg/Kg 104 75 - 125
Analyte
MS MS
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits
Molybdenum ND 26.0 26.22 mg/Kg 101 75 - 125
Nickel 2.68 26.0 30.48 mg/Kg 107 75 - 125
Selenium ND 26.0 21.29 mg/Kg 82 75 - 125
Silver ND 13.0 13.16 mg/Kg 101 75 - 125
Thallium ND 26.0 24.83 mg/Kg 95 75 - 125
Vanadium 7.87 26.0 34.04 mg/Kg 100 75 - 125
Zinc ND 26.0 34.82 mg/Kg 99 75 - 125
Client Sample ID: Matrix Spike DuplicateLab Sample ID: 570-54150-A-5-C MSD Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137251 Prep Batch: 136938
Antimony ND F1 25.9 10.68 F1 mg/Kg 41 50 - 115 9 20
Analyte

MSD MSD
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits LimitRPD
RPD
Arsenic 3.94 25.9 30.54 mg/Kg 103 75 - 125 4 20
Barium 34.4 F1 25.9 87.53 F1 mg/Kg 205 75 - 125 13 20
Beryllium 0.258 25.9 27.00 mg/Kg 103 75 - 125 1 20
Cadmium ND 25.9 25.16 mg/Kg 97 75 - 125 2 20
Chromium 2.51 25.9 28.59 mg/Kg 101 75 - 125 1 20
Cobalt 1.89 25.9 26.79 mg/Kg 96 75 - 125 5 20
Copper 3.41 25.9 29.69 mg/Kg 101 75 - 125 1 20
Lead ND 25.9 29.24 mg/Kg 100 75 - 125 4 20
Molybdenum ND 25.9 25.35 mg/Kg 98 75 - 125 3 20
Nickel 2.68 25.9 29.00 mg/Kg 102 75 - 125 5 20
Selenium ND 25.9 21.94 mg/Kg 85 75 - 125 3 20
Silver ND 13.0 13.07 mg/Kg 101 75 - 125 1 20
Thallium ND 25.9 24.64 mg/Kg 95 75 - 125 1 20
Vanadium 7.87 25.9 33.55 mg/Kg 99 75 - 125 1 20
Zinc ND 25.9 35.43 mg/Kg 102 75 - 125 2 20
Method: 7471A - Mercury (CVAA)
Client Sample ID: Method BlankLab Sample ID: MB 570-136940/1-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137221 Prep Batch: 136940
RL
Mercury ND 0.0877 mg/Kg 03/18/21 15:00 03/19/21 11:30 1 MB MB
Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier
Client Sample ID: Lab Control SampleLab Sample ID: LCS 570-136940/2-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137221 Prep Batch: 136940
Mercury 0.820 0.8204 mg/Kg 100 85 - 121
Analyte

LCS LCS
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits
Eurofins Calscience LLC

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15 QC Sample Results
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method: 7471A - Mercury (CVAA) (Continued)
Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 570-136940/3-A Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137221 Prep Batch: 136940
Mercury 0.806 0.8081 mg/Kg 100 85 - 121 2 10
Analyte

LCSD LCSD
DUnitResult Qualifier %Rec
Spike
Added
%Rec.

Limits LimitRPD
RPD
Client Sample ID: Matrix SpikeLab Sample ID: 570-54150-A-5-E MS Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137221 Prep Batch: 136940
Mercury ND 0.806 0.7923 mg/Kg 98 71 - 137
Analyte
MS MS
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits
Client Sample ID: Matrix Spike DuplicateLab Sample ID: 570-54150-A-5-F MSD Matrix: Solid Prep Type: Total/NA
Analysis Batch: 137221 Prep Batch: 136940
Mercury ND 0.833 0.8099 mg/Kg 97 71 - 137 2 14
Analyte

MSD MSD
DUnitResult Qualifier %Rec
Spike
Added
Sample
Result
Sample
Qualifier
%Rec.

Limits LimitRPD
RPD
Eurofins Calscience LLC

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15 QC Association Summary
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B

GC/MS VOA
Prep Batch: 136182
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 5030C570-53807-1 EP-IDW-01 Total/NA
Solid 5030CMB 570-136182/3-A Method Blank Total/NA
Solid 5030CLCS 570-136182/1-A Lab Control Sample Total/NA Solid 5030CLCSD 570-136182/2-A Lab Control Sample Dup Total/NA Solid 5030C570-53807-1 MS EP-IDW-01 Total/NA
Solid 5030C570-53807-1 MSD EP-IDW-01 Total/NA
Analysis Batch: 136236
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 8260B 136182570-53807-1 EP-IDW-01 Total/NA
Solid 8260B 136182MB 570-136182/3-A Method Blank Total/NA Solid 8260B 136182LCS 570-136182/1-A Lab Control Sample Total/NA Solid 8260B 136182LCSD 570-136182/2-A Lab Control Sample Dup Total/NA Solid 8260B 136182570-53807-1 MS EP-IDW-01 Total/NA
Solid 8260B 136182570-53807-1 MSD EP-IDW-01 Total/NA
GC Semi VOA
Analysis Batch: 136311
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 8015B 136343570-53807-1 EP-IDW-01 Total/NA
Solid 8015B 136343MB 570-136343/1-A Method Blank Total/NA Solid 8015B 136343LCS 570-136343/2-A Lab Control Sample Total/NA Solid 8015B 136343LCSD 570-136343/3-A Lab Control Sample Dup Total/NA Solid 8015B 136343570-53646-A-4-A MS Matrix Spike Total/NA Solid 8015B 136343570-53646-A-4-B MSD Matrix Spike Duplicate Total/NA Prep Batch: 136343
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 3550C570-53807-1 EP-IDW-01 Total/NA
Solid 3550CMB 570-136343/1-A Method Blank Total/NA
Solid 3550CLCS 570-136343/2-A Lab Control Sample Total/NA Solid 3550CLCSD 570-136343/3-A Lab Control Sample Dup Total/NA Solid 3550C570-53646-A-4-A MS Matrix Spike Total/NA
Solid 3550C570-53646-A-4-B MSD Matrix Spike Duplicate Total/NA Metals
Prep Batch: 136938
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 3050B570-53807-1 EP-IDW-01 Total/NA
Solid 3050BMB 570-136938/1-A Method Blank Total/NA
Solid 3050BLCS 570-136938/2-A Lab Control Sample Total/NA Solid 3050BLCSD 570-136938/3-A Lab Control Sample Dup Total/NA Solid 3050B570-54150-A-5-B MS Matrix Spike Total/NA
Solid 3050B570-54150-A-5-C MSD Matrix Spike Duplicate Total/NA Prep Batch: 136940
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 7471A570-53807-1 EP-IDW-01 Total/NA
Solid 7471AMB 570-136940/1-A Method Blank Total/NA
Solid 7471ALCS 570-136940/2-A Lab Control Sample Total/NA Eurofins Calscience LLC

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15 QC Association Summary
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Metals (Continued)
Prep Batch: 136940 (Continued)
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 7471ALCSD 570-136940/3-A Lab Control Sample Dup Total/NA Solid 7471A570-54150-A-5-E MS Matrix Spike Total/NA
Solid 7471A570-54150-A-5-F MSD Matrix Spike Duplicate Total/NA Analysis Batch: 137221
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 7471A 136940570-53807-1 EP-IDW-01 Total/NA
Solid 7471A 136940MB 570-136940/1-A Method Blank Total/NA Solid 7471A 136940LCS 570-136940/2-A Lab Control Sample Total/NA Solid 7471A 136940LCSD 570-136940/3-A Lab Control Sample Dup Total/NA Solid 7471A 136940570-54150-A-5-E MS Matrix Spike Total/NA Solid 7471A 136940570-54150-A-5-F MSD Matrix Spike Duplicate Total/NA Analysis Batch: 137251
Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Solid 6010B 136938570-53807-1 EP-IDW-01 Total/NA
Solid 6010B 136938MB 570-136938/1-A Method Blank Total/NA Solid 6010B 136938LCS 570-136938/2-A Lab Control Sample Total/NA Solid 6010B 136938LCSD 570-136938/3-A Lab Control Sample Dup Total/NA Solid 6010B 136938570-54150-A-5-B MS Matrix Spike Total/NA Solid 6010B 136938570-54150-A-5-C MSD Matrix Spike Duplicate Total/NA Eurofins Calscience LLC

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15 Lab Chronicle
Client: Geosyntec Consultants, Inc. Job ID: 570-53807-1 Project/Site: Edison Park Waste Delineation / HL1685B
Client Sample ID: EP-IDW-01 Lab Sample ID: 570-53807-1
Matrix: SolidDate Collected: 03/12/21 18:20
Date Received: 03/15/21 10:15
Prep 5030C BE5H03/16/21 11:27 ECL 2136182
Type
Batch
Method
Batch
Prep Type LabAnalystRun
Prepared
or Analyzed
Initial
Amount Amount
Final Batch
NumberFactor
Dil
Total/NA 5.05 g 5 mL
Analysis 8260B 1 136236 03/16/21 11:57 BE5H ECL 2Total/NA 5 mL 5 mL GCMSGGGInstrument ID:

Prep 3550C 136343 03/16/21 14:07 EM5C ECL 1Total/NA 9.97 g 10 mL Analysis 8015B 1 136311 03/17/21 03:11 N1A ECL 1Total/NA GC48Instrument ID:

Prep 3050B 136938 03/18/21 15:00 SP7J ECL 1Total/NA 2.02 g 100 mL Analysis 6010B 1 137251 03/19/21 11:01 ULPF ECL 1Total/NA ICP8Instrument ID:

Prep 7471A 136940 03/18/21 15:00 SP7J ECL 1Total/NA 0.59 g 100 mL Analysis 7471A 1 137221 03/19/21 12:06 VYQ5 ECL 1Total/NA HG7Instrument ID:

Laboratory References:

ECL 1 = Eurofins Calscience LLC Lincoln, 7440 Lincoln Way, Garden Grove, CA 92841, TEL (714)895-5494 ECL 2 = Eurofins Calscience LLC Lampson, 7445 Lampson Ave, Garden Grove, CA 92841, TEL (714)895-5494 Eurofins Calscience LLC

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15 Accreditation/Certification Summary
Client: Geosyntec Consultants, Inc. Job ID: 570-53807-1 Project/Site: Edison Park Waste Delineation / HL1685B
Laboratory: Eurofins Calscience LLC
All accreditations/certifications held by this laboratory are listed. Not all accreditations/certifications are applicable to this report.

Authority Program Identification Number Expiration Date California 10109Los Angeles County Sanitation
Districts
09-30-21
California SCAQMD LAP 17LA0919 11-30-21
California State 2944 09-30-21
Guam State 20-003R 10-31-20 *
Nevada State CA00111 07-31-21
Oregon NELAP CA300001 01-30-22
USDA US Federal Programs P330-20-00034 02-10-23
Washington State C916-18 10-11-21
Eurofins Calscience LLC
* Accreditation/Certification renewal pending - accreditation/certification considered valid.

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15 Method Summary
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Method Method Description LaboratoryProtocol
SW8468260B Volatile Organic Compounds (GC/MS) ECL 2
SW8468015B Diesel Range Organics (DRO) (GC) ECL 1
SW8466010B Metals (ICP) ECL 1
SW8467471A Mercury (CVAA) ECL 1
SW8463050B Preparation, Metals ECL 1
SW8463550C Ultrasonic Extraction ECL 1
SW8465030C Purge and Trap ECL 2
SW8467471A Preparation, Mercury ECL 1
Protocol References:

SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates.

Laboratory References:

ECL 1 = Eurofins Calscience LLC Lincoln, 7440 Lincoln Way, Garden Grove, CA 92841, TEL (714)895-5494 ECL 2 = Eurofins Calscience LLC Lampson, 7445 Lampson Ave, Garden Grove, CA 92841, TEL (714)895-5494 Eurofins Calscience LLC

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15 Sample Summary
Job ID: 570-53807-1Client: Geosyntec Consultants, Inc.

Project/Site: Edison Park Waste Delineation / HL1685B
Lab Sample ID Client Sample ID ReceivedCollectedMatrix Asset ID 570-53807-1 EP-IDW-01 Solid 03/12/21 18:20 03/15/21 10:15 Eurofins Calscience LLC

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15

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15 Login Sample Receipt Checklist
Client: Geosyntec Consultants, Inc. Job Number: 570-53807-1 Login Number: 53807
Question Answer Comment
Creator: Soriano, Precy
List Source: Eurofins Calscience
List Number: 1
N/ARadioactivity wasn't checked or is </= background as measured by a survey meter.

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

TrueSample custody seals, if present, are intact.

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

TrueSamples were received on ice.

TrueCooler Temperature is acceptable.

TrueCooler Temperature is recorded.

TrueCOC is present.

TrueCOC is filled out in ink and legible.

TrueCOC is filled out with all pertinent information.

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

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

TrueContainers are not broken or leaking.

TrueSample collection date/times are provided.

TrueAppropriate sample containers are used.

TrueSample bottles are completely filled.

TrueSample Preservation Verified.

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

TrueMultiphasic samples are not present.

TrueSamples do not require splitting or compositing.

N/AResidual Chlorine Checked.

Eurofins Calscience

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15 ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
116760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] 10-08-2020
Mr. John Farmer
American Integrated Services
1502 E. Opp Street
Wilmington, CA 90744
Project: HB-40219
Project Site: 21377 Magnolia St., Huntington Beach, CA 92646 Sample Date: 10-02-2020
Lab Job No.: A010003
Dear Mr. Farmer:

Enclosed please find the analytical report for the sample(s) received by Alpha Scientific Corporation on 10-02-2020 and analyzed by the following EPA methods:

EPA 8015M (Total Petroleum Hydrocarbons)
EPA 8260B (VOCs & Oxygenates by GC/MS)
EPA 6010B/7471A for CAM Metals
All analyses have met the QA/QC criteria of this laboratory.

The sample(s) arrived in good conditions (i.e., chilled, intact) and with a chain of custody record attached.

Alpha Scientific Corporation is a CA ELAP certified laboratory (Certificate Number 3007). Thank you for giving us the opportunity to serve you. Please feel free to call me at (562) 809-8880 if our laboratory can be of further service to you.

Sincerely,
Roger Wang, Ph.D.

Laboratory Director
Enclosures
This cover letter is an integral part of this analytical report.

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
216760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] Client: American Integrated Services Lab Job No.: A010003 Project: HB-40219
Project Site: 21377 Magnolia St., Huntington Beach, CA 92646 Date Sampled: 10-02-2020 Matrix: Soil Date Received: 10-02-2020
Batch No. for TPH-g: AMJ02-GS1 Date Analyzed: 10-02-2020 Batch No. for TPH-d&o:BJ05-DS1 Date Analyzed: 10-05-2020 Date Reported: 10-08-2020
EPA 8015M (Total Petroleum Hydrocarbons)
Reporting Unit: mg/kg (ppm)
Sample ID Lab ID DF
for TPH-G
C4-C12
TPH-G*
Surrog
Rec.%
TPH-G
DF
for

TPH-D/O
C13-C23
TPH-D
C24-C40
TPH-O
Surrog
Rec.%

TPH-D/O
MDL 0.2 2 20
PQL 0.5 5 40
Method Blank 1 ND 91 1 ND ND 98
DRM-1,
DRM-2,
DRM-3
A010003-1,2,3
1 ND 93 1 11.5 67.5 100
* Gasoline Range TPH result is obtained from purge and trap analysis using LUFT-GC/MS method; MDL: Method Detection Limit;
PQL: Practical Quantitation Limit;
ND: Not Detected (below MDL);
J: Result is between MDL and PQL.;
Note: Surrogate recovery acceptance limits are 70-130%.

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
316760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] Client: American Integrated Services Lab Job No.: A010003 Date Reported: 10-08-2020 Project: HB-40219 Matrix: Soil Date Sampled: 10-02-2020

EPA 8260B (VOCs by GC/MS, Page 1 of 2)
Reporting Unit:
:g/kg(ppb)
DATE ANALYZED 10-02 10-02-20
DILUTION FACTOR 11
LAB SAMPLE I.D. MB A010003-1,2,3
CLIENT SAMPLE I.D.

DRM-1,
DRM-2,
DRM-3

COMPOUND MDL PQL
Dichlorodifluoromethane 2 5 ND ND
Chloromethane 2 5 ND ND
Vinyl Chloride 2 5 ND ND
Bromomethane 2 5 ND ND
Chloroethane 2 5 ND ND
Trichlorofluoromethane 2 5 ND ND
1,1-Dichloroethene 2 5 ND ND
Iodomethane 2 5 ND ND
Methylene Chloride 5 10 ND ND
trans-1,2-Dichloroethene 2 5 ND ND
1,1-Dichloroethane 2 5 ND ND
2,2-Dichloropropane 2 5 ND ND
cis-1,2-Dichloroethene 2 5 ND ND
Bromochloromethane 2 5 ND ND
Chloroform 2 5 ND ND
1,2-Dichloroethane (EDC) 2 5 ND ND
1,1,1-Trichloroethane 2 5 ND ND
Carbon tetrachloride 2 5 ND ND
1,1-Dichloropropene 2 5 ND ND
Benzene 1 2 ND ND
Trichloroethene 2 5 ND ND
1,2-Dichloropropane 2 5 ND ND
Bromodichloromethane 2 5 ND ND
Dibromomethane 2 5 ND ND
Trans-1,3-Dichloropropene 2 5 ND ND
cis-1,3-Dichloropropene 2 5 ND ND
1,1,2-Trichloroethane 2 5 ND ND
1,3-Dichloropropane 2 5 ND ND
Dibromochloromethane 2 5 ND ND
2-Chloroethylvinyl ether 2 10 ND ND
Bromoform 2 5 ND ND
Isopropylbenzene 2 5 ND ND
Bromobenzene 2 5 ND ND
Toluene 1 2 ND ND

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
416760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] Client: American Integrated Services La b Job No.: A010003 Da te Reported:10-08-2020 Project: HB-40219 Matrix: Soil Date Sampled: 10-02-2020 EPA 8260B (VOCs by GC/MS, Page 2 of 2) Reporting Unit: ppb

COMPOUND MDL PQL MB
DRM-1,
DRM-2,
DRM-3
Tetrachloroethene 2 5 ND ND
1,2-Dibromoethane(EDB) 2 5 ND ND
Chlorobenzene 2 5 ND ND
1,1,1,2-Tetrachloroethane 2 5 ND ND
Ethylbenzene 1 2 ND ND
Total Xylenes 2 4 ND ND
Styrene 2 5 ND ND
1,1,2,2-Tetrachloroethane 2 5 ND ND
1,2,3-Trichloropropane 2 5 ND ND
n-Propylbenzene 2 5 ND ND
2-Chlorotoluene 2 5 ND ND
4-Chlorotoluene 2 5 ND ND
1,3,5-Trimethylbenzene 2 5 ND ND
tert-Butylbenzene 2 5 ND ND
1,2,4-Trimethylbenzene 2 5 ND ND
Sec-Butylbenzene 2 5 ND ND
1,3-Dichlorobenzene 2 5 ND ND
p-Isopropyltoluene 2 5 ND ND
1,4-Dichlorobenzene 2 5 ND ND
1,2-Dichlorobenzene 2 5 ND ND
n-Butylbenzene 2 5 ND ND
1,2,4-Trichlorobenzene 2 5 ND ND
1,2-Dibromo-3-Chloropropane 2 5 ND ND
Hexachlorobutadiene 2 5 ND ND
Naphthalene 2 5 ND ND
1,2,3-Trichlorobenzene 2 5 ND ND
Acetone 75 100 ND ND
2-Butanone (MEK) 50 100 ND ND
Carbon Disulfide 25 50 ND ND
4-Methyl-2-pentanone 50 100 ND ND
2-Hexanone 50 100 ND ND
Vinyl Acetate 25 50 ND ND
Ethanol 500 1000 ND ND
MTBE 2 5 ND ND
ETBE 2 5 ND ND
DIPE 2 5 ND ND
TAME 2 5 ND ND
TBA 20 50 ND ND
SURROGATE Accept Limit% %RC %RC
Dibromofluoro-methane 79-126 98 98
Toluene-d8 79-121 95 96
Bromofluoro-benzene 71-131 94 96
MB=Method Blank; MDL=Method Detection Limit; PQL=Practical Quantitation Limit; ND=Not Detected (below DF × MDL); J=Result is between DF × MDL and DF × PQL. m=Matrix interference.

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
516760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] Client: American Integrated Services Lab Job No.: A010003 Project: HB-40219
Project Site: 21377 Magnolia St., Huntingt on Beach, CA 92646 Date Sampled: 10-02-2020 Matrix: Soil Date Received: 10-02-2020
Digestion Method: EPA 3050B Date Digested: 10-05-2020
Batch No.: 1005-MS1 Date Analyzed: 10-05-2020
Date Reported: 10-08-2020
EPA 6010B/7471A for CAM Metals (TTLC)
Reporting Units: mg/kg (ppm)
Element
EPA Method
Blank
A010003-1,2,3 MDL PQL
Method
DRM-1,
DRM-2,
DRM-3
Antimony (Sb) 6010B ND 2.0 1 2
Arsenic (As) 6010B ND 7.6 0.5 1
Barium (Ba) 6010B ND 120 1 2
Beryllium (Be) 6010B ND ND 1 2
Cadmium (Cd) 6010B ND ND 1 2
Chromium (Cr) 6010B ND 24.4 1 2
Cobalt (Co) 6010B ND 11.7 1 2
Copper (Cu) 6010B ND 37.2 1 2
Lead (Pb) 6010B ND 58.0 1 2
Molybdenum
(Mo) 6010B ND 1.7J 12
Nickel (Ni) 6010B ND ND 1 2
Selenium (Se) 6010B ND ND 0.5 1
Silver (Ag) 6010B ND ND 1 2
Thallium (Tl) 6010B ND ND 1 2
Vanadium (V) 6010B ND 100 1 2
Zinc (Zn) 6010B ND 125 1 2
Mercury (Hg) 7471A ND ND 0.1 0.2
MDL: Method Detection Limit;
PQL: Practical Quantitation Limit;
ND: Not Detected (less than MDL);
J: Result is between MDL and PQL.

1. ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
616760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] 10-08-2020
TPH-Gasoline
Batch QA/QC Report
Client: American Integrated Services Lab Job No: A010003 Project: HB-40219
Matrix: Soil Lab Sample I.D.: EA010004-1
Batch No: AMJ02-GS1 Date Analyzed: 10-02-2020
I. MS/MSD Report
Unit: ppb
Analyte Sample
Conc.

Spike
Conc.

MS MSD MS
%Rec.

MSD
%Rec.
% RPD %RPD
Accept.

Limit
%Rec
Accept.

Limit
TPH-g ND 1,000 843 871 84.3 87.1 3.3 30 70-130
II. LCS Result
Unit: ppb
Analyte LCS Value True Value Rec.% Accept. Limit
TPH-g 877 1,000 87.7 80-120
ND: Not Detected (at the specified limit).

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
716760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] 10-08-2020
EPA 8015M (TPH)
Batch QA/QC Report
Client: American Integrated Services Lab Job No: A010003 Project: HB-40219
Matrix: Soil Lab Sample I.D.: EA010005-1
Batch No: BJ05-DS1 Date Analyzed: 10-05-2020
I. MS/MSD Report
Unit: ppm
Analyte Sample
Conc.

Spike
Conc.

MS MSD MS
%Rec.

MSD
%Rec.
% RPD %RPD
Accept.

Limit
%Rec
Accept.

Limit
TPH-D ND 200 160 199 80.0 99.5 21.7 30 70-130
II. LCS Result
Unit: ppm
Analyte LCS Value True Value Rec.% Accept. Limit
TPH-D 191 200 95.5 80-120
ND: Not Detected (at the specified limit)

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
816760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] 10-08-2020
EPA 8260B
Batch QA/QC Report
Client: American Integrated Services Lab Job No: A010003 Project: HB-40219
Matrix: Soil Lab Sample I.D.: EA010004-2
Batch No: 1002-VOAS1 Date Analyzed: 10-03-2020
I. MS/MSD Report
Unit: ppb
Analyte Sample
Conc.

Spike
Conc.

MS MSD MS
%Rec.

MSD
%Rec.
% RPD %RPD
Accept.

Limit
%Rec
Accept.

Limit
1,1-
Dichloroethene
ND 20 18.1 16.8 90.5 84.0 7.4 30 70-130
Benzene ND 20 19.8 19.2 99.0 96.0 3.1 30 70-130
Trichloro-
ethene
ND 20 20.4 18.9 102.0 94.5 7.6 30 70-130
Toluene ND 20 19.4 18.5 97.0 92.5 4.7 30 70-130
Chlorobenzene ND 20 20.1 19.3 100.5 96.5 4.1 30 70-130
II. LCS Result
Unit: ppb
Analyte LCS Value True Value Rec.% Accept. Limit
1,1-Dichloroethene 16.5 20 82.5 80-120
Benzene 19.1 20 95.5 80-120
Trichloro-ethene 19.0 20 95.0 80-120
Toluene 19.4 20 97.0 80-120
Chlorobenzene 18.5 20 92.5 80-120
ND: Not Detected (at the specified limit).

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
916760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] 10-08-2020
EPA 6010B/7471A for CAM Metals (TTLC)
Batch QA/QC Report
Client: American Integrated Services Lab Job No: A010003 Project: HB-40219
Matrix: Soil Lab Sample I.D.: EA010004-1
Batch No.: 1005-MS1 Date Analyzed: 10-05-2020
I. MS/MSD Report
Unit: ppm
Analyte EPA Method Sample
Conc.

Spike
Conc.

MS
%Rec.

MSD
%Rec.
% RPD %RPD
Accept.

Limit
%Rec
Accept.

Limit
Antimony (Sb) 6010B 2.2 10 99.4 102.2 2.8 30 70-130
Arsenic (As) 6010B 1.5 10 93.6 96.9 3.5 30 70-130
Barium (Ba) 6010B 106 10 93.8 93.4 0.5 30 70-130
Beryllium (Be) 6010B ND 10 89.3 88.7 0.7 30 70-130
Cadmium (Cd) 6010B ND 10 98.8 99.3 0.4 30 70-130
Chromium (Cr) 6010B 18.1 10 94.0 92.6 1.4 30 70-130
Cobalt (Co) 6010B 9.2 10 100.8 96.0 4.9 30 70-130
Copper (Cu) 6010B 25.2 10 104.8 98.6 6.1 30 70-130
Lead (Pb) 6010B 26.9 10 96.9 96.7 0.3 30 70-130
Molybdenum
(Mo) 6010B ND 10 101.7 101.9 0.2 30 70-130
Nickel (Ni) 6010B ND 10 91.1 93.1 2.1 30 70-130
Selenium (Se) 6010B ND 10 100.1 100.9 0.7 30 70-130
Silver (Ag) 6010B ND 10 110.5 113.7 2.9 30 70-130
Thallium (Tl) 6010B ND 10 89.2 88.0 1.3 30 70-130
Vanadium (V) 6010B 71.6 10 95.1 94.4 0.8 30 70-130
Zinc (Zn) 6010B 58.5 10 98.0 98.3 0.2 30 70-130
ND: Not Detected.

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
1016760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] 10-08-2020
EPA 6010B/7471A for CAM Metals
Batch QA/QC Report
Client: American Integrated Services Lab Job No: A010003 Project: HB-40219
Matrix: Soil Lab Sample I.D.: LCS
Batch No.: 1005-MS1 Date Analyzed: 10-05-2020
II. LCS Result
Unit: ppm
Analyte EPA Method LCS Value True Value Rec.% Accept. Limit Antimony (Sb) 6010B 11.25 10 112.5 80-120
Arsenic (As) 6010B 9.877 10 98.8 80-120
Barium (Ba) 6010B 9.760 10 97.6 80-120
Beryllium (Be) 6010B 9.451 10 94.5 80-120
Cadmium (Cd) 6010B 10.49 10 104.9 80-120
Chromium (Cr) 6010B 9.681 10 96.8 80-120
Cobalt (Co) 6010B 10.50 10 105.0 80-120
Copper (Cu) 6010B 9.770 10 97.7 80-120
Lead (Pb) 6010B 10.28 10 102.8 80-120
Molybdenum
(Mo) 6010B 10.15 10 101.5 80-120
Nickel (Ni) 6010B 10.40 10 104.0 80-120
Selenium (Se) 6010B 10.41 10 104.1 80-120
Silver (Ag) 6010B 10.86 10 108.6 80-120
Thallium (Tl) 6010B 10.44 10 104.4 80-120
Vanadium (V) 6010B 9.403 10 94.0 80-120
Zinc (Zn) 6010B 10.58 10 105.8 80-120
ND: Not Detected (at the specified limit).

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
116760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] 10-12-2020
Mr. John Farmer
American Integrated Services
1502 E. Opp Street
Wilmington, CA 90744
Project: HB-40219
Project Site: 21377 Magnolia St., Huntington Beach, CA 92646 Sample Date: 10-02-2020
Lab Job No.: A010003A
Dear Mr. Farmer:

Enclosed please find the analytical report for the sample(s) received by Alpha Scientific Corporation on 10-02-2020 and analyzed by the following EPA methods
EPA 6010B (Lead, STLC)
All analyses have met the QA/QC criteria of this laboratory.

The sample(s) arrived in good conditions (i.e., chilled, intact) and with a chain of custody record attached.

Alpha Scientific Corporation is a CA ELAP certified laboratory (Certificate Number 3007). Thank you for giving us the opportunity to serve you. Please feel free to call me at (562) 809-8880 if our laboratory can be of further service to you.

Sincerely,
Roger Wang, Ph.D.

Laboratory Director
Enclosures
This cover letter is an integral part of this analytical report.

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
216760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] Client: American Integrated Services Lab Job No.: A010003A Project: HB-40219
Project Site: 21377 Magnolia St., Huntingt on Beach, CA 92646 Date Sampled: 10-02-2020 Matrix: Soil Date Received: 10-02-2020
Batch No.: 1012-MS1 Date Analyzed: 10-12-2020
Date Reported: 10-12-2020
EPA 6010B (Lead, STLC)
Reporting Unit: mg/L (ppm)
Sample ID Lab ID Lead (Pb), STLC
MDL 0.1
PQL 0.2
Extraction Blank ND
DRM-1,
DRM-2,
DRM-3
A010003-1,2,3 1.52
Note: Sample Preparation: Extraction Procedures, STLC Me tals, Title 22, Chapter 11, Appendix II-1, 48 hours (10-07 to 10-09-2020).

MDL: Method Dectection Limit;
PQL: Practical Quantitation Limit;
ND: Not Detected (Below MDL)
J: Result is between MDL and PQL.

ALPHA SCIENTIFIC CORPORATION
Environmental Laboratories
316760 Gridley Road, Cerritos, CA 90703 Phone: (562) 809-8880, [email protected] 10-12-2020
EPA 6010B (Lead)
Batch QA/QC Report
Client: American Integrated Services Lab Job No: A010003A Project: HB-40219
Matrix: Soil Lab Sample I.D.: A010016-1
Batch No.: 1012-MS1 Date Analyzed: 10-12-2020
I. MS/MSD Report
Unit: ppm
Analyte Sample
Conc.

Spike
Conc.

MS
%Rec.

MSD
%Rec.
% RPD %RPD
Accept.

Limit
%Rec
Accept.

Limit
Lead (Pb) 19.6 10 100.8 103.9 3.0 30 70-130
II. LCS Result
Unit: ppm
Analyte LCS Value True Value Rec.% Accept. Limit
Lead (Pb) 10.58 10.0 105.8 80-120
ND: Not Detected (at the specified limit).

APPENDIX C

GEOSYNTEC (2023) GEOPHYSICAL OIL WELL

LOCATING SURVEY REPORT

3530 Hyland Ave., Suite 100
Costa Mesa, California 92626
PH 714.969.0800
FAX 714.969.0820
www.geosyntec.com

SC1369 Edison Park Geophysical Oil Well Locating Survey Letter Report 27 July 2023

Mr. Patrick Bannon
Capital Projects Administrator
Public Works Department – Engineering
City of Huntington Beach
2000 Main Street
Huntington Beach, California 92648

Subject: Letter Report – Geophysical Oil Well Locating Survey Edison Park, Huntington Beach, California
Dear Mr. Bannon:

Geosyntec Consultants, Inc. (Geosyntec) prepared this letter report for the City of Huntington Beach, Public Works Department (City). This letter documents the geophysical survey performed to locate the existing oil wells at the Edison Park, located at 21377 Magnolia Street, Huntington Beach, California (Site). The services documented in this letter were performed in general accordance with the Professional Services Contract between the City and Geosyntec f or As -Needed General Environmental Engineering Services, dated February 2021 and the scope of work described in our proposal dated July 3, 2023.

BACKGROUND AND PROJECT UNDERSTANDING
A review of the State of California Geologic Energy Management Division (CalGEM) database indicated the presence of two historical oil wells [Aldrich Fee #1 (API:
0405905847) and Aldrich #2 (API: 0405901101)] located at the northeast corner of the Site, within the approximate areas of proposed park improvements. The status of the two oil wells are listed as “plugged” per CalGEM’s database. While CalGEM records provide the approximate locations of the wells , the exact location s of these oil wells were unknown/needed to be confirmed to avoid potential disturbance to the wells.

Accordingly, t he objective of this project was to perform a non- intrusive geophysical survey to attempt to identify the interpreted locations of the two oil wells at the Site.

GEOPHYSICAL SURVEY
Geosyntec retained the services of a GEOVision Geophysical Services ( GEOVision), a geophysical specialty subcontractor to perform geophysical mapping survey at and near Mr. Patrick Bannon
27 July 2023

SC1369 Edison Park Geophysical Oil Well Locating Survey Letter Report the approximate locations of the two subject oil wells. The geophysical survey was performed on July 18, 2023, under the observation of Geosyntec field personnel.

The approximate location of the two oil wells were identified in the field using a Geometrics G858 cesium magnetometer (G858). This instrument measures the intensity of the magnetic field of the earth. Metallic-cased oil wells generally give rise to very high amplitude and broad magnetic anomalies and can typically be located using a magnetometer.

Once positive anomalies were detected for the two subject oil wells , magnetic data was acquired along a rectangular grid centered on the expected well locations . The magnetometer was used in conjunction with a Global Positioning System (GPS) for spatial control. The magnetometer was used to identify the magnetic field maxima associated with the well casing, the location of which was surveyed using GPS. The magnetic data and spatial data were stored in the instruments internal memory and downloaded to a laptop computer upon completion of the survey for data processing and interpretation.

Additional details on the geophysical method, field procedures, data processing, and results are provided in the Geophysical Oil Well Locating Survey Report pr epared by GEOVision and included here as Attachment A. Geosyntec’s Daily Field Report with photo logs summarizing the field activities is included here as Attachment B.

Approximate interpreted locations of the centers of the two Oil Wells based on the geophysical interpretation are shown in Figure 1 and summarized in Table 1.

Table 1. Approximate Interpreted Coordinates of the Center of the Identified Oil Wells
Oil Well Name Interpreted
Easting (US
Survey Feet)
Interpreted
Northing (US
Survey Feet)
Aldrich Fee #1 6037822.8 2185799.7
Aldrich #2 6037540.1 2185767.1

LIMITATIONS
Please note, the geophysical survey to locate the existing wells is a non -intrusive method and results can be affected by several factors that include soil characteristics at the site, Mr. Patrick Bannon
27 July 2023

SC1369 Edison Park Geophysical Oil Well Locating Survey Letter Report condition of the well casing and soil cover. The accuracy of the location identified by this method can vary and is generally considered approximate. The actual location of the well will require confirmation/verification via intrusive (i.e., excavation) work.

CLOSURE
We appreciate the opportunity to assist the City on this important project. Should you have any questions about this letter or require additional information, please do not hesitate to call Yonas Zemuy at (714) 465-1256.

Sincerely,
Sneha Upadhyaya, Ph.D., E.I.T. (CA)
Senior Staff Professional
Yonas Zemuy, P.E. (AZ, CA, NV)
Senior Principal Engineer
At
tachments:

Figure 1 – Approximate Inferred Locations of the Oil Wells Attachment A: GEOVision Geophysical Oil Well Locating Survey Report Attachment B: Geosyntec Daily Field Report

SC1369 Edison Park Geophysical Oil Well Locating Survey Letter Report

FIGURE
Aldrich Fee #1Aldrich #2
PROJECT NO:FIGURE
N:\CACADD\E\EDISION PARK\EDISON PARK-SC1369\FIGURES\1369F001 - Last Saved by: KViswanathan on 7/25/23

APPROXIMATE INFERRED LOCATION OF THEOIL WELLSGEOPHYSICAL OIL WELL LOCATING SURVEYEDISON PARKHUNTINGTON BEACH, CALIFORNIA JULY 20231SC1369
500SCALE IN FEET
N

STILWELL DR

MAGNOLIA ST
LEGENDAPPROXIMATE LIMITS OFEXISTING CANNERY STREETFORMER REFUSE DISPOSALSTATION WASTE [TRC, 2001]LATERAL LIMITS OF WASTEMATERIAL DELINATED DURINGGEOSYNTEC 2020 AND 2021EXPLORATIONSINTERPRETED LOCATION OF OILWELL AERIAL BACKGROUND IMAGERY: © 2023MICROSOFT CORPORATION, © 2023 MAXAR,© CNES (2023) DISTRIBUTION AIRBUS DS

SC1369 Edison Park Geophysical Oil Well Locating Survey Letter Report

ATTACHMENT A: GEOVISION GEOPHYSICAL

OIL WELL LOCATING SURVEY REPORT
1124 Olympic Dr., Corona, CA 92881 ph. 951-549-1234 fax 951-549-1236 www.geovision.com J
uly 25, 2023
Project Number 23241
M
r. Yonas Zemuy
Geosyntec Consultants
3530 Hyland Avenue, Suite 100
Costa Mesa, California 92625
S
ubject: Steel Oil Well Location at 21377 Magnolia Street, Huntington Beach, California
M
r. Zemuy:

On
July 18th, 2023, a geophysical investigation was conducted for two suspected oil wells at the site located above, in Edison Park in the city of Huntington Beach.

M

ETHODOLOGY
The geophysical instrument used during this investigation consisted of a Geometrics G858 optically pumped cesium-vapor magnetometer (G858). This magnetometer measures the intensity of the earth's magnetic field in nanoteslas (nT) and, optionally, the vertical gradient of the earth’s magnetic field in nanoteslas per meter (nT/m). Buried ferrous metallic objects give rise to anomalies in the earth’s magnetic field. These anomalies are generally dipolar with a positive response south and a negative response north of the object. The dimensions and amplitude of a magnetic anomaly are a function of the size, mass, depth, and magnetic properties of the source. Magnetometers can typically locate a metallic-cased oil well to depths of over 15 feet providing background noise levels are not too high and the steel is not extensively corroded.

F

IELD PROCEDURE
Before conducting a magnetic survey, an attempt was made to locate each of the existing oil wells using the magnetometer in search mode. Two areas with anomalies were relatively clear and therefore a magnetic survey was conducted in these areas. The magnetometer was used in conjunction with the GPS system for spatial control. GPS data were collected in the geodetic coordinate system and then converted to California State Plane 1983, NAD83 (Conus), Zone VI (0406) in US Survey Feet, during data processing.

Positions were taken using a Spectra Precision GPS system with Centerpoint RTX corrections.

P
rior to data acquisition, the G858 was programmed with the appropriate sampling interval and GPS input settings. Spatial information was sent to the console at 1 second intervals using a GGA NMEA stream. Magnetic data and spatial data were downloaded

23241 Geosyntec Huntington Page 2 July 25, 2023
1124 Olympic Dr., Corona, CA 92881 ph. 951-549-1234 fax 951-549-1236 www.geovision.com to a laptop computer at the end of the survey using the program MAGMAP 2000 by Geometrics, Inc.

Details on the geophysical method can be found in the attached technical note titled “Magnetic Method”.

DATA PROCESSING
A color-enhanced contour map of the magnetic data was generated using the GEOSOFT® Oasis montaj TM geophysical mapping system. The map was color- enhanced to aid in the interpretation of subtle anomalies. Prior to map generation, a number of preprocessing steps were completed and included:
• Backup of all original field data files to computer.
• Correcting of all data acquisition errors (typically removing null data and erroneous GPS points).
• Reformatting field data files to free format XYZ files containing at a minimum GPS time and field measurements.
• Merging GPS position data and geophysical data using commercial and in-house software.
• Merging of multiple data files into a single file and sorting, if necessary. • Converting of data files to State Plane northings and eastings.

These data adjustments were made using a combination of commercial and proprietary software. Adjustments made to data files and resulting file names were documented and are retained in project files.

The output of the data preprocessing was a data file containing the magnetic total field response. Data processing steps included the following:
• Reformatting of data files to GEOSOFT® format.
• Generating final map scale.
• Gridding data using down- and cross-line splines or minimum curvature. • Masking grid in areas where data not acquired (i.e. around site perimeter or building).
• Applying Hanning filter to smooth the data, as necessary. • Generating color zone file describing color for different data ranges. • Contouring the data.
• Generating map surrounds (title block, legend, scale, color bar, north arrow, etc.). • Annotating anomalies.
• Merging various plot files and plotting final map.

The names of the files generated and the processing parameters used were documented and are retained in project files. Files generated during the processing sequence were archived on a backup drive.

RESULTS
A site map with geophysical interpretation is presented in Figure 1. A map of total magnetic field response of the surveyed areas is presented in Figure 2. The coordinates 23241 Geosyntec Huntington Page 3 July 25, 2023
1124 Olympic Dr., Corona, CA 92881 ph. 951-549-1234 fax 951-549-1236 www.geovision.com shown on the maps reference the California State Plane, NAD83 (Conus), Zone VI (0406), US survey feet coordinate system. The color bar indicates the amplitude of the measured quantity with magenta and dark blue indicating high and low amplitudes, respectively. Light orange, yellow, and light green indicate average "background" values of the measured quantity. A typical magnetic oil well response is a round anomaly that is high in amplitude, shown in the attached Technical Note. However, atypical magnetic oil well responses can occur, though less common.

Th
ere were two broad, positive high amplitude anomalies located within the surveyed areas, with values over 48,000 nT, indicative of metal oil wells. For reference, background magnetic field strength at this site was around 46,000 nT. GPS locations from the approximate center of each such anomaly are provided in Table 1. The characteristics of the anomalies indicate that the top of the metallic casings are likely located within the upper 15 feet. Other anomalies such as buried electric lines, an unknown line, and a small buried metallic object located within the survey area are labeled on the figures.

Well Name Interpreted Easting
(US Survey feet)
Interpreted Northing
(US Survey feet)
Peak
Amplitude (nT)
Aldrich Fee 1 6037822.8 2185799.7 49,800
Aldrich 2 6037540.1 2185767.1 48,300
Table 1: Coordinates of Possible Oil Well Anomalies
We
recommend the source of each anomaly is uncovered to confirm its source and location.

If
you have any questions concerning this investigation, please call us at 951-549-1234, or email at [email protected].

Si
ncerely,
GEOVision Geophysical Services
Emily
Feldman, PGp Project Geophysicist
Atta
chments:

Figure 1 – Site Map with Geophysical Interpretation
Figure 2 – Total Magnetic Field Response
Technical Note – Magnetic Method

Notes:

Coordinate System: NAD 1983 StatePlane California VI FIPS 0406 Feet Base map source: City of Huntington Beach (2022), Maxar Street Light Pole
Monitoring Well
Small Buried Metallic Object / Debris
Underground Electric Line
Underground Utility Line (Unknown type)
Interpreted Location of Oil Well

CREATED FOR

GEOSYNTEC

SITE LOCATED AT
21377 MAGNOLIA ST

HUNTINGTON BEACH, CALIFORNIA
FIGURE 1

SITE MAP

WITH GEOPHYSICAL INTERPRETATION
7/25/2023
23241
E Feldman
T Rodriguez
A Martin
GV_23241
Date:

GV Project:

Developed by:

Drawn by:

Approved by:

File Name:

Stilwell Dr
Vault
BMW
2 1
218590021858502185800218575021857002185650
218590021858502185800218575021857002185650
6037900603785060378006037750603770060376506037600603755060375006037450 6037900603785060378006037750603770060376506037600603755060375006037450 25 0 25 5012.5
US Survey Feet
Easting (US Ft)
Northing (US Ft)

MAGNETIC METHOD
The magnetic method involves the measurement of the earth's magnetic field intensity. Typically the total magnetic field and/or vertical magnetic gradient is measured. Measurements of the horizontal or vertical component or horizontal gradient of the magnetic field may also be made.

Anomalies in
the earth's magnetic field are caused by induced or
remanent magnetism. Induced magnetic anomalies are the result of secondary magnetization induced in a ferrous body by the earth’s magnetic field. The shape, dimensions, and amplitude of an induced magnetic anomaly is a function of the orientation, geometry, size, depth, and magnetic susceptibility of the body as well as the intensity and inclination of the earth's magnetic field in the survey area. Buried ferrous metallic objects, such as pipes, drums, tanks, and debris generally give rise to dipolar anomalies with a positive response south and a negative response north of the object. The magnetic method is an effective way to search for small metallic objects because magnetic anomalies have spatial dimensions much larger than those of the objects. An oil well typically gives rise to a monopolar anomaly with a very high amplitude, positive peak several feet south of the well and a low amplitude, broad negative response to the north. The magnetic anomaly over a buried oil well often has a diameter of over 50 feet and amplitude of several thousand nanoteslas, depending on depth and casing characteristics. Magnetometers can typically locate an abandoned oil well to depths of over 20 feet providing that background noise levels are not too high and the well casing is not significantly corroded. Magnetometers are not able to detect nonferrous metals such as aluminum and brass.

Geometrics G-858 Magnetometer
The magnetic method is typically used to:
 Locate abandoned steel well casings

Locate buried tanks and pipes
 Locate pits and trenches containing
buried metallic debris
 Detect buried unexploded ordnance
(UXO)
 Map old waste sites and landfill
boundaries
 Clear drilling locations
 Map basement faults and geology
 Investigate archaeological sites
1124 Olympic Drive, Corona, California 92881, ph. 951-549-1234, fx. 951-549-1236, www.geovision.com Magnetic Survey to Locate
Abandoned Oil Wells
Magnetic Survey to Locate Pits Containing
Buried Metallic Containers

SC1369 Edison Park Geophysical Oil Well Locating Survey Letter Report

ATTACHMENT B: GEOSYNTEC DAILY FIELD
REPORT

DAILY FIELD REPORT
PROJECT: Edison Park Geotech Support
LOCATION: Huntington Beach, California PROJECT NO.: SC1369 TASK NO.: 03 DESCRIPTION: Geophysical Oil Well Locating Survey CONTRACTOR: GEOVision DAY OF WEEK: Tuesday DATE: July 18, 2023
WEATHER: Sunny, Low 64°F High 82°F

1 of 3
Time Field Work Activities
0700 S. Upadhyaya (Geosyntec) arrived on site at the Edison Park and met with GEOVision crew E. Feldman and E. Vasquez. 0705 Geosyntec and GEOVision discussed health and safety. 0710 GEOVision started the geophysical oil well locating survey at the northeastern corner of the Edison Park using the Geometrics G858 cesium magnetometer. Other equipment used included Fisher metal detector and Ground Penetrating Radar (GPR).
0730-
0945
GEOVision detected strong anomalies that were identified as the potential location of the two oil wells. GEOVision collected magnetic data around the center of the identified approximate locations of the two wells and surveyed the approximate location of the two oil wells using GPS units. GEOVision also marked the approximate centers of the wells in the field using stakes/whiskers (flushed to ground).
0945 GEOVision completed the survey.
1000 GEOVision departed the site. S. Upadhyaya (Geosyntec) measured straight line distances to the oil wells from atleast three fixed objects and removed the “No Parking” signs per City’s request. 1030 Geosyntec departed the site.

Hours on-site: 3.5 hrs; Travel time: 0.5 hrs

DAILY FIELD REPORT
PROJECT: Edison Park Geotech Support
LOCATION: Huntington Beach, California PROJECT NO.: SC1369 TASK NO.: 03 DESCRIPTION: Geophysical Oil Well Locating Survey CONTRACTOR: GEOVision DAY OF WEEK: Tuesday DATE: July 18, 2023
WEATHER: Sunny, Low 64°F High 82°F

2 of 3

Approximate Inferred Oil Well #1 location (looking west) Approximate Inferred Oil Well #2 location (looking south)

Geophysical survey being performed using the magnetometer at Oil Well #1 location (looking south) Geophysical survey being performed using the Fisher metal detector around the Oil Well #2 area.

DAILY FIELD REPORT
PROJECT: Edison Park Geotech Support
LOCATION: Huntington Beach, California PROJECT NO.: SC1369 TASK NO.: 03 DESCRIPTION: Geophysical Oil Well Locating Survey CONTRACTOR: GEOVision DAY OF WEEK: Tuesday DATE: July 18, 2023
WEATHER: Sunny, Low 64°F High 82°F

3 of 3

Approximate inferred location of Oil Well #2 Approximate inferred location of Oil Well #1

APPENDIX D

ASCE7 HAZARD TOOL OUTPUT

ASCE 7 Hazards Report
Address:

No Address at This Location
Standard: ASCE/SEI 7-16 Latitude: 33.652693
Risk Category: II Longitude: -117.9721
Soil Class: D - Default (see
Section 11.4.3)
Elevation: 6.7946934949892395 ft
(NAVD 88)