Att #11 CEQA Environmental Compliance Checklist 2-2026 — City Council/Public Financing Authority, March 3, 2026 (part 2 of 3)

Fuel Consumption Rate = Horsepower x Load Factor x Fuel Consumption Factor Where:

Fuel Consumption Factor for a diesel engine is 0.04 gallons per horsepower per hour (gal/hp/hr) and a gasoline engine is 0.06 gal/hp/hr.

Source: Refer to CalEEMod outputs for assumptions used in this analysis. 5 Hutton Centre Drive, Suite 500 | Santa Ana, CA 92707
Office: 949-472-3505 | Fax: 949-472-8373
September 8, 2025 JN 208581

CITY OF HUNTINGTON BEACH
Ashley Wysocki, Director of Community & Library Services Director of Community & Library Services
2000 Main Street
Huntington Beach, CA 92648
SUBJECT: Biological Resources Assessment for the Edison Park Reconfiguration and Improvements Project in the City of Huntington Beach, Orange County, California
Dear Ashley Wysocki,
Michael Baker International, Inc. is pleased to submit this technical report documenting the results of a biological resources assessment for the proposed Edison Park Reconfiguration and Improvements Project (project or project site) located at Edison Park in the City of Huntington Beach, Orange County, California. The biological study area (BSA) included in this assessment is 51.26 acres, which incorporates the proposed project’s limits of disturbance (35.76 acres) plus a 100-foot buffer (15.5 acres). This report is intended to satisfy the requirements of the California Environmental Quality Act (CEQA).

1.0 PROJECT LOCATION
The approximately 35.76-acre project site is located in the City of Huntington Beach, Orange County (Attachment A, Figure 1, Regional Vicinity). The project site is located at 21377 Magnolia Street; is bounded by Hamilton Avenue to the south, Magnolia Street to the east, and residential development to the north and west; and is within Section 13, Township 06 South, Range 11 West, of the Newport Beach, California 7.5-minute United States Geological Survey (USGS) topographic quadrangle map (Attachment A, Figure 2, Site Vicinity). Surrounding land uses include residential development to the north, Edison High School to the east, commercial development and disturbed open space to the south, and residential development to the west.

2.0 PROJECT DESCRIPTION
The Edison Park Reconfiguration and Improvements Project aims to reconfigure the park and introduce new amenities primarily over non-landfill areas, addressing issues of land settlement affecting existing facilities (Attachment A, Figure 3, Conceptual Reconfiguration Plan). Proposed improvements may be implemented in up to three phases and include demolition of aging or condemned amenities, construction of new sports courts, an all-inclusive playground, expanded Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 2 parking, and new walkways. Upon completion, the park will offer diversified recreational opportunities and improved accessibility.

3.0 EXISTING SITE CONDITIONS
The BSA is located within an urbanized area of Huntington Beach and has been developed with a city park since 1974. The elevation is approximately 5 feet above mean sea level. Soils on-site are mapped as Bolsa silt loam in the online Natural Resources Conservation Service (NRCS) web soil survey (NRCS 2025). Representative site photos are included in Attachment B.

4.0 METHODS

4.1 Literature Review
Prior to conducting the field survey, Michael Baker conducted a thorough literature review and records search to characterize existing site conditions and assess the potential for special-status biological resources to occur that might pose a constraint to project implementation.1 A query of the California Natural Diversity Database (CNDDB; CNDDB 2025a) and California Native Plant Society (CNPS) Online Inventory of Rare and Endangered Plants of California (CNPS 2025) was conducted to obtain a list of special-status plant and wildlife species occurrence records within the USGS Los Alamitos, Anaheim, Orange, Seal Beach, Newport Beach, Tustin, and Laguna Beach, California 7.5-minute quadrangle maps. The US Fish and Wildlife Service (USFWS) Information for Planning and Consultation (IPaC) online database was also reviewed to identify special-status species and other resources, such as critical habitat, known or expected to occur on the project site or within the immediate vicinity (USFWS 2025a). Other sources of information about the project site and surrounding area include the NRCS Web Soil Survey (NRCS 2025), the USFWS National Wetlands Inventory (USFWS 2025b), Google Earth (2025), and Historic Aerials.com (2025). In addition, a 2022 arborist survey was reviewed prior to the site visit (Applegate 2022). All the information obtained informed our understanding of the BSA and assisted with the field survey and subsequent analysis. The results presented in this report provide a detailed assessment of the suitability of the habitat on-site to support special-status plant and wildlife species and other sensitive natural resources.

4.2 Habitat Assessment/Field Survey
Michael Baker biologists Stephen Anderson and Trina Ming conducted a general biological resources survey and habitat assessment on August 14, 2025, between 0700 and 0840 hours to document existing conditions and conduct a habitat assessment for special-status plant and wildlife species and sensitive natural communities, and to determine the presence of aquatic resources within the BSA. Weather conditions included overcast skies, temperatures ranging from 71 to 72 degrees Fahrenheit, and wind speeds ranging from 1 to 2 miles per hour. 1 Special-status refers to plant and wildlife species that are federal or state-listed, proposed, or candidates; plant species that have been designated a California Rare Plant Rank of 1, 2, or 4 by the California Native Plant Society; wildlife species that are designated by the California Department of Fish and Wildlife as Fully Protected or Species of Special Concern; and other state or locally rare vegetation communities.

Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 3 Classification of the on-site vegetation communities and other land uses is based on the descriptions of terrestrial vegetation classification systems described in A Manual of California Vegetation (Sawyer et al. 2009). In addition, site characteristics such as soil condition, topography, hydrology, anthropogenic disturbances, indicator species, condition of on-site vegetation communities, and the presence of potentially regulated jurisdictional features were noted. A formal aquatic resources delineation was not conducted. Michael Baker used geographic information systems (GIS) software to digitize the mapped vegetation communities and overlaid the data onto an aerial photograph to further analyze existing conditions and quantify the acreages of each vegetation community on-site.

All plant and wildlife species observed during the field survey were recorded. Plant species observed were identified by visual characteristics and morphology in the field while unusual and less familiar plant species were photographed and later identified using taxonomic guides. Plant species nomenclature and taxonomy follows The Jepson Manual: Vascular Plants of California, second edition (Baldwin et al. 2012) and scientific names are provided immediately following common names of plant species (first reference only). Wildlife detections were made through aural and visual detection, as well as observation of sign including scat, trails, tracks, burrows, and nests. Field guides used to assist with identification of species during the field survey included The Sibley Guide to Birds (Sibley 2014) for birds, A Field Guide to Western Reptiles and Amphibians (Stebbins 2003) for herpetofauna, and A Field Guide to Mammals of North America (Reid 2006) for mammals. Wildlife species taxonomy follows the North American Butterfly Association (NABA 2025) for butterflies, the Society for the Study of Amphibians and Reptiles (Crother et al. 2017) for herpetofauna, the American Ornithological Society for birds (Chesser et al. 2024), and Wilson and Reeder (2005) for mammals. Scientific names are provided immediately following common names of wildlife species (first reference only).

4.3 Special-Status Species Potential to Occur Assessment The potential for special-status species to occur in the BSA was evaluated based on each species' known geographic distribution and elevation range; species-specific habitat requirements (e.g., vegetation communities/land covers, soils, hydrology, slope/aspect, and other requirements); life history traits (e.g., disturbance tolerance); and Michael Baker biologists’ expertise, knowledge, and best professional judgement. Current and historical records of species identified during the literature review were also considered during the analysis; however, a species' potential to occur determination was not solely based on the age or location of these previously documented records. The current regulatory/conservation status of special-status plant and wildlife species was verified through lists and resources provided by the California Department of Fish and Wildlife (CDFW), specifically the Special Animals List (CNDDB 2025b) and Special Vascular Plants, Bryophytes, and Lichens List (CNDDB 2024c). The potential to occur categories used in this analysis are defined as follows:
• Present: The species was observed or detected within the BSA. • Expected: The BSA is within the known geographic distribution and elevation range of the species, there is high quality suitable habitat (considering vegetation, soils, and other factors) is present, and there is viable landscape connectivity to a local, known extant population(s) or sighting(s) within the study area.

Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 4 • Moderate: The BSA is within the known geographic distribution and elevation range of the species, there is moderate to low quality suitable habitat (considering vegetation, soils, and other factors), and there is limited or no landscape connectivity to a local, known, extant population.
• Not Expected: The BSA is outside the known geographic distribution and elevation range of the species, there is marginal to no suitable habitat, and there is no connectivity to known, extant populations.
• Absent: The species was not detected during focused or agency-approved protocol surveys.

5.0 RESULTS

5.1 Vegetation Communities and Land Covers
The BSA consists entirely of ornamental landscaped and developed areas (Table 1 and Attachment A, Figure 4, Vegetation Communities and Land Cover Types). Ornamental landscaped areas within the project site consist of trees, landscape vegetation, and open grass fields associated with the park. Development within the project site includes buildings, asphalt parking areas, sports courts, and other associated structures. Vegetation on-site is limited to turf grass, ornamental landscaping, and planted trees. A total of 95 plant species were documented during the field survey, 7 (7 percent) native and 88 (93 percent) non-native species.

The dominant species on-site is Bermuda grass (Cynodon dactylon) due to the majority of the project site consisting of open grass fields of Bermuda grass. The southwest portion of the project site also had a large area entirely dominated by iceplant (Carpobrotus edulis). Multiple ornamental tree species are also present throughout the park, including red gum (Eucalyptus camaldulensis), olive (Olea europaea), Japanese black pine (Pinus thunbergiana), and holly oak (Quercus ilex).

An arborist survey conducted in 2022 identified 228 individual trees on-site (Applegate 2022).

The area surrounding the BSA consists of residential and commercial development. Attachment B includes representative photos of the project site, and Attachment C contains a list of plant species observed.

TABLE 1. VEGETATION COMMUNITIES AND LAND COVER TYPES
Vegetation Community/Land Cover
Type
Project Site
(acres)
100-foot
Buffer (acres) Total (acres)
Developed 25.68 1.71 27.39
Ornamental Landscaping 10.08 13.79 23.87
Total 35.76 15.5 51.26

5.2 General Wildlife Inventory
Eleven wildlife species were observed during the field survey, eight native (73 percent) and three non-native (27 percent). These include American crow (Corvus brachyrhynchos), European Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 5 starling (Sturnus vulgaris), Eurasian collard-dove (Streptopelia decaocto), black phoebe (Sayornis nigricans), western bluebird (Sialia mexicana), Swinhoe’s white-eye (Zosterops simplex), Cassin’s kingbird (Tyrannus vociferans), mourning dove (Zenaida macroura), Anna’s hummingbird (Calypte anna), house finch (Haemorhous mexicanus), and California ground squirrel (Otospermophilus beecheyi) (Attachment C).

5.3 Special-Status Biological Resources
Sensitive Natural Communities
Nine natural communities considered sensitive by the CDFW were reported in the CNDDB from the region:
• California Walnut Woodland
• Southern California Arroyo Chub/Santa Ana Sucker Stream • Southern Coast Live Oak Riparian Forest
• Southern Coastal Salt Marsh
• Southern Cottonwood Willow Riparian Forest
• Southern Dune Scrub
• Southern Foredunes
• Southern Sycamore Alder Riparian Woodland
• Valley Needlegrass Grassland
The project site is developed with ornamental and landscaped vegetation and does not support native vegetation. Therefore, these sensitive natural communities do not occur.

Special-Status Plant Species
Based on the results of the literature review and records search, a total of 55 special-status plant species were analyzed for their potential to occur within the BSA (Attachment D). After a review of specific habitat preferences, known distributions, and elevation ranges, and considering the existing developed conditions of the BSA and lack of native habitat, no special-status plant species have the potential to occur within the BSA. In addition, the BSA is not within designated critical habitat for any listed plant species.

Special-Status Wildlife Species
Based on the results of the literature review and records search, a total of 43 special-status wildlife species were analyzed for their potential to occur within the BSA (Attachment D). After a review of specific habitat preferences, known distributions, and elevation ranges, and considering the existing developed conditions of the BSA, two special-status wildlife species have a moderate potential to occur within the BSA: burrowing owl (Athene cunicularia) and monarch butterfly (Danaus plexippus plexippus). Although no sign (whitewash, pellets, feathers) of burrowing owls was observed within the BSA, suitable burrows and habitat are present, primarily within areas dominated by iceplant. Monarch may be observed flying through the BSA or utilizing trees to roost temporarily but is not expected to breed on-site due to the lack of suitable host plants (i.e., Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 6 milkweed). Furthermore, monarch is not expected to overwinter within the BSA due to the lack of suitable habitat. The nearest known overwintering site is in Costa Mesa, approximately 1.7 miles east (Xerces n.d.). More than two individuals have not been observed at the overwintering site during any given year since 2014. The BSA is not within designated critical habitat for any listed wildlife species.

State and Federal Jurisdictional Aquatic Features
Three key agencies regulate activities within inland lakes, streams, wetlands, and riparian areas in California. The US Army Corps of Engineers (USACE) Regulatory Branch regulates activities that result in the discharge of dredged or fill material into waters of the U.S., including wetlands, pursuant to Section 404 of the Clean Water Act and Section 10 of the Rivers and Harbors Act. Of the state agencies, the Santa Ana Regional Water Quality Control Board (RWQCB) regulates discharges to waters of the State, including wetlands, pursuant to Section 401 of the Clean Water Act, Section 13263 of the California Porter-Cologne Water Quality Control Act, State Wetland Definition and Procedures for Discharges of Dredged or Fill Material to Waters of the State; and the CDFW regulates alterations to lakes, streambeds, and associated riparian habitat pursuant to Section 1600 et seq. of the California Fish and Game Code (CFGC).

As noted previously, the BSA is underlain by one soil type, Bolsa silt loam. This soil type is characterized by somewhat poorly drained silt loam textures and no hydric soil indicators.

The USFWS National Wetlands Inventory does not have any mapped features within the BSA.

The nearest known drainage feature is Huntington Beach Channel, a channelized drainage facility approximately 0.1 mile south of the BSA.

The site visit confirmed the absence of any features or riparian habitat that may be subject to the jurisdiction of the USACE, RWQCB, or CDFW. A formal jurisdictional delineation is not required.

5.4 Wildlife Corridors and Habitat Linkages
Wildlife corridors link areas of suitable habitat that are otherwise separated by areas of nonsuitable habitat such as rugged terrain, changes in vegetation, or human disturbance. Wildlife corridors are essential to the regional ecology of a species because they provide avenues of genetic exchange and allow animals to access alternative territories as dictated by fluctuating population densities. Fragmentation of open space areas by urbanization creates “islands” of wildlife habitat that are more or less isolated from each other. Corridors mitigate the effects of this fragmentation by (1) allowing animals to move between remaining habitats, thereby permitting depleted populations to be replenished and promoting genetic exchange; (2) providing escape routes from fire, predators, and human disturbances, thus reducing the risk of catastrophic events (such as fire or disease) that could lead to local extinction; and (3) serving as travel routes for individual animals as they move within their home ranges in search of food, water, mates, and shelter. Wildlife corridors are usually bounded by urban land areas or other areas unsuitable for wildlife. The corridor generally contains suitable cover, food, and/or water to support species and facilitate movement while in the corridor. Larger, landscape-level corridors (often referred to as “habitat or landscape linkages”) can provide both transitory and resident habitat for a variety of species. Although it is commonly used as a synonym for wildlife corridor, a habitat linkage refers Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 7 to a more substantial, or wider, land connection between two habitat areas. Habitat linkages allow for the periodic exchange of animals between habitat areas, which is essential to maintain adequate gene pools.

The BSA is within an urbanized area of the City of Huntington Beach. The BSA is not within or adjacent to any open space areas or other natural or human-made features that would be used by wildlife as a corridor or habitat linkage. The nearest features that may be used as wildlife corridors include the channelized Huntington Beach Channel approximately 0.1 mile south of the BSA and the channelized Talbert Channel approximately 0.25 miles east of the BSA.

6.0 IMPACT ANALYSIS
The following discussion examines the impacts to biological resources that may occur as a result of the proposed project. The determination of impacts is based on both the features of the proposed project and the biological values of the habitat and sensitivity of plant and wildlife species potentially affected.

Impacts to biological resources are evaluated using criteria consistent with the policy objectives of CEQA, including Section 21001(c) of the California Public Resources Code. The analysis considers the questions outlined in Appendix G of the CEQA guidelines, which are used to identify whether the project could result in impacts to biological resources. This assessment documents the potential for impacts and, where appropriate, provides avoidance and minimization measures that are part of the project design to further reduce the potential for adverse effects.

6.1 Impacts to Special-Status Species
a) Would the project have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service?
The project site is developed and supports ornamental landscaping, which is not suitable habitat for most special-status plant or wildlife species. No special-status plants are expected to occur due to the lack of suitable habitat.

Although no sign (whitewash, pellets, feathers) of burrowing owls was observed within the BSA, suitable burrows and habitat are present, and this species has the potential to occur. A preconstruction burrowing owl survey is recommended to avoid potential impacts associated with project construction.

Monarch may utilize the trees on-site to roost temporarily; however, if they occurred, they would be expected in very low numbers due to the developed nature of the BSA. Impacts would not remove habitat that would affect the long-term status of monarch populations.

Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 8

6.2 Impacts to Sensitive Natural Communities
b) Would the project have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Game or U.S. Fish and Wildlife Service? The project site is completely developed and supports ornamental landscaping and disturbed, weedy vegetation. There are no riparian habitats or other sensitive natural communities present within the project site boundaries. Therefore, the project would have no impact on riparian habitats or other sensitive natural communities.

6.3 Impacts to State or Federal Wetlands
c) Would the project have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means?
The project site is entirely developed and does not contain any state or federally protected wetlands. Therefore, there would be no impact to state or federally protected wetlands.

6.4 Impacts to Wildlife Movement or Wildlife Corridors
d) Would the project interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites?
The project site is within a developed, urban area and is surrounded on all sides by existing development. The project site has no connectivity to any natural habitats that would serve as migration corridors. Therefore, there would be no impact to native wildlife movement or wildlife corridors.

To maintain compliance with the federal Migratory Bird Treaty Act (MBTA) and the CFGC2 it is
recommended that a preconstruction nesting bird clearance survey be conducted if project-related activities are to be initiated during the bird nesting season (generally February 1 to August 31). 2 Section 3503 makes it unlawful to take, possess, or needlessly destroy the nest or eggs of any bird, except as otherwise provided by CFGC or any regulation made pursuant thereto; Section 3503.5 makes it unlawful to take, possess, or destroy any birds in the orders Falconiformes or Strigiformes (birds-of-prey); and Section 3513 makes it unlawful to take or possess any migratory non-game bird except as provided by the rules and regulations adopted by the Secretary of the Interior under provisions of the MBTA, as amended (16 United States Code § 703 et seq.).

Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 9

6.5 Conflicts with Local Policies or Ordinances
e) Would the project conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance?
The City of Huntington Beach Municipal Code Section 13.50.120 requires that a permit be obtained prior to the removal of any trees. The project will comply with all applicable local policies and ordinances.

6.6 Conflicts with Adopted Habitat Conservation Plan
f) Would the project conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan?
The project is not located within an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan.

7.0 AVOIDANCE AND MINIMIZATION MEASURES

7.1 Preconstruction Surveys
Burrowing Owl
A preconstruction burrowing owl clearance survey will be conducted no more than 14 days prior to any vegetation removal or ground disturbing activities to avoid impacts to burrowing owls and/or occupied burrows. The preconstruction clearance survey will be conducted by a qualified biologist using the methods outlined in the Staff Report on Burrowing Owl Mitigation (CDFG 2012). The survey findings will be documented and submitted to the City of Huntington Beach for review and file. If no burrowing owls or occupied burrows are detected, project activities may begin, and no additional avoidance and minimization measures are recommended.

If an occupied burrow is found within the development footprint and cannot be avoided, a burrowing owl exclusion and mitigation plan will be prepared in coordination with the California Department of Fish and Wildlife (CDFW) and approved by CDFW prior to initiating project activities. If an occupied burrow is detected outside, but within 500 feet of, the development footprint, a “no-disturbance” buffer will be established around the burrow location(s). The size of the buffer will be determined in coordination with CDFW and be based on the species breeding status and the proposed level of disturbance.

Nesting Birds
If construction commences during the bird breeding season (February 1 through August 31), a preconstruction survey for nesting birds will be conducted by a qualified biologist within three days prior to construction activities. The survey will occur within all suitable nesting habitat within the project impact area and a 100-foot buffer where access is permitted. If nesting birds are found, Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 10 an avoidance area will be established around the nest by the qualified biologist until it has been determined that the young have fledged or nesting activities have ceased. The size of the avoidance buffer will be determined by the qualified biologist based on the location of the nest and disturbance tolerance of the bird species. The project site will be resurveyed if there is a lapse in construction activities for more than seven days during the nesting season.

Please feel free to contact me at 949-330-4147 or at [email protected] with any questions you may have regarding the results and/or conclusions of this report.

Sincerely,
Stephen Anderson
Senior Biologist
Attachments
A. Figures
B. Site Photographs
C. Species Compendium
D. Special-Status Species Potential to Occur Tables
Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 11

REFERENCES
Applegate, Greg. 2022. Tree Preservation Plan for Edison Park, City of Huntington Beach.

Arborgate Consulting, Inc.

Baldwin, Bruce G., Douglas Goldman, David J. Keil, Robert Patterson, Thomas J. Rosatti, and Dieter Wilken. 2012. The Jepson Manual: Vascular Plants of California, 2nd ed, Thoroughly Revised and Expanded. University of California Press.

CDFG (California Department of Fish and Game). 2012. Staff Report on Burrowing Owl Mitigation.

Chesser, R. T., S. M. Billerman, K. J. Burns, C. Cicero, J. L. Dunn, B. E. Hernández-Baños, R. A.

Jiménez, O. Johnson, A. W. Kratter, N. A. Mason, and P. C. Rasmussen. 2024. Check-list of North American Birds (online). American Ornithological Society. https://checklist.americanornithology.org/.

CNDDB (California Natural Diversity Database). 2025a. RareFind 5 [Internet]. California Department of Fish and Wildlife [July 29, 2025].

CNDDB (California Natural Diversity Database). 2025b. Special Animals List. California Department of Fish and Wildlife. Sacramento, CA.

CNDDB (California Natural Diversity Database). 2025c. Special Vascular Plants, Bryophytes, and Lichens List. California Department of Fish and Wildlife. Sacramento, CA.

CNPS (California Native Plant Society), Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5). Accessed July 24, 2025. https://www.rareplants.cnps.org.

Crother, B.I., ed. 2017. Scientific and Standard English Names of Amphibians and Reptiles of North America North of Mexico, with Comments Regarding Confidence in Our Understanding. Herpetological Circular, no. 43. 8th ed. Shoreview, Minnesota: Society for the Study of Amphibians and Reptiles. https://ssarherps.org/wpcontent/uploads/2017/10/8th-Ed-2017-Scientific-and-Standard-English-Names.pdf.

Google (Google, LLC). 2025. Google Earth Pro, version 7.3.6.10201.

Historic Aerials. 2025. Subject matter search. Accessed August 5, 2025. http://www.historicaerials.com.

NABA (North American Butterfly Association). 2025. Checklist and English Names of North American Butterflies. Braby, M., Cassie, B., Edwards, A., Epstein, M., Glassberg, J., Hall, P.W., Heath, F., Hsu, Y.-F., Larsen, T., Lohman, D., Pierce, N., Scoble, M., Springer, J., Swengel, A., Tennent, J., Tudor, G., Vane-Wright, D., Viloria, A., West, J. and Yen, S.-H. North American Butterfly Association. Morristown, New Jersey. https://naba.org/butterfly-names-checklist/
NRCS (Natural Resources Conservation Service). 2025. Web Soil Survey. Accessed August 5, 2025. https://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx.

Biological Resources Technical Report September 8, 2025 Edison Park Reconfiguration and Improvements Project Page 12 Reid, F.A. 2006. A Field Guide to Mammals of North America. 4th ed. Houghton Mifflin Company.

Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A Manual of California Vegetation. 2nd Ed.

California Native Plant Society.

Sibley, D. A. 2014. The Sibley Guide to Birds. 2nd ed, Alfred A. Knopf, Inc..

Stebbins, R. C. 2003. A Field Guide to Western Reptiles and Amphibians. 3rd ed. Houghton Mifflin Company.

USFWS (US Fish and Wildlife Service). 2025a. Information for Planning and Consultation (IPaC). Accessed August 5, 2025. https://ipac.ecosphere.fws.gov/location/index.

USFWS (US Fish and Wildlife Service). 2025b. National Wetlands Inventory. Accessed August 5, 2025. https://fwsprimary.wim.usgs.gov/wetlands/apps/wetlands-mapper.

Wilson, D. E., and D. M. Reeder, eds. 2005. Mammal Species of the World: A Taxonomic and Geographic Reference. 3rd ed. Online version. Baltimore, Maryland: Johns Hopkins University Press.

Xerces (Xerces Society for Invertebrate Conservation). n.d. Western Monarch Overwintering Site Viewer. Accessed August 5, 2025. https://westernmonarchcount.org/map-ofoverwintering-sites/

ATTACHMENT A
Figures
COUNTY
COUNTY
COUNTY
COUNTY
COUNTY
COUNTY
Regional Vicinity
Figure 1
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EDISON PARK RECONFIGURATION AND IMPROVEMENTS PROJECT

BIOLOGICAL RESOURCES ASSESSMENT
Source: ArcGIS Online, 2018
^_
Project
Site
Project Location
^
°
0 2.5 5
Miles
Copyright:© 2013 National Geographic Society, i-cubed
Project Vicinity
Figure 2
°
0 0.5 1
Mile
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Project Site

EDISON PARK RECONFIGURATION AND IMPROVEMENTS PROJECT

BIOLOGICAL RESOURCES ASSESSMENT
Source: USGS 7.5-Minute topographic quadrangle maps: Harrison Mountain, Lake Arrowhead, San Bernardino North, and Silverwood Lake, California (2021) Conceptual Reconfiguration Plan
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EDISON PARK RECONFIGURATION AND IMPROVEMENTS PROJECT

BIOLOGICAL RESOURCES ASSESSMENT
Figure 3
Source: Nearmap/Raymore Imagery Service (2025)
°
Vegetation Communities and Land Cover Types
Source: Nearmap/Raymore Imagery Service (2025)

EDISON PARK RECONFIGURATION AND IMPROVEMENTS PROJECT

BIOLOGICAL RESOURCES ASSESSMENT
Figure 4
0 75 150 300
°
Feet
Legend
Project Site
Survey Area (100-foot Buffer)
Developed (27.39 acres)
Ornamental Landscaped (23.87 acres)
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ATTACHMENT B
Site Photographs

ATTACHMENT B

SITE PHOTOGRAPHS
Biological Resources Technical Report September 2025
Edison Park Reconfiguration and Improvements Project B-1 Photograph 1. Northwest-facing view from the southeast corner of the project site (33.650615°, -117.971279°).

Photograph 2. North-facing view of the landscaped area at the southern end of the project site (33.650822°, -117.974437°).

ATTACHMENT B

SITE PHOTOGRAPHS
Biological Resources Technical Report September 2025
Edison Park Reconfiguration and Improvements Project B-2 Photograph 3. View looking towards a burrow within the southwest portion of the project site (33.650707°, -117.975418°).

Photograph 4. View looking east at the southwest end corner of the project site (33.650580°, -117.977448°).

ATTACHMENT B

SITE PHOTOGRAPHS
Biological Resources Technical Report September 2025
Edison Park Reconfiguration and Improvements Project B-3 Photograph 5. View looking south at the northern end of the project site (33.653911°, -117.973486°).

Photograph 6. View looking south at the northeast corner of the project site (33.653911°, -117.971223°).

ATTACHMENT C
Species Compendiums

ATTACHMENT C

SPECIES COMPENDIUMS
*signifies introduced (non-native) species
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page C-1 Wildlife
Birds
CORVIDAE—CROWS & JAYS
Corvus brachyrhynchos—American crow
TROCHILIDAE—HUMMINGBIRDS
Calypte anna—Anna's hummingbird
TURDIDAE—THRUSHES
Sialia mexicana—western bluebird
FRINGILLIDAE—FRINGILLINE & CARDUELINE FINCHES & ALLIES
Haemorhous mexicanus—house finch
COLUMBIDAE—PIGEONS & DOVES
Streptopelia decaocto—Eurasian collared-dove*
Zenaida macroura—mourning dove
TYRANNIDAE—TYRANT FLYCATCHERS
Sayornis nigricans—black phoebe
Tyrannus vociferans—Cassin's kingbird
STURNIDAE—STARLINGS
Sturnus vulgaris—European starling*
Zosteropidae—
Zosterops simplex—Swinhoe's white eye*
Mammals
SCIURIDAE—SQUIRRELS
Otospermophilus beecheyi—California ground squirrel
Plants – Vascular Species

EUDICOTS
AIZOACEAE—Fig-marigold Family
Carpobrotus edulis—hottentot fig*
ANACARDIACEAE—Sumac Or Cashew Family
Schinus molle—Peruvian peppertree*
Schinus terebinthifolius—Brazilian peppertree*
APOCYNACEAE—Dogbane Family
Carissa macrocarpa—natal plun *
Nerium oleander—oleander*
Plumeria rubra—frangipani *
ASTERACEAE—Sunflower Family
Dimorphotheca fruticosa—shrubby daisybush*
Erigeron bonariensis—asthmaweed*
Gazania linearis—treasureflower*

ATTACHMENT C

SPECIES COMPENDIUMS
*signifies introduced (non-native) species
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page C-2 Plants – Vascular Species
Sonchus asper—spiny sowthistle*
Sonchus oleraceus—common sowthistle*
Taraxacum officinale—common dandelion*
Senecio barbertonicus—succulent bush ragwort*
BERBERIDACEAE—Barberry Family
Nandina domestica—heavenly bamboo*
BETULACEAE—Birch Family
Alnus rhombifolia—white alder
BIGNONIACEAE—Bignonia Family
Spathodea campanulata—African tulip tree*
Tecoma stans—yellow bells *
Chilopsis xcatalpa—Chilopsis x Catalpa*
BORAGINACEAE—Borage Family
Echium candicans—pride of Madeira*
BRASSICACEAE—Mustard Family
Hirschfeldia incana—short podded mustard*
CARYOPHYLLACEAE—Pink Family
Spergularia marina—saltmarsh sand-spurrey
CONVOLVULACEAE—Morning-glory Family
Dichondra micrantha—Asian ponysfoot*
CRASSULACEAE—Stonecrop Family
Aeonium arboreum—tree aenium*
Crassula ovata—jade plant*
CUCURBITACEAE—Gourd Family
Cupaniopsis anacardioides—carrotwood*
EUPHORBIACEAE—Spurge Family
Euphorbia tirucalli—Indiantree spurge*
FABACEAE—Legume Family
Acacia stenophylla—shoestring acacia *
Caesalpinia gilliesii—bird-of-paradise shrub*
Cercis occidentalis—Texas redbud
Tipuanu tipu—tipu tree *
Trifolium repens—white clover*
FAGACEAE—Oak Family
Quercus ilex—holly oak*
LINACEAE—Flax Family
Liquidambar styraciflua—sweetgum*
LYTHRACEAE—Loosestrife Family
Lagerstroemia indica—crape myrtle *

ATTACHMENT C

SPECIES COMPENDIUMS
*signifies introduced (non-native) species
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page C-3 Plants – Vascular Species
MAGNOLIACEAE—Magnolia Family
Magnolia grandiflora—southern magnolia *
MALVACEAE—Mallow Family
Brachychiton populneum—whiteflower kurrajong*
Lagunaria patersonia—cow itch tree*
Malvella leprosa—alkali mallow
MORACEAE—Mulberry Family
Ficus rubiginosa—rustyleaf fig*
Morus alba—white mulberry*
MYRTACEAE—Myrtle Family
Agonis flexuosa—peppermint tree*
Callistemon citrinus—lemon bottlebrush *
Corymbia citriodora—lemonscented gum*
Corymbia ficifolia—red flowering gum *
Eucalyptus camaldulensis—river redgum*
Eucalyptus cladocalyx—sugargum*
Eucalyptus polyanthemos—redbox*
Eucalyptus rudis—Western Australian floodedgum*
Eucalyptus sideroxylon—red ironbark*
Feijoa sellowiana—pineapple guava *
Lophostemon confertus—brisbane box *
Melaleuca quinquenervia—paperbark tree *
Tristaniopsis laurina—water gum *
NYCTAGINACEAE—Four O'clock Family
Bougainvillea spectabilis—great bougainvillea*
OLEACEAE—Olive Family
Fraxinus uhdei—evergreen ash*
Olea europaea—olive*
PLANTAGINACEAE—Plantain Family
Plantago major—common plantain*
PLATANACEAE—Plane Tree, Sycamore Family
Platanus ×hispanica—London planetree*
Platanus racemosa—California sycamore
POLYGALACEAE—Milkwort Family
Polygala fruticosa—petite butterflies*
PORTULACACEAE—Purslane Family
Portulaca oleracea—little hogweed*
ROSACEAE—Rose Family
Cotoneaster lacteus—milkflower cotoneaster*

ATTACHMENT C

SPECIES COMPENDIUMS
*signifies introduced (non-native) species
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page C-4 Plants – Vascular Species
Pyrus calleryana—flowering pear *
Rhaphiolepis indica—Indian hawthorn*
SALICACEAE—Willow Family
Xylosma congestum—shiny xylosma*
SCROPHULARIACEAE—Figwort Family
Myoporum laetum—myoporum*
VERBENACEAE—Vervain Family
Lantana montevidensis—trailing shrubverbena*
Phyla nodiflora—turkey tangle fogfruit

GYMNOSPERMS AND GNETOPHYTES
CUPRESSACEAE—Cypress Family
Juniperus chinensis—Chinese juniper*
Platycladus orientalis—oriental arborvitae*
PINACEAE—Pine Family
Pinus canariensis—Canary Island pine*
Pinus eldarica—Eldarica pine*
Pinus halepensis—aleppo pine*
Pinus pinea—Italian stone pine*
Pinus thunbergiana—Japanese black pine *
PODOCARPACEAE—No Common Name
Podocarpus macrophyllus—yew pine *

MONOCOTS
AGAVACEAE—Agave Family
Agave attenuata—foxtail agave*
ARECACEAE—Palm Family
Howea forsteriana—kentia palm*
Syagrus romanzoffiana—queen palm*
Washingtonia robusta—Washington fan palm*
Dypsis lutescens—areca palm
ASPARAGACEAE—Asparagus Family
Asparagus aethiopicus—Sprenger's asparagus fern*
ASPHODELACEAE—Asphodel Family
Aloe maculata—no common name*
Phormium tenax—New Zealand flax*
IRIDACEAE—Iris Family
Dietes grandiflora—large fortnight lily*
LILIACEAE—Lily Family
Agapanthus africanus—lily of the nile*
Hemerocallis fulva—orange daylily*

ATTACHMENT C

SPECIES COMPENDIUMS
*signifies introduced (non-native) species
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page C-5 Plants – Vascular Species
POACEAE—Grass Family
Brachypodium distachyon—purple false brome*
Bromus catharticus—rescuegrass*
Cynodon dactylon—Bermudagrass*
Eleusine indica—Indian goosegrass*
Festuca perennis—perennial rye grass*
Paspalum dilatatum—dallisgrass*
Poa annua—annual bluegrass*
Paspalum notatum—Bahia grass*

ATTACHMENT D
Special-Status Species Potential to Occur Tables

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-1

SPECIAL-STATUS PLANT SPECIES WITH POTENTIAL TO OCCUR IN STUDY AREA Scientific Name Common Name
Status
(Federal/State/Other)
Habitats/ Life Form/ Blooming Period/
Elevation Range (feet) Potential to Occur in BSA
Abronia maritima red sandverbenaNone/None/4.2/None Coastal dunes/perennial herb/Feb–Nov/0–330 Not expected to occur. No suitable habitat is present.

Abronia villosa var.
aurita
chaparral sandverbenaNone/None/1B.1/BLMS, USFS-SChaparral, Coastal scrub, Desert dunes; Sandy/annual herb/(Jan)Mar–Sep/245–5250
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Aphanisma blitoides aphanisma None/None/1B.2/None Coastal bluff scrub, Coastal dunes, Coastal scrub; Gravelly (sometimes), Sandy
(sometimes)/annual herb/Feb–June/5–1000
Not expected to occur. No
suitable habitat is present.

Astragalus hornii var.
hornii
Horn's milkvetchNone/None/1B.1/BLM-S Meadows and seeps, Playas; Alkaline, Lake Margins/annual herb/May–Oct/195–2790
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Astragalus
pycnostachyus var.
lanosissimus
Ventura Marsh
milk-vetch
FE/SE/1B.1/None Coastal dunes, Coastal scrub, Marshes and swamps (edges, coastal salt,
brackish)/perennial herb/(June)Aug–Oct/5–
115
Not expected to occur. No
suitable habitat is present.

Atriplex coulteri Coulter's
saltbush
None/None/1B.2/None Coastal bluff scrub, Coastal dunes, Coastal scrub, Valley and foothill grassland; Alkaline
(sometimes), Clay (sometimes)/perennial
herb/Mar–Oct/10–1510
Not expected to occur. No
suitable habitat is present.

Atriplex pacifica south coast
saltscale
None/None/1B.2/None Coastal bluff scrub, Coastal dunes, Coastal scrub, Playas/annual herb/Mar–Oct/0–460
Not expected to occur. No
suitable habitat is present.

Atriplex parishii Parish's
brittlescale
None/None/1B.1/USFS-S Chenopod scrub, Playas, Vernal pools; Alkaline/annual herb/June–Oct/80–6235
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-2 Scientific Name Common Name
Status
(Federal/State/Other)
Habitats/ Life Form/ Blooming Period/
Elevation Range (feet) Potential to Occur in BSA
Atriplex serenana var.
davidsonii
Davidson's
saltscale
None/None/1B.2/None Coastal bluff scrub, Coastal scrub; Alkaline/annual herb/Apr–Oct/35–655
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Bahiopsis laciniata San Diego
County viguiera
None/None/4.3/None Chaparral, Coastal scrub/perennial shrub/Feb– June(Aug)/195–2460
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Berberis nevinii Nevin's barberry FE/SE/1B.1/None Chaparral, Cismontane woodland, Coastal scrub, Riparian scrub; Gravelly (sometimes),
Sandy (sometimes)/perennial evergreen
shrub/(Feb)Mar–June/230–2705
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Calochortus weedii var.
intermedius
intermediate
mariposa-lily
None/None/1B.2/USFS-S Chaparral, Coastal scrub, Valley and foothill grassland; Rocky/perennial bulbiferous
herb/May–July/345–2805
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Calystegia felix lucky morninggloryNone/None/1B.1/None Meadows and seeps (sometimes alkaline), Riparian scrub (alluvial); Alkaline (sometimes),
Loam (sometimes)/annual rhizomatous
herb/Mar–Sep/100–705
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Centromadia parryi ssp.
australis
southern
tarplant
None/None/1B.1/None Marshes and swamps (margins), Valley and foothill grassland (vernally mesic), Vernal
pools/annual herb/May–Nov/0–1575
Not expected to occur. No
suitable habitat is present.

Chaenactis glabriuscula
var. orcuttiana
Orcutt's
pincushion
None/None/1B.1/None Coastal bluff scrub (sandy), Coastal dunes/annual herb/Jan–Aug/0–330
Not expected to occur. No
suitable habitat is present.

Chloropyron
maritimum ssp.
maritimum
salt marsh bird'sbeakFE/SE/1B.2/BLM-S Coastal dunes, Marshes and swamps (coastal salt)/annual herb (hemiparasitic)/May–
Oct(Nov)/0–100
Not expected to occur. The
study area is outside of the
species’ known elevation range.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-3 Scientific Name Common Name
Status
(Federal/State/Other)
Habitats/ Life Form/ Blooming Period/
Elevation Range (feet) Potential to Occur in BSA
Cistanthe maritima seaside cistanthe None/None/4.2/None Coastal bluff scrub, Coastal scrub, Valley and foothill grassland; Sandy/annual
herb/(Feb)Mar–June(Aug)/15–985
Not expected to occur. No
suitable habitat is present.

Comarostaphylis
diversifolia ssp.
diversifolia
summer holly None/None/1B.2/BLM-S Chaparral, Cismontane woodland/perennial evergreen shrub/Apr–June/100–2590
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Convolvulus simulans small-flowered
morning-glory
None/None/4.2/None Chaparral (openings), Coastal scrub, Valley and foothill grassland; Clay, Seeps,
Serpentine/annual herb/Mar–July/100–2430
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Deinandra paniculata paniculate
tarplant
None/None/4.2/None Coastal scrub, Valley and foothill grassland, Vernal pools; Sandy (sometimes), Vernally
Mesic (usually)/annual herb/(Mar)Apr–
Nov/80–3085
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Dichondra occidentalis western
dichondra
None/None/4.2/None Chaparral, Cismontane woodland, Coastal scrub, Valley and foothill grassland/perennial
rhizomatous herb/(Jan)Mar–July/165–1640
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Dudleya multicaulis many-stemmed
dudleya
None/None/1B.2/USFS-S Chaparral, Coastal scrub, Valley and foothill grassland; Clay (often)/perennial herb/Apr–
July/50–2590
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Dudleya stolonifera Laguna Beach
dudleya
FT/ST/1B.1/None Chaparral, Cismontane woodland, Coastal scrub, Valley and foothill grassland;
Rocky/perennial stoloniferous herb/May–
July/35–855
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Eleocharis parvula small spikerush None/None/4.3/None Marshes and swamps/perennial herb/(Apr)June–Aug(Sep)/5–9910
Not expected to occur. No
suitable habitat is present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-4 Scientific Name Common Name
Status
(Federal/State/Other)
Habitats/ Life Form/ Blooming Period/
Elevation Range (feet) Potential to Occur in BSA
Eriastrum densifolium
ssp. sanctorum
Santa Ana River
woollystar
FE/SE/1B.1/None Chaparral, Coastal scrub (alluvial fans); Gravelly (sometimes), Sandy
(sometimes)/perennial herb/Apr–Sep/300–
2000
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Eryngium aristulatum
var. parishii
San Diego
button-celery
FE/SE/1B.1/None Coastal scrub, Valley and foothill grassland, Vernal pools; Mesic/annual/perennial
herb/Apr–June/65–2035
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Euphorbia misera cliff spurge None/None/2B.2/None Coastal bluff scrub, Coastal scrub, Mojavean desert scrub; Rocky/perennial shrub/(Oct)Dec–
Aug/35–1640
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Harpagonella palmeri Palmer's
grapplinghook
None/None/4.2/None Chaparral, Coastal scrub, Valley and foothill grassland; Clay, Openings/annual herb/Mar–
May/65–3135
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Helianthus nuttallii ssp.
parishii
Los Angeles
sunflower
None/None/1A/None Marshes and swamps (freshwater, coastal salt)/perennial rhizomatous herb/Aug–
Oct/35–5005
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Horkelia cuneata var.
puberula
mesa horkelia None/None/1B.1/USFS-S Chaparral (maritime), Cismontane woodland, Coastal scrub; Gravelly (sometimes), Sandy
(sometimes)/perennial herb/Feb–
July(Sep)/230–2660
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Isocoma menziesii var.
decumbens
decumbent
goldenbush
None/None/1B.2/BLM-S Chaparral, Coastal scrub (often disturbed areas, sandy)/perennial shrub/Apr–Nov/35–
820
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-5 Scientific Name Common Name
Status
(Federal/State/Other)
Habitats/ Life Form/ Blooming Period/
Elevation Range (feet) Potential to Occur in BSA
Juglans californica Southern
California black
walnut
None/None/4.2/None Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland/perennial deciduous
tree/Mar–Aug/165–2955
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Juncus acutus ssp.
leopoldii
southwestern
spiny rush
None/None/4.2/None Coastal dunes (mesic), Coastal scrub, Marshes and swamps (coastal salt), Meadows and seeps
(alkaline seeps)/perennial rhizomatous
herb/(Mar)May–June/10–2955
Not expected to occur. No
suitable habitat is present.

Lasthenia glabrata ssp.
coulteri
Coulter's
goldfields
None/None/1B.1/BLM-S Marshes and swamps (coastal salt), Playas, Vernal pools/annual herb/Feb–June/5–4005
Not expected to occur. No
suitable habitat is present.

Lepidium virginicum
var. robinsonii
Robinson's
pepper-grass
None/None/4.3/None Chaparral, Coastal scrub/annual herb/Jan– July/5–2905
Not expected to occur. No
suitable habitat is present.

Lycium californicum California boxthornNone/None/4.2/None Coastal bluff scrub, Coastal scrub/perennial shrub/Mar–Aug(Dec)/15–490
Not expected to occur. No
suitable habitat is present.

Malacothrix saxatilis
var. saxatilis
cliff malacothrix None/None/4.2/None Coastal bluff scrub, Coastal scrub/perennial rhizomatous herb/Mar–Sep/10–655
Not expected to occur. No
suitable habitat is present.

Microseris douglasii
ssp. platycarpha
small-flowered
microseris
None/None/4.2/None Cismontane woodland, Coastal scrub, Valley and foothill grassland, Vernal pools;
Clay/annual herb/Mar–May/50–3510
Not expected to occur. No
suitable habitat is present.

Nama stenocarpa mud nama None/None/2B.2/None Marshes and swamps (lake margins, riverbanks)/annual/perennial herb/Jan–
July/15–1640
Not expected to occur. No
suitable habitat is present.

Nasturtium gambelii Gambel's water
cress
FE/ST/1B.1/None Marshes and swamps (brackish,
freshwater)/perennial rhizomatous herb/Apr–
Oct/15–1085
Not expected to occur. No
suitable habitat is present.

Navarretia prostrata prostrate vernal
pool navarretia
None/None/1B.2/None Coastal scrub, Meadows and seeps, Valley and foothill grassland (alkaline), Vernal pools;
Mesic/annual herb/Apr–July/10–3970
Not expected to occur. No
suitable habitat is present.

Nemacaulis denudata
var. denudata
coast woollyheadsNone/None/1B.2/None Coastal dunes/annual herb/Apr–Sep/0–330 Not expected to occur. No suitable habitat is present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-6 Scientific Name Common Name
Status
(Federal/State/Other)
Habitats/ Life Form/ Blooming Period/
Elevation Range (feet) Potential to Occur in BSA
Ophioglossum
californicum
California
adder's-tongue
None/None/4.2/None Chaparral, Valley and foothill grassland, Vernal pools (margins); Mesic/perennial
rhizomatous herb/Jan–June(Dec)/195–1725
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Orcuttia californica California Orcutt
grass
FE/SE/1B.1/None Vernal pools/annual herb/Apr–Aug/50–2165 Not expected to occur. No suitable habitat is present.

Pentachaeta aurea ssp.
allenii
Allen's
pentachaeta
None/None/1B.1/None Coastal scrub (openings), Valley and foothill grassland/annual herb/Mar–June/245–1705
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Phacelia stellaris Brand's star
phacelia
None/None/1B.1/None Coastal dunes, Coastal scrub/annual herb/Mar–June/5–1310
Not expected to occur. No
suitable habitat is present.

Quercus dumosa Nuttall's scrub
oak
None/None/1B.1/BLMS, USFS-SChaparral, Closed-cone coniferous forest, Coastal scrub; Clay, Loam, Sandy/perennial
evergreen shrub/Feb–Apr(May–Aug)/50–1310
Not expected to occur. No
suitable habitat is present.

Sagittaria sanfordii Sanford's
arrowhead
None/None/1B.2/BLM-S Marshes and swamps (shallow
freshwater)/perennial rhizomatous herb
(emergent)/May–Oct(Nov)/0–2135
Not expected to occur. No
suitable habitat is present.

Selaginella cinerascens ashy spike-moss None/None/4.1/None Chaparral, Coastal scrub/perennial rhizomatous herb/65–2100
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Senecio aphanactis chaparral
ragwort
None/None/2B.2/None Chaparral, Cismontane woodland, Coastal scrub; Alkaline (sometimes)/annual herb/Jan–
Apr(May)/50–2625
Not expected to occur. No
suitable habitat is present.

Sidalcea neomexicana salt spring
checkerbloom
None/None/2B.2/USFS-S Chaparral, Coastal scrub, Lower montane coniferous forest, Mojavean desert scrub,
Playas; Alkaline, Mesic/perennial herb/Mar–
June/50–5020
Not expected to occur. No
suitable habitat is present.

Suaeda esteroa estuary seablite None/None/1B.2/None Marshes and swamps (coastal salt)/perennial herb/(Jan–May)July–Oct/0–15
Not expected to occur. No
suitable habitat is present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-7 Scientific Name Common Name
Status
(Federal/State/Other)
Habitats/ Life Form/ Blooming Period/
Elevation Range (feet) Potential to Occur in BSA
Suaeda taxifolia woolly seablite None/None/4.2/None Coastal bluff scrub, Coastal dunes, Marshes and swamps (coastal margins)/perennial
evergreen shrub/Jan–Dec/0–165
Not expected to occur. No
suitable habitat is present.

Symphyotrichum
defoliatum
San Bernardino
aster
None/None/1B.2/USFS-S Cismontane woodland, Coastal scrub, Lower montane coniferous forest, Marshes and
swamps, Meadows and seeps, Valley and
foothill grassland (vernally mesic);
Streambanks/perennial rhizomatous
herb/July–Nov/5–6695
Not expected to occur. No
suitable habitat is present.

Verbesina dissita big-leaved
crownbeard
FT/ST/1B.1/None Chaparral (maritime), Coastal scrub/perennial herb/(Mar)Apr–July/150–675
Not expected to occur. The
study area is outside of the
species’ known elevation range
and there is no suitable habitat
present.

Status Legend:

Federal
FE: Federally listed as endangered
FT: Federally listed as threatened
FPE: Federally proposed for listing as endangered
FPT: Federally proposed for listing as threatened
FC: Federal candidate species (former Category 1 candidates) None: No federal listing
FDL: Delisted
State
SE: State listed as endangered
ST: State listed as threatened
SR: State rare
SCE: State candidate for listing as endangered
SCT: State candidate for listing as threatened
None: No state listing
SDL: State delisting
California Rare Plant Rank (CRPR)
CRPR 1A: Plants presumed extirpated in California and either rare or extinct elsewhere
CRPR 1B: Plants rare, threatened, or endangered in California and elsewhere CRPR 2A: Plants presumed extirpated in California but common elsewhere CRPR 2B: Plants rare, threatened, or endangered in California but more common elsewhere
CRPR 3: Review List: Plants about which more information is needed CRPR 4: Watch List: Plants of limited distribution
.1 Seriously threatened in California (over 80% of occurrences threatened / high degree and immediacy of threat)
.2 Moderately threatened in California (20–80% occurrences threatened / moderate degree and immediacy of threat)
.3 Not very threatened in California (<20% of occurrences threatened / low degree and immediacy of threat or no current threats known)

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-8

SPECIAL-STATUS ANIMAL SPECIES WITH POTENTIAL TO OCCUR IN STUDY AREA Scientific Name Common Name
Status
(Federal/State/Other) Habitats Potential to Occur in BSA Amphibians
Spea hammondii western
spadefoot
FPT / None / BLM-S,

CDFW-SSC
Cismontane woodland | Coastal scrub | Valley & foothill grassland | Vernal pool | Wetland; Occurs primarily in grassland habitats, but can be found in valley-foothill hardwood woodlands.

Not expected to occur. No
suitable habitat is present.

Birds
Agelaius tricolor tricolored
blackbird
None / ST / BLM-S,

CDFW-SSC
Freshwater marsh | Marsh & swamp | Swamp | Wetland; Highly colonial species, most numerous in Central Valley and vicinity.

Largely endemic to California.

Not expected to occur. No
suitable habitat is present.

Ammodramus
savannarum
grasshopper
sparrow
None / None / CDFWSSCValley & foothill grassland; Dense grasslands on rolling hills, lowland plains, in valleys and on hillsides on lower mountain slopes.

Not expected to occur. No
suitable habitat is present.

Athene
cunicularia
burrowing owl None / SCE / BLM-S,

Moderate potential to occur.

Multiple suitable burrows were
observed on site. There is a
recent extant occurrence within
the industrial property roughly

0.25 miles south of the project
site.

Buteo swainsoni Swainson's
hawk
None / ST / BLM-S Great Basin grassland | Riparian forest | Riparian woodland | Valley & foothill grassland; Breeds in grasslands with scattered trees, juniper-sage flats, riparian areas, savannahs, and agricultural or ranch lands with groves or lines of trees.

Not expected to occur. No
suitable habitat is present.

Campylorhynchus
brunneicapillus
sandiegensis
coastal cactus
wren
None / None / CDFWSSC, USFS-SCoastal scrub; Southern California coastal sage scrub. Not expected to occur. No suitable habitat is present.

Charadrius
alexandrinus
nivosus
western snowy
plover
FT / None / CDFW-SSC Great Basin standing waters | Sand shore | Wetland; Sandy beaches, salt pond levees and shores of large alkali lakes.

Not expected to occur. No
suitable habitat is present.

Coccyzus
americanus
occidentalis
western
yellow-billed
cuckoo
FT / SE / BLM-S, USFSSRiparian forest; Riparian forest nester, along the broad, lower flood-bottoms of larger river systems.

Not expected to occur. No
suitable habitat is present.

Coturnicops
noveboracensis
yellow rail None / None / CDFWSSC, USFS-SFreshwater marsh | Meadow & seep; Summer resident in eastern Sierra Nevada in Mono County.

Not expected to occur. No
suitable habitat is present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-9 Scientific Name Common Name
Status
(Federal/State/Other) Habitats Potential to Occur in BSA Elanus leucurus white-tailed
kite
None / None / BLM-S,

CDFW-FP
Cismontane woodland | Marsh & swamp | Riparian woodland | Valley & foothill grassland | Wetland; Rolling foothills and valley margins with scattered oaks and river bottomlands or marshes next to deciduous woodland.

Not expected to occur. No
suitable habitat is present.

Icteria virens yellowbreasted chatNone / None / CDFWSSCRiparian forest | Riparian scrub | Riparian woodland; Summer resident; inhabits riparian thickets of willow and other brushy tangles near watercourses.

Not expected to occur. No
suitable habitat is present.

Laterallus
jamaicensis
coturniculus
California black
rail
None / ST / BLM-S,

CDFW-FP
Brackish marsh | Freshwater marsh | Marsh & swamp | Salt marsh | Wetland; Inhabits freshwater marshes, wet meadows and shallow margins of saltwater marshes bordering larger bays.

Not expected to occur. No
suitable habitat is present.

Passerculus
sandwichensis
beldingi
Belding's
savannah
sparrow
None / SE / None Marsh & swamp | Wetland; Inhabits coastal salt marshes, from Santa Barbara south through San Diego County.

Not expected to occur. No
suitable habitat is present.

Polioptila
californica
californica
coastal
California
gnatcatcher
FT / None / CDFW-SSC Coastal bluff scrub | Coastal scrub; Obligate, permanent resident of coastal sage scrub below 2500 ft in Southern California.

Not expected to occur. No
suitable habitat is present.

Rallus obsoletus
levipes
light-footed
Ridgway's rail
FE / SE / CDFW-FP Marsh & swamp | Salt marsh | Wetland; Found in salt marshes traversed by tidal sloughs, where cordgrass and pickleweed are the dominant vegetation.

Not expected to occur. No
suitable habitat is present.

Riparia riparia bank swallow None / ST / BLM-S Riparian scrub | Riparian woodland; Colonial nester; nests primarily in riparian and other lowland habitats west of the desert.

Not expected to occur. No
suitable habitat is present.

Rynchops niger black skimmer None / None / CDFWSSCAlkali playa | Sand shore; Nests on gravel bars, low islets, and sandy beaches, in unvegetated sites. Nesting colonies usually less than 200 pairs.

Not expected to occur. No
suitable habitat is present.

Setophaga
petechia
yellow warbler None / None / CDFWSSCRiparian forest | Riparian scrub | Riparian woodland; Riparian plant associations in close proximity to water. Also nests in montane shrubbery in open conifer forests in Cascades and Sierra Nevada.

Not expected to occur. No
suitable habitat is present.

Sternula
antillarum
browni
California least
tern
FE / SE / CDFW-FP Alkali playa | Wetland; Nests along the coast from San Francisco Bay south to northern Baja California.

Not expected to occur. No
suitable habitat is present.

Vireo bellii
pusillus
least Bell's
vireo
FE / SE / None Riparian forest | Riparian scrub | Riparian woodland; Summer resident of Southern California in low riparian in vicinity of water or in dry river bottoms; below 2000 ft.

Not expected to occur. No
suitable habitat is present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-10 Scientific Name Common Name
Status
(Federal/State/Other) Habitats Potential to Occur in BSA Fishes
Catostomus
santaanae
Santa Ana
sucker
FT / None / CDFW-SSC Aquatic | South coast flowing waters; Endemic to Los Angeles Basin south coastal streams.

Not expected to occur. No
suitable habitat is present.

Eucyclogobius
newberryi
tidewater goby FE / None / CDFW-SSC Aquatic | Klamath/North coast flowing waters | Sacramento/San Joaquin flowing waters | South coast flowing waters; Brackish water habitats along the California coast from Agua Hedionda Lagoon, San Diego County to the mouth of the Smith River.

Not expected to occur. No
suitable habitat is present.

Oncorhynchus
mykiss irideus
pop. 10
steelhead -
southern
California DPS
FE / SCE / None Aquatic | South coast flowing waters; Federal listing refers to populations from Santa Maria River south to southern extent of range (San Mateo Creek in San Diego County).

Not expected to occur. No
suitable habitat is present.

Invertebrates
Bombus crotchii Crotch's
bumble bee
None / SCE / None Open grassland and scrub communities supporting suitable floral resources. Coastal California east to the Sierra-Cascade crest and south into Mexico.

Not expected to occur. No
suitable habitat is present.

Habitat is fragmented from any
recent occurrence records and no
food plant genera occur on site.

Branchinecta
sandiegonensis
San Diego fairy
shrimp
FE / None / None Chaparral | Coastal scrub | Vernal pool | Wetland; Endemic to San Diego and Orange County mesas.

Not expected to occur. No
suitable habitat is present.

Danaus plexippus
plexippus
monarch -
California
overwintering
population
FPT / None / USFS-S Closed-cone coniferous forest; Winter roost sites extend along the coast from northern Mendocino to Baja California, Mexico.

Moderate potential to occur.

Monarch may be observed flying
through the BSA or utilizing trees
to roost temporarily but is not
expected to breed on-site due to
the lack of suitable host plants.

Furthermore, monarch is not
expected to overwinter within
the BSA due to the lack of
suitable habitat.

Euphydryas
editha quino
quino
checkerspot
butterfly
FE / None / None Chaparral | Coastal scrub; Sunny openings within chaparral and coastal sage shrublands in parts of Riverside and San Diego counties.

Not expected to occur. No
suitable habitat is present.

Streptocephalus
woottoni
Riverside fairy
shrimp
FE / None / None Coastal scrub | Valley & foothill grassland | Vernal pool | Wetland; Endemic to Western Riverside, Orange, and San Diego counties in areas of tectonic swales/earth slump basins in grassland and coastal sage scrub.

Not expected to occur. No
suitable habitat is present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-11 Scientific Name Common Name
Status
(Federal/State/Other) Habitats Potential to Occur in BSA Mammals
Choeronycteris
mexicana
Mexican longtongued batNone / None / CDFWSSCPinon & juniper woodlands | Riparian scrub | Sonoran thorn woodland; Occasionally found in San Diego County, which is on the periphery of their range.

Not expected to occur. No recent
extant occurrence records are
present near the BSA. Marginal
suitable habitat is present within
the BSA.

Eumops perotis
californicus
western
mastiff bat
None / None / BLM-S,

CDFW-SSC
Chaparral | Cismontane woodland | Coastal scrub | Valley & foothill grassland; Many open, semi-arid to arid habitats, including conifer and deciduous woodlands, coastal scrub, grasslands, chaparral, etc.

Not expected to occur. No recent
extant occurrence records are
present near the BSA. Marginal
suitable habitat is present within
the BSA.

Lasiurus
xanthinus
western yellow
bat
None / None / CDFWSSCDesert wash; Found in valley foothill riparian, desert riparian, desert wash, and palm oasis habitats.

Not expected to occur. No recent
extant occurrence records are
present near the BSA. Marginal
suitable habitat is present within
the BSA.

Microtus
californicus
stephensi
south coast
marsh vole
None / None / CDFWSSCTidal marshes; Tidal marshes in Los Angeles, Orange and southern Ventura counties.

Not expected to occur. No
suitable habitat is present.

Myotis
yumanensis
Yuma myotis None / None / BLM-S Lower montane coniferous forest | Riparian forest | Riparian woodland | Upper montane coniferous forest; Optimal habitats are open forests and woodlands with sources of water over which to feed.

Not expected to occur. No recent
extant occurrence records are
present near the BSA. Marginal
suitable habitat is present within
the BSA.

Nyctinomops
macrotis
big free-tailed
bat
None / None / CDFWSSCRocky areas; roosts in caves, holes in trees, buildings, and crevices on cliffs and rocky outcrops; forages over water ; Low-lying arid areas in Southern California.

Not expected to occur. No recent
extant occurrence records are
present near the BSA. Marginal
suitable habitat is present within
the BSA.

Perognathus
longimembris
pacificus
Pacific pocket
mouse
FE / None / CDFW-SSC Coastal scrub; Inhabits the narrow coastal plains from the Mexican border north to El Segundo, Los Angeles County.

Not expected to occur. No
suitable habitat is present.

Sorex ornatus
salicornicus
southern
California
saltmarsh
shrew
None / None / CDFWSSCSalt marsh; Coastal marshes in Los Angeles, Orange and Ventura counties.

Not expected to occur. No
suitable habitat is present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-12 Scientific Name Common Name
Status
(Federal/State/Other) Habitats Potential to Occur in BSA Taxidea taxus American
badger
None / None / CDFWSSCAlkali marsh | Alkali playa | Alpine | Alpine dwarf scrub | Bog & fen | Brackish marsh | Broadleaved upland forest | Chaparral | Chenopod scrub | Cismontane woodland | Closed-cone
coniferous forest | Coastal bluff scrub | Coastal dunes | Coastal prairie; Most abundant in drier open stages of most shrub, forest, and herbaceous habitats, with friable soils.

Not expected to occur. No
suitable habitat is present.

Reptiles
Actinemys pallida southwestern
pond turtle
FPT / None / BLM-S,

CDFW-SSC, USFS-S
; Freshwater environments such as ponds, lakes, reservoirs, and slow-moving streams with abundant aquatic vegetation, typically in low to mid-elevation areas.

Not expected to occur. No
suitable habitat is present.

Anniella stebbinsi Southern
California
legless lizard
None / None / CDFWSSC, USFS-SBroadleaved upland forest | Chaparral | Coastal dunes | Coastal scrub; Generally south of the Transverse Range, extending to northwestern Baja California. Occurs in sandy or loose loamy soils under sparse vegetation. Disjunct populations in the Tehachapi and Piute Mountains in Kern County.

Not expected to occur. No
suitable habitat is present.

Aspidoscelis
hyperythra
orangethroated
whiptail
None / None / USFS-S Chaparral | Cismontane woodland | Coastal scrub; Inhabits lowelevation coastal scrub, chaparral, and valley-foothill hardwood habitats.

Not expected to occur. No
suitable habitat is present.

Chelonia mydas green turtle FT / None / None Marine bay; Marine. Not expected to occur. No suitable habitat is present.

Crotalus ruber red-diamond
rattlesnake
None / None / CDFWSSC, USFS-SChaparral | Mojavean desert scrub | Sonoran desert scrub; Chaparral, woodland, grassland, and desert areas from coastal San Diego County to the eastern slopes of the mountains.

Not expected to occur. No
suitable habitat is present.

Phrynosoma
blainvillii
coast horned
lizard
None / None / BLM-S,

Not expected to occur. No
suitable habitat is present.

ATTACHMENT D

SPECIAL-STATUS SPECIES POTENTIAL TO OCCUR
Biological Resources Assessment September 2025
Edison Park Reconfiguration and Improvements Project Page D-13 Status Legend:

••••

Left: 1968 aerial view of the park property showing its use as a previous landfill (UCSB 1968). Right: 1972 aerial of the park with a red arrow pointing to the location of the community center and firehouse buildings now in place (UCSB 1972). 1972 aerial of the park with a red arrow pointing to the location of the community center and firehouse buildings now in place (UCSB 1972).
1974 aerial view of the fully developed park property (UCSB 1974). • monumental massing
• imposing angular or blockish forms
• exposed concrete building finishes
• repetitive structural elements and fenestration patterns • recessed openings
• lack of traditional ornament
• monumental appearance: often elevated on a plinth or set in a landscaped plaza • bold geometric volumes and sculptural building forms
• display of mechanical and structural elements
• flat or shed roof, sometimes with prominent eaves or sculptural projections • flat wall surfaces rendered in a single material (concrete, metal, glass, and wood are common) • doors and windows that are incorporated into exterior cladding and surface treatments • minimal surface ornament
aerial view of Edison Park (Google Maps 2025).

°
Source: Esri, ArcGIS Online, National Geographic World Map: Huntington Beach, California Regional Vicinity
Figure 1

EDISON PARK RECONFIGURATION

AND IMPROVEMENTS PROJECT
7/30/2025 PN: 208581 \\Santca1hub\irvica1fs1\HROOT\pdata\208581\Admin\Reports\Environmental\Tech Studies\Cultural\08_GIS\APRX\208581 Edison Park Reconfiguration and Improvements Project.aprx Legend
Project Location
0 2.5 5
Miles
Orange
County
Map Detail
&
°
Source: Esri, ArcGIS Online, Newport Beach USGS 7.5-Minute topographic quadrangle maps: Huntington Beach, California Project Vicinity
Figure 2

EDISON PARK RECONFIGURATION

NEWPORT BEACH QUAD
0 500 1,000 2,000
US Feet

NEWPORT BEACH QUAD
Newland St
Breton Ln
Sable Dr
Stilwell Dr
Miramar Ln
Dorsett Dr
Shepherd Ln
Seaforth Ln
Kroll Ln
P
oston Ln
Saint Augustine Dr
Sand D
ollar Ln
Satterfield Dr
Shaw Ln
White H
orse Ln
Yarm
outh Ln
Barbados Cir
Greenboro Ln
Antigua Ln
Edison Park
William E Kettler
Elementary
School
Hamilton Ave
Newland St
Edison Dr
Santiago Dr
Magnolia
St
Magnolia
Edison Hig
School
P
olynesian Ln
Regatta Dr
Adelia Cir
Niguel Cir
Bobbie Cir
°
Source: Esri, ArcGIS Online, 2025 Nearmap Imagery: Huntington Beach, California Project Area
Figure 3

EDISON PARK RECONFIGURATION

ReportNum Xrefs Authors CitYear CitTitle CitPublisher CitPages ReportType Resources ResourceCount PLSS OR-00001 Ahlering, Michael L. 1973 Report of a Scientific Resources Survey and Inventory: Conducted for the City of Huntington Beach, California Archaeological Research, Inc. 73 Archaeological, Other research 30-000078, 30-000082, 30-000084, 30-000085, 30-000086, 30-000087, 30-000088, 30-000142, 30-000145, 30-000149, 30-000183, 30-000185, 30-000276, 30-000288, 30-000289, 30-000290, 30-000291, 30-000292, 30-000293, 30-000302, 30-000346, 30-000356, 30-000358, 30-000359, 30-000363, 30-000365 26 OR-02033 See also OR-01626; See also OR-02179 Mason, Roger D. 1987 Research Design for Evaluation of Coastal Archaeological Sites in Northern Orange County, California Scientific Resource Surveys, Inc. 89 Other research 30-000078, 30-000082, 30-000083, 30-000084, 30-000085, 30-000086, 30-000088, 30-000143, 30-000145, 30-000183, 30-000256, 30-000257, 30-000258, 30-000259, 30-000260, 30-000261, 30-000262, 30-000263, 30-000264, 30-000288, 30-000290, 30-000291, 30-000292, 30-000294, 30-000302, 30-000322, 30-000365, 30-000366, 30-000368, 30-000555 30 OR-02134 Lapin, Philippe 2000 Cultural Resource Assessment for Pacific Bell Wireless Facility Cm 294-12, County of Orange, California LSA Associates, Inc. 8 Archaeological, Excavation 0OR-02229 Duke, Curt 2000 Cultural Resource Assessment for the At&t Wireless Services Facility Number C871.2, County of Orange, California LSA Associates, Inc. 13 Archaeological, Excavation, Field study 30-001531 1OR-02456 Hoover, Anna M. 2000 Cultural Resources Literature and Records Review for the Southeast Coastal Industrial Area Redevlopment Project, Huntington Beach, California RMW Paleo Associates, Inc. 12 Literature search 0 OR-03450 Bonner, Wayne H. 2007
Cultural Resource Records Search and Site Visit Results for Royal Street Communications, LLC Candidate La2739a (Magnolia & Hamilton), West of Magnolia Street on Hamilton Avenue, Huntington Beach, Orange County, California Michael Brandman Associates 12 Archaeological, Field study 0 OR-03582 Losee, Carolyn 2009 Cultural Resources Investigation for T-Mobile LA33422A "Landmark Liquor" 8491 Atlanta Avenue, Huntington Beach, Orange County, California 92646 Archaeological Resources Technology 5 Literature search 0OR-03614 Mason, Roger D. 2003 Cultural Resources Records Search and Field Survey Report for a Verizon Telecommunications Facility: Magnolia in the City of Huntington Beach, Orange County, California Chambers Group, Inc. 20 Archaeological, Field study 30-001531 1 OR-03842 Brown, Joan and Maxon, Patrick 2010 Phase 1 Cultural Resources Assessment for the Poseidon Seawater Desalination Project, Huntington Beach, Orange County, California BonTerra Consulting 38 Archaeological, Field study, Other research 30-001531, 30-176946 2OR-04313 Unknown 2013 Historic and Cultural Resources Element - Huntington Beach City of Huntington Beach 17 Architectural/Historical 0OR-04594 Gilbert, Rebecca and Lauren DeOliveira 2017 ARCHAEOLOGICAL SURVEY REPORT FOR THE HUNTINGTON BEACHWAVE 66 KV RELOCATION PROJECT, ORANGE COUNTY, CALIFORNIA Environmental Intelligence 34 Archaeological, Field study 0OR-04595 Belcourt, Tria M., Jennifer Kelly, and Sonia Sifuentes 2017 CULTURAL AND PALEONTOLOGICAL ASSESSMENT: MAGNOLIA TANK FARM PROJECT, CITY OF HUNTINGTON BEACH, ORANGE COUNTY, CALIFORNIA Material Culture Consulting 40 Archaeological, Field study 0

DPR 523A (9/2013) *Required information

Page 1 of 17 ends

P1. Other Identifier: Edison Community Park
*P2. Location: ☒ Unrestricted
*a. County Orange and
*b. USGS 7.5' Quad Newport Beach, Calif. Date 1965, rev. 1982 T 06 S; R 11W; S.B.B.M c. Address 21377 Magnolia St City Huntington Beach Zip 92646 d. UTM: Zone N/A
e. Other Locational Data: APN 148-012-04, -06; -12, and 148-071-29 *P3a. Description:

Edison Park is a 35.5-acre community park that today includes the Magnolia Fire Station, the Edison Community Center, tennis courts, basketball courts, handball courts, pickleball courts, baseball fields, batting cages, children’s playground equipment, a skate park, paved walkways with overhead lighting, a small outdoor concrete stage area, open grass areas, landscaping, and paved parking lots (Photograph 1 through Photograph 19) (City of Huntington Beach 2025a; UCSB 1971, 1972, 1974). Additionally, there are three sets of Edison transmission towers evenly spaced along the Hamilton Avenue border of the park. The Edison Park site was developed as a park after the site’s land transfer from Orange County to the City of Huntington Beach. It was officially dedicated on April 8, 1974, and named after the adjacent school, Edison High School (City of Huntington Beach 2009, 2025a, n.d.; Google Maps 2025). At the start of construction in 1972, the first features to be built were the community center building, the fire station, and preparation of open areas (UCSB 1972). By 1974, the tennis and handball courts, playground areas, and paved pathways were in place (UCSB 1974).

The baseball field, skate park, and pickleball courts were added in later years. The park is landscaped with extensive lawns and a variety of mature trees along the north, south, and west boundaries of the park, while paved parking lots are located along the northeast and east boundaries of the park.

The park was originally used as a sand and gravel pit in the 1950s and later used as the Cannery Street Refuse Disposal Station (landfill) between 1957 and 1969. (See Continuation Sheets)
*P3b. Resource Attributes: HP31. Urban Open Space
*P4. Resources Present: ☒ Building ☒ Structure
P5b. Description of Photo:

Photograph 1: View of the Edison
Community Center entrance in
Edison Park (view southwest,
August 5, 2025).

P6. Date Constructed/Age
and Source:
☒ Historic
1972 (UCSB 1971, 1972)
*P7. Owner and Address:

City of Huntington Beach
Huntington Beach, CA 92646
*P8. Recorded by:

Marcel Young
Michael Baker International
3760 Kilroy Airport Way, Suite
270
Long Beach, CA 90806
*P9. Date Recorded:

August 5, 2025.
*P10. Survey Type: Intensive
*P11. Report Citation:

Kohler, Paige, Susan Wood, and Rachel Garcia. 2025. “Cultural Resources Assessment for the Edison Park Reconfiguration and Improvement Project, City of Huntington Beach, Orange County, California.” Santa Ana, CA: Michael Baker International. *Attachments: ☒Sketch Map ☒Continuation Sheet ☒Building, Structure, and Object Record State of California - The Resources Agency Primary #
DEPARTMENT OF PARKS AND RECREATION HRI #
PRIMARY RECORD Trinomial
NRHP Status Code
Other Listings
Review Code Reviewer Date
P5a. Photograph or Drawing (Photograph required for buildings, structures, and objects.) DPR 523B (9/2013) *Required information

Page 2 of 17 ends

*NRHP Status Code 6Z
*Resource Name or # Edison Park
B1. Historic Name: Edison Park
B2. Common Name: Edison Park, Edison Community Park
B3. Original Use: Landfill site
B4. Present Use: Park
*B5. Architectural Style: Park, n/a; Edison Community Building: Brutalist; Magnolia Fire Station: Late Modern *B6. Construction History:

Edison Park was originally developed starting in 1972 and included a community center building, fire station, and open areas (City of Huntington Beach 2009, 2025b). Between 1972 and 1974, public recreational amenities were added, such as tennis, basketball, and handball courts, playground equipment, and paved walkways with lighting, as well as paved parking lots and landscaping (UCSB 1972, 1974; Google Earth 2025). Over time, other amenities were added, including baseball field, skate park, concrete stage area, and pickleball courts (NETR 2025: 1987, 1997, 2005, 2016, and 2022).
*B7. Moved? ☒No Date: N/A Original Location: N/A
*B8. Related Features: N/A
B9a. Architect: Park: Richard Bigler and Associates; Edison Community Center: unknown; Magnolia Fire Station: unknown b. Builder::

Unknown for park, community center, and fire station.
*B10. Significance: Theme Community development; architecture Area: Huntington Beach Period of Significance N/A Property Type Park Applicable Criteria N/A Regional History: Following California’s statehood in 1850, many Mexican-held land grants in Orange County were sold to Americans, such as Abel Stearns, James Irvine, and Llewellyn and Jotham Bixby. During the mid-nineteenth century, the Stearns Rancho Company owned the land that comprises the modern city of Huntington Beach. A series of droughts in the late 1860s forced the company to divide and sell its holdings to land speculators and farmers settling in the area. In 1903, a group of Los Angeles-based businessmen purchased 40 acres in what is now downtown Huntington Beach and formed the Huntington Beach Company with plans to develop the acreage into a waterfront town. With its sights on expansion, the company facilitated the construction of an electric railway from Los Angeles to Huntington Beach in 1904. As the beach community steadily grew, a commercial core materialized, and residential neighborhoods emerged. Huntington Beach was officially incorporated in 1909 (Orange County Historical Society, n.d.; Chattel Architecture and Planning & Preservation, Inc. 2006; Galvin Preservation Associates, Inc. 2014). (see Continuation Sheets).

B11. Additional Resource Attributes: N/A
*B12. References: See continuation sheets.

B13. Remarks: N/A
*B14. Evaluator:

Susan Wood, Senior Architectural Historian
Michael Baker International
801 S. Grand Avenue, Suite 250
Los Angeles, CA 90017
*Date of Evaluation: August 2025
State of California - The Resources Agency Primary #
DEPARTMENT OF PARKS AND RECREATION HRI#

BUILDING, STRUCTURE, AND OBJECT RECORD
(This space reserved for official comments.)

Page 3 of 12 ends

State of California - The Resources Agency Primary #
DEPARTMENT OF PARKS AND RECREATION HRI#
SKETCH MAP Trinomial

Page 4 of 19 ends

The centerpiece of the park is the Edison Community Center, which is accessed off Magnolia Avenue. The building was constructed in 1972 and dedicated in October 1973. It is a vernacular Late Modern style building with modest Brutalist elements. Character-defining features include monumental appearance, angular and blockish forms, exposed concrete building finishes, minimal surface ornament, recessed opening, flat roof with prominent eaves, and doors and windows incorporated into exterior cladding/surface treatments (Photograph 1 through Photograph 6).

The Huntington Beach Magnolia Fire Station #4 was also built within the grounds of Edison Park. Like the community center, it appears the fire station building was constructed in 1972 and opened for use in 1973. It is a vernacular Late Modern style building. Characterdefining features include geometric volumes, sculpted forms such as the rounded walls, flat roof, flat wall surface in one material (brick), and minimal surface ornament (Photograph 7 through Photograph 9).

Photograph 2. View of the entrance to the Edison Community Center (view southwest, August 5, 2025).

Page 5 of 19 ends

*Recorded by: Marcel Young, Michael Baker International *Date: August 5, 2025 ☒ Continuation
DPR 523L (9/2013)
State of California - The Resources Agency Primary#
DEPARTMENT OF PARKS AND RECREATION HRI #
CONTINUATION SHEET Trinomial
Photograph 3. View of the community center courtyard (off south elevation) (view north, August 5, 2025).

Photograph 4. View of the south elevation of the community center building (view northwest, August 5, 2025).

Photograph 5. View of the rear (west) and north elevations of the community center building (view southeast, August 5, 2025).

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Photograph 6. View northwest of community center (view northwest, August 5, 2025).

Photograph 7. View of east elevation of Magnolia Fire Station #4 (view west, August 5, 2025).

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Photograph 8. View of south and east elevations of Magnolia Fire Station #4 (view northwest, August 5, 2025).

Photograph 9. View south and rear (west) elevations of Magnolia Fire Station #4 (view northeast, August 5, 2025).

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Photograph 10. View of Edison Park’s tennis courts (view southeast, August 5, 2025).

Photograph 11. View of Edison Park’s skateboard area (view southeast, August 5, 2025).

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Photograph 12. View of Edison Park’s concrete stage area (view south, August 5, 2025).

Photograph 13. View of Edison Park’s pickleball courts (view northeast, August 5, 2025).

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Photograph 15. View of Edison Park’s basketball courts (view southeast, August 5, 2025).

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Photograph 16. View of Edison Park’s lighted baseball fields (view east, August 5, 2025).

Photograph 17. View of Edison Park’s lighted concrete pathways and open landscaped grass areas (view south, August 5, 2025).

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Photograph 18. View of children’s playground area (view southwest, August 5, 2025).

Photograph 19. View of batting cages (view southeast, August 5, 2025).

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Tourism, industrial activities, and agriculture defined the regional economy during the early decades of the twentieth century.

Technological innovation led to the discovery of oil in Huntington Beach in 1920, transforming the region into an urban oil town. Oil fields quickly overtook many agricultural fields, and between 1920 and 1921, the population grew from 1,600 to 7,000 residents. Oil remained the dominant local economic driver through the 1950s. After World War II, Huntington Beach, like many cities in California, experienced a period of unprecedented growth as a result of national defense industries, expansion of regional transportation networks, and abundance of local recreation amenities. City annexations that started in the 1940s continued through the 1960s, and the municipality grew from 3.5 square miles to over 25 square miles. By 1970, Huntington Beach had become one of the fastest growing cities in the United States, and developers constructed housing tracts and commercial complexes on former agricultural land and oil fields. Historical aerial photographs from the 1960s and 1970s document this rapid outward expansion (NETR 2025:1963, 1972). This pattern of growth has continued since the 1970s, and today Huntington Beach is home to approximately 200,000 residents (Galvin Preservation Associates, Inc. 2014).

Site Development History
The land, divided up by parcels, is first depicted in historical maps from 1932. Not until 1965 does a USGS map (revised 1968) show the first road leading into what is now Edison Park (USGS 1965, Rev. 1968). Aerial imagery from 1938 until 1952 shows the property as undeveloped with no built environment; however, entering the 1960s, the aerial imagery depicts the park site serving as a landfill location until 1969 (Figure 1) (UCSB 1938, 1952, 1960, 1968). From 1970 until 1971, aerial photographs document the transformation of the property from being used as a landfill to being prepared for park construction. Within these two years, the clearing of waste and the level of terrain is noticeable (UCSB 1970, 1971). In 1972, the construction of the community center and fire station identified along the east border and southeast corner of the park site; by 1973, the fire station was opened (Figure 1) (City of Huntington Beach 2025b; UCSB 1972). A 1974 aerial image shows Edison Park as complete (Figure 2), and the park was officially dedicated on April 8, 1974 (UCSB 1974; City of Huntington Beach 2025a).

Figure 1. Left: 1968 aerial view of the park property showing its use as a previous landfill (UCSB 1968).

Right: 1972 aerial of the park with a red arrow pointing to the location of the community center and firehouse buildings now in

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Figure 2. 1974 aerial view of the fully developed park property (UCSB 1974).

Edison Park History
In the 1950s, the subject property was used by Southern California Edison (SCE) as a sand and gravel pit. Later, between 1957 and 1969, it was used as the Cannery Street Refuse Disposal Station (landfill) (City of Huntington Beach 2025a; The Register 1957).

Following the cessation of landfill activities and the site’s ownership transfer from Orange County to the City of Huntington Beach, Edison Park was developed starting in 1972 and officially dedicated on April 8, 1974. The park was named after the adjacent school, Edison High School. The park itself was designed by architect Richard Bigler as an open space park featuring an activity building and courts for basketball, handball, and tennis, as well as a playground and open grass areas. The portion of the park that was over the former landfill is approximately 27.5 acres and is located on the west side. Edison Park today is 39.69 acres, with 63.3 percent of it located over the former landfill site (City of Huntington Beach, n.d.).

Architect: Richard Bigler and Associates
Richard Anderson Bigler (1930-2014) was an architect who specialized in park design and was the owner of Richard Bigler Associates (Anaheim Bulletin 1972). Bigler was born in Provo, Utah, in 1930. In 1947, at seventeen years old, he served in the US Navy and then again in 1953. After serving in the Navy and then serving as a missionary, he studied landscape architecture at the University of California, Berkeley (Fresno Bee 2014). In 1972 Richard Bigler established his company, Richard Bigler Associates, Inc., which focused on golf courses and public parks (CA Secretary of State 2025; Find a Grave 2025).

Richard Bigler was a prolific community park designer in Southern California. He was the landscape architect behind Eisenhower Park, which transformed a former city dump into Orange’s first major municipal park (Los Angeles Times 1969). In Huntington Beach, he was responsible for the designs of several community parks, including Schroeder Park, Greer Park, Irby Park, Wardlow Park, Edison Park, and Murdy Park (City of Huntington Beach 1974:13, 2025c; Register 1967, Los Angeles Times 1967). He also designed five parks in Fountain Valley (Cordata, Monroe, Stonecress, and Harper Parks), designed four water retention basins in Montclair, and served as the landscape architect for projects such as Freeway Park in Culver City, Polliwog Park in Manhattan Beach, Granada Hills Knollwood Park in Los Angeles, and Kit Carson Park in Escondido (Los Angeles Times 1971, 1973, 1974, 1979; Progress Bulletin 1971; Daily Breeze 1973; Press-Telegram 1970).

In addition to his recreational park work, he became locally known for his work on golf courses, including the DeBell Gold course in Burbank and the Anaheim Hills Golf Course (DeBell Golf Club, n.d.; Anaheim Bulletin 1973). Bigler also prepared the 20-year master

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plan for parks and recreation in Cerritos, covering the city’s 8.5 square miles, which called for an 18-hole golf course, horse riding trails, and equestrian facilities (Press Telegram 1968). Richard Bigler died in 2014 at 84 years old, leaving behind his wife, Claudette Bigler, and their eight children.

Huntington Beach Fire Department History
The history of fire stations in Huntington Beach mirrors the city's own growth and transformation. Fire protection in Huntington Beach began in the early twentieth century, soon after the city's founding, when community volunteers formed the first firefighting brigade. With the city’s expansion fueled by the oil boom and residential development, the need for a professional and well-equipped fire service became clear (City of Huntington Beach 2025d).

The first official fire station was established in downtown Huntington Beach in the 1920s, housing both equipment and firefighters. As neighborhoods spread further from the city center, additional stations were built to improve response times and public safety. Over the decades, these stations have been relocated, rebuilt, and modernized to keep pace with technological advances and population growth (City of Huntington Beach 2025d).

The years 1967 to 1990 marked a pivotal era in Huntington Beach fire service history, guided by the steady leadership of Fire Chief Raymond C. Picard. Appointed in September 1967, Chief Picard presided over dramatic changes as the city’s population surged from 11,500 in 1960 to 181,500 by 1990. Meeting the demands of this explosive growth, the city embarked on a significant expansion of its fire services and emergency capabilities. Under Chief Picard, two new fire stations were constructed, including the Magnolia Fire Station, which was opened in 1973 to better serve the growing community (City of Huntington Beach 2025d).

Architectural Style
Brutalism (1950s–1970s)
The term “Brutalism” directly references the French phrase béton brut, which translates to raw concrete. Brutalism first emerged during the late 1950s as an aesthetic preference for exposed concrete building materials and was formalized as a distinct architectural idiom by the likes of Le Corbusier and other European architects. By the mid-1960s, Brutalism gained popularity in Southern California and across the United States, particularly as a style used for civic and commercial buildings (City of San Diego 2007; McAlester 2013: 664). Characterdefining features of the style include:
• monumental massing
• imposing angular or blockish forms
• exposed concrete building finishes
• repetitive structural elements and fenestration patterns • recessed openings
• lack of traditional ornament
Late Modern (late 1960s–1970s)
Late Modern is a broad term that is used to describe a family of architectural styles that offered an alternative to orthodox Modernism in the late 1960s and 1970s without diverging from the core values of the Modern movement entirely.

By the 1960s, the Modern movement had dominated architecture in the United States for nearly two decades, and by this time orthodox Modernism was increasingly seen as generic, cheap, and effete (Jencks 1980: 6). Architects and designers began dabbling in new modes of architectural expression that offered alternatives to some of the most banal qualities of Modernism, which included taking the essential tenets of Modernism and reinterpreting them to respond to the context of the present day.

The term “Late Modern” was coined in 1977 by architectural historian and theorist Charles Jencks. Jencks remarked that “there are many ways to characterize Late Modern architecture, and most of them can be reduced to the single notion of exaggeration. Late Modernism takes Modern architecture to an extreme in order to overcome its monotony and the public’s boredom with it” (Jencks 1980: 6-7).

Various derivatives of the Late Modern movement emerged beginning in the 1960s, each of which had a unique architectural vocabulary and set of characteristics. Common derivatives of Late Modern architecture in Southern California included Brutalism, which celebrated the aesthetic merits of raw concrete; High-Tech/Structural Expressionism, in which structural and operating systems were emphasized with bold, dematerialized imagery; and Glass Skin, in which the glass curtain wall method of construction was expanded to cover the entire exterior of a building (City of Los Angeles 2020: 8-34).

Some Late Modern buildings exuded a rustic aesthetic with features like shed roofs, untreated wood siding, and earth-toned materials.

This aesthetic was influenced by the Sea Ranch, a beachfront community in Northern California that was developed in the 1960s by

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landscape architect Lawrence Halprin and architects Joseph Esherick, Charles Moore, Donald Lyndon, and William Turnbull.

Buildings at the Sea Ranch were designed to blend into the landscape of rocks, hedgerows, and redwood and cypress trees, and were Modern in their honest expression of structure and materials (Simonson 2020).

Late Modernism is different than, but often conflated with, Postmodernism. According to Jencks, Late Modern architecture is “‘singly-coded,’ tak[ing] the ideas and forms of the Modern movement to an extreme, exaggerating the structure and technological image of the building to provide amusement or aesthetic pleasure.” Postmodernism is “doubly-coded, one half Modern and one half something else (usually traditional building), in its attempt to communicate both with the public and a concerned minority, usually architects” (Jencks 1980: 6-7). Late Modernism was popular until approximately 1980.

Character-defining features of Late Modern architecture include:
• monumental appearance; often elevated on a plinth or set in a landscaped plaza • bold geometric volumes and sculptural building forms
• display of mechanical and structural elements
• flat or shed roof, sometimes with prominent eaves or sculptural projections • flat wall surfaces rendered in a single material (concrete, metal, glass, and wood are common) • doors and windows that are incorporated into exterior cladding and surface treatments • minimal surface ornament

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Evaluation
The following evaluates Edison Park and Magnolia Fire Station (as the latter is within the boundaries of the park) for their eligibility for the California Register of Historical Resources. These properties have not previously been evaluated.

Criterion 1 – Edison Park was developed between 1972 and 1974 to serve the southern areas of Huntington Beach. It was not developed as part of a master plan; was not one of the area’s first parks; does not have development features that influence park or landscape design; and did not contribute to recreational development of the city, county, state, or nation in a singularly important way. Therefore, the park does not meet the significance threshold for listing in the California Register under Criterion 1.

The Magnolia Fire Station was constructed within the boundaries of Edison Park in 1972, and like the park, opened in 1973 to serve the southern part of the expanding city. It was one of several built during this period to serve the expanding population of Huntington Beach. It was not one of the first fire stations, nor did its construction significantly contribute to fire and rescue services development of the city, county, state, or nation. Therefore, the fire station does not meet the significance threshold for listing in the California Register under Criterion 1.

Criterion 2 – Research failed to identify information regarding significant individuals associated with the park. Richard Bigler, the landscape architect who designed the park, will be addressed under Criterion 3. Therefore, the property does not appear associated with persons significant in our past and does not meet the significance threshold for listing in the California Register under Criterion 2.

Research failed to identify information regarding significant individuals associated with Magnolia Fire Station. Fire Chief Raymond C.

Picard presided over the department at the time of construction, but this individual fire station—constructed as one of many to serve the expanding City of Huntington Beach—is not significantly associated with the achievements of the fire chief. Therefore, the property does not appear associated with persons significant in our past and does not meet the significance threshold for listing in the California Register under Criterion 2.

Criterion 3 – The park was constructed in 1972, officially dedicated in 1973, and updated throughout the 2000s. The park follows the generic layout of the post-World War II-era community park with a modest community center building, restrooms, play areas, ball courts, baseball diamond, open grass area, and landscaped areas accessed via meandering pathways. While the park layout may follow the characteristics of a type, period, and method of construction, it is one of thousands of ubiquitous parks of this style throughout California and the nation. Further, research regarding the landscape architect Richard Bigler, although depicting a prolific community park designer, failed to suggest that he would be considered a master landscape architect. For these reasons, Edison Park does not embody the distinctive characteristics of a type, period, and method of construction, is not a work of a master, and does not display high artistic value. Therefore, Edison Park does not meet the significance threshold for listing in the California Register under Criterion 3 The Magnolia Fire Station building reflects a vernacular version of the ubiquitous Late Modern architectural style of the 1970s era commonly used for commercial and institutional buildings. This fire station building is a modest example of the style. Neither its design nor the materials used in its construction possess high artistic value. It does not constitute a rare or innovative building type. This building is not individually exceptional for its design or method of construction. Although neither the architect nor builder was identified during research, these buildings are unlikely to qualify as important works of any master. Therefore, Edison Park does not meet the significance threshold for listing in the California Register under Criterion 3.

Criterion 4 – The built environment of Edison Park is not likely to yield valuable information which will contribute to our understanding of human history because the property is not and never was the principal source of important information pertaining to subjects such as 1970s-era park development, nor fire station construction; therefore, neither the park nor the Magnolia Fire Station meet the significance threshold for listing in the California Register under Criterion 4.

Conclusion – Lacking significance, Edison Park and Magnolia Fire Station are ineligible for listing in the California Register under any criteria.

They are not historical resources as defined by CEQA Section 15064.5(a).

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Anaheim Bulletin, The. 1972. “County Parks Popular.” October 7, 1972. Accessed August 2025. www.newspapers.com.

CA Secretary of State. 2025. Online Business Services: Business Search. Accessed August 2025. https://bizfileonline.sos.ca.gov/search/business.

Chattel Architecture, Planning & Preservation, Inc. 2006. City of Orange Historic Context Statement. Prepared for P&D Consultants for the City of Orange General Plan Update.

City of Huntington Beach.1974. Huntington Central Park. Huntington Beach, The City of Huntington Beach.

City of Huntington Beach. 2009. Edison Park MND. Prepared for the City of Huntington Beach, Huntington Beach, California.

City of Huntington Beach. 2025a. “Edison Park.” Accessed August 2025. https://www.huntingtonbeachca.gov/business_detail_T9_R170.php City of Huntington Beach. 2025b. “Fire Station 4 - Magnolia.” Accessed August 2025. https://www.huntingtonbeachca.gov/business_detail_T9_R596.php City of Huntington Beach. 2025c. “Schroeder Park.” Accessed August 2025. https://www.huntingtonbeachca.gov/business_detail_T9_R282.php.

City of Huntington Beach. 2025d. “History.” Fire-About Us. Accessed August 2025. https://www.huntingtonbeachca.gov/departments/fire/about_us/history.php.

City of Huntington Beach. n.d. CEQA Narrative. Prepared for the City of Huntington Beach, Huntington Beach, California.

City of Los Angeles. 2020. SurveyLA Los Angeles Citywide Historic Context Statement: Context: Architecture and Engineering, 1850-1980; Subcontext: L.A. Modernism, 1919-1980; Theme: Late Modern, 1966-1990. Prepared for the City of Los Angeles Office of Historic Resources.

City of San Diego. 2007. “San Diego Modernism Historic Context Statement.” Submitted to the State of California, Office of Historic Preservation on October 17, 2007. https://www.sandiego.gov/sites/default/files/modernism_2007.pdf.

Daily Breeze, The. 1973. “Park Architect OK Expected.” March 5, 1973. Accessed August 2025. www.newspapers.com.

DeBell Golf Club. n.d. “Golf.” Accessed August 2025. https://debellgolf.com/golf-course/.

Find a Grave. 2025. General Search: “Richard Anderson Bigler.” Accessed August 2025. https://www.findagrave.com/memorial/132184004/richard-anderson-bigler.

Fresno Bee, The. 2014. “Richard Anderson Bigler.” July 3, 2014. Accessed August 2025. www.newspapers.com.

Galvin Preservation Associates, Inc. 2014. City of Huntington Beach Historic Context & Survey Report. Prepared for the City of Huntington Beach, Planning and Building Department.

Google Maps. 2025. Aerial imagery of the project site and vicinity. Electronic internet database. Accessed August 2025. https://www.google.com/maps/.

Jencks, Charles. 1980. Late-Modern Architecture and Other Essays. Rizzoli New York.

Los Angeles Times, The. 1967. “5-Mile-Long- Park Planned” January 1, 1967. Accessed August 2025. www.newspapers.com.

Los Angeles Times, The. 1969. “Park Once An Orange City Dump.” June 15, 1969. Accessed August 2025. www.newspapers.com.

Los Angeles Times, The. 1971. “Five Parks to Be Opened in Ceremony.” January 17, 1971. Accessed August 2025. www.newspapers.com.

Los Angeles Times, The. 1973. “Funds Budgeted for Culver City Parks.” January 14, 1973. Accessed August 2025. www.newspapers.com.

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Los Angeles Times, The. 1974. “Firm to Prepare Plans for New Park District.” July 11, 1974. Accessed August 2025. www.newspapers.com.

Los Angeles Times, The. 1979. “Plans For Center In Escondido.” April 20, 1979. Accessed August 2025. www.newspapers.com.

McAlester, Virginia Savage. 2013. A Field Guide to American Houses: The Definitive Guide to Identifying and Understanding America’s Domestic Architecture. Alfred A. Knopf.

NETR (Nationwide Environmental Title Research, LLC). 2025. Aerial photographs of APE and vicinity: 1963, 1972, 1987, 1997, 2005, 2016, and 2022. Accessed August 2025. www.historicaerials.com/viewer.

Orange County Historical Society. n.d. “A Brief History of Orange County.” Accessed August 2025. https://www.orangecountyhistory.org/wp/?page_id=38.

Press Telegram. 1970. “Asphalt Parking Lot Becomes Green Belt.” July 4, 1970. Accessed August 2025. www.newspapers.com.

Press Telegram. 1968. “Parks Master Plan OKd in Cerritos.” May 2, 1968. Accessed August 2025. www.newspapers.com.

Progress Bulletin. 1971. “Architect Hired to Develop Park.” September 23, 1971. Accessed August 2025. www.newspapers.com.

Register, The. 1967. “Battle Shapes Up For Parks Commissioners.” January 11, 1967. Accessed August 2025. www.newspapers.com.

Simonson, Hannah. 2020. “The ‘70s Turn 50: Divergences in American Architecture.” Docomomo US. Aug. 20. https://docomomous.org/news/the-70s-turn-50-divergences-in-american-architecture.

UCSB (University of California, Santa Barbara). 1938. Single-frame aerial photo by Laval Company Inc. Flight AXK_1938, Frame 29-

70. https://mil.library.ucsb.edu/ap_indexes/FrameFinder/.

UCSB (University of California, Santa Barbara). 1952. Single-frame aerial photo by Pacific Air Industries. Flight AXK_1953, Frame 6K56. https://mil.library.ucsb.edu/ap_indexes/FrameFinder/.

UCSB (University of California Santa Barbara). 1960. Single-frame aerial photo by Pacific Air Industries. Flight PAI_OC_60, Frame 127V-14. https://mil.library.ucsb.edu/ap_indexes/FrameFinder/.

UCSB (University of California Santa Barbara). 1968. Single-frame aerial photo by Teledyne Geotronics. Flight TG-2400, Frame 4-15. https://mil.library.ucsb.edu/ap_indexes/FrameFinder/.

UCSB (University of California, Santa Barbara). 1970. Single-frame aerial photo by Regents of the University of California. Flight AMI_OC_70, Frame 5194. https://mil.library.ucsb.edu/ap_indexes/FrameFinder/.

UCSB (University of California, Santa Barbara). 1971. Single-frame aerial photo by Regents of the University of California. Flight AMI_OC_71, Frame 5725. https://mil.library.ucsb.edu/ap_indexes/FrameFinder/.

UCSB (University of California, Santa Barbara). 1972. Single-frame aerial photo by Regents of the University of California. Flight AMI_OC_72, Frame 5990. https://mil.library.ucsb.edu/ap_indexes/FrameFinder/.

UCSB (University of California, Santa Barbara). 1974. Single-frame aerial photo by Teledyne Geotronics. Flight TG-7400, Frame 9-33. https://mil.library.ucsb.edu/ap_indexes/FrameFinder/.

USGS (US Geological Survey). 1932. Newport Beach, California, 1:31,680 scale topographic quadrangle. https://ngmdb.usgs.gov/topoview/viewer/#.

USGS (US Geological Survey). 1965 (Rev. 1968). Newport Beach, California, 1:24,000 scale topographic quadrangle. https://ngmdb.usgs.gov/topoview/viewer/#.

USGS (US Geological Survey). 1965 (Rev. 1982). Newport Beach, California, 1:24,000 scale topographic quadrangle. https://ngmdb.usgs.gov/topoview/viewer/#.

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

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
SC1369\FINAL Geotechnical Report - Edison Park Improvements 1 11/30/2023

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 improvements 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 batting 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 Edison 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 sides 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 yd3) 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 site. 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 allowed 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 Beach 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 William 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 (SWAT) 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 assessment 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 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. • 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 feasibility 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 waste 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 degradation 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 investigations 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 TP3, 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 these 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 were 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. Existing 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 thickness 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 likely 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 earthquake 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 permitted 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 ≤ 1.5Ts 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 SC1369\FINAL Geotechnical Report - Edison Park Improvements 10 11/30/2023
> 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 mediumdense 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 level 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 extends 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 herein assume that the proposed structures will generally be placed outside the identified limits of the waste, 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 (2022), 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 identified 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 reabandonment of the affected wells to current California Geologic Energy Management Division (CalGEM) Standards. Geosyntec recommends that limited 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 SC1369\FINAL Geotechnical Report - Edison Park Improvements 13 11/30/2023
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 uniform 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 onethird 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:
kB = 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.

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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 concrete 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 recommends 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 above 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.

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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 sufficient 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 performed 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.

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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 (2006). 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 2
PROJECT 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
3 \\
PROJECT 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 G G G G G G G G G G G G G G G G G
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-3 HSA-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 investigations 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.

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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 prepared a Site-specific Task Hazard Analysis (THA) that identified Site 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 utilized 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 permits 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 not 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.

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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 subcontracted 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 was 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 was reached. Plastic tarps were placed with plywood 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
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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 2A 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 (HSA) 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 includes 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
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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
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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. The 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 PM10 – 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 PM10 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 Edison Park Waste Delineation
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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 Edison Park Waste Delineation
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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 D2488. 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 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
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 presence 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
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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 presented 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 information 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
June 7, 2021

Page 10 ends

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

Page 11 ends

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

G G G G G G G G G G G G G G G G G G G G

CURRENT INVESTIGATION
AREA

HAMILTON STREET MAGNOLIA STREET

EXISTING BASKETBALL COURT

EDISON COMMUNITY CENTER

OUTDOOR RACQUETBALL COURT

SOFTBALL FIELD

EXISTING TENNIS COURTS

PICNIC AREA
FIRE STATION #4

EDISON HIGH SCHOOL

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-3 HSA-4
HSA-5
HSA-3A
HSA-6A
HSA-5A
HSA-4A
HSA-7A HSA-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 LOCATIONS

EDISON PARK - ADDITIONAL WASTE

DELINEATION

HUNTINGTON BEACH, CALIFORNIA
JUNE 2021 1HL1685B 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)

PREVIOUS INVESTIGATION AREA

CURRENT REQUESTED

INVESTIGATION AREA

EXISTING BURIED LFG HEADER
PIPE

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 0 50

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-3 HSA-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 0 50

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.

APPLICATION FOR WELL CONSTRUCTION PErB^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 ENVIRONMENTAL hEAL "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:

HSO NO. MlOHn
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 PROBESTOTAL DEPTH ^ feet
SEALING MATERIAL Hydrated Bentonite Chips
C. PROPOSED START 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 ofthe
Slate ofCalifornia 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 TOSEALING THE ANNULAR SPACE ORFILLING OF 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
PERMjTBSUED ETA— , , 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

HIGHLY ORGANIC SOILS PT
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, GRAVELSAND-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

MIXTURES WITH 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 OL CL-ML
0 10
20 30
40 50
60 0 10 20 30 40 50 60 70 80 90 16 100
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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 11

TOP OF CASING
Edison Park Waste Delineation DATUM ft +MSL
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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 7

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-inch

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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 7

First depth to groundwater.

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 1 OF
GS FORM:

BORING 2

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 5

TOP OF CASING
Edison Park Waste Delineation DATUM ft +MSL
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 2 OF
GS FORM:

BORING 2

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 5

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 1 OF
GS FORM:

BORING 2

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 9

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 2 OF
GS FORM:

BORING 2

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Sep 28, 20 ELEVATION DATA:

GROUND SURF. 9

TOP OF CASING
Edison Park Waste Delineation DATUM ft +MSL
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

HIGHLY ORGANIC SOILS PT
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, GRAVELSAND-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

MIXTURES WITH 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

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

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

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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 9

TOP OF CASING
Edison Park Waste Delineation DATUM ft +MSL
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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 8

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)

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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 9

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)

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

33.651951
GS FORM:

SHEET
Mar 12, 21
HSA-5A 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 9

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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 7

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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 10

TOP OF CASING
Edison Park Waste Delineation DATUM ft +MSL
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)

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 1 OF
GS FORM:

BORING 1

PROJECT

LOCATION

START DRILL DATE

FINISH DRILL DATE
NUMBER
Mar 12, 21 ELEVATION DATA:

GROUND SURF. 10

TOP OF CASING
Edison Park Waste Delineation DATUM ft +MSL
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 locations 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 TP2 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.

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).

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.

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.

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).

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).

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).

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).

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).

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 (HSA-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 Poorly 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).

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 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 location 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.

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.

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.

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
3 4
5 6
7 8
9 10
11 12
13 14
15 Table of Contents
Client: Geosyntec Consultants, Inc.

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

Page 2 of 32 ends

City Council/Public Financing AuthorityMarch 3, 2026

City Council/Public Financing Authority
March 3, 2026