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Home My WebLink About2025-07-14; Historic Preservation Commission; 04; Ocean View Point – Paleontological Monitoring Report Meeting Date: July 14, 2025 To: Historic Preservation Commission From: Mike Strong, Assistant Director of Community Development Staff Contact: Mike Strong, Assistant Director of Community Development mike.strong@carlsbadca.gov, 442-339-2721 Subject: Ocean View Point – Paleontological Monitoring Report. Recommended Action Receive report. Executive Summary Ocean View-Carlsbad, LLC (Developer) received city approvals to subdivide and develop 13 single-family residential lots on a 21.9-acre property at the southern terminus of Twain Avenue, abutting the Spyglass Hills neighborhood. As a condition of city approvals, the Developer needed to monitor grading activities for paleotropical discoveries and recover them during the project’s implementation. At the conclusion of the project’s grading activities, the Developer was required to file a paleontological monitoring report to the City Planner and the Historic Preservation Commission (HPC). Most of the ground excavation to complete the project is complete. At its July 14, 2025 meeting, the HPC is being asked to receive the paleontological monitoring report. City staff will provide a brief overview of the report’s findings. Discussion On August 20, 2019, the City Council approved a Mitigated Negative Declaration, Mitigation Monitoring and Reporting Program (MMRP) and a land use development application for the Ocean View Point project.1 The project is located in the hills of Evans Point at the southern terminus of Twain Avenue, generally between Cannon Road and College Boulevard. The 21.91- acre project is accessed via a private cul-de-sac, Verne View, off Twain Avenue. The project involves the development of a 13-unit subdivision on 5.4 acres of the project site. The remaining 16.5 acres was added to the city's Habitat Management Plan (HMP) Preserve as open space. The project's proposed residential density is 2.7 dwelling units per acre, which was consistent with the proposed land use and zoning for the developable portion of the site. The development also includes an HOA lot, a recreation area/storm water pipeline easement lot, 1 2019-08-20; City Council; ; Ocean View Point (carlsbadca.gov) HISTORIC PRESERVATION COMMISSION July 14, 2025 Item #4 1 of 40 Staff Report and a storm water chamber treatment basin lot. A public trail easement occupies the northwest edge of the project. The Ocean View Point Project involved trenching, excavation, and grading activities for the construction of a 13-lot residential subdivision and associated site improvements. An estimated 20,00 cubic yards of earth were proposed for excavation. The highest preconstruction elevation at the project was approximately 326 feet above mean sea level (AMSL) at the Twain Avenue cul-de-sac, while the lowest elevation was located along the southwestern edge at about 275 feet AMSL. Final foundation pad elevations range from about 318 feet to 309 feet AMSL. Pursuant to the California Environmental Quality Act (CEQA) and the Environmental Protection Ordinance (Title 19) of the Carlsbad Municipal Code (CMC), during the entitlement process city staff conducted an environmental impact assessment to determine if the project could have any potentially significant impacts on the environment. The environmental impact assessment identified potentially significant impacts to both Biological Resources and Cultural Resources. Mitigation measures were incorporated into the design of the project and the MMRP such that all potentially significant impacts will be mitigated to below a level of significance. In accordance with the adopted MMRP, a paleontologist or designate was to be present during those relative phases of grading as determined at the pre-grading conference. The monitor was given the authority to temporarily direct, divert, or halt grading to allow recovery of fossil remains. If fossils are discovered, the paleontologist (or paleontological monitor) was directed to recover them; and any fossil discoveries, along with copies of all pertinent field notes, photos, and maps, were to be deposited (as a donation) in a scientific institution with permanent paleontological collections such as the San Diego Natural History Museum or retained by the city and displayed to the public at an appropriate location such as a library or City Hall. During rough grading, there was a discovery of Eocene-aged fossils during grading activities on Oct. 1, 2024. Further paleontological monitoring at the subject property resulted in three significant new collections of shallow marine invertebrate and plant fossils from “member B” of the early middle Eocene-aged Santiago Formation, deposited about 44.2 to 47.5-million years ago. Sedimentary rocks of the Santiago Formation at the subject property mostly represent deposits of sand and shells as a result turbidity within a shallow marine waters. Fossils were also collected from an associated mudstone/shale horizon representing calm depositional conditions. At least 29 species of marine invertebrates, consisting almost entirely of bivalve (19 species) and gastropod mollusks (10 species) were found at the project. A rare specimen of the gastropod Velates was recovered, along with important examples of the turret snail Turritella uvasana that may offer useful biochronological data. The recovered fossils were carefully prepared and curated by the paleontological staff at BFSA Environmental Services, a Perennial Company (BFSA), and subsequently deposited into the paleontological collections of the San Diego Society of Natural History, which operates the San Diego Natural History Museum in Balboa Park. In accordance with MMRP measure no. PALEO-7, prior to occupancy of any buildings, a paleontological monitoring report was submitted to the City Planner, which describes all the July 14, 2025 Item #4 2 of 40 materials recovered and provides a tabulation of the number of hours spent by paleontological monitors on the site. The report was also to be filed with HPC (attached as Exhibit 1). Paleontological monitoring and mitigation measures for excavation activities at the Ocean View Point Project have been satisfactorily completed, in accordance with the project’s conditions of approval. This report responds to the requirement of MMRP measure no. PALEO-7. Fiscal Analysis There is no direct fiscal impact associated with receiving this informational report. Environmental Evaluation (CEQA) The proposed action is not a “project” as defined by CEQA Section 21065 and CEQA Guidelines Section 15378(b)(5) and does not require environment review under CEQA Guidelines Section 15060(c)(3) and 15061(b)(3), because website development is an organizational or administrative government activity that does not involve any commitment to any specific project which may result in a potentially significant physical impact on the environment. Exhibits 1.Ocean View Point – Paleontological Monitoring Report July 14, 2025 Item #4 3 of 40 PALEONTOLOGICAL MONITORING REPORT FOR THE OCEAN VIEW POINT PROJECT Case No. GPA 15-02 / ZC 15-03 / LCPA 15-05 / CT 15-07 / PUD 15-15 / CDP 15-53 / HDP 15-03 / HMP 15-05 (DEV15043) CITY OF CARLSBAD, SAN DIEGO COUNTY, CALIFORNIA APN 212-272-01, -02, -03, -04, -05, and -07 Submitted to: City of Carlsbad Community Development Department 1635 Faraday Avenue Carlsbad, California 92008 Prepared for: Shea Homes 9990 Mesa Rim Road, Suite 200 San Diego, California 92121 Prepared by: BFSA Environmental Services, a Perennial Company 14010 Poway Road, Suite A Poway, California 92064 May 8, 2025 Exhibit 1 July 14, 2025 Item #4 4 of 40 BFSA Environmental Services A Perennial 'omJl.111)' Paleontological Monitoring Report for the Ocean View Point Project i Paleontological Database Information Authors: Todd A. Wirths, M.S., P.G., Principal Paleontologist, California Professional Geologist #7588 Consulting Firm: BFSA Environmental Services, a Perennial Company 14010 Poway Road, Suite A Poway, California 92064 (858) 484-0915 Report Date: May 8, 2025 Report Title: Paleontological Monitoring Report for the Ocean View Point Project, City of Carlsbad, San Diego County, California Prepared for: Shea Homes 9990 Mesa Rim Road, Suite 200 San Diego, California 92121 Submitted to: City of Carlsbad Community Development Department 1635 Faraday Avenue Carlsbad, California 92008 USGS Quadrangle: Township 12 South, Range 4 West, of the San Luis Rey, California (7.5-minute) Quadrangle Agency Numbers: GPA 15-02 / ZC 15-03 / LCPA 15-05 / CT 15-07 / PUD 15-15 / CDP 15-53 / HDP 15-03 / HMP 15-05 (DEV15043) Assessor’s Parcel Numbers: 212-272-01, -02, -03, -04, -05, and -07 Study Area: 21.91 acres Key Words: Eocene; Santiago Formation; marine invertebrate fossils. July 14, 2025 Item #4 5 of 40 Paleontological Monitoring Report for the Ocean View Point Project ii Table of Contents Section Description Page EXECUTIVE SUMMARY ....................................................................................................... iv 1.0 INTRODUCTION ...................................................................................................1.0–1 1.1 Project Description...................................................................................................1.0–1 1.2 Personnel, Monitoring Dates ...................................................................................1.0–1 2.0 REGULATORY SETTING .....................................................................................2.0–1 3.0 METHODOLOGY ..................................................................................................3.0–1 3.1 Field Methods ..........................................................................................................3.0–1 3.1.1 Monitoring ...................................................................................................3.0–1 3.1.2 Fossil Salvage ..............................................................................................3.0–1 3.1.3 Stratigraphic Data Collection......................................................................3.0–2 3.2 Laboratory Methods .................................................................................................3.0–2 3.2.1 Specimen Preparation ..................................................................................3.0–2 3.2.2 Curation .......................................................................................................3.0–2 4.0 MONITORING RESULTS .....................................................................................4.0–1 4.1 Lithostratigraphy ......................................................................................................4.0–1 4.1.1 Overview ......................................................................................................4.0–1 4.1.2 Lower Pleistocene Very Old Paralic Deposits ............................................4.0–1 4.1.3 “Member B” of the Middle Eocene Santiago Formation ............................4.0–1 4.2 Paleontological Resources Collecting Localities .....................................................4.0–4 4.2.1 SDSNH Locality 7923 ..................................................................................4.0–4 4.2.2 SDSNH Locality 7924 ..................................................................................4.0–9 4.2.3 SDSNH Locality 7925 ..................................................................................4.0–9 5.0 ANALYSIS RESULTS ...........................................................................................5.0–1 5.1 Geologic Setting.......................................................................................................5.0–1 5.1.1 Background ..................................................................................................5.0–1 5.1.2 Project Setting ..............................................................................................5.0–1 5.2 Paleontology ............................................................................................................5.0–2 5.2.1 Previous Work ..............................................................................................5.0–2 5.2.2 Invertebrate Fauna ......................................................................................5.0–2 5.3 Paleoclimate .............................................................................................................5.0–2 5.4 Biochronology..........................................................................................................5.0–3 6.0 SIGNIFICANCE AND DISPOSITION OF THE FOSSIL RESOURCES .............6.0–1 7.0 CERTIFICATION ...................................................................................................7.0–1 8.0 REFERENCES ........................................................................................................8.0–1 July 14, 2025 Item #4 6 of 40 Paleontological Monitoring Report for the Ocean View Point Project iii Appendices Appendix A – Paleontological Mitigation Measures Appendix B – Museum Acceptance Letter Appendix C – Fossil Discovery Notice List of Figures Figure Description Page Figure 1.0–1 General Location Map .................................................................................1.0–2 Figure 1.0–2 Project Location Map ...................................................................................1.0–3 Figure 4.1–1 Geologic Map...............................................................................................4.0–2 Figure 4.2–1 Fossil Locality Map .....................................................................................4.0–5 List of Tables Table Description Page Table 4.2–1 List of fossils recovered from Member B of the Santiago Formation at the Ocean View Point Project ..................................................................4.0–6 List of Plates Plate Description Page Plate 4.1–1 View of grading cut ....................................................................................4.0–3 Plate 4.2–1 The fossil gastropod Velates (SDSNH loc.7923, species lot 172599) . .......4.0–8 Plate 4.2–2 The fossil gastropod Ampullella schencki (SDSNH loc. 7924, species lot 172616) ...................................................................................................4.0–10 Plate 4.2–3 Multiple specimens of the fossil gastropod Turritella uvasana (SDSNH loc. 7925, species lot 172628)......................................................................4.0–11 July 14, 2025 Item #4 7 of 40 Paleontological Monitoring Report for the Ocean View Point Project iv EXECUTIVE SUMMARY Paleontological monitoring and mitigation measures initiated in response to the City of Carlsbad’s environmental concerns for excavation activities at the Ocean View Point Project, a new private community in the Evans Point area of Carlsbad in San Diego County, California, have been satisfactorily completed, in accordance with the project’s Conditions of Approval (COAs), PALEO-1 to PALEO-7. Paleontological monitoring at the subject property resulted in three significant new collections of shallow marine invertebrate and plant fossils from “member B” of the early middle Eocene-aged Santiago Formation, deposited about 44.2- to 47.5-million years ago. Sedimentary rocks of the Santiago Formation at the subject property mostly represent deposits of sand and shells as a result turbidity within a shallow marine waters. Fossils were also collected from an associated mudstone/shale horizon representing calm depositional conditions. At least 29 species of marine invertebrates, consisting almost entirely of bivalve (19 species) and gastropod mollusks (10 species) were found at the project. A rare specimen of the gastropod Velates was recovered, along with important examples of the turret snail Turritella uvasana that may offer useful biochronological data. The recovered fossils were carefully prepared and curated by the paleontological staff at BFSA Environmental Services, a Perennial Company (BFSA), and subsequently deposited into the paleontological collections of the San Diego Society of Natural History (SDSNH), which operates the San Diego Natural History Museum (SDNHM) in Balboa Park. July 14, 2025 Item #4 8 of 40 Paleontological Monitoring Report for the Ocean View Point Project 1.0–1 1.0 INTRODUCTION 1.1 Project Description The Ocean View Point Project involved trenching, excavation, and grading activities for the construction of a 13-lot residential subdivision. The project is located in the hills of Evans Point at the southern terminus of Twain Avenue, generally between Cannon Road and College Boulevard, in the city of Carlsbad, San Diego County, California (Figures 1.0–1 and 1.0–2). The 21.91-acre project consists of six parcels (APNs 212-272-01, -02, -03, -04, -05, and -07) and is situated within the northeast quarter of Section 16 and the northwest quarter of Section 15 of Township 12 South, Range 4 West of the San Bernardino Baseline and Meridian on the United States Geological Survey (USGS) San Luis Rey, California (7.5-minute) topographic quadrangle map (see Figure 1.0–2). The project is proposed to be accessed via a private cul-de-sac, Verne View, off Twain Avenue. The development also includes an HOA lot, a recreation area/storm water pipeline easement lot, and a storm water chamber treatment basin lot. A public trail easement occupies the northwest edge of the project. An estimated 20,00 cubic yards of earth were proposed for excavation. The highest preconstruction elevation at the project was approximately 326 feet above mean sea level (AMSL) at the Twain Avenue cul-de-sac, while the lowest elevation was located along the southwestern edge at about 275 feet AMSL. Final foundation pad elevations range from about 318 feet to 309 feet AMSL. 1.2 Personnel, Monitoring Dates Paleontological monitoring of earthmoving and trenching activities for the project occurred intermittently, as needed, from October 2, 2024, to January 2, 2025. Monitoring mainly consisted of active observations of all earthmoving activities, including trenching for utilities. In addition, spoil piles generated by these activities were carefully examined, as well as freshly cut slopes and sidewall exposures. The following personnel have been involved in the completion of field monitoring, fossil collection, laboratory processing, museum curation, archival documentation, report generation, and graphics production for this project: Todd A. Wirths, Principal Investigator and Paleontologist with BFSA, Greg C. Agyan, Sabrina Corcoran, Alexander Brill, Jeffrey Henry, Brian Coker, Emily T. Soong, and Payton Swanson. Todd Wirths was responsible for the laboratory preparation and curation of the fossil remains. The fossil specimens were deposited at the SDNHM, where they will receive long-term archival care and conservation. July 14, 2025 Item #4 9 of 40 1663 ft 0 Camp Pendleton 5 miles BFSA Environmental Services A Perennial Company Bo Asa II Oceanside B\-..JO 1.0-2 San Marcos Figure 1.0-1 General Location Map The Ocean View Point Project Esri World Topographic Map Oat Hills Escondid July 14, 2025 Item #4 10 of 40 Agra Wire Mountain Carlsbad Project .. Encinitas Cardiff By the Sea Vista 584ft I Solana Beach San Dieguito Valley Escondido Creek County Preserve r:. OJ n ;u C. BFSA Environmental Services A Perennial Company Figure 1.0-2 Project Location Map The Ocean View Point Project USGS San Luis Rey and Encinitas Quadrangles (7.5-minute series) 1.0-3 July 14, 2025 Item #4 11 of 40 Paleontological Monitoring Report for the Ocean View Point Project 2.0–1 2.0 REGULATORY SETTING Pursuant to California Environmental Quality Act (CEQA) regulations for excavation and/or construction related activities, the City of Carlsbad’s Planning Commission required paleontological monitoring during grading activities at the Ocean View Point Project. The project’s “Addendum to the Mitigated Negative Declaration” was conditionally approved and adopted by the Planning Commission division of the City because the planned construction activity would occur in areas that have been judged to be paleontologically sensitive based upon the distribution of known fossil localities and potentially fossil-bearing sedimentary formations (City of Carlsbad 2017). The project’s Addendum to the Mitigated Negative Declaration includes paleontological Mitigation Measures (MMs) PALEO-1 to PALEO-7 (Appendix A). MMs PALEO-1 to PALEO- 4, which include guidelines for the preconstruction meeting, monitoring timing and procedures, and resource collection techniques, have been completed. This report documents MMs PALEO- 5, covering fossil specimen cleaning, repairing, sorting, and cataloguing, and PALEO-6, which covers deposition of the fossil specimens to a scientific institution. For this project, the fossil collection has been deposited at the SDNHM (Appendix B). The submittal of this final paleontological monitoring report will satisfy MM PALEO-7 for the project. This report generally adheres to the reporting standards for paleontological monitoring outlined by the County of San Diego (Stephenson et al. 2009; Deméré and Walsh 2011). July 14, 2025 Item #4 12 of 40 Paleontological Monitoring Report for the Ocean View Point Project 3.0–1 3.0 METHODOLOGY 3.1 Field Methods Field, laboratory, and reporting methods were generally conducted according to County of San Diego paleontological guidelines (Deméré and Walsh 1993; Stephenson et al. 2009) and standard practices (Kummel and Raup 1965; Society of Vertebrate Paleontology 2010). 3.1.1 Monitoring Monitoring involved close examination of fresh heavy machine cuts, excavation and drilling spoils, and temporary stockpiles derived from utility trenching, excavation activities, and mass grading work on the properties. All fresh cuts, exposures and resultant spoil piles generated by trenching, excavation, and grading activities were closely examined for fossils. Blocks of weakly indurated sediment were routinely broken apart and examined in order to expose surfaces that might reveal additional fossils or impressions thereof. As discussed during the preconstruction meeting for the project, authorization was given to allow subsequent (late afternoon or evening) notification by email of the discovery of marine invertebrates or other fossils during the course of daily monitoring. The City was informed by Principal Investigator Todd A. Wirths at the time of the initial fossil discoveries (Appendix C). Further notifications were not required of continuous collecting of similar materials during the monitoring process. 3.1.2 Fossil Salvage Methods of fossil salvage differ depending on the types of fossils that are being collected and the types of activities that are being monitored (e.g., drilling, trenching, building excavation, or mass grading). For the Ocean View Point Project, salvage was partly derived from the spoils generated by grading and excavation activities, but most of the collections were generated by picking apart exposed cuts with hand tools. Fossil salvage consisted of spotting fossil specimens encased in their formational matrix and collecting them or by breaking down chunks of the formation by a rock hammer, pick, or knife for marine mollusk shells and impressions of shells potentially contained in them. Multiple spot collections of fossils were made over several days during the monitoring process which resulted in 51 cardboard flats and three boxes of selected fossil specimens and fossiliferous matrix with specimens that contain marine mollusks. All of the temporary cardboard flats were labeled in the field with a unique field number, the name of the collector, and the date collected before being returned to the laboratory for further processing. July 14, 2025 Item #4 13 of 40 Paleontological Monitoring Report for the Ocean View Point Project 3.0–2 3.1.3 Stratigraphic Data Collection During monitoring and fossil collecting activities, field notes are recorded with remarks on the location, depth, and elevation of grading and discovered fossil locations. Geologically, the lithology and stratigraphy observed at the project are noted to include sediment (matrix) grain size and distribution, sediment color, thickness, and distribution of sedimentary layers (beds), sedimentary depositional and structural features, bedding contacts, and the disposition of the fossils within beds, etc. 3.2 Laboratory Methods 3.2.1 Specimen Preparation Fossils collected during the Ocean View Point Project were returned to the BFSA laboratory in cardboard collecting flats and buckets. In the laboratory, matrix pieces were closely examined for surface-preserved impressions of shells. Other blocks of matrix were broken apart to expose additional surfaces that might yield additional impressions. Some specimens are trimmed using a wire rod saw, cutting through the matrix, and are left as small cubes. Because of ground water dissolution, some of the sandstone impressions and molds needed to be stabilized with a Butvar B-76 solution, an archival acrylic hardener, before further processing and curation. All delicate impressions were carefully cleaned using a variety of brushes and fine tools (e.g., X-Acto knives) to remove any adhering sand particles before being stabilized with Butvar B-76. Only rough sorting into species groups was undertaken during the preparation and cleaning process. After all rough sorting was completed, the collections were fine sorted into species. Wet screening methods were not employed for preparation of potential small to tiny fossils contained in the matrix, since the formation yielding the fossils was too consolidated. 3.2.2 Curation The following steps describe the typical curation procedures applied to fossil specimens. All specimens that are large enough receive a white permanent acrylic or enamel paint spot. Small specimens are placed in glass vials, which also receive a paint spot, and closed with an inert plastic stopper. Natural cork stoppers are a poor substitute because of the acidic nature of cork oak. Two numbers, a locality number and a specimen or species lot number, are assigned to each species lot (all the specimens of one species from any particular locality). These numbers are written on the paint spot in waterproof India ink, and on a small, acid-free paper tag that is placed in each glass vial. A printed paper label (60- to 70-pound acid-free card or cover stock) is added to each specimen tray and includes the name of the company responsible for the collection and curation of the collection (BFSA); the receiving institution’s acronym (SDSNH) and locality number; a scientifically accurate locality description, including street address (if applicable), city, county and state; the geologic age of the fossils; the name of the formation; the name of the identifying paleontologist; and the date identified. The species lot number, scientific name (including author and date published), and initials of the curatorial assistant and date curated are July 14, 2025 Item #4 14 of 40 Paleontological Monitoring Report for the Ocean View Point Project 3.0–3 added to each label in waterproof India ink. The specimens are then taken to a local curation facility, transferred into the institution’s unit-sized specimen trays, placed in steel drawers, and eventually placed into the collections (Appendix B). The receiving institution, SDNHM, is responsible for entering the locality and specimen data into their own catalogue(s) and/or computer database systems, generating any additional labels they may desire, and placing the specimens into their proper place in the archival collections. July 14, 2025 Item #4 15 of 40 Paleontological Monitoring Report for the Ocean View Point Project ________________________________________________________________________________________________________________ 4.0–1 4.0 MONITORING RESULTS 4.1 Lithostratigraphy 4.1.1 Overview As shown on the published geologic map of the Oceanside 30'x60' quadrangle (Figure 4.1–1, after Kennedy and Tan 2007), the middle Eocene Santiago Formation (brown areas labeled “Tsa”) composes most of the geology at the Ocean View Point Project. The Santiago Formation in this area of the county unconformably underlies lower Pleistocene-aged very old paralic deposits (tan areas labeled “Qvop10”) and overlies Mesozoic volcanic rocks (e.g., the Santiago Peak Volcanics) that are exposed just east of the project (green areas in Figure 4.1–1). Wilson (1972) informally divided the Santiago Formation into three members, “A,” “B,” and “C” in ascending order (Wilson 1972). He mapped “member B” through the project, primarily based upon fossil content, lithology, and stratigraphic relationships. The stratigraphy exposed during excavation activities at the project shows that the Santiago Formation experienced tectonic deformation, expressed as a northwestly-plunging anticline (Plate 4.1–1). As such, older stratigraphic units within the Santiago Formation were encountered at the southeastern portion of the project, while younger units occur at the northwest end. The anticlinal fold is truncated by the Pleistocene very old paralic deposits. In descending chronological order, the geologic units encountered at the Ocean View Point Project are described below. 4.1.2 Lower Pleistocene Very Old Paralic Deposits The very old paralic deposits compose the surficial geologic formation at the project. The paralic deposits are variably composed of reddish brown, fine-grained sandstone, coarse- grained sandstone, and conglomerate, and are topped with about one to two feet of topsoil. Along the northern portion of the project, the deposits are as much as 15 feet thick, but erosionally pinch out southwards across the project. The lower contact is an angular unconformity with the Santiago Formation at an elevation ranging from approximately 309 to 311 feet AMSL. No fossils were found in the very old paralic deposits. 4.1.3 “Member B” of the Middle Eocene Santiago Formation Deposits composing the deformed strata of “member B” of the Santiago Formation at the project were variable, containing pale yellowish-brown sandstones, grayish siltstones, and olive mudstones. The lower contact was not encountered. Marine invertebrate fossils were present in many of the stratal units but only consisted as shell impressions in matrix. The expression of the fossil shells in the matrix ranged from poor to moderate in quality. July 14, 2025 Item #4 16 of 40 BFSA Environmental Services A Perennial Company Legend Geologic Units Late Holocene E]Alluvial flood-plain deposits E]Landslide deposits, undividedLate to middle Pleistocene B Old alluvial flood-plain deposits, aaa undivided I 00P6-7 I Old paralic deposits, Units 6-7 I 00P2-4 I Old paralic deposits, Units 2-4 Middle to early Pleistocene I av% I Very old paralic deposits, Unit 13 1avop10-11I Very old paralic deposits, Units 10-11 Middle to early Pleistocene � Very old paralic deposits, �Unit 10 Middle Eocene G Santiago Formation Upper Cretaceous E] Point Loma Formation0 Lusardi Formation Mid-Cretaceous 0 Tonalite, undivided Mesozoic r--;::---i Metasedimentary and L..::'._J metavolcanic rocks, undivided Figure 4.1-1 Geologic Map The Ocean View Point Project Geology after Kennedy and Tan (2007) 4.0-2 July 14, 2025 Item #4 17 of 40 ---- e >>1~)7 =-===~·====== BFSA Environmental Services A Perennial Company Plate 4.1-1 View of grading cut looking approximately southeast along the anticlinal axis in the Santiago Formation. The axis is plunging toward the viewer. The excavated pit is for the proposed storm water chamber treatment system. The development's roadway encircles the pit. Note the brown sediments of the very old paralic deposits on the left truncating the Santiago Formation. The Ocean View Point Project July 14, 2025 Item #4 18 of 40 Paleontological Monitoring Report for the Ocean View Point Project ________________________________________________________________________________________________________________ 4.0–4 4.2 Paleontological Resources Collecting Localities The subject property is located at the southern terminus of Twain Avenue, a proposed private residential subdivision in Carlsbad (see Figures 1.0–1 and 1.0–2). SDSNH locs. 7923, 7924, and 7925 represent specimens of the impressions of marine mollusks collected from grading cuts from “member B” of the Santiago Formation. Plant fossils were collected from SDSNH loc. 7923 as well. Fossils from three field collecting localities are assigned to three SDSNH localities based upon stratigraphic relationships and lithologic characters. Multiple taxa were represented with just one or two taxa, suggesting the collections under-represent the fossil fauna of the Santiago Formation at the project. Other field localities were collected but due to time constraints were not processed. The areas from which fossils were collected are shown on Figure 4.2–1. Fossils recovered from the project are listed in Table 4.2–1. Copies of field notes for the collections have been included with the locality data provided to the SDNHM with the fossil collections. The letter of acknowledgement from the SDNHM is provided in Appendix B. 4.2.1 SDSNH Locality 7923 Locality 7923 was collected from the early middle Eocene-aged (approximately 45- to 48-million-year-old) Santiago Formation, as mapped by Kennedy and Tan (2007), within “member B” of Wilson (1972). This locality represents a modest collection of internal and external molds of the shells of shallow marine bivalve and gastropod mollusks from a stratigraphically deeper sandstone horizon from the eastern area of the project. Bivalves were disarticulated. Notable genera include a fragmentary example of Velates (Plate 4.2–1), representing just the second specimen of these long-extinct snails reported from SDSNH records, and fragments of Turritella uvasana, a genus used in biochronological studies in marine paleontology. Locality 7923 is also notable for a relative abundance of woody, reed-like stems of an unidentifiable plant. The remainder of the bivalve and mollusk taxa in the collection constitute fairly common occurrences in the Santiago Formation. Fossils were collected by paleontological monitor Greg C. Agyan as field number GA-OVP-08 on October 15, 2024, at an elevation of about 310 to 311 feet AMSL. Specimens from SDSNH loc. 7923 have been assigned SDSNH specimen/species lot numbers 172599 to 172614. Localities 7924 and 7925 overlie loc. 7923. July 14, 2025 Item #4 19 of 40 Ii-I &1i1II( ; 11,1 ;, ' 1 ' , �>) 1\ t'//, // 11JJ;J)\1 '''1"' �::;.. 1)111/(JiJ//jl/1,' Af'N208-'/!/;;;l;11;iJ;;f • 4:J/1 I I //, --�---.-------' 1f1(f;/1/, /,//';, ,11;1111, 1//,;, / 1/1 ,1/1 t; ·_,,- BFSA Environmental Services A Perennial Company -, ,,,\'l \II\' 1 I\ 1,{\\\\111;\"'"''\,I , ,I/ 1/11 I Figure 4.2-1 Fossil Locality Map The Ocean View Point Project I I I) '\\ � " \� ��--,��«-�'�.��·��i-:: " � -w�Jt'�\� ��·\ ¾�� N�ED \ \,�\_ \ \,' \ '�. \\\,\\\,, \V-' \'(\' \\\' \1\M\11' I I I I\\\ � \\\\\ \ \ \ ,\ \\\ \ \1 \ 11\1 \,1 I I i\\ , 11 1 \\ I\ i',I I \ \I ' I \ \ ' I I '\ I\ \ \ \ I I " I \ ,\ \ \ i I 1/1 1}11,1! Legend D Project boundary 0 Fossil locality July 14, 2025 Item #4 20 of 40 LOTl4 GIW'HCl;tC;41£r•r lOTIO -·-.APlt20IJ.141•16 LOT9 Wl'!43'0 N'N:20J.J6f,11 \ I \ I \ I 'v / / Paleontological Monitoring Report for the Ocean View Point Project ________________________________________________________________________________________________________________ 6 Table 4.2–1 List of fossils recovered from “Member B” of the Santiago Formation at the Ocean View Point Project Taxon All taxonomic identifications by T. A. Wirths SDSNH Locality No. 7923 7924 7925 Mollusca: Gastropoda (snails) Velates sp. Turritella uvasana ssp. cf Olequahia sp. Calyptraea diegoana (Conrad, 1855) cf. Benoistea sp. Ampullella schencki Vokes, 1939 Aplustridae, indet. Neogastropoda, indet. Gastropoda, indet. (1st species) Gastropoda, indet. (2nd species) 1f 2f 1f 1p — — — — — — — — — — 1 1 1fp 1 — — — 16**, 1p — — — — — — 1f 1f Mollusca: Bivalvia (clams and scallops) Nuculana (Saccella) sp. Glycymeris rosecanyonensis Hanna, 1927 Miltha packi (Dickerson, 1916) Diplodonta unisulcatus (Vokes, 1939) Myrtea sp., aff. M. (Myrtea) taffana (Dickerson, 1916) Acanthocardia brewerii (Gabb, 1864) Cardiidae, indet. Pelecyora aequilateralis (Gabb, 1869b) Pitar sp. Macrocallista sp. Tellina jollaensis Dickerson, 1916 Tellina soledadensis Hanna, 1927 Tellina townsendensis Clark, 1926 Tellina sp. Macoma sp. Psammobiidae, indet. Corbula sp. Bivalvia, indet. (1st species) Bivalvia, indet. (2nd species) 2 1, 1p 2, 1p 1p — — 1f — 2fp 1, 1fp — — 1fp — — — — 1 2 1 — — — 1 — — 1f — — 2 1pp — — 1p — 1 1 — — — 3, 3p — 3 2, 2fp, 1f — — 1f 4, 2p 1f — — 2 — 1, 2p — 1fΔ 1f Mollusca: Scaphopoda (tusk shells) Dentalium sp. — 1 1ΔΔ Plantae (plants) Woody, reed-like stems 10f* — — Ichnofossil (Trace fossils: preserved biological activity) Ophiomorpha isp., burrow 1 — — July 14, 2025 Item #4 21 of 40 Paleontological Monitoring Report for the Ocean View Point Project ________________________________________________________________________________________________________________ 7 Abbreviations: Specimen numbers: # = number of specimens and/or individuals SDSNH loc. 7923: specimen numbers 172599 – 172614 aff. = Latin: affinis, has affinities with SDSNH loc. 7924: specimen numbers 172615 – 172627 cf. = Latin: confer, compares to SDSNH loc. 7925: specimen numbers 172628 – 172640 f = fragmentary specimen(s) indet. = indeterminate isp. = (unidentifiable) ichnospecies (trace fossil) p = part and counterpart present pp = 3 counterparts present sp. = (unidentifiable) species ssp. = (unidentifiable) subspecies *= matrix pieces with one or more sections of stems ** = matrix pieces with one or more shell impressions Δ = 1 large clam in 6 matrix pieces ΔΔ = too fragmentary for curation July 14, 2025 Item #4 22 of 40 BFSA Environmental Services A Perennial Company Plate 4.2-1 The fossil gastropod Ve/ates (SDSNH loc. 7923, species lot 172599) The Ocean View Point Project July 14, 2025 Item #4 23 of 40 Paleontological Monitoring Report for the Ocean View Point Project ________________________________________________________________________________________________________________ 4.0–9 4.2.2 SDSNH Locality 7924 Locality 7924 was collected from the early middle Eocene-aged (approximately 45- to 48-million-year-old) Santiago Formation, as mapped by Kennedy and Tan (2007), within “member B” of Wilson (1972). This locality represents a modest collection of internal and external molds of the shells of shallow marine bivalve, gastropod, and scaphopod mollusks from a dark olive gray clayey siltstone horizon from the middle of the project, between the other two localities. The bivalves were disarticulated. Notable taxa include a good specimen of the snail Ampullella schencki (Plate 4.2–2) and an example of a bubble-shell snail from the family Aplustridae. The remainder of the bivalve and mollusk taxa in the collection constitute fairly common occurrences in the Santiago Formation. Fossils were collected by paleontological monitor Sabrina Corcoran as field number SC-OVP-03 on November 22, 2024, at an elevation of roughly 300 feet AMSL. Specimens from SDSNH loc. 7924 have been assigned SDSNH specimen/species lot numbers 172615 to 172627. Locality 7924 overlies loc. 7923 and underlies loc. 7925. 4.2.3 SDSNH Locality 7925 Locality 7925 was collected from the early middle Eocene-aged (approximately 45- to 48-million-year-old) Santiago Formation, as mapped by Kennedy and Tan (2007), within “member B” of Wilson (1972). This locality represents a modest collection of internal and external molds of the shells of shallow marine bivalve and gastropod mollusks from an upper sandstone unit in the northwest area of the project, stratigraphically above the other two localities. The turret snail Turritella uvasana (Plate 4.2–3) and the cockle Acanthocardia brewerii dominate the collection. The remainder of the bivalve and mollusk taxa in the collection constitute fairly common occurrences in the Santiago Formation. Fossils were collected by paleontological monitor Greg C. Agyan as field number GA-OVP-07 on October 10, 2024, at an elevation of about 307 feet AMSL. Specimens from SDSNH loc. 7925 have been assigned SDSNH specimen/species lot numbers 172628 to 172640. Locality 7925 stratigraphically overlies localities 7923 and 7924. July 14, 2025 Item #4 24 of 40 0 BFSA Environmental Services A Perennial Company Plate 4.2-2 The fossil gastropod Ampullella schencki (SDSNH loc. 7924, species lot 172616) The Ocean View Point Project July 14, 2025 Item #4 25 of 40 BFSA Environmental Services A Perennial Company Plate 4.2-3 Multiple specimens of the fossil gastropod Turritella uvasana (SDSNH loc. 7925, species lot 172628) The Ocean View Point Project July 14, 2025 Item #4 26 of 40 ~ 0 I Paleontological Monitoring Report for the Ocean View Point Project 5.0–1 5.0 ANALYSIS RESULTS 5.1 Geologic Setting The relationships of Eocene strata in northwestern San Diego County are complex, consisting of interfingering shallow marine, lagoonal, and terrestrial sedimentary facies (Tan and Kennedy 1996). As a result, Eocene rocks have undergone several revisions on account of rapid facies changes, variable lithologies, and limited outcrops, adding difficulty to drawing final formational boundaries. 5.1.1 Background In a graduate school thesis, Wilson (1972) was the first to assign Eocene-aged sedimentary rocks south of the Santa Margarita River to the Santiago Formation, a formation originally ascribed to outcrops in Orange County. He recognized three informal divisions: a basal, usually unfossiliferous “member A,” a widespread “member B” with marine invertebrate fossils, and an upper fossiliferous “member C” containing terrestrial mammal remains. An outstanding, invertebrate fossil locality reported by Givens and Kennedy (1976) was described as originating from a lagoonal or estuarine environment of the Del Mar Formation. Weber (1982) used an “A,” “B,” and “C” subdivision scheme like Wilson (1972) in his mapping of the Santiago Formation, although he utilized lithologic criteria as the basis for his subdivision and without paleontological data. In another graduate thesis, Eisenberg (1983) mapped the Eocene geology in the nearby Encinitas and Rancho Santa Fe quadrangles to the south. He suggested Evans Point, the location of the project, divides the Santiago Formation to the north from similar formations of the La Jolla Group to the south (Eisenberg and Abbott 1985). Mapping by Tan and Kennedy (1996) assigned the Eocene rocks at the project to the Santiago Formation using lithologic, stratigraphic, and facies relations. Later, in their digital geologic compilation map, Kennedy and Tan (2007) extended the limits of the Santiago Formation as far south as Encinitas and, in the process, encompassed all other previously named Eocene-aged units, broadening the lithologic and stratigraphic qualities for the formation. They subdivided the Santiago Formation into three parts: a basal, coarse-grained arkosic sandstone unit; a middle, salt-and-pepper medium-grained sandstone unit; and an upper gray, coarse- grained arkosic sandstone and grit unit. These units are interstratified throughout by massive claystone interbeds and fossiliferous, lagoonal claystone and siltstone tongues and lenses. Unfortunately, Kennedy and Tan (2007) do not indicate the subdivisions on their map. 5.1.2 Project Setting A shallow marine setting is suggested as the depositional environment for the Santiago Formation at the project, based upon the molluscan fauna recovered. In general, a succession of sandy to muddy to sandy lithofacies generally characterizes the stratigraphy. July 14, 2025 Item #4 27 of 40 Paleontological Monitoring Report for the Ocean View Point Project 5.0–2 5.2 Paleontology The usage of Wilson’s (1972) subdivision scheme for the Santiago Formation in San Diego County has been adopted by many paleontologists over the past decades, even for localities that are located outside of his research area. While “member C” is well known for yielding important mammalian faunas (e.g., Walsh 1996; Zack et al. 2022), stand-alone research on marine invertebrates from “member B” is less numerous (e.g., Haug et al. 2013). Fossils are very rare from “member A,” consisting of unidentified bivalve impressions and leaf imprints (SDNHM records). At the Ocean View Point Project, the fossils recovered during monitoring were of invertebrate animals with shells. 5.2.1 Previous Work The first report documenting Eocene-age fossils in the region was by Copenhaver (1962) for mollusks collected during excavation work “near the little town of Vista…. for construction of a new highway through the area.” The important work by Givens and Kennedy (1976) remains the best source for shallow marine/lagoonal/estuarine mollusks from “member B” of the Santiago Formation. This locality is at a SR-78 road cut and includes the description of three new species of gastropods. A similar locality was collected across (the north side of) the highway, from which Squires and Saul (2002) described a new species of snail, Nerita kennedyi, in honor of George L. Kennedy, the former Senior Paleontologist with BFSA. 5.2.2 Invertebrate Fauna At least 29 species of marine invertebrates, consisting almost entirely of bivalve (19 species) and gastropod mollusks (10 species) were found at the Ocean View Point Project. The only other invertebrate fossil that was recovered was one scaphopod mollusk. The invertebrate species (clams and snails) are represented by internal and external molds preserved in sandstones and mudstones. 5.3 Paleoclimate SDSNH locs. 7923 and 7925 originate from shallow marine sandy bottoms subject to currents. Spindle-shaped gastropods, such as the Turritella uvasana specimens from SDSNH loc. 7925, are used as a tool in paleontology to analyze depositional settings on account that their shape may be preferentially oriented with current directions. For locality 7925, Turritella uvasana specimens did not indicate a preferential direction and seemed to be randomly oriented. The faunal collections from SDSNH loc. 7924 are indicative of a protected, soft-bottom estuarine habitat and deposition in a low-energy, offshore environment, a conclusion derived from the lithology of the locality. 5.4 Biochronology Givens and Kennedy (1976) and Squires and Saul (2002) concluded that fossil mollusks from “member B” of the Santiago Formation are indicative of the “Domengine” provincial July 14, 2025 Item #4 28 of 40 Paleontological Monitoring Report for the Ocean View Point Project 5.0–3 molluscan stage, which spans late-early to early-middle Eocene time. Walsh (1996), based upon mammalian remains collected from upper portions of “member B” strata in Oceanside and Carlsbad that conformably overlie mollusk-bearing strata, assigned an early Uintan North American Land Mammal Age (early-middle Eocene) to the unit. This assessment was supported by Prothero (2001) in a magnetic remanence study. The early Uintan spans approximately 44.2- to 47.5-million years ago (Speiger et al. 2020). July 14, 2025 Item #4 29 of 40 Paleontological Monitoring Report for the Ocean View Point Project 6.0–1 6.0 SIGNIFICANCE AND DISPOSITION OF THE FOSSIL RESOURCES Paleontological monitoring of grading and excavation activities during the construction of the Ocean View Point Project has resulted in the collection of a shallow marine molluscan fauna. The collection contributes to a more thorough understanding of the distribution of the marine depositional facies of the Santiago Formation in San Diego County and helps to better understand their geographic and stratigraphic distribution within the San Diego embayment during the early phase of local Eocene deposition. A rare specimen of the gastropod Velates was recovered, along with important examples of Turritella uvasana that may offer useful biochronological data. Fossils listed in Table 4.2–1 were carefully prepared and curated by the paleontological staff at BFSA and subsequently deposited into the paleontological collections of the SDSNH, which operates the SDNHM in Balboa Park, bearing SDSNH locs. 7923 to 7925, with species lot numbers 172599 to 172640. The specimens are thus available for future study or examination at any time by the general public, students, or professional paleontologists. July 14, 2025 Item #4 30 of 40 Paleontological Monitoring Report for the Ocean View Point Project 7.0–1 7.0 CERTIFICATION I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this paleontological report, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief and have been compiled in accordance with CEQA criteria. May 8, 2025 Todd A. Wirths, M.S., P.G. Date Principal Paleontologist California Professional Geologist No. 7588 July 14, 2025 Item #4 31 of 40 <:: Paleontological Monitoring Report for the Ocean View Point Project 8.0–1 8.0 REFERENCES City of Carlsbad. 2017. Carlsbad Tribal, Cultural, and Paleontological Resources Guidelines. Prepared for the City of Carlsbad, California, by ECORP Consulting, Inc. Copenhaver, G.C., Jr. 1962. A find of fossil mollusks. Gems & Minerals, no. 296, p. 44-45 (May). Eisenberg, L.I. 1983. Pleistocene marine terrace and Eocene geology, Encinitas and Rancho Santa Fe quadrangles, San Diego County, California. Unpublished master’s thesis, San Diego State University. Eisenberg, L.I., and Abbott, P.L. 1985. Eocene lithofacies and geologic history, northern San Diego County. In, Abbott, P.L., ed., On the manner of deposition of the Eocene strata in northern San Diego County. San Diego Association of Geologists, p. 19-36. Deméré, T.A., and Walsh, S.L. 2011. Paleontological resources – County of San Diego. Unpublished report prepared for the San Diego County Department of Public Works, San Diego, by the Department of Paleontology, San Diego Natural History Museum, San Diego. Revised from 1993. Givens, C.R., and Kennedy, M.P. 1976. Middle Eocene mollusks from northern San Diego County, California. Journal of Paleontology, 50(5): 954-975, figs. 1-2, pls. 1-4, tables 1- 2. Haug, C., Nyborg, T., and Vega, F.J. 2013. An exceptionally preserved upogebiid (Decapoda: Reptantia) from the Eocene of California. Boletín de la Sociedad Geológica Mexicana, v. 65, no. 2, p. 235-248. Kennedy, M.P., and Tan, S.S. 2007. Geologic Map of the Oceanside 30' x 60' Quadrangle, California. California Geological Survey, Regional Geologic Map Series 1:100,000 scale, map no. 2. Kummel, B., and Raup, D., eds. 1965. Handbook of paleontological techniques. W. H. Freeman and Company, San Francisco. Pp. i-xiii + 1-852, illustrated. Prothero, D.R. 2001. Magnetic stratigraphy of the middle Eocene Santiago Formation, San Diego and Orange Counties, California. In, Prothero, D.R., ed., Magnetic Stratigraphy of the Pacific Coast Cenozoic. SEPM (Society for Sedimentary Geology) Book 91, p. 107- 119. July 14, 2025 Item #4 32 of 40 Paleontological Monitoring Report for the Ocean View Point Project 8.0–2 Society of Vertebrate Paleontology. 2010. Standard procedures for the assessment and mitigation of adverse impacts to paleontological resources; by the SVP Impact Mitigation Guidelines Revision Committee: https://vertpaleo.org/wp- content/uploads/2021/01/SVP_Impact_Mitigation_Guidelines-1.pdf. Speiger, R.P., Pälike, H., Hollis, C.J., Hooker, J.J., and Ogg, J.G. 2020. The Paleogene Period. In, Gradstein, F.M., Ogg, J.G., Schmitz, M.D., and Ogg, G.H., eds., Geologic Time Scale 2020. Elsevier B.V., 2 vols., p. 1087-1140. Squires, R.L., and Saul, L.R. 2002. New information on Late Cretaceous, Paleocene, and Eocene neritid gastropods from the North American Pacific slope. The Veliger, 45(3): 177-192, figs. 1-40. Stephenson, R.A., Giffen, J.H., and Gibson, E.E. 2009. County of San Diego guidelines for determining significance [for] paleontological resources. Unpublished report (2007, revised in 2009) prepared by the San Diego County Land Use and Environment Group, Department of Planning and Land Use and Department of Public Works, San Diego. Pp. i-vi + 1-47, figs. 1-10, table 1. Tan, S.S., and Kennedy, M.P. 1996. Geologic maps of the northwestern part of San Diego County, California. California Department of Conservation, Division of Mines and Geology Open-File Report 96-02. Walsh, S.L. 1996. Middle Eocene mammal faunas of San Diego County, California. In Prothero, D.R., and Emry, R.J., eds., The terrestrial Eocene-Oligocene transition in North America. Cambridge University Press, Cambridge, UK. Pp. 75-119, figs. 1-7, tables 1-9. Weber, F.H., Jr. 1982. Recent slope failures, ancient landslides, and related geology of the north-central coastal area, San Diego County, California. California Department of Conservation, Division of Mines and Geology Open-File Report 82-12. Wilson, K.L. 1972. Eocene and related geology of a portion of the San Luis Rey and Encinitas Quadrangles, San Diego County, California. Unpublished master’s thesis, University of California, Riverside. Zack, S.P., Poust, A.W., and Wagner, H. 2022. Diegoaelurus, a new machaeroidine (Oxyaenidae) from the Santiago Formation (late Uintan) of southern California and the relationships of Machaeroidinae, the oldest group of sabertooth mammals. PeerJ, 10:e13032. July 14, 2025 Item #4 33 of 40 Paleontological Monitoring Report for the Ocean View Point Project APPENDIX A Paleontological Mitigation Measures July 14, 2025 Item #4 34 of 40 PROJECT NAME: OCEAN VIEW POINT PROJECT NUMBER: GPA 15-02/ZC 15-03/LCPA 15-05/CT 15-07/PUD 15-15/CDP 15-53/HDP 15-03/HMP 15--05 (OEV15043) 4' ... C Q. '> C .g I-.. OI C c .E C "' C s -c E 0 ll t .., B t: C t: ·c Ci i C"' .. MITIGATION MEASURE 0 0 "' 0 1:'a E .&: �§ Cl/ � � Q "' t.: CUl-10 No testing, invasive or non-invasive, shall be permitted on any recovered Project PLN tribal cultural resources without the written permission of the San Luis Rey Band of Mission Indians. CUL-11 Prior to the release of the grading bond, a monitoring report and/or Project PLN evaluation report, if appropriate, which describes the results, analysis and conclusions of the monitoring program shall be submitted by the archaeologist, along with the Luiseno Native American monitor's notes and comments. to t'he City of Carlsbad for approval. Said report shall be subject to confidentiality as an exception to the Public Records Act and will not be available for public distribution. PALE0-1. Prior to any grading on any portion of the project site, a qualified Project PLN paleontologist shall be retained by the City to prepare a Monitoring Plan. A qualified paleontologist is, an individual with an MS or PhD in paleontology or geology who is familiar with paleontological procedures and techniques. No Grading Permits shall be issued until the monitoring plan has been approved by the City Planner. PALE0-2 A qualified paleontological monitor shall be present at a pre-grading Project PLN conference with the developer, grading contractor, and the environmental review coordinator. The purpose or this meeting will be to consult and coordinate the role of the paleontologist in the grading of the site. A qualified paleontolog:ist is an individual with adequate knowledge and experience with fossilized remains likely to be present to identify them in the field and is adequately experienced to remove the resources for further study. I PALE0-3 A paleontologist or designate shall be present during those relative phases of Project PLN grading as determined at the pre-grading conference. The monitor shall have the authority to temporarily direct, divert, or halt grading to allow recovery of fossil remains, At the discretion of the monitor, recovery may include washing and picking of soil samples for micro-vertebrate bone and teeth. The developer shall authorize the deposit of any resources found on the project site in an institution staffed by qualified paleontologists as may be Mitigation Monitoring and Reporting Program Page 14 of 15 July 14, 2025 Item #4 35 of 40 -------~-- ... "' PROJECT NAME: OCEAN VIEW POINT PROJECT NUMBER: GPA 15-02/ZC 15-03/LCPA 15-05/CT 15-07/PUD 15-15/CDP 15-53/HDP 15-03/HMP 15-05 (DEV15043} Ill "' C a.. C 0 � ... "' ".j:l ... OD C ii: C C Ill C C ·.::: ·.::: E 0 a: e -E _.g � t: C ·- "' == i;:: _gi "' C 5 � 'i: a. E MITIGATION MEASURE 0 0 QI E QI � �c "' >-a:: determined by the City Planner. The contractor shall be aware of the random nature of fossil occurrences and the possibility of a discovery of such scientific and/or educational importance which might warrant a long-term salvage operation or preservation. Any conflicts regarding the role of the paleontologist and/or recovery times shall be resolved by the City Planner. PALE0-4 If fossils are discovered, the paleontologist (or paleontological monitor) shall Project PLN recover them. In most cases, this fossil salvage can be completed in a short period of time. However, some fossil specimens (such as complete large mammal skeleton) may require an extended salvage period. In these instances, the paleontologist (or paleontological monitor) shall be allowed to temporarily direct, divert, or halt grading to allow recovery of fossil remains in a timely manner. Because of the potential for the recovery of small fossil remains, such as isolated mammal teeth, it may be necessary in certain instances, to set up a screen-washing operation on the site. PALE0-5 Fossil remains collected during the monitoring and salvage portion of the Project PLN mitigation program shall be cleaned repaired, sorted, and cataloged. PALE0-6 Prepared fossils, along with copies of all pertinent field notes, photos, and Project PLN maps, shall either be deposited (as a donation) in a scientific institution with permanent paleontological collections such as the San Diego Natural History Museum or retained by the City and displayed to the public at an appropriate location such as a library or City Hall. PALE0-7 Prior to occupancy of any buildings, a paleontological monitoring report shall Project PLN be submitted to the City Planner and the Carlsbad Historic Preservation Commission. This report shall describe all the materials recovered and provide a tabulation of the number of hours spent by paleontological monitors on the site. Mitigation Monitoring and Reporting Program Page 15 of 15 July 14, 2025 Item #4 36 of 40 h ta Paleontological Monitoring Report for the Ocean View Point Project APPENDIX B Museum Acceptance Letter July 14, 2025 Item #4 37 of 40 6 May 2025 Mr. Todd A. Wirths BFSA Environmental Services 14010 Poway Road Poway, CA 92064 RE: Acceptance of the Ocean View Point Fossils Dear Mr. Wirths, This letter is to acknowledge the receipt of the fossils salvaged during earthwork operations at the Ocean View Point Project in the City of Carlsbad, San Diego County, California. It is my understanding that the landowner (Shea Homes Limited Partnership) is donating the fossils to the San Diego Natural History Museum. As noted in documents submitted with the fossils, fieldwork resulted in the discovery of three primary collection sites from Pleistocene sedimentary deposits of the Bay Point Formation. This site was given the SDSNH locality numbers 7923 - 7925. SDSNH specimen/species lot numbers for this collection are 172599 - 172640. These specimens represent invertebrate and plant fossils. The recovered specimens represent an important paleontological resource and when curated into the research collections of the Museum, the fossils will be made available to students and scientists for further study. In accepting the Ocean View Point paleontological collections, the Museum makes a commitment to curate and store the fossils in perpetuity for the public good. Sincerely, Kesler A. Randall Collections Manager, Fossil Vertebrates Department of Paleontology July 14, 2025 Item #4 38 of 40thenatl SAN DIEGO NATURAL HISTORY MUSEUM P.O. BOX 121390, SAN DIEGO, CA 92112-1390 SDNAT.ORG P 619.232.3821 F 619.232.0248 Paleontological Monitoring Report for the Ocean View Point Project APPENDIX C Fossil Discovery Notice July 14, 2025 Item #4 39 of 40 14010 Poway Road, Suite A, Poway, California 92064; Phone 858-484-0915 October 2, 2024 Tim Stanton Public Works Inspector Construction Management & Inspection City of Carlsbad 1635 Faraday Avenue Carlsbad, California 92008 Subject: Notice of Paleontological Discovery, Ocean View Point Project, Carlsbad, California (GPA 15-02 / ZC 15-03 / LCPA 15-05 / CT 15-07 / PUD 15-15 / CDP 15-53 / HDP 15-03 / HMP 15-05 [DEV15043]) Dear Mr. Stanton: This letter is to inform the City of the discovery of Eocene-aged fossils during grading activities at the Ocean View Point Project on October 1, 2024. The fossils recovered thus far are all bivalves (clams) that are approximately 46 million years old from the Santiago Formation. More fossils are likely to be recovered as excavation activities continue. The discovery is considered significant and will need to be discussed in full in the paleontological monitoring report for the project as is required by the project’s mitigation monitoring program. The fossils will need to be prepared, identified, catalogued, numbered, and labeled before being archived at the San Diego Natural History Museum. The report will be prepared for review and approval by the City of Carlsbad. We will continue to monitor full-time and salvage fossils as appropriate, under mitigation measures PALEO-1 through PALEO-7 for the project. No changes to the current monitoring program are anticipated. If you have any questions, please contact us and we can discuss any concerns you might have. Sincerely, Todd Wirths, M.S., P.G. 7588 Principal Paleontologist, California Professional Geologist Cc: Jordan Selva, Shea Homes July 14, 2025 Item #4 40 of 40 BFSA Environmental Services Archaeology/History/Paleontology/Biology A Perennial Company Ocean View Point Paleontological Report Mike Strong, Assistant Director of Community Development July 14, 2025 rlsbad Country Q Day School Window Spaces C) 0 Pacific View Apartment H8ffi!'a\ View Point 0t,,wa'I Re~ HOIVIES {c ity of Carlsbad