HomeMy WebLinkAboutSDP 2023-0014; CARLSBAD VILLAGE MIXED-USE - SB 330; PALEONTOLOGY STUDY - MAY 23, 2023; 2023-05-23PALEONTOLOGICAL ASSESSMENT FOR
THE 945-1065 CARLSBAD VILLAGE DRIVE
PROJECT
CARLSBAD, SAN DIEGO COUNTY, CALIFORNIA
APNs 203-320-53, -54, -55, and -56
City:
City of Carlsbad Planning Department 1635 Faraday Avenue
Carlsbad, California 92008
Preparer:
BFSA Environmental Services,
a Perennial Company
14010 Poway Road, Suite A
Poway, California 92064
Project Proponent:
GRT Carlsbad Village, LLC 2001 Wilshire Boulevard, Suite 420 Santa Monica, California 90403 February 23, 2023; Revised May 23, 2023
Paleontological Assessment for 945-1065 Carlsbad Village Drive _____________________________________________________________________________________________________________________ Paleontological Database Information
Author: Todd A. Wirths, M.S., Senior Paleontologist, California Professional Geologist No. 7588
Consulting Firm: BFSA Environmental Services, a Perennial Company 14010 Poway Road, Suite A Poway, California 92064 (858) 679-8218 Report Date: February 27, 2023; Revised May 23, 2023 Report Title: Paleontological Assessment for the 945-1065 Carlsbad Village Drive Project, Carlsbad, San Diego County, California Prepared for: GRT Carlsbad Village, LLC 2001 Wilshire Boulevard, Suite 420 Santa Monica, California 90403
Submitted to: City of Carlsbad
Planning Department
1635 Faraday Avenue Carlsbad, California 92008 USGS Quadrangle: Section 6, Township 12 South, Range 4 West, San Luis Rey,
California (7.5-minute) Assessor’s Parcel Numbers: 203-320-53, -54, -55, and -56
Key Words: Paleontological assessment; Pleistocene old paralic deposits; high paleontological resource sensitivity; monitoring recommended.
Paleontological Assessment for 945-1065 Carlsbad Village Drive _____________________________________________________________________________________________________________________ Table of Contents
Section Page
1.0 INTRODUCTION AND LOCATION .......................................................................1
2.0 REGULATORY SETTING ........................................................................................1
3.0 GEOLOGY .................................................................................................................4
4.0 PALEONTOLOGICAL RESOURCES ......................................................................4
4.1 Definition .............................................................................................................4
4.2 Fossil Locality Records Search ............................................................................6
5.0 PALEONTOLOGICAL SENSITIVITY ....................................................................6
5.1 Overview ..............................................................................................................6
5.2 Professional Standards .........................................................................................7
5.3 City Assessment of Paleontological Sensitivity ..................................................7
6.0 CONCLUSION AND RECOMMENDATIONS .......................................................7
7.0 CERTIFICATION ......................................................................................................8
8.0 REFERENCES ...........................................................................................................8
Appendices
Appendix A – Qualifications of Key Personnel
List of Figures
Figure Page
Figure 1 General Location Map .................................................................................2
Figure 2 Project Location Map ...................................................................................3
Figure 3 Geologic Map...............................................................................................5
Paleontological Assessment for 945-1065 Carlsbad Village Drive _____________________________________________________________________________________________________________________
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1.0 INTRODUCTION AND LOCATION
A paleontological resource assessment has been completed for the 945-1065 Carlsbad
Village Drive Project, located just west of Interstate 5, in the northwestern area of the city of
Carlsbad, San Diego County, California (Figures 1 and 2). The project consists of four parcels
(Assessor’s Parcel Numbers [APNs] 203-320-53, -54, -55, and -56) and is situated within the
Section 6 area of Township 12 South, Range 4 West on the U.S. Geological Survey (USGS) San
Luis Rey, California topographic quadrangle (7.5-minute) map (see Figure 2). The project
applicant is proposing to improve the parcels as a mixed-use development. Currently, the project
parcels are completely developed as a shopping strip mall called Carlsbad Village Plaza.
The City of Carlsbad has required the preparation of a paleontological assessment to
evaluate the project’s potential to yield paleontological resources. The paleontological assessment
of the project included a review of paleontological literature and fossil locality records in the area,
a review of the underlying geology, and recommendations to monitor for impacts to potential
paleontological resources, if necessary.
2.0 REGULATORY SETTING
The California Environmental Quality Act (CEQA), which is patterned after the National
Environmental Policy Act, is the overriding environmental regulation that sets the requirements
for protecting California’s paleontological resources. CEQA mandates that governing permitting
agencies (lead agencies) set their own guidelines for the protection of nonrenewable
paleontological resources under their jurisdiction.
Under “Guidelines for Implementation of the California Environmental Quality Act,” as
amended in December 2018 (California Code of Regulations [CCR] Title 14, Division 6, Chapter
3, Sections 15000 et seq.), procedures define the types of activities, persons, and public agencies
required to comply with CEQA. Section 15063 of the CCR provides a process by which a lead
agency may review a project’s potential impact to the environment, whether the impacts are
significant, and provide recommendations, if necessary.
In CEQA’s Environmental Checklist Form, one of the questions to answer is, “Would the
project directly or indirectly destroy a unique paleontological resource or site or unique geologic
feature?” (Appendix G, Section VII, Part f). This is to ensure compliance with California Public
Resources Code Section 5097.5, the law that protects nonrenewable resources including fossils,
which is paraphrased below:
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a) A person shall not knowingly and willfully excavate upon, or remove, destroy,
injure or deface any historic or prehistoric ruins, burial grounds, archaeological
or vertebrate paleontological site, including fossilized footprints, inscriptions
made by human agency, rock art, or any other archaeological, paleontological
or historical feature, situated on public lands, except with the express
permission of the public agency having jurisdiction over such lands.
b) As used in this section, “public lands” means lands owned by, or under the
jurisdiction of, the state, or any city, county, district, authority, or public
corporation, or any agency thereof.
c) A violation of this section is a misdemeanor.
3.0 GEOLOGY
Geomorphically, the project property occupies an elevated terrace at an elevation of
approximately 60 feet (approximately 18 meters) above mean sea level. Geologically, as shown
on Figure 3 after Kennedy and Tan (2007), multiple marine terraces in the project area’s terrace
complex have truncated the older, underlying Eocene-aged Santiago Formation (brown areas
labeled as “Tsa” on Figure 3), and refer to the terrace sediments, including their overlying alluvial
and colluvial deposits, as Pleistocene “old paralic deposits” (symbolized as “Qop2-4” and “Qop6-
7”). As shown on Figure 3, the project is mapped as underlain by younger old paralic deposits
(Qop6-7), where Kennedy and Tan (2007) grouped deposits of the “Bird Rock terrace” with
deposits of the older (higher and slightly farther inland) “Nestor terrace” (~120,000 years old). 4.0 PALEONTOLOGICAL RESOURCES
4.1 Definition
Paleontological resources are the remains of prehistoric life that have been preserved in
geologic strata. These remains are called fossils and include bones, shells, teeth, and plant remains
(including their impressions, casts, and molds) in the sedimentary matrix, as well as trace fossils
such as footprints and burrows. Fossils are considered older than 5,000 years of age (Society of
Vertebrate Paleontology 2010) but may include younger remains (subfossils), for example, when
viewed in the context of local extinction of the organism or habitat. Fossils are considered a
nonrenewable resource under state and local guidelines (see Sections 2.0 and 5.0 of this report).
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4.2 Fossil Locality Records Search
A literature search and an examination of museum and university fossil collections and/or
locality records of the San Diego Society of Natural History (SDSNH) revealed a number of nearby
fossil localities assigned to upper Pleistocene terrace and estuarine deposits, all located north of
the project along the northern edge of Buena Vista Lagoon. The closest is SDSNH Locality 4007,
located about one mile to the northeast, and yielded a partial mammoth tusk. Several additional
SDSNH localities, rich with late Pleistocene marine invertebrate fossils, were recovered at the
Pacific Coast Plaza project that borders State Route 78 in Oceanside (SDSNH locs. 4024 through
4033). These localities represent a diverse assemblage of mollusks, shark teeth, and unidentified
mammal remains (Deméré and Riney 2000), and represent marine high-stand conditions of
approximately 300,000 to 400,000 years ago (Kennedy and Browne 2007). The closest known
published locality of late Pleistocene invertebrate fossils was reported by Peska (1976), who
reported eight species of bivalves and one gastropod species approximately 1.5 miles northeast of
the project, near where El Camino Real crosses Buena Vista Creek. A fossil whale rib was
discovered about 25 feet deep at the Oceanside Beachfront Resort project, approximately three
miles up the coast (Wirths 2020). The nearest known fossil locality from the often-fossiliferous
Santiago Formation is at Robertson Ranch West, about two miles east/southeast of the project,
yielding a shallow marine molluscan fauna (Kennedy et al. 2017).
5.0 PALEONTOLOGICAL SENSITIVITY
5.1 Overview
The degree of paleontological sensitivity of any particular area is based on a number of
factors, including the documented presence of fossiliferous resources on a site or in nearby areas,
the presence of documented fossils within a particular geologic formation or lithostratigraphic unit,
and whether or not the original depositional environment of the sediments is one which might have
been conducive to the accumulation of organic remains that may have become fossilized over time.
Holocene alluvium is generally considered to be geologically too young to contain significant
nonrenewable paleontological resources (i.e., fossils) and thus is typically assigned a low
paleontological sensitivity. Pleistocene (more than 11,700 years old) alluvial and paralic deposits
are known to yield significant molluscan faunas and important terrestrial vertebrate fossils, such
as extinct mammoths, mastodons, and giant ground sloths; extinct species of horse, bison, and
camel; saber-toothed cats, and others (e.g., Deméré and Riney 2000). These Pleistocene sediments
are thus accorded a high paleontological resource sensitivity. The Santiago Formation, consisting
of marine and non-marine sedimentary rocks, is fossiliferous, and is known to yield a diverse fauna
of vertebrate fossils such as long-extinct terrestrial reptiles and mammals, and marine invertebrate
fossils such as bivalve and gastropod mollusks, and also has a high paleontological sensitivity
(Deméré and Walsh 1993; Stephenson et al. 2009).
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5.2 Professional Standards
The Society of Vertebrate Paleontology (2010) has drafted guidelines that include four
categories of paleontological sensitivity for geologic units (formations) that might be impacted by
a proposed project, as listed below:
• High Potential: Rock units from which vertebrate or significant invertebrate, plant, or
trace fossils have been recovered.
• Undetermined Potential: Rock units for which little information is available
concerning their paleontological content, geologic age, and depositional environment,
and that further study is needed to determine the potential of the rock unit.
• Low Potential: Rock units that are poorly represented by fossil specimens in
institutional collections or based on a general scientific consensus that only preserve
fossils in rare circumstances.
• No Potential: Rock units that have no potential to contain significant paleontological
resources, such as high-grade metamorphic rocks and plutonic igneous rocks.
Using these criteria, based on the geologic formations at and near the project, both the
Pleistocene old paralic deposits and the Eocene Santiago Formation can be considered to have a
high potential to yield significant paleontological resources.
5.3 City Assessment of Paleontological Sensitivity
The City of Carlsbad has assigned sensitivity ratings of paleontological potential to
geologic formations within the city limits (City of Carlsbad 2017). The geologic units mapped
within the project, the Santiago Formation and Pleistocene old paralic deposits, are assigned a high
paleontological sensitivity. Geologic units assigned a high sensitivity are said by the City of
Carlsbad (2017) to “…have the highest potential to produce unique invertebrate fossil assemblages
or unique vertebrate fossil remains.”
6.0 CONCLUSIONS AND RECOMMENDATIONS
Because of the potential to encounter buried significant paleontological resources, the
preparation of a paleontological monitoring plan (PMP) is recommended if earth disturbance
activities are planned, in accordance with Section 10.4.2 of the City’s paleontological resource
guidelines (City of Carlsbad 2017:105). The PMP should be submitted and approved by the City
of Carlsbad as a standard condition of approval pursuant to the guidelines prior to the approval of
grading permits by the City of Carlsbad’s Planning Department. In a PMP, the City specifies the
following information, “as applicable and appropriate”:
• The level of monitoring (spot checks, part-time, or full-time), protocols and
authorization for work stoppages, and safety procedures;
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The need for contractor awareness training for all earthmoving personnel for any
projects where a monitor will not be present full time;
A research design listing the research questions and the data requirements for those
questions;
The level and type of assistance from the contractor needed by the paleontologist to
take bulk samples and place them into a safe area for processing;
The methods for fossil collection, fossil preparation, fossil identification, conducting
stratigraphic profiles, and curation;
The types of progress reports that will be provided to the project proponent and the
City (weekly or monthly);
The schedule for reporting;
A recommendation for updating the paleontology sensitivity model, which takes into
consideration the presence or absence of paleontological resources, the amount of
ground disturbance, and the potential for future discoveries;
The identity of the financially responsible party. 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 23, 2023
Todd A. Wirths Date
Senior Paleontologist
California Professional Geologist No. 7588 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.
Deméré, T.A., and Walsh, S.L. 1993. 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. Pp. i-iii
+ 1-68, figs. 1-3, 8 maps.
Paleontological Assessment for 945-1065 Carlsbad Village Drive _____________________________________________________________________________________________________________________
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Deméré, T.A., and Riney, B.O. 2000. Paleoenvironments, paleoecology, and molluscan
paleontology of a late Pleistocene bay, Oceanside, San Diego County, California. Western
Society of Malacologists, Annual Report, 32: 13-14.
Kennedy, G.L., and Browne, I.D. 2007. Paleontology and geochronology of the middle and upper
Pleistocene marine record in the downtown San Diego area, San Diego County, southern
California. Western Society of Malacologists, Annual Report, 36: 13-34, fig. 1, tables 1-
2.
Kennedy, G.L., Wirths, T.A., and Rugh, N.S. 2017. Paleontological Monitoring Report,
Robertson Ranch West, Carlsbad, San Diego County, California. Unpublished consulting
report for Toll Brothers, Inc., Orange, California, by Brian F. Smith and Associates, Inc.,
Poway, California.
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.
Peska, F.J. 1976. A day’s digging in San Diego County. Paleontological News; Bulletin of the
Southern California Paleontological Society, vol. 8, no. 5, 6, and 7 (July).
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. Electronic document, https://vertpaleo.org/wp-
content/uploads/2021/01/SVP_Impact_Mitigation_Guidelines-1.pdf, accessed February 9,
2023.
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) 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.
Wirths, T.A. 2020. Paleontological Monitoring Report for the Oceanside Beachfront Resort
Project, Oceanside, California. Unpublished paleontological monitoring report prepared
for S.D. Malkin Properties, San Diego, California, by Brian F. Smith and Associates, Inc.,
Poway, California.
Paleontological Assessment for 945-1065 Carlsbad Village Drive _____________________________________________________________________________________________________________________
APPENDIX A
Qualifications of Key Personnel
Todd A. Wirths, MS, PG No. 7588
Senior Paleontologist
BFSA Environmental Services, A Perennial Company
14010 Poway Road Suite A
Phone: (858) 679-8218 Fax: (858) 679-9896 E-Mail: twirths@bfsa.perennialenv.com
Education
Master of Science, Geological Sciences, San Diego State University, California 1995
Bachelor of Arts, Earth Sciences, University of California, Santa Cruz 1992
Professional Certifications
California Professional Geologist #7588, 2003
Riverside County Approved Paleontologist
San Diego County Qualified Paleontologist
Orange County Certified Paleontologist
OSHA HAZWOPER 40-hour trained; current 8-hour annual refresher
Professional Memberships
Board member, San Diego Geological Society
San Diego Association of Geologists; past President (2012) and Vice President (2011)
South Coast Geological Society
Southern California Paleontological Society
Experience
Mr. Wirths has more than a dozen years of professional experience as a senior-level paleontologist
throughout southern California. He is also a certified California Professional Geologist. At BFSA, Mr.
Wirths conducts on-site paleontological monitoring, trains and supervises junior staff, and performs all
research and reporting duties for locations throughout Los Angeles, Ventura, San Bernardino, Riverside,
Orange, San Diego, and Imperial Counties. Mr. Wirths was formerly a senior project manager
conducting environmental investigations and remediation projects for petroleum hydrocarbon-
impacted sites across southern California.
Selected Recent Reports
2019 Paleontological Assessment for the 10575 Foothill Boulevard Project, City of Rancho Cucamonga,
San Bernardino County, California. Prepared for T&B Planning, Inc. Report on file at Brian F.
Smith and Associates, Inc., Poway, California.
2019 Paleontological Assessment for the MorningStar Marguerite Project, Mission Viejo, Orange
County, California. Prepared for T&B Planning. Report on file at Brian F. Smith and Associates,
Inc., Poway, California.
BFSA Environmental Services, A Perennial Company, 2
2019 Paleontological Monitoring Report for the Nimitz Crossing Project, City of San Diego. Prepared
for Voltaire 24, LP. Report on file at Brian F. Smith and Associates, Inc., Poway, California.
2019 Paleontological Resource Impact Mitigation Program (PRIMP) for the Jack Rabbit Trail Logistics
Center Project, City of Beaumont, Riverside County, California. Prepared for JRT BP 1, LLC.
Report on file at Brian F. Smith and Associates, Inc., Poway, California.
2020 Paleontological Monitoring Report for the Oceanside Beachfront Resort Project, Oceanside, San
California. Prepared for S.D. Malkin Properties. Report on file at Brian F. Smith and Associates,
Inc., Poway, California.
2020 Paleontological Resource Impact Mitigation Program for the Nakase Project, Lake Forest, Orange
County, San California. Prepared for Glenn Lukos Associates, Inc. Report on file at Brian F.
Smith and Associates, Inc., Poway, California.
2020 Paleontological Resource Impact Mitigation Program for the Sunset Crossroads Project, Banning,
Riverside County. Prepared for NP Banning Industrial, LLC. Report on file at Brian F. Smith and
Associates, Inc., Poway, California.
2020 Paleontological Assessment for the Ortega Plaza Project, Lake Elsinore, Riverside County.
Prepared for Empire Design Group. Report on file at Brian F. Smith and Associates, Inc.,
Poway, California.
2020 Paleontological Resource Record Search Update for the Green River Ranch III Project, Green River
Ranch Specific Plan SP00-001, City of Corona, California. Prepared for Western Realco. Report
on file at Brian F. Smith and Associates, Inc., Poway, California.
2020 Paleontological Assessment for the Cypress/Slover Industrial Center Project, City of Fontana, San
Bernardino County, California. Prepared for T&B Planning, Inc. Report on file at Brian F. Smith
and Associates, Inc., Poway, California.
2020 Paleontological Monitoring Report for the Imperial Landfill Expansion Project (Phase VI,
Segment C-2), Imperial County, California. Prepared for Republic Services, Inc. Report on file at
Brian F. Smith and Associates, Inc., Poway, California.
2021 Paleontological Assessment for the Manitou Court Logistics Center Project, City of Jurupa Valley,
Riverside County, California. Prepared for Link Industrial. Report on file at Brian F. Smith and
Associates, Inc., Poway, California.
2021 Paleontological Resource Impact Mitigation Program for the Del Oro (Tract 36852) Project,
Menifee, Riverside County. Prepared for D.R. Horton. Report on file at Brian F. Smith and
Associates, Inc., Poway, California.
2021 Paleontological Assessment for the Alessandro Corporate Center Project (Planning Case PR-2020-
000519), City of Riverside, Riverside County, California. Prepared for OZI Alessandro, LLC.
Report on file at Brian F. Smith and Associates, Inc., Poway, California.
2021 Paleontological Monitoring Report for the Boardwalk Project, La Jolla, City of San Diego.
Prepared for Project Management Advisors, Inc. Report on file at Brian F. Smith and
Associates, Inc., Poway, California.