HomeMy WebLinkAboutAppendix F.2 - Paleontology Addendum Letter
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SAN DIEGO | OAKLAND | TUCSON
June 5, 2023
Ms. Janice Kluth, AICP City of Chula Vista
Development Services Department
276 Fourth Avenue
Chula Vista, CA 91910
Reference: Nakano Project - Addendum to Paleontological Resources Inventory Report for the Nakano Project
(RECON Number 3396-1)
Dear Ms. Kluth:
This letter serves as an addendum to the Paleontological Resources Inventory Report for the Nakano Project, City of
Chula Vista, San Diego County, California dated February 2022, prepared by Dudek. Since acceptance of the report,
the applicant has incorporated proposed off-site trail improvements, in addition to the proposed on-site trails already
evaluated as part of the Dudek report. The purpose of this addendum letter is to describe this additional project component to complete the February 2022 Dudek report. This addendum letter together with the Dudek February
2022 report, completes the Paleontological Resources Inventory Report for the project.
The project has been revised to include off-site trail improvements north of the project parcel within the Otay Valley Regional Park on a property known as the Davies Property (Assessor’s Parcel Number 02-41-346-02), as depicted on
Figure 1. In addition to the off-site trail improvements already evaluated in the Dudek report, off-site trail improvements would consist of placement of decomposed granite within an 8-foot-wide trail alignment. Peeler pole
fencing would be installed on one side of the trail. The proposed off-site trails would not require any grading as the trails are planned to follow the existing disturbed informal trail alignments. Disturbance within the proposed off-site trail locations is documented in historic aerial photos (Converse Consultants 2022). Disturbance of the underlying
geologic formations in this off-site area would not occur as ground disturbance would be limited to digging holes for fence posts. Furthermore, the area is underlain by young alluvial floodplain deposits (Qya), which have low
paleontological sensitivity, as detailed in Table 2 and Figure 2 of the Dudek February 2022 report. Although paleontological monitoring in the off-site trail improvement area would not be needed due to the low
paleontological sensitivity of the underlying formation, the overall project site requires paleontological monitoring as described in the Dudek report. The required paleontological resources mitigation would allow for the paleontological monitor to direct where monitoring is needed within the site based on the depth of grading in relation to underlying
geological formations. A monitoring exhibit would be provided prior to grading that would define specific monitoring locations. Therefore, no changes are needed to the mitigation measures identified in the Dudek report.
Ms. Janice Kluth, AICP
Page 2
June 5, 2023
This addendum letter updates and completes the Dudek Paleontological Resources report. Please call me at
(619) 308-9333 ext. 123 if you have any questions.
Sincerely,
Jennifer Campos
Environmental Project Director
JYC:jg
References Cited
Dudek
2022 Paleontological Resources Inventory Report for the Nakano Project, City of Chula Vista, San Diego County,
California. February.
Converse Consultants
2022 Phase I Environmental Site Assessment Report Assessor’s Parcel Number (APN) 624 071 02 00 Chula Vista,
California. March 10.
FI GURE 1Project Impacts with Trail Improvem ents
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G O LDEN S K Y W A Y
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Image Source: Ne arMap (flown January 2023)
0 300Feet [Parcel Boundar y
Impact L im its
Trail Im provement
M:\JOBS\3396-1\common_gis\Reports\Arc_Paleo\Fig1.mxd 06/02/2023 bma