2025-023 - Addendum to Transit Zoning Code Environmental Impact Report

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• Long-term cumulative development occurring pursuant to the Transit Zoning Code could cause a substantial adverse change in the significance of an archaeological resource or disturb human remains. (Impact 4.4-1: Less Than Significant with mitigation) • Long-term cumulative development occurring pursuant to the Transit Zoning Code has the potential to directly or indirectly destroy a unique paleontological resource or unique geologic feature. (Impact 4.4-2: Less Than Significant with mitigation) • The adoption of the Transit Zoning Code (SD 84A and SD 84B) would result in substantial adverse change in the significance of a historical resource as defined in Section 15064.5 of the CEQA Guidelines. (Impact 4.4-3: Significant and Unavoidable and no feasible mitigation) TZC EIR Mitigation Measures MM4.4-1(a) Prior to any earth-disturbing activities (e.g., excavation, trenching, grading) that could encounter undisturbed soils, the project applicant shall retain an archaeologist who meets the Secretary of the Interior's Professional Qualifications Standards for Archaeology to determine if the project could result in a substantial adverse change in the significance of an archaeological resource pursuant to Section 15064.5 of the CEQA Guidelines or disturb human remains. The investigation shall include, as determined appropriate by the archaeologist and the City of Santa Ana, an updated records search of the South Central Coastal Information Center (SCCIC) of the California Historical Resources Information System (CHRIS), updated Native American consultation, and a pedestrian survey of the area proposed for development. The results of the investigation shall be documented in a technical report or memorandum that identifies and evaluates any archaeological resources within the development area and includes recommendations and methods for eliminating or avoiding impacts on archaeological resources or human remains. The measures shall include, as appropriate, subsurface testing of archaeological resources and/or construction monitoring by a qualified professional and, if necessary, appropriate Native American monitors identified by the applicable tribe (e.g., the Gabrielino Tongva Nation) and/or the Native American Heritage Commission. The methods shall also include procedures for the unanticipated discovery of human remains, which shall be in accordance with Section 5097.98 of the State Public Resources Code and Section 7050.5 of California's Health and Safety Code. The technical report or memorandum shall be submitted to the City of Santa Ana for approval. As determined necessary by the City, environmental documentation (e.g., CEQA documentation) prepared for future development within the project site shall reference or incorporate the findings and recommendations of the technical report or memorandum. The project applicant shall be responsible for implementing methods for eliminating or avoiding impacts on archaeological resources identified in the technical report or memorandum. Projects that would not encounter undisturbed soils and would therefore not be required to retain an archaeologist shall demonstrate non-disturbance to the City through the appropriate construction plans or geotechnical studies prior to any earth-disturbing activities. Projects that would include any earth disturbance (disturbed or undisturbed soils) shall comply with MM4.4-2(b). (Impact 4.4-1) MM4.4-1(b) If evidence of an archaeological site or other suspected historical resource as defined by CEQA Guidelines Section 15064.5, including darkened soil representing past human activity ("midden"), that could conceal material remains (e_g., worked stone, fired clay vessels, faunal bone, hearths, storage pits, or burials) are discovered during any project- related earth-disturbing activities (including projects that would not encounter undisturbed soils), all earth-disturbing activity within 100 feet of the find shall be halted and the City of Santa Ana shall be notified. The project applicant shall retain an archaeologist who meets the Secretary of the Interior's Professional Qualifications Standards for Archaeology to assess the January 2025 28 Environmental Analysis Resolution No. 2025-023 Page 36 of 65