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City of Pleasanton—Hidden Canyon Residences and Preserve Draft EIR Cultural Resources and Tribal Cultural Resources FirstCarbon Solutions 3.4-29 https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-04 Cultural-Tribal Cultural Resources.docx Section 5024.1 was initiated on September 18, 2025, and consultation letters were sent to each Tribe on the NAHC consultation list. To date, no responses requesting to consult have been received. As such, Tribal consultation efforts failed to identify additional significant TCRs in the project site. Should any undiscovered TCRs be encountered during project construction, implementation of MM CUL-2and COA CUL-3 would ensure that undiscovered TCRs are not adversely affected by project- related construction activities. As such, construction-related impacts would be less than significant with the implementation of mitigation. Operation Impacts related to a project’s potential to cause a substantial adverse change in the significance of a State-listed or eligible TCRs are limited to construction impacts. No respective operational impacts would occur. Level of Significance Before Mitigation Potentially significant impact. Mitigation Measures Implementation of MM CUL-2 and COA CUL-3 Level of Significance After Mitigation Less than significant impact. 3.4.7 - Cumulative Impacts Cumulative Analysis The geographic scope for the cumulative analysis is described further below for each type of resource. This analysis evaluates whether the impacts of the proposed project, together with the impacts of other cumulative development, could result in a cumulatively significant impact related to historical resources, archaeological resources, human remains, and TCRs. This analysis then considers whether the incremental contribution of the impacts associated with the implementation of the proposed project would be significant. Both conditions must apply for the proposed project’s cumulative effects to rise to the level of significance. If there is no impact associated with respect to a particular CEQA threshold, discussion of cumulative impacts is not required. Accordingly, cumulative discussion is limited to the potential impacts as discussed below. Historical Resources The relevant geographic scope for potential cumulative impacts to historic, built environment resources is the land within the City’s municipal boundaries. This is because the City provides the smallest geographic boundary of potential significance when a historic property is evaluated at the local, State, or federal level. The cumulative setting includes existing industrial, commercial and residential uses. Recorded historic resources were identified in the records search; however, the literature review and pedestrian survey of the project site yielded negative results, through the evaluation of the single-family properties, for historic resources. With respect to the cumulative projects, these cumulative projects have the potential to result in impacts to historic resources. The