14 ATTACHMENT 6 - Appendix A - E

City of Pleasanton–Spotorno Ranch Reduced Development Project Initial Study/Consistency Checklist Environmental Checklist FirstCarbon Solutions 75 https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480021/Consistency Checklist/21480021 Spotorno Ranch Consistency Checklist ScreenCheck.docx 1998 HVSP FEIR and would not result in any peculiar effects or any new or more severe impacts beyond what was previously analyzed in the 1998 HVSP FEIR. c) Sensitive Receptors Would the project: Expose sensitive receptors to substantial pollutant concentrations? The 1998 HVSP FEIR includes “exposure of sensitive receptors to substantial air pollution concentrations” as one of its three significance criteria. However, the 1998 HVSP FEIR does not define sensitive receptor nor make a finding as to the impact of the project on sensitive receptors. FirstCarbon Solutions (FCS) performed an Air Quality and Greenhouse Gas analysis to consider the potential of the proposed project to expose sensitive receptors to asbestos, fugitive PM and diesel particulate matter (DPM) emissions during construction, emissions of toxic air contaminants (TACs) during operation, and CO hotspots. FCS found that neither existing nor new sensitive receptors would be exposed to substantial air pollutant concentrations due to CO hotspots, asbestos, or existing or proposed operational emissions (see Appendix B for details). FCS found that fugitive PM emissions would be mitigated through the measures included in the 1998 HVSP FEIR, as refined and enhanced. Furthermore, emissions of DPM during construction would not result in a new impact, since construction fleets now already have average emissions lower than the corresponding Tier III engine standards that would otherwise be imposed as mitigation. Therefore, the proposed project would not result in any peculiar effects and would not result in new or more severe impacts beyond what was previously analyzed in the 1998 HVSP FEIR. d) Odors Would the project: Result in other emissions (such as those leading to odors or) adversely affecting a substantial number of people? The 1998 HVSP FEIR did not address potential impacts from odors. The 2018 analysis found that there was the potential for objectionable odors during construction of the proposed project, but that the impact would be less than significant due to the short-term nature of the activities and the relatively low intensity of construction activities. Operation of the proposed project would not be expected to result in objectionable odors. Therefore, the proposed project would not result in any peculiar effects and would not result in new or more severe impacts related to odors beyond what was previously analyzed in the 1998 HVSP FEIR. FEIR Mitigation Measures The following mitigation measures were adopted as part of the 1998 HVSP FEIR (Appendix A) and would apply to the project. MM D1 During the construction period, all active unpaved construction areas (residential, golf course, roads, and infrastructure) shall be watered as needed, or treated with soil stabilizers, in order to avoid dust, and exposed stockpiles of dirt or sand shall be enclosed, covered, or treated with dust-preventives.