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ARROYO LAGO RESIDENTIAL PROJECT ADDENDUM 194 FCS Https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480036/Addendum/21480036 Arroyo Lago Residential Project Addendum.docx d) If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, or drainage changes? Prior FEIR Conclusions The Prior FEIR explained that the project site and the off-site improvement areas are not located in an SRA or a Local Responsibility Area (LRA) FHSZ. The Prior FEIR found that the nearest FHSZ is approximately 1.55 miles north of the project site, north of I-580, and is designated as a Moderate FHSZ in an SRA. The nearest VHFHSZ is located in an LRA approximately 3.06 miles southwest of the project site. Therefore, impacts related to wildfire would be less than significant. The following analysis is provided for informational purposes only. Emergency Response/Evacuation Plan Consistency The Prior FEIR found that during construction, equipment and vehicles may impede evacuation or emergency vehicle access. However, these blockages would be temporary and would not hinder access to and from the major roads surrounding the project site. The Prior FEIR determined that the County Project would not impair or interfere with any adopted emergency response or evacuation plans. The County Project includes adequate emergency access routes and internal circulation, and it would be reviewed by the appropriate fire and emergency service providers to ensure compliance with applicable safety standards. Therefore, the Prior FEIR concluded that impacts would be less than significant. Expose Project Occupants to Pollutant Concentrations from Wildfire The project site is located in an unincorporated area of the County, between the Cities of Livermore and Pleasanton, adjacent to the Zone 7 Chain of Lakes. The project site is relatively flat and is surrounded by urbanized uses to the west and south, as well as lakes and open grassland to the east and north. These areas are lacking in woodlands or vegetation that could provide fuel load for wildfire, or steep slopes that could cause fire to spread more rapidly. Furthermore, features such as the Zone 7 Chain of Lakes and Busch Road serve as fuel breaks in the event of a fire. The open space adjacent to the east of the project site contains a similarly flat slope, lack of fuel load for wildfire, and has the same adjacent features to serve as fuel breaks in the event of a fire. Further, according to the California Department of Forestry and Fire Protection (CAL FIRE), the project site is not located in or near a VHFHSZ or a SRA. Therefore, the Prior FEIR concluded that impacts would be less than significant. Infrastructure that Exacerbates Fire Risk The Prior FEIR found that the County Project would include emergency access routes on Busch Road and via the private El Charro Road. The project site is in an urban area with existing roadways to the south and west and is adjacent to a lake and vegetation open space area with minimal fuel loading to the west and north. The County Project would not require the installation of firebreaks because it is in an urban area surrounded by existing developments with little natural vegetation.