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City of Pleasanton—Hidden Canyon Residences and Preserve <br />Draft EIR Aesthetics, Light, and Glare <br /> <br /> <br />FirstCarbon Solutions 3.1-7 <br />https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-01 Aesthetics.docx <br />The proposed project is not expected to significantly block surrounding scenic resources or ridgelines <br />for adjacent properties. Therefore, the proposed project would not have a substantial impact on a <br />scenic vista; impacts would be considered less than significant. <br />Level of Significance <br />Less than significant impact. <br />Mitigation Measures <br />None. <br />Scenic Highways <br />Impact AES-2: The proposed project would not damage scenic resources, including, but not <br />limited to, trees, rock outcroppings, and historic building within a state scenic <br />highway. <br />Impact Analysis <br />The project site consists of mostly undeveloped land, enclosed with a barbed-wire fence. There are <br />no historic structures present on the project site. I-680, traversing Pleasanton in a north–south <br />direction, and State Route (SR) 84, extending west of I-680, are both officially designated State <br />Scenic Highways. I-580 is an Eligible State Scenic Highway but is not officially designated.4 These <br />three highways feature wooded hillsides and valleys and other open space. <br />Construction and Operation <br />A significant impact would occur if the proposed construction and operation would substantially <br />damage scenic resources as seen from a designated scenic highway. The project site is located <br />approximately 1.6 miles west of I-680, which is an officially Designated State Scenic Highway. The <br />next closest officially Designated State Scenic Highway is SR-84, which is approximately 6.7 miles <br />south of the project site.5 Views of the project site are obstructed from both of these highways due <br />to distance, existing commercial and residential developments, and topography. I-580, located less <br />than a mile north of the project site, is an Eligible State Scenic Highway, but existing vegetation along <br />the roadway obstructs views to the south. As such, no impacts to views of scenic resources from <br />State Scenic Highways would occur. <br />Level of Significance <br />No impact. <br />Mitigation Measures <br />None. <br /> <br />4 California Department of Transportation (Caltrans). 2018. California State Scenic Highway System Map. Website: <br />https://caltrans.maps.arcgis.com/apps/webappviewer/index.html?id=465dfd3d807c46cc8e8057116f1aacaa. Accessed July 9, 2025. <br />5 Ibid.