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backed-up traffic potentially affecting operation of an upstream intersection), and acceptable freeway ramp operations. However, it is important to note most of these traffic impacts are characterized as significant and unavoidable only because some of the needed improvements require approval by Caltrans and thus are outside the immediate control of the City. As indicated in the December 11, 2019 supplemental memorandum to the Planning Commission from staff (Attachment 5), several of these improvements that would mitigate project traffic impacts to less than significant levels have already been designed and approved and are anticipated for construction and opening later this year. The graphics below (Figures 2 and 3) are intended to provide an overview of the required transportation mitigation improvements resulting from the implementation of the JDEDZ. For more detailed information, please refer to Chapter 4.D of the DSEIR (http://www.cityofpleasantonca.gov/jdedz). Other Impacts The DSEIR concluded that other impacts from the JDEDZ on aesthetics, air quality, biological resources, cultural resources, geology and soils, greenhouse gas emissions, hazards and hazardous materials, hydrology and water quality, land use and planning, noise, population and housing, public services and utilities systems, transportation and traffic, and recreation would be mitigated (when appropriate) to less than significant levels. The mitigation measures are generally typical of measures applied to development in Pleasanton, such as dust control during construction; pre-construction surveys to avoid impacts on birds, bats or burrowing owls; protection of waterways and riparian vegetation; archaeological monitoring for archaeologically sensitive sites; Phase 1 environmental assessments required to assess and remediate any hazardous materials on sites; a limitation on the hours of construction; and vibration and acoustical studies to determine appropriate construction techniques and sound mitigation for new buildings. The DSEIR analyzed three alternatives (No Project, Reduced Retail, and Partial Buildout), which can be found in Chapter 5 of the DSEIR (http://www.cityofpleasantonca.gov/jdedz). The DSEIR found none of the alternatives completely achieve the desired project objectives nor do any of these alternatives completely reduce all significant but unavoidable impacts. Page 12 of 23