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Administrative Draft Environmental Impact Report Gill Medical Center Project The VMT per Service Population unit of measure applied in the General Plan Draft EIR is also applied in the Traffic Study and this draft EIR. The General Plan Draft EIR notes the VMT per Service population in the General Plan Planning Area is 24.16 VMT per Service Population. A 15 percent reduction from this value would be 20.54 VMT per Service Population (24.16 x 0.85 = 20.54). Therefore, in this draft EIR, if the Project would result in 20.54 VMT per Service Population or less, the project will be considered to have a less than significant impact on VMT. If the proposed Project would result in more than 20.54 VMT per Service Population, the project will be considered to have a significant impact on VMT. At the time the analysis presented in the Traffic Study commenced, neither the City of Stockton nor the County of San Joaquin had adopted guidelines for analyzing VMT or determining the significance of a project's impact on VMT. Both the City and County were in the process of developing and adopting guidelines, but neither process was completed. The VMT analysis presented in this draft EIR is not intended to pre-empt either the City or County process of developing and adopting VMT guidelines. Rather, the analysis presented in this draft EIR is intended to be a good-faith effort at disclosing and identifying the VMT impacts of the proposed Project based on currently available data and guidance. 4.19.3.2 Methods of Analysis Following is a description of the draft EIR transportation analysis methods. Intersection Level of Service Analysis Procedures Level of service (LOS) analysis provides a basis for describing existing traffic conditions and for evaluating the significance of project-related inconsistency with General Plan transportation policies. Level of service measures the quality of traffic flow and is represented by letter designations from A to F, with a grade of A referring to the best conditions, and F representing the worst conditions. The characteristics associated with the various LOS for intersections are presented in Table 4.19-1. Level of service at both signalized and unsignalized intersections was analyzed using methods presented in the Highway Capacity Manual. Methods described in the Highway Capacity Manual were used to provide a basis for describing traffic conditions and for evaluating the significance of inconsistency with General Plan policies. As specified by City of Stockton staff, methods from the Highway Capacity Manual 2000 (Transportation Research Board 2000) were used to analyze local roadway intersections. As specified in the City of Stockton Transportation Impact Analysis Guidelines (City of Stockton 2003), the Traffix software analysis package was used to analyze local roadway intersections. Caltrans District 10 recommends use of the Highway Capacity Manual 6th Edition (Transportation Research Board 2016) and the Synchro software package (Trafficware 2020). Therefore, as specified by City of Stockton staff, freeway ramp intersections were analyzed using Highway Capacity Manual 6th Edition methods and the Synchro software package. The lengths of vehicle queues were also analyzed for this traffic impact study. Methods presented in the Highway Capacity Manual 2000 and Highway Capacity Manual 6th Edition were used to analyze queuing. 95th percentile queue length values are presented in the Traffic Study. Transportation 4.19-21 October 2021