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Administrative Draft Environmental Impact Report Gill Medical Center Project project site instead travelled to locations offering similar services (i.e., hospital and medical office building). Using the methods described immediately above, the Project is estimated to result in 51,587 gross VMT per day and 34,182 net VMT per day. As noted in Chapter 3.0 Project Description, an estimated 600 employees would work at the proposed Project site. As a result, the Project is expected to result in 85.98 gross VMT per Service Population ( 51,587 - 600 = 85.98) and 56.97 net VMT per Service Population (34,182 _ 600 = 56.97). The VMT per Service Population for both the gross and net values are relatively large because of differences in how VMT is estimated and how service population is defined. The differences primarily involve how project-related customer travel is applied. Customer travel is included in the VMT estimate. That is, travel by customers to and from the Project is included in the VMT estimate. Conversely, customers are not included as part of the project "service population."The Envision Stockton 2040 General Plan Update and Utility Master Plan Supplements Draft EIR (City of Stockton 2018c) defines service population as the "sum of population and employment." Customers are not considered population (i.e., residents) at the Project site, and are not employed at the Project site. Because customers are included in the VMT estimate, but not the service population, the ratio of VMT per Service Population is relatively large. The estimate of gross VMT is larger than net VMT. In this draft EIR, the conservatively larger gross VMT value is used to identify the significance of the project-related impact. The lower net VMT value is presented for information and disclosure. Because the project-related 85.98 VMT per Service Population is greater than 20.54 VMT per Service Population, the proposed project is considered to have a significant impact on VMT. The impact of the proposed Project on VMT could be reduced by implementing recommended Mitigation Measures 4.19-1f and 4.19-2a through 2c. However, because of the magnitude of difference between Project-related VMT per Service Population and the VMT per Service Population significance threshold, implementation of these mitigation measures would not reduce this impact to a less-than-significant level, and this impact is considered significant and unavoidable. Mitigation Measures Implement Mitigation Measure 4.19-1f. Provide a Designated On-Site Public Transit Facility presented above. In addition, the following ridesharing measures shall be implemented. The recommended measures are adapted from the California Air Pollution Control Officers Association (CAPCOA) document Quantifying Greenhouse Gas Mitigation Measures (CAPCOA 2010). Ridesharing measures are intended to increase vehicle occupancy(i.e., the number of people in each vehicle) which results in fewer cars driving the same number of person trips, and thus decreases project-related VMT. Transportation 4.19-41 October 2021