5_Exhibit B_Resolution_Attachment 2

31 4 APPENDIX 1: SUMMARY OF FINDINGS 4.1 Segregation in City of Pleasanton • The isolation index measures the segregation of a single group, and the dissimilarity index measures segregation between two different groups. The Theil’s H-Index can be used to measure segregation between all racial or income groups across the city at once. • As of 2020, white residents are the most segregated compared to other racial groups in Pleasanton, as measured by the isolation index. White residents live in neighborhoods where they are less likely to come into contact with other racial groups. • Among all racial groups, the white population’s isolation index value has changed the most over time, becoming less segregated from other racial groups between 2000 and 2020. • According to the dissimilarity index, within Pleasanton the highest level of racial segregation is between Black and white residents.16 However, local jurisdiction staff should note that this dissimilarity index value is not a reliable data point due to small population size. • According to the Theil’s H-Index, neighborhood racial segregation in Pleasanton stayed the same between 2010 and 2020. Neighborhood income segregation stayed about the same between 2010 and 2015. • Above Moderate-income residents are the most segregated compared to other income groups in Pleasanton. Above Moderate-income residents live in neighborhoods where they are less likely to encounter residents of other income groups. • Among all income groups, the Moderate-income population’s segregation measure has changed the most over time, becoming less segregated from other income groups between 2010 and 2015. • According to the dissimilarity index, segregation between lower-income residents and residents who are not lower-income has not substantively changed between 2010 and 2015. In 2015, the income segregation in Pleasanton between lower-income residents and other residents was higher than the average value for Bay Area jurisdictions. 4.2 Segregation Between City of Pleasanton and Other jurisdictions in the Bay Area Region • Pleasanton has a higher share of white residents than other jurisdictions in the Bay Area as a whole, a lower share of Latinx residents, a lower share of Black residents, and a higher share of Asian/Pacific Islander residents. 16 The analysis conducted for this report suggests that dissimilarity index values are unreliable for a population group if that group represents approximately less than 5% of the jurisdiction’s total population. ABAG/MTC recommends that when cities have population groups that are less than 5% of the jurisdiction’s population (see Table 15 in Appendix 2), jurisdiction staff could focus on the isolation index or Thiel’s H-Index to gain a more accurate understanding of neighborhood-level racial segregation in their jurisdiction.