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Section 4,0—Environmental Setting and Discussion of Impacts <br />Using the surveyed trip generation rates, the 220 student enrollment increase that could result from <br />the proposed project plus fulfillment of the unmet existing capacity at Sandpiper Elementary School <br />(i.e., 62 students) is expected to generate a total of 286 and 195 new AM and PM peak hour trips, <br />respectively. The trip generation estimates for the proposed project, including fulfillment of the <br />existing unmet capacity, are shown in Table 4.16-4, below. <br />Table 4.16-4: Trip Generation Estimates' <br />Ism, ri._CiTM <br />PM Peak Hour <br />Enrollment <br />Increase Peak Trips Trips Total Peak <br />Trips <br />Trips Total <br />Rate in out Rate <br />in <br />out <br />Staff <br />F 11 1.00 11 0 11 0 <br />0 <br />0 <br />0 <br />Elementary School —102 Students* <br />Working 61 0.98 32 28 60 0.69 <br />20 <br />22 <br />42 <br />Parents <br />Non -Working 41 0.98 21 19 40 0.69 <br />13 <br />15 <br />28 <br />Parents4 <br />Middle School —180 Students <br />Working 108 0.98 55 50 105 0.69 <br />36 <br />39 <br />75 <br />Parents <br />Non -Working 72 0,98 37 33 70 0.69 <br />24 <br />26 <br />50 <br />Parents <br />Total 156 130 286 <br />93 <br />102 <br />195 <br />Trip generation estimates include existing unmet capacity (i.e., 62 students) at Sandpiper <br />Elementary <br />School. <br />'-School staff typically leave one or more hours after students are dismissed and, therefore, <br />are not included <br />in the PM peak hour. <br />'It is assumed that working parents will drop off students on their way to work. <br />'It is assumed that non -working parents will drop off students and return home. <br />Trip Distribution and Assignment <br />The trip distribution patterns were estimated based on District student attendance maps. The peak <br />hour trips generated by the 220 student enrollment increase that could result from the proposed <br />project plus the unmet existing capacity at Sandpiper Elementary School (i.e., 62 students) were <br />assigned to the roadway system in accordance with the trip distribution patterns discussed above. <br />Trip distribution patterns and trip assignment data is included in Appendix F of this IS. <br />City of Redwood City 95 Initial Study/Mitigated Negative Declaration <br />Sandpiper Elementary School Facilities Expansion November 2016 <br />