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8.B. - Page 59 <br /> Civil and Transportation Engineering <br /> ie <br /> June 4, 2014 ( p <br /> Joy <br /> Ms. Michelle Littlefield op ?O/ <br /> Associate Planner Na s0�a S- <br /> Community Development Department <br /> City of Redwood City <br /> 1017 Middlefield Road <br /> Redwood City, CA 94063 <br /> RE: Cambridge Academy Site Circulation Plan dated May 6, 2014 <br /> Dear Michelle, <br /> I have reviewed the revised site circulation plan prepared by Nicholas Berg and have the <br /> following observations and comments: <br /> 1. The plan reduces the total number of students in year six from 180 to 150. The TIA <br /> (traffic impact analysis) was based on a student population of 180 students by year six. <br /> The reduction in students would further reduce any quantifiable traffic impacts created <br /> by the project. There were none in the TIA.. <br /> 2. The revised circulation plan includes further consideration for traffic generated by the <br /> Montessori School and the Roosevelt School. The arrival time for the Academy has been <br /> changed from 7:30 -8:15 to 8:10 -8:40 and the departure time has been changed from 3:00- <br /> 3:30 to 3:15 -3:45 so as not to compound the arrival and departure times for the Roosevelt <br /> School. <br /> 3. The drop off and pick up procedures have also been refined. Because the Academy will <br /> not reach its full student population of 150 students until the sixth year of operation, <br /> these procedures can be refined over time if need be. <br /> 4. The circulation plan assumes a vehicle length of 16 feet and a vehicle -to- vehicle spacing <br /> of three feet. The driveway around the west side of the property to the front of the drop <br /> off area is 415 feet. Using the plan's vehicle queue length of 19 feet the driveway has a <br /> capacity of 22 vehicles. A more conservative vehicle queue length of 25 feet would <br /> provide a queuing capacity of 17 vehicles. In reality the queue capacity will likely be <br /> somewhere in between the two estimates. According to the arrival and departure <br /> calculation sheets, pages 8 -13, the maximum queue in the morning arrival period will be <br /> five vehicles. During the afternoon pick up period the maximum queue is calculated to <br /> be 13 vehicles. It appears that the driveway will have sufficient queuing capacity for the <br /> Academy at full student population of 150 be the sixth year. <br /> 837 Columba Lane • Foster City, CA 94404 • (650)212 -0837 • FAX(650)212 -3150 <br />