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that because it is residential, it is anticipated that 70 percent of those trips would be leaving in the morning and then coming back home in the PM peak hour. He continued that if all these vehicles use that front entrance, there would be one car a minute as far as the additional number of trips, and then 30 cars coming out every two minutes. Mr. Tassano stated that he has looked at the site several times, and he was out there again today in both peak hours. He noted that there is a sufficient number of gaps on West Las Positas Boulevard to make the turns into and out of the site. He added that ValleyCare currently uses that driveway with about 15 to 20 vehicles in the peak hour with delays under 10 seconds to get into and out of the site. He indicated that staff does not anticipate that volume changing as far as the number of gaps available. Mr. Tassano stated that the City has a traffic consultant who works on addressing issues such as the need for a traffic signal. He indicated that from his analysis, it does not look like given the traffic volume on West Las Positas Boulevard and the volume generated by the existing residential home site, as well as the anticipated volume from the proposed home site, the installation of a traffic signal would decrease, delay, or change safety in any fashion. He explained that when the City installs a traffic signal, one of the things staff looks at is safety, and, one of the things that is compromised with safety is that drivers sifting at the traffic light for two or three minutes start to think that they missed that gap the last time by three seconds and so they are going to try and take this next one; and that is where broadsides occur because people are so frustrated that they want to try and jump out there. He reiterated that there are enough gaps out there, and the longest delay he saw was about 50 seconds for one of the vehicles that wanted to leave, which is probably about how long it takes the traffic signal to get off the main street because it is going to wait for a gap in traffic on West Las Positas Boulevard and would not actually decrease that delay for that vehicle but would increase the delay for the other vehicle. Mr. Tassano stated that the circulation looks good within the site. He indicated that he saw truck turning templates for the fire truck. He noted that one of the things he tries to look for is the pedestrian and bicycle access and ensures that they are present because there is a trail amenity in the area. He stated that from his initial glance, with the exception that maybe there are one or two tight turns in there, it appeared to work just fine for a fire truck, so the circulation would work well for this site. He indicated that the only other thing he would look at are the alleys for the parking; he stated that he did not have the dimensions for them but that he can work on that with the design engineers. Acting Chair Blank inquired if there would be a difference in the traffic flow between an office building and this project in terms of quantity. Mr. Tassano replied that the office building that would be there would have 80 trips in the PM peak hour, and this residential project has 100 trips, so it is just slightly higher. He noted that the distribution would be different: 80/20 for the office where everyone goes in the morning and goes out in the afternoon; and 70/30 for residential where everyone goes out in the morning and comes back in the afternoon. PLANNING COMMISSION MINUTES, November 14, 2012 Page 23 of 31