6107 BERKSHIRE DR SEPA 016 - 041 Traffic Report 2025-04-14

Everett Safe Streets Traffic Impact Analysis The count at Patrick Place in Seattle, which is managed by the same organization as the Everett location, was completed in October 2016 during a normal day when the site was fully occupied. The count was completed by the independent count firm Traffic Data Gathering (TDG) and showed a total of 2 trips during the PM peak-hour and a total of 3 trips during the PM peak-period (4:00 PM to 6:00 PM). These trips included a visitor who parked outside of the garage and could have been a pedestrian trip, but was counted as a vehicle trip to be conservatively high in the trip generation of the similar site. The low number of trips generated by Patrick Place is similar to the anticipated trip generation for the Everett site since most the residents do not have full-time employment and only a handful own vehicles. Additionally, the few employees who have visiting offices on-site do not operate on a typical work schedule and would be unlikely to generate trips during the typical 4:00 PM to 6:00 PM peak-period. The Everett Safe Streets site is anticipated to have the same PM peak-hour trips generation as the Patrick Place location, 2 PM peak-hour trips. However, to represent a very conservatively high peak-hour trip generation,the Everett site has been analyzed with 8 PM peak-hour trips,4 inbound and 4 outbound trips. This trip generation is nearly three-times more than the 2-hour PM peak- period from the Seattle site and four-times as high as the PM peak-hour. 4. TRIP DISTRIBUTION The Everett Safe Streets trip distribution is based on PM peak-hour counts and surrounding commercial and retail uses. It is anticipated that 70% of the development's trips will travel along Broadway Avenue, forty percent to and from the south and thirty percent to and from the north. Approximately 15%of the development's trips are anticipated to travel to and from the south along Berkshire Drive. The remaining 15% of the development's trips are anticipated to travel to and from the east along 63`d Street SE. The detailed trip distribution is shown in Figure 2. 5. TRAFFIC VOLUMES Count data at the study intersections is based on data collected by Traffic Data Gathering (TDG) in October 2016 and data from City of Everett. The existing turning movements are shown in Figure 3. The 2021 baseline traffic volumes were calculated using a 4% annually compounding growth rate that was identified during scoping discussion with City of Everett staff. The 2021 baseline turning movements are shown in Figure 4. The 2021 future with development turning movements were calculated by adding the development's trips to the 2021 baseline turning movements. The 2021 future with development turning movements are shown in Figure 5. Gibson Traffic Consultants, Inc. October 2016 info@gibsontraffic.com 4 GTC #16-253