1304 80TH ST SW EVERETT SCHOOL DISTRICT 2018-01-02 MF Import

Page I of 3 Benyam Stephanos ?(A)0605 00 From: Michael Brick Sent: Friday,January 19,2007 2:55 PM To: Kirk Brooks; Benyam Stephanos; John Jimerson Subject: RE: Everett School District Transportation Facility The traffic mitigation fee was based on the Gibson Traffic Report trip generation analysis, but the City took Issue with some specific calculations in their report. Following is a summary of the calculations completed to develop the traffic mitigation fee,with differences from Gibson's calculations noted in bold. The Gibson traffic report developed a PM Peak Hour bus trip generation rate of 0.5 buses for each bus parking stall based on a count of the existing facility. This seems reasonable and appropriate, but the Gibson trip generation for the new site was conducted for a total of 100 bus parking spaces, not the 112 described In the project proposal and shown on the plan. Because the City's traffic mitigation is based on the greatest possible trip generation from the site, it is appropriate to assume that the new facility will be completely filled for purposed of established the traffic mitigation fee. As such, the trip generation rate of 0.5 PM Peak Hour trips per bus parking stall was applied to the total bus parking count and the City calculated a total of 66 PM Peak Hour bus trips, rather than the 50 trips the Gibson report predicted. Applying the trip generation methodology outlined in the Gibson report, this would also result in 56 PM Peak Hour vehicle trips as bus drivers travel to and from the site in their personal vehicles, rather than the 50 trips Gibson's report predicted. With the 11 PM Peak Hour maintenance and office staff trips predicted by Gibson, the City's trip generation would result in a total of 123 PM Peak Hour trips from the new bus facility, rather than the 111 trips predicted in the Gibson report. The Gibson traffic report makes the case that the school buses themselves provide a benefit to overall traffic volumes in the City because without bus service more parents would drive their children to school. The City of Everett accepts the argument that school buses trips should not be charged mitigation,which results in a credit of 56 PM Peak Hour bus trips, rather than the 50 trips which the Gibson report credited under this assumption. The Gibson report also outlines the existing land uses on the site as manufacturing and specialty retail and provides trip generations for these land uses. The City accepts the trip generation of 20 PM Peak Hour trips from the manufacturing land use, but the specialty retail trip generation must take Into account pass-by traffic,for which the City does not collect traffic mitigation fees or provide traffic mitigation fee credits. The City typically applies a pass-by rate of 40%when calculating specialty retail trip generation (which was applied in the initial SEPA traffic mitigation fee calculation)but for this location the pass-by rate of 25%which Gibson has historically used for specialty retail can be applied due to the site location and small retail area. Based on a 25%pass-by rate,this project qualifies for a credit of 8 PM Peak Hour trips for the specialty retail land use rather than the 11 trips credited in the Gibson report. The City's credit calculation results In a total credit of 84 PM Peak Hour trips, rather than the 81 trips credited In the Gibson report. The 123 PM Peak Hour trips generated minus the 84 PM Peak Hour trips credited to the site result in a mitigation fee for the 39 new PM Peak Hour trips generated by the development, rather than the 30 new trips calculated in the Gibson traffic report. As such,the mitigation fee due for the project is 39 PM Peak Trips x$1006 per Trip-$39,234. This is a reduction from the original SEPA Traffic Mitigation fee of$41.560 because the Gibson specialty retail pass-by rate of 25% was applied in place of the City's standard 40%pass-by rate The traffic mitigation fee is higher than the$30,180 mitigation fee proposed by the Gibson report because their trip generation underestimated the total number of trips generated by using 100 Instead of 112 bus parking stalls and overestimated the specialty retail trips generation by failing to account for pass-by traffic. If you have any questions regarding this analysis, please contact me and I would be happy to discuss the matter. Michael Brick, P.E. Associate Engineer City of Everett-Traffic Engineering 2/15/2007