Agenda - Council - 12/14/2021 - Laserfiche WebLink

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assume the roadways surrounding the site have the current configuration. Table 4 summarizes the 2040 No-Build operations at the study area intersections. Table 4 2040 No-Build Operations Overall/Worst Movement LOS& Delay(sec) Intersection Notes/95t" Percentile Q AM Peak Hour PM Peak Hour Variolite St NW& 173rd Ave NW/ NB Q is 28 ft in AM; 175t"Ave NW a (0.7)/a nbl (2.8) a (0.8)/a nbl (3.4) NB Q is 40 ft in PM Variolite St NW& 1611t Avenue EB Q is 41 ft in AM; NW a (1.8)/a eb (5.8) a (2.2)/a wb(6.6) EB Q is 45 ft in PM Variolite St NW&Alpine Dr NW a (2.0)/a sbl (3.9) a (1.8)/a sbl (5.0) SB Q is 45 ft in AM; SB Q is 43 ft in PM Nowthen Blvd NW& 175t" a (1.2)/ ( ) ( )/ ( )a ebl 4.8 a 2.4 a ebl 7.6 EBL Q is 33 ft in AM; Avenue NE EBL Q is 28 ft in PM Nowthen Blvd NW& 173rd NBL Q is 8 ft in AM; Avenue NW a (0.8)/a nbt(0.9) a (2.4)/a nbt(3.3) EBR Q is 9 ft in PM Nowthen Blvd NW& 167t" a (3.4)/ ( ) ( )/ ( )b ebl 12.2 a 3.8 b wbl 15.0 EB Q is 32 ft in AM; Avenue NW WB Q is 62 ft in PM Nowthen Blvd NW& Ramsey EBL Q is 49 ft in AM; Blvd NW a (3.9)/b ebl (10.8) a (4.7)/c ebl (15.4) EBL Q is 80 ft in PM 3. 1. Overall Level of Service reported from SimTraffic delay,first letter represents intersection LOS,while second letter represents worst LOS of individual approach.Upper case letters indicate signalized intersection,and lower-case letters indicate unsignalized intersection 2. 95th percentile queues are a result from an average of 10 SimTraffic simulations. The results shown in Table 4 indicate all intersections and worst movements are expected to operate at acceptable LOS in 2040 without the proposed project. Further, the results indicate all intersections will experience short vehicle queues. (Again, when the operations of the intersection and critical movements are at LOS A,the random number generator can sometimes result in slightly better delay or queuing results on minor movements even with higher traffic conditions.) It is note,the left turning volume from Ramsey Blvd to Nowthen Blvd is great enough to consider a change in traffic control in 2040 at this intersection, however, the forecast operations and queues are acceptable. It is suggested this intersection be monitored as volumes in the area grow to determine if safety or traffic control changes are needed. Table 5 summarizes the results of the 2040 Build traffic operational analysis, assuming no improvements or mitigation. Traffic Impact Study Page 22 Sotarra-Trott Brook S2 Traffic Solutions August 10,2021