4730 COLBY AVE SEPA 016 - 027 - YMCA Traffic Report 2025-04-14

. , YMCA Recreational Community Center Traffic Impact Analysis 2. METHODOLOGY 2.1 General Trip generation for the YMCA Recreational Community Center development is based on average trip generation rates from the Institute of Transportation Engineers (ITE) Trip Generation, 9th Edition (2012) as well as acceptable pass-by rates for health clubs published by Snohomish County. 2.2 Scope of Analysis The scope of analysis of impacts is based on the City of Everett typical threshold of 50 or more PM peak-hour trips. The only intersections that are anticipated to meet the threshold is the intersection of Colby Avenue at Site Access/48th Street SE. Additionally,the site access to Rucker Avenue has also been evaluated. Traffic congestion on roadways is generally measured in terms of level of service(LOS)at critical intersections. In accordance with the Highway Capacity Manual, roadway facilities and intersections are rated between LOS A and F,with LOS A being free flow and LOS F being forced flow or over-capacity conditions. The level of service at signalized intersections and all-way stop- controlled intersections are based on the average stopped delay for all entering vehicles. The level of service at two-way stop-controlled intersections is based on stopped delay times for the critical approach or movement(s). Geometric characteristics and conflicting traffic movements are taken into consideration when determining level of service values. A summary of the level of service criteria has been included in Table 1. Gibson Traffic Consultants, Inc. August 2015 info@gibsontraffic.com 3 GTC #15-118