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BOOK 100 PAGE 903 <br />Formula for Determining Number of Peak Hour/Peak Season/Peak <br />Direction Trips Generated: Number of Units % P.M. Peak Hour <br />Rate % Inbound P.M. Percentage 8 Inbound -Southbound Percentage <br />(120 8 1.01 % .65 $ .525 m 41) <br />S. Formula for Determining Number of Average Weekday Trips <br />Generated: Number of Units % Average Weekday Rate <br />(120 B 10.1 m 1,212) <br />Proposed Land Use Desicmation <br />1. Retail Commercial use Identified in 5th Edition ITE Manual: <br />Shopping Center <br />2. For 150,200 sq.ft. Shopping Centers in 5th Edition ITE Manual: <br />a. Average Weekday Trip Ends: 60.7/1,000 square feet <br />b. P.M. Peak Hour Trip Ends: 5.66/1,000 square feet <br />C. Inbound (P.M. Peak Hour): 50% <br />i. Southbound (P.M. Peak Hour): 52.5% <br />ii. Northbound (P.M. Peak Hour): 47.5% <br />d. Outbound (P.M. Peak Hour): 50% <br />i. Southbound (P.M. Peak Hour): 47.5% <br />ii. Northbound (P.M. Peak Hour): 52.5% <br />3. Peak Direction of 58th Avenue, from 16th Street to SR 60: <br />Southbound <br />4. Formula for Determining Number of Peak Hour/Peak Season/Peak <br />Direction Trips Generated: Total Square Footage 8 P.M. Peak <br />Hour Rate B Inbound P.M. Percentage B Inbound -Southbound <br />Percentage (150,200 B 5.66/1,000 B .5 8 .525 a 223) <br />(trip distribution based on a Modified Gravity Model) <br />S. Formula for Determining Number of Average Weekday Trips <br />Generated: Total Square Footage 8 Average Weekday Rate <br />(150,200 8 60.7/1,000 sq.ft. m 9,117) <br />6. Traffic Capacity on this segment of 58th Avenue, at a Level of <br />Service "D": 1,890 peak hour/peak season/peak direction trips <br />(Based on completion of project currently under construction <br />to expand 58th Avenue from 2 lanes to 4 lanes) <br />7. Total Segment Demand (existing volume + vested volume) on this <br />segment of 58th Avenue: 1,178 peak hour/peak season/peak <br />direction trips <br />The number of Average Weekday Trip Ends associated with the most <br />intense use of the subject property under the existing land use <br />designation is 1,212. This was determined by multiplying the 120 <br />units (most intense use) by ITE's single-family residential factor <br />of 10.1 Average Daily Trip Ends/unit. <br />The number of Average Weekday Trip Ends associated with the most <br />intense use of the subject property under the proposed land use <br />designation is 9,117. This was determined by multiplying the <br />150,200 square feet of shopping center (most intense use), by ITE's <br />shopping center fitted curve factor of 60.7 Average Daily Trip <br />Ends/1,000 square feet. <br />Since the county's transportation level of service is based on peak <br />hour/peak season/peak direction characteristics, the transportation <br />concurrency analysis addresses project traffic occurring in the <br />peak hour and affecting the peak direction of impacted roadways. <br />According to ITE, the proposed use generates more volume in the <br />p.m. peak hour than in the a.m. peak hour. Therefore, the p.m. <br />peak hour was used in the transportation concurrency analysis. The <br />peak direction during the p.m. peak hour on 58th Avenue is <br />southbound. <br />Given those conditions, the number of peak hour/peak season/peak <br />direction trips that would be generated by the most intense use of <br />the subject property under the existing land use designation was <br />calculated to be 41. This was determined by multiplying the total <br />number of units allowed (120) under the existing land use <br />designation by ITE's factor of 1.01 p.m. peak hour trips/unit, to <br />determine the total number of trips generated. Of these trips, 65%- <br />(79) will be inbound and 35% (42) will be outbound. Of the inbound <br />trips, 52.5* or 41.will be southbound. <br />MARCH 18, 1997 30 <br />