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RE7.A. - Page 441 Expansion Project#:11637.0 <br /> Auyus�v,�v�� Page 26 <br /> activity at all of these locations is reported to be higher than was currently occurs at the Redwood <br /> City location, it is possible this would be an appropriate estimation for the project. Table 11 <br /> summarizes the total fuel station trip generation estimated under an expanded scenario based on <br /> data from the representative 16 and 20 fueling position locations. It also summarizes the trip type <br /> breakdown for the estimate given the existing internal trip capture, pass-by, and diverted trip rates <br /> determined from survey data collected at the Redwood City Costco site in May 2011 and compares <br /> the trip generation estimate under the expanded scenario to the trip generation of the existing site. <br /> Table 11 Approach #1: Expanded (20 Fueling Position) Redwood City Costco Gasoline Trip <br /> Generation Estimate Based on Equal or Greater Activity Sites— <br /> Weekday PM Peak Hour <br /> Existing Site 5 Island Expanded <br /> Trip Generation Trip Generation Difference <br /> In Out Total In Out Total In Out Total <br /> Total Trip Ends 200 200 400 215 215 430 15 15 30 <br /> Internal Trips(22%PM) (45) (45) (90) (45) (45) (90) (0) (0) (0) <br /> External Trips 155 155 310 170 170 340 15 15 30 <br /> Pass-by Trips(22%PM) (35) (35) (70) (35) (35) (70) (0) (0) (0) <br /> Diverted Trips(59%PM) (90) (90) (180) (100) (100) (200) (10) (10) (20) <br /> Net New Trips 30 30 60 35 35 70 5 5 10 <br /> As shown in Table 11, applying this approach results in an estimate of approximately 430 total trip <br /> ends and 70 net new trip ends during the weekday p.m. peak hour. This equates to increase of 30 <br /> additional external trip ends and 10 additional net new trip ends over what the site is currently <br /> generating during the weekday p.m. peak hour. <br /> APPROACH #2: TRIP GENERATION BASED ON HIGHEST OBSERVED 5 ISLAND LOCATION <br /> The second approach used to develop a trip generation range for the proposed project was to review <br /> the existing activity and trip generation for the other 5 island (20 fueling position) Costco Gasoline <br /> locations that existing in the continental United States. Transactions and sales volume data from the <br /> two existing Costco Gasoline stations with 5 islands was collected and compared to Redwood City's <br /> current activity, as shown in Table 12. <br /> Kittelson&Associates,Inc. Boise,Idaho <br />