AgdaPkt 2007-08-13 - Laserfiche WebLink

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Ms. Valerie Young June 20, 2007 Page 2 7A Page 91 Saturday PM Peak Trips Dominated as Primary Trips The Department still believes that the Saturday PM peak trips dominate as primary trips because: 1. A majority of trip makers do not work all day Saturday and will be making PM peak hour trips. Home is the origin of these trips. 2. A majority of Costco shoppers are likely to start the trip at home, spend considerable time shopping at Costco, then return home immediately to unload their purchases. Hence, they ate''likely to perceive the shopping trip to Costco as a single purpose trip. Trips Generated from New Fuel Stations We agree that "the recent survey indicated that during the weekday P.M. peak hour and Saturday midday peak hour, respectively, an average of 48.7 percent and 58.6 percent of the fuel station customers also visit the warehouse." Therefore, fuel station-then-visit-warehouse trips generated from the new 16 fuel stations should be 190 vph (=390*0.487) for weekday peak hour and 223 vph (=380*0.586) for Saturday PM peak hour, respectively. On the other hand, the Department contends that 51.3 percent and 41.4 percent of the fuel station customers, respectively, would not visit the warehouse yet generate additional trips to the project site. Therefore, the estimated fuel station.only trips generated from the new 16 fuel stations should be 200 vph (=390*0.513) for weekday peak hour and 157 vph (=380*0.414) for Saturday PM peak hour, respectively. The 200 vph and 157 vph may serve multiple purposes and several stops. However, those trips still go through project driveways along Middlefield Road. No Diverted Trips Along Woodside Road According to Figure 3-1, Proposed Site Plan and Figure 8, Project-generated Traffic, the driveways to the project site are only located along Middlefield Road. There is no driveway access along Woodside Road (State Route (SR) 84). Thus, there are no diverted trips along Woodside Road. Net New Trips Since the majority of trips are primary trips, there are no diverted and internal trips, but perhaps there are some pass-by trips for fuel station only c.,'ustomers. Net new trips should be almost equal to primary trips. For a conservative approach, the total new net trips generated due to expansion and PJel station should be 506 (=116+200+190) vph and 566 (=186+157+223) vph for weekday peak hour and Saturday PM peak hour. The Department understands the conservative approach might double count some warehouse-and-then-visit- fuel station trips. These trips would be from new Costco customers who are shopping due to the warehouse expansion. However, the Kittelson traffic study shows 220 and 190 vph for weekday peak hour and Saturday PM peak hour, which are definitely much under-estimated. Please revise Table 4.4-5, Estimated Trip Generation and Figure 8 Project-generated Traffic accordingly. Traffic Response to Comment Letter B-2 Item 2: The Department disagrees with the response. The average delay time of 56.0 seconds as shown in the DEIR, page 4.4-12, Near Term Traffi.c Conditions with Project, under Intersection Operations Analysis, first paragraph, line 6, and in Table 4.4-6 for the intersection of Woodside "Caltrans improves mobility across California"