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<br />7A <br />Page 55 <br /> <br />Response to Comments in FEIR Letter A-2 <br /> <br />1. The comment requests an explanation of the variety of trip types discussed in the <br />Draft EIR. Although previously discussed in the June 19, 2007 staff report and in <br />the presentation to the Planning Commission and Zoning Administrator, <br />additional information is included here to provide further clarification regarding <br />trip types and how they are evaluated. Descriptions of trip types relevant to the <br />Costco traffic study are provided below: <br /> <br />. Primary trips are those that are made from an origin or starting point to a <br />primary or "final" destination. Going to work from home represents one <br />primary trip, and the return trip from "vork to home is another primary trip. <br /> <br />. Pass-by trips are those that occur when a driver makes an intermediate stop <br />at the Costco site when already "passing by," using the immediately adjacent <br />roadway on the way from an origin to a different primary trip destination. An <br />example of a pass-by trip for the Costeo project is a trip already occurring on <br />Middlefield Road that makes a stop at the Costco site and then returns to <br />Middlefield Road toward a primary destination, such as a workplace. <br /> <br />. Diverted trips are those that occur when a driver is already on a roadway <br />within the vicinity of the site and alters their travel route to the roadway <br />immediately adjacent to the Costco site in order to visit the site before <br />continuing on to a primary destination. An example of a diverted trip for the <br />Costco project is a trip on Woodside Road diverted to Middlefield Road to <br />access the Costco site. Upon leaving the site, travel would return to <br />Middlefield Road and then resume on Woodside Road to access the freeway <br />for the sake of traveling to the primary destination. <br /> <br />. Internal capture trips are those trips that can be attributed to drivers that <br />were already making a trip to the Costco site as a primary trip. In the case of <br />the Costco project, internal capture trips to the gas station would occur when <br />a driver was already making a trip to the Costco retail warehouse or to <br />Orchard Supply Hardware, which is located within the same shopping center <br />area and has shared access with Costco. These trips happen on-site and do <br />not utilize the external roadway network. In the case of the Redwood City <br />Costco project, the site is already developed with a long-standing Costco with <br />a well-established customer base. Thus, internal capture trip rates are <br />expected to be fairly high because this Costco already has many warehouse <br />customers who would likely also use the gas station in association with their <br />primary shopping trip. Trips to the gas station by these customers who would <br />have already visited the store are not counted as new trips. New trips <br />associated with an increased number of store visits by existing customers or <br />trips taken by new customers are counted as new primary trips. <br /> <br />For gas stations, pass-by and diverted trips are often associated with work commute <br />routes. It is important to understand that pass-by and diverted trips, although <br />discounted from overall trip generation rates, are still accounted for in the traffic <br />study's assessment of all intersection operations, including all of the turn and through <br />movements associated with the pass-by and diverted trip routes. Thus, although they <br />