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Table I summarizes the number of gaps in both directions that are available on Fourth Street at the project site. As this table shows, there were 100 gaps of ten seconds or more in both directions of traffic during the AM peak hour. Assuming that 50 percent of project traffic is distributed to the east and 50 percent to the west, there were at least 100 gaps of sufficient duration to accommodate 24 left-turn vehicles (13 trips inbound from east of the site and II trips outbound to west of the site) during the AM peak hour. Similarly, there were at least 87 gaps to accommodate 23 left turn vehicles (II inbound from the east and 13 outbound to the west) during the PM peak hour. Sufficient gaps of adequate length are available on Fourth Street to allow the project traffic to enter and exit the site via a left turn. IMPACT OF TRAIN CROSSINGS The site is situated on Fourth Street immediately adjacent to the railroad crossing of the OCT A Metrolink mainline. The Santa Ana Regional Transportation Center (RTC) is situated just north of Fourth Street (at Santa Ana Boulevard). There are frequent train crossings at Fourth Street, which interrupts the traffic flow there. The passenger trains actually stop at the Santa Ana RTC but those stops do not block Fourth Street. Observations of the gaps in traffic on Fourth Street indicate that, while frequent train crossings do occur, they do not create a long-term blockage of the east-west flow. For example, examination of the gap data (see appendix) in the two peak periods (7-9 AM and 4-6 PM) reveals at no time was traffic flow on Fourth Street interrupted for more than one and a half minutes. Consequently, it is concluded that the existing train crossings albeit frequently, does not constitute a significant factor with respect to access to/from the site. In fact in one respect, access to and from the east is actually facilitated by the train crossings. CONCLUSION In summary, based upon the finding of a literature search and actual parking demand case studies at three existing Contractor's Warehouse Stores, it is concluded that an absolute peak parking demand on the single highest day of the year will not exceed 90 parking spaces and that includes all contractor vehicles. A total of 104 spaces (including six handicapped spaces) are being provided which results in a maximum 83 percent utilization even for the highest day of the year. During most of the time, the parking is expected to be at most about half full since the current parking at the La Habra site (maximum 42 spaces occupied) appears most representative of the planned Santa Ana site. Santa Ana HD Supply Repair and Remodel Site Traffic and Parking Analysis 6 Austin-Foust Associates, Inc. 1073001 rpt.doc 31A-64