75A - PH - ZONING 2500 N MAIN ST

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r � transportation consulting, inc. MEMORANDUM TO: Kellee Preston, Discovery Science Center FROM: Pat Gibson, P.E., PTOE, Sarah Drobis, P.E., and Richard Gibson DATE: October 17, 2012 RE: Parking Assessment for the Discovery Science Center Expansion Project Santa Ana, California Ref: J1195 Gibson Transportation Consulting, Inc. (GTC) was asked to analyze the current and future parking demands of the Discovery Science Center (Center) in Santa Ana, California. This memorandum provides a summary of our analysis, including a customized parking demand model based on the existing parking conditions at the Center and an assessment of future parking demand. SITE DESCRIPTION AND EXISTING CONDITIONS The Center is bound by Santiago Creek to the north, Main Street to the east, and Interstate 5 to the south and west, and contains a total of 59,205 square feet (sf) of building area including 45,368 sf of parking demand generating area including exhibit space, dining area, gift shop, administrative offices, exhibit storage space and other ancillary uses. The Center is open from 10:00 am to 5:00 pm, seven days a week; it occasionally opens earlier or closes later for special events or tours. A parking space inventory conducted in August 2012 indicates that the Center has a total on -site parking supply of 303 available spaces. The Center currently has shared parking agreements with, and uses, various off -site parking lots within walking distance of the Center for over -flow parking on especially busy days. The parking lots used for over -flow operations include the Citibank garage and the Wells Fargo parking lot, located across Main Street from the Center, which combined contain over 600 parking spaces that may be used by the Center on weekdays, weekends or special event days. PROJECT DESCRIPTION The Center is planning the expansion of its facility on the northwest portion of the site that is currently utilized as a parking lot to include more exhibit, administrative office, dining and theater space (the Project). The new building contains 45,853 sf of gross building area. At completion and full occupation of the Project, the Center will provide a total of 105,058 sf of 523 W. 6th Street, Suite 1234 Los Angeles, CA 90014 p. 213.683.0088 f. 213.683.0033 75W26 "