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DRAFT December 5, 2003 C y 10) Mr. Jerry Violett SAN JOAQUIN COUNTY DEPARTMENT OF PUBLIC WORKS P.O. Box 1810 Stockton, CA 95201-1810 fax(209)468-2999 RE: TRAFFIC STUDY FOR DRIVE THRU ESPRESSO RESTAURANT, (PA-0300444), SAN JOAQUIN COUNTY: STUDY LOCATIONS Dear Mr. Violett: This letter summarizes our assessment of the potential peak hour trip generation associated with the Drive-Thru Espresso Restaurant at SR 99 / Jahant Road. As we have discussed, because no formal published data exists for this land use type, our work involved observation of peak hour traffic at two similar existing businesses, development of average trip generation rates based on these observations and application of these rates to the proposed project. Background Data. The normal approach to a trip generation study is to observe traffic at comparable sites, and divide the observations by an easily identifiable parameter (i.e., building sf) to develop trip generation rates. Thus it is important that the characteristics of the observed uses be similar to those of the proposed project. Two sites were identified for this review. Lodi Coffee Kiosk. The Lodi site is a relatively small (300 sf) kiosk that serves coffee and sells convenience items. The site adjoins a relatively busy intersection in Lodi. The site can be monitored easily since it is only drive-thru. The person on duty suggested the business was very busy in the morning with traffic queuing back onto the street. Plantation Cafe. The Elk Grove site is a combination cafe, bakery, and convenience store with a major drive-through coffee operation (i.e., dual aisles with long stacking available) near a very busy intersection. The building appears to be about 2,400 sf. The Plantation Cafe is directly across Elk-Grove Florin Road from Kerr Middle School, and we observed that many parents dropped their children off at the cafe in the morning before school and picked them up from the site as well. Proposed Project. The proposed project site is immediately adjoining the SB on-off ramp at the Jahant Road intersection. While there is little traffic on the country roads in this area,the site is very visible from the southbound lanes of SR 99 that carry 30,000 ADT. The proposed project will be a building of about 1,000 sf.