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P24-0670, -0671, and -0672, 1803 Santa Rita Road Planning Commission 10 of 12 drive-through has been operating for approximately the past 30 years without any traffic or circulation problems being reported to the City. A drive-through queue assessment (Exhibit B) was provided by the applicant to confirm that waiting queues will not extend into the adjacent drive aisle and/or interfere with circulation at the shopping center. The study analyzed a similarly sized Philz Coffee in Fullerton, California, during three different peak times on weekdays and on a Saturday from 6 a.m. to 7 a.m., 1 p.m. to 2 p.m., and 4 p.m. to 5 p.m. The report concluded that the longest queue at any time totaled four vehicles from the pay/pick-up window. As previously described, the existing drive-through lane accommodates five vehicles between the menu board/speaker and the pay/pick-up window, as well as one additional vehicle behind a car stopped at the menu/order board. Thus, space for the maximum observed queue would be available. The City’s Traffic Engineer has reviewed the assessment and agrees it is unlikely that vehicle queues would extend beyond the limits of the existing drive-through lane and into the shopping center drive aisles. Parking is shared amongst the uses/buildings in the Valley Plaza Shopping Center. A total of 19 shared parking spaces exist on-site. The PMC requires restaurants to provide one parking space for each three seats or each 200 square feet of gross floor area, whichever is greater. 13 parking spaces would be required for the existing approximately 2,479-square-foot building. Therefore, the 19 existing parking spaces comply with the PMC parking requirements. In general, staff has not observed or received comments in the past regarding parking shortages in the Valley Plaza Shopping Center. Therefore, staff does not anticipate parking being an issue due to the proposed use. Based on the above parking analysis and recommended conditions of approval, staff believes the proposed use would not adversely affect parking at the subject site or surrounding properties and adequate parking exists on-site to accommodate all existing and proposed uses. However, should parking problems occur, staff has recommended a condition of approval that allows the Director of Community Development to refer the use permit back to the Planning Commission for possible additional mitigation measures which could include a reduction in the number of clients/employees on-site at any one time or alternative hours of operation. Noise For drive-through uses, the primary noise sources are idling vehicles in the drive -through queueing lane and the menu board/speaker. Staff notes the proposed use is unlikely to generate any significant noise impacts or result in a substantial change in ambient noise levels on sensitive receptors in the area given the existing noise levels generated by the previous drive-through use (KFC), the surrounding drive-through restaurant and commercial uses within the Valley Plaza Shopping Center, vehicles traveling on Santa Rita Road, and the location of the drive-through queueing lane and ordering speaker and their distances from the closest sensitive receptors (residential uses to the east and west, approximately 250 to 480 feet away to the east and west, respectively). Additionally, the drive-through queueing lane and menu board/speaker are generally oriented facing away from those residential uses. A typical drive-through audio system generates approximately 75 decibels (dBa1) from a distance of 3 feet, 64 dBa from a distance of 20 feet, and 53 dBa generated from a distance of 70 feet. If 1 A-weighted decibels are an expression of the relative loudness of sounds in air as perceived by the human ear.