75A - PH KARA GRANT APPEAL - Laserfiche WebLink

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LAW OFFICE OF KARA E. GRANT RK 15528 Rage 5 I S.There needs to be a traffic safety analysis of the intersection of North Tustin Avenue at 4`h Street. This intersection has a significant amount of peak hour and daily traffic and any increase in traffic generated by the proposed project could potentially Increase the collision rate at this intersection. RK has performed a review of the collisions at this intersection and the collision rate is significantly higher than would be expected at this type of intersection. The ten year average collision rate at this intersection is 037 collisions per million entering vehicles, whereas the expect rate is 0.24 collisions per million entering vehicles- Furthermore the most recent collision rate during the past three years (2016-2018) the collision rate has increased to 0.43 collisions per million entering vehicles. A further traffic collision analysis should be performed at this intersection to determine the cause of these collisions and if so what mitigation measures should be considered for this intersection, since the project will contribute additional traffic to this location. The collision rates and SWITRS data used in this analysis is included in Appendix B. NOISE IMPACT ASSESSMENT No preliminary noise study was conducted for the proposed project to prove that it is feasible from a noise impact standpoint. Although the project has been conditioned to prepare a study prior to building permits, a preliminary noise study should be prepared to ensure that the project would not have a significant noise impact to the surrounding areas. Typically noise studies for Express Car Washes are required during the entitlement process, not after the project is approved. Car washes generate a significant amount of noise at both the exit and entrance to the car wash tunnel and at the vacuum stations. This has to be assessed in advance of approval of the project to determine if any mitigation measures need to be implemented and if they are feasible- 2. The car wash tunnel is located at the very south end of the site directly adjacent to an existing office building that includes medical uses 4i-e- dentist office, etc.). These are noise sensitive land uses and high noise levels can be very disturbing to the medical uses. RK has measured noise levels that approach 95 dBA at the opening of a car wash tunnel and over 90 dBA at the vacuum stations-, this is a significant amount of noise. Attached are our measurements at a comparable car wash facility. A noise assessment is needed before the project is approved to determine the impacts to the adjacent sensitive uses and whether it is feasible to mitigate the noise generated from the project. engineering grDnp, Inc. 75A-71