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.RESPONSE TO COMMENTS FOR <br />CRAZY HORSE SQUARE <br />MITIGATED NEGATSVE DECLARATION <br />ER-2004-109 <br />FROM DEPARTMENT OF TRANSPORTATION <br />DISTRICT 12 <br />Due to the proximity to the SR-55 the Environmental Document should identify and mitigate <br />any and all potential signif cant permanent and temporary impacts, including but not limited <br />to, visual (lighting, signage, etc), traffic (access to ramps) noise, grading and storm water <br />runoff. <br />RESPONSE <br />A copy of the mitigation rrieasures that have been incorporated into the prof ect axe part of the <br />environmental document and are available for review. Although the proposed project could <br />have a significant effect on the environment, there will not be a significant effect in this case <br />because of revisions to the project and the mitigation measures placed on the project, and <br />agreed to by the applicant, have reduced each impact to below a level of significance. <br />2. Please check the storage queue length on the SB-55 off-ramp to Grand Avenue, especially <br />for right turn to make sure that will not back to mainline during peak hour. <br />RESPONSE <br />The SR-55 southbound off=ramp at Grand Avenue is approximately 975 feet in length, with <br />approximately 375 feet of a two-lane section, and the remaining 600 feet in a single lane, for <br />a total of approximately 1,350 feet of vehicle storage. Assuming 25 feet per vehicle, the <br />ramp would accommodate a queue of 54 vehicles before the queue backs up onto the <br />mainline. <br />The analysis evaluated future morning and evening peak hour operating conditions for <br />Opening Year With Project conditions using the Highway Capacity Software (HCS). The <br />results are summarized on Table A. Analysis worksheets are attached. Please see attached <br />documentation prepared by the traffic consultant. <br />Both the average peak hour queue and the 95~' percentile back of queue are reported. The <br />95th percentile back of queue means that the queue will be less than the reported queue 95% <br />of the time. The results of the analysis indicate that the projected peak hour queues with the <br />Crazy Horse project will not exceed the queuing capacity of the off-ramp, and will not back <br />up onto the mainline. <br />75A-169 <br />