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TJ10N Mr. Joshua Pack, P.E, Traaspsrlntlan May 29, 2008 Coroul4nn Page b Proposed Project Trip Generation TJKM estimated trips for the proposed Ironwood Active Adult Community Development based on Trip Generation (7th Edition), published by the Institute of Transportation Engineers (ITE). TJKM utilized ITE Code 251 (Senior Adult Housing -Detached) for the proposed project. Based on rates for this ITE Code, the proposed project is expected to generate approximately 587 daily trips on an average weekday, including 30 trips during the a.m. peak hour and 53 during the p.m. peak hour. The proposed project trip generation is shown in Table I. Table 1: Trip Generation -Proposed Project Land Use Daily A.M. Peak Hour P.M. Peak Hour ITE Code f ) SiZO Rate Trips Rate In% Out% In Out Total Rate In% Out% In Out Total Trips Trips Trips Trips Trips Trips Senior Adult i l Housing d ~ - 587 - 38 62 1I 19 30 - 61 39 32 21 53 detached (251) source: I np Generation (/th Etlition), Institute of Transportation Engineers (2003) Note: du =Dwelling Unit Daily Trip Rate = Ln(T) =0.85 Ln(X) + 2.38 A.M. Trip Rate = Ln(T) =0.86 Ln(X) - 0.63 P.M. Trip Rate = Ln(T) =0.72 Ln(X) + 0.58 Project Trip Distribution and Assignment TJKM developed trip distribution for the Ironwood project based on existing City counts, knowledge of the study area, and consultation with City staff. The resulting expected projett trip distribution is as follows: • 30 percent to/from Santa Rita North • I S percent to/from Santa Rita South • 5 percent to/from Valley Avenue West • 30 percent to/from Stanley Blvd West • 15 percent to/from Stanley Blvd East • 5 percent to/from Bernal Avenue South The proposed project trips were assigned to the above roadways based on the calculated distribution. Resulting volumes for Existing plus Approved Project plus Project Conditions are shown in Figure 5. The Existing plus Approved Project Synchro file, which includes signal timings and lane configurations, was used as the basis for developing the Existing plus Approved Project plus Project Synchro file. Level of Service Analysis Results -All Conditions Table II shows the resulu of an intersection level of service (LOS) analysis for all three study scenarios utilizing the Highway Capacity Manual (HCM) 2000 methodology. Attachment A details the intersection LOS methodology, and Attachment B contains the LOS calculation sheets. It should be noted that under all scenarios, a second westbound left turn lane was assumed at the Valley Avenue /Santa Rita Road intersection (see Figure 2). This is a funded Ciry improvement that is expected to be in place in the near term prior to completion of the Ironwood Active Adult Community development.