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Revised Traffic Impact Study March 27,2008 — Proposed CEMEX Mining Site Page 13 6.5—Weaving,Merge, and Diverge Analyses — Freeway weaving and ramp analyses at the existing I-5/SR 132 interchange were performed using HCS+ software. The results are presented in Table 7 and the analysis sheets are provided in Appendix D. The analyses indicate that the interchange is expected to operate at acceptable levels of service through the year 2025 with the Project based on the projected traffic volumes. The only exception is that the SR 132 westbound merge from southbound I-5 may operate at a level of service D in the future with or without the proposed Project. This is not considered a Project-specific significant impact. Table 7 — Weaving,Merge,Diverge Level of Service Summary—Weekday A.M.Peak Hour Near- Near-Term Cumulative Cumulative Location Existing Term With Project Without With Project — WithoutJA Haul Project Haul Haul Project Route 3 Route 1 Route 3 I-5 NB Diverge to EB SR 132 A A A A A A _ I-5 NB Weave at SR 132 A A A A A A I-5 NB Merge from WB SR B B B B B B 132 I-5 SB Diverge to WB SR 132 A A A A A AI-5 SB Weave at SR 132 A A A A A A I-5 SB Merge from EB SR B B B B B B B 132 SR 132 EB Diverge to SB I-5 A A A A A A A — SR 132 EB Weave at 1-5 A A A A A A A SR 132 EB Merge from NB B B B B B B B I-5 — SR 132 WB Diverge to NB 1-5 A A B B B C C SR 132 WB Weave at I-5 A A A A B B B SR 132 WB Merge from SB C C C C D D D — I-5 6.6—Traffic Index Analyses The traffic index (TI) is a measure of the number of equivalent single axle loads (ESALs) expected over the design period, and is described in detail in the Caltrans Highway Design Manual. The existing ESALs on Blewett and Bird Roads were estimated by performing 24-hour traffic counts and by a review of the Environmental Impact Reports for Brown Sand and Gravel and Teichert — Aggregates. The Project traffic is added to the expanded average daily truck traffic to evaluate the TI with the Project. The worst-case impact is based on an annual production of 4 million tons per year. A 20-year expansion factor based on an annual growth rate of 3.0 percent was applied to non- project truck traffic volumes. Table 8 presents a summary of the TI analyses. The supporting calculations are presented in Appendix E.