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4.Minor Revisions to the Draft Environmental Impact Report r Other Impact Issues impaet 4.4.3: if Haul Route Option 2 is approved,projeet generated haul truck traffie wouId eause an inereased traff:e safety L.,.-.,..d at the intersection of State Route 132 find Koster Road. This would be a patentially signifleant impact.- Under the Option 2 haul reute seenario,the pirejeet would add inbound tmffie,mest netieeably haul k t-efe te the loft t....., and right t..-n movements fire.., SR 132 to Kester Read Currently there are no left tuFn lanes, and ne full width right turn lanes, on SR 132 at Kest@ a. Raad ►� speed,but the shouldefs are net wide e. eugh to fully titee......nedate a 1,..,.1 t.,..,1. This..eeld repfesefft a signifieant safky hazard because there is enly one tFavel lane on SR ' and 4affie QR 132 travels et high speeds .. Mitigation Measure AAS A A 2. if l4 . 1 Route Option 2 is d the - 'eet e., lieant aidd be ` approved,the j.,ej.. »Yi.......... interseetien of SR 132 and Koster Read (ineluding left turn lanes and aeeelemfien/deeelefation lanes). i. pnet Signif1.,. nee After Mitigation if Mitigation Measure A A 3 were funded and implemented, the tFafCe sa fi t. ifnpae4,,weld be -educed to a less than ,. gni fieant level. Impact 4.4.4 4.4.3: Project-generated traffic could result in accelerated pavement deterioration on study area roadways. This would be a potentially significant impact. 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 following table presents a summary of the traffic index TI analyses. The supporting calculations are presented in Appendix E of the traffic impact study. The TI analyses suggest that the proposed project and Haul Route 1 will create potential pavement impacts on Blewett Road between I-5 and Koster Road. The analyses also suggest that the proposed project and Haul Route 3 will create potential pavement impacts on Blewett Road between Koster Road and Welty Road.However, it is noted that the TI analyses are based on a 20-year pavement design life. Therefore,if Haul Route 3 if considered only as a short-term option then a significant impact would not be identified. LConsidering that this traffic impact study is not a design-level document,it is not recommended that the traffic index values presented herein be used for design purposes. More extensive traffic counts would be required for design;however,this information provides some estimate of the ` need for roadway upgrades resulting directly from project-generated traffic. Cemex Vernalis Quarry Mining and Reclamation Project 4-39 ESA/203015 Final Environmental Impact Report June 2008