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Traffic Impact Study March 24,2004 Proposed RMC Pacific Mining Site Page 9 With Haul Route 2, the increase in traffic index would only occur in the northbound lane. The project will be required to contribute an equitable share of future pavement improvements. SR 132 between Interstate 580 and McCracken Road The road segment analyses indicate that the segments of SR 132 that consist of only one lane in each direction are currently operating at a level of service D. Where SR 132 is a four-lane divided highway, the road segment operates at acceptable levels of service. With construction of the project, similar levels of service are expected to result. This indicates that SR 132 should be widened to include four lanes in each direction in the near future. The project may be required to contribute an equitable share of the cost of the widening. With construction of two lanes in each direction, SR 132 is expected to experience acceptable levels of service through the year 2025. _ The project is expected to increase the 20-year traffic index on SR 132 between Bird Road and Interstate 5 from 13.0 to 13.5 with Haul Route 1. With Haul Route 2, the increase in traffic index would only occur in the eastbound direction. The project will be required to contribute an equitable share of future pavement improvements. Blewett Road between Bird Road and Interstate 5 Blewett Road currently operates at acceptable levels of service and is expected to continue to operate at acceptable levels of service with the project through the year 2025. The project is — expected to increase the 20-year traffic index from 10.0 to 11.5 with Haul Route 1. With Haul Route 2 the project will result in a westbound traffic index of 11.5 and an eastbound traffic index of 10.5. The project will be required to contribute an equitable share of future pavement — improvements. Blewett Road between Interstate 5 and Koster Road Blewett Road currently operates at acceptable levels of service and is expected to continue to operate at acceptable levels of service with the project through the year 2025. The project is expected to increase the 20-year traffic index from 9.0 to 11.5 with Haul Route 1. With Haul Route 2 the project will result in a westbound traffic index of 11.5 and an eastbound traffic index of 9.5. The project will be required to contribute an equitable share of future pavement improvements. Koster Road between Blewett Road and SR 132 The project will not utilize this portion of Koster Road with Haul Route 1. However, Haul Route 2 would likely require upgrades to the existing pavement section for a design traffic index of 9.0 in the northbound lane and 11.0 in the southbound lane. 7.0—FAIR-SHARE PERCENTAGE _ Many governing agencies require that a calculation of fair-share percentage (also referred to as pro rata or equitable share responsibility) be included in the traffic impact study report where future improvements are required, whether or not the improvements are the result of the specific — project studied. The fair-share percentage provides a measure of a project's share of the anticipated future improvements to the transportation network. The following equation is used by Caltrans to determine the fair-share percentage: