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ii ; Ij ' C-2� Potentially Significant Impact: Increased Traffic at Roadways, Freeway Rams and i Intersections Resulting From Proiect Phase 11 Interchange, With Flyover Rams Conditions (Impact T-2) k Under 2015 proposed project conditions with Phase II interchange improvements,'traffic in the project area will increase. However, based on trip generation for assumed land uses and planned intersection, interchange, and roadway improvements, roadways and intersections in the project area are expected to operate at LOS D or better. This impact is,therefore, considered less than significant. Mitigation measures have been identified, however, to ensure that traffic operating conditions remain at LOS D or better as the project site is developed. Finding a i li Changes or alterations have been required in, or incorporated into,the project which avoid or jl substantially lessen the significant environmental effect as identified in the EIR. I i Statement of Fact ; This impact will be reduced by the following: • Before each phase of development on the project site, the Department of Aviation in coordination with the Department of Public Works shall evaluate and monitor traffic operating conditions at the critical roadways and intersections identified in the traffic study. If it is determined that traffic operating conditions would not remain at LOS D or better with implementation of the planned development or if actual traffic operation l conditions are not at LOS D or better, planned roadway and intersection improvement i� measurements shall be implemented before approval of additional development on the �i project site to ensure that operating conditions remain at LOS D or better. Planned l� improvements include measures such as the addition of turning lanes at intersections and the addition of lanes to roadways. Before each phase of development on the project site, the County shall coordinate with the City of Stockton and Caltrans on the evaluation 1 and monitoring of traffic operating conditions on critical roadways and interchanges. C-3� Potentially Si nificant Im act: Cumulative Traffic Im acts ii The Stockton Metropolitan Airport Master Plan Traffic Study Addendum (KASL Consulting ;i Engineers, 1998) contains a cumulative impact analysis that evaluates impacts related to -cumulative development of the project site, planned growth in the City, and the development of a I major theme park in Stewart Tract, located approximately 15 miles southwest of the airport property. Tables 13-2, 13-3, and 13-4 summarize the results of that analysis for roadways, freeway ramps, and intersections. i3 For roadways, potential measures include construction of a new roadway south of the proposed it airport and parallel to Arch-Airport Road and widening of Airport Way south of Charter Way to eight lanes. Potential improvements to intersections are summarized in Table 134A. All study area intersections can be mitigated to LOS 11 or better with the exception of intersections at i Arch-Airport Road and "B" Street and Airport Way and Eighth Street,which is almost two miles north of the project site. Both of these intersections have volume-to-capacity (V/C) ratios of i; 0.92, which is within two percent of a V/C of 90 percent, which would be LOS D. The cumulative analysis included increasing annual enplanements from two million to four million, adding 40 acres of commecial/industrial development at the airport, buildout of the City of Stockton i Sari Joaquin County ER-96-1, et al\Stockton Airport Community Development Page 33 �i