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For Alternative. 2, where quarry access Project Trip Distribution y would be on Blewett Road, truck traffic was Alternative 2: Alternative Access Road distributed in a more dispersed fashion. The traffic distribution for Alternative 2. 35% 45% assumed that only trucks headed east Bird Rd Koster Rd 35% . 25% 25% 10% SR 132 would use Koster Road. All other loaded i trucks would head west on Blewett Road, 60% 5% 35% then proceed north on Bird Road to SR 1-580 6D% 60% 409 5% Blewett Rd 132 and the freeways. Empty trucks 5% site entering the quarry were assumed to use Koster Road, except for 1-580 trucks which 5% would use Bird Road. The distribution of lei Gallery truck trips for Alternative 2 is shown in 5 II Figure 4.4-3. Figure 4.4-3 t . For Alternative 3, all truck traffic would be Project Trip Distribution expected to use the proposed Vernalis Alternative 3: vernalis Interchange interchange. No truck trips were assumed j on Bird Road or Koster Road. The 35% 45% distribution of truck trips for Alternative 3 is Bird RdKoster Rd 35% 35% 15% 15% SR 132 'r shown in Figure 4.4-4. j! 95% ,. REGULATORY FRAMEWORK 1-680 Blewett Rd San Joaquin County General Plan 5% l i Site access may be provided due Ji. A guiding objective of the San Joaquin east to Koster Road if access rights directly to Bbd Road cannot be 1-5 Gaffery Rd County General Plan is "to provide a eccuired. 5 y roadway system that satisfies the needs in Figure 4.4-4 San Joaquin County for safe, efficient, convenient and reliable vehicle movement of people and goods through and within the k County." Toward this end, the General Plan calls for "a road system of adequate capacity !, and design to provide reasonable and safe access by vehicles with minimum delay." ' The General Plan identifies major roadway improvements that are needed in the County. Implementation of these improvements will rely on significant funds provided by the State of California through its State Transportation improvement Program (STIP) and recently apassed state bond measures. The improvements shown on the General Plan include: • The widening of SR 132 from 1-5 to the Stanislaus County line, and The Vernalis interchange. Federal and State Jurisdiction 16 Alternative 3 (Vernalis Interchange) would require both federal and state approvals because it would require access to the interstate (1-5) freeway system. In addition, any Draft Environmental Impact Report 4-43 ER-96-3 I