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LSA ASSOCIATES, INC. INITIAL STUDY/MITIGATED NEGATIVE DECLARATION <br />JULY 2010 FIRST STREET BRIDGE REPLACEMENT PROJECT <br />CITY OF SANTA ANA <br />FIGURES AND TABLES <br />FIGURES <br />Figure1: Project Location...................................................................................................................2-2 <br />Figure 2: Surrounding Land Uses........................................................................................................2-3 <br />Figure 3: First Street Bridge — Downstream Side Looking North ....................................................... <br />2-4 <br />Figure 4: First Street Bridge, Upstream Side......................................................................................2-5 <br />Figure 5: First Street Bridge, East Approach...................................................................................... <br />2-6 <br />Figure 6: First Street Bridge, West Approach..................................................................................... <br />2-7 <br />Figure 7: Existing Bridge Profile & Elevation....................................................................................2-8 <br />Figure8a: Project Plan......................................................................................................................2-10 <br />Figure 8b: Bridge Section Views......................................................................................................2-11 <br />Figure9: Restriping Plans.................................................................................................................2-12 <br />Figure10: Project Phases..................................................................................................................2-14 <br />Figure 11: Bridge Construction/Staging — Stage 1............................................................................2-15 <br />Figure 12: Bridge Construction/Staging — Stage 2............................................................................2-16 <br />Figure13: Typical Section................................................................................................................2-17 <br />Figure 14: Bicycle Trail Detour for Phase 1......................................................................................2-19 <br />Figure 15: Bicycle Trail Detour for Phase 2......................................................................................2-20 <br />Figure 16: Bicycle Trail Detour During Overhead Construction...................................................... <br />2-21 <br />Figure 17: Modeled Noise Barrier and Receiver Locations..............................................................2-23 <br />TABLES <br />Table 2.1: Responsible Agencies and Other Approving Agencies....................................................2-25 <br />Table 4.1: Community Noise Equivalent Level (CNEL) Calculations With and Without Project ... 4-28 <br />Table 4.2: Typical Construction Equipment Schedule......................................................................4-32 <br />Table 4.3: First Street Bridge Widening Project Level of Service Summary...................................4-40 <br />ii <br />20A-7 <br />