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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 />Figure 1: Project Location ...................................................................................................................2-2 <br />Figure 2: Surrounding Land Uses ...................................................................................................... ..2-3 <br />Figure 3: First Street Bridge - Downstream Side Looking North ..................................................... .. 2-4 <br />Figure 4: First Street Bridge, Upstream Side .................................................................................... ..2-5 <br />Figure 5: First Street Bridge, East Approach .................................................................................... .. 2-6 <br />Figure 6: First Street Bridge, West Approach ................................................................................... .. 2-7 <br />Figure 7: Existing Bridge Profile & Elevation .................................................................................. ..2-8 <br />Figure 8a: Project Plan ...................................................................................................................... 2-10 <br />Figure 8b: Bridge Section Views ...................................................................................................... 2-11 <br />Figure 9: Restriping Plans ................................................................................................................. 2-12 <br />Figure 10: 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 />Figure 13: 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 ...................................................... 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