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SUNOL BOULEVARD/I-680 IMPROVEMENTS PA&FD CONSULTANT will prepare Advance Planning Studies (APS) for the following structures: ✓ I-680 SB On-Ramp(Widen),approximate width is 26',approximate length is 174'. Use of cast-in-place pre-stressed box girder is assumed ✓ Special Design Retaining Wall under Abutment 1 at Pleasanton-Sunol RD UC, Approximate Length is 209'. Use of tie-back(ground anchor)wall is assumed ✓ Special Design Retaining Wall under Abutment 4 at Pleasanton-Sunol RD UC, approximate length is 267'. Use of tie-back(ground anchor)wall is assumed ✓ Special Design Retaining Wall under Abutment 1 of Railroad Bridge.Approximate length is 16'. Use of tie-back(ground anchor)wall is assumed ✓ Special Design Retaining Wall under Abutment 2 of Railroad Bridge.Approximate Length is 16'. Use of tie-back(ground anchor)wall is assumed ✓ Special Design Retaining Wall along NB Sunol Blvd. Approximate length of wall is 785'. Use of soil nail wall is assumed ✓ Special Design Retaining Wall along SB Sunol Blvd. Approximate length of wall is 127'. Use of soil nail wall is assumed ✓ Special Design Retaining Wall along SB Sunol Blvd. Approximate length of wall is 327'. Use of Caltrans Type 1 wall is assumed; because of high PGA, special design could be required. The bridge and special design wall APSs will be prepared in Caltrans format using Caltrans Office of Special Funded Project (OSFP) Information and Procedures Guide 3-2 and Caltrans Memos to Designers (MTD) 1-8. The APSs will include plans, APS Checklist, Design Memo and Itemized Cost Estimate. FourStructure Preliminary Geotechnical Reports (SPGR) will be prepared to provide geotechnical recommendations for the proposed structures. The APS Plans will show the following: 1. Plan views,Elevation views and Typical Sections showing the preliminary structure types recommendation. 2. Preliminary profile grade and superelevation diagram. 3. General dimensions for the structures such as overall lengths,widths, and depths. 4. Available vertical clearances. 5. General aesthetics recommendations. 6. Preliminary foundation types recommendation. 7. Preliminary abutment and bent type recommendation. 8. Approach slab, and barrier type The APS Design Memo will include the following: 1. Important or unusual design assumptions or structure features, 2. Local agency requirements such as aesthetics, improvements in the vicinity of the structure,or other obstructions. 3. Any special foundation requirements. 4. Any construction requirements, including limited site accessibility, vertical clearance restrictions, and limits on night time/day time work. 5. Record of discussions with Caltrans personnel concerning any key assumptions. Apn110,2020 20