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BACKGROUND The Tri-Valley Transportation Council (TVTC) adopted the Tri-Valley Transportation Plan/Action Plan (TVTP/AP) for Routes of Regional Significance in 1995. The TVTP/AP was later updated in 2000, 2009, and 2014. The Plan is a mutual understanding and agreement on Tri-Valley transportation concerns and recommendations for improvements. One of these improvement projects is State Route 84 Corridor Improvements: 1-580 to 1-680 (Project 2A). In 1998, through a Joint Exercise Powers Agreement (JEPA), the seven member agencies that comprise the TVTC approved the Tri-Valley Transportation Development Fee (TVTDF) program. The TVTDF is intended to allocate fair share costs for the regional projects identified in the TVTP/AP. In 1999, the TVTC adopted a Strategic Expenditure Plan (SEP) which identified priorities, project sponsors, and funding for TVTDF projects. The TVTC updated the SEP in 2004, 2011, and 2017. The SEP originally established a funding plan for eleven regional transportation projects (List A). The TVTC then expanded this list to add 11 new projects (List B). In 2008, the TVTC adopted a TVTC Fee Nexus Study (Nexus Study). The TVTC completed a Validation Review of the Nexus Study in 2017. The Nexus Study summarizes the status of the 22 projects, estimates revenues from the TVTDF over a 10-year horizon, and provides a funding plan for the remaining projects. One of these improvements is State Route 84 Expressway (1-580 to 1-680). Several parts of the State Route 84 Expressway are currently in construction and have been following the Phased Project Priority List. The next priority on the project list is the design and construction of Segment 5 of SR-84 Widening between 1-680 and Pigeon Pass. DISCUSSION A collaborative effort between the Alameda County Transportation Commission, Caltrans, and the Cities of Pleasanton, and Livermore has resulted in great progress along SR 84 over the last few years. The Tri-Valley Transportation Development Fee plays a critical role in ensuring the continued progress along SR 84 between 1-580 and 1-680. SR 84 Expressway (Project 2A) consists of five segments: • Segment 1 — 1-580 to Jack London Boulevard • Segment 2 — Jack London Boulevard to a point roughly halfway between Concannon Boulevard and Stanley Boulevard • Segment 3 — Halfway between Concannon Boulevard and Stanley Boulevard and Ruby Hill Drive • Segment 4 — Ruby Hill Drive to Pigeon Pass • Segment 5 — Pigeon Pass to 1-680 Page 2 of 3