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BACKGROUND The Junipero Street and Independence Drive traffic calming study prepared by the City's Traffic Engineer identified the need to construct a second left-turn lane from westbound Bernal Avenue onto southbound Sunol Boulevard. The additional left-turn lane will help mitigate the Lund Ranch II traffic impacts. The project will increase the capacity of the signalized intersection to serve the left-turn movement without affecting the overall signal timing of the intersection. The additional lane will allow the queue of motorists turning left to clear the intersection without altering the green light time given to the movement, or the green light time given to any other intersection movement. In addition to the second left-turn lane, the project will include pedestrian and bicycle improvements at the intersection in conformance with the City Complete Streets policy. On December 18, 2018, City Council approved a professional services agreement in the not-to-exceed amount of $108,000 with HMH to develop design alternatives for the construction of a second westbound left-turn lane from Bernal Avenue onto southbound Sunol Boulevard. It was understood that widening Bernal Avenue as required to construct another left-turn lane would potentially require construction of retaining walls and acquisition of adjacent land. The agreement was for HMH to develop design alternatives to the 35 percent complete level that considered both physical impacts to adjacent properties, as well as right-of-way acquisition requirements. When complete, City Council will be presented with the preferred design alternative, along with a recommendation to approve an amendment to the HMH agreement to complete the design and prepare biddable construction documents for the preferred alternative. The amendment before City Council at this time is for HMH to prepare an appraisal and landscape design concepts that will help to clarify the preferred alternative by allowing staff to understand the PUSD Board's concerns or position prior to a recommendation on how to proceed being brought before the City Council. DISCUSSION HMH completed the alternative designs for the intersection and identified three potential intersection layouts. The first alternative is to widen the intersection to the north, into the Pleasanton Unified School District (PUSD) property. This option has the best geometrics for the intersection, the lowest cost of construction, and will not require any major retaining walls. This alternative will require some heritage trees (in declining health) to be removed along PUSD property frontage on Bernal Avenue, and requires acquisition of approximately 5,400 square feet of property from PUSD. The second alternative is to widen the intersection to the south, into the Pleasanton Hills Homeowners Association (HOA) hillside. This option is the most expensive due to construction of a retaining wall required to retain the steep hillside. The retaining wall would vary in height, but the portion immediately adjacent to the intersection of Bernal Avenue and Sunol Boulevard would be 10 feet tall. The road geometrics would also Page 2 of 4