Alternative Development Clause Samples

Alternative Development. After reviewing the findings of the Technical Memorandum with County staff, Omni-Means will provide up to two (2) preliminary layouts for each of the intersections of CR 98 with CR 31 (▇▇▇▇▇▇ Boulevard ), CR 32 (▇▇▇▇▇▇▇ Boulevard), and ▇▇▇▇▇▇▇▇▇ Drive, for a total of six (6) layouts. For each alternative, Omni-Means will provide a conceptual layout, including: ♦ Innovative enhancement measures such as illuminations ♦ Signing and striping ♦ Pedestrian and bicycle facilities ♦ Horizontal control ♦ Geometric elements including: ♦ Curb geometry ♦ Lane widths ♦ Channelization (including approach speed reduction measures) ♦ Lane transitions ♦ Pavement markings ♦ Conform conditions, including: ♦ Typical sections of each leg and the roundabout circulatory roadway and central island ♦ Additional speed reduction design elements ♦ In addition, exhibits will be prepared showing the: ♦ Fast paths ♦ Decision sight distances ♦ Approach view angles ♦ Bus/truck/farm equipment truck turns Included in the response to comment from the County's review of the exhibits, Omni-Means will provide a recommendation on any additional needs for survey data.

Alternative Development. ▇▇▇▇▇ ▇▇▇▇▇▇▇ Associates (BCA) will prepare preliminary level calculations and sketches to confirm the structural concepts for improvement alternatives that contain floodwalls. Based on the preliminary mapping, it appears that roughly 7.5 miles of levee will require improvements which will likely include floodwalls. One alternative is anticipated to include a sheet pile wall with a maximum design height of roughly 3.5 feet with a concrete cap and fascia on one or both sides. Geotechnical recommendations will be provided by ENGEO. Architectural treatment alternatives developed by ▇▇▇▇▇▇▇▇▇-▇▇▇▇▇▇-▇▇▇▇▇▇▇▇▇ (BFS) are anticipated in the floodwall elements (with feasibility confirmed by BCA). A second floodwall type, supported on spread footings, is anticipated to be required for specialty locations such as below the existing San Mateo Bridge. Additional areas likely requiring special consideration during design include the following:  Lakeside Drive: Floodwall system must accommodate vehicle access along Lakeside Drive.  Lagoon Tide Gate: This area will preclude the use of sheet piles on the existing structure. Special detailing will be required.  Existing pedestrian overcrossing modification near the ▇▇▇▇▇▇▇▇ office building. The existing structure will need to be raised on the Bay Trail side to accommodate raising the levee/trail. Modification to the existing abutment/foundations will be required.  San Mateo Bridge: Consider a second alternative to tie the proposed floodwall system into the existing bridge abutments which are already raised several feet above original grade.  Werder Pier: The existing structure cannot be easily crossed by the floodwall system. Special consideration in floodwall layout/ details will likely be required.  Central Lagoon Intake: This area will preclude the use of sheet piles on the existing structure. Special detailing will be required.  Central Lagoon Outlet: This area will also preclude the use of sheet piles on the existing structure. Special detailing will be required.  O’Neill Slough Tide Gate: The improved levee must tie into the tide intake structure for San ▇▇▇▇▇’▇ ▇▇▇▇▇▇ Lagoon, which was designed by ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇ and BCA in 2004.