Mount Umumhum Staging Area at Bald Mountain

The Mount Umunhum Staging Area at Bald mountain provides a launching point of departure for visitors to Mount Umunhum and the surrounding open space resources. It is a place to arrive, rest, view, anticipate, and enjoy the experience of the ridge line above San Jose and the South Bay. John Northmore Roberts and Associates provided conceptual design options, design development, construction documents and specifications as well as cost estimating and detailed stormwater management design for the 24 space parking lot, 4 parallel spaces along Mt. Umunhum road, rest room, accessible pathways, trail linkages and surrounding site.

The previously disturbed headwaters site was designed to retain, recharge, and treat stormwater on site. A cascade of three infiltration basins lines the northerly side of the parking lot with one more within the turn around. Each displays a native plant palette for the specific location and elevation. Stormwater runoff recommendations were summarized in a drainage report provided the MROSD with calculations to support C3 stormwater runoff requirements and 100 year storm management.

Construction completed Fall, 2014.

Sierra Azul Open Space Preserve, Santa Clara County, CA

1 acre

Estimate $319,000
Bid $313,000

Client: Midpeninsula Regional Open Space District

Engineer: BA Zuhdi Consulting Engineers

Open Space Staging Area
Remote Stormwater Management

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