Providing premier environmental and geotechnical solutions since 1988.

America Center

Santa Clara County

Treadwell & Rollo is providing geotechnical and environmental consultation for this 70-acre shoreline development of a former landfill.  The project consists of four six-story buildings, a hotel, and a large ...

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Contra Costa Waste Service Landfill

Contra Costa County

Treadwell & Rollo provided monitoring, remedial planning, and design of landfill closure services for this Superfund Landfill site.  This work included a Water Quality Sampling and Analysis Plan, groundwater monitoring ...

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EcoCenter

San Francisco County

Located at Heron's Head Park, a former landfill, this urban educational center was built using recycled materials and boasts a vegetation roof. Now open, the building operates 100 percent by ...

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Sierra Point

San Mateo County

Treadwell & Rollo provided environmental and geotechnical services for Sierra Point, a shoreline development located on a former landfill.  Our services included design and construction support for steel-framed office buildings, a ...

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