The “Great Recession” has been an especially difficult time for developers and those of us who work with them. But as with previous recessions, this too will pass and all those development projects that went dormant in 2008 will suddenly be on the front burner. How we respond to the environmental conditions at these sites [...]
Archive for March, 2010
Current Environmental Issues in Redevelopment
Posted in Environmental, tagged brownfield, California, contamination, developers, DTSC, due dilligence, Environmental, esl, great recession, mitigation, permitting, Philip Smith, redevelopment, regulators, regulatory agency negotiation, remediation, risk assessment, soil vapor, standards, Treadwell & Rollo, vapor mitigation, vapor mitigation systems, vms on March 26, 2010 | Leave a Comment »
Frank L. Rollo Celebrates 20 Years at Treadwell & Rollo
Posted in Uncategorized, tagged 49ers Stadium, AT&T Park, Building Industrial Conference Board, City of Hope Award, co-founder, Disney Museum, Engineering Criteria Review Board, environmental engineering, Four Seasons, Frank L. Rollo, Geotechnical, Google, liquefaction, litigation, Loma Prieta, Millennium Tower, One Rincon, peer review, Phoenix Award, Pixar, San Francisco, San Francisco Bay Conservation and Development Commission, seismic engineers, SFMOMA, slope stability, Treadwell & Rollo, Yahoo on March 19, 2010 | Leave a Comment »
In the field of geotechnical and environmental engineering, the Treadwell & Rollo name is synonymous with integrity, professionalism, quality, and technical excellence. Frank L. Rollo, Principal Engineer and one of the firm’s Co-Founders, is highly-regarded for these same qualities as an individual and as a professional. And for the past 20 years, Frank has played [...]
Failure of a Segmental Retaining Wall – Lessons Learned
Posted in Geotechnical, tagged expert, failure, geogrid, Geotechnical, groundwater, Hadi J. Yap, Northern California, retaining wall, segmental, storm drain, subdrains, Treadwell & Rollo on March 12, 2010 | Leave a Comment »
Groundwater is the primary cause of many geotechnical problems. If not properly controlled, groundwater can cause retaining wall movements. A case history of a retaining wall, where groundwater and inadequate subdrains contributed to its failure, is presented in this article written by Principal Engineer Hadi J. Yap, PhD, PE, GE. In the late 1990s, a [...]
