People

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Dona Mann, PE, GE

Principal Engineer, Founder, President 

dona@a3geo.com

415.425.0247 

Dona Mann has 20+ years of geotechnical consulting experience in the Bay Area;  her specialties include water-related infrastructure, river restoration, liquefaction and landslide analyses, geotechnical construction management, public school construction and overwater construction.

 

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Timothy Sneddon, PE, GE

Principal Engineer,  

tim@a3geo.com

408.499.1465

Timothy Sneddon has 18+ years of geotechnical consulting experience in the Bay Area. His experience includes projects for roads, highways, buildings, schools, pipelines, landslides, dams, levees, and canals. His specialties include landslide and slope stability evaluations, liquefaction analyses, foundation design, forensic evaluations, and geotechnical construction management.

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Wayne Magnusen, PE, GE

Principal Engineer, Founder

wayne@a3geo.com

510.325.5724

Wayne Magnusen has 28+ years of geotechnical consulting experience in the Bay Area; his specialties include buildings, seismic retrofits, transportation infrastructure, landslide hazard/risk assessments,  hazard/risk mitigation designs, ground support and geotechnical alternatives analyses.

 

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Leeann Cobb

Office Manager

leeann@a3geo.com

510.610.6012

Leeann Cobb has 30+ years of experience in office management, business operations management, and human resources. Leeann currently works as A3GEO's office and business manager.

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Seren Moran

Business Relations

seren@a3geo.com

510.705.1664

Seren Moran has 7+ years supporting local small businesses in a variety of roles. Her current responsibilities at A3GEO include marketing and business relations. Seren strengthens the business by developing relationships with teaming partners and new clients.

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Robert Speidel, PE

Project Engineer

robert@a3geo.com

661.205.8124

Robert Speidel has 5+ years of geotechnical and environmental engineering experience. His current responsibilities include managing and conducting geotechnical field investigations utilizing geotechnical borings, cone penetration tests, downhole geophysical testing, and geotechnical instrumentation.

 

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Sarah Khosravani, PE

Project Engineer

sarah@a3geo.com

650.338.7205

Sarah Khosravani is a California-registered Professional Civil Engineer with a master’s degree in Geotechnical Engineering and 7+ years of experience working on geotechnical and foundation engineering projects in Northern California and North America. Sarah’s project experience includes civil, infrastructure, pipeline/utilities, commercial and municipal buildings and transportation.

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Dillon Braud, PE

Project Engineer

dillon@a3geo.com

225.439.0839

Dillon Braud is a Professional Civil Engineer with a master’s degree in Geotechnical Engineering and 7 years of experience working on geotechnical and infrastructure engineering projects in Louisiana and California. Dillon’s project experience includes infrastructure, pipeline/utilities, commercial and municipal buildings.

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Joseph Huynh, EIT

Staff Engineer

joseph@a3geo.com

909.489.8428

Joseph Huynh is certified as an Engineer-in-Training by the State of California, holds a master’s degree in Geotechnical Engineering and has 5+ years of geotechnical engineering experience on the West Coast of the United States. His experience includes earthwork, utilities, pipelines, roads, bridges and buildings.

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Allen Winders, EIT

Staff Engineer

allen@a3geo.com

209.613.9324

Allen Winders is certified as an Engineer-in-Training by the State of California and holds a master’s degree in Geotechnical Engineering. His responsibilities include conducting field investigations, geotechnical analyses, and construction observation and testing. 

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Eric Arico, EIT

Staff Engineer

eric@a3geo.com

916.838.4183

Eric Arico is certified as an Engineer-in-Training by the State of California, holds a Master's of Science in Computational Statistics, and has 8+ years experience working as an IT technician. His current responsibilities include construction observation and testing for projects involving earthwork, deep foundations and shoring.