Geosoils Consultants

GEORGE LARSON

Mr. Larson is a Registered and Certified Engineering Geologist with a B.S. in Geology from The University of Southern California; he completed Post-Graduate studies with the same prestigious institution. He is a Principal Engineering Geologist for GeoSoils Consultants, Inc., which he founded in following his previous venture: GeoSoils, Inc.  In addition to his extensive body of work in the field of Geotechnical Engineering, he also served as a Special Agent for the U. S. Army Counter-Intelligence Corps., New York Field Office.

Mr. Larson specializes in the richly diverse California geology, providing  related engineering expertise for a variety of project types, including: large hillside residential, commercial (hospital, school and university sites), recreation projects (including minor dam sites), and groundwater investigation studies in the Los Angeles, Ventura, and Kern County areas of Southern California. This experience extends from preliminary EIR studies, through detailed investigation, grading plan review, grading monitoring, and forensic studies which have resulted in the safe grading of millions of cubic yards of earth in areas of landslides, earthquake faults, soft sediments, hard rock, high/steep topography, and high ground water levels.

Major projects which have been directed or managed by Mr. Larson include: the 3000-acre Long Canyon Development Wood Ranch master-planned community in Simi Valley, the master-planned community of Stevenson Ranch, the master-planned community of Porter Ranch, Beverly Park Estates, Palisades Highlands project, and Mulholland Estates. Challenges encountered and mitigated within these projects included: possible active faults, major fault zones, large ancient landslides, steep terrain, stability of natural and graded slopes, liquefaction, compressible alluvial materials,  thick potentially unstable soil and rock debris on descending natural slopes and rear pad areas, diatomaceous earth fill material, and stabilization of numerous landslides…the largest containing over two million cubic meters of earth!

Mr. Larson has authored and co-authored numerous publications from 1966 to the present day for the Association of Engineering Geologists, the American Association of Petroleum Geologists, and many others. He is a member of the Association of Engineering Geologists, a member of the National Building Codes Committee (A.E.G.), past Chairman for both the Building Codes Committee and the Professional Ethics and Practices Committee (A.E.G.), a member of the Consulting Engineering Geologists, and a member of the Grading Codes Advisory Board for the City of Los Angeles.

 

RUDY RUBERTI

Mr. Ruberti is a Registered and Certified Engineering Geologist with a B.A. in Geology from Humboldt State University, California. He is a Principal Engineering Geologist with GSC, where he has worked for over 20 years on a diverse cross-section of geologic and geotechnical projects in Palmdale, Simi Valley, Malibu, Agoura Hills, and other communities within the Los Angeles, Orange, and Ventura counties.

He has performed extensive field investigations involving landslide and fault mapping with subsurface exploration, overseen the mass grading of large hillside subdivisions, landslide removal, and slope stabilization; additionally, Mr. Ruberti has overseen pile supported arch structures to span environmentally sensitive stream beds, had extensive experience locating the age of faulting for structural setbacks and related ground shaking/deformation analyses, as well as headed forensic studies, seismic studies, and preliminary geologic investigations for master-planned residential communities, public works (roads, water tanks), public facilities (colleges, schools, parks), and countless other commercial and residential projects. Challenges faced during these projects include: stability of slopes and landslides, soil expansion, scour and sediment transport, control of subsurface water, seismicity, fault mapping, and the grading of hundreds of millions of cubic yards of earth in areas of landslides, faults, soft sediments, hard rock, steep topography, and high ground water levels.

 

DAVE SHERMAN

Mr. Sherman is a Registered and Certified Engineering Geologist who received his education at both the University of Alabama and USC. He served in the U.S. Army at both West Germany and Vietnam from 1968-1972, after which he entered the private sector to work with GSC.

He has extensive experience with large hillside residential, commercial, and recreational projects involving the grading of hundreds of millions of cubic yards of earth within landslide areas, earthquake faults, soft sediments, hard rock, high steep topography, and high groundwater levels; this experience extends from preliminary EIR studies to detailed investigation, grading plan review, grading monitoring, and forensic studies. Key project responsibilities have included geotechnical engineering and seismic investigation, geologic inspection, plan reviews, grading observation, and testing of municipal (city, schools, parks, public works), large-scale residential, commercial (retail, golf courses), and multi-use developments in and around the City of Santa Clarita, San Pedro, Calabasas, Simi Valley, Porter RanchStevenson Ranch, Castaic, Rio Dulce, Pacific Palisades, Beverly Hills, Sherman Oaks-Mulholland, and other communities throughout Southern California. Challenges met include active faults, large ancient landslides, large active landslides, steep terrain, graded slope stability, liquefaction, compressible alluvial materials, settlement of deep alluvium, ground water, seismicity, slope stability and steep natural slopes issues, buttressing, extreme topography, thick unstable soil and rock debris on descending natural slopes and rear pad areas, diatomaceous earth fill material, and rock disposal.

Mr. Sherman is a member of the Association of Engineering Geologists and has published “Earthquake effects on undeveloped lots, Area of Holmes Place and Fitzgerald Avenue, Tract 33698, Stevenson Ranch, California” in AEG Fieldtrip Guidebook, “Ground Failure during the January 17, 1994 Northridge Earthquake”, dated November 11, 1995

 

LANCE PUTNAM

Mr. Putnam is a Registered and Certified Engineering Geologist with a B.S. in Geology from Chico State University. He is a Project Engineering Geologist with GSC, where he has worked for 15 years on a diverse cross-section of geologic and geotechnical projects in Southern California – specifically within the Los Angeles, Orange, and Ventura counties.

He has performed extensive field investigations involving landslide and fault mapping with subsurface exploration, overseen the mass grading of large hillside subdivisions, landslide removal, and slope stabilization; additionally, Mr. Putnam is experienced with seismic studies as well as preliminary geologic investigations for master-planned residential communities, public works (roads, water tanks), public facilities (colleges, schools, parks), and many other commercial and residential projects. Challenges faced during these projects include: stability of slopes and landslides, soil expansion, scour and sediment transport, control of subsurface water, seismicity, fault mapping, and the grading of millions of cubic yards of earth in areas of landslides, faults, soft sediments, hard rock, steep topography, high ground water levels, and dewatering.

 

RON CASTRUITA

Information coming soon!

 

JAMES VAN METER

Mr. Van Meter is a Registered and Certified Engineering Geologist who obtained a B.S. in Geology from California State University Northridge. He has been with GSC for over 20 years, during which time he has conducted detailed investigations, forensic studies, mapping of geologic structures, fault trenching and seismic studies, supervised removals of unsuitable soils and landslides, grading monitoring of compaction, performed landslide mitigation, and prepared geologic/geotechnical engineering recommendations to prevent the potential of slippage, settlement, and geologic hazards in proposed developments. He has conducted several forensic distress investigations for various insurance companies, including Fireman’s Fund and State Farm.

Mr. Van Meter is experienced in large hillside residential, commercial, and recreational projects throughout the Los Angeles, Ventura, Kern, and Riverside Counties which involved the safe grading of millions of cubic yards of earth. Key projects include Mulholland Estates in Beverly Hills, Hillcrest Park in Castaic (consisting of hundreds of single-family residences, two schools, roads), Carey Ranch in Sylmar, Clougherty Ranch in San Francisquito Canyon, the master-planned community of Porter Ranch, and the Hollywood Water Quality Improvement Project (construction of 30-million gallon water tanks and tunnels) for the Department of Water and Power. Challenges met during these projects include active landslides, mitigation of ancient landslides, earthquake faults in major fault zones, buttresses, unstable soils, extreme topography, thick unstable alluvial soils, soft sediments, hard rock, and high groundwater levels.

Mr. Van Meter is a member of the Association of Engineering Geologists.

 

Susan Berger

Information coming soon!