It’s been a great experience working with everyone at Cornerstone over the past few years. You guys are top drawer when it comes to quality product, professionalism and customer service. I hope I get the opportunity to work on future projects with Cornerstone.

— Project Manager, David J. Powers & Associates, Inc.

What’s most impressive about Cornerstone Earth Group is their solutions-oriented focus. Many consultants seem to make work for themselves in environmental remediation. Cornerstone is the exact opposite. With their past experience and solid relationships with regulators they seem to get to the finish line with little fanfare and a true endgame for all stakeholders.

— Vice President, Pacific States Environmental Contractors

Environmental

Once environmental conditions are understood, we help you compare environmental liabilities with your redevelopment plans, providing you the information needed to make an educated decision about your investment. We help minimize the technical and regulatory complexities through strategic solutions that fuse technical expertise with creativity and practicality. For simple to complex environmental liabilities and risks, rely on Cornerstone Earth Group’s team of professionals to add value to your plans.

Our Environmental Services Include:

Phase I Environmental Site Assessments
Preliminary Endangerment Assessments
Phase II Soil, Soil Vapor and Groundwater Quality Investigations
Soil Profiling for Import and/or Export
Soil Vapor Intrusion Evaluations
Indoor Air Monitoring
Vapor Mitigation Design
Contaminant Fate and Transport Modeling
Aquifer Pump Tests
Well Design and Installation
Geophysical Surveys
Human Health Risk Assessments
Remediation Design and Implementation Services
Soil Management Plans
Dust Monitoring during Construction

Geotechnical

Cornerstone Earth Group integrates geotechnical engineering, engineering geology, earthquake engineering and construction services to facilitate cost-effective site selection and design of project improvements including foundations, retaining structures, pavements, shoring, site earthwork, site mitigation, and utility installation. Our Principal Engineers’ experience, technical capabilities and construction expertise allow us to develop practical design solutions to meet your project requirements. We tailor our services by listening to you and your design team, and sharing our experience with you. We understand the importance of clear and concise communication and of maintaining a consistent project team during the design and construction phases to keep projects on schedule and on budget. For every dollar you spend on our design services, our goal is to save you ten dollars in construction. You can depend on Cornerstone Earth Group to provide intelligent geotechnical engineering solutions that add value to your project.

Our Geotechnical Services Include:

Foundation Investigations
Site Selection / Due Diligence Investigations
Geologic Hazards Clearance
Earthquake Engineering
Seismic Evaluations and Site Response Spectra
Liquefaction Analysis
Slope Stability Seismic Hazard Analysis
Pavement Design, Evaluation, and Repair Recommendations
Excavation Shoring / Dewatering Consultation
Utility Installation / Microtunneling Recommendations
Earthwork Recommendations
Retaining Wall Recommendations
Structural Soil Recommendations
Sustainable Design Input
Levee Design, Evaluation, Review Services
Soil and Rock Mechanics
Field and In-situ Testing
Laboratory Testing Services
- DSA Approved LEA No. 245
- AASHTO RE:Source Accredited R18, D3740 (Soil)

Construction

Cornerstone Earth Group works closely with you, your design team, and your general contractor to help keep your project on schedule and on budget during construction. From plan reviews to field observation and testing services, our experienced engineers, geologists, construction managers and engineering technicians will provide the oversight needed to deliver value-added services that help meet your construction requirements. In addition, our construction staff works diligently to help obtain the appropriate level of testing and documentation to keep your project in compliance with public agency requirements. Our Principal Engineers are accustomed to anticipating problems during construction and work proactively to help avoid them. If problems do arise during construction, we develop responsive, practical and cost-effective solutions to keep your project on track. As with any construction project, we understand that occasionally you may have urgent needs and we are accustomed to these demands. Our field staff is in constant communication with our office, and the needs of our clients’ projects are constantly being reviewed and re-scheduled each day, as projects require. For a successful construction project, put Cornerstone Earth Group’s experienced professionals to work for you.

Our Construction Services Include:

Foundation Observation
Earthwork Observation / Testing
Erosion Control Assessment
Utility Trench Backfill Testing
Pavement Testing
Laboratory Testing Services
- Sieve Analysis
DSA Approved LEA No. 245
AASHTO RE:Source Accredited R18, D3740 (Soil)
Retaining Wall Backfill Testing
Excavation Shoring / Dewatering Consultation
Recycled Materials / Sustainable Design Input (LEED)
Driven Pile Observation / Analysis
Drilled Pier Observation / Analysis
Ground Improvement Observation / Analysis
Slope / Landslide Mitigation
Value Engineering Consultation
Soil Stabilization / Chemical Treatment Recommendations
Piezometer Installation and Monitoring
Inclinometer Installation and Interpretation
Floor Level Surveys

Drone Services

Cornerstone Earth Group incorporates the latest drone aerial imagery technology to manage your project safely and efficiently, from pre-development planning through completion. This capability is especially helpful during the geotechnical investigation and environmental site assessment phases. Utilizing our drone capabilities, we can quickly give you a comprehensive 360 degree view of your site, revealing potential impacts and concerns that may otherwise be overlooked, saving you time and money, all while reducing exposure to risk. Up to date geospatial orthomosaic map and imagery can also be used to chronologically document and provide accurate site progress report through construction.

Before, during, and after construction, our drone footage will give you invaluable access to detailed, accurate, and high resolution images of your project from every angle.

Drone Capabilities:

Aerial Imagery
Data Capture & Analysis
3D Modeling & Cross-Sectional Profile
Visual Site Reconnaissance
Geospatial Site Map Overlay
Undocumented Fill Mapping & Documentation
Soil Surcharge Monitoring
Construction Site Monitoring
Progression Mapping
Geologic Hazard Mapping
Pavement Distress Survey
Ground Improvement Mitigation Monitoring
Environmental Remediation Documentation

Drone Footage:

Markets

Cornerstone Earth Group provides Geotechnical, Environmental and Construction Services to the following markets:

COMMERCIAL

Office Buildings
Warehouses
Retail Stores
Malls & Shopping Centers
Hotels, Motels & Resorts
Restaurants
Biotech
High Tech
Research & Development

INSTITUTIONAL

Schools K-12
Community Colleges
Universities
Hospitals
Retirement Homes
Convalescent Centers
Churches
Correctional Institutions

MIXED–USE

Commercial with Retail
Commercial with Residential
Residential with Retail

PRIVATE & PUBLIC WORKS

Bridges
Levees & Waterways
Dams & Embankments
Parks & Recreation
Government Buildings
Public Buildings
Roads & Highways
Airports
Utilities, Pipelines & Power
Waste & Wastewater
Landfills
Parking Garages

RESIDENTIAL

Single Family
Custom Homes
Townhomes
Apartments
Condominiums

INDUSTRIAL

Mines, Quarries & Tunnels
Oil Refineries & Gas Stations
Chemical Plants
Manufacturing
Energy

Nothing emphasizes our commitment to client satisfaction and service excellence more than one simple statistic: 90% of our revenue comes from repeat business.

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