Why Use Us?
Experienced Leadership
OGI is owned and led by Robert (Rob) Thompson, a Professional Geologist and Nevada Certified Environmental Manager with approximately 37 years of experience in environmental consulting, project management and technical support.
Serving Clients Since 2005
Based in Las Vegas, OGI helps property buyers, owners and lenders evaluate property conditions and plan their next steps. We bring experience with Nevada projects and national due diligence portfolios.
Nevada Expertise, Nationwide Assessments
We provide environmental consulting throughout Nevada and offer Phase I Environmental Site Assessments and Property Condition Assessments nationwide. We confirm service availability and the proposed scope for each property.
Competitive Pricing
Have a lower written quote for a comparable Phase I ESA in the Las Vegas Valley? Send it to us for a price-match review. We will compare the proposed scope and requirements before confirming our fee.
Direct Communication
Work with OGI on your project requirements, findings and next steps. We coordinate drilling, laboratory analysis and other specialized subcontractor services as needed, with clear communication about their role.
Current Assessment Standards
OGI conducts Phase I Environmental Site Assessments in accordance with ASTM E1527-21 and Property Condition Assessments in accordance with ASTM E2018-24. We confirm any additional lender or client requirements when defining the scope.
Technical Support from Investigation to Action
Our experience includes soil and groundwater investigations, hydrogeologic evaluations, dewatering plans, site investigation reports, and remedial action plan preparation and implementation.
Clear Scope, Fee and Schedule
Tell us about the property, the purpose of the assessment and your deadline. We will confirm the proposed scope, fee and anticipated schedule before work begins and discuss changes if additional work is needed.
Practical Findings and Next Steps
We explain property conditions and potential concerns in clear terms. Our goal is to help you understand the findings, evaluate whether further work is needed and make informed property decisions.
