Services

Our Services - Why One Consulting Group Environmental problems don’t need more complexity — they need solutions.

One Consulting Group is known for hands-on troubleshooting, regulatory insight, and relationship-driven consulting. Clients rely on us when projects involve uncertainty, risk, or public accountability. ● 20 years of proven environmental performance ● Trusted by commercial developers and lenders ● Specialized experience in government contracts and affordable housing ● Responsive, accountable, and relationship-oriented

Environmental Due Diligence

One Consulting Group provides Phase I and Phase II Environmental Assessments for commercial real estate developers, lenders, and investors. Our assessments identify environmental risks early, helping clients make informed decisions, secure financing and avoiding costly delays.

Investigation & Remediation

We specialize in environmental investigation and remediation planning for sites with known or suspected contamination. Our team develops practical, cost-conscious remediation strategies aligned with regulatory requirements and redevelopment goals. 

Demolition & Redevelopment

Demolition and redevelopment projects require careful environmental coordination. One Consulting Group supports hazardous materials assessment, regulatory approvals, and site cleanup planning to ensure projects move safely and efficiently.

Government & Affordable Housing Services

One Consulting Group has extensive experience supporting public agencies and affordable housing developers. We understand the environmental requirements tied to public funding, compliance timelines, and community impact. 

  • Construction worker operating a yellow excavator on a construction site with a mountain backdrop.

    Real Estate Due-Diligence Services

    • Environmental Compliance Reviews

    • Hazardous Building Material Assessments

    • Phase I Environmental Site Assessments

    • Phase II Environmental Investigations

    • Property Condition Assessments

  • Worker in white protective suit, safety glasses, and helmet working underneath a boat with a power tool, in a workshop or construction setting.

    Investigative and Remedial Services

    • Air, Groundwater, and Soil Investigations

    • Hazardous Building Material Abatement Design and Management

    • Hazardous- and Solid-Waste Characterization and Disposal

    • Indoor Air Quality Testing

    • Remediation Design, Management, and Maintenance

    • Stream and Surface Water Quality Investigations

  • Construction site with workers wearing safety vests and hard hats, standing on a partially completed concrete slab. In the background, there is a large area with exposed rebar and wiring for a building foundation, surrounded by modern apartment buildings and streets.

    Development Services

    • Brownfield Compliance and Cost Recovery

    • Environmental Liability Analysis and Costing

    • Facility Decommissioning

    • Payment and Draw Inspections

    • Demolition and Restoration Design and Management

  • Close-up of a gas pump nozzle and payment terminal at an outdoor station with greenery in the background.

    Petroleum Services

    • Aboveground and Underground Storage Tank Installation and Closure

    • Regulatory Compliance

    • Corrective Action

    • Trust Fund Cost-Recovery

Proven Environmental Performance

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