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Staheli Trenchless Consultants

Quality Trenchless Design, Risk Management and Specialty Inspection Services

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About the firm

Staheli Trenchless Consultants is a specialty engineering practice delivering quality trenchless design, risk management, and construction inspection services. Founded in 2007 in Lynnwood, Washington, it brings over 130 combined years of expertise across a wide range of trenchless technologies, including microtunneling, horizontal directional drilling, guided boring, auger boring, pipe ramming, pipe bursting, and EPB tunneling. It is highly active with NASTT and ISTT, contributing nationally and internationally recognized research and publications to advance the trenchless industry.

Established
2007
Team
Micro
Firm type
Civil Engineering · Geotechnical Engineering

People

Kimberlie StaheliPresident & Principal Engineer

Capabilities

Feasibility & Design Services

Service website

Provides comprehensive feasibility studies and design engineering for trenchless utility and pipeline infrastructure projects.

  • Trenchless Technologies

    Expertise across multiple trenchless methods including microtunneling, horizontal directional drilling, guided boring, auger boring, pipe ramming, pipe bursting, EPB tunneling, and in-place rehabilitation.

  • Feasibility Studies

    Assesses project feasibility through the evaluation of geotechnical data and site conditions, risk identification, and recommendation of optimal trenchless methods.

  • Design & Engineering

    Develops construction plans, authors technical specifications, prepares geotechnical baseline reports, performs risk assessments, and creates project schedules and cost estimates.

Third Party Design Reviews

Service website

Conducts independent third party design reviews at various project stages from 30% to 90% completion to minimize construction risk and reduce project costs.

Specialty Construction Management & Inspection

Service website

Delivers comprehensive pre-bid, post-construction, and on-site construction management services tailored for trenchless projects.

  • Pre-Bid Services

    Develops and evaluates contractor pre-qualification packages and conducts quality assurance reviews to ensure qualified bidding contractors.

  • On-Site Construction Inspection

    Provides full-time, on-site construction management to track contractor performance, verify specification compliance, and minimize active risks.

  • Post-Construction & Claims Support

    Provides contractor claim evaluations, expert witness testimony, and claims-related counseling.

Industries

Infrastructure · Water Supply · Wastewater · Oil & Gas · Tunnels

Projects