Geotechnical and Environmental Engineers
 
 

It is with a heavy heart that we announce the passing of Harold Hollingsworth.

With over 50 years of engineering experience throughout Colorado and Wyoming, he was an invaluable part of the Hollingsworth team. His presence will be sorely missed and we appreciate your understanding as we adjust during the upcoming weeks.

 

Serving Colorado and Wyoming since 1982

GEOTECHNICAL AND ENVIRONMENTAL ENGINEERING

Soils Reports

Subsurface investigations for homes, businesses, and government.

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Laboratory Testing

In-house soils, rock, and construction materials testing.

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Construction Period Services

On-site materials testing and inspections.

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Other Services 

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Engineered Plans

  • Shoring

  • Residential foundations

  • Pole barns

  • Slurry walls

  • Septic systems

  • Pavements

  • Retaining walls

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Environmental Consulting

  • Phase I and II site assessments

  • Compliance monitoring

  • Monitoring well installation

  • Landfill permitting

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Drilling

We provide drilling services throughout Colorado and Wyoming using our own drillers and equipment.

  • Drill rigs: Mobile B-53, Mobile B-31, Mobile Minute Man, Simco 2400, Giddings

  • Drilling methods: 4-inch solid stem, hollow stem (multiple sizes), coring, air/mud rotary, downhole hammer