Projects
Thirty-plus years experience gives us an eye for detail and a “big picture” approach.

Projects

Our projects range in size from individual residences to multi-million dollar infrastructure and environmental remediation projects. We have won numerous awards for innovation, and we continue to be a leader in trenchless technologies, environmental assessment and remediation, mechanically stabilized embankments, and geologic trench documentation using high resolution photography.

SHN performed settlement surveys on nine closed landfills in Siskiyou County.  Landfill closure monitoring requires the County to conduct iso-settlement surveys that meet exacting permitting requirements (CCR Title 27, Section 21090(e)(2)). Monitoring closed landfill settlement precisely and accurately is important because any ponded water on the landfill cap has the potential to infiltrate to the waste below, creating landfill leachate that can affect soil underneath the landfill, or shallow groundwater if it is present.

Using unmanned aerial vehicles (UAVs) and traditional surveying techniques, SHN surveyors, UAV pilots, and geographic information system (GIS) specialists created maps and images that were used by the County to assess settlement and erosion at the nine landfills.  The maps met the requirements for permit compliance.  Should the County wish to observe landfill cap conditions in greater detail, high resolution photographs are also available, which would not have been the case had we created the maps using only standard surveying techniques.  SHN was able to underlay the photographs as backgrounds to the topographic maps, providing additional information for the County as it assesses the current status of their closed landfills.

Civil Engineering

Civil Engineering

Trenchless Technologies

Trenchless Technologies

Surveying

Surveying

Water Resources

Water Resources

Environmental Services

Environmental Services

Geosciences

Geosciences

Materials Testing and Special Inspections

Materials Testing and Special Inspections

Planning and Permitting

Planning and Permitting

Biological Sciences

Biological Sciences

Certifications and Associations

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