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The following is a list of the range of our geotechnical services that are provided by PGE for

public and private projects.

 

• Geologic reconnaissance of site subsurface conditions                                                 

• Subsurface explorations 

• Geotechnical engineering report preparation

• Environmentally critical area site evaluation, e.g., landslide, seismic, and erosion hazard sites   

• Geotechnical engineering analyses & design

• Geotechnical engineering analysis & design peer review

• Low Impact Development (LID) site engineering    

• Foundation alternatives recommendations - shallow & deep foundations

• Existing foundation stabilization & underpinning

• Ground improvement – building pad preloading/surcharging, and dynamic compaction

• Excavation support system - soldier pile wall, tie back anchors, soil nailing, sheet piling              

• Excavation safety evaluation as per OSHA requirements

• Retaining wall design parameters recommendations

• Design of MSE, Gravity block, & Rockery walls

• Soil stabilization e.g., lime & cement stabilization

• Soil usage management - reuse of on-site soils as fills, imported fills evaluation

• Subsurface drainage system, & construction dewatering recommendation

• Landslide hazard evaluation, numerical slope stability analysis, slope stabilization & protection, slope drainage

• Seismic hazard evaluation & mitigation, & liquefaction analysis

• Erosion hazard evaluation & mitigation

• Pavement design - asphalt, concrete, & porous pavements, pedagogical study, road subgrade improvement 

• Geotechnical engineering for environmental site clean-up

• Geotechnical instrumentation for settlement, excavation support system, & slope movement monitoring, & structure crack monitoring

• Stormwater infiltration evaluation, dispersion feasibility, Pilot Infiltration Test (PIT), field verification PIT test 

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