Alpha Geotechnical & Materials, Inc.

Provides site investigations, foundation design support, seismic class evaluations, and earth retention analysis for public and private infrastructure.

• Subsurface Site Investigation
• Foundation, Pavement, and Earthquake Engineering
• Excavation Conditions Evaluation
• Earth Slopes and Embankments Analysis
• Retaining Walls Design
• Buried Structures Analysis
• Soil Improvement and Stabilization
• Erosion Control Solutions
• Geologic Hazard Evaluation
• Slope Stability Analysis

Conducts laboratory and field evaluations of soil properties to determine engineering parameters for construction projects.

• Field Density Determination
• Density of Undisturbed Samples
• Atterberg Limits
• Moisture-Density Relationship
• Expansion and Consolidation Testing
• Permeability Testing
• Percolation Testing
• Corrosivity Testing
• Direct Shear Testing
• R-Values Evaluation

Performs quality control sampling, slump, and air content checks, along with strength testing of plastic and hardened concrete.

• Sampling and Slump Testing of Plastic Concrete
• Unit Weight and Yield of Plastic Concrete
• Air Content and Temperature Measurements
• Making and Curing of Concrete Cylinders
• Coring of Cylindrical Specimens
• Rebar Location and Pachometer Surveys
• Schmidt Hammer Testing of Hardened Concrete
• Special Inspection of Reinforced Concrete
• Vapor Transmission Measurement
• Floor Flatness and Levelness Testing
• Pull Testing of Rebar and Anchor Bolts
• Compressive and Flexural Strength Testing

Offers classification, compaction, shear, and durability evaluations of soils and structural aggregates.

• Field Density by Nuclear Gauge, Sandcone, or Large Sandcone Methods
• Sieve Analysis
• Laboratory Plasticity Index and Atterberg Limits
• Moisture-Density Relationship (Proctor Determination)
• Expansion Index Testing
• pH and Resistivity Testing
• Direct Shear Testing of Soils
• Swell and Consolidation Testing
• Triaxial Permeability of Cohesive Soil
• Specific Gravity and Absorption of Aggregate
• Unit Weight of Aggregate
• Fractured Face Count
• Sand Equivalent Testing
• Flat and Elongated Particles

Delivers field density measurements, extraction tests, and air void determinations to verify pavement compliance.

• Field Density Determination by Nuclear Gauge
• Coring of Cylindrical Specimens
• Extraction and Gradation
• Unit Weight and Thickness of Specimens
• Maximum Specific Gravity (Rice Test)
• Stability and Flow Testing
• Tensile Strength Ratio
• Marshall Testing
• Air Voids Determination

Assesses the compressive strength and physical characteristics of masonry components to support structural certification.

• Grout and Mortar Sampling and Slump Testing
• Grout and Mortar Temperature Measurement
• Making and Curing of Grout and Mortar Prisms
• Rebar Location and Pachometer Surveys
• Special Inspection of Concrete Masonry Construction
• Compressive Strength Testing of Grout, Mortar, and Masonry Units

Executes environmental site assessments, hazardous material surveys, and regulatory compliance planning for land development.

• Phase I, II, and III Environmental Site Assessments
• Pesticide and Herbicide Screenings
• Asbestos and Lead-Based Paint Surveys
• Environmental Compliance Audits and Plans
• Indoor Air Quality Assessments
• Underground Storage Tank Corrective Actions and Closure
• Septic, Drywell, and Groundwater Well Assessments and Closures
• Soil and Groundwater Investigation and Remediation
• Soil-Gas Surveys
• Forensic and Expert Witness Work
• Stormwater Pollution Prevention Plans
• Spill Prevention Countermeasure and Control Plans
• Environmental and Air Permitting

Performs earth fissure assessments, geological hazard evaluations, and subsurface water investigations.

• Percolation Testing
• Earth Fissure Evaluations
• Seismic Surveys
• Rock Slope Evaluations
• Evaluation of Seismic Site Class
• Groundwater Evaluations
• Rip Rap Observation and Testing