Aaron Swan & Associates, Inc.

Unwavering Quality. Reliable Results.

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About the firm

Aaron Swan & Associates, Inc. provides comprehensive materials testing, geotechnical engineering, civil design, and environmental consulting. Operating multiple specialized laboratories and a fleet of mobile units, it supports public and private clients across the region with reliable results for modern infrastructure and construction projects.

Established
1975
Team
Small
Firm type
Materials Testing · Geotechnical Engineering · Civil Engineering · Environmental Engineering

People

Steve McCartyPresident & Majority Owner

Jeremy PhelpsVice President & Minority Owner

Capabilities

Civil Design and Engineering

Service website

Comprehensive planning and design support for modern site and infrastructure projects.

  • Site Master Planning and Layout

    Optimizing land use and spatial layouts to establish solid development plans.

  • Underground Utilities Design

    Designing critical infrastructure systems including water and sanitary sewer utilities.

  • Permit Assistance and Documentation

    Navigating federal, state, and local regulatory requirements to secure necessary construction permits.

  • Grading and Paving Plans

    Developing precise grading, paving, and erosion control plans to ensure proper site preparation.

Geotechnical Investigations

Service website

Subsurface exploration and engineering analysis to support foundation design and site stability.

  • Geotechnical Drilling and Testing

    Conducting soil borings and laboratory testing of soils to determine engineering properties.

  • Foundation Recommendations

    Providing structural recommendations for foundations based on excavation observations and analysis.

Materials Laboratory Testing

Service website

Certified laboratory testing of construction materials including soils, concrete, and asphalt.

  • Soils and Aggregate Testing

    Evaluating raw material properties through proctor, gradation, sand equivalent, and durability testing.

  • Concrete Mix Design and Testing

    Determining concrete performance through compressive strength testing, cylinder breaks, and mix evaluation.

  • Asphalt Mix and QC Testing

    Performing asphalt quality control, gyratory compaction, and pavement investigation.

Field Materials Testing

Service website

On-site quality control and testing to verify construction compliance.

  • Compaction and Density Monitoring

    Utilizing nuclear and sand cone methods to verify soil and aggregate compaction on site.

  • Concrete Inspection and Coring

    Performing slump, air, and temperature tests along with concrete coring and set time analysis.

Civil and Bridge Engineering

Service website

Engineering assessments, bridge inspections, and structural evaluations for transport and public works.

  • Bridge and Structural Inspections

    Conducting professional bridge inspections, structural evaluations, and risk assessments.

  • Transportation Infrastructure Design

    Designing foundations and structural layers for roads, parking lots, and airfields.

Construction Services

Service website

Project management, construction monitoring, and administration to keep projects on track.

  • Contract Administration

    Managing construction documents, preconstruction meetings, and shop drawing reviews.

  • Construction Monitoring and Inspection

    Providing on-site construction monitoring, inspection, and progress reviews.

Industries

Wastewater · Education · Government · Federal · Highways & Roads · Airports · Infrastructure · Utilities · Stormwater & Flood Control · Bridges · Healthcare · Residential

Projects

Pierre SD Wastewater Treatment Plant

Pierre, SD · Wastewater

Project details

Materials testing and civil engineering support for the wastewater treatment facility in Pierre, South Dakota.

Crazy Horse School

Education

Project details

Geotechnical, materials testing, or civil design support for the Crazy Horse School facility.

Avera Hemsley Center

Healthcare

Project details

Testing and civil design services for the construction of the Avera Hemsley Center.

Aaron Swan & Associates, Inc. - Engineering Firms