Sustainable Water Engineering

Geotechnical Assessments

Geotechnical Assessments - AQUALIS

Subsurface Investigations

Geotechnical assessments are tools used to measure the physical properties and behaviors of a site. Utilizing electricity, radar, sampling and testing, Geotechnical assessments evaluate the health and viability of soil in a general area. AQUALIS offers these exploratory assessments to better understand your property before significant development or rehabilitation. 

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Services

Geotechnical Assessments - AQUALIS

Electrical Resistivity Tomography (ERT)

A geotechnical assessment that utilizes electricity to gather soil data and geological variations.
Geotechnical Assessments - AQUALIS

Ground Penetrating Radar (GPR)

A non-invasive technique used to map and image underground utilities and subsurface layers.
Geotechnical Assessments - AQUALIS

Emergency Response

For assistance with emergency service needs, call us immediately.

855-480-1273
Geotechnical Assessments - AQUALIS

Nationwide Services

Review our locations and find your local representative with our interactive search.

 

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When are Geotechnical Assessments Used?

Geotechnical assessments are used to evaluate create an image of underground topography and behavior based on data that describes the subsurface soils and infrastructure. Each geotechnical assessment analyses one piece of the puzzle, so often they are used in conjunction to fully understand what is underground in a particular area. These tests utilize data to interpret the following:

  • Soil Type
  • Infrastructure
  • Soil Density
  • Water Solubility

Utilizing non-invasive assessment methods allows AQUALIS professionals insight of materials underground. These assessments help professionals better understand how involved the project may be including potential costs and timeline. 

Unfortunately, there is not a comprehensive method that provides a clear picture of what is underground. In some instances, only one testing method is necessary, but there are sites with issues that require more robust testing. For example, ERT assessments should be conducted directly on soils as the test is inconclusive on pavement, but MASW seismic surveys can be conducted on pavement, despite not reporting underground water as well as ERT. 

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Case Studies

beaver dam catch basin manhole

Beaver Dam, Wis. Catch Basin Spray Cast

AQUALIS stormwater professionals inspected a retail property and found severe damage to multiple catch basins, necessitating repairs to prevent environmental liability and ensure site operations.
Geotechnical Assessments - AQUALIS

Pataskala, Ohio Pond Aeration

This commercial distribution center has four retention ponds on the property to offset the impervious surface area. These ponds collect, store and treat stormwater runoff.
Geotechnical Assessments - AQUALIS

Durham, N.C. Systematic Neglect Leads to Rehabilitation

The property owners on this site noted cracking and shifting along the edge of the parking lot near stormwater assets. Understanding the gravity of the situation, they reached out to AQUALIS to conduct a preliminary inspection of the stormwater system.
Geotechnical Assessments - AQUALIS

Broward County, Fla. Corrective Maintenance Protects Assets

Regular maintenance of stormwater assets protects properties from failures related to buildup and structural issues. Routinely inspecting and maintaining these assets can prevent costly repairs.
Geotechnical Assessments - AQUALIS

Durham, N.C. Sinkhole Leads to Stormwater System Rehabilitation

The tenant on this property noticed a depression that opened to the ground below and notified the property owners.
Geotechnical Assessments - AQUALIS

Steubenville, Ohio Slope Collapse

The stormwater pipe on this property failed leading to a catastrophic sinkhole that affected a nearby wastewater line. Quick, efficient work was of the upmost importance to repair both pipelines, the sinkhole and surrounding area.
Geotechnical Assessments - AQUALIS

Kenosha, Wis. Highway KR Regenerative Stormwater Conveyance

The Root-Pike Watershed Initiative Network Kenosha County, and others worked with AQUALIS to design and implement an innovative solution for stormwater control along Highway KR.
Open manhole cleaning

Seattle, Wash. Lift Station Rehabilitation

During the retrofit process on this commercial property, the client and their previously hired engineering firm noted an expected increase in their waste stream. AQUALIS regularly maintained the lift station on the property and was the first choice for the two entities to advise and redesign the current lift station.
Geotechnical Assessments - AQUALIS

San Antonio, Tex. Sand Filter Remediation

The sand filter basin on this site was not maintained and over time became laden with vegetation and no longer offered water quality benefits.
War Memorial Center stormwater maintenance

Milwaukee, Wis. War Memorial Center Stormwater Management

The War Memorial Center in Milwaukee, Wis. is a living memorial and museum intended to “Honor the Dead by Serving the Living”. Constructed in 1955, this site needed restructuring to better treat stormwater runoff from parking lots prior to entering Lake Michigan.
Geotechnical Assessments - AQUALIS

Milwaukee, Wis. Green Stormwater Schoolyard Redevelopment Projects

Through received grants, Milwaukee Public School’s (MPS) project goal was to remove tens of thousands of square feet of asphalt to manage hundreds of thousands of gallons of stormwater runoff while providing significant opportunities for students to engage in Green Infrastructure and eco-literacy topics firsthand through STEAM (science, technology, engineering, arts and mathematics) curricular connections.
Goats graze in a field for vegetation management

Lakewood, Wash. Vegetation Management

A customer site in Lakewood, Wash. was experiencing vegetation overgrowth that was invasive and unsightly. To prevent the vegetation from overtaking stormwater assets, goats were used to naturally remove the plants and protect existing stormwater assets.
Retention pond covered in algae surrounded by downed trees with a house and Mt Rainer in the background

Tacoma, Wash. Pond Clearing

Proactive property managers of this homeowners association requested rehabilitation of stormwater ponds after over twenty years of neglect.
Geotechnical Assessments - AQUALIS

Maynard, Mass. Underground Pipe Inspection

During routine inspection, the Town of Maynard, Mass. found pollutants leaving this retail site. To remediate the issue the AQUALIS inspected, cleaned and repaired the stormwater pipes.
pond rehabilitation

Pontiac, Mich. Pond Rehabilitation

Improper pond dredging and sediment stabilization leads to necessary stormwater pond rehabilitation.
Summerfest Administration Building

Milwaukee, Wis. Grant Assistance and Green Infrastructure

AQUALIS assisted Summerfest earn grant assistance for Green Infrastructure redesign.
Excavator digging a trench alongside a full parking lot behind and below a metal barrier

Salisbury, Md. Bioretention Remediation

Commercial property received Notice of Violation (NOV) requiring remediation of two bioretention cells on site.
Geotechnical Assessments - AQUALIS

Snohomish County, Wash. Underground Stormwater System Rehabilitation

A multi-family property received a notice of violation (NOV) listing fifteen deficiencies requiring corrective action.
Man looking up helps to guide placement of lift station pump hanging from red hook into an opening with metal hinged doors lifted

Hallandale Beach, Fla. Commercial Lift Station Repair

During a maintenance visit, technicians noticed lift station pumps nearing failure. Because this was found before failure, the replacement was scheduled to avoid backups.
Man walks along compacted path beside detention pond surrounded by trees under a blue sky

Jacksonville, Fla. Wet Detention Pond Rehabilitation

A wet detention pond located adjacent to a shipping and transportation warehouse required corrective action to restore access for maintenance.
Stormwater detention basin at the foot of grassy hill split by a rock- filled gash below office building and parking lot

Columbia, Md. Stormwater Detention Basin Rehabilitation

The local municipality issued an NOV for this basin experiencing sediment displacement and buildup and failing structures.
Lift Station After

Blaine, Wash. Lift Station Replacement

AQUALIS’ lift station experts were called to inspect the condition of the two above-ground sanitary lift stations.
Two Sinkholes

Raleigh, N.C. Sinkhole Restoration

Sinkholes appeared in the drive lane of this complex. AQUALIS was called to investigate.
Truck with hydro vacuum, orange traffic cones and front-mounted hose spool parked at curb in front of storm drain grate

Bellevue, Wash. Utility Daylighting and Repairs

This property experienced regular flooding around downspouts. AQUALIS was notified to ensure the system was functioning properly.
Overhead view of sewage pump suspended from metal bar with chains, connected to gray pipe and white air blower

Edgewater, N.J. Lift Station Repairs

Neglected and without a proper maintenance plan, the system ran without issue for a time, until it did not.
Overgrown Basin

Augusta, Ga. Stormwater Basin Rehabilitation

This location lacked a consistent stormwater maintenance plan, leaving the property to fall out of compliance.
Retention Pond Outlet Pipe

Athens, Ga. Stormwater Detention Pond Outlet Faces Severe Erosion

In Athens, GA, a retail store’s stormwater detention pond outlet was affected by substantial erosion.
Clean Filter Vault

Newton, N.J. Contech Filter Vault Rehabilitation

During AQUALIS’ first service visit to the site, a Contech Filter Vault was identified, and quickly found to be out of compliance with manufacturer guidelines.
Cleared Retention Pond

Fayetteville, N.C. Wet Detention Basin Restoration

A store in Fayetteville, NC provides the community with excellent customer service, and durable and long-lasting products that will hold their value for years to come.
Rehabilitated Dry Detention Pond

The City of Florence Dry Detention Basin Rehabilitation

For decades, a store in Florence, KY has provided innovative products that create a personalized shopping experience for customers. Their dedication to excellent customer service has made this store a go-to for customers of all ages.

Did you receive an NOV? Have an urgent need? We can help.

Notices of Violation (NOVs) or Corrective Notices should be taken seriously. Contact AQUALIS today to learn how to resolve the issue and comply with regulations. 

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