Michigan Archives

High Volume Sampling and Vapor Intrusion Mitigation Design for a Manufacturing Facility
High Volume Sampling and Vapor Intrusion Mitigation Design for a Manufacturing Facility

High Volume Sampling and Vapor Intrusion Mitigation Design for a Manufacturing Facility

Anousone Muongpack2026-04-02T16:46:34-06:00August 31st, 2021|

In the early eighties, a manufacturing facility (Site) was found to be the source of trichloroethene (TCE) impacts to local groundwater. Later in the decade, approximately 220 cubic yards of soil were removed from the Site’s central courtyard, an area where chlorinated solvents had previously been stored. The excavation was believed to have removed the majority of the source material, but a subsequent investigation showed elevated sub-slab soil gas concentrations of TCE centered around the courtyard with concentrations decreasing radially. The Site is currently a plastic recycling facility.

LNAPL Characterization and Off-site Stormwater Assessment
LNAPL Characterization and Off-site Stormwater Assessment

LNAPL Characterization and Off-site Stormwater Assessment

Anousone Muongpack2026-04-02T16:46:36-06:00August 19th, 2021|

An active rail yard in Grand Rapids, Michigan has been used as a rail car storage and maintenance facility for the last 100 years. Diesel fuel impacts entered the subsurface during this period, resulting in 7.8 acres of light non-aqueous phase liquid (LNAPL) up to seven feet in thickness. Years of active LNAPL recovery had not sufficiently addressed underlying risks to potential environmental and human health receptors.

Ryerson Creek Outfall Feasibility Study and Remedial Design
Ryerson Creek Outfall Feasibility Study and Remedial Design

Ryerson Creek Outfall Feasibility Study and Remedial Design

Bobby Kreiner2026-04-02T16:46:32-06:00January 5th, 2021|

The Ryerson Creek Outfall (RCO) is the last remaining subarea in the Muskegon Lake, Michigan Area of Concern (AOC). Once the identified Beneficial Use Impairment (BUI) of the RCO (Degradation of Benthos) is addressed the Muskegon Lake AOC can be delisted.

Design-Build Services for a Groundwater Treatment System at a Coal Ash Landfill
Design-Build Services for a Groundwater Treatment System at a Coal Ash Landfill

Design-Build Services for a Groundwater Treatment System at a Coal Ash Landfill

Bobby Kreiner2026-05-26T09:26:52-06:00March 2nd, 2020|

Geosyntec designed a low-maintenance groundwater treatment system to prevent arsenic discharge from a coal ash landfill into the Great Lakes.

Slope Remediation at a Fly Ash Disposal Basin/Landfill
Slope Remediation at a Fly Ash Disposal Basin/Landfill

Slope Remediation at a Fly Ash Disposal Basin/Landfill

Bobby Kreiner2026-05-26T10:05:16-06:00February 10th, 2020|

The project site is a 410-acre fly ash disposal basin (permitted as a Type III landfill in the long term) for a coal-fired electricity generating facility in Michigan. The fly ash disposal basin is enclosed by a 3.5-mile-long, up to 44-foot-high, compacted clay embankment.

Slope Remediation Strategy and Implementation at a Fly Ash Disposal Basin
Slope Remediation Strategy and Implementation at a Fly Ash Disposal Basin

Slope Remediation Strategy and Implementation at a Fly Ash Disposal Basin

Bobby Kreiner2026-04-02T15:28:22-06:00July 24th, 2015|Tags: John Seymour, Neil Davies, Paul Sabatini|

The project site is a nearly 400-acre fly ash disposal basin for a very large, coal-fired electricity generating facility in Michigan. The fly ash disposal basin is enclosed by a 3.5-mile long, 40-foot high, compacted clay embankment.

Design of Foundation and Structural Integrity Support System for Soil Removal Beneath an Operating Manufacturing Facility
Design of Foundation and Structural Integrity Support System for Soil Removal Beneath an Operating Manufacturing Facility

Design of Foundation and Structural Integrity Support System for Soil Removal Beneath an Operating Manufacturing Facility

Bobby Kreiner2026-04-02T15:50:26-06:00October 22nd, 2009|Tags: Paul Sabatini|

The owners of an active aircraft hydraulics manufacturing and testing facility in southwest Michigan were charged by state regulators with the removal of a large quantity of soil and other materials from beneath an active processing area known as the EPD Room. The owners turned to Geosyntec to engineer a system that would allow soil removal without disturbing foundation elements while maintaining the structural integrity of the active facility.

Reimagine the Possible | Thierno Kane

Mule Creek Dam Reservoir Inundation Mapping

High Volume Sampling and Vapor Intrusion Mitigation Design for a Manufacturing Facility

High Volume Sampling and Vapor Intrusion Mitigation Design for a Manufacturing Facility

LNAPL Characterization and Off-site Stormwater Assessment

LNAPL Characterization and Off-site Stormwater Assessment

Ryerson Creek Outfall Feasibility Study and Remedial Design

Ryerson Creek Outfall Feasibility Study and Remedial Design

Design-Build Services for a Groundwater Treatment System at a Coal Ash Landfill

Design-Build Services for a Groundwater Treatment System at a Coal Ash Landfill

Slope Remediation at a Fly Ash Disposal Basin/Landfill

Slope Remediation at a Fly Ash Disposal Basin/Landfill

Slope Remediation Strategy and Implementation at a Fly Ash Disposal Basin

Slope Remediation Strategy and Implementation at a Fly Ash Disposal Basin

Design of Foundation and Structural Integrity Support System for Soil Removal Beneath an Operating Manufacturing Facility

Design of Foundation and Structural Integrity Support System for Soil Removal Beneath an Operating Manufacturing Facility

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