Groundwater, Dewatering, PFAS, Environmental & Subsurface Consulting Services 

Tunnell Subsurface Consulting provides groundwater, hydrogeologic, construction-dewatering, environmental, PFAS/AFFF, contaminated-site, and subsurface technical consulting. Services include groundwater investigation and interpretation, dewatering feasibility and groundwater-control review, deep-well and wellpoint systems, bypass pumping and excavation support, drainage and shallow-groundwater evaluation, PFAS and contaminant-pathway analysis, environmental remediation and permitting support, technical due diligence, regulatory and project-record review, litigation and claims support, and independent technical second opinions.

TSC supports contractors, engineering and environmental teams, municipalities, public agencies, attorneys, insurers, businesses, and property owners throughout Michigan, with nationwide remote technical-review support.

Groundwater & Hydrogeology
Groundwater movement, hydraulic gradients, groundwater contamination, plume interpretation, shallow saturated soils, groundwater intrusion, boring-log review, hydrogeologic evaluation, and site-condition analysis.

Construction Dewatering & Groundwater Control
Dewatering feasibility, deep wells, wellpoints, bypass pumping, drawdown, pumping-system review, discharge routing, excavation support, groundwater-control methods, and constructability review.

PFAS/AFFF & Contaminated-Site Consulting
PFAS/AFFF source, fate, transport and pathway analysis; groundwater and soil impacts; landfill and leachate issues; contaminated-site records; consultant reports; and regulatory review.

Environmental Remediation, Permitting & Compliance
Remediation planning and review, petroleum and UST conditions, contaminated soil and groundwater, Phase I ESA/REC review, discharge requirements, NPDES/DMR documentation, environmental permitting, regulatory records, and compliance support.

Environmental Litigation, Claims & Technical Review
Groundwater, dewatering, PFAS and environmental dispute analysis; construction and insurance claims; technical chronology development; record review; damages/property-impact support; attorney-directed technical writing; and expert-support preparation.

Residential Drainage, Groundwater & Subsurface Review
Wet yards, basement seepage, sump-discharge issues, drainage and grading concerns, shallow groundwater, soil and subsurface conditions, and independent second opinions before major repairs.