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Hennepin County, Minnesota
Environmental Services in Hennepin County, MN
Environmental site assessments and construction-phase environmental support that keep transactions and projects moving without surprises. Hennepin County is covered on a project basis through our Minneapolis, MN regional hub.
- Dispatched from
- Minneapolis, MN regional hub · project-based staffing
- Lead time
- Scheduled by phone or proposal; lead time confirmed when the scope is set
- Laboratory
- Sugar Land, TX laboratory under chain of custody, or a mobile laboratory for large projects
- Reporting
- Reviewed and issued under a documented quality system; formatted for owner, engineer, and building-official review
- Serving
- Hennepin County, MN — Minneapolis, St. Paul, Rochester
- Coverage
- Minnesota statewide · 27 regional hubs
- Technicians
- ACI- and NICET-certified field staff; licensed professionals in Minnesota
- Call us
- (346) 420-5425
Scope
Environmental services in Hennepin County
- Phase I Environmental Site Assessments for acquisitions and refinancing
- Phase II subsurface sampling when a Phase I identifies recognized environmental conditions
- Construction stormwater support: SWPPP compliance inspections
- Soil management screening for export and import of fill material
Full scope, standards list, and pricing basis: Environmental Services.
Local conditions
Environmental conditions in Hennepin County
Hennepin County sits at the center of one of the Upper Midwest's most active development markets, where urban infill, mixed-use redevelopment, and infrastructure expansion routinely bring projects into contact with legacy industrial land uses, buried petroleum infrastructure, and soils that have seen decades of urban activity. Minnesota's freeze-thaw cycle and a regional geology characterized by glacial till, lacustrine clays, and variable fill create conditions where subsurface unknowns carry real schedule and cost risk. Our environmental services team, dispatched through our Minneapolis regional hub, provides Phase I and Phase II Environmental Site Assessments, soil and groundwater sampling, and construction-phase environmental monitoring to keep transactions on track and project sites compliant. We work directly with contractors, developers, lenders, and engineers to deliver findings that are technically sound, clearly written, and timed to your project schedule — not padded to fill a billing cycle.
Hennepin County's glacially deposited soils — including lacustrine clays and stratified sandy materials — can create variable vadose-zone conditions that affect contaminant migration patterns during Phase II investigations. Minnesota's extended cold season also means ground frost depths and seasonal groundwater fluctuations should be factored into sampling program timing and equipment planning.
FAQ · Hennepin County
How does Minnesota's cold climate affect the scheduling of a Phase II subsurface investigation in Hennepin County?
Frozen ground and winter frost depths in the Twin Cities metro can restrict direct-push drilling and hand-augering from roughly December through early April, depending on conditions. Scheduling Phase II fieldwork in fall or late spring avoids these constraints. If winter investigation is unavoidable, mobilization with appropriate drilling equipment and adjusted sampling protocols should be planned and budgeted in advance.
What Minnesota-specific regulatory programs should we be aware of when buying or developing a brownfield site in Hennepin County?
The Minnesota Pollution Control Agency administers the Voluntary Investigation and Cleanup program and the Petroleum Brownfields program, both of which can be relevant for contaminated properties in Hennepin County. Depending on site history, the MPCA may need to be notified or involved. Your Phase I or Phase II findings should be evaluated against these state-level frameworks alongside federal ASTM E1527-21 requirements.
Our site has a history of dry-cleaning or light industrial use — what should the Phase II sampling plan address specifically?
Dry-cleaning and light industrial sites commonly involve chlorinated solvents, petroleum hydrocarbons, or metals. A Phase II scope under ASTM E1903-19 should include soil borings targeted at former chemical storage and floor-drain locations, groundwater sampling if the water table is accessible, and laboratory analysis matched to the suspected contaminant profile. Sample depth intervals should account for Hennepin County's variable glacial stratigraphy.
Which office covers environmental in Hennepin County, MN?
Field work in Hennepin County is dispatched through the Minneapolis, MN regional hub. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Hennepin County projects.
Are the technicians you send to Hennepin County certified?
Field sampling and testing in Hennepin County are performed by our ACI- and NICET-certified technicians. Environmental engineering and professional services are delivered with professionals licensed in Minnesota, coordinated under one proposal.
Scheduling & proposals
Need environmental services in Hennepin County?
Call to schedule a technician, or send project documents for a written proposal.