Understand the site.
Define the path forward.

A useful investigation starts with a clear question. Dunecrest reviews available Phase I and Phase II reports, historical records, regulatory files, site plans, utility information, and property-use details to develop a focused investigation approach.

The goal is to collect the right data for the decision at hand — whether that means evaluating a recognized environmental condition, supporting a BEA, assessing Due Care obligations, or defining the next step in a larger corrective action process.

Work planning may include boring and monitoring well locations, sample intervals, analytical parameters, utility clearance needs, access coordination, health and safety considerations, and schedule coordination with drillers, laboratories, property owners, and project stakeholders.

Soil and groundwater assessment helps evaluate whether a release has impacted the subsurface and whether concentrations exceed applicable Michigan criteria. Scopes are developed around the release type, suspected source area, site setting, and intended property use.

Field activities may include soil borings, continuous soil screening, temporary or permanent monitoring wells, groundwater sampling, field measurements, and laboratory analysis for contaminants of concern such as petroleum compounds, solvents, metals, PNAs, PFAS, or other site-specific parameters.

Results are evaluated in the context of site geology, groundwater flow, exposure pathways, surrounding land use, and applicable Part 201 or Part 213 criteria. The result is a practical understanding of whether additional investigation, documentation, or response planning may be warranted.

Vapor intrusion can be a key issue at properties affected by volatile organic compounds, including chlorinated solvents and petroleum constituents. When warranted, Dunecrest evaluates whether soil, groundwater, or soil gas conditions could create a potential indoor air exposure pathway.

Depending on the site, the scope may include review of existing groundwater or soil data, screening against applicable vapor intrusion criteria, soil gas sampling, sub-slab sampling, indoor air considerations, building construction review, and evaluation of nearby utilities or preferential pathways.

The objective is to identify whether vapor intrusion is a concern, whether additional characterization is needed, and whether mitigation or exposure controls should be considered as part of Due Care, redevelopment, or corrective action planning.

Sampling results only become useful when they are organized into a clear technical story. Dunecrest summarizes field methods, observations, analytical results, data limitations, regulatory comparisons, and recommendations in a format that can support project decisions.

Reports may include summary tables, boring logs, laboratory reports, site plans, sampling location figures, groundwater flow interpretation, contaminant distribution figures, and discussion of applicable exposure pathways.

Recommendations are tailored to the project context. Depending on the findings, next steps may include no additional action based on the completed scope, additional delineation, BEA or Due Care documentation, response planning, or coordination with EGLE or other stakeholders.