Environmental Site Assessments

 

Often triggered by Phase I Environmental Site Assessments (ESAs), Phase II ESAs begin with a Conceptual Site Model (CSM) to identify contaminants of concern, potential exposure pathways, and regulatory standards. St.Germain is an expert in conducting these, and each assessment approach caters the field and laboratory methods to each particular site.

 

 

St.Germain provides Phase II ESAs using these field methods and techniques:

– Geoprobe
– Hollow stem auger
– Test pitting
– Hand auger
– Low flow sampling
– Incremental sampling methodology (ICM)
– Monitoring well installation
– Photoionization detectors (PID)
– X-ray fluorescence (XRF)
– Oleophilic dye tests
– Water quality multi-meters

 

 

For the following types of sites

– Gasoline service stations
– Dry cleaners
– Railroad yards
– Landfills
– Car dealerships
– Manufacturing facilities
– Utility pole storage yards
– Golf courses

 

 

REPRESENTATIVE PROJECTS

Our expertise is not limited to just sampling. Staff prepare groundwater contour maps, calculate contaminant migration rates, create time-series charts, and apply statistics to sample data.  We are also savvy in the US Environmental Protection Agency (EPA) laboratory methods for inorganic and organic sample analysis.

 

 

CONTAMINANTS OF CONCERN (COC) EXPERIENCE

– Chlorinated solvents (e.g., PCE, TCE, TCA, DCE)
– Heavy metals (e.g., lead, arsenic, chromium)
– PCBs, dioxin, PFAS
– Petroleum products (e.g., gasoline, diesel, oils, MTBE, benzene)
– Herbicides and pesticides