Phase I Environmental Site Assessment (ESA)

Black Rock Geosciences (BRG) has conducted over 400 Phase I Environmental Site Assessments (ESAs) in its more than 20 years of experience.  BRG routinely prepares Phase I ESAs for residential, commercial, industrial, transportation, and school properties.

The scope of a Phase I ESA includes, but is not limited to the following:

  • Review of onsite and adjoining property conditions,

  • Review of historic aerial photographs and topographic maps,

  • Review of available reports prepared for the site,

  • Review of the soil and groundwater conditions underlying the site,

  • Review of environmental maps and reports prepared for the site,

  • Review of state and federal environmental databases,

  • Review of agency files,

  • Interviews with persons knowledgeable of the site, and

  • Formal report preparation.

Each assessment is conducted in a manner that meets or exceeds ASTM 1527 and/or lender guidelines. Our staff possesses sufficient education, training, and experience necessary to develop opinions and conclusions regarding hazardous material releases or threatened releases within properties. Where possible during the property walkthrough, we will conduct shallow soil excavations in potentially impacted areas in order to document their general horizontal and vertical extents. This action, and the pre-emptive collection and analyses of potentially impacted soil (if approved by the client), generally prevents delays of property transfers or loans due to minor (de minimus) releases.