HEI has completed hundreds of ASTM/21-E Phase I Environmental Site Assessments (ESAs) throughout New England.

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These typically are conducted in an effort to determine the potential for Recognized Environmental Conditions (RECs) and their potential to impact soil and/or groundwater at the study Site.  RECs could would include the following:

• Former use as a filling or service station;

• Former use as a dry cleaners;

• Undocumented underground storage tanks; and,

• Use of floor drains and subsurface disposal structures at auto repair facilities.

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The properties are researched individually utilizing state and municipal records, historic aerial databases, topographic maps, city directories, Sanborn fire insurance maps, environmental questionnaires, and other historic database records.

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