What environmental media must be sampled as part of the Phase II assessment? What analysis should be performed on the samples?
MDE requires that surface soils (0-1 foot deep), deeper soils (4 to 5 feet deep) and groundwater be sampled. Surface water and sediment samples must also be collected if a surface water body is located on the property or if there is a direct discharge from the property to surface water. Providing the Phase I documents a thorough site history, the sample analysis may be tailored to include just compounds known or suspected to be used, stored or manufactured at the property, either currently or in the past. If a thorough site history has not been documented analysis should include priority pollutant metals, volatile organic compounds, and semi-volatile organic compounds at a minimum.
