The investigation of environmental risks associated with a specific site may be part of the due diligence of a property transfer, or it can be in response to a suspected problem. OES’s experienced environmental staff will assist the lender, buyer, or seller in performing a Transaction Screen, Phase I, or Phase II ESA. Our staff has extensive experience working with the transacting parties to determine the appropriate scope of work to characterize and determine environmental risk. All OES Environmental Site Assessments comply with the ASTM Phase I E 1527 standard which was revised in accordance with EPA’s All Appropriate Inquiries (AAI) Rule.