A Phase I Environmental Site Assessment (Phase I ESA) is typically performed to evaluate current and historical uses of a property as part of a commercial real estate transaction. The assessment discovers current and historical property uses which have impacted the soil or groundwater beneath the property and could pose a threat to the environment and/or human health. If issues are discovered, there may be a potential liability for the lender and/or owner, and property value. A Phase I ESA completed prior to the closure of a real estate transaction can be used to satisfy the requirements of CERCLA’s innocent land owner defense under All Appropriate Inquiries (AAI). EGSL Phase I ESA reports comply with current ASTM E1527 unless otherwise warranted.