Unmanned Aerial Systems for Environmental Due Diligence
EPA defines “All appropriate inquiries” as a process of evaluating a property’s environmental conditions and assessing potential liability for any contamination. All appropriate inquiries must be conducted to obtain certain protections from liability under the federal Superfund Law (CERCLA). The specific reporting requirements for all appropriate inquiries are provided in 40 CFR §312.21 §312.31 of the final rule. The results of the inquiry are typically documented in a Phase 1 Property Environmental Site Assessment. Recommendations for the conduct of a Phase 1 ESA are published in ASTM E1527-13, Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process and contain requirements for a records review, including historical aerial photography, a site inspection, and surrounding area survey. The Phase 1 ESA “shelf life” is generally good for 180 days. Thereafter, it should be updated including a new visual inspection.