ASTM E 1903 - 11 Standard Practice for Environmental Site Assessments: Phase II Environmental Site Assessment Process

American Society for Testing and Materials (ASTM). Current edition approved June 15, 2011. Published July 2011. Originally approved in 1997. Last previous edition approved in 2002 as E1903 – 97 (2002). 21 p. This practice covers a process for conducting a Phase II environmental site assessment (ESA) of a parcel of property with respect to the presence or the likely presence of substances including but not limited to those within the scope of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) (e.g., hazardous substances), pollutants, contaminants, petroleum and petroleum products, and controlled substances and constituents thereof. It specifies procedures based on the scientific method to characterize property conditions in an objective, representative, reproducible, and defensible manner. To promote clarity in defining Phase II ESA objectives and transparency in communicating and interpreting Phase II ESA results, this practice specifies adherence to requirements for documenting the scope of assessment and constraints on the conduct of the assessment process.