Site/Remedial Investigation Report. Fort Devens Sudbury Training Annex, MiddlesexCounty, Massachusetts. Addendum

摘要

This document presents complete Remedial Investigation (RI) results for Areas ofContamination (AOCs) A4, A7, and A9, and complete Site Investigation (SI) results for Study Areas (SAs) A3/P5, P4, P7, Pt7, P19, P20, P25, P35, P49, P51, P59, and P60 at the Fort Devens Sudbury Training Annex, Middlesex County, Massachusetts. Based on the RI results, actual or threatened releases of hazardous substances from AOCs A7 and A9, if not addressed by implementing a source control remedy, may present an imminent and substantial endangerment to public health, welfare, or the environment. AOC A4 may require solid waste closure under Massachusetts state regulations due to the presence of solid debris. Based on the SI results, supplemental site investigations are recommended for SAs P17, P20, P59, and P60, limited removal actions are recommended for A3/P5, P4, and P35, and no further action is recommended for P7, P19, P25, P49, and P51.