ACAT FOIA Repository 350

Document: ACAT FOIA Repository 350, Date Received March 2025
Year: 2004
Page(s): 467
Document Title: MWH Final Human Health and Ecological Risk Assessment
Agency/Organization: MWH Americas, Inc., USACE

Document Summary:
MWH Americas, Inc. human health and ecological risk assessment (HHERA) evaluates the Phase III Remedial Investigation activities for the Northeast Cape Installation. Of the 33 sites on the Northeast Cape Installation evaluated in the assessment, two sites were designated as "no further action" sites and 10 sites were recommended for no work other than containerized hazardous waste and/or building demolition/debris removal. 21 sites, including background areas and four White Alice Communications Systems sites, are addressed in the HHERA assessment. The assessment concludes that, although risks to current and future receptors are below ADEC's carcinogenic risk threshhold. When seasonal food use is considered however, MWH assesses that the site surpasses ADEC's carcinogenic risk threshhold.