Risk assessment for the Explosive Washout Lagoons (Site 4), Umatilla Depot Activity Hermiston, Oregon. Final report, Mar 91-Mar 92
This document is the Risk Assessment (RA) for the Explosive Washout Lagoons (Site 4) at Umatilla Army Depot Activity (UMDA). The purpose of this RA is to address the potential future health risks posed by explosives-contaminated soil and groundwater associated with Site 4 in the absence of remediation, and to identify safe residual explosives concentrations (remedial action criteria) in soil if remediation is determined to be a requirement. This RA is not intended to address the remediation of contaminated groundwater; contaminated groundwater is addressed only to the extent that contaminants in Site 4 soil are affecting groundwater quality. The potential remediation of contaminated groundwater will be addressed in the installation-wide Baseline RA for UMDA. Based on the available data, explosives contamination appears to be widespread in soil near the lagoons and in groundwater at distances of over 650 yards from the lagoons. Three future land use scenarios-residential, light industrial, and military-and four potential future exposure pathways-soil ingestion, dust inhalation, dermal contact with soil, and groundwater ingestion-were evaluated in the RA to estimate potential future carcinogenic hazards. The results of RA indicate that remediation may be a requirement for soil at Site 4; therefore, remedial action criteria for soil were developed.
- Research Organization:
- Dames and Moore, Washington, DC (United States)
- OSTI ID:
- 7250642
- Report Number(s):
- AD-A-253750/4/XAB; CNN: DAAA15-88-D-0008
- Country of Publication:
- United States
- Language:
- English
Similar Records
Addendum to the baseline risk assessment, Umatilla Depot Activity, Hermiston, Oregon. Final report, July 1991-January 1995
Superfund explanation of significant difference for the Record of Decision (EPA Region 10): Umatilla Army Depot (Lagoons), Hermiston, OR, September 30, 1997
Related Subjects
290300 -- Energy Planning & Policy-- Environment
Health
& Safety
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CONTAMINATION
DEVELOPED COUNTRIES
EXPLOSIVES
FEDERAL REGION X
GROUND WATER
HAZARDS
HEALTH HAZARDS
HYDROGEN COMPOUNDS
LAND POLLUTION
LAND USE
MILITARY FACILITIES
NORTH AMERICA
OREGON
OXYGEN COMPOUNDS
POLLUTION
PUBLIC HEALTH
REMEDIAL ACTION
RISK ASSESSMENT
SITE SURVEYS
SOILS
USA
WATER
WATER POLLUTION