Accession Number : ADA299004

Title :   Explosive Washout Lagoons Soils Operable Unit Supplemental Investigation Technical and Environmental Management Support of Installation Restoration Technology Development Program, Umatilla Depot Activity, Hermiston. Oregon. Phase 2.

Descriptive Note : Final Draft rept. May 91-May 92,

Corporate Author : CH2M HILL BELLEVUE WA

Personal Author(s) : Raymondi, Richard

PDF Url : ADA299004

Report Date : 15 APR 1992

Pagination or Media Count : 217

Abstract : As part of an ongoing Remedial Investigation/Feasibility Study at the Umatilla Army Depot, the soils of the Explosives Washout Lagoons at that installation were assigned as an operable unit for a possible expedited remedial action. Additional sampling was conducted to determine the explosives concentrations at depth beneath the lagoons, and to verify the absence of other contaminants. Explosives contamination was found from the ground surface to the groundwater at 47 feet. Concentrations were much higher in the top 3 feet than in the soil beneath that. Other organic contamination was not present; some metals were elevated slightly above background. The results of the study are being used in a feasibility study of remedial action alternatives. (AN)

Descriptors :   *SOIL POLLUTION, *INSTALLATION RESTORATION, *EXPLOSIVE ORDNANCE DISPOSAL, SPATIAL DISTRIBUTION, MANAGEMENT PLANNING AND CONTROL, CHEMICAL CONTAMINATION, WASTE WATER, ARMY FACILITIES, FIELD TESTS, MOISTURE CONTENT, DEPTH, BOREHOLES, AQUIFERS, GROUND WATER, WATER POLLUTION, SUPPLY DEPOTS, FEASIBILITY STUDIES, SAMPLING, BERYLLIUM, ENVIRONMENTAL MANAGEMENT, SITE INVESTIGATIONS, RDX, TNT, SOIL TESTS, CONCENTRATION(CHEMISTRY), NITROBENZENES, WATER WELLS, NITRATES, LITHOLOGY, OREGON, LAGOONS(LANDFORMS), HMX, DNT, NITRITES.

Subject Categories : Soil Mechanics
      Ammunition and Explosives
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE