Jump to main content.


Local Navigation


Record of Decision System (RODS)

TELEDYNE WAH CHANG

Abstract

Site Name:  TELEDYNE WAH CHANG
Address:  600 OLD SALEM RD NE 
City & State:  ALBANY  OR  97321
County:  LINN
 
EPA ID:  ORD050955848
EPA Region:  10
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R10-90/021
ROD Date:  12/28/1989
Operable Unit(s):  02
 
Media:  GROUNDWATER SOIL
 
Contaminant:  ORGANICS, METALS, CHROMIUM, ZIRCONIUM, LEAD, RADIOACTIVE MATERIALS
 
Abstract:  THE TELEDYNE WAH CHANG (TWC) SITE, IN MILLERSBURG, OREGON, IS AN ACTIVE PLANT USED TO PRODUCE NONFERROUS METALS AND PRODUCTS. THE SITE CONSISTS OF A 110-ACRE PLANT SITE, WHICH CONTAINS THE PLANT'S FORMER SLUDGE PONDS, AND A 115-ACRE FARM SITE, WHICH CONTAINS FOUR ACTIVE WASTEWATER SLUDGE PONDS. PORTIONS OF THE TWC SITE ARE WITHIN THE WILLAMETTE RIVER'S 100- AND 500-YEAR FLOODPLAIN. THE WAH CHANG CORPORATION BEGAN OPERATING A U.S. BUREAU OF MINES ZIRCONIUM METAL SPONGE PILOT PLANT UNDER CONTRACT WITH THE U.S. ATOMIC ENERGY COMMISSION IN 1956. ADDITIONAL FACILITIES WERE SUBSEQUENTLY BUILT NEAR THE PLANT BEGINNING IN 1957 TO PRODUCE NONFERROUS METALS AND PRODUCTS. THE LOWER RIVER SOLIDS POND (LRSP) AND SCHMIDT LAKE SLUDGE POND, WHICH STORED WASTEWATER GENERATED FROM THE PLANT OPERATIONS, ARE BEING ADDRESSED BY THIS REMEDIAL ACTION. THE 3-ACRE LRSP RECEIVED SLUDGE FROM TWC'S ONSITE WASTEWATER TREATMENT PLANT FROM 1967 TO 1979 AND CURRENTLY HOLDS APPROXIMATELY 75,000 CUBIC YARDS OF SLUDGE. SCHMIDT LAKE COVERS 0.6 ACRE AND ACCEPTED APPROXIMATELY 10,000 CUBIC YARDS OF SLUDGE FROM 1974 TO 1979. THE SLUDGE IN BOTH THE LRSP AND SCHMIDT LAKE CONTAINS HEAVY METALS, ORGANIC COMPOUNDS, AND TRACE LEVELS OF RADIONUCLIDES. BECAUSE THE PONDS CONTAIN RADIOACTIVE MATERIALS AND ARE A POTENTIAL SOURCE OF GROUND WATER CONTAMINATION, TWC DECIDED TO CLEAN UP THE PONDS WITHOUT WAITING FOR THE FULL SITE REMEDIAL INVESTIGATION TO BE COMPLETED. THIS INTERIM ACTION ADDRESSES THE CONTAMINATED SLUDGE IN THE LRSP AND SCHMIDT LAKE. CONTAMINATED SOIL IN THE SLUDGE PONDS WILL BE ADDRESSED AS PART OF AN OVERALL SITE REMEDY. THE PRIMARY CONTAMINANTS OF CONCERN AFFECTING THE SLUDGE PONDS ARE ORGANICS; METALS INCLUDING CHROMIUM, ZIRCONIUM, AND LEAD; AND RADIOACTIVE MATERIALS.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES EXCAVATION OF 85,000 CUBIC YARDS OF SLUDGE WITH PARTIAL SOLIDIFICATION OF THE SLUDGE, FOLLOWED BY OFFSITE DISPOSAL IN A PERMITTED SOLID WASTE LANDFILL. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $10,716,000, WITH NO O&M COSTS.

PERFORMANCE STANDARDS OR GOALS: THE SELECTED REMEDY WILL ATTAIN FEDERAL AND STATE ARARS. INDIVIDUAL CONTAMINANT GOALS WERE NOT SPECIFIED FOR THIS INTERIM REMEDIAL ACTION.
 
Remedy:  THE SLUDGE UNIT ADDRESSED BY THIS ROD IS THE FIRST OPERABLE UNIT TO BE ADDRESSED AT THE TWCA SITE. THE REMEDIAL INVESTIGATION/FEASIBILITY STUDY (RI/FS) FOR THE UNIT DID NOT INCLUDE CERTAIN COMPONENTS OF A NORMAL RI/FS, SUCH AS A COMPLETE BASELINE RISK ASSESSMENT, BECAUSE THESE WILL BE PART OF AN OVERALL SITE RI/FS (CURRENTLY IN THE RI STAGE WITH THE FS SCHEDULED FOR COMPLETION IN 1991). THE SLUDGE POND UNIT IS BEING DEALT WITH SEPARATELY DUE TO THE PROPERTY OWNERS', AND THE PUBLIC'S, WISH FOR AN EXPEDITIOUS CLEANUP OF THE SLUDGES, WHICH MAY BE CONTRIBUTING TO GROUNDWATER CONTAMINATION AT THE SITE.

THE REMEDY CONSISTS OF;
* DIGGING UP AND REMOVING THE SLUDGE.
* PARTIALLY SOLIDIFYING THE SLUDGE WITH A SOLIDIFICATION AGENT SUCH AS PORTLAND CEMENT, TO IMPROVE HANDLING AND REDUCE THE GROSS MOBILITY OF THE SOLIDS. A TREATMENT PLANT WILL BE BUILT FOR THIS PURPOSE.
* TRANSPORTING THE SLUDGE MIXTURE TO A SOLID WASTE LANDFILL AND DISPOSING OF IT OFFSITE.

THE WASTES BEING ADDRESSED IN THIS INTERIM ACTION ARE NOT HAZARDOUS WASTES AS DEFINED BY THE RESOURCE CONSERVATION AND RECOVERY ACT (RCRA); THEREFORE, THE RCRA LAND DISPOSAL RESTRICTIONS DO NOT APPLY. WHEN THE OVERALL SITE FEASIBILITY STUDY IS COMPLETED, THE SLUDGE UNIT REMEDY WILL BE REVIEWED TO ASSURE CONSISTENCY WITH THE OVERALL REMEDIAL STRATEGY FOR THE TWCA SITE.
 
Text:  View full-text ROD [ 53K ]
To download a full-text ROD, right click on the above link and select Save Link As. A full-text ROD is in PDF format. Please note that download time may be extended given the size of the full-text document. File size is noted in kilobytes (K) or megabytes (M) next to the download link.
About Adobe Portable Document Format
 
Return to Search Results    Return to RODS List

OSWER Home | Superfund Home


Jump to main content.