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Record of Decision System (RODS)

LASALLE ELECTRIC UTILITIES

Abstract

Site Name:  LASALLE ELECTRIC UTILITIES
Address:  ST VINCENT RD 
City & State:  LA SALLE  IL  61301
County:  LA SALLE
 
EPA ID:  ILD980794333
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-88/061
ROD Date:  03/30/1988
Operable Unit(s):  02
 
Media:  DEBRIS GROUNDWATER SEDIMENTS SOIL
 
Contaminant:  PCBS, VOCS
 
Abstract:  THE LASALLE ELECTRICAL UTILITIES (LEU) SITE IS LOCATED IN THE CITY OF LASALLE, WEST-CENTRAL LASALLE COUNTY, IN NORTH-CENTRAL ILLINOIS. THERE ARE APPROXIMATELY 190 PEOPLE AND 70 RESIDENCES LOCATED WITHIN ONE-EIGHTH MILE OF THE LEU PROPERTY. LEU, A FORMER MANUFACTURER OF ELECTRICAL EQUIPMENT, BEGAN OPERATING PRIOR TO WORLD WAR II. BETWEEN THE LATE 1940S AND 1978, PCBS WERE UTILIZED IN THE PRODUCTION OF CAPACITORS. UNDOCUMENTED REPORTS ALLEGE THE APPLICATION OF PCB-CONTAMINATED WASTE OILS AS A DUST SUPPRESSANT BOTH ON AND OFF THE PROPERTY UNTIL AS LATE AS 1969. FOLLOWING THE REGULATION OF PCBS, MANIFESTS DOCUMENT THE DISPOSAL OF PCBS AT ALL REGULATED FACILITIES. BEGINNING IN SEPTEMBER 1975, NUMEROUS GOVERNMENT AGENCIES CONDUCTED VARIOUS INSPECTIONS AND ISSUED COMPLAINTS AND ORDERS TO THE LEU COMPANY AS A RESULT OF ITS MANUFACTURING AND HANDLING PRACTICES. SOIL SAMPLING CONDUCTED BY THE ILLINOIS ENVIRONMENTAL PROTECTION AGENCY (IEPA) IN DECEMBER 1980 DOCUMENTED ONSITE PCB CONTAMINATION. CONTINUED SOIL SAMPLING REVEALED OFFSITE CONTAMINATION IN MARCH AND MAY 1981. THE IEPA ORDERED THE COMPANY TO CEASE OPERATIONS IN MAY 1981. THE U.S. EPA CONDUCTED IMMEDIATE REMOVAL ACTIONS THAT INVOLVED FENCING THE LEU PROPERTY AND CAPPING A PORTION OF THE HEAVILY CONTAMINATED ONSITE PROPERTY; CAPPING CONTAMINATED OFFSITE PROPERTY TO THE SOUTH OF THE SITE; AND STAGING, SAMPLING, AND PACKAGING PCB WASTE MATERIAL FOR FUTURE DISPOSAL. THE FIRST OPERABLE UNIT ROD, SIGNED SEPTEMBER 19, 1986, ADDRESSED OFFSITE SOIL CONTAMINATION. THIS SECOND REMEDIAL ACTION OPERABLE UNIT ADDRESSES PCB AND VOC CONTAMINATION IN SOIL, SEDIMENTS, BUILDING STRUCTURES, AND GROUND WATER.

THE SELECTED REMEDIAL ACTION FOR THIS SITE INCLUDES; EXCAVATION AND ONSITE INCINERATION OF CONTAMINATED SOIL AND REPLACEMENT WITH CLEAN FILL; HIGH PRESSURE FLUSHING AND MECHANICAL CLEANING OF AFFECTED SEWER LINES; EXCAVATION AND ONSITE INCINERATION OF CONTAMINATED SEDIMENT FROM THE UNNAMED CREEK DOWNSTREAM OF THE STORM SEWER DISCHARGE; GROUND WATER COLLECTION AND ONSITE TREATMENT USING PHASE SEPARATION, FILTRATION, AND AIR STRIPPING WITH DISCHARGE TO THE LOCAL WASTE WATER TREATMENT PLANT VIA SANITARY SEWERS; AND DEMOLITION AND OFFSITE DISPOSAL OF CONTAMINATED LEU BUILDING STRUCTURES. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $34,495,180.
 
Remedy:  THE U.S. EPA HAS ELECTED TO SPLIT THE SITE INTO TWO SEPARATE OPERABLE UNITS. THE FIRST OPERABLE UNIT DEALT WITH SOIL CONTAMINATION NOT ON THE LEU PROPERTY, WHILE THE SECOND OPERABLE UNIT (THIS DECISION) ADDRESSES ALL REMAINING CONTAMINATION. THE SELECTED REMEDY CONSISTS OF THE FOLLOWING MAJOR COMPONENTS; - EXCAVATION OF CONTAMINATED SOIL FROM THE LASALLE ELECTRICAL UTILITIES (LEU) PROPERTY;
- HIGH PRESSURE FLUSHING AND MECHANICAL CLEANING OF CONTAMINATED SEWER LINES;
- EXCAVATION OF CONTAMINATED SEDIMENT FROM THE UNNAMED CREEK DOWNSTREAM OF THE STORM SEWER DISCHARGE;
- INCINERATION OF THE CONTAMINATED SOIL AND SEDIMENT WITH A MOBILE, ON-SITE, THERMAL DESTRUCTION UNIT;
- DEMOLITION AND DISPOSAL OF THE CONTAMINATED LEU BUILDINGS;
- CONSTRUCTION OF A GROUND WATER COLLECTION SYSTEM ON AND NEAR THE LEU PROPERTY; AND
- CONSTRUCTION OF AN ON-SITE TREATMENT SYSTEM THAT WILL PROCESS THE CONTAMINATED GROUND WATER COLLECTED.
 
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