Jump to main content.


Local Navigation


Record of Decision System (RODS)

INTERNATIONAL MINERALS (E. PLANT)

Abstract

Site Name:  INTERNATIONAL MINERALS (E. PLANT)
Address:  LOCKPORT RD 
City & State:  TERRE HAUTE  IN  47802
County:  VIGO
 
EPA ID:  INT190010876
EPA Region:  05
 
NPL Status:  Deleted from the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-88/070
ROD Date:  06/22/1988
Operable Unit(s):  01
 
Media:  GROUNDWATER SOIL
 
Contaminant:  PESTICIDES
 
Abstract:  THE IMC/TERRE HAUTE SITE IS LOCATED IN SOUTHEASTERN TERRE HAUTE, VIGO COUNTY, INDIANA. THE 37-ACRE SITE IS BORDERED ON THE WEST BY THE MILWAUKEE, ST. PAUL, AND PACIFIC RAILROAD AND ON THE EAST BY THE LOUISVILLE RAILROAD. THE SITE IS PART OF A SEMI-INDUSTRIALIZED AREA OF TERRE HAUTE AND IS 1.8 MILES EAST OF THE WABASH RIVER AND 1 MILE NORTH OF THE THOMPSON DITCH. A WASTE DISPOSAL AREA, ENCOMPASSING APPROXIMATELY SIX ACRES, IS LOCATED IN THE NORTHEASTERN PORTION OF TH PLANT SITE. FROM 1946 TO 1954 A SMALL FACILITY ON A SIX-ACRE SEGMENT OF THE PROPERTY MANUFACTURED, PACKAGED, AND WAREHOUSED TECHNICAL-GRADE BENZENE HEXACHLORIDE (BHC-TECH). THIS MATERIAL WAS SOLD TO INSECTICIDE MANUFACTURERS AS A RAW MATERIAL FOR THE PRODUCTION OF INSECTICIDES, INCLUDING LINDANE. THE SITE HAS BEEN OWNED BY INTERNATIONAL MINERALS AND CHEMICAL CORPORATION SINCE 1975. IMC CONDUCTED SURFICIAL AND SUBSURFICIAL SOIL SAMPLING IN 1979, FINDING THAT CONTAMINATION WAS WITHIN SEVEN FEET OF THE SURFACE AND WELL ABOVE THE GROUND WATER TABLE. SEVEN GROUND WATER MONITORING WELLS WERE INSTALLED AT THE SITE, AND SAMPLES INDICATED MEASURABLE BHC CONCENTRATIONS IN TWO OF THE WELLS. IN 1980, APPROXIMATELY 28,500 YD3 OF SOIL, RUBBLE, PIPING AND OTHER DEBRIS WERE EXCAVATED AND PLACED IN A SECURE CLAY-CAPPED MOUND TO PREVENT OFFSITE MIGRATION OF BHC-TECH. THE CAP SYSTEM INCLUDED A SURFACE DRAINAGE COLLECTION SYSTEM AND SOIL GAS VENTING. THE CONCENTRATION IN GROUND WATER OF LINDANE, THE GAMMA ISOMER OF BHC, DECLINED RELATIVELY QUICKLY AFTER CONSTRUCTION OF THE MOUND AND HAS CONTINUED TO DECLINE AT A SLOWER RATE SINCE 1983. THE SOIL CLEANUP AND MOUND CONSTRUCTION HAS PROVEN TO BE EFFECTIVE IN CONTAINING THE SOURCE OF THE BHC-TECH AND IN REDUCING GROUND WATER CONTAMINATION TO MCL AND MCLG CONCENTRATIONS. THE PRIMARY CONTAMINANTS OF CONCERN ARE LINDANE AND TOTAL BHC.

THE SELECTED REMEDIAL ACTION FOR THIS SITE IS NO FURTHER ACTION WITH A MAINTENANCE PROGRAM, WHICH INCLUDES; INSPECTION OF THE EXISTING CAP QUARTERLY, AND MAINTENANCE OF THE VEGETATIVE COVER; INITIATION OF A GROUND WATER MONITORING PROGRAM (SAMPLING OF UPGRADIENT AND DOWNGRADIENT WELLS SEMI-ANNUALLY FOR THE NEXT FIVE YEARS AND THEN ANNUALLY UNTIL 2010); ACCESS RESTRICTIONS; AND ESTABLISHMENT OF A CONTINGENCY PLAN. THE ESTIMATED PRESENT WORTH COST FOR THIS REMEDIAL ACTION IS $159,000 FOR O&M OF THE EXISTING SYSTEM.
 
Remedy:  THE ON-GOING QUARTERLY MONITORING SHOULD CONTINUE UNTIL DECEMBER 2010 (30 YEARS AFTER CLOSURE WAS COMPLETED IN 1980) AND SO NOTED IN THE DEED FOR THE PROPERTY. MAJOR ELEMENTS OF THIS PROGRAM INCLUDE:
* QUARTERLY CAP INSPECTION; MAINTENANCE OF VEGETATIVE COVER AS NECESSARY.
* SAMPLING OF UPGRADIENT WELLS PW-1, B-1 AND B-2 WITH ANALYSIS CONDUCTED FOR BHC ISOMERS. (SEMI-ANNUAL SAMPLING FOR NEXT 5 YEARS, ANNUAL THEREAFTER UNTIL YEAR 2010).
* SAMPLING OF DOWNGRADIENT WELLS B-9A, B-10A AND B-11A WITH ANALYSIS CONDUCTED FOR BHC ISOMERS. (SEMI-ANNUAL SAMPLING FOR NEXT 5 YEARS, ANNUAL THEREAFTER UNTIL YEAR 2010).
* ANNUAL REPORTING OF MONITORING RESULTS TO THE STATE OF INDIANA.
* A REVIEW OF THE RESULTS OF THE REMEDIAL ACTION WILL BE CONDUCTED WITH IDEM AND THE U.S. EPA AT THE END OF EACH FIVE PERIOD.
AN ESTIMATE OF THE COST OF THIS PROGRAM, EXPRESSED IN DECEMBER 1987 DOLLARS, APPEARS IN TABLE 7. THIS COST ESTIMATE INCLUDES AN ALLOWANCE FOR REPLACEMENT OF THE FENCE SURROUNDING THE DISPOSAL MOUND HALFWAY THROUGH THE MONITORING PERIOD.
 
Text:  View full-text ROD [ 67K ]
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.