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Record of Decision System (RODS)

REILLY TAR & CHEMICAL CORP. (ST. LOUIS PARK PLANT)

Abstract

Site Name:  REILLY TAR & CHEMICAL CORP. (ST. LOUIS PARK PLANT)
Address:  LOUISIANA & WALKER STREET 
City & State:  ST. LOUIS PARK  MN  55426
County:  HENNEPIN
 
EPA ID:  MND980609804
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-84/008
ROD Date:  06/06/1984
Operable Unit(s):  01
 
Media:  GROUNDWATER PEAT BOG SOIL SURFACE WATER
 
Contaminant:  COAL TAR WASTES, CREOSOTE, GREASE, OILS, PAHS, PHENOLICS
 
Abstract:  THE REILLY TAR AND CHEMICAL SITE OCCUPIES 80 ACRES IN ST. LOUIS PARK, MINNESOTA. THE REPUBLIC CREOSOTE WORKS, WHICH OPERATED AT THE SITE BETWEEN 1917 AND 1972, FRACTIONALIZED COAL TAR INTO VARIOUS OILS AND PRODUCED CREOSOTE. THE WASTES RESULTING FROM THIS PROCESS POLLUTED THE LAND SURFACE OF THE SITE AND FOUR UNDERLYING AQUIFERS. THE POLLUTANTS CONSISTED PRIMARILY OF POLYNUCLEAR AROMATIC HYDROCARBONS (PAHS) AND RELATED COAL TAR DERIVATIVES.

THE COST-EFFECTIVE REMEDIAL ALTERNATIVE SELECTED FOR THIS SITE IS TREATMENT OF THE ST. LOUIS PARK WELL SLP-15/10 BY A GRANULAR ACTIVATED CARBON (GAC) WATER TREATMENT SYSTEM. GAC PROVIDES THE BEST AVAILABLE TECHNOLOGY TO RESTORE DRINKING WATER QUALITY AND WILL ALSO HELP PREVENT THE SPREAD OF CONTAMINATION. THE ESTIMATED TOTAL CAPITAL COST IS $750,000 AND THE FIRST YEAR O&M COST IS ESTIMATED AT $188,000.
 
Remedy:  - CONSTRUCTION OF A GRANULAR ACTIVATED CARBON (GAC) WATER TREATMENT SYSTEM AT ST. LOUIS PARK WELL 15/10 AS A MAJOR COMPONENT OF RESTORATION OF DRINKING WATER QUALITY TO ST. LOUIS PARK, MINNESOTA.
- OPERATION OF THE ABOVE SYSTEM AT 1200 GALLONS PER MINUTE WILL ALSO SERVE AS A MAJOR COMPONENT OF A GRADIENT CONTROL WELL SYSTEM. THE OPERATION OF THE GRADIENT CONTROL WELL SYSTEM WILL PROTECT THE DRINKING WATER SUPPLIES OF NEIGHBORING CITIES FROM CONTAMINATION, AND ALLOW ST. LOUIS PARK EVENTUALLY TO OPEN OTHER WELLS CLOSED DUE TO CONTAMINATION.
 
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