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Record of Decision System (RODS)

NEW BRIGHTON/ARDEN HILLS/TCAAP (USARMY)

Abstract

Site Name:  NEW BRIGHTON/ARDEN HILLS/TCAAP (USARMY)
Address:  JCT HWY 10 & MN HWY 96S 
City & State:  NEW BRIGHTON  MN  55112
County:  RAMSEY
 
EPA ID:  MN7213820908
EPA Region:  05
 
NPL Status:  Currently on the Final NPL
 
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-83/006
ROD Date:  09/19/1983
Operable Unit(s):  01
 
Media:  GROUNDWATER
 
Contaminant:  CHLORINATED ORGANICS (TCE), VOLATILE ORGANIC SOLVENTS
 
Abstract:  THE MUNICIPAL DRINKING WATER WELLS IN THE CITY OF NEW BRIGHTON/ARDEN HILLS WERE FOUND TO BE CONTAMINATED WITH VOLATILE ORGANIC SOLVENTS IN JUNE 1981. THE CITY OPENED TWO NEW WELLS IN 1982 TO REACH A LOWER NON-CONTAMINATED WATER AQUIFER. SINCE IT WAS FIRST DISCOVERED, THE CONTAMINATION LEVELS HAVE INCREASED IN THE REMAINING UNDEEPENED MUNICIPAL WELLS TO APPROXIMATELY 70 PPB TRICHLOROETHYLENE (TCE). THE MINNESOTA DEPARTMENT OF HEALTH HAS ORDERED SEVERAL MUNICIPAL AND SIX PRIVATE WELLS CLOSED. THE USERS OF THE PRIVATE WELLS ARE AT PRESENT BEING SUPPLIED WITH BOTTLED WATER.

THE COST-EFFECTIVE INITIAL REMEDIAL MEASURE (IRM) IS TO EXTEND THE EXISTING WATER SUPPLY SYSTEM TO THE NEW BRIGHTON AND ARDEN HILLS PRIVATE WELL USERS WHOSE WELLS HAVE BEEN FOUND TO BE CONTAMINATED WITH TCE AND OTHER CHLORINATED ORGANICS. CAPITAL COSTS FOR THE IRM ARE ESTIMATED TO BE $217,958.
 
Remedy:  - EXTEND EXISTING WATER SUPPLY SYSTEM TO THE NEW BRIGHTON AND ARDEN HILLS PRIVATE WELL USERS WHOSE WELLS HAVE BEEN FOUND TO BE CONTAMINATED WITH TRICHLOROETHYLENE AND OTHER CHLORINATED ORGANICS.
 
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